| File: | src/usr.sbin/smtpd/smtpd/../to.c |
| Warning: | line 331, column 8 Although the value stored to 'end' is used in the enclosing expression, the value is never actually read from 'end' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: to.c,v 1.50 2023/05/31 16:51:46 op Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2009 Jacek Masiulaniec <jacekm@dobremiasto.net> |
| 5 | * Copyright (c) 2012 Eric Faurot <eric@openbsd.org> |
| 6 | * Copyright (c) 2012 Gilles Chehade <gilles@poolp.org> |
| 7 | * |
| 8 | * Permission to use, copy, modify, and distribute this software for any |
| 9 | * purpose with or without fee is hereby granted, provided that the above |
| 10 | * copyright notice and this permission notice appear in all copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | */ |
| 20 | |
| 21 | #include <arpa/inet.h> |
| 22 | #include <ctype.h> |
| 23 | #include <errno(*__errno()).h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <time.h> |
| 27 | #if IO_TLS1 |
| 28 | #include <tls.h> |
| 29 | #endif |
| 30 | |
| 31 | #include "smtpd.h" |
| 32 | #include "log.h" |
| 33 | |
| 34 | static int alias_is_filter(struct expandnode *, const char *, size_t); |
| 35 | static int alias_is_username(struct expandnode *, const char *, size_t); |
| 36 | static int alias_is_address(struct expandnode *, const char *, size_t); |
| 37 | static int alias_is_filename(struct expandnode *, const char *, size_t); |
| 38 | static int alias_is_include(struct expandnode *, const char *, size_t); |
| 39 | static int alias_is_error(struct expandnode *, const char *, size_t); |
| 40 | |
| 41 | const char * |
| 42 | sockaddr_to_text(const struct sockaddr *sa) |
| 43 | { |
| 44 | static char buf[NI_MAXHOST256]; |
| 45 | |
| 46 | if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), NULL((void *)0), 0, |
| 47 | NI_NUMERICHOST1)) |
| 48 | return ("(unknown)"); |
| 49 | else |
| 50 | return (buf); |
| 51 | } |
| 52 | |
| 53 | int |
| 54 | text_to_mailaddr(struct mailaddr *maddr, const char *email) |
| 55 | { |
| 56 | char *username; |
| 57 | char *hostname; |
| 58 | char buffer[LINE_MAX2048]; |
| 59 | |
| 60 | if (strlcpy(buffer, email, sizeof buffer) >= sizeof buffer) |
| 61 | return 0; |
| 62 | |
| 63 | memset(maddr, 0, sizeof *maddr); |
| 64 | |
| 65 | username = buffer; |
| 66 | hostname = strrchr(username, '@'); |
| 67 | |
| 68 | if (hostname == NULL((void *)0)) { |
| 69 | if (strlcpy(maddr->user, username, sizeof maddr->user) |
| 70 | >= sizeof maddr->user) |
| 71 | return 0; |
| 72 | } |
| 73 | else if (username == hostname) { |
| 74 | *hostname++ = '\0'; |
| 75 | if (strlcpy(maddr->domain, hostname, sizeof maddr->domain) |
| 76 | >= sizeof maddr->domain) |
| 77 | return 0; |
| 78 | } |
| 79 | else { |
| 80 | *hostname++ = '\0'; |
| 81 | if (strlcpy(maddr->user, username, sizeof maddr->user) |
| 82 | >= sizeof maddr->user) |
| 83 | return 0; |
| 84 | if (strlcpy(maddr->domain, hostname, sizeof maddr->domain) |
| 85 | >= sizeof maddr->domain) |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | return 1; |
| 90 | } |
| 91 | |
| 92 | const char * |
| 93 | mailaddr_to_text(const struct mailaddr *maddr) |
| 94 | { |
| 95 | static char buffer[LINE_MAX2048]; |
| 96 | |
| 97 | (void)strlcpy(buffer, maddr->user, sizeof buffer); |
| 98 | (void)strlcat(buffer, "@", sizeof buffer); |
| 99 | if (strlcat(buffer, maddr->domain, sizeof buffer) >= sizeof buffer) |
| 100 | return NULL((void *)0); |
| 101 | |
| 102 | return buffer; |
| 103 | } |
| 104 | |
| 105 | |
| 106 | const char * |
| 107 | sa_to_text(const struct sockaddr *sa) |
| 108 | { |
| 109 | static char buf[NI_MAXHOST256 + 5]; |
| 110 | char *p; |
| 111 | |
| 112 | buf[0] = '\0'; |
| 113 | p = buf; |
| 114 | |
| 115 | if (sa->sa_family == AF_LOCAL1) |
| 116 | (void)strlcpy(buf, "local", sizeof buf); |
| 117 | else if (sa->sa_family == AF_INET2) { |
| 118 | in_addr_t addr; |
| 119 | |
| 120 | addr = ((const struct sockaddr_in *)sa)->sin_addr.s_addr; |
| 121 | addr = ntohl(addr)(__uint32_t)(__builtin_constant_p(addr) ? (__uint32_t)(((__uint32_t )(addr) & 0xff) << 24 | ((__uint32_t)(addr) & 0xff00 ) << 8 | ((__uint32_t)(addr) & 0xff0000) >> 8 | ((__uint32_t)(addr) & 0xff000000) >> 24) : __swap32md (addr)); |
| 122 | (void)bsnprintf(p, NI_MAXHOST256, "%d.%d.%d.%d", |
| 123 | (addr >> 24) & 0xff, (addr >> 16) & 0xff, |
| 124 | (addr >> 8) & 0xff, addr & 0xff); |
| 125 | } |
| 126 | else if (sa->sa_family == AF_INET624) { |
| 127 | (void)bsnprintf(p, NI_MAXHOST256, "[%s]", sockaddr_to_text(sa)); |
| 128 | } |
| 129 | |
| 130 | return (buf); |
| 131 | } |
| 132 | |
| 133 | const char * |
| 134 | ss_to_text(const struct sockaddr_storage *ss) |
| 135 | { |
| 136 | return (sa_to_text((const struct sockaddr*)ss)); |
| 137 | } |
| 138 | |
| 139 | const char * |
| 140 | time_to_text(time_t when) |
| 141 | { |
| 142 | struct tm *lt; |
| 143 | static char buf[40]; |
| 144 | const char *day[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; |
| 145 | const char *month[] = {"Jan","Feb","Mar","Apr","May","Jun", |
| 146 | "Jul","Aug","Sep","Oct","Nov","Dec"}; |
| 147 | const char *tz; |
| 148 | long offset; |
| 149 | |
| 150 | lt = localtime(&when); |
| 151 | if (lt == NULL((void *)0) || when == 0) |
| 152 | fatalx("time_to_text: localtime"); |
| 153 | |
| 154 | offset = lt->tm_gmtoff; |
| 155 | tz = lt->tm_zone; |
| 156 | |
| 157 | /* We do not use strftime because it is subject to locale substitution*/ |
| 158 | if (!bsnprintf(buf, sizeof(buf), |
| 159 | "%s, %d %s %d %02d:%02d:%02d %c%02d%02d (%s)", |
| 160 | day[lt->tm_wday], lt->tm_mday, month[lt->tm_mon], |
| 161 | lt->tm_year + 1900, |
| 162 | lt->tm_hour, lt->tm_min, lt->tm_sec, |
| 163 | offset >= 0 ? '+' : '-', |
| 164 | abs((int)offset / 3600), |
| 165 | abs((int)offset % 3600) / 60, |
| 166 | tz)) |
| 167 | fatalx("time_to_text: bsnprintf"); |
| 168 | |
| 169 | return buf; |
| 170 | } |
| 171 | |
| 172 | const char * |
| 173 | duration_to_text(time_t t) |
| 174 | { |
| 175 | static char dst[64]; |
| 176 | char buf[64]; |
| 177 | int h, m, s; |
| 178 | long long d; |
| 179 | |
| 180 | if (t == 0) { |
| 181 | (void)strlcpy(dst, "0s", sizeof dst); |
| 182 | return (dst); |
| 183 | } |
| 184 | |
| 185 | dst[0] = '\0'; |
| 186 | if (t < 0) { |
| 187 | (void)strlcpy(dst, "-", sizeof dst); |
| 188 | t = -t; |
| 189 | } |
| 190 | |
| 191 | s = t % 60; |
| 192 | t /= 60; |
| 193 | m = t % 60; |
| 194 | t /= 60; |
| 195 | h = t % 24; |
| 196 | d = t / 24; |
| 197 | |
| 198 | if (d) { |
| 199 | (void)snprintf(buf, sizeof buf, "%lldd", d); |
| 200 | (void)strlcat(dst, buf, sizeof dst); |
| 201 | } |
| 202 | if (h) { |
| 203 | (void)snprintf(buf, sizeof buf, "%dh", h); |
| 204 | (void)strlcat(dst, buf, sizeof dst); |
| 205 | } |
| 206 | if (m) { |
| 207 | (void)snprintf(buf, sizeof buf, "%dm", m); |
| 208 | (void)strlcat(dst, buf, sizeof dst); |
| 209 | } |
| 210 | if (s) { |
| 211 | (void)snprintf(buf, sizeof buf, "%ds", s); |
| 212 | (void)strlcat(dst, buf, sizeof dst); |
| 213 | } |
| 214 | |
| 215 | return (dst); |
| 216 | } |
| 217 | |
| 218 | int |
| 219 | text_to_netaddr(struct netaddr *netaddr, const char *s) |
| 220 | { |
| 221 | struct sockaddr_storage ss; |
| 222 | struct sockaddr_in ssin; |
| 223 | struct sockaddr_in6 ssin6; |
| 224 | int bits; |
| 225 | char buf[NI_MAXHOST256]; |
| 226 | size_t len; |
| 227 | |
| 228 | memset(&ssin, 0, sizeof(struct sockaddr_in)); |
| 229 | memset(&ssin6, 0, sizeof(struct sockaddr_in6)); |
| 230 | |
| 231 | if (strncasecmp("IPv6:", s, 5) == 0) |
| 232 | s += 5; |
| 233 | |
| 234 | bits = inet_net_pton(AF_INET2, s, &ssin.sin_addr, |
| 235 | sizeof(struct in_addr)); |
| 236 | if (bits != -1) { |
| 237 | ssin.sin_family = AF_INET2; |
| 238 | memcpy(&ss, &ssin, sizeof(ssin)); |
| 239 | ss.ss_len = sizeof(struct sockaddr_in); |
| 240 | } else { |
| 241 | if (s[0] != '[') { |
| 242 | if ((len = strlcpy(buf, s, sizeof buf)) >= sizeof buf) |
| 243 | return 0; |
| 244 | } |
| 245 | else { |
| 246 | s++; |
| 247 | if (strncasecmp("IPv6:", s, 5) == 0) |
| 248 | s += 5; |
| 249 | if ((len = strlcpy(buf, s, sizeof buf)) >= sizeof buf) |
| 250 | return 0; |
| 251 | if (buf[len-1] != ']') |
| 252 | return 0; |
| 253 | buf[len-1] = 0; |
| 254 | } |
| 255 | bits = inet_net_pton(AF_INET624, buf, &ssin6.sin6_addr, |
| 256 | sizeof(struct in6_addr)); |
| 257 | if (bits == -1) |
| 258 | return 0; |
| 259 | ssin6.sin6_family = AF_INET624; |
| 260 | memcpy(&ss, &ssin6, sizeof(ssin6)); |
| 261 | ss.ss_len = sizeof(struct sockaddr_in6); |
| 262 | } |
| 263 | |
| 264 | netaddr->ss = ss; |
| 265 | netaddr->bits = bits; |
| 266 | return 1; |
| 267 | } |
| 268 | |
| 269 | int |
| 270 | text_to_relayhost(struct relayhost *relay, const char *s) |
| 271 | { |
| 272 | static const struct schema { |
| 273 | const char *name; |
| 274 | int tls; |
| 275 | uint16_t flags; |
| 276 | uint16_t port; |
| 277 | } schemas [] = { |
| 278 | /* |
| 279 | * new schemas should be *appended* otherwise the default |
| 280 | * schema index needs to be updated later in this function. |
| 281 | */ |
| 282 | { "smtp://", RELAY_TLS_OPPORTUNISTIC0, 0, 25 }, |
| 283 | { "smtp+tls://", RELAY_TLS_STARTTLS1, 0, 25 }, |
| 284 | { "smtp+notls://", RELAY_TLS_NO3, 0, 25 }, |
| 285 | /* need to specify an explicit port for LMTP */ |
| 286 | { "lmtp://", RELAY_TLS_NO3, RELAY_LMTP0x80, 0 }, |
| 287 | { "smtps://", RELAY_TLS_SMTPS2, 0, 465 } |
| 288 | }; |
| 289 | const char *errstr = NULL((void *)0); |
| 290 | char *p, *q; |
| 291 | char buffer[1024]; |
| 292 | char *beg, *end; |
| 293 | size_t i; |
| 294 | size_t len; |
| 295 | |
| 296 | memset(buffer, 0, sizeof buffer); |
| 297 | if (strlcpy(buffer, s, sizeof buffer) >= sizeof buffer) |
| 298 | return 0; |
| 299 | |
| 300 | for (i = 0; i < nitems(schemas)(sizeof((schemas)) / sizeof((schemas)[0])); ++i) |
| 301 | if (strncasecmp(schemas[i].name, s, |
| 302 | strlen(schemas[i].name)) == 0) |
| 303 | break; |
| 304 | |
| 305 | if (i == nitems(schemas)(sizeof((schemas)) / sizeof((schemas)[0]))) { |
| 306 | /* there is a schema, but it's not recognized */ |
| 307 | if (strstr(buffer, "://")) |
| 308 | return 0; |
| 309 | |
| 310 | /* no schema, default to smtp:// */ |
| 311 | i = 0; |
| 312 | p = buffer; |
| 313 | } |
| 314 | else |
| 315 | p = buffer + strlen(schemas[i].name); |
| 316 | |
| 317 | relay->tls = schemas[i].tls; |
| 318 | relay->flags = schemas[i].flags; |
| 319 | relay->port = schemas[i].port; |
| 320 | |
| 321 | /* first, we extract the label if any */ |
| 322 | if ((q = strchr(p, '@')) != NULL((void *)0)) { |
| 323 | *q = 0; |
| 324 | if (strlcpy(relay->authlabel, p, sizeof (relay->authlabel)) |
| 325 | >= sizeof (relay->authlabel)) |
| 326 | return 0; |
| 327 | p = q + 1; |
| 328 | } |
| 329 | |
| 330 | /* then, we extract the mail exchanger */ |
| 331 | beg = end = p; |
Although the value stored to 'end' is used in the enclosing expression, the value is never actually read from 'end' | |
| 332 | if (*beg == '[') { |
| 333 | if ((end = strchr(beg, ']')) == NULL((void *)0)) |
| 334 | return 0; |
| 335 | /* skip ']', it has to be included in the relay hostname */ |
| 336 | ++end; |
| 337 | len = end - beg; |
| 338 | } |
| 339 | else { |
| 340 | for (end = beg; *end; ++end) |
| 341 | if (!isalnum((unsigned char)*end) && |
| 342 | *end != '_' && *end != '.' && *end != '-') |
| 343 | break; |
| 344 | len = end - beg; |
| 345 | } |
| 346 | if (len >= sizeof relay->hostname) |
| 347 | return 0; |
| 348 | for (i = 0; i < len; ++i) |
| 349 | relay->hostname[i] = beg[i]; |
| 350 | relay->hostname[i] = 0; |
| 351 | |
| 352 | /* finally, we extract the port */ |
| 353 | p = beg + len; |
| 354 | if (*p == ':') { |
| 355 | relay->port = strtonum(p+1, 1, IPPORT_HILASTAUTO65535, &errstr); |
| 356 | if (errstr) |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | if (!valid_domainpart(relay->hostname)) |
| 361 | return 0; |
| 362 | if ((relay->flags & RELAY_LMTP0x80) && (relay->port == 0)) |
| 363 | return 0; |
| 364 | if (relay->authlabel[0]) { |
| 365 | /* disallow auth on non-tls scheme. */ |
| 366 | if (relay->tls != RELAY_TLS_STARTTLS1 && |
| 367 | relay->tls != RELAY_TLS_SMTPS2) |
| 368 | return 0; |
| 369 | relay->flags |= RELAY_AUTH0x08; |
| 370 | } |
| 371 | |
| 372 | return 1; |
| 373 | } |
| 374 | |
| 375 | uint64_t |
| 376 | text_to_evpid(const char *s) |
| 377 | { |
| 378 | uint64_t ulval; |
| 379 | char *ep; |
| 380 | |
| 381 | errno(*__errno()) = 0; |
| 382 | ulval = strtoull(s, &ep, 16); |
| 383 | if (s[0] == '\0' || *ep != '\0') |
| 384 | return 0; |
| 385 | if (errno(*__errno()) == ERANGE34 && ulval == ULLONG_MAX0xffffffffffffffffULL) |
| 386 | return 0; |
| 387 | if (ulval == 0) |
| 388 | return 0; |
| 389 | return (ulval); |
| 390 | } |
| 391 | |
| 392 | uint32_t |
| 393 | text_to_msgid(const char *s) |
| 394 | { |
| 395 | uint64_t ulval; |
| 396 | char *ep; |
| 397 | |
| 398 | errno(*__errno()) = 0; |
| 399 | ulval = strtoull(s, &ep, 16); |
| 400 | if (s[0] == '\0' || *ep != '\0') |
| 401 | return 0; |
| 402 | if (errno(*__errno()) == ERANGE34 && ulval == ULLONG_MAX0xffffffffffffffffULL) |
| 403 | return 0; |
| 404 | if (ulval == 0) |
| 405 | return 0; |
| 406 | if (ulval > 0xffffffff) |
| 407 | return 0; |
| 408 | return (ulval & 0xffffffff); |
| 409 | } |
| 410 | |
| 411 | const char * |
| 412 | rule_to_text(struct rule *r) |
| 413 | { |
| 414 | static char buf[4096]; |
| 415 | |
| 416 | memset(buf, 0, sizeof buf); |
| 417 | (void)strlcpy(buf, "match", sizeof buf); |
| 418 | if (r->flag_tag) { |
| 419 | if (r->flag_tag < 0) |
| 420 | (void)strlcat(buf, " !", sizeof buf); |
| 421 | (void)strlcat(buf, " tag ", sizeof buf); |
| 422 | (void)strlcat(buf, r->table_tag, sizeof buf); |
| 423 | } |
| 424 | |
| 425 | if (r->flag_from) { |
| 426 | if (r->flag_from < 0) |
| 427 | (void)strlcat(buf, " !", sizeof buf); |
| 428 | if (r->flag_from_socket) |
| 429 | (void)strlcat(buf, " from socket", sizeof buf); |
| 430 | else if (r->flag_from_rdns) { |
| 431 | (void)strlcat(buf, " from rdns", sizeof buf); |
| 432 | if (r->table_from) { |
| 433 | (void)strlcat(buf, " ", sizeof buf); |
| 434 | (void)strlcat(buf, r->table_from, sizeof buf); |
| 435 | } |
| 436 | } |
| 437 | else if (strcmp(r->table_from, "<anyhost>") == 0) |
| 438 | (void)strlcat(buf, " from any", sizeof buf); |
| 439 | else if (strcmp(r->table_from, "<localhost>") == 0) |
| 440 | (void)strlcat(buf, " from local", sizeof buf); |
| 441 | else { |
| 442 | (void)strlcat(buf, " from src ", sizeof buf); |
| 443 | (void)strlcat(buf, r->table_from, sizeof buf); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | if (r->flag_for) { |
| 448 | if (r->flag_for < 0) |
| 449 | (void)strlcat(buf, " !", sizeof buf); |
| 450 | if (strcmp(r->table_for, "<anydestination>") == 0) |
| 451 | (void)strlcat(buf, " for any", sizeof buf); |
| 452 | else if (strcmp(r->table_for, "<localnames>") == 0) |
| 453 | (void)strlcat(buf, " for local", sizeof buf); |
| 454 | else { |
| 455 | (void)strlcat(buf, " for domain ", sizeof buf); |
| 456 | (void)strlcat(buf, r->table_for, sizeof buf); |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | if (r->flag_smtp_helo) { |
| 461 | if (r->flag_smtp_helo < 0) |
| 462 | (void)strlcat(buf, " !", sizeof buf); |
| 463 | (void)strlcat(buf, " helo ", sizeof buf); |
| 464 | (void)strlcat(buf, r->table_smtp_helo, sizeof buf); |
| 465 | } |
| 466 | |
| 467 | if (r->flag_smtp_auth) { |
| 468 | if (r->flag_smtp_auth < 0) |
| 469 | (void)strlcat(buf, " !", sizeof buf); |
| 470 | (void)strlcat(buf, " auth", sizeof buf); |
| 471 | if (r->table_smtp_auth) { |
| 472 | (void)strlcat(buf, " ", sizeof buf); |
| 473 | (void)strlcat(buf, r->table_smtp_auth, sizeof buf); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | if (r->flag_smtp_starttls) { |
| 478 | if (r->flag_smtp_starttls < 0) |
| 479 | (void)strlcat(buf, " !", sizeof buf); |
| 480 | (void)strlcat(buf, " tls", sizeof buf); |
| 481 | } |
| 482 | |
| 483 | if (r->flag_smtp_mail_from) { |
| 484 | if (r->flag_smtp_mail_from < 0) |
| 485 | (void)strlcat(buf, " !", sizeof buf); |
| 486 | (void)strlcat(buf, " mail-from ", sizeof buf); |
| 487 | (void)strlcat(buf, r->table_smtp_mail_from, sizeof buf); |
| 488 | } |
| 489 | |
| 490 | if (r->flag_smtp_rcpt_to) { |
| 491 | if (r->flag_smtp_rcpt_to < 0) |
| 492 | (void)strlcat(buf, " !", sizeof buf); |
| 493 | (void)strlcat(buf, " rcpt-to ", sizeof buf); |
| 494 | (void)strlcat(buf, r->table_smtp_rcpt_to, sizeof buf); |
| 495 | } |
| 496 | (void)strlcat(buf, " action ", sizeof buf); |
| 497 | if (r->reject) |
| 498 | (void)strlcat(buf, "reject", sizeof buf); |
| 499 | else |
| 500 | (void)strlcat(buf, r->dispatcher, sizeof buf); |
| 501 | return buf; |
| 502 | } |
| 503 | |
| 504 | |
| 505 | int |
| 506 | text_to_userinfo(struct userinfo *userinfo, const char *s) |
| 507 | { |
| 508 | char buf[PATH_MAX1024]; |
| 509 | char *p; |
| 510 | const char *errstr; |
| 511 | |
| 512 | memset(buf, 0, sizeof buf); |
| 513 | p = buf; |
| 514 | while (*s && *s != ':') |
| 515 | *p++ = *s++; |
| 516 | if (*s++ != ':') |
| 517 | goto error; |
| 518 | |
| 519 | if (strlcpy(userinfo->username, buf, |
| 520 | sizeof userinfo->username) >= sizeof userinfo->username) |
| 521 | goto error; |
| 522 | |
| 523 | memset(buf, 0, sizeof buf); |
| 524 | p = buf; |
| 525 | while (*s && *s != ':') |
| 526 | *p++ = *s++; |
| 527 | if (*s++ != ':') |
| 528 | goto error; |
| 529 | userinfo->uid = strtonum(buf, 0, UID_MAX0xffffffffU, &errstr); |
| 530 | if (errstr) |
| 531 | goto error; |
| 532 | |
| 533 | memset(buf, 0, sizeof buf); |
| 534 | p = buf; |
| 535 | while (*s && *s != ':') |
| 536 | *p++ = *s++; |
| 537 | if (*s++ != ':') |
| 538 | goto error; |
| 539 | userinfo->gid = strtonum(buf, 0, GID_MAX0xffffffffU, &errstr); |
| 540 | if (errstr) |
| 541 | goto error; |
| 542 | |
| 543 | if (strlcpy(userinfo->directory, s, |
| 544 | sizeof userinfo->directory) >= sizeof userinfo->directory) |
| 545 | goto error; |
| 546 | |
| 547 | return 1; |
| 548 | |
| 549 | error: |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | int |
| 554 | text_to_credentials(struct credentials *creds, const char *s) |
| 555 | { |
| 556 | char *p; |
| 557 | char buffer[LINE_MAX2048]; |
| 558 | size_t offset; |
| 559 | |
| 560 | p = strchr(s, ':'); |
| 561 | if (p == NULL((void *)0)) { |
| 562 | creds->username[0] = '\0'; |
| 563 | if (strlcpy(creds->password, s, sizeof creds->password) |
| 564 | >= sizeof creds->password) |
| 565 | return 0; |
| 566 | return 1; |
| 567 | } |
| 568 | |
| 569 | offset = p - s; |
| 570 | |
| 571 | memset(buffer, 0, sizeof buffer); |
| 572 | if (strlcpy(buffer, s, sizeof buffer) >= sizeof buffer) |
| 573 | return 0; |
| 574 | p = buffer + offset; |
| 575 | *p = '\0'; |
| 576 | |
| 577 | if (strlcpy(creds->username, buffer, sizeof creds->username) |
| 578 | >= sizeof creds->username) |
| 579 | return 0; |
| 580 | if (strlcpy(creds->password, p+1, sizeof creds->password) |
| 581 | >= sizeof creds->password) |
| 582 | return 0; |
| 583 | |
| 584 | return 1; |
| 585 | } |
| 586 | |
| 587 | int |
| 588 | text_to_expandnode(struct expandnode *expandnode, const char *s) |
| 589 | { |
| 590 | size_t l; |
| 591 | |
| 592 | l = strlen(s); |
| 593 | if (alias_is_error(expandnode, s, l) || |
| 594 | alias_is_include(expandnode, s, l) || |
| 595 | alias_is_filter(expandnode, s, l) || |
| 596 | alias_is_filename(expandnode, s, l) || |
| 597 | alias_is_address(expandnode, s, l) || |
| 598 | alias_is_username(expandnode, s, l)) |
| 599 | return (1); |
| 600 | |
| 601 | return (0); |
| 602 | } |
| 603 | |
| 604 | const char * |
| 605 | expandnode_to_text(struct expandnode *expandnode) |
| 606 | { |
| 607 | switch (expandnode->type) { |
| 608 | case EXPAND_FILTER: |
| 609 | case EXPAND_FILENAME: |
| 610 | case EXPAND_INCLUDE: |
| 611 | case EXPAND_ERROR: |
| 612 | case EXPAND_USERNAME: |
| 613 | return expandnode->u.user; |
| 614 | case EXPAND_ADDRESS: |
| 615 | return mailaddr_to_text(&expandnode->u.mailaddr); |
| 616 | case EXPAND_INVALID: |
| 617 | break; |
| 618 | } |
| 619 | |
| 620 | return NULL((void *)0); |
| 621 | } |
| 622 | |
| 623 | /******/ |
| 624 | static int |
| 625 | alias_is_filter(struct expandnode *alias, const char *line, size_t len) |
| 626 | { |
| 627 | int v = 0; |
| 628 | |
| 629 | if (*line == '"') |
| 630 | v = 1; |
| 631 | if (*(line+v) == '|') { |
| 632 | if (strlcpy(alias->u.buffer, line + v + 1, |
| 633 | sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
| 634 | return 0; |
| 635 | if (v) { |
| 636 | v = strlen(alias->u.buffer); |
| 637 | if (v == 0) |
| 638 | return (0); |
| 639 | if (alias->u.buffer[v-1] != '"') |
| 640 | return (0); |
| 641 | alias->u.buffer[v-1] = '\0'; |
| 642 | } |
| 643 | alias->type = EXPAND_FILTER; |
| 644 | return (1); |
| 645 | } |
| 646 | return (0); |
| 647 | } |
| 648 | |
| 649 | static int |
| 650 | alias_is_username(struct expandnode *alias, const char *line, size_t len) |
| 651 | { |
| 652 | memset(alias, 0, sizeof *alias); |
| 653 | |
| 654 | if (strlcpy(alias->u.user, line, |
| 655 | sizeof(alias->u.user)) >= sizeof(alias->u.user)) |
| 656 | return 0; |
| 657 | |
| 658 | while (*line) { |
| 659 | if (!isalnum((unsigned char)*line) && |
| 660 | *line != '_' && *line != '.' && *line != '-' && *line != '+') |
| 661 | return 0; |
| 662 | ++line; |
| 663 | } |
| 664 | |
| 665 | alias->type = EXPAND_USERNAME; |
| 666 | return 1; |
| 667 | } |
| 668 | |
| 669 | static int |
| 670 | alias_is_address(struct expandnode *alias, const char *line, size_t len) |
| 671 | { |
| 672 | char *domain; |
| 673 | |
| 674 | memset(alias, 0, sizeof *alias); |
| 675 | |
| 676 | if (len < 3) /* x@y */ |
| 677 | return 0; |
| 678 | |
| 679 | domain = strchr(line, '@'); |
| 680 | if (domain == NULL((void *)0)) |
| 681 | return 0; |
| 682 | |
| 683 | /* @ cannot start or end an address */ |
| 684 | if (domain == line || domain == line + len - 1) |
| 685 | return 0; |
| 686 | |
| 687 | /* scan pre @ for disallowed chars */ |
| 688 | *domain++ = '\0'; |
| 689 | (void)strlcpy(alias->u.mailaddr.user, line, sizeof(alias->u.mailaddr.user)); |
| 690 | (void)strlcpy(alias->u.mailaddr.domain, domain, |
| 691 | sizeof(alias->u.mailaddr.domain)); |
| 692 | |
| 693 | while (*line) { |
| 694 | char allowedset[] = "!#$%*/?|^{}`~&'+-=_."; |
| 695 | if (!isalnum((unsigned char)*line) && |
| 696 | strchr(allowedset, *line) == NULL((void *)0)) |
| 697 | return 0; |
| 698 | ++line; |
| 699 | } |
| 700 | |
| 701 | while (*domain) { |
| 702 | char allowedset[] = "-."; |
| 703 | if (!isalnum((unsigned char)*domain) && |
| 704 | strchr(allowedset, *domain) == NULL((void *)0)) |
| 705 | return 0; |
| 706 | ++domain; |
| 707 | } |
| 708 | |
| 709 | alias->type = EXPAND_ADDRESS; |
| 710 | return 1; |
| 711 | } |
| 712 | |
| 713 | static int |
| 714 | alias_is_filename(struct expandnode *alias, const char *line, size_t len) |
| 715 | { |
| 716 | memset(alias, 0, sizeof *alias); |
| 717 | |
| 718 | if (*line != '/') |
| 719 | return 0; |
| 720 | |
| 721 | if (strlcpy(alias->u.buffer, line, |
| 722 | sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
| 723 | return 0; |
| 724 | alias->type = EXPAND_FILENAME; |
| 725 | return 1; |
| 726 | } |
| 727 | |
| 728 | static int |
| 729 | alias_is_include(struct expandnode *alias, const char *line, size_t len) |
| 730 | { |
| 731 | size_t skip; |
| 732 | |
| 733 | memset(alias, 0, sizeof *alias); |
| 734 | |
| 735 | if (strncasecmp(":include:", line, 9) == 0) |
| 736 | skip = 9; |
| 737 | else if (strncasecmp("include:", line, 8) == 0) |
| 738 | skip = 8; |
| 739 | else |
| 740 | return 0; |
| 741 | |
| 742 | if (!alias_is_filename(alias, line + skip, len - skip)) |
| 743 | return 0; |
| 744 | |
| 745 | alias->type = EXPAND_INCLUDE; |
| 746 | return 1; |
| 747 | } |
| 748 | |
| 749 | static int |
| 750 | alias_is_error(struct expandnode *alias, const char *line, size_t len) |
| 751 | { |
| 752 | size_t skip; |
| 753 | |
| 754 | memset(alias, 0, sizeof *alias); |
| 755 | |
| 756 | if (strncasecmp(":error:", line, 7) == 0) |
| 757 | skip = 7; |
| 758 | else if (strncasecmp("error:", line, 6) == 0) |
| 759 | skip = 6; |
| 760 | else |
| 761 | return 0; |
| 762 | |
| 763 | if (strlcpy(alias->u.buffer, line + skip, |
| 764 | sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
| 765 | return 0; |
| 766 | |
| 767 | if (strlen(alias->u.buffer) < 5) |
| 768 | return 0; |
| 769 | |
| 770 | /* [45][0-9]{2} [a-zA-Z0-9].* */ |
| 771 | if (alias->u.buffer[3] != ' ' || |
| 772 | !isalnum((unsigned char)alias->u.buffer[4]) || |
| 773 | (alias->u.buffer[0] != '4' && alias->u.buffer[0] != '5') || |
| 774 | !isdigit((unsigned char)alias->u.buffer[1]) || |
| 775 | !isdigit((unsigned char)alias->u.buffer[2])) |
| 776 | return 0; |
| 777 | |
| 778 | alias->type = EXPAND_ERROR; |
| 779 | return 1; |
| 780 | } |
| 781 | |
| 782 | #if IO_TLS1 |
| 783 | const char * |
| 784 | tls_to_text(struct tls *tls) |
| 785 | { |
| 786 | static char buf[256]; |
| 787 | |
| 788 | (void)snprintf(buf, sizeof buf, "%s:%s:%d", |
| 789 | tls_conn_version(tls), |
| 790 | tls_conn_cipher(tls), |
| 791 | tls_conn_cipher_strength(tls)); |
| 792 | |
| 793 | return (buf); |
| 794 | } |
| 795 | #endif |