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_mount_finish( 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    addon_system.registry_count ++;
 140 }
 141
 142 /*
 143  * Mount a fully packaged addon, one that certainly has a addon.inf
 144  */
 145 VG_STATIC void addon_mount_workshop_folder( PublishedFileId_t workshop_id,
 146                                             vg_str folder_path )
 147 {
 148    addon_reg *reg = addon_alloc_reg( workshop_id, k_workshop_file_type_none );
 149    if( !reg ) return;
 150
 151    if( !addon_try_load_metadata( reg, folder_path ) ){
 152       return;
 153    }
 154
 155    enum workshop_file_type type = k_workshop_file_type_none;
 156    vg_msg msg;
 157    vg_msg_init( &msg, reg->metadata, reg->metadata_len );
 158    vg_msg_cmd cmd;
 159    while( vg_msg_next( &msg, &cmd ) ){
 160       if( (msg.depth == 1) && (cmd.code == k_vg_msg_code_frame) ){
 161          if( VG_STRDJB2_EQ( "workshop", cmd.key, cmd.key_djb2 ) ){
 162             u32 depth = msg.depth;
 163             while( (msg.depth == depth) && vg_msg_next( &msg, &cmd ) ){
 164                if( cmd.code & k_vg_msg_code_unsigned ){
 165                   if( VG_STRDJB2_EQ( "type", cmd.key, cmd.key_djb2 ) ){
 166                      type = cmd.value._u32;
 167                   }
 168                }
 169             }
 170          }
 171       }
 172    }
 173
 174    if( type == k_workshop_file_type_none ){
 175       vg_error( "Cannot determine addon type\n" );
 176       return;
 177    }
 178
 179    reg->type = type;
 180    addon_mount_finish( reg );
 181 }
 182
 183 /*
 184  * Check all subscribed items
 185  */
 186 VG_STATIC void addon_mount_workshop_items(void){
 187    if( !steam_ready ) return;
 188    /*
 189     * Steam workshop scan
 190     */
 191    vg_info( "Mounting steam workshop subscriptions\n" );
 192    PublishedFileId_t workshop_ids[ ADDON_MOUNTED_MAX ];
 193    u32 workshop_count = ADDON_MOUNTED_MAX;
 194
 195    vg_async_item *call = vg_async_alloc(
 196                            sizeof(struct async_workshop_installed_files_info));
 197    struct async_workshop_installed_files_info *info = call->payload;
 198    info->buffer = workshop_ids;
 199    info->len = &workshop_count;
 200    vg_async_dispatch( call, async_workshop_get_installed_files );
 201    vg_async_stall();
 202
 203    for( u32 j=0; j<workshop_count; j++ ){
 204       /* check for existance in both our caches
 205        * ----------------------------------------------------------*/
 206       PublishedFileId_t id = workshop_ids[j];
 207       for( u32 i=0; i<addon_system.registry_count; i++ ){
 208          addon_reg *reg = &addon_system.registry[i];
 209
 210          if( reg->workshop_id == id ){
 211             reg->state = k_addon_state_indexed;
 212             goto next_file_workshop;
 213          }
 214       }
 215
 216       /* new one, lets find out what type it is
 217        * ---------------------------------------------------------------*/
 218       vg_async_item *call1 =
 219          vg_async_alloc( sizeof(struct async_workshop_filepath_info) );
 220
 221       char path[ 4096 ];
 222
 223       struct async_workshop_filepath_info *info = call1->payload;
 224       info->buf = path;
 225       info->id = id;
 226       info->len = vg_list_size(path);
 227       vg_async_dispatch( call1, async_workshop_get_filepath );
 228       vg_async_stall(); /* too bad! */
 229
 230       vg_str folder = {.buffer = path, .i=strlen(path), .len=4096};
 231       addon_mount_workshop_folder( id, folder );
 232 next_file_workshop:;
 233    }
 234 }
 235
 236 /*
 237  * Scan a local content folder for addons. It must find at least one file with
 238  * the specified content_ext to be considered.
 239  */
 240 VG_STATIC void addon_mount_local_folder( enum workshop_file_type type,
 241                                          const char *base_folder,
 242                                          const char *content_ext )
 243 {
 244    vg_info( "Mounting addons(type:%d) matching skaterift/%s/*/*%s\n",
 245                   type, base_folder, content_ext );
 246
 247    char path_buf[4096];
 248    vg_str path;
 249    vg_strnull( &path, path_buf, 4096 );
 250    vg_strcat( &path, base_folder );
 251
 252    vg_dir dir;
 253    if( !vg_dir_open(&dir,path.buffer) ){
 254       vg_error( "vg_dir_open('%s') failed\n", path.buffer );
 255       vg_async_call( workshop_async_any_complete, NULL, 0 );
 256       return;
 257    }
 258
 259    vg_strcat(&path,"/");
 260
 261    while( vg_dir_next_entry(&dir) ){
 262       if( vg_dir_entry_type(&dir) == k_vg_entry_type_dir ){
 263          const char *d_name = vg_dir_entry_name(&dir);
 264
 265          vg_str folder = path;
 266          char *folder_name = folder.buffer+folder.i;
 267
 268          if( strlen( d_name ) > ADDON_FOLDERNAME_MAX ){
 269             vg_warn( "folder too long: %s\n", d_name );
 270             continue;
 271          }
 272
 273          vg_strcat( &folder, d_name );
 274          if( !vg_strgood( &folder ) ) continue;
 275
 276          int present = 0;
 277          u32 folder_hash = vg_strdjb2(folder_name);
 278          for( u32 i=0; i<addon_system.registry_count; i++ ){
 279             addon_reg *reg = &addon_system.registry[i];
 280
 281             if( (reg->type == type) && (reg->foldername_hash == folder_hash) ){
 282                if( !strcmp( reg->foldername, folder_name ) ){
 283                   reg->state = k_addon_state_indexed;
 284                   present = 1;
 285                   break;
 286                }
 287             }
 288          }
 289
 290          if( !present ){
 291             addon_reg *reg = addon_alloc_reg( 0, type );
 292             if( !reg ) continue;
 293             addon_set_foldername( reg, folder_name );
 294             addon_try_load_metadata( reg, folder );
 295
 296             if( reg->metadata_len == 0 ){
 297                /* create our own content commands */
 298                vg_msg msg;
 299                vg_msg_init( &msg, reg->metadata, sizeof(reg->metadata) );
 300
 301                u32 content_count = 0;
 302
 303                vg_strcat( &folder, "" );
 304                vg_warn( "Creating own metadata for: %s\n", folder.buffer );
 305
 306                vg_dir subdir;
 307                if( !vg_dir_open(&subdir, folder.buffer) ){
 308                   vg_error( "Failed to open '%s'\n", folder.buffer );
 309                   continue;
 310                }
 311
 312                while( vg_dir_next_entry(&subdir) ){
 313                   if( vg_dir_entry_type(&subdir) == k_vg_entry_type_file ){
 314                      const char *fname = vg_dir_entry_name(&subdir);
 315                      vg_str file = folder;
 316                      vg_strcat( &file, "/" );
 317                      vg_strcat( &file, fname );
 318                      if( !vg_strgood( &file ) ) continue;
 319
 320                      char *ext = vg_strch( &file, '.' );
 321                      if( !ext ) continue;
 322                      if( strcmp(ext,content_ext) ) continue;
 323
 324                      vg_msg_wkvstr( &msg, "content", fname );
 325                      content_count ++;
 326                   }
 327                }
 328                vg_dir_close(&subdir);
 329
 330                if( !content_count ){
 331                   continue;
 332                }
 333
 334                if( msg.error == k_vg_msg_error_OK )
 335                   reg->metadata_len = msg.cur;
 336                else{
 337                   vg_error( "Error creating metadata: %d\n", msg.error );
 338                   continue;
 339                }
 340             }
 341
 342             addon_mount_finish( reg );
 343          }
 344       }
 345    }
 346    vg_dir_close(&dir);
 347 }
 348
 349 #if 0
 350 /*
 351  * Async thread which scans local files for addons, as well as scheduling
 352  * synchronous calls to the workshop
 353  *
 354  * Call this from in the loader thread.
 355  */
 356 VG_STATIC void addon_system_scan_all(void){
 357    for( u32 i=0; i<addon_system.registry_count; i++ ){
 358       addon_reg *reg = &addon_system.registry[i];
 359       reg->state = k_addon_state_indexed_absent;
 360    }
 361
 362    if( steam_ready ) addon_mount_workshop_items();
 363
 364    vg_async_call( addon_async_reg_update, NULL, 0 );
 365    vg_async_stall();
 366 }
 367 #endif
 368
 369 #endif /* ADDON_C */