1149749Sdes/* 2149749Sdes * Copyright (c) 2005 The SCO Group. All rights reserved. 3149749Sdes * Copyright (c) 2005 Tim Rice. All rights reserved. 4149749Sdes * 5149749Sdes * Redistribution and use in source and binary forms, with or without 6149749Sdes * modification, are permitted provided that the following conditions 7149749Sdes * are met: 8149749Sdes * 1. Redistributions of source code must retain the above copyright 9149749Sdes * notice, this list of conditions and the following disclaimer. 10149749Sdes * 2. Redistributions in binary form must reproduce the above copyright 11149749Sdes * notice, this list of conditions and the following disclaimer in the 12149749Sdes * documentation and/or other materials provided with the distribution. 13149749Sdes * 14149749Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15149749Sdes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16149749Sdes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17149749Sdes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18149749Sdes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19149749Sdes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20149749Sdes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21149749Sdes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22149749Sdes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23149749Sdes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24149749Sdes */ 25149749Sdes 26149749Sdes#include "includes.h" 27149749Sdes 28192595Sdes#if defined(HAVE_LIBIAF) && !defined(HAVE_SECUREWARE) 29162852Sdes#include <sys/types.h> 30149749Sdes#ifdef HAVE_CRYPT_H 31162852Sdes# include <crypt.h> 32149749Sdes#endif 33162852Sdes#include <pwd.h> 34162852Sdes#include <stdarg.h> 35162852Sdes#include <stdlib.h> 36162852Sdes#include <stdio.h> 37162852Sdes#include <string.h> 38162852Sdes 39162852Sdes#include "xmalloc.h" 40149749Sdes#include "packet.h" 41149749Sdes#include "buffer.h" 42215116Sdes#include "key.h" 43162852Sdes#include "auth-options.h" 44149749Sdes#include "log.h" 45294328Sdes#include "misc.h" /* servconf.h needs misc.h for struct ForwardOptions */ 46149749Sdes#include "servconf.h" 47162852Sdes#include "hostfile.h" 48149749Sdes#include "auth.h" 49162852Sdes#include "ssh.h" 50149749Sdes 51149749Sdesint nischeck(char *); 52149749Sdes 53149749Sdesint 54149749Sdessys_auth_passwd(Authctxt *authctxt, const char *password) 55149749Sdes{ 56149749Sdes struct passwd *pw = authctxt->pw; 57149749Sdes char *salt; 58149749Sdes int result; 59149749Sdes 60149749Sdes /* Just use the supplied fake password if authctxt is invalid */ 61149749Sdes char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd; 62149749Sdes 63149749Sdes /* Check for users with no password. */ 64149749Sdes if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0) 65149749Sdes return (1); 66149749Sdes 67149749Sdes /* Encrypt the candidate password using the proper salt. */ 68149749Sdes salt = (pw_password[0] && pw_password[1]) ? pw_password : "xx"; 69149749Sdes 70149749Sdes /* 71149749Sdes * Authentication is accepted if the encrypted passwords 72149749Sdes * are identical. 73149749Sdes */ 74157016Sdes#ifdef UNIXWARE_LONG_PASSWORDS 75157016Sdes if (!nischeck(pw->pw_name)) { 76157016Sdes result = ((strcmp(bigcrypt(password, salt), pw_password) == 0) 77157016Sdes || (strcmp(osr5bigcrypt(password, salt), pw_password) == 0)); 78157016Sdes } 79157016Sdes else 80157016Sdes#endif /* UNIXWARE_LONG_PASSWORDS */ 81157016Sdes result = (strcmp(xcrypt(password, salt), pw_password) == 0); 82149749Sdes 83181111Sdes#ifdef USE_LIBIAF 84149749Sdes if (authctxt->valid) 85149749Sdes free(pw_password); 86157016Sdes#endif 87149749Sdes return(result); 88149749Sdes} 89149749Sdes 90149749Sdes#ifdef UNIXWARE_LONG_PASSWORDS 91149749Sdesint 92149749Sdesnischeck(char *namep) 93149749Sdes{ 94149749Sdes char password_file[] = "/etc/passwd"; 95149749Sdes FILE *fd; 96149749Sdes struct passwd *ent = NULL; 97149749Sdes 98149749Sdes if ((fd = fopen (password_file, "r")) == NULL) { 99149749Sdes /* 100149749Sdes * If the passwd file has dissapeared we are in a bad state. 101149749Sdes * However, returning 0 will send us back through the 102149749Sdes * authentication scheme that has checked the ia database for 103149749Sdes * passwords earlier. 104149749Sdes */ 105149749Sdes return(0); 106149749Sdes } 107149749Sdes 108149749Sdes /* 109149749Sdes * fgetpwent() only reads from password file, so we know for certain 110149749Sdes * that the user is local. 111149749Sdes */ 112149749Sdes while (ent = fgetpwent(fd)) { 113149749Sdes if (strcmp (ent->pw_name, namep) == 0) { 114149749Sdes /* Local user */ 115149749Sdes fclose (fd); 116149749Sdes return(0); 117149749Sdes } 118149749Sdes } 119149749Sdes 120149749Sdes fclose (fd); 121149749Sdes return (1); 122149749Sdes} 123149749Sdes 124149749Sdes#endif /* UNIXWARE_LONG_PASSWORDS */ 125149749Sdes 126149749Sdes/* 127149749Sdes NOTE: ia_get_logpwd() allocates memory for arg 2 128149749Sdes functions that call shadow_pw() will need to free 129149749Sdes */ 130149749Sdes 131181111Sdes#ifdef USE_LIBIAF 132149749Sdeschar * 133149749Sdesget_iaf_password(struct passwd *pw) 134149749Sdes{ 135149749Sdes char *pw_password = NULL; 136149749Sdes 137149749Sdes uinfo_t uinfo; 138149749Sdes if (!ia_openinfo(pw->pw_name,&uinfo)) { 139149749Sdes ia_get_logpwd(uinfo, &pw_password); 140149749Sdes if (pw_password == NULL) 141149749Sdes fatal("ia_get_logpwd: Unable to get the shadow passwd"); 142149749Sdes ia_closeinfo(uinfo); 143149749Sdes return pw_password; 144149749Sdes } 145149749Sdes else 146149749Sdes fatal("ia_openinfo: Unable to open the shadow passwd file"); 147149749Sdes} 148181111Sdes#endif /* USE_LIBIAF */ 149192595Sdes#endif /* HAVE_LIBIAF and not HAVE_SECUREWARE */ 150149749Sdes 151