X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffile.cpp;h=4586245656f9e9b4832299bed7ea44c100cb20e6;hb=62587015fb12ec54b1702bfa17077e4b8af44b19;hp=22f3c8fee3d709645ffe7942fb71a2a74d296e12;hpb=07e61d8dcf16099a862baee79b4ec1e06d76b3d4;p=virtualjaguar diff --git a/src/file.cpp b/src/file.cpp index 22f3c8f..4586245 100644 --- a/src/file.cpp +++ b/src/file.cpp @@ -2,15 +2,17 @@ // FILE.CPP // // File support -// by James L. Hammons +// by James Hammons // (C) 2010 Underground Software // -// JLH = James L. Hammons +// JLH = James Hammons // // Who When What -// --- ---------- ------------------------------------------------------------- +// --- ---------- ------------------------------------------------------------ // JLH 01/16/2010 Created this log ;-) -// JLH 02/28/2010 Added functions to look inside .ZIP files and handle contents +// JLH 02/28/2010 Added functions to look inside .ZIP files and handle +// contents +// JLH 06/01/2012 Added function to check ZIP file CRCs against file DB // #include "file.h" @@ -18,6 +20,7 @@ #include #include #include "crc32.h" +#include "filedb.h" #include "eeprom.h" #include "jaguar.h" #include "log.h" @@ -30,7 +33,7 @@ static int gzfilelength(gzFile gd); static bool CheckExtension(const char * filename, const char * ext); -//static int ParseFileType(uint8 header1, uint8 header2, uint32 size); +//static int ParseFileType(uint8_t header1, uint8_t header2, uint32_t size); // Private variables/enums @@ -38,12 +41,12 @@ static bool CheckExtension(const char * filename, const char * ext); // // Generic ROM loading // -uint32 JaguarLoadROM(uint8 * &rom, char * path) +uint32_t JaguarLoadROM(uint8_t * &rom, char * path) { // We really should have some kind of sanity checking for the ROM size here to prevent // a buffer overflow... !!! FIX !!! #warning "!!! FIX !!! Should have sanity checking for ROM size to prevent buffer overflow!" - uint32 romSize = 0; + uint32_t romSize = 0; WriteLog("JaguarLoadROM: Attempting to load file '%s'...", path); char * ext = strrchr(path, '.'); @@ -91,7 +94,7 @@ uint32 JaguarLoadROM(uint8 * &rom, char * path) } romSize = gzfilelength(fp); - rom = new uint8[romSize]; + rom = new uint8_t[romSize]; gzseek(fp, 0, SEEK_SET); gzread(fp, rom, romSize); gzclose(fp); @@ -102,14 +105,16 @@ uint32 JaguarLoadROM(uint8 * &rom, char * path) return romSize; } + // // Jaguar file loading -// We do a more intelligent file analysis here instead of relying on (possible false) -// file extensions which people don't seem to give two shits about anyway. :-( +// We do a more intelligent file analysis here instead of relying on (possible +// false) file extensions which people don't seem to give two shits about +// anyway. :-( // bool JaguarLoadFile(char * path) { - uint8 * buffer = NULL; + uint8_t * buffer = NULL; jaguarROMSize = JaguarLoadROM(buffer, path); if (jaguarROMSize == 0) @@ -125,11 +130,16 @@ bool JaguarLoadFile(char * path) // directory, copy the one from the ZIP file, if it exists. EepromInit(); jaguarRunAddress = 0x802000; // For non-BIOS runs, this is true - int fileType = ParseFileType(buffer[0], buffer[1], jaguarROMSize); + int fileType = ParseFileType(buffer, jaguarROMSize); + jaguarCartInserted = false; if (fileType == JST_ROM) { + jaguarCartInserted = true; memcpy(jagMemSpace + 0x800000, buffer, jaguarROMSize); +// Checking something... +jaguarRunAddress = GET32(jagMemSpace, 0x800404); +WriteLog("FILE: Cartridge run address is reported as $%X...\n", jaguarRunAddress); delete[] buffer; return true; } @@ -151,7 +161,7 @@ bool JaguarLoadFile(char * path) else if (fileType == JST_ABS_TYPE1) { // For ABS type 1, run address == load address - uint32 loadAddress = GET32(buffer, 0x16), + uint32_t loadAddress = GET32(buffer, 0x16), codeSize = GET32(buffer, 0x02) + GET32(buffer, 0x06); WriteLog("FILE: Setting up homebrew (ABS-1)... Run address: %08X, length: %08X\n", loadAddress, codeSize); memcpy(jagMemSpace + loadAddress, buffer + 0x24, codeSize); @@ -161,7 +171,7 @@ bool JaguarLoadFile(char * path) } else if (fileType == JST_ABS_TYPE2) { - uint32 loadAddress = GET32(buffer, 0x28), runAddress = GET32(buffer, 0x24), + uint32_t loadAddress = GET32(buffer, 0x28), runAddress = GET32(buffer, 0x24), codeSize = GET32(buffer, 0x18) + GET32(buffer, 0x1C); WriteLog("FILE: Setting up homebrew (ABS-2)... Run address: %08X, length: %08X\n", runAddress, codeSize); memcpy(jagMemSpace + loadAddress, buffer + 0xA8, codeSize); @@ -169,28 +179,94 @@ bool JaguarLoadFile(char * path) jaguarRunAddress = runAddress; return true; } + // NB: This is *wrong* + /* + Basically, if there is no "JAG" at position $1C, then the long there is the load/start + address in LITTLE ENDIAN. + If "JAG" is present, the the next character ("R" or "L") determines the size of the + JagServer command (2 bytes vs. 4). Following that are the commands themselves; + typically it will either be 2 (load) or 3 (load & run). Command headers go like so: + 2: + Load address (long) + Length (long) + payload + 3: + Load address (long) + Length (long) + Run address (long) + payload + 5: (Reset) + [command only] + 7: (Run at address) + Run address (long) + [no payload] + 9: (Clear memory) + Start address (long) + End address (long) + [no payload] + 10: (Poll for commands) + [command only] + 12: (Load & run user program) + filname, terminated with NULL + [no payload] + $FFFF: (Halt) + [no payload] + */ else if (fileType == JST_JAGSERVER) { - uint32 loadAddress = GET32(buffer, 0x22), runAddress = GET32(buffer, 0x2A); - WriteLog("FILE: Setting up homebrew (Jag Server)... Run address: %08X, length: %08X\n", runAddress, jaguarROMSize - 0x2E); - memcpy(jagMemSpace + loadAddress, buffer + 0x2E, jaguarROMSize - 0x2E); + // This kind of shiaut should be in the detection code below... + // (and now it is! :-) +// if (buffer[0x1C] == 'J' && buffer[0x1D] == 'A' && buffer[0x1E] == 'G') +// { + // Still need to do some checking here for type 2 vs. type 3. This assumes 3 + // Also, JAGR vs. JAGL (word command size vs. long command size) + uint32_t loadAddress = GET32(buffer, 0x22), runAddress = GET32(buffer, 0x2A); + WriteLog("FILE: Setting up homebrew (Jag Server)... Run address: $%X, length: $%X\n", runAddress, jaguarROMSize - 0x2E); + memcpy(jagMemSpace + loadAddress, buffer + 0x2E, jaguarROMSize - 0x2E); + delete[] buffer; + jaguarRunAddress = runAddress; + +// Hmm. Is this kludge necessary? +SET32(jaguarMainRAM, 0x10, 0x00001000); // Set Exception #4 (Illegal Instruction) +SET16(jaguarMainRAM, 0x1000, 0x60FE); // Here: bra Here + + return true; +// } +// else // Special WTFOMGBBQ type here... +// { +// uint32_t loadAddress = (buffer[0x1F] << 24) | (buffer[0x1E] << 16) | (buffer[0x1D] << 8) | buffer[0x1C]; +// WriteLog("FILE: Setting up homebrew (GEMDOS WTFOMGBBQ type)... Run address: $%X, length: $%X\n", loadAddress, jaguarROMSize - 0x20); +// memcpy(jagMemSpace + loadAddress, buffer + 0x20, jaguarROMSize - 0x20); +// delete[] buffer; +// jaguarRunAddress = loadAddress; +// return true; +// } + } + else if (fileType == JST_WTFOMGBBQ) + { + uint32_t loadAddress = (buffer[0x1F] << 24) | (buffer[0x1E] << 16) | (buffer[0x1D] << 8) | buffer[0x1C]; + WriteLog("FILE: Setting up homebrew (GEMDOS WTFOMGBBQ type)... Run address: $%X, length: $%X\n", loadAddress, jaguarROMSize - 0x20); + memcpy(jagMemSpace + loadAddress, buffer + 0x20, jaguarROMSize - 0x20); delete[] buffer; - jaguarRunAddress = runAddress; + jaguarRunAddress = loadAddress; return true; } // We can assume we have JST_NONE at this point. :-P + WriteLog("FILE: Failed to load headerless file.\n"); return false; } + // // "Alpine" file loading -// Since the developers were coming after us with torches and pitchforks, we decided to -// allow this kind of thing. ;-) But ONLY FOR THE DEVS, DAMMIT! >:-U O_O +// Since the developers were coming after us with torches and pitchforks, we +// decided to allow this kind of thing. ;-) But ONLY FOR THE DEVS, DAMMIT! >:-U +// O_O // bool AlpineLoadFile(char * path) { - uint8 * buffer = NULL; + uint8_t * buffer = NULL; jaguarROMSize = JaguarLoadROM(buffer, path); if (jaguarROMSize == 0) @@ -213,14 +289,16 @@ bool AlpineLoadFile(char * path) delete[] buffer; // Maybe instead of this, we could try requiring the STUBULATOR ROM? Just a thought... - // Try setting the vector to say, $1000 and putting an instruction there that loops forever: + // Try setting the vector to say, $1000 and putting an instruction there + // that loops forever: // This kludge works! Yeah! - SET32(jaguarMainRAM, 0x10, 0x00001000); + SET32(jaguarMainRAM, 0x10, 0x00001000); // Set Exception #4 (Illegal Instruction) SET16(jaguarMainRAM, 0x1000, 0x60FE); // Here: bra Here return true; } + // // Get the length of a (possibly) gzipped file // @@ -247,16 +325,17 @@ static int gzfilelength(gzFile gd) return length; } + // // Compare extension to passed in filename. If equal, return true; otherwise false. // -static bool CheckExtension(const char * filename, const char * ext) +static bool CheckExtension(const uint8_t * filename, const char * ext) { // Sanity checking... if ((filename == NULL) || (ext == NULL)) return false; - const char * filenameExt = strrchr(filename, '.'); // Get the file's extension (if any) + const char * filenameExt = strrchr((const char *)filename, '.'); // Get the file's extension (if any) if (filenameExt == NULL) return false; @@ -264,19 +343,21 @@ static bool CheckExtension(const char * filename, const char * ext) return (strcasecmp(filenameExt, ext) == 0 ? true : false); } + // // Get file from .ZIP // Returns the size of the file inside the .ZIP file that we're looking at // NOTE: If the thing we're looking for is found, it allocates it in the passed in buffer. // Which means we have to deallocate it later. // -uint32 GetFileFromZIP(const char * zipFile, FileType type, uint8 * &buffer) +uint32_t GetFileFromZIP(const char * zipFile, FileType type, uint8_t * &buffer) { // NOTE: We could easily check for this by discarding anything that's larger than the RAM/ROM // size of the Jaguar console. #warning "!!! FIX !!! Should have sanity checking for ROM size to prevent buffer overflow!" const char ftStrings[5][32] = { "Software", "EEPROM", "Label", "Box Art", "Controller Overlay" }; - ZIP * zip = openzip(0, 0, zipFile); +// ZIP * zip = openzip(0, 0, zipFile); + FILE * zip = fopen(zipFile, "rb"); if (zip == NULL) { @@ -284,51 +365,59 @@ uint32 GetFileFromZIP(const char * zipFile, FileType type, uint8 * &buffer) return 0; } - zipent * ze; +// zipent * ze; + ZipFileEntry ze; bool found = false; // The order is here is important: If the file is found, we need to short-circuit the // readzip() call because otherwise, 'ze' will be pointing to the wrong file! - while (!found && readzip(zip)) +// while (!found && readzip(zip)) + while (!found && GetZIPHeader(zip, ze)) { - ze = &zip->ent; +// ze = &zip->ent; // Here we simply rely on the file extension to tell the truth, but we know // that extensions lie like sons-a-bitches. So this is naive, we need to do // something a little more robust to keep bad things from happening here. #warning "!!! Checking for image by extension can be fooled !!!" - if ((type == FT_LABEL) && (CheckExtension(ze->name, ".png") || CheckExtension(ze->name, ".jpg") || CheckExtension(ze->name, ".gif"))) + if ((type == FT_LABEL) && (CheckExtension(ze.filename, ".png") || CheckExtension(ze.filename, ".jpg") || CheckExtension(ze.filename, ".gif"))) { found = true; - WriteLog("FILE: Found image file '%s'.\n", ze->name); + WriteLog("FILE: Found image file '%s'.\n", ze.filename); } - if ((type == FT_SOFTWARE) && (CheckExtension(ze->name, ".j64") - || CheckExtension(ze->name, ".rom") || CheckExtension(ze->name, ".abs") - || CheckExtension(ze->name, ".cof") || CheckExtension(ze->name, ".jag"))) + if ((type == FT_SOFTWARE) && (CheckExtension(ze.filename, ".j64") + || CheckExtension(ze.filename, ".rom") || CheckExtension(ze.filename, ".abs") + || CheckExtension(ze.filename, ".cof") || CheckExtension(ze.filename, ".coff") + || CheckExtension(ze.filename, ".jag"))) { found = true; - WriteLog("FILE: Found software file '%s'.\n", ze->name); + WriteLog("FILE: Found software file '%s'.\n", ze.filename); } - if ((type == FT_EEPROM) && (CheckExtension(ze->name, ".eep") || CheckExtension(ze->name, ".eeprom"))) + if ((type == FT_EEPROM) && (CheckExtension(ze.filename, ".eep") || CheckExtension(ze.filename, ".eeprom"))) { found = true; - WriteLog("FILE: Found EEPROM file '%s'.\n", ze->name); + WriteLog("FILE: Found EEPROM file '%s'.\n", ze.filename); } + + if (!found) + fseek(zip, ze.compressedSize, SEEK_CUR); } - uint32 fileSize = 0; + uint32_t fileSize = 0; if (found) { WriteLog("FILE: Uncompressing..."); // Insert file size sanity check here... - buffer = new uint8[ze->uncompressed_size]; + buffer = new uint8_t[ze.uncompressedSize]; - if (readuncompresszip(zip, ze, (char *)buffer) == 0) +// if (readuncompresszip(zip, ze.compressedSize, buffer) == 0) +// if (UncompressFileFromZIP(zip, ze.compressedSize, buffer) == 0) + if (UncompressFileFromZIP(zip, ze, buffer) == 0) { - fileSize = ze->uncompressed_size; + fileSize = ze.uncompressedSize; WriteLog("success! (%u bytes)\n", fileSize); } else @@ -342,34 +431,109 @@ uint32 GetFileFromZIP(const char * zipFile, FileType type, uint8 * &buffer) // Didn't find what we're looking for... WriteLog("FILE: Failed to find file of type %s...\n", ftStrings[type]); - closezip(zip); +// closezip(zip); + fclose(zip); return fileSize; } + +uint32_t GetFileDBIdentityFromZIP(const char * zipFile) +{ + FILE * zip = fopen(zipFile, "rb"); + + if (zip == NULL) + { + WriteLog("FILE: Could not open file '%s'!\n", zipFile); + return 0; + } + + ZipFileEntry ze; + + // Loop through all files in the zip file under consideration + while (GetZIPHeader(zip, ze)) + { + // & loop through all known CRC32s in our file DB to see if it's there! + uint32_t index = 0; + + while (romList[index].crc32 != 0xFFFFFF) + { + if (romList[index].crc32 == ze.crc32) + { + fclose(zip); + return index; + } + + index++; + } + + // We didn't find it, so skip the compressed data... + fseek(zip, ze.compressedSize, SEEK_CUR); + } + + fclose(zip); + return -1; +} + + +bool FindFileInZIPWithCRC32(const char * zipFile, uint32_t crc) +{ + FILE * zip = fopen(zipFile, "rb"); + + if (zip == NULL) + { + WriteLog("FILE: Could not open file '%s'!\n", zipFile); + return 0; + } + + ZipFileEntry ze; + + // Loop through all files in the zip file under consideration + while (GetZIPHeader(zip, ze)) + { + if (ze.crc32 == crc) + { + fclose(zip); + return true; + } + + fseek(zip, ze.compressedSize, SEEK_CUR); + } + + fclose(zip); + return false; +} + + // // Parse the file type based upon file size and/or headers. // -uint32 ParseFileType(uint8 header1, uint8 header2, uint32 size) +uint32_t ParseFileType(uint8_t * buffer, uint32_t size) { // Check headers first... // ABS/COFF type 1 - if (header1 == 0x60 && header2 == 0x1B) + if (buffer[0] == 0x60 && buffer[1] == 0x1B) return JST_ABS_TYPE1; // ABS/COFF type 2 - if (header1 == 0x01 && header2 == 0x50) + if (buffer[0] == 0x01 && buffer[1] == 0x50) return JST_ABS_TYPE2; - // Jag Server - if (header1 == 0x60 && header2 == 0x1A) - return JST_JAGSERVER; + // Jag Server & other old shite + if (buffer[0] == 0x60 && buffer[1] == 0x1A) + { + if (buffer[0x1C] == 'J' && buffer[0x1D] == 'A' && buffer[0x1E] == 'G') + return JST_JAGSERVER; + else + return JST_WTFOMGBBQ; + } // And if that fails, try file sizes... // If the file size is divisible by 1M, we probably have an regular ROM. // We can also check our CRC32 against the internal ROM database to be sure. - if ((size % 1048576) == 0) + // (We also check for the Memory Track cartridge size here as well...) + if ((size % 1048576) == 0 || size == 131072) return JST_ROM; // If the file size + 8192 bytes is divisible by 1M, we probably have an @@ -384,7 +548,7 @@ uint32 ParseFileType(uint8 header1, uint8 header2, uint32 size) // // Check for universal header // -bool HasUniversalHeader(uint8 * rom, uint32 romSize) +bool HasUniversalHeader(uint8_t * rom, uint32_t romSize) { // Sanity check if (romSize < 8192)