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b5e300c2 | 1 | /* |
71c1910f | 2 | * Copyright (c) 2000-2004 Markus Friedl. All rights reserved. |
b5e300c2 | 3 | * |
71c1910f | 4 | * Permission to use, copy, modify, and distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
b5e300c2 | 7 | * |
71c1910f | 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
b5e300c2 | 15 | */ |
16 | #include "includes.h" | |
fd6168c1 | 17 | RCSID("$OpenBSD: sftp-server.c,v 1.49 2005/09/13 23:40:07 djm Exp $"); |
b5e300c2 | 18 | |
b5e300c2 | 19 | #include "buffer.h" |
20 | #include "bufaux.h" | |
21 | #include "getput.h" | |
42f11eb2 | 22 | #include "log.h" |
b5e300c2 | 23 | #include "xmalloc.h" |
fd6168c1 | 24 | #include "misc.h" |
b5e300c2 | 25 | |
f546c780 | 26 | #include "sftp.h" |
61e96248 | 27 | #include "sftp-common.h" |
b5e300c2 | 28 | |
29 | /* helper */ | |
f546c780 | 30 | #define get_int64() buffer_get_int64(&iqueue); |
b5e300c2 | 31 | #define get_int() buffer_get_int(&iqueue); |
32 | #define get_string(lenp) buffer_get_string(&iqueue, lenp); | |
f546c780 | 33 | #define TRACE debug |
b5e300c2 | 34 | |
260d427b | 35 | extern char *__progname; |
260d427b | 36 | |
b5e300c2 | 37 | /* input and output queue */ |
38 | Buffer iqueue; | |
39 | Buffer oqueue; | |
40 | ||
3a7fe5ba | 41 | /* Version of client */ |
42 | int version; | |
43 | ||
d7ded285 | 44 | /* portable attributes, etc. */ |
b5e300c2 | 45 | |
b5e300c2 | 46 | typedef struct Stat Stat; |
47 | ||
61e96248 | 48 | struct Stat { |
b5e300c2 | 49 | char *name; |
50 | char *long_name; | |
51 | Attrib attrib; | |
52 | }; | |
53 | ||
396c147e | 54 | static int |
b5e300c2 | 55 | errno_to_portable(int unixerrno) |
56 | { | |
57 | int ret = 0; | |
dce9bac5 | 58 | |
b5e300c2 | 59 | switch (unixerrno) { |
60 | case 0: | |
f546c780 | 61 | ret = SSH2_FX_OK; |
b5e300c2 | 62 | break; |
63 | case ENOENT: | |
64 | case ENOTDIR: | |
65 | case EBADF: | |
66 | case ELOOP: | |
f546c780 | 67 | ret = SSH2_FX_NO_SUCH_FILE; |
b5e300c2 | 68 | break; |
69 | case EPERM: | |
70 | case EACCES: | |
71 | case EFAULT: | |
f546c780 | 72 | ret = SSH2_FX_PERMISSION_DENIED; |
b5e300c2 | 73 | break; |
74 | case ENAMETOOLONG: | |
75 | case EINVAL: | |
f546c780 | 76 | ret = SSH2_FX_BAD_MESSAGE; |
b5e300c2 | 77 | break; |
78 | default: | |
f546c780 | 79 | ret = SSH2_FX_FAILURE; |
b5e300c2 | 80 | break; |
81 | } | |
82 | return ret; | |
83 | } | |
84 | ||
396c147e | 85 | static int |
b5e300c2 | 86 | flags_from_portable(int pflags) |
87 | { | |
88 | int flags = 0; | |
dce9bac5 | 89 | |
79ddf6db | 90 | if ((pflags & SSH2_FXF_READ) && |
91 | (pflags & SSH2_FXF_WRITE)) { | |
b5e300c2 | 92 | flags = O_RDWR; |
f546c780 | 93 | } else if (pflags & SSH2_FXF_READ) { |
b5e300c2 | 94 | flags = O_RDONLY; |
f546c780 | 95 | } else if (pflags & SSH2_FXF_WRITE) { |
b5e300c2 | 96 | flags = O_WRONLY; |
97 | } | |
f546c780 | 98 | if (pflags & SSH2_FXF_CREAT) |
b5e300c2 | 99 | flags |= O_CREAT; |
f546c780 | 100 | if (pflags & SSH2_FXF_TRUNC) |
b5e300c2 | 101 | flags |= O_TRUNC; |
f546c780 | 102 | if (pflags & SSH2_FXF_EXCL) |
b5e300c2 | 103 | flags |= O_EXCL; |
104 | return flags; | |
105 | } | |
106 | ||
396c147e | 107 | static Attrib * |
b5e300c2 | 108 | get_attrib(void) |
109 | { | |
110 | return decode_attrib(&iqueue); | |
111 | } | |
112 | ||
113 | /* handle handles */ | |
114 | ||
115 | typedef struct Handle Handle; | |
116 | struct Handle { | |
117 | int use; | |
118 | DIR *dirp; | |
119 | int fd; | |
120 | char *name; | |
121 | }; | |
dce9bac5 | 122 | |
b5e300c2 | 123 | enum { |
124 | HANDLE_UNUSED, | |
125 | HANDLE_DIR, | |
126 | HANDLE_FILE | |
127 | }; | |
dce9bac5 | 128 | |
b5e300c2 | 129 | Handle handles[100]; |
130 | ||
396c147e | 131 | static void |
b5e300c2 | 132 | handle_init(void) |
133 | { | |
2ceb8101 | 134 | u_int i; |
dce9bac5 | 135 | |
184eed6a | 136 | for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) |
b5e300c2 | 137 | handles[i].use = HANDLE_UNUSED; |
138 | } | |
139 | ||
396c147e | 140 | static int |
b6c7b7b7 | 141 | handle_new(int use, const char *name, int fd, DIR *dirp) |
b5e300c2 | 142 | { |
2ceb8101 | 143 | u_int i; |
dce9bac5 | 144 | |
184eed6a | 145 | for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) { |
b5e300c2 | 146 | if (handles[i].use == HANDLE_UNUSED) { |
147 | handles[i].use = use; | |
148 | handles[i].dirp = dirp; | |
149 | handles[i].fd = fd; | |
3e2f2431 | 150 | handles[i].name = xstrdup(name); |
b5e300c2 | 151 | return i; |
152 | } | |
153 | } | |
154 | return -1; | |
155 | } | |
156 | ||
396c147e | 157 | static int |
b5e300c2 | 158 | handle_is_ok(int i, int type) |
159 | { | |
2ceb8101 | 160 | return i >= 0 && (u_int)i < sizeof(handles)/sizeof(Handle) && |
f546c780 | 161 | handles[i].use == type; |
b5e300c2 | 162 | } |
163 | ||
396c147e | 164 | static int |
b5e300c2 | 165 | handle_to_string(int handle, char **stringp, int *hlenp) |
166 | { | |
b5e300c2 | 167 | if (stringp == NULL || hlenp == NULL) |
168 | return -1; | |
b5c334cc | 169 | *stringp = xmalloc(sizeof(int32_t)); |
170 | PUT_32BIT(*stringp, handle); | |
171 | *hlenp = sizeof(int32_t); | |
b5e300c2 | 172 | return 0; |
173 | } | |
174 | ||
396c147e | 175 | static int |
b6c7b7b7 | 176 | handle_from_string(const char *handle, u_int hlen) |
b5e300c2 | 177 | { |
b5c334cc | 178 | int val; |
dce9bac5 | 179 | |
b5c334cc | 180 | if (hlen != sizeof(int32_t)) |
b5e300c2 | 181 | return -1; |
b5c334cc | 182 | val = GET_32BIT(handle); |
b5e300c2 | 183 | if (handle_is_ok(val, HANDLE_FILE) || |
184 | handle_is_ok(val, HANDLE_DIR)) | |
185 | return val; | |
186 | return -1; | |
187 | } | |
188 | ||
396c147e | 189 | static char * |
b5e300c2 | 190 | handle_to_name(int handle) |
191 | { | |
192 | if (handle_is_ok(handle, HANDLE_DIR)|| | |
193 | handle_is_ok(handle, HANDLE_FILE)) | |
194 | return handles[handle].name; | |
195 | return NULL; | |
196 | } | |
197 | ||
396c147e | 198 | static DIR * |
b5e300c2 | 199 | handle_to_dir(int handle) |
200 | { | |
201 | if (handle_is_ok(handle, HANDLE_DIR)) | |
202 | return handles[handle].dirp; | |
203 | return NULL; | |
204 | } | |
205 | ||
396c147e | 206 | static int |
b5e300c2 | 207 | handle_to_fd(int handle) |
208 | { | |
2b87da3b | 209 | if (handle_is_ok(handle, HANDLE_FILE)) |
b5e300c2 | 210 | return handles[handle].fd; |
211 | return -1; | |
212 | } | |
213 | ||
396c147e | 214 | static int |
b5e300c2 | 215 | handle_close(int handle) |
216 | { | |
217 | int ret = -1; | |
dce9bac5 | 218 | |
b5e300c2 | 219 | if (handle_is_ok(handle, HANDLE_FILE)) { |
220 | ret = close(handles[handle].fd); | |
221 | handles[handle].use = HANDLE_UNUSED; | |
3e2f2431 | 222 | xfree(handles[handle].name); |
b5e300c2 | 223 | } else if (handle_is_ok(handle, HANDLE_DIR)) { |
224 | ret = closedir(handles[handle].dirp); | |
225 | handles[handle].use = HANDLE_UNUSED; | |
3e2f2431 | 226 | xfree(handles[handle].name); |
b5e300c2 | 227 | } else { |
228 | errno = ENOENT; | |
229 | } | |
230 | return ret; | |
231 | } | |
232 | ||
396c147e | 233 | static int |
b5e300c2 | 234 | get_handle(void) |
235 | { | |
236 | char *handle; | |
f546c780 | 237 | int val = -1; |
bcbf86ec | 238 | u_int hlen; |
dce9bac5 | 239 | |
b5e300c2 | 240 | handle = get_string(&hlen); |
f546c780 | 241 | if (hlen < 256) |
242 | val = handle_from_string(handle, hlen); | |
b5e300c2 | 243 | xfree(handle); |
244 | return val; | |
245 | } | |
246 | ||
247 | /* send replies */ | |
248 | ||
396c147e | 249 | static void |
b5e300c2 | 250 | send_msg(Buffer *m) |
251 | { | |
252 | int mlen = buffer_len(m); | |
dce9bac5 | 253 | |
b5e300c2 | 254 | buffer_put_int(&oqueue, mlen); |
255 | buffer_append(&oqueue, buffer_ptr(m), mlen); | |
256 | buffer_consume(m, mlen); | |
257 | } | |
258 | ||
396c147e | 259 | static void |
ca75d7de | 260 | send_status(u_int32_t id, u_int32_t status) |
b5e300c2 | 261 | { |
262 | Buffer msg; | |
3a7fe5ba | 263 | const char *status_messages[] = { |
264 | "Success", /* SSH_FX_OK */ | |
265 | "End of file", /* SSH_FX_EOF */ | |
266 | "No such file", /* SSH_FX_NO_SUCH_FILE */ | |
267 | "Permission denied", /* SSH_FX_PERMISSION_DENIED */ | |
268 | "Failure", /* SSH_FX_FAILURE */ | |
269 | "Bad message", /* SSH_FX_BAD_MESSAGE */ | |
270 | "No connection", /* SSH_FX_NO_CONNECTION */ | |
271 | "Connection lost", /* SSH_FX_CONNECTION_LOST */ | |
272 | "Operation unsupported", /* SSH_FX_OP_UNSUPPORTED */ | |
273 | "Unknown error" /* Others */ | |
274 | }; | |
dce9bac5 | 275 | |
ca75d7de | 276 | TRACE("sent status id %u error %u", id, status); |
b5e300c2 | 277 | buffer_init(&msg); |
f546c780 | 278 | buffer_put_char(&msg, SSH2_FXP_STATUS); |
b5e300c2 | 279 | buffer_put_int(&msg, id); |
ca75d7de | 280 | buffer_put_int(&msg, status); |
3a7fe5ba | 281 | if (version >= 3) { |
cd332296 | 282 | buffer_put_cstring(&msg, |
ca75d7de | 283 | status_messages[MIN(status,SSH2_FX_MAX)]); |
3a7fe5ba | 284 | buffer_put_cstring(&msg, ""); |
285 | } | |
b5e300c2 | 286 | send_msg(&msg); |
287 | buffer_free(&msg); | |
288 | } | |
396c147e | 289 | static void |
b6c7b7b7 | 290 | send_data_or_handle(char type, u_int32_t id, const char *data, int dlen) |
b5e300c2 | 291 | { |
292 | Buffer msg; | |
dce9bac5 | 293 | |
b5e300c2 | 294 | buffer_init(&msg); |
295 | buffer_put_char(&msg, type); | |
296 | buffer_put_int(&msg, id); | |
297 | buffer_put_string(&msg, data, dlen); | |
298 | send_msg(&msg); | |
299 | buffer_free(&msg); | |
300 | } | |
301 | ||
396c147e | 302 | static void |
b6c7b7b7 | 303 | send_data(u_int32_t id, const char *data, int dlen) |
b5e300c2 | 304 | { |
9906a836 | 305 | TRACE("sent data id %u len %d", id, dlen); |
f546c780 | 306 | send_data_or_handle(SSH2_FXP_DATA, id, data, dlen); |
b5e300c2 | 307 | } |
308 | ||
396c147e | 309 | static void |
b5e300c2 | 310 | send_handle(u_int32_t id, int handle) |
311 | { | |
312 | char *string; | |
313 | int hlen; | |
dce9bac5 | 314 | |
b5e300c2 | 315 | handle_to_string(handle, &string, &hlen); |
9906a836 | 316 | TRACE("sent handle id %u handle %d", id, handle); |
f546c780 | 317 | send_data_or_handle(SSH2_FXP_HANDLE, id, string, hlen); |
b5e300c2 | 318 | xfree(string); |
319 | } | |
320 | ||
396c147e | 321 | static void |
b6c7b7b7 | 322 | send_names(u_int32_t id, int count, const Stat *stats) |
b5e300c2 | 323 | { |
324 | Buffer msg; | |
325 | int i; | |
dce9bac5 | 326 | |
b5e300c2 | 327 | buffer_init(&msg); |
f546c780 | 328 | buffer_put_char(&msg, SSH2_FXP_NAME); |
b5e300c2 | 329 | buffer_put_int(&msg, id); |
330 | buffer_put_int(&msg, count); | |
9906a836 | 331 | TRACE("sent names id %u count %d", id, count); |
b5e300c2 | 332 | for (i = 0; i < count; i++) { |
333 | buffer_put_cstring(&msg, stats[i].name); | |
334 | buffer_put_cstring(&msg, stats[i].long_name); | |
335 | encode_attrib(&msg, &stats[i].attrib); | |
336 | } | |
337 | send_msg(&msg); | |
338 | buffer_free(&msg); | |
339 | } | |
340 | ||
396c147e | 341 | static void |
b6c7b7b7 | 342 | send_attrib(u_int32_t id, const Attrib *a) |
b5e300c2 | 343 | { |
344 | Buffer msg; | |
dce9bac5 | 345 | |
9906a836 | 346 | TRACE("sent attrib id %u have 0x%x", id, a->flags); |
b5e300c2 | 347 | buffer_init(&msg); |
f546c780 | 348 | buffer_put_char(&msg, SSH2_FXP_ATTRS); |
b5e300c2 | 349 | buffer_put_int(&msg, id); |
350 | encode_attrib(&msg, a); | |
351 | send_msg(&msg); | |
352 | buffer_free(&msg); | |
353 | } | |
354 | ||
355 | /* parse incoming */ | |
356 | ||
396c147e | 357 | static void |
b5e300c2 | 358 | process_init(void) |
359 | { | |
360 | Buffer msg; | |
b5e300c2 | 361 | |
802d93bb | 362 | version = get_int(); |
b5e300c2 | 363 | TRACE("client version %d", version); |
364 | buffer_init(&msg); | |
f546c780 | 365 | buffer_put_char(&msg, SSH2_FXP_VERSION); |
366 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
b5e300c2 | 367 | send_msg(&msg); |
368 | buffer_free(&msg); | |
369 | } | |
370 | ||
396c147e | 371 | static void |
b5e300c2 | 372 | process_open(void) |
373 | { | |
374 | u_int32_t id, pflags; | |
375 | Attrib *a; | |
376 | char *name; | |
f546c780 | 377 | int handle, fd, flags, mode, status = SSH2_FX_FAILURE; |
b5e300c2 | 378 | |
379 | id = get_int(); | |
380 | name = get_string(NULL); | |
f546c780 | 381 | pflags = get_int(); /* portable flags */ |
b5e300c2 | 382 | a = get_attrib(); |
383 | flags = flags_from_portable(pflags); | |
f546c780 | 384 | mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? a->perm : 0666; |
9906a836 | 385 | TRACE("open id %u name %s flags %d mode 0%o", id, name, pflags, mode); |
b5e300c2 | 386 | fd = open(name, flags, mode); |
387 | if (fd < 0) { | |
388 | status = errno_to_portable(errno); | |
389 | } else { | |
3e2f2431 | 390 | handle = handle_new(HANDLE_FILE, name, fd, NULL); |
b5e300c2 | 391 | if (handle < 0) { |
392 | close(fd); | |
393 | } else { | |
394 | send_handle(id, handle); | |
f546c780 | 395 | status = SSH2_FX_OK; |
b5e300c2 | 396 | } |
397 | } | |
f546c780 | 398 | if (status != SSH2_FX_OK) |
b5e300c2 | 399 | send_status(id, status); |
400 | xfree(name); | |
401 | } | |
402 | ||
396c147e | 403 | static void |
b5e300c2 | 404 | process_close(void) |
405 | { | |
406 | u_int32_t id; | |
f546c780 | 407 | int handle, ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 408 | |
409 | id = get_int(); | |
410 | handle = get_handle(); | |
9906a836 | 411 | TRACE("close id %u handle %d", id, handle); |
b5e300c2 | 412 | ret = handle_close(handle); |
f546c780 | 413 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 414 | send_status(id, status); |
415 | } | |
416 | ||
396c147e | 417 | static void |
b5e300c2 | 418 | process_read(void) |
419 | { | |
420 | char buf[64*1024]; | |
f546c780 | 421 | u_int32_t id, len; |
422 | int handle, fd, ret, status = SSH2_FX_FAILURE; | |
b5e300c2 | 423 | u_int64_t off; |
424 | ||
425 | id = get_int(); | |
426 | handle = get_handle(); | |
f546c780 | 427 | off = get_int64(); |
b5e300c2 | 428 | len = get_int(); |
429 | ||
9906a836 | 430 | TRACE("read id %u handle %d off %llu len %d", id, handle, |
419094c6 | 431 | (unsigned long long)off, len); |
b5e300c2 | 432 | if (len > sizeof buf) { |
433 | len = sizeof buf; | |
bbe88b6d | 434 | logit("read change len %d", len); |
b5e300c2 | 435 | } |
436 | fd = handle_to_fd(handle); | |
437 | if (fd >= 0) { | |
438 | if (lseek(fd, off, SEEK_SET) < 0) { | |
439 | error("process_read: seek failed"); | |
440 | status = errno_to_portable(errno); | |
441 | } else { | |
442 | ret = read(fd, buf, len); | |
443 | if (ret < 0) { | |
444 | status = errno_to_portable(errno); | |
445 | } else if (ret == 0) { | |
f546c780 | 446 | status = SSH2_FX_EOF; |
b5e300c2 | 447 | } else { |
448 | send_data(id, buf, ret); | |
f546c780 | 449 | status = SSH2_FX_OK; |
b5e300c2 | 450 | } |
451 | } | |
452 | } | |
f546c780 | 453 | if (status != SSH2_FX_OK) |
b5e300c2 | 454 | send_status(id, status); |
455 | } | |
456 | ||
396c147e | 457 | static void |
b5e300c2 | 458 | process_write(void) |
459 | { | |
f546c780 | 460 | u_int32_t id; |
b5e300c2 | 461 | u_int64_t off; |
bcbf86ec | 462 | u_int len; |
f546c780 | 463 | int handle, fd, ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 464 | char *data; |
465 | ||
466 | id = get_int(); | |
467 | handle = get_handle(); | |
f546c780 | 468 | off = get_int64(); |
b5e300c2 | 469 | data = get_string(&len); |
470 | ||
9906a836 | 471 | TRACE("write id %u handle %d off %llu len %d", id, handle, |
419094c6 | 472 | (unsigned long long)off, len); |
b5e300c2 | 473 | fd = handle_to_fd(handle); |
474 | if (fd >= 0) { | |
475 | if (lseek(fd, off, SEEK_SET) < 0) { | |
476 | status = errno_to_portable(errno); | |
477 | error("process_write: seek failed"); | |
478 | } else { | |
479 | /* XXX ATOMICIO ? */ | |
480 | ret = write(fd, data, len); | |
2ceb8101 | 481 | if (ret < 0) { |
b5e300c2 | 482 | error("process_write: write failed"); |
483 | status = errno_to_portable(errno); | |
2ceb8101 | 484 | } else if ((size_t)ret == len) { |
f546c780 | 485 | status = SSH2_FX_OK; |
b5e300c2 | 486 | } else { |
bbe88b6d | 487 | logit("nothing at all written"); |
b5e300c2 | 488 | } |
489 | } | |
490 | } | |
491 | send_status(id, status); | |
492 | xfree(data); | |
493 | } | |
494 | ||
396c147e | 495 | static void |
b5e300c2 | 496 | process_do_stat(int do_lstat) |
497 | { | |
b5c334cc | 498 | Attrib a; |
b5e300c2 | 499 | struct stat st; |
500 | u_int32_t id; | |
501 | char *name; | |
f546c780 | 502 | int ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 503 | |
504 | id = get_int(); | |
505 | name = get_string(NULL); | |
9906a836 | 506 | TRACE("%sstat id %u name %s", do_lstat ? "l" : "", id, name); |
b5e300c2 | 507 | ret = do_lstat ? lstat(name, &st) : stat(name, &st); |
508 | if (ret < 0) { | |
509 | status = errno_to_portable(errno); | |
510 | } else { | |
b5c334cc | 511 | stat_to_attrib(&st, &a); |
512 | send_attrib(id, &a); | |
f546c780 | 513 | status = SSH2_FX_OK; |
b5e300c2 | 514 | } |
f546c780 | 515 | if (status != SSH2_FX_OK) |
b5e300c2 | 516 | send_status(id, status); |
517 | xfree(name); | |
518 | } | |
519 | ||
396c147e | 520 | static void |
b5e300c2 | 521 | process_stat(void) |
522 | { | |
523 | process_do_stat(0); | |
524 | } | |
525 | ||
396c147e | 526 | static void |
b5e300c2 | 527 | process_lstat(void) |
528 | { | |
529 | process_do_stat(1); | |
530 | } | |
531 | ||
396c147e | 532 | static void |
b5e300c2 | 533 | process_fstat(void) |
534 | { | |
b5c334cc | 535 | Attrib a; |
b5e300c2 | 536 | struct stat st; |
537 | u_int32_t id; | |
f546c780 | 538 | int fd, ret, handle, status = SSH2_FX_FAILURE; |
b5e300c2 | 539 | |
540 | id = get_int(); | |
541 | handle = get_handle(); | |
9906a836 | 542 | TRACE("fstat id %u handle %d", id, handle); |
b5e300c2 | 543 | fd = handle_to_fd(handle); |
544 | if (fd >= 0) { | |
545 | ret = fstat(fd, &st); | |
546 | if (ret < 0) { | |
547 | status = errno_to_portable(errno); | |
548 | } else { | |
b5c334cc | 549 | stat_to_attrib(&st, &a); |
550 | send_attrib(id, &a); | |
f546c780 | 551 | status = SSH2_FX_OK; |
b5e300c2 | 552 | } |
553 | } | |
f546c780 | 554 | if (status != SSH2_FX_OK) |
b5e300c2 | 555 | send_status(id, status); |
556 | } | |
557 | ||
396c147e | 558 | static struct timeval * |
b6c7b7b7 | 559 | attrib_to_tv(const Attrib *a) |
b5e300c2 | 560 | { |
561 | static struct timeval tv[2]; | |
dce9bac5 | 562 | |
b5e300c2 | 563 | tv[0].tv_sec = a->atime; |
564 | tv[0].tv_usec = 0; | |
565 | tv[1].tv_sec = a->mtime; | |
566 | tv[1].tv_usec = 0; | |
567 | return tv; | |
568 | } | |
569 | ||
396c147e | 570 | static void |
b5e300c2 | 571 | process_setstat(void) |
572 | { | |
573 | Attrib *a; | |
574 | u_int32_t id; | |
575 | char *name; | |
9906a836 | 576 | int status = SSH2_FX_OK, ret; |
b5e300c2 | 577 | |
578 | id = get_int(); | |
579 | name = get_string(NULL); | |
580 | a = get_attrib(); | |
9906a836 | 581 | TRACE("setstat id %u name %s", id, name); |
cb476289 | 582 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) { |
583 | ret = truncate(name, a->size); | |
584 | if (ret == -1) | |
585 | status = errno_to_portable(errno); | |
586 | } | |
f546c780 | 587 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) { |
b5e300c2 | 588 | ret = chmod(name, a->perm & 0777); |
589 | if (ret == -1) | |
590 | status = errno_to_portable(errno); | |
591 | } | |
f546c780 | 592 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { |
b5e300c2 | 593 | ret = utimes(name, attrib_to_tv(a)); |
594 | if (ret == -1) | |
595 | status = errno_to_portable(errno); | |
596 | } | |
408ba72f | 597 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) { |
598 | ret = chown(name, a->uid, a->gid); | |
599 | if (ret == -1) | |
600 | status = errno_to_portable(errno); | |
601 | } | |
b5e300c2 | 602 | send_status(id, status); |
603 | xfree(name); | |
604 | } | |
605 | ||
396c147e | 606 | static void |
b5e300c2 | 607 | process_fsetstat(void) |
608 | { | |
609 | Attrib *a; | |
610 | u_int32_t id; | |
611 | int handle, fd, ret; | |
f546c780 | 612 | int status = SSH2_FX_OK; |
bcbf86ec | 613 | char *name; |
16e538d4 | 614 | |
b5e300c2 | 615 | id = get_int(); |
616 | handle = get_handle(); | |
617 | a = get_attrib(); | |
9906a836 | 618 | TRACE("fsetstat id %u handle %d", id, handle); |
b5e300c2 | 619 | fd = handle_to_fd(handle); |
620 | name = handle_to_name(handle); | |
16e538d4 | 621 | if (fd < 0 || name == NULL) { |
f546c780 | 622 | status = SSH2_FX_FAILURE; |
b5e300c2 | 623 | } else { |
cb476289 | 624 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) { |
625 | ret = ftruncate(fd, a->size); | |
626 | if (ret == -1) | |
627 | status = errno_to_portable(errno); | |
628 | } | |
f546c780 | 629 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) { |
2fd3c144 | 630 | #ifdef HAVE_FCHMOD |
b5e300c2 | 631 | ret = fchmod(fd, a->perm & 0777); |
2fd3c144 | 632 | #else |
c33f0b36 | 633 | ret = chmod(name, a->perm & 0777); |
2fd3c144 | 634 | #endif |
b5e300c2 | 635 | if (ret == -1) |
636 | status = errno_to_portable(errno); | |
637 | } | |
f546c780 | 638 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { |
b5e300c2 | 639 | #ifdef HAVE_FUTIMES |
640 | ret = futimes(fd, attrib_to_tv(a)); | |
641 | #else | |
642 | ret = utimes(name, attrib_to_tv(a)); | |
643 | #endif | |
644 | if (ret == -1) | |
645 | status = errno_to_portable(errno); | |
646 | } | |
408ba72f | 647 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) { |
01f13020 | 648 | #ifdef HAVE_FCHOWN |
408ba72f | 649 | ret = fchown(fd, a->uid, a->gid); |
01f13020 | 650 | #else |
651 | ret = chown(name, a->uid, a->gid); | |
652 | #endif | |
408ba72f | 653 | if (ret == -1) |
654 | status = errno_to_portable(errno); | |
655 | } | |
b5e300c2 | 656 | } |
657 | send_status(id, status); | |
658 | } | |
659 | ||
396c147e | 660 | static void |
b5e300c2 | 661 | process_opendir(void) |
662 | { | |
663 | DIR *dirp = NULL; | |
664 | char *path; | |
f546c780 | 665 | int handle, status = SSH2_FX_FAILURE; |
b5e300c2 | 666 | u_int32_t id; |
667 | ||
668 | id = get_int(); | |
669 | path = get_string(NULL); | |
9906a836 | 670 | TRACE("opendir id %u path %s", id, path); |
2b87da3b | 671 | dirp = opendir(path); |
b5e300c2 | 672 | if (dirp == NULL) { |
673 | status = errno_to_portable(errno); | |
674 | } else { | |
3e2f2431 | 675 | handle = handle_new(HANDLE_DIR, path, 0, dirp); |
b5e300c2 | 676 | if (handle < 0) { |
677 | closedir(dirp); | |
678 | } else { | |
679 | send_handle(id, handle); | |
f546c780 | 680 | status = SSH2_FX_OK; |
b5e300c2 | 681 | } |
2b87da3b | 682 | |
b5e300c2 | 683 | } |
f546c780 | 684 | if (status != SSH2_FX_OK) |
b5e300c2 | 685 | send_status(id, status); |
686 | xfree(path); | |
687 | } | |
688 | ||
396c147e | 689 | static void |
b5e300c2 | 690 | process_readdir(void) |
691 | { | |
692 | DIR *dirp; | |
693 | struct dirent *dp; | |
694 | char *path; | |
695 | int handle; | |
696 | u_int32_t id; | |
697 | ||
698 | id = get_int(); | |
699 | handle = get_handle(); | |
9906a836 | 700 | TRACE("readdir id %u handle %d", id, handle); |
b5e300c2 | 701 | dirp = handle_to_dir(handle); |
702 | path = handle_to_name(handle); | |
703 | if (dirp == NULL || path == NULL) { | |
f546c780 | 704 | send_status(id, SSH2_FX_FAILURE); |
b5e300c2 | 705 | } else { |
b5e300c2 | 706 | struct stat st; |
707 | char pathname[1024]; | |
708 | Stat *stats; | |
709 | int nstats = 10, count = 0, i; | |
9906a836 | 710 | |
b5e300c2 | 711 | stats = xmalloc(nstats * sizeof(Stat)); |
712 | while ((dp = readdir(dirp)) != NULL) { | |
713 | if (count >= nstats) { | |
714 | nstats *= 2; | |
715 | stats = xrealloc(stats, nstats * sizeof(Stat)); | |
716 | } | |
717 | /* XXX OVERFLOW ? */ | |
88690211 | 718 | snprintf(pathname, sizeof pathname, "%s%s%s", path, |
719 | strcmp(path, "/") ? "/" : "", dp->d_name); | |
b5e300c2 | 720 | if (lstat(pathname, &st) < 0) |
721 | continue; | |
b5c334cc | 722 | stat_to_attrib(&st, &(stats[count].attrib)); |
b5e300c2 | 723 | stats[count].name = xstrdup(dp->d_name); |
00b3ad3e | 724 | stats[count].long_name = ls_file(dp->d_name, &st, 0); |
b5e300c2 | 725 | count++; |
726 | /* send up to 100 entries in one message */ | |
b5c334cc | 727 | /* XXX check packet size instead */ |
b5e300c2 | 728 | if (count == 100) |
729 | break; | |
730 | } | |
f546c780 | 731 | if (count > 0) { |
732 | send_names(id, count, stats); | |
184eed6a | 733 | for (i = 0; i < count; i++) { |
f546c780 | 734 | xfree(stats[i].name); |
735 | xfree(stats[i].long_name); | |
736 | } | |
737 | } else { | |
738 | send_status(id, SSH2_FX_EOF); | |
b5e300c2 | 739 | } |
740 | xfree(stats); | |
741 | } | |
742 | } | |
743 | ||
396c147e | 744 | static void |
b5e300c2 | 745 | process_remove(void) |
746 | { | |
747 | char *name; | |
748 | u_int32_t id; | |
f546c780 | 749 | int status = SSH2_FX_FAILURE; |
b5e300c2 | 750 | int ret; |
751 | ||
752 | id = get_int(); | |
753 | name = get_string(NULL); | |
9906a836 | 754 | TRACE("remove id %u name %s", id, name); |
67b0facb | 755 | ret = unlink(name); |
f546c780 | 756 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 757 | send_status(id, status); |
758 | xfree(name); | |
759 | } | |
760 | ||
396c147e | 761 | static void |
b5e300c2 | 762 | process_mkdir(void) |
763 | { | |
764 | Attrib *a; | |
765 | u_int32_t id; | |
766 | char *name; | |
f546c780 | 767 | int ret, mode, status = SSH2_FX_FAILURE; |
b5e300c2 | 768 | |
769 | id = get_int(); | |
770 | name = get_string(NULL); | |
771 | a = get_attrib(); | |
f546c780 | 772 | mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? |
773 | a->perm & 0777 : 0777; | |
9906a836 | 774 | TRACE("mkdir id %u name %s mode 0%o", id, name, mode); |
b5e300c2 | 775 | ret = mkdir(name, mode); |
f546c780 | 776 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 777 | send_status(id, status); |
778 | xfree(name); | |
779 | } | |
780 | ||
396c147e | 781 | static void |
b5e300c2 | 782 | process_rmdir(void) |
783 | { | |
784 | u_int32_t id; | |
785 | char *name; | |
786 | int ret, status; | |
787 | ||
788 | id = get_int(); | |
789 | name = get_string(NULL); | |
9906a836 | 790 | TRACE("rmdir id %u name %s", id, name); |
b5e300c2 | 791 | ret = rmdir(name); |
f546c780 | 792 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 793 | send_status(id, status); |
794 | xfree(name); | |
795 | } | |
796 | ||
396c147e | 797 | static void |
b5e300c2 | 798 | process_realpath(void) |
799 | { | |
800 | char resolvedname[MAXPATHLEN]; | |
801 | u_int32_t id; | |
802 | char *path; | |
803 | ||
804 | id = get_int(); | |
805 | path = get_string(NULL); | |
6b523bae | 806 | if (path[0] == '\0') { |
807 | xfree(path); | |
808 | path = xstrdup("."); | |
809 | } | |
9906a836 | 810 | TRACE("realpath id %u path %s", id, path); |
b5e300c2 | 811 | if (realpath(path, resolvedname) == NULL) { |
812 | send_status(id, errno_to_portable(errno)); | |
813 | } else { | |
814 | Stat s; | |
815 | attrib_clear(&s.attrib); | |
816 | s.name = s.long_name = resolvedname; | |
817 | send_names(id, 1, &s); | |
818 | } | |
819 | xfree(path); | |
820 | } | |
821 | ||
396c147e | 822 | static void |
b5e300c2 | 823 | process_rename(void) |
824 | { | |
825 | u_int32_t id; | |
826 | char *oldpath, *newpath; | |
f2f28f1f | 827 | int status; |
fd77a40f | 828 | struct stat sb; |
b5e300c2 | 829 | |
830 | id = get_int(); | |
831 | oldpath = get_string(NULL); | |
832 | newpath = get_string(NULL); | |
9906a836 | 833 | TRACE("rename id %u old %s new %s", id, oldpath, newpath); |
fd77a40f | 834 | status = SSH2_FX_FAILURE; |
835 | if (lstat(oldpath, &sb) == -1) | |
f2f28f1f | 836 | status = errno_to_portable(errno); |
fd77a40f | 837 | else if (S_ISREG(sb.st_mode)) { |
838 | /* Race-free rename of regular files */ | |
dc5888bf | 839 | if (link(oldpath, newpath) == -1) { |
cd698186 | 840 | if (errno == EOPNOTSUPP |
841 | #ifdef LINK_OPNOTSUPP_ERRNO | |
842 | || errno == LINK_OPNOTSUPP_ERRNO | |
843 | #endif | |
844 | ) { | |
dc5888bf | 845 | struct stat st; |
846 | ||
847 | /* | |
848 | * fs doesn't support links, so fall back to | |
849 | * stat+rename. This is racy. | |
850 | */ | |
851 | if (stat(newpath, &st) == -1) { | |
852 | if (rename(oldpath, newpath) == -1) | |
853 | status = | |
854 | errno_to_portable(errno); | |
855 | else | |
856 | status = SSH2_FX_OK; | |
857 | } | |
858 | } else { | |
859 | status = errno_to_portable(errno); | |
860 | } | |
861 | } else if (unlink(oldpath) == -1) { | |
fd77a40f | 862 | status = errno_to_portable(errno); |
863 | /* clean spare link */ | |
864 | unlink(newpath); | |
865 | } else | |
866 | status = SSH2_FX_OK; | |
867 | } else if (stat(newpath, &sb) == -1) { | |
868 | if (rename(oldpath, newpath) == -1) | |
869 | status = errno_to_portable(errno); | |
870 | else | |
871 | status = SSH2_FX_OK; | |
872 | } | |
b5e300c2 | 873 | send_status(id, status); |
874 | xfree(oldpath); | |
875 | xfree(newpath); | |
876 | } | |
877 | ||
396c147e | 878 | static void |
3a7fe5ba | 879 | process_readlink(void) |
880 | { | |
881 | u_int32_t id; | |
362df52e | 882 | int len; |
ca75d7de | 883 | char buf[MAXPATHLEN]; |
3a7fe5ba | 884 | char *path; |
885 | ||
886 | id = get_int(); | |
887 | path = get_string(NULL); | |
9906a836 | 888 | TRACE("readlink id %u path %s", id, path); |
ca75d7de | 889 | if ((len = readlink(path, buf, sizeof(buf) - 1)) == -1) |
3a7fe5ba | 890 | send_status(id, errno_to_portable(errno)); |
891 | else { | |
892 | Stat s; | |
184eed6a | 893 | |
ca75d7de | 894 | buf[len] = '\0'; |
3a7fe5ba | 895 | attrib_clear(&s.attrib); |
ca75d7de | 896 | s.name = s.long_name = buf; |
3a7fe5ba | 897 | send_names(id, 1, &s); |
898 | } | |
899 | xfree(path); | |
900 | } | |
901 | ||
396c147e | 902 | static void |
3a7fe5ba | 903 | process_symlink(void) |
904 | { | |
905 | u_int32_t id; | |
3a7fe5ba | 906 | char *oldpath, *newpath; |
f2f28f1f | 907 | int ret, status; |
3a7fe5ba | 908 | |
909 | id = get_int(); | |
910 | oldpath = get_string(NULL); | |
911 | newpath = get_string(NULL); | |
9906a836 | 912 | TRACE("symlink id %u old %s new %s", id, oldpath, newpath); |
f2f28f1f | 913 | /* this will fail if 'newpath' exists */ |
914 | ret = symlink(oldpath, newpath); | |
915 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; | |
3a7fe5ba | 916 | send_status(id, status); |
917 | xfree(oldpath); | |
918 | xfree(newpath); | |
919 | } | |
920 | ||
396c147e | 921 | static void |
f546c780 | 922 | process_extended(void) |
923 | { | |
924 | u_int32_t id; | |
925 | char *request; | |
926 | ||
927 | id = get_int(); | |
928 | request = get_string(NULL); | |
929 | send_status(id, SSH2_FX_OP_UNSUPPORTED); /* MUST */ | |
930 | xfree(request); | |
931 | } | |
b5e300c2 | 932 | |
933 | /* stolen from ssh-agent */ | |
934 | ||
396c147e | 935 | static void |
b5e300c2 | 936 | process(void) |
937 | { | |
1e3b8b07 | 938 | u_int msg_len; |
9b4ac641 | 939 | u_int buf_len; |
940 | u_int consumed; | |
1e3b8b07 | 941 | u_int type; |
942 | u_char *cp; | |
b5e300c2 | 943 | |
9b4ac641 | 944 | buf_len = buffer_len(&iqueue); |
945 | if (buf_len < 5) | |
b5e300c2 | 946 | return; /* Incomplete message. */ |
20905a8e | 947 | cp = buffer_ptr(&iqueue); |
b5e300c2 | 948 | msg_len = GET_32BIT(cp); |
949 | if (msg_len > 256 * 1024) { | |
950 | error("bad message "); | |
951 | exit(11); | |
952 | } | |
9b4ac641 | 953 | if (buf_len < msg_len + 4) |
b5e300c2 | 954 | return; |
955 | buffer_consume(&iqueue, 4); | |
9b4ac641 | 956 | buf_len -= 4; |
b5e300c2 | 957 | type = buffer_get_char(&iqueue); |
958 | switch (type) { | |
f546c780 | 959 | case SSH2_FXP_INIT: |
b5e300c2 | 960 | process_init(); |
961 | break; | |
f546c780 | 962 | case SSH2_FXP_OPEN: |
b5e300c2 | 963 | process_open(); |
964 | break; | |
f546c780 | 965 | case SSH2_FXP_CLOSE: |
b5e300c2 | 966 | process_close(); |
967 | break; | |
f546c780 | 968 | case SSH2_FXP_READ: |
b5e300c2 | 969 | process_read(); |
970 | break; | |
f546c780 | 971 | case SSH2_FXP_WRITE: |
b5e300c2 | 972 | process_write(); |
973 | break; | |
f546c780 | 974 | case SSH2_FXP_LSTAT: |
b5e300c2 | 975 | process_lstat(); |
976 | break; | |
f546c780 | 977 | case SSH2_FXP_FSTAT: |
b5e300c2 | 978 | process_fstat(); |
979 | break; | |
f546c780 | 980 | case SSH2_FXP_SETSTAT: |
b5e300c2 | 981 | process_setstat(); |
982 | break; | |
f546c780 | 983 | case SSH2_FXP_FSETSTAT: |
b5e300c2 | 984 | process_fsetstat(); |
985 | break; | |
f546c780 | 986 | case SSH2_FXP_OPENDIR: |
b5e300c2 | 987 | process_opendir(); |
988 | break; | |
f546c780 | 989 | case SSH2_FXP_READDIR: |
b5e300c2 | 990 | process_readdir(); |
991 | break; | |
f546c780 | 992 | case SSH2_FXP_REMOVE: |
b5e300c2 | 993 | process_remove(); |
994 | break; | |
f546c780 | 995 | case SSH2_FXP_MKDIR: |
b5e300c2 | 996 | process_mkdir(); |
997 | break; | |
f546c780 | 998 | case SSH2_FXP_RMDIR: |
b5e300c2 | 999 | process_rmdir(); |
1000 | break; | |
f546c780 | 1001 | case SSH2_FXP_REALPATH: |
b5e300c2 | 1002 | process_realpath(); |
1003 | break; | |
f546c780 | 1004 | case SSH2_FXP_STAT: |
b5e300c2 | 1005 | process_stat(); |
1006 | break; | |
f546c780 | 1007 | case SSH2_FXP_RENAME: |
b5e300c2 | 1008 | process_rename(); |
1009 | break; | |
3a7fe5ba | 1010 | case SSH2_FXP_READLINK: |
1011 | process_readlink(); | |
1012 | break; | |
1013 | case SSH2_FXP_SYMLINK: | |
1014 | process_symlink(); | |
1015 | break; | |
f546c780 | 1016 | case SSH2_FXP_EXTENDED: |
1017 | process_extended(); | |
1018 | break; | |
b5e300c2 | 1019 | default: |
1020 | error("Unknown message %d", type); | |
1021 | break; | |
1022 | } | |
9b4ac641 | 1023 | /* discard the remaining bytes from the current packet */ |
1024 | if (buf_len < buffer_len(&iqueue)) | |
1025 | fatal("iqueue grows"); | |
1026 | consumed = buf_len - buffer_len(&iqueue); | |
1027 | if (msg_len < consumed) | |
1028 | fatal("msg_len %d < consumed %d", msg_len, consumed); | |
1029 | if (msg_len > consumed) | |
1030 | buffer_consume(&iqueue, msg_len - consumed); | |
b5e300c2 | 1031 | } |
1032 | ||
1033 | int | |
1034 | main(int ac, char **av) | |
1035 | { | |
c8d75031 | 1036 | fd_set *rset, *wset; |
b5e300c2 | 1037 | int in, out, max; |
c8d75031 | 1038 | ssize_t len, olen, set_size; |
b5e300c2 | 1039 | |
fd6168c1 | 1040 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
1041 | sanitise_stdfd(); | |
1042 | ||
61b3a2bc | 1043 | /* XXX should use getopt */ |
1044 | ||
fda04d7d | 1045 | __progname = ssh_get_progname(av[0]); |
b5e300c2 | 1046 | handle_init(); |
1047 | ||
b5c334cc | 1048 | #ifdef DEBUG_SFTP_SERVER |
2b87da3b | 1049 | log_init("sftp-server", SYSLOG_LEVEL_DEBUG1, SYSLOG_FACILITY_AUTH, 0); |
b5c334cc | 1050 | #endif |
f546c780 | 1051 | |
b5e300c2 | 1052 | in = dup(STDIN_FILENO); |
1053 | out = dup(STDOUT_FILENO); | |
1054 | ||
fe56c12b | 1055 | #ifdef HAVE_CYGWIN |
1056 | setmode(in, O_BINARY); | |
1057 | setmode(out, O_BINARY); | |
1058 | #endif | |
1059 | ||
b5e300c2 | 1060 | max = 0; |
1061 | if (in > max) | |
1062 | max = in; | |
1063 | if (out > max) | |
1064 | max = out; | |
1065 | ||
1066 | buffer_init(&iqueue); | |
1067 | buffer_init(&oqueue); | |
1068 | ||
c8d75031 | 1069 | set_size = howmany(max + 1, NFDBITS) * sizeof(fd_mask); |
1070 | rset = (fd_set *)xmalloc(set_size); | |
1071 | wset = (fd_set *)xmalloc(set_size); | |
1072 | ||
b5e300c2 | 1073 | for (;;) { |
c8d75031 | 1074 | memset(rset, 0, set_size); |
1075 | memset(wset, 0, set_size); | |
b5e300c2 | 1076 | |
c8d75031 | 1077 | FD_SET(in, rset); |
b5e300c2 | 1078 | olen = buffer_len(&oqueue); |
1079 | if (olen > 0) | |
c8d75031 | 1080 | FD_SET(out, wset); |
b5e300c2 | 1081 | |
c8d75031 | 1082 | if (select(max+1, rset, wset, NULL, NULL) < 0) { |
b5e300c2 | 1083 | if (errno == EINTR) |
1084 | continue; | |
1085 | exit(2); | |
1086 | } | |
1087 | ||
1088 | /* copy stdin to iqueue */ | |
c8d75031 | 1089 | if (FD_ISSET(in, rset)) { |
b5e300c2 | 1090 | char buf[4*4096]; |
1091 | len = read(in, buf, sizeof buf); | |
1092 | if (len == 0) { | |
1093 | debug("read eof"); | |
1094 | exit(0); | |
1095 | } else if (len < 0) { | |
1096 | error("read error"); | |
1097 | exit(1); | |
1098 | } else { | |
1099 | buffer_append(&iqueue, buf, len); | |
1100 | } | |
1101 | } | |
1102 | /* send oqueue to stdout */ | |
c8d75031 | 1103 | if (FD_ISSET(out, wset)) { |
b5e300c2 | 1104 | len = write(out, buffer_ptr(&oqueue), olen); |
1105 | if (len < 0) { | |
1106 | error("write error"); | |
1107 | exit(1); | |
1108 | } else { | |
1109 | buffer_consume(&oqueue, len); | |
1110 | } | |
1111 | } | |
1112 | /* process requests from client */ | |
1113 | process(); | |
1114 | } | |
1115 | } |