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Annotation of embedaddon/sudo/plugins/sudoers/auth/aix_auth.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 1999-2005, 2007-2011 Todd C. Miller <Todd.Miller@courtesan.com>
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  *
                     16:  * Sponsored in part by the Defense Advanced Research Projects
                     17:  * Agency (DARPA) and Air Force Research Laboratory, Air Force
                     18:  * Materiel Command, USAF, under agreement number F39502-99-1-0512.
                     19:  */
                     20: 
                     21: #include <config.h>
                     22: 
                     23: #include <sys/types.h>
                     24: #include <sys/param.h>
                     25: #include <stdio.h>
                     26: #ifdef STDC_HEADERS
                     27: # include <stdlib.h>
                     28: # include <stddef.h>
                     29: #else
                     30: # ifdef HAVE_STDLIB_H
                     31: #  include <stdlib.h>
                     32: # endif
                     33: #endif /* STDC_HEADERS */
                     34: #ifdef HAVE_STRING_H
                     35: # include <string.h>
                     36: #endif /* HAVE_STRING_H */
                     37: #ifdef HAVE_STRINGS_H
                     38: # include <strings.h>
                     39: #endif /* HAVE_STRING_H */
                     40: #ifdef HAVE_UNISTD_H
                     41: # include <unistd.h>
                     42: #endif /* HAVE_UNISTD_H */
                     43: #include <pwd.h>
                     44: #include <usersec.h>
                     45: 
                     46: #include "sudoers.h"
                     47: #include "sudo_auth.h"
                     48: 
                     49: /*
                     50:  * For a description of the AIX authentication API, see
                     51:  * http://publib16.boulder.ibm.com/doc_link/en_US/a_doc_lib/libs/basetrf1/authenticate.htm
                     52:  */
                     53: int
                     54: aixauth_verify(struct passwd *pw, char *prompt, sudo_auth *auth)
                     55: {
                     56:     char *pass, *message = NULL;
                     57:     int result = 1, reenter = 0;
                     58:     int rval = AUTH_SUCCESS;
                     59: 
                     60:     do {
                     61:        pass = auth_getpass(prompt, def_passwd_timeout * 60,
                     62:            SUDO_CONV_PROMPT_ECHO_OFF);
                     63:        if (pass == NULL)
                     64:            break;
                     65:        efree(message);
                     66:        message = NULL;
                     67:        result = authenticate(pw->pw_name, pass, &reenter, &message);
                     68:        zero_bytes(pass, strlen(pass));
                     69:        prompt = message;
                     70:     } while (reenter);
                     71: 
                     72:     if (result != 0) {
                     73:        /* Display error message, if any. */
                     74:        if (message != NULL) {
                     75:            struct sudo_conv_message msg;
                     76:            struct sudo_conv_reply repl;
                     77: 
                     78:            memset(&msg, 0, sizeof(msg));
                     79:            msg.msg_type = SUDO_CONV_ERROR_MSG;
                     80:            msg.msg = message;
                     81:            memset(&repl, 0, sizeof(repl));
                     82:            sudo_conv(1, &msg, &repl);
                     83:        }
                     84:        rval = pass ? AUTH_FAILURE : AUTH_INTR;
                     85:     }
                     86:     efree(message);
                     87:     return rval;
                     88: }
                     89: 
                     90: int
                     91: aixauth_cleanup(struct passwd *pw, sudo_auth *auth)
                     92: {
                     93:     /* Unset AUTHSTATE as it may not be correct for the runas user. */
                     94:     unsetenv("AUTHSTATE");
                     95: 
                     96:     return AUTH_SUCCESS;
                     97: }