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- (djm) Add Steve VanDevender's <stevev@darkwing.uoregon.edu> PAM 

password change patch.
 - (djm) Bring licenses on my stuff in line with OpenBSD's
This commit is contained in:
Damien Miller 2000-09-16 16:09:27 +11:00
parent 8a1e6a629e
commit 9d5705a4b3
10 changed files with 103 additions and 80 deletions
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3
ChangeLog
View File

@ -1,4 +1,7 @@
20000916
- (djm) Add Steve VanDevender's <stevev@darkwing.uoregon.edu> PAM
password change patch.
- (djm) Bring licenses on my stuff in line with OpenBSD's
- (djm) Cleanup auth-passwd.c and unify HP/UX authentication. Patch from
Kevin Steves <stevesk@sweden.hp.com>
- (djm) Shadow expiry check fix from Pavel Troller <patrol@omni.sinus.cz>

145
auth-pam.c
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
@ -34,10 +29,10 @@
#include "xmalloc.h"
#include "servconf.h"
RCSID("$Id: auth-pam.c,v 1.12 2000/08/29 22:57:50 djm Exp $");
RCSID("$Id: auth-pam.c,v 1.13 2000/09/16 05:09:27 djm Exp $");
#define NEW_AUTHTOK_MSG \
"Warning: You password has expired, please change it now"
"Warning: Your password has expired, please change it now"
/* Callbacks */
static int pamconv(int num_msg, const struct pam_message **msg,
@ -50,40 +45,72 @@ static struct pam_conv conv = {
pamconv,
NULL
};
static struct pam_handle_t *pamh = NULL;
static pam_handle_t *pamh = NULL;
static const char *pampasswd = NULL;
static char *pam_msg = NULL;
/* PAM conversation function. This is really a kludge to get the password */
/* into PAM and to pick up any messages generated by PAM into pamconv_msg */
/* states for pamconv() */
typedef enum { INITIAL_LOGIN, OTHER } pamstates;
static pamstates pamstate = INITIAL_LOGIN;
/* remember whether pam_acct_mgmt() returned PAM_NEWAUTHTOK_REQD */
static int password_change_required = 0;
/*
* PAM conversation function.
* There are two states this can run in.
*
* INITIAL_LOGIN mode simply feeds the password from the client into
* PAM in response to PAM_PROMPT_ECHO_OFF, and collects output
* messages with pam_msg_cat(). This is used during initial
* authentication to bypass the normal PAM password prompt.
*
* OTHER mode handles PAM_PROMPT_ECHO_OFF with read_passphrase(prompt, 1)
* and outputs messages to stderr. This mode is used if pam_chauthtok()
* is called to update expired passwords.
*/
static int pamconv(int num_msg, const struct pam_message **msg,
struct pam_response **resp, void *appdata_ptr)
{
struct pam_response *reply;
int count;
char buf[1024];
/* PAM will free this later */
reply = malloc(num_msg * sizeof(*reply));
if (reply == NULL)
return PAM_CONV_ERR;
for(count = 0; count < num_msg; count++) {
switch (msg[count]->msg_style) {
case PAM_PROMPT_ECHO_OFF:
if (pampasswd == NULL) {
free(reply);
return PAM_CONV_ERR;
}
for (count = 0; count < num_msg; count++) {
switch ((*msg)[count].msg_style) {
case PAM_PROMPT_ECHO_ON:
fputs((*msg)[count].msg, stderr);
fgets(buf, sizeof(buf), stdin);
reply[count].resp = xstrdup(buf);
reply[count].resp_retcode = PAM_SUCCESS;
reply[count].resp = xstrdup(pampasswd);
break;
case PAM_TEXT_INFO:
case PAM_PROMPT_ECHO_OFF:
if (pamstate == INITIAL_LOGIN) {
if (pampasswd == NULL) {
free(reply);
return PAM_CONV_ERR;
}
reply[count].resp = xstrdup(pampasswd);
} else
reply[count].resp = xstrdup(read_passphrase((*msg)[count].msg, 1));
reply[count].resp_retcode = PAM_SUCCESS;
break;
case PAM_ERROR_MSG:
case PAM_TEXT_INFO:
if ((*msg)[count].msg != NULL) {
if (pamstate == INITIAL_LOGIN)
pam_msg_cat((*msg)[count].msg);
else {
fputs((*msg)[count].msg, stderr);
fputs("\n", stderr);
}
}
reply[count].resp = xstrdup("");
if (msg[count]->msg != NULL)
pam_msg_cat(msg[count]->msg);
reply[count].resp_retcode = PAM_SUCCESS;
break;
default:
free(reply);
@ -103,22 +130,22 @@ void pam_cleanup_proc(void *context)
if (pamh != NULL)
{
pam_retval = pam_close_session((pam_handle_t *)pamh, 0);
pam_retval = pam_close_session(pamh, 0);
if (pam_retval != PAM_SUCCESS) {
log("Cannot close PAM session: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
pam_retval = pam_setcred((pam_handle_t *)pamh, PAM_DELETE_CRED);
pam_retval = pam_setcred(pamh, PAM_DELETE_CRED);
if (pam_retval != PAM_SUCCESS) {
debug("Cannot delete credentials: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
pam_retval = pam_end((pam_handle_t *)pamh, pam_retval);
pam_retval = pam_end(pamh, pam_retval);
if (pam_retval != PAM_SUCCESS) {
log("Cannot release PAM authentication: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
}
}
@ -139,14 +166,15 @@ int auth_pam_password(struct passwd *pw, const char *password)
pampasswd = password;
pam_retval = pam_authenticate((pam_handle_t *)pamh, 0);
pamstate = INITIAL_LOGIN;
pam_retval = pam_authenticate(pamh, 0);
if (pam_retval == PAM_SUCCESS) {
debug("PAM Password authentication accepted for user \"%.100s\"",
pw->pw_name);
return 1;
} else {
debug("PAM Password authentication for \"%.100s\" failed: %s",
pw->pw_name, PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
pw->pw_name, PAM_STRERROR(pamh, pam_retval));
return 0;
}
}
@ -157,33 +185,35 @@ int do_pam_account(char *username, char *remote_user)
int pam_retval;
debug("PAM setting rhost to \"%.200s\"", get_canonical_hostname());
pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_RHOST,
pam_retval = pam_set_item(pamh, PAM_RHOST,
get_canonical_hostname());
if (pam_retval != PAM_SUCCESS) {
fatal("PAM set rhost failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
if (remote_user != NULL) {
debug("PAM setting ruser to \"%.200s\"", remote_user);
pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_RUSER, remote_user);
pam_retval = pam_set_item(pamh, PAM_RUSER, remote_user);
if (pam_retval != PAM_SUCCESS) {
fatal("PAM set ruser failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
}
pam_retval = pam_acct_mgmt((pam_handle_t *)pamh, 0);
pam_retval = pam_acct_mgmt(pamh, 0);
switch (pam_retval) {
case PAM_SUCCESS:
/* This is what we want */
break;
case PAM_NEW_AUTHTOK_REQD:
pam_msg_cat(NEW_AUTHTOK_MSG);
/* flag that password change is necessary */
password_change_required = 1;
break;
default:
log("PAM rejected by account configuration: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
return(0);
}
@ -197,17 +227,17 @@ void do_pam_session(char *username, const char *ttyname)
if (ttyname != NULL) {
debug("PAM setting tty to \"%.200s\"", ttyname);
pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_TTY, ttyname);
pam_retval = pam_set_item(pamh, PAM_TTY, ttyname);
if (pam_retval != PAM_SUCCESS) {
fatal("PAM set tty failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
}
pam_retval = pam_open_session((pam_handle_t *)pamh, 0);
pam_retval = pam_open_session(pamh, 0);
if (pam_retval != PAM_SUCCESS) {
fatal("PAM session setup failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
}
@ -217,10 +247,28 @@ void do_pam_setcred()
int pam_retval;
debug("PAM establishing creds");
pam_retval = pam_setcred((pam_handle_t *)pamh, PAM_ESTABLISH_CRED);
pam_retval = pam_setcred(pamh, PAM_ESTABLISH_CRED);
if (pam_retval != PAM_SUCCESS) {
fatal("PAM setcred failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
}
/*
* Have user change authentication token if pam_acct_mgmt() indicated
* it was expired. This needs to be called after an interactive
* session is established and the user's pty is connected to
* stdin/stout/stderr.
*/
void do_pam_chauthtok()
{
int pam_retval;
if (password_change_required) {
pamstate = OTHER;
do {
pam_retval = pam_chauthtok(pamh, PAM_CHANGE_EXPIRED_AUTHTOK);
} while (pam_retval != PAM_SUCCESS);
}
}
@ -238,12 +286,11 @@ void start_pam(struct passwd *pw)
debug("Starting up PAM with username \"%.200s\"", pw->pw_name);
pam_retval = pam_start(SSHD_PAM_SERVICE, pw->pw_name, &conv,
(pam_handle_t**)&pamh);
pam_retval = pam_start(SSHD_PAM_SERVICE, pw->pw_name, &conv, &pamh);
if (pam_retval != PAM_SUCCESS) {
fatal("PAM initialisation failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
#ifdef PAM_TTY_KLUDGE
@ -254,10 +301,10 @@ void start_pam(struct passwd *pw)
* not even need one (for tty-less connections)
* Kludge: Set a fake PAM_TTY
*/
pam_retval = pam_set_item((pam_handle_t *)pamh, PAM_TTY, "ssh");
pam_retval = pam_set_item(pamh, PAM_TTY, "ssh");
if (pam_retval != PAM_SUCCESS) {
fatal("PAM set tty failed: %.200s",
PAM_STRERROR((pam_handle_t *)pamh, pam_retval));
PAM_STRERROR(pamh, pam_retval));
}
#endif /* PAM_TTY_KLUDGE */
@ -268,7 +315,7 @@ void start_pam(struct passwd *pw)
char **fetch_pam_environment(void)
{
#ifdef HAVE_PAM_GETENVLIST
return(pam_getenvlist((pam_handle_t *)pamh));
return(pam_getenvlist(pamh));
#else /* HAVE_PAM_GETENVLIST */
return(NULL);
#endif /* HAVE_PAM_GETENVLIST */

1
auth-pam.h
View File

@ -11,5 +11,6 @@ int do_pam_account(char *username, char *remote_user);
void do_pam_session(char *username, const char *ttyname);
void do_pam_setcred();
void print_pam_messages(void);
void do_pam_chauthtok();
#endif /* USE_PAM */

5
bsd-arc4random.c
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

5
bsd-arc4random.h
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

5
bsd-misc.c
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

5
bsd-misc.h
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

7
entropy.c
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
@ -40,7 +35,7 @@
# include <floatingpoint.h>
#endif /* HAVE_FLOATINGPOINT_H */
RCSID("$Id: entropy.c,v 1.18 2000/07/15 04:59:15 djm Exp $");
RCSID("$Id: entropy.c,v 1.19 2000/09/16 05:09:28 djm Exp $");
#ifndef offsetof
# define offsetof(type, member) ((size_t) &((type *)0)->member)

5
entropy.h
View File

@ -9,11 +9,6 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Markus Friedl.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

2
session.c
View File

@ -729,6 +729,8 @@ do_login(Session *s)
#ifdef USE_PAM
print_pam_messages();
/* If password change is needed, do it now. */
do_pam_chauthtok();
#endif /* USE_PAM */
#ifdef WITH_AIXAUTHENTICATE
if (aixloginmsg && *aixloginmsg)