1/*
2 * Copyright (c) 2000, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
| 1/*
2 * Copyright (c) 2000, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
|
32 * $Id: subr.c,v 1.11 2001/04/16 04:33:01 bp Exp $
| 32 * $Id: subr.c,v 1.12 2001/08/22 03:31:37 bp Exp $
|
33 */
34
35#include <sys/param.h>
36#include <sys/types.h>
37#include <sys/errno.h>
38#include <sys/sysctl.h>
39#include <sys/syscall.h>
40#include <unistd.h>
41#include <ctype.h>
42#include <string.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <stdarg.h>
46#include <err.h>
47
48#include <netsmb/netbios.h>
49#include <netsmb/smb_lib.h>
50#include <netsmb/nb_lib.h>
51#include <cflib.h>
52
| 33 */
34
35#include <sys/param.h>
36#include <sys/types.h>
37#include <sys/errno.h>
38#include <sys/sysctl.h>
39#include <sys/syscall.h>
40#include <unistd.h>
41#include <ctype.h>
42#include <string.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <stdarg.h>
46#include <err.h>
47
48#include <netsmb/netbios.h>
49#include <netsmb/smb_lib.h>
50#include <netsmb/nb_lib.h>
51#include <cflib.h>
52
|
| 53#ifdef APPLE
54#include <sysexits.h>
55#include <sys/wait.h>
56#include <mach/mach.h>
57#include <mach/mach_error.h>
58
59uid_t real_uid, eff_uid;
60#endif
61
|
53extern char *__progname;
54
55static int smblib_initialized;
56
57struct rcfile *smb_rc;
58
59int
60smb_lib_init(void)
61{
62 int error;
63 int kv;
64 size_t kvlen = sizeof(kv);
65
66 if (smblib_initialized)
67 return 0;
68#if __FreeBSD_version > 400000
69 error = sysctlbyname("net.smb.version", &kv, &kvlen, NULL, 0);
70 if (error) {
71 warnx("%s: can't find kernel module\n", __FUNCTION__);
72 return error;
73 }
74 if (NSMB_VERSION != kv) {
75 warnx("%s: kernel module version(%d) don't match library(%d).\n", __FUNCTION__, kv, NSMB_VERSION);
76 return EINVAL;
77 }
78#endif
79 if ((error = nls_setlocale("")) != 0) {
80 warnx("%s: can't initialise locale\n", __FUNCTION__);
81 return error;
82 }
83 smblib_initialized++;
84 return 0;
85}
86
87/*
88 * Print a (descriptive) error message
89 * error values:
90 * 0 - no specific error code available;
91 * 1..32767 - system error
92 */
93void
94smb_error(const char *fmt, int error,...) {
95 va_list ap;
96 const char *cp;
97 int errtype = error & SMB_ERRTYPE_MASK;
98
99 fprintf(stderr, "%s: ", __progname);
100 va_start(ap, error);
101 vfprintf(stderr, fmt, ap);
102 va_end(ap);
103 if (error == -1)
104 error = errno;
105 else
106 error &= ~SMB_ERRTYPE_MASK;
107 switch (errtype) {
108 case SMB_SYS_ERROR:
109 if (error)
110 fprintf(stderr, ": syserr = %s\n", strerror(error));
111 else
112 fprintf(stderr, "\n");
113 break;
114 case SMB_RAP_ERROR:
115 fprintf(stderr, ": raperr = %d (0x%04x)\n", error, error);
116 break;
117 case SMB_NB_ERROR:
118 cp = nb_strerror(error);
119 if (cp == NULL)
120 fprintf(stderr, ": nberr = unknown (0x%04x)\n", error);
121 else
122 fprintf(stderr, ": nberr = %s\n", cp);
123 break;
124 default:
125 fprintf(stderr, "\n");
126 }
127}
128
129char *
130smb_printb(char *dest, int flags, const struct smb_bitname *bnp) {
131 int first = 1;
132
133 strcpy(dest, "<");
134 for(; bnp->bn_bit; bnp++) {
135 if (flags & bnp->bn_bit) {
136 strcat(dest, bnp->bn_name);
137 first = 0;
138 }
139 if (!first && (flags & bnp[1].bn_bit))
140 strcat(dest, "|");
141 }
142 strcat(dest, ">");
143 return dest;
144}
145
146/*
147 * first read ~/.smbrc, next try to merge SMB_CFG_FILE
148 */
149int
150smb_open_rcfile(void)
151{
152 char *home, *fn;
153 int error;
154
155 home = getenv("HOME");
156 if (home) {
157 fn = malloc(strlen(home) + 20);
158 sprintf(fn, "%s/.nsmbrc", home);
159 error = rc_open(fn, "r", &smb_rc);
160 free(fn);
161 }
162 error = rc_merge(SMB_CFG_FILE, &smb_rc);
163 if (smb_rc == NULL) {
164 printf("Warning: no cfg file(s) found.\n");
165 return ENOENT;
166 }
167 return 0;
168}
169
170void *
171smb_dumptree(void)
172{
173 size_t len;
174 void *p;
175 int error;
176
| 62extern char *__progname;
63
64static int smblib_initialized;
65
66struct rcfile *smb_rc;
67
68int
69smb_lib_init(void)
70{
71 int error;
72 int kv;
73 size_t kvlen = sizeof(kv);
74
75 if (smblib_initialized)
76 return 0;
77#if __FreeBSD_version > 400000
78 error = sysctlbyname("net.smb.version", &kv, &kvlen, NULL, 0);
79 if (error) {
80 warnx("%s: can't find kernel module\n", __FUNCTION__);
81 return error;
82 }
83 if (NSMB_VERSION != kv) {
84 warnx("%s: kernel module version(%d) don't match library(%d).\n", __FUNCTION__, kv, NSMB_VERSION);
85 return EINVAL;
86 }
87#endif
88 if ((error = nls_setlocale("")) != 0) {
89 warnx("%s: can't initialise locale\n", __FUNCTION__);
90 return error;
91 }
92 smblib_initialized++;
93 return 0;
94}
95
96/*
97 * Print a (descriptive) error message
98 * error values:
99 * 0 - no specific error code available;
100 * 1..32767 - system error
101 */
102void
103smb_error(const char *fmt, int error,...) {
104 va_list ap;
105 const char *cp;
106 int errtype = error & SMB_ERRTYPE_MASK;
107
108 fprintf(stderr, "%s: ", __progname);
109 va_start(ap, error);
110 vfprintf(stderr, fmt, ap);
111 va_end(ap);
112 if (error == -1)
113 error = errno;
114 else
115 error &= ~SMB_ERRTYPE_MASK;
116 switch (errtype) {
117 case SMB_SYS_ERROR:
118 if (error)
119 fprintf(stderr, ": syserr = %s\n", strerror(error));
120 else
121 fprintf(stderr, "\n");
122 break;
123 case SMB_RAP_ERROR:
124 fprintf(stderr, ": raperr = %d (0x%04x)\n", error, error);
125 break;
126 case SMB_NB_ERROR:
127 cp = nb_strerror(error);
128 if (cp == NULL)
129 fprintf(stderr, ": nberr = unknown (0x%04x)\n", error);
130 else
131 fprintf(stderr, ": nberr = %s\n", cp);
132 break;
133 default:
134 fprintf(stderr, "\n");
135 }
136}
137
138char *
139smb_printb(char *dest, int flags, const struct smb_bitname *bnp) {
140 int first = 1;
141
142 strcpy(dest, "<");
143 for(; bnp->bn_bit; bnp++) {
144 if (flags & bnp->bn_bit) {
145 strcat(dest, bnp->bn_name);
146 first = 0;
147 }
148 if (!first && (flags & bnp[1].bn_bit))
149 strcat(dest, "|");
150 }
151 strcat(dest, ">");
152 return dest;
153}
154
155/*
156 * first read ~/.smbrc, next try to merge SMB_CFG_FILE
157 */
158int
159smb_open_rcfile(void)
160{
161 char *home, *fn;
162 int error;
163
164 home = getenv("HOME");
165 if (home) {
166 fn = malloc(strlen(home) + 20);
167 sprintf(fn, "%s/.nsmbrc", home);
168 error = rc_open(fn, "r", &smb_rc);
169 free(fn);
170 }
171 error = rc_merge(SMB_CFG_FILE, &smb_rc);
172 if (smb_rc == NULL) {
173 printf("Warning: no cfg file(s) found.\n");
174 return ENOENT;
175 }
176 return 0;
177}
178
179void *
180smb_dumptree(void)
181{
182 size_t len;
183 void *p;
184 int error;
185
|
| 186#ifdef APPLE
187 seteuid(eff_uid); /* restore setuid root briefly */
188#endif
|
177 error = sysctlbyname("net.smb.treedump", NULL, &len, NULL, 0);
| 189 error = sysctlbyname("net.smb.treedump", NULL, &len, NULL, 0);
|
| 190#ifdef APPLE
191 seteuid(real_uid); /* and back to real user */
192#endif
|
178 if (error)
179 return NULL;
180 p = malloc(len);
181 if (p == NULL)
182 return NULL;
| 193 if (error)
194 return NULL;
195 p = malloc(len);
196 if (p == NULL)
197 return NULL;
|
| 198#ifdef APPLE
199 seteuid(eff_uid); /* restore setuid root briefly */
200#endif
|
183 error = sysctlbyname("net.smb.treedump", p, &len, NULL, 0);
| 201 error = sysctlbyname("net.smb.treedump", p, &len, NULL, 0);
|
| 202#ifdef APPLE
203 seteuid(real_uid); /* and back to real user */
204#endif
|
184 if (error) {
185 free(p);
186 return NULL;
187 }
188 return p;
189}
190
| 205 if (error) {
206 free(p);
207 return NULL;
208 }
209 return p;
210}
211
|
191void
| 212char *
|
192smb_simplecrypt(char *dst, const char *src)
193{
194 int ch, pos;
| 213smb_simplecrypt(char *dst, const char *src)
214{
215 int ch, pos;
|
| 216 char *dp;
|
195
| 217
|
| 218 if (dst == NULL) {
219 dst = malloc(4 + 2 * strlen(src));
220 if (dst == NULL)
221 return NULL;
222 }
223 dp = dst;
|
196 *dst++ = '$';
197 *dst++ = '$';
198 *dst++ = '1';
199 pos = 27;
200 while (*src) {
201 ch = *src++;
202 if (isascii(ch))
203 ch = (isupper(ch) ? ('A' + (ch - 'A' + 13) % 26) :
204 islower(ch) ? ('a' + (ch - 'a' + 13) % 26) : ch);
205 ch ^= pos;
206 pos += 13;
207 sprintf(dst, "%02x", ch);
208 dst += 2;
209 }
210 *dst = 0;
| 224 *dst++ = '$';
225 *dst++ = '$';
226 *dst++ = '1';
227 pos = 27;
228 while (*src) {
229 ch = *src++;
230 if (isascii(ch))
231 ch = (isupper(ch) ? ('A' + (ch - 'A' + 13) % 26) :
232 islower(ch) ? ('a' + (ch - 'a' + 13) % 26) : ch);
233 ch ^= pos;
234 pos += 13;
235 sprintf(dst, "%02x", ch);
236 dst += 2;
237 }
238 *dst = 0;
|
| 239 return dp;
|
211}
212
213int
214smb_simpledecrypt(char *dst, const char *src)
215{
216 char *ep, hexval[3];
217 int len, ch, pos;
218
219 if (strncmp(src, "$$1", 3) != 0)
220 return EINVAL;
221 src += 3;
222 len = strlen(src);
223 if (len & 1)
224 return EINVAL;
225 len /= 2;
226 hexval[2] = 0;
227 pos = 27;
228 while (len--) {
229 hexval[0] = *src++;
230 hexval[1] = *src++;
231 ch = strtoul(hexval, &ep, 16);
232 if (*ep != 0)
233 return EINVAL;
234 ch ^= pos;
235 pos += 13;
236 if (isascii(ch))
237 ch = (isupper(ch) ? ('A' + (ch - 'A' + 13) % 26) :
238 islower(ch) ? ('a' + (ch - 'a' + 13) % 26) : ch);
239 *dst++ = ch;
240 }
241 *dst = 0;
242 return 0;
243}
| 240}
241
242int
243smb_simpledecrypt(char *dst, const char *src)
244{
245 char *ep, hexval[3];
246 int len, ch, pos;
247
248 if (strncmp(src, "$$1", 3) != 0)
249 return EINVAL;
250 src += 3;
251 len = strlen(src);
252 if (len & 1)
253 return EINVAL;
254 len /= 2;
255 hexval[2] = 0;
256 pos = 27;
257 while (len--) {
258 hexval[0] = *src++;
259 hexval[1] = *src++;
260 ch = strtoul(hexval, &ep, 16);
261 if (*ep != 0)
262 return EINVAL;
263 ch ^= pos;
264 pos += 13;
265 if (isascii(ch))
266 ch = (isupper(ch) ? ('A' + (ch - 'A' + 13) % 26) :
267 islower(ch) ? ('a' + (ch - 'a' + 13) % 26) : ch);
268 *dst++ = ch;
269 }
270 *dst = 0;
271 return 0;
272}
|
| 273
274
275#ifdef APPLE
276static int
277safe_execv(char *args[])
278{
279 int pid;
280 union wait status;
281
282 pid = fork();
283 if (pid == 0) {
284 (void)execv(args[0], args);
285 errx(EX_OSERR, "%s: execv %s failed, %s\n", __progname,
286 args[0], strerror(errno));
287 }
288 if (pid == -1) {
289 fprintf(stderr, "%s: fork failed, %s\n", __progname,
290 strerror(errno));
291 return (1);
292 }
293 if (wait4(pid, (int *)&status, 0, NULL) != pid) {
294 fprintf(stderr, "%s: BUG executing %s command\n", __progname,
295 args[0]);
296 return (1);
297 } else if (!WIFEXITED(status)) {
298 fprintf(stderr, "%s: %s command aborted by signal %d\n",
299 __progname, args[0], WTERMSIG(status));
300 return (1);
301 } else if (WEXITSTATUS(status)) {
302 fprintf(stderr, "%s: %s command failed, exit status %d: %s\n",
303 __progname, args[0], WEXITSTATUS(status),
304 strerror(WEXITSTATUS(status)));
305 return (1);
306 }
307 return (0);
308}
309
310
311void
312dropsuid()
313{
314 /* drop setuid root privs asap */
315 eff_uid = geteuid();
316 real_uid = getuid();
317 seteuid(real_uid);
318 return;
319}
320
321
322static int
323kextisloaded(char * kextname)
324{
325 mach_port_t kernel_port;
326 kmod_info_t *k, *loaded_modules = 0;
327 int err, loaded_count = 0;
328
329 /* on error return not loaded - to make loadsmbvfs fail */
330
331 err = task_for_pid(mach_task_self(), 0, &kernel_port);
332 if (err) {
333 fprintf(stderr, "%s: %s: %s\n", __progname,
334 "unable to get kernel task port",
335 mach_error_string(err));
336 return (0);
337 }
338 err = kmod_get_info(kernel_port, (void *)&loaded_modules,
339 &loaded_count); /* never freed */
340 if (err) {
341 fprintf(stderr, "%s: %s: %s\n", __progname,
342 "kmod_get_info() failed",
343 mach_error_string(err));
344 return (0);
345 }
346 for (k = loaded_modules; k; k = k->next ? k+1 : 0)
347 if (!strcmp(k->name, kextname))
348 return (1);
349 return (0);
350}
351
352
353#define KEXTLOAD_COMMAND "/sbin/kextload"
354#define FS_KEXT_DIR "/System/Library/Extensions/smbfs.kext"
355#define FULL_KEXTNAME "com.apple.filesystems.smbfs"
356
357
358int
359loadsmbvfs()
360{
361 const char *kextargs[] = {KEXTLOAD_COMMAND, FS_KEXT_DIR, NULL};
362 int error = 0;
363
364 /*
365 * temporarily revert to root (required for kextload)
366 */
367 seteuid(eff_uid);
368 if (!kextisloaded(FULL_KEXTNAME)) {
369 error = safe_execv(kextargs);
370 if (!error)
371 error = !kextisloaded(FULL_KEXTNAME);
372 }
373 seteuid(real_uid); /* and back to real user */
374 return (error);
375}
376#endif /* APPLE */
|
| |