[Feature] add: config options to configure extra hosts (#938)

- add: `k3d cluster create --host-alias <ip>:<hostname>[,alias,...]`
- add: `.hostAliases` config option (to be present in v1alpha4/Simple
- change: regexp hostname validation
- add: `HostAliases` in `SimpleConfig`, `ClusterCreateOpts` and `ClusterStartOpts`
- add: `NewHostAliasesInjectEtcHostsAction`
-  add: `RewriteFileActionOpts` with option `NoCopy` to work around "Resource Busy" issue
pull/942/head
Thorsten Klein 3 years ago committed by GitHub
parent c16bf6f3d2
commit aec4507db8
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
  1. 35
      cmd/cluster/clusterCreate.go
  2. 7
      go.mod
  3. 15
      go.sum
  4. 31
      pkg/actions/nodehooks.go
  5. 166
      pkg/client/cluster.go
  6. 21
      pkg/client/clusterName.go
  7. 72
      pkg/client/hooks.go
  8. 5
      pkg/client/node.go
  9. 1
      pkg/config/transform.go
  10. 18
      pkg/config/v1alpha3/schema.json
  11. 2
      pkg/config/v1alpha3/types.go
  12. 26
      pkg/config/validate.go
  13. 9
      pkg/types/types.go
  14. 15
      vendor/github.com/asaskevich/govalidator/.gitignore
  15. 12
      vendor/github.com/asaskevich/govalidator/.travis.yml
  16. 43
      vendor/github.com/asaskevich/govalidator/CODE_OF_CONDUCT.md
  17. 63
      vendor/github.com/asaskevich/govalidator/CONTRIBUTING.md
  18. 21
      vendor/github.com/asaskevich/govalidator/LICENSE
  19. 622
      vendor/github.com/asaskevich/govalidator/README.md
  20. 87
      vendor/github.com/asaskevich/govalidator/arrays.go
  21. 81
      vendor/github.com/asaskevich/govalidator/converter.go
  22. 3
      vendor/github.com/asaskevich/govalidator/doc.go
  23. 47
      vendor/github.com/asaskevich/govalidator/error.go
  24. 100
      vendor/github.com/asaskevich/govalidator/numerics.go
  25. 113
      vendor/github.com/asaskevich/govalidator/patterns.go
  26. 656
      vendor/github.com/asaskevich/govalidator/types.go
  27. 270
      vendor/github.com/asaskevich/govalidator/utils.go
  28. 1769
      vendor/github.com/asaskevich/govalidator/validator.go
  29. 15
      vendor/github.com/asaskevich/govalidator/wercker.yml
  30. 37
      vendor/github.com/dimchansky/utfbom/.gitignore
  31. 29
      vendor/github.com/dimchansky/utfbom/.travis.yml
  32. 201
      vendor/github.com/dimchansky/utfbom/LICENSE
  33. 66
      vendor/github.com/dimchansky/utfbom/README.md
  34. 192
      vendor/github.com/dimchansky/utfbom/utfbom.go
  35. 1
      vendor/github.com/goodhosts/hostsfile/.gitignore
  36. 176
      vendor/github.com/goodhosts/hostsfile/LICENSE
  37. 5
      vendor/github.com/goodhosts/hostsfile/Makefile
  38. 451
      vendor/github.com/goodhosts/hostsfile/hosts.go
  39. 108
      vendor/github.com/goodhosts/hostsfile/hostsline.go
  40. 27
      vendor/github.com/goodhosts/hostsfile/make.bat
  41. 55
      vendor/github.com/goodhosts/hostsfile/slice.go
  42. 12
      vendor/github.com/goodhosts/hostsfile/utils.go
  43. 12
      vendor/github.com/goodhosts/hostsfile/utils_windows.go
  44. 9
      vendor/modules.txt

@ -32,6 +32,7 @@ import (
"github.com/docker/go-connections/nat"
"github.com/sirupsen/logrus"
"inet.af/netaddr"
"github.com/spf13/cobra"
"github.com/spf13/viper"
@ -266,6 +267,9 @@ func NewCmdClusterCreate() *cobra.Command {
cmd.Flags().String("registry-create", "", "Create a k3d-managed registry and connect it to the cluster (Format: `NAME[:HOST][:HOSTPORT]`\n - Example: `k3d cluster create --registry-create mycluster-registry:0.0.0.0:5432`")
_ = ppViper.BindPFlag("cli.registries.create", cmd.Flags().Lookup("registry-create"))
cmd.Flags().StringArray("host-alias", nil, "Add `ip:host[,host,...]` mappings")
_ = ppViper.BindPFlag("hostaliases", cmd.Flags().Lookup("host-alias"))
/* k3s */
cmd.Flags().StringArray("k3s-arg", nil, "Additional args passed to k3s command (Format: `ARG@NODEFILTER[;@NODEFILTER]`)\n - Example: `k3d cluster create --k3s-arg \"--disable=traefik@server:0\"")
_ = ppViper.BindPFlag("cli.k3sargs", cmd.Flags().Lookup("k3s-arg"))
@ -593,7 +597,38 @@ func applyCLIOverrides(cfg conf.SimpleConfig) (conf.SimpleConfig, error) {
cfg.Registries.Create.Host = exposeAPI.Host
cfg.Registries.Create.HostPort = exposeAPI.Binding.HostPort
}
}
// --host-alias
hostAliasFlags := ppViper.GetStringSlice("hostaliases")
if len(hostAliasFlags) > 0 {
for _, ha := range hostAliasFlags {
// split on :
s := strings.Split(ha, ":")
if len(s) != 2 {
return cfg, fmt.Errorf("invalid format of host-alias %s (exactly one ':' allowed)", ha)
}
// validate IP
ip, err := netaddr.ParseIP(s[0])
if err != nil {
return cfg, fmt.Errorf("invalid IP '%s' in host-alias '%s': %w", s[0], ha, err)
}
// hostnames
hostnames := strings.Split(s[1], ",")
for _, hostname := range hostnames {
if err := k3dCluster.ValidateHostname(hostname); err != nil {
return cfg, fmt.Errorf("invalid hostname '%s' in host-alias '%s': %w", hostname, ha, err)
}
}
cfg.HostAliases = append(cfg.HostAliases, k3d.HostAlias{
IP: ip.String(),
Hostnames: hostnames,
})
}
}
return cfg, nil

@ -40,14 +40,19 @@ require (
sigs.k8s.io/yaml v1.3.0
)
require github.com/spf13/pflag v1.0.5
require (
github.com/goodhosts/hostsfile v0.1.1
github.com/spf13/pflag v1.0.5
)
require (
github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.1.2 // indirect
github.com/containerd/continuity v0.2.1 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/dimchansky/utfbom v1.1.1 // indirect
github.com/docker/distribution v2.7.1+incompatible // indirect
github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c // indirect
github.com/fsnotify/fsnotify v1.5.1 // indirect

@ -68,6 +68,9 @@ github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBp
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2oc2f4tzPWic=
github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
@ -113,6 +116,8 @@ github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d h1:Byv0BzEl3/e6D5CLfI0j/7hiIEtvGVFPCZ7Ei2oq8iQ=
github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
github.com/beorn7/perks v0.0.0-20150223135152-b965b613227f/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
@ -172,6 +177,7 @@ github.com/cncf/xds/go v0.0.0-20211001041855-01bcc9b48dfe/go.mod h1:eXthEFrGJvWH
github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
github.com/cncf/xds/go v0.0.0-20211130200136-a8f946100490/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
github.com/codegangsta/cli v1.20.0/go.mod h1:/qJNoX69yVSKu5o4jLyXAENLRyk1uhi7zkbQ3slBdOA=
github.com/containerd/aufs v0.0.0-20200908144142-dab0cbea06f4/go.mod h1:nukgQABAEopAHvB6j7cnP5zJ+/3aVcE7hCYqvIwAHyE=
github.com/containerd/aufs v0.0.0-20201003224125-76a6863f2989/go.mod h1:AkGGQs9NM2vtYHaUen+NljV0/baGCAPELGm2q9ZXpWU=
github.com/containerd/aufs v0.0.0-20210316121734-20793ff83c97/go.mod h1:kL5kd6KM5TzQjR79jljyi4olc1Vrx6XBlcyj3gNv2PU=
@ -279,6 +285,8 @@ github.com/coreos/go-systemd/v22 v22.1.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+
github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/corpix/uarand v0.1.1 h1:RMr1TWc9F4n5jiPDzFHtmaUXLKLNUFK0SgCLo4BhX/U=
github.com/corpix/uarand v0.1.1/go.mod h1:SFKZvkcRoLqVRFZ4u25xPmp6m9ktANfbpXZ7SJ0/FNU=
github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
@ -301,6 +309,8 @@ github.com/denverdino/aliyungo v0.0.0-20190125010748-a747050bb1ba/go.mod h1:dV8l
github.com/dgrijalva/jwt-go v0.0.0-20170104182250-a601269ab70c/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/dimchansky/utfbom v1.1.1 h1:vV6w1AhK4VMnhBno/TPVCoK9U/LP0PkLCS9tbxHdi/U=
github.com/dimchansky/utfbom v1.1.1/go.mod h1:SxdoEBH5qIqFocHMyGOXVAybYJdr71b1Q/j0mACtrfE=
github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyGc8n1E=
github.com/docker/cli v0.0.0-20191017083524-a8ff7f821017/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
github.com/docker/cli v20.10.12+incompatible h1:lZlz0uzG+GH+c0plStMUdF/qk3ppmgnswpR5EbqzVGA=
@ -451,6 +461,8 @@ github.com/golang/protobuf v1.5.1/go.mod h1:DopwsBzvsk0Fs44TXzsVbJyPhcCPeIwnvohx
github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/goodhosts/hostsfile v0.1.1 h1:SqRUTFOshOCon0ZSXDrW1bkKZvs4+5pRgYFWySdaLno=
github.com/goodhosts/hostsfile v0.1.1/go.mod h1:lXcUP8xO4WR5vvuQ3F/N0bMQoclOtYKEEUnyY2jTusY=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.1/go.mod h1:xXMiIv4Fb/0kKde4SpL7qlzvu5cMJDRkFDxJfI9uaxA=
@ -560,6 +572,8 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO
github.com/iancoleman/strcase v0.2.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428 h1:Mo9W14pwbO9VfRe+ygqZ8dFbPpoIK1HFrG/zjTuQ+nc=
github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428/go.mod h1:uhpZMVGznybq1itEKXj6RYw9I71qK4kH+OGMjRC4KEo=
github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.8/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.10/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
@ -691,6 +705,7 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8m
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
github.com/ncw/swift v1.0.47/go.mod h1:23YIA4yWVnGwv2dQlN4bB7egfYX6YLn0Yo/S6zZO/ZM=
github.com/ngdinhtoan/glide-cleanup v0.2.0/go.mod h1:UQzsmiDOb8YV3nOsCxK/c9zPpCZVNoHScRE3EO9pVMM=
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=

@ -27,9 +27,11 @@ import (
"fmt"
"io"
"os"
"strings"
"github.com/rancher/k3d/v5/pkg/runtimes"
k3d "github.com/rancher/k3d/v5/pkg/types"
"github.com/rancher/k3d/v5/pkg/util"
l "github.com/rancher/k3d/v5/pkg/logger"
)
@ -65,6 +67,11 @@ type RewriteFileAction struct {
RewriteFunc func([]byte) ([]byte, error)
Mode os.FileMode
Description string
Opts RewriteFileActionOpts
}
type RewriteFileActionOpts struct {
NoCopy bool // do not copy over the file, but rather overwrite the contents of the target (e.g. to avoid "Resource busy" error on /etc/hosts)
}
func (act RewriteFileAction) Name() string {
@ -99,7 +106,29 @@ func (act RewriteFileAction) Run(ctx context.Context, node *k3d.Node) error {
l.Log().Tracef("Rewritten:\n%s", string(file))
return act.Runtime.WriteToNode(ctx, file, act.Path, act.Mode, node)
// default way: copy over file
if !act.Opts.NoCopy {
return act.Runtime.WriteToNode(ctx, file, act.Path, act.Mode, node)
}
// non-default: overwrite file contents
tmpPath := fmt.Sprintf(
"/tmp/%s-%s",
strings.ReplaceAll(act.Path, "/", "-"),
util.GenerateRandomString(20),
)
if err := act.Runtime.WriteToNode(ctx, file, tmpPath, act.Mode, node); err != nil {
return fmt.Errorf("error creating temp file %s: %w", tmpPath, err)
}
cmd := fmt.Sprintf("cat %s > %s", tmpPath, act.Path)
if err := act.Runtime.ExecInNode(ctx, node, []string{"sh", "-c", cmd}); err != nil {
return fmt.Errorf("error overwriting contents of %s: %w", act.Path, err)
}
return nil
}

@ -74,6 +74,7 @@ func ClusterRun(ctx context.Context, runtime k3drt.Runtime, clusterConfig *confi
/*
* Step 2: Pre-Start Configuration
*/
// Gather Environment information, e.g. the host gateway address
envInfo, err := GatherEnvironmentInfo(ctx, runtime, &clusterConfig.Cluster)
if err != nil {
return fmt.Errorf("failed to gather environment information used for cluster creation: %w", err)
@ -88,6 +89,7 @@ func ClusterRun(ctx context.Context, runtime k3drt.Runtime, clusterConfig *confi
NodeHooks: clusterConfig.ClusterCreateOpts.NodeHooks,
EnvironmentInfo: envInfo,
Intent: k3d.IntentClusterCreate,
HostAliases: clusterConfig.ClusterCreateOpts.HostAliases,
}); err != nil {
return fmt.Errorf("Failed Cluster Start: %+v", err)
}
@ -970,78 +972,95 @@ func ClusterStart(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Clust
/*** DNS ***/
// add host.k3d.internal record to /etc/hosts in all nodes
postStartErrgrp.Go(func() error {
return prepInjectHostIP(postStartErrgrpCtx, runtime, cluster, &clusterStartOpts)
})
if len(servers) > 0 {
postStartErrgrp.Go(func() error {
// -> skip if hostnetwork mode
if cluster.Network.Name == "host" {
l.Log().Debugf("Not injecting hostAliases into /etc/hosts and CoreDNS as clusternetwork is 'host'")
} else {
// -> add hostAliases to /etc/hosts in all nodes
// --> inject host-gateway as host.k3d.internal
clusterStartOpts.HostAliases = append(clusterStartOpts.HostAliases, k3d.HostAlias{
IP: clusterStartOpts.EnvironmentInfo.HostGateway.String(),
Hostnames: []string{"host.k3d.internal"},
})
if cluster.Network.Name == "host" {
l.Log().Debugf("Not injecting host.k3d.internal into CoreDNS as clusternetwork is 'host'")
return nil
}
for _, node := range append(servers, agents...) {
currNode := node
postStartErrgrp.Go(func() error {
return NewHostAliasesInjectEtcHostsAction(runtime, clusterStartOpts.HostAliases).Run(postStartErrgrpCtx, currNode)
})
}
hosts := fmt.Sprintf("%s %s\n", clusterStartOpts.EnvironmentInfo.HostGateway.String(), k3d.DefaultK3dInternalHostRecord)
// -> inject hostAliases and network members into CoreDNS configmap
if len(servers) > 0 {
postStartErrgrp.Go(func() error {
net, err := runtime.GetNetwork(ctx, &cluster.Network)
if err != nil {
return fmt.Errorf("failed to get cluster network %s to inject host records into CoreDNS: %w", cluster.Network.Name, err)
}
for _, member := range net.Members {
hosts += fmt.Sprintf("%s %s\n", member.IP.String(), member.Name)
}
hosts := ""
l.Log().Infof("Injecting records for host.k3d.internal and for %d network members into CoreDNS configmap...", len(net.Members))
act := actions.RewriteFileAction{
Runtime: runtime,
Path: "/var/lib/rancher/k3s/server/manifests/coredns.yaml",
Mode: 0744,
RewriteFunc: func(input []byte) ([]byte, error) {
split, err := util.SplitYAML(input)
if err != nil {
return nil, fmt.Errorf("error splitting yaml: %w", err)
}
// hosts: hostAliases (including host.k3d.internal)
for _, hostAlias := range clusterStartOpts.HostAliases {
hosts += fmt.Sprintf("%s %s\n", hostAlias.IP, strings.Join(hostAlias.Hostnames, " "))
}
var outputBuf bytes.Buffer
outputEncoder := yaml.NewEncoder(&outputBuf)
// more hosts: network members ("neighbor" containers)
net, err := runtime.GetNetwork(postStartErrgrpCtx, &cluster.Network)
if err != nil {
return fmt.Errorf("failed to get cluster network %s to inject host records into CoreDNS: %w", cluster.Network.Name, err)
}
for _, member := range net.Members {
hosts += fmt.Sprintf("%s %s\n", member.IP.String(), member.Name)
}
for _, d := range split {
var doc map[string]interface{}
if err := yaml.Unmarshal(d, &doc); err != nil {
return nil, err
// inject CoreDNS configmap
l.Log().Infof("Injecting records for hostAliases (incl. host.k3d.internal) and for %d network members into CoreDNS configmap...", len(net.Members))
act := actions.RewriteFileAction{
Runtime: runtime,
Path: "/var/lib/rancher/k3s/server/manifests/coredns.yaml",
Mode: 0744,
RewriteFunc: func(input []byte) ([]byte, error) {
split, err := util.SplitYAML(input)
if err != nil {
return nil, fmt.Errorf("error splitting yaml: %w", err)
}
if kind, ok := doc["kind"]; ok {
if strings.ToLower(kind.(string)) == "configmap" {
configmapData := doc["data"].(map[interface{}]interface{})
configmapData["NodeHosts"] = hosts
var outputBuf bytes.Buffer
outputEncoder := yaml.NewEncoder(&outputBuf)
for _, d := range split {
var doc map[string]interface{}
if err := yaml.Unmarshal(d, &doc); err != nil {
return nil, err
}
if kind, ok := doc["kind"]; ok {
if strings.ToLower(kind.(string)) == "configmap" {
configmapData := doc["data"].(map[interface{}]interface{})
configmapData["NodeHosts"] = hosts
}
}
if err := outputEncoder.Encode(doc); err != nil {
return nil, err
}
}
if err := outputEncoder.Encode(doc); err != nil {
return nil, err
}
}
outputEncoder.Close()
return outputBuf.Bytes(), nil
},
}
outputEncoder.Close()
return outputBuf.Bytes(), nil
},
}
// get the first server in the list and run action on it once it's ready for it
for _, n := range cluster.Nodes {
if n.Role == k3d.ServerRole {
ts, err := time.Parse("2006-01-02T15:04:05.999999999Z", n.State.Started)
if err != nil {
return err
}
if err := NodeWaitForLogMessage(ctx, runtime, n, "Cluster dns configmap", ts.Truncate(time.Second)); err != nil {
return err
// get the first server in the list and run action on it once it's ready for it
for _, n := range cluster.Nodes {
if n.Role == k3d.ServerRole {
ts, err := time.Parse("2006-01-02T15:04:05.999999999Z", n.State.Started)
if err != nil {
return err
}
if err := NodeWaitForLogMessage(postStartErrgrpCtx, runtime, n, "Cluster dns configmap", ts.Truncate(time.Second)); err != nil {
return err
}
return act.Run(postStartErrgrpCtx, n)
}
return act.Run(ctx, n)
}
}
return nil
})
return nil
})
}
}
if err := postStartErrgrp.Wait(); err != nil {
@ -1135,33 +1154,6 @@ func corednsAddHost(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Clu
return nil
}
// prepInjectHostIP adds /etc/hosts entry for host.k3d.internal, referring to the host system
func prepInjectHostIP(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Cluster, clusterStartOpts *k3d.ClusterStartOpts) error {
if cluster.Network.Name == "host" {
l.Log().Debugf("Not injecting host.k3d.internal into /etc/hosts as clusternetwork is 'host'")
return nil
}
hostIP := clusterStartOpts.EnvironmentInfo.HostGateway
hostsEntry := fmt.Sprintf("%s %s", hostIP.String(), k3d.DefaultK3dInternalHostRecord)
l.Log().Infof("Injecting '%s' into /etc/hosts of all nodes...", hostsEntry)
// entry in /etc/hosts
errgrp, errgrpctx := errgroup.WithContext(ctx)
for _, node := range cluster.Nodes {
n := node
errgrp.Go(func() error {
return runtime.ExecInNode(errgrpctx, n, []string{"sh", "-c", fmt.Sprintf("echo '%s' >> /etc/hosts", hostsEntry)})
})
}
if err := errgrp.Wait(); err != nil {
return fmt.Errorf("failed to add hosts entry %s: %w", hostsEntry, err)
}
l.Log().Debugf("Successfully added host record \"%s\" to /etc/hosts in all nodes", hostsEntry)
return nil
}
func prepCreateLocalRegistryHostingConfigMap(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Cluster) error {
success := false
for _, node := range cluster.Nodes {

@ -23,10 +23,14 @@ package client
import (
"fmt"
"regexp"
"github.com/rancher/k3d/v5/pkg/types"
)
// HostnameRegexp as per RFC 1123
var HostnameRegexp = regexp.MustCompile(`^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$`)
// CheckName ensures that a cluster name is also a valid host name according to RFC 1123.
// We further restrict the length of the cluster name to maximum 'clusterNameMaxSize'
// so that we can construct the host names based on the cluster name, and still stay
@ -48,21 +52,8 @@ func ValidateHostname(name string) error {
return fmt.Errorf("No name provided")
}
if name[0] == '-' || name[len(name)-1] == '-' {
return fmt.Errorf("Hostname '%s' must not start or end with '-' (dash)", name)
}
for _, c := range name {
switch {
case '0' <= c && c <= '9':
case 'a' <= c && c <= 'z':
case 'A' <= c && c <= 'Z':
case c == '-':
break
default:
return fmt.Errorf("Hostname '%s' contains characters other than 'Aa-Zz', '0-9' or '-'", name)
}
if !HostnameRegexp.Match([]byte(name)) {
return fmt.Errorf("name %s is not a valid hostname as per RFC 1123", name)
}
return nil

@ -0,0 +1,72 @@
/*
Copyright © 2020-2021 The k3d Author(s)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
package client
import (
"fmt"
"os"
"time"
"github.com/goodhosts/hostsfile"
"github.com/rancher/k3d/v5/pkg/actions"
"github.com/rancher/k3d/v5/pkg/runtimes"
k3d "github.com/rancher/k3d/v5/pkg/types"
)
func NewHostAliasesInjectEtcHostsAction(runtime runtimes.Runtime, hostAliases []k3d.HostAlias) actions.RewriteFileAction {
return actions.RewriteFileAction{
Runtime: runtime,
Path: "/etc/hosts",
Mode: 0644,
Description: "Adding HostAliases to /etc/hosts in nodes",
Opts: actions.RewriteFileActionOpts{
NoCopy: true,
},
RewriteFunc: func(input []byte) ([]byte, error) {
tmpHosts, err := os.CreateTemp("", "k3d-hostsfile-*")
if err != nil {
return nil, fmt.Errorf("error creating temp hosts file: %w", err)
}
os.WriteFile(tmpHosts.Name(), input, 0777)
hostsfile, err := hostsfile.NewCustomHosts(tmpHosts.Name())
if err != nil {
return nil, fmt.Errorf("error reading temp hosts file: %w", err)
}
for _, hostAlias := range hostAliases {
if err := hostsfile.Add(hostAlias.IP, hostAlias.Hostnames...); err != nil {
return nil, fmt.Errorf("error adding hosts file entry for %s:%s: %w", hostAlias.IP, hostAlias.Hostnames, err)
}
}
hostsfile.Clean()
hostsfile.Flush()
time.Sleep(time.Second)
return os.ReadFile(tmpHosts.Name())
},
}
}

@ -30,7 +30,6 @@ import (
"fmt"
"io"
"os"
"reflect"
"strconv"
"strings"
"time"
@ -413,9 +412,9 @@ func NodeStart(ctx context.Context, runtime runtimes.Runtime, node *k3d.Node, no
// execute lifecycle hook actions
for _, hook := range nodeStartOpts.NodeHooks {
if hook.Stage == k3d.LifecycleStagePreStart {
l.Log().Tracef("Node %s: Executing preStartAction '%s'", node.Name, reflect.TypeOf(hook))
l.Log().Tracef("Node %s: Executing preStartAction '%s': %s", node.Name, hook.Action.Name(), hook.Action.Info())
if err := hook.Action.Run(ctx, node); err != nil {
l.Log().Errorf("Node %s: Failed executing preStartAction '%+v': %+v", node.Name, hook, err)
l.Log().Errorf("Node %s: Failed executing preStartAction '%s': %s: %+v", node.Name, hook.Action.Name(), hook.Action.Info(), err) // TODO: should we error out on failed preStartAction?
}
}
}

@ -279,6 +279,7 @@ func TransformSimpleToClusterConfig(ctx context.Context, runtime runtimes.Runtim
GPURequest: simpleConfig.Options.Runtime.GPURequest,
ServersMemory: simpleConfig.Options.Runtime.ServersMemory,
AgentsMemory: simpleConfig.Options.Runtime.AgentsMemory,
HostAliases: simpleConfig.HostAliases,
GlobalLabels: map[string]string{}, // empty init
GlobalEnv: []string{}, // empty init
}

@ -301,6 +301,24 @@
},
"additionalProperties": false
}
},
"hostAliases": {
"type": "array",
"description": "Additional IP to multiple hostnames mappings",
"items": {
"type": "object",
"properties": {
"ip": {
"type": "string"
},
"hostnames": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
},
"additionalProperties": false,

@ -29,6 +29,7 @@ import (
"time"
config "github.com/rancher/k3d/v5/pkg/config/types"
"github.com/rancher/k3d/v5/pkg/types"
k3d "github.com/rancher/k3d/v5/pkg/types"
"github.com/rancher/k3d/v5/version"
)
@ -155,6 +156,7 @@ type SimpleConfig struct {
Options SimpleConfigOptions `mapstructure:"options" yaml:"options,omitempty" json:"options,omitempty"`
Env []EnvVarWithNodeFilters `mapstructure:"env" yaml:"env,omitempty" json:"env,omitempty"`
Registries SimpleConfigRegistries `mapstructure:"registries" yaml:"registries,omitempty" json:"registries,omitempty"`
HostAliases []types.HostAlias `mapstructure:"hostAliases" yaml:"hostAliases,omitempty" json:"hostAliases,omitempty"`
}
type SimpleConfigIntermediateV1alpha2 struct {

@ -31,6 +31,7 @@ import (
"github.com/rancher/k3d/v5/pkg/runtimes"
runtimeutil "github.com/rancher/k3d/v5/pkg/runtimes/util"
k3d "github.com/rancher/k3d/v5/pkg/types"
"inet.af/netaddr"
"fmt"
@ -76,6 +77,31 @@ func ValidateClusterConfig(ctx context.Context, runtime runtimes.Runtime, config
}
}
// hostAliases
if len(config.ClusterCreateOpts.HostAliases) > 0 {
// not allowed in hostnetwork mode
if config.Cluster.Network.Name == "host" {
return fmt.Errorf("hostAliases not allowed in hostnetwork mode")
}
// validate IP and hostname
for _, ha := range config.ClusterCreateOpts.HostAliases {
// validate IP
_, err := netaddr.ParseIP(ha.IP)
if err != nil {
return fmt.Errorf("invalid IP '%s' in hostAlias '%s': %w", ha.IP, ha, err)
}
// validate hostnames
for _, hostname := range ha.Hostnames {
if err := k3dc.ValidateHostname(hostname); err != nil {
return fmt.Errorf("invalid hostname '%s' in hostAlias '%s': %w", hostname, ha, err)
}
}
}
}
// validate nodes one by one
for _, node := range config.Cluster.Nodes {

@ -101,6 +101,11 @@ var DoNotCopyServerFlags = []string{
"--cluster-init",
}
type HostAlias struct {
IP string `mapstructure:"ip" yaml:"ip" json:"ip"`
Hostnames []string `mapstructure:"hostnames" yaml:"hostnames" json:"hostnames"`
}
// ClusterCreateOpts describe a set of options one can set when creating a cluster
type ClusterCreateOpts struct {
DisableImageVolume bool `yaml:"disableImageVolume" json:"disableImageVolume,omitempty"`
@ -113,6 +118,7 @@ type ClusterCreateOpts struct {
NodeHooks []NodeHook `yaml:"nodeHooks,omitempty" json:"nodeHooks,omitempty"`
GlobalLabels map[string]string `yaml:"globalLabels,omitempty" json:"globalLabels,omitempty"`
GlobalEnv []string `yaml:"globalEnv,omitempty" json:"globalEnv,omitempty"`
HostAliases []HostAlias `yaml:"hostAliases,omitempty" json:"hostAliases,omitempty"`
Registries struct {
Create *Registry `yaml:"create,omitempty" json:"create,omitempty"`
Use []*Registry `yaml:"use,omitempty" json:"use,omitempty"`
@ -142,6 +148,7 @@ type ClusterStartOpts struct {
NodeHooks []NodeHook `yaml:"nodeHooks,omitempty" json:"nodeHooks,omitempty"`
EnvironmentInfo *EnvironmentInfo
Intent Intent
HostAliases []HostAlias `yaml:"hostAliases,omitempty" json:"hostAliases,omitempty"`
}
// ClusterDeleteOpts describe a set of options one can set when deleting a cluster
@ -288,7 +295,7 @@ type Node struct {
RuntimeLabels map[string]string `yaml:"runtimeLabels" json:"runtimeLabels,omitempty"`
K3sNodeLabels map[string]string `yaml:"k3sNodeLabels" json:"k3sNodeLabels,omitempty"`
Networks []string // filled automatically
ExtraHosts []string // filled automatically
ExtraHosts []string // filled automatically (docker specific?)
ServerOpts ServerOpts `yaml:"serverOpts" json:"serverOpts,omitempty"`
AgentOpts AgentOpts `yaml:"agentOpts" json:"agentOpts,omitempty"`
GPURequest string // filled automatically

@ -0,0 +1,15 @@
bin/
.idea/
# Binaries for programs and plugins
*.exe
*.exe~
*.dll
*.so
*.dylib
# Test binary, built with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out

@ -0,0 +1,12 @@
language: go
dist: xenial
go:
- '1.10'
- '1.11'
- '1.12'
- '1.13'
- 'tip'
script:
- go test -coverpkg=./... -coverprofile=coverage.info -timeout=5s
- bash <(curl -s https://codecov.io/bash)

@ -0,0 +1,43 @@
# Contributor Code of Conduct
This project adheres to [The Code Manifesto](http://codemanifesto.com)
as its guidelines for contributor interactions.
## The Code Manifesto
We want to work in an ecosystem that empowers developers to reach their
potential — one that encourages growth and effective collaboration. A space
that is safe for all.
A space such as this benefits everyone that participates in it. It encourages
new developers to enter our field. It is through discussion and collaboration
that we grow, and through growth that we improve.
In the effort to create such a place, we hold to these values:
1. **Discrimination limits us.** This includes discrimination on the basis of
race, gender, sexual orientation, gender identity, age, nationality,
technology and any other arbitrary exclusion of a group of people.
2. **Boundaries honor us.** Your comfort levels are not everyone’s comfort
levels. Remember that, and if brought to your attention, heed it.
3. **We are our biggest assets.** None of us were born masters of our trade.
Each of us has been helped along the way. Return that favor, when and where
you can.
4. **We are resources for the future.** As an extension of #3, share what you
know. Make yourself a resource to help those that come after you.
5. **Respect defines us.** Treat others as you wish to be treated. Make your
discussions, criticisms and debates from a position of respectfulness. Ask
yourself, is it true? Is it necessary? Is it constructive? Anything less is
unacceptable.
6. **Reactions require grace.** Angry responses are valid, but abusive language
and vindictive actions are toxic. When something happens that offends you,
handle it assertively, but be respectful. Escalate reasonably, and try to
allow the offender an opportunity to explain themselves, and possibly
correct the issue.
7. **Opinions are just that: opinions.** Each and every one of us, due to our
background and upbringing, have varying opinions. That is perfectly
acceptable. Remember this: if you respect your own opinions, you should
respect the opinions of others.
8. **To err is human.** You might not intend it, but mistakes do happen and
contribute to build experience. Tolerate honest mistakes, and don't
hesitate to apologize if you make one yourself.

@ -0,0 +1,63 @@
#### Support
If you do have a contribution to the package, feel free to create a Pull Request or an Issue.
#### What to contribute
If you don't know what to do, there are some features and functions that need to be done
- [ ] Refactor code
- [ ] Edit docs and [README](https://github.com/asaskevich/govalidator/README.md): spellcheck, grammar and typo check
- [ ] Create actual list of contributors and projects that currently using this package
- [ ] Resolve [issues and bugs](https://github.com/asaskevich/govalidator/issues)
- [ ] Update actual [list of functions](https://github.com/asaskevich/govalidator#list-of-functions)
- [ ] Update [list of validators](https://github.com/asaskevich/govalidator#validatestruct-2) that available for `ValidateStruct` and add new
- [ ] Implement new validators: `IsFQDN`, `IsIMEI`, `IsPostalCode`, `IsISIN`, `IsISRC` etc
- [x] Implement [validation by maps](https://github.com/asaskevich/govalidator/issues/224)
- [ ] Implement fuzzing testing
- [ ] Implement some struct/map/array utilities
- [ ] Implement map/array validation
- [ ] Implement benchmarking
- [ ] Implement batch of examples
- [ ] Look at forks for new features and fixes
#### Advice
Feel free to create what you want, but keep in mind when you implement new features:
- Code must be clear and readable, names of variables/constants clearly describes what they are doing
- Public functions must be documented and described in source file and added to README.md to the list of available functions
- There are must be unit-tests for any new functions and improvements
## Financial contributions
We also welcome financial contributions in full transparency on our [open collective](https://opencollective.com/govalidator).
Anyone can file an expense. If the expense makes sense for the development of the community, it will be "merged" in the ledger of our open collective by the core contributors and the person who filed the expense will be reimbursed.
## Credits
### Contributors
Thank you to all the people who have already contributed to govalidator!
<a href="https://github.com/asaskevich/govalidator/graphs/contributors"><img src="https://opencollective.com/govalidator/contributors.svg?width=890" /></a>
### Backers
Thank you to all our backers! [[Become a backer](https://opencollective.com/govalidator#backer)]
<a href="https://opencollective.com/govalidator#backers" target="_blank"><img src="https://opencollective.com/govalidator/backers.svg?width=890"></a>
### Sponsors
Thank you to all our sponsors! (please ask your company to also support this open source project by [becoming a sponsor](https://opencollective.com/govalidator#sponsor))
<a href="https://opencollective.com/govalidator/sponsor/0/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/0/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/1/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/1/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/2/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/2/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/3/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/3/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/4/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/4/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/5/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/5/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/6/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/6/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/7/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/7/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/8/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/8/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/9/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/9/avatar.svg"></a>

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014-2020 Alex Saskevich
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

@ -0,0 +1,622 @@
govalidator
===========
[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/asaskevich/govalidator?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [![GoDoc](https://godoc.org/github.com/asaskevich/govalidator?status.png)](https://godoc.org/github.com/asaskevich/govalidator)
[![Build Status](https://travis-ci.org/asaskevich/govalidator.svg?branch=master)](https://travis-ci.org/asaskevich/govalidator)
[![Coverage](https://codecov.io/gh/asaskevich/govalidator/branch/master/graph/badge.svg)](https://codecov.io/gh/asaskevich/govalidator) [![Go Report Card](https://goreportcard.com/badge/github.com/asaskevich/govalidator)](https://goreportcard.com/report/github.com/asaskevich/govalidator) [![GoSearch](http://go-search.org/badge?id=github.com%2Fasaskevich%2Fgovalidator)](http://go-search.org/view?id=github.com%2Fasaskevich%2Fgovalidator) [![Backers on Open Collective](https://opencollective.com/govalidator/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/govalidator/sponsors/badge.svg)](#sponsors) [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fasaskevich%2Fgovalidator.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fasaskevich%2Fgovalidator?ref=badge_shield)
A package of validators and sanitizers for strings, structs and collections. Based on [validator.js](https://github.com/chriso/validator.js).
#### Installation
Make sure that Go is installed on your computer.
Type the following command in your terminal:
go get github.com/asaskevich/govalidator
or you can get specified release of the package with `gopkg.in`:
go get gopkg.in/asaskevich/govalidator.v10
After it the package is ready to use.
#### Import package in your project
Add following line in your `*.go` file:
```go
import "github.com/asaskevich/govalidator"
```
If you are unhappy to use long `govalidator`, you can do something like this:
```go
import (
valid "github.com/asaskevich/govalidator"
)
```
#### Activate behavior to require all fields have a validation tag by default
`SetFieldsRequiredByDefault` causes validation to fail when struct fields do not include validations or are not explicitly marked as exempt (using `valid:"-"` or `valid:"email,optional"`). A good place to activate this is a package init function or the main() function.
`SetNilPtrAllowedByRequired` causes validation to pass when struct fields marked by `required` are set to nil. This is disabled by default for consistency, but some packages that need to be able to determine between `nil` and `zero value` state can use this. If disabled, both `nil` and `zero` values cause validation errors.
```go
import "github.com/asaskevich/govalidator"
func init() {
govalidator.SetFieldsRequiredByDefault(true)
}
```
Here's some code to explain it:
```go
// this struct definition will fail govalidator.ValidateStruct() (and the field values do not matter):
type exampleStruct struct {
Name string ``
Email string `valid:"email"`
}
// this, however, will only fail when Email is empty or an invalid email address:
type exampleStruct2 struct {
Name string `valid:"-"`
Email string `valid:"email"`
}
// lastly, this will only fail when Email is an invalid email address but not when it's empty:
type exampleStruct2 struct {
Name string `valid:"-"`
Email string `valid:"email,optional"`
}
```
#### Recent breaking changes (see [#123](https://github.com/asaskevich/govalidator/pull/123))
##### Custom validator function signature
A context was added as the second parameter, for structs this is the object being validated – this makes dependent validation possible.
```go
import "github.com/asaskevich/govalidator"
// old signature
func(i interface{}) bool
// new signature
func(i interface{}, o interface{}) bool
```
##### Adding a custom validator
This was changed to prevent data races when accessing custom validators.
```go
import "github.com/asaskevich/govalidator"
// before
govalidator.CustomTypeTagMap["customByteArrayValidator"] = func(i interface{}, o interface{}) bool {
// ...
}
// after
govalidator.CustomTypeTagMap.Set("customByteArrayValidator", func(i interface{}, o interface{}) bool {
// ...
})
```
#### List of functions:
```go
func Abs(value float64) float64
func BlackList(str, chars string) string
func ByteLength(str string, params ...string) bool
func CamelCaseToUnderscore(str string) string
func Contains(str, substring string) bool
func Count(array []interface{}, iterator ConditionIterator) int
func Each(array []interface{}, iterator Iterator)
func ErrorByField(e error, field string) string
func ErrorsByField(e error) map[string]string
func Filter(array []interface{}, iterator ConditionIterator) []interface{}
func Find(array []interface{}, iterator ConditionIterator) interface{}
func GetLine(s string, index int) (string, error)
func GetLines(s string) []string
func HasLowerCase(str string) bool
func HasUpperCase(str string) bool
func HasWhitespace(str string) bool
func HasWhitespaceOnly(str string) bool
func InRange(value interface{}, left interface{}, right interface{}) bool
func InRangeFloat32(value, left, right float32) bool
func InRangeFloat64(value, left, right float64) bool
func InRangeInt(value, left, right interface{}) bool
func IsASCII(str string) bool
func IsAlpha(str string) bool
func IsAlphanumeric(str string) bool
func IsBase64(str string) bool
func IsByteLength(str string, min, max int) bool
func IsCIDR(str string) bool
func IsCRC32(str string) bool
func IsCRC32b(str string) bool
func IsCreditCard(str string) bool
func IsDNSName(str string) bool
func IsDataURI(str string) bool
func IsDialString(str string) bool
func IsDivisibleBy(str, num string) bool
func IsEmail(str string) bool
func IsExistingEmail(email string) bool
func IsFilePath(str string) (bool, int)
func IsFloat(str string) bool
func IsFullWidth(str string) bool
func IsHalfWidth(str string) bool
func IsHash(str string, algorithm string) bool
func IsHexadecimal(str string) bool
func IsHexcolor(str string) bool
func IsHost(str string) bool
func IsIP(str string) bool
func IsIPv4(str string) bool
func IsIPv6(str string) bool
func IsISBN(str string, version int) bool
func IsISBN10(str string) bool
func IsISBN13(str string) bool
func IsISO3166Alpha2(str string) bool
func IsISO3166Alpha3(str string) bool
func IsISO4217(str string) bool
func IsISO693Alpha2(str string) bool
func IsISO693Alpha3b(str string) bool
func IsIn(str string, params ...string) bool
func IsInRaw(str string, params ...string) bool
func IsInt(str string) bool
func IsJSON(str string) bool
func IsLatitude(str string) bool
func IsLongitude(str string) bool
func IsLowerCase(str string) bool
func IsMAC(str string) bool
func IsMD4(str string) bool
func IsMD5(str string) bool
func IsMagnetURI(str string) bool
func IsMongoID(str string) bool
func IsMultibyte(str string) bool
func IsNatural(value float64) bool
func IsNegative(value float64) bool
func IsNonNegative(value float64) bool
func IsNonPositive(value float64) bool
func IsNotNull(str string) bool
func IsNull(str string) bool
func IsNumeric(str string) bool
func IsPort(str string) bool
func IsPositive(value float64) bool
func IsPrintableASCII(str string) bool
func IsRFC3339(str string) bool
func IsRFC3339WithoutZone(str string) bool
func IsRGBcolor(str string) bool
func IsRegex(str string) bool
func IsRequestURI(rawurl string) bool
func IsRequestURL(rawurl string) bool
func IsRipeMD128(str string) bool
func IsRipeMD160(str string) bool
func IsRsaPub(str string, params ...string) bool
func IsRsaPublicKey(str string, keylen int) bool
func IsSHA1(str string) bool
func IsSHA256(str string) bool
func IsSHA384(str string) bool
func IsSHA512(str string) bool
func IsSSN(str string) bool
func IsSemver(str string) bool
func IsTiger128(str string) bool
func IsTiger160(str string) bool
func IsTiger192(str string) bool
func IsTime(str string, format string) bool
func IsType(v interface{}, params ...string) bool
func IsURL(str string) bool
func IsUTFDigit(str string) bool
func IsUTFLetter(str string) bool
func IsUTFLetterNumeric(str string) bool
func IsUTFNumeric(str string) bool
func IsUUID(str string) bool
func IsUUIDv3(str string) bool
func IsUUIDv4(str string) bool
func IsUUIDv5(str string) bool
func IsULID(str string) bool
func IsUnixTime(str string) bool
func IsUpperCase(str string) bool
func IsVariableWidth(str string) bool
func IsWhole(value float64) bool
func LeftTrim(str, chars string) string
func Map(array []interface{}, iterator ResultIterator) []interface{}
func Matches(str, pattern string) bool
func MaxStringLength(str string, params ...string) bool
func MinStringLength(str string, params ...string) bool
func NormalizeEmail(str string) (string, error)
func PadBoth(str string, padStr string, padLen int) string
func PadLeft(str string, padStr string, padLen int) string
func PadRight(str string, padStr string, padLen int) string
func PrependPathToErrors(err error, path string) error
func Range(str string, params ...string) bool
func RemoveTags(s string) string
func ReplacePattern(str, pattern, replace string) string
func Reverse(s string) string
func RightTrim(str, chars string) string
func RuneLength(str string, params ...string) bool
func SafeFileName(str string) string
func SetFieldsRequiredByDefault(value bool)
func SetNilPtrAllowedByRequired(value bool)
func Sign(value float64) float64
func StringLength(str string, params ...string) bool
func StringMatches(s string, params ...string) bool
func StripLow(str string, keepNewLines bool) string
func ToBoolean(str string) (bool, error)
func ToFloat(str string) (float64, error)
func ToInt(value interface{}) (res int64, err error)
func ToJSON(obj interface{}) (string, error)
func ToString(obj interface{}) string
func Trim(str, chars string) string
func Truncate(str string, length int, ending string) string
func TruncatingErrorf(str string, args ...interface{}) error
func UnderscoreToCamelCase(s string) string
func ValidateMap(inputMap map[string]interface{}, validationMap map[string]interface{}) (bool, error)
func ValidateStruct(s interface{}) (bool, error)
func WhiteList(str, chars string) string
type ConditionIterator
type CustomTypeValidator
type Error
func (e Error) Error() string
type Errors
func (es Errors) Error() string
func (es Errors) Errors() []error
type ISO3166Entry
type ISO693Entry
type InterfaceParamValidator
type Iterator
type ParamValidator
type ResultIterator
type UnsupportedTypeError
func (e *UnsupportedTypeError) Error() string
type Validator
```
#### Examples
###### IsURL
```go
println(govalidator.IsURL(`http://user@pass:domain.com/path/page`))
```
###### IsType
```go
println(govalidator.IsType("Bob", "string"))
println(govalidator.IsType(1, "int"))
i := 1
println(govalidator.IsType(&i, "*int"))
```
IsType can be used through the tag `type` which is essential for map validation:
```go
type User struct {
Name string `valid:"type(string)"`
Age int `valid:"type(int)"`
Meta interface{} `valid:"type(string)"`
}
result, err := govalidator.ValidateStruct(User{"Bob", 20, "meta"})
if err != nil {
println("error: " + err.Error())
}
println(result)
```
###### ToString
```go
type User struct {
FirstName string
LastName string
}
str := govalidator.ToString(&User{"John", "Juan"})
println(str)
```
###### Each, Map, Filter, Count for slices
Each iterates over the slice/array and calls Iterator for every item
```go
data := []interface{}{1, 2, 3, 4, 5}
var fn govalidator.Iterator = func(value interface{}, index int) {
println(value.(int))
}
govalidator.Each(data, fn)
```
```go
data := []interface{}{1, 2, 3, 4, 5}
var fn govalidator.ResultIterator = func(value interface{}, index int) interface{} {
return value.(int) * 3
}
_ = govalidator.Map(data, fn) // result = []interface{}{1, 6, 9, 12, 15}
```
```go
data := []interface{}{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
var fn govalidator.ConditionIterator = func(value interface{}, index int) bool {
return value.(int)%2 == 0
}
_ = govalidator.Filter(data, fn) // result = []interface{}{2, 4, 6, 8, 10}
_ = govalidator.Count(data, fn) // result = 5
```
###### ValidateStruct [#2](https://github.com/asaskevich/govalidator/pull/2)
If you want to validate structs, you can use tag `valid` for any field in your structure. All validators used with this field in one tag are separated by comma. If you want to skip validation, place `-` in your tag. If you need a validator that is not on the list below, you can add it like this:
```go
govalidator.TagMap["duck"] = govalidator.Validator(func(str string) bool {
return str == "duck"
})
```
For completely custom validators (interface-based), see below.
Here is a list of available validators for struct fields (validator - used function):
```go
"email": IsEmail,
"url": IsURL,
"dialstring": IsDialString,
"requrl": IsRequestURL,
"requri": IsRequestURI,
"alpha": IsAlpha,
"utfletter": IsUTFLetter,
"alphanum": IsAlphanumeric,
"utfletternum": IsUTFLetterNumeric,
"numeric": IsNumeric,
"utfnumeric": IsUTFNumeric,
"utfdigit": IsUTFDigit,
"hexadecimal": IsHexadecimal,
"hexcolor": IsHexcolor,
"rgbcolor": IsRGBcolor,
"lowercase": IsLowerCase,
"uppercase": IsUpperCase,
"int": IsInt,
"float": IsFloat,
"null": IsNull,
"uuid": IsUUID,
"uuidv3": IsUUIDv3,
"uuidv4": IsUUIDv4,
"uuidv5": IsUUIDv5,
"creditcard": IsCreditCard,
"isbn10": IsISBN10,
"isbn13": IsISBN13,
"json": IsJSON,
"multibyte": IsMultibyte,
"ascii": IsASCII,
"printableascii": IsPrintableASCII,
"fullwidth": IsFullWidth,
"halfwidth": IsHalfWidth,
"variablewidth": IsVariableWidth,
"base64": IsBase64,
"datauri": IsDataURI,
"ip": IsIP,
"port": IsPort,
"ipv4": IsIPv4,
"ipv6": IsIPv6,
"dns": IsDNSName,
"host": IsHost,
"mac": IsMAC,
"latitude": IsLatitude,
"longitude": IsLongitude,
"ssn": IsSSN,
"semver": IsSemver,
"rfc3339": IsRFC3339,
"rfc3339WithoutZone": IsRFC3339WithoutZone,
"ISO3166Alpha2": IsISO3166Alpha2,
"ISO3166Alpha3": IsISO3166Alpha3,
"ulid": IsULID,
```
Validators with parameters
```go
"range(min|max)": Range,
"length(min|max)": ByteLength,
"runelength(min|max)": RuneLength,
"stringlength(min|max)": StringLength,
"matches(pattern)": StringMatches,
"in(string1|string2|...|stringN)": IsIn,
"rsapub(keylength)" : IsRsaPub,
"minstringlength(int): MinStringLength,
"maxstringlength(int): MaxStringLength,
```
Validators with parameters for any type
```go
"type(type)": IsType,
```
And here is small example of usage:
```go
type Post struct {
Title string `valid:"alphanum,required"`
Message string `valid:"duck,ascii"`
Message2 string `valid:"animal(dog)"`
AuthorIP string `valid:"ipv4"`
Date string `valid:"-"`
}
post := &Post{
Title: "My Example Post",
Message: "duck",
Message2: "dog",
AuthorIP: "123.234.54.3",
}
// Add your own struct validation tags
govalidator.TagMap["duck"] = govalidator.Validator(func(str string) bool {
return str == "duck"
})
// Add your own struct validation tags with parameter
govalidator.ParamTagMap["animal"] = govalidator.ParamValidator(func(str string, params ...string) bool {
species := params[0]
return str == species
})
govalidator.ParamTagRegexMap["animal"] = regexp.MustCompile("^animal\\((\\w+)\\)$")
result, err := govalidator.ValidateStruct(post)
if err != nil {
println("error: " + err.Error())
}
println(result)
```
###### ValidateMap [#2](https://github.com/asaskevich/govalidator/pull/338)
If you want to validate maps, you can use the map to be validated and a validation map that contain the same tags used in ValidateStruct, both maps have to be in the form `map[string]interface{}`
So here is small example of usage:
```go
var mapTemplate = map[string]interface{}{
"name":"required,alpha",
"family":"required,alpha",
"email":"required,email",
"cell-phone":"numeric",
"address":map[string]interface{}{
"line1":"required,alphanum",
"line2":"alphanum",
"postal-code":"numeric",
},
}
var inputMap = map[string]interface{}{
"name":"Bob",
"family":"Smith",
"email":"foo@bar.baz",
"address":map[string]interface{}{
"line1":"",
"line2":"",
"postal-code":"",
},
}
result, err := govalidator.ValidateMap(inputMap, mapTemplate)
if err != nil {
println("error: " + err.Error())
}
println(result)
```
###### WhiteList
```go
// Remove all characters from string ignoring characters between "a" and "z"
println(govalidator.WhiteList("a3a43a5a4a3a2a23a4a5a4a3a4", "a-z") == "aaaaaaaaaaaa")
```
###### Custom validation functions
Custom validation using your own domain specific validators is also available - here's an example of how to use it:
```go
import "github.com/asaskevich/govalidator"
type CustomByteArray [6]byte // custom types are supported and can be validated
type StructWithCustomByteArray struct {
ID CustomByteArray `valid:"customByteArrayValidator,customMinLengthValidator"` // multiple custom validators are possible as well and will be evaluated in sequence
Email string `valid:"email"`
CustomMinLength int `valid:"-"`
}
govalidator.CustomTypeTagMap.Set("customByteArrayValidator", func(i interface{}, context interface{}) bool {
switch v := context.(type) { // you can type switch on the context interface being validated
case StructWithCustomByteArray:
// you can check and validate against some other field in the context,
// return early or not validate against the context at all – your choice
case SomeOtherType:
// ...
default:
// expecting some other type? Throw/panic here or continue
}
switch v := i.(type) { // type switch on the struct field being validated
case CustomByteArray:
for _, e := range v { // this validator checks that the byte array is not empty, i.e. not all zeroes
if e != 0 {
return true
}
}
}
return false
})
govalidator.CustomTypeTagMap.Set("customMinLengthValidator", func(i interface{}, context interface{}) bool {
switch v := context.(type) { // this validates a field against the value in another field, i.e. dependent validation
case StructWithCustomByteArray:
return len(v.ID) >= v.CustomMinLength
}
return false
})
```
###### Loop over Error()
By default .Error() returns all errors in a single String. To access each error you can do this:
```go
if err != nil {
errs := err.(govalidator.Errors).Errors()
for _, e := range errs {
fmt.Println(e.Error())
}
}
```
###### Custom error messages
Custom error messages are supported via annotations by adding the `~` separator - here's an example of how to use it:
```go
type Ticket struct {
Id int64 `json:"id"`
FirstName string `json:"firstname" valid:"required~First name is blank"`
}
```
#### Notes
Documentation is available here: [godoc.org](https://godoc.org/github.com/asaskevich/govalidator).
Full information about code coverage is also available here: [govalidator on gocover.io](http://gocover.io/github.com/asaskevich/govalidator).
#### Support
If you do have a contribution to the package, feel free to create a Pull Request or an Issue.
#### What to contribute
If you don't know what to do, there are some features and functions that need to be done
- [ ] Refactor code
- [ ] Edit docs and [README](https://github.com/asaskevich/govalidator/README.md): spellcheck, grammar and typo check
- [ ] Create actual list of contributors and projects that currently using this package
- [ ] Resolve [issues and bugs](https://github.com/asaskevich/govalidator/issues)
- [ ] Update actual [list of functions](https://github.com/asaskevich/govalidator#list-of-functions)
- [ ] Update [list of validators](https://github.com/asaskevich/govalidator#validatestruct-2) that available for `ValidateStruct` and add new
- [ ] Implement new validators: `IsFQDN`, `IsIMEI`, `IsPostalCode`, `IsISIN`, `IsISRC` etc
- [x] Implement [validation by maps](https://github.com/asaskevich/govalidator/issues/224)
- [ ] Implement fuzzing testing
- [ ] Implement some struct/map/array utilities
- [ ] Implement map/array validation
- [ ] Implement benchmarking
- [ ] Implement batch of examples
- [ ] Look at forks for new features and fixes
#### Advice
Feel free to create what you want, but keep in mind when you implement new features:
- Code must be clear and readable, names of variables/constants clearly describes what they are doing
- Public functions must be documented and described in source file and added to README.md to the list of available functions
- There are must be unit-tests for any new functions and improvements
## Credits
### Contributors
This project exists thanks to all the people who contribute. [[Contribute](CONTRIBUTING.md)].
#### Special thanks to [contributors](https://github.com/asaskevich/govalidator/graphs/contributors)
* [Daniel Lohse](https://github.com/annismckenzie)
* [Attila Oláh](https://github.com/attilaolah)
* [Daniel Korner](https://github.com/Dadie)
* [Steven Wilkin](https://github.com/stevenwilkin)
* [Deiwin Sarjas](https://github.com/deiwin)
* [Noah Shibley](https://github.com/slugmobile)
* [Nathan Davies](https://github.com/nathj07)
* [Matt Sanford](https://github.com/mzsanford)
* [Simon ccl1115](https://github.com/ccl1115)
<a href="https://github.com/asaskevich/govalidator/graphs/contributors"><img src="https://opencollective.com/govalidator/contributors.svg?width=890" /></a>
### Backers
Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/govalidator#backer)]
<a href="https://opencollective.com/govalidator#backers" target="_blank"><img src="https://opencollective.com/govalidator/backers.svg?width=890"></a>
### Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/govalidator#sponsor)]
<a href="https://opencollective.com/govalidator/sponsor/0/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/0/avatar.svg"></a>
<a href="https://opencollective.com/govalidator/sponsor/1/website" target="_blank"><img src="https://opencollective.com/govalidator/sponsor/1/avatar.svg"></a>
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## License
[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fasaskevich%2Fgovalidator.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fasaskevich%2Fgovalidator?ref=badge_large)

@ -0,0 +1,87 @@
package govalidator
// Iterator is the function that accepts element of slice/array and its index
type Iterator func(interface{}, int)
// ResultIterator is the function that accepts element of slice/array and its index and returns any result
type ResultIterator func(interface{}, int) interface{}
// ConditionIterator is the function that accepts element of slice/array and its index and returns boolean
type ConditionIterator func(interface{}, int) bool
// ReduceIterator is the function that accepts two element of slice/array and returns result of merging those values
type ReduceIterator func(interface{}, interface{}) interface{}
// Some validates that any item of array corresponds to ConditionIterator. Returns boolean.
func Some(array []interface{}, iterator ConditionIterator) bool {
res := false
for index, data := range array {
res = res || iterator(data, index)
}
return res
}
// Every validates that every item of array corresponds to ConditionIterator. Returns boolean.
func Every(array []interface{}, iterator ConditionIterator) bool {
res := true
for index, data := range array {
res = res && iterator(data, index)
}
return res
}
// Reduce boils down a list of values into a single value by ReduceIterator
func Reduce(array []interface{}, iterator ReduceIterator, initialValue interface{}) interface{} {
for _, data := range array {
initialValue = iterator(initialValue, data)
}
return initialValue
}
// Each iterates over the slice and apply Iterator to every item
func Each(array []interface{}, iterator Iterator) {
for index, data := range array {
iterator(data, index)
}
}
// Map iterates over the slice and apply ResultIterator to every item. Returns new slice as a result.
func Map(array []interface{}, iterator ResultIterator) []interface{} {
var result = make([]interface{}, len(array))
for index, data := range array {
result[index] = iterator(data, index)
}
return result
}
// Find iterates over the slice and apply ConditionIterator to every item. Returns first item that meet ConditionIterator or nil otherwise.
func Find(array []interface{}, iterator ConditionIterator) interface{} {
for index, data := range array {
if iterator(data, index) {
return data
}
}
return nil
}
// Filter iterates over the slice and apply ConditionIterator to every item. Returns new slice.
func Filter(array []interface{}, iterator ConditionIterator) []interface{} {
var result = make([]interface{}, 0)
for index, data := range array {
if iterator(data, index) {
result = append(result, data)
}
}
return result
}
// Count iterates over the slice and apply ConditionIterator to every item. Returns count of items that meets ConditionIterator.
func Count(array []interface{}, iterator ConditionIterator) int {
count := 0
for index, data := range array {
if iterator(data, index) {
count = count + 1
}
}
return count
}

@ -0,0 +1,81 @@
package govalidator
import (
"encoding/json"
"fmt"
"reflect"
"strconv"
)
// ToString convert the input to a string.
func ToString(obj interface{}) string {
res := fmt.Sprintf("%v", obj)
return res
}
// ToJSON convert the input to a valid JSON string
func ToJSON(obj interface{}) (string, error) {
res, err := json.Marshal(obj)
if err != nil {
res = []byte("")
}
return string(res), err
}
// ToFloat convert the input string to a float, or 0.0 if the input is not a float.
func ToFloat(value interface{}) (res float64, err error) {
val := reflect.ValueOf(value)
switch value.(type) {
case int, int8, int16, int32, int64:
res = float64(val.Int())
case uint, uint8, uint16, uint32, uint64:
res = float64(val.Uint())
case float32, float64:
res = val.Float()
case string:
res, err = strconv.ParseFloat(val.String(), 64)
if err != nil {
res = 0
}
default:
err = fmt.Errorf("ToInt: unknown interface type %T", value)
res = 0
}
return
}
// ToInt convert the input string or any int type to an integer type 64, or 0 if the input is not an integer.
func ToInt(value interface{}) (res int64, err error) {
val := reflect.ValueOf(value)
switch value.(type) {
case int, int8, int16, int32, int64:
res = val.Int()
case uint, uint8, uint16, uint32, uint64:
res = int64(val.Uint())
case float32, float64:
res = int64(val.Float())
case string:
if IsInt(val.String()) {
res, err = strconv.ParseInt(val.String(), 0, 64)
if err != nil {
res = 0
}
} else {
err = fmt.Errorf("ToInt: invalid numeric format %g", value)
res = 0
}
default:
err = fmt.Errorf("ToInt: unknown interface type %T", value)
res = 0
}
return
}
// ToBoolean convert the input string to a boolean.
func ToBoolean(str string) (bool, error) {
return strconv.ParseBool(str)
}

@ -0,0 +1,3 @@
package govalidator
// A package of validators and sanitizers for strings, structures and collections.

@ -0,0 +1,47 @@
package govalidator
import (
"sort"
"strings"
)
// Errors is an array of multiple errors and conforms to the error interface.
type Errors []error
// Errors returns itself.
func (es Errors) Errors() []error {
return es
}
func (es Errors) Error() string {
var errs []string
for _, e := range es {
errs = append(errs, e.Error())
}
sort.Strings(errs)
return strings.Join(errs, ";")
}
// Error encapsulates a name, an error and whether there's a custom error message or not.
type Error struct {
Name string
Err error
CustomErrorMessageExists bool
// Validator indicates the name of the validator that failed
Validator string
Path []string
}
func (e Error) Error() string {
if e.CustomErrorMessageExists {
return e.Err.Error()
}
errName := e.Name
if len(e.Path) > 0 {
errName = strings.Join(append(e.Path, e.Name), ".")
}
return errName + ": " + e.Err.Error()
}

@ -0,0 +1,100 @@
package govalidator
import (
"math"
)
// Abs returns absolute value of number
func Abs(value float64) float64 {
return math.Abs(value)
}
// Sign returns signum of number: 1 in case of value > 0, -1 in case of value < 0, 0 otherwise
func Sign(value float64) float64 {
if value > 0 {
return 1
} else if value < 0 {
return -1
} else {
return 0
}
}
// IsNegative returns true if value < 0
func IsNegative(value float64) bool {
return value < 0
}
// IsPositive returns true if value > 0
func IsPositive(value float64) bool {
return value > 0
}
// IsNonNegative returns true if value >= 0
func IsNonNegative(value float64) bool {
return value >= 0
}
// IsNonPositive returns true if value <= 0
func IsNonPositive(value float64) bool {
return value <= 0
}
// InRangeInt returns true if value lies between left and right border
func InRangeInt(value, left, right interface{}) bool {
value64, _ := ToInt(value)
left64, _ := ToInt(left)
right64, _ := ToInt(right)
if left64 > right64 {
left64, right64 = right64, left64
}
return value64 >= left64 && value64 <= right64
}
// InRangeFloat32 returns true if value lies between left and right border
func InRangeFloat32(value, left, right float32) bool {
if left > right {
left, right = right, left
}
return value >= left && value <= right
}
// InRangeFloat64 returns true if value lies between left and right border
func InRangeFloat64(value, left, right float64) bool {
if left > right {
left, right = right, left
}
return value >= left && value <= right
}
// InRange returns true if value lies between left and right border, generic type to handle int, float32, float64 and string.
// All types must the same type.
// False if value doesn't lie in range or if it incompatible or not comparable
func InRange(value interface{}, left interface{}, right interface{}) bool {
switch value.(type) {
case int:
intValue, _ := ToInt(value)
intLeft, _ := ToInt(left)
intRight, _ := ToInt(right)
return InRangeInt(intValue, intLeft, intRight)
case float32, float64:
intValue, _ := ToFloat(value)
intLeft, _ := ToFloat(left)
intRight, _ := ToFloat(right)
return InRangeFloat64(intValue, intLeft, intRight)
case string:
return value.(string) >= left.(string) && value.(string) <= right.(string)
default:
return false
}
}
// IsWhole returns true if value is whole number
func IsWhole(value float64) bool {
return math.Remainder(value, 1) == 0
}
// IsNatural returns true if value is natural number (positive and whole)
func IsNatural(value float64) bool {
return IsWhole(value) && IsPositive(value)
}

@ -0,0 +1,113 @@
package govalidator
import "regexp"
// Basic regular expressions for validating strings
const (
Email string = "^(((([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
CreditCard string = "^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11}|6[27][0-9]{14})$"
ISBN10 string = "^(?:[0-9]{9}X|[0-9]{10})$"
ISBN13 string = "^(?:[0-9]{13})$"
UUID3 string = "^[0-9a-f]{8}-[0-9a-f]{4}-3[0-9a-f]{3}-[0-9a-f]{4}-[0-9a-f]{12}$"
UUID4 string = "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
UUID5 string = "^[0-9a-f]{8}-[0-9a-f]{4}-5[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
UUID string = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
Alpha string = "^[a-zA-Z]+$"
Alphanumeric string = "^[a-zA-Z0-9]+$"
Numeric string = "^[0-9]+$"
Int string = "^(?:[-+]?(?:0|[1-9][0-9]*))$"
Float string = "^(?:[-+]?(?:[0-9]+))?(?:\\.[0-9]*)?(?:[eE][\\+\\-]?(?:[0-9]+))?$"
Hexadecimal string = "^[0-9a-fA-F]+$"
Hexcolor string = "^#?([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
RGBcolor string = "^rgb\\(\\s*(0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*\\)$"
ASCII string = "^[\x00-\x7F]+$"
Multibyte string = "[^\x00-\x7F]"
FullWidth string = "[^\u0020-\u007E\uFF61-\uFF9F\uFFA0-\uFFDC\uFFE8-\uFFEE0-9a-zA-Z]"
HalfWidth string = "[\u0020-\u007E\uFF61-\uFF9F\uFFA0-\uFFDC\uFFE8-\uFFEE0-9a-zA-Z]"
Base64 string = "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"
PrintableASCII string = "^[\x20-\x7E]+$"
DataURI string = "^data:.+\\/(.+);base64$"
MagnetURI string = "^magnet:\\?xt=urn:[a-zA-Z0-9]+:[a-zA-Z0-9]{32,40}&dn=.+&tr=.+$"
Latitude string = "^[-+]?([1-8]?\\d(\\.\\d+)?|90(\\.0+)?)$"
Longitude string = "^[-+]?(180(\\.0+)?|((1[0-7]\\d)|([1-9]?\\d))(\\.\\d+)?)$"
DNSName string = `^([a-zA-Z0-9_]{1}[a-zA-Z0-9_-]{0,62}){1}(\.[a-zA-Z0-9_]{1}[a-zA-Z0-9_-]{0,62})*[\._]?$`
IP string = `(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))`
URLSchema string = `((ftp|tcp|udp|wss?|https?):\/\/)`
URLUsername string = `(\S+(:\S*)?@)`
URLPath string = `((\/|\?|#)[^\s]*)`
URLPort string = `(:(\d{1,5}))`
URLIP string = `([1-9]\d?|1\d\d|2[01]\d|22[0-3]|24\d|25[0-5])(\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])){2}(?:\.([0-9]\d?|1\d\d|2[0-4]\d|25[0-5]))`
URLSubdomain string = `((www\.)|([a-zA-Z0-9]+([-_\.]?[a-zA-Z0-9])*[a-zA-Z0-9]\.[a-zA-Z0-9]+))`
URL = `^` + URLSchema + `?` + URLUsername + `?` + `((` + URLIP + `|(\[` + IP + `\])|(([a-zA-Z0-9]([a-zA-Z0-9-_]+)?[a-zA-Z0-9]([-\.][a-zA-Z0-9]+)*)|(` + URLSubdomain + `?))?(([a-zA-Z\x{00a1}-\x{ffff}0-9]+-?-?)*[a-zA-Z\x{00a1}-\x{ffff}0-9]+)(?:\.([a-zA-Z\x{00a1}-\x{ffff}]{1,}))?))\.?` + URLPort + `?` + URLPath + `?$`
SSN string = `^\d{3}[- ]?\d{2}[- ]?\d{4}$`
WinPath string = `^[a-zA-Z]:\\(?:[^\\/:*?"<>|\r\n]+\\)*[^\\/:*?"<>|\r\n]*$`
UnixPath string = `^(/[^/\x00]*)+/?$`
WinARPath string = `^(?:(?:[a-zA-Z]:|\\\\[a-z0-9_.$â—Ź-]+\\[a-z0-9_.$â—Ź-]+)\\|\\?[^\\/:*?"<>|\r\n]+\\?)(?:[^\\/:*?"<>|\r\n]+\\)*[^\\/:*?"<>|\r\n]*$`
UnixARPath string = `^((\.{0,2}/)?([^/\x00]*))+/?$`
Semver string = "^v?(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)(-(0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(\\.(0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*)?(\\+[0-9a-zA-Z-]+(\\.[0-9a-zA-Z-]+)*)?$"
tagName string = "valid"
hasLowerCase string = ".*[[:lower:]]"
hasUpperCase string = ".*[[:upper:]]"
hasWhitespace string = ".*[[:space:]]"
hasWhitespaceOnly string = "^[[:space:]]+$"
IMEI string = "^[0-9a-f]{14}$|^\\d{15}$|^\\d{18}$"
IMSI string = "^\\d{14,15}$"
E164 string = `^\+?[1-9]\d{1,14}$`
)
// Used by IsFilePath func
const (
// Unknown is unresolved OS type
Unknown = iota
// Win is Windows type
Win
// Unix is *nix OS types
Unix
)
var (
userRegexp = regexp.MustCompile("^[a-zA-Z0-9!#$%&'*+/=?^_`{|}~.-]+$")
hostRegexp = regexp.MustCompile("^[^\\s]+\\.[^\\s]+$")
userDotRegexp = regexp.MustCompile("(^[.]{1})|([.]{1}$)|([.]{2,})")
rxEmail = regexp.MustCompile(Email)
rxCreditCard = regexp.MustCompile(CreditCard)
rxISBN10 = regexp.MustCompile(ISBN10)
rxISBN13 = regexp.MustCompile(ISBN13)
rxUUID3 = regexp.MustCompile(UUID3)
rxUUID4 = regexp.MustCompile(UUID4)
rxUUID5 = regexp.MustCompile(UUID5)
rxUUID = regexp.MustCompile(UUID)
rxAlpha = regexp.MustCompile(Alpha)
rxAlphanumeric = regexp.MustCompile(Alphanumeric)
rxNumeric = regexp.MustCompile(Numeric)
rxInt = regexp.MustCompile(Int)
rxFloat = regexp.MustCompile(Float)
rxHexadecimal = regexp.MustCompile(Hexadecimal)
rxHexcolor = regexp.MustCompile(Hexcolor)
rxRGBcolor = regexp.MustCompile(RGBcolor)
rxASCII = regexp.MustCompile(ASCII)
rxPrintableASCII = regexp.MustCompile(PrintableASCII)
rxMultibyte = regexp.MustCompile(Multibyte)
rxFullWidth = regexp.MustCompile(FullWidth)
rxHalfWidth = regexp.MustCompile(HalfWidth)
rxBase64 = regexp.MustCompile(Base64)
rxDataURI = regexp.MustCompile(DataURI)
rxMagnetURI = regexp.MustCompile(MagnetURI)
rxLatitude = regexp.MustCompile(Latitude)
rxLongitude = regexp.MustCompile(Longitude)
rxDNSName = regexp.MustCompile(DNSName)
rxURL = regexp.MustCompile(URL)
rxSSN = regexp.MustCompile(SSN)
rxWinPath = regexp.MustCompile(WinPath)
rxUnixPath = regexp.MustCompile(UnixPath)
rxARWinPath = regexp.MustCompile(WinARPath)
rxARUnixPath = regexp.MustCompile(UnixARPath)
rxSemver = regexp.MustCompile(Semver)
rxHasLowerCase = regexp.MustCompile(hasLowerCase)
rxHasUpperCase = regexp.MustCompile(hasUpperCase)
rxHasWhitespace = regexp.MustCompile(hasWhitespace)
rxHasWhitespaceOnly = regexp.MustCompile(hasWhitespaceOnly)
rxIMEI = regexp.MustCompile(IMEI)
rxIMSI = regexp.MustCompile(IMSI)
rxE164 = regexp.MustCompile(E164)
)

@ -0,0 +1,656 @@
package govalidator
import (
"reflect"
"regexp"
"sort"
"sync"
)
// Validator is a wrapper for a validator function that returns bool and accepts string.
type Validator func(str string) bool
// CustomTypeValidator is a wrapper for validator functions that returns bool and accepts any type.
// The second parameter should be the context (in the case of validating a struct: the whole object being validated).
type CustomTypeValidator func(i interface{}, o interface{}) bool
// ParamValidator is a wrapper for validator functions that accept additional parameters.
type ParamValidator func(str string, params ...string) bool
// InterfaceParamValidator is a wrapper for functions that accept variants parameters for an interface value
type InterfaceParamValidator func(in interface{}, params ...string) bool
type tagOptionsMap map[string]tagOption
func (t tagOptionsMap) orderedKeys() []string {
var keys []string
for k := range t {
keys = append(keys, k)
}
sort.Slice(keys, func(a, b int) bool {
return t[keys[a]].order < t[keys[b]].order
})
return keys
}
type tagOption struct {
name string
customErrorMessage string
order int
}
// UnsupportedTypeError is a wrapper for reflect.Type
type UnsupportedTypeError struct {
Type reflect.Type
}
// stringValues is a slice of reflect.Value holding *reflect.StringValue.
// It implements the methods to sort by string.
type stringValues []reflect.Value
// InterfaceParamTagMap is a map of functions accept variants parameters for an interface value
var InterfaceParamTagMap = map[string]InterfaceParamValidator{
"type": IsType,
}
// InterfaceParamTagRegexMap maps interface param tags to their respective regexes.
var InterfaceParamTagRegexMap = map[string]*regexp.Regexp{
"type": regexp.MustCompile(`^type\((.*)\)$`),
}
// ParamTagMap is a map of functions accept variants parameters
var ParamTagMap = map[string]ParamValidator{
"length": ByteLength,
"range": Range,
"runelength": RuneLength,
"stringlength": StringLength,
"matches": StringMatches,
"in": IsInRaw,
"rsapub": IsRsaPub,
"minstringlength": MinStringLength,
"maxstringlength": MaxStringLength,
}
// ParamTagRegexMap maps param tags to their respective regexes.
var ParamTagRegexMap = map[string]*regexp.Regexp{
"range": regexp.MustCompile("^range\\((\\d+)\\|(\\d+)\\)$"),
"length": regexp.MustCompile("^length\\((\\d+)\\|(\\d+)\\)$"),
"runelength": regexp.MustCompile("^runelength\\((\\d+)\\|(\\d+)\\)$"),
"stringlength": regexp.MustCompile("^stringlength\\((\\d+)\\|(\\d+)\\)$"),
"in": regexp.MustCompile(`^in\((.*)\)`),
"matches": regexp.MustCompile(`^matches\((.+)\)$`),
"rsapub": regexp.MustCompile("^rsapub\\((\\d+)\\)$"),
"minstringlength": regexp.MustCompile("^minstringlength\\((\\d+)\\)$"),
"maxstringlength": regexp.MustCompile("^maxstringlength\\((\\d+)\\)$"),
}
type customTypeTagMap struct {
validators map[string]CustomTypeValidator
sync.RWMutex
}
func (tm *customTypeTagMap) Get(name string) (CustomTypeValidator, bool) {
tm.RLock()
defer tm.RUnlock()
v, ok := tm.validators[name]
return v, ok
}
func (tm *customTypeTagMap) Set(name string, ctv CustomTypeValidator) {
tm.Lock()
defer tm.Unlock()
tm.validators[name] = ctv
}
// CustomTypeTagMap is a map of functions that can be used as tags for ValidateStruct function.
// Use this to validate compound or custom types that need to be handled as a whole, e.g.
// `type UUID [16]byte` (this would be handled as an array of bytes).
var CustomTypeTagMap = &customTypeTagMap{validators: make(map[string]CustomTypeValidator)}
// TagMap is a map of functions, that can be used as tags for ValidateStruct function.
var TagMap = map[string]Validator{
"email": IsEmail,
"url": IsURL,
"dialstring": IsDialString,
"requrl": IsRequestURL,
"requri": IsRequestURI,
"alpha": IsAlpha,
"utfletter": IsUTFLetter,
"alphanum": IsAlphanumeric,
"utfletternum": IsUTFLetterNumeric,
"numeric": IsNumeric,
"utfnumeric": IsUTFNumeric,
"utfdigit": IsUTFDigit,
"hexadecimal": IsHexadecimal,
"hexcolor": IsHexcolor,
"rgbcolor": IsRGBcolor,
"lowercase": IsLowerCase,
"uppercase": IsUpperCase,
"int": IsInt,
"float": IsFloat,
"null": IsNull,
"notnull": IsNotNull,
"uuid": IsUUID,
"uuidv3": IsUUIDv3,
"uuidv4": IsUUIDv4,
"uuidv5": IsUUIDv5,
"creditcard": IsCreditCard,
"isbn10": IsISBN10,
"isbn13": IsISBN13,
"json": IsJSON,
"multibyte": IsMultibyte,
"ascii": IsASCII,
"printableascii": IsPrintableASCII,
"fullwidth": IsFullWidth,
"halfwidth": IsHalfWidth,
"variablewidth": IsVariableWidth,
"base64": IsBase64,
"datauri": IsDataURI,
"ip": IsIP,
"port": IsPort,
"ipv4": IsIPv4,
"ipv6": IsIPv6,
"dns": IsDNSName,
"host": IsHost,
"mac": IsMAC,
"latitude": IsLatitude,
"longitude": IsLongitude,
"ssn": IsSSN,
"semver": IsSemver,
"rfc3339": IsRFC3339,
"rfc3339WithoutZone": IsRFC3339WithoutZone,
"ISO3166Alpha2": IsISO3166Alpha2,
"ISO3166Alpha3": IsISO3166Alpha3,
"ISO4217": IsISO4217,
"IMEI": IsIMEI,
"ulid": IsULID,
}
// ISO3166Entry stores country codes
type ISO3166Entry struct {
EnglishShortName string
FrenchShortName string
Alpha2Code string
Alpha3Code string
Numeric string
}
//ISO3166List based on https://www.iso.org/obp/ui/#search/code/ Code Type "Officially Assigned Codes"
var ISO3166List = []ISO3166Entry{
{"Afghanistan", "Afghanistan (l')", "AF", "AFG", "004"},
{"Albania", "Albanie (l')", "AL", "ALB", "008"},
{"Antarctica", "Antarctique (l')", "AQ", "ATA", "010"},
{"Algeria", "Algérie (l')", "DZ", "DZA", "012"},
{"American Samoa", "Samoa américaines (les)", "AS", "ASM", "016"},
{"Andorra", "Andorre (l')", "AD", "AND", "020"},
{"Angola", "Angola (l')", "AO", "AGO", "024"},
{"Antigua and Barbuda", "Antigua-et-Barbuda", "AG", "ATG", "028"},
{"Azerbaijan", "AzerbaĂŻdjan (l')", "AZ", "AZE", "031"},
{"Argentina", "Argentine (l')", "AR", "ARG", "032"},
{"Australia", "Australie (l')", "AU", "AUS", "036"},
{"Austria", "Autriche (l')", "AT", "AUT", "040"},
{"Bahamas (the)", "Bahamas (les)", "BS", "BHS", "044"},
{"Bahrain", "BahreĂŻn", "BH", "BHR", "048"},
{"Bangladesh", "Bangladesh (le)", "BD", "BGD", "050"},
{"Armenia", "Arménie (l')", "AM", "ARM", "051"},
{"Barbados", "Barbade (la)", "BB", "BRB", "052"},
{"Belgium", "Belgique (la)", "BE", "BEL", "056"},
{"Bermuda", "Bermudes (les)", "BM", "BMU", "060"},
{"Bhutan", "Bhoutan (le)", "BT", "BTN", "064"},
{"Bolivia (Plurinational State of)", "Bolivie (État plurinational de)", "BO", "BOL", "068"},
{"Bosnia and Herzegovina", "Bosnie-Herzégovine (la)", "BA", "BIH", "070"},
{"Botswana", "Botswana (le)", "BW", "BWA", "072"},
{"Bouvet Island", "Bouvet (l'ĂŽle)", "BV", "BVT", "074"},
{"Brazil", "Brésil (le)", "BR", "BRA", "076"},
{"Belize", "Belize (le)", "BZ", "BLZ", "084"},
{"British Indian Ocean Territory (the)", "Indien (le Territoire britannique de l'océan)", "IO", "IOT", "086"},
{"Solomon Islands", "Salomon (ĂŽles)", "SB", "SLB", "090"},
{"Virgin Islands (British)", "Vierges britanniques (les ĂŽles)", "VG", "VGB", "092"},
{"Brunei Darussalam", "Brunéi Darussalam (le)", "BN", "BRN", "096"},
{"Bulgaria", "Bulgarie (la)", "BG", "BGR", "100"},
{"Myanmar", "Myanmar (le)", "MM", "MMR", "104"},
{"Burundi", "Burundi (le)", "BI", "BDI", "108"},
{"Belarus", "BĂ©larus (le)", "BY", "BLR", "112"},
{"Cambodia", "Cambodge (le)", "KH", "KHM", "116"},
{"Cameroon", "Cameroun (le)", "CM", "CMR", "120"},
{"Canada", "Canada (le)", "CA", "CAN", "124"},
{"Cabo Verde", "Cabo Verde", "CV", "CPV", "132"},
{"Cayman Islands (the)", "CaĂŻmans (les ĂŽles)", "KY", "CYM", "136"},
{"Central African Republic (the)", "RĂ©publique centrafricaine (la)", "CF", "CAF", "140"},
{"Sri Lanka", "Sri Lanka", "LK", "LKA", "144"},
{"Chad", "Tchad (le)", "TD", "TCD", "148"},
{"Chile", "Chili (le)", "CL", "CHL", "152"},
{"China", "Chine (la)", "CN", "CHN", "156"},
{"Taiwan (Province of China)", "TaĂŻwan (Province de Chine)", "TW", "TWN", "158"},
{"Christmas Island", "Christmas (l'ĂŽle)", "CX", "CXR", "162"},
{"Cocos (Keeling) Islands (the)", "Cocos (les ĂŽles)/ Keeling (les ĂŽles)", "CC", "CCK", "166"},
{"Colombia", "Colombie (la)", "CO", "COL", "170"},
{"Comoros (the)", "Comores (les)", "KM", "COM", "174"},
{"Mayotte", "Mayotte", "YT", "MYT", "175"},
{"Congo (the)", "Congo (le)", "CG", "COG", "178"},
{"Congo (the Democratic Republic of the)", "Congo (la République démocratique du)", "CD", "COD", "180"},
{"Cook Islands (the)", "Cook (les ĂŽles)", "CK", "COK", "184"},
{"Costa Rica", "Costa Rica (le)", "CR", "CRI", "188"},
{"Croatia", "Croatie (la)", "HR", "HRV", "191"},
{"Cuba", "Cuba", "CU", "CUB", "192"},
{"Cyprus", "Chypre", "CY", "CYP", "196"},
{"Czech Republic (the)", "tchèque (la République)", "CZ", "CZE", "203"},
{"Benin", "BĂ©nin (le)", "BJ", "BEN", "204"},
{"Denmark", "Danemark (le)", "DK", "DNK", "208"},
{"Dominica", "Dominique (la)", "DM", "DMA", "212"},
{"Dominican Republic (the)", "dominicaine (la RĂ©publique)", "DO", "DOM", "214"},
{"Ecuador", "Équateur (l')", "EC", "ECU", "218"},
{"El Salvador", "El Salvador", "SV", "SLV", "222"},
{"Equatorial Guinea", "Guinée équatoriale (la)", "GQ", "GNQ", "226"},
{"Ethiopia", "Éthiopie (l')", "ET", "ETH", "231"},
{"Eritrea", "Érythrée (l')", "ER", "ERI", "232"},
{"Estonia", "Estonie (l')", "EE", "EST", "233"},
{"Faroe Islands (the)", "Féroé (les Îles)", "FO", "FRO", "234"},
{"Falkland Islands (the) [Malvinas]", "Falkland (les ĂŽles)/Malouines (les ĂŽles)", "FK", "FLK", "238"},
{"South Georgia and the South Sandwich Islands", "GĂ©orgie du Sud-et-les ĂŽles Sandwich du Sud (la)", "GS", "SGS", "239"},
{"Fiji", "Fidji (les)", "FJ", "FJI", "242"},
{"Finland", "Finlande (la)", "FI", "FIN", "246"},
{"Ă…land Islands", "Ă…land(les ĂŽles)", "AX", "ALA", "248"},
{"France", "France (la)", "FR", "FRA", "250"},
{"French Guiana", "Guyane française (la )", "GF", "GUF", "254"},
{"French Polynesia", "Polynésie française (la)", "PF", "PYF", "258"},
{"French Southern Territories (the)", "Terres australes françaises (les)", "TF", "ATF", "260"},
{"Djibouti", "Djibouti", "DJ", "DJI", "262"},
{"Gabon", "Gabon (le)", "GA", "GAB", "266"},
{"Georgia", "GĂ©orgie (la)", "GE", "GEO", "268"},
{"Gambia (the)", "Gambie (la)", "GM", "GMB", "270"},
{"Palestine, State of", "Palestine, État de", "PS", "PSE", "275"},
{"Germany", "Allemagne (l')", "DE", "DEU", "276"},
{"Ghana", "Ghana (le)", "GH", "GHA", "288"},
{"Gibraltar", "Gibraltar", "GI", "GIB", "292"},
{"Kiribati", "Kiribati", "KI", "KIR", "296"},
{"Greece", "Grèce (la)", "GR", "GRC", "300"},
{"Greenland", "Groenland (le)", "GL", "GRL", "304"},
{"Grenada", "Grenade (la)", "GD", "GRD", "308"},
{"Guadeloupe", "Guadeloupe (la)", "GP", "GLP", "312"},
{"Guam", "Guam", "GU", "GUM", "316"},
{"Guatemala", "Guatemala (le)", "GT", "GTM", "320"},
{"Guinea", "Guinée (la)", "GN", "GIN", "324"},
{"Guyana", "Guyana (le)", "GY", "GUY", "328"},
{"Haiti", "HaĂŻti", "HT", "HTI", "332"},
{"Heard Island and McDonald Islands", "Heard-et-ĂŽles MacDonald (l'ĂŽle)", "HM", "HMD", "334"},
{"Holy See (the)", "Saint-Siège (le)", "VA", "VAT", "336"},
{"Honduras", "Honduras (le)", "HN", "HND", "340"},
{"Hong Kong", "Hong Kong", "HK", "HKG", "344"},
{"Hungary", "Hongrie (la)", "HU", "HUN", "348"},
{"Iceland", "Islande (l')", "IS", "ISL", "352"},
{"India", "Inde (l')", "IN", "IND", "356"},
{"Indonesia", "Indonésie (l')", "ID", "IDN", "360"},
{"Iran (Islamic Republic of)", "Iran (RĂ©publique Islamique d')", "IR", "IRN", "364"},
{"Iraq", "Iraq (l')", "IQ", "IRQ", "368"},
{"Ireland", "Irlande (l')", "IE", "IRL", "372"},
{"Israel", "Israël", "IL", "ISR", "376"},
{"Italy", "Italie (l')", "IT", "ITA", "380"},
{"CĂ´te d'Ivoire", "CĂ´te d'Ivoire (la)", "CI", "CIV", "384"},
{"Jamaica", "JamaĂŻque (la)", "JM", "JAM", "388"},
{"Japan", "Japon (le)", "JP", "JPN", "392"},
{"Kazakhstan", "Kazakhstan (le)", "KZ", "KAZ", "398"},
{"Jordan", "Jordanie (la)", "JO", "JOR", "400"},
{"Kenya", "Kenya (le)", "KE", "KEN", "404"},
{"Korea (the Democratic People's Republic of)", "Corée (la République populaire démocratique de)", "KP", "PRK", "408"},
{"Korea (the Republic of)", "Corée (la République de)", "KR", "KOR", "410"},
{"Kuwait", "KoweĂŻt (le)", "KW", "KWT", "414"},
{"Kyrgyzstan", "Kirghizistan (le)", "KG", "KGZ", "417"},
{"Lao People's Democratic Republic (the)", "Lao, République démocratique populaire", "LA", "LAO", "418"},
{"Lebanon", "Liban (le)", "LB", "LBN", "422"},
{"Lesotho", "Lesotho (le)", "LS", "LSO", "426"},
{"Latvia", "Lettonie (la)", "LV", "LVA", "428"},
{"Liberia", "Libéria (le)", "LR", "LBR", "430"},
{"Libya", "Libye (la)", "LY", "LBY", "434"},
{"Liechtenstein", "Liechtenstein (le)", "LI", "LIE", "438"},
{"Lithuania", "Lituanie (la)", "LT", "LTU", "440"},
{"Luxembourg", "Luxembourg (le)", "LU", "LUX", "442"},
{"Macao", "Macao", "MO", "MAC", "446"},
{"Madagascar", "Madagascar", "MG", "MDG", "450"},
{"Malawi", "Malawi (le)", "MW", "MWI", "454"},
{"Malaysia", "Malaisie (la)", "MY", "MYS", "458"},
{"Maldives", "Maldives (les)", "MV", "MDV", "462"},
{"Mali", "Mali (le)", "ML", "MLI", "466"},
{"Malta", "Malte", "MT", "MLT", "470"},
{"Martinique", "Martinique (la)", "MQ", "MTQ", "474"},
{"Mauritania", "Mauritanie (la)", "MR", "MRT", "478"},
{"Mauritius", "Maurice", "MU", "MUS", "480"},
{"Mexico", "Mexique (le)", "MX", "MEX", "484"},
{"Monaco", "Monaco", "MC", "MCO", "492"},
{"Mongolia", "Mongolie (la)", "MN", "MNG", "496"},
{"Moldova (the Republic of)", "Moldova , RĂ©publique de", "MD", "MDA", "498"},
{"Montenegro", "Monténégro (le)", "ME", "MNE", "499"},
{"Montserrat", "Montserrat", "MS", "MSR", "500"},
{"Morocco", "Maroc (le)", "MA", "MAR", "504"},
{"Mozambique", "Mozambique (le)", "MZ", "MOZ", "508"},
{"Oman", "Oman", "OM", "OMN", "512"},
{"Namibia", "Namibie (la)", "NA", "NAM", "516"},
{"Nauru", "Nauru", "NR", "NRU", "520"},
{"Nepal", "NĂ©pal (le)", "NP", "NPL", "524"},
{"Netherlands (the)", "Pays-Bas (les)", "NL", "NLD", "528"},
{"Curaçao", "Curaçao", "CW", "CUW", "531"},
{"Aruba", "Aruba", "AW", "ABW", "533"},
{"Sint Maarten (Dutch part)", "Saint-Martin (partie néerlandaise)", "SX", "SXM", "534"},
{"Bonaire, Sint Eustatius and Saba", "Bonaire, Saint-Eustache et Saba", "BQ", "BES", "535"},
{"New Caledonia", "Nouvelle-Calédonie (la)", "NC", "NCL", "540"},
{"Vanuatu", "Vanuatu (le)", "VU", "VUT", "548"},
{"New Zealand", "Nouvelle-ZĂ©lande (la)", "NZ", "NZL", "554"},
{"Nicaragua", "Nicaragua (le)", "NI", "NIC", "558"},
{"Niger (the)", "Niger (le)", "NE", "NER", "562"},
{"Nigeria", "Nigéria (le)", "NG", "NGA", "566"},
{"Niue", "Niue", "NU", "NIU", "570"},
{"Norfolk Island", "Norfolk (l'ĂŽle)", "NF", "NFK", "574"},
{"Norway", "Norvège (la)", "NO", "NOR", "578"},
{"Northern Mariana Islands (the)", "Mariannes du Nord (les ĂŽles)", "MP", "MNP", "580"},
{"United States Minor Outlying Islands (the)", "Îles mineures éloignées des États-Unis (les)", "UM", "UMI", "581"},
{"Micronesia (Federated States of)", "Micronésie (États fédérés de)", "FM", "FSM", "583"},
{"Marshall Islands (the)", "Marshall (ĂŽles)", "MH", "MHL", "584"},
{"Palau", "Palaos (les)", "PW", "PLW", "585"},
{"Pakistan", "Pakistan (le)", "PK", "PAK", "586"},
{"Panama", "Panama (le)", "PA", "PAN", "591"},
{"Papua New Guinea", "Papouasie-Nouvelle-Guinée (la)", "PG", "PNG", "598"},
{"Paraguay", "Paraguay (le)", "PY", "PRY", "600"},
{"Peru", "PĂ©rou (le)", "PE", "PER", "604"},
{"Philippines (the)", "Philippines (les)", "PH", "PHL", "608"},
{"Pitcairn", "Pitcairn", "PN", "PCN", "612"},
{"Poland", "Pologne (la)", "PL", "POL", "616"},
{"Portugal", "Portugal (le)", "PT", "PRT", "620"},
{"Guinea-Bissau", "Guinée-Bissau (la)", "GW", "GNB", "624"},
{"Timor-Leste", "Timor-Leste (le)", "TL", "TLS", "626"},
{"Puerto Rico", "Porto Rico", "PR", "PRI", "630"},
{"Qatar", "Qatar (le)", "QA", "QAT", "634"},
{"RĂ©union", "RĂ©union (La)", "RE", "REU", "638"},
{"Romania", "Roumanie (la)", "RO", "ROU", "642"},
{"Russian Federation (the)", "Russie (la Fédération de)", "RU", "RUS", "643"},
{"Rwanda", "Rwanda (le)", "RW", "RWA", "646"},
{"Saint Barthélemy", "Saint-Barthélemy", "BL", "BLM", "652"},
{"Saint Helena, Ascension and Tristan da Cunha", "Sainte-Hélène, Ascension et Tristan da Cunha", "SH", "SHN", "654"},
{"Saint Kitts and Nevis", "Saint-Kitts-et-Nevis", "KN", "KNA", "659"},
{"Anguilla", "Anguilla", "AI", "AIA", "660"},
{"Saint Lucia", "Sainte-Lucie", "LC", "LCA", "662"},
{"Saint Martin (French part)", "Saint-Martin (partie française)", "MF", "MAF", "663"},
{"Saint Pierre and Miquelon", "Saint-Pierre-et-Miquelon", "PM", "SPM", "666"},
{"Saint Vincent and the Grenadines", "Saint-Vincent-et-les Grenadines", "VC", "VCT", "670"},
{"San Marino", "Saint-Marin", "SM", "SMR", "674"},
{"Sao Tome and Principe", "Sao Tomé-et-Principe", "ST", "STP", "678"},
{"Saudi Arabia", "Arabie saoudite (l')", "SA", "SAU", "682"},
{"Senegal", "Sénégal (le)", "SN", "SEN", "686"},
{"Serbia", "Serbie (la)", "RS", "SRB", "688"},
{"Seychelles", "Seychelles (les)", "SC", "SYC", "690"},
{"Sierra Leone", "Sierra Leone (la)", "SL", "SLE", "694"},
{"Singapore", "Singapour", "SG", "SGP", "702"},
{"Slovakia", "Slovaquie (la)", "SK", "SVK", "703"},
{"Viet Nam", "Viet Nam (le)", "VN", "VNM", "704"},
{"Slovenia", "Slovénie (la)", "SI", "SVN", "705"},
{"Somalia", "Somalie (la)", "SO", "SOM", "706"},
{"South Africa", "Afrique du Sud (l')", "ZA", "ZAF", "710"},
{"Zimbabwe", "Zimbabwe (le)", "ZW", "ZWE", "716"},
{"Spain", "Espagne (l')", "ES", "ESP", "724"},
{"South Sudan", "Soudan du Sud (le)", "SS", "SSD", "728"},
{"Sudan (the)", "Soudan (le)", "SD", "SDN", "729"},
{"Western Sahara*", "Sahara occidental (le)*", "EH", "ESH", "732"},
{"Suriname", "Suriname (le)", "SR", "SUR", "740"},
{"Svalbard and Jan Mayen", "Svalbard et l'ĂŽle Jan Mayen (le)", "SJ", "SJM", "744"},
{"Swaziland", "Swaziland (le)", "SZ", "SWZ", "748"},
{"Sweden", "Suède (la)", "SE", "SWE", "752"},
{"Switzerland", "Suisse (la)", "CH", "CHE", "756"},
{"Syrian Arab Republic", "RĂ©publique arabe syrienne (la)", "SY", "SYR", "760"},
{"Tajikistan", "Tadjikistan (le)", "TJ", "TJK", "762"},
{"Thailand", "ThaĂŻlande (la)", "TH", "THA", "764"},
{"Togo", "Togo (le)", "TG", "TGO", "768"},
{"Tokelau", "Tokelau (les)", "TK", "TKL", "772"},
{"Tonga", "Tonga (les)", "TO", "TON", "776"},
{"Trinidad and Tobago", "Trinité-et-Tobago (la)", "TT", "TTO", "780"},
{"United Arab Emirates (the)", "Émirats arabes unis (les)", "AE", "ARE", "784"},
{"Tunisia", "Tunisie (la)", "TN", "TUN", "788"},
{"Turkey", "Turquie (la)", "TR", "TUR", "792"},
{"Turkmenistan", "Turkménistan (le)", "TM", "TKM", "795"},
{"Turks and Caicos Islands (the)", "Turks-et-CaĂŻcos (les ĂŽles)", "TC", "TCA", "796"},
{"Tuvalu", "Tuvalu (les)", "TV", "TUV", "798"},
{"Uganda", "Ouganda (l')", "UG", "UGA", "800"},
{"Ukraine", "Ukraine (l')", "UA", "UKR", "804"},
{"Macedonia (the former Yugoslav Republic of)", "Macédoine (l'ex‑République yougoslave de)", "MK", "MKD", "807"},
{"Egypt", "Égypte (l')", "EG", "EGY", "818"},
{"United Kingdom of Great Britain and Northern Ireland (the)", "Royaume-Uni de Grande-Bretagne et d'Irlande du Nord (le)", "GB", "GBR", "826"},
{"Guernsey", "Guernesey", "GG", "GGY", "831"},
{"Jersey", "Jersey", "JE", "JEY", "832"},
{"Isle of Man", "ĂŽle de Man", "IM", "IMN", "833"},
{"Tanzania, United Republic of", "Tanzanie, RĂ©publique-Unie de", "TZ", "TZA", "834"},
{"United States of America (the)", "États-Unis d'Amérique (les)", "US", "USA", "840"},
{"Virgin Islands (U.S.)", "Vierges des États-Unis (les Îles)", "VI", "VIR", "850"},
{"Burkina Faso", "Burkina Faso (le)", "BF", "BFA", "854"},
{"Uruguay", "Uruguay (l')", "UY", "URY", "858"},
{"Uzbekistan", "Ouzbékistan (l')", "UZ", "UZB", "860"},
{"Venezuela (Bolivarian Republic of)", "Venezuela (RĂ©publique bolivarienne du)", "VE", "VEN", "862"},
{"Wallis and Futuna", "Wallis-et-Futuna", "WF", "WLF", "876"},
{"Samoa", "Samoa (le)", "WS", "WSM", "882"},
{"Yemen", "YĂ©men (le)", "YE", "YEM", "887"},
{"Zambia", "Zambie (la)", "ZM", "ZMB", "894"},
}
// ISO4217List is the list of ISO currency codes
var ISO4217List = []string{
"AED", "AFN", "ALL", "AMD", "ANG", "AOA", "ARS", "AUD", "AWG", "AZN",
"BAM", "BBD", "BDT", "BGN", "BHD", "BIF", "BMD", "BND", "BOB", "BOV", "BRL", "BSD", "BTN", "BWP", "BYN", "BZD",
"CAD", "CDF", "CHE", "CHF", "CHW", "CLF", "CLP", "CNY", "COP", "COU", "CRC", "CUC", "CUP", "CVE", "CZK",
"DJF", "DKK", "DOP", "DZD",
"EGP", "ERN", "ETB", "EUR",
"FJD", "FKP",
"GBP", "GEL", "GHS", "GIP", "GMD", "GNF", "GTQ", "GYD",
"HKD", "HNL", "HRK", "HTG", "HUF",
"IDR", "ILS", "INR", "IQD", "IRR", "ISK",
"JMD", "JOD", "JPY",
"KES", "KGS", "KHR", "KMF", "KPW", "KRW", "KWD", "KYD", "KZT",
"LAK", "LBP", "LKR", "LRD", "LSL", "LYD",
"MAD", "MDL", "MGA", "MKD", "MMK", "MNT", "MOP", "MRO", "MUR", "MVR", "MWK", "MXN", "MXV", "MYR", "MZN",
"NAD", "NGN", "NIO", "NOK", "NPR", "NZD",
"OMR",
"PAB", "PEN", "PGK", "PHP", "PKR", "PLN", "PYG",
"QAR",
"RON", "RSD", "RUB", "RWF",
"SAR", "SBD", "SCR", "SDG", "SEK", "SGD", "SHP", "SLL", "SOS", "SRD", "SSP", "STD", "STN", "SVC", "SYP", "SZL",
"THB", "TJS", "TMT", "TND", "TOP", "TRY", "TTD", "TWD", "TZS",
"UAH", "UGX", "USD", "USN", "UYI", "UYU", "UYW", "UZS",
"VEF", "VES", "VND", "VUV",
"WST",
"XAF", "XAG", "XAU", "XBA", "XBB", "XBC", "XBD", "XCD", "XDR", "XOF", "XPD", "XPF", "XPT", "XSU", "XTS", "XUA", "XXX",
"YER",
"ZAR", "ZMW", "ZWL",
}
// ISO693Entry stores ISO language codes
type ISO693Entry struct {
Alpha3bCode string
Alpha2Code string
English string
}
//ISO693List based on http://data.okfn.org/data/core/language-codes/r/language-codes-3b2.json
var ISO693List = []ISO693Entry{
{Alpha3bCode: "aar", Alpha2Code: "aa", English: "Afar"},
{Alpha3bCode: "abk", Alpha2Code: "ab", English: "Abkhazian"},
{Alpha3bCode: "afr", Alpha2Code: "af", English: "Afrikaans"},
{Alpha3bCode: "aka", Alpha2Code: "ak", English: "Akan"},
{Alpha3bCode: "alb", Alpha2Code: "sq", English: "Albanian"},
{Alpha3bCode: "amh", Alpha2Code: "am", English: "Amharic"},
{Alpha3bCode: "ara", Alpha2Code: "ar", English: "Arabic"},
{Alpha3bCode: "arg", Alpha2Code: "an", English: "Aragonese"},
{Alpha3bCode: "arm", Alpha2Code: "hy", English: "Armenian"},
{Alpha3bCode: "asm", Alpha2Code: "as", English: "Assamese"},
{Alpha3bCode: "ava", Alpha2Code: "av", English: "Avaric"},
{Alpha3bCode: "ave", Alpha2Code: "ae", English: "Avestan"},
{Alpha3bCode: "aym", Alpha2Code: "ay", English: "Aymara"},
{Alpha3bCode: "aze", Alpha2Code: "az", English: "Azerbaijani"},
{Alpha3bCode: "bak", Alpha2Code: "ba", English: "Bashkir"},
{Alpha3bCode: "bam", Alpha2Code: "bm", English: "Bambara"},
{Alpha3bCode: "baq", Alpha2Code: "eu", English: "Basque"},
{Alpha3bCode: "bel", Alpha2Code: "be", English: "Belarusian"},
{Alpha3bCode: "ben", Alpha2Code: "bn", English: "Bengali"},
{Alpha3bCode: "bih", Alpha2Code: "bh", English: "Bihari languages"},
{Alpha3bCode: "bis", Alpha2Code: "bi", English: "Bislama"},
{Alpha3bCode: "bos", Alpha2Code: "bs", English: "Bosnian"},
{Alpha3bCode: "bre", Alpha2Code: "br", English: "Breton"},
{Alpha3bCode: "bul", Alpha2Code: "bg", English: "Bulgarian"},
{Alpha3bCode: "bur", Alpha2Code: "my", English: "Burmese"},
{Alpha3bCode: "cat", Alpha2Code: "ca", English: "Catalan; Valencian"},
{Alpha3bCode: "cha", Alpha2Code: "ch", English: "Chamorro"},
{Alpha3bCode: "che", Alpha2Code: "ce", English: "Chechen"},
{Alpha3bCode: "chi", Alpha2Code: "zh", English: "Chinese"},
{Alpha3bCode: "chu", Alpha2Code: "cu", English: "Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic"},
{Alpha3bCode: "chv", Alpha2Code: "cv", English: "Chuvash"},
{Alpha3bCode: "cor", Alpha2Code: "kw", English: "Cornish"},
{Alpha3bCode: "cos", Alpha2Code: "co", English: "Corsican"},
{Alpha3bCode: "cre", Alpha2Code: "cr", English: "Cree"},
{Alpha3bCode: "cze", Alpha2Code: "cs", English: "Czech"},
{Alpha3bCode: "dan", Alpha2Code: "da", English: "Danish"},
{Alpha3bCode: "div", Alpha2Code: "dv", English: "Divehi; Dhivehi; Maldivian"},
{Alpha3bCode: "dut", Alpha2Code: "nl", English: "Dutch; Flemish"},
{Alpha3bCode: "dzo", Alpha2Code: "dz", English: "Dzongkha"},
{Alpha3bCode: "eng", Alpha2Code: "en", English: "English"},
{Alpha3bCode: "epo", Alpha2Code: "eo", English: "Esperanto"},
{Alpha3bCode: "est", Alpha2Code: "et", English: "Estonian"},
{Alpha3bCode: "ewe", Alpha2Code: "ee", English: "Ewe"},
{Alpha3bCode: "fao", Alpha2Code: "fo", English: "Faroese"},
{Alpha3bCode: "fij", Alpha2Code: "fj", English: "Fijian"},
{Alpha3bCode: "fin", Alpha2Code: "fi", English: "Finnish"},
{Alpha3bCode: "fre", Alpha2Code: "fr", English: "French"},
{Alpha3bCode: "fry", Alpha2Code: "fy", English: "Western Frisian"},
{Alpha3bCode: "ful", Alpha2Code: "ff", English: "Fulah"},
{Alpha3bCode: "geo", Alpha2Code: "ka", English: "Georgian"},
{Alpha3bCode: "ger", Alpha2Code: "de", English: "German"},
{Alpha3bCode: "gla", Alpha2Code: "gd", English: "Gaelic; Scottish Gaelic"},
{Alpha3bCode: "gle", Alpha2Code: "ga", English: "Irish"},
{Alpha3bCode: "glg", Alpha2Code: "gl", English: "Galician"},
{Alpha3bCode: "glv", Alpha2Code: "gv", English: "Manx"},
{Alpha3bCode: "gre", Alpha2Code: "el", English: "Greek, Modern (1453-)"},
{Alpha3bCode: "grn", Alpha2Code: "gn", English: "Guarani"},
{Alpha3bCode: "guj", Alpha2Code: "gu", English: "Gujarati"},
{Alpha3bCode: "hat", Alpha2Code: "ht", English: "Haitian; Haitian Creole"},
{Alpha3bCode: "hau", Alpha2Code: "ha", English: "Hausa"},
{Alpha3bCode: "heb", Alpha2Code: "he", English: "Hebrew"},
{Alpha3bCode: "her", Alpha2Code: "hz", English: "Herero"},
{Alpha3bCode: "hin", Alpha2Code: "hi", English: "Hindi"},
{Alpha3bCode: "hmo", Alpha2Code: "ho", English: "Hiri Motu"},
{Alpha3bCode: "hrv", Alpha2Code: "hr", English: "Croatian"},
{Alpha3bCode: "hun", Alpha2Code: "hu", English: "Hungarian"},
{Alpha3bCode: "ibo", Alpha2Code: "ig", English: "Igbo"},
{Alpha3bCode: "ice", Alpha2Code: "is", English: "Icelandic"},
{Alpha3bCode: "ido", Alpha2Code: "io", English: "Ido"},
{Alpha3bCode: "iii", Alpha2Code: "ii", English: "Sichuan Yi; Nuosu"},
{Alpha3bCode: "iku", Alpha2Code: "iu", English: "Inuktitut"},
{Alpha3bCode: "ile", Alpha2Code: "ie", English: "Interlingue; Occidental"},
{Alpha3bCode: "ina", Alpha2Code: "ia", English: "Interlingua (International Auxiliary Language Association)"},
{Alpha3bCode: "ind", Alpha2Code: "id", English: "Indonesian"},
{Alpha3bCode: "ipk", Alpha2Code: "ik", English: "Inupiaq"},
{Alpha3bCode: "ita", Alpha2Code: "it", English: "Italian"},
{Alpha3bCode: "jav", Alpha2Code: "jv", English: "Javanese"},
{Alpha3bCode: "jpn", Alpha2Code: "ja", English: "Japanese"},
{Alpha3bCode: "kal", Alpha2Code: "kl", English: "Kalaallisut; Greenlandic"},
{Alpha3bCode: "kan", Alpha2Code: "kn", English: "Kannada"},
{Alpha3bCode: "kas", Alpha2Code: "ks", English: "Kashmiri"},
{Alpha3bCode: "kau", Alpha2Code: "kr", English: "Kanuri"},
{Alpha3bCode: "kaz", Alpha2Code: "kk", English: "Kazakh"},
{Alpha3bCode: "khm", Alpha2Code: "km", English: "Central Khmer"},
{Alpha3bCode: "kik", Alpha2Code: "ki", English: "Kikuyu; Gikuyu"},
{Alpha3bCode: "kin", Alpha2Code: "rw", English: "Kinyarwanda"},
{Alpha3bCode: "kir", Alpha2Code: "ky", English: "Kirghiz; Kyrgyz"},
{Alpha3bCode: "kom", Alpha2Code: "kv", English: "Komi"},
{Alpha3bCode: "kon", Alpha2Code: "kg", English: "Kongo"},
{Alpha3bCode: "kor", Alpha2Code: "ko", English: "Korean"},
{Alpha3bCode: "kua", Alpha2Code: "kj", English: "Kuanyama; Kwanyama"},
{Alpha3bCode: "kur", Alpha2Code: "ku", English: "Kurdish"},
{Alpha3bCode: "lao", Alpha2Code: "lo", English: "Lao"},
{Alpha3bCode: "lat", Alpha2Code: "la", English: "Latin"},
{Alpha3bCode: "lav", Alpha2Code: "lv", English: "Latvian"},
{Alpha3bCode: "lim", Alpha2Code: "li", English: "Limburgan; Limburger; Limburgish"},
{Alpha3bCode: "lin", Alpha2Code: "ln", English: "Lingala"},
{Alpha3bCode: "lit", Alpha2Code: "lt", English: "Lithuanian"},
{Alpha3bCode: "ltz", Alpha2Code: "lb", English: "Luxembourgish; Letzeburgesch"},
{Alpha3bCode: "lub", Alpha2Code: "lu", English: "Luba-Katanga"},
{Alpha3bCode: "lug", Alpha2Code: "lg", English: "Ganda"},
{Alpha3bCode: "mac", Alpha2Code: "mk", English: "Macedonian"},
{Alpha3bCode: "mah", Alpha2Code: "mh", English: "Marshallese"},
{Alpha3bCode: "mal", Alpha2Code: "ml", English: "Malayalam"},
{Alpha3bCode: "mao", Alpha2Code: "mi", English: "Maori"},
{Alpha3bCode: "mar", Alpha2Code: "mr", English: "Marathi"},
{Alpha3bCode: "may", Alpha2Code: "ms", English: "Malay"},
{Alpha3bCode: "mlg", Alpha2Code: "mg", English: "Malagasy"},
{Alpha3bCode: "mlt", Alpha2Code: "mt", English: "Maltese"},
{Alpha3bCode: "mon", Alpha2Code: "mn", English: "Mongolian"},
{Alpha3bCode: "nau", Alpha2Code: "na", English: "Nauru"},
{Alpha3bCode: "nav", Alpha2Code: "nv", English: "Navajo; Navaho"},
{Alpha3bCode: "nbl", Alpha2Code: "nr", English: "Ndebele, South; South Ndebele"},
{Alpha3bCode: "nde", Alpha2Code: "nd", English: "Ndebele, North; North Ndebele"},
{Alpha3bCode: "ndo", Alpha2Code: "ng", English: "Ndonga"},
{Alpha3bCode: "nep", Alpha2Code: "ne", English: "Nepali"},
{Alpha3bCode: "nno", Alpha2Code: "nn", English: "Norwegian Nynorsk; Nynorsk, Norwegian"},
{Alpha3bCode: "nob", Alpha2Code: "nb", English: "BokmĂĄl, Norwegian; Norwegian BokmĂĄl"},
{Alpha3bCode: "nor", Alpha2Code: "no", English: "Norwegian"},
{Alpha3bCode: "nya", Alpha2Code: "ny", English: "Chichewa; Chewa; Nyanja"},
{Alpha3bCode: "oci", Alpha2Code: "oc", English: "Occitan (post 1500); Provençal"},
{Alpha3bCode: "oji", Alpha2Code: "oj", English: "Ojibwa"},
{Alpha3bCode: "ori", Alpha2Code: "or", English: "Oriya"},
{Alpha3bCode: "orm", Alpha2Code: "om", English: "Oromo"},
{Alpha3bCode: "oss", Alpha2Code: "os", English: "Ossetian; Ossetic"},
{Alpha3bCode: "pan", Alpha2Code: "pa", English: "Panjabi; Punjabi"},
{Alpha3bCode: "per", Alpha2Code: "fa", English: "Persian"},
{Alpha3bCode: "pli", Alpha2Code: "pi", English: "Pali"},
{Alpha3bCode: "pol", Alpha2Code: "pl", English: "Polish"},
{Alpha3bCode: "por", Alpha2Code: "pt", English: "Portuguese"},
{Alpha3bCode: "pus", Alpha2Code: "ps", English: "Pushto; Pashto"},
{Alpha3bCode: "que", Alpha2Code: "qu", English: "Quechua"},
{Alpha3bCode: "roh", Alpha2Code: "rm", English: "Romansh"},
{Alpha3bCode: "rum", Alpha2Code: "ro", English: "Romanian; Moldavian; Moldovan"},
{Alpha3bCode: "run", Alpha2Code: "rn", English: "Rundi"},
{Alpha3bCode: "rus", Alpha2Code: "ru", English: "Russian"},
{Alpha3bCode: "sag", Alpha2Code: "sg", English: "Sango"},
{Alpha3bCode: "san", Alpha2Code: "sa", English: "Sanskrit"},
{Alpha3bCode: "sin", Alpha2Code: "si", English: "Sinhala; Sinhalese"},
{Alpha3bCode: "slo", Alpha2Code: "sk", English: "Slovak"},
{Alpha3bCode: "slv", Alpha2Code: "sl", English: "Slovenian"},
{Alpha3bCode: "sme", Alpha2Code: "se", English: "Northern Sami"},
{Alpha3bCode: "smo", Alpha2Code: "sm", English: "Samoan"},
{Alpha3bCode: "sna", Alpha2Code: "sn", English: "Shona"},
{Alpha3bCode: "snd", Alpha2Code: "sd", English: "Sindhi"},
{Alpha3bCode: "som", Alpha2Code: "so", English: "Somali"},
{Alpha3bCode: "sot", Alpha2Code: "st", English: "Sotho, Southern"},
{Alpha3bCode: "spa", Alpha2Code: "es", English: "Spanish; Castilian"},
{Alpha3bCode: "srd", Alpha2Code: "sc", English: "Sardinian"},
{Alpha3bCode: "srp", Alpha2Code: "sr", English: "Serbian"},
{Alpha3bCode: "ssw", Alpha2Code: "ss", English: "Swati"},
{Alpha3bCode: "sun", Alpha2Code: "su", English: "Sundanese"},
{Alpha3bCode: "swa", Alpha2Code: "sw", English: "Swahili"},
{Alpha3bCode: "swe", Alpha2Code: "sv", English: "Swedish"},
{Alpha3bCode: "tah", Alpha2Code: "ty", English: "Tahitian"},
{Alpha3bCode: "tam", Alpha2Code: "ta", English: "Tamil"},
{Alpha3bCode: "tat", Alpha2Code: "tt", English: "Tatar"},
{Alpha3bCode: "tel", Alpha2Code: "te", English: "Telugu"},
{Alpha3bCode: "tgk", Alpha2Code: "tg", English: "Tajik"},
{Alpha3bCode: "tgl", Alpha2Code: "tl", English: "Tagalog"},
{Alpha3bCode: "tha", Alpha2Code: "th", English: "Thai"},
{Alpha3bCode: "tib", Alpha2Code: "bo", English: "Tibetan"},
{Alpha3bCode: "tir", Alpha2Code: "ti", English: "Tigrinya"},
{Alpha3bCode: "ton", Alpha2Code: "to", English: "Tonga (Tonga Islands)"},
{Alpha3bCode: "tsn", Alpha2Code: "tn", English: "Tswana"},
{Alpha3bCode: "tso", Alpha2Code: "ts", English: "Tsonga"},
{Alpha3bCode: "tuk", Alpha2Code: "tk", English: "Turkmen"},
{Alpha3bCode: "tur", Alpha2Code: "tr", English: "Turkish"},
{Alpha3bCode: "twi", Alpha2Code: "tw", English: "Twi"},
{Alpha3bCode: "uig", Alpha2Code: "ug", English: "Uighur; Uyghur"},
{Alpha3bCode: "ukr", Alpha2Code: "uk", English: "Ukrainian"},
{Alpha3bCode: "urd", Alpha2Code: "ur", English: "Urdu"},
{Alpha3bCode: "uzb", Alpha2Code: "uz", English: "Uzbek"},
{Alpha3bCode: "ven", Alpha2Code: "ve", English: "Venda"},
{Alpha3bCode: "vie", Alpha2Code: "vi", English: "Vietnamese"},
{Alpha3bCode: "vol", Alpha2Code: "vo", English: "VolapĂĽk"},
{Alpha3bCode: "wel", Alpha2Code: "cy", English: "Welsh"},
{Alpha3bCode: "wln", Alpha2Code: "wa", English: "Walloon"},
{Alpha3bCode: "wol", Alpha2Code: "wo", English: "Wolof"},
{Alpha3bCode: "xho", Alpha2Code: "xh", English: "Xhosa"},
{Alpha3bCode: "yid", Alpha2Code: "yi", English: "Yiddish"},
{Alpha3bCode: "yor", Alpha2Code: "yo", English: "Yoruba"},
{Alpha3bCode: "zha", Alpha2Code: "za", English: "Zhuang; Chuang"},
{Alpha3bCode: "zul", Alpha2Code: "zu", English: "Zulu"},
}

@ -0,0 +1,270 @@
package govalidator
import (
"errors"
"fmt"
"html"
"math"
"path"
"regexp"
"strings"
"unicode"
"unicode/utf8"
)
// Contains checks if the string contains the substring.
func Contains(str, substring string) bool {
return strings.Contains(str, substring)
}
// Matches checks if string matches the pattern (pattern is regular expression)
// In case of error return false
func Matches(str, pattern string) bool {
match, _ := regexp.MatchString(pattern, str)
return match
}
// LeftTrim trims characters from the left side of the input.
// If second argument is empty, it will remove leading spaces.
func LeftTrim(str, chars string) string {
if chars == "" {
return strings.TrimLeftFunc(str, unicode.IsSpace)
}
r, _ := regexp.Compile("^[" + chars + "]+")
return r.ReplaceAllString(str, "")
}
// RightTrim trims characters from the right side of the input.
// If second argument is empty, it will remove trailing spaces.
func RightTrim(str, chars string) string {
if chars == "" {
return strings.TrimRightFunc(str, unicode.IsSpace)
}
r, _ := regexp.Compile("[" + chars + "]+$")
return r.ReplaceAllString(str, "")
}
// Trim trims characters from both sides of the input.
// If second argument is empty, it will remove spaces.
func Trim(str, chars string) string {
return LeftTrim(RightTrim(str, chars), chars)
}
// WhiteList removes characters that do not appear in the whitelist.
func WhiteList(str, chars string) string {
pattern := "[^" + chars + "]+"
r, _ := regexp.Compile(pattern)
return r.ReplaceAllString(str, "")
}
// BlackList removes characters that appear in the blacklist.
func BlackList(str, chars string) string {
pattern := "[" + chars + "]+"
r, _ := regexp.Compile(pattern)
return r.ReplaceAllString(str, "")
}
// StripLow removes characters with a numerical value < 32 and 127, mostly control characters.
// If keep_new_lines is true, newline characters are preserved (\n and \r, hex 0xA and 0xD).
func StripLow(str string, keepNewLines bool) string {
chars := ""
if keepNewLines {
chars = "\x00-\x09\x0B\x0C\x0E-\x1F\x7F"
} else {
chars = "\x00-\x1F\x7F"
}
return BlackList(str, chars)
}
// ReplacePattern replaces regular expression pattern in string
func ReplacePattern(str, pattern, replace string) string {
r, _ := regexp.Compile(pattern)
return r.ReplaceAllString(str, replace)
}
// Escape replaces <, >, & and " with HTML entities.
var Escape = html.EscapeString
func addSegment(inrune, segment []rune) []rune {
if len(segment) == 0 {
return inrune
}
if len(inrune) != 0 {
inrune = append(inrune, '_')
}
inrune = append(inrune, segment...)
return inrune
}
// UnderscoreToCamelCase converts from underscore separated form to camel case form.
// Ex.: my_func => MyFunc
func UnderscoreToCamelCase(s string) string {
return strings.Replace(strings.Title(strings.Replace(strings.ToLower(s), "_", " ", -1)), " ", "", -1)
}
// CamelCaseToUnderscore converts from camel case form to underscore separated form.
// Ex.: MyFunc => my_func
func CamelCaseToUnderscore(str string) string {
var output []rune
var segment []rune
for _, r := range str {
// not treat number as separate segment
if !unicode.IsLower(r) && string(r) != "_" && !unicode.IsNumber(r) {
output = addSegment(output, segment)
segment = nil
}
segment = append(segment, unicode.ToLower(r))
}
output = addSegment(output, segment)
return string(output)
}
// Reverse returns reversed string
func Reverse(s string) string {
r := []rune(s)
for i, j := 0, len(r)-1; i < j; i, j = i+1, j-1 {
r[i], r[j] = r[j], r[i]
}
return string(r)
}
// GetLines splits string by "\n" and return array of lines
func GetLines(s string) []string {
return strings.Split(s, "\n")
}
// GetLine returns specified line of multiline string
func GetLine(s string, index int) (string, error) {
lines := GetLines(s)
if index < 0 || index >= len(lines) {
return "", errors.New("line index out of bounds")
}
return lines[index], nil
}
// RemoveTags removes all tags from HTML string
func RemoveTags(s string) string {
return ReplacePattern(s, "<[^>]*>", "")
}
// SafeFileName returns safe string that can be used in file names
func SafeFileName(str string) string {
name := strings.ToLower(str)
name = path.Clean(path.Base(name))
name = strings.Trim(name, " ")
separators, err := regexp.Compile(`[ &_=+:]`)
if err == nil {
name = separators.ReplaceAllString(name, "-")
}
legal, err := regexp.Compile(`[^[:alnum:]-.]`)
if err == nil {
name = legal.ReplaceAllString(name, "")
}
for strings.Contains(name, "--") {
name = strings.Replace(name, "--", "-", -1)
}
return name
}
// NormalizeEmail canonicalize an email address.
// The local part of the email address is lowercased for all domains; the hostname is always lowercased and
// the local part of the email address is always lowercased for hosts that are known to be case-insensitive (currently only GMail).
// Normalization follows special rules for known providers: currently, GMail addresses have dots removed in the local part and
// are stripped of tags (e.g. some.one+tag@gmail.com becomes someone@gmail.com) and all @googlemail.com addresses are
// normalized to @gmail.com.
func NormalizeEmail(str string) (string, error) {
if !IsEmail(str) {
return "", fmt.Errorf("%s is not an email", str)
}
parts := strings.Split(str, "@")
parts[0] = strings.ToLower(parts[0])
parts[1] = strings.ToLower(parts[1])
if parts[1] == "gmail.com" || parts[1] == "googlemail.com" {
parts[1] = "gmail.com"
parts[0] = strings.Split(ReplacePattern(parts[0], `\.`, ""), "+")[0]
}
return strings.Join(parts, "@"), nil
}
// Truncate a string to the closest length without breaking words.
func Truncate(str string, length int, ending string) string {
var aftstr, befstr string
if len(str) > length {
words := strings.Fields(str)
before, present := 0, 0
for i := range words {
befstr = aftstr
before = present
aftstr = aftstr + words[i] + " "
present = len(aftstr)
if present > length && i != 0 {
if (length - before) < (present - length) {
return Trim(befstr, " /\\.,\"'#!?&@+-") + ending
}
return Trim(aftstr, " /\\.,\"'#!?&@+-") + ending
}
}
}
return str
}
// PadLeft pads left side of a string if size of string is less then indicated pad length
func PadLeft(str string, padStr string, padLen int) string {
return buildPadStr(str, padStr, padLen, true, false)
}
// PadRight pads right side of a string if size of string is less then indicated pad length
func PadRight(str string, padStr string, padLen int) string {
return buildPadStr(str, padStr, padLen, false, true)
}
// PadBoth pads both sides of a string if size of string is less then indicated pad length
func PadBoth(str string, padStr string, padLen int) string {
return buildPadStr(str, padStr, padLen, true, true)
}
// PadString either left, right or both sides.
// Note that padding string can be unicode and more then one character
func buildPadStr(str string, padStr string, padLen int, padLeft bool, padRight bool) string {
// When padded length is less then the current string size
if padLen < utf8.RuneCountInString(str) {
return str
}
padLen -= utf8.RuneCountInString(str)
targetLen := padLen
targetLenLeft := targetLen
targetLenRight := targetLen
if padLeft && padRight {
targetLenLeft = padLen / 2
targetLenRight = padLen - targetLenLeft
}
strToRepeatLen := utf8.RuneCountInString(padStr)
repeatTimes := int(math.Ceil(float64(targetLen) / float64(strToRepeatLen)))
repeatedString := strings.Repeat(padStr, repeatTimes)
leftSide := ""
if padLeft {
leftSide = repeatedString[0:targetLenLeft]
}
rightSide := ""
if padRight {
rightSide = repeatedString[0:targetLenRight]
}
return leftSide + str + rightSide
}
// TruncatingErrorf removes extra args from fmt.Errorf if not formatted in the str object
func TruncatingErrorf(str string, args ...interface{}) error {
n := strings.Count(str, "%s")
return fmt.Errorf(str, args[:n]...)
}

File diff suppressed because it is too large Load Diff

@ -0,0 +1,15 @@
box: golang
build:
steps:
- setup-go-workspace
- script:
name: go get
code: |
go version
go get -t ./...
- script:
name: go test
code: |
go test -race -v ./...

@ -0,0 +1,37 @@
# Binaries for programs and plugins
*.exe
*.dll
*.so
*.dylib
*.o
*.a
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.prof
# Test binary, build with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out
# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
.glide/
# Gogland
.idea/

@ -0,0 +1,29 @@
language: go
sudo: false
go:
- 1.10.x
- 1.11.x
- 1.12.x
- 1.13.x
- 1.14.x
- 1.15.x
cache:
directories:
- $HOME/.cache/go-build
- $HOME/gopath/pkg/mod
env:
global:
- GO111MODULE=on
before_install:
- go get github.com/mattn/goveralls
- go get golang.org/x/tools/cmd/cover
- go get golang.org/x/tools/cmd/goimports
- go get golang.org/x/lint/golint
script:
- gofiles=$(find ./ -name '*.go') && [ -z "$gofiles" ] || unformatted=$(goimports -l $gofiles) && [ -z "$unformatted" ] || (echo >&2 "Go files must be formatted with gofmt. Following files has problem:\n $unformatted" && false)
- golint ./... # This won't break the build, just show warnings
- $HOME/gopath/bin/goveralls -service=travis-ci

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright (c) 2018-2020, Dmitrij Koniajev (dimchansky@gmail.com)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

@ -0,0 +1,66 @@
# utfbom [![Godoc](https://godoc.org/github.com/dimchansky/utfbom?status.png)](https://godoc.org/github.com/dimchansky/utfbom) [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Build Status](https://travis-ci.org/dimchansky/utfbom.svg?branch=master)](https://travis-ci.org/dimchansky/utfbom) [![Go Report Card](https://goreportcard.com/badge/github.com/dimchansky/utfbom)](https://goreportcard.com/report/github.com/dimchansky/utfbom) [![Coverage Status](https://coveralls.io/repos/github/dimchansky/utfbom/badge.svg?branch=master)](https://coveralls.io/github/dimchansky/utfbom?branch=master)
The package utfbom implements the detection of the BOM (Unicode Byte Order Mark) and removing as necessary. It can also return the encoding detected by the BOM.
## Installation
go get -u github.com/dimchansky/utfbom
## Example
```go
package main
import (
"bytes"
"fmt"
"io/ioutil"
"github.com/dimchansky/utfbom"
)
func main() {
trySkip([]byte("\xEF\xBB\xBFhello"))
trySkip([]byte("hello"))
}
func trySkip(byteData []byte) {
fmt.Println("Input:", byteData)
// just skip BOM
output, err := ioutil.ReadAll(utfbom.SkipOnly(bytes.NewReader(byteData)))
if err != nil {
fmt.Println(err)
return
}
fmt.Println("ReadAll with BOM skipping", output)
// skip BOM and detect encoding
sr, enc := utfbom.Skip(bytes.NewReader(byteData))
fmt.Printf("Detected encoding: %s\n", enc)
output, err = ioutil.ReadAll(sr)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("ReadAll with BOM detection and skipping", output)
fmt.Println()
}
```
Output:
```
$ go run main.go
Input: [239 187 191 104 101 108 108 111]
ReadAll with BOM skipping [104 101 108 108 111]
Detected encoding: UTF8
ReadAll with BOM detection and skipping [104 101 108 108 111]
Input: [104 101 108 108 111]
ReadAll with BOM skipping [104 101 108 108 111]
Detected encoding: Unknown
ReadAll with BOM detection and skipping [104 101 108 108 111]
```

@ -0,0 +1,192 @@
// Package utfbom implements the detection of the BOM (Unicode Byte Order Mark) and removing as necessary.
// It wraps an io.Reader object, creating another object (Reader) that also implements the io.Reader
// interface but provides automatic BOM checking and removing as necessary.
package utfbom
import (
"errors"
"io"
)
// Encoding is type alias for detected UTF encoding.
type Encoding int
// Constants to identify detected UTF encodings.
const (
// Unknown encoding, returned when no BOM was detected
Unknown Encoding = iota
// UTF8, BOM bytes: EF BB BF
UTF8
// UTF-16, big-endian, BOM bytes: FE FF
UTF16BigEndian
// UTF-16, little-endian, BOM bytes: FF FE
UTF16LittleEndian
// UTF-32, big-endian, BOM bytes: 00 00 FE FF
UTF32BigEndian
// UTF-32, little-endian, BOM bytes: FF FE 00 00
UTF32LittleEndian
)
// String returns a user-friendly string representation of the encoding. Satisfies fmt.Stringer interface.
func (e Encoding) String() string {
switch e {
case UTF8:
return "UTF8"
case UTF16BigEndian:
return "UTF16BigEndian"
case UTF16LittleEndian:
return "UTF16LittleEndian"
case UTF32BigEndian:
return "UTF32BigEndian"
case UTF32LittleEndian:
return "UTF32LittleEndian"
default:
return "Unknown"
}
}
const maxConsecutiveEmptyReads = 100
// Skip creates Reader which automatically detects BOM (Unicode Byte Order Mark) and removes it as necessary.
// It also returns the encoding detected by the BOM.
// If the detected encoding is not needed, you can call the SkipOnly function.
func Skip(rd io.Reader) (*Reader, Encoding) {
// Is it already a Reader?
b, ok := rd.(*Reader)
if ok {
return b, Unknown
}
enc, left, err := detectUtf(rd)
return &Reader{
rd: rd,
buf: left,
err: err,
}, enc
}
// SkipOnly creates Reader which automatically detects BOM (Unicode Byte Order Mark) and removes it as necessary.
func SkipOnly(rd io.Reader) *Reader {
r, _ := Skip(rd)
return r
}
// Reader implements automatic BOM (Unicode Byte Order Mark) checking and
// removing as necessary for an io.Reader object.
type Reader struct {
rd io.Reader // reader provided by the client
buf []byte // buffered data
err error // last error
}
// Read is an implementation of io.Reader interface.
// The bytes are taken from the underlying Reader, but it checks for BOMs, removing them as necessary.
func (r *Reader) Read(p []byte) (n int, err error) {
if len(p) == 0 {
return 0, nil
}
if r.buf == nil {
if r.err != nil {
return 0, r.readErr()
}
return r.rd.Read(p)
}
// copy as much as we can
n = copy(p, r.buf)
r.buf = nilIfEmpty(r.buf[n:])
return n, nil
}
func (r *Reader) readErr() error {
err := r.err
r.err = nil
return err
}
var errNegativeRead = errors.New("utfbom: reader returned negative count from Read")
func detectUtf(rd io.Reader) (enc Encoding, buf []byte, err error) {
buf, err = readBOM(rd)
if len(buf) >= 4 {
if isUTF32BigEndianBOM4(buf) {
return UTF32BigEndian, nilIfEmpty(buf[4:]), err
}
if isUTF32LittleEndianBOM4(buf) {
return UTF32LittleEndian, nilIfEmpty(buf[4:]), err
}
}
if len(buf) > 2 && isUTF8BOM3(buf) {
return UTF8, nilIfEmpty(buf[3:]), err
}
if (err != nil && err != io.EOF) || (len(buf) < 2) {
return Unknown, nilIfEmpty(buf), err
}
if isUTF16BigEndianBOM2(buf) {
return UTF16BigEndian, nilIfEmpty(buf[2:]), err
}
if isUTF16LittleEndianBOM2(buf) {
return UTF16LittleEndian, nilIfEmpty(buf[2:]), err
}
return Unknown, nilIfEmpty(buf), err
}
func readBOM(rd io.Reader) (buf []byte, err error) {
const maxBOMSize = 4
var bom [maxBOMSize]byte // used to read BOM
// read as many bytes as possible
for nEmpty, n := 0, 0; err == nil && len(buf) < maxBOMSize; buf = bom[:len(buf)+n] {
if n, err = rd.Read(bom[len(buf):]); n < 0 {
panic(errNegativeRead)
}
if n > 0 {
nEmpty = 0
} else {
nEmpty++
if nEmpty >= maxConsecutiveEmptyReads {
err = io.ErrNoProgress
}
}
}
return
}
func isUTF32BigEndianBOM4(buf []byte) bool {
return buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0xFE && buf[3] == 0xFF
}
func isUTF32LittleEndianBOM4(buf []byte) bool {
return buf[0] == 0xFF && buf[1] == 0xFE && buf[2] == 0x00 && buf[3] == 0x00
}
func isUTF8BOM3(buf []byte) bool {
return buf[0] == 0xEF && buf[1] == 0xBB && buf[2] == 0xBF
}
func isUTF16BigEndianBOM2(buf []byte) bool {
return buf[0] == 0xFE && buf[1] == 0xFF
}
func isUTF16LittleEndianBOM2(buf []byte) bool {
return buf[0] == 0xFF && buf[1] == 0xFE
}
func nilIfEmpty(buf []byte) (res []byte) {
if len(buf) > 0 {
res = buf
}
return
}

@ -0,0 +1,176 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
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not limited to compiled object code, generated documentation,
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designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS

@ -0,0 +1,5 @@
ci:
@goimports -l . || (goimports -d . && exit 1)
@golangci-lint run
@go test -v .
.DEFAULT_GOAL := ci

@ -0,0 +1,451 @@
package hostsfile
import (
"bufio"
"bytes"
"fmt"
"net"
"os"
"path/filepath"
"sort"
"sync"
"github.com/asaskevich/govalidator"
"github.com/dimchansky/utfbom"
)
type lookup struct {
sync.RWMutex
l map[string][]int
}
type Hosts struct {
Path string
Lines []HostsLine
ips lookup
hosts lookup
}
// NewHosts return a new instance of ``Hosts`` using the default hosts file path.
func NewHosts() (*Hosts, error) {
osHostsFilePath := os.ExpandEnv(filepath.FromSlash(HostsFilePath))
if env, isset := os.LookupEnv("HOSTS_PATH"); isset && len(env) > 0 {
osHostsFilePath = os.ExpandEnv(filepath.FromSlash(env))
}
return NewCustomHosts(osHostsFilePath)
}
// NewCustomHosts return a new instance of ``Hosts`` using a custom hosts file path.
func NewCustomHosts(osHostsFilePath string) (*Hosts, error) {
hosts := &Hosts{
Path: osHostsFilePath,
ips: lookup{l: make(map[string][]int)},
hosts: lookup{l: make(map[string][]int)},
}
if err := hosts.Load(); err != nil {
return hosts, err
}
return hosts, nil
}
// IsWritable return ```true``` if hosts file is writable.
func (h *Hosts) IsWritable() bool {
file, err := os.OpenFile(h.Path, os.O_WRONLY, 0660)
if err != nil {
return false
}
defer file.Close()
return true
}
// Load the hosts file into ```l.Lines```.
// ```Load()``` is called by ```NewHosts()``` and ```Hosts.Flush()``` so you
// generally you won't need to call this yourself.
func (h *Hosts) Load() error {
file, err := os.Open(h.Path)
if err != nil {
return err
}
defer file.Close()
// if you're reloading from disk confirm you refresh the hash maps and lines
if len(h.Lines) != 0 {
h.ips = lookup{l: make(map[string][]int)}
h.hosts = lookup{l: make(map[string][]int)}
h.Lines = []HostsLine{}
}
scanner := bufio.NewScanner(utfbom.SkipOnly(file))
for scanner.Scan() {
hl := NewHostsLine(scanner.Text())
h.Lines = append(h.Lines, hl)
pos := len(h.Lines) - 1
h.addIpPosition(hl.IP, pos)
for _, host := range hl.Hosts {
h.addHostPositions(host, pos)
}
}
return scanner.Err()
}
// Flush any changes made to hosts file.
func (h *Hosts) Flush() error {
h.preFlushClean()
file, err := os.Create(h.Path)
if err != nil {
return err
}
defer file.Close()
w := bufio.NewWriter(file)
for _, line := range h.Lines {
if _, err := fmt.Fprintf(w, "%s%s", line.ToRaw(), eol); err != nil {
return err
}
}
err = w.Flush()
if err != nil {
return err
}
return h.Load()
}
// AddRaw takes a line from a hosts file and parses/adds the HostsLine
func (h *Hosts) AddRaw(raw ...string) error {
for _, r := range raw {
nl := NewHostsLine(r)
if nl.IP != "" && net.ParseIP(nl.IP) == nil {
return fmt.Errorf("%q is an invalid IP address", nl.IP)
}
for _, host := range nl.Hosts {
if !govalidator.IsDNSName(host) {
return fmt.Errorf("hostname is not a valid dns name: %s", host)
}
}
h.Lines = append(h.Lines, nl)
pos := len(h.Lines) - 1
h.addIpPosition(nl.IP, pos)
for _, host := range nl.Hosts {
h.addHostPositions(host, pos)
}
}
return nil
}
// Add an entry to the hosts file.
func (h *Hosts) Add(ip string, hosts ...string) error {
if net.ParseIP(ip) == nil {
return fmt.Errorf("%q is an invalid IP address", ip)
}
position := h.getIpPositions(ip)
if len(position) == 0 {
nl := HostsLine{
Raw: buildRawLine(ip, hosts),
IP: ip,
Hosts: hosts,
}
h.Lines = append(h.Lines, nl)
pos := len(h.Lines) - 1
h.addIpPosition(ip, pos)
for _, host := range nl.Hosts {
h.addHostPositions(host, pos)
}
} else {
// add new host to the first one we find
hostsCopy := h.Lines[position[0]].Hosts
for _, addHost := range hosts {
if h.Has(ip, addHost) {
// this combo already exists
continue
}
if !govalidator.IsDNSName(addHost) {
return fmt.Errorf("hostname is not a valid dns name: %s", addHost)
}
if itemInSliceString(addHost, hostsCopy) {
continue // host exists for ip already
}
hostsCopy = append(hostsCopy, addHost)
h.addHostPositions(addHost, position[0])
}
h.Lines[position[0]].Hosts = hostsCopy
h.Lines[position[0]].Raw = h.Lines[position[0]].ToRaw() // reset raw
}
return nil
}
func (h *Hosts) Clear() {
h.Lines = []HostsLine{}
}
// Clean merge duplicate ips and hosts per ip
func (h *Hosts) Clean() {
h.RemoveDuplicateIps()
h.RemoveDuplicateHosts()
h.SortHosts()
h.SortByIp()
h.HostsPerLine(HostsPerLine)
}
// Has return a bool if ip/host combo in hosts file.
func (h *Hosts) Has(ip string, host string) bool {
ippos := h.getIpPositions(ip)
hostpos := h.getHostPositions(host)
for _, pos := range ippos {
if itemInSliceInt(pos, hostpos) {
// if ip and host have matching lookup positions we have a combo match
return true
}
}
return false
}
// HasHostname return a bool if hostname in hosts file.
func (h *Hosts) HasHostname(host string) bool {
return len(h.getHostPositions(host)) > 0
}
func (h *Hosts) HasIp(ip string) bool {
return len(h.getIpPositions(ip)) > 0
}
// Remove an entry from the hosts file.
func (h *Hosts) Remove(ip string, hosts ...string) error {
var outputLines []HostsLine
if net.ParseIP(ip) == nil {
return fmt.Errorf("%q is an invalid IP address", ip)
}
for _, line := range h.Lines {
// Bad lines or comments just get readded.
if line.Err != nil || line.IsComment() || line.IP != ip {
outputLines = append(outputLines, line)
continue
}
var newHosts []string
for _, checkHost := range line.Hosts {
if !itemInSliceString(checkHost, hosts) {
newHosts = append(newHosts, checkHost)
}
}
// If hosts is empty, skip the line completely.
if len(newHosts) > 0 {
newLineRaw := line.IP
for _, host := range newHosts {
newLineRaw = fmt.Sprintf("%s %s", newLineRaw, host)
}
newLine := NewHostsLine(newLineRaw)
outputLines = append(outputLines, newLine)
}
}
h.Lines = outputLines
return nil
}
// RemoveByHostname remove entries by hostname from the hosts file.
func (h *Hosts) RemoveByHostname(host string) error {
for _, p := range h.getHostPositions(host) {
line := &h.Lines[p]
if len(line.Hosts) > 0 {
line.Hosts = removeFromSliceString(host, line.Hosts)
line.RegenRaw()
}
h.removeHostPositions(host, p)
}
return nil
}
func (h *Hosts) RemoveByIp(ip string) error {
pos := h.getIpPositions(ip)
for len(pos) > 0 {
for _, p := range pos {
h.removeByPosition(p)
}
}
return nil
}
func (h *Hosts) RemoveDuplicateIps() {
ipCount := make(map[string]int)
for _, line := range h.Lines {
ipCount[line.IP]++
}
for ip, count := range ipCount {
if count > 1 {
h.combineIp(ip)
}
}
}
func (h *Hosts) RemoveDuplicateHosts() {
for pos, line := range h.Lines {
line.RemoveDuplicateHosts()
h.Lines[pos] = line
}
}
func (h *Hosts) SortHosts() {
for pos, line := range h.Lines {
line.SortHosts()
h.Lines[pos] = line
}
}
// SortByIp convert to net.IP and byte.Compare
func (h *Hosts) SortByIp() {
sortedIps := make([]net.IP, 0, len(h.Lines))
for _, l := range h.Lines {
sortedIps = append(sortedIps, net.ParseIP(l.IP))
}
sort.Slice(sortedIps, func(i, j int) bool {
return bytes.Compare(sortedIps[i], sortedIps[j]) < 0
})
var sortedLines []HostsLine
for _, ip := range sortedIps {
for _, l := range h.Lines {
if ip.String() == l.IP {
sortedLines = append(sortedLines, l)
}
}
}
h.Lines = sortedLines
}
func (h *Hosts) HostsPerLine(count int) {
// restacks everything into 1 ip again so we can do the split, do this even if count is -1 so it can reset the slice
h.RemoveDuplicateIps()
if count <= 0 {
return
}
var newLines []HostsLine
for _, line := range h.Lines {
if len(line.Hosts) <= count {
newLines = append(newLines, line)
continue
}
for i := 0; i < len(line.Hosts); i += count {
lineCopy := line
end := len(line.Hosts)
if end > i+count {
end = i + count
}
lineCopy.Hosts = line.Hosts[i:end]
lineCopy.Raw = lineCopy.ToRaw()
newLines = append(newLines, lineCopy)
}
}
h.Lines = newLines
}
func (h *Hosts) combineIp(ip string) {
newLine := HostsLine{
IP: ip,
}
linesCopy := make([]HostsLine, len(h.Lines))
copy(linesCopy, h.Lines)
for _, line := range linesCopy {
if line.IP == ip {
newLine.Combine(line)
}
}
newLine.SortHosts()
h.removeIp(ip)
h.Lines = append(h.Lines, newLine)
}
func (h *Hosts) removeByPosition(pos int) {
if pos == 0 && len(h.Lines) == 1 {
h.Clear()
return
}
if pos == len(h.Lines) {
h.Lines = h.Lines[:pos-1]
return
}
h.Lines = append(h.Lines[:pos], h.Lines[pos+1:]...)
}
func (h *Hosts) removeIp(ip string) {
var newLines []HostsLine
for _, line := range h.Lines {
if line.IP != ip {
newLines = append(newLines, line)
}
}
h.Lines = newLines
}
func (h *Hosts) getHostPositions(host string) []int {
h.hosts.RLock()
defer h.hosts.RUnlock()
i, ok := h.hosts.l[host]
if ok {
return i
}
return []int{}
}
func (h *Hosts) addHostPositions(host string, pos int) {
h.hosts.Lock()
defer h.hosts.Unlock()
h.hosts.l[host] = append(h.hosts.l[host], pos)
}
func (h *Hosts) removeHostPositions(host string, pos int) {
h.hosts.Lock()
defer h.hosts.Unlock()
positions := h.hosts.l[host]
h.hosts.l[host] = removeFromSliceInt(pos, positions)
}
func (h *Hosts) getIpPositions(ip string) []int {
h.ips.RLock()
defer h.ips.RUnlock()
i, ok := h.ips.l[ip]
if ok {
return i
}
return []int{}
}
func (h *Hosts) addIpPosition(ip string, pos int) {
h.ips.Lock()
defer h.ips.Unlock()
h.ips.l[ip] = append(h.ips.l[ip], pos)
}
func buildRawLine(ip string, hosts []string) string {
output := ip
for _, host := range hosts {
output = fmt.Sprintf("%s %s", output, host)
}
return output
}

@ -0,0 +1,108 @@
package hostsfile
import (
"fmt"
"net"
"sort"
"strings"
)
type HostsLine struct {
IP string
Hosts []string
Raw string
Err error
Comment string
}
const commentChar string = "#"
// NewHostsLine return a new instance of ```HostsLine```.
func NewHostsLine(raw string) HostsLine {
output := HostsLine{Raw: raw}
if output.IsComment() { //whole line is comment
return output
}
if output.HasComment() { //trailing comment
commentSplit := strings.Split(output.Raw, commentChar)
raw = commentSplit[0]
output.Comment = commentSplit[1]
}
fields := strings.Fields(raw)
if len(fields) == 0 {
return output
}
rawIP := fields[0]
if net.ParseIP(rawIP) == nil {
output.Err = fmt.Errorf("bad hosts line: %q", raw)
}
output.IP = rawIP
output.Hosts = fields[1:]
return output
}
func (l *HostsLine) ToRaw() string {
var comment string
if l.IsComment() { //Whole line is comment
return l.Raw
}
if l.Comment != "" {
comment = fmt.Sprintf(" %s%s", commentChar, l.Comment)
}
return fmt.Sprintf("%s %s%s", l.IP, strings.Join(l.Hosts, " "), comment)
}
func (l *HostsLine) RemoveDuplicateHosts() {
unique := make(map[string]struct{})
for _, h := range l.Hosts {
unique[h] = struct{}{}
}
l.Hosts = []string{}
for k := range unique {
l.Hosts = append(l.Hosts, k)
}
l.Raw = l.ToRaw()
}
func (l *HostsLine) Combine(hostline HostsLine) {
l.Hosts = append(l.Hosts, hostline.Hosts...)
if l.Comment == "" {
l.Comment = hostline.Comment
} else {
l.Comment = fmt.Sprintf("%s %s", l.Comment, hostline.Comment)
}
l.Raw = l.ToRaw()
}
func (l *HostsLine) SortHosts() {
sort.Strings(l.Hosts)
l.Raw = l.ToRaw()
}
func (l *HostsLine) IsComment() bool {
return strings.HasPrefix(strings.TrimSpace(l.Raw), commentChar)
}
func (l *HostsLine) HasComment() bool {
return strings.Contains(l.Raw, commentChar)
}
func (l *HostsLine) IsValid() bool {
return l.IP != ""
}
func (l *HostsLine) IsMalformed() bool {
return l.Err != nil
}
func (l *HostsLine) RegenRaw() {
l.Raw = fmt.Sprintf("%s %s", l.IP, strings.Join(l.Hosts, " "))
}

@ -0,0 +1,27 @@
@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
set LF=^
echo %1%
if "%1%"=="" (
set cmd=ci
) else (
set cmd=%1%
)
if "%cmd%" == "ci" (
for /F %%i in ('goimports -l .') do (
set "line=%%i"
set goimports=%goimports%!line!!LF!
)
if not "!goimports!" == "" (
goimports -d .
goto :eof
)
golangci-lint run || goto :eof
go test -v . || goto :eof
goto :eof
)

@ -0,0 +1,55 @@
package hostsfile
func itemInSliceString(item string, list []string) bool {
for _, i := range list {
if i == item {
return true
}
}
return false
}
func itemInSliceInt(item int, list []int) bool {
for _, i := range list {
if i == item {
return true
}
}
return false
}
func removeFromSliceString(s string, slice []string) []string {
pos := findPositionInSliceString(s, slice)
for pos > -1 {
slice = append(slice[:pos], slice[pos+1:]...)
pos = findPositionInSliceString(s, slice)
}
return slice
}
func findPositionInSliceString(s string, slice []string) int {
for index, v := range slice {
if v == s {
return index
}
}
return -1
}
func removeFromSliceInt(s int, slice []int) []int {
pos := findPositionInSliceInt(s, slice)
for pos > -1 {
slice = append(slice[:pos], slice[pos+1:]...)
pos = findPositionInSliceInt(s, slice)
}
return slice
}
func findPositionInSliceInt(s int, slice []int) int {
for index, v := range slice {
if v == s {
return index
}
}
return -1
}

@ -0,0 +1,12 @@
//go:build !windows
//+build !windows
package hostsfile
var (
HostsPerLine = -1 // unlimited
HostsFilePath = "/etc/hosts"
eol = "\n"
)
func (h *Hosts) preFlushClean() {} // no op

@ -0,0 +1,12 @@
package hostsfile
var (
HostsPerLine = 9
HostsFilePath = "${SystemRoot}/System32/drivers/etc/hosts"
eol = "\r\n"
)
func (h *Hosts) preFlushClean() {
// need to force hosts per line always on windows see https://github.com/goodhosts/hostsfile/issues/18
h.HostsPerLine(HostsPerLine)
}

@ -30,6 +30,9 @@ github.com/Microsoft/hcsshim/internal/vmcompute
github.com/Microsoft/hcsshim/internal/wclayer
github.com/Microsoft/hcsshim/internal/winapi
github.com/Microsoft/hcsshim/osversion
# github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
## explicit; go 1.13
github.com/asaskevich/govalidator
# github.com/beorn7/perks v1.0.1
## explicit; go 1.11
github.com/beorn7/perks/quantile
@ -51,6 +54,9 @@ github.com/containerd/containerd/sys
# github.com/davecgh/go-spew v1.1.1
## explicit
github.com/davecgh/go-spew/spew
# github.com/dimchansky/utfbom v1.1.1
## explicit
github.com/dimchansky/utfbom
# github.com/docker/cli v20.10.12+incompatible
## explicit
github.com/docker/cli/cli/command
@ -169,6 +175,9 @@ github.com/golang/protobuf/ptypes
github.com/golang/protobuf/ptypes/any
github.com/golang/protobuf/ptypes/duration
github.com/golang/protobuf/ptypes/timestamp
# github.com/goodhosts/hostsfile v0.1.1
## explicit; go 1.17
github.com/goodhosts/hostsfile
# github.com/google/go-cmp v0.5.6
## explicit; go 1.8
github.com/google/go-cmp/cmp

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