utility/bmpblk_utility.cc - third_party/vboot_reference - Git at Google

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Utility for manipulating firmware screen block (BMPBLOCK) in GBB.
 //

 #include <assert.h>
 #include <errno.h>
 #include <getopt.h>
 #include <lzma.h>
 #include <stdarg.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <yaml.h>

 #include "bmpblk_utility.h"
 #include "image_types.h"
 #include "vboot_api.h"

 extern "C" {
 #include "eficompress.h"
 }


 static void error(const char *format, ...) {
   va_list ap;
   va_start(ap, format);
   fprintf(stderr, "ERROR: ");
   vfprintf(stderr, format, ap);
   va_end(ap);
   exit(1);
 }

 ///////////////////////////////////////////////////////////////////////
 // BmpBlock Utility implementation

 namespace vboot_reference {

   BmpBlockUtil::BmpBlockUtil(bool debug) {
     major_version_ = BMPBLOCK_MAJOR_VERSION;
     minor_version_ = BMPBLOCK_MINOR_VERSION;
     config_.config_filename.clear();
     memset(&config_.header, '\0', BMPBLOCK_SIGNATURE_SIZE);
     config_.images_map.clear();
     config_.screens_map.clear();
     config_.localizations.clear();
     bmpblock_.clear();
     set_compression_ = false;
     compression_ = COMPRESS_NONE;
     debug_ = debug;
     render_hwid_ = true;
     support_font_ = true;
     got_font_ = false;
     got_rtol_font_ = false;
   }

   BmpBlockUtil::~BmpBlockUtil() {
   }

   void BmpBlockUtil::force_compression(uint32_t compression) {
     compression_ = compression;
     set_compression_ = true;
   }

   void BmpBlockUtil::load_from_config(const char *filename) {
     load_yaml_config(filename);
     fill_bmpblock_header();
     load_all_image_files();
   }

   void BmpBlockUtil::load_yaml_config(const char *filename) {
     yaml_parser_t parser;

     config_.config_filename = filename;
     config_.images_map.clear();
     config_.screens_map.clear();
     config_.localizations.clear();
     config_.locale_names.clear();

     FILE *fp = fopen(filename, "rb");
     if (!fp) {
       perror(filename);
       exit(errno);
     }

     yaml_parser_initialize(&parser);
     yaml_parser_set_input_file(&parser, fp);
     parse_config(&parser);
     yaml_parser_delete(&parser);
     fclose(fp);


     // TODO: Check the yaml file for self-consistency. Warn on any problems.
     // All images should be used somewhere in the screens.
     // All images referenced in the screens should be defined.
     // All screens should be used somewhere in the localizations.
     // All screens referenced in the localizations should be defined.
     // The number of localizations should match the number of locale_index

     if (debug_) {
       printf("%zd image_names\n", config_.image_names.size());
       for (unsigned int i = 0; i < config_.image_names.size(); ++i) {
         printf(" %d: \"%s\"\n", i, config_.image_names[i].c_str());
       }
       printf("%zd images_map\n", config_.images_map.size());
       for (StrImageConfigMap::iterator it = config_.images_map.begin();
            it != config_.images_map.end();
            ++it) {
         printf("  \"%s\": filename=\"%s\" offset=0x%x tag=%d fmt=%d\n",
                it->first.c_str(),
                it->second.filename.c_str(),
                it->second.offset,
                it->second.data.tag,
                it->second.data.format);
       }
       printf("%zd screens_map\n", config_.screens_map.size());
       for (StrScreenConfigMap::iterator it = config_.screens_map.begin();
            it != config_.screens_map.end();
            ++it) {
         printf("  \"%s\":\n", it->first.c_str());
         for (int k=0; k<MAX_IMAGE_IN_LAYOUT; k++) {
           printf("    %d: \"%s\" (%d,%d) ofs=0x%x\n",
                  k,
                  it->second.image_names[k].c_str(),
                  it->second.data.images[k].x,
                  it->second.data.images[k].y,
                  it->second.data.images[k].image_info_offset);
         }
       }
     }
   }

   void BmpBlockUtil::expect_event(yaml_parser_t *parser,
                                   const yaml_event_type_e type) {
     yaml_event_t event;
     yaml_parser_parse(parser, &event);
     if (event.type != type) {
       error("Syntax error.\n");
     }
     yaml_event_delete(&event);
   }

   void BmpBlockUtil::parse_config(yaml_parser_t *parser) {
     expect_event(parser, YAML_STREAM_START_EVENT);
     expect_event(parser, YAML_DOCUMENT_START_EVENT);
     parse_first_layer(parser);
     expect_event(parser, YAML_DOCUMENT_END_EVENT);
     expect_event(parser, YAML_STREAM_END_EVENT);
   }

   void BmpBlockUtil::parse_first_layer(yaml_parser_t *parser) {
     yaml_event_t event;
     string keyword;
     expect_event(parser, YAML_MAPPING_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SCALAR_EVENT:
         keyword = (char*)event.data.scalar.value;
         if (keyword == "bmpblock") {
           parse_bmpblock(parser);
         } else if (keyword == "compression") {
           parse_compression(parser);
         } else if (keyword == "images") {
           parse_images(parser);
         } else if (keyword == "screens") {
           parse_screens(parser);
         } else if (keyword == "localizations") {
           parse_localizations(parser);
         } else if (keyword == "locale_index") {
           parse_locale_index(parser);
         }
         break;
       case YAML_MAPPING_END_EVENT:
         yaml_event_delete(&event);
         return;
       default:
         error("Syntax error in parsing config file.\n");
       }
       yaml_event_delete(&event);
     }
   }

   void BmpBlockUtil::parse_bmpblock(yaml_parser_t *parser) {
     yaml_event_t event;
     yaml_parser_parse(parser, &event);
     if (event.type != YAML_SCALAR_EVENT) {
       error("Syntax error in parsing bmpblock.\n");
     }
     string gotversion = (char*)event.data.scalar.value;
     if (gotversion != "2.0") {
       error("Unsupported version specified in config file (%s)\n",
             gotversion.c_str());
     }
     yaml_event_delete(&event);
   }

   void BmpBlockUtil::parse_compression(yaml_parser_t *parser) {
     yaml_event_t event;
     yaml_parser_parse(parser, &event);
     if (event.type != YAML_SCALAR_EVENT) {
       error("Syntax error in parsing bmpblock.\n");
     }
     char *comp_str = (char *)event.data.scalar.value;
     char *e = 0;
     uint32_t comp = (uint32_t)strtoul(comp_str, &e, 0);
     if (!*comp_str || (e && *e) || comp >= MAX_COMPRESS) {
       error("Invalid compression specified in config file (%d)\n", comp);
     }
     if (!set_compression_) {
       compression_ = comp;
     }
     yaml_event_delete(&event);
   }

   void BmpBlockUtil::parse_images(yaml_parser_t *parser) {
     yaml_event_t event;
     string image_name, image_filename;
     expect_event(parser, YAML_MAPPING_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SCALAR_EVENT:
         image_name = (char*)event.data.scalar.value;
         yaml_event_delete(&event);
         yaml_parser_parse(parser, &event);
         if (event.type != YAML_SCALAR_EVENT) {
           error("Syntax error in parsing images.\n");
         }
         image_filename = (char*)event.data.scalar.value;
         config_.image_names.push_back(image_name);
         config_.images_map[image_name] = ImageConfig();
         config_.images_map[image_name].filename = image_filename;
         if (image_name == RENDER_HWID) {
           got_font_ = true;
         }
         if (image_name == RENDER_HWID_RTOL) {
           got_rtol_font_ = true;
         }
         break;
       case YAML_MAPPING_END_EVENT:
         yaml_event_delete(&event);
         return;
       default:
         error("Syntax error in parsing images.\n");
       }
       yaml_event_delete(&event);
     }
   }

   void BmpBlockUtil::parse_layout(yaml_parser_t *parser, ScreenConfig &screen) {
     yaml_event_t event;
     int depth = 0, index1 = 0, index2 = 0;
     expect_event(parser, YAML_SEQUENCE_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SEQUENCE_START_EVENT:
         depth++;
         break;
       case YAML_SCALAR_EVENT:
         switch (index2) {
         case 0:
           screen.data.images[index1].x = atoi((char*)event.data.scalar.value);
           break;
         case 1:
           screen.data.images[index1].y = atoi((char*)event.data.scalar.value);
           break;
         case 2:
           screen.image_names[index1] = (char*)event.data.scalar.value;
           // Detect the special case where we're rendering the HWID string
           // instead of displaying a bitmap.  The image name may not
           // exist in the list of images (v1.1), but we will still need an
           // ImageInfo struct to remember where to draw the text.
           // Note that v1.2 requires that the image name DOES exist, because
           // the corresponding file is used to hold the font glpyhs.
           if (render_hwid_) {
             if (screen.image_names[index1] == RENDER_HWID) {
               config_.images_map[RENDER_HWID].data.tag = TAG_HWID;
               if (support_font_ && !got_font_)
                 error("Font required in 'image:' section for %s\n",
                       RENDER_HWID);
             } else if (screen.image_names[index1] == RENDER_HWID_RTOL) {
               config_.images_map[RENDER_HWID_RTOL].data.tag = TAG_HWID_RTOL;
               if (support_font_ && !got_rtol_font_)
                 error("Font required in 'image:' section for %s\n",
                       RENDER_HWID_RTOL);
             }
           }
           break;
         default:
           error("Syntax error in parsing layout\n");
         }
         index2++;
         break;
       case YAML_SEQUENCE_END_EVENT:
         if (depth == 1) {
           index1++;
           index2 = 0;
         } else if (depth == 0) {
           yaml_event_delete(&event);
           return;
         }
         depth--;
         break;
       default:
         error("Syntax error in paring layout.\n");
       }
       yaml_event_delete(&event);
     }
   }

   void BmpBlockUtil::parse_screens(yaml_parser_t *parser) {
     yaml_event_t event;
     string screen_name;
     expect_event(parser, YAML_MAPPING_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SCALAR_EVENT:
         screen_name = (char*)event.data.scalar.value;
         config_.screens_map[screen_name] = ScreenConfig();
         parse_layout(parser, config_.screens_map[screen_name]);
         break;
       case YAML_MAPPING_END_EVENT:
         yaml_event_delete(&event);
         return;
       default:
         error("Syntax error in parsing screens.\n");
       }
       yaml_event_delete(&event);
     }
   }

   void BmpBlockUtil::parse_localizations(yaml_parser_t *parser) {
     yaml_event_t event;
     int depth = 0, index = 0;
     expect_event(parser, YAML_SEQUENCE_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SEQUENCE_START_EVENT:
         config_.localizations.push_back(vector<string>());
         depth++;
         break;
       case YAML_SCALAR_EVENT:
         config_.localizations[index].push_back((char*)event.data.scalar.value);
         break;
       case YAML_SEQUENCE_END_EVENT:
         if (depth == 1) {
           index++;
         } else if (depth == 0) {
           yaml_event_delete(&event);
           return;
         }
         depth--;
         break;
       default:
         error("Syntax error in parsing localizations.\n");
       }
       yaml_event_delete(&event);
     }
   }

   void BmpBlockUtil::parse_locale_index(yaml_parser_t *parser) {
     yaml_event_t event;
     expect_event(parser, YAML_SEQUENCE_START_EVENT);
     for (;;) {
       yaml_parser_parse(parser, &event);
       switch (event.type) {
       case YAML_SCALAR_EVENT:
         config_.locale_names.append((char*)event.data.scalar.value);
         config_.locale_names.append(1, (char)'\0'); // '\0' to delimit
         break;
       case YAML_SEQUENCE_END_EVENT:
         yaml_event_delete(&event);
         config_.locale_names.append(1, (char)'\0'); // double '\0' to terminate
         return;
       default:
         error("Syntax error in parsing localizations.\n");
       }
     }
   }

   void BmpBlockUtil::load_all_image_files() {
     for (unsigned int i = 0; i < config_.image_names.size(); i++) {
       StrImageConfigMap::iterator it =
         config_.images_map.find(config_.image_names[i]);
       if (debug_) {
         printf("loading image \"%s\" from \"%s\"\n",
                config_.image_names[i].c_str(),
                it->second.filename.c_str());
       }
       const string &content = read_image_file(it->second.filename.c_str());
       it->second.raw_content = content;
       it->second.data.original_size = content.size();
       it->second.data.format =
         identify_image_type(content.c_str(),
                             (uint32_t)content.size(), &it->second.data);
       if (FORMAT_INVALID == it->second.data.format) {
         error("Unsupported image format in %s\n", it->second.filename.c_str());
       }
       switch(compression_) {
       case COMPRESS_NONE:
         it->second.data.compression = compression_;
         it->second.compressed_content = content;
         it->second.data.compressed_size = content.size();
         break;
       case COMPRESS_EFIv1:
       {
         // The content will always compress smaller (so sez the docs).
         uint32_t tmpsize = content.size();
         uint8_t *tmpbuf = (uint8_t *)malloc(tmpsize);
         // The size of the compressed content is also returned.
         if (EFI_SUCCESS != EfiCompress((uint8_t *)content.c_str(), tmpsize,
                                        tmpbuf, &tmpsize)) {
           error("Unable to compress!\n");
         }
         it->second.data.compression = compression_;
         it->second.compressed_content.assign((const char *)tmpbuf, tmpsize);
         it->second.data.compressed_size = tmpsize;
         free(tmpbuf);
       }
       break;
       case COMPRESS_LZMA1:
       {
         // Calculate the worst case of buffer size.
         uint32_t tmpsize = lzma_stream_buffer_bound(content.size());
         uint8_t *tmpbuf = (uint8_t *)malloc(tmpsize);
         lzma_stream stream = LZMA_STREAM_INIT;
         lzma_options_lzma options;
         lzma_ret result;

         lzma_lzma_preset(&options, 9);
         result = lzma_alone_encoder(&stream, &options);
         if (result != LZMA_OK) {
           error("Unable to initialize easy encoder (error: %d)!\n", result);
         }

         stream.next_in = (uint8_t *)content.data();
         stream.avail_in = content.size();
         stream.next_out = tmpbuf;
         stream.avail_out = tmpsize;
         result = lzma_code(&stream, LZMA_FINISH);
         if (result != LZMA_STREAM_END) {
           error("Unable to encode data (error: %d)!\n", result);
         }

         it->second.data.compression = compression_;
         it->second.compressed_content.assign((const char *)tmpbuf,
                                              tmpsize - stream.avail_out);
         it->second.data.compressed_size = tmpsize - stream.avail_out;
         lzma_end(&stream);
         free(tmpbuf);
       }
       break;
       default:
         error("Unsupported compression method attempted.\n");
       }
     }
   }

   const string BmpBlockUtil::read_image_file(const char *filename) {
     string content;
     vector<char> buffer;

     FILE *fp = fopen(filename, "rb");
     if (!fp) {
       perror(filename);
       exit(errno);
     }

     if (fseek(fp, 0, SEEK_END) == 0) {
       buffer.resize(ftell(fp));
       rewind(fp);
     }

     if (!buffer.empty()) {
       if(fread(&buffer[0], buffer.size(), 1, fp) != 1) {
         perror(filename);
         buffer.clear();
       } else {
         content.assign(buffer.begin(), buffer.end());
       }
     }

     fclose(fp);
     return content;
   }

   void BmpBlockUtil::fill_bmpblock_header() {
     memset(&config_.header, '\0', sizeof(config_.header));
     memcpy(&config_.header.signature, BMPBLOCK_SIGNATURE,
            BMPBLOCK_SIGNATURE_SIZE);
     config_.header.major_version = major_version_;
     config_.header.minor_version = minor_version_;
     config_.header.number_of_localizations = config_.localizations.size();
     config_.header.number_of_screenlayouts = config_.localizations[0].size();
     // NOTE: this is part of the yaml consistency check
     for (unsigned int i = 1; i < config_.localizations.size(); ++i) {
       assert(config_.header.number_of_screenlayouts ==
              config_.localizations[i].size());
     }
     config_.header.number_of_imageinfos = config_.images_map.size();
     config_.header.locale_string_offset = 0; // Filled by pack_bmpblock()
   }

   void BmpBlockUtil::pack_bmpblock() {
     bmpblock_.clear();

     /* Compute the ImageInfo offsets from start of BMPBLOCK. */
     uint32_t current_offset = sizeof(BmpBlockHeader) +
       sizeof(ScreenLayout) * (config_.header.number_of_localizations *
                               config_.header.number_of_screenlayouts);
     for (StrImageConfigMap::iterator it = config_.images_map.begin();
          it != config_.images_map.end();
          ++it) {
       it->second.offset = current_offset;
       if (debug_)
         printf("  \"%s\": filename=\"%s\" offset=0x%x tag=%d fmt=%d\n",
                it->first.c_str(),
                it->second.filename.c_str(),
                it->second.offset,
                it->second.data.tag,
                it->second.data.format);
       current_offset += sizeof(ImageInfo) +
         it->second.data.compressed_size;
       /* Make it 4-byte aligned. */
       if ((current_offset & 3) > 0) {
         current_offset = (current_offset & ~3) + 4;
       }
     }
     /* And leave room for the locale_index string */
     if (config_.locale_names.size()) {
       config_.header.locale_string_offset = current_offset;
       current_offset += config_.locale_names.size();
     }

     bmpblock_.resize(current_offset);

     /* Fill BmpBlockHeader struct. */
     string::iterator current_filled = bmpblock_.begin();
     std::copy(reinterpret_cast<char*>(&config_.header),
               reinterpret_cast<char*>(&config_.header + 1),
               current_filled);
     current_filled += sizeof(config_.header);
     current_offset = sizeof(config_.header);

     /* Fill all ScreenLayout structs. */
     for (unsigned int i = 0; i < config_.localizations.size(); ++i) {
       for (unsigned int j = 0; j < config_.localizations[i].size(); ++j) {
         ScreenConfig &screen = config_.screens_map[config_.localizations[i][j]];
         for (unsigned int k = 0;
              k < MAX_IMAGE_IN_LAYOUT && !screen.image_names[k].empty();
              ++k) {
           if (config_.images_map.find(screen.image_names[k]) ==
               config_.images_map.end()) {
             error("Invalid image name \"%s\"\n", screen.image_names[k].c_str());
           }
           if (debug_)
             printf("i=%d j=%d k=%d=\"%s\" (%d,%d) ofs=%x\n", i,j,k,
                    screen.image_names[k].c_str(),
                    screen.data.images[k].x, screen.data.images[k].y,
                    config_.images_map[screen.image_names[k]].offset
               );
           screen.data.images[k].image_info_offset =
             config_.images_map[screen.image_names[k]].offset;
         }
         std::copy(reinterpret_cast<char*>(&screen.data),
                   reinterpret_cast<char*>(&screen.data + 1),
                   current_filled);
         current_filled += sizeof(screen.data);
         if (debug_)
           printf("S: current offset is 0x%08x\n", current_offset);
         current_offset += sizeof(screen.data);
       }
     }

     /* Fill all ImageInfo structs and image contents. */
     for (StrImageConfigMap::iterator it = config_.images_map.begin();
          it != config_.images_map.end();
          ++it) {
       current_filled = bmpblock_.begin() + it->second.offset;
       current_offset = it->second.offset;
       if (debug_)
         printf("I0: current offset is 0x%08x\n", current_offset);
       std::copy(reinterpret_cast<char*>(&it->second.data),
                 reinterpret_cast<char*>(&it->second.data + 1),
                 current_filled);
       current_filled += sizeof(it->second.data);
       current_offset += sizeof(it->second.data);
       if (debug_)
         printf("I1: current offset is 0x%08x (len %zd)\n",
                current_offset, it->second.compressed_content.length());
       std::copy(it->second.compressed_content.begin(),
                 it->second.compressed_content.end(),
                 current_filled);
     }

     /* Fill in locale_names. */
     if (config_.header.locale_string_offset) {
       current_offset = config_.header.locale_string_offset;
       current_filled = bmpblock_.begin() + current_offset;
       if (debug_)
         printf("locale_names: offset 0x%08x (len %zd)\n",
                current_offset, config_.locale_names.size());
       std::copy(config_.locale_names.begin(),
                 config_.locale_names.end(),
                 current_filled);
     }
   }

   void BmpBlockUtil::write_to_bmpblock(const char *filename) {
     assert(!bmpblock_.empty());

     FILE *fp = fopen(filename, "wb");
     if (!fp) {
       perror(filename);
       exit(errno);
     }

     int r = fwrite(bmpblock_.c_str(), bmpblock_.size(), 1, fp);
     fclose(fp);
     if (r != 1) {
       perror(filename);
       exit(errno);
     }
   }

 }  // namespace vboot_reference

 #ifndef FOR_LIBRARY

   //////////////////////////////////////////////////////////////////////////////
   // Command line utilities.

   extern "C" {
 #include "bmpblk_util.h"
   }

   using vboot_reference::BmpBlockUtil;

   // utility function: provide usage of this utility and exit.
   static void usagehelp_exit(const char *prog_name) {
     printf(
       "\n"
       "To create a new BMPBLOCK file using config from YAML file:\n"
       "\n"
       "  %s [-z NUM] -c YAML BMPBLOCK\n"
       "\n"
       "    -z NUM  = compression algorithm to use\n"
       "              0 = none\n"
       "              1 = EFIv1\n"
       "              2 = LZMA1\n"
       "\n", prog_name);
     printf(
       "To display the contents of a BMPBLOCK:\n"
       "\n"
       "  %s [-y] BMPBLOCK\n"
       "\n"
       "    -y  = display as yaml\n"
       "\n", prog_name);
     printf(
       "To unpack a BMPBLOCK file:\n"
       "\n"
       "  %s -x [-d DIR] [-f] BMPBLOCK\n"
       "\n"
       "    -d DIR  = directory to use (default '.')\n"
       "    -f      = force overwriting existing files\n"
       "\n", prog_name);
     exit(1);
   }

   ///////////////////////////////////////////////////////////////////////
   // main

   int main(int argc, char *argv[]) {

     const char *prog_name = strrchr(argv[0], '/');
     if (prog_name)
       prog_name++;
     else
       prog_name = argv[0];

     int overwrite = 0, extract_mode = 0;
     int compression = 0;
     int set_compression = 0;
     const char *config_fn = 0, *bmpblock_fn = 0, *extract_dir = ".";
     int show_as_yaml = 0;
     bool debug = false;

     int opt;
     opterr = 0;                           // quiet
     int errorcnt = 0;
     char *e = 0;
     while ((opt = getopt(argc, argv, ":c:xz:fd:yD")) != -1) {
       switch (opt) {
       case 'c':
         config_fn = optarg;
         break;
       case 'x':
         extract_mode = 1;
         break;
       case 'y':
         show_as_yaml = 1;
         break;
       case 'z':
         compression = (int)strtoul(optarg, &e, 0);
         if (!*optarg || (e && *e)) {
           fprintf(stderr, "%s: invalid argument to -%c: \"%s\"\n",
                   prog_name, opt, optarg);
           errorcnt++;
         }
         if (compression >= MAX_COMPRESS) {
           fprintf(stderr, "%s: compression type must be less than %d\n",
                   prog_name, MAX_COMPRESS);
           errorcnt++;
         }
         set_compression = 1;
         break;
       case 'f':
         overwrite = 1;
         break;
       case 'd':
         extract_dir= optarg;
         break;
       case 'D':
         debug = true;
         break;
       case ':':
         fprintf(stderr, "%s: missing argument to -%c\n",
                 prog_name, optopt);
         errorcnt++;
         break;
       default:
         fprintf(stderr, "%s: unrecognized switch: -%c\n",
                 prog_name, optopt);
         errorcnt++;
         break;
       }
     }
     argc -= optind;
     argv += optind;

     if (argc >= 1) {
       bmpblock_fn = argv[0];
     } else {
       fprintf(stderr, "%s: missing BMPBLOCK name\n", prog_name);
       errorcnt++;
     }

     if (errorcnt)
       usagehelp_exit(prog_name);

     BmpBlockUtil util(debug);

     if (config_fn) {
       if (set_compression)
         util.force_compression(compression);
       util.load_from_config(config_fn);
       util.pack_bmpblock();
       util.write_to_bmpblock(bmpblock_fn);
     }

     else if (extract_mode) {
       return dump_bmpblock(bmpblock_fn, 1, extract_dir, overwrite);
     } else {
       return dump_bmpblock(bmpblock_fn, show_as_yaml, 0, 0);
     }

     return 0;
   }

 #endif // FOR_LIBRARY
	// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.
	//
	// Utility for manipulating firmware screen block (BMPBLOCK) in GBB.
	//

	#include <assert.h>
	#include <errno.h>
	#include <getopt.h>
	#include <lzma.h>
	#include <stdarg.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <yaml.h>

	#include "bmpblk_utility.h"
	#include "image_types.h"
	#include "vboot_api.h"

	extern "C" {
	#include "eficompress.h"
	}


	static void error(const char *format, ...) {
	va_list ap;
	va_start(ap, format);
	fprintf(stderr, "ERROR: ");
	vfprintf(stderr, format, ap);
	va_end(ap);
	exit(1);
	}

	///////////////////////////////////////////////////////////////////////
	// BmpBlock Utility implementation

	namespace vboot_reference {

	BmpBlockUtil::BmpBlockUtil(bool debug) {
	major_version_ = BMPBLOCK_MAJOR_VERSION;
	minor_version_ = BMPBLOCK_MINOR_VERSION;
	config_.config_filename.clear();
	memset(&config_.header, '\0', BMPBLOCK_SIGNATURE_SIZE);
	config_.images_map.clear();
	config_.screens_map.clear();
	config_.localizations.clear();
	bmpblock_.clear();
	set_compression_ = false;
	compression_ = COMPRESS_NONE;
	debug_ = debug;
	render_hwid_ = true;
	support_font_ = true;
	got_font_ = false;
	got_rtol_font_ = false;
	}

	BmpBlockUtil::~BmpBlockUtil() {
	}

	void BmpBlockUtil::force_compression(uint32_t compression) {
	compression_ = compression;
	set_compression_ = true;
	}

	void BmpBlockUtil::load_from_config(const char *filename) {
	load_yaml_config(filename);
	fill_bmpblock_header();
	load_all_image_files();
	}

	void BmpBlockUtil::load_yaml_config(const char *filename) {
	yaml_parser_t parser;

	config_.config_filename = filename;
	config_.images_map.clear();
	config_.screens_map.clear();
	config_.localizations.clear();
	config_.locale_names.clear();

	FILE *fp = fopen(filename, "rb");
	if (!fp) {
	perror(filename);
	exit(errno);
	}

	yaml_parser_initialize(&parser);
	yaml_parser_set_input_file(&parser, fp);
	parse_config(&parser);
	yaml_parser_delete(&parser);
	fclose(fp);


	// TODO: Check the yaml file for self-consistency. Warn on any problems.
	// All images should be used somewhere in the screens.
	// All images referenced in the screens should be defined.
	// All screens should be used somewhere in the localizations.
	// All screens referenced in the localizations should be defined.
	// The number of localizations should match the number of locale_index

	if (debug_) {
	printf("%zd image_names\n", config_.image_names.size());
	for (unsigned int i = 0; i < config_.image_names.size(); ++i) {
	printf(" %d: \"%s\"\n", i, config_.image_names[i].c_str());
	}
	printf("%zd images_map\n", config_.images_map.size());
	for (StrImageConfigMap::iterator it = config_.images_map.begin();
	it != config_.images_map.end();
	++it) {
	printf(" \"%s\": filename=\"%s\" offset=0x%x tag=%d fmt=%d\n",
	it->first.c_str(),
	it->second.filename.c_str(),
	it->second.offset,
	it->second.data.tag,
	it->second.data.format);
	}
	printf("%zd screens_map\n", config_.screens_map.size());
	for (StrScreenConfigMap::iterator it = config_.screens_map.begin();
	it != config_.screens_map.end();
	++it) {
	printf(" \"%s\":\n", it->first.c_str());
	for (int k=0; k<MAX_IMAGE_IN_LAYOUT; k++) {
	printf(" %d: \"%s\" (%d,%d) ofs=0x%x\n",
	k,
	it->second.image_names[k].c_str(),
	it->second.data.images[k].x,
	it->second.data.images[k].y,
	it->second.data.images[k].image_info_offset);
	}
	}
	}
	}

	void BmpBlockUtil::expect_event(yaml_parser_t *parser,
	const yaml_event_type_e type) {
	yaml_event_t event;
	yaml_parser_parse(parser, &event);
	if (event.type != type) {
	error("Syntax error.\n");
	}
	yaml_event_delete(&event);
	}

	void BmpBlockUtil::parse_config(yaml_parser_t *parser) {
	expect_event(parser, YAML_STREAM_START_EVENT);
	expect_event(parser, YAML_DOCUMENT_START_EVENT);
	parse_first_layer(parser);
	expect_event(parser, YAML_DOCUMENT_END_EVENT);
	expect_event(parser, YAML_STREAM_END_EVENT);
	}

	void BmpBlockUtil::parse_first_layer(yaml_parser_t *parser) {
	yaml_event_t event;
	string keyword;
	expect_event(parser, YAML_MAPPING_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SCALAR_EVENT:
	keyword = (char*)event.data.scalar.value;
	if (keyword == "bmpblock") {
	parse_bmpblock(parser);
	} else if (keyword == "compression") {
	parse_compression(parser);
	} else if (keyword == "images") {
	parse_images(parser);
	} else if (keyword == "screens") {
	parse_screens(parser);
	} else if (keyword == "localizations") {
	parse_localizations(parser);
	} else if (keyword == "locale_index") {
	parse_locale_index(parser);
	}
	break;
	case YAML_MAPPING_END_EVENT:
	yaml_event_delete(&event);
	return;
	default:
	error("Syntax error in parsing config file.\n");
	}
	yaml_event_delete(&event);
	}
	}

	void BmpBlockUtil::parse_bmpblock(yaml_parser_t *parser) {
	yaml_event_t event;
	yaml_parser_parse(parser, &event);
	if (event.type != YAML_SCALAR_EVENT) {
	error("Syntax error in parsing bmpblock.\n");
	}
	string gotversion = (char*)event.data.scalar.value;
	if (gotversion != "2.0") {
	error("Unsupported version specified in config file (%s)\n",
	gotversion.c_str());
	}
	yaml_event_delete(&event);
	}

	void BmpBlockUtil::parse_compression(yaml_parser_t *parser) {
	yaml_event_t event;
	yaml_parser_parse(parser, &event);
	if (event.type != YAML_SCALAR_EVENT) {
	error("Syntax error in parsing bmpblock.\n");
	}
	char comp_str = (char )event.data.scalar.value;
	char *e = 0;
	uint32_t comp = (uint32_t)strtoul(comp_str, &e, 0);
	if (!comp_str \|\| (e && e) \|\| comp >= MAX_COMPRESS) {
	error("Invalid compression specified in config file (%d)\n", comp);
	}
	if (!set_compression_) {
	compression_ = comp;
	}
	yaml_event_delete(&event);
	}

	void BmpBlockUtil::parse_images(yaml_parser_t *parser) {
	yaml_event_t event;
	string image_name, image_filename;
	expect_event(parser, YAML_MAPPING_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SCALAR_EVENT:
	image_name = (char*)event.data.scalar.value;
	yaml_event_delete(&event);
	yaml_parser_parse(parser, &event);
	if (event.type != YAML_SCALAR_EVENT) {
	error("Syntax error in parsing images.\n");
	}
	image_filename = (char*)event.data.scalar.value;
	config_.image_names.push_back(image_name);
	config_.images_map[image_name] = ImageConfig();
	config_.images_map[image_name].filename = image_filename;
	if (image_name == RENDER_HWID) {
	got_font_ = true;
	}
	if (image_name == RENDER_HWID_RTOL) {
	got_rtol_font_ = true;
	}
	break;
	case YAML_MAPPING_END_EVENT:
	yaml_event_delete(&event);
	return;
	default:
	error("Syntax error in parsing images.\n");
	}
	yaml_event_delete(&event);
	}
	}

	void BmpBlockUtil::parse_layout(yaml_parser_t *parser, ScreenConfig &screen) {
	yaml_event_t event;
	int depth = 0, index1 = 0, index2 = 0;
	expect_event(parser, YAML_SEQUENCE_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SEQUENCE_START_EVENT:
	depth++;
	break;
	case YAML_SCALAR_EVENT:
	switch (index2) {
	case 0:
	screen.data.images[index1].x = atoi((char*)event.data.scalar.value);
	break;
	case 1:
	screen.data.images[index1].y = atoi((char*)event.data.scalar.value);
	break;
	case 2:
	screen.image_names[index1] = (char*)event.data.scalar.value;
	// Detect the special case where we're rendering the HWID string
	// instead of displaying a bitmap. The image name may not
	// exist in the list of images (v1.1), but we will still need an
	// ImageInfo struct to remember where to draw the text.
	// Note that v1.2 requires that the image name DOES exist, because
	// the corresponding file is used to hold the font glpyhs.
	if (render_hwid_) {
	if (screen.image_names[index1] == RENDER_HWID) {
	config_.images_map[RENDER_HWID].data.tag = TAG_HWID;
	if (support_font_ && !got_font_)
	error("Font required in 'image:' section for %s\n",
	RENDER_HWID);
	} else if (screen.image_names[index1] == RENDER_HWID_RTOL) {
	config_.images_map[RENDER_HWID_RTOL].data.tag = TAG_HWID_RTOL;
	if (support_font_ && !got_rtol_font_)
	error("Font required in 'image:' section for %s\n",
	RENDER_HWID_RTOL);
	}
	}
	break;
	default:
	error("Syntax error in parsing layout\n");
	}
	index2++;
	break;
	case YAML_SEQUENCE_END_EVENT:
	if (depth == 1) {
	index1++;
	index2 = 0;
	} else if (depth == 0) {
	yaml_event_delete(&event);
	return;
	}
	depth--;
	break;
	default:
	error("Syntax error in paring layout.\n");
	}
	yaml_event_delete(&event);
	}
	}

	void BmpBlockUtil::parse_screens(yaml_parser_t *parser) {
	yaml_event_t event;
	string screen_name;
	expect_event(parser, YAML_MAPPING_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SCALAR_EVENT:
	screen_name = (char*)event.data.scalar.value;
	config_.screens_map[screen_name] = ScreenConfig();
	parse_layout(parser, config_.screens_map[screen_name]);
	break;
	case YAML_MAPPING_END_EVENT:
	yaml_event_delete(&event);
	return;
	default:
	error("Syntax error in parsing screens.\n");
	}
	yaml_event_delete(&event);
	}
	}

	void BmpBlockUtil::parse_localizations(yaml_parser_t *parser) {
	yaml_event_t event;
	int depth = 0, index = 0;
	expect_event(parser, YAML_SEQUENCE_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SEQUENCE_START_EVENT:
	config_.localizations.push_back(vector<string>());
	depth++;
	break;
	case YAML_SCALAR_EVENT:
	config_.localizations[index].push_back((char*)event.data.scalar.value);
	break;
	case YAML_SEQUENCE_END_EVENT:
	if (depth == 1) {
	index++;
	} else if (depth == 0) {
	yaml_event_delete(&event);
	return;
	}
	depth--;
	break;
	default:
	error("Syntax error in parsing localizations.\n");
	}
	yaml_event_delete(&event);
	}
	}

	void BmpBlockUtil::parse_locale_index(yaml_parser_t *parser) {
	yaml_event_t event;
	expect_event(parser, YAML_SEQUENCE_START_EVENT);
	for (;;) {
	yaml_parser_parse(parser, &event);
	switch (event.type) {
	case YAML_SCALAR_EVENT:
	config_.locale_names.append((char*)event.data.scalar.value);
	config_.locale_names.append(1, (char)'\0'); // '\0' to delimit
	break;
	case YAML_SEQUENCE_END_EVENT:
	yaml_event_delete(&event);
	config_.locale_names.append(1, (char)'\0'); // double '\0' to terminate
	return;
	default:
	error("Syntax error in parsing localizations.\n");
	}
	}
	}

	void BmpBlockUtil::load_all_image_files() {
	for (unsigned int i = 0; i < config_.image_names.size(); i++) {
	StrImageConfigMap::iterator it =
	config_.images_map.find(config_.image_names[i]);
	if (debug_) {
	printf("loading image \"%s\" from \"%s\"\n",
	config_.image_names[i].c_str(),
	it->second.filename.c_str());
	}
	const string &content = read_image_file(it->second.filename.c_str());
	it->second.raw_content = content;
	it->second.data.original_size = content.size();
	it->second.data.format =
	identify_image_type(content.c_str(),
	(uint32_t)content.size(), &it->second.data);
	if (FORMAT_INVALID == it->second.data.format) {
	error("Unsupported image format in %s\n", it->second.filename.c_str());
	}
	switch(compression_) {
	case COMPRESS_NONE:
	it->second.data.compression = compression_;
	it->second.compressed_content = content;
	it->second.data.compressed_size = content.size();
	break;
	case COMPRESS_EFIv1:
	{
	// The content will always compress smaller (so sez the docs).
	uint32_t tmpsize = content.size();
	uint8_t tmpbuf = (uint8_t )malloc(tmpsize);
	// The size of the compressed content is also returned.
	if (EFI_SUCCESS != EfiCompress((uint8_t *)content.c_str(), tmpsize,
	tmpbuf, &tmpsize)) {
	error("Unable to compress!\n");
	}
	it->second.data.compression = compression_;
	it->second.compressed_content.assign((const char *)tmpbuf, tmpsize);
	it->second.data.compressed_size = tmpsize;
	free(tmpbuf);
	}
	break;
	case COMPRESS_LZMA1:
	{
	// Calculate the worst case of buffer size.
	uint32_t tmpsize = lzma_stream_buffer_bound(content.size());
	uint8_t tmpbuf = (uint8_t )malloc(tmpsize);
	lzma_stream stream = LZMA_STREAM_INIT;
	lzma_options_lzma options;
	lzma_ret result;

	lzma_lzma_preset(&options, 9);
	result = lzma_alone_encoder(&stream, &options);
	if (result != LZMA_OK) {
	error("Unable to initialize easy encoder (error: %d)!\n", result);
	}

	stream.next_in = (uint8_t *)content.data();
	stream.avail_in = content.size();
	stream.next_out = tmpbuf;
	stream.avail_out = tmpsize;
	result = lzma_code(&stream, LZMA_FINISH);
	if (result != LZMA_STREAM_END) {
	error("Unable to encode data (error: %d)!\n", result);
	}

	it->second.data.compression = compression_;
	it->second.compressed_content.assign((const char *)tmpbuf,
	tmpsize - stream.avail_out);
	it->second.data.compressed_size = tmpsize - stream.avail_out;
	lzma_end(&stream);
	free(tmpbuf);
	}
	break;
	default:
	error("Unsupported compression method attempted.\n");
	}
	}
	}

	const string BmpBlockUtil::read_image_file(const char *filename) {
	string content;
	vector<char> buffer;

	FILE *fp = fopen(filename, "rb");
	if (!fp) {
	perror(filename);
	exit(errno);
	}

	if (fseek(fp, 0, SEEK_END) == 0) {
	buffer.resize(ftell(fp));
	rewind(fp);
	}

	if (!buffer.empty()) {
	if(fread(&buffer[0], buffer.size(), 1, fp) != 1) {
	perror(filename);
	buffer.clear();
	} else {
	content.assign(buffer.begin(), buffer.end());
	}
	}

	fclose(fp);
	return content;
	}

	void BmpBlockUtil::fill_bmpblock_header() {
	memset(&config_.header, '\0', sizeof(config_.header));
	memcpy(&config_.header.signature, BMPBLOCK_SIGNATURE,
	BMPBLOCK_SIGNATURE_SIZE);
	config_.header.major_version = major_version_;
	config_.header.minor_version = minor_version_;
	config_.header.number_of_localizations = config_.localizations.size();
	config_.header.number_of_screenlayouts = config_.localizations[0].size();
	// NOTE: this is part of the yaml consistency check
	for (unsigned int i = 1; i < config_.localizations.size(); ++i) {
	assert(config_.header.number_of_screenlayouts ==
	config_.localizations[i].size());
	}
	config_.header.number_of_imageinfos = config_.images_map.size();
	config_.header.locale_string_offset = 0; // Filled by pack_bmpblock()
	}

	void BmpBlockUtil::pack_bmpblock() {
	bmpblock_.clear();

	/* Compute the ImageInfo offsets from start of BMPBLOCK. */
	uint32_t current_offset = sizeof(BmpBlockHeader) +
	sizeof(ScreenLayout) * (config_.header.number_of_localizations *
	config_.header.number_of_screenlayouts);
	for (StrImageConfigMap::iterator it = config_.images_map.begin();
	it != config_.images_map.end();
	++it) {
	it->second.offset = current_offset;
	if (debug_)
	printf(" \"%s\": filename=\"%s\" offset=0x%x tag=%d fmt=%d\n",
	it->first.c_str(),
	it->second.filename.c_str(),
	it->second.offset,
	it->second.data.tag,
	it->second.data.format);
	current_offset += sizeof(ImageInfo) +
	it->second.data.compressed_size;
	/* Make it 4-byte aligned. */
	if ((current_offset & 3) > 0) {
	current_offset = (current_offset & ~3) + 4;
	}
	}
	/* And leave room for the locale_index string */
	if (config_.locale_names.size()) {
	config_.header.locale_string_offset = current_offset;
	current_offset += config_.locale_names.size();
	}

	bmpblock_.resize(current_offset);

	/* Fill BmpBlockHeader struct. */
	string::iterator current_filled = bmpblock_.begin();
	std::copy(reinterpret_cast<char*>(&config_.header),
	reinterpret_cast<char*>(&config_.header + 1),
	current_filled);
	current_filled += sizeof(config_.header);
	current_offset = sizeof(config_.header);

	/* Fill all ScreenLayout structs. */
	for (unsigned int i = 0; i < config_.localizations.size(); ++i) {
	for (unsigned int j = 0; j < config_.localizations[i].size(); ++j) {
	ScreenConfig &screen = config_.screens_map[config_.localizations[i][j]];
	for (unsigned int k = 0;
	k < MAX_IMAGE_IN_LAYOUT && !screen.image_names[k].empty();
	++k) {
	if (config_.images_map.find(screen.image_names[k]) ==
	config_.images_map.end()) {
	error("Invalid image name \"%s\"\n", screen.image_names[k].c_str());
	}
	if (debug_)
	printf("i=%d j=%d k=%d=\"%s\" (%d,%d) ofs=%x\n", i,j,k,
	screen.image_names[k].c_str(),
	screen.data.images[k].x, screen.data.images[k].y,
	config_.images_map[screen.image_names[k]].offset
	);
	screen.data.images[k].image_info_offset =
	config_.images_map[screen.image_names[k]].offset;
	}
	std::copy(reinterpret_cast<char*>(&screen.data),
	reinterpret_cast<char*>(&screen.data + 1),
	current_filled);
	current_filled += sizeof(screen.data);
	if (debug_)
	printf("S: current offset is 0x%08x\n", current_offset);
	current_offset += sizeof(screen.data);
	}
	}

	/* Fill all ImageInfo structs and image contents. */
	for (StrImageConfigMap::iterator it = config_.images_map.begin();
	it != config_.images_map.end();
	++it) {
	current_filled = bmpblock_.begin() + it->second.offset;
	current_offset = it->second.offset;
	if (debug_)
	printf("I0: current offset is 0x%08x\n", current_offset);
	std::copy(reinterpret_cast<char*>(&it->second.data),
	reinterpret_cast<char*>(&it->second.data + 1),
	current_filled);
	current_filled += sizeof(it->second.data);
	current_offset += sizeof(it->second.data);
	if (debug_)
	printf("I1: current offset is 0x%08x (len %zd)\n",
	current_offset, it->second.compressed_content.length());
	std::copy(it->second.compressed_content.begin(),
	it->second.compressed_content.end(),
	current_filled);
	}

	/* Fill in locale_names. */
	if (config_.header.locale_string_offset) {
	current_offset = config_.header.locale_string_offset;
	current_filled = bmpblock_.begin() + current_offset;
	if (debug_)
	printf("locale_names: offset 0x%08x (len %zd)\n",
	current_offset, config_.locale_names.size());
	std::copy(config_.locale_names.begin(),
	config_.locale_names.end(),
	current_filled);
	}
	}

	void BmpBlockUtil::write_to_bmpblock(const char *filename) {
	assert(!bmpblock_.empty());

	FILE *fp = fopen(filename, "wb");
	if (!fp) {
	perror(filename);
	exit(errno);
	}

	int r = fwrite(bmpblock_.c_str(), bmpblock_.size(), 1, fp);
	fclose(fp);
	if (r != 1) {
	perror(filename);
	exit(errno);
	}
	}

	} // namespace vboot_reference

	#ifndef FOR_LIBRARY

	//////////////////////////////////////////////////////////////////////////////
	// Command line utilities.

	extern "C" {
	#include "bmpblk_util.h"
	}

	using vboot_reference::BmpBlockUtil;

	// utility function: provide usage of this utility and exit.
	static void usagehelp_exit(const char *prog_name) {
	printf(
	"\n"
	"To create a new BMPBLOCK file using config from YAML file:\n"
	"\n"
	" %s [-z NUM] -c YAML BMPBLOCK\n"
	"\n"
	" -z NUM = compression algorithm to use\n"
	" 0 = none\n"
	" 1 = EFIv1\n"
	" 2 = LZMA1\n"
	"\n", prog_name);
	printf(
	"To display the contents of a BMPBLOCK:\n"
	"\n"
	" %s [-y] BMPBLOCK\n"
	"\n"
	" -y = display as yaml\n"
	"\n", prog_name);
	printf(
	"To unpack a BMPBLOCK file:\n"
	"\n"
	" %s -x [-d DIR] [-f] BMPBLOCK\n"
	"\n"
	" -d DIR = directory to use (default '.')\n"
	" -f = force overwriting existing files\n"
	"\n", prog_name);
	exit(1);
	}

	///////////////////////////////////////////////////////////////////////
	// main

	int main(int argc, char *argv[]) {

	const char *prog_name = strrchr(argv[0], '/');
	if (prog_name)
	prog_name++;
	else
	prog_name = argv[0];

	int overwrite = 0, extract_mode = 0;
	int compression = 0;
	int set_compression = 0;
	const char config_fn = 0, bmpblock_fn = 0, *extract_dir = ".";
	int show_as_yaml = 0;
	bool debug = false;

	int opt;
	opterr = 0; // quiet
	int errorcnt = 0;
	char *e = 0;
	while ((opt = getopt(argc, argv, ":c:xz:fd:yD")) != -1) {
	switch (opt) {
	case 'c':
	config_fn = optarg;
	break;
	case 'x':
	extract_mode = 1;
	break;
	case 'y':
	show_as_yaml = 1;
	break;
	case 'z':
	compression = (int)strtoul(optarg, &e, 0);
	if (!optarg \|\| (e && e)) {
	fprintf(stderr, "%s: invalid argument to -%c: \"%s\"\n",
	prog_name, opt, optarg);
	errorcnt++;
	}
	if (compression >= MAX_COMPRESS) {
	fprintf(stderr, "%s: compression type must be less than %d\n",
	prog_name, MAX_COMPRESS);
	errorcnt++;
	}
	set_compression = 1;
	break;
	case 'f':
	overwrite = 1;
	break;
	case 'd':
	extract_dir= optarg;
	break;
	case 'D':
	debug = true;
	break;
	case ':':
	fprintf(stderr, "%s: missing argument to -%c\n",
	prog_name, optopt);
	errorcnt++;
	break;
	default:
	fprintf(stderr, "%s: unrecognized switch: -%c\n",
	prog_name, optopt);
	errorcnt++;
	break;
	}
	}
	argc -= optind;
	argv += optind;

	if (argc >= 1) {
	bmpblock_fn = argv[0];
	} else {
	fprintf(stderr, "%s: missing BMPBLOCK name\n", prog_name);
	errorcnt++;
	}

	if (errorcnt)
	usagehelp_exit(prog_name);

	BmpBlockUtil util(debug);

	if (config_fn) {
	if (set_compression)
	util.force_compression(compression);
	util.load_from_config(config_fn);
	util.pack_bmpblock();
	util.write_to_bmpblock(bmpblock_fn);
	}

	else if (extract_mode) {
	return dump_bmpblock(bmpblock_fn, 1, extract_dir, overwrite);
	} else {
	return dump_bmpblock(bmpblock_fn, show_as_yaml, 0, 0);
	}

	return 0;
	}

	#endif // FOR_LIBRARY