1 files changed, 124 insertions, 0 deletions
diff --git a/go/src/nshd/nslcd_backend/hackers.go b/go/src/nshd/nslcd_backend/hackers.go
new file mode 100644
index 0000000..44107b2
--- /dev/null
+++ b/go/src/nshd/nslcd_backend/hackers.go
@@ -0,0 +1,124 @@
+// 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 is an nslcd_server Backend that
+// speaks to hackers.git.
+package nslcd_backend
+
+import (
+	"fmt"
+	"sync"
+
+	"nshd/nshd_files"
+
+	"git.lukeshu.com/go/libnslcd/nslcd_server"
+	"git.lukeshu.com/go/libnslcd/nslcd_systemd"
+	"git.lukeshu.com/go/libsystemd/sd_daemon"
+)
+
+type config struct {
+	Pam_password_prohibit_message string
+}
+
+type Hackers struct {
+	nslcd_server.NilBackend
+	lock sync.RWMutex
+
+	CfgFilename string
+
+	cfg    config
+	users  map[int32]nshd_files.User
+	groups map[string]map[string]bool
+}
+
+var _ nslcd_systemd.Backend = &Hackers{}
+var _ nslcd_server.Backend = &Hackers{}
+
+func (o *Hackers) Init() error {
+	sd_daemon.Log.Debug(fmt.Sprintf("hackers.git: CfgFilename = %v", o.CfgFilename))
+	err := o.Reload()
+	if err != nil {
+		sd_daemon.Log.Err(fmt.Sprintf("hackers.git: Could not initialize: %v", err))
+		return err
+	}
+	return nil
+}
+
+func (o *Hackers) Close() {
+	sd_daemon.Log.Info("hackers.git: Closing session")
+	o.lock.Lock()
+	defer o.lock.Unlock()
+
+	o.users = make(map[int32]nshd_files.User, 0)
+	o.groups = make(map[string]map[string]bool)
+}
+
+func (o *Hackers) Reload() error {
+	sd_daemon.Log.Info("hackers.git: Loading session")
+	o.lock.Lock()
+	defer o.lock.Unlock()
+
+	var err error
+	o.cfg, err = parse_config(o.CfgFilename)
+	if err != nil {
+		return err
+	}
+	sd_daemon.Log.Info(fmt.Sprintf("hackers.git: pam_password_prohibit_message: %#v", o.cfg.Pam_password_prohibit_message))
+
+	sd_daemon.Log.Debug("hackers.git: Parsing user data")
+	o.users, err = nshd_files.LoadAllUsers()
+	if err != nil {
+		return err
+	}
+
+	passwords, err := nshd_files.LoadAllPasswords()
+	if err != nil {
+		return err
+	}
+
+	o.groups = make(map[string]map[string]bool)
+	for uid, user := range o.users {
+		user.Passwd.GID = usersGid
+		hash, hasHash := passwords[user.Passwd.Name]
+		if !hasHash {
+			hash = "!"
+		}
+		user.Passwd.PwHash = hash
+		o.users[uid] = user
+		for _, groupname := range user.Groups {
+			o.add_user_to_group(user.Passwd.Name, groupname)
+		}
+	}
+	return nil
+}
+
+func (o *Hackers) name2uid(name string) int32 {
+	for uid, data := range o.users {
+		if data.Passwd.Name == name {
+			return uid
+		}
+	}
+	return -1
+}
+
+func (o *Hackers) add_user_to_group(username string, groupname string) {
+	group, found := o.groups[groupname]
+	if !found {
+		group = make(map[string]bool)
+		o.groups[groupname] = group
+	}
+	group[username] = true
+}