/usr/share/gocode/src/github.com/abbot/go-http-auth/users.go is in golang-github-abbot-go-http-auth-dev 0.0~git20150714.0.46b9627-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import "encoding/csv"
import "os"
/*
SecretProvider is used by authenticators. Takes user name and realm
as an argument, returns secret required for authentication (HA1 for
digest authentication, properly encrypted password for basic).
Returning an empty string means failing the authentication.
*/
type SecretProvider func(user, realm string) string
/*
Common functions for file auto-reloading
*/
type File struct {
Path string
Info os.FileInfo
/* must be set in inherited types during initialization */
Reload func()
}
func (f *File) ReloadIfNeeded() {
info, err := os.Stat(f.Path)
if err != nil {
panic(err)
}
if f.Info == nil || f.Info.ModTime() != info.ModTime() {
f.Info = info
f.Reload()
}
}
/*
Structure used for htdigest file authentication. Users map realms to
maps of users to their HA1 digests.
*/
type HtdigestFile struct {
File
Users map[string]map[string]string
}
func reload_htdigest(hf *HtdigestFile) {
r, err := os.Open(hf.Path)
if err != nil {
panic(err)
}
csv_reader := csv.NewReader(r)
csv_reader.Comma = ':'
csv_reader.Comment = '#'
csv_reader.TrimLeadingSpace = true
records, err := csv_reader.ReadAll()
if err != nil {
panic(err)
}
hf.Users = make(map[string]map[string]string)
for _, record := range records {
_, exists := hf.Users[record[1]]
if !exists {
hf.Users[record[1]] = make(map[string]string)
}
hf.Users[record[1]][record[0]] = record[2]
}
}
/*
SecretProvider implementation based on htdigest-formated files. Will
reload htdigest file on changes. Will panic on syntax errors in
htdigest files.
*/
func HtdigestFileProvider(filename string) SecretProvider {
hf := &HtdigestFile{File: File{Path: filename}}
hf.Reload = func() { reload_htdigest(hf) }
return func(user, realm string) string {
hf.ReloadIfNeeded()
_, exists := hf.Users[realm]
if !exists {
return ""
}
digest, exists := hf.Users[realm][user]
if !exists {
return ""
}
return digest
}
}
/*
Structure used for htdigest file authentication. Users map users to
their salted encrypted password
*/
type HtpasswdFile struct {
File
Users map[string]string
}
func reload_htpasswd(h *HtpasswdFile) {
r, err := os.Open(h.Path)
if err != nil {
panic(err)
}
csv_reader := csv.NewReader(r)
csv_reader.Comma = ':'
csv_reader.Comment = '#'
csv_reader.TrimLeadingSpace = true
records, err := csv_reader.ReadAll()
if err != nil {
panic(err)
}
h.Users = make(map[string]string)
for _, record := range records {
h.Users[record[0]] = record[1]
}
}
/*
SecretProvider implementation based on htpasswd-formated files. Will
reload htpasswd file on changes. Will panic on syntax errors in
htpasswd files. Realm argument of the SecretProvider is ignored.
*/
func HtpasswdFileProvider(filename string) SecretProvider {
h := &HtpasswdFile{File: File{Path: filename}}
h.Reload = func() { reload_htpasswd(h) }
return func(user, realm string) string {
h.ReloadIfNeeded()
password, exists := h.Users[user]
if !exists {
return ""
}
return password
}
}
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