/*
- Unix SMB/Netbios implementation.
- Version 2.2.
+ Unix SMB/CIFS implementation.
PAM Password checking
Copyright (C) Andrew Tridgell 1992-2001
Copyright (C) John H Terpsta 1999-2001
Copyright (C) Andrew Bartlett 2001
Copyright (C) Jeremy Allison 2001
-
+
This program 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program 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 program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
*/
#include "includes.h"
+#include "auth.h"
+#include "../libcli/auth/pam_errors.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
#ifdef WITH_PAM
* which determines what actions/limitations/allowances become affected.
*********************************************************************/
+#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
+#elif defined(HAVE_PAM_PAM_APPL_H)
+#include <pam/pam_appl.h>
+#endif
/*
* Structure used to communicate between the conversation function
typedef int (*smb_pam_conv_fn)(int, const struct pam_message **, struct pam_response **, void *appdata_ptr);
-/*
- * Macros to help make life easy
- */
-#define COPY_STRING(s) (s) ? strdup(s) : NULL
+static char *smb_pam_copy_string(const char *s)
+{
+ if (s == NULL) {
+ return NULL;
+ }
+ return SMB_STRDUP(s);
+}
+
+static char *smb_pam_copy_fstring(const char *s)
+{
+ if (s[0] == '\0') {
+ return NULL;
+ }
+ return SMB_STRDUP(s);
+}
/*******************************************************************
PAM error handler.
*********************************************************************/
-static BOOL smb_pam_error_handler(pam_handle_t *pamh, int pam_error, char *msg, int dbglvl)
+static bool smb_pam_error_handler(pam_handle_t *pamh, int pam_error, const char *msg, int dbglvl)
{
if( pam_error != PAM_SUCCESS) {
DEBUG(dbglvl, ("smb_pam_error_handler: PAM: %s : %s\n",
msg, pam_strerror(pamh, pam_error)));
-
return False;
}
return True;
failure as sucess.
*********************************************************************/
-static BOOL smb_pam_nt_status_error_handler(pam_handle_t *pamh, int pam_error,
- char *msg, int dbglvl,
+static bool smb_pam_nt_status_error_handler(pam_handle_t *pamh, int pam_error,
+ const char *msg, int dbglvl,
NTSTATUS *nt_status)
{
+ *nt_status = pam_to_nt_status(pam_error);
+
if (smb_pam_error_handler(pamh, pam_error, msg, dbglvl))
return True;
return PAM_CONV_ERR;
}
- reply = malloc(sizeof(struct pam_response) * num_msg);
+ reply = SMB_MALLOC_ARRAY(struct pam_response, num_msg);
if (!reply)
return PAM_CONV_ERR;
switch (msg[replies]->msg_style) {
case PAM_PROMPT_ECHO_ON:
reply[replies].resp_retcode = PAM_SUCCESS;
- reply[replies].resp = COPY_STRING(udp->PAM_username);
+ reply[replies].resp = smb_pam_copy_string(
+ udp->PAM_username);
/* PAM frees resp */
break;
case PAM_PROMPT_ECHO_OFF:
reply[replies].resp_retcode = PAM_SUCCESS;
- reply[replies].resp = COPY_STRING(udp->PAM_password);
+ reply[replies].resp = smb_pam_copy_string(
+ udp->PAM_password);
/* PAM frees resp */
break;
static void pwd_sub(char *buf, const char *username, const char *oldpass, const char *newpass)
{
- pstring_sub(buf, "%u", username);
+ fstring_sub(buf, "%u", username);
all_string_sub(buf, "%o", oldpass, sizeof(fstring));
all_string_sub(buf, "%n", newpass, sizeof(fstring));
}
Create a linked list containing chat data.
***************************************************************/
-static struct chat_struct *make_pw_chat(char *p)
+static struct chat_struct *make_pw_chat(const char *p)
{
- fstring prompt;
- fstring reply;
+ char *prompt;
+ char *reply;
struct chat_struct *list = NULL;
struct chat_struct *t;
- struct chat_struct *tmp;
+ TALLOC_CTX *frame = talloc_stackframe();
while (1) {
- t = (struct chat_struct *)malloc(sizeof(*t));
+ t = SMB_MALLOC_P(struct chat_struct);
if (!t) {
DEBUG(0,("make_pw_chat: malloc failed!\n"));
+ TALLOC_FREE(frame);
return NULL;
}
ZERO_STRUCTP(t);
- DLIST_ADD_END(list, t, tmp);
+ DLIST_ADD_END(list, t);
- if (!next_token(&p, prompt, NULL, sizeof(fstring)))
+ if (!next_token_talloc(frame, &p, &prompt, NULL)) {
break;
+ }
- if (strequal(prompt,"."))
+ if (strequal(prompt,".")) {
fstrcpy(prompt,"*");
+ }
special_char_sub(prompt);
fstrcpy(t->prompt, prompt);
- strlower(t->prompt);
- trim_string(t->prompt, " ", " ");
+ (void)strlower_m(t->prompt);
+ trim_char(t->prompt, ' ', ' ');
- if (!next_token(&p, reply, NULL, sizeof(fstring)))
+ if (!next_token_talloc(frame, &p, &reply, NULL)) {
break;
+ }
- if (strequal(reply,"."))
- fstrcpy(reply,"");
+ if (strequal(reply,".")) {
+ fstrcpy(reply,"");
+ }
special_char_sub(reply);
fstrcpy(t->reply, reply);
- strlower(t->reply);
- trim_string(t->reply, " ", " ");
+ (void)strlower_m(t->reply);
+ trim_char(t->reply, ' ', ' ');
}
+ TALLOC_FREE(frame);
return list;
}
fstring current_prompt;
fstring current_reply;
struct smb_pam_userdata *udp = (struct smb_pam_userdata *)appdata_ptr;
- struct chat_struct *pw_chat= make_pw_chat(lp_passwd_chat());
+ struct chat_struct *pw_chat;
struct chat_struct *t;
- BOOL found;
+ bool found;
*resp = NULL;
-
+
DEBUG(10,("smb_pam_passchange_conv: starting converstation for %d messages\n", num_msg));
if (num_msg <= 0)
return PAM_CONV_ERR;
- if (pw_chat == NULL)
+ if ((pw_chat = make_pw_chat(lp_passwd_chat(talloc_tos()))) == NULL)
return PAM_CONV_ERR;
/*
return PAM_CONV_ERR;
}
- reply = malloc(sizeof(struct pam_response) * num_msg);
+ reply = SMB_MALLOC_ARRAY(struct pam_response, num_msg);
if (!reply) {
DEBUG(0,("smb_pam_passchange_conv: malloc for reply failed!\n"));
free_pw_chat(pw_chat);
case PAM_PROMPT_ECHO_ON:
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_ON: PAM said: %s\n", msg[replies]->msg));
fstrcpy(current_prompt, msg[replies]->msg);
- trim_string(current_prompt, " ", " ");
+ trim_char(current_prompt, ' ', ' ');
for (t=pw_chat; t; t=t->next) {
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_ON: trying to match |%s| to |%s|\n",
t->prompt, current_prompt ));
- if (unix_wild_match(t->prompt, current_prompt) == 0) {
+ if (unix_wild_match(t->prompt, current_prompt)) {
fstrcpy(current_reply, t->reply);
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_ON: We sent: %s\n", current_reply));
pwd_sub(current_reply, udp->PAM_username, udp->PAM_password, udp->PAM_newpassword);
#ifdef DEBUG_PASSWORD
- DEBUG(100,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_ON: We actualy sent: %s\n", current_reply));
+ DEBUG(100,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_ON: We actually sent: %s\n", current_reply));
#endif
reply[replies].resp_retcode = PAM_SUCCESS;
- reply[replies].resp = COPY_STRING(current_reply);
+ reply[replies].resp = smb_pam_copy_fstring(
+ current_reply);
found = True;
break;
}
case PAM_PROMPT_ECHO_OFF:
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: PAM said: %s\n", msg[replies]->msg));
fstrcpy(current_prompt, msg[replies]->msg);
- trim_string(current_prompt, " ", " ");
+ trim_char(current_prompt, ' ', ' ');
for (t=pw_chat; t; t=t->next) {
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: trying to match |%s| to |%s|\n",
t->prompt, current_prompt ));
- if (unix_wild_match(t->prompt, current_prompt) == 0) {
+ if (unix_wild_match(t->prompt, current_prompt)) {
fstrcpy(current_reply, t->reply);
DEBUG(10,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: We sent: %s\n", current_reply));
pwd_sub(current_reply, udp->PAM_username, udp->PAM_password, udp->PAM_newpassword);
reply[replies].resp_retcode = PAM_SUCCESS;
- reply[replies].resp = COPY_STRING(current_reply);
+ reply[replies].resp = smb_pam_copy_fstring(
+ current_reply);
#ifdef DEBUG_PASSWORD
- DEBUG(100,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: We actualy sent: %s\n", current_reply));
+ DEBUG(100,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: We actually sent: %s\n", current_reply));
#endif
found = True;
break;
}
}
/* PAM frees resp */
-
+
if (!found) {
DEBUG(3,("smb_pam_passchange_conv: Could not find reply for PAM prompt: %s\n",msg[replies]->msg));
free_pw_chat(pw_chat);
reply[replies].resp_retcode = PAM_SUCCESS;
reply[replies].resp = NULL;
break;
-
+
default:
/* Must be an error of some sort... */
free_pw_chat(pw_chat);
return PAM_CONV_ERR;
}
}
-
+
free_pw_chat(pw_chat);
if (reply)
*resp = reply;
static struct pam_conv *smb_setup_pam_conv(smb_pam_conv_fn smb_pam_conv_fnptr, const char *user,
const char *passwd, const char *newpass)
{
- struct pam_conv *pconv = (struct pam_conv *)malloc(sizeof(struct pam_conv));
- struct smb_pam_userdata *udp = (struct smb_pam_userdata *)malloc(sizeof(struct smb_pam_userdata));
+ struct pam_conv *pconv = SMB_MALLOC_P(struct pam_conv);
+ struct smb_pam_userdata *udp = SMB_MALLOC_P(struct smb_pam_userdata);
if (pconv == NULL || udp == NULL) {
SAFE_FREE(pconv);
* PAM Closing out cleanup handler
*/
-static BOOL smb_pam_end(pam_handle_t *pamh, struct pam_conv *smb_pam_conv_ptr)
+static bool smb_pam_end(pam_handle_t *pamh, struct pam_conv *smb_pam_conv_ptr)
{
int pam_error;
smb_free_pam_conv(smb_pam_conv_ptr);
-
+
if( pamh != NULL ) {
pam_error = pam_end(pamh, 0);
if(smb_pam_error_handler(pamh, pam_error, "End Cleanup Failed", 2) == True) {
* Start PAM authentication for specified account
*/
-static BOOL smb_pam_start(pam_handle_t **pamh, const char *user, const char *rhost, struct pam_conv *pconv)
+static bool smb_pam_start(pam_handle_t **pamh, const char *user, const char *rhost, struct pam_conv *pconv)
{
int pam_error;
- const char *our_rhost;
*pamh = (pam_handle_t *)NULL;
return False;
}
- if (rhost == NULL) {
- our_rhost = client_name();
- if (strequal(rhost,"UNKNOWN"))
- our_rhost = client_addr();
- } else {
- our_rhost = rhost;
- }
-
-#ifdef PAM_RHOST
- DEBUG(4,("smb_pam_start: PAM: setting rhost to: %s\n", our_rhost));
- pam_error = pam_set_item(*pamh, PAM_RHOST, our_rhost);
+#if HAVE_PAM_RHOST
+ DEBUG(4,("smb_pam_start: PAM: setting rhost to: %s\n", rhost));
+ pam_error = pam_set_item(*pamh, PAM_RHOST, rhost);
if(!smb_pam_error_handler(*pamh, pam_error, "set rhost failed", 0)) {
smb_pam_end(*pamh, pconv);
*pamh = (pam_handle_t *)NULL;
return False;
}
#endif
-#ifdef PAM_TTY
+#if HAVE_PAM_TTY
DEBUG(4,("smb_pam_start: PAM: setting tty\n"));
pam_error = pam_set_item(*pamh, PAM_TTY, "samba");
if (!smb_pam_error_handler(*pamh, pam_error, "set tty failed", 0)) {
/*
* PAM Authentication Handler
*/
-static NTSTATUS smb_pam_auth(pam_handle_t *pamh, char *user)
+static NTSTATUS smb_pam_auth(pam_handle_t *pamh, const char *user)
{
int pam_error;
NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
* To enable debugging set in /etc/pam.d/samba:
* auth required /lib/security/pam_pwdb.so nullok shadow audit
*/
-
+
DEBUG(4,("smb_pam_auth: PAM: Authenticate User: %s\n", user));
- pam_error = pam_authenticate(pamh, PAM_SILENT | lp_null_passwords() ? 0 : PAM_DISALLOW_NULL_AUTHTOK);
+ pam_error = pam_authenticate(pamh, PAM_SILENT | (lp_null_passwords() ? 0 : PAM_DISALLOW_NULL_AUTHTOK));
switch( pam_error ){
case PAM_AUTH_ERR:
- DEBUG(2, ("smb_pam_auth: PAM: Athentication Error for user %s\n", user));
- nt_status = NT_STATUS_WRONG_PASSWORD;
+ DEBUG(2, ("smb_pam_auth: PAM: Authentication Error for user %s\n", user));
break;
case PAM_CRED_INSUFFICIENT:
DEBUG(2, ("smb_pam_auth: PAM: Insufficient Credentials for user %s\n", user));
- nt_status = NT_STATUS_INSUFFICIENT_LOGON_INFO;
break;
case PAM_AUTHINFO_UNAVAIL:
DEBUG(2, ("smb_pam_auth: PAM: Authentication Information Unavailable for user %s\n", user));
- nt_status = NT_STATUS_LOGON_FAILURE;
break;
case PAM_USER_UNKNOWN:
DEBUG(2, ("smb_pam_auth: PAM: Username %s NOT known to Authentication system\n", user));
- nt_status = NT_STATUS_NO_SUCH_USER;
break;
case PAM_MAXTRIES:
DEBUG(2, ("smb_pam_auth: PAM: One or more authentication modules reports user limit for user %s exceeeded\n", user));
- nt_status = NT_STATUS_REMOTE_SESSION_LIMIT;
break;
case PAM_ABORT:
DEBUG(0, ("smb_pam_auth: PAM: One or more PAM modules failed to load for user %s\n", user));
- nt_status = NT_STATUS_LOGON_FAILURE;
break;
case PAM_SUCCESS:
DEBUG(4, ("smb_pam_auth: PAM: User %s Authenticated OK\n", user));
- nt_status = NT_STATUS_OK;
break;
default:
DEBUG(0, ("smb_pam_auth: PAM: UNKNOWN ERROR while authenticating user %s\n", user));
- nt_status = NT_STATUS_LOGON_FAILURE;
break;
}
switch( pam_error ) {
case PAM_AUTHTOK_EXPIRED:
DEBUG(2, ("smb_pam_account: PAM: User %s is valid but password is expired\n", user));
- nt_status = NT_STATUS_PASSWORD_EXPIRED;
break;
case PAM_ACCT_EXPIRED:
DEBUG(2, ("smb_pam_account: PAM: User %s no longer permitted to access system\n", user));
- nt_status = NT_STATUS_ACCOUNT_EXPIRED;
break;
case PAM_AUTH_ERR:
DEBUG(2, ("smb_pam_account: PAM: There was an authentication error for user %s\n", user));
- nt_status = NT_STATUS_LOGON_FAILURE;
break;
case PAM_PERM_DENIED:
DEBUG(0, ("smb_pam_account: PAM: User %s is NOT permitted to access system at this time\n", user));
- nt_status = NT_STATUS_ACCOUNT_RESTRICTION;
break;
case PAM_USER_UNKNOWN:
DEBUG(0, ("smb_pam_account: PAM: User \"%s\" is NOT known to account management\n", user));
- nt_status = NT_STATUS_NO_SUCH_USER;
break;
case PAM_SUCCESS:
DEBUG(4, ("smb_pam_account: PAM: Account OK for User: %s\n", user));
- nt_status = NT_STATUS_OK;
break;
default:
- nt_status = NT_STATUS_ACCOUNT_DISABLED;
DEBUG(0, ("smb_pam_account: PAM: UNKNOWN PAM ERROR (%d) during Account Management for User: %s\n", pam_error, user));
break;
}
* PAM Credential Setting
*/
-static NTSTATUS smb_pam_setcred(pam_handle_t *pamh, char * user)
+static NTSTATUS smb_pam_setcred(pam_handle_t *pamh, const char * user)
{
int pam_error;
NTSTATUS nt_status = NT_STATUS_NO_TOKEN;
switch( pam_error ) {
case PAM_CRED_UNAVAIL:
DEBUG(0, ("smb_pam_setcred: PAM: Credentials not found for user:%s\n", user ));
- nt_status = NT_STATUS_NO_TOKEN;
break;
case PAM_CRED_EXPIRED:
DEBUG(0, ("smb_pam_setcred: PAM: Credentials for user: \"%s\" EXPIRED!\n", user ));
- nt_status = NT_STATUS_PASSWORD_EXPIRED;
break;
case PAM_USER_UNKNOWN:
DEBUG(0, ("smb_pam_setcred: PAM: User: \"%s\" is NOT known so can not set credentials!\n", user ));
- nt_status = NT_STATUS_NO_SUCH_USER;
break;
case PAM_CRED_ERR:
DEBUG(0, ("smb_pam_setcred: PAM: Unknown setcredentials error - unable to set credentials for %s\n", user ));
- nt_status = NT_STATUS_LOGON_FAILURE;
break;
case PAM_SUCCESS:
DEBUG(4, ("smb_pam_setcred: PAM: SetCredentials OK for User: %s\n", user));
- nt_status = NT_STATUS_OK;
break;
default:
DEBUG(0, ("smb_pam_setcred: PAM: UNKNOWN PAM ERROR (%d) during SetCredentials for User: %s\n", pam_error, user));
- nt_status = NT_STATUS_NO_TOKEN;
break;
}
/*
* PAM Internal Session Handler
*/
-static BOOL smb_internal_pam_session(pam_handle_t *pamh, char *user, char *tty, BOOL flag)
+static bool smb_internal_pam_session(pam_handle_t *pamh, const char *user, const char *tty, bool flag)
{
int pam_error;
-#ifdef PAM_TTY
+#if HAVE_PAM_TTY
DEBUG(4,("smb_internal_pam_session: PAM: tty set to: %s\n", tty));
pam_error = pam_set_item(pamh, PAM_TTY, tty);
if (!smb_pam_error_handler(pamh, pam_error, "set tty failed", 0))
* Internal PAM Password Changer.
*/
-static BOOL smb_pam_chauthtok(pam_handle_t *pamh, const char * user)
+static bool smb_pam_chauthtok(pam_handle_t *pamh, const char * user)
{
int pam_error;
* PAM Externally accessible Session handler
*/
-BOOL smb_pam_claim_session(char *user, char *tty, char *rhost)
+bool smb_pam_claim_session(const char *user, const char *tty, const char *rhost)
{
pam_handle_t *pamh = NULL;
struct pam_conv *pconv = NULL;
* PAM Externally accessible Session handler
*/
-BOOL smb_pam_close_session(char *user, char *tty, char *rhost)
+bool smb_pam_close_session(const char *user, const char *tty, const char *rhost)
{
pam_handle_t *pamh = NULL;
struct pam_conv *pconv = NULL;
* PAM Externally accessible Account handler
*/
-NTSTATUS smb_pam_accountcheck(const char * user)
+NTSTATUS smb_pam_accountcheck(const char *user, const char *rhost)
{
NTSTATUS nt_status = NT_STATUS_ACCOUNT_DISABLED;
pam_handle_t *pamh = NULL;
if ((pconv = smb_setup_pam_conv(smb_pam_conv, user, NULL, NULL)) == NULL)
return NT_STATUS_NO_MEMORY;
- if (!smb_pam_start(&pamh, user, NULL, pconv))
+ if (!smb_pam_start(&pamh, user, rhost, pconv))
return NT_STATUS_ACCOUNT_DISABLED;
if (!NT_STATUS_IS_OK(nt_status = smb_pam_account(pamh, user)))
* PAM Password Validation Suite
*/
-NTSTATUS smb_pam_passcheck(char * user, char * password)
+NTSTATUS smb_pam_passcheck(const char * user, const char * rhost,
+ const char * password)
{
pam_handle_t *pamh = NULL;
NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
if ((pconv = smb_setup_pam_conv(smb_pam_conv, user, password, NULL)) == NULL)
return NT_STATUS_LOGON_FAILURE;
- if (!smb_pam_start(&pamh, user, NULL, pconv))
+ if (!smb_pam_start(&pamh, user, rhost, pconv))
return NT_STATUS_LOGON_FAILURE;
if (!NT_STATUS_IS_OK(nt_status = smb_pam_auth(pamh, user))) {
* PAM Password Change Suite
*/
-BOOL smb_pam_passchange(const char * user, const char * oldpassword, const char * newpassword)
+bool smb_pam_passchange(const char *user, const char *rhost,
+ const char *oldpassword, const char *newpassword)
{
/* Appropriate quantities of root should be obtained BEFORE calling this function */
struct pam_conv *pconv = NULL;
if ((pconv = smb_setup_pam_conv(smb_pam_passchange_conv, user, oldpassword, newpassword)) == NULL)
return False;
- if(!smb_pam_start(&pamh, user, NULL, pconv))
+ if(!smb_pam_start(&pamh, user, rhost, pconv))
return False;
if (!smb_pam_chauthtok(pamh, user)) {
#else
/* If PAM not used, no PAM restrictions on accounts. */
-NTSTATUS smb_pam_accountcheck(const char * user)
+NTSTATUS smb_pam_accountcheck(const char *user, const char *rhost)
{
return NT_STATUS_OK;
}
/* If PAM not used, also no PAM restrictions on sessions. */
-BOOL smb_pam_claim_session(char *user, char *tty, char *rhost)
+bool smb_pam_claim_session(const char *user, const char *tty, const char *rhost)
{
return True;
}
/* If PAM not used, also no PAM restrictions on sessions. */
-BOOL smb_pam_close_session(char *in_user, char *tty, char *rhost)
+bool smb_pam_close_session(const char *in_user, const char *tty, const char *rhost)
{
return True;
}
git.samba.org / vlendec / samba-autobuild / .git / blobdiff