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| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | LICENSE | 661 | ||||
| -rw-r--r-- | Makefile | 14 | ||||
| -rw-r--r-- | cards.c | 137 | ||||
| -rw-r--r-- | cards.h | 49 | ||||
| -rw-r--r-- | dump.c | 67 |
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diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..eea74f3 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +*.o +dump diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..dba13ed --- /dev/null +++ b/LICENSE @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see <http://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +<http://www.gnu.org/licenses/>. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..b58b5e5 --- /dev/null +++ b/Makefile @@ -0,0 +1,14 @@ +CFLAGS += -Wall -Wextra + +-include config.mk + +BINS = dump +OBJS = cards.o dump.o + +dump: cards.o dump.o + $(CC) $(LDFLAGS) cards.o dump.o $(LDLIBS) -o dump + +$(OBJS): cards.h + +clean: + rm -f $(BINS) $(OBJS) diff --git a/cards.c b/cards.c new file mode 100644 index 0000000..52445a1 --- /dev/null +++ b/cards.c @@ -0,0 +1,137 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdlib.h> +#include <string.h> + +#include "cards.h" + +enum { + MZ_NEOff = 0x3C, + + NE_ResTableOff = 0x24, + + ResTable_AlignShift = 0x00, + ResTable_ResBlock = 0x02, + + ResBlock_TypeID = 0x00, + ResBlock_ResCount = 0x02, + ResBlock_Resource = 0x08, + + TypeID_Bitmap = 0x8002, + + Resource_Off = 0x00, + Resource_Len = 0x02, + Resource_ID = 0x06, + Resource_Next = 0x0C, + + IDMask = 0x7FFF, + + BMPHeader_FileLen = 0x02, + BMPHeader_Reserved = 0x06, + BMPHeader_DataOff = 0x0A, + BMPHeader_DIBHeader = 0x0E, + + DIBHeader_Len = 0x00, + DIBHeaderCore_Bits = 0x0A, + + DIBHeaderCoreLen = 0x0C, +}; + +static uint16_t read16(const uint8_t *ptr, size_t off) { + return (uint16_t)ptr[off] | (uint16_t)ptr[off + 1] << 8; +} +static uint32_t read32(const uint8_t *ptr, size_t off) { + return (uint32_t)ptr[off] + | (uint32_t)ptr[off + 1] << 8 + | (uint32_t)ptr[off + 2] << 16 + | (uint32_t)ptr[off + 3] << 24; +} + +static void write32(uint8_t *ptr, size_t off, uint32_t val) { + ptr[off + 0] = val & 0xFF; + ptr[off + 1] = val >> 8 & 0xFF; + ptr[off + 2] = val >> 16 & 0xFF; + ptr[off + 3] = val >> 24; +} + +int cardsLoad(const uint8_t *ptr, size_t len) { + if (len < MZ_NEOff + 2) return -1; + if (ptr[0] != 'M' || ptr[1] != 'Z') return -1; + + uint16_t neOff = read16(ptr, MZ_NEOff); + + if (len < neOff + NE_ResTableOff + 2) return -1; + if (ptr[neOff + 0] != 'N' || ptr[neOff + 1] != 'E') return -1; + + uint16_t resTableOff = neOff + read16(ptr, neOff + NE_ResTableOff); + + if (len < resTableOff + ResTable_ResBlock) return -1; + + uint16_t alignShift = read16(ptr, resTableOff + ResTable_AlignShift); + + uint16_t resBlockOff = resTableOff + ResTable_ResBlock; + uint16_t resCount; + for (;;) { + if (len < resBlockOff + ResBlock_Resource) return -1; + + uint16_t typeID = read16(ptr, resBlockOff + ResBlock_TypeID); + resCount = read16(ptr, resBlockOff + ResBlock_ResCount); + + if (!typeID) return -1; + if (typeID == TypeID_Bitmap) break; + + resBlockOff += ResBlock_Resource + resCount * Resource_Next; + } + + uint16_t resOff = resBlockOff + ResBlock_Resource; + for (uint16_t i = 0; i < resCount; ++i, resOff += Resource_Next) { + if (len < resOff + Resource_Next) return -1; + + uint16_t id = read16(ptr, resOff + Resource_ID); + if ((id & IDMask) >= CardsLen) continue; + + size_t dataOff = read16(ptr, resOff + Resource_Off); + size_t dataLen = read16(ptr, resOff + Resource_Len); + dataOff <<= alignShift; + dataLen <<= alignShift; + + if (len < dataOff + dataLen) return -1; + if (dataLen < DIBHeaderCoreLen) return -1; + + uint32_t dibHeaderLen = read32(ptr, dataOff + DIBHeader_Len); + uint32_t bmpFileLen = BMPHeader_DIBHeader + dataLen; + uint32_t bmpDataOff = BMPHeader_DIBHeader + dibHeaderLen; + if (dibHeaderLen == DIBHeaderCoreLen) { + bmpDataOff += 3 * (1 << read16(ptr, dataOff + DIBHeaderCore_Bits)); + } + + uint8_t *bitmap = malloc(bmpFileLen); + if (!bitmap) return -1; + + bitmap[0] = 'B'; + bitmap[1] = 'M'; + write32(bitmap, BMPHeader_FileLen, bmpFileLen); + write32(bitmap, BMPHeader_Reserved, 0); + write32(bitmap, BMPHeader_DataOff, bmpDataOff); + memcpy(&bitmap[BMPHeader_DIBHeader], &ptr[dataOff], dataLen); + + cardsData[id & IDMask].ptr = bitmap; + cardsData[id & IDMask].len = bmpFileLen; + } + + return 0; +} diff --git a/cards.h b/cards.h new file mode 100644 index 0000000..65e3c2b --- /dev/null +++ b/cards.h @@ -0,0 +1,49 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef CARDS_H +#define CARDS_H + +#include <stddef.h> +#include <stdint.h> + +enum Cards { + CardsClub = 0x00, + CardsDiamond = 0x0D, + CardsHeart = 0x1A, + CardsSpade = 0x27, + + CardsA = 1, + Cards2, Cards3, Cards4, Cards5, Cards6, Cards7, Cards8, Cards9, Cards10, + CardsJ, CardsQ, CardsK, + + CardsEmpty = 0x35, + CardsBack1, CardsBack2, CardsBack3, CardsBack4, CardsBack5, CardsBack6, + CardsBack7, CardsBack8, CardsBack9, CardsBack10, CardsBack11, CardsBack12, + + CardsX = 0x43, + CardsO, + CardsLen, +}; + +struct CardsData { + uint8_t *ptr; + size_t len; +} cardsData[CardsLen]; + +int cardsLoad(const uint8_t *ptr, size_t len); + +#endif diff --git a/dump.c b/dump.c new file mode 100644 index 0000000..0eefc3c --- /dev/null +++ b/dump.c @@ -0,0 +1,67 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> + +#include "cards.h" + +int main(int argc, char *argv[]) { + FILE *file = stdin; + if (argc > 1) { + file = fopen(argv[1], "r"); + if (!file) err(EX_NOINPUT, "%s", argv[1]); + } + + size_t cap = 4096; + void *ptr = malloc(cap); + if (!ptr) err(EX_OSERR, "malloc"); + + size_t len = 0, read; + while (0 < (read = fread(&ptr[len], 1, cap - len, file))) { + len += read; + if (len < cap) continue; + cap *= 2; + ptr = realloc(ptr, cap); + if (!ptr) err(EX_OSERR, "realloc"); + } + if (ferror(file)) err(EX_IOERR, "fread"); + fclose(file); + + errno = 0; + int error = cardsLoad(ptr, len); + if (error && errno) err(EX_OSERR, "cardsLoad"); + if (error) errx(EX_DATAERR, "cannot load cards"); + + for (size_t i = 0; i < CardsLen; ++i) { + if (!cardsData[i].ptr) continue; + + char name[sizeof("00.bmp")]; + snprintf(name, sizeof(name), "%02zd.bmp", i); + + FILE *file = fopen(name, "w"); + if (!file) err(EX_CANTCREAT, "%s", name); + + fwrite(cardsData[i].ptr, cardsData[i].len, 1, file); + if (ferror(file)) err(EX_IOERR, "fwrite"); + + error = fclose(file); + if (error) err(EX_IOERR, "fclose"); + } +} |