| File: | src/usr.sbin/rpki-client/rrdp.c |
| Warning: | line 388, column 3 Value stored to 's' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: rrdp.c,v 1.19 2021/12/22 09:35:14 claudio Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2020 Nils Fisher <nils_fisher@hotmail.com> |
| 4 | * Copyright (c) 2021 Claudio Jeker <claudio@openbsd.org> |
| 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | #include <sys/queue.h> |
| 19 | #include <sys/stat.h> |
| 20 | |
| 21 | #include <assert.h> |
| 22 | #include <err.h> |
| 23 | #include <errno(*__errno()).h> |
| 24 | #include <fcntl.h> |
| 25 | #include <limits.h> |
| 26 | #include <poll.h> |
| 27 | #include <string.h> |
| 28 | #include <unistd.h> |
| 29 | #include <imsg.h> |
| 30 | |
| 31 | #include <expat.h> |
| 32 | #include <openssl/sha.h> |
| 33 | |
| 34 | #include "extern.h" |
| 35 | #include "rrdp.h" |
| 36 | |
| 37 | #define MAX_SESSIONS12 12 |
| 38 | #define READ_BUF_SIZE(32 * 1024) (32 * 1024) |
| 39 | |
| 40 | static struct msgbuf msgq; |
| 41 | |
| 42 | #define RRDP_STATE_REQ0x01 0x01 |
| 43 | #define RRDP_STATE_WAIT0x02 0x02 |
| 44 | #define RRDP_STATE_PARSE0x04 0x04 |
| 45 | #define RRDP_STATE_PARSE_ERROR0x08 0x08 |
| 46 | #define RRDP_STATE_PARSE_DONE0x10 0x10 |
| 47 | #define RRDP_STATE_HTTP_DONE0x20 0x20 |
| 48 | #define RRDP_STATE_DONE(0x10 | 0x20) (RRDP_STATE_PARSE_DONE0x10 | RRDP_STATE_HTTP_DONE0x20) |
| 49 | |
| 50 | struct rrdp { |
| 51 | TAILQ_ENTRY(rrdp)struct { struct rrdp *tqe_next; struct rrdp **tqe_prev; } entry; |
| 52 | unsigned int id; |
| 53 | char *notifyuri; |
| 54 | char *local; |
| 55 | char *last_mod; |
| 56 | |
| 57 | struct pollfd *pfd; |
| 58 | int infd; |
| 59 | int state; |
| 60 | unsigned int file_pending; |
| 61 | unsigned int file_failed; |
| 62 | enum http_result res; |
| 63 | enum rrdp_task task; |
| 64 | |
| 65 | char hash[SHA256_DIGEST_LENGTH32]; |
| 66 | SHA256_CTX ctx; |
| 67 | |
| 68 | struct rrdp_session repository; |
| 69 | struct rrdp_session current; |
| 70 | XML_Parser parser; |
| 71 | struct notification_xml *nxml; |
| 72 | struct snapshot_xml *sxml; |
| 73 | struct delta_xml *dxml; |
| 74 | }; |
| 75 | |
| 76 | TAILQ_HEAD(,rrdp)struct { struct rrdp *tqh_first; struct rrdp **tqh_last; } states = TAILQ_HEAD_INITIALIZER(states){ ((void*)0), &(states).tqh_first }; |
| 77 | |
| 78 | char * |
| 79 | xstrdup(const char *s) |
| 80 | { |
| 81 | char *r; |
| 82 | if ((r = strdup(s)) == NULL((void*)0)) |
| 83 | err(1, "strdup"); |
| 84 | return r; |
| 85 | } |
| 86 | |
| 87 | /* |
| 88 | * Report back that a RRDP request finished. |
| 89 | * ok should only be set to 1 if the cache is now up-to-date. |
| 90 | */ |
| 91 | static void |
| 92 | rrdp_done(unsigned int id, int ok) |
| 93 | { |
| 94 | enum rrdp_msg type = RRDP_END; |
| 95 | struct ibuf *b; |
| 96 | |
| 97 | b = io_new_buffer(); |
| 98 | io_simple_buffer(b, &type, sizeof(type)); |
| 99 | io_simple_buffer(b, &id, sizeof(id)); |
| 100 | io_simple_buffer(b, &ok, sizeof(ok)); |
| 101 | io_close_buffer(&msgq, b); |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * Request an URI to be fetched via HTTPS. |
| 106 | * The main process will respond with a RRDP_HTTP_INI which includes |
| 107 | * the file descriptor to read from. RRDP_HTTP_FIN is sent at the |
| 108 | * end of the request with the HTTP status code and last modified timestamp. |
| 109 | * If the request should not set the If-Modified-Since: header then last_mod |
| 110 | * should be set to NULL, else it should point to a proper date string. |
| 111 | */ |
| 112 | static void |
| 113 | rrdp_http_req(unsigned int id, const char *uri, const char *last_mod) |
| 114 | { |
| 115 | enum rrdp_msg type = RRDP_HTTP_REQ; |
| 116 | struct ibuf *b; |
| 117 | |
| 118 | b = io_new_buffer(); |
| 119 | io_simple_buffer(b, &type, sizeof(type)); |
| 120 | io_simple_buffer(b, &id, sizeof(id)); |
| 121 | io_str_buffer(b, uri); |
| 122 | io_str_buffer(b, last_mod); |
| 123 | io_close_buffer(&msgq, b); |
| 124 | } |
| 125 | |
| 126 | /* |
| 127 | * Send the session state to the main process so it gets stored. |
| 128 | */ |
| 129 | static void |
| 130 | rrdp_state_send(struct rrdp *s) |
| 131 | { |
| 132 | enum rrdp_msg type = RRDP_SESSION; |
| 133 | struct ibuf *b; |
| 134 | |
| 135 | b = io_new_buffer(); |
| 136 | io_simple_buffer(b, &type, sizeof(type)); |
| 137 | io_simple_buffer(b, &s->id, sizeof(s->id)); |
| 138 | io_str_buffer(b, s->current.session_id); |
| 139 | io_simple_buffer(b, &s->current.serial, sizeof(s->current.serial)); |
| 140 | io_str_buffer(b, s->current.last_mod); |
| 141 | io_close_buffer(&msgq, b); |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Send a blob of data to the main process to store it in the repository. |
| 146 | */ |
| 147 | void |
| 148 | rrdp_publish_file(struct rrdp *s, struct publish_xml *pxml, |
| 149 | unsigned char *data, size_t datasz) |
| 150 | { |
| 151 | enum rrdp_msg type = RRDP_FILE; |
| 152 | struct ibuf *b; |
| 153 | |
| 154 | /* only send files if the fetch did not fail already */ |
| 155 | if (s->file_failed == 0) { |
| 156 | b = io_new_buffer(); |
| 157 | io_simple_buffer(b, &type, sizeof(type)); |
| 158 | io_simple_buffer(b, &s->id, sizeof(s->id)); |
| 159 | io_simple_buffer(b, &pxml->type, sizeof(pxml->type)); |
| 160 | if (pxml->type != PUB_ADD) |
| 161 | io_simple_buffer(b, &pxml->hash, sizeof(pxml->hash)); |
| 162 | io_str_buffer(b, pxml->uri); |
| 163 | io_buf_buffer(b, data, datasz); |
| 164 | io_close_buffer(&msgq, b); |
| 165 | s->file_pending++; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | static struct rrdp * |
| 170 | rrdp_new(unsigned int id, char *local, char *notify, char *session_id, |
| 171 | long long serial, char *last_mod) |
| 172 | { |
| 173 | struct rrdp *s; |
| 174 | |
| 175 | if ((s = calloc(1, sizeof(*s))) == NULL((void*)0)) |
| 176 | err(1, NULL((void*)0)); |
| 177 | |
| 178 | s->infd = -1; |
| 179 | s->id = id; |
| 180 | s->local = local; |
| 181 | s->notifyuri = notify; |
| 182 | s->repository.session_id = session_id; |
| 183 | s->repository.serial = serial; |
| 184 | s->repository.last_mod = last_mod; |
| 185 | |
| 186 | s->state = RRDP_STATE_REQ0x01; |
| 187 | if ((s->parser = XML_ParserCreate("US-ASCII")) == NULL((void*)0)) |
| 188 | err(1, "XML_ParserCreate"); |
| 189 | |
| 190 | s->nxml = new_notification_xml(s->parser, &s->repository, &s->current, |
| 191 | notify); |
| 192 | |
| 193 | TAILQ_INSERT_TAIL(&states, s, entry)do { (s)->entry.tqe_next = ((void*)0); (s)->entry.tqe_prev = (&states)->tqh_last; *(&states)->tqh_last = ( s); (&states)->tqh_last = &(s)->entry.tqe_next; } while (0); |
| 194 | |
| 195 | return s; |
| 196 | } |
| 197 | |
| 198 | static void |
| 199 | rrdp_free(struct rrdp *s) |
| 200 | { |
| 201 | if (s == NULL((void*)0)) |
| 202 | return; |
| 203 | |
| 204 | TAILQ_REMOVE(&states, s, entry)do { if (((s)->entry.tqe_next) != ((void*)0)) (s)->entry .tqe_next->entry.tqe_prev = (s)->entry.tqe_prev; else ( &states)->tqh_last = (s)->entry.tqe_prev; *(s)-> entry.tqe_prev = (s)->entry.tqe_next; ; ; } while (0); |
| 205 | |
| 206 | free_notification_xml(s->nxml); |
| 207 | free_snapshot_xml(s->sxml); |
| 208 | free_delta_xml(s->dxml); |
| 209 | |
| 210 | if (s->parser) |
| 211 | XML_ParserFree(s->parser); |
| 212 | if (s->infd != -1) |
| 213 | close(s->infd); |
| 214 | free(s->notifyuri); |
| 215 | free(s->local); |
| 216 | free(s->last_mod); |
| 217 | free(s->repository.last_mod); |
| 218 | free(s->repository.session_id); |
| 219 | free(s->current.last_mod); |
| 220 | free(s->current.session_id); |
| 221 | |
| 222 | free(s); |
| 223 | } |
| 224 | |
| 225 | static struct rrdp * |
| 226 | rrdp_get(unsigned int id) |
| 227 | { |
| 228 | struct rrdp *s; |
| 229 | |
| 230 | TAILQ_FOREACH(s, &states, entry)for((s) = ((&states)->tqh_first); (s) != ((void*)0); ( s) = ((s)->entry.tqe_next)) |
| 231 | if (s->id == id) |
| 232 | break; |
| 233 | return s; |
| 234 | } |
| 235 | |
| 236 | static void |
| 237 | rrdp_failed(struct rrdp *s) |
| 238 | { |
| 239 | unsigned int id = s->id; |
| 240 | |
| 241 | /* reset file state before retrying */ |
| 242 | s->file_failed = 0; |
| 243 | |
| 244 | /* XXX MUST do some cleanup in the repo here */ |
| 245 | if (s->task == DELTA) { |
| 246 | /* fallback to a snapshot as per RFC8182 */ |
| 247 | free_delta_xml(s->dxml); |
| 248 | s->dxml = NULL((void*)0); |
| 249 | s->sxml = new_snapshot_xml(s->parser, &s->current, s); |
| 250 | s->task = SNAPSHOT; |
| 251 | s->state = RRDP_STATE_REQ0x01; |
| 252 | logx("%s: delta sync failed, fallback to snapshot", s->local); |
| 253 | } else { |
| 254 | /* |
| 255 | * TODO: update state to track recurring failures |
| 256 | * and fall back to rsync after a while. |
| 257 | * This should probably happen in the main process. |
| 258 | */ |
| 259 | rrdp_free(s); |
| 260 | rrdp_done(id, 0); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | static void |
| 265 | rrdp_finished(struct rrdp *s) |
| 266 | { |
| 267 | unsigned int id = s->id; |
| 268 | |
| 269 | /* check if all parts of the process have finished */ |
| 270 | if ((s->state & RRDP_STATE_DONE(0x10 | 0x20)) != RRDP_STATE_DONE(0x10 | 0x20)) |
| 271 | return; |
| 272 | |
| 273 | /* still some files pending */ |
| 274 | if (s->file_pending > 0) |
| 275 | return; |
| 276 | |
| 277 | if (s->state & RRDP_STATE_PARSE_ERROR0x08) { |
| 278 | rrdp_failed(s); |
| 279 | return; |
| 280 | } |
| 281 | |
| 282 | if (s->res == HTTP_OK) { |
| 283 | XML_Parser p = s->parser; |
| 284 | |
| 285 | /* |
| 286 | * Finalize parsing on success to be sure that |
| 287 | * all of the XML is correct. Needs to be done here |
| 288 | * since the call would most probably fail for non |
| 289 | * successful data fetches. |
| 290 | */ |
| 291 | if (XML_Parse(p, NULL((void*)0), 0, 1) != XML_STATUS_OKXML_STATUS_OK) { |
| 292 | warnx("%s: XML error at line %llu: %s", s->local, |
| 293 | (unsigned long long)XML_GetCurrentLineNumber(p), |
| 294 | XML_ErrorString(XML_GetErrorCode(p))); |
| 295 | rrdp_failed(s); |
| 296 | return; |
| 297 | } |
| 298 | |
| 299 | /* If a file caused an error fail the update */ |
| 300 | if (s->file_failed > 0) { |
| 301 | rrdp_failed(s); |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | switch (s->task) { |
| 306 | case NOTIFICATION: |
| 307 | s->task = notification_done(s->nxml, s->last_mod); |
| 308 | s->last_mod = NULL((void*)0); |
| 309 | switch (s->task) { |
| 310 | case NOTIFICATION: |
| 311 | logx("%s: repository not modified", s->local); |
| 312 | rrdp_state_send(s); |
| 313 | rrdp_free(s); |
| 314 | rrdp_done(id, 1); |
| 315 | break; |
| 316 | case SNAPSHOT: |
| 317 | logx("%s: downloading snapshot", s->local); |
| 318 | s->sxml = new_snapshot_xml(p, &s->current, s); |
| 319 | s->state = RRDP_STATE_REQ0x01; |
| 320 | break; |
| 321 | case DELTA: |
| 322 | logx("%s: downloading %lld deltas", s->local, |
| 323 | s->repository.serial - s->current.serial); |
| 324 | s->dxml = new_delta_xml(p, &s->current, s); |
| 325 | s->state = RRDP_STATE_REQ0x01; |
| 326 | break; |
| 327 | } |
| 328 | break; |
| 329 | case SNAPSHOT: |
| 330 | rrdp_state_send(s); |
| 331 | rrdp_free(s); |
| 332 | rrdp_done(id, 1); |
| 333 | break; |
| 334 | case DELTA: |
| 335 | if (notification_delta_done(s->nxml)) { |
| 336 | /* finished */ |
| 337 | rrdp_state_send(s); |
| 338 | rrdp_free(s); |
| 339 | rrdp_done(id, 1); |
| 340 | } else { |
| 341 | /* reset delta parser for next delta */ |
| 342 | free_delta_xml(s->dxml); |
| 343 | s->dxml = new_delta_xml(p, &s->current, s); |
| 344 | s->state = RRDP_STATE_REQ0x01; |
| 345 | } |
| 346 | break; |
| 347 | } |
| 348 | } else if (s->res == HTTP_NOT_MOD && s->task == NOTIFICATION) { |
| 349 | logx("%s: notification file not modified", s->local); |
| 350 | /* no need to update state file */ |
| 351 | rrdp_free(s); |
| 352 | rrdp_done(id, 1); |
| 353 | } else { |
| 354 | rrdp_failed(s); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | static void |
| 359 | rrdp_input_handler(int fd) |
| 360 | { |
| 361 | static struct ibuf *inbuf; |
| 362 | char *local, *notify, *session_id, *last_mod; |
| 363 | struct ibuf *b; |
| 364 | struct rrdp *s; |
| 365 | enum rrdp_msg type; |
| 366 | enum http_result res; |
| 367 | long long serial; |
| 368 | unsigned int id; |
| 369 | int ok; |
| 370 | |
| 371 | b = io_buf_recvfd(fd, &inbuf); |
| 372 | if (b == NULL((void*)0)) |
| 373 | return; |
| 374 | |
| 375 | io_read_buf(b, &type, sizeof(type)); |
| 376 | io_read_buf(b, &id, sizeof(id)); |
| 377 | |
| 378 | switch (type) { |
| 379 | case RRDP_START: |
| 380 | io_read_str(b, &local); |
| 381 | io_read_str(b, ¬ify); |
| 382 | io_read_str(b, &session_id); |
| 383 | io_read_buf(b, &serial, sizeof(serial)); |
| 384 | io_read_str(b, &last_mod); |
| 385 | if (b->fd != -1) |
| 386 | errx(1, "received unexpected fd"); |
| 387 | |
| 388 | s = rrdp_new(id, local, notify, session_id, serial, last_mod); |
Value stored to 's' is never read | |
| 389 | break; |
| 390 | case RRDP_HTTP_INI: |
| 391 | if (b->fd == -1) |
| 392 | errx(1, "expected fd not received"); |
| 393 | s = rrdp_get(id); |
| 394 | if (s == NULL((void*)0)) |
| 395 | errx(1, "rrdp session %u does not exist", id); |
| 396 | if (s->state != RRDP_STATE_WAIT0x02) |
| 397 | errx(1, "%s: bad internal state", s->local); |
| 398 | |
| 399 | s->infd = b->fd; |
| 400 | s->state = RRDP_STATE_PARSE0x04; |
| 401 | break; |
| 402 | case RRDP_HTTP_FIN: |
| 403 | io_read_buf(b, &res, sizeof(res)); |
| 404 | io_read_str(b, &last_mod); |
| 405 | if (b->fd != -1) |
| 406 | errx(1, "received unexpected fd"); |
| 407 | |
| 408 | s = rrdp_get(id); |
| 409 | if (s == NULL((void*)0)) |
| 410 | errx(1, "rrdp session %u does not exist", id); |
| 411 | if (!(s->state & RRDP_STATE_PARSE0x04)) |
| 412 | errx(1, "%s: bad internal state", s->local); |
| 413 | |
| 414 | s->res = res; |
| 415 | s->last_mod = last_mod; |
| 416 | s->state |= RRDP_STATE_HTTP_DONE0x20; |
| 417 | rrdp_finished(s); |
| 418 | break; |
| 419 | case RRDP_FILE: |
| 420 | s = rrdp_get(id); |
| 421 | if (s == NULL((void*)0)) |
| 422 | errx(1, "rrdp session %u does not exist", id); |
| 423 | if (b->fd != -1) |
| 424 | errx(1, "received unexpected fd"); |
| 425 | io_read_buf(b, &ok, sizeof(ok)); |
| 426 | if (ok != 1) |
| 427 | s->file_failed++; |
| 428 | s->file_pending--; |
| 429 | if (s->file_pending == 0) |
| 430 | rrdp_finished(s); |
| 431 | break; |
| 432 | default: |
| 433 | errx(1, "unexpected message %d", type); |
| 434 | } |
| 435 | ibuf_free(b); |
| 436 | } |
| 437 | |
| 438 | static void |
| 439 | rrdp_data_handler(struct rrdp *s) |
| 440 | { |
| 441 | char buf[READ_BUF_SIZE(32 * 1024)]; |
| 442 | XML_Parser p = s->parser; |
| 443 | ssize_t len; |
| 444 | |
| 445 | len = read(s->infd, buf, sizeof(buf)); |
| 446 | if (len == -1) { |
| 447 | s->state |= RRDP_STATE_PARSE_ERROR0x08; |
| 448 | warn("%s: read failure", s->local); |
| 449 | return; |
| 450 | } |
| 451 | if ((s->state & RRDP_STATE_PARSE0x04) == 0) |
| 452 | errx(1, "%s: bad parser state", s->local); |
| 453 | if (len == 0) { |
| 454 | /* parser stage finished */ |
| 455 | close(s->infd); |
| 456 | s->infd = -1; |
| 457 | |
| 458 | if (s->task != NOTIFICATION) { |
| 459 | char h[SHA256_DIGEST_LENGTH32]; |
| 460 | |
| 461 | SHA256_Final(h, &s->ctx); |
| 462 | if (memcmp(s->hash, h, sizeof(s->hash)) != 0) { |
| 463 | s->state |= RRDP_STATE_PARSE_ERROR0x08; |
| 464 | warnx("%s: bad message digest", s->local); |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | s->state |= RRDP_STATE_PARSE_DONE0x10; |
| 469 | rrdp_finished(s); |
| 470 | return; |
| 471 | } |
| 472 | |
| 473 | /* parse and maybe hash the bytes just read */ |
| 474 | if (s->task != NOTIFICATION) |
| 475 | SHA256_Update(&s->ctx, buf, len); |
| 476 | if ((s->state & RRDP_STATE_PARSE_ERROR0x08) == 0 && |
| 477 | XML_Parse(p, buf, len, 0) != XML_STATUS_OKXML_STATUS_OK) { |
| 478 | warnx("%s: parse error at line %llu: %s", s->local, |
| 479 | (unsigned long long)XML_GetCurrentLineNumber(p), |
| 480 | XML_ErrorString(XML_GetErrorCode(p))); |
| 481 | s->state |= RRDP_STATE_PARSE_ERROR0x08; |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | void |
| 486 | proc_rrdp(int fd) |
| 487 | { |
| 488 | struct pollfd pfds[MAX_SESSIONS12 + 1]; |
| 489 | struct rrdp *s, *ns; |
| 490 | size_t i; |
| 491 | |
| 492 | if (pledge("stdio recvfd", NULL((void*)0)) == -1) |
| 493 | err(1, "pledge"); |
| 494 | |
| 495 | msgbuf_init(&msgq); |
| 496 | msgq.fd = fd; |
| 497 | |
| 498 | for (;;) { |
| 499 | i = 1; |
| 500 | memset(&pfds, 0, sizeof(pfds)); |
| 501 | TAILQ_FOREACH(s, &states, entry)for((s) = ((&states)->tqh_first); (s) != ((void*)0); ( s) = ((s)->entry.tqe_next)) { |
| 502 | if (i >= MAX_SESSIONS12 + 1) { |
| 503 | /* not enough sessions, wait for better times */ |
| 504 | s->pfd = NULL((void*)0); |
| 505 | continue; |
| 506 | } |
| 507 | /* request new assets when there are free sessions */ |
| 508 | if (s->state == RRDP_STATE_REQ0x01) { |
| 509 | const char *uri; |
| 510 | switch (s->task) { |
| 511 | case NOTIFICATION: |
| 512 | rrdp_http_req(s->id, s->notifyuri, |
| 513 | s->repository.last_mod); |
| 514 | break; |
| 515 | case SNAPSHOT: |
| 516 | case DELTA: |
| 517 | uri = notification_get_next(s->nxml, |
| 518 | s->hash, sizeof(s->hash), |
| 519 | s->task); |
| 520 | SHA256_Init(&s->ctx); |
| 521 | rrdp_http_req(s->id, uri, NULL((void*)0)); |
| 522 | break; |
| 523 | } |
| 524 | s->state = RRDP_STATE_WAIT0x02; |
| 525 | } |
| 526 | s->pfd = pfds + i++; |
| 527 | s->pfd->fd = s->infd; |
| 528 | s->pfd->events = POLLIN0x0001; |
| 529 | } |
| 530 | |
| 531 | /* |
| 532 | * Update main fd last. |
| 533 | * The previous loop may have enqueue messages. |
| 534 | */ |
| 535 | pfds[0].fd = fd; |
| 536 | pfds[0].events = POLLIN0x0001; |
| 537 | if (msgq.queued) |
| 538 | pfds[0].events |= POLLOUT0x0004; |
| 539 | |
| 540 | if (poll(pfds, i, INFTIM(-1)) == -1) |
| 541 | err(1, "poll"); |
| 542 | |
| 543 | if (pfds[0].revents & POLLHUP0x0010) |
| 544 | break; |
| 545 | if (pfds[0].revents & POLLOUT0x0004) { |
| 546 | switch (msgbuf_write(&msgq)) { |
| 547 | case 0: |
| 548 | errx(1, "write: connection closed"); |
| 549 | case -1: |
| 550 | err(1, "write"); |
| 551 | } |
| 552 | } |
| 553 | if (pfds[0].revents & POLLIN0x0001) |
| 554 | rrdp_input_handler(fd); |
| 555 | |
| 556 | TAILQ_FOREACH_SAFE(s, &states, entry, ns)for ((s) = ((&states)->tqh_first); (s) != ((void*)0) && ((ns) = ((s)->entry.tqe_next), 1); (s) = (ns)) { |
| 557 | if (s->pfd == NULL((void*)0)) |
| 558 | continue; |
| 559 | if (s->pfd->revents != 0) |
| 560 | rrdp_data_handler(s); |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | exit(0); |
| 565 | } |