summaryrefslogtreecommitdiff
path: root/source3/groupdb/groupfile.c
blob: ba9027b4f6156526592873cf007f226571f0e56b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
/*
 * Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
 * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 675
 * Mass Ave, Cambridge, MA 02139, USA.
 */

#include "includes.h"

#ifdef USE_SMBPASS_DB

static int gp_file_lock_depth = 0;
extern int DEBUGLEVEL;

static char s_readbuf[1024];

/***************************************************************
 Start to enumerate the grppasswd list. Returns a void pointer
 to ensure no modification outside this module.
****************************************************************/

static void *startgrpfilepwent(BOOL update)
{
	return startfilepwent(lp_smb_group_file(),
	                      s_readbuf, sizeof(s_readbuf),
	                      &gp_file_lock_depth, update);
}

/***************************************************************
 End enumeration of the grppasswd list.
****************************************************************/

static void endgrpfilepwent(void *vp)
{
	endfilepwent(vp, &gp_file_lock_depth);
}

/*************************************************************************
 Return the current position in the grppasswd list as an SMB_BIG_UINT.
 This must be treated as an opaque token.
*************************************************************************/
static SMB_BIG_UINT getgrpfilepwpos(void *vp)
{
	return getfilepwpos(vp);
}

/*************************************************************************
 Set the current position in the grppasswd list from an SMB_BIG_UINT.
 This must be treated as an opaque token.
*************************************************************************/
static BOOL setgrpfilepwpos(void *vp, SMB_BIG_UINT tok)
{
	return setfilepwpos(vp, tok);
}

static BOOL make_group_line(char *p, int max_len,
				DOMAIN_GRP *grp,
				DOMAIN_GRP_MEMBER **mem, int *num_mem)
{
	int i;
	int len;
	len = slprintf(p, max_len-1, "%s:%s:%d:", grp->name, grp->comment, grp->rid);

	if (len == -1)
	{
		DEBUG(0,("make_group_line: cannot create entry\n"));
		return False;
	}

	p += len;
	max_len -= len;

	if (mem == NULL || num_mem == NULL)
	{
		return True;
	}

	for (i = 0; i < (*num_mem); i++)
	{
		len = strlen((*mem)[i].name);
		p = safe_strcpy(p, (*mem)[i].name, max_len); 

		if (p == NULL)
		{
			DEBUG(0, ("make_group_line: out of space for groups!\n"));
			return False;
		}

		max_len -= len;

		if (i != (*num_mem)-1)
		{
			*p = ',';
			p++;
			max_len--;
		}
	}

	return True;
}

/*************************************************************************
 Routine to return the next entry in the smbdomaingroup list.
 *************************************************************************/
static char *get_group_members(char *p, int *num_mem, DOMAIN_GRP_MEMBER **members)
{
	fstring name;

	if (num_mem == NULL || members == NULL)
	{
		return NULL;
	}

	(*num_mem) = 0;
	(*members) = NULL;

	while (next_token(&p, name, ",", sizeof(fstring)))
	{
		DOMAIN_GRP_MEMBER *mbrs;
		
		mbrs = Realloc((*members), ((*num_mem)+1) * sizeof(DOMAIN_GRP_MEMBER));
		if (mbrs == NULL)
		{
			return NULL;
		}
		else (*members) = mbrs;
		fstrcpy((*members)[(*num_mem)].name, name);
		(*members)[(*num_mem)].attr = 0x07;
		(*num_mem)++;
	}
	return p;
}

/*************************************************************************
 Routine to return the next entry in the smbdomaingroup list.
 *************************************************************************/
static DOMAIN_GRP *getgrpfilepwent(void *vp, DOMAIN_GRP_MEMBER **mem, int *num_mem)
{
	/* Static buffers we will return. */
	static DOMAIN_GRP gp_buf;

	int gidval;

	pstring linebuf;
	char  *p;
	size_t            linebuf_len;

	gpdb_init_grp(&gp_buf);

	/*
	 * Scan the file, a line at a time and check if the name matches.
	 */
	while ((linebuf_len = getfileline(vp, linebuf, sizeof(linebuf))) > 0)
	{
		/* get group name */

		p = strncpyn(gp_buf.name, linebuf, sizeof(gp_buf.name), ':');
		if (p == NULL)
		{
			DEBUG(0, ("getgrpfilepwent: malformed group entry (no :)\n"));
			continue;
		}

		/* Go past ':' */
		p++;

		/* get group comment */

		p = strncpyn(gp_buf.comment, p, sizeof(gp_buf.comment), ':');
		if (p == NULL)
		{
			DEBUG(0, ("getgrpfilepwent: malformed group entry (no :)\n"));
			continue;
		}

		/* Go past ':' */
		p++;

		/* Get group gid. */

		p = Atoic(p, &gidval, ":");

		if (p == NULL)
		{
			DEBUG(0, ("getgrpfilepwent: malformed group entry (no : after uid)\n"));
			continue;
		}

		/* Go past ':' */
		p++;

		/* now get the user's groups.  there are a maximum of 32 */

		if (mem != NULL && num_mem != NULL)
		{
			(*mem) = NULL;
			(*num_mem) = 0;

			p = get_group_members(p, num_mem, mem);
			if (p == NULL)
			{
				DEBUG(0, ("getgrpfilepwent: malformed group entry (no : after members)\n"));
			}
		}

		/* ok, set up the static data structure and return it */

		gp_buf.rid     = pwdb_gid_to_group_rid((gid_t)gidval);
		gp_buf.attr    = 0x07;

		make_group_line(linebuf, sizeof(linebuf), &gp_buf, mem, num_mem);
		DEBUG(10,("line: '%s'\n", linebuf));

		return &gp_buf;
	}

	DEBUG(5,("getgrpfilepwent: end of file reached.\n"));
	return NULL;
}

/************************************************************************
 Routine to add an entry to the grppasswd file.
*************************************************************************/

static BOOL add_grpfilegrp_entry(DOMAIN_GRP *newgrp)
{
	DEBUG(0, ("add_grpfilegrp_entry: NOT IMPLEMENTED\n"));
	return False;
}

/************************************************************************
 Routine to search the grppasswd file for an entry matching the groupname.
 and then modify its group entry. We can't use the startgrppwent()/
 getgrppwent()/endgrppwent() interfaces here as we depend on looking
 in the actual file to decide how much room we have to write data.
 override = False, normal
 override = True, override XXXXXXXX'd out group or NO PASS
************************************************************************/

static BOOL mod_grpfilegrp_entry(DOMAIN_GRP* grp)
{
	DEBUG(0, ("mod_grpfilegrp_entry: NOT IMPLEMENTED\n"));
	return False;
}


static struct groupdb_ops file_ops =
{
	startgrpfilepwent,
	endgrpfilepwent,
	getgrpfilepwpos,
	setgrpfilepwpos,

	iterate_getgroupnam,          /* In groupdb.c */
	iterate_getgroupgid,          /* In groupdb.c */
	iterate_getgrouprid,          /* In groupdb.c */
	getgrpfilepwent,

	add_grpfilegrp_entry,
	mod_grpfilegrp_entry,

	iterate_getusergroupsnam      /* in groupdb.c */
};

struct groupdb_ops *file_initialise_group_db(void)
{    
	return &file_ops;
}

#else
 /* Do *NOT* make this function static. It breaks the compile on gcc. JRA */
 void grppass_dummy_function(void) { } /* stop some compilers complaining */
#endif /* USE_SMBPASS_DB */