X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffile.cpp;h=dff0c55a062154366ee50b68191c0ebdfb397a3f;hb=6f25f63a18153bc2adc49c5f9a3862c2760716df;hp=7fd96ef59edaad467be216dbc7e9875928aac9c7;hpb=e285d9bb9ae73f64443fa4add30119dc422c4d08;p=virtualjaguar diff --git a/src/file.cpp b/src/file.cpp index 7fd96ef..dff0c55 100644 --- a/src/file.cpp +++ b/src/file.cpp @@ -2,15 +2,16 @@ // 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 06/01/2012 Added function to check ZIP file CRCs against file DB // #include "file.h" @@ -18,6 +19,7 @@ #include #include #include "crc32.h" +#include "filedb.h" #include "eeprom.h" #include "jaguar.h" #include "log.h" @@ -102,6 +104,7 @@ 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) @@ -125,13 +128,16 @@ 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; } @@ -171,13 +177,71 @@ 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 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; + 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; } @@ -185,6 +249,7 @@ bool JaguarLoadFile(char * path) return false; } + // // "Alpine" file loading // Since the developers were coming after us with torches and pitchforks, we decided to @@ -217,12 +282,13 @@ bool AlpineLoadFile(char * path) // 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: // 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 // @@ -249,16 +315,17 @@ 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 * 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; @@ -266,6 +333,7 @@ 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 @@ -278,7 +346,8 @@ uint32 GetFileFromZIP(const char * zipFile, FileType type, uint8 * &buffer) // 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) { @@ -286,38 +355,44 @@ 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; @@ -326,11 +401,13 @@ uint32 GetFileFromZIP(const char * zipFile, FileType type, uint8 * &buffer) { WriteLog("FILE: Uncompressing..."); // Insert file size sanity check here... - buffer = new uint8[ze->uncompressed_size]; + buffer = new uint8[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 @@ -344,28 +421,102 @@ 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 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 ParseFileType(uint8_t * buffer, uint32 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...