ckp_pam.c
上传用户:ycwykj01
上传日期:2007-01-04
资源大小:1819k
文件大小:3k
- /*
- * Program: Pluggable Authentication Modules login services
- *
- * Author: Mark Crispin
- * Networks and Distributed Computing
- * Computing & Communications
- * University of Washington
- * Administration Building, AG-44
- * Seattle, WA 98195
- * Internet: MRC@CAC.Washington.EDU
- *
- * Date: 1 August 1988
- * Last Edited: 14 December 1998
- *
- * Copyright 1998 by the University of Washington
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appears in all copies and that both the
- * above copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the University of Washington not be
- * used in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. This software is made available
- * "as is", and
- * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
- * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
- * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
- * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
- #include <security/pam_appl.h>
- struct checkpw_cred {
- char *uname; /* user name */
- char *pass; /* password */
- };
- /* PAM conversation function
- * Accepts: number of messages
- * vector of messages
- * pointer to response return
- * application data
- * Returns: PAM_SUCCESS if OK, response vector filled in, else PAM_CONV_ERR
- */
- static int checkpw_conv (int num_msg,const struct pam_message **msg,
- struct pam_response **resp,void *appdata_ptr)
- {
- int i;
- struct checkpw_cred *cred = (struct checkpw_cred *) appdata_ptr;
- struct pam_response *reply = fs_get (sizeof (struct pam_response) * num_msg);
- for (i = 0; i < num_msg; i++) switch (msg[i]->msg_style) {
- case PAM_PROMPT_ECHO_ON: /* assume want user name */
- reply[i].resp_retcode = PAM_SUCCESS;
- reply[i].resp = cpystr (cred->uname);
- break;
- case PAM_PROMPT_ECHO_OFF: /* assume want password */
- reply[i].resp_retcode = PAM_SUCCESS;
- reply[i].resp = cpystr (cred->pass);
- break;
- case PAM_TEXT_INFO:
- case PAM_ERROR_MSG:
- reply[i].resp_retcode = PAM_SUCCESS;
- reply[i].resp = NULL;
- break;
- default: /* unknown message style */
- fs_give ((void **) &reply);
- return PAM_CONV_ERR;
- }
- *resp = reply;
- return PAM_SUCCESS;
- }
- /* Server log in
- * Accepts: user name string
- * password string
- * Returns: T if password validated, NIL otherwise
- */
- struct passwd *checkpw (struct passwd *pw,char *pass,int argc,char *argv[])
- {
- pam_handle_t *hdl;
- struct pam_conv conv;
- struct checkpw_cred cred;
- conv.conv = &checkpw_conv;
- conv.appdata_ptr = &cred;
- cred.uname = pw->pw_name;
- cred.pass = pass;
- if ((pam_start ((char *) mail_parameters (NIL,GET_SERVICENAME,NIL),
- pw->pw_name,&conv,&hdl) != PAM_SUCCESS) ||
- (pam_authenticate (hdl,NIL) != PAM_SUCCESS) ||
- (pam_acct_mgmt (hdl,NIL) != PAM_SUCCESS) ||
- (pam_setcred (hdl,PAM_ESTABLISH_CRED) != PAM_SUCCESS)) {
- pam_end (hdl,PAM_AUTH_ERR); /* failed */
- return NIL;
- }
- pam_end (hdl,PAM_SUCCESS); /* return success */
- return pw;
- }