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
 328         len += 4; /* allow_writes */
 329
 330         len += 4; /* n_consoles */
 331         for (i = 0; i < config->n_consoles; i++)
 332                 len += 4 + optional_strlen(config->consoles[i]);
 333
 334         len += 4 + optional_strlen(config->boot_console);
 335         len += 4; /* manual_console */
 336
 337         len += 4 + optional_strlen(config->lang);
 338
 339         return len;
 340 }
 341
 342 int pb_protocol_url_len(const char *url)
 343 {
 344         /* url + length field */
 345         return 4 + optional_strlen(url);
 346 }
 347
 348
 349 int pb_protocol_plugin_option_len(const struct plugin_option *opt)
 350 {
 351         unsigned int i, len = 0;
 352
 353         len += 4 + optional_strlen(opt->id);
 354         len += 4 + optional_strlen(opt->name);
 355         len += 4 + optional_strlen(opt->vendor);
 356         len += 4 + optional_strlen(opt->vendor_id);
 357         len += 4 + optional_strlen(opt->version);
 358         len += 4 + optional_strlen(opt->date);
 359         len += 4 + optional_strlen(opt->plugin_file);
 360
 361         len += 4; /* n_executables */
 362         for (i = 0; i < opt->n_executables; i++)
 363                 len += 4 + optional_strlen(opt->executables[i]);
 364
 365         return len;
 366 }
 367
 368 int pb_protocol_temp_autoboot_len(const struct autoboot_option *opt)
 369 {
 370         unsigned int len = 0;
 371
 372         /* boot_type */
 373         len += 4;
 374
 375         if (opt->boot_type == BOOT_DEVICE_TYPE)
 376                 len += 4;
 377         else
 378                 len += optional_strlen(opt->uuid);
 379
 380         return len;
 381 }
 382
 383 int pb_protocol_authenticate_len(struct auth_message *msg)
 384 {
 385         switch (msg->op) {
 386         case AUTH_MSG_REQUEST:
 387                 /* enum + password + length */
 388                 return 4 + 4 + optional_strlen(msg->password);
 389         case AUTH_MSG_RESPONSE:
 390                 /* enum + bool */
 391                 return 4 + 4;
 392         case AUTH_MSG_SET:
 393                 /* enum + password + password */
 394                 return 4 + 4 + optional_strlen(msg->set_password.password) +
 395                         4 + optional_strlen(msg->set_password.new_password);
 396         default:
 397                 pb_log("%s: invalid input\n", __func__);
 398                 return 0;
 399         }
 400 }
 401
 402 int pb_protocol_serialise_device(const struct device *dev,
 403                 char *buf, int buf_len)
 404 {
 405         char *pos = buf;
 406
 407         pos += pb_protocol_serialise_string(pos, dev->id);
 408         *(enum device_type *)pos = dev->type;
 409         pos += sizeof(enum device_type);
 410         pos += pb_protocol_serialise_string(pos, dev->name);
 411         pos += pb_protocol_serialise_string(pos, dev->description);
 412         pos += pb_protocol_serialise_string(pos, dev->icon_file);
 413
 414         assert(pos <= buf + buf_len);
 415         (void)buf_len;
 416
 417         return 0;
 418 }
 419
 420 int pb_protocol_serialise_boot_option(const struct boot_option *opt,
 421                 char *buf, int buf_len)
 422 {
 423         char *pos = buf;
 424
 425         pos += pb_protocol_serialise_string(pos, opt->device_id);
 426         pos += pb_protocol_serialise_string(pos, opt->id);
 427         pos += pb_protocol_serialise_string(pos, opt->name);
 428         pos += pb_protocol_serialise_string(pos, opt->description);
 429         pos += pb_protocol_serialise_string(pos, opt->icon_file);
 430         pos += pb_protocol_serialise_string(pos, opt->boot_image_file);
 431         pos += pb_protocol_serialise_string(pos, opt->initrd_file);
 432         pos += pb_protocol_serialise_string(pos, opt->dtb_file);
 433         pos += pb_protocol_serialise_string(pos, opt->boot_args);
 434         pos += pb_protocol_serialise_string(pos, opt->args_sig_file);
 435
 436         *(bool *)pos = opt->is_default;
 437         pos += sizeof(bool);
 438         *(bool *)pos = opt->is_autoboot_default;
 439         pos += sizeof(bool);
 440
 441         *(uint32_t *)pos = __cpu_to_be32(opt->type);
 442         pos += 4;
 443
 444         assert(pos <= buf + buf_len);
 445         (void)buf_len;
 446
 447         return 0;
 448 }
 449
 450 int pb_protocol_serialise_boot_command(const struct boot_command *boot,
 451                 char *buf, int buf_len)
 452 {
 453         char *pos = buf;
 454
 455         pos += pb_protocol_serialise_string(pos, boot->option_id);
 456         pos += pb_protocol_serialise_string(pos, boot->boot_image_file);
 457         pos += pb_protocol_serialise_string(pos, boot->initrd_file);
 458         pos += pb_protocol_serialise_string(pos, boot->dtb_file);
 459         pos += pb_protocol_serialise_string(pos, boot->boot_args);
 460         pos += pb_protocol_serialise_string(pos, boot->args_sig_file);
 461         pos += pb_protocol_serialise_string(pos, boot->console);
 462
 463         assert(pos <= buf + buf_len);
 464         (void)buf_len;
 465
 466         return 0;
 467 }
 468
 469 int pb_protocol_serialise_boot_status(const struct status *status,
 470                 char *buf, int buf_len)
 471 {
 472         char *pos = buf;
 473
 474         *(uint32_t *)pos = __cpu_to_be32(status->type);
 475         pos += sizeof(uint32_t);
 476
 477         pos += pb_protocol_serialise_string(pos, status->message);
 478
 479         *(bool *)pos = __cpu_to_be32(status->backlog);
 480         pos += sizeof(bool);
 481
 482         *(bool *)pos = __cpu_to_be32(status->boot_active);
 483         pos += sizeof(bool);
 484
 485         assert(pos <= buf + buf_len);
 486         (void)buf_len;
 487
 488         return 0;
 489 }
 490
 491 int pb_protocol_serialise_system_info(const struct system_info *sysinfo,
 492                 char *buf, int buf_len)
 493 {
 494         char *pos = buf;
 495         unsigned int i;
 496
 497         pos += pb_protocol_serialise_string(pos, sysinfo->type);
 498         pos += pb_protocol_serialise_string(pos, sysinfo->identifier);
 499
 500         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_primary);
 501         pos += sizeof(uint32_t);
 502         for (i = 0; i < sysinfo->n_primary; i++)
 503                 pos += pb_protocol_serialise_string(pos, sysinfo->platform_primary[i]);
 504
 505         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_other);
 506         pos += sizeof(uint32_t);
 507         for (i = 0; i < sysinfo->n_other; i++)
 508                 pos += pb_protocol_serialise_string(pos, sysinfo->platform_other[i]);
 509
 510         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_bmc_current);
 511         pos += sizeof(uint32_t);
 512         for (i = 0; i < sysinfo->n_bmc_current; i++)
 513                 pos += pb_protocol_serialise_string(pos, sysinfo->bmc_current[i]);
 514
 515         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_bmc_golden);
 516         pos += sizeof(uint32_t);
 517         for (i = 0; i < sysinfo->n_bmc_golden; i++)
 518                 pos += pb_protocol_serialise_string(pos, sysinfo->bmc_golden[i]);
 519
 520         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_interfaces);
 521         pos += sizeof(uint32_t);
 522
 523         for (i = 0; i < sysinfo->n_interfaces; i++) {
 524                 struct interface_info *if_info = sysinfo->interfaces[i];
 525
 526                 *(uint32_t *)pos = __cpu_to_be32(if_info->hwaddr_size);
 527                 pos += sizeof(uint32_t);
 528
 529                 memcpy(pos, if_info->hwaddr, if_info->hwaddr_size);
 530                 pos += if_info->hwaddr_size;
 531
 532                 pos += pb_protocol_serialise_string(pos, if_info->name);
 533
 534                 *(bool *)pos = if_info->link;
 535                 pos += sizeof(bool);
 536
 537                 pos += pb_protocol_serialise_string(pos, if_info->address);
 538                 pos += pb_protocol_serialise_string(pos, if_info->address_v6);
 539         }
 540
 541         *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_blockdevs);
 542         pos += sizeof(uint32_t);
 543
 544         for (i = 0; i < sysinfo->n_blockdevs; i++) {
 545                 struct blockdev_info *bd_info = sysinfo->blockdevs[i];
 546
 547                 pos += pb_protocol_serialise_string(pos, bd_info->name);
 548                 pos += pb_protocol_serialise_string(pos, bd_info->uuid);
 549                 pos += pb_protocol_serialise_string(pos, bd_info->mountpoint);
 550         }
 551
 552         if (sysinfo->bmc_mac)
 553                 memcpy(pos, sysinfo->bmc_mac, HWADDR_SIZE);
 554         else
 555                 memset(pos, 0, HWADDR_SIZE);
 556         pos += HWADDR_SIZE;
 557
 558         assert(pos <= buf + buf_len);
 559         (void)buf_len;
 560
 561         return 0;
 562 }
 563
 564 static int pb_protocol_serialise_config_interface(char *buf,
 565                 struct interface_config *conf)
 566 {
 567         char *pos = buf;
 568
 569         memcpy(pos, conf->hwaddr, sizeof(conf->hwaddr));
 570         pos += sizeof(conf->hwaddr);
 571
 572         *(uint32_t *)pos = conf->ignore;
 573         pos += 4;
 574
 575         if (conf->ignore)
 576                 return pos - buf;
 577
 578         *(uint32_t *)pos = __cpu_to_be32(conf->method);
 579         pos += 4;
 580
 581         if (conf->method == CONFIG_METHOD_STATIC) {
 582                 pos += pb_protocol_serialise_string(pos,
 583                                 conf->static_config.address);
 584                 pos += pb_protocol_serialise_string(pos,
 585                                 conf->static_config.gateway);
 586                 pos += pb_protocol_serialise_string(pos,
 587                                 conf->static_config.url);
 588         }
 589
 590         *(uint32_t *)pos = conf->override;
 591         pos += 4;
 592
 593         return pos - buf;
 594 }
 595
 596 int pb_protocol_serialise_config(const struct config *config,
 597                 char *buf, int buf_len)
 598 {
 599         char *pos = buf;
 600         unsigned int i;
 601
 602         *(uint32_t *)pos = config->autoboot_enabled;
 603         pos += 4;
 604
 605         *(uint32_t *)pos = __cpu_to_be32(config->autoboot_timeout_sec);
 606         pos += 4;
 607
 608         *(uint32_t *)pos = config->safe_mode;
 609         pos += 4;
 610
 611         *(uint32_t *)pos = __cpu_to_be32(config->network.n_interfaces);
 612         pos += 4;
 613         for (i = 0; i < config->network.n_interfaces; i++) {
 614                 struct interface_config *iface =
 615                         config->network.interfaces[i];
 616                 pos += pb_protocol_serialise_config_interface(pos, iface);
 617         }
 618
 619         *(uint32_t *)pos = __cpu_to_be32(config->network.n_dns_servers);
 620         pos += 4;
 621         for (i = 0; i < config->network.n_dns_servers; i++) {
 622                 pos += pb_protocol_serialise_string(pos,
 623                                 config->network.dns_servers[i]);
 624         }
 625
 626         pos += pb_protocol_serialise_string(pos, config->http_proxy);
 627         pos += pb_protocol_serialise_string(pos, config->https_proxy);
 628
 629         *(uint32_t *)pos = __cpu_to_be32(config->n_autoboot_opts);
 630         pos += 4;
 631         for (i = 0; i < config->n_autoboot_opts; i++) {
 632                 *(uint32_t *)pos =
 633                         __cpu_to_be32(config->autoboot_opts[i].boot_type);
 634                 pos += 4;
 635                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE) {
 636                         *(uint32_t *)pos =
 637                                 __cpu_to_be32(config->autoboot_opts[i].type);
 638                         pos += 4;
 639                 } else {
 640                         pos += pb_protocol_serialise_string(pos,
 641                                                 config->autoboot_opts[i].uuid);
 642                 }
 643         }
 644
 645         *(uint32_t *)pos = __cpu_to_be32(config->ipmi_bootdev);
 646         pos += 4;
 647         *(uint32_t *)pos = config->ipmi_bootdev_persistent;
 648         pos += 4;
 649
 650         *(uint32_t *)pos = config->allow_writes;
 651         pos += 4;
 652
 653         *(uint32_t *)pos = __cpu_to_be32(config->n_consoles);
 654         pos += 4;
 655         for (i = 0; i < config->n_consoles; i++)
 656                 pos += pb_protocol_serialise_string(pos, config->consoles[i]);
 657
 658         pos += pb_protocol_serialise_string(pos, config->boot_console);
 659         *(uint32_t *)pos = config->manual_console;
 660         pos += 4;
 661
 662         pos += pb_protocol_serialise_string(pos, config->lang);
 663
 664         assert(pos <= buf + buf_len);
 665         (void)buf_len;
 666
 667         return 0;
 668 }
 669
 670 int pb_protocol_serialise_url(const char *url, char *buf, int buf_len)
 671 {
 672         char *pos = buf;
 673
 674         pos += pb_protocol_serialise_string(pos, url);
 675
 676         assert(pos <=buf+buf_len);
 677         (void)buf_len;
 678
 679         return 0;
 680 }
 681
 682 int pb_protocol_serialise_plugin_option(const struct plugin_option *opt,
 683                 char *buf, int buf_len)
 684 {
 685         char *pos = buf;
 686         unsigned int i;
 687
 688         pos += pb_protocol_serialise_string(pos, opt->id);
 689         pos += pb_protocol_serialise_string(pos, opt->name);
 690         pos += pb_protocol_serialise_string(pos, opt->vendor);
 691         pos += pb_protocol_serialise_string(pos, opt->vendor_id);
 692         pos += pb_protocol_serialise_string(pos, opt->version);
 693         pos += pb_protocol_serialise_string(pos, opt->date);
 694         pos += pb_protocol_serialise_string(pos, opt->plugin_file);
 695
 696         *(uint32_t *)pos = __cpu_to_be32(opt->n_executables);
 697         pos += 4;
 698
 699         for (i = 0; i < opt->n_executables; i++)
 700                 pos += pb_protocol_serialise_string(pos, opt->executables[i]);
 701
 702         assert(pos <= buf + buf_len);
 703         (void)buf_len;
 704
 705         return 0;
 706 }
 707
 708 int pb_protocol_serialise_temp_autoboot(const struct autoboot_option *opt,
 709                 char *buf, int buf_len)
 710 {
 711         char *pos = buf;
 712
 713         *(uint32_t *)pos = __cpu_to_be32(opt->boot_type);
 714         pos += 4;
 715
 716         if (opt->boot_type == BOOT_DEVICE_TYPE) {
 717                 *(uint32_t *)pos = __cpu_to_be32(opt->type);
 718                 pos += 4;
 719         } else {
 720                 pos += pb_protocol_serialise_string(pos, opt->uuid);
 721         }
 722
 723         (void)buf_len;
 724
 725         return 0;
 726 }
 727
 728 int pb_protocol_serialise_authenticate(struct auth_message *msg,
 729                 char *buf, int buf_len)
 730 {
 731         char *pos = buf;
 732
 733         *(enum auth_msg_type *)pos = msg->op;
 734         pos += sizeof(enum auth_msg_type);
 735
 736         switch(msg->op) {
 737         case AUTH_MSG_REQUEST:
 738                 pos += pb_protocol_serialise_string(pos, msg->password);
 739                 break;
 740         case AUTH_MSG_RESPONSE:
 741                 *(bool *)pos = msg->authenticated;
 742                 pos += sizeof(bool);
 743                 break;
 744         case AUTH_MSG_SET:
 745                 pos += pb_protocol_serialise_string(pos,
 746                                 msg->set_password.password);
 747                 pos += pb_protocol_serialise_string(pos,
 748                                 msg->set_password.new_password);
 749                 break;
 750         default:
 751                 pb_log("%s: invalid msg\n", __func__);
 752                 return -1;
 753         };
 754
 755         assert(pos <= buf + buf_len);
 756         (void)buf_len;
 757
 758         return 0;
 759 }
 760
 761 int pb_protocol_write_message(int fd, struct pb_protocol_message *message)
 762 {
 763         int total_len, rc;
 764         char *pos;
 765
 766         total_len = sizeof(*message) + message->payload_len;
 767
 768         message->payload_len = __cpu_to_be32(message->payload_len);
 769         message->action = __cpu_to_be32(message->action);
 770
 771         for (pos = (void *)message; total_len;) {
 772                 rc = write(fd, pos, total_len);
 773
 774                 if (rc <= 0)
 775                         break;
 776
 777                 total_len -= rc;
 778                 pos += rc;
 779         }
 780
 781         talloc_free(message);
 782
 783         if (!total_len)
 784                 return 0;
 785
 786         pb_log_fn("failed: %s\n", strerror(errno));
 787         return -1;
 788 }
 789
 790 struct pb_protocol_message *pb_protocol_create_message(void *ctx,
 791                 enum pb_protocol_action action, int payload_len)
 792 {
 793         struct pb_protocol_message *message;
 794
 795         if (payload_len > PB_PROTOCOL_MAX_PAYLOAD_SIZE) {
 796                 pb_log_fn("payload too big %u/%u\n", payload_len,
 797                         PB_PROTOCOL_MAX_PAYLOAD_SIZE);
 798                 return NULL;
 799         }
 800
 801         message = talloc_size(ctx, sizeof(*message) + payload_len);
 802
 803         /* we convert these to big-endian in write_message() */
 804         message->action = action;
 805         message->payload_len = payload_len;
 806
 807         return message;
 808
 809 }
 810
 811 struct pb_protocol_message *pb_protocol_read_message(void *ctx, int fd)
 812 {
 813         struct pb_protocol_message *message, m;
 814         int rc;
 815         unsigned int len;
 816
 817         /* use the stack for the initial 8-byte read */
 818
 819         rc = read(fd, &m, sizeof(m));
 820         if (rc != sizeof(m))
 821                 return NULL;
 822
 823         m.payload_len = __be32_to_cpu(m.payload_len);
 824         m.action = __be32_to_cpu(m.action);
 825
 826         if (m.payload_len > PB_PROTOCOL_MAX_PAYLOAD_SIZE) {
 827                 pb_log_fn("payload too big %u/%u\n", m.payload_len,
 828                         PB_PROTOCOL_MAX_PAYLOAD_SIZE);
 829                 return NULL;
 830         }
 831
 832         message = talloc_size(ctx, sizeof(m) + m.payload_len);
 833         memcpy(message, &m, sizeof(m));
 834
 835         for (len = 0; len < m.payload_len;) {
 836                 rc = read(fd, message->payload + len, m.payload_len - len);
 837
 838                 if (rc <= 0) {
 839                         talloc_free(message);
 840                         pb_log_fn("failed (%u): %s\n", len,
 841                                 strerror(errno));
 842                         return NULL;
 843                 }
 844
 845                 len += rc;
 846         }
 847
 848         return message;
 849 }
 850
 851
 852 int pb_protocol_deserialise_device(struct device *dev,
 853                 const struct pb_protocol_message *message)
 854 {
 855         unsigned int len;
 856         const char *pos;
 857         int rc = -1;
 858
 859         len = message->payload_len;
 860         pos = message->payload;
 861
 862         if (read_string(dev, &pos, &len, &dev->id))
 863                 goto out;
 864
 865         if (len < sizeof(enum device_type))
 866                 goto out;
 867         dev->type = *(enum device_type *)(pos);
 868         pos += sizeof(enum device_type);
 869         len -= sizeof(enum device_type);
 870
 871         if (read_string(dev, &pos, &len, &dev->name))
 872                 goto out;
 873
 874         if (read_string(dev, &pos, &len, &dev->description))
 875                 goto out;
 876
 877         if (read_string(dev, &pos, &len, &dev->icon_file))
 878                 goto out;
 879
 880         rc = 0;
 881
 882 out:
 883         return rc;
 884 }
 885
 886 int pb_protocol_deserialise_boot_option(struct boot_option *opt,
 887                 const struct pb_protocol_message *message)
 888 {
 889         unsigned int len;
 890         const char *pos;
 891         int rc = -1;
 892
 893         len = message->payload_len;
 894         pos = message->payload;
 895
 896         if (read_string(opt, &pos, &len, &opt->device_id))
 897                 goto out;
 898
 899         if (read_string(opt, &pos, &len, &opt->id))
 900                 goto out;
 901
 902         if (read_string(opt, &pos, &len, &opt->name))
 903                 goto out;
 904
 905         if (read_string(opt, &pos, &len, &opt->description))
 906                 goto out;
 907
 908         if (read_string(opt, &pos, &len, &opt->icon_file))
 909                 goto out;
 910
 911         if (read_string(opt, &pos, &len, &opt->boot_image_file))
 912                 goto out;
 913
 914         if (read_string(opt, &pos, &len, &opt->initrd_file))
 915                 goto out;
 916
 917         if (read_string(opt, &pos, &len, &opt->dtb_file))
 918                 goto out;
 919
 920         if (read_string(opt, &pos, &len, &opt->boot_args))
 921                 goto out;
 922
 923         if (read_string(opt, &pos, &len, &opt->args_sig_file))
 924                 goto out;
 925
 926         if (len < sizeof(bool))
 927                 goto out;
 928         opt->is_default = *(bool *)(pos);
 929         pos += sizeof(bool);
 930         len -= sizeof(bool);
 931         opt->is_autoboot_default = *(bool *)(pos);
 932         pos += sizeof(bool);
 933         len -= sizeof(bool);
 934
 935         if (read_u32(&pos, &len, &opt->type))
 936                 return -1;
 937
 938         rc = 0;
 939
 940 out:
 941         return rc;
 942 }
 943
 944 int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
 945                 const struct pb_protocol_message *message)
 946 {
 947         unsigned int len;
 948         const char *pos;
 949         int rc = -1;
 950
 951         len = message->payload_len;
 952         pos = message->payload;
 953
 954         if (read_string(cmd, &pos, &len, &cmd->option_id))
 955                 goto out;
 956
 957         if (read_string(cmd, &pos, &len, &cmd->boot_image_file))
 958                 goto out;
 959
 960         if (read_string(cmd, &pos, &len, &cmd->initrd_file))
 961                 goto out;
 962
 963         if (read_string(cmd, &pos, &len, &cmd->dtb_file))
 964                 goto out;
 965
 966         if (read_string(cmd, &pos, &len, &cmd->boot_args))
 967                 goto out;
 968
 969         if (read_string(cmd, &pos, &len, &cmd->args_sig_file))
 970                 goto out;
 971
 972         if (read_string(cmd, &pos, &len, &cmd->console))
 973                 goto out;
 974
 975         rc = 0;
 976
 977 out:
 978         return rc;
 979 }
 980
 981 int pb_protocol_deserialise_boot_status(struct status *status,
 982                 const struct pb_protocol_message *message)
 983 {
 984         unsigned int len;
 985         const char *pos;
 986         int rc = -1;
 987
 988         len = message->payload_len;
 989         pos = message->payload;
 990
 991         /* first up, the type enum... */
 992         if (len < sizeof(uint32_t))
 993                 goto out;
 994
 995         status->type = __be32_to_cpu(*(uint32_t *)(pos));
 996
 997         switch (status->type) {
 998         case STATUS_ERROR:
 999         case STATUS_INFO:
1000                 break;
1001         default:
1002                 goto out;
1003         }
1004
1005         pos += sizeof(uint32_t);
1006         len -= sizeof(uint32_t);
1007
1008         /* message string */
1009         if (read_string(status, &pos, &len, &status->message))
1010                 goto out;
1011
1012         /* backlog */
1013         status->backlog = *(bool *)pos;
1014         pos += sizeof(status->backlog);
1015
1016         /* boot_active */
1017         status->boot_active = *(bool *)pos;
1018         pos += sizeof(status->boot_active);
1019
1020         rc = 0;
1021
1022 out:
1023         return rc;
1024 }
1025
1026 int pb_protocol_deserialise_system_info(struct system_info *sysinfo,
1027                 const struct pb_protocol_message *message)
1028 {
1029         unsigned int len, i;
1030         const char *pos;
1031         int rc = -1;
1032         char *tmp;
1033
1034         len = message->payload_len;
1035         pos = message->payload;
1036
1037         /* type and identifier strings */
1038         if (read_string(sysinfo, &pos, &len, &sysinfo->type))
1039                 goto out;
1040
1041         if (read_string(sysinfo, &pos, &len, &sysinfo->identifier))
1042                 goto out;
1043
1044         /* Platform version strings for openpower platforms */
1045         if (read_u32(&pos, &len, &sysinfo->n_primary))
1046                 goto out;
1047         sysinfo->platform_primary = talloc_array(sysinfo, char *,
1048                                                 sysinfo->n_primary);
1049         for (i = 0; i < sysinfo->n_primary; i++) {
1050                 if (read_string(sysinfo, &pos, &len, &tmp))
1051                         goto out;
1052                 sysinfo->platform_primary[i] = talloc_strdup(sysinfo, tmp);
1053         }
1054
1055         if (read_u32(&pos, &len, &sysinfo->n_other))
1056                 goto out;
1057         sysinfo->platform_other = talloc_array(sysinfo, char *,
1058                                                 sysinfo->n_other);
1059         for (i = 0; i < sysinfo->n_other; i++) {
1060                 if (read_string(sysinfo, &pos, &len, &tmp))
1061                         goto out;
1062                 sysinfo->platform_other[i] = talloc_strdup(sysinfo, tmp);
1063         }
1064
1065         /* BMC version strings for openpower platforms */
1066         if (read_u32(&pos, &len, &sysinfo->n_bmc_current))
1067                 goto out;
1068         sysinfo->bmc_current = talloc_array(sysinfo, char *,
1069                                                 sysinfo->n_bmc_current);
1070         for (i = 0; i < sysinfo->n_bmc_current; i++) {
1071                 if (read_string(sysinfo, &pos, &len, &tmp))
1072                         goto out;
1073                 sysinfo->bmc_current[i] = talloc_strdup(sysinfo, tmp);
1074         }
1075
1076         if (read_u32(&pos, &len, &sysinfo->n_bmc_golden))
1077                 goto out;
1078         sysinfo->bmc_golden = talloc_array(sysinfo, char *,
1079                                                 sysinfo->n_bmc_golden);
1080         for (i = 0; i < sysinfo->n_bmc_golden; i++) {
1081                 if (read_string(sysinfo, &pos, &len, &tmp))
1082                         goto out;
1083                 sysinfo->bmc_golden[i] = talloc_strdup(sysinfo, tmp);
1084         }
1085
1086         /* number of interfaces */
1087         if (read_u32(&pos, &len, &sysinfo->n_interfaces))
1088                 goto out;
1089
1090         sysinfo->interfaces = talloc_array(sysinfo, struct interface_info *,
1091                         sysinfo->n_interfaces);
1092
1093         for (i = 0; i < sysinfo->n_interfaces; i++) {
1094                 struct interface_info *if_info = talloc(sysinfo,
1095                                                         struct interface_info);
1096
1097                 if (read_u32(&pos, &len, &if_info->hwaddr_size))
1098                         goto out;
1099
1100                 if (len < if_info->hwaddr_size)
1101                         goto out;
1102
1103                 if_info->hwaddr = talloc_memdup(if_info, pos,
1104                                                 if_info->hwaddr_size);
1105                 pos += if_info->hwaddr_size;
1106                 len -= if_info->hwaddr_size;
1107
1108                 if (read_string(if_info, &pos, &len, &if_info->name))
1109                         goto out;
1110
1111                 if_info->link = *(bool *)pos;
1112                 pos += sizeof(if_info->link);
1113
1114                 if (read_string(if_info, &pos, &len, &if_info->address))
1115                         goto out;
1116                 if (read_string(if_info, &pos, &len, &if_info->address_v6))
1117                         goto out;
1118
1119                 sysinfo->interfaces[i] = if_info;
1120         }
1121
1122         /* number of interfaces */
1123         if (read_u32(&pos, &len, &sysinfo->n_blockdevs))
1124                 goto out;
1125
1126         sysinfo->blockdevs = talloc_array(sysinfo, struct blockdev_info *,
1127                         sysinfo->n_blockdevs);
1128
1129         for (i = 0; i < sysinfo->n_blockdevs; i++) {
1130                 struct blockdev_info *bd_info = talloc(sysinfo,
1131                                                         struct blockdev_info);
1132
1133                 if (read_string(bd_info, &pos, &len, &bd_info->name))
1134                         goto out;
1135
1136                 if (read_string(bd_info, &pos, &len, &bd_info->uuid))
1137                         goto out;
1138
1139                 if (read_string(bd_info, &pos, &len, &bd_info->mountpoint))
1140                         goto out;
1141
1142                 sysinfo->blockdevs[i] = bd_info;
1143         }
1144
1145         for (i = 0; i < HWADDR_SIZE; i++) {
1146                 if (pos[i] != 0) {
1147                         sysinfo->bmc_mac = talloc_memdup(sysinfo, pos, HWADDR_SIZE);
1148                         break;
1149                 }
1150         }
1151
1152         pos += HWADDR_SIZE;
1153         len -= HWADDR_SIZE;
1154
1155         rc = 0;
1156 out:
1157         return rc;
1158 }
1159
1160 static int pb_protocol_deserialise_config_interface(const char **buf,
1161                 unsigned int *len, struct interface_config *iface)
1162 {
1163         unsigned int tmp;
1164
1165         if (*len < sizeof(iface->hwaddr))
1166                 return -1;
1167
1168         memcpy(iface->hwaddr, *buf, sizeof(iface->hwaddr));
1169         *buf += sizeof(iface->hwaddr);
1170         *len -= sizeof(iface->hwaddr);
1171
1172         if (read_u32(buf, len, &tmp))
1173                 return -1;
1174         iface->ignore = !!tmp;
1175
1176         if (iface->ignore)
1177                 return 0;
1178
1179         if (read_u32(buf, len, &iface->method))
1180                 return -1;
1181
1182         if (iface->method == CONFIG_METHOD_STATIC) {
1183                 if (read_string(iface, buf, len, &iface->static_config.address))
1184                         return -1;
1185
1186                 if (read_string(iface, buf, len, &iface->static_config.gateway))
1187                         return -1;
1188
1189                 if (read_string(iface, buf, len, &iface->static_config.url))
1190                         return -1;
1191         }
1192
1193         if (read_u32(buf, len, &tmp))
1194                 return -1;
1195         iface->override = !!tmp;
1196
1197         return 0;
1198 }
1199
1200 int pb_protocol_deserialise_config(struct config *config,
1201                 const struct pb_protocol_message *message)
1202 {
1203         unsigned int len, i, tmp;
1204         const char *pos;
1205         int rc = -1;
1206         char *str;
1207
1208         len = message->payload_len;
1209         pos = message->payload;
1210
1211         if (read_u32(&pos, &len, &tmp))
1212                 goto out;
1213         config->autoboot_enabled = !!tmp;
1214
1215         if (read_u32(&pos, &len, &config->autoboot_timeout_sec))
1216                 goto out;
1217
1218         if (read_u32(&pos, &len, &tmp))
1219                 goto out;
1220         config->safe_mode = !!tmp;
1221
1222         if (read_u32(&pos, &len, &config->network.n_interfaces))
1223                 goto out;
1224
1225         config->network.interfaces = talloc_array(config,
1226                         struct interface_config *, config->network.n_interfaces);
1227
1228         for (i = 0; i < config->network.n_interfaces; i++) {
1229                 struct interface_config *iface = talloc_zero(
1230                                 config->network.interfaces,
1231                                 struct interface_config);
1232                 if (pb_protocol_deserialise_config_interface(&pos, &len, iface))
1233                         goto out;
1234                 config->network.interfaces[i] = iface;
1235         }
1236
1237         if (read_u32(&pos, &len, &config->network.n_dns_servers))
1238                 goto out;
1239         config->network.dns_servers = talloc_array(config, const char *,
1240                         config->network.n_dns_servers);
1241
1242         for (i = 0; i < config->network.n_dns_servers; i++) {
1243                 if (read_string(config->network.dns_servers, &pos, &len, &str))
1244                         goto out;
1245                 config->network.dns_servers[i] = str;
1246         }
1247
1248         if (read_string(config, &pos, &len, &str))
1249                 goto out;
1250         config->http_proxy = str;
1251         if (read_string(config, &pos, &len, &str))
1252                 goto out;
1253         config->https_proxy = str;
1254
1255         if (read_u32(&pos, &len, &config->n_autoboot_opts))
1256                 goto out;
1257         config->autoboot_opts = talloc_array(config, struct autoboot_option,
1258                         config->n_autoboot_opts);
1259
1260         for (i = 0; i < config->n_autoboot_opts; i++) {
1261                 if (read_u32(&pos, &len, &tmp))
1262                         goto out;
1263                 config->autoboot_opts[i].boot_type = (int)tmp;
1264                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE) {
1265                         if (read_u32(&pos, &len, &tmp))
1266                                 goto out;
1267                         config->autoboot_opts[i].type = tmp;
1268                 } else {
1269                         if (read_string(config, &pos, &len, &str))
1270                                 goto out;
1271                         config->autoboot_opts[i].uuid = str;
1272                 }
1273         }
1274
1275         if (read_u32(&pos, &len, &config->ipmi_bootdev))
1276                 goto out;
1277         if (read_u32(&pos, &len, &tmp))
1278                 goto out;
1279         config->ipmi_bootdev_persistent = !!tmp;
1280
1281         if (read_u32(&pos, &len, &tmp))
1282                 goto out;
1283         config->allow_writes = !!tmp;
1284
1285         if (read_u32(&pos, &len, &config->n_consoles))
1286                 goto out;
1287
1288         config->consoles = talloc_array(config, char *, config->n_consoles);
1289         for (i = 0; i < config->n_consoles; i++) {
1290                 if (read_string(config->consoles, &pos, &len, &str))
1291                         goto out;
1292                 config->consoles[i] = str;
1293         }
1294
1295         if (read_string(config, &pos, &len, &str))
1296                 goto out;
1297
1298         config->boot_console = str;
1299
1300         if (read_u32(&pos, &len, &tmp))
1301                 goto out;
1302         config->manual_console = !!tmp;
1303
1304         if (read_string(config, &pos, &len, &str))
1305                 goto out;
1306
1307         config->lang = str;
1308
1309         rc = 0;
1310
1311 out:
1312         return rc;
1313 }
1314
1315 int pb_protocol_deserialise_plugin_option(struct plugin_option *opt,
1316                 const struct pb_protocol_message *message)
1317 {
1318         unsigned int len, i, tmp;
1319         const char *pos;
1320         int rc = -1;
1321         char *str;
1322
1323         len = message->payload_len;
1324         pos = message->payload;
1325
1326         if (read_string(opt, &pos, &len, &str))
1327                 goto out;
1328         opt->id = str;
1329
1330         if (read_string(opt, &pos, &len, &str))
1331                 goto out;
1332         opt->name = str;
1333
1334         if (read_string(opt, &pos, &len, &str))
1335                 goto out;
1336         opt->vendor = str;
1337
1338         if (read_string(opt, &pos, &len, &str))
1339                 goto out;
1340         opt->vendor_id = str;
1341
1342         if (read_string(opt, &pos, &len, &str))
1343                 goto out;
1344         opt->version = str;
1345
1346         if (read_string(opt, &pos, &len, &str))
1347                 goto out;
1348         opt->date = str;
1349
1350         if (read_string(opt, &pos, &len, &str))
1351                 goto out;
1352         opt->plugin_file = str;
1353
1354         if (read_u32(&pos, &len, &tmp))
1355                 goto out;
1356         opt->n_executables = tmp;
1357
1358         opt->executables = talloc_zero_array(opt, char *, opt->n_executables);
1359         if (!opt->executables)
1360                 goto out;
1361
1362         for (i = 0; i < opt->n_executables; i++) {
1363                 if (read_string(opt, &pos, &len, &str))
1364                         goto out;
1365                 opt->executables[i] = talloc_strdup(opt, str);
1366         }
1367
1368         rc = 0;
1369 out:
1370         return rc;
1371 }
1372
1373 int pb_protocol_deserialise_temp_autoboot(struct autoboot_option *opt,
1374                 const struct pb_protocol_message *message)
1375 {
1376         unsigned int len, tmp;
1377         const char *pos;
1378         int rc = -1;
1379         char *str;
1380
1381         len = message->payload_len;
1382         pos = message->payload;
1383
1384         if (read_u32(&pos, &len, &tmp))
1385                 goto out;
1386
1387         opt->boot_type = tmp;
1388         if (opt->boot_type == BOOT_DEVICE_TYPE) {
1389                 if (read_u32(&pos, &len, &tmp))
1390                         goto out;
1391                 opt->type = tmp;
1392
1393         } else if (opt->boot_type == BOOT_DEVICE_UUID) {
1394                 if (read_string(opt, &pos, &len, &str))
1395                         goto out;
1396                 opt->uuid = str;
1397
1398         } else {
1399                 return -1;
1400         }
1401
1402         rc = 0;
1403
1404 out:
1405         return rc;
1406 }
1407
1408 int pb_protocol_deserialise_authenticate(struct auth_message *msg,
1409                 const struct pb_protocol_message *message)
1410 {
1411         unsigned int len;
1412         const char *pos;
1413
1414         len = message->payload_len;
1415         pos = message->payload;
1416
1417         msg->op = *(enum auth_msg_type *)pos;
1418         pos += sizeof(enum auth_msg_type);
1419
1420         switch (msg->op) {
1421         case AUTH_MSG_REQUEST:
1422                 if (read_string(msg, &pos, &len, &msg->password))
1423                         return -1;
1424                 break;
1425         case AUTH_MSG_RESPONSE:
1426                 msg->authenticated = *(bool *)pos;
1427                 pos += sizeof(bool);
1428                 break;
1429         case AUTH_MSG_SET:
1430                 if (read_string(msg, &pos, &len, &msg->set_password.password))
1431                         return -1;
1432                 if (read_string(msg, &pos, &len,
1433                                         &msg->set_password.new_password))
1434                         return -1;
1435                 break;
1436         default:
1437                 pb_log("%s: unable to parse\n", __func__);
1438                 return -1;
1439         }
1440
1441         return 0;
1442 }