nsswitch/pam_winbind.h

   1 /*
   2  * Copyright (c) Andrew Tridgell  <tridge@samba.org>   2000
   3  * Copyright (c) Tim Potter       <tpot@samba.org>     2000
   4  * Copyright (c) Andrew Bartlettt <abartlet@samba.org> 2002
   5  * Copyright (c) Guenther Deschner <gd@samba.org>      2005-2008
   6  * Copyright (c) Jan Rêkorajski 1999.
   7  * Copyright (c) Andrew G. Morgan 1996-8.
   8  * Copyright (c) Alex O. Yuriev, 1996.
   9  * Copyright (c) Cristian Gafton 1996.
  10  * Copyright (C) Elliot Lee <sopwith@redhat.com> 1996, Red Hat Software.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, and the entire permission notice in its entirety,
  17  *    including the disclaimer of warranties.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. The name of the author may not be used to endorse or promote
  22  *    products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * ALTERNATIVELY, this product may be distributed under the terms of
  26  * the GNU Public License, in which case the provisions of the GPL are
  27  * required INSTEAD OF the above restrictions.  (This clause is
  28  * necessary due to a potential bad interaction between the GPL and
  29  * the restrictions contained in a BSD-style copyright.)
  30  *
  31  * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED
  32  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  33  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  34  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  35  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  36  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  37  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  40  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  41  * OF THE POSSIBILITY OF SUCH DAMAGE.
  42  */
  43
  44 /* pam_winbind header file
  45    (Solaris needs some macros from Linux for common PAM code)
  46
  47    Shirish Kalele 2000
  48 */
  49
  50 #ifndef _NSSWITCH_PAM_WINBIND_H_
  51 #define _NSSWITCH_PAM_WINBIND_H_
  52
  53 #include "../lib/replace/replace.h"
  54 #include "system/syslog.h"
  55 #include "system/time.h"
  56 #include <talloc.h>
  57 #include "libwbclient/wbclient.h"
  58
  59 #define MODULE_NAME "pam_winbind"
  60 #define PAM_SM_AUTH
  61 #define PAM_SM_ACCOUNT
  62 #define PAM_SM_PASSWORD
  63 #define PAM_SM_SESSION
  64
  65 #ifndef PAM_WINBIND_CONFIG_FILE
  66 #define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
  67 #endif
  68
  69 #include <iniparser.h>
  70
  71 #ifdef HAVE_LIBINTL_H
  72 #include <libintl.h>
  73 #endif
  74
  75 #if defined(LINUX)
  76
  77 /* newer versions of PAM have this in _pam_compat.h */
  78 #ifndef PAM_AUTHTOK_RECOVERY_ERR
  79 #define PAM_AUTHTOK_RECOVERY_ERR PAM_AUTHTOK_RECOVER_ERR
  80 #endif
  81
  82 #else /* !LINUX */
  83
  84 /* Solaris always uses dynamic pam modules */
  85 #define PAM_EXTERN extern
  86 #if defined(HAVE_SECURITY_PAM_APPL_H)
  87 #include <security/pam_appl.h>
  88 #elif defined(HAVE_PAM_PAM_APPL_H)
  89 #include <pam/pam_appl.h>
  90 #endif
  91
  92 #ifndef PAM_AUTHTOK_RECOVER_ERR
  93 #define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
  94 #endif
  95
  96 #endif /* defined(SUNOS5) || defined(SUNOS4) || defined(HPUX) || defined(FREEBSD) || defined(AIX) */
  97
  98 #if defined(HAVE_SECURITY_PAM_MODULES_H)
  99 #include <security/pam_modules.h>
 100 #elif defined(HAVE_PAM_PAM_MODULES_H)
 101 #include <pam/pam_modules.h>
 102 #endif
 103
 104 #if defined(HAVE_SECURITY__PAM_MACROS_H)
 105 #include <security/_pam_macros.h>
 106 #elif defined(HAVE_PAM__PAM_MACROS_H)
 107 #include <pam/_pam_macros.h>
 108 #else
 109 /* Define required macros from (Linux PAM 0.68) security/_pam_macros.h */
 110 #define _pam_drop_reply(/* struct pam_response * */ reply, /* int */ replies) \
 111 do {                                              \
 112     int reply_i;                                  \
 113                                                   \
 114     for (reply_i=0; reply_i<replies; ++reply_i) { \
 115         if (reply[reply_i].resp) {                \
 116             _pam_overwrite(reply[reply_i].resp);  \
 117             free(reply[reply_i].resp);            \
 118         }                                         \
 119     }                                             \
 120     if (reply)                                    \
 121         free(reply);                              \
 122 } while (0)
 123
 124 #define _pam_overwrite(x)        \
 125 do {                             \
 126      register char *__xx__;      \
 127      if ((__xx__=(x)))           \
 128           while (*__xx__)        \
 129                *__xx__++ = '\0'; \
 130 } while (0)
 131
 132 /*
 133  * Don't just free it, forget it too.
 134  */
 135
 136 #define _pam_drop(X) SAFE_FREE(X)
 137
 138 #define  x_strdup(s)  ( (s) ? strdup(s):NULL )
 139 #endif /* HAVE_SECURITY__PAM_MACROS_H */
 140
 141 #ifdef HAVE_SECURITY_PAM_EXT_H
 142 #include <security/pam_ext.h>
 143 #endif
 144
 145 #define WINBIND_DEBUG_ARG               0x00000001
 146 #define WINBIND_USE_AUTHTOK_ARG         0x00000002
 147 #define WINBIND_UNKNOWN_OK_ARG          0x00000004
 148 #define WINBIND_TRY_FIRST_PASS_ARG      0x00000008
 149 #define WINBIND_USE_FIRST_PASS_ARG      0x00000010
 150 #define WINBIND__OLD_PASSWORD           0x00000020
 151 #define WINBIND_REQUIRED_MEMBERSHIP     0x00000040
 152 #define WINBIND_KRB5_AUTH               0x00000080
 153 #define WINBIND_KRB5_CCACHE_TYPE        0x00000100
 154 #define WINBIND_CACHED_LOGIN            0x00000200
 155 #define WINBIND_CONFIG_FILE             0x00000400
 156 #define WINBIND_SILENT                  0x00000800
 157 #define WINBIND_DEBUG_STATE             0x00001000
 158 #define WINBIND_WARN_PWD_EXPIRE         0x00002000
 159 #define WINBIND_MKHOMEDIR               0x00004000
 160
 161 #if defined(HAVE_GETTEXT) && !defined(__LCLINT__)
 162 #define _(string) dgettext(MODULE_NAME, string)
 163 #else
 164 #define _(string) string
 165 #endif
 166
 167 #define N_(string) string
 168
 169 /*
 170  * here is the string to inform the user that the new passwords they
 171  * typed were not the same.
 172  */
 173
 174 #define MISTYPED_PASS _("Sorry, passwords do not match")
 175
 176 #define on(x, y) (x & y)
 177 #define off(x, y) (!(x & y))
 178
 179 #define PAM_WINBIND_NEW_AUTHTOK_REQD "PAM_WINBIND_NEW_AUTHTOK_REQD"
 180 #define PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH "PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH"
 181 #define PAM_WINBIND_HOMEDIR "PAM_WINBIND_HOMEDIR"
 182 #define PAM_WINBIND_LOGONSCRIPT "PAM_WINBIND_LOGONSCRIPT"
 183 #define PAM_WINBIND_LOGONSERVER "PAM_WINBIND_LOGONSERVER"
 184 #define PAM_WINBIND_PROFILEPATH "PAM_WINBIND_PROFILEPATH"
 185 #define PAM_WINBIND_PWD_LAST_SET "PAM_WINBIND_PWD_LAST_SET"
 186
 187 #define SECONDS_PER_DAY 86400
 188
 189 #define DEFAULT_DAYS_TO_WARN_BEFORE_PWD_EXPIRES 14
 190
 191 #include "winbind_client.h"
 192
 193 #define PAM_WB_REMARK_DIRECT(c,x)\
 194 {\
 195         const char *error_string = NULL; \
 196         error_string = _get_ntstatus_error_string(x);\
 197         if (error_string != NULL) {\
 198                 _make_remark(c, PAM_ERROR_MSG, error_string);\
 199         } else {\
 200                 _make_remark(c, PAM_ERROR_MSG, x);\
 201         };\
 202 };
 203
 204 #define LOGON_KRB5_FAIL_CLOCK_SKEW      0x02000000
 205
 206 #define PAM_WB_CACHED_LOGON(x) (x & WBC_AUTH_USER_INFO_CACHED_ACCOUNT)
 207 #define PAM_WB_KRB5_CLOCK_SKEW(x) (x & LOGON_KRB5_FAIL_CLOCK_SKEW)
 208 #define PAM_WB_GRACE_LOGON(x)  ((WBC_AUTH_USER_INFO_CACHED_ACCOUNT|WBC_AUTH_USER_INFO_GRACE_LOGON) == ( x & (WBC_AUTH_USER_INFO_CACHED_ACCOUNT|WBC_AUTH_USER_INFO_GRACE_LOGON)))
 209
 210 struct pwb_context {
 211         pam_handle_t *pamh;
 212         int flags;
 213         int argc;
 214         const char **argv;
 215         dictionary *dict;
 216         uint32_t ctrl;
 217 };
 218
 219 #ifndef TALLOC_FREE
 220 #define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
 221 #endif
 222 #define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
 223 #define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
 224
 225 #endif /* _NSSWITCH_PAM_WINBIND_H_ */