137 lines
2.9 KiB
Go
137 lines
2.9 KiB
Go
package auth
|
|
|
|
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).
|
|
*/
|
|
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
|
|
}
|
|
}
|