diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-17 20:09:33 -0400 |
---|---|---|
committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-17 20:09:33 -0400 |
commit | 4d12729aa4026229e4e118b924cc3b1c75ca214b (patch) | |
tree | abd9a69ec11504844148b1017f9e9601ef7e90b8 /src/parabola_hackers/nslcd_backend/db_pam.go | |
parent | 4f175a22cf726bfa09652d8d9ca6374785561348 (diff) |
write setuid, move things around
Diffstat (limited to 'src/parabola_hackers/nslcd_backend/db_pam.go')
-rw-r--r-- | src/parabola_hackers/nslcd_backend/db_pam.go | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/src/parabola_hackers/nslcd_backend/db_pam.go b/src/parabola_hackers/nslcd_backend/db_pam.go deleted file mode 100644 index 3374170..0000000 --- a/src/parabola_hackers/nslcd_backend/db_pam.go +++ /dev/null @@ -1,167 +0,0 @@ -// 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 hackers_nslcd_backend - -import ( - "fmt" - "parabola_hackers" - s "syscall" - - "lukeshu.com/git/go/libgnulinux.git/crypt" - p "lukeshu.com/git/go/libnslcd.git/proto" - "lukeshu.com/git/go/libsystemd.git/sd_daemon/logger" -) - -func checkPassword(password string, hash string) bool { - return crypt.Crypt(password, hash) == hash -} - -func hashPassword(newPassword string, oldHash string) string { - salt := oldHash - if salt == "!" { - str, err := parabola_hackers.RandomString(crypt.SaltAlphabet, 8) - if err != nil { - logger.Err("Could not generate a random string") - str = "" - } - salt = "$6$" + str + "$" - } - return crypt.Crypt(newPassword, salt) -} - -func (o *Hackers) PAM_Authentication(cred s.Ucred, req p.Request_PAM_Authentication) <-chan p.PAM_Authentication { - o.lock.RLock() - ret := make(chan p.PAM_Authentication) - go func() { - defer o.lock.RUnlock() - defer close(ret) - - uid := o.name2uid(req.UserName) - if uid < 0 { - return - } - - user := o.users[uid] - obj := p.PAM_Authentication{ - AuthenticationResult: p.NSLCD_PAM_AUTH_ERR, - UserName: "", - AuthorizationResult: p.NSLCD_PAM_AUTH_ERR, - AuthorizationError: "", - } - if checkPassword(req.Password, user.Passwd.PwHash) { - obj.AuthenticationResult = p.NSLCD_PAM_SUCCESS - obj.AuthorizationResult = obj.AuthenticationResult - obj.UserName = user.Passwd.Name - } - ret <- obj - }() - return ret -} - -func (o *Hackers) PAM_Authorization(cred s.Ucred, req p.Request_PAM_Authorization) <-chan p.PAM_Authorization { - o.lock.RLock() - ret := make(chan p.PAM_Authorization) - go func() { - defer o.lock.RUnlock() - defer close(ret) - - uid := o.name2uid(req.UserName) - if uid < 0 { - return - } - ret <- p.PAM_Authorization{ - Result: p.NSLCD_PAM_SUCCESS, - Error: "", - } - }() - return ret -} - -const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" - -func (o *Hackers) PAM_SessionOpen(cred s.Ucred, req p.Request_PAM_SessionOpen) <-chan p.PAM_SessionOpen { - ret := make(chan p.PAM_SessionOpen) - go func() { - defer close(ret) - - sessionid, err := parabola_hackers.RandomString(alphabet, 24) - if err != nil { - return - } - ret <- p.PAM_SessionOpen{SessionID: sessionid} - }() - return ret -} - -func (o *Hackers) PAM_SessionClose(cred s.Ucred, req p.Request_PAM_SessionClose) <-chan p.PAM_SessionClose { - ret := make(chan p.PAM_SessionClose) - go close(ret) - return ret -} - -func (o *Hackers) PAM_PwMod(cred s.Ucred, req p.Request_PAM_PwMod) <-chan p.PAM_PwMod { - ret := make(chan p.PAM_PwMod) - o.lock.Lock() - go func() { - defer close(ret) - defer o.lock.Unlock() - - uid := o.name2uid(req.UserName) - if uid < 0 { - return - } - user := o.users[uid] - - // Check the OldPassword - if req.AsRoot == 1 { - if !checkPassword(req.OldPassword, user.Passwd.PwHash) { - ret <- p.PAM_PwMod{ - Result: p.NSLCD_PAM_PERM_DENIED, - Error: fmt.Sprintf("password change failed: %s", "Old password did not match"), - } - return - } - } - - // Update the PwHash in memory - user.Passwd.PwHash = hashPassword(req.NewPassword, user.Passwd.PwHash) - if user.Passwd.PwHash == "" { - logger.Err("Password hashing failed") - return - } - - // Update the PwHash on disk - passwords := make(map[string]string, len(o.users)) - for _, ouser := range o.users { - passwords[ouser.Passwd.Name] = ouser.Passwd.PwHash - } - passwords[user.Passwd.Name] = user.Passwd.PwHash - err := parabola_hackers.SaveAllPasswords(passwords) - if err != nil { - logger.Err("Writing passwords to disk: %v", err) - return - } - - // Ok, we're done, commit the changes - o.users[uid] = user - ret <- p.PAM_PwMod{ - Result: p.NSLCD_PAM_SUCCESS, - Error: "", - } - }() - return ret -} |