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* src/su.c: Merge environment setting blocks after the creation of

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the session.
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nekral-guest 2011-06-13 18:27:12 +00:00
parent b63c830547
commit 5d6f4f8ea4
2 changed files with 60 additions and 55 deletions
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2
ChangeLog
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@ -5,6 +5,8 @@
* src/su.c: Split check_perms() in to a PAM (check_perms_pam) and * src/su.c: Split check_perms() in to a PAM (check_perms_pam) and
a non-PAM (check_perms_nopam) version. a non-PAM (check_perms_nopam) version.
* src/su.c: Cleanup check_perms_nopam(). * src/su.c: Cleanup check_perms_nopam().
* src/su.c: Merge environment setting blocks after the creation of
the session.
2011-06-10 Nicolas François <nicolas.francois@centraliens.net> 2011-06-10 Nicolas François <nicolas.francois@centraliens.net>

113
src/su.c
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@ -867,6 +867,64 @@ int main (int argc, char **argv)
shellstr = SHELL; shellstr = SHELL;
} }
sulog (caller_tty, true, caller_name, name); /* save SU information */
endpwent ();
endspent ();
#ifdef USE_SYSLOG
if (getdef_bool ("SYSLOG_SU_ENAB")) {
SYSLOG ((LOG_INFO, "+ %s %s:%s", caller_tty,
('\0' != caller_name[0]) ? caller_name : "???",
('\0' != name[0]) ? name : "???"));
}
#endif
#ifdef USE_PAM
/* set primary group id and supplementary groups */
if (setup_groups (pw) != 0) {
pam_end (pamh, PAM_ABORT);
exit (1);
}
/*
* pam_setcred() may do things like resource limits, console groups,
* and much more, depending on the configured modules
*/
ret = pam_setcred (pamh, PAM_ESTABLISH_CRED);
if (PAM_SUCCESS != ret) {
SYSLOG ((LOG_ERR, "pam_setcred: %s", pam_strerror (pamh, ret)));
fprintf (stderr, _("%s: %s\n"), Prog, pam_strerror (pamh, ret));
(void) pam_end (pamh, ret);
exit (1);
}
ret = pam_open_session (pamh, 0);
if (PAM_SUCCESS != ret) {
SYSLOG ((LOG_ERR, "pam_open_session: %s",
pam_strerror (pamh, ret)));
fprintf (stderr, _("%s: %s\n"), Prog, pam_strerror (pamh, ret));
pam_setcred (pamh, PAM_DELETE_CRED);
(void) pam_end (pamh, ret);
exit (1);
}
/* become the new user */
if (change_uid (pw) != 0) {
pam_close_session (pamh, 0);
pam_setcred (pamh, PAM_DELETE_CRED);
(void) pam_end (pamh, PAM_ABORT);
exit (1);
}
#else /* !USE_PAM */
/* no limits if su from root (unless su must fake login's behavior) */
if (!caller_is_root || fakelogin) {
setup_limits (pw);
}
if (setup_uid_gid (pw, caller_on_console) != 0) {
exit (1);
}
#endif /* !USE_PAM */
/* /*
* If a new login is being set up, the old environment will be * If a new login is being set up, the old environment will be
* ignored and a new one created later on. * ignored and a new one created later on.
@ -942,46 +1000,7 @@ int main (int argc, char **argv)
addenv ("IFS= \t\n", NULL); /* ... instead, set a safe IFS */ addenv ("IFS= \t\n", NULL); /* ... instead, set a safe IFS */
} }
sulog (caller_tty, true, caller_name, name); /* save SU information */
endpwent ();
endspent ();
#ifdef USE_SYSLOG
if (getdef_bool ("SYSLOG_SU_ENAB")) {
SYSLOG ((LOG_INFO, "+ %s %s:%s", caller_tty,
('\0' != caller_name[0]) ? caller_name : "???",
('\0' != name[0]) ? name : "???"));
}
#endif
#ifdef USE_PAM #ifdef USE_PAM
/* set primary group id and supplementary groups */
if (setup_groups (pw) != 0) {
pam_end (pamh, PAM_ABORT);
exit (1);
}
/*
* pam_setcred() may do things like resource limits, console groups,
* and much more, depending on the configured modules
*/
ret = pam_setcred (pamh, PAM_ESTABLISH_CRED);
if (PAM_SUCCESS != ret) {
SYSLOG ((LOG_ERR, "pam_setcred: %s", pam_strerror (pamh, ret)));
fprintf (stderr, _("%s: %s\n"), Prog, pam_strerror (pamh, ret));
(void) pam_end (pamh, ret);
exit (1);
}
ret = pam_open_session (pamh, 0);
if (PAM_SUCCESS != ret) {
SYSLOG ((LOG_ERR, "pam_open_session: %s",
pam_strerror (pamh, ret)));
fprintf (stderr, _("%s: %s\n"), Prog, pam_strerror (pamh, ret));
pam_setcred (pamh, PAM_DELETE_CRED);
(void) pam_end (pamh, ret);
exit (1);
}
/* we need to setup the environment *after* pam_open_session(), /* we need to setup the environment *after* pam_open_session(),
* else the UID is changed before stuff like pam_xauth could * else the UID is changed before stuff like pam_xauth could
* run, and we cannot access /etc/shadow and co * run, and we cannot access /etc/shadow and co
@ -999,24 +1018,8 @@ int main (int argc, char **argv)
} }
} }
/* become the new user */
if (change_uid (pw) != 0) {
pam_close_session (pamh, 0);
pam_setcred (pamh, PAM_DELETE_CRED);
(void) pam_end (pamh, PAM_ABORT);
exit (1);
}
#else /* !USE_PAM */ #else /* !USE_PAM */
environ = newenvp; /* make new environment active */ environ = newenvp; /* make new environment active */
/* no limits if su from root (unless su must fake login's behavior) */
if (!caller_is_root || fakelogin) {
setup_limits (pw);
}
if (setup_uid_gid (pw, caller_on_console) != 0) {
exit (1);
}
#endif /* !USE_PAM */ #endif /* !USE_PAM */
if (change_environment) { if (change_environment) {