diff options
| -rw-r--r-- | src/plugins/mapcache.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/plugins/mapcache.c b/src/plugins/mapcache.c index f1dab97c1..5e44492f6 100644 --- a/src/plugins/mapcache.c +++ b/src/plugins/mapcache.c @@ -341,6 +341,100 @@ bool mapcache_rebuild(void) return true; } +bool fix_md5_truncation_sub(FILE *fp, const char *map_name) +{ + unsigned int file_size; + struct map_cache_header mheader = { 0 }; + uint8 *buf = NULL; + + nullpo_retr(false, fp); + nullpo_retr(false, map_name); + + fseek(fp, 0, SEEK_END); + file_size = (unsigned int)ftell(fp); + fseek(fp, 0, SEEK_SET); // Rewind file pointer before passing it to the read function. + + if (file_size <= sizeof(mheader) || fread(&mheader, sizeof(mheader), 1, fp) < 1) { + ShowError("fix_md5_truncation: Failed to read cache header for map '%s'.\n", map_name); + return false; + } + + if (mheader.len <= 0) { + ShowError("fix_md5_truncation: A file with negative or zero compressed length passed '%d'.\n", mheader.len); + return false; + } + + if (file_size < sizeof(mheader) + mheader.len) { + ShowError("fix_md5_truncation: An incomplete file passed for map '%s'.\n", map_name); + return false; + } + + CREATE(buf, uint8, mheader.len); + if (fread(buf, mheader.len, 1, fp) < 1) { + ShowError("fix_md5_truncation: Could not load the compressed cell data for map '%s'.\n", map_name); + aFree(buf); + return false; + } + + md5->binary(buf, mheader.len, mheader.md5_checksum); + aFree(buf); + + fseek(fp, 0, SEEK_SET); + fwrite(&mheader, sizeof(mheader), 1, fp); + fclose(fp); + + return true; +} + +bool fix_md5_truncation(void) +{ + int i; + bool retval = true; + + if (mapcache_read_maplist("db/map_index.txt") == false) { + ShowError("mapcache_rebuild: Could not read maplist, aborting\n"); + return false; + } + + for (i = 0; i < VECTOR_LENGTH(maplist); ++i) { + const char *map_name = VECTOR_INDEX(maplist, i); + char file_path[255]; + FILE *fp = NULL; + int16 version; + + snprintf(file_path, sizeof(file_path), "%s%s%s.%s", "maps/", DBPATH, map_name, "mcache"); + + fp = fopen(file_path, "r+b"); + + if (fp == NULL) { + ShowWarning("fix_md5_truncation: Could not open the mapcache file for map '%s' at path '%s'.\n", map_name, file_path); + retval = false; + continue; + } + + if (fread(&version, sizeof(version), 1, fp) < 1) { + ShowError("fix_md5_truncation: Could not read file version for map '%s'.\n", map_name); + fclose(fp); + retval = false; + continue; + } + + if (version != 1) { + ShowError("fix_md5_truncation: Mapcache for map '%s' has version %d. The update is only applied to version 1.\n", map_name, version); + fclose(fp); + continue; + } + + ShowStatus("Updating mapcache: %s'\n", map_name); + if (!fix_md5_truncation_sub(fp, map_name)) + retval = false; + + fclose(fp); + } + + return retval; +} + CMDLINEARG(convertmapcache) { map->minimal = true; @@ -363,6 +457,12 @@ CMDLINEARG(cachemap) return mapcache_cache_map(params); } +CMDLINEARG(fixmd5) +{ + map->minimal = true; + return fix_md5_truncation(); +} + HPExport void server_preinit(void) { addArg("--convert-old-mapcache", false, convertmapcache, @@ -371,6 +471,8 @@ HPExport void server_preinit(void) "Rebuilds the entire mapcache folder (maps/"DBPATH"), using db/map_index.txt as index."); addArg("--map", true, cachemap, "Rebuilds an individual map's cache into maps/"DBPATH" (usage: --map <map_name_without_extension>)."); + addArg("--fix-md5", false, fixmd5, + "Updates the checksum for the files in maps/"DBPATH", using db/map_index.txt as index (see PR #1981)."); needs_grfio = false; VECTOR_INIT(maplist); @@ -378,6 +480,10 @@ HPExport void server_preinit(void) HPExport void plugin_final(void) { + while (VECTOR_LENGTH(maplist) > 0) { + char *name = VECTOR_POP(maplist); + aFree(name); + } VECTOR_CLEAR(maplist); if (needs_grfio) grfio->final(); |