/* FileHandler - General-purpose file handling library for Niotso trcn.c - Copyright (c) 2012 Niotso Project Author(s): Ahmed El-Mahdawy Fatbag Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "iffparser.h" int iff_parse_trcn(IFFChunk * ChunkInfo, const uint8_t * Buffer){ IFFRangeSet *RangeSet; bytestream b; unsigned i; if(ChunkInfo->Size < 16) return 0; set_bytestream(&b, Buffer, ChunkInfo->Size); ChunkInfo->FormattedData = calloc(1, sizeof(IFFRangeSet)); if(ChunkInfo->FormattedData == NULL) return 0; RangeSet = ChunkInfo->FormattedData; RangeSet->Reserved = read_uint32(&b); RangeSet->Version = read_uint32(&b); memcpy(RangeSet->MagicNumber, b.Buffer, 4); skipbytes(&b, 4); RangeSet->RangeCount = read_uint32(&b); if(RangeSet->Reserved != 0 || RangeSet->Version > 2) return 0; if(RangeSet->RangeCount == 0) return 1; RangeSet->Ranges = calloc(RangeSet->RangeCount, sizeof(IFFRangeEntry)); if(RangeSet->Ranges == NULL) return 0; for(i=0; iRangeCount; i++){ unsigned s; IFFRangeEntry * Range = &RangeSet->Ranges[i]; if(b.Size < 10) return 0; Range->IsUsed = read_uint32(&b); Range->DefaultValue = read_uint32(&b); for(s=0; s<2; s++){ char ** string = (s==0) ? &Range->Name : &Range->Comment; if(b.Size == 0) return 0; if(RangeSet->Version < 2){ /* C string, possible padding */ if(!read_c_string(&b, string)) return 0; /* Skip past the 0xA3 character; ** see global.iff chunk 546 for why you can't do modulo-2 to detect this */ if(b.Size && *b.Buffer == 0xA3) skipbytes(&b, 1); }else{ /* Extended Pascal string, no padding */ if(!read_pascal2_string(&b, string)) return 0; } } if(RangeSet->Version != 0){ if(b.Size < 5) return 0; Range->Enforced = read_uint8(&b); Range->RangeMin = read_uint16(&b); Range->RangeMax = read_uint16(&b); } } return 1; } void iff_free_trcn(void * FormattedData){ IFFRangeSet *RangeSet = FormattedData; if(RangeSet->Ranges){ unsigned i; for(i=0; iRangeCount; i++){ IFFRangeEntry *Entry = &RangeSet->Ranges[i]; free(Entry->Name); free(Entry->Comment); } } free(RangeSet->Ranges); }