2 Unix SMB/Netbios implementation.
3 SMB client library implementation
4 Copyright (C) Andrew Tridgell 1998
5 Copyright (C) Richard Sharpe 2000, 2002
6 Copyright (C) John Terpstra 2000
7 Copyright (C) Tom Jansen (Ninja ISD) 2002
8 Copyright (C) Derrell Lipman 2003-2008
9 Copyright (C) Jeremy Allison 2007, 2008
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "libsmbclient.h"
27 #include "libsmb_internal.h"
30 /* Used by urldecode_talloc() */
32 hex2int( unsigned int _char )
34 if ( _char >= 'A' && _char <='F')
35 return _char - 'A' + 10;
36 if ( _char >= 'a' && _char <='f')
37 return _char - 'a' + 10;
38 if ( _char >= '0' && _char <='9')
45 * and urldecode_talloc() (internal fn.)
47 * Convert strings of %xx to their single character equivalent. Each 'x' must
48 * be a valid hexadecimal digit, or that % sequence is left undecoded.
50 * dest may, but need not be, the same pointer as src.
52 * Returns the number of % sequences which could not be converted due to lack
53 * of two following hexadecimal digits.
56 urldecode_talloc(TALLOC_CTX *ctx, char **pp_dest, const char *src)
58 int old_length = strlen(src);
64 if (old_length == 0) {
69 for (i = 0; i < old_length; ) {
70 unsigned char character = src[i++];
72 if (character == '%') {
73 int a = i+1 < old_length ? hex2int(src[i]) : -1;
74 int b = i+1 < old_length ? hex2int(src[i+1]) : -1;
76 /* Replace valid sequence */
77 if (a != -1 && b != -1) {
78 /* Replace valid %xx sequence with %dd */
79 character = (a * 16) + b;
80 if (character == '\0') {
81 break; /* Stop at %00 */
91 dest = TALLOC_ARRAY(ctx, char, newlen);
97 for (p = dest, i = 0; i < old_length; ) {
98 unsigned char character = src[i++];
100 if (character == '%') {
101 int a = i+1 < old_length ? hex2int(src[i]) : -1;
102 int b = i+1 < old_length ? hex2int(src[i+1]) : -1;
104 /* Replace valid sequence */
105 if (a != -1 && b != -1) {
106 /* Replace valid %xx sequence with %dd */
107 character = (a * 16) + b;
108 if (character == '\0') {
109 break; /* Stop at %00 */
125 smbc_urldecode(char *dest,
129 TALLOC_CTX *frame = talloc_stackframe();
131 int ret = urldecode_talloc(frame, &pdest, src);
134 strlcpy(dest, pdest, max_dest_len);
143 * Convert any characters not specifically allowed in a URL into their %xx
146 * Returns the remaining buffer length.
149 smbc_urlencode(char *dest,
153 char hex[] = "0123456789ABCDEF";
155 for (; *src != '\0' && max_dest_len >= 3; src++) {
167 *dest++ = hex[(*src >> 4) & 0x0f];
168 *dest++ = hex[*src & 0x0f];
183 * Function to parse a path and turn it into components
185 * The general format of an SMB URI is explain in Christopher Hertel's CIFS
186 * book, at http://ubiqx.org/cifs/Appendix-D.html. We accept a subset of the
187 * general format ("smb:" only; we do not look for "cifs:").
191 * smb://[[[domain;]user[:password]@]server[/share[/path[/file]]]][?options]
195 * smb:// Show all workgroups.
197 * The method of locating the list of workgroups varies
198 * depending upon the setting of the context variable
199 * context->options.browse_max_lmb_count. This value
200 * determines the maximum number of local master browsers to
201 * query for the list of workgroups. In order to ensure that
202 * a complete list of workgroups is obtained, all master
203 * browsers must be queried, but if there are many
204 * workgroups, the time spent querying can begin to add up.
205 * For small networks (not many workgroups), it is suggested
206 * that this variable be set to 0, indicating query all local
207 * master browsers. When the network has many workgroups, a
208 * reasonable setting for this variable might be around 3.
210 * smb://name/ if name<1D> or name<1B> exists, list servers in
211 * workgroup, else, if name<20> exists, list all shares
214 * If "options" are provided, this function returns the entire option list as a
215 * string, for later parsing by the caller. Note that currently, no options
219 static const char *smbc_prefix = "smb:";
222 SMBC_parse_path(TALLOC_CTX *ctx,
238 /* Ensure these returns are at least valid pointers. */
239 *pp_server = talloc_strdup(ctx, "");
240 *pp_share = talloc_strdup(ctx, "");
241 *pp_path = talloc_strdup(ctx, "");
242 *pp_user = talloc_strdup(ctx, "");
243 *pp_password = talloc_strdup(ctx, "");
245 if (!*pp_server || !*pp_share || !*pp_path ||
246 !*pp_user || !*pp_password) {
251 * Assume we wont find an authentication domain to parse, so default
252 * to the workgroup in the provided context.
254 if (pp_workgroup != NULL) {
256 talloc_strdup(ctx, smbc_getWorkgroup(context));
260 *pp_options = talloc_strdup(ctx, "");
262 s = talloc_strdup(ctx, fname);
264 /* see if it has the right prefix */
265 len = strlen(smbc_prefix);
266 if (strncmp(s,smbc_prefix,len) || (s[len] != '/' && s[len] != 0)) {
267 return -1; /* What about no smb: ? */
272 /* Watch the test below, we are testing to see if we should exit */
274 if (strncmp(p, "//", 2) && strncmp(p, "\\\\", 2)) {
275 DEBUG(1, ("Invalid path (does not begin with smb://"));
279 p += 2; /* Skip the double slash */
281 /* See if any options were specified */
282 if ((q = strrchr(p, '?')) != NULL ) {
283 /* There are options. Null terminate here and point to them */
286 DEBUG(4, ("Found options '%s'", q));
288 /* Copy the options */
289 if (pp_options && *pp_options != NULL) {
290 TALLOC_FREE(*pp_options);
291 *pp_options = talloc_strdup(ctx, q);
300 int wl = strlen(smbc_getWorkgroup(context));
306 *pp_server = talloc_strdup(ctx, smbc_getWorkgroup(context));
310 *pp_server[wl] = '\0';
315 * ok, its for us. Now parse out the server, share etc.
317 * However, we want to parse out [[domain;]user[:password]@] if it
321 /* check that '@' occurs before '/', if '/' exists at all */
322 q = strchr_m(p, '@');
323 r = strchr_m(p, '/');
324 if (q && (!r || q < r)) {
325 char *userinfo = NULL;
328 next_token_no_ltrim_talloc(ctx, &p, &userinfo, "@");
334 if (strchr_m(u, ';')) {
336 next_token_no_ltrim_talloc(ctx, &u, &workgroup, ";");
341 *pp_workgroup = workgroup;
345 if (strchr_m(u, ':')) {
346 next_token_no_ltrim_talloc(ctx, &u, pp_user, ":");
350 *pp_password = talloc_strdup(ctx, u);
355 *pp_user = talloc_strdup(ctx, u);
362 if (!next_token_talloc(ctx, &p, pp_server, "/")) {
367 goto decoding; /* That's it ... */
370 if (!next_token_talloc(ctx, &p, pp_share, "/")) {
375 * Prepend a leading slash if there's a file path, as required by
379 *pp_path = talloc_asprintf(ctx,
383 *pp_path = talloc_strdup(ctx, "");
388 string_replace(*pp_path, '/', '\\');
392 (void) urldecode_talloc(ctx, pp_path, *pp_path);
393 (void) urldecode_talloc(ctx, pp_server, *pp_server);
394 (void) urldecode_talloc(ctx, pp_share, *pp_share);
395 (void) urldecode_talloc(ctx, pp_user, *pp_user);
396 (void) urldecode_talloc(ctx, pp_password, *pp_password);