| 1 | /*- |
| 2 | * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD: src/usr.sbin/ppp/defs.c,v 1.31.2.12 2002/09/01 02:12:26 brian Exp $ |
| 27 | * $DragonFly: src/usr.sbin/ppp/defs.c,v 1.4 2005/11/24 23:42:54 swildner Exp $ |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | #include <sys/param.h> |
| 32 | #include <netdb.h> |
| 33 | #include <netinet/in.h> |
| 34 | #include <arpa/inet.h> |
| 35 | #include <sys/socket.h> |
| 36 | |
| 37 | #include <ctype.h> |
| 38 | #include <errno.h> |
| 39 | #include <stdarg.h> |
| 40 | #include <stdio.h> |
| 41 | #include <stdlib.h> |
| 42 | #include <string.h> |
| 43 | #if defined(__DragonFly__) && !defined(NOKLDLOAD) |
| 44 | #include <sys/module.h> |
| 45 | #endif |
| 46 | #include <termios.h> |
| 47 | #if !defined(__DragonFly__) |
| 48 | #include <time.h> |
| 49 | #endif |
| 50 | #include <unistd.h> |
| 51 | |
| 52 | #if defined(__DragonFly__) && !defined(NOKLDLOAD) |
| 53 | #include "id.h" |
| 54 | #include "log.h" |
| 55 | #endif |
| 56 | #include "defs.h" |
| 57 | |
| 58 | #define issep(c) ((c) == '\t' || (c) == ' ') |
| 59 | |
| 60 | #if defined(__NetBSD__) |
| 61 | void |
| 62 | randinit(void) |
| 63 | { |
| 64 | #if defined(__DragonFly__) |
| 65 | static int initdone; /* srandomdev() call is only required once */ |
| 66 | |
| 67 | if (!initdone) { |
| 68 | initdone = 1; |
| 69 | srandomdev(); |
| 70 | } |
| 71 | #else |
| 72 | srandom((time(NULL)^getpid())+random()); |
| 73 | #endif |
| 74 | } |
| 75 | #endif |
| 76 | |
| 77 | ssize_t |
| 78 | fullread(int fd, void *v, size_t n) |
| 79 | { |
| 80 | size_t got, total; |
| 81 | |
| 82 | for (total = 0; total < n; total += got) |
| 83 | switch ((got = read(fd, (char *)v + total, n - total))) { |
| 84 | case 0: |
| 85 | return total; |
| 86 | case -1: |
| 87 | if (errno == EINTR) |
| 88 | got = 0; |
| 89 | else |
| 90 | return -1; |
| 91 | } |
| 92 | return total; |
| 93 | } |
| 94 | |
| 95 | static struct { |
| 96 | int mode; |
| 97 | const char *name; |
| 98 | } modes[] = { |
| 99 | { PHYS_INTERACTIVE, "interactive" }, |
| 100 | { PHYS_AUTO, "auto" }, |
| 101 | { PHYS_DIRECT, "direct" }, |
| 102 | { PHYS_DEDICATED, "dedicated" }, |
| 103 | { PHYS_DDIAL, "ddial" }, |
| 104 | { PHYS_BACKGROUND, "background" }, |
| 105 | { PHYS_FOREGROUND, "foreground" }, |
| 106 | { PHYS_ALL, "*" }, |
| 107 | { 0, 0 } |
| 108 | }; |
| 109 | |
| 110 | const char * |
| 111 | mode2Nam(int mode) |
| 112 | { |
| 113 | int m; |
| 114 | |
| 115 | for (m = 0; modes[m].mode; m++) |
| 116 | if (modes[m].mode == mode) |
| 117 | return modes[m].name; |
| 118 | |
| 119 | return "unknown"; |
| 120 | } |
| 121 | |
| 122 | int |
| 123 | Nam2mode(const char *name) |
| 124 | { |
| 125 | int m, got, len; |
| 126 | |
| 127 | len = strlen(name); |
| 128 | got = -1; |
| 129 | for (m = 0; modes[m].mode; m++) |
| 130 | if (!strncasecmp(name, modes[m].name, len)) { |
| 131 | if (modes[m].name[len] == '\0') |
| 132 | return modes[m].mode; |
| 133 | if (got != -1) |
| 134 | return 0; |
| 135 | got = m; |
| 136 | } |
| 137 | |
| 138 | return got == -1 ? 0 : modes[got].mode; |
| 139 | } |
| 140 | |
| 141 | struct in_addr |
| 142 | GetIpAddr(const char *cp) |
| 143 | { |
| 144 | struct in_addr ipaddr; |
| 145 | |
| 146 | if (!strcasecmp(cp, "default")) |
| 147 | ipaddr.s_addr = INADDR_ANY; |
| 148 | else if (inet_aton(cp, &ipaddr) == 0) { |
| 149 | const char *ptr; |
| 150 | |
| 151 | /* Any illegal characters ? */ |
| 152 | for (ptr = cp; *ptr != '\0'; ptr++) |
| 153 | if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL) |
| 154 | break; |
| 155 | |
| 156 | if (*ptr == '\0') { |
| 157 | struct hostent *hp; |
| 158 | |
| 159 | hp = gethostbyname(cp); |
| 160 | if (hp && hp->h_addrtype == AF_INET) |
| 161 | memcpy(&ipaddr, hp->h_addr, hp->h_length); |
| 162 | else |
| 163 | ipaddr.s_addr = INADDR_NONE; |
| 164 | } else |
| 165 | ipaddr.s_addr = INADDR_NONE; |
| 166 | } |
| 167 | |
| 168 | return ipaddr; |
| 169 | } |
| 170 | |
| 171 | static const struct speeds { |
| 172 | int nspeed; |
| 173 | speed_t speed; |
| 174 | } speeds[] = { |
| 175 | #ifdef B50 |
| 176 | { 50, B50, }, |
| 177 | #endif |
| 178 | #ifdef B75 |
| 179 | { 75, B75, }, |
| 180 | #endif |
| 181 | #ifdef B110 |
| 182 | { 110, B110, }, |
| 183 | #endif |
| 184 | #ifdef B134 |
| 185 | { 134, B134, }, |
| 186 | #endif |
| 187 | #ifdef B150 |
| 188 | { 150, B150, }, |
| 189 | #endif |
| 190 | #ifdef B200 |
| 191 | { 200, B200, }, |
| 192 | #endif |
| 193 | #ifdef B300 |
| 194 | { 300, B300, }, |
| 195 | #endif |
| 196 | #ifdef B600 |
| 197 | { 600, B600, }, |
| 198 | #endif |
| 199 | #ifdef B1200 |
| 200 | { 1200, B1200, }, |
| 201 | #endif |
| 202 | #ifdef B1800 |
| 203 | { 1800, B1800, }, |
| 204 | #endif |
| 205 | #ifdef B2400 |
| 206 | { 2400, B2400, }, |
| 207 | #endif |
| 208 | #ifdef B4800 |
| 209 | { 4800, B4800, }, |
| 210 | #endif |
| 211 | #ifdef B9600 |
| 212 | { 9600, B9600, }, |
| 213 | #endif |
| 214 | #ifdef B19200 |
| 215 | { 19200, B19200, }, |
| 216 | #endif |
| 217 | #ifdef B38400 |
| 218 | { 38400, B38400, }, |
| 219 | #endif |
| 220 | #ifndef _POSIX_SOURCE |
| 221 | #ifdef B7200 |
| 222 | { 7200, B7200, }, |
| 223 | #endif |
| 224 | #ifdef B14400 |
| 225 | { 14400, B14400, }, |
| 226 | #endif |
| 227 | #ifdef B28800 |
| 228 | { 28800, B28800, }, |
| 229 | #endif |
| 230 | #ifdef B57600 |
| 231 | { 57600, B57600, }, |
| 232 | #endif |
| 233 | #ifdef B76800 |
| 234 | { 76800, B76800, }, |
| 235 | #endif |
| 236 | #ifdef B115200 |
| 237 | { 115200, B115200, }, |
| 238 | #endif |
| 239 | #ifdef B230400 |
| 240 | { 230400, B230400, }, |
| 241 | #endif |
| 242 | #ifdef B460800 |
| 243 | { 460800, B460800, }, |
| 244 | #endif |
| 245 | #ifdef B921600 |
| 246 | { 921600, B921600, }, |
| 247 | #endif |
| 248 | #ifdef EXTA |
| 249 | { 19200, EXTA, }, |
| 250 | #endif |
| 251 | #ifdef EXTB |
| 252 | { 38400, EXTB, }, |
| 253 | #endif |
| 254 | #endif /* _POSIX_SOURCE */ |
| 255 | { 0, 0 } |
| 256 | }; |
| 257 | |
| 258 | int |
| 259 | SpeedToInt(speed_t speed) |
| 260 | { |
| 261 | const struct speeds *sp; |
| 262 | |
| 263 | for (sp = speeds; sp->nspeed; sp++) { |
| 264 | if (sp->speed == speed) { |
| 265 | return sp->nspeed; |
| 266 | } |
| 267 | } |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | speed_t |
| 272 | IntToSpeed(int nspeed) |
| 273 | { |
| 274 | const struct speeds *sp; |
| 275 | |
| 276 | for (sp = speeds; sp->nspeed; sp++) { |
| 277 | if (sp->nspeed == nspeed) { |
| 278 | return sp->speed; |
| 279 | } |
| 280 | } |
| 281 | return B0; |
| 282 | } |
| 283 | |
| 284 | char * |
| 285 | findblank(char *p, int flags) |
| 286 | { |
| 287 | int instring; |
| 288 | |
| 289 | instring = 0; |
| 290 | while (*p) { |
| 291 | if (*p == '\\') { |
| 292 | if (flags & PARSE_REDUCE) { |
| 293 | memmove(p, p + 1, strlen(p)); |
| 294 | if (!*p) |
| 295 | break; |
| 296 | } else |
| 297 | p++; |
| 298 | } else if (*p == '"') { |
| 299 | memmove(p, p + 1, strlen(p)); |
| 300 | instring = !instring; |
| 301 | continue; |
| 302 | } else if (!instring && (issep(*p) || |
| 303 | (*p == '#' && !(flags & PARSE_NOHASH)))) |
| 304 | return p; |
| 305 | p++; |
| 306 | } |
| 307 | |
| 308 | return instring ? NULL : p; |
| 309 | } |
| 310 | |
| 311 | int |
| 312 | MakeArgs(char *script, char **pvect, int maxargs, int flags) |
| 313 | { |
| 314 | int nargs; |
| 315 | |
| 316 | nargs = 0; |
| 317 | while (*script) { |
| 318 | script += strspn(script, " \t"); |
| 319 | if (*script == '#' && !(flags & PARSE_NOHASH)) { |
| 320 | *script = '\0'; |
| 321 | break; |
| 322 | } |
| 323 | if (*script) { |
| 324 | if (nargs >= maxargs - 1) |
| 325 | break; |
| 326 | *pvect++ = script; |
| 327 | nargs++; |
| 328 | script = findblank(script, flags); |
| 329 | if (script == NULL) |
| 330 | return -1; |
| 331 | else if (!(flags & PARSE_NOHASH) && *script == '#') |
| 332 | *script = '\0'; |
| 333 | else if (*script) |
| 334 | *script++ = '\0'; |
| 335 | } |
| 336 | } |
| 337 | *pvect = NULL; |
| 338 | return nargs; |
| 339 | } |
| 340 | |
| 341 | const char * |
| 342 | NumStr(long val, char *buf, size_t sz) |
| 343 | { |
| 344 | static char result[23]; /* handles 64 bit numbers */ |
| 345 | |
| 346 | if (buf == NULL || sz == 0) { |
| 347 | buf = result; |
| 348 | sz = sizeof result; |
| 349 | } |
| 350 | snprintf(buf, sz, "<%ld>", val); |
| 351 | return buf; |
| 352 | } |
| 353 | |
| 354 | const char * |
| 355 | HexStr(long val, char *buf, size_t sz) |
| 356 | { |
| 357 | static char result[21]; /* handles 64 bit numbers */ |
| 358 | |
| 359 | if (buf == NULL || sz == 0) { |
| 360 | buf = result; |
| 361 | sz = sizeof result; |
| 362 | } |
| 363 | snprintf(buf, sz, "<0x%lx>", val); |
| 364 | return buf; |
| 365 | } |
| 366 | |
| 367 | const char * |
| 368 | ex_desc(int ex) |
| 369 | { |
| 370 | static char num[12]; /* Used immediately if returned */ |
| 371 | static const char * const desc[] = { |
| 372 | "normal", "start", "sock", "modem", "dial", "dead", "done", |
| 373 | "reboot", "errdead", "hangup", "term", "nodial", "nologin", |
| 374 | "redial", "reconnect" |
| 375 | }; |
| 376 | |
| 377 | if (ex >= 0 && ex < sizeof desc / sizeof *desc) |
| 378 | return desc[ex]; |
| 379 | snprintf(num, sizeof num, "%d", ex); |
| 380 | return num; |
| 381 | } |
| 382 | |
| 383 | void |
| 384 | SetTitle(const char *title) |
| 385 | { |
| 386 | if (title == NULL) |
| 387 | setproctitle(NULL); |
| 388 | else if (title[0] == '-' && title[1] != '\0') |
| 389 | setproctitle("-%s", title + 1); |
| 390 | else |
| 391 | setproctitle("%s", title); |
| 392 | } |
| 393 | |
| 394 | fd_set * |
| 395 | mkfdset(void) |
| 396 | { |
| 397 | return (fd_set *)malloc(howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask)); |
| 398 | } |
| 399 | |
| 400 | void |
| 401 | zerofdset(fd_set *s) |
| 402 | { |
| 403 | memset(s, '\0', howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask)); |
| 404 | } |
| 405 | |
| 406 | void |
| 407 | Concatinate(char *buf, size_t sz, int argc, const char *const *argv) |
| 408 | { |
| 409 | int i, n, pos; |
| 410 | |
| 411 | *buf = '\0'; |
| 412 | for (pos = i = 0; i < argc; i++) { |
| 413 | n = snprintf(buf + pos, sz - pos, "%s%s", i ? " " : "", argv[i]); |
| 414 | if (n < 0) { |
| 415 | buf[pos] = '\0'; |
| 416 | break; |
| 417 | } |
| 418 | if ((pos += n) >= sz) |
| 419 | break; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | int |
| 424 | loadmodules(int how, const char *module, ...) |
| 425 | { |
| 426 | int loaded = 0; |
| 427 | #if defined(__DragonFly__) && !defined(NOKLDLOAD) |
| 428 | va_list ap; |
| 429 | |
| 430 | va_start(ap, module); |
| 431 | while (module != NULL) { |
| 432 | if (modfind(module) == -1) { |
| 433 | if (ID0kldload(module) == -1) { |
| 434 | if (how == LOAD_VERBOSLY) |
| 435 | log_Printf(LogWARN, "%s: Cannot load module\n", module); |
| 436 | } else |
| 437 | loaded++; |
| 438 | } |
| 439 | module = va_arg(ap, const char *); |
| 440 | } |
| 441 | va_end(ap); |
| 442 | #endif |
| 443 | return loaded; |
| 444 | } |