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