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100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/*
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* Copyright (C) 2006 Martin Koegler
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* Copyright (C) 2010 TigerVNC Team
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifndef HAVE_PAM
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#error "This source should not be compiled when PAM is unsupported"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <security/pam_appl.h>
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#include <rfb/pam.h>
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typedef struct
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{
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const char *username;
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const char *password;
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} AuthData;
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#if defined(__sun)
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static int pam_callback(int count, struct pam_message **in,
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struct pam_response **out, void *ptr)
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#else
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static int pam_callback(int count, const struct pam_message **in,
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struct pam_response **out, void *ptr)
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#endif
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{
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int i;
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AuthData *auth = (AuthData *) ptr;
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struct pam_response *resp =
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(struct pam_response *) malloc (sizeof (struct pam_response) * count);
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if (!resp && count)
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return PAM_CONV_ERR;
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for (i = 0; i < count; i++) {
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resp[i].resp_retcode = PAM_SUCCESS;
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switch (in[i]->msg_style) {
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case PAM_TEXT_INFO:
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case PAM_ERROR_MSG:
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resp[i].resp = 0;
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break;
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case PAM_PROMPT_ECHO_ON: /* Send Username */
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resp[i].resp = strdup(auth->username);
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break;
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case PAM_PROMPT_ECHO_OFF: /* Send Password */
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resp[i].resp = strdup(auth->password);
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break;
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default:
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free(resp);
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return PAM_CONV_ERR;
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}
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}
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*out = resp;
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return PAM_SUCCESS;
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}
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int do_pam_auth(const char *service, const char *username, const char *password)
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{
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int ret;
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AuthData auth = { username, password };
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struct pam_conv conv = {
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pam_callback,
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&auth
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};
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pam_handle_t *h = 0;
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ret = pam_start(service, username, &conv, &h);
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if (ret == PAM_SUCCESS)
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ret = pam_authenticate(h, 0);
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if (ret == PAM_SUCCESS)
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ret = pam_acct_mgmt(h, 0);
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pam_end(h, ret);
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return ret == PAM_SUCCESS ? 1 : 0;
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}
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