addon.c

   1 #ifndef ADDON_C
   2 #define ADDON_C
   3
   4 #include "addon.h"
   5 #include "vg/vg_msg.h"
   6 #include "steam.h"
   7
   8 static u32 addon_count( enum workshop_file_type type ){
   9    return addon_system.registry_type_counts[ type ];
  10 }
  11
  12 /* these kind of suck, oh well. */
  13 static addon_reg *get_addon_from_index(enum workshop_file_type type, u32 index){
  14    u32 count = 0;
  15    for( u32 i=0; count<addon_count(type); i++ ){
  16       addon_reg *reg = &addon_system.registry[i];
  17       if( reg->type == type ){
  18          if( index == count )
  19             return reg;
  20
  21          count ++;
  22       }
  23    }
  24
  25    return NULL;
  26 }
  27
  28 static u32 get_index_from_addon( enum workshop_file_type type, addon_reg *a ){
  29    u32 count = 0;
  30    for( u32 i=0; count<addon_system.registry_type_counts[type]; i++ ){
  31       addon_reg *reg = &addon_system.registry[i];
  32       if( reg->type == type ){
  33          if( reg == a )
  34             return count;
  35
  36          count ++;
  37       }
  38    }
  39
  40    return 0xffffffff;
  41 }
  42
  43 static void addon_system_init( void ){
  44    u32 reg_size   = sizeof(addon_reg)*ADDON_MOUNTED_MAX;
  45    addon_system.registry = vg_linear_alloc( vg_mem.rtmemory, reg_size );
  46 }
  47
  48 /*
  49  * Scanning routines
  50  * -----------------------------------------------------------------------------
  51  */
  52
  53 /*
  54  * Reciever for scan completion. copies the registry counts back into main fred
  55  */
  56 VG_STATIC void async_addon_reg_update( void *data, u32 size )
  57 {
  58    vg_info( "Registry update notify\n" );
  59
  60    for( u32 i=0; i<k_workshop_file_type_max; i++ ){
  61       addon_system.registry_type_counts[i] = 0;
  62    }
  63
  64    for( u32 i=0; i<addon_system.registry_count; i++ ){
  65       addon_system.registry_type_counts[ addon_system.registry[i].type ] ++;
  66    }
  67 }
  68
  69 VG_STATIC void addon_set_foldername( addon_reg *reg, const char name[64] ){
  70    vg_strncpy( name, reg->foldername, 64, k_strncpy_always_add_null );
  71    reg->foldername_hash = vg_strdjb2( reg->foldername );
  72 }
  73
  74 /*
  75  * Create a new registry
  76  */
  77 VG_STATIC addon_reg *addon_alloc_reg( PublishedFileId_t workshop_id,
  78                                       enum workshop_file_type type ){
  79    if( addon_system.registry_count == ADDON_MOUNTED_MAX ){
  80       vg_error( "You have too many addons installed!\n" );
  81       return NULL;
  82    }
  83
  84    addon_reg *reg = &addon_system.registry[ addon_system.registry_count ];
  85    reg->metadata_len = 0;
  86    reg->userdata = NULL;
  87    reg->state = k_addon_state_indexed;
  88    reg->workshop_id = workshop_id;
  89    reg->foldername[0] = '\0';
  90    reg->type = type;
  91
  92    if( workshop_id ){
  93       char foldername[64];
  94       snprintf( foldername, 64, PRINTF_U64, workshop_id );
  95       addon_set_foldername( reg, foldername );
  96    }
  97    return reg;
  98 }
  99
 100 /*
 101  * If the addon.inf exists int the folder, load into the reg
 102  */
 103 VG_STATIC int addon_try_load_metadata( addon_reg *reg, vg_str folder_path ){
 104    vg_str meta_path = folder_path;
 105    vg_strcat( &meta_path, "/addon.inf" );
 106    if( !vg_strgood( &meta_path ) ){
 107       vg_error( "The metadata path is too long\n" );
 108       return 0;
 109    }
 110
 111    FILE *fp = fopen( meta_path.buffer, "rb" );
 112    if( !fp ){
 113       vg_error( "Could not open the '%s'\n", meta_path.buffer );
 114       return 0;
 115    }
 116
 117    reg->metadata_len = fread( reg->metadata, 1, 512, fp );
 118    if( reg->metadata_len != 512 ){
 119       if( !feof(fp) ){
 120          fclose(fp);
 121          vg_error( "unknown error codition" );
 122          reg->metadata_len = 0;
 123          return 0;
 124       }
 125    }
 126    fclose(fp);
 127    return 1;
 128 }
 129
 130 VG_STATIC void addon_print_info( addon_reg *reg ){
 131    vg_info( "addon_reg #%u{\n", addon_system.registry_count );
 132    vg_info( "  type: %d\n", reg->type );
 133    vg_info( "  workshop_id: " PRINTF_U64 "\n", reg->workshop_id );
 134    vg_info( "  folder: [%u]%s\n", reg->foldername_hash, reg->foldername );
 135    vg_info( "  metadata_len: %u\n", reg->metadata_len );
 136    vg_info( "  userdata: %p\n", reg->userdata );
 137    vg_info( "}\n" );
 138 }
 139
 140 VG_STATIC void addon_mount_finish( addon_reg *reg ){
 141    addon_system.registry_count ++;
 142 }
 143
 144 /*
 145  * Mount a fully packaged addon, one that certainly has a addon.inf
 146  */
 147 VG_STATIC addon_reg *addon_mount_workshop_folder( PublishedFileId_t workshop_id,
 148                                                   vg_str folder_path )
 149 {
 150    addon_reg *reg = addon_alloc_reg( workshop_id, k_workshop_file_type_none );
 151    if( !reg ) return NULL;
 152
 153    if( !addon_try_load_metadata( reg, folder_path ) ){
 154       return NULL;
 155    }
 156
 157    enum workshop_file_type type = k_workshop_file_type_none;
 158    vg_msg root;
 159    vg_msg_init( &root, reg->metadata, reg->metadata_len );
 160    vg_msg workshop = root;
 161    if( vg_msg_seekframe( &workshop, "workshop", k_vg_msg_first )){
 162       vg_msg_cmd kv_type = vg_msg_seekkv( &workshop, "type", k_vg_msg_first );
 163       if( kv_type.code & k_vg_msg_code_integer ){
 164          type = kv_type.value._u32;
 165       }
 166    }
 167
 168    if( type == k_workshop_file_type_none ){
 169       vg_error( "Cannot determine addon type\n" );
 170       return NULL;
 171    }
 172
 173    reg->type = type;
 174    addon_mount_finish( reg );
 175    return reg;
 176 }
 177
 178 /*
 179  * Mount a local folder. may or may not have addon.inf
 180  */
 181 VG_STATIC addon_reg *addon_mount_local_addon( const char *folder,
 182                                               enum workshop_file_type type,
 183                                               const char *content_ext )
 184 {
 185    char folder_path_buf[4096];
 186    vg_str folder_path;
 187    vg_strnull( &folder_path, folder_path_buf, 4096 );
 188    vg_strcat( &folder_path, folder );
 189
 190    const char *folder_name = vg_strch( &folder_path, '/' );
 191    u32 folder_hash = vg_strdjb2(folder_name);
 192    for( u32 i=0; i<addon_system.registry_count; i++ ){
 193       addon_reg *reg = &addon_system.registry[i];
 194
 195       if( (reg->type == type) && (reg->foldername_hash == folder_hash) ){
 196          if( !strcmp( reg->foldername, folder_name ) ){
 197             reg->state = k_addon_state_indexed;
 198             return NULL;
 199          }
 200       }
 201    }
 202
 203    addon_reg *reg = addon_alloc_reg( 0, type );
 204    if( !reg ) return NULL;
 205    addon_set_foldername( reg, folder_name );
 206    addon_try_load_metadata( reg, folder_path );
 207
 208    if( reg->metadata_len == 0 ){
 209       /* create our own content commands */
 210       vg_msg msg;
 211       vg_msg_init( &msg, reg->metadata, sizeof(reg->metadata) );
 212
 213       u32 content_count = 0;
 214
 215       vg_strcat( &folder_path, "" );
 216       vg_warn( "Creating own metadata for: %s\n", folder_path.buffer );
 217
 218       vg_dir subdir;
 219       if( !vg_dir_open(&subdir, folder_path.buffer) ){
 220          vg_error( "Failed to open '%s'\n", folder_path.buffer );
 221          return NULL;
 222       }
 223
 224       while( vg_dir_next_entry(&subdir) ){
 225          if( vg_dir_entry_type(&subdir) == k_vg_entry_type_file ){
 226             const char *fname = vg_dir_entry_name(&subdir);
 227             vg_str file = folder_path;
 228             vg_strcat( &file, "/" );
 229             vg_strcat( &file, fname );
 230             if( !vg_strgood( &file ) ) continue;
 231
 232             char *ext = vg_strch( &file, '.' );
 233             if( !ext ) continue;
 234             if( strcmp(ext,content_ext) ) continue;
 235
 236             vg_msg_wkvstr( &msg, "content", fname );
 237             content_count ++;
 238          }
 239       }
 240       vg_dir_close(&subdir);
 241
 242       if( !content_count ) return NULL;
 243       if( msg.error == k_vg_msg_error_OK )
 244          reg->metadata_len = msg.cur;
 245       else{
 246          vg_error( "Error creating metadata: %d\n", msg.error );
 247          return NULL;
 248       }
 249    }
 250
 251    addon_mount_finish( reg );
 252    return reg;
 253 }
 254
 255 /*
 256  * Check all subscribed items
 257  */
 258 VG_STATIC void addon_mount_workshop_items(void){
 259    if( !steam_ready ) return;
 260    /*
 261     * Steam workshop scan
 262     */
 263    vg_info( "Mounting steam workshop subscriptions\n" );
 264    PublishedFileId_t workshop_ids[ ADDON_MOUNTED_MAX ];
 265    u32 workshop_count = ADDON_MOUNTED_MAX;
 266
 267    vg_async_item *call = vg_async_alloc(
 268                            sizeof(struct async_workshop_installed_files_info));
 269    struct async_workshop_installed_files_info *info = call->payload;
 270    info->buffer = workshop_ids;
 271    info->len = &workshop_count;
 272    vg_async_dispatch( call, async_workshop_get_installed_files );
 273    vg_async_stall();
 274
 275    for( u32 j=0; j<workshop_count; j++ ){
 276       /* check for existance in both our caches
 277        * ----------------------------------------------------------*/
 278       PublishedFileId_t id = workshop_ids[j];
 279       for( u32 i=0; i<addon_system.registry_count; i++ ){
 280          addon_reg *reg = &addon_system.registry[i];
 281
 282          if( reg->workshop_id == id ){
 283             reg->state = k_addon_state_indexed;
 284             goto next_file_workshop;
 285          }
 286       }
 287
 288       vg_async_item *call1 =
 289          vg_async_alloc( sizeof(struct async_workshop_filepath_info) );
 290
 291       char path[ 4096 ];
 292
 293       struct async_workshop_filepath_info *info = call1->payload;
 294       info->buf = path;
 295       info->id = id;
 296       info->len = vg_list_size(path);
 297       vg_async_dispatch( call1, async_workshop_get_filepath );
 298       vg_async_stall(); /* too bad! */
 299
 300       vg_str folder = {.buffer = path, .i=strlen(path), .len=4096};
 301       addon_mount_workshop_folder( id, folder );
 302 next_file_workshop:;
 303    }
 304 }
 305
 306 /*
 307  * Scan a local content folder for addons. It must find at least one file with
 308  * the specified content_ext to be considered.
 309  */
 310 VG_STATIC void addon_mount_content_folder( enum workshop_file_type type,
 311                                            const char *base_folder,
 312                                            const char *content_ext )
 313 {
 314    vg_info( "Mounting addons(type:%d) matching skaterift/%s/*/*%s\n",
 315                   type, base_folder, content_ext );
 316
 317    char path_buf[4096];
 318    vg_str path;
 319    vg_strnull( &path, path_buf, 4096 );
 320    vg_strcat( &path, base_folder );
 321
 322    vg_dir dir;
 323    if( !vg_dir_open(&dir,path.buffer) ){
 324       vg_error( "vg_dir_open('%s') failed\n", path.buffer );
 325       vg_async_call( workshop_async_any_complete, NULL, 0 );
 326       return;
 327    }
 328
 329    vg_strcat(&path,"/");
 330
 331    while( vg_dir_next_entry(&dir) ){
 332       if( vg_dir_entry_type(&dir) == k_vg_entry_type_dir ){
 333          const char *d_name = vg_dir_entry_name(&dir);
 334
 335          vg_str folder = path;
 336          if( strlen( d_name ) > ADDON_FOLDERNAME_MAX ){
 337             vg_warn( "folder too long: %s\n", d_name );
 338             continue;
 339          }
 340
 341          vg_strcat( &folder, d_name );
 342          if( !vg_strgood( &folder ) ) continue;
 343
 344          addon_mount_local_addon( folder.buffer, type, content_ext );
 345       }
 346    }
 347    vg_dir_close(&dir);
 348 }
 349
 350 #endif /* ADDON_C */