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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" | |
dc5888bf | 17 | RCSID("$OpenBSD: sftp-server.c,v 1.47 2004/06/25 05:38:48 dtucker 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" |
24 | ||
f546c780 | 25 | #include "sftp.h" |
61e96248 | 26 | #include "sftp-common.h" |
b5e300c2 | 27 | |
28 | /* helper */ | |
f546c780 | 29 | #define get_int64() buffer_get_int64(&iqueue); |
b5e300c2 | 30 | #define get_int() buffer_get_int(&iqueue); |
31 | #define get_string(lenp) buffer_get_string(&iqueue, lenp); | |
f546c780 | 32 | #define TRACE debug |
b5e300c2 | 33 | |
260d427b | 34 | extern char *__progname; |
260d427b | 35 | |
b5e300c2 | 36 | /* input and output queue */ |
37 | Buffer iqueue; | |
38 | Buffer oqueue; | |
39 | ||
3a7fe5ba | 40 | /* Version of client */ |
41 | int version; | |
42 | ||
d7ded285 | 43 | /* portable attributes, etc. */ |
b5e300c2 | 44 | |
b5e300c2 | 45 | typedef struct Stat Stat; |
46 | ||
61e96248 | 47 | struct Stat { |
b5e300c2 | 48 | char *name; |
49 | char *long_name; | |
50 | Attrib attrib; | |
51 | }; | |
52 | ||
396c147e | 53 | static int |
b5e300c2 | 54 | errno_to_portable(int unixerrno) |
55 | { | |
56 | int ret = 0; | |
dce9bac5 | 57 | |
b5e300c2 | 58 | switch (unixerrno) { |
59 | case 0: | |
f546c780 | 60 | ret = SSH2_FX_OK; |
b5e300c2 | 61 | break; |
62 | case ENOENT: | |
63 | case ENOTDIR: | |
64 | case EBADF: | |
65 | case ELOOP: | |
f546c780 | 66 | ret = SSH2_FX_NO_SUCH_FILE; |
b5e300c2 | 67 | break; |
68 | case EPERM: | |
69 | case EACCES: | |
70 | case EFAULT: | |
f546c780 | 71 | ret = SSH2_FX_PERMISSION_DENIED; |
b5e300c2 | 72 | break; |
73 | case ENAMETOOLONG: | |
74 | case EINVAL: | |
f546c780 | 75 | ret = SSH2_FX_BAD_MESSAGE; |
b5e300c2 | 76 | break; |
77 | default: | |
f546c780 | 78 | ret = SSH2_FX_FAILURE; |
b5e300c2 | 79 | break; |
80 | } | |
81 | return ret; | |
82 | } | |
83 | ||
396c147e | 84 | static int |
b5e300c2 | 85 | flags_from_portable(int pflags) |
86 | { | |
87 | int flags = 0; | |
dce9bac5 | 88 | |
79ddf6db | 89 | if ((pflags & SSH2_FXF_READ) && |
90 | (pflags & SSH2_FXF_WRITE)) { | |
b5e300c2 | 91 | flags = O_RDWR; |
f546c780 | 92 | } else if (pflags & SSH2_FXF_READ) { |
b5e300c2 | 93 | flags = O_RDONLY; |
f546c780 | 94 | } else if (pflags & SSH2_FXF_WRITE) { |
b5e300c2 | 95 | flags = O_WRONLY; |
96 | } | |
f546c780 | 97 | if (pflags & SSH2_FXF_CREAT) |
b5e300c2 | 98 | flags |= O_CREAT; |
f546c780 | 99 | if (pflags & SSH2_FXF_TRUNC) |
b5e300c2 | 100 | flags |= O_TRUNC; |
f546c780 | 101 | if (pflags & SSH2_FXF_EXCL) |
b5e300c2 | 102 | flags |= O_EXCL; |
103 | return flags; | |
104 | } | |
105 | ||
396c147e | 106 | static Attrib * |
b5e300c2 | 107 | get_attrib(void) |
108 | { | |
109 | return decode_attrib(&iqueue); | |
110 | } | |
111 | ||
112 | /* handle handles */ | |
113 | ||
114 | typedef struct Handle Handle; | |
115 | struct Handle { | |
116 | int use; | |
117 | DIR *dirp; | |
118 | int fd; | |
119 | char *name; | |
120 | }; | |
dce9bac5 | 121 | |
b5e300c2 | 122 | enum { |
123 | HANDLE_UNUSED, | |
124 | HANDLE_DIR, | |
125 | HANDLE_FILE | |
126 | }; | |
dce9bac5 | 127 | |
b5e300c2 | 128 | Handle handles[100]; |
129 | ||
396c147e | 130 | static void |
b5e300c2 | 131 | handle_init(void) |
132 | { | |
133 | int i; | |
dce9bac5 | 134 | |
184eed6a | 135 | for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) |
b5e300c2 | 136 | handles[i].use = HANDLE_UNUSED; |
137 | } | |
138 | ||
396c147e | 139 | static int |
b6c7b7b7 | 140 | handle_new(int use, const char *name, int fd, DIR *dirp) |
b5e300c2 | 141 | { |
142 | int i; | |
dce9bac5 | 143 | |
184eed6a | 144 | for (i = 0; i < sizeof(handles)/sizeof(Handle); i++) { |
b5e300c2 | 145 | if (handles[i].use == HANDLE_UNUSED) { |
146 | handles[i].use = use; | |
147 | handles[i].dirp = dirp; | |
148 | handles[i].fd = fd; | |
3e2f2431 | 149 | handles[i].name = xstrdup(name); |
b5e300c2 | 150 | return i; |
151 | } | |
152 | } | |
153 | return -1; | |
154 | } | |
155 | ||
396c147e | 156 | static int |
b5e300c2 | 157 | handle_is_ok(int i, int type) |
158 | { | |
f546c780 | 159 | return i >= 0 && i < sizeof(handles)/sizeof(Handle) && |
160 | handles[i].use == type; | |
b5e300c2 | 161 | } |
162 | ||
396c147e | 163 | static int |
b5e300c2 | 164 | handle_to_string(int handle, char **stringp, int *hlenp) |
165 | { | |
b5e300c2 | 166 | if (stringp == NULL || hlenp == NULL) |
167 | return -1; | |
b5c334cc | 168 | *stringp = xmalloc(sizeof(int32_t)); |
169 | PUT_32BIT(*stringp, handle); | |
170 | *hlenp = sizeof(int32_t); | |
b5e300c2 | 171 | return 0; |
172 | } | |
173 | ||
396c147e | 174 | static int |
b6c7b7b7 | 175 | handle_from_string(const char *handle, u_int hlen) |
b5e300c2 | 176 | { |
b5c334cc | 177 | int val; |
dce9bac5 | 178 | |
b5c334cc | 179 | if (hlen != sizeof(int32_t)) |
b5e300c2 | 180 | return -1; |
b5c334cc | 181 | val = GET_32BIT(handle); |
b5e300c2 | 182 | if (handle_is_ok(val, HANDLE_FILE) || |
183 | handle_is_ok(val, HANDLE_DIR)) | |
184 | return val; | |
185 | return -1; | |
186 | } | |
187 | ||
396c147e | 188 | static char * |
b5e300c2 | 189 | handle_to_name(int handle) |
190 | { | |
191 | if (handle_is_ok(handle, HANDLE_DIR)|| | |
192 | handle_is_ok(handle, HANDLE_FILE)) | |
193 | return handles[handle].name; | |
194 | return NULL; | |
195 | } | |
196 | ||
396c147e | 197 | static DIR * |
b5e300c2 | 198 | handle_to_dir(int handle) |
199 | { | |
200 | if (handle_is_ok(handle, HANDLE_DIR)) | |
201 | return handles[handle].dirp; | |
202 | return NULL; | |
203 | } | |
204 | ||
396c147e | 205 | static int |
b5e300c2 | 206 | handle_to_fd(int handle) |
207 | { | |
2b87da3b | 208 | if (handle_is_ok(handle, HANDLE_FILE)) |
b5e300c2 | 209 | return handles[handle].fd; |
210 | return -1; | |
211 | } | |
212 | ||
396c147e | 213 | static int |
b5e300c2 | 214 | handle_close(int handle) |
215 | { | |
216 | int ret = -1; | |
dce9bac5 | 217 | |
b5e300c2 | 218 | if (handle_is_ok(handle, HANDLE_FILE)) { |
219 | ret = close(handles[handle].fd); | |
220 | handles[handle].use = HANDLE_UNUSED; | |
3e2f2431 | 221 | xfree(handles[handle].name); |
b5e300c2 | 222 | } else if (handle_is_ok(handle, HANDLE_DIR)) { |
223 | ret = closedir(handles[handle].dirp); | |
224 | handles[handle].use = HANDLE_UNUSED; | |
3e2f2431 | 225 | xfree(handles[handle].name); |
b5e300c2 | 226 | } else { |
227 | errno = ENOENT; | |
228 | } | |
229 | return ret; | |
230 | } | |
231 | ||
396c147e | 232 | static int |
b5e300c2 | 233 | get_handle(void) |
234 | { | |
235 | char *handle; | |
f546c780 | 236 | int val = -1; |
bcbf86ec | 237 | u_int hlen; |
dce9bac5 | 238 | |
b5e300c2 | 239 | handle = get_string(&hlen); |
f546c780 | 240 | if (hlen < 256) |
241 | val = handle_from_string(handle, hlen); | |
b5e300c2 | 242 | xfree(handle); |
243 | return val; | |
244 | } | |
245 | ||
246 | /* send replies */ | |
247 | ||
396c147e | 248 | static void |
b5e300c2 | 249 | send_msg(Buffer *m) |
250 | { | |
251 | int mlen = buffer_len(m); | |
dce9bac5 | 252 | |
b5e300c2 | 253 | buffer_put_int(&oqueue, mlen); |
254 | buffer_append(&oqueue, buffer_ptr(m), mlen); | |
255 | buffer_consume(m, mlen); | |
256 | } | |
257 | ||
396c147e | 258 | static void |
ca75d7de | 259 | send_status(u_int32_t id, u_int32_t status) |
b5e300c2 | 260 | { |
261 | Buffer msg; | |
3a7fe5ba | 262 | const char *status_messages[] = { |
263 | "Success", /* SSH_FX_OK */ | |
264 | "End of file", /* SSH_FX_EOF */ | |
265 | "No such file", /* SSH_FX_NO_SUCH_FILE */ | |
266 | "Permission denied", /* SSH_FX_PERMISSION_DENIED */ | |
267 | "Failure", /* SSH_FX_FAILURE */ | |
268 | "Bad message", /* SSH_FX_BAD_MESSAGE */ | |
269 | "No connection", /* SSH_FX_NO_CONNECTION */ | |
270 | "Connection lost", /* SSH_FX_CONNECTION_LOST */ | |
271 | "Operation unsupported", /* SSH_FX_OP_UNSUPPORTED */ | |
272 | "Unknown error" /* Others */ | |
273 | }; | |
dce9bac5 | 274 | |
ca75d7de | 275 | TRACE("sent status id %u error %u", id, status); |
b5e300c2 | 276 | buffer_init(&msg); |
f546c780 | 277 | buffer_put_char(&msg, SSH2_FXP_STATUS); |
b5e300c2 | 278 | buffer_put_int(&msg, id); |
ca75d7de | 279 | buffer_put_int(&msg, status); |
3a7fe5ba | 280 | if (version >= 3) { |
cd332296 | 281 | buffer_put_cstring(&msg, |
ca75d7de | 282 | status_messages[MIN(status,SSH2_FX_MAX)]); |
3a7fe5ba | 283 | buffer_put_cstring(&msg, ""); |
284 | } | |
b5e300c2 | 285 | send_msg(&msg); |
286 | buffer_free(&msg); | |
287 | } | |
396c147e | 288 | static void |
b6c7b7b7 | 289 | send_data_or_handle(char type, u_int32_t id, const char *data, int dlen) |
b5e300c2 | 290 | { |
291 | Buffer msg; | |
dce9bac5 | 292 | |
b5e300c2 | 293 | buffer_init(&msg); |
294 | buffer_put_char(&msg, type); | |
295 | buffer_put_int(&msg, id); | |
296 | buffer_put_string(&msg, data, dlen); | |
297 | send_msg(&msg); | |
298 | buffer_free(&msg); | |
299 | } | |
300 | ||
396c147e | 301 | static void |
b6c7b7b7 | 302 | send_data(u_int32_t id, const char *data, int dlen) |
b5e300c2 | 303 | { |
9906a836 | 304 | TRACE("sent data id %u len %d", id, dlen); |
f546c780 | 305 | send_data_or_handle(SSH2_FXP_DATA, id, data, dlen); |
b5e300c2 | 306 | } |
307 | ||
396c147e | 308 | static void |
b5e300c2 | 309 | send_handle(u_int32_t id, int handle) |
310 | { | |
311 | char *string; | |
312 | int hlen; | |
dce9bac5 | 313 | |
b5e300c2 | 314 | handle_to_string(handle, &string, &hlen); |
9906a836 | 315 | TRACE("sent handle id %u handle %d", id, handle); |
f546c780 | 316 | send_data_or_handle(SSH2_FXP_HANDLE, id, string, hlen); |
b5e300c2 | 317 | xfree(string); |
318 | } | |
319 | ||
396c147e | 320 | static void |
b6c7b7b7 | 321 | send_names(u_int32_t id, int count, const Stat *stats) |
b5e300c2 | 322 | { |
323 | Buffer msg; | |
324 | int i; | |
dce9bac5 | 325 | |
b5e300c2 | 326 | buffer_init(&msg); |
f546c780 | 327 | buffer_put_char(&msg, SSH2_FXP_NAME); |
b5e300c2 | 328 | buffer_put_int(&msg, id); |
329 | buffer_put_int(&msg, count); | |
9906a836 | 330 | TRACE("sent names id %u count %d", id, count); |
b5e300c2 | 331 | for (i = 0; i < count; i++) { |
332 | buffer_put_cstring(&msg, stats[i].name); | |
333 | buffer_put_cstring(&msg, stats[i].long_name); | |
334 | encode_attrib(&msg, &stats[i].attrib); | |
335 | } | |
336 | send_msg(&msg); | |
337 | buffer_free(&msg); | |
338 | } | |
339 | ||
396c147e | 340 | static void |
b6c7b7b7 | 341 | send_attrib(u_int32_t id, const Attrib *a) |
b5e300c2 | 342 | { |
343 | Buffer msg; | |
dce9bac5 | 344 | |
9906a836 | 345 | TRACE("sent attrib id %u have 0x%x", id, a->flags); |
b5e300c2 | 346 | buffer_init(&msg); |
f546c780 | 347 | buffer_put_char(&msg, SSH2_FXP_ATTRS); |
b5e300c2 | 348 | buffer_put_int(&msg, id); |
349 | encode_attrib(&msg, a); | |
350 | send_msg(&msg); | |
351 | buffer_free(&msg); | |
352 | } | |
353 | ||
354 | /* parse incoming */ | |
355 | ||
396c147e | 356 | static void |
b5e300c2 | 357 | process_init(void) |
358 | { | |
359 | Buffer msg; | |
b5e300c2 | 360 | |
802d93bb | 361 | version = get_int(); |
b5e300c2 | 362 | TRACE("client version %d", version); |
363 | buffer_init(&msg); | |
f546c780 | 364 | buffer_put_char(&msg, SSH2_FXP_VERSION); |
365 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
b5e300c2 | 366 | send_msg(&msg); |
367 | buffer_free(&msg); | |
368 | } | |
369 | ||
396c147e | 370 | static void |
b5e300c2 | 371 | process_open(void) |
372 | { | |
373 | u_int32_t id, pflags; | |
374 | Attrib *a; | |
375 | char *name; | |
f546c780 | 376 | int handle, fd, flags, mode, status = SSH2_FX_FAILURE; |
b5e300c2 | 377 | |
378 | id = get_int(); | |
379 | name = get_string(NULL); | |
f546c780 | 380 | pflags = get_int(); /* portable flags */ |
b5e300c2 | 381 | a = get_attrib(); |
382 | flags = flags_from_portable(pflags); | |
f546c780 | 383 | mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? a->perm : 0666; |
9906a836 | 384 | TRACE("open id %u name %s flags %d mode 0%o", id, name, pflags, mode); |
b5e300c2 | 385 | fd = open(name, flags, mode); |
386 | if (fd < 0) { | |
387 | status = errno_to_portable(errno); | |
388 | } else { | |
3e2f2431 | 389 | handle = handle_new(HANDLE_FILE, name, fd, NULL); |
b5e300c2 | 390 | if (handle < 0) { |
391 | close(fd); | |
392 | } else { | |
393 | send_handle(id, handle); | |
f546c780 | 394 | status = SSH2_FX_OK; |
b5e300c2 | 395 | } |
396 | } | |
f546c780 | 397 | if (status != SSH2_FX_OK) |
b5e300c2 | 398 | send_status(id, status); |
399 | xfree(name); | |
400 | } | |
401 | ||
396c147e | 402 | static void |
b5e300c2 | 403 | process_close(void) |
404 | { | |
405 | u_int32_t id; | |
f546c780 | 406 | int handle, ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 407 | |
408 | id = get_int(); | |
409 | handle = get_handle(); | |
9906a836 | 410 | TRACE("close id %u handle %d", id, handle); |
b5e300c2 | 411 | ret = handle_close(handle); |
f546c780 | 412 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 413 | send_status(id, status); |
414 | } | |
415 | ||
396c147e | 416 | static void |
b5e300c2 | 417 | process_read(void) |
418 | { | |
419 | char buf[64*1024]; | |
f546c780 | 420 | u_int32_t id, len; |
421 | int handle, fd, ret, status = SSH2_FX_FAILURE; | |
b5e300c2 | 422 | u_int64_t off; |
423 | ||
424 | id = get_int(); | |
425 | handle = get_handle(); | |
f546c780 | 426 | off = get_int64(); |
b5e300c2 | 427 | len = get_int(); |
428 | ||
9906a836 | 429 | TRACE("read id %u handle %d off %llu len %d", id, handle, |
490cad94 | 430 | (u_int64_t)off, len); |
b5e300c2 | 431 | if (len > sizeof buf) { |
432 | len = sizeof buf; | |
bbe88b6d | 433 | logit("read change len %d", len); |
b5e300c2 | 434 | } |
435 | fd = handle_to_fd(handle); | |
436 | if (fd >= 0) { | |
437 | if (lseek(fd, off, SEEK_SET) < 0) { | |
438 | error("process_read: seek failed"); | |
439 | status = errno_to_portable(errno); | |
440 | } else { | |
441 | ret = read(fd, buf, len); | |
442 | if (ret < 0) { | |
443 | status = errno_to_portable(errno); | |
444 | } else if (ret == 0) { | |
f546c780 | 445 | status = SSH2_FX_EOF; |
b5e300c2 | 446 | } else { |
447 | send_data(id, buf, ret); | |
f546c780 | 448 | status = SSH2_FX_OK; |
b5e300c2 | 449 | } |
450 | } | |
451 | } | |
f546c780 | 452 | if (status != SSH2_FX_OK) |
b5e300c2 | 453 | send_status(id, status); |
454 | } | |
455 | ||
396c147e | 456 | static void |
b5e300c2 | 457 | process_write(void) |
458 | { | |
f546c780 | 459 | u_int32_t id; |
b5e300c2 | 460 | u_int64_t off; |
bcbf86ec | 461 | u_int len; |
f546c780 | 462 | int handle, fd, ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 463 | char *data; |
464 | ||
465 | id = get_int(); | |
466 | handle = get_handle(); | |
f546c780 | 467 | off = get_int64(); |
b5e300c2 | 468 | data = get_string(&len); |
469 | ||
9906a836 | 470 | TRACE("write id %u handle %d off %llu len %d", id, handle, |
490cad94 | 471 | (u_int64_t)off, len); |
b5e300c2 | 472 | fd = handle_to_fd(handle); |
473 | if (fd >= 0) { | |
474 | if (lseek(fd, off, SEEK_SET) < 0) { | |
475 | status = errno_to_portable(errno); | |
476 | error("process_write: seek failed"); | |
477 | } else { | |
478 | /* XXX ATOMICIO ? */ | |
479 | ret = write(fd, data, len); | |
480 | if (ret == -1) { | |
481 | error("process_write: write failed"); | |
482 | status = errno_to_portable(errno); | |
483 | } else if (ret == len) { | |
f546c780 | 484 | status = SSH2_FX_OK; |
b5e300c2 | 485 | } else { |
bbe88b6d | 486 | logit("nothing at all written"); |
b5e300c2 | 487 | } |
488 | } | |
489 | } | |
490 | send_status(id, status); | |
491 | xfree(data); | |
492 | } | |
493 | ||
396c147e | 494 | static void |
b5e300c2 | 495 | process_do_stat(int do_lstat) |
496 | { | |
b5c334cc | 497 | Attrib a; |
b5e300c2 | 498 | struct stat st; |
499 | u_int32_t id; | |
500 | char *name; | |
f546c780 | 501 | int ret, status = SSH2_FX_FAILURE; |
b5e300c2 | 502 | |
503 | id = get_int(); | |
504 | name = get_string(NULL); | |
9906a836 | 505 | TRACE("%sstat id %u name %s", do_lstat ? "l" : "", id, name); |
b5e300c2 | 506 | ret = do_lstat ? lstat(name, &st) : stat(name, &st); |
507 | if (ret < 0) { | |
508 | status = errno_to_portable(errno); | |
509 | } else { | |
b5c334cc | 510 | stat_to_attrib(&st, &a); |
511 | send_attrib(id, &a); | |
f546c780 | 512 | status = SSH2_FX_OK; |
b5e300c2 | 513 | } |
f546c780 | 514 | if (status != SSH2_FX_OK) |
b5e300c2 | 515 | send_status(id, status); |
516 | xfree(name); | |
517 | } | |
518 | ||
396c147e | 519 | static void |
b5e300c2 | 520 | process_stat(void) |
521 | { | |
522 | process_do_stat(0); | |
523 | } | |
524 | ||
396c147e | 525 | static void |
b5e300c2 | 526 | process_lstat(void) |
527 | { | |
528 | process_do_stat(1); | |
529 | } | |
530 | ||
396c147e | 531 | static void |
b5e300c2 | 532 | process_fstat(void) |
533 | { | |
b5c334cc | 534 | Attrib a; |
b5e300c2 | 535 | struct stat st; |
536 | u_int32_t id; | |
f546c780 | 537 | int fd, ret, handle, status = SSH2_FX_FAILURE; |
b5e300c2 | 538 | |
539 | id = get_int(); | |
540 | handle = get_handle(); | |
9906a836 | 541 | TRACE("fstat id %u handle %d", id, handle); |
b5e300c2 | 542 | fd = handle_to_fd(handle); |
543 | if (fd >= 0) { | |
544 | ret = fstat(fd, &st); | |
545 | if (ret < 0) { | |
546 | status = errno_to_portable(errno); | |
547 | } else { | |
b5c334cc | 548 | stat_to_attrib(&st, &a); |
549 | send_attrib(id, &a); | |
f546c780 | 550 | status = SSH2_FX_OK; |
b5e300c2 | 551 | } |
552 | } | |
f546c780 | 553 | if (status != SSH2_FX_OK) |
b5e300c2 | 554 | send_status(id, status); |
555 | } | |
556 | ||
396c147e | 557 | static struct timeval * |
b6c7b7b7 | 558 | attrib_to_tv(const Attrib *a) |
b5e300c2 | 559 | { |
560 | static struct timeval tv[2]; | |
dce9bac5 | 561 | |
b5e300c2 | 562 | tv[0].tv_sec = a->atime; |
563 | tv[0].tv_usec = 0; | |
564 | tv[1].tv_sec = a->mtime; | |
565 | tv[1].tv_usec = 0; | |
566 | return tv; | |
567 | } | |
568 | ||
396c147e | 569 | static void |
b5e300c2 | 570 | process_setstat(void) |
571 | { | |
572 | Attrib *a; | |
573 | u_int32_t id; | |
574 | char *name; | |
9906a836 | 575 | int status = SSH2_FX_OK, ret; |
b5e300c2 | 576 | |
577 | id = get_int(); | |
578 | name = get_string(NULL); | |
579 | a = get_attrib(); | |
9906a836 | 580 | TRACE("setstat id %u name %s", id, name); |
cb476289 | 581 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) { |
582 | ret = truncate(name, a->size); | |
583 | if (ret == -1) | |
584 | status = errno_to_portable(errno); | |
585 | } | |
f546c780 | 586 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) { |
b5e300c2 | 587 | ret = chmod(name, a->perm & 0777); |
588 | if (ret == -1) | |
589 | status = errno_to_portable(errno); | |
590 | } | |
f546c780 | 591 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { |
b5e300c2 | 592 | ret = utimes(name, attrib_to_tv(a)); |
593 | if (ret == -1) | |
594 | status = errno_to_portable(errno); | |
595 | } | |
408ba72f | 596 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) { |
597 | ret = chown(name, a->uid, a->gid); | |
598 | if (ret == -1) | |
599 | status = errno_to_portable(errno); | |
600 | } | |
b5e300c2 | 601 | send_status(id, status); |
602 | xfree(name); | |
603 | } | |
604 | ||
396c147e | 605 | static void |
b5e300c2 | 606 | process_fsetstat(void) |
607 | { | |
608 | Attrib *a; | |
609 | u_int32_t id; | |
610 | int handle, fd, ret; | |
f546c780 | 611 | int status = SSH2_FX_OK; |
bcbf86ec | 612 | char *name; |
16e538d4 | 613 | |
b5e300c2 | 614 | id = get_int(); |
615 | handle = get_handle(); | |
616 | a = get_attrib(); | |
9906a836 | 617 | TRACE("fsetstat id %u handle %d", id, handle); |
b5e300c2 | 618 | fd = handle_to_fd(handle); |
619 | name = handle_to_name(handle); | |
16e538d4 | 620 | if (fd < 0 || name == NULL) { |
f546c780 | 621 | status = SSH2_FX_FAILURE; |
b5e300c2 | 622 | } else { |
cb476289 | 623 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) { |
624 | ret = ftruncate(fd, a->size); | |
625 | if (ret == -1) | |
626 | status = errno_to_portable(errno); | |
627 | } | |
f546c780 | 628 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) { |
2fd3c144 | 629 | #ifdef HAVE_FCHMOD |
b5e300c2 | 630 | ret = fchmod(fd, a->perm & 0777); |
2fd3c144 | 631 | #else |
c33f0b36 | 632 | ret = chmod(name, a->perm & 0777); |
2fd3c144 | 633 | #endif |
b5e300c2 | 634 | if (ret == -1) |
635 | status = errno_to_portable(errno); | |
636 | } | |
f546c780 | 637 | if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { |
b5e300c2 | 638 | #ifdef HAVE_FUTIMES |
639 | ret = futimes(fd, attrib_to_tv(a)); | |
640 | #else | |
641 | ret = utimes(name, attrib_to_tv(a)); | |
642 | #endif | |
643 | if (ret == -1) | |
644 | status = errno_to_portable(errno); | |
645 | } | |
408ba72f | 646 | if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) { |
01f13020 | 647 | #ifdef HAVE_FCHOWN |
408ba72f | 648 | ret = fchown(fd, a->uid, a->gid); |
01f13020 | 649 | #else |
650 | ret = chown(name, a->uid, a->gid); | |
651 | #endif | |
408ba72f | 652 | if (ret == -1) |
653 | status = errno_to_portable(errno); | |
654 | } | |
b5e300c2 | 655 | } |
656 | send_status(id, status); | |
657 | } | |
658 | ||
396c147e | 659 | static void |
b5e300c2 | 660 | process_opendir(void) |
661 | { | |
662 | DIR *dirp = NULL; | |
663 | char *path; | |
f546c780 | 664 | int handle, status = SSH2_FX_FAILURE; |
b5e300c2 | 665 | u_int32_t id; |
666 | ||
667 | id = get_int(); | |
668 | path = get_string(NULL); | |
9906a836 | 669 | TRACE("opendir id %u path %s", id, path); |
2b87da3b | 670 | dirp = opendir(path); |
b5e300c2 | 671 | if (dirp == NULL) { |
672 | status = errno_to_portable(errno); | |
673 | } else { | |
3e2f2431 | 674 | handle = handle_new(HANDLE_DIR, path, 0, dirp); |
b5e300c2 | 675 | if (handle < 0) { |
676 | closedir(dirp); | |
677 | } else { | |
678 | send_handle(id, handle); | |
f546c780 | 679 | status = SSH2_FX_OK; |
b5e300c2 | 680 | } |
2b87da3b | 681 | |
b5e300c2 | 682 | } |
f546c780 | 683 | if (status != SSH2_FX_OK) |
b5e300c2 | 684 | send_status(id, status); |
685 | xfree(path); | |
686 | } | |
687 | ||
396c147e | 688 | static void |
b5e300c2 | 689 | process_readdir(void) |
690 | { | |
691 | DIR *dirp; | |
692 | struct dirent *dp; | |
693 | char *path; | |
694 | int handle; | |
695 | u_int32_t id; | |
696 | ||
697 | id = get_int(); | |
698 | handle = get_handle(); | |
9906a836 | 699 | TRACE("readdir id %u handle %d", id, handle); |
b5e300c2 | 700 | dirp = handle_to_dir(handle); |
701 | path = handle_to_name(handle); | |
702 | if (dirp == NULL || path == NULL) { | |
f546c780 | 703 | send_status(id, SSH2_FX_FAILURE); |
b5e300c2 | 704 | } else { |
b5e300c2 | 705 | struct stat st; |
706 | char pathname[1024]; | |
707 | Stat *stats; | |
708 | int nstats = 10, count = 0, i; | |
9906a836 | 709 | |
b5e300c2 | 710 | stats = xmalloc(nstats * sizeof(Stat)); |
711 | while ((dp = readdir(dirp)) != NULL) { | |
712 | if (count >= nstats) { | |
713 | nstats *= 2; | |
714 | stats = xrealloc(stats, nstats * sizeof(Stat)); | |
715 | } | |
716 | /* XXX OVERFLOW ? */ | |
88690211 | 717 | snprintf(pathname, sizeof pathname, "%s%s%s", path, |
718 | strcmp(path, "/") ? "/" : "", dp->d_name); | |
b5e300c2 | 719 | if (lstat(pathname, &st) < 0) |
720 | continue; | |
b5c334cc | 721 | stat_to_attrib(&st, &(stats[count].attrib)); |
b5e300c2 | 722 | stats[count].name = xstrdup(dp->d_name); |
00b3ad3e | 723 | stats[count].long_name = ls_file(dp->d_name, &st, 0); |
b5e300c2 | 724 | count++; |
725 | /* send up to 100 entries in one message */ | |
b5c334cc | 726 | /* XXX check packet size instead */ |
b5e300c2 | 727 | if (count == 100) |
728 | break; | |
729 | } | |
f546c780 | 730 | if (count > 0) { |
731 | send_names(id, count, stats); | |
184eed6a | 732 | for (i = 0; i < count; i++) { |
f546c780 | 733 | xfree(stats[i].name); |
734 | xfree(stats[i].long_name); | |
735 | } | |
736 | } else { | |
737 | send_status(id, SSH2_FX_EOF); | |
b5e300c2 | 738 | } |
739 | xfree(stats); | |
740 | } | |
741 | } | |
742 | ||
396c147e | 743 | static void |
b5e300c2 | 744 | process_remove(void) |
745 | { | |
746 | char *name; | |
747 | u_int32_t id; | |
f546c780 | 748 | int status = SSH2_FX_FAILURE; |
b5e300c2 | 749 | int ret; |
750 | ||
751 | id = get_int(); | |
752 | name = get_string(NULL); | |
9906a836 | 753 | TRACE("remove id %u name %s", id, name); |
67b0facb | 754 | ret = unlink(name); |
f546c780 | 755 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 756 | send_status(id, status); |
757 | xfree(name); | |
758 | } | |
759 | ||
396c147e | 760 | static void |
b5e300c2 | 761 | process_mkdir(void) |
762 | { | |
763 | Attrib *a; | |
764 | u_int32_t id; | |
765 | char *name; | |
f546c780 | 766 | int ret, mode, status = SSH2_FX_FAILURE; |
b5e300c2 | 767 | |
768 | id = get_int(); | |
769 | name = get_string(NULL); | |
770 | a = get_attrib(); | |
f546c780 | 771 | mode = (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? |
772 | a->perm & 0777 : 0777; | |
9906a836 | 773 | TRACE("mkdir id %u name %s mode 0%o", id, name, mode); |
b5e300c2 | 774 | ret = mkdir(name, mode); |
f546c780 | 775 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 776 | send_status(id, status); |
777 | xfree(name); | |
778 | } | |
779 | ||
396c147e | 780 | static void |
b5e300c2 | 781 | process_rmdir(void) |
782 | { | |
783 | u_int32_t id; | |
784 | char *name; | |
785 | int ret, status; | |
786 | ||
787 | id = get_int(); | |
788 | name = get_string(NULL); | |
9906a836 | 789 | TRACE("rmdir id %u name %s", id, name); |
b5e300c2 | 790 | ret = rmdir(name); |
f546c780 | 791 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; |
b5e300c2 | 792 | send_status(id, status); |
793 | xfree(name); | |
794 | } | |
795 | ||
396c147e | 796 | static void |
b5e300c2 | 797 | process_realpath(void) |
798 | { | |
799 | char resolvedname[MAXPATHLEN]; | |
800 | u_int32_t id; | |
801 | char *path; | |
802 | ||
803 | id = get_int(); | |
804 | path = get_string(NULL); | |
6b523bae | 805 | if (path[0] == '\0') { |
806 | xfree(path); | |
807 | path = xstrdup("."); | |
808 | } | |
9906a836 | 809 | TRACE("realpath id %u path %s", id, path); |
b5e300c2 | 810 | if (realpath(path, resolvedname) == NULL) { |
811 | send_status(id, errno_to_portable(errno)); | |
812 | } else { | |
813 | Stat s; | |
814 | attrib_clear(&s.attrib); | |
815 | s.name = s.long_name = resolvedname; | |
816 | send_names(id, 1, &s); | |
817 | } | |
818 | xfree(path); | |
819 | } | |
820 | ||
396c147e | 821 | static void |
b5e300c2 | 822 | process_rename(void) |
823 | { | |
824 | u_int32_t id; | |
825 | char *oldpath, *newpath; | |
f2f28f1f | 826 | int status; |
fd77a40f | 827 | struct stat sb; |
b5e300c2 | 828 | |
829 | id = get_int(); | |
830 | oldpath = get_string(NULL); | |
831 | newpath = get_string(NULL); | |
9906a836 | 832 | TRACE("rename id %u old %s new %s", id, oldpath, newpath); |
fd77a40f | 833 | status = SSH2_FX_FAILURE; |
834 | if (lstat(oldpath, &sb) == -1) | |
f2f28f1f | 835 | status = errno_to_portable(errno); |
fd77a40f | 836 | else if (S_ISREG(sb.st_mode)) { |
837 | /* Race-free rename of regular files */ | |
dc5888bf | 838 | if (link(oldpath, newpath) == -1) { |
cd698186 | 839 | if (errno == EOPNOTSUPP |
840 | #ifdef LINK_OPNOTSUPP_ERRNO | |
841 | || errno == LINK_OPNOTSUPP_ERRNO | |
842 | #endif | |
843 | ) { | |
dc5888bf | 844 | struct stat st; |
845 | ||
846 | /* | |
847 | * fs doesn't support links, so fall back to | |
848 | * stat+rename. This is racy. | |
849 | */ | |
850 | if (stat(newpath, &st) == -1) { | |
851 | if (rename(oldpath, newpath) == -1) | |
852 | status = | |
853 | errno_to_portable(errno); | |
854 | else | |
855 | status = SSH2_FX_OK; | |
856 | } | |
857 | } else { | |
858 | status = errno_to_portable(errno); | |
859 | } | |
860 | } else if (unlink(oldpath) == -1) { | |
fd77a40f | 861 | status = errno_to_portable(errno); |
862 | /* clean spare link */ | |
863 | unlink(newpath); | |
864 | } else | |
865 | status = SSH2_FX_OK; | |
866 | } else if (stat(newpath, &sb) == -1) { | |
867 | if (rename(oldpath, newpath) == -1) | |
868 | status = errno_to_portable(errno); | |
869 | else | |
870 | status = SSH2_FX_OK; | |
871 | } | |
b5e300c2 | 872 | send_status(id, status); |
873 | xfree(oldpath); | |
874 | xfree(newpath); | |
875 | } | |
876 | ||
396c147e | 877 | static void |
3a7fe5ba | 878 | process_readlink(void) |
879 | { | |
880 | u_int32_t id; | |
362df52e | 881 | int len; |
ca75d7de | 882 | char buf[MAXPATHLEN]; |
3a7fe5ba | 883 | char *path; |
884 | ||
885 | id = get_int(); | |
886 | path = get_string(NULL); | |
9906a836 | 887 | TRACE("readlink id %u path %s", id, path); |
ca75d7de | 888 | if ((len = readlink(path, buf, sizeof(buf) - 1)) == -1) |
3a7fe5ba | 889 | send_status(id, errno_to_portable(errno)); |
890 | else { | |
891 | Stat s; | |
184eed6a | 892 | |
ca75d7de | 893 | buf[len] = '\0'; |
3a7fe5ba | 894 | attrib_clear(&s.attrib); |
ca75d7de | 895 | s.name = s.long_name = buf; |
3a7fe5ba | 896 | send_names(id, 1, &s); |
897 | } | |
898 | xfree(path); | |
899 | } | |
900 | ||
396c147e | 901 | static void |
3a7fe5ba | 902 | process_symlink(void) |
903 | { | |
904 | u_int32_t id; | |
3a7fe5ba | 905 | char *oldpath, *newpath; |
f2f28f1f | 906 | int ret, status; |
3a7fe5ba | 907 | |
908 | id = get_int(); | |
909 | oldpath = get_string(NULL); | |
910 | newpath = get_string(NULL); | |
9906a836 | 911 | TRACE("symlink id %u old %s new %s", id, oldpath, newpath); |
f2f28f1f | 912 | /* this will fail if 'newpath' exists */ |
913 | ret = symlink(oldpath, newpath); | |
914 | status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; | |
3a7fe5ba | 915 | send_status(id, status); |
916 | xfree(oldpath); | |
917 | xfree(newpath); | |
918 | } | |
919 | ||
396c147e | 920 | static void |
f546c780 | 921 | process_extended(void) |
922 | { | |
923 | u_int32_t id; | |
924 | char *request; | |
925 | ||
926 | id = get_int(); | |
927 | request = get_string(NULL); | |
928 | send_status(id, SSH2_FX_OP_UNSUPPORTED); /* MUST */ | |
929 | xfree(request); | |
930 | } | |
b5e300c2 | 931 | |
932 | /* stolen from ssh-agent */ | |
933 | ||
396c147e | 934 | static void |
b5e300c2 | 935 | process(void) |
936 | { | |
1e3b8b07 | 937 | u_int msg_len; |
9b4ac641 | 938 | u_int buf_len; |
939 | u_int consumed; | |
1e3b8b07 | 940 | u_int type; |
941 | u_char *cp; | |
b5e300c2 | 942 | |
9b4ac641 | 943 | buf_len = buffer_len(&iqueue); |
944 | if (buf_len < 5) | |
b5e300c2 | 945 | return; /* Incomplete message. */ |
20905a8e | 946 | cp = buffer_ptr(&iqueue); |
b5e300c2 | 947 | msg_len = GET_32BIT(cp); |
948 | if (msg_len > 256 * 1024) { | |
949 | error("bad message "); | |
950 | exit(11); | |
951 | } | |
9b4ac641 | 952 | if (buf_len < msg_len + 4) |
b5e300c2 | 953 | return; |
954 | buffer_consume(&iqueue, 4); | |
9b4ac641 | 955 | buf_len -= 4; |
b5e300c2 | 956 | type = buffer_get_char(&iqueue); |
957 | switch (type) { | |
f546c780 | 958 | case SSH2_FXP_INIT: |
b5e300c2 | 959 | process_init(); |
960 | break; | |
f546c780 | 961 | case SSH2_FXP_OPEN: |
b5e300c2 | 962 | process_open(); |
963 | break; | |
f546c780 | 964 | case SSH2_FXP_CLOSE: |
b5e300c2 | 965 | process_close(); |
966 | break; | |
f546c780 | 967 | case SSH2_FXP_READ: |
b5e300c2 | 968 | process_read(); |
969 | break; | |
f546c780 | 970 | case SSH2_FXP_WRITE: |
b5e300c2 | 971 | process_write(); |
972 | break; | |
f546c780 | 973 | case SSH2_FXP_LSTAT: |
b5e300c2 | 974 | process_lstat(); |
975 | break; | |
f546c780 | 976 | case SSH2_FXP_FSTAT: |
b5e300c2 | 977 | process_fstat(); |
978 | break; | |
f546c780 | 979 | case SSH2_FXP_SETSTAT: |
b5e300c2 | 980 | process_setstat(); |
981 | break; | |
f546c780 | 982 | case SSH2_FXP_FSETSTAT: |
b5e300c2 | 983 | process_fsetstat(); |
984 | break; | |
f546c780 | 985 | case SSH2_FXP_OPENDIR: |
b5e300c2 | 986 | process_opendir(); |
987 | break; | |
f546c780 | 988 | case SSH2_FXP_READDIR: |
b5e300c2 | 989 | process_readdir(); |
990 | break; | |
f546c780 | 991 | case SSH2_FXP_REMOVE: |
b5e300c2 | 992 | process_remove(); |
993 | break; | |
f546c780 | 994 | case SSH2_FXP_MKDIR: |
b5e300c2 | 995 | process_mkdir(); |
996 | break; | |
f546c780 | 997 | case SSH2_FXP_RMDIR: |
b5e300c2 | 998 | process_rmdir(); |
999 | break; | |
f546c780 | 1000 | case SSH2_FXP_REALPATH: |
b5e300c2 | 1001 | process_realpath(); |
1002 | break; | |
f546c780 | 1003 | case SSH2_FXP_STAT: |
b5e300c2 | 1004 | process_stat(); |
1005 | break; | |
f546c780 | 1006 | case SSH2_FXP_RENAME: |
b5e300c2 | 1007 | process_rename(); |
1008 | break; | |
3a7fe5ba | 1009 | case SSH2_FXP_READLINK: |
1010 | process_readlink(); | |
1011 | break; | |
1012 | case SSH2_FXP_SYMLINK: | |
1013 | process_symlink(); | |
1014 | break; | |
f546c780 | 1015 | case SSH2_FXP_EXTENDED: |
1016 | process_extended(); | |
1017 | break; | |
b5e300c2 | 1018 | default: |
1019 | error("Unknown message %d", type); | |
1020 | break; | |
1021 | } | |
9b4ac641 | 1022 | /* discard the remaining bytes from the current packet */ |
1023 | if (buf_len < buffer_len(&iqueue)) | |
1024 | fatal("iqueue grows"); | |
1025 | consumed = buf_len - buffer_len(&iqueue); | |
1026 | if (msg_len < consumed) | |
1027 | fatal("msg_len %d < consumed %d", msg_len, consumed); | |
1028 | if (msg_len > consumed) | |
1029 | buffer_consume(&iqueue, msg_len - consumed); | |
b5e300c2 | 1030 | } |
1031 | ||
1032 | int | |
1033 | main(int ac, char **av) | |
1034 | { | |
c8d75031 | 1035 | fd_set *rset, *wset; |
b5e300c2 | 1036 | int in, out, max; |
c8d75031 | 1037 | ssize_t len, olen, set_size; |
b5e300c2 | 1038 | |
61b3a2bc | 1039 | /* XXX should use getopt */ |
1040 | ||
fda04d7d | 1041 | __progname = ssh_get_progname(av[0]); |
b5e300c2 | 1042 | handle_init(); |
1043 | ||
b5c334cc | 1044 | #ifdef DEBUG_SFTP_SERVER |
2b87da3b | 1045 | log_init("sftp-server", SYSLOG_LEVEL_DEBUG1, SYSLOG_FACILITY_AUTH, 0); |
b5c334cc | 1046 | #endif |
f546c780 | 1047 | |
b5e300c2 | 1048 | in = dup(STDIN_FILENO); |
1049 | out = dup(STDOUT_FILENO); | |
1050 | ||
fe56c12b | 1051 | #ifdef HAVE_CYGWIN |
1052 | setmode(in, O_BINARY); | |
1053 | setmode(out, O_BINARY); | |
1054 | #endif | |
1055 | ||
b5e300c2 | 1056 | max = 0; |
1057 | if (in > max) | |
1058 | max = in; | |
1059 | if (out > max) | |
1060 | max = out; | |
1061 | ||
1062 | buffer_init(&iqueue); | |
1063 | buffer_init(&oqueue); | |
1064 | ||
c8d75031 | 1065 | set_size = howmany(max + 1, NFDBITS) * sizeof(fd_mask); |
1066 | rset = (fd_set *)xmalloc(set_size); | |
1067 | wset = (fd_set *)xmalloc(set_size); | |
1068 | ||
b5e300c2 | 1069 | for (;;) { |
c8d75031 | 1070 | memset(rset, 0, set_size); |
1071 | memset(wset, 0, set_size); | |
b5e300c2 | 1072 | |
c8d75031 | 1073 | FD_SET(in, rset); |
b5e300c2 | 1074 | olen = buffer_len(&oqueue); |
1075 | if (olen > 0) | |
c8d75031 | 1076 | FD_SET(out, wset); |
b5e300c2 | 1077 | |
c8d75031 | 1078 | if (select(max+1, rset, wset, NULL, NULL) < 0) { |
b5e300c2 | 1079 | if (errno == EINTR) |
1080 | continue; | |
1081 | exit(2); | |
1082 | } | |
1083 | ||
1084 | /* copy stdin to iqueue */ | |
c8d75031 | 1085 | if (FD_ISSET(in, rset)) { |
b5e300c2 | 1086 | char buf[4*4096]; |
1087 | len = read(in, buf, sizeof buf); | |
1088 | if (len == 0) { | |
1089 | debug("read eof"); | |
1090 | exit(0); | |
1091 | } else if (len < 0) { | |
1092 | error("read error"); | |
1093 | exit(1); | |
1094 | } else { | |
1095 | buffer_append(&iqueue, buf, len); | |
1096 | } | |
1097 | } | |
1098 | /* send oqueue to stdout */ | |
c8d75031 | 1099 | if (FD_ISSET(out, wset)) { |
b5e300c2 | 1100 | len = write(out, buffer_ptr(&oqueue), olen); |
1101 | if (len < 0) { | |
1102 | error("write error"); | |
1103 | exit(1); | |
1104 | } else { | |
1105 | buffer_consume(&oqueue, len); | |
1106 | } | |
1107 | } | |
1108 | /* process requests from client */ | |
1109 | process(); | |
1110 | } | |
1111 | } |