diff options
Diffstat (limited to 'source4/auth/pampass.c')
| -rw-r--r-- | source4/auth/pampass.c | 871 |
1 files changed, 0 insertions, 871 deletions
diff --git a/source4/auth/pampass.c b/source4/auth/pampass.c deleted file mode 100644 index cb614b49af..0000000000 --- a/source4/auth/pampass.c +++ /dev/null @@ -1,871 +0,0 @@ -/* - 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 - (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. -*/ - -/* - * This module provides PAM based functions for validation of - * username/password pairs, account managment, session and access control. - * Note: SMB password checking is done in smbpass.c - */ - -#include "includes.h" - -#ifdef WITH_PAM - -/******************************************************************* - * Handle PAM authentication - * - Access, Authentication, Session, Password - * Note: See PAM Documentation and refer to local system PAM implementation - * which determines what actions/limitations/allowances become affected. - *********************************************************************/ - -#include <security/pam_appl.h> - -/* - * Structure used to communicate between the conversation function - * and the server_login/change password functions. - */ - -struct smb_pam_userdata { - const char *PAM_username; - const char *PAM_password; - const char *PAM_newpassword; -}; - -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 - -/******************************************************************* - PAM error handler. - *********************************************************************/ - -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; -} - -/******************************************************************* - This function is a sanity check, to make sure that we NEVER report - failure as sucess. -*********************************************************************/ - -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; - - if (NT_STATUS_IS_OK(*nt_status)) { - /* Complain LOUDLY */ - DEBUG(0, ("smb_pam_nt_status_error_handler: PAM: BUG: PAM and NT_STATUS \ -error MISMATCH, forcing to NT_STATUS_LOGON_FAILURE")); - *nt_status = NT_STATUS_LOGON_FAILURE; - } - return False; -} - -/* - * PAM conversation function - * Here we assume (for now, at least) that echo on means login name, and - * echo off means password. - */ - -static int smb_pam_conv(int num_msg, - const struct pam_message **msg, - struct pam_response **resp, - void *appdata_ptr) -{ - int replies = 0; - struct pam_response *reply = NULL; - struct smb_pam_userdata *udp = (struct smb_pam_userdata *)appdata_ptr; - - *resp = NULL; - - if (num_msg <= 0) - return PAM_CONV_ERR; - - /* - * Apparantly HPUX has a buggy PAM that doesn't support the - * appdata_ptr. Fail if this is the case. JRA. - */ - - if (udp == NULL) { - DEBUG(0,("smb_pam_conv: PAM on this system is broken - appdata_ptr == NULL !\n")); - return PAM_CONV_ERR; - } - - reply = malloc_array_p(struct pam_response, num_msg); - if (!reply) - return PAM_CONV_ERR; - - memset(reply, '\0', sizeof(struct pam_response) * num_msg); - - for (replies = 0; replies < num_msg; replies++) { - switch (msg[replies]->msg_style) { - case PAM_PROMPT_ECHO_ON: - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = 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); - /* PAM frees resp */ - break; - - case PAM_TEXT_INFO: - /* fall through */ - - case PAM_ERROR_MSG: - /* ignore it... */ - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = NULL; - break; - - default: - /* Must be an error of some sort... */ - SAFE_FREE(reply); - return PAM_CONV_ERR; - } - } - if (reply) - *resp = reply; - return PAM_SUCCESS; -} - -/* - * PAM password change conversation function - * Here we assume (for now, at least) that echo on means login name, and - * echo off means password. - */ - -static void special_char_sub(char *buf) -{ - all_string_sub(buf, "\\n", "", 0); - all_string_sub(buf, "\\r", "", 0); - all_string_sub(buf, "\\s", " ", 0); - all_string_sub(buf, "\\t", "\t", 0); -} - -static void pwd_sub(char *buf, const char *username, const char *oldpass, const char *newpass) -{ - fstring_sub(buf, "%u", username); - all_string_sub(buf, "%o", oldpass, sizeof(fstring)); - all_string_sub(buf, "%n", newpass, sizeof(fstring)); -} - - -struct chat_struct { - struct chat_struct *next, *prev; - fstring prompt; - fstring reply; -}; - -/************************************************************** - Create a linked list containing chat data. -***************************************************************/ - -static struct chat_struct *make_pw_chat(char *p) -{ - fstring prompt; - fstring reply; - struct chat_struct *list = NULL; - struct chat_struct *t; - - while (1) { - t = malloc_p(struct chat_struct); - if (!t) { - DEBUG(0,("make_pw_chat: malloc failed!\n")); - return NULL; - } - - ZERO_STRUCTP(t); - - DLIST_ADD_END(list, t, struct chat_struct *); - - if (!next_token(&p, prompt, NULL, sizeof(fstring))) - break; - - if (strequal(prompt,".")) - fstrcpy(prompt,"*"); - - special_char_sub(prompt); - fstrcpy(t->prompt, prompt); - strlower(t->prompt); - trim_string(t->prompt, " ", " "); - - if (!next_token(&p, reply, NULL, sizeof(fstring))) - break; - - if (strequal(reply,".")) - fstrcpy(reply,""); - - special_char_sub(reply); - fstrcpy(t->reply, reply); - strlower(t->reply); - trim_string(t->reply, " ", " "); - - } - return list; -} - -static void free_pw_chat(struct chat_struct *list) -{ - while (list) { - struct chat_struct *old_head = list; - DLIST_REMOVE(list, list); - SAFE_FREE(old_head); - } -} - -static int smb_pam_passchange_conv(int num_msg, - const struct pam_message **msg, - struct pam_response **resp, - void *appdata_ptr) -{ - int replies = 0; - struct pam_response *reply = NULL; - 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 *t; - 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) - return PAM_CONV_ERR; - - /* - * Apparantly HPUX has a buggy PAM that doesn't support the - * appdata_ptr. Fail if this is the case. JRA. - */ - - if (udp == NULL) { - DEBUG(0,("smb_pam_passchange_conv: PAM on this system is broken - appdata_ptr == NULL !\n")); - free_pw_chat(pw_chat); - return PAM_CONV_ERR; - } - - reply = malloc_array_p(struct pam_response, num_msg); - if (!reply) { - DEBUG(0,("smb_pam_passchange_conv: malloc for reply failed!\n")); - free_pw_chat(pw_chat); - return PAM_CONV_ERR; - } - - for (replies = 0; replies < num_msg; replies++) { - found = False; - DEBUG(10,("smb_pam_passchange_conv: Processing message %d\n", replies)); - switch (msg[replies]->msg_style) { - 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, " ", " "); - 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) { - 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)); -#endif - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = COPY_STRING(current_reply); - 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); - SAFE_FREE(reply); - return PAM_CONV_ERR; - } - 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, " ", " "); - 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) { - 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); -#ifdef DEBUG_PASSWORD - DEBUG(100,("smb_pam_passchange_conv: PAM_PROMPT_ECHO_OFF: We actualy 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); - SAFE_FREE(reply); - return PAM_CONV_ERR; - } - break; - - case PAM_TEXT_INFO: - /* fall through */ - - case PAM_ERROR_MSG: - /* ignore it... */ - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = NULL; - break; - - default: - /* Must be an error of some sort... */ - free_pw_chat(pw_chat); - SAFE_FREE(reply); - return PAM_CONV_ERR; - } - } - - free_pw_chat(pw_chat); - if (reply) - *resp = reply; - return PAM_SUCCESS; -} - -/*************************************************************************** - Free up a malloced pam_conv struct. -****************************************************************************/ - -static void smb_free_pam_conv(struct pam_conv *pconv) -{ - if (pconv) - SAFE_FREE(pconv->appdata_ptr); - - SAFE_FREE(pconv); -} - -/*************************************************************************** - Allocate a pam_conv struct. -****************************************************************************/ - -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 = malloc_p(struct pam_conv); - struct smb_pam_userdata *udp = malloc_p(struct smb_pam_userdata); - - if (pconv == NULL || udp == NULL) { - SAFE_FREE(pconv); - SAFE_FREE(udp); - return NULL; - } - - udp->PAM_username = user; - udp->PAM_password = passwd; - udp->PAM_newpassword = newpass; - - pconv->conv = smb_pam_conv_fnptr; - pconv->appdata_ptr = (void *)udp; - return pconv; -} - -/* - * PAM Closing out cleanup handler - */ - -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) { - DEBUG(4, ("smb_pam_end: PAM: PAM_END OK.\n")); - return True; - } - } - DEBUG(2,("smb_pam_end: PAM: not initialised")); - return False; -} - -/* - * 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) -{ - int pam_error; - const char *our_rhost; - - *pamh = (pam_handle_t *)NULL; - - DEBUG(4,("smb_pam_start: PAM: Init user: %s\n", user)); - - pam_error = pam_start("samba", user, pconv, pamh); - if( !smb_pam_error_handler(*pamh, pam_error, "Init Failed", 0)) { - *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(!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 - 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)) { - smb_pam_end(*pamh, pconv); - *pamh = (pam_handle_t *)NULL; - return False; - } -#endif - DEBUG(4,("smb_pam_start: PAM: Init passed for user: %s\n", user)); - return True; -} - -/* - * PAM Authentication Handler - */ -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); - switch( pam_error ){ - case PAM_AUTH_ERR: - DEBUG(2, ("smb_pam_auth: PAM: Athentication Error for user %s\n", user)); - break; - case PAM_CRED_INSUFFICIENT: - DEBUG(2, ("smb_pam_auth: PAM: Insufficient Credentials for user %s\n", user)); - break; - case PAM_AUTHINFO_UNAVAIL: - DEBUG(2, ("smb_pam_auth: PAM: Authentication Information Unavailable for user %s\n", user)); - break; - case PAM_USER_UNKNOWN: - DEBUG(2, ("smb_pam_auth: PAM: Username %s NOT known to Authentication system\n", 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)); - break; - case PAM_ABORT: - DEBUG(0, ("smb_pam_auth: PAM: One or more PAM modules failed to load for user %s\n", user)); - break; - case PAM_SUCCESS: - DEBUG(4, ("smb_pam_auth: PAM: User %s Authenticated OK\n", user)); - break; - default: - DEBUG(0, ("smb_pam_auth: PAM: UNKNOWN ERROR while authenticating user %s\n", user)); - break; - } - - smb_pam_nt_status_error_handler(pamh, pam_error, "Authentication Failure", 2, &nt_status); - return nt_status; -} - -/* - * PAM Account Handler - */ -static NTSTATUS smb_pam_account(pam_handle_t *pamh, const char * user) -{ - int pam_error; - NTSTATUS nt_status = NT_STATUS_ACCOUNT_DISABLED; - - DEBUG(4,("smb_pam_account: PAM: Account Management for User: %s\n", user)); - pam_error = pam_acct_mgmt(pamh, PAM_SILENT); /* Is user account enabled? */ - switch( pam_error ) { - case PAM_AUTHTOK_EXPIRED: - DEBUG(2, ("smb_pam_account: PAM: User %s is valid but password is expired\n", user)); - break; - case PAM_ACCT_EXPIRED: - DEBUG(2, ("smb_pam_account: PAM: User %s no longer permitted to access system\n", user)); - break; - case PAM_AUTH_ERR: - DEBUG(2, ("smb_pam_account: PAM: There was an authentication error for user %s\n", user)); - break; - case PAM_PERM_DENIED: - DEBUG(0, ("smb_pam_account: PAM: User %s is NOT permitted to access system at this time\n", user)); - break; - case PAM_USER_UNKNOWN: - DEBUG(0, ("smb_pam_account: PAM: User \"%s\" is NOT known to account management\n", user)); - break; - case PAM_SUCCESS: - DEBUG(4, ("smb_pam_account: PAM: Account OK for User: %s\n", user)); - break; - default: - DEBUG(0, ("smb_pam_account: PAM: UNKNOWN PAM ERROR (%d) during Account Management for User: %s\n", pam_error, user)); - break; - } - - smb_pam_nt_status_error_handler(pamh, pam_error, "Account Check Failed", 2, &nt_status); - return nt_status; -} - -/* - * PAM Credential Setting - */ - -static NTSTATUS smb_pam_setcred(pam_handle_t *pamh, const char * user) -{ - int pam_error; - NTSTATUS nt_status = NT_STATUS_NO_TOKEN; - - /* - * This will allow samba to aquire a kerberos token. And, when - * exporting an AFS cell, be able to /write/ to this cell. - */ - - DEBUG(4,("PAM: Account Management SetCredentials for User: %s\n", user)); - pam_error = pam_setcred(pamh, (PAM_ESTABLISH_CRED|PAM_SILENT)); - switch( pam_error ) { - case PAM_CRED_UNAVAIL: - DEBUG(0, ("smb_pam_setcred: PAM: Credentials not found for user:%s\n", user )); - break; - case PAM_CRED_EXPIRED: - DEBUG(0, ("smb_pam_setcred: PAM: Credentials for user: \"%s\" EXPIRED!\n", user )); - break; - case PAM_USER_UNKNOWN: - DEBUG(0, ("smb_pam_setcred: PAM: User: \"%s\" is NOT known so can not set credentials!\n", user )); - break; - case PAM_CRED_ERR: - DEBUG(0, ("smb_pam_setcred: PAM: Unknown setcredentials error - unable to set credentials for %s\n", user )); - break; - case PAM_SUCCESS: - DEBUG(4, ("smb_pam_setcred: PAM: SetCredentials OK for User: %s\n", user)); - break; - default: - DEBUG(0, ("smb_pam_setcred: PAM: UNKNOWN PAM ERROR (%d) during SetCredentials for User: %s\n", pam_error, user)); - break; - } - - smb_pam_nt_status_error_handler(pamh, pam_error, "Set Credential Failure", 2, &nt_status); - return nt_status; -} - -/* - * PAM Internal Session Handler - */ -static BOOL smb_internal_pam_session(pam_handle_t *pamh, const char *user, const char *tty, BOOL flag) -{ - int pam_error; - -#ifdef 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)) - return False; -#endif - - if (flag) { - pam_error = pam_open_session(pamh, PAM_SILENT); - if (!smb_pam_error_handler(pamh, pam_error, "session setup failed", 0)) - return False; - } else { - pam_setcred(pamh, (PAM_DELETE_CRED|PAM_SILENT)); /* We don't care if this fails */ - pam_error = pam_close_session(pamh, PAM_SILENT); /* This will probably pick up the error anyway */ - if (!smb_pam_error_handler(pamh, pam_error, "session close failed", 0)) - return False; - } - return (True); -} - -/* - * Internal PAM Password Changer. - */ - -static BOOL smb_pam_chauthtok(pam_handle_t *pamh, const char * user) -{ - int pam_error; - - DEBUG(4,("smb_pam_chauthtok: PAM: Password Change for User: %s\n", user)); - - pam_error = pam_chauthtok(pamh, PAM_SILENT); /* Change Password */ - - switch( pam_error ) { - case PAM_AUTHTOK_ERR: - DEBUG(2, ("PAM: unable to obtain the new authentication token - is password to weak?\n")); - break; - - /* This doesn't seem to be defined on Solaris. JRA */ -#ifdef PAM_AUTHTOK_RECOVER_ERR - case PAM_AUTHTOK_RECOVER_ERR: - DEBUG(2, ("PAM: unable to obtain the old authentication token - was the old password wrong?.\n")); - break; -#endif - - case PAM_AUTHTOK_LOCK_BUSY: - DEBUG(2, ("PAM: unable to change the authentication token since it is currently locked.\n")); - break; - case PAM_AUTHTOK_DISABLE_AGING: - DEBUG(2, ("PAM: Authentication token aging has been disabled.\n")); - break; - case PAM_PERM_DENIED: - DEBUG(0, ("PAM: Permission denied.\n")); - break; - case PAM_TRY_AGAIN: - DEBUG(0, ("PAM: Could not update all authentication token(s). No authentication tokens were updated.\n")); - break; - case PAM_USER_UNKNOWN: - DEBUG(0, ("PAM: User not known to PAM\n")); - break; - case PAM_SUCCESS: - DEBUG(4, ("PAM: Account OK for User: %s\n", user)); - break; - default: - DEBUG(0, ("PAM: UNKNOWN PAM ERROR (%d) for User: %s\n", pam_error, user)); - } - - if(!smb_pam_error_handler(pamh, pam_error, "Password Change Failed", 2)) { - return False; - } - - /* If this point is reached, the password has changed. */ - return True; -} - -/* - * PAM Externally accessible Session handler - */ - -BOOL smb_pam_claim_session(char *user, char *tty, char *rhost) -{ - pam_handle_t *pamh = NULL; - struct pam_conv *pconv = NULL; - - /* Ignore PAM if told to. */ - - if (!lp_obey_pam_restrictions()) - return True; - - if ((pconv = smb_setup_pam_conv(smb_pam_conv, user, NULL, NULL)) == NULL) - return False; - - if (!smb_pam_start(&pamh, user, rhost, pconv)) - return False; - - if (!smb_internal_pam_session(pamh, user, tty, True)) { - smb_pam_end(pamh, pconv); - return False; - } - - return smb_pam_end(pamh, pconv); -} - -/* - * PAM Externally accessible Session handler - */ - -BOOL smb_pam_close_session(char *user, char *tty, char *rhost) -{ - pam_handle_t *pamh = NULL; - struct pam_conv *pconv = NULL; - - /* Ignore PAM if told to. */ - - if (!lp_obey_pam_restrictions()) - return True; - - if ((pconv = smb_setup_pam_conv(smb_pam_conv, user, NULL, NULL)) == NULL) - return False; - - if (!smb_pam_start(&pamh, user, rhost, pconv)) - return False; - - if (!smb_internal_pam_session(pamh, user, tty, False)) { - smb_pam_end(pamh, pconv); - return False; - } - - return smb_pam_end(pamh, pconv); -} - -/* - * PAM Externally accessible Account handler - */ - -NTSTATUS smb_pam_accountcheck(const char * user) -{ - NTSTATUS nt_status = NT_STATUS_ACCOUNT_DISABLED; - pam_handle_t *pamh = NULL; - struct pam_conv *pconv = NULL; - - /* Ignore PAM if told to. */ - - if (!lp_obey_pam_restrictions()) - return NT_STATUS_OK; - - 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)) - return NT_STATUS_ACCOUNT_DISABLED; - - if (!NT_STATUS_IS_OK(nt_status = smb_pam_account(pamh, user))) - DEBUG(0, ("smb_pam_accountcheck: PAM: Account Validation Failed - Rejecting User %s!\n", user)); - - smb_pam_end(pamh, pconv); - return nt_status; -} - -/* - * PAM Password Validation Suite - */ - -NTSTATUS smb_pam_passcheck(const char * user, const char * password) -{ - pam_handle_t *pamh = NULL; - NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE; - struct pam_conv *pconv = NULL; - - /* - * Note we can't ignore PAM here as this is the only - * way of doing auths on plaintext passwords when - * compiled --with-pam. - */ - - 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)) - return NT_STATUS_LOGON_FAILURE; - - if (!NT_STATUS_IS_OK(nt_status = smb_pam_auth(pamh, user))) { - DEBUG(0, ("smb_pam_passcheck: PAM: smb_pam_auth failed - Rejecting User %s !\n", user)); - smb_pam_end(pamh, pconv); - return nt_status; - } - - if (!NT_STATUS_IS_OK(nt_status = smb_pam_account(pamh, user))) { - DEBUG(0, ("smb_pam_passcheck: PAM: smb_pam_account failed - Rejecting User %s !\n", user)); - smb_pam_end(pamh, pconv); - return nt_status; - } - - if (!NT_STATUS_IS_OK(nt_status = smb_pam_setcred(pamh, user))) { - DEBUG(0, ("smb_pam_passcheck: PAM: smb_pam_setcred failed - Rejecting User %s !\n", user)); - smb_pam_end(pamh, pconv); - return nt_status; - } - - smb_pam_end(pamh, pconv); - return nt_status; -} - -/* - * PAM Password Change Suite - */ - -BOOL smb_pam_passchange(const char * user, const char * oldpassword, const char * newpassword) -{ - /* Appropriate quantities of root should be obtained BEFORE calling this function */ - struct pam_conv *pconv = NULL; - pam_handle_t *pamh = 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)) - return False; - - if (!smb_pam_chauthtok(pamh, user)) { - DEBUG(0, ("smb_pam_passchange: PAM: Password Change Failed for user %s!\n", user)); - smb_pam_end(pamh, pconv); - return False; - } - - return smb_pam_end(pamh, pconv); -} - -#else - -/* If PAM not used, no PAM restrictions on accounts. */ -NTSTATUS smb_pam_accountcheck(const char * user) -{ - 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) -{ - return True; -} - -/* If PAM not used, also no PAM restrictions on sessions. */ -BOOL smb_pam_close_session(char *in_user, char *tty, char *rhost) -{ - return True; -} -#endif /* WITH_PAM */ |