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Commit | Line | Data |
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61b844bf TL |
1 | /* buffer.c |
2 | ||
3 | Buffer access functions for the object management protocol... */ | |
4 | ||
5 | /* | |
7512d88b | 6 | * Copyright (c) 2004-2017 by Internet Systems Consortium, Inc. ("ISC") |
98311e4b | 7 | * Copyright (c) 1999-2003 by Internet Software Consortium |
61b844bf | 8 | * |
7512d88b TM |
9 | * This Source Code Form is subject to the terms of the Mozilla Public |
10 | * License, v. 2.0. If a copy of the MPL was not distributed with this | |
11 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
61b844bf | 12 | * |
98311e4b DH |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR | |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
19 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
61b844bf | 20 | * |
98311e4b | 21 | * Internet Systems Consortium, Inc. |
429a56d7 TM |
22 | * PO Box 360 |
23 | * Newmarket, NH 03857 USA | |
98311e4b | 24 | * <info@isc.org> |
2c85ac9b | 25 | * https://www.isc.org/ |
49733f31 | 26 | * |
61b844bf TL |
27 | */ |
28 | ||
fe5b0fdd DH |
29 | #include "dhcpd.h" |
30 | ||
6a4c4be8 | 31 | #include <omapip/omapip_p.h> |
fe5b0fdd | 32 | #include <errno.h> |
61b844bf | 33 | |
c1a3453e TL |
34 | #if defined (TRACING) |
35 | static void trace_connection_input_input (trace_type_t *, unsigned, char *); | |
36 | static void trace_connection_input_stop (trace_type_t *); | |
37 | static void trace_connection_output_input (trace_type_t *, unsigned, char *); | |
38 | static void trace_connection_output_stop (trace_type_t *); | |
39 | static trace_type_t *trace_connection_input; | |
40 | static trace_type_t *trace_connection_output; | |
41 | static isc_result_t omapi_connection_reader_trace (omapi_object_t *, | |
42 | unsigned, char *, | |
43 | unsigned *); | |
44 | extern omapi_array_t *omapi_connections; | |
45 | ||
46 | void omapi_buffer_trace_setup () | |
47 | { | |
48 | trace_connection_input = | |
49 | trace_type_register ("connection-input", | |
50 | (void *)0, | |
51 | trace_connection_input_input, | |
52 | trace_connection_input_stop, MDL); | |
53 | trace_connection_output = | |
54 | trace_type_register ("connection-output", | |
55 | (void *)0, | |
56 | trace_connection_output_input, | |
57 | trace_connection_output_stop, MDL); | |
58 | } | |
59 | ||
60 | static void trace_connection_input_input (trace_type_t *ttype, | |
61 | unsigned length, char *buf) | |
62 | { | |
d758ad8c | 63 | unsigned left, taken, cc = 0; |
c1a3453e TL |
64 | char *s; |
65 | int32_t connect_index; | |
66 | isc_result_t status; | |
67 | omapi_connection_object_t *c = (omapi_connection_object_t *)0; | |
68 | ||
69 | memcpy (&connect_index, buf, sizeof connect_index); | |
70 | connect_index = ntohl (connect_index); | |
71 | ||
72 | omapi_array_foreach_begin (omapi_connections, | |
73 | omapi_connection_object_t, lp) { | |
74 | if (lp -> index == ntohl (connect_index)) { | |
75 | omapi_connection_reference (&c, lp, MDL); | |
d758ad8c | 76 | omapi_connection_dereference (&lp, MDL); |
c1a3453e TL |
77 | break; |
78 | } | |
79 | } omapi_array_foreach_end (omapi_connections, | |
80 | omapi_connection_object_t, lp); | |
81 | ||
82 | if (!c) { | |
b209f985 DN |
83 | log_error ("trace connection input: no connection index %ld", |
84 | (long int)connect_index); | |
c1a3453e TL |
85 | return; |
86 | } | |
87 | ||
88 | s = buf + sizeof connect_index; | |
d758ad8c | 89 | left = length - sizeof connect_index; |
c1a3453e TL |
90 | |
91 | while (left) { | |
d758ad8c | 92 | taken = 0; |
c1a3453e | 93 | status = omapi_connection_reader_trace ((omapi_object_t *)c, |
d758ad8c | 94 | left, s, &taken); |
c1a3453e TL |
95 | if (status != ISC_R_SUCCESS) { |
96 | log_error ("trace connection input: %s", | |
97 | isc_result_totext (status)); | |
98 | break; | |
99 | } | |
d758ad8c | 100 | if (!taken) { |
c1a3453e TL |
101 | if (cc > 0) { |
102 | log_error ("trace connection_input: %s", | |
103 | "input is not being consumed."); | |
104 | break; | |
105 | } | |
106 | cc++; | |
d758ad8c | 107 | } else { |
c1a3453e | 108 | cc = 0; |
d758ad8c TL |
109 | left -= taken; |
110 | } | |
c1a3453e | 111 | } |
d758ad8c | 112 | omapi_connection_dereference (&c, MDL); |
c1a3453e TL |
113 | } |
114 | ||
115 | static void trace_connection_input_stop (trace_type_t *ttype) { } | |
116 | ||
117 | static void trace_connection_output_input (trace_type_t *ttype, | |
118 | unsigned length, char *buf) | |
119 | { | |
120 | /* We *could* check to see if the output is correct, but for now | |
121 | we aren't going to do that. */ | |
122 | } | |
123 | ||
124 | static void trace_connection_output_stop (trace_type_t *ttype) { } | |
125 | ||
126 | #endif | |
127 | ||
61b844bf TL |
128 | /* Make sure that at least len bytes are in the input buffer, and if not, |
129 | read enough bytes to make up the difference. */ | |
130 | ||
131 | isc_result_t omapi_connection_reader (omapi_object_t *h) | |
132 | { | |
c1a3453e | 133 | #if defined (TRACING) |
a7394d15 | 134 | return omapi_connection_reader_trace (h, 0, (char *)0, (unsigned *)0); |
c1a3453e TL |
135 | } |
136 | ||
137 | static isc_result_t omapi_connection_reader_trace (omapi_object_t *h, | |
138 | unsigned stuff_len, | |
139 | char *stuff_buf, | |
140 | unsigned *stuff_taken) | |
141 | { | |
142 | #endif | |
61b844bf TL |
143 | omapi_buffer_t *buffer; |
144 | isc_result_t status; | |
b1b7b521 TL |
145 | unsigned read_len; |
146 | int read_status; | |
61b844bf | 147 | omapi_connection_object_t *c; |
b1b7b521 | 148 | unsigned bytes_to_read; |
c1a3453e | 149 | |
61b844bf | 150 | if (!h || h -> type != omapi_type_connection) |
98bf1607 | 151 | return DHCP_R_INVALIDARG; |
61b844bf TL |
152 | c = (omapi_connection_object_t *)h; |
153 | ||
61b844bf TL |
154 | /* See if there are enough bytes. */ |
155 | if (c -> in_bytes >= OMAPI_BUF_SIZE - 1 && | |
156 | c -> in_bytes > c -> bytes_needed) | |
157 | return ISC_R_SUCCESS; | |
158 | ||
c1a3453e | 159 | |
61b844bf TL |
160 | if (c -> inbufs) { |
161 | for (buffer = c -> inbufs; buffer -> next; | |
162 | buffer = buffer -> next) | |
163 | ; | |
c936e8c1 | 164 | if (!BUFFER_BYTES_FREE (buffer)) { |
4bd8800e | 165 | status = omapi_buffer_new (&buffer -> next, MDL); |
61b844bf TL |
166 | if (status != ISC_R_SUCCESS) |
167 | return status; | |
168 | buffer = buffer -> next; | |
169 | } | |
170 | } else { | |
4bd8800e | 171 | status = omapi_buffer_new (&c -> inbufs, MDL); |
61b844bf TL |
172 | if (status != ISC_R_SUCCESS) |
173 | return status; | |
174 | buffer = c -> inbufs; | |
175 | } | |
176 | ||
c936e8c1 | 177 | bytes_to_read = BUFFER_BYTES_FREE (buffer); |
61b844bf TL |
178 | |
179 | while (bytes_to_read) { | |
c936e8c1 TL |
180 | if (buffer -> tail > buffer -> head) |
181 | read_len = sizeof (buffer -> buf) - buffer -> tail; | |
61b844bf | 182 | else |
c936e8c1 | 183 | read_len = buffer -> head - buffer -> tail; |
61b844bf | 184 | |
c1a3453e TL |
185 | #if defined (TRACING) |
186 | if (trace_playback()) { | |
187 | if (stuff_len) { | |
188 | if (read_len > stuff_len) | |
189 | read_len = stuff_len; | |
190 | if (stuff_taken) | |
191 | *stuff_taken += read_len; | |
192 | memcpy (&buffer -> buf [buffer -> tail], | |
193 | stuff_buf, read_len); | |
194 | stuff_len -= read_len; | |
195 | stuff_buf += read_len; | |
196 | read_status = read_len; | |
197 | } else { | |
198 | break; | |
199 | } | |
200 | } else | |
201 | #endif | |
202 | { | |
203 | read_status = read (c -> socket, | |
204 | &buffer -> buf [buffer -> tail], | |
205 | read_len); | |
206 | } | |
61b844bf TL |
207 | if (read_status < 0) { |
208 | if (errno == EWOULDBLOCK) | |
c936e8c1 | 209 | break; |
61b844bf TL |
210 | else if (errno == EIO) |
211 | return ISC_R_IOERROR; | |
212 | else if (errno == EINVAL) | |
98bf1607 | 213 | return DHCP_R_INVALIDARG; |
61b844bf | 214 | else if (errno == ECONNRESET) { |
d889f744 | 215 | omapi_disconnect (h, 1); |
61b844bf TL |
216 | return ISC_R_SHUTTINGDOWN; |
217 | } else | |
218 | return ISC_R_UNEXPECTED; | |
219 | } | |
c1a3453e | 220 | |
c936e8c1 TL |
221 | /* If we got a zero-length read, as opposed to EWOULDBLOCK, |
222 | the remote end closed the connection. */ | |
61b844bf TL |
223 | if (read_status == 0) { |
224 | omapi_disconnect (h, 0); | |
225 | return ISC_R_SHUTTINGDOWN; | |
226 | } | |
c1a3453e TL |
227 | #if defined (TRACING) |
228 | if (trace_record ()) { | |
229 | trace_iov_t iov [2]; | |
230 | int32_t connect_index; | |
231 | ||
232 | connect_index = htonl (c -> index); | |
233 | ||
234 | iov [0].buf = (char *)&connect_index; | |
235 | iov [0].len = sizeof connect_index; | |
236 | iov [1].buf = &buffer -> buf [buffer -> tail]; | |
237 | iov [1].len = read_status; | |
238 | ||
239 | status = (trace_write_packet_iov | |
240 | (trace_connection_input, 2, iov, MDL)); | |
241 | if (status != ISC_R_SUCCESS) { | |
242 | trace_stop (); | |
243 | log_error ("trace connection input: %s", | |
244 | isc_result_totext (status)); | |
245 | } | |
246 | } | |
247 | #endif | |
61b844bf TL |
248 | buffer -> tail += read_status; |
249 | c -> in_bytes += read_status; | |
250 | if (buffer -> tail == sizeof buffer -> buf) | |
251 | buffer -> tail = 0; | |
252 | if (read_status < read_len) | |
253 | break; | |
254 | bytes_to_read -= read_status; | |
255 | } | |
256 | ||
581e37e4 | 257 | if (c -> bytes_needed <= c -> in_bytes) { |
61b844bf TL |
258 | omapi_signal (h, "ready", c); |
259 | } | |
260 | return ISC_R_SUCCESS; | |
261 | } | |
262 | ||
263 | /* Put some bytes into the output buffer for a connection. */ | |
264 | ||
265 | isc_result_t omapi_connection_copyin (omapi_object_t *h, | |
b1b7b521 TL |
266 | const unsigned char *bufp, |
267 | unsigned len) | |
61b844bf TL |
268 | { |
269 | omapi_buffer_t *buffer; | |
270 | isc_result_t status; | |
271 | int bytes_copied = 0; | |
b1b7b521 | 272 | unsigned copy_len; |
49146f3c | 273 | int sig_flags = SIG_MODE_UPDATE; |
61b844bf TL |
274 | omapi_connection_object_t *c; |
275 | ||
0f750c4f | 276 | /* no need to verify len as it's unsigned */ |
61b844bf | 277 | if (!h || h -> type != omapi_type_connection) |
98bf1607 | 278 | return DHCP_R_INVALIDARG; |
61b844bf TL |
279 | c = (omapi_connection_object_t *)h; |
280 | ||
c1d58ae6 TL |
281 | /* If the connection is closed, return an error if the caller |
282 | tries to copy in. */ | |
283 | if (c -> state == omapi_connection_disconnecting || | |
284 | c -> state == omapi_connection_closed) | |
285 | return ISC_R_NOTCONNECTED; | |
286 | ||
61b844bf TL |
287 | if (c -> outbufs) { |
288 | for (buffer = c -> outbufs; | |
289 | buffer -> next; buffer = buffer -> next) | |
290 | ; | |
291 | } else { | |
4bd8800e | 292 | status = omapi_buffer_new (&c -> outbufs, MDL); |
61b844bf | 293 | if (status != ISC_R_SUCCESS) |
98bf1607 | 294 | goto leave; |
61b844bf TL |
295 | buffer = c -> outbufs; |
296 | } | |
297 | ||
298 | while (bytes_copied < len) { | |
299 | /* If there is no space available in this buffer, | |
300 | allocate a new one. */ | |
c936e8c1 | 301 | if (!BUFFER_BYTES_FREE (buffer)) { |
4bd8800e | 302 | status = (omapi_buffer_new (&buffer -> next, MDL)); |
61b844bf | 303 | if (status != ISC_R_SUCCESS) |
98bf1607 | 304 | goto leave; |
61b844bf TL |
305 | buffer = buffer -> next; |
306 | } | |
307 | ||
c936e8c1 TL |
308 | if (buffer -> tail > buffer -> head) |
309 | copy_len = sizeof (buffer -> buf) - buffer -> tail; | |
61b844bf | 310 | else |
c936e8c1 TL |
311 | copy_len = buffer -> head - buffer -> tail; |
312 | ||
61b844bf TL |
313 | if (copy_len > (len - bytes_copied)) |
314 | copy_len = len - bytes_copied; | |
315 | ||
49146f3c DN |
316 | if (c -> out_key) { |
317 | if (!c -> out_context) | |
318 | sig_flags |= SIG_MODE_INIT; | |
319 | status = omapi_connection_sign_data | |
320 | (sig_flags, c -> out_key, &c -> out_context, | |
321 | &bufp [bytes_copied], copy_len, | |
322 | (omapi_typed_data_t **)0); | |
323 | if (status != ISC_R_SUCCESS) | |
98bf1607 | 324 | goto leave; |
49146f3c DN |
325 | } |
326 | ||
61b844bf TL |
327 | memcpy (&buffer -> buf [buffer -> tail], |
328 | &bufp [bytes_copied], copy_len); | |
329 | buffer -> tail += copy_len; | |
330 | c -> out_bytes += copy_len; | |
331 | bytes_copied += copy_len; | |
332 | if (buffer -> tail == sizeof buffer -> buf) | |
333 | buffer -> tail = 0; | |
334 | } | |
98bf1607 SR |
335 | |
336 | status = ISC_R_SUCCESS; | |
337 | ||
338 | leave: | |
339 | /* | |
340 | * If we have any bytes to send and we have a proper io object | |
341 | * inform the socket code that we would like to know when we | |
342 | * can send more bytes. | |
343 | */ | |
344 | if (c->out_bytes != 0) { | |
345 | if ((c->outer != NULL) && | |
346 | (c->outer->type == omapi_type_io_object)) { | |
347 | omapi_io_object_t *io = (omapi_io_object_t *)c->outer; | |
348 | isc_socket_fdwatchpoke(io->fd, | |
349 | ISC_SOCKFDWATCH_WRITE); | |
350 | } | |
351 | } | |
352 | ||
353 | return (status); | |
61b844bf TL |
354 | } |
355 | ||
356 | /* Copy some bytes from the input buffer, and advance the input buffer | |
357 | pointer beyond the bytes copied out. */ | |
358 | ||
e92653f1 TL |
359 | isc_result_t omapi_connection_copyout (unsigned char *buf, |
360 | omapi_object_t *h, | |
b1b7b521 | 361 | unsigned size) |
61b844bf | 362 | { |
b1b7b521 TL |
363 | unsigned bytes_remaining; |
364 | unsigned bytes_this_copy; | |
c936e8c1 | 365 | unsigned first_byte; |
61b844bf TL |
366 | omapi_buffer_t *buffer; |
367 | unsigned char *bufp; | |
49146f3c | 368 | int sig_flags = SIG_MODE_UPDATE; |
61b844bf | 369 | omapi_connection_object_t *c; |
49146f3c | 370 | isc_result_t status; |
61b844bf TL |
371 | |
372 | if (!h || h -> type != omapi_type_connection) | |
98bf1607 | 373 | return DHCP_R_INVALIDARG; |
61b844bf TL |
374 | c = (omapi_connection_object_t *)h; |
375 | ||
376 | if (size > c -> in_bytes) | |
377 | return ISC_R_NOMORE; | |
378 | bufp = buf; | |
379 | bytes_remaining = size; | |
380 | buffer = c -> inbufs; | |
381 | ||
382 | while (bytes_remaining) { | |
383 | if (!buffer) | |
384 | return ISC_R_UNEXPECTED; | |
c936e8c1 TL |
385 | if (BYTES_IN_BUFFER (buffer)) { |
386 | if (buffer -> head == (sizeof buffer -> buf) - 1) | |
387 | first_byte = 0; | |
388 | else | |
389 | first_byte = buffer -> head + 1; | |
390 | ||
391 | if (first_byte > buffer -> tail) { | |
61b844bf | 392 | bytes_this_copy = (sizeof buffer -> buf - |
c936e8c1 | 393 | first_byte); |
61b844bf TL |
394 | } else { |
395 | bytes_this_copy = | |
c936e8c1 | 396 | buffer -> tail - first_byte; |
61b844bf TL |
397 | } |
398 | if (bytes_this_copy > bytes_remaining) | |
399 | bytes_this_copy = bytes_remaining; | |
400 | if (bufp) { | |
49146f3c DN |
401 | if (c -> in_key) { |
402 | if (!c -> in_context) | |
403 | sig_flags |= SIG_MODE_INIT; | |
404 | status = omapi_connection_sign_data | |
405 | (sig_flags, | |
406 | c -> in_key, | |
407 | &c -> in_context, | |
a69fc68a | 408 | (unsigned char *) |
49146f3c DN |
409 | &buffer -> buf [first_byte], |
410 | bytes_this_copy, | |
411 | (omapi_typed_data_t **)0); | |
412 | if (status != ISC_R_SUCCESS) | |
413 | return status; | |
414 | } | |
415 | ||
c936e8c1 | 416 | memcpy (bufp, &buffer -> buf [first_byte], |
61b844bf TL |
417 | bytes_this_copy); |
418 | bufp += bytes_this_copy; | |
419 | } | |
420 | bytes_remaining -= bytes_this_copy; | |
c936e8c1 | 421 | buffer -> head = first_byte + bytes_this_copy - 1; |
61b844bf TL |
422 | c -> in_bytes -= bytes_this_copy; |
423 | } | |
424 | ||
c936e8c1 | 425 | if (!BYTES_IN_BUFFER (buffer)) |
61b844bf TL |
426 | buffer = buffer -> next; |
427 | } | |
428 | ||
429 | /* Get rid of any input buffers that we emptied. */ | |
430 | buffer = (omapi_buffer_t *)0; | |
431 | while (c -> inbufs && | |
c936e8c1 | 432 | !BYTES_IN_BUFFER (c -> inbufs)) { |
61b844bf | 433 | if (c -> inbufs -> next) { |
4bd8800e TL |
434 | omapi_buffer_reference (&buffer, |
435 | c -> inbufs -> next, MDL); | |
436 | omapi_buffer_dereference (&c -> inbufs -> next, MDL); | |
61b844bf | 437 | } |
4bd8800e | 438 | omapi_buffer_dereference (&c -> inbufs, MDL); |
c936e8c1 TL |
439 | if (buffer) { |
440 | omapi_buffer_reference | |
4bd8800e TL |
441 | (&c -> inbufs, buffer, MDL); |
442 | omapi_buffer_dereference (&buffer, MDL); | |
c936e8c1 | 443 | } |
61b844bf TL |
444 | } |
445 | return ISC_R_SUCCESS; | |
446 | } | |
447 | ||
e92653f1 | 448 | isc_result_t omapi_connection_writer (omapi_object_t *h) |
61b844bf | 449 | { |
b1b7b521 | 450 | unsigned bytes_this_write; |
f0b8a59f | 451 | int bytes_written; |
c936e8c1 | 452 | unsigned first_byte; |
61b844bf | 453 | omapi_buffer_t *buffer; |
61b844bf TL |
454 | omapi_connection_object_t *c; |
455 | ||
456 | if (!h || h -> type != omapi_type_connection) | |
98bf1607 | 457 | return DHCP_R_INVALIDARG; |
61b844bf TL |
458 | c = (omapi_connection_object_t *)h; |
459 | ||
460 | /* Already flushed... */ | |
461 | if (!c -> out_bytes) | |
462 | return ISC_R_SUCCESS; | |
463 | ||
464 | buffer = c -> outbufs; | |
465 | ||
466 | while (c -> out_bytes) { | |
467 | if (!buffer) | |
468 | return ISC_R_UNEXPECTED; | |
c936e8c1 TL |
469 | if (BYTES_IN_BUFFER (buffer)) { |
470 | if (buffer -> head == (sizeof buffer -> buf) - 1) | |
471 | first_byte = 0; | |
472 | else | |
473 | first_byte = buffer -> head + 1; | |
474 | ||
475 | if (first_byte > buffer -> tail) { | |
61b844bf | 476 | bytes_this_write = (sizeof buffer -> buf - |
c936e8c1 | 477 | first_byte); |
61b844bf TL |
478 | } else { |
479 | bytes_this_write = | |
c936e8c1 | 480 | buffer -> tail - first_byte; |
61b844bf TL |
481 | } |
482 | bytes_written = write (c -> socket, | |
c936e8c1 | 483 | &buffer -> buf [first_byte], |
61b844bf TL |
484 | bytes_this_write); |
485 | /* If the write failed with EWOULDBLOCK or we wrote | |
486 | zero bytes, a further write would block, so we have | |
487 | flushed as much as we can for now. Other errors | |
488 | are really errors. */ | |
489 | if (bytes_written < 0) { | |
490 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
98bf1607 | 491 | return ISC_R_INPROGRESS; |
61b844bf TL |
492 | else if (errno == EPIPE) |
493 | return ISC_R_NOCONN; | |
1bd18042 | 494 | #ifdef EDQUOT |
61b844bf | 495 | else if (errno == EFBIG || errno == EDQUOT) |
1bd18042 TL |
496 | #else |
497 | else if (errno == EFBIG) | |
498 | #endif | |
61b844bf TL |
499 | return ISC_R_NORESOURCES; |
500 | else if (errno == ENOSPC) | |
501 | return ISC_R_NOSPACE; | |
502 | else if (errno == EIO) | |
503 | return ISC_R_IOERROR; | |
504 | else if (errno == EINVAL) | |
98bf1607 | 505 | return DHCP_R_INVALIDARG; |
61b844bf TL |
506 | else if (errno == ECONNRESET) |
507 | return ISC_R_SHUTTINGDOWN; | |
508 | else | |
509 | return ISC_R_UNEXPECTED; | |
510 | } | |
511 | if (bytes_written == 0) | |
98bf1607 | 512 | return ISC_R_INPROGRESS; |
61b844bf | 513 | |
c1a3453e TL |
514 | #if defined (TRACING) |
515 | if (trace_record ()) { | |
66cebfcb | 516 | isc_result_t status; |
c1a3453e TL |
517 | trace_iov_t iov [2]; |
518 | int32_t connect_index; | |
519 | ||
520 | connect_index = htonl (c -> index); | |
521 | ||
522 | iov [0].buf = (char *)&connect_index; | |
523 | iov [0].len = sizeof connect_index; | |
524 | iov [1].buf = &buffer -> buf [buffer -> tail]; | |
525 | iov [1].len = bytes_written; | |
526 | ||
527 | status = (trace_write_packet_iov | |
528 | (trace_connection_input, 2, iov, | |
529 | MDL)); | |
530 | if (status != ISC_R_SUCCESS) { | |
531 | trace_stop (); | |
532 | log_error ("trace %s output: %s", | |
533 | "connection", | |
534 | isc_result_totext (status)); | |
535 | } | |
536 | } | |
537 | #endif | |
538 | ||
c936e8c1 | 539 | buffer -> head = first_byte + bytes_written - 1; |
61b844bf TL |
540 | c -> out_bytes -= bytes_written; |
541 | ||
542 | /* If we didn't finish out the write, we filled the | |
543 | O.S. output buffer and a further write would block, | |
544 | so stop trying to flush now. */ | |
545 | if (bytes_written != bytes_this_write) | |
98bf1607 | 546 | return ISC_R_INPROGRESS; |
61b844bf TL |
547 | } |
548 | ||
c936e8c1 | 549 | if (!BYTES_IN_BUFFER (buffer)) |
61b844bf TL |
550 | buffer = buffer -> next; |
551 | } | |
552 | ||
553 | /* Get rid of any output buffers we emptied. */ | |
554 | buffer = (omapi_buffer_t *)0; | |
555 | while (c -> outbufs && | |
c936e8c1 | 556 | !BYTES_IN_BUFFER (c -> outbufs)) { |
61b844bf | 557 | if (c -> outbufs -> next) { |
4bd8800e TL |
558 | omapi_buffer_reference (&buffer, |
559 | c -> outbufs -> next, MDL); | |
560 | omapi_buffer_dereference (&c -> outbufs -> next, MDL); | |
61b844bf | 561 | } |
4bd8800e | 562 | omapi_buffer_dereference (&c -> outbufs, MDL); |
61b844bf | 563 | if (buffer) { |
4bd8800e TL |
564 | omapi_buffer_reference (&c -> outbufs, buffer, MDL); |
565 | omapi_buffer_dereference (&buffer, MDL); | |
61b844bf TL |
566 | } |
567 | } | |
1a6b62fe TM |
568 | |
569 | /* If we had data left to write when we're told to disconnect, | |
570 | * we need recall disconnect, now that we're done writing. | |
571 | * See rt46767. */ | |
572 | if (c->out_bytes == 0 && c->state == omapi_connection_disconnecting) { | |
573 | omapi_disconnect (h, 1); | |
574 | return ISC_R_SHUTTINGDOWN; | |
575 | } | |
576 | ||
61b844bf TL |
577 | return ISC_R_SUCCESS; |
578 | } | |
579 | ||
580 | isc_result_t omapi_connection_get_uint32 (omapi_object_t *c, | |
581 | u_int32_t *result) | |
582 | { | |
583 | u_int32_t inbuf; | |
584 | isc_result_t status; | |
585 | ||
586 | status = omapi_connection_copyout ((unsigned char *)&inbuf, | |
587 | c, sizeof inbuf); | |
588 | if (status != ISC_R_SUCCESS) | |
589 | return status; | |
590 | ||
591 | *result = ntohl (inbuf); | |
592 | return ISC_R_SUCCESS; | |
593 | } | |
594 | ||
595 | isc_result_t omapi_connection_put_uint32 (omapi_object_t *c, | |
596 | u_int32_t value) | |
597 | { | |
598 | u_int32_t inbuf; | |
61b844bf TL |
599 | |
600 | inbuf = htonl (value); | |
601 | ||
602 | return omapi_connection_copyin (c, (unsigned char *)&inbuf, | |
603 | sizeof inbuf); | |
604 | } | |
605 | ||
606 | isc_result_t omapi_connection_get_uint16 (omapi_object_t *c, | |
607 | u_int16_t *result) | |
608 | { | |
609 | u_int16_t inbuf; | |
610 | isc_result_t status; | |
611 | ||
612 | status = omapi_connection_copyout ((unsigned char *)&inbuf, | |
613 | c, sizeof inbuf); | |
614 | if (status != ISC_R_SUCCESS) | |
615 | return status; | |
616 | ||
617 | *result = ntohs (inbuf); | |
618 | return ISC_R_SUCCESS; | |
619 | } | |
620 | ||
621 | isc_result_t omapi_connection_put_uint16 (omapi_object_t *c, | |
b1b7b521 | 622 | u_int32_t value) |
61b844bf TL |
623 | { |
624 | u_int16_t inbuf; | |
61b844bf TL |
625 | |
626 | inbuf = htons (value); | |
627 | ||
628 | return omapi_connection_copyin (c, (unsigned char *)&inbuf, | |
629 | sizeof inbuf); | |
630 | } | |
631 | ||
581e37e4 TL |
632 | isc_result_t omapi_connection_write_typed_data (omapi_object_t *c, |
633 | omapi_typed_data_t *data) | |
634 | { | |
635 | isc_result_t status; | |
636 | omapi_handle_t handle; | |
637 | ||
84b00685 TL |
638 | /* Null data is valid. */ |
639 | if (!data) | |
640 | return omapi_connection_put_uint32 (c, 0); | |
641 | ||
581e37e4 TL |
642 | switch (data -> type) { |
643 | case omapi_datatype_int: | |
644 | status = omapi_connection_put_uint32 (c, sizeof (u_int32_t)); | |
645 | if (status != ISC_R_SUCCESS) | |
646 | return status; | |
b1b7b521 TL |
647 | return omapi_connection_put_uint32 (c, ((u_int32_t) |
648 | (data -> u.integer))); | |
581e37e4 TL |
649 | |
650 | case omapi_datatype_string: | |
651 | case omapi_datatype_data: | |
652 | status = omapi_connection_put_uint32 (c, data -> u.buffer.len); | |
653 | if (status != ISC_R_SUCCESS) | |
654 | return status; | |
0e603324 TL |
655 | if (data -> u.buffer.len) |
656 | return omapi_connection_copyin | |
657 | (c, data -> u.buffer.value, | |
658 | data -> u.buffer.len); | |
659 | return ISC_R_SUCCESS; | |
581e37e4 TL |
660 | |
661 | case omapi_datatype_object: | |
0e603324 TL |
662 | if (data -> u.object) { |
663 | status = omapi_object_handle (&handle, | |
664 | data -> u.object); | |
665 | if (status != ISC_R_SUCCESS) | |
666 | return status; | |
667 | } else | |
668 | handle = 0; | |
581e37e4 TL |
669 | status = omapi_connection_put_uint32 (c, sizeof handle); |
670 | if (status != ISC_R_SUCCESS) | |
671 | return status; | |
672 | return omapi_connection_put_uint32 (c, handle); | |
673 | ||
674 | } | |
98bf1607 | 675 | return DHCP_R_INVALIDARG; |
581e37e4 TL |
676 | } |
677 | ||
b1b7b521 | 678 | isc_result_t omapi_connection_put_name (omapi_object_t *c, const char *name) |
581e37e4 TL |
679 | { |
680 | isc_result_t status; | |
b1b7b521 | 681 | unsigned len = strlen (name); |
581e37e4 TL |
682 | |
683 | status = omapi_connection_put_uint16 (c, len); | |
684 | if (status != ISC_R_SUCCESS) | |
685 | return status; | |
b1b7b521 | 686 | return omapi_connection_copyin (c, (const unsigned char *)name, len); |
581e37e4 TL |
687 | } |
688 | ||
b1b7b521 TL |
689 | isc_result_t omapi_connection_put_string (omapi_object_t *c, |
690 | const char *string) | |
581e37e4 TL |
691 | { |
692 | isc_result_t status; | |
b1b7b521 | 693 | unsigned len; |
581e37e4 | 694 | |
0e603324 TL |
695 | if (string) |
696 | len = strlen (string); | |
697 | else | |
698 | len = 0; | |
581e37e4 TL |
699 | |
700 | status = omapi_connection_put_uint32 (c, len); | |
701 | if (status != ISC_R_SUCCESS) | |
702 | return status; | |
0e603324 TL |
703 | if (len) |
704 | return omapi_connection_copyin | |
705 | (c, (const unsigned char *)string, len); | |
706 | return ISC_R_SUCCESS; | |
581e37e4 TL |
707 | } |
708 | ||
709 | isc_result_t omapi_connection_put_handle (omapi_object_t *c, omapi_object_t *h) | |
710 | { | |
711 | isc_result_t status; | |
712 | omapi_handle_t handle; | |
713 | ||
0e603324 TL |
714 | if (h) { |
715 | status = omapi_object_handle (&handle, h); | |
716 | if (status != ISC_R_SUCCESS) | |
717 | return status; | |
718 | } else | |
719 | handle = 0; /* The null handle. */ | |
581e37e4 TL |
720 | status = omapi_connection_put_uint32 (c, sizeof handle); |
721 | if (status != ISC_R_SUCCESS) | |
722 | return status; | |
723 | return omapi_connection_put_uint32 (c, handle); | |
724 | } | |
08b2d347 SR |
725 | |
726 | isc_result_t omapi_connection_put_named_uint32 (omapi_object_t *c, | |
727 | const char *name, | |
728 | u_int32_t value) | |
729 | { | |
730 | isc_result_t status; | |
731 | ||
732 | status = omapi_connection_put_name(c, name); | |
733 | if (status != ISC_R_SUCCESS) | |
734 | return (status); | |
735 | ||
736 | status = omapi_connection_put_uint32(c, sizeof(u_int32_t)); | |
737 | if (status != ISC_R_SUCCESS) | |
738 | return (status); | |
739 | ||
740 | status = omapi_connection_put_uint32(c, value); | |
741 | return (status); | |
742 | } | |
743 |