summaryrefslogtreecommitdiff
path: root/go/src/nshd/nslcd_backend/db_passwd.go
diff options
context:
space:
mode:
Diffstat (limited to 'go/src/nshd/nslcd_backend/db_passwd.go')
-rw-r--r--go/src/nshd/nslcd_backend/db_passwd.go88
1 files changed, 88 insertions, 0 deletions
diff --git a/go/src/nshd/nslcd_backend/db_passwd.go b/go/src/nshd/nslcd_backend/db_passwd.go
new file mode 100644
index 0000000..ace127e
--- /dev/null
+++ b/go/src/nshd/nslcd_backend/db_passwd.go
@@ -0,0 +1,88 @@
+// Copyright 2015-2016 Luke Shumaker <lukeshu@sbcglobal.net>.
+//
+// This is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// This software is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public
+// License along with this manual; if not, see
+// <http://www.gnu.org/licenses/>.
+
+package nslcd_backend
+
+import (
+ p "git.lukeshu.com/go/libnslcd/nslcd_proto"
+ s "golang.org/x/sys/unix"
+)
+
+/* Note that the output password hash value should be one of:
+ <empty> - no password set, allow login without password
+ ! - used to prevent logins
+ x - "valid" encrypted password that does not match any valid
+ password often used to indicate that the password is
+ defined elsewhere (i.e., in the shadow database)
+ other - encrypted password, in crypt(3) format
+
+ A "!" prefix on a password hash "locks" the account; therefore a a
+ hash of "!" says "no login"; while a hash of "x" says "you may log
+ in", but fails to authorize; passing the buck to the next database.
+
+ */
+
+func (o *Hackers) Passwd_ByName(cred s.Ucred, req p.Request_Passwd_ByName) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ uid := o.name2uid(req.Name)
+ if uid < 0 {
+ return
+ }
+ passwd := o.users[uid].Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }()
+ return ret
+}
+
+func (o *Hackers) Passwd_ByUID(cred s.Ucred, req p.Request_Passwd_ByUID) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ user, found := o.users[req.UID]
+ if !found {
+ return
+ }
+ passwd := user.Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }()
+ return ret
+}
+
+func (o *Hackers) Passwd_All(cred s.Ucred, req p.Request_Passwd_All) <-chan p.Passwd {
+ o.lock.RLock()
+ ret := make(chan p.Passwd)
+ go func() {
+ defer o.lock.RUnlock()
+ defer close(ret)
+
+ for _, user := range o.users {
+ passwd := user.Passwd
+ passwd.PwHash = "x" // only put actual hashes in the Shadow DB
+ ret <- passwd
+ }
+ }()
+ return ret
+}