2 * Unix SMB/Netbios implementation.
4 * RPC Pipe client / server routines for Dfs
5 * Copyright (C) Andrew Tridgell 1992-1997,
6 * Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
7 * Copyright (C) Shirish Kalele 2000.
8 * Copyright (C) Jeremy Allison 2001.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /* This is the implementation of the dfs pipe. */
30 extern pstring global_myname
;
32 #define MAX_MSDFS_JUNCTIONS 256
35 /* This function does not return a WERROR or NTSTATUS code but rather 1 if
36 dfs exists, or 0 otherwise. */
38 uint32
_dfs_exist(pipes_struct
*p
, DFS_Q_DFS_EXIST
*q_u
, DFS_R_DFS_EXIST
*r_u
)
46 WERROR
_dfs_add(pipes_struct
*p
, DFS_Q_DFS_ADD
* q_u
, DFS_R_DFS_ADD
*r_u
)
48 struct current_user user
;
49 struct junction_map jn
;
50 struct referral
* old_referral_list
= NULL
;
53 pstring dfspath
, servername
, sharename
;
56 get_current_user(&user
,p
);
59 DEBUG(10,("_dfs_add: uid != 0. Access denied.\n"));
60 return WERR_ACCESS_DENIED
;
63 unistr2_to_ascii(dfspath
, &q_u
->DfsEntryPath
, sizeof(dfspath
)-1);
64 unistr2_to_ascii(servername
, &q_u
->ServerName
, sizeof(servername
)-1);
65 unistr2_to_ascii(sharename
, &q_u
->ShareName
, sizeof(sharename
)-1);
67 DEBUG(5,("init_reply_dfs_add: Request to add %s -> %s\\%s.\n",
68 dfspath
, servername
, sharename
));
70 pstrcpy(altpath
, servername
);
71 pstrcat(altpath
, "\\");
72 pstrcat(altpath
, sharename
);
74 if(get_referred_path(dfspath
, &jn
, NULL
, NULL
))
77 jn
.referral_count
+= 1;
78 old_referral_list
= jn
.referral_list
;
81 jn
.referral_count
= 1;
83 jn
.referral_list
= (struct referral
*) talloc(p
->mem_ctx
, jn
.referral_count
84 * sizeof(struct referral
));
86 if(jn
.referral_list
== NULL
)
88 DEBUG(0,("init_reply_dfs_add: talloc failed for referral list!\n"));
89 return WERR_DFS_INTERNAL_ERROR
;
94 memcpy(jn
.referral_list
, old_referral_list
,
95 sizeof(struct referral
)*jn
.referral_count
-1);
96 SAFE_FREE(old_referral_list
);
99 jn
.referral_list
[jn
.referral_count
-1].proximity
= 0;
100 jn
.referral_list
[jn
.referral_count
-1].ttl
= REFERRAL_TTL
;
102 pstrcpy(jn
.referral_list
[jn
.referral_count
-1].alternate_path
, altpath
);
104 if(!create_msdfs_link(&jn
, exists
))
105 return WERR_DFS_CANT_CREATE_JUNCT
;
110 WERROR
_dfs_remove(pipes_struct
*p
, DFS_Q_DFS_REMOVE
*q_u
,
111 DFS_R_DFS_REMOVE
*r_u
)
113 struct current_user user
;
114 struct junction_map jn
;
117 pstring dfspath
, servername
, sharename
;
120 get_current_user(&user
,p
);
123 DEBUG(10,("_dfs_remove: uid != 0. Access denied.\n"));
124 return WERR_ACCESS_DENIED
;
127 unistr2_to_ascii(dfspath
, &q_u
->DfsEntryPath
, sizeof(dfspath
)-1);
128 if(q_u
->ptr_ServerName
)
129 unistr2_to_ascii(servername
, &q_u
->ServerName
, sizeof(servername
)-1);
131 if(q_u
->ptr_ShareName
)
132 unistr2_to_ascii(sharename
, &q_u
->ShareName
, sizeof(sharename
)-1);
134 if(q_u
->ptr_ServerName
&& q_u
->ptr_ShareName
)
136 pstrcpy(altpath
, servername
);
137 pstrcat(altpath
, "\\");
138 pstrcat(altpath
, sharename
);
142 DEBUG(5,("init_reply_dfs_remove: Request to remove %s -> %s\\%s.\n",
143 dfspath
, servername
, sharename
));
145 if(!get_referred_path(dfspath
, &jn
, NULL
, NULL
))
146 return WERR_DFS_NO_SUCH_VOL
;
148 /* if no server-share pair given, remove the msdfs link completely */
149 if(!q_u
->ptr_ServerName
&& !q_u
->ptr_ShareName
)
151 if(!remove_msdfs_link(&jn
))
152 return WERR_DFS_NO_SUCH_VOL
;
157 /* compare each referral in the list with the one to remove */
158 DEBUG(10,("altpath: .%s. refcnt: %d\n", altpath
, jn
.referral_count
));
159 for(i
=0;i
<jn
.referral_count
;i
++)
162 pstrcpy(refpath
,jn
.referral_list
[i
].alternate_path
);
163 trim_string(refpath
, "\\", "\\");
164 DEBUG(10,("_dfs_remove: refpath: .%s.\n", refpath
));
165 if(strequal(refpath
, altpath
))
167 *(jn
.referral_list
[i
].alternate_path
)='\0';
168 DEBUG(10,("_dfs_remove: Removal request matches referral %s\n",
174 return WERR_DFS_NO_SUCH_SHARE
;
176 /* Only one referral, remove it */
177 if(jn
.referral_count
== 1)
179 if(!remove_msdfs_link(&jn
))
180 return WERR_DFS_NO_SUCH_VOL
;
184 if(!create_msdfs_link(&jn
, True
))
185 return WERR_DFS_CANT_CREATE_JUNCT
;
192 static BOOL
init_reply_dfs_info_1(struct junction_map
* j
, DFS_INFO_1
* dfs1
, int num_j
)
198 dfs1
[i
].ptr_entrypath
= 1;
199 slprintf(str
, sizeof(pstring
)-1, "\\\\%s\\%s\\%s", global_myname
,
200 j
[i
].service_name
, j
[i
].volume_name
);
201 DEBUG(5,("init_reply_dfs_info_1: %d) initing entrypath: %s\n",i
,str
));
202 init_unistr2(&dfs1
[i
].entrypath
,str
,strlen(str
)+1);
207 static BOOL
init_reply_dfs_info_2(struct junction_map
* j
, DFS_INFO_2
* dfs2
, int num_j
)
213 dfs2
[i
].ptr_entrypath
= 1;
214 slprintf(str
, sizeof(pstring
)-1, "\\\\%s\\%s\\%s", global_myname
,
215 j
[i
].service_name
, j
[i
].volume_name
);
216 init_unistr2(&dfs2
[i
].entrypath
, str
, strlen(str
)+1);
217 dfs2
[i
].ptr_comment
= 0;
218 dfs2
[i
].state
= 1; /* set up state of dfs junction as OK */
219 dfs2
[i
].num_storages
= j
[i
].referral_count
;
224 static BOOL
init_reply_dfs_info_3(TALLOC_CTX
*ctx
, struct junction_map
* j
, DFS_INFO_3
* dfs3
, int num_j
)
230 dfs3
[i
].ptr_entrypath
= 1;
231 if (j
[i
].volume_name
[0] == '\0')
232 slprintf(str
, sizeof(pstring
)-1, "\\\\%s\\%s",
233 global_myname
, j
[i
].service_name
);
235 slprintf(str
, sizeof(pstring
)-1, "\\\\%s\\%s\\%s", global_myname
,
236 j
[i
].service_name
, j
[i
].volume_name
);
238 init_unistr2(&dfs3
[i
].entrypath
, str
, strlen(str
)+1);
239 dfs3
[i
].ptr_comment
= 1;
240 init_unistr2(&dfs3
[i
].comment
, "", 1);
242 dfs3
[i
].num_storages
= dfs3
[i
].num_storage_infos
= j
[i
].referral_count
;
243 dfs3
[i
].ptr_storages
= 1;
245 /* also enumerate the storages */
246 dfs3
[i
].storages
= (DFS_STORAGE_INFO
*) talloc(ctx
, j
[i
].referral_count
*
247 sizeof(DFS_STORAGE_INFO
));
248 if (!dfs3
[i
].storages
)
251 memset(dfs3
[i
].storages
, '\0', j
[i
].referral_count
* sizeof(DFS_STORAGE_INFO
));
253 for(ii
=0;ii
<j
[i
].referral_count
;ii
++)
257 DFS_STORAGE_INFO
* stor
= &(dfs3
[i
].storages
[ii
]);
258 struct referral
* ref
= &(j
[i
].referral_list
[ii
]);
260 pstrcpy(path
, ref
->alternate_path
);
261 trim_string(path
,"\\","");
262 p
= strrchr(path
,'\\');
265 DEBUG(4,("init_reply_dfs_info_3: invalid path: no \\ found in %s\n",path
));
269 DEBUG(5,("storage %d: %s.%s\n",ii
,path
,p
+1));
270 stor
->state
= 2; /* set all storages as ONLINE */
271 init_unistr2(&stor
->servername
, path
, strlen(path
)+1);
272 init_unistr2(&stor
->sharename
, p
+1, strlen(p
+1)+1);
273 stor
->ptr_servername
= stor
->ptr_sharename
= 1;
279 static WERROR
init_reply_dfs_ctr(TALLOC_CTX
*ctx
, uint32 level
,
280 DFS_INFO_CTR
* ctr
, struct junction_map
* jn
,
289 dfs1
= (DFS_INFO_1
*) talloc(ctx
, num_jn
* sizeof(DFS_INFO_1
));
292 init_reply_dfs_info_1(jn
, dfs1
, num_jn
);
293 ctr
->dfs
.info1
= dfs1
;
299 dfs2
= (DFS_INFO_2
*) talloc(ctx
, num_jn
* sizeof(DFS_INFO_2
));
302 init_reply_dfs_info_2(jn
, dfs2
, num_jn
);
303 ctr
->dfs
.info2
= dfs2
;
309 dfs3
= (DFS_INFO_3
*) talloc(ctx
, num_jn
* sizeof(DFS_INFO_3
));
312 init_reply_dfs_info_3(ctx
, jn
, dfs3
, num_jn
);
313 ctr
->dfs
.info3
= dfs3
;
317 return WERR_INVALID_PARAM
;
322 WERROR
_dfs_enum(pipes_struct
*p
, DFS_Q_DFS_ENUM
*q_u
, DFS_R_DFS_ENUM
*r_u
)
324 uint32 level
= q_u
->level
;
325 struct junction_map jn
[MAX_MSDFS_JUNCTIONS
];
328 num_jn
= enum_msdfs_links(jn
);
330 DEBUG(5,("make_reply_dfs_enum: %d junctions found in Dfs, doing level %d\n", num_jn
, level
));
332 r_u
->ptr_buffer
= level
;
333 r_u
->level
= r_u
->level2
= level
;
334 r_u
->ptr_num_entries
= r_u
->ptr_num_entries2
= 1;
335 r_u
->num_entries
= r_u
->num_entries2
= num_jn
;
336 r_u
->reshnd
.ptr_hnd
= 1;
337 r_u
->reshnd
.handle
= num_jn
;
339 r_u
->ctr
= (DFS_INFO_CTR
*)talloc(p
->mem_ctx
, sizeof(DFS_INFO_CTR
));
342 ZERO_STRUCTP(r_u
->ctr
);
343 r_u
->ctr
->switch_value
= level
;
344 r_u
->ctr
->num_entries
= num_jn
;
345 r_u
->ctr
->ptr_dfs_ctr
= 1;
347 r_u
->status
= init_reply_dfs_ctr(p
->mem_ctx
, level
, r_u
->ctr
, jn
, num_jn
);
352 WERROR
_dfs_get_info(pipes_struct
*p
, DFS_Q_DFS_GET_INFO
*q_u
,
353 DFS_R_DFS_GET_INFO
*r_u
)
355 UNISTR2
* uni_path
= &q_u
->uni_path
;
356 uint32 level
= q_u
->level
;
358 struct junction_map jn
;
360 unistr2_to_ascii(path
, uni_path
, sizeof(path
)-1);
361 if(!create_junction(path
, &jn
))
362 return WERR_DFS_NO_SUCH_SERVER
;
364 return WERR_DFS_NO_SUCH_VOL
;
365 if(!get_referred_path(path
, &jn
, NULL
, NULL
))
369 r_u
->status
= init_reply_dfs_ctr(p
->mem_ctx
, level
, &r_u
->ctr
, &jn
, 1);
374 void dfs_dummy1(void) {;} /* So some compilers don't complain. */