1/* pam_winbind header file
2   (Solaris needs some macros from Linux for common PAM code)
3
4   Shirish Kalele 2000
5*/
6
7#include "../lib/replace/replace.h"
8#include "system/syslog.h"
9#include "system/time.h"
10#include <talloc.h>
11#include "libwbclient/wbclient.h"
12#include "localedir.h"
13
14#define MODULE_NAME "pam_winbind"
15#define PAM_SM_AUTH
16#define PAM_SM_ACCOUNT
17#define PAM_SM_PASSWORD
18#define PAM_SM_SESSION
19
20#ifndef PAM_WINBIND_CONFIG_FILE
21#define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
22#endif
23
24#include <iniparser.h>
25
26#ifdef HAVE_LIBINTL_H
27#include <libintl.h>
28#endif
29
30#if defined(LINUX)
31
32/* newer versions of PAM have this in _pam_compat.h */
33#ifndef PAM_AUTHTOK_RECOVERY_ERR
34#define PAM_AUTHTOK_RECOVERY_ERR PAM_AUTHTOK_RECOVER_ERR
35#endif
36
37#else /* !LINUX */
38
39/* Solaris always uses dynamic pam modules */
40#define PAM_EXTERN extern
41#if defined(HAVE_SECURITY_PAM_APPL_H)
42#include <security/pam_appl.h>
43#elif defined(HAVE_PAM_PAM_APPL_H)
44#include <pam/pam_appl.h>
45#endif
46
47#ifndef PAM_AUTHTOK_RECOVER_ERR
48#define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
49#endif
50
51#endif /* defined(SUNOS5) || defined(SUNOS4) || defined(HPUX) || defined(FREEBSD) || defined(AIX) */
52
53#if defined(HAVE_SECURITY_PAM_MODULES_H)
54#include <security/pam_modules.h>
55#elif defined(HAVE_PAM_PAM_MODULES_H)
56#include <pam/pam_modules.h>
57#endif
58
59#if defined(HAVE_SECURITY__PAM_MACROS_H)
60#include <security/_pam_macros.h>
61#elif defined(HAVE_PAM__PAM_MACROS_H)
62#include <pam/_pam_macros.h>
63#else
64/* Define required macros from (Linux PAM 0.68) security/_pam_macros.h */
65#define _pam_drop_reply(/* struct pam_response * */ reply, /* int */ replies) \
66do {                                              \
67    int reply_i;                                  \
68                                                  \
69    for (reply_i=0; reply_i<replies; ++reply_i) { \
70        if (reply[reply_i].resp) {                \
71            _pam_overwrite(reply[reply_i].resp);  \
72            free(reply[reply_i].resp);            \
73        }                                         \
74    }                                             \
75    if (reply)                                    \
76        free(reply);                              \
77} while (0)
78
79#define _pam_overwrite(x)        \
80do {                             \
81     register char *__xx__;      \
82     if ((__xx__=(x)))           \
83          while (*__xx__)        \
84               *__xx__++ = '\0'; \
85} while (0)
86
87/*
88 * Don't just free it, forget it too.
89 */
90
91#define _pam_drop(X) SAFE_FREE(X)
92
93#define  x_strdup(s)  ( (s) ? strdup(s):NULL )
94#endif /* HAVE_SECURITY__PAM_MACROS_H */
95
96#ifdef HAVE_SECURITY_PAM_EXT_H
97#include <security/pam_ext.h>
98#endif
99
100#define WINBIND_DEBUG_ARG		0x00000001
101#define WINBIND_USE_AUTHTOK_ARG		0x00000002
102#define WINBIND_UNKNOWN_OK_ARG		0x00000004
103#define WINBIND_TRY_FIRST_PASS_ARG	0x00000008
104#define WINBIND_USE_FIRST_PASS_ARG	0x00000010
105#define WINBIND__OLD_PASSWORD		0x00000020
106#define WINBIND_REQUIRED_MEMBERSHIP	0x00000040
107#define WINBIND_KRB5_AUTH		0x00000080
108#define WINBIND_KRB5_CCACHE_TYPE	0x00000100
109#define WINBIND_CACHED_LOGIN		0x00000200
110#define WINBIND_CONFIG_FILE		0x00000400
111#define WINBIND_SILENT			0x00000800
112#define WINBIND_DEBUG_STATE		0x00001000
113#define WINBIND_WARN_PWD_EXPIRE		0x00002000
114#define WINBIND_MKHOMEDIR		0x00004000
115
116#if defined(HAVE_GETTEXT) && !defined(__LCLINT__)
117#define _(string) dgettext(MODULE_NAME, string)
118#else
119#define _(string) string
120#endif
121
122#define N_(string) string
123
124/*
125 * here is the string to inform the user that the new passwords they
126 * typed were not the same.
127 */
128
129#define MISTYPED_PASS _("Sorry, passwords do not match")
130
131#define on(x, y) (x & y)
132#define off(x, y) (!(x & y))
133
134#define PAM_WINBIND_NEW_AUTHTOK_REQD "PAM_WINBIND_NEW_AUTHTOK_REQD"
135#define PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH "PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH"
136#define PAM_WINBIND_HOMEDIR "PAM_WINBIND_HOMEDIR"
137#define PAM_WINBIND_LOGONSCRIPT "PAM_WINBIND_LOGONSCRIPT"
138#define PAM_WINBIND_LOGONSERVER "PAM_WINBIND_LOGONSERVER"
139#define PAM_WINBIND_PROFILEPATH "PAM_WINBIND_PROFILEPATH"
140#define PAM_WINBIND_PWD_LAST_SET "PAM_WINBIND_PWD_LAST_SET"
141
142#define SECONDS_PER_DAY 86400
143
144#define DEFAULT_DAYS_TO_WARN_BEFORE_PWD_EXPIRES 14
145
146#include "winbind_client.h"
147
148#define PAM_WB_REMARK_DIRECT(c,x)\
149{\
150	const char *error_string = NULL; \
151	error_string = _get_ntstatus_error_string(x);\
152	if (error_string != NULL) {\
153		_make_remark(c, PAM_ERROR_MSG, error_string);\
154	} else {\
155		_make_remark(c, PAM_ERROR_MSG, x);\
156	};\
157};
158
159#define LOGON_KRB5_FAIL_CLOCK_SKEW	0x02000000
160
161#define PAM_WB_CACHED_LOGON(x) (x & WBC_AUTH_USER_INFO_CACHED_ACCOUNT)
162#define PAM_WB_KRB5_CLOCK_SKEW(x) (x & LOGON_KRB5_FAIL_CLOCK_SKEW)
163#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)))
164
165struct pwb_context {
166	pam_handle_t *pamh;
167	int flags;
168	int argc;
169	const char **argv;
170	dictionary *dict;
171	uint32_t ctrl;
172};
173
174#ifndef TALLOC_FREE
175#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
176#endif
177#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
178#define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
179