diff options
Diffstat (limited to 'source3')
| -rw-r--r-- | source3/passdb/pampass.c | 892 | ||||
| -rw-r--r-- | source3/passdb/pass_check.c | 776 |
2 files changed, 0 insertions, 1668 deletions
diff --git a/source3/passdb/pampass.c b/source3/passdb/pampass.c deleted file mode 100644 index 018eae3a07..0000000000 --- a/source3/passdb/pampass.c +++ /dev/null @@ -1,892 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 2.2. - 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, 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, - char *msg, int dbglvl, - NTSTATUS *nt_status) -{ - 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(sizeof(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) -{ - pstring_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; - struct chat_struct *tmp; - - while (1) { - t = (struct chat_struct *)malloc(sizeof(*t)); - if (!t) { - DEBUG(0,("make_pw_chat: malloc failed!\n")); - return NULL; - } - - ZERO_STRUCTP(t); - - DLIST_ADD_END(list, t, tmp); - - 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(sizeof(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 = (struct pam_conv *)malloc(sizeof(struct pam_conv)); - struct smb_pam_userdata *udp = (struct smb_pam_userdata *)malloc(sizeof(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, 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)); - nt_status = NT_STATUS_WRONG_PASSWORD; - 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; - } - - 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)); - 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; - } - - 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, 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 )); - 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; - } - - 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, char *user, 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(char * user, 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 */ diff --git a/source3/passdb/pass_check.c b/source3/passdb/pass_check.c deleted file mode 100644 index 77839e4bb0..0000000000 --- a/source3/passdb/pass_check.c +++ /dev/null @@ -1,776 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 1.9. - Password checking - Copyright (C) Andrew Tridgell 1992-1998 - - 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 is for checking a username/password against a system - password database. The SMB encrypted password support is elsewhere */ - -#include "includes.h" - -/* these are kept here to keep the string_combinations function simple */ -static fstring this_user; -#if !defined(WITH_PAM) -static fstring this_salt; -static fstring this_crypted; -#endif - -#ifdef WITH_AFS - -#include <afs/stds.h> -#include <afs/kautils.h> - -/******************************************************************* -check on AFS authentication -********************************************************************/ -static BOOL afs_auth(char *user, char *password) -{ - long password_expires = 0; - char *reason; - - /* For versions of AFS prior to 3.3, this routine has few arguments, */ - /* but since I can't find the old documentation... :-) */ - setpag(); - if (ka_UserAuthenticateGeneral - (KA_USERAUTH_VERSION + KA_USERAUTH_DOSETPAG, user, (char *)0, /* instance */ - (char *)0, /* cell */ - password, 0, /* lifetime, default */ - &password_expires, /*days 'til it expires */ - 0, /* spare 2 */ - &reason) == 0) - { - return (True); - } - DEBUG(1, - ("AFS authentication for \"%s\" failed (%s)\n", user, reason)); - return (False); -} -#endif - - -#ifdef WITH_DFS - -#include <dce/dce_error.h> -#include <dce/sec_login.h> - -/***************************************************************** - This new version of the DFS_AUTH code was donated by Karsten Muuss - <muuss@or.uni-bonn.de>. It fixes the following problems with the - old code : - - - Server credentials may expire - - Client credential cache files have wrong owner - - purge_context() function is called with invalid argument - - This new code was modified to ensure that on exit the uid/gid is - still root, and the original directory is restored. JRA. -******************************************************************/ - -sec_login_handle_t my_dce_sec_context; -int dcelogin_atmost_once = 0; - -/******************************************************************* -check on a DCE/DFS authentication -********************************************************************/ -static BOOL dfs_auth(char *user, char *password) -{ - error_status_t err; - int err2; - int prterr; - signed32 expire_time, current_time; - boolean32 password_reset; - struct passwd *pw; - sec_passwd_rec_t passwd_rec; - sec_login_auth_src_t auth_src = sec_login_auth_src_network; - unsigned char dce_errstr[dce_c_error_string_len]; - gid_t egid; - - if (dcelogin_atmost_once) - return (False); - -#ifdef HAVE_CRYPT - /* - * We only go for a DCE login context if the given password - * matches that stored in the local password file.. - * Assumes local passwd file is kept in sync w/ DCE RGY! - */ - - if (strcmp((char *)crypt(password, this_salt), this_crypted)) - { - return (False); - } -#endif - - sec_login_get_current_context(&my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get current context. %s\n", dce_errstr)); - - return (False); - } - - sec_login_certify_identity(my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get current context. %s\n", dce_errstr)); - - return (False); - } - - sec_login_get_expiration(my_dce_sec_context, &expire_time, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get expiration. %s\n", dce_errstr)); - - return (False); - } - - time(¤t_time); - - if (expire_time < (current_time + 60)) - { - struct passwd *pw; - sec_passwd_rec_t *key; - - sec_login_get_pwent(my_dce_sec_context, - (sec_login_passwd_t *) & pw, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr)); - - return (False); - } - - sec_login_refresh_identity(my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't refresh identity. %s\n", - dce_errstr)); - - return (False); - } - - sec_key_mgmt_get_key(rpc_c_authn_dce_secret, NULL, - (unsigned char *)pw->pw_name, - sec_c_key_version_none, - (void **)&key, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get key for %s. %s\n", - pw->pw_name, dce_errstr)); - - return (False); - } - - sec_login_valid_and_cert_ident(my_dce_sec_context, key, - &password_reset, &auth_src, - &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, - ("DCE can't validate and certify identity for %s. %s\n", - pw->pw_name, dce_errstr)); - } - - sec_key_mgmt_free_key(key, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't free key.\n", dce_errstr)); - } - } - - if (sec_login_setup_identity((unsigned char *)user, - sec_login_no_flags, - &my_dce_sec_context, &err) == 0) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE Setup Identity for %s failed: %s\n", - user, dce_errstr)); - return (False); - } - - sec_login_get_pwent(my_dce_sec_context, - (sec_login_passwd_t *) & pw, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr)); - - return (False); - } - - sec_login_purge_context(&my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't purge context. %s\n", dce_errstr)); - - return (False); - } - - /* - * NB. I'd like to change these to call something like change_to_user() - * instead but currently we don't have a connection - * context to become the correct user. This is already - * fairly platform specific code however, so I think - * this should be ok. I have added code to go - * back to being root on error though. JRA. - */ - - egid = getegid(); - - set_effective_gid(pw->pw_gid); - set_effective_uid(pw->pw_uid); - - if (sec_login_setup_identity((unsigned char *)user, - sec_login_no_flags, - &my_dce_sec_context, &err) == 0) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE Setup Identity for %s failed: %s\n", - user, dce_errstr)); - goto err; - } - - sec_login_get_pwent(my_dce_sec_context, - (sec_login_passwd_t *) & pw, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr)); - goto err; - } - - passwd_rec.version_number = sec_passwd_c_version_none; - passwd_rec.pepper = NULL; - passwd_rec.key.key_type = sec_passwd_plain; - passwd_rec.key.tagged_union.plain = (idl_char *) password; - - sec_login_validate_identity(my_dce_sec_context, - &passwd_rec, &password_reset, - &auth_src, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, - ("DCE Identity Validation failed for principal %s: %s\n", - user, dce_errstr)); - goto err; - } - - sec_login_certify_identity(my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE certify identity failed: %s\n", dce_errstr)); - goto err; - } - - if (auth_src != sec_login_auth_src_network) - { - DEBUG(0, ("DCE context has no network credentials.\n")); - } - - sec_login_set_context(my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, - ("DCE login failed for principal %s, cant set context: %s\n", - user, dce_errstr)); - - sec_login_purge_context(&my_dce_sec_context, &err); - goto err; - } - - sec_login_get_pwent(my_dce_sec_context, - (sec_login_passwd_t *) & pw, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get pwent. %s\n", dce_errstr)); - goto err; - } - - DEBUG(0, ("DCE login succeeded for principal %s on pid %d\n", - user, sys_getpid())); - - DEBUG(3, ("DCE principal: %s\n" - " uid: %d\n" - " gid: %d\n", - pw->pw_name, pw->pw_uid, pw->pw_gid)); - DEBUG(3, (" info: %s\n" - " dir: %s\n" - " shell: %s\n", - pw->pw_gecos, pw->pw_dir, pw->pw_shell)); - - sec_login_get_expiration(my_dce_sec_context, &expire_time, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, ("DCE can't get expiration. %s\n", dce_errstr)); - goto err; - } - - set_effective_uid(0); - set_effective_gid(0); - - DEBUG(0, - ("DCE context expires: %s", asctime(localtime(&expire_time)))); - - dcelogin_atmost_once = 1; - return (True); - - err: - - /* Go back to root, JRA. */ - set_effective_uid(0); - set_effective_gid(egid); - return (False); -} - -void dfs_unlogin(void) -{ - error_status_t err; - int err2; - unsigned char dce_errstr[dce_c_error_string_len]; - - sec_login_purge_context(&my_dce_sec_context, &err); - if (err != error_status_ok) - { - dce_error_inq_text(err, dce_errstr, &err2); - DEBUG(0, - ("DCE purge login context failed for server instance %d: %s\n", - sys_getpid(), dce_errstr)); - } -} -#endif - -#ifdef LINUX_BIGCRYPT -/**************************************************************************** -an enhanced crypt for Linux to handle password longer than 8 characters -****************************************************************************/ -static int linux_bigcrypt(char *password, char *salt1, char *crypted) -{ -#define LINUX_PASSWORD_SEG_CHARS 8 - char salt[3]; - int i; - - StrnCpy(salt, salt1, 2); - crypted += 2; - - for (i = strlen(password); i > 0; i -= LINUX_PASSWORD_SEG_CHARS) { - char *p = crypt(password, salt) + 2; - if (strncmp(p, crypted, LINUX_PASSWORD_SEG_CHARS) != 0) - return (0); - password += LINUX_PASSWORD_SEG_CHARS; - crypted += strlen(p); - } - - return (1); -} -#endif - -#ifdef OSF1_ENH_SEC -/**************************************************************************** -an enhanced crypt for OSF1 -****************************************************************************/ -static char *osf1_bigcrypt(char *password, char *salt1) -{ - static char result[AUTH_MAX_PASSWD_LENGTH] = ""; - char *p1; - char *p2 = password; - char salt[3]; - int i; - int parts = strlen(password) / AUTH_CLEARTEXT_SEG_CHARS; - if (strlen(password) % AUTH_CLEARTEXT_SEG_CHARS) - parts++; - - StrnCpy(salt, salt1, 2); - StrnCpy(result, salt1, 2); - result[2] = '\0'; - - for (i = 0; i < parts; i++) { - p1 = crypt(p2, salt); - strncat(result, p1 + 2, - AUTH_MAX_PASSWD_LENGTH - strlen(p1 + 2) - 1); - StrnCpy(salt, &result[2 + i * AUTH_CIPHERTEXT_SEG_CHARS], 2); - p2 += AUTH_CLEARTEXT_SEG_CHARS; - } - - return (result); -} -#endif - - -/**************************************************************************** -apply a function to upper/lower case combinations -of a string and return true if one of them returns true. -try all combinations with N uppercase letters. -offset is the first char to try and change (start with 0) -it assumes the string starts lowercased -****************************************************************************/ -static NTSTATUS string_combinations2(char *s, int offset, NTSTATUS (*fn) (char *), - int N) -{ - int len = strlen(s); - int i; - NTSTATUS nt_status; - -#ifdef PASSWORD_LENGTH - len = MIN(len, PASSWORD_LENGTH); -#endif - - if (N <= 0 || offset >= len) - return (fn(s)); - - for (i = offset; i < (len - (N - 1)); i++) { - char c = s[i]; - if (!islower(c)) - continue; - s[i] = toupper(c); - if (!NT_STATUS_EQUAL(nt_status = string_combinations2(s, i + 1, fn, N - 1),NT_STATUS_WRONG_PASSWORD)) { - return (nt_status); - } - s[i] = c; - } - return (NT_STATUS_WRONG_PASSWORD); -} - -/**************************************************************************** -apply a function to upper/lower case combinations -of a string and return true if one of them returns true. -try all combinations with up to N uppercase letters. -offset is the first char to try and change (start with 0) -it assumes the string starts lowercased -****************************************************************************/ -static NTSTATUS string_combinations(char *s, NTSTATUS (*fn) (char *), int N) -{ - int n; - NTSTATUS nt_status; - for (n = 1; n <= N; n++) - if (!NT_STATUS_EQUAL(nt_status = string_combinations2(s, 0, fn, n), NT_STATUS_WRONG_PASSWORD)) - return nt_status; - return NT_STATUS_WRONG_PASSWORD; -} - - -/**************************************************************************** -core of password checking routine -****************************************************************************/ -static NTSTATUS password_check(char *password) -{ -#ifdef WITH_PAM - return smb_pam_passcheck(this_user, password); -#else - - BOOL ret; - -#ifdef WITH_AFS - if (afs_auth(this_user, password)) - return NT_STATUS_OK; -#endif /* WITH_AFS */ - -#ifdef WITH_DFS - if (dfs_auth(this_user, password)) - return NT_STATUS_OK; -#endif /* WITH_DFS */ - -#ifdef OSF1_ENH_SEC - - ret = (strcmp(osf1_bigcrypt(password, this_salt), - this_crypted) == 0); - if (!ret) { - DEBUG(2, - ("OSF1_ENH_SEC failed. Trying normal crypt.\n")); - ret = (strcmp((char *)crypt(password, this_salt), this_crypted) == 0); - } - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } - -#endif /* OSF1_ENH_SEC */ - -#ifdef ULTRIX_AUTH - ret = (strcmp((char *)crypt16(password, this_salt), this_crypted) == 0); - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } - -#endif /* ULTRIX_AUTH */ - -#ifdef LINUX_BIGCRYPT - ret = (linux_bigcrypt(password, this_salt, this_crypted)); - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } -#endif /* LINUX_BIGCRYPT */ - -#if defined(HAVE_BIGCRYPT) && defined(HAVE_CRYPT) && defined(USE_BOTH_CRYPT_CALLS) - - /* - * Some systems have bigcrypt in the C library but might not - * actually use it for the password hashes (HPUX 10.20) is - * a noteable example. So we try bigcrypt first, followed - * by crypt. - */ - - if (strcmp(bigcrypt(password, this_salt), this_crypted) == 0) - return NT_STATUS_OK; - else - ret = (strcmp((char *)crypt(password, this_salt), this_crypted) == 0); - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } -#else /* HAVE_BIGCRYPT && HAVE_CRYPT && USE_BOTH_CRYPT_CALLS */ - -#ifdef HAVE_BIGCRYPT - ret = (strcmp(bigcrypt(password, this_salt), this_crypted) == 0); - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } -#endif /* HAVE_BIGCRYPT */ - -#ifndef HAVE_CRYPT - DEBUG(1, ("Warning - no crypt available\n")); - return NT_STATUS_LOGON_FAILURE; -#else /* HAVE_CRYPT */ - ret = (strcmp((char *)crypt(password, this_salt), this_crypted) == 0); - if (ret) { - return NT_STATUS_OK; - } else { - return NT_STATUS_WRONG_PASSWORD; - } -#endif /* HAVE_CRYPT */ -#endif /* HAVE_BIGCRYPT && HAVE_CRYPT && USE_BOTH_CRYPT_CALLS */ -#endif /* WITH_PAM || KRB4_AUTH || KRB5_AUTH */ -} - - - -/**************************************************************************** -CHECK if a username/password is OK -the function pointer fn() points to a function to call when a successful -match is found and is used to update the encrypted password file -return NT_STATUS_OK on correct match, appropriate error otherwise -****************************************************************************/ - -NTSTATUS pass_check(struct passwd *pass, char *user, char *password, - int pwlen, BOOL (*fn) (char *, char *), BOOL run_cracker) -{ - pstring pass2; - int level = lp_passwordlevel(); - - NTSTATUS nt_status; - if (password) - password[pwlen] = 0; - -#if DEBUG_PASSWORD - DEBUG(100, ("checking user=[%s] pass=[%s]\n", user, password)); -#endif - - if (!password) - return NT_STATUS_LOGON_FAILURE; - - if (((!*password) || (!pwlen)) && !lp_null_passwords()) - return NT_STATUS_LOGON_FAILURE; - -#if defined(WITH_PAM) - - /* - * If we're using PAM we want to short-circuit all the - * checks below and dive straight into the PAM code. - */ - - fstrcpy(this_user, user); - - DEBUG(4, ("pass_check: Checking (PAM) password for user %s (l=%d)\n", user, pwlen)); - -#else /* Not using PAM or Kerebos */ - - DEBUG(4, ("pass_check: Checking password for user %s (l=%d)\n", user, pwlen)); - - if (!pass) { - DEBUG(3, ("Couldn't find user %s\n", user)); - return NT_STATUS_NO_SUCH_USER; - } - -#ifdef HAVE_GETSPNAM - { - struct spwd *spass; - - /* many shadow systems require you to be root to get - the password, in most cases this should already be - the case when this function is called, except - perhaps for IPC password changing requests */ - - spass = getspnam(pass->pw_name); - if (spass && spass->sp_pwdp) - pstrcpy(pass->pw_passwd, spass->sp_pwdp); - } -#elif defined(IA_UINFO) - { - /* Need to get password with SVR4.2's ia_ functions - instead of get{sp,pw}ent functions. Required by - UnixWare 2.x, tested on version - 2.1. (tangent@cyberport.com) */ - uinfo_t uinfo; - if (ia_openinfo(pass->pw_name, &uinfo) != -1) - ia_get_logpwd(uinfo, &(pass->pw_passwd)); - } -#endif - -#ifdef HAVE_GETPRPWNAM - { - struct pr_passwd *pr_pw = getprpwnam(pass->pw_name); - if (pr_pw && pr_pw->ufld.fd_encrypt) - pstrcpy(pass->pw_passwd, pr_pw->ufld.fd_encrypt); - } -#endif - -#ifdef OSF1_ENH_SEC - { - struct pr_passwd *mypasswd; - DEBUG(5, ("Checking password for user %s in OSF1_ENH_SEC\n", - user)); - mypasswd = getprpwnam(user); - if (mypasswd) { - fstrcpy(pass->pw_name, mypasswd->ufld.fd_name); - fstrcpy(pass->pw_passwd, mypasswd->ufld.fd_encrypt); - } else { - DEBUG(5, - ("OSF1_ENH_SEC: No entry for user %s in protected database !\n", - user)); - } - } -#endif - -#ifdef ULTRIX_AUTH - { - AUTHORIZATION *ap = getauthuid(pass->pw_uid); - if (ap) { - fstrcpy(pass->pw_passwd, ap->a_password); - endauthent(); - } - } -#endif - - /* extract relevant info */ - fstrcpy(this_salt, pass->pw_passwd); - -#if defined(HAVE_TRUNCATED_SALT) - /* crypt on some platforms (HPUX in particular) - won't work with more than 2 salt characters. */ - this_salt[2] = 0; -#endif - - fstrcpy(this_crypted, pass->pw_passwd); - - if (!*this_crypted) { - if (!lp_null_passwords()) { - DEBUG(2, ("Disallowing %s with null password\n", - this_user)); - return NT_STATUS_LOGON_FAILURE; - } - if (!*password) { - DEBUG(3, - ("Allowing access to %s with null password\n", - this_user)); - return NT_STATUS_OK; - } - } - -#endif /* defined(WITH_PAM) */ - - /* try it as it came to us */ - nt_status = password_check(password); - if NT_STATUS_IS_OK(nt_status) { - if (fn) { - fn(user, password); - } - return (nt_status); - } else if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD)) { - /* No point continuing if its not the password thats to blame (ie PAM disabled). */ - return (nt_status); - } - - if (!run_cracker) { - return (nt_status); - } - - /* if the password was given to us with mixed case then we don't - * need to proceed as we know it hasn't been case modified by the - * client */ - if (strhasupper(password) && strhaslower(password)) { - return nt_status; - } - - /* make a copy of it */ - StrnCpy(pass2, password, sizeof(pstring) - 1); - - /* try all lowercase if it's currently all uppercase */ - if (strhasupper(password)) { - strlower(password); - if NT_STATUS_IS_OK(nt_status = password_check(password)) { - if (fn) - fn(user, password); - return (nt_status); - } - } - - /* give up? */ - if (level < 1) { - /* restore it */ - fstrcpy(password, pass2); - return NT_STATUS_WRONG_PASSWORD; - } - - /* last chance - all combinations of up to level chars upper! */ - strlower(password); - - - if NT_STATUS_IS_OK(nt_status = string_combinations(password, password_check, level)) { - if (fn) - fn(user, password); - return nt_status; - } - - /* restore it */ - fstrcpy(password, pass2); - - return NT_STATUS_WRONG_PASSWORD; -} |