mirror of
https://github.com/Ponce/slackbuilds
synced 2024-11-21 19:42:24 +01:00
116 lines
2.7 KiB
Diff
116 lines
2.7 KiB
Diff
From 33feceb1573cbb6ba7fb326bb7872de75bca6b9e Mon Sep 17 00:00:00 2001
|
|
From: mancha <mancha1 AT zoho DOT com>
|
|
Date: Wed, 18 Feb 2015
|
|
Subject: Fix account validation with glibc crypt
|
|
|
|
Starting with glibc 2.17, crypt() can return NULL which can cause
|
|
xrdp-sesman to segfault. This patch backports upstream's fix for
|
|
this as well as changes auth_userpass so it can validate SHA-256
|
|
and SHA-512 hashed passwords.
|
|
|
|
---
|
|
sesman/verify_user.c | 87 ++++++++++++++++-------------------------
|
|
1 file changed, 35 insertions(+), 52 deletions(-)
|
|
|
|
--- a/sesman/verify_user.c
|
|
+++ b/sesman/verify_user.c
|
|
@@ -51,64 +51,47 @@ auth_account_disabled(struct spwd* stp);
|
|
long DEFAULT_CC
|
|
auth_userpass(char* user, char* pass)
|
|
{
|
|
- char salt[13] = "$1$";
|
|
- char hash[35] = "";
|
|
- char* encr = 0;
|
|
- struct passwd* spw;
|
|
- struct spwd* stp;
|
|
- int saltcnt = 0;
|
|
-
|
|
- spw = getpwnam(user);
|
|
- if (spw == 0)
|
|
- {
|
|
- return 0;
|
|
- }
|
|
- if (g_strncmp(spw->pw_passwd, "x", 3) == 0)
|
|
- {
|
|
- /* the system is using shadow */
|
|
- stp = getspnam(user);
|
|
- if (stp == 0)
|
|
+ const char *encr;
|
|
+ const char *epass;
|
|
+ struct passwd *spw;
|
|
+ struct spwd *stp;
|
|
+
|
|
+ spw = getpwnam(user);
|
|
+
|
|
+ if (spw == 0)
|
|
+ {
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ if (g_strncmp(spw->pw_passwd, "x", 3) == 0)
|
|
{
|
|
- return 0;
|
|
+ /* the system is using shadow */
|
|
+ stp = getspnam(user);
|
|
+
|
|
+ if (stp == 0)
|
|
+ {
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ if (1 == auth_account_disabled(stp))
|
|
+ {
|
|
+ log_message(&(g_cfg->log), LOG_LEVEL_INFO, "account %s is disabled", user);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ encr = stp->sp_pwdp;
|
|
}
|
|
- if (1==auth_account_disabled(stp))
|
|
+ else
|
|
{
|
|
- log_message(&(g_cfg->log), LOG_LEVEL_INFO, "account %s is disabled", user);
|
|
- return 0;
|
|
+ /* old system with only passwd */
|
|
+ encr = spw->pw_passwd;
|
|
}
|
|
- g_strncpy(hash, stp->sp_pwdp, 34);
|
|
- }
|
|
- else
|
|
- {
|
|
- /* old system with only passwd */
|
|
- g_strncpy(hash, spw->pw_passwd, 34);
|
|
- }
|
|
- hash[34] = '\0';
|
|
- if (g_strncmp(hash, "$1$", 3) == 0)
|
|
- {
|
|
- /* gnu style crypt(); */
|
|
- saltcnt = 3;
|
|
- while ((hash[saltcnt] != '$') && (saltcnt < 11))
|
|
+ epass = crypt(pass, encr);
|
|
+ if (epass == 0)
|
|
{
|
|
- salt[saltcnt] = hash[saltcnt];
|
|
- saltcnt++;
|
|
+ return 0;
|
|
}
|
|
- salt[saltcnt] = '$';
|
|
- salt[saltcnt + 1] = '\0';
|
|
- }
|
|
- else
|
|
- {
|
|
- /* classic two char salt */
|
|
- salt[0] = hash[0];
|
|
- salt[1] = hash[1];
|
|
- salt[2] = '\0';
|
|
- }
|
|
- encr = crypt(pass,salt);
|
|
- if (g_strncmp(encr, hash, 34) != 0)
|
|
- {
|
|
- return 0;
|
|
- }
|
|
- return 1;
|
|
+ return (strcmp(encr, epass) == 0);
|
|
}
|
|
|
|
/******************************************************************************/
|