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aa3378df | 1 | /* |
8ab5f6b2 | 2 | * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl. All rights reserved. |
aa3378df | 3 | * |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
aa3378df | 12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | ||
8efc0c15 | 25 | #include "includes.h" |
8efc0c15 | 26 | |
42f11eb2 | 27 | #include "ssh1.h" |
28 | #include "ssh2.h" | |
8efc0c15 | 29 | #include "buffer.h" |
30 | #include "packet.h" | |
31 | #include "channels.h" | |
7e7327a1 | 32 | #include "compat.h" |
42f11eb2 | 33 | #include "log.h" |
8efc0c15 | 34 | |
f048f3e2 | 35 | /* |
36 | * SSH Protocol 1.5 aka New Channel Protocol | |
37 | * Thanks to Martina, Axel and everyone who left Erlangen, leaving me bored. | |
38 | * Written by Markus Friedl in October 1999 | |
39 | * | |
40 | * Protocol versions 1.3 and 1.5 differ in the handshake protocol used for the | |
41 | * tear down of channels: | |
42 | * | |
43 | * 1.3: strict request-ack-protocol: | |
f2107e97 | 44 | * CLOSE -> |
45 | * <- CLOSE_CONFIRM | |
f048f3e2 | 46 | * |
47 | * 1.5: uses variations of: | |
f2107e97 | 48 | * IEOF -> |
49 | * <- OCLOSE | |
50 | * <- IEOF | |
51 | * OCLOSE -> | |
52 | * i.e. both sides have to close the channel | |
f048f3e2 | 53 | * |
54 | * 2.0: the EOF messages are optional | |
55 | * | |
56 | * See the debugging output from 'ssh -v' and 'sshd -d' of | |
57 | * ssh-1.2.27 as an example. | |
58 | * | |
59 | */ | |
1b73841d | 60 | |
7e7327a1 | 61 | /* functions manipulating channel states */ |
8efc0c15 | 62 | /* |
5260325f | 63 | * EVENTS update channel input/output states execute ACTIONS |
8efc0c15 | 64 | */ |
7e7327a1 | 65 | /* |
66 | * ACTIONS: should never update the channel states | |
67 | */ | |
396c147e | 68 | static void chan_send_ieof1(Channel *); |
69 | static void chan_send_oclose1(Channel *); | |
70 | static void chan_send_close2(Channel *); | |
71 | static void chan_send_eof2(Channel *); | |
7e7327a1 | 72 | |
7e7327a1 | 73 | /* helper */ |
396c147e | 74 | static void chan_shutdown_write(Channel *); |
75 | static void chan_shutdown_read(Channel *); | |
7e7327a1 | 76 | |
368e9dfc | 77 | static char *ostates[] = { "open", "drain", "wait_ieof", "closed" }; |
78 | static char *istates[] = { "open", "drain", "wait_oclose", "closed" }; | |
79 | ||
80 | static void | |
81 | chan_set_istate(Channel *c, u_int next) | |
82 | { | |
83 | if (c->istate > CHAN_INPUT_CLOSED || next > CHAN_INPUT_CLOSED) | |
84 | fatal("chan_set_istate: bad state %d -> %d", c->istate, next); | |
d7ac5f18 | 85 | debug2("channel %d: input %s -> %s", c->self, istates[c->istate], |
368e9dfc | 86 | istates[next]); |
87 | c->istate = next; | |
88 | } | |
89 | static void | |
90 | chan_set_ostate(Channel *c, u_int next) | |
91 | { | |
92 | if (c->ostate > CHAN_OUTPUT_CLOSED || next > CHAN_OUTPUT_CLOSED) | |
93 | fatal("chan_set_ostate: bad state %d -> %d", c->ostate, next); | |
d7ac5f18 | 94 | debug2("channel %d: output %s -> %s", c->self, ostates[c->ostate], |
368e9dfc | 95 | ostates[next]); |
96 | c->ostate = next; | |
97 | } | |
98 | ||
7e7327a1 | 99 | /* |
100 | * SSH1 specific implementation of event functions | |
101 | */ | |
102 | ||
103 | static void | |
104 | chan_rcvd_oclose1(Channel *c) | |
5260325f | 105 | { |
d7ac5f18 | 106 | debug2("channel %d: rcvd oclose", c->self); |
5260325f | 107 | switch (c->istate) { |
8efc0c15 | 108 | case CHAN_INPUT_WAIT_OCLOSE: |
368e9dfc | 109 | chan_set_istate(c, CHAN_INPUT_CLOSED); |
8efc0c15 | 110 | break; |
111 | case CHAN_INPUT_OPEN: | |
8efc0c15 | 112 | chan_shutdown_read(c); |
7e7327a1 | 113 | chan_send_ieof1(c); |
368e9dfc | 114 | chan_set_istate(c, CHAN_INPUT_CLOSED); |
48e671d5 | 115 | break; |
116 | case CHAN_INPUT_WAIT_DRAIN: | |
117 | /* both local read_failed and remote write_failed */ | |
7e7327a1 | 118 | chan_send_ieof1(c); |
368e9dfc | 119 | chan_set_istate(c, CHAN_INPUT_CLOSED); |
8efc0c15 | 120 | break; |
121 | default: | |
f048f3e2 | 122 | error("channel %d: protocol error: rcvd_oclose for istate %d", |
7e7327a1 | 123 | c->self, c->istate); |
48e671d5 | 124 | return; |
8efc0c15 | 125 | } |
126 | } | |
70bef40e | 127 | void |
128 | chan_read_failed(Channel *c) | |
5260325f | 129 | { |
d7ac5f18 | 130 | debug2("channel %d: read failed", c->self); |
5260325f | 131 | switch (c->istate) { |
8efc0c15 | 132 | case CHAN_INPUT_OPEN: |
8efc0c15 | 133 | chan_shutdown_read(c); |
368e9dfc | 134 | chan_set_istate(c, CHAN_INPUT_WAIT_DRAIN); |
8efc0c15 | 135 | break; |
136 | default: | |
f048f3e2 | 137 | error("channel %d: chan_read_failed for istate %d", |
7e7327a1 | 138 | c->self, c->istate); |
8efc0c15 | 139 | break; |
140 | } | |
141 | } | |
70bef40e | 142 | void |
143 | chan_ibuf_empty(Channel *c) | |
5260325f | 144 | { |
d7ac5f18 | 145 | debug2("channel %d: ibuf empty", c->self); |
5260325f | 146 | if (buffer_len(&c->input)) { |
f048f3e2 | 147 | error("channel %d: chan_ibuf_empty for non empty buffer", |
7e7327a1 | 148 | c->self); |
8efc0c15 | 149 | return; |
150 | } | |
5260325f | 151 | switch (c->istate) { |
8efc0c15 | 152 | case CHAN_INPUT_WAIT_DRAIN: |
3057c23b | 153 | if (compat20) { |
154 | if (!(c->flags & CHAN_CLOSE_SENT)) | |
155 | chan_send_eof2(c); | |
156 | chan_set_istate(c, CHAN_INPUT_CLOSED); | |
157 | } else { | |
158 | chan_send_ieof1(c); | |
159 | chan_set_istate(c, CHAN_INPUT_WAIT_OCLOSE); | |
160 | } | |
8efc0c15 | 161 | break; |
162 | default: | |
f048f3e2 | 163 | error("channel %d: chan_ibuf_empty for istate %d", |
7e7327a1 | 164 | c->self, c->istate); |
8efc0c15 | 165 | break; |
166 | } | |
167 | } | |
7e7327a1 | 168 | static void |
169 | chan_rcvd_ieof1(Channel *c) | |
5260325f | 170 | { |
d7ac5f18 | 171 | debug2("channel %d: rcvd ieof", c->self); |
5260325f | 172 | switch (c->ostate) { |
8efc0c15 | 173 | case CHAN_OUTPUT_OPEN: |
368e9dfc | 174 | chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); |
8efc0c15 | 175 | break; |
176 | case CHAN_OUTPUT_WAIT_IEOF: | |
368e9dfc | 177 | chan_set_ostate(c, CHAN_OUTPUT_CLOSED); |
8efc0c15 | 178 | break; |
179 | default: | |
f048f3e2 | 180 | error("channel %d: protocol error: rcvd_ieof for ostate %d", |
7e7327a1 | 181 | c->self, c->ostate); |
8efc0c15 | 182 | break; |
183 | } | |
184 | } | |
7e7327a1 | 185 | static void |
186 | chan_write_failed1(Channel *c) | |
5260325f | 187 | { |
d7ac5f18 | 188 | debug2("channel %d: write failed", c->self); |
5260325f | 189 | switch (c->ostate) { |
8efc0c15 | 190 | case CHAN_OUTPUT_OPEN: |
1e5e896c | 191 | chan_shutdown_write(c); |
7e7327a1 | 192 | chan_send_oclose1(c); |
368e9dfc | 193 | chan_set_ostate(c, CHAN_OUTPUT_WAIT_IEOF); |
8efc0c15 | 194 | break; |
195 | case CHAN_OUTPUT_WAIT_DRAIN: | |
1e5e896c | 196 | chan_shutdown_write(c); |
7e7327a1 | 197 | chan_send_oclose1(c); |
368e9dfc | 198 | chan_set_ostate(c, CHAN_OUTPUT_CLOSED); |
8efc0c15 | 199 | break; |
200 | default: | |
f048f3e2 | 201 | error("channel %d: chan_write_failed for ostate %d", |
7e7327a1 | 202 | c->self, c->ostate); |
8efc0c15 | 203 | break; |
204 | } | |
205 | } | |
70bef40e | 206 | void |
207 | chan_obuf_empty(Channel *c) | |
5260325f | 208 | { |
d7ac5f18 | 209 | debug2("channel %d: obuf empty", c->self); |
5260325f | 210 | if (buffer_len(&c->output)) { |
f048f3e2 | 211 | error("channel %d: chan_obuf_empty for non empty buffer", |
7e7327a1 | 212 | c->self); |
8efc0c15 | 213 | return; |
214 | } | |
5260325f | 215 | switch (c->ostate) { |
8efc0c15 | 216 | case CHAN_OUTPUT_WAIT_DRAIN: |
1e5e896c | 217 | chan_shutdown_write(c); |
3057c23b | 218 | if (!compat20) |
219 | chan_send_oclose1(c); | |
368e9dfc | 220 | chan_set_ostate(c, CHAN_OUTPUT_CLOSED); |
8efc0c15 | 221 | break; |
222 | default: | |
f048f3e2 | 223 | error("channel %d: internal error: obuf_empty for ostate %d", |
7e7327a1 | 224 | c->self, c->ostate); |
8efc0c15 | 225 | break; |
226 | } | |
227 | } | |
8efc0c15 | 228 | static void |
7e7327a1 | 229 | chan_send_ieof1(Channel *c) |
5260325f | 230 | { |
d7ac5f18 | 231 | debug2("channel %d: send ieof", c->self); |
5260325f | 232 | switch (c->istate) { |
8efc0c15 | 233 | case CHAN_INPUT_OPEN: |
234 | case CHAN_INPUT_WAIT_DRAIN: | |
235 | packet_start(SSH_MSG_CHANNEL_INPUT_EOF); | |
236 | packet_put_int(c->remote_id); | |
237 | packet_send(); | |
238 | break; | |
239 | default: | |
f048f3e2 | 240 | error("channel %d: cannot send ieof for istate %d", |
7e7327a1 | 241 | c->self, c->istate); |
8efc0c15 | 242 | break; |
243 | } | |
244 | } | |
245 | static void | |
7e7327a1 | 246 | chan_send_oclose1(Channel *c) |
5260325f | 247 | { |
d7ac5f18 | 248 | debug2("channel %d: send oclose", c->self); |
5260325f | 249 | switch (c->ostate) { |
8efc0c15 | 250 | case CHAN_OUTPUT_OPEN: |
251 | case CHAN_OUTPUT_WAIT_DRAIN: | |
9c50edcf | 252 | buffer_clear(&c->output); |
8efc0c15 | 253 | packet_start(SSH_MSG_CHANNEL_OUTPUT_CLOSE); |
254 | packet_put_int(c->remote_id); | |
255 | packet_send(); | |
256 | break; | |
257 | default: | |
f048f3e2 | 258 | error("channel %d: cannot send oclose for ostate %d", |
184eed6a | 259 | c->self, c->ostate); |
8efc0c15 | 260 | break; |
261 | } | |
262 | } | |
5260325f | 263 | |
7e7327a1 | 264 | /* |
265 | * the same for SSH2 | |
266 | */ | |
8efc0c15 | 267 | static void |
668a91b7 | 268 | chan_rcvd_close2(Channel *c) |
5260325f | 269 | { |
d7ac5f18 | 270 | debug2("channel %d: rcvd close", c->self); |
7e7327a1 | 271 | if (c->flags & CHAN_CLOSE_RCVD) |
272 | error("channel %d: protocol error: close rcvd twice", c->self); | |
273 | c->flags |= CHAN_CLOSE_RCVD; | |
274 | if (c->type == SSH_CHANNEL_LARVAL) { | |
275 | /* tear down larval channels immediately */ | |
368e9dfc | 276 | chan_set_ostate(c, CHAN_OUTPUT_CLOSED); |
277 | chan_set_istate(c, CHAN_INPUT_CLOSED); | |
7e7327a1 | 278 | return; |
279 | } | |
280 | switch (c->ostate) { | |
281 | case CHAN_OUTPUT_OPEN: | |
f048f3e2 | 282 | /* |
283 | * wait until a data from the channel is consumed if a CLOSE | |
284 | * is received | |
285 | */ | |
368e9dfc | 286 | chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); |
7e7327a1 | 287 | break; |
288 | } | |
289 | switch (c->istate) { | |
290 | case CHAN_INPUT_OPEN: | |
7e7327a1 | 291 | chan_shutdown_read(c); |
668a91b7 | 292 | chan_set_istate(c, CHAN_INPUT_CLOSED); |
7e7327a1 | 293 | break; |
294 | case CHAN_INPUT_WAIT_DRAIN: | |
7e7327a1 | 295 | chan_send_eof2(c); |
668a91b7 | 296 | chan_set_istate(c, CHAN_INPUT_CLOSED); |
7e7327a1 | 297 | break; |
298 | } | |
8efc0c15 | 299 | } |
300 | static void | |
668a91b7 | 301 | chan_rcvd_eof2(Channel *c) |
5260325f | 302 | { |
d7ac5f18 | 303 | debug2("channel %d: rcvd eof", c->self); |
d2296ed7 | 304 | c->flags |= CHAN_EOF_RCVD; |
368e9dfc | 305 | if (c->ostate == CHAN_OUTPUT_OPEN) |
306 | chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN); | |
8efc0c15 | 307 | } |
7e7327a1 | 308 | static void |
309 | chan_write_failed2(Channel *c) | |
310 | { | |
d7ac5f18 | 311 | debug2("channel %d: write failed", c->self); |
7e7327a1 | 312 | switch (c->ostate) { |
313 | case CHAN_OUTPUT_OPEN: | |
7e7327a1 | 314 | case CHAN_OUTPUT_WAIT_DRAIN: |
7e7327a1 | 315 | chan_shutdown_write(c); |
368e9dfc | 316 | chan_set_ostate(c, CHAN_OUTPUT_CLOSED); |
7e7327a1 | 317 | break; |
318 | default: | |
f048f3e2 | 319 | error("channel %d: chan_write_failed for ostate %d", |
7e7327a1 | 320 | c->self, c->ostate); |
321 | break; | |
322 | } | |
323 | } | |
324 | static void | |
7e7327a1 | 325 | chan_send_eof2(Channel *c) |
326 | { | |
d7ac5f18 | 327 | debug2("channel %d: send eof", c->self); |
7e7327a1 | 328 | switch (c->istate) { |
329 | case CHAN_INPUT_WAIT_DRAIN: | |
330 | packet_start(SSH2_MSG_CHANNEL_EOF); | |
331 | packet_put_int(c->remote_id); | |
332 | packet_send(); | |
d2296ed7 | 333 | c->flags |= CHAN_EOF_SENT; |
7e7327a1 | 334 | break; |
335 | default: | |
f048f3e2 | 336 | error("channel %d: cannot send eof for istate %d", |
7e7327a1 | 337 | c->self, c->istate); |
338 | break; | |
339 | } | |
340 | } | |
341 | static void | |
342 | chan_send_close2(Channel *c) | |
343 | { | |
d7ac5f18 | 344 | debug2("channel %d: send close", c->self); |
7e7327a1 | 345 | if (c->ostate != CHAN_OUTPUT_CLOSED || |
346 | c->istate != CHAN_INPUT_CLOSED) { | |
f048f3e2 | 347 | error("channel %d: cannot send close for istate/ostate %d/%d", |
7e7327a1 | 348 | c->self, c->istate, c->ostate); |
349 | } else if (c->flags & CHAN_CLOSE_SENT) { | |
f048f3e2 | 350 | error("channel %d: already sent close", c->self); |
7e7327a1 | 351 | } else { |
352 | packet_start(SSH2_MSG_CHANNEL_CLOSE); | |
353 | packet_put_int(c->remote_id); | |
354 | packet_send(); | |
355 | c->flags |= CHAN_CLOSE_SENT; | |
356 | } | |
357 | } | |
ee55dacf | 358 | |
359 | /* shared */ | |
360 | ||
70bef40e | 361 | void |
362 | chan_rcvd_ieof(Channel *c) | |
363 | { | |
364 | if (compat20) | |
365 | chan_rcvd_eof2(c); | |
366 | else | |
367 | chan_rcvd_ieof1(c); | |
32e7d71f | 368 | if (c->ostate == CHAN_OUTPUT_WAIT_DRAIN && |
7203d6bb | 369 | buffer_len(&c->output) == 0 && |
d2296ed7 | 370 | !CHANNEL_EFD_OUTPUT_ACTIVE(c)) |
32e7d71f | 371 | chan_obuf_empty(c); |
70bef40e | 372 | } |
373 | void | |
374 | chan_rcvd_oclose(Channel *c) | |
375 | { | |
376 | if (compat20) | |
377 | chan_rcvd_close2(c); | |
378 | else | |
379 | chan_rcvd_oclose1(c); | |
380 | } | |
381 | void | |
382 | chan_write_failed(Channel *c) | |
383 | { | |
384 | if (compat20) | |
385 | chan_write_failed2(c); | |
386 | else | |
387 | chan_write_failed1(c); | |
388 | } | |
389 | ||
719fc62f | 390 | void |
391 | chan_mark_dead(Channel *c) | |
392 | { | |
6fd8622b | 393 | c->type = SSH_CHANNEL_ZOMBIE; |
719fc62f | 394 | } |
395 | ||
ee55dacf | 396 | int |
ca75d7de | 397 | chan_is_dead(Channel *c, int do_send) |
5260325f | 398 | { |
6fd8622b | 399 | if (c->type == SSH_CHANNEL_ZOMBIE) { |
d7ac5f18 | 400 | debug2("channel %d: zombie", c->self); |
719fc62f | 401 | return 1; |
6fd8622b | 402 | } |
ee55dacf | 403 | if (c->istate != CHAN_INPUT_CLOSED || c->ostate != CHAN_OUTPUT_CLOSED) |
404 | return 0; | |
405 | if (!compat20) { | |
d7ac5f18 | 406 | debug2("channel %d: is dead", c->self); |
ee55dacf | 407 | return 1; |
408 | } | |
d2296ed7 | 409 | if ((datafellows & SSH_BUG_EXTEOF) && |
410 | c->extended_usage == CHAN_EXTENDED_WRITE && | |
411 | c->efd != -1 && | |
412 | buffer_len(&c->extended) > 0) { | |
875ec275 | 413 | debug2("channel %d: active efd: %d len %d", |
414 | c->self, c->efd, buffer_len(&c->extended)); | |
d2296ed7 | 415 | return 0; |
416 | } | |
417 | if (!(c->flags & CHAN_CLOSE_SENT)) { | |
ca75d7de | 418 | if (do_send) { |
d2296ed7 | 419 | chan_send_close2(c); |
420 | } else { | |
421 | /* channel would be dead if we sent a close */ | |
422 | if (c->flags & CHAN_CLOSE_RCVD) { | |
d7ac5f18 | 423 | debug2("channel %d: almost dead", |
d2296ed7 | 424 | c->self); |
425 | return 1; | |
418e724c | 426 | } |
7e7327a1 | 427 | } |
d2296ed7 | 428 | } |
429 | if ((c->flags & CHAN_CLOSE_SENT) && | |
430 | (c->flags & CHAN_CLOSE_RCVD)) { | |
d7ac5f18 | 431 | debug2("channel %d: is dead", c->self); |
d2296ed7 | 432 | return 1; |
8efc0c15 | 433 | } |
ee55dacf | 434 | return 0; |
8efc0c15 | 435 | } |
7e7327a1 | 436 | |
7e7327a1 | 437 | /* helper */ |
438 | static void | |
439 | chan_shutdown_write(Channel *c) | |
440 | { | |
9c50edcf | 441 | buffer_clear(&c->output); |
7e7327a1 | 442 | if (compat20 && c->type == SSH_CHANNEL_LARVAL) |
443 | return; | |
444 | /* shutdown failure is allowed if write failed already */ | |
d7ac5f18 | 445 | debug2("channel %d: close_write", c->self); |
7e7327a1 | 446 | if (c->sock != -1) { |
447 | if (shutdown(c->sock, SHUT_WR) < 0) | |
d7ac5f18 | 448 | debug2("channel %d: chan_shutdown_write: " |
f048f3e2 | 449 | "shutdown() failed for fd%d: %.100s", |
7e7327a1 | 450 | c->self, c->sock, strerror(errno)); |
451 | } else { | |
489aa2e9 | 452 | if (channel_close_fd(&c->wfd) < 0) |
bbe88b6d | 453 | logit("channel %d: chan_shutdown_write: " |
f048f3e2 | 454 | "close() failed for fd%d: %.100s", |
7e7327a1 | 455 | c->self, c->wfd, strerror(errno)); |
7e7327a1 | 456 | } |
457 | } | |
458 | static void | |
459 | chan_shutdown_read(Channel *c) | |
460 | { | |
461 | if (compat20 && c->type == SSH_CHANNEL_LARVAL) | |
462 | return; | |
d7ac5f18 | 463 | debug2("channel %d: close_read", c->self); |
7e7327a1 | 464 | if (c->sock != -1) { |
2b87da3b | 465 | /* |
47670e77 | 466 | * shutdown(sock, SHUT_READ) may return ENOTCONN if the |
467 | * write side has been closed already. (bug on Linux) | |
f49df8e9 | 468 | * HP-UX may return ENOTCONN also. |
47670e77 | 469 | */ |
470 | if (shutdown(c->sock, SHUT_RD) < 0 | |
f49df8e9 | 471 | && errno != ENOTCONN) |
f048f3e2 | 472 | error("channel %d: chan_shutdown_read: " |
473 | "shutdown() failed for fd%d [i%d o%d]: %.100s", | |
474 | c->self, c->sock, c->istate, c->ostate, | |
1b73841d | 475 | strerror(errno)); |
7e7327a1 | 476 | } else { |
489aa2e9 | 477 | if (channel_close_fd(&c->rfd) < 0) |
bbe88b6d | 478 | logit("channel %d: chan_shutdown_read: " |
f048f3e2 | 479 | "close() failed for fd%d: %.100s", |
7e7327a1 | 480 | c->self, c->rfd, strerror(errno)); |
7e7327a1 | 481 | } |
8efc0c15 | 482 | } |