luci2.c

   1 /*
   2  * luci-rpcd - LuCI UBUS RPC server
   3  *
   4  *   Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or 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
  19 #include <fcntl.h>
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <ctype.h>
  25 #include <sys/wait.h>
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <sys/statvfs.h>
  29 #include <dirent.h>
  30 #include <arpa/inet.h>
  31 #include <signal.h>
  32
  33 #include "luci2.h"
  34 #include "exec.h"
  35
  36 static struct blob_buf buf;
  37 static struct uci_context *cursor;
  38
  39 enum {
  40         RPC_S_PID,
  41         RPC_S_SIGNAL,
  42         __RPC_S_MAX,
  43 };
  44
  45 static const struct blobmsg_policy rpc_signal_policy[__RPC_S_MAX] = {
  46         [RPC_S_PID]    = { .name = "pid",    .type = BLOBMSG_TYPE_INT32 },
  47         [RPC_S_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
  48 };
  49
  50 enum {
  51         RPC_I_NAME,
  52         RPC_I_ACTION,
  53         __RPC_I_MAX,
  54 };
  55
  56 static const struct blobmsg_policy rpc_init_policy[__RPC_I_MAX] = {
  57         [RPC_I_NAME]   = { .name = "name",   .type = BLOBMSG_TYPE_STRING },
  58         [RPC_I_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_STRING },
  59 };
  60
  61 enum {
  62         RPC_D_DATA,
  63         __RPC_D_MAX
  64 };
  65
  66 static const struct blobmsg_policy rpc_data_policy[__RPC_D_MAX] = {
  67         [RPC_D_DATA]   = { .name = "data",  .type = BLOBMSG_TYPE_STRING },
  68 };
  69
  70 enum {
  71         RPC_K_KEYS,
  72         __RPC_K_MAX
  73 };
  74
  75 static const struct blobmsg_policy rpc_sshkey_policy[__RPC_K_MAX] = {
  76         [RPC_K_KEYS]   = { .name = "keys",   .type = BLOBMSG_TYPE_ARRAY },
  77 };
  78
  79 enum {
  80         RPC_P_USER,
  81         RPC_P_PASSWORD,
  82         __RPC_P_MAX
  83 };
  84
  85 static const struct blobmsg_policy rpc_password_policy[__RPC_P_MAX] = {
  86         [RPC_P_USER]     = { .name = "user",     .type = BLOBMSG_TYPE_STRING },
  87         [RPC_P_PASSWORD] = { .name = "password", .type = BLOBMSG_TYPE_STRING },
  88 };
  89
  90 enum {
  91         RPC_OM_LIMIT,
  92         RPC_OM_OFFSET,
  93         RPC_OM_PATTERN,
  94         __RPC_OM_MAX
  95 };
  96
  97 static const struct blobmsg_policy rpc_opkg_match_policy[__RPC_OM_MAX] = {
  98         [RPC_OM_LIMIT]    = { .name = "limit",    .type = BLOBMSG_TYPE_INT32  },
  99         [RPC_OM_OFFSET]   = { .name = "offset",   .type = BLOBMSG_TYPE_INT32  },
 100         [RPC_OM_PATTERN]  = { .name = "pattern",  .type = BLOBMSG_TYPE_STRING },
 101 };
 102
 103 enum {
 104         RPC_OP_PACKAGE,
 105         __RPC_OP_MAX
 106 };
 107
 108 static const struct blobmsg_policy rpc_opkg_package_policy[__RPC_OP_MAX] = {
 109         [RPC_OP_PACKAGE]  = { .name = "package",  .type = BLOBMSG_TYPE_STRING },
 110 };
 111
 112 enum {
 113         RPC_UPGRADE_KEEP,
 114         __RPC_UPGRADE_MAX
 115 };
 116
 117 static const struct blobmsg_policy rpc_upgrade_policy[__RPC_UPGRADE_MAX] = {
 118         [RPC_UPGRADE_KEEP] = { .name = "keep",    .type = BLOBMSG_TYPE_BOOL },
 119 };
 120
 121
 122 static int
 123 rpc_errno_status(void)
 124 {
 125         switch (errno)
 126         {
 127         case EACCES:
 128                 return UBUS_STATUS_PERMISSION_DENIED;
 129
 130         case ENOTDIR:
 131                 return UBUS_STATUS_INVALID_ARGUMENT;
 132
 133         case ENOENT:
 134                 return UBUS_STATUS_NOT_FOUND;
 135
 136         case EINVAL:
 137                 return UBUS_STATUS_INVALID_ARGUMENT;
 138
 139         default:
 140                 return UBUS_STATUS_UNKNOWN_ERROR;
 141         }
 142 }
 143
 144 static void
 145 log_read(FILE *log, int logsize)
 146 {
 147         int len;
 148         char *logbuf;
 149
 150         if (logsize == 0)
 151                 logsize = RPC_LUCI2_DEF_LOGSIZE;
 152
 153         len = (logsize > RPC_LUCI2_MAX_LOGSIZE) ? RPC_LUCI2_MAX_LOGSIZE : logsize;
 154         logbuf = blobmsg_alloc_string_buffer(&buf, "log", len + 1);
 155
 156         if (!logbuf)
 157                 return;
 158
 159         while (logsize > RPC_LUCI2_MAX_LOGSIZE)
 160         {
 161                 len = logsize % RPC_LUCI2_MAX_LOGSIZE;
 162
 163                 if (len == 0)
 164                         len = RPC_LUCI2_MAX_LOGSIZE;
 165
 166                 fread(logbuf, 1, len, log);
 167                 logsize -= len;
 168         }
 169
 170         len = fread(logbuf, 1, logsize, log);
 171         *(logbuf + len) = 0;
 172
 173         blobmsg_add_string_buffer(&buf);
 174 }
 175
 176 static int
 177 rpc_luci2_system_log(struct ubus_context *ctx, struct ubus_object *obj,
 178                      struct ubus_request_data *req, const char *method,
 179                      struct blob_attr *msg)
 180 {
 181         FILE *log;
 182         int logsize = 0;
 183         const char *logfile = NULL;
 184         struct stat st;
 185         struct uci_package *p;
 186         struct uci_element *e;
 187         struct uci_section *s;
 188         struct uci_ptr ptr = { .package = "system" };
 189
 190         uci_load(cursor, ptr.package, &p);
 191
 192         if (!p)
 193                 return UBUS_STATUS_NOT_FOUND;
 194
 195         uci_foreach_element(&p->sections, e)
 196         {
 197                 s = uci_to_section(e);
 198
 199                 if (strcmp(s->type, "system"))
 200                         continue;
 201
 202                 ptr.o = NULL;
 203                 ptr.option = "log_type";
 204                 ptr.section = e->name;
 205                 uci_lookup_ptr(cursor, &ptr, NULL, true);
 206                 break;
 207         }
 208
 209         if (ptr.o && ptr.o->type == UCI_TYPE_STRING &&
 210             !strcmp(ptr.o->v.string, "file"))
 211         {
 212                 ptr.o = NULL;
 213                 ptr.option = "log_file";
 214                 uci_lookup_ptr(cursor, &ptr, NULL, true);
 215
 216                 if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
 217                         logfile = ptr.o->v.string;
 218                 else
 219                         logfile = "/var/log/messages";
 220
 221                 if (stat(logfile, &st) || !(log = fopen(logfile, "r")))
 222                         goto fail;
 223
 224                 logsize = st.st_size;
 225         }
 226         else
 227         {
 228                 ptr.o = NULL;
 229                 ptr.option = "log_size";
 230                 uci_lookup_ptr(cursor, &ptr, NULL, true);
 231
 232                 if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
 233                         logsize = atoi(ptr.o->v.string) * 1024;
 234
 235                 if (!(log = popen("logread", "r")))
 236                         goto fail;
 237         }
 238
 239         blob_buf_init(&buf, 0);
 240
 241         log_read(log, logsize);
 242         fclose(log);
 243
 244         uci_unload(cursor, p);
 245         ubus_send_reply(ctx, req, buf.head);
 246         return 0;
 247
 248 fail:
 249         uci_unload(cursor, p);
 250         return rpc_errno_status();
 251 }
 252
 253 static int
 254 rpc_luci2_system_dmesg(struct ubus_context *ctx, struct ubus_object *obj,
 255                        struct ubus_request_data *req, const char *method,
 256                        struct blob_attr *msg)
 257 {
 258         FILE *log;
 259
 260         if (!(log = popen("dmesg", "r")))
 261                 return rpc_errno_status();
 262
 263         blob_buf_init(&buf, 0);
 264
 265         log_read(log, RPC_LUCI2_MAX_LOGSIZE);
 266         fclose(log);
 267
 268         ubus_send_reply(ctx, req, buf.head);
 269         return 0;
 270 }
 271
 272 static int
 273 rpc_luci2_system_diskfree(struct ubus_context *ctx, struct ubus_object *obj,
 274                           struct ubus_request_data *req, const char *method,
 275                           struct blob_attr *msg)
 276 {
 277         int i;
 278         void *c;
 279         struct statvfs s;
 280         const char *fslist[] = {
 281                 "/",    "root",
 282                 "/tmp", "tmp",
 283         };
 284
 285         blob_buf_init(&buf, 0);
 286
 287         for (i = 0; i < sizeof(fslist) / sizeof(fslist[0]); i += 2)
 288         {
 289                 if (statvfs(fslist[i], &s))
 290                         continue;
 291
 292                 c = blobmsg_open_table(&buf, fslist[i+1]);
 293
 294                 blobmsg_add_u32(&buf, "total", s.f_blocks * s.f_frsize);
 295                 blobmsg_add_u32(&buf, "free",  s.f_bfree  * s.f_frsize);
 296                 blobmsg_add_u32(&buf, "used", (s.f_blocks - s.f_bfree) * s.f_frsize);
 297
 298                 blobmsg_close_table(&buf, c);
 299         }
 300
 301         ubus_send_reply(ctx, req, buf.head);
 302         return 0;
 303 }
 304
 305 static int
 306 rpc_luci2_process_list(struct ubus_context *ctx, struct ubus_object *obj,
 307                        struct ubus_request_data *req, const char *method,
 308                        struct blob_attr *msg)
 309 {
 310         FILE *top;
 311         void *c, *d;
 312         char line[1024];
 313         char *pid, *ppid, *user, *stat, *vsz, *pvsz, *pcpu, *cmd;
 314
 315         if (!(top = popen("/bin/busybox top -bn1", "r")))
 316                 return rpc_errno_status();
 317
 318         blob_buf_init(&buf, 0);
 319         c = blobmsg_open_array(&buf, "processes");
 320
 321         while (fgets(line, sizeof(line) - 1, top))
 322         {
 323                 pid  = strtok(line, " ");
 324
 325                 if (*pid < '0' || *pid > '9')
 326                         continue;
 327
 328                 ppid = strtok(NULL, " ");
 329                 user = strtok(NULL, " ");
 330                 stat = strtok(NULL, " ");
 331
 332                 if (!stat)
 333                         continue;
 334
 335                 if (!*(stat + 1))
 336                         *(stat + 1) = ' ';
 337
 338                 if (!*(stat + 2))
 339                         *(stat + 2) = ' ';
 340
 341                 *(stat + 3) = 0;
 342
 343                 vsz  = strtok(stat + 4, " ");
 344                 pvsz = strtok(NULL, " ");
 345                 pcpu = strtok(NULL, " ");
 346                 cmd  = strtok(NULL, "\n");
 347
 348                 if (!cmd)
 349                         continue;
 350
 351                 d = blobmsg_open_table(&buf, NULL);
 352
 353                 blobmsg_add_u32(&buf, "pid", atoi(pid));
 354                 blobmsg_add_u32(&buf, "ppid", atoi(ppid));
 355                 blobmsg_add_string(&buf, "user", user);
 356                 blobmsg_add_string(&buf, "stat", stat);
 357                 blobmsg_add_u32(&buf, "vsize", atoi(vsz) * 1024);
 358                 blobmsg_add_u32(&buf, "vsize_percent", atoi(pvsz));
 359                 blobmsg_add_u32(&buf, "cpu_percent", atoi(pcpu));
 360                 blobmsg_add_string(&buf, "command", cmd);
 361
 362                 blobmsg_close_table(&buf, d);
 363         }
 364
 365         fclose(top);
 366         blobmsg_close_array(&buf, c);
 367
 368         ubus_send_reply(ctx, req, buf.head);
 369         return 0;
 370 }
 371
 372 static int
 373 rpc_luci2_process_signal(struct ubus_context *ctx, struct ubus_object *obj,
 374                          struct ubus_request_data *req, const char *method,
 375                          struct blob_attr *msg)
 376 {
 377         int pid, sig;
 378         struct blob_attr *tb[__RPC_S_MAX];
 379
 380         blobmsg_parse(rpc_signal_policy, __RPC_S_MAX, tb,
 381                       blob_data(msg), blob_len(msg));
 382
 383         if (!tb[RPC_S_SIGNAL] || !tb[RPC_S_PID])
 384         {
 385                 errno = EINVAL;
 386                 return rpc_errno_status();
 387         }
 388
 389         pid = blobmsg_get_u32(tb[RPC_S_PID]);
 390         sig = blobmsg_get_u32(tb[RPC_S_SIGNAL]);
 391
 392         if (kill(pid, sig))
 393                 return rpc_errno_status();
 394
 395         return 0;
 396 }
 397
 398 static int
 399 rpc_luci2_init_list(struct ubus_context *ctx, struct ubus_object *obj,
 400                     struct ubus_request_data *req, const char *method,
 401                     struct blob_attr *msg)
 402 {
 403         int n;
 404         void *c, *t;
 405         char *p, path[PATH_MAX];
 406         struct stat s;
 407         struct dirent *e;
 408         FILE *f;
 409         DIR *d;
 410
 411         if (!(d = opendir("/etc/init.d")))
 412                 return rpc_errno_status();
 413
 414         blob_buf_init(&buf, 0);
 415         c = blobmsg_open_array(&buf, "initscripts");
 416
 417         while ((e = readdir(d)) != NULL)
 418         {
 419                 snprintf(path, sizeof(path) - 1, "/etc/init.d/%s", e->d_name);
 420
 421                 if (stat(path, &s) || !S_ISREG(s.st_mode) || !(s.st_mode & S_IXUSR))
 422                         continue;
 423
 424                 if ((f = fopen(path, "r")) != NULL)
 425                 {
 426                         n = -1;
 427                         p = fgets(path, sizeof(path) - 1, f);
 428
 429                         if (!p || !strstr(p, "/etc/rc.common"))
 430                                 goto skip;
 431
 432                         t = blobmsg_open_table(&buf, NULL);
 433
 434                         blobmsg_add_string(&buf, "name", e->d_name);
 435
 436                         while (fgets(path, sizeof(path) - 1, f))
 437                         {
 438                                 p = strtok(path, "= \t");
 439
 440                                 if (!strcmp(p, "START") && !!(p = strtok(NULL, "= \t\n")))
 441                                 {
 442                                         n = atoi(p);
 443                                         blobmsg_add_u32(&buf, "start", n);
 444                                 }
 445                                 else if (!strcmp(p, "STOP") && !!(p = strtok(NULL, "= \t\n")))
 446                                 {
 447                                         blobmsg_add_u32(&buf, "stop", atoi(p));
 448                                         break;
 449                                 }
 450                         }
 451
 452                         if (n > -1)
 453                         {
 454                                 snprintf(path, sizeof(path) - 1, "/etc/rc.d/S%02d%s",
 455                                          n, e->d_name);
 456
 457                                 blobmsg_add_u8(&buf, "enabled",
 458                                                (!stat(path, &s) && (s.st_mode & S_IXUSR)));
 459                         }
 460                         else
 461                         {
 462                                 blobmsg_add_u8(&buf, "enabled", 0);
 463                         }
 464
 465                         blobmsg_close_table(&buf, t);
 466
 467 skip:
 468                         fclose(f);
 469                 }
 470         }
 471
 472         closedir(d);
 473         blobmsg_close_array(&buf, c);
 474
 475         ubus_send_reply(ctx, req, buf.head);
 476         return 0;
 477 }
 478
 479 static int
 480 rpc_luci2_init_action(struct ubus_context *ctx, struct ubus_object *obj,
 481                       struct ubus_request_data *req, const char *method,
 482                       struct blob_attr *msg)
 483 {
 484         int fd;
 485         pid_t pid;
 486         struct stat s;
 487         char path[PATH_MAX];
 488         const char *action;
 489         struct blob_attr *tb[__RPC_I_MAX];
 490
 491         blobmsg_parse(rpc_init_policy, __RPC_I_MAX, tb,
 492                       blob_data(msg), blob_len(msg));
 493
 494         if (!tb[RPC_I_NAME] || !tb[RPC_I_ACTION])
 495                 return UBUS_STATUS_INVALID_ARGUMENT;
 496
 497         action = blobmsg_data(tb[RPC_I_ACTION]);
 498
 499         if (strcmp(action, "start") && strcmp(action, "stop") &&
 500             strcmp(action, "reload") && strcmp(action, "restart") &&
 501             strcmp(action, "enable") && strcmp(action, "disable"))
 502                 return UBUS_STATUS_INVALID_ARGUMENT;
 503
 504         snprintf(path, sizeof(path) - 1, "/etc/init.d/%s",
 505                  (char *)blobmsg_data(tb[RPC_I_NAME]));
 506
 507         if (stat(path, &s))
 508                 return rpc_errno_status();
 509
 510         if (!(s.st_mode & S_IXUSR))
 511                 return UBUS_STATUS_PERMISSION_DENIED;
 512
 513         switch ((pid = fork()))
 514         {
 515         case -1:
 516                 return rpc_errno_status();
 517
 518         case 0:
 519                 uloop_done();
 520
 521                 if ((fd = open("/dev/null", O_RDWR)) > -1)
 522                 {
 523                         dup2(fd, 0);
 524                         dup2(fd, 1);
 525                         dup2(fd, 2);
 526
 527                         close(fd);
 528                 }
 529
 530                 chdir("/");
 531
 532                 if (execl(path, path, action, NULL))
 533                         return rpc_errno_status();
 534
 535         default:
 536                 return 0;
 537         }
 538 }
 539
 540 static int
 541 rpc_luci2_rclocal_get(struct ubus_context *ctx, struct ubus_object *obj,
 542                       struct ubus_request_data *req, const char *method,
 543                       struct blob_attr *msg)
 544 {
 545         FILE *f;
 546         char data[4096] = { 0 };
 547
 548         if (!(f = fopen("/etc/rc.local", "r")))
 549                 return rpc_errno_status();
 550
 551         fread(data, sizeof(data) - 1, 1, f);
 552         fclose(f);
 553
 554         blob_buf_init(&buf, 0);
 555         blobmsg_add_string(&buf, "data", data);
 556
 557         ubus_send_reply(ctx, req, buf.head);
 558         return 0;
 559 }
 560
 561 static int
 562 rpc_luci2_rclocal_set(struct ubus_context *ctx, struct ubus_object *obj,
 563                       struct ubus_request_data *req, const char *method,
 564                       struct blob_attr *msg)
 565 {
 566         FILE *f;
 567         struct blob_attr *tb[__RPC_D_MAX];
 568
 569         blobmsg_parse(rpc_data_policy, __RPC_D_MAX, tb,
 570                       blob_data(msg), blob_len(msg));
 571
 572         if (!tb[RPC_D_DATA] || blobmsg_data_len(tb[RPC_D_DATA]) >= 4096)
 573                 return UBUS_STATUS_INVALID_ARGUMENT;
 574
 575         if (!(f = fopen("/etc/rc.local", "w")))
 576                 return rpc_errno_status();
 577
 578         fwrite(blobmsg_data(tb[RPC_D_DATA]),
 579                blobmsg_data_len(tb[RPC_D_DATA]) - 1, 1, f);
 580
 581         fclose(f);
 582         return 0;
 583 }
 584
 585 static int
 586 rpc_luci2_crontab_get(struct ubus_context *ctx, struct ubus_object *obj,
 587                       struct ubus_request_data *req, const char *method,
 588                       struct blob_attr *msg)
 589 {
 590         FILE *f;
 591         char data[4096] = { 0 };
 592
 593         if (!(f = fopen("/etc/crontabs/root", "r")))
 594                 return rpc_errno_status();
 595
 596         fread(data, sizeof(data) - 1, 1, f);
 597         fclose(f);
 598
 599         blob_buf_init(&buf, 0);
 600         blobmsg_add_string(&buf, "data", data);
 601
 602         ubus_send_reply(ctx, req, buf.head);
 603         return 0;
 604 }
 605
 606 static int
 607 rpc_luci2_crontab_set(struct ubus_context *ctx, struct ubus_object *obj,
 608                       struct ubus_request_data *req, const char *method,
 609                       struct blob_attr *msg)
 610 {
 611         FILE *f;
 612         struct stat s;
 613         struct blob_attr *tb[__RPC_D_MAX];
 614
 615         blobmsg_parse(rpc_data_policy, __RPC_D_MAX, tb,
 616                       blob_data(msg), blob_len(msg));
 617
 618         if (!tb[RPC_D_DATA] || blobmsg_data_len(tb[RPC_D_DATA]) >= 4096)
 619                 return UBUS_STATUS_INVALID_ARGUMENT;
 620
 621         if (stat("/etc/crontabs", &s) && mkdir("/etc/crontabs", 0755))
 622                 return rpc_errno_status();
 623
 624         if (!(f = fopen("/etc/crontabs/root", "w")))
 625                 return rpc_errno_status();
 626
 627         fwrite(blobmsg_data(tb[RPC_D_DATA]),
 628                blobmsg_data_len(tb[RPC_D_DATA]) - 1, 1, f);
 629
 630         fclose(f);
 631         return 0;
 632 }
 633
 634 static int
 635 rpc_luci2_sshkeys_get(struct ubus_context *ctx, struct ubus_object *obj,
 636                       struct ubus_request_data *req, const char *method,
 637                       struct blob_attr *msg)
 638 {
 639         FILE *f;
 640         void *c;
 641         char *p, line[4096];
 642
 643         if (!(f = fopen("/etc/dropbear/authorized_keys", "r")))
 644                 return rpc_errno_status();
 645
 646         blob_buf_init(&buf, 0);
 647         c = blobmsg_open_array(&buf, "keys");
 648
 649         while (fgets(line, sizeof(line) - 1, f))
 650         {
 651                 for (p = line + strlen(line) - 1; (p > line) && isspace(*p); p--)
 652                         *p = 0;
 653
 654                 for (p = line; isspace(*p); p++)
 655                         *p = 0;
 656
 657                 if (*p)
 658                         blobmsg_add_string(&buf, NULL, p);
 659         }
 660
 661         blobmsg_close_array(&buf, c);
 662         fclose(f);
 663
 664         ubus_send_reply(ctx, req, buf.head);
 665         return 0;
 666 }
 667
 668 static int
 669 rpc_luci2_sshkeys_set(struct ubus_context *ctx, struct ubus_object *obj,
 670                       struct ubus_request_data *req, const char *method,
 671                       struct blob_attr *msg)
 672 {
 673         FILE *f;
 674         int rem;
 675         struct blob_attr *cur, *tb[__RPC_K_MAX];
 676
 677         blobmsg_parse(rpc_sshkey_policy, __RPC_K_MAX, tb,
 678                       blob_data(msg), blob_len(msg));
 679
 680         if (!tb[RPC_K_KEYS])
 681                 return UBUS_STATUS_INVALID_ARGUMENT;
 682
 683         if (!(f = fopen("/etc/dropbear/authorized_keys", "w")))
 684                 return rpc_errno_status();
 685
 686         blobmsg_for_each_attr(cur, tb[RPC_K_KEYS], rem)
 687         {
 688                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 689                         continue;
 690
 691                 fwrite(blobmsg_data(cur), blobmsg_data_len(cur) - 1, 1, f);
 692                 fwrite("\n", 1, 1, f);
 693         }
 694
 695         fclose(f);
 696         return 0;
 697 }
 698
 699 static int
 700 rpc_luci2_password_set(struct ubus_context *ctx, struct ubus_object *obj,
 701                        struct ubus_request_data *req, const char *method,
 702                        struct blob_attr *msg)
 703 {
 704         pid_t pid;
 705         int fd, fds[2];
 706         struct stat s;
 707         struct blob_attr *tb[__RPC_P_MAX];
 708
 709         blobmsg_parse(rpc_password_policy, __RPC_P_MAX, tb,
 710                       blob_data(msg), blob_len(msg));
 711
 712         if (!tb[RPC_P_USER] || !tb[RPC_P_PASSWORD])
 713                 return UBUS_STATUS_INVALID_ARGUMENT;
 714
 715         if (stat("/usr/bin/passwd", &s))
 716                 return UBUS_STATUS_NOT_FOUND;
 717
 718         if (!(s.st_mode & S_IXUSR))
 719                 return UBUS_STATUS_PERMISSION_DENIED;
 720
 721         if (pipe(fds))
 722                 return rpc_errno_status();
 723
 724         switch ((pid = fork()))
 725         {
 726         case -1:
 727                 close(fds[0]);
 728                 close(fds[1]);
 729                 return rpc_errno_status();
 730
 731         case 0:
 732                 uloop_done();
 733
 734                 dup2(fds[0], 0);
 735                 close(fds[0]);
 736                 close(fds[1]);
 737
 738                 if ((fd = open("/dev/null", O_RDWR)) > -1)
 739                 {
 740                         dup2(fd, 1);
 741                         dup2(fd, 2);
 742                         close(fd);
 743                 }
 744
 745                 chdir("/");
 746
 747                 if (execl("/usr/bin/passwd", "/usr/bin/passwd",
 748                           blobmsg_data(tb[RPC_P_USER]), NULL))
 749                         return rpc_errno_status();
 750
 751         default:
 752                 close(fds[0]);
 753
 754                 write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
 755                               blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
 756                 write(fds[1], "\n", 1);
 757
 758                 usleep(100 * 1000);
 759
 760                 write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
 761                               blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
 762                 write(fds[1], "\n", 1);
 763
 764                 close(fds[1]);
 765
 766                 waitpid(pid, NULL, 0);
 767
 768                 return 0;
 769         }
 770 }
 771
 772 static int
 773 rpc_luci2_led_list(struct ubus_context *ctx, struct ubus_object *obj,
 774                    struct ubus_request_data *req, const char *method,
 775                    struct blob_attr *msg)
 776 {
 777         DIR *d;
 778         FILE *f;
 779         void *list, *led, *trigger;
 780         char *p, *active_trigger, line[512];
 781         struct dirent *e;
 782
 783         if (!(d = opendir("/sys/class/leds")))
 784                 return rpc_errno_status();
 785
 786         blob_buf_init(&buf, 0);
 787         list = blobmsg_open_array(&buf, "leds");
 788
 789         while ((e = readdir(d)) != NULL)
 790         {
 791                 snprintf(line, sizeof(line) - 1, "/sys/class/leds/%s/trigger",
 792                          e->d_name);
 793
 794                 if (!(f = fopen(line, "r")))
 795                         continue;
 796
 797                 led = blobmsg_open_table(&buf, NULL);
 798
 799                 blobmsg_add_string(&buf, "name", e->d_name);
 800
 801                 if (fgets(line, sizeof(line) - 1, f))
 802                 {
 803                         trigger = blobmsg_open_array(&buf, "triggers");
 804
 805                         for (p = strtok(line, " \n"), active_trigger = NULL;
 806                              p != NULL;
 807                              p = strtok(NULL, " \n"))
 808                         {
 809                                 if (*p == '[')
 810                                 {
 811                                         *(p + strlen(p) - 1) = 0;
 812                                         *p++ = 0;
 813                                         active_trigger = p;
 814                                 }
 815
 816                                 blobmsg_add_string(&buf, NULL, p);
 817                         }
 818
 819                         blobmsg_close_array(&buf, trigger);
 820
 821                         if (active_trigger)
 822                                 blobmsg_add_string(&buf, "active_trigger", active_trigger);
 823                 }
 824
 825                 fclose(f);
 826
 827                 snprintf(line, sizeof(line) - 1, "/sys/class/leds/%s/brightness",
 828                          e->d_name);
 829
 830                 if ((f = fopen(line, "r")) != NULL)
 831                 {
 832                         if (fgets(line, sizeof(line) - 1, f))
 833                                 blobmsg_add_u32(&buf, "brightness", atoi(line));
 834
 835                         fclose(f);
 836                 }
 837
 838                 snprintf(line, sizeof(line) - 1, "/sys/class/leds/%s/max_brightness",
 839                          e->d_name);
 840
 841                 if ((f = fopen(line, "r")) != NULL)
 842                 {
 843                         if (fgets(line, sizeof(line) - 1, f))
 844                                 blobmsg_add_u32(&buf, "max_brightness", atoi(line));
 845
 846                         fclose(f);
 847                 }
 848
 849                 blobmsg_close_table(&buf, led);
 850         }
 851
 852         closedir(d);
 853
 854         blobmsg_close_array(&buf, list);
 855         ubus_send_reply(ctx, req, buf.head);
 856
 857         return 0;
 858 }
 859
 860 static int
 861 rpc_luci2_usb_list(struct ubus_context *ctx, struct ubus_object *obj,
 862                    struct ubus_request_data *req, const char *method,
 863                    struct blob_attr *msg)
 864 {
 865         DIR *d;
 866         FILE *f;
 867         int i;
 868         void *list, *device;
 869         char *p, line[512];
 870         struct stat s;
 871         struct dirent *e;
 872
 873         const char *attributes[] = {
 874                 "manufacturer", "vendor_name",  "s",
 875                 "product",      "product_name", "s",
 876                 "idVendor",     "vendor_id",    "x",
 877                 "idProduct",    "product_id",   "x",
 878                 "serial",       "serial",       "s",
 879                 "speed",        "speed",        "d",
 880         };
 881
 882         if (!(d = opendir("/sys/bus/usb/devices")))
 883                 return rpc_errno_status();
 884
 885         blob_buf_init(&buf, 0);
 886         list = blobmsg_open_array(&buf, "devices");
 887
 888         while ((e = readdir(d)) != NULL)
 889         {
 890                 if (e->d_name[0] < '0' || e->d_name[0] > '9')
 891                         continue;
 892
 893                 snprintf(line, sizeof(line) - 1,
 894                          "/sys/bus/usb/devices/%s/%s", e->d_name, attributes[0]);
 895
 896                 if (stat(line, &s))
 897                         continue;
 898
 899                 device = blobmsg_open_table(&buf, NULL);
 900
 901                 blobmsg_add_string(&buf, "name", e->d_name);
 902
 903                 for (i = 0; i < sizeof(attributes) / sizeof(attributes[0]); i += 3)
 904                 {
 905                         snprintf(line, sizeof(line) - 1,
 906                                          "/sys/bus/usb/devices/%s/%s", e->d_name, attributes[i]);
 907
 908                         if (!(f = fopen(line, "r")))
 909                                 continue;
 910
 911                         if (fgets(line, sizeof(line) - 1, f))
 912                         {
 913                                 switch (*attributes[i+2])
 914                                 {
 915                                 case 'x':
 916                                         blobmsg_add_u32(&buf, attributes[i+1],
 917                                                         strtoul(line, NULL, 16));
 918                                         break;
 919
 920                                 case 'd':
 921                                         blobmsg_add_u32(&buf, attributes[i+1],
 922                                                         strtoul(line, NULL, 10));
 923                                         break;
 924
 925                                 default:
 926                                         if ((p = strchr(line, '\n')) != NULL)
 927                                                 while (p > line && isspace(*p))
 928                                                         *p-- = 0;
 929
 930                                         blobmsg_add_string(&buf, attributes[i+1], line);
 931                                         break;
 932                                 }
 933                         }
 934
 935                         fclose(f);
 936                 }
 937
 938                 blobmsg_close_table(&buf, device);
 939         }
 940
 941         closedir(d);
 942
 943         blobmsg_close_array(&buf, list);
 944         ubus_send_reply(ctx, req, buf.head);
 945
 946         return 0;
 947 }
 948
 949 static int
 950 rpc_luci2_upgrade_test(struct ubus_context *ctx, struct ubus_object *obj,
 951                        struct ubus_request_data *req, const char *method,
 952                        struct blob_attr *msg)
 953 {
 954         const char *cmd[4] = { "sysupgrade", "--test", "/tmp/firmware.bin", NULL };
 955         return rpc_exec(cmd, NULL, NULL, NULL, NULL, ctx, req);
 956 }
 957
 958 static int
 959 rpc_luci2_upgrade_start(struct ubus_context *ctx, struct ubus_object *obj,
 960                         struct ubus_request_data *req, const char *method,
 961                         struct blob_attr *msg)
 962 {
 963         return 0;
 964 }
 965
 966 static int
 967 rpc_luci2_upgrade_clean(struct ubus_context *ctx, struct ubus_object *obj,
 968                         struct ubus_request_data *req, const char *method,
 969                         struct blob_attr *msg)
 970 {
 971         if (unlink("/tmp/firmware.bin"))
 972                 return rpc_errno_status();
 973
 974         return 0;
 975 }
 976
 977 static int
 978 rpc_luci2_backup_restore(struct ubus_context *ctx, struct ubus_object *obj,
 979                          struct ubus_request_data *req, const char *method,
 980                          struct blob_attr *msg)
 981 {
 982         const char *cmd[4] = { "sysupgrade", "--restore-backup",
 983                                "/tmp/backup.tar.gz", NULL };
 984
 985         return rpc_exec(cmd, NULL, NULL, NULL, NULL, ctx, req);
 986 }
 987
 988 static int
 989 rpc_luci2_backup_clean(struct ubus_context *ctx, struct ubus_object *obj,
 990                        struct ubus_request_data *req, const char *method,
 991                        struct blob_attr *msg)
 992 {
 993         if (unlink("/tmp/backup.tar.gz"))
 994                 return rpc_errno_status();
 995
 996         return 0;
 997 }
 998
 999 static int
1000 rpc_luci2_reset_test(struct ubus_context *ctx, struct ubus_object *obj,
1001                      struct ubus_request_data *req, const char *method,
1002                      struct blob_attr *msg)
1003 {
1004         FILE *mtd;
1005         struct stat s;
1006         char line[64] = { 0 };
1007         bool supported = false;
1008
1009         if (!stat("/sbin/mtd", &s) && (s.st_mode & S_IXUSR))
1010         {
1011                 if ((mtd = fopen("/proc/mtd", "r")) != NULL)
1012                 {
1013                         while (fgets(line, sizeof(line) - 1, mtd))
1014                         {
1015                                 if (strstr(line, "\"rootfs_data\""))
1016                                 {
1017                                         supported = true;
1018                                         break;
1019                                 }
1020                         }
1021
1022                         fclose(mtd);
1023                 }
1024         }
1025
1026         blob_buf_init(&buf, 0);
1027         blobmsg_add_u8(&buf, "supported", supported);
1028
1029         ubus_send_reply(ctx, req, buf.head);
1030
1031         return 0;
1032 }
1033
1034 static int
1035 rpc_luci2_reset_start(struct ubus_context *ctx, struct ubus_object *obj,
1036                       struct ubus_request_data *req, const char *method,
1037                       struct blob_attr *msg)
1038 {
1039         switch (fork())
1040         {
1041         case -1:
1042                 return rpc_errno_status();
1043
1044         case 0:
1045                 uloop_done();
1046
1047                 chdir("/");
1048
1049                 close(0);
1050                 close(1);
1051                 close(2);
1052
1053                 sleep(1);
1054
1055                 execl("/sbin/mtd", "/sbin/mtd", "-r", "erase", "rootfs_data", NULL);
1056
1057                 return rpc_errno_status();
1058
1059         default:
1060                 return 0;
1061         }
1062 }
1063
1064
1065 static FILE *
1066 dnsmasq_leasefile(void)
1067 {
1068         FILE *leases = NULL;
1069         struct uci_package *p;
1070         struct uci_element *e;
1071         struct uci_section *s;
1072         struct uci_ptr ptr = {
1073                 .package = "dhcp",
1074                 .section = NULL,
1075                 .option  = "leasefile"
1076         };
1077
1078         uci_load(cursor, ptr.package, &p);
1079
1080         if (!p)
1081                 return NULL;
1082
1083         uci_foreach_element(&p->sections, e)
1084         {
1085                 s = uci_to_section(e);
1086
1087                 if (strcmp(s->type, "dnsmasq"))
1088                         continue;
1089
1090                 ptr.section = e->name;
1091                 uci_lookup_ptr(cursor, &ptr, NULL, true);
1092                 break;
1093         }
1094
1095         if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
1096                 leases = fopen(ptr.o->v.string, "r");
1097
1098         uci_unload(cursor, p);
1099
1100         return leases;
1101 }
1102
1103 static int
1104 rpc_luci2_network_leases(struct ubus_context *ctx, struct ubus_object *obj,
1105                          struct ubus_request_data *req, const char *method,
1106                          struct blob_attr *msg)
1107 {
1108         FILE *leases;
1109         void *c, *d;
1110         char line[128];
1111         char *ts, *mac, *addr, *name;
1112         time_t now = time(NULL);
1113
1114         blob_buf_init(&buf, 0);
1115         c = blobmsg_open_array(&buf, "leases");
1116
1117         leases = dnsmasq_leasefile();
1118
1119         if (!leases)
1120                 goto out;
1121
1122         while (fgets(line, sizeof(line) - 1, leases))
1123         {
1124                 ts   = strtok(line, " \t");
1125                 mac  = strtok(NULL, " \t");
1126                 addr = strtok(NULL, " \t");
1127                 name = strtok(NULL, " \t");
1128
1129                 if (!ts || !mac || !addr || !name)
1130                         continue;
1131
1132                 if (strchr(addr, ':'))
1133                         continue;
1134
1135                 d = blobmsg_open_table(&buf, NULL);
1136
1137                 blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
1138                 blobmsg_add_string(&buf, "macaddr", mac);
1139                 blobmsg_add_string(&buf, "ipaddr", addr);
1140
1141                 if (strcmp(name, "*"))
1142                         blobmsg_add_string(&buf, "hostname", name);
1143
1144                 blobmsg_close_table(&buf, d);
1145         }
1146
1147         fclose(leases);
1148
1149 out:
1150         blobmsg_close_array(&buf, c);
1151         ubus_send_reply(ctx, req, buf.head);
1152
1153         return 0;
1154 }
1155
1156 static int
1157 rpc_luci2_network_leases6(struct ubus_context *ctx, struct ubus_object *obj,
1158                           struct ubus_request_data *req, const char *method,
1159                           struct blob_attr *msg)
1160 {
1161         FILE *leases;
1162         void *c, *d;
1163         char line[128];
1164         char *ts, *mac, *addr, *name, *duid;
1165         time_t now = time(NULL);
1166
1167         blob_buf_init(&buf, 0);
1168         c = blobmsg_open_array(&buf, "leases");
1169
1170         leases = fopen("/tmp/hosts/6relayd", "r");
1171
1172         if (leases)
1173         {
1174                 while (fgets(line, sizeof(line) - 1, leases))
1175                 {
1176                         if (strncmp(line, "# ", 2))
1177                                 continue;
1178
1179                         strtok(line + 2, " \t"); /* iface */
1180
1181                         duid = strtok(NULL, " \t");
1182
1183                         strtok(NULL, " \t"); /* iaid */
1184
1185                         name = strtok(NULL, " \t");
1186                         ts   = strtok(NULL, " \t");
1187
1188                         strtok(NULL, " \t"); /* id */
1189                         strtok(NULL, " \t"); /* length */
1190
1191                         addr = strtok(NULL, " \t\n");
1192
1193                         if (!addr)
1194                                 continue;
1195
1196                         d = blobmsg_open_table(&buf, NULL);
1197
1198                         blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
1199                         blobmsg_add_string(&buf, "duid", duid);
1200                         blobmsg_add_string(&buf, "ip6addr", addr);
1201
1202                         if (strcmp(name, "-"))
1203                                 blobmsg_add_string(&buf, "hostname", name);
1204
1205                         blobmsg_close_array(&buf, d);
1206                 }
1207
1208                 fclose(leases);
1209         }
1210         else
1211         {
1212                 leases = dnsmasq_leasefile();
1213
1214                 if (!leases)
1215                         goto out;
1216
1217                 while (fgets(line, sizeof(line) - 1, leases))
1218                 {
1219                         ts   = strtok(line, " \t");
1220                         mac  = strtok(NULL, " \t");
1221                         addr = strtok(NULL, " \t");
1222                         name = strtok(NULL, " \t");
1223                         duid = strtok(NULL, " \t\n");
1224
1225                         if (!ts || !mac || !addr || !duid)
1226                                 continue;
1227
1228                         if (!strchr(addr, ':'))
1229                                 continue;
1230
1231                         d = blobmsg_open_table(&buf, NULL);
1232
1233                         blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
1234                         blobmsg_add_string(&buf, "macaddr", mac);
1235                         blobmsg_add_string(&buf, "ip6addr", addr);
1236
1237                         if (strcmp(name, "*"))
1238                                 blobmsg_add_string(&buf, "hostname", name);
1239
1240                         if (strcmp(duid, "*"))
1241                                 blobmsg_add_string(&buf, "duid", name);
1242
1243                         blobmsg_close_table(&buf, d);
1244                 }
1245
1246                 fclose(leases);
1247         }
1248
1249 out:
1250         blobmsg_close_array(&buf, c);
1251         ubus_send_reply(ctx, req, buf.head);
1252
1253         return 0;
1254 }
1255
1256 static int
1257 rpc_luci2_network_ct_count(struct ubus_context *ctx, struct ubus_object *obj,
1258                            struct ubus_request_data *req, const char *method,
1259                            struct blob_attr *msg)
1260 {
1261         FILE *f;
1262         char line[128];
1263
1264         blob_buf_init(&buf, 0);
1265
1266         if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_count", "r")) != NULL)
1267         {
1268                 if (fgets(line, sizeof(line) - 1, f))
1269                         blobmsg_add_u32(&buf, "count", atoi(line));
1270
1271                 fclose(f);
1272         }
1273
1274         if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_max", "r")) != NULL)
1275         {
1276                 if (fgets(line, sizeof(line) - 1, f))
1277                         blobmsg_add_u32(&buf, "limit", atoi(line));
1278
1279                 fclose(f);
1280         }
1281
1282         ubus_send_reply(ctx, req, buf.head);
1283
1284         return 0;
1285 }
1286
1287 static int
1288 rpc_luci2_network_ct_table(struct ubus_context *ctx, struct ubus_object *obj,
1289                            struct ubus_request_data *req, const char *method,
1290                            struct blob_attr *msg)
1291 {
1292         FILE *f;
1293         int i;
1294         void *c, *d;
1295         char *p, line[512];
1296         bool seen[6];
1297
1298         blob_buf_init(&buf, 0);
1299         c = blobmsg_open_array(&buf, "entries");
1300
1301         if ((f = fopen("/proc/net/nf_conntrack", "r")) != NULL)
1302         {
1303                 while (fgets(line, sizeof(line) - 1, f))
1304                 {
1305                         d = blobmsg_open_table(&buf, NULL);
1306                         memset(seen, 0, sizeof(seen));
1307
1308                         for (i = 0, p = strtok(line, " "); p; i++, p = strtok(NULL, " "))
1309                         {
1310                                 if (i == 0)
1311                                         blobmsg_add_u8(&buf, "ipv6", !strcmp(p, "ipv6"));
1312                                 else if (i == 3)
1313                                         blobmsg_add_u32(&buf, "protocol", atoi(p));
1314                                 else if (i == 4)
1315                                         blobmsg_add_u32(&buf, "expires", atoi(p));
1316                                 else if (i >= 5)
1317                                 {
1318                                         if (*p == '[')
1319                                                 continue;
1320
1321                                         if (!seen[0] && !strncmp(p, "src=", 4))
1322                                         {
1323                                                 blobmsg_add_string(&buf, "src", p + 4);
1324                                                 seen[0] = true;
1325                                         }
1326                                         else if (!seen[1] && !strncmp(p, "dst=", 4))
1327                                         {
1328                                                 blobmsg_add_string(&buf, "dest", p + 4);
1329                                                 seen[1] = true;
1330                                         }
1331                                         else if (!seen[2] && !strncmp(p, "sport=", 6))
1332                                         {
1333                                                 blobmsg_add_u32(&buf, "sport", atoi(p + 6));
1334                                                 seen[2] = true;
1335                                         }
1336                                         else if (!seen[3] && !strncmp(p, "dport=", 6))
1337                                         {
1338                                                 blobmsg_add_u32(&buf, "dport", atoi(p + 6));
1339                                                 seen[3] = true;
1340                                         }
1341                                         else if (!strncmp(p, "packets=", 8))
1342                                         {
1343                                                 blobmsg_add_u32(&buf,
1344                                                                 seen[4] ? "tx_packets" : "rx_packets",
1345                                                                 atoi(p + 8));
1346                                                 seen[4] = true;
1347                                         }
1348                                         else if (!strncmp(p, "bytes=", 6))
1349                                         {
1350                                                 blobmsg_add_u32(&buf,
1351                                                                                 seen[5] ? "tx_bytes" : "rx_bytes",
1352                                                                 atoi(p + 6));
1353                                                 seen[5] = true;
1354                                         }
1355                                 }
1356                         }
1357
1358                         blobmsg_close_table(&buf, d);
1359                 }
1360
1361                 fclose(f);
1362         }
1363
1364         blobmsg_close_array(&buf, c);
1365         ubus_send_reply(ctx, req, buf.head);
1366
1367         return 0;
1368 }
1369
1370 static int
1371 rpc_luci2_network_arp_table(struct ubus_context *ctx, struct ubus_object *obj,
1372                             struct ubus_request_data *req, const char *method,
1373                             struct blob_attr *msg)
1374 {
1375         FILE *f;
1376         void *c, *d;
1377         char *addr, *mac, *dev, line[128];
1378
1379         blob_buf_init(&buf, 0);
1380         c = blobmsg_open_array(&buf, "entries");
1381
1382         if ((f = fopen("/proc/net/arp", "r")) != NULL)
1383         {
1384                 /* skip header line */
1385                 fgets(line, sizeof(line) - 1, f);
1386
1387                 while (fgets(line, sizeof(line) - 1, f))
1388                 {
1389                         addr = strtok(line, " \t");
1390
1391                         strtok(NULL, " \t"); /* HW type */
1392                         strtok(NULL, " \t"); /* Flags */
1393
1394                         mac = strtok(NULL, " \t");
1395
1396                         strtok(NULL, " \t"); /* Mask */
1397
1398                         dev = strtok(NULL, " \t\n");
1399
1400                         if (!dev)
1401                                 continue;
1402
1403                         d = blobmsg_open_table(&buf, NULL);
1404                         blobmsg_add_string(&buf, "ipaddr", addr);
1405                         blobmsg_add_string(&buf, "macaddr", mac);
1406                         blobmsg_add_string(&buf, "device", dev);
1407                         blobmsg_close_table(&buf, d);
1408                 }
1409
1410                 fclose(f);
1411         }
1412
1413         blobmsg_close_array(&buf, c);
1414         ubus_send_reply(ctx, req, buf.head);
1415
1416         return 0;
1417 }
1418
1419 static void
1420 put_hexaddr(const char *name, const char *s, const char *m)
1421 {
1422         int bits;
1423         struct in_addr a;
1424         char as[sizeof("255.255.255.255/32\0")];
1425
1426         a.s_addr = strtoul(s, NULL, 16);
1427         inet_ntop(AF_INET, &a, as, sizeof(as));
1428
1429         if (m)
1430         {
1431                 for (a.s_addr = ntohl(strtoul(m, NULL, 16)), bits = 0;
1432                      a.s_addr & 0x80000000;
1433                      a.s_addr <<= 1)
1434                         bits++;
1435
1436                 sprintf(as + strlen(as), "/%u", bits);
1437         }
1438
1439         blobmsg_add_string(&buf, name, as);
1440 }
1441
1442 static int
1443 rpc_luci2_network_routes(struct ubus_context *ctx, struct ubus_object *obj,
1444                          struct ubus_request_data *req, const char *method,
1445                          struct blob_attr *msg)
1446 {
1447         FILE *routes;
1448         void *c, *d;
1449         char *dst, *dmask, *next, *metric, *device;
1450         char line[256];
1451         unsigned int n;
1452
1453         if (!(routes = fopen("/proc/net/route", "r")))
1454                 return rpc_errno_status();
1455
1456         blob_buf_init(&buf, 0);
1457         c = blobmsg_open_array(&buf, "routes");
1458
1459         /* skip header line */
1460         fgets(line, sizeof(line) - 1, routes);
1461
1462         while (fgets(line, sizeof(line) - 1, routes))
1463         {
1464                 device = strtok(line, "\t ");
1465                 dst    = strtok(NULL, "\t ");
1466                 next   = strtok(NULL, "\t ");
1467
1468                 strtok(NULL, "\t "); /* flags */
1469                 strtok(NULL, "\t "); /* refcount */
1470                 strtok(NULL, "\t "); /* usecount */
1471
1472                 metric = strtok(NULL, "\t ");
1473                 dmask  = strtok(NULL, "\t ");
1474
1475                 if (!dmask)
1476                         continue;
1477
1478                 d = blobmsg_open_table(&buf, NULL);
1479
1480                 put_hexaddr("target", dst, dmask);
1481                 put_hexaddr("nexthop", next, NULL);
1482
1483                 n = strtoul(metric, NULL, 10);
1484                 blobmsg_add_u32(&buf, "metric", n);
1485
1486                 blobmsg_add_string(&buf, "device", device);
1487
1488                 blobmsg_close_table(&buf, d);
1489         }
1490
1491         blobmsg_close_array(&buf, c);
1492         fclose(routes);
1493
1494         ubus_send_reply(ctx, req, buf.head);
1495         return 0;
1496 }
1497
1498 static void
1499 put_hex6addr(const char *name, const char *s, const char *m)
1500 {
1501         int i;
1502         struct in6_addr a;
1503         char as[INET6_ADDRSTRLEN + sizeof("/128")];
1504
1505 #define hex(x) \
1506         (((x) <= '9') ? ((x) - '0') : \
1507                 (((x) <= 'F') ? ((x) - 'A' + 10) : \
1508                         ((x) - 'a' + 10)))
1509
1510         for (i = 0; i < 16; i++, s += 2)
1511                 a.s6_addr[i] = (16 * hex(*s)) + hex(*(s+1));
1512
1513         inet_ntop(AF_INET6, &a, as, sizeof(as));
1514
1515         if (m)
1516                 sprintf(as + strlen(as), "/%lu", strtoul(m, NULL, 16));
1517
1518         blobmsg_add_string(&buf, name, as);
1519 }
1520
1521 static int
1522 rpc_luci2_network_routes6(struct ubus_context *ctx, struct ubus_object *obj,
1523                           struct ubus_request_data *req, const char *method,
1524                           struct blob_attr *msg)
1525 {
1526         FILE *routes;
1527         void *c, *d;
1528         char *src, *smask, *dst, *dmask, *next, *metric, *flags, *device;
1529         char line[256];
1530         unsigned int n;
1531
1532         if (!(routes = fopen("/proc/net/ipv6_route", "r")))
1533                 return rpc_errno_status();
1534
1535         blob_buf_init(&buf, 0);
1536         c = blobmsg_open_array(&buf, "routes");
1537
1538         while (fgets(line, sizeof(line) - 1, routes))
1539         {
1540                 dst    = strtok(line, " ");
1541                 dmask  = strtok(NULL, " ");
1542                 src    = strtok(NULL, " ");
1543                 smask  = strtok(NULL, " ");
1544                 next   = strtok(NULL, " ");
1545                 metric = strtok(NULL, " ");
1546
1547                 strtok(NULL, " "); /* refcount */
1548                 strtok(NULL, " "); /* usecount */
1549
1550                 flags  = strtok(NULL, " ");
1551                 device = strtok(NULL, " \n");
1552
1553                 if (!device)
1554                         continue;
1555
1556                 n = strtoul(flags, NULL, 16);
1557
1558                 if (!(n & 1))
1559                         continue;
1560
1561                 d = blobmsg_open_table(&buf, NULL);
1562
1563                 put_hex6addr("target", dst, dmask);
1564                 put_hex6addr("source", src, smask);
1565                 put_hex6addr("nexthop", next, NULL);
1566
1567                 n = strtoul(metric, NULL, 16);
1568                 blobmsg_add_u32(&buf, "metric", n);
1569
1570                 blobmsg_add_string(&buf, "device", device);
1571
1572                 blobmsg_close_table(&buf, d);
1573         }
1574
1575         blobmsg_close_array(&buf, c);
1576         fclose(routes);
1577
1578         ubus_send_reply(ctx, req, buf.head);
1579         return 0;
1580 }
1581
1582
1583 struct opkg_state {
1584         int cur_offset;
1585         int cur_count;
1586         int req_offset;
1587         int req_count;
1588         int total;
1589         bool open;
1590         void *array;
1591 };
1592
1593 static int
1594 opkg_parse_list(struct blob_buf *blob, char *buf, int len, void *priv)
1595 {
1596         struct opkg_state *s = priv;
1597
1598         char *ptr, *last;
1599         char *nl = strchr(buf, '\n');
1600         char *name = NULL, *vers = NULL, *desc = NULL;
1601         void *c;
1602
1603         if (!nl)
1604                 return 0;
1605
1606         s->total++;
1607
1608         if (s->cur_offset++ < s->req_offset)
1609                 goto skip;
1610
1611         if (s->cur_count++ >= s->req_count)
1612                 goto skip;
1613
1614         if (!s->open)
1615         {
1616                 s->open  = true;
1617                 s->array = blobmsg_open_array(blob, "packages");
1618         }
1619
1620         for (ptr = buf, last = buf, *nl = 0; ptr <= nl; ptr++)
1621         {
1622                 if (!*ptr || (*ptr == ' ' && *(ptr+1) == '-' && *(ptr+2) == ' '))
1623                 {
1624                         if (!name)
1625                         {
1626                                 name = last;
1627                                 last = ptr + 3;
1628                                 *ptr = 0;
1629                                 ptr += 2;
1630                         }
1631                         else if (!vers)
1632                         {
1633                                 vers = last;
1634                                 desc = *ptr ? (ptr + 3) : NULL;
1635                                 *ptr = 0;
1636                                 break;
1637                         }
1638                 }
1639         }
1640
1641         if (name && vers)
1642         {
1643                 c = blobmsg_open_array(blob, NULL);
1644
1645                 blobmsg_add_string(blob, NULL, name);
1646                 blobmsg_add_string(blob, NULL, vers);
1647
1648                 if (desc && *desc)
1649                         blobmsg_add_string(blob, NULL, desc);
1650
1651                 blobmsg_close_array(blob, c);
1652         }
1653
1654 skip:
1655         return (nl - buf + 1);
1656 }
1657
1658 static void
1659 opkg_finish_list(struct blob_buf *blob, int status, void *priv)
1660 {
1661         struct opkg_state *s = priv;
1662
1663         if (!s->open)
1664                 return;
1665
1666         blobmsg_close_array(blob, s->array);
1667         blobmsg_add_u32(blob, "total", s->total);
1668 }
1669
1670 static int
1671 opkg_exec_list(const char *action, struct blob_attr *msg,
1672                struct ubus_context *ctx, struct ubus_request_data *req)
1673 {
1674         struct opkg_state *state = NULL;
1675         struct blob_attr *tb[__RPC_OM_MAX];
1676         const char *cmd[5] = { "opkg", action, "-nocase", NULL, NULL };
1677
1678         blobmsg_parse(rpc_opkg_match_policy, __RPC_OM_MAX, tb,
1679                       blob_data(msg), blob_len(msg));
1680
1681         state = malloc(sizeof(*state));
1682
1683         if (!state)
1684                 return UBUS_STATUS_UNKNOWN_ERROR;
1685
1686         memset(state, 0, sizeof(*state));
1687
1688         if (tb[RPC_OM_PATTERN])
1689                 cmd[3] = blobmsg_data(tb[RPC_OM_PATTERN]);
1690
1691         if (tb[RPC_OM_LIMIT])
1692                 state->req_count = blobmsg_get_u32(tb[RPC_OM_LIMIT]);
1693
1694         if (tb[RPC_OM_OFFSET])
1695                 state->req_offset = blobmsg_get_u32(tb[RPC_OM_OFFSET]);
1696
1697         if (state->req_offset < 0)
1698                 state->req_offset = 0;
1699
1700         if (state->req_count <= 0 || state->req_count > 100)
1701                 state->req_count = 100;
1702
1703         return rpc_exec(cmd, opkg_parse_list, NULL, opkg_finish_list,
1704                         state, ctx, req);
1705 }
1706
1707
1708 static int
1709 rpc_luci2_opkg_list(struct ubus_context *ctx, struct ubus_object *obj,
1710                     struct ubus_request_data *req, const char *method,
1711                     struct blob_attr *msg)
1712 {
1713         return opkg_exec_list("list", msg, ctx, req);
1714 }
1715
1716 static int
1717 rpc_luci2_opkg_list_installed(struct ubus_context *ctx, struct ubus_object *obj,
1718                               struct ubus_request_data *req, const char *method,
1719                               struct blob_attr *msg)
1720 {
1721         return opkg_exec_list("list-installed", msg, ctx, req);
1722 }
1723
1724 static int
1725 rpc_luci2_opkg_find(struct ubus_context *ctx, struct ubus_object *obj,
1726                     struct ubus_request_data *req, const char *method,
1727                     struct blob_attr *msg)
1728 {
1729         return opkg_exec_list("find", msg, ctx, req);
1730 }
1731
1732 static int
1733 rpc_luci2_opkg_update(struct ubus_context *ctx, struct ubus_object *obj,
1734                       struct ubus_request_data *req, const char *method,
1735                       struct blob_attr *msg)
1736 {
1737         const char *cmd[3] = { "opkg", "update", NULL };
1738         return rpc_exec(cmd, NULL, NULL, NULL, NULL, ctx, req);
1739 }
1740
1741 static int
1742 rpc_luci2_opkg_install(struct ubus_context *ctx, struct ubus_object *obj,
1743                        struct ubus_request_data *req, const char *method,
1744                        struct blob_attr *msg)
1745 {
1746         struct blob_attr *tb[__RPC_OP_MAX];
1747         const char *cmd[5] = { "opkg", "--force-overwrite",
1748                                "install", NULL, NULL };
1749
1750         blobmsg_parse(rpc_opkg_package_policy, __RPC_OP_MAX, tb,
1751                       blob_data(msg), blob_len(msg));
1752
1753         if (!tb[RPC_OP_PACKAGE])
1754                 return UBUS_STATUS_INVALID_ARGUMENT;
1755
1756         cmd[3] = blobmsg_data(tb[RPC_OP_PACKAGE]);
1757
1758         return rpc_exec(cmd, NULL, NULL, NULL, NULL, ctx, req);
1759 }
1760
1761 static int
1762 rpc_luci2_opkg_remove(struct ubus_context *ctx, struct ubus_object *obj,
1763                       struct ubus_request_data *req, const char *method,
1764                       struct blob_attr *msg)
1765 {
1766         struct blob_attr *tb[__RPC_OP_MAX];
1767         const char *cmd[5] = { "opkg", "--force-removal-of-dependent-packages",
1768                                "remove", NULL, NULL };
1769
1770         blobmsg_parse(rpc_opkg_package_policy, __RPC_OP_MAX, tb,
1771                       blob_data(msg), blob_len(msg));
1772
1773         if (!tb[RPC_OP_PACKAGE])
1774                 return UBUS_STATUS_INVALID_ARGUMENT;
1775
1776         cmd[3] = blobmsg_data(tb[RPC_OP_PACKAGE]);
1777
1778         return rpc_exec(cmd, NULL, NULL, NULL, NULL, ctx, req);
1779 }
1780
1781 static int
1782 rpc_luci2_opkg_config_get(struct ubus_context *ctx, struct ubus_object *obj,
1783                           struct ubus_request_data *req, const char *method,
1784                           struct blob_attr *msg)
1785 {
1786         FILE *f;
1787         char conf[2048] = { 0 };
1788
1789         if (!(f = fopen("/etc/opkg.conf", "r")))
1790                 return rpc_errno_status();
1791
1792         fread(conf, sizeof(conf) - 1, 1, f);
1793         fclose(f);
1794
1795         blob_buf_init(&buf, 0);
1796         blobmsg_add_string(&buf, "config", conf);
1797
1798         ubus_send_reply(ctx, req, buf.head);
1799         return 0;
1800 }
1801
1802 static int
1803 rpc_luci2_opkg_config_set(struct ubus_context *ctx, struct ubus_object *obj,
1804                           struct ubus_request_data *req, const char *method,
1805                           struct blob_attr *msg)
1806 {
1807         FILE *f;
1808         struct blob_attr *tb[__RPC_D_MAX];
1809
1810         blobmsg_parse(rpc_data_policy, __RPC_D_MAX, tb,
1811                       blob_data(msg), blob_len(msg));
1812
1813         if (!tb[RPC_D_DATA])
1814                 return UBUS_STATUS_INVALID_ARGUMENT;
1815
1816         if (blobmsg_data_len(tb[RPC_D_DATA]) >= 2048)
1817                 return UBUS_STATUS_NOT_SUPPORTED;
1818
1819         if (!(f = fopen("/etc/opkg.conf", "w")))
1820                 return rpc_errno_status();
1821
1822         fwrite(blobmsg_data(tb[RPC_D_DATA]),
1823                blobmsg_data_len(tb[RPC_D_DATA]), 1, f);
1824
1825         fclose(f);
1826         return 0;
1827 }
1828
1829
1830 int rpc_luci2_api_init(struct ubus_context *ctx)
1831 {
1832         int rv = 0;
1833
1834         static const struct ubus_method luci2_system_methods[] = {
1835                 UBUS_METHOD_NOARG("syslog",       rpc_luci2_system_log),
1836                 UBUS_METHOD_NOARG("dmesg",        rpc_luci2_system_dmesg),
1837                 UBUS_METHOD_NOARG("diskfree",     rpc_luci2_system_diskfree),
1838                 UBUS_METHOD_NOARG("process_list", rpc_luci2_process_list),
1839                 UBUS_METHOD("process_signal",     rpc_luci2_process_signal,
1840                                                   rpc_signal_policy),
1841                 UBUS_METHOD_NOARG("init_list",    rpc_luci2_init_list),
1842                 UBUS_METHOD("init_action",        rpc_luci2_init_action,
1843                                                   rpc_init_policy),
1844                 UBUS_METHOD_NOARG("rclocal_get",  rpc_luci2_rclocal_get),
1845                 UBUS_METHOD("rclocal_set",        rpc_luci2_rclocal_set,
1846                                                   rpc_data_policy),
1847                 UBUS_METHOD_NOARG("crontab_get",  rpc_luci2_crontab_get),
1848                 UBUS_METHOD("crontab_set",        rpc_luci2_crontab_set,
1849                                                   rpc_data_policy),
1850                 UBUS_METHOD_NOARG("sshkeys_get",  rpc_luci2_sshkeys_get),
1851                 UBUS_METHOD("sshkeys_set",        rpc_luci2_sshkeys_set,
1852                                                   rpc_sshkey_policy),
1853                 UBUS_METHOD("password_set",       rpc_luci2_password_set,
1854                                                   rpc_password_policy),
1855                 UBUS_METHOD_NOARG("led_list",     rpc_luci2_led_list),
1856                 UBUS_METHOD_NOARG("usb_list",     rpc_luci2_usb_list),
1857                 UBUS_METHOD_NOARG("upgrade_test", rpc_luci2_upgrade_test),
1858                 UBUS_METHOD("upgrade_start",      rpc_luci2_upgrade_start,
1859                                                   rpc_upgrade_policy),
1860                 UBUS_METHOD_NOARG("upgrade_clean", rpc_luci2_upgrade_clean),
1861                 UBUS_METHOD_NOARG("backup_restore", rpc_luci2_backup_restore),
1862                 UBUS_METHOD_NOARG("backup_clean", rpc_luci2_backup_clean),
1863                 UBUS_METHOD_NOARG("reset_test",   rpc_luci2_reset_test),
1864                 UBUS_METHOD_NOARG("reset_start",  rpc_luci2_reset_start)
1865         };
1866
1867         static struct ubus_object_type luci2_system_type =
1868                 UBUS_OBJECT_TYPE("luci-rpc-luci2-system", luci2_system_methods);
1869
1870         static struct ubus_object system_obj = {
1871                 .name = "luci2.system",
1872                 .type = &luci2_system_type,
1873                 .methods = luci2_system_methods,
1874                 .n_methods = ARRAY_SIZE(luci2_system_methods),
1875         };
1876
1877
1878         static const struct ubus_method luci2_network_methods[] = {
1879                 UBUS_METHOD_NOARG("conntrack_count", rpc_luci2_network_ct_count),
1880                 UBUS_METHOD_NOARG("conntrack_table", rpc_luci2_network_ct_table),
1881                 UBUS_METHOD_NOARG("arp_table",       rpc_luci2_network_arp_table),
1882                 UBUS_METHOD_NOARG("dhcp_leases",     rpc_luci2_network_leases),
1883                 UBUS_METHOD_NOARG("dhcp6_leases",    rpc_luci2_network_leases6),
1884                 UBUS_METHOD_NOARG("routes",          rpc_luci2_network_routes),
1885                 UBUS_METHOD_NOARG("routes6",         rpc_luci2_network_routes6),
1886         };
1887
1888         static struct ubus_object_type luci2_network_type =
1889                 UBUS_OBJECT_TYPE("luci-rpc-luci2-network", luci2_network_methods);
1890
1891         static struct ubus_object network_obj = {
1892                 .name = "luci2.network",
1893                 .type = &luci2_network_type,
1894                 .methods = luci2_network_methods,
1895                 .n_methods = ARRAY_SIZE(luci2_network_methods),
1896         };
1897
1898
1899         static const struct ubus_method luci2_opkg_methods[] = {
1900                 UBUS_METHOD("list",                  rpc_luci2_opkg_list,
1901                                                      rpc_opkg_match_policy),
1902                 UBUS_METHOD("list_installed",        rpc_luci2_opkg_list_installed,
1903                                                      rpc_opkg_match_policy),
1904                 UBUS_METHOD("find",                  rpc_luci2_opkg_find,
1905                                                      rpc_opkg_match_policy),
1906                 UBUS_METHOD("install",               rpc_luci2_opkg_install,
1907                                                      rpc_opkg_package_policy),
1908                 UBUS_METHOD("remove",                rpc_luci2_opkg_remove,
1909                                                      rpc_opkg_package_policy),
1910                 UBUS_METHOD_NOARG("update",          rpc_luci2_opkg_update),
1911                 UBUS_METHOD_NOARG("config_get",      rpc_luci2_opkg_config_get),
1912                 UBUS_METHOD("config_set",            rpc_luci2_opkg_config_set,
1913                                                      rpc_data_policy)
1914         };
1915
1916         static struct ubus_object_type luci2_opkg_type =
1917                 UBUS_OBJECT_TYPE("luci-rpc-luci2-network", luci2_opkg_methods);
1918
1919         static struct ubus_object opkg_obj = {
1920                 .name = "luci2.opkg",
1921                 .type = &luci2_opkg_type,
1922                 .methods = luci2_opkg_methods,
1923                 .n_methods = ARRAY_SIZE(luci2_opkg_methods),
1924         };
1925
1926         cursor = uci_alloc_context();
1927
1928         if (!cursor)
1929                 return UBUS_STATUS_UNKNOWN_ERROR;
1930
1931         rv |= ubus_add_object(ctx, &system_obj);
1932         rv |= ubus_add_object(ctx, &network_obj);
1933         rv |= ubus_add_object(ctx, &opkg_obj);
1934
1935         return rv;
1936 }