release/src/router/httpd/misc.c

   1 /*
   2
   3         Tomato Firmware
   4         Copyright (C) 2006-2009 Jonathan Zarate
   5
   6 */
   7
   8 #include "tomato.h"
   9
  10 #include <ctype.h>
  11 #include <sys/sysinfo.h>
  12 #include <sys/stat.h>
  13 #include <sys/ioctl.h>
  14 #include <net/if.h>
  15 #include <fcntl.h>
  16 #include <sys/socket.h>
  17 #include <netinet/in.h>
  18 #include <arpa/inet.h>
  19 #include <sys/types.h>
  20 #include <dirent.h>
  21 #include <time.h>
  22 #include <sys/statfs.h>
  23 #include <netdb.h>
  24 #include <net/route.h>
  25
  26 #ifdef TCONFIG_IPV6
  27 #include <ifaddrs.h>
  28 #endif
  29
  30 #include <wlioctl.h>
  31 #include <wlutils.h>
  32
  33 // to javascript-safe string
  34 char *js_string(const char *s)
  35 {
  36         unsigned char c;
  37         char *buffer;
  38         char *b;
  39
  40         if ((buffer = malloc((strlen(s) * 4) + 1)) != NULL) {
  41                 b = buffer;
  42                 while ((c = *s++) != 0) {
  43                         if ((c == '"') || (c == '\'') || (c == '\\') || (!isprint(c))) {
  44                                 b += sprintf(b, "\\x%02x", c);
  45                         }
  46                         else {
  47                                 *b++ = c;
  48                         }
  49                 }
  50                 *b = 0;
  51         }
  52         return buffer;
  53 }
  54
  55 // to html-safe string
  56 char *html_string(const char *s)
  57 {
  58         unsigned char c;
  59         char *buffer;
  60         char *b;
  61
  62         if ((buffer = malloc((strlen(s) * 6) + 1)) != NULL) {
  63                 b = buffer;
  64                 while ((c = *s++) != 0) {
  65                         if ((c == '&') || (c == '<') || (c == '>') || (c == '"') || (c == '\'') || (!isprint(c))) {
  66                                 b += sprintf(b, "&#%d;", c);
  67                         }
  68                         else {
  69                                 *b++ = c;
  70                         }
  71                 }
  72                 *b = 0;
  73         }
  74         return buffer;
  75 }
  76
  77 // removes \r
  78 char *unix_string(const char *s)
  79 {
  80         char *buffer;
  81         char *b;
  82         char c;
  83
  84         if ((buffer = malloc(strlen(s) + 1)) != NULL) {
  85                 b = buffer;
  86                 while ((c = *s++) != 0)
  87                         if (c != '\r') *b++ = c;
  88                 *b = 0;
  89         }
  90         return buffer;
  91 }
  92
  93 // # days, ##:##:##
  94 char *reltime(char *buf, time_t t)
  95 {
  96         int days;
  97         int m;
  98
  99         if (t < 0) t = 0;
 100         days = t / 86400;
 101         m = t / 60;
 102         sprintf(buf, "%d day%s, %02d:%02d:%02d", days, ((days==1) ? "" : "s"), ((m / 60) % 24), (m % 60), (int)(t % 60));
 103         return buf;
 104 }
 105
 106 int get_client_info(char *mac, char *ifname)
 107 {
 108         FILE *f;
 109         char s[256];
 110 #ifdef TCONFIG_IPV6
 111         char ip[INET6_ADDRSTRLEN];
 112 #else
 113         char ip[INET_ADDRSTRLEN];
 114 #endif
 115
 116 /*
 117 # ip neigh show fe80:0:0::201:02ff:fe03:0405
 118 fe80::201:2ff:fe3:405 dev br0 lladdr 00:01:02:03:04:05 REACHABLE
 119 */
 120         if (clientsai.ss_family == AF_INET) {
 121                 inet_ntop(clientsai.ss_family, &(((struct sockaddr_in*)&clientsai)->sin_addr), ip, sizeof(ip));
 122                 sprintf(s, "ip neigh show %s", ip);
 123         }
 124 #ifdef TCONFIG_IPV6
 125         else if (clientsai.ss_family == AF_INET6) {
 126                 inet_ntop(clientsai.ss_family, &(((struct sockaddr_in6*)&clientsai)->sin6_addr), ip, sizeof(ip));
 127                 if (IN6_IS_ADDR_V4MAPPED( &(((struct sockaddr_in6*)&clientsai)->sin6_addr) ))
 128                         sprintf(s, "ip neigh show %s", ip + 7); // chop off the ::ffff: to get the ipv4 bit
 129                 else
 130                         sprintf(s, "ip neigh show %s", ip);
 131         }
 132 #endif
 133
 134         if ((f = popen(s, "r")) != NULL) {
 135                 while (fgets(s, sizeof(s), f)) {
 136                         if (sscanf(s, "%*s dev %16s lladdr %17s %*s", ifname, mac) == 2) {
 137                                 pclose(f);
 138                                 return 1;
 139                         }
 140                 }
 141                 pclose(f);
 142         }
 143         return 0;
 144 }
 145
 146
 147 //      <% lanip(mode); %>
 148 //      <mode>
 149 //              1               return first 3 octets (192.168.1)
 150 //              2               return last octet (1)
 151 //              else    return full (192.168.1.1)
 152
 153 void asp_lanip(int argc, char **argv)
 154 {
 155         char *nv, *p;
 156         char s[64];
 157         char mode;
 158
 159         mode = argc ? *argv[0] : 0;
 160
 161         if ((nv = nvram_get("lan_ipaddr")) != NULL) {
 162                 strcpy(s, nv);
 163                 if ((p = strrchr(s, '.')) != NULL) {
 164                         *p = 0;
 165                         web_puts((mode == '1') ? s : (mode == '2') ? (p + 1) : nv);
 166                 }
 167         }
 168 }
 169
 170 void asp_lipp(int argc, char **argv)
 171 {
 172         char *one = "1";
 173         asp_lanip(1, &one);
 174 }
 175
 176 //      <% psup(process); %>
 177 //      returns 1 if process is running
 178
 179 void asp_psup(int argc, char **argv)
 180 {
 181         if (argc == 1) web_printf("%d", pidof(argv[0]) > 0);
 182 }
 183
 184 void wo_vpn_status(char *url)
 185 {
 186 #ifdef TCONFIG_OPENVPN
 187         char buf[256];
 188         char *type;
 189         char *str;
 190         int num;
 191         FILE *fp;
 192
 193         type = 0;
 194         if ( (str = webcgi_get("server")) )
 195                 type = "server";
 196         else if ( (str = webcgi_get("client")) )
 197                 type = "client";
 198
 199         num = str? atoi(str): 0;
 200         if ( type && num > 0 )
 201         {
 202                 // Trigger OpenVPN to update the status file
 203                 snprintf(&buf[0], sizeof(buf), "vpn%s%d", type, num);
 204                 killall(&buf[0], SIGUSR2);
 205
 206                 // Give it a chance to update the file
 207                 sleep(1);
 208
 209                 // Read the status file and repeat it verbatim to the caller
 210                 snprintf(&buf[0], sizeof(buf), "/etc/openvpn/%s%d/status", type, num);
 211                 fp = fopen(&buf[0], "r");
 212                 if( fp != NULL )
 213                 {
 214                         while (fgets(&buf[0], sizeof(buf), fp) != NULL)
 215                                 web_puts(&buf[0]);
 216                         fclose(fp);
 217                 }
 218         }
 219 #endif
 220 }
 221
 222 /*
 223 # cat /proc/meminfo
 224         total:    used:    free:  shared: buffers:  cached:
 225 Mem:  14872576 12877824  1994752        0  1236992  4837376
 226 Swap:        0        0        0
 227 MemTotal:        14524 kB
 228 MemFree:          1948 kB
 229 MemShared:           0 kB
 230 Buffers:          1208 kB
 231 Cached:           4724 kB
 232 SwapCached:          0 kB
 233 Active:           4364 kB
 234 Inactive:         2952 kB
 235 HighTotal:           0 kB
 236 HighFree:            0 kB
 237 LowTotal:        14524 kB
 238 LowFree:          1948 kB
 239 SwapTotal:           0 kB
 240 SwapFree:            0 kB
 241
 242 */
 243
 244 typedef struct {
 245         unsigned long total;
 246         unsigned long free;
 247         unsigned long shared;
 248         unsigned long buffers;
 249         unsigned long cached;
 250         unsigned long swaptotal;
 251         unsigned long swapfree;
 252         unsigned long maxfreeram;
 253 } meminfo_t;
 254
 255 static int get_memory(meminfo_t *m)
 256 {
 257         FILE *f;
 258         char s[128];
 259         int ok = 0;
 260
 261         memset(m, 0, sizeof(*m));
 262         if ((f = fopen("/proc/meminfo", "r")) != NULL) {
 263                 while (fgets(s, sizeof(s), f)) {
 264 #ifdef LINUX26
 265                         if (strncmp(s, "MemTotal:", 9) == 0) {
 266                                 m->total = strtoul(s + 12, NULL, 10) * 1024;
 267                                 ++ok;
 268                         }
 269                         else if (strncmp(s, "MemFree:", 8) == 0) {
 270                                 m->free = strtoul(s + 12, NULL, 10) * 1024;
 271                                 ++ok;
 272                         }
 273                         else if (strncmp(s, "Buffers:", 8) == 0) {
 274                                 m->buffers = strtoul(s + 12, NULL, 10) * 1024;
 275                                 ++ok;
 276                         }
 277                         else if (strncmp(s, "Cached:", 7) == 0) {
 278                                 m->cached = strtoul(s + 12, NULL, 10) * 1024;
 279                                 ++ok;
 280                         }
 281 #else
 282                         if (strncmp(s, "Mem:", 4) == 0) {
 283                                 if (sscanf(s + 6, "%ld %*d %ld %ld %ld %ld", &m->total, &m->free, &m->shared, &m->buffers, &m->cached) == 5)
 284                                         ++ok;
 285                         }
 286 #endif
 287                         else if (strncmp(s, "SwapTotal:", 10) == 0) {
 288                                 m->swaptotal = strtoul(s + 12, NULL, 10) * 1024;
 289                                 ++ok;
 290                         }
 291                         else if (strncmp(s, "SwapFree:", 9) == 0) {
 292                                 m->swapfree = strtoul(s + 11, NULL, 10) * 1024;
 293                                 ++ok;
 294 #ifndef LINUX26
 295                                 break;
 296 #endif
 297                         }
 298                 }
 299                 fclose(f);
 300         }
 301         if (ok == 0) {
 302                 return 0;
 303         }
 304         m->maxfreeram = m->free;
 305         if (nvram_match("t_cafree", "1")) m->maxfreeram += (m->cached + m->buffers);
 306         return 1;
 307 }
 308
 309 #ifdef TCONFIG_IPV6
 310 #define IP6ADDR_MAX_CNT 3       // wan, lan, lan-ll
 311 static void print_ipv6_addrs(void)
 312 {
 313         char buf[INET6_ADDRSTRLEN];
 314         int found;
 315         char *addrtype;
 316         struct ifaddrs *ifap, *ifa;
 317         struct sockaddr_in6 *s6;
 318
 319         if (!ipv6_enabled() || (getifaddrs(&ifap) != 0))
 320                 return;
 321
 322         found = 0;
 323         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
 324                 if ((ifa->ifa_addr == NULL) || (ifa->ifa_addr->sa_family != AF_INET6))
 325                         continue;
 326
 327                 s6 = (struct sockaddr_in6 *)(ifa->ifa_addr);
 328
 329                 if (strncmp(ifa->ifa_name, nvram_safe_get("lan_ifname"), IFNAMSIZ) == 0) {
 330                         if (IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr))
 331                                 addrtype = "lan_ll";
 332                         else
 333                                 addrtype = "lan";
 334                 }
 335                 else if (strncmp(ifa->ifa_name, get_wan6face(), IFNAMSIZ) == 0) {
 336                         if (!IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr))
 337                                 addrtype = "wan";
 338                         else
 339                                 continue;
 340                 }
 341                 else
 342                         continue;
 343
 344                 if (inet_ntop(ifa->ifa_addr->sa_family, &(s6->sin6_addr), buf, sizeof(buf)) != NULL) {
 345                         web_printf("\tip6_%s: '%s',\n",
 346                                 addrtype, buf);
 347                         if (++found >= IP6ADDR_MAX_CNT)
 348                                 break;
 349                 }
 350         }
 351
 352         freeifaddrs(ifap);
 353 }
 354 #endif
 355
 356
 357 int get_flashsize()
 358 {
 359 /*
 360 # cat /proc/mtd
 361 dev:    size   erasesize  name
 362 mtd0: 00020000 00010000 "pmon"
 363 mtd1: 007d0000 00010000 "linux"
 364 */
 365         FILE *f;
 366         char s[512];
 367         unsigned int size;
 368         char partname[16];
 369         int found = 0;
 370
 371         if ((f = fopen("/proc/mtd", "r")) != NULL) {
 372         while (fgets(s, sizeof(s), f)) {
 373                 if (sscanf(s, "%*s %X %*s %16s", &size, partname) != 2) continue;
 374                         if (strcmp(partname, "\"linux\"") == 0) {
 375                                 found = 1;
 376                                 break;
 377                         }
 378                 }
 379                 fclose(f);
 380         }
 381         if (found) {
 382                      if ((size > 0x2000000) && (size < 0x4000000)) return 64;
 383                 else if ((size > 0x1000000) && (size < 0x2000000)) return 32;
 384                 else if ((size > 0x800000) && (size < 0x1000000)) return 16;
 385                 else if ((size > 0x400000) && (size < 0x800000)) return 8;
 386                 else if ((size > 0x200000) && (size < 0x400000)) return 4;
 387                 else if ((size > 0x100000) && (size < 0x200000)) return 2;
 388                 else return 1;
 389         }
 390         else {
 391                 return 0;
 392         }
 393 }
 394
 395
 396 void asp_sysinfo(int argc, char **argv)
 397 {
 398         struct sysinfo si;
 399         char s[64];
 400         meminfo_t mem;
 401         char system_type[64];
 402         char cpu_model[64];
 403         char bogomips[8];
 404         char cpuclk[8];
 405
 406         get_cpuinfo(system_type, cpu_model, bogomips, cpuclk);
 407
 408         web_puts("\nsysinfo = {\n");
 409
 410 #ifdef TCONFIG_IPV6
 411         print_ipv6_addrs();
 412 #endif
 413         sysinfo(&si);
 414         get_memory(&mem);
 415         web_printf(
 416                 "\tuptime: %ld,\n"
 417                 "\tuptime_s: '%s',\n"
 418                 "\tloads: [%ld, %ld, %ld],\n"
 419                 "\ttotalram: %ld,\n"
 420                 "\tfreeram: %ld,\n"
 421                 "\tshareram: %ld,\n"
 422                 "\tbufferram: %ld,\n"
 423                 "\tcached: %ld,\n"
 424                 "\ttotalswap: %ld,\n"
 425                 "\tfreeswap: %ld,\n"
 426                 "\ttotalfreeram: %ld,\n"
 427                 "\tprocs: %d,\n"
 428                 "\tflashsize: %d,\n"
 429                 "\tsystemtype: '%s',\n"
 430                 "\tcpumodel: '%s',\n"
 431                 "\tbogomips: '%s',\n"
 432                 "\tcpuclk: '%s'\n",
 433                         si.uptime,
 434                         reltime(s, si.uptime),
 435                         si.loads[0], si.loads[1], si.loads[2],
 436                         mem.total, mem.free,
 437                         mem.shared, mem.buffers, mem.cached,
 438                         mem.swaptotal, mem.swapfree,
 439                         mem.maxfreeram,
 440                         si.procs,
 441                         get_flashsize(),
 442                         system_type,
 443                         cpu_model,
 444                         bogomips,
 445                         cpuclk);
 446         web_puts("};\n");
 447 }
 448
 449 void asp_activeroutes(int argc, char **argv)
 450 {
 451         FILE *f;
 452         char s[512];
 453         char dev[17];
 454         unsigned long dest;
 455         unsigned long gateway;
 456         unsigned long flags;
 457         unsigned long mask;
 458         unsigned metric;
 459         struct in_addr ia;
 460         char s_dest[16];
 461         char s_gateway[16];
 462         char s_mask[16];
 463         int n;
 464
 465         web_puts("\nactiveroutes = [");
 466         n = 0;
 467         if ((f = fopen("/proc/net/route", "r")) != NULL) {
 468                 while (fgets(s, sizeof(s), f)) {
 469                         if (sscanf(s, "%16s%lx%lx%lx%*s%*s%u%lx", dev, &dest, &gateway, &flags, &metric, &mask) != 6) continue;
 470                         if ((flags & RTF_UP) == 0) continue;
 471                         if (dest != 0) {
 472                                 ia.s_addr = dest;
 473                                 strcpy(s_dest, inet_ntoa(ia));
 474                         }
 475                         else {
 476                                 strcpy(s_dest, "default");
 477                         }
 478                         if (gateway != 0) {
 479                                 ia.s_addr = gateway;
 480                                 strcpy(s_gateway, inet_ntoa(ia));
 481                         }
 482                         else {
 483                                 strcpy(s_gateway, "*");
 484                         }
 485                         ia.s_addr = mask;
 486                         strcpy(s_mask, inet_ntoa(ia));
 487                         web_printf("%s['%s','%s','%s','%s',%u]", n ? "," : "", dev, s_dest, s_gateway, s_mask, metric);
 488                         ++n;
 489                 }
 490                 fclose(f);
 491         }
 492
 493 #ifdef TCONFIG_IPV6
 494         int pxlen;
 495         char addr6x[80];
 496         struct sockaddr_in6 snaddr6;
 497         char addr6[40], nhop6[40];
 498
 499         if ((ipv6_enabled()) &&
 500             (f = fopen("/proc/net/ipv6_route", "r")) != NULL) {
 501                 while (fgets(s, sizeof(s), f)) {
 502                         if (sscanf(s, "%32s%x%*s%*s%32s%x%*s%*s%lx%s\n",
 503                                 addr6x+14, &pxlen, addr6x+40+7, &metric, &flags, dev) != 6) continue;
 504
 505                         if ((flags & RTF_UP) == 0) continue;
 506
 507                         int i = 0;
 508                         char *p = addr6x+14;
 509                         do {
 510                                 if (!*p) {
 511                                         if (i == 40) { // nul terminator for 1st address?
 512                                                 addr6x[39] = 0; // Fixup... need 0 instead of ':'.
 513                                                 ++p;    // Skip and continue.
 514                                                 continue;
 515                                         }
 516                                         goto OUT;
 517                                 }
 518                                 addr6x[i++] = *p++;
 519                                 if (!((i+1) % 5)) {
 520                                         addr6x[i++] = ':';
 521                                 }
 522                         } while (i < 40+28+7);
 523
 524                         inet_pton(AF_INET6, addr6x, (struct sockaddr *) &snaddr6.sin6_addr);
 525                         if (IN6_IS_ADDR_UNSPECIFIED(&snaddr6.sin6_addr))
 526                                 strcpy(addr6, "default");
 527                         else
 528                                 inet_ntop(AF_INET6, &snaddr6.sin6_addr, addr6, sizeof(addr6));
 529
 530                         inet_pton(AF_INET6, addr6x + 40, (struct sockaddr *) &snaddr6.sin6_addr);
 531                         if (IN6_IS_ADDR_UNSPECIFIED(&snaddr6.sin6_addr))
 532                                 strcpy(nhop6, "*");
 533                         else
 534                                 inet_ntop(AF_INET6, &snaddr6.sin6_addr, nhop6, sizeof(nhop6));
 535
 536                         web_printf("%s['%s','%s','%s','%d',%u]", n ? "," : "", dev, addr6, nhop6, pxlen, metric);
 537                         ++n;
 538                 }
 539 OUT:
 540                 fclose(f);
 541         }
 542 #endif
 543
 544         web_puts("];\n");
 545 }
 546
 547 void asp_cgi_get(int argc, char **argv)
 548 {
 549         const char *v;
 550         int i;
 551
 552         for (i = 0; i < argc; ++i) {
 553                 v = webcgi_get(argv[i]);
 554                 if (v) web_puts(v);
 555         }
 556 }
 557
 558 void asp_time(int argc, char **argv)
 559 {
 560         time_t t;
 561         char s[64];
 562
 563         t = time(NULL);
 564         if (t < Y2K) {
 565                 web_puts("Not Available");
 566         }
 567         else {
 568                 strftime(s, sizeof(s), "%a, %d %b %Y %H:%M:%S %z", localtime(&t));
 569                 web_puts(s);
 570         }
 571 }
 572
 573 void asp_wanup(int argc, char **argv)
 574 {
 575         web_puts(check_wanup() ? "1" : "0");
 576 }
 577
 578 void asp_wanstatus(int argc, char **argv)
 579 {
 580         const char *p;
 581
 582         if ((using_dhcpc()) && (f_exists("/var/lib/misc/dhcpc.renewing"))) {
 583                 p = "Renewing...";
 584         }
 585         else if (check_wanup()) {
 586                 p = "Connected";
 587         }
 588         else if (f_exists("/var/lib/misc/wan.connecting")) {
 589                 p = "Connecting...";
 590         }
 591         else {
 592                 p = "Disconnected";
 593         }
 594         web_puts(p);
 595 }
 596
 597 void asp_link_uptime(int argc, char **argv)
 598 {
 599         struct sysinfo si;
 600         char buf[64];
 601         long uptime;
 602
 603         buf[0] = '-';
 604         buf[1] = 0;
 605         if (check_wanup()) {
 606                 sysinfo(&si);
 607                 if (f_read("/var/lib/misc/wantime", &uptime, sizeof(uptime)) == sizeof(uptime)) {
 608                         reltime(buf, si.uptime - uptime);
 609                 }
 610         }
 611         web_puts(buf);
 612 }
 613
 614 void asp_rrule(int argc, char **argv)
 615 {
 616         char s[32];
 617         int i;
 618
 619         i = nvram_get_int("rruleN");
 620         sprintf(s, "rrule%d", i);
 621         web_puts("\nrrule = '");
 622         web_putj(nvram_safe_get(s));
 623         web_printf("';\nrruleN = %d;\n", i);
 624 }
 625
 626 void asp_compmac(int argc, char **argv)
 627 {
 628         char mac[32];
 629         char ifname[32];
 630
 631         if (get_client_info(mac, ifname)) {
 632                 web_puts(mac);
 633         }
 634 }
 635
 636 void asp_ident(int argc, char **argv)
 637 {
 638         web_puth(nvram_safe_get("router_name"));
 639 }
 640
 641 void asp_statfs(int argc, char **argv)
 642 {
 643         struct statfs sf;
 644         int mnt;
 645
 646         if (argc != 2) return;
 647
 648         // used for /cifs/, /jffs/... if it returns squashfs type, assume it's not mounted
 649         if ((statfs(argv[0], &sf) != 0) || (sf.f_type == 0x73717368)) {
 650                 mnt = 0;
 651                 memset(&sf, 0, sizeof(sf));
 652 #ifdef TCONFIG_JFFS2
 653                 // for jffs, try to get total size from mtd partition
 654                 if (strncmp(argv[1], "jffs", 4) == 0) {
 655                         int part;
 656
 657                         if (mtd_getinfo(argv[1], &part, (int *)&sf.f_blocks)) {
 658                                 sf.f_bsize = 1;
 659                         }
 660                 }
 661 #endif
 662         }
 663         else {
 664                 mnt = 1;
 665         }
 666
 667         web_printf(
 668                         "\n%s = {\n"
 669                         "\tmnt: %d,\n"
 670                         "\tsize: %llu,\n"
 671                         "\tfree: %llu\n"
 672                         "};\n",
 673                         argv[1], mnt,
 674                         ((uint64_t)sf.f_bsize * sf.f_blocks),
 675                         ((uint64_t)sf.f_bsize * sf.f_bfree));
 676 }
 677
 678 void asp_notice(int argc, char **argv)
 679 {
 680         char s[256];
 681         char buf[2048];
 682
 683         if (argc != 1) return;
 684         snprintf(s, sizeof(s), "/var/notice/%s", argv[0]);
 685         if (f_read_string(s, buf, sizeof(buf)) <= 0) return;
 686         web_putj(buf);
 687 }
 688
 689 void wo_wakeup(char *url)
 690 {
 691         char *mac;
 692         char *p;
 693         char *end;
 694
 695         if ((mac = webcgi_get("mac")) != NULL) {
 696                 end = mac + strlen(mac);
 697                 while (mac < end) {
 698                         while ((*mac == ' ') || (*mac == '\t') || (*mac == '\r') || (*mac == '\n')) ++mac;
 699                         if (*mac == 0) break;
 700
 701                         p = mac;
 702                         while ((*p != 0) && (*p != ' ') && (*p != '\r') && (*p != '\n')) ++p;
 703                         *p = 0;
 704
 705                         eval("ether-wake", "-b", "-i", nvram_safe_get("lan_ifname"), mac);
 706                         mac = p + 1;
 707                 }
 708         }
 709         common_redirect();
 710 }
 711
 712 void asp_dns(int argc, char **argv)
 713 {
 714         char s[128];
 715         int i;
 716         const dns_list_t *dns;
 717
 718         dns = get_dns();        // static buffer
 719         strcpy(s, "\ndns = [");
 720         for (i = 0 ; i < dns->count; ++i) {
 721                 sprintf(s + strlen(s), "%s'%s:%u'", i ? "," : "", inet_ntoa(dns->dns[i].addr), dns->dns[i].port);
 722         }
 723         strcat(s, "];\n");
 724         web_puts(s);
 725 }
 726
 727 int resolve_addr(const char *ip, char *host)
 728 {
 729         struct addrinfo hints;
 730         struct addrinfo *res;
 731         int ret;
 732
 733         memset(&hints, 0, sizeof(hints));
 734         hints.ai_family = AF_UNSPEC;
 735         hints.ai_socktype = SOCK_STREAM;
 736
 737         ret = getaddrinfo(ip, NULL, &hints, &res);
 738         if (ret == 0) {
 739                 ret = getnameinfo(res->ai_addr, res->ai_addrlen, host, NI_MAXHOST, NULL, 0, 0);
 740                 freeaddrinfo(res);
 741         }
 742         return ret;
 743 }
 744
 745 void wo_resolve(char *url)
 746 {
 747         char *p;
 748         char *ip;
 749         char host[NI_MAXHOST];
 750         char comma;
 751         char *js;
 752
 753         comma = ' ';
 754         web_puts("\nresolve_data = [\n");
 755         if ((p = webcgi_get("ip")) != NULL) {
 756                 while ((ip = strsep(&p, ",")) != NULL) {
 757                         if (resolve_addr(ip, host) != 0) continue;
 758                         js = js_string(host);
 759                         web_printf("%c['%s','%s']", comma, ip, js);
 760                         free(js);
 761                         comma = ',';
 762                 }
 763         }
 764         web_puts("];\n");
 765 }