git.ozlabs.org Git - petitboot/blob - lib/pb-protocol/pb-protocol.c

   1
   2 #include <assert.h>
   3 #include <errno.h>
   4 #include <string.h>
   5 #include <stdbool.h>
   6 #include <stdint.h>
   7 #include <asm/byteorder.h>
   8
   9 #include <talloc/talloc.h>
  10 #include <list/list.h>
  11 #include <log/log.h>
  12
  13 #include "pb-protocol.h"
  14
  15
  16 /* Message format:
  17  *
  18  * 4-byte action, determines the remaining message content
  19  * 4-byte total payload len
  20  *   - not including action and payload len header
  21  *
  22  * action = 0x1: device add message
  23  *  payload:
  24  *   4-byte len, id
  25  *   1-byte type
  26  *   4-byte len, name
  27  *   4-byte len, description
  28  *   4-byte len, icon_file
  29  *
  30  *   4-byte option count
  31  *   for each option:
  32  *    4-byte len, id
  33  *    4-byte len, name
  34  *    4-byte len, description
  35  *    4-byte len, icon_file
  36  *    4-byte len, boot_image_file
  37  *    4-byte len, initrd_file
  38  *    4-byte len, dtb_file
  39  *    4-byte len, boot_args
  40  *    4-byte len, args_sig_file
  41  *
  42  * action = 0x2: device remove message
  43  *  payload:
  44  *   4-byte len, id
  45  *
  46  * action = 0x3: boot
  47  *  payload:
  48  *   4-byte len, boot option id
  49  *   4-byte len, boot_image_file
  50  *   4-byte len, initrd_file
  51  *   4-byte len, dtb_file
  52  *   4-byte len, boot_args
  53  *   4-byte len, args_sig_file
  54  *
  55  */
  56
  57 void pb_protocol_dump_device(const struct device *dev, const char *text,
  58         FILE *stream)
  59 {
  60         struct boot_option *opt;
  61
  62         fprintf(stream, "%snew dev:\n", text);
  63         fprintf(stream, "%s\tid:   %s\n", text, dev->id);
  64         fprintf(stream, "%s\tname: %s\n", text, dev->name);
  65         fprintf(stream, "%s\tdesc: %s\n", text, dev->description);
  66         fprintf(stream, "%s\ticon: %s\n", text, dev->icon_file);
  67         fprintf(stream, "%s\tboot options:\n", text);
  68         list_for_each_entry(&dev->boot_options, opt, list) {
  69                 fprintf(stream, "%s\t\tid:   %s\n", text, opt->id);
  70                 fprintf(stream, "%s\t\tname: %s\n", text, opt->name);
  71                 fprintf(stream, "%s\t\tdesc: %s\n", text, opt->description);
  72                 fprintf(stream, "%s\t\ticon: %s\n", text, opt->icon_file);
  73                 fprintf(stream, "%s\t\tboot: %s\n", text, opt->boot_image_file);
  74                 fprintf(stream, "%s\t\tinit: %s\n", text, opt->initrd_file);
  75                 fprintf(stream, "%s\t\tdtb:  %s\n", text, opt->dtb_file);
  76                 fprintf(stream, "%s\t\targs: %s\n", text, opt->boot_args);
  77                 fprintf(stream, "%s\t\tasig: %s\n", text, opt->args_sig_file);
  78                 fprintf(stream, "%s\t\ttype: %s\n", text,
  79                         opt->type == DISCOVER_BOOT_OPTION ? "boot" : "plugin");
  80         }
  81 }
  82
  83 int pb_protocol_device_cmp(const struct device *a, const struct device *b)
  84 {
  85         return !strcmp(a->id, b->id);
  86 }
  87
  88 int pb_protocol_boot_option_cmp(const struct boot_option *a,
  89         const struct boot_option *b)
  90 {
  91         return !strcmp(a->id, b->id);
  92 }
  93
  94 /* Write a string into the buffer, starting at pos.
  95  *
  96  * Returns the total length used for the write, including length header.
  97  */
  98 int pb_protocol_serialise_string(char *pos, const char *str)
  99 {
 100         int len = 0;
 101
 102         if (!pos)
 103                 return 0;
 104
 105         if (str)
 106                 len = strlen(str);
 107
 108         *(uint32_t *)pos = __cpu_to_be32(len);
 109         pos += sizeof(uint32_t);
 110
 111         if (str)
 112                 memcpy(pos, str, len);
 113
 114         return len + sizeof(uint32_t);
 115 }
 116
 117 /* Read a string from a buffer, allocating the new string as necessary.
 118  *
 119  * @param[in] ctx       The talloc context to base the allocation on
 120  * @param[in,out] pos   Where to start reading
 121  * @param[in,out] len   The amount of data remaining in the buffer
 122  * @param[out] str      Pointer to resuling string
 123  * @return              zero on success, non-zero on failure
 124  */
 125 static int read_string(void *ctx, const char **pos, unsigned int *len,
 126         char **str)
 127 {
 128         uint32_t str_len, read_len;
 129
 130         if (*len < sizeof(uint32_t))
 131                 return -1;
 132
 133         str_len = __be32_to_cpu(*(uint32_t *)(*pos));
 134         read_len = sizeof(uint32_t);
 135
 136         if (read_len + str_len > *len)
 137                 return -1;
 138
 139         if (str_len == 0)
 140                 *str = NULL;
 141         else
 142                 *str = talloc_strndup(ctx, *pos + read_len, str_len);
 143
 144         read_len += str_len;
 145
 146         /* all ok, update the caller's pointers */
 147         *pos += read_len;
 148         *len -= read_len;
 149
 150         return 0;
 151 }
 152
 153 static int read_u32(const char **pos, unsigned int *len, unsigned int *p)
 154 {
 155         if (*len < sizeof(uint32_t))
 156                 return -1;
 157
 158         *p = (unsigned int)__be32_to_cpu(*(uint32_t *)(*pos));
 159         *pos += sizeof(uint32_t);
 160         *len -= sizeof(uint32_t);
 161
 162         return 0;
 163 }
 164
 165 char *pb_protocol_deserialise_string(void *ctx,
 166                 const struct pb_protocol_message *message)
 167 {
 168         const char *buf;
 169         char *str;
 170         unsigned int len;
 171
 172         len = message->payload_len;
 173         buf = message->payload;
 174
 175         if (read_string(ctx, &buf, &len, &str))
 176                 return NULL;
 177
 178         return str;
 179 }
 180
 181 static int optional_strlen(const char *str)
 182 {
 183         if (!str)
 184                 return 0;
 185         return strlen(str);
 186 }
 187
 188 int pb_protocol_device_len(const struct device *dev)
 189 {
 190         return  4 + optional_strlen(dev->id) +
 191                 sizeof(dev->type) +
 192                 4 + optional_strlen(dev->name) +
 193                 4 + optional_strlen(dev->description) +
 194                 4 + optional_strlen(dev->icon_file);
 195 }
 196
 197 int pb_protocol_boot_option_len(const struct boot_option *opt)
 198 {
 199
 200         return  4 + optional_strlen(opt->device_id) +
 201                 4 + optional_strlen(opt->id) +
 202                 4 + optional_strlen(opt->name) +
 203                 4 + optional_strlen(opt->description) +
 204                 4 + optional_strlen(opt->icon_file) +
 205                 4 + optional_strlen(opt->boot_image_file) +
 206                 4 + optional_strlen(opt->initrd_file) +
 207                 4 + optional_strlen(opt->dtb_file) +
 208                 4 + optional_strlen(opt->boot_args) +
 209                 4 + optional_strlen(opt->args_sig_file) +
 210                 sizeof(opt->is_default) +
 211                 sizeof(opt->is_autoboot_default) +
 212                 sizeof(opt->type);
 213 }
 214
 215 int pb_protocol_boot_len(const struct boot_command *boot)
 216 {
 217         return  4 + optional_strlen(boot->option_id) +
 218                 4 + optional_strlen(boot->boot_image_file) +
 219                 4 + optional_strlen(boot->initrd_file) +
 220                 4 + optional_strlen(boot->dtb_file) +
 221                 4 + optional_strlen(boot->boot_args) +
 222                 4 + optional_strlen(boot->args_sig_file) +
 223                 4 + optional_strlen(boot->console);
 224 }
 225
 226 int pb_protocol_boot_status_len(const struct status *status)
 227 {
 228         return  4 +     /* type */
 229                 4 + optional_strlen(status->message) +
 230                 4 +     /* backlog */
 231                 4;      /* boot_active */
 232 }
 233
 234 int pb_protocol_system_info_len(const struct system_info *sysinfo)
 235 {
 236         unsigned int len, i;
 237
 238         len =   4 + optional_strlen(sysinfo->type) +
 239                 4 + optional_strlen(sysinfo->identifier) +
 240                 4 + 4;
 241
 242         len +=  4;
 243         for (i = 0; i < sysinfo->n_primary; i++)
 244                 len += 4 + optional_strlen(sysinfo->platform_primary[i]);
 245         len +=  4;
 246         for (i = 0; i < sysinfo->n_other; i++)
 247                 len += 4 + optional_strlen(sysinfo->platform_other[i]);
 248
 249         len +=  4;
 250         for (i = 0; i < sysinfo->n_bmc_current; i++)
 251                 len += 4 + optional_strlen(sysinfo->bmc_current[i]);
 252         len +=  4;
 253         for (i = 0; i < sysinfo->n_bmc_golden; i++)
 254                 len += 4 + optional_strlen(sysinfo->bmc_golden[i]);
 255
 256         for (i = 0; i < sysinfo->n_interfaces; i++) {
 257                 struct interface_info *if_info = sysinfo->interfaces[i];
 258                 len +=  4 + if_info->hwaddr_size +
 259                         4 + optional_strlen(if_info->name) +
 260                         sizeof(if_info->link) +
 261                         4 + optional_strlen(if_info->address) +
 262                         4 + optional_strlen(if_info->address_v6);
 263         }
 264
 265         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 266                 struct blockdev_info *bd_info = sysinfo->blockdevs[i];
 267                 len +=  4 + optional_strlen(bd_info->name) +
 268                         4 + optional_strlen(bd_info->uuid) +
 269                         4 + optional_strlen(bd_info->mountpoint);
 270         }
 271
 272         /* BMC MAC */
 273         len += HWADDR_SIZE;
 274
 275         return len;
 276 }
 277
 278 static int pb_protocol_interface_config_len(struct interface_config *conf)
 279 {
 280         unsigned int len;
 281
 282         len =   sizeof(conf->hwaddr) +
 283                 4 /* conf->ignore */;
 284
 285         if (conf->ignore)
 286                 return len;
 287
 288         len += 4 /* conf->method */;
 289
 290         if (conf->method == CONFIG_METHOD_STATIC) {
 291                 len += 4 + optional_strlen(conf->static_config.address);
 292                 len += 4 + optional_strlen(conf->static_config.gateway);
 293                 len += 4 + optional_strlen(conf->static_config.url);
 294         }
 295
 296         len += 4 /* conf->override */;
 297
 298         return len;
 299 }
 300
 301 int pb_protocol_config_len(const struct config *config)
 302 {
 303         unsigned int i, len;
 304
 305         len =   4 /* config->autoboot_enabled */ +
 306                 4 /* config->autoboot_timeout_sec */ +
 307                 4 /* config->safe_mode */;
 308
 309         len += 4;
 310         for (i = 0; i < config->network.n_interfaces; i++)
 311                 len += pb_protocol_interface_config_len(
 312                                 config->network.interfaces[i]);
 313
 314         len += 4;
 315         for (i = 0; i < config->network.n_dns_servers; i++)
 316                 len += 4 + optional_strlen(config->network.dns_servers[i]);
 317
 318         len += 4 + optional_strlen(config->http_proxy);
 319         len += 4 + optional_strlen(config->https_proxy);
 320
 321         len += 4;
 322         for (i = 0; i < config->n_autoboot_opts; i++) {
 323                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE)
 324                         len += 4 + 4;
 325                 else
 326                         len += 4 + 4 +
 327                                 optional_strlen(config->autoboot_opts[i].uuid);
 328         }
 329
 330         len += 4 + 4; /* ipmi_bootdev, ipmi_bootdev_persistent */
 331         len += 4; /* ipmi_bootdev_mailbox */
 332
 333         len += 4; /* allow_writes */
 334
 335         len += 4; /* n_consoles */
 336         for (i = 0; i < config->n_consoles; i++)
 337                 len += 4 + optional_strlen(config->consoles[i]);
 338
 339         len += 4 + optional_strlen(config->boot_console);
 340         len += 4; /* manual_console */
 341
 342         len += 4 + optional_strlen(config->lang);
 343
 344         return len;
 345 }
 346
 347 int pb_protocol_url_len(const char *url)
 348 {
 349         /* url + length field */
 350         return 4 + optional_strlen(url);
 351 }
 352
 353
 354 int pb_protocol_plugin_option_len(const struct plugin_option *opt)
 355 {
 356         unsigned int i, len = 0;
 357
 358         len += 4 + optional_strlen(opt->id);
 359         len += 4 + optional_strlen(opt->name);
 360         len += 4 + optional_strlen(opt->vendor);
 361         len += 4 + optional_strlen(opt->vendor_id);
 362         len += 4 + optional_strlen(opt->version);
 363         len += 4 + optional_strlen(opt->date);
 364         len += 4 + optional_strlen(opt->plugin_file);
 365
 366         len += 4; /* n_executables */
 367         for (i = 0; i < opt->n_executables; i++)
 368                 len += 4 + optional_strlen(opt->executables[i]);
 369
 370         return len;
 371 }
 372
 373 int pb_protocol_temp_autoboot_len(const struct autoboot_option *opt)
 374 {
 375         unsigned int len = 0;
 376
 377         /* boot_type */
 378         len += 4;
 379
 380         if (opt->boot_type == BOOT_DEVICE_TYPE)
 381                 len += 4;
 382         else
 383                 len += optional_strlen(opt->uuid);
 384
 385         return len;
 386 }
 387
 388 int pb_protocol_authenticate_len(struct auth_message *msg)
 389 {
 390         switch (msg->op) {
 391         case AUTH_MSG_REQUEST:
 392                 /* enum + password + length */
 393                 return 4 + 4 + optional_strlen(msg->password);
 394         case AUTH_MSG_RESPONSE:
 395                 /* enum + bool */
 396                 return 4 + 4;
 397         case AUTH_MSG_SET:
 398                 /* enum + password + password */
 399                 return 4 + 4 + optional_strlen(msg->set_password.password) +
 400                         4 + optional_strlen(msg->set_password.new_password);
 401         case AUTH_MSG_DECRYPT:
 402                 /* enum + password + device id */
 403                 return 4 + 4 + optional_strlen(msg->decrypt_dev.password) +
 404                         4 + optional_strlen(msg->decrypt_dev.device_id);
 405         default:
 406                 pb_log("%s: invalid input\n", __func__);
 407                 return 0;
 408         }
 409 }
 410
 411 int pb_protocol_serialise_device(const struct device *dev,
 412                 char *buf, int buf_len)
 413 {
 414         char *pos = buf;
 415
 416         pos += pb_protocol_serialise_string(pos, dev->id);
 417         *(enum device_type *)pos = dev->type;
 418         pos += sizeof(enum device_type);
 419         pos += pb_protocol_serialise_string(pos, dev->name);
 420         pos += pb_protocol_serialise_string(pos, dev->description);
 421         pos += pb_protocol_serialise_string(pos, dev->icon_file);
 422
 423         assert(pos <= buf + buf_len);
 424
 425         return (pos <= buf + buf_len) ? 0 : -1;
 426 }
 427
 428 int pb_protocol_serialise_boot_option(const struct boot_option *opt,
 429                 char *buf, int buf_len)
 430 {
 431         char *pos = buf;
 432
 433         pos += pb_protocol_serialise_string(pos, opt->device_id);
 434         pos += pb_protocol_serialise_string(pos, opt->id);
 435         pos += pb_protocol_serialise_string(pos, opt->name);
 436         pos += pb_protocol_serialise_string(pos, opt->description);
 437         pos += pb_protocol_serialise_string(pos, opt->icon_file);
 438         pos += pb_protocol_serialise_string(pos, opt->boot_image_file);
 439         pos += pb_protocol_serialise_string(pos, opt->initrd_file);
 440         pos += pb_protocol_serialise_string(pos, opt->dtb_file);
 441         pos += pb_protocol_serialise_string(pos, opt->boot_args);
 442         pos += pb_protocol_serialise_string(pos, opt->args_sig_file);
 443
 444         *(bool *)pos = opt->is_default;
 445         pos += sizeof(bool);
 446         *(bool *)pos = opt->is_autoboot_default;
 447         pos += sizeof(bool);
 448
 449         *(uint32_t *)pos = __cpu_to_be32(opt->type);
 450         pos += 4;
 451
 452         assert(pos <= buf + buf_len);
 453
 454         return (pos <= buf + buf_len) ? 0 : -1;
 455 }
 456
 457 int pb_protocol_serialise_boot_command(const struct boot_command *boot,
 458                 char *buf, int buf_len)
 459 {
 460         char *pos = buf;
 461
 462         pos += pb_protocol_serialise_string(pos, boot->option_id);
 463         pos += pb_protocol_serialise_string(pos, boot->boot_image_file);
 464         pos += pb_protocol_serialise_string(pos, boot->initrd_file);
 465         pos += pb_protocol_serialise_string(pos, boot->dtb_file);
 466         pos += pb_protocol_serialise_string(pos, boot->boot_args);
 467         pos += pb_protocol_serialise_string(pos, boot->args_sig_file);
 468         pos += pb_protocol_serialise_string(pos, boot->console);
 469
 470         assert(pos <= buf + buf_len);
 471
 472         return (pos <= buf + buf_len) ? 0 : -1;
 473 }
 474
 475 int pb_protocol_serialise_boot_status(const struct status *status,
 476                 char *buf, int buf_len)
 477 {
 478         char *pos = buf;
 479
 480         *(uint32_t *)pos = __cpu_to_be32(status->type);
 481         pos += sizeof(uint32_t);
 482
 483         pos += pb_protocol_serialise_string(pos, status->message);
 484
 485         *(bool *)pos = __cpu_to_be32(status->backlog);
 486         pos += sizeof(bool);
 487
 488         *(bool *)pos = __cpu_to_be32(status->boot_active);
 489         pos += sizeof(bool);
 490
 491         assert(pos <= buf + buf_len);
 492
 493         return (pos <= buf + buf_len) ? 0 : -1;
 494 }
 495
 496 int pb_protocol_serialise_system_info(const struct system_info *sysinfo,
 497                 char *buf, int buf_len)
 498 {
 499         char *pos = buf;
 500         unsigned int i;
 501
 502         pos += pb_protocol_serialise_string(pos, sysinfo->type);
 503         pos += pb_protocol_serialise_string(pos, sysinfo->identifier);
 504
 505         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_primary);
 506         pos += sizeof(uint32_t);
 507         for (i = 0; i < sysinfo->n_primary; i++)
 508                 pos += pb_protocol_serialise_string(pos, sysinfo->platform_primary[i]);
 509
 510         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_other);
 511         pos += sizeof(uint32_t);
 512         for (i = 0; i < sysinfo->n_other; i++)
 513                 pos += pb_protocol_serialise_string(pos, sysinfo->platform_other[i]);
 514
 515         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_bmc_current);
 516         pos += sizeof(uint32_t);
 517         for (i = 0; i < sysinfo->n_bmc_current; i++)
 518                 pos += pb_protocol_serialise_string(pos, sysinfo->bmc_current[i]);
 519
 520         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_bmc_golden);
 521         pos += sizeof(uint32_t);
 522         for (i = 0; i < sysinfo->n_bmc_golden; i++)
 523                 pos += pb_protocol_serialise_string(pos, sysinfo->bmc_golden[i]);
 524
 525         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_interfaces);
 526         pos += sizeof(uint32_t);
 527
 528         for (i = 0; i < sysinfo->n_interfaces; i++) {
 529                 struct interface_info *if_info = sysinfo->interfaces[i];
 530
 531                 *(uint32_t *)pos = __cpu_to_be32(if_info->hwaddr_size);
 532                 pos += sizeof(uint32_t);
 533
 534                 memcpy(pos, if_info->hwaddr, if_info->hwaddr_size);
 535                 pos += if_info->hwaddr_size;
 536
 537                 pos += pb_protocol_serialise_string(pos, if_info->name);
 538
 539                 *(bool *)pos = if_info->link;
 540                 pos += sizeof(bool);
 541
 542                 pos += pb_protocol_serialise_string(pos, if_info->address);
 543                 pos += pb_protocol_serialise_string(pos, if_info->address_v6);
 544         }
 545
 546         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_blockdevs);
 547         pos += sizeof(uint32_t);
 548
 549         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 550                 struct blockdev_info *bd_info = sysinfo->blockdevs[i];
 551
 552                 pos += pb_protocol_serialise_string(pos, bd_info->name);
 553                 pos += pb_protocol_serialise_string(pos, bd_info->uuid);
 554                 pos += pb_protocol_serialise_string(pos, bd_info->mountpoint);
 555         }
 556
 557         if (sysinfo->bmc_mac)
 558                 memcpy(pos, sysinfo->bmc_mac, HWADDR_SIZE);
 559         else
 560                 memset(pos, 0, HWADDR_SIZE);
 561         pos += HWADDR_SIZE;
 562
 563         assert(pos <= buf + buf_len);
 564
 565         return (pos <= buf + buf_len) ? 0 : -1;
 566 }
 567
 568 static int pb_protocol_serialise_config_interface(char *buf,
 569                 struct interface_config *conf)
 570 {
 571         char *pos = buf;
 572
 573         memcpy(pos, conf->hwaddr, sizeof(conf->hwaddr));
 574         pos += sizeof(conf->hwaddr);
 575
 576         *(uint32_t *)pos = conf->ignore;
 577         pos += 4;
 578
 579         if (conf->ignore)
 580                 return pos - buf;
 581
 582         *(uint32_t *)pos = __cpu_to_be32(conf->method);
 583         pos += 4;
 584
 585         if (conf->method == CONFIG_METHOD_STATIC) {
 586                 pos += pb_protocol_serialise_string(pos,
 587                                 conf->static_config.address);
 588                 pos += pb_protocol_serialise_string(pos,
 589                                 conf->static_config.gateway);
 590                 pos += pb_protocol_serialise_string(pos,
 591                                 conf->static_config.url);
 592         }
 593
 594         *(uint32_t *)pos = conf->override;
 595         pos += 4;
 596
 597         return pos - buf;
 598 }
 599
 600 int pb_protocol_serialise_config(const struct config *config,
 601                 char *buf, int buf_len)
 602 {
 603         char *pos = buf;
 604         unsigned int i;
 605
 606         *(uint32_t *)pos = config->autoboot_enabled;
 607         pos += 4;
 608
 609         *(uint32_t *)pos = __cpu_to_be32(config->autoboot_timeout_sec);
 610         pos += 4;
 611
 612         *(uint32_t *)pos = config->safe_mode;
 613         pos += 4;
 614
 615         *(uint32_t *)pos = __cpu_to_be32(config->network.n_interfaces);
 616         pos += 4;
 617         for (i = 0; i < config->network.n_interfaces; i++) {
 618                 struct interface_config *iface =
 619                         config->network.interfaces[i];
 620                 pos += pb_protocol_serialise_config_interface(pos, iface);
 621         }
 622
 623         *(uint32_t *)pos = __cpu_to_be32(config->network.n_dns_servers);
 624         pos += 4;
 625         for (i = 0; i < config->network.n_dns_servers; i++) {
 626                 pos += pb_protocol_serialise_string(pos,
 627                                 config->network.dns_servers[i]);
 628         }
 629
 630         pos += pb_protocol_serialise_string(pos, config->http_proxy);
 631         pos += pb_protocol_serialise_string(pos, config->https_proxy);
 632
 633         *(uint32_t *)pos = __cpu_to_be32(config->n_autoboot_opts);
 634         pos += 4;
 635         for (i = 0; i < config->n_autoboot_opts; i++) {
 636                 *(uint32_t *)pos =
 637                         __cpu_to_be32(config->autoboot_opts[i].boot_type);
 638                 pos += 4;
 639                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE) {
 640                         *(uint32_t *)pos =
 641                                 __cpu_to_be32(config->autoboot_opts[i].type);
 642                         pos += 4;
 643                 } else {
 644                         pos += pb_protocol_serialise_string(pos,
 645                                                 config->autoboot_opts[i].uuid);
 646                 }
 647         }
 648
 649         *(uint32_t *)pos = __cpu_to_be32(config->ipmi_bootdev);
 650         pos += 4;
 651         *(uint32_t *)pos = config->ipmi_bootdev_persistent;
 652         pos += 4;
 653         *(uint32_t *)pos = config->ipmi_bootdev_mailbox;
 654         pos += 4;
 655
 656         *(uint32_t *)pos = config->allow_writes;
 657         pos += 4;
 658
 659         *(uint32_t *)pos = __cpu_to_be32(config->n_consoles);
 660         pos += 4;
 661         for (i = 0; i < config->n_consoles; i++)
 662                 pos += pb_protocol_serialise_string(pos, config->consoles[i]);
 663
 664         pos += pb_protocol_serialise_string(pos, config->boot_console);
 665         *(uint32_t *)pos = config->manual_console;
 666         pos += 4;
 667
 668         pos += pb_protocol_serialise_string(pos, config->lang);
 669
 670         assert(pos <= buf + buf_len);
 671
 672         return (pos <= buf + buf_len) ? 0 : -1;
 673 }
 674
 675 int pb_protocol_serialise_url(const char *url, char *buf, int buf_len)
 676 {
 677         char *pos = buf;
 678
 679         pos += pb_protocol_serialise_string(pos, url);
 680
 681         assert(pos <=buf+buf_len);
 682
 683         return (pos <= buf + buf_len) ? 0 : -1;
 684 }
 685
 686 int pb_protocol_serialise_plugin_option(const struct plugin_option *opt,
 687                 char *buf, int buf_len)
 688 {
 689         char *pos = buf;
 690         unsigned int i;
 691
 692         pos += pb_protocol_serialise_string(pos, opt->id);
 693         pos += pb_protocol_serialise_string(pos, opt->name);
 694         pos += pb_protocol_serialise_string(pos, opt->vendor);
 695         pos += pb_protocol_serialise_string(pos, opt->vendor_id);
 696         pos += pb_protocol_serialise_string(pos, opt->version);
 697         pos += pb_protocol_serialise_string(pos, opt->date);
 698         pos += pb_protocol_serialise_string(pos, opt->plugin_file);
 699
 700         *(uint32_t *)pos = __cpu_to_be32(opt->n_executables);
 701         pos += 4;
 702
 703         for (i = 0; i < opt->n_executables; i++)
 704                 pos += pb_protocol_serialise_string(pos, opt->executables[i]);
 705
 706         assert(pos <= buf + buf_len);
 707
 708         return (pos <= buf + buf_len) ? 0 : -1;
 709 }
 710
 711 int pb_protocol_serialise_temp_autoboot(const struct autoboot_option *opt,
 712                 char *buf, int buf_len)
 713 {
 714         char *pos = buf;
 715
 716         *(uint32_t *)pos = __cpu_to_be32(opt->boot_type);
 717         pos += 4;
 718
 719         if (opt->boot_type == BOOT_DEVICE_TYPE) {
 720                 *(uint32_t *)pos = __cpu_to_be32(opt->type);
 721                 pos += 4;
 722         } else {
 723                 pos += pb_protocol_serialise_string(pos, opt->uuid);
 724         }
 725
 726         assert(pos <= buf + buf_len);
 727
 728         return (pos <= buf + buf_len) ? 0 : -1;
 729 }
 730
 731 int pb_protocol_serialise_authenticate(struct auth_message *msg,
 732                 char *buf, int buf_len)
 733 {
 734         char *pos = buf;
 735
 736         *(enum auth_msg_type *)pos = msg->op;
 737         pos += sizeof(enum auth_msg_type);
 738
 739         switch(msg->op) {
 740         case AUTH_MSG_REQUEST:
 741                 pos += pb_protocol_serialise_string(pos, msg->password);
 742                 break;
 743         case AUTH_MSG_RESPONSE:
 744                 *(bool *)pos = msg->authenticated;
 745                 pos += sizeof(bool);
 746                 break;
 747         case AUTH_MSG_SET:
 748                 pos += pb_protocol_serialise_string(pos,
 749                                 msg->set_password.password);
 750                 pos += pb_protocol_serialise_string(pos,
 751                                 msg->set_password.new_password);
 752                 break;
 753         case AUTH_MSG_DECRYPT:
 754                 pos += pb_protocol_serialise_string(pos,
 755                                 msg->decrypt_dev.password);
 756                 pos += pb_protocol_serialise_string(pos,
 757                                 msg->decrypt_dev.device_id);
 758                 break;
 759         default:
 760                 pb_log("%s: invalid msg\n", __func__);
 761                 return -1;
 762         };
 763
 764         assert(pos <= buf + buf_len);
 765
 766         return (pos <= buf + buf_len) ? 0 : -1;
 767 }
 768
 769 int pb_protocol_write_message(int fd, struct pb_protocol_message *message)
 770 {
 771         int total_len, rc;
 772         char *pos;
 773
 774         total_len = sizeof(*message) + message->payload_len;
 775
 776         message->payload_len = __cpu_to_be32(message->payload_len);
 777         message->action = __cpu_to_be32(message->action);
 778
 779         for (pos = (void *)message; total_len;) {
 780                 rc = write(fd, pos, total_len);
 781
 782                 if (rc <= 0)
 783                         break;
 784
 785                 total_len -= rc;
 786                 pos += rc;
 787         }
 788
 789         talloc_free(message);
 790
 791         if (!total_len)
 792                 return 0;
 793
 794         pb_log_fn("failed: %s\n", strerror(errno));
 795         return -1;
 796 }
 797
 798 struct pb_protocol_message *pb_protocol_create_message(void *ctx,
 799                 enum pb_protocol_action action, int payload_len)
 800 {
 801         struct pb_protocol_message *message;
 802
 803         if (payload_len > PB_PROTOCOL_MAX_PAYLOAD_SIZE) {
 804                 pb_log_fn("payload too big %u/%u\n", payload_len,
 805                         PB_PROTOCOL_MAX_PAYLOAD_SIZE);
 806                 return NULL;
 807         }
 808
 809         message = talloc_size(ctx, sizeof(*message) + payload_len);
 810
 811         /* we convert these to big-endian in write_message() */
 812         message->action = action;
 813         message->payload_len = payload_len;
 814
 815         return message;
 816
 817 }
 818
 819 struct pb_protocol_message *pb_protocol_read_message(void *ctx, int fd)
 820 {
 821         struct pb_protocol_message *message, m;
 822         int rc;
 823         unsigned int len;
 824
 825         /* use the stack for the initial 8-byte read */
 826
 827         rc = read(fd, &m, sizeof(m));
 828         if (rc != sizeof(m))
 829                 return NULL;
 830
 831         m.payload_len = __be32_to_cpu(m.payload_len);
 832         m.action = __be32_to_cpu(m.action);
 833
 834         if (m.payload_len > PB_PROTOCOL_MAX_PAYLOAD_SIZE) {
 835                 pb_log_fn("payload too big %u/%u\n", m.payload_len,
 836                         PB_PROTOCOL_MAX_PAYLOAD_SIZE);
 837                 return NULL;
 838         }
 839
 840         message = talloc_size(ctx, sizeof(m) + m.payload_len);
 841         memcpy(message, &m, sizeof(m));
 842
 843         for (len = 0; len < m.payload_len;) {
 844                 rc = read(fd, message->payload + len, m.payload_len - len);
 845
 846                 if (rc <= 0) {
 847                         talloc_free(message);
 848                         pb_log_fn("failed (%u): %s\n", len,
 849                                 strerror(errno));
 850                         return NULL;
 851                 }
 852
 853                 len += rc;
 854         }
 855
 856         return message;
 857 }
 858
 859
 860 int pb_protocol_deserialise_device(struct device *dev,
 861                 const struct pb_protocol_message *message)
 862 {
 863         unsigned int len;
 864         const char *pos;
 865         int rc = -1;
 866
 867         len = message->payload_len;
 868         pos = message->payload;
 869
 870         if (read_string(dev, &pos, &len, &dev->id))
 871                 goto out;
 872
 873         if (len < sizeof(enum device_type))
 874                 goto out;
 875         dev->type = *(enum device_type *)(pos);
 876         pos += sizeof(enum device_type);
 877         len -= sizeof(enum device_type);
 878
 879         if (read_string(dev, &pos, &len, &dev->name))
 880                 goto out;
 881
 882         if (read_string(dev, &pos, &len, &dev->description))
 883                 goto out;
 884
 885         if (read_string(dev, &pos, &len, &dev->icon_file))
 886                 goto out;
 887
 888         rc = 0;
 889
 890 out:
 891         return rc;
 892 }
 893
 894 int pb_protocol_deserialise_boot_option(struct boot_option *opt,
 895                 const struct pb_protocol_message *message)
 896 {
 897         unsigned int len;
 898         const char *pos;
 899         int rc = -1;
 900
 901         len = message->payload_len;
 902         pos = message->payload;
 903
 904         if (read_string(opt, &pos, &len, &opt->device_id))
 905                 goto out;
 906
 907         if (read_string(opt, &pos, &len, &opt->id))
 908                 goto out;
 909
 910         if (read_string(opt, &pos, &len, &opt->name))
 911                 goto out;
 912
 913         if (read_string(opt, &pos, &len, &opt->description))
 914                 goto out;
 915
 916         if (read_string(opt, &pos, &len, &opt->icon_file))
 917                 goto out;
 918
 919         if (read_string(opt, &pos, &len, &opt->boot_image_file))
 920                 goto out;
 921
 922         if (read_string(opt, &pos, &len, &opt->initrd_file))
 923                 goto out;
 924
 925         if (read_string(opt, &pos, &len, &opt->dtb_file))
 926                 goto out;
 927
 928         if (read_string(opt, &pos, &len, &opt->boot_args))
 929                 goto out;
 930
 931         if (read_string(opt, &pos, &len, &opt->args_sig_file))
 932                 goto out;
 933
 934         if (len < sizeof(bool))
 935                 goto out;
 936         opt->is_default = *(bool *)(pos);
 937         pos += sizeof(bool);
 938         len -= sizeof(bool);
 939         opt->is_autoboot_default = *(bool *)(pos);
 940         pos += sizeof(bool);
 941         len -= sizeof(bool);
 942
 943         if (read_u32(&pos, &len, &opt->type))
 944                 return -1;
 945
 946         rc = (pos <= message->payload + message->payload_len) ? 0 : -1;
 947
 948 out:
 949         return rc;
 950 }
 951
 952 int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
 953                 const struct pb_protocol_message *message)
 954 {
 955         unsigned int len;
 956         const char *pos;
 957         int rc = -1;
 958
 959         len = message->payload_len;
 960         pos = message->payload;
 961
 962         if (read_string(cmd, &pos, &len, &cmd->option_id))
 963                 goto out;
 964
 965         if (read_string(cmd, &pos, &len, &cmd->boot_image_file))
 966                 goto out;
 967
 968         if (read_string(cmd, &pos, &len, &cmd->initrd_file))
 969                 goto out;
 970
 971         if (read_string(cmd, &pos, &len, &cmd->dtb_file))
 972                 goto out;
 973
 974         if (read_string(cmd, &pos, &len, &cmd->boot_args))
 975                 goto out;
 976
 977         if (read_string(cmd, &pos, &len, &cmd->args_sig_file))
 978                 goto out;
 979
 980         if (read_string(cmd, &pos, &len, &cmd->console))
 981                 goto out;
 982
 983         rc = 0;
 984
 985 out:
 986         return rc;
 987 }
 988
 989 int pb_protocol_deserialise_boot_status(struct status *status,
 990                 const struct pb_protocol_message *message)
 991 {
 992         unsigned int len;
 993         const char *pos;
 994         int rc = -1;
 995
 996         len = message->payload_len;
 997         pos = message->payload;
 998
 999         /* first up, the type enum... */
1000         if (len < sizeof(uint32_t))
1001                 goto out;
1002
1003         status->type = __be32_to_cpu(*(uint32_t *)(pos));
1004
1005         switch (status->type) {
1006         case STATUS_ERROR:
1007         case STATUS_INFO:
1008                 break;
1009         default:
1010                 goto out;
1011         }
1012
1013         pos += sizeof(uint32_t);
1014         len -= sizeof(uint32_t);
1015
1016         /* message string */
1017         if (read_string(status, &pos, &len, &status->message))
1018                 goto out;
1019
1020         /* backlog */
1021         status->backlog = *(bool *)pos;
1022         pos += sizeof(status->backlog);
1023
1024         /* boot_active */
1025         status->boot_active = *(bool *)pos;
1026         pos += sizeof(status->boot_active);
1027
1028         rc = 0;
1029
1030 out:
1031         return rc;
1032 }
1033
1034 int pb_protocol_deserialise_system_info(struct system_info *sysinfo,
1035                 const struct pb_protocol_message *message)
1036 {
1037         unsigned int len, i;
1038         const char *pos;
1039         int rc = -1;
1040         char *tmp;
1041
1042         len = message->payload_len;
1043         pos = message->payload;
1044
1045         /* type and identifier strings */
1046         if (read_string(sysinfo, &pos, &len, &sysinfo->type))
1047                 goto out;
1048
1049         if (read_string(sysinfo, &pos, &len, &sysinfo->identifier))
1050                 goto out;
1051
1052         /* Platform version strings for openpower platforms */
1053         if (read_u32(&pos, &len, &sysinfo->n_primary))
1054                 goto out;
1055         sysinfo->platform_primary = talloc_array(sysinfo, char *,
1056                                                 sysinfo->n_primary);
1057         for (i = 0; i < sysinfo->n_primary; i++) {
1058                 if (read_string(sysinfo, &pos, &len, &tmp))
1059                         goto out;
1060                 sysinfo->platform_primary[i] = talloc_strdup(sysinfo, tmp);
1061         }
1062
1063         if (read_u32(&pos, &len, &sysinfo->n_other))
1064                 goto out;
1065         sysinfo->platform_other = talloc_array(sysinfo, char *,
1066                                                 sysinfo->n_other);
1067         for (i = 0; i < sysinfo->n_other; i++) {
1068                 if (read_string(sysinfo, &pos, &len, &tmp))
1069                         goto out;
1070                 sysinfo->platform_other[i] = talloc_strdup(sysinfo, tmp);
1071         }
1072
1073         /* BMC version strings for openpower platforms */
1074         if (read_u32(&pos, &len, &sysinfo->n_bmc_current))
1075                 goto out;
1076         sysinfo->bmc_current = talloc_array(sysinfo, char *,
1077                                                 sysinfo->n_bmc_current);
1078         for (i = 0; i < sysinfo->n_bmc_current; i++) {
1079                 if (read_string(sysinfo, &pos, &len, &tmp))
1080                         goto out;
1081                 sysinfo->bmc_current[i] = talloc_strdup(sysinfo, tmp);
1082         }
1083
1084         if (read_u32(&pos, &len, &sysinfo->n_bmc_golden))
1085                 goto out;
1086         sysinfo->bmc_golden = talloc_array(sysinfo, char *,
1087                                                 sysinfo->n_bmc_golden);
1088         for (i = 0; i < sysinfo->n_bmc_golden; i++) {
1089                 if (read_string(sysinfo, &pos, &len, &tmp))
1090                         goto out;
1091                 sysinfo->bmc_golden[i] = talloc_strdup(sysinfo, tmp);
1092         }
1093
1094         /* number of interfaces */
1095         if (read_u32(&pos, &len, &sysinfo->n_interfaces))
1096                 goto out;
1097
1098         sysinfo->interfaces = talloc_array(sysinfo, struct interface_info *,
1099                         sysinfo->n_interfaces);
1100
1101         for (i = 0; i < sysinfo->n_interfaces; i++) {
1102                 struct interface_info *if_info = talloc(sysinfo,
1103                                                         struct interface_info);
1104
1105                 if (read_u32(&pos, &len, &if_info->hwaddr_size))
1106                         goto out;
1107
1108                 if (len < if_info->hwaddr_size)
1109                         goto out;
1110
1111                 if_info->hwaddr = talloc_memdup(if_info, pos,
1112                                                 if_info->hwaddr_size);
1113                 pos += if_info->hwaddr_size;
1114                 len -= if_info->hwaddr_size;
1115
1116                 if (read_string(if_info, &pos, &len, &if_info->name))
1117                         goto out;
1118
1119                 if_info->link = *(bool *)pos;
1120                 pos += sizeof(if_info->link);
1121
1122                 if (read_string(if_info, &pos, &len, &if_info->address))
1123                         goto out;
1124                 if (read_string(if_info, &pos, &len, &if_info->address_v6))
1125                         goto out;
1126
1127                 sysinfo->interfaces[i] = if_info;
1128         }
1129
1130         /* number of interfaces */
1131         if (read_u32(&pos, &len, &sysinfo->n_blockdevs))
1132                 goto out;
1133
1134         sysinfo->blockdevs = talloc_array(sysinfo, struct blockdev_info *,
1135                         sysinfo->n_blockdevs);
1136
1137         for (i = 0; i < sysinfo->n_blockdevs; i++) {
1138                 struct blockdev_info *bd_info = talloc(sysinfo,
1139                                                         struct blockdev_info);
1140
1141                 if (read_string(bd_info, &pos, &len, &bd_info->name))
1142                         goto out;
1143
1144                 if (read_string(bd_info, &pos, &len, &bd_info->uuid))
1145                         goto out;
1146
1147                 if (read_string(bd_info, &pos, &len, &bd_info->mountpoint))
1148                         goto out;
1149
1150                 sysinfo->blockdevs[i] = bd_info;
1151         }
1152
1153         for (i = 0; i < HWADDR_SIZE; i++) {
1154                 if (pos[i] != 0) {
1155                         sysinfo->bmc_mac = talloc_memdup(sysinfo, pos, HWADDR_SIZE);
1156                         break;
1157                 }
1158         }
1159
1160         pos += HWADDR_SIZE;
1161         len -= HWADDR_SIZE;
1162
1163         rc = 0;
1164 out:
1165         return rc;
1166 }
1167
1168 static int pb_protocol_deserialise_config_interface(const char **buf,
1169                 unsigned int *len, struct interface_config *iface)
1170 {
1171         unsigned int tmp;
1172
1173         if (*len < sizeof(iface->hwaddr))
1174                 return -1;
1175
1176         memcpy(iface->hwaddr, *buf, sizeof(iface->hwaddr));
1177         *buf += sizeof(iface->hwaddr);
1178         *len -= sizeof(iface->hwaddr);
1179
1180         if (read_u32(buf, len, &tmp))
1181                 return -1;
1182         iface->ignore = !!tmp;
1183
1184         if (iface->ignore)
1185                 return 0;
1186
1187         if (read_u32(buf, len, &iface->method))
1188                 return -1;
1189
1190         if (iface->method == CONFIG_METHOD_STATIC) {
1191                 if (read_string(iface, buf, len, &iface->static_config.address))
1192                         return -1;
1193
1194                 if (read_string(iface, buf, len, &iface->static_config.gateway))
1195                         return -1;
1196
1197                 if (read_string(iface, buf, len, &iface->static_config.url))
1198                         return -1;
1199         }
1200
1201         if (read_u32(buf, len, &tmp))
1202                 return -1;
1203         iface->override = !!tmp;
1204
1205         return 0;
1206 }
1207
1208 int pb_protocol_deserialise_config(struct config *config,
1209                 const struct pb_protocol_message *message)
1210 {
1211         unsigned int len, i, tmp;
1212         const char *pos;
1213         int rc = -1;
1214         char *str;
1215
1216         len = message->payload_len;
1217         pos = message->payload;
1218
1219         if (read_u32(&pos, &len, &tmp))
1220                 goto out;
1221         config->autoboot_enabled = !!tmp;
1222
1223         if (read_u32(&pos, &len, &config->autoboot_timeout_sec))
1224                 goto out;
1225
1226         if (read_u32(&pos, &len, &tmp))
1227                 goto out;
1228         config->safe_mode = !!tmp;
1229
1230         if (read_u32(&pos, &len, &config->network.n_interfaces))
1231                 goto out;
1232
1233         config->network.interfaces = talloc_array(config,
1234                         struct interface_config *, config->network.n_interfaces);
1235
1236         for (i = 0; i < config->network.n_interfaces; i++) {
1237                 struct interface_config *iface = talloc_zero(
1238                                 config->network.interfaces,
1239                                 struct interface_config);
1240                 if (pb_protocol_deserialise_config_interface(&pos, &len, iface))
1241                         goto out;
1242                 config->network.interfaces[i] = iface;
1243         }
1244
1245         if (read_u32(&pos, &len, &config->network.n_dns_servers))
1246                 goto out;
1247         config->network.dns_servers = talloc_array(config, const char *,
1248                         config->network.n_dns_servers);
1249
1250         for (i = 0; i < config->network.n_dns_servers; i++) {
1251                 if (read_string(config->network.dns_servers, &pos, &len, &str))
1252                         goto out;
1253                 config->network.dns_servers[i] = str;
1254         }
1255
1256         if (read_string(config, &pos, &len, &str))
1257                 goto out;
1258         config->http_proxy = str;
1259         if (read_string(config, &pos, &len, &str))
1260                 goto out;
1261         config->https_proxy = str;
1262
1263         if (read_u32(&pos, &len, &config->n_autoboot_opts))
1264                 goto out;
1265         config->autoboot_opts = talloc_array(config, struct autoboot_option,
1266                         config->n_autoboot_opts);
1267
1268         for (i = 0; i < config->n_autoboot_opts; i++) {
1269                 if (read_u32(&pos, &len, &tmp))
1270                         goto out;
1271                 config->autoboot_opts[i].boot_type = (int)tmp;
1272                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE) {
1273                         if (read_u32(&pos, &len, &tmp))
1274                                 goto out;
1275                         config->autoboot_opts[i].type = tmp;
1276                 } else {
1277                         if (read_string(config, &pos, &len, &str))
1278                                 goto out;
1279                         config->autoboot_opts[i].uuid = str;
1280                 }
1281         }
1282
1283         if (read_u32(&pos, &len, &config->ipmi_bootdev))
1284                 goto out;
1285         if (read_u32(&pos, &len, &tmp))
1286                 goto out;
1287         config->ipmi_bootdev_persistent = !!tmp;
1288         if (read_u32(&pos, &len, &tmp))
1289                 goto out;
1290         config->ipmi_bootdev_mailbox = !!tmp;
1291
1292         if (read_u32(&pos, &len, &tmp))
1293                 goto out;
1294         config->allow_writes = !!tmp;
1295
1296         if (read_u32(&pos, &len, &config->n_consoles))
1297                 goto out;
1298
1299         config->consoles = talloc_array(config, char *, config->n_consoles);
1300         for (i = 0; i < config->n_consoles; i++) {
1301                 if (read_string(config->consoles, &pos, &len, &str))
1302                         goto out;
1303                 config->consoles[i] = str;
1304         }
1305
1306         if (read_string(config, &pos, &len, &str))
1307                 goto out;
1308
1309         config->boot_console = str;
1310
1311         if (read_u32(&pos, &len, &tmp))
1312                 goto out;
1313         config->manual_console = !!tmp;
1314
1315         if (read_string(config, &pos, &len, &str))
1316                 goto out;
1317
1318         config->lang = str;
1319
1320         rc = 0;
1321
1322 out:
1323         return rc;
1324 }
1325
1326 int pb_protocol_deserialise_plugin_option(struct plugin_option *opt,
1327                 const struct pb_protocol_message *message)
1328 {
1329         unsigned int len, i, tmp;
1330         const char *pos;
1331         int rc = -1;
1332         char *str;
1333
1334         len = message->payload_len;
1335         pos = message->payload;
1336
1337         if (read_string(opt, &pos, &len, &str))
1338                 goto out;
1339         opt->id = str;
1340
1341         if (read_string(opt, &pos, &len, &str))
1342                 goto out;
1343         opt->name = str;
1344
1345         if (read_string(opt, &pos, &len, &str))
1346                 goto out;
1347         opt->vendor = str;
1348
1349         if (read_string(opt, &pos, &len, &str))
1350                 goto out;
1351         opt->vendor_id = str;
1352
1353         if (read_string(opt, &pos, &len, &str))
1354                 goto out;
1355         opt->version = str;
1356
1357         if (read_string(opt, &pos, &len, &str))
1358                 goto out;
1359         opt->date = str;
1360
1361         if (read_string(opt, &pos, &len, &str))
1362                 goto out;
1363         opt->plugin_file = str;
1364
1365         if (read_u32(&pos, &len, &tmp))
1366                 goto out;
1367         opt->n_executables = tmp;
1368
1369         opt->executables = talloc_zero_array(opt, char *, opt->n_executables);
1370         if (!opt->executables)
1371                 goto out;
1372
1373         for (i = 0; i < opt->n_executables; i++) {
1374                 if (read_string(opt, &pos, &len, &str))
1375                         goto out;
1376                 opt->executables[i] = talloc_strdup(opt, str);
1377         }
1378
1379         rc = 0;
1380 out:
1381         return rc;
1382 }
1383
1384 int pb_protocol_deserialise_temp_autoboot(struct autoboot_option *opt,
1385                 const struct pb_protocol_message *message)
1386 {
1387         unsigned int len, tmp;
1388         const char *pos;
1389         int rc = -1;
1390         char *str;
1391
1392         len = message->payload_len;
1393         pos = message->payload;
1394
1395         if (read_u32(&pos, &len, &tmp))
1396                 goto out;
1397
1398         opt->boot_type = tmp;
1399         if (opt->boot_type == BOOT_DEVICE_TYPE) {
1400                 if (read_u32(&pos, &len, &tmp))
1401                         goto out;
1402                 opt->type = tmp;
1403
1404         } else if (opt->boot_type == BOOT_DEVICE_UUID) {
1405                 if (read_string(opt, &pos, &len, &str))
1406                         goto out;
1407                 opt->uuid = str;
1408
1409         } else {
1410                 return -1;
1411         }
1412
1413         rc = 0;
1414
1415 out:
1416         return rc;
1417 }
1418
1419 int pb_protocol_deserialise_authenticate(struct auth_message *msg,
1420                 const struct pb_protocol_message *message)
1421 {
1422         unsigned int len;
1423         const char *pos;
1424
1425         len = message->payload_len;
1426         pos = message->payload;
1427
1428         msg->op = *(enum auth_msg_type *)pos;
1429         pos += sizeof(enum auth_msg_type);
1430
1431         switch (msg->op) {
1432         case AUTH_MSG_REQUEST:
1433                 if (read_string(msg, &pos, &len, &msg->password))
1434                         return -1;
1435                 break;
1436         case AUTH_MSG_RESPONSE:
1437                 msg->authenticated = *(bool *)pos;
1438                 pos += sizeof(bool);
1439                 break;
1440         case AUTH_MSG_SET:
1441                 if (read_string(msg, &pos, &len, &msg->set_password.password))
1442                         return -1;
1443                 if (read_string(msg, &pos, &len,
1444                                         &msg->set_password.new_password))
1445                         return -1;
1446                 break;
1447         case AUTH_MSG_DECRYPT:
1448                 if (read_string(msg, &pos, &len, &msg->decrypt_dev.password))
1449                         return -1;
1450                 if (read_string(msg, &pos, &len,
1451                                         &msg->decrypt_dev.device_id))
1452                         return -1;
1453                 break;
1454         default:
1455                 pb_log("%s: unable to parse\n", __func__);
1456                 return -1;
1457         }
1458
1459         return 0;
1460 }