diff options
Diffstat (limited to 'src/common/io.h')
| -rw-r--r-- | src/common/io.h | 92 |
1 files changed, 91 insertions, 1 deletions
diff --git a/src/common/io.h b/src/common/io.h index 82fb41e..7fe9d9d 100644 --- a/src/common/io.h +++ b/src/common/io.h @@ -1,6 +1,6 @@ /* Chrysalide - Outil d'analyse de fichiers binaires - * io.h - prototypes pour des entrées sorties fiables + * io.h - prototypes pour des entrées sorties fiables et la manipulation des nombres * * Copyright (C) 2014-2019 Cyrille Bagard * @@ -29,6 +29,12 @@ #include <sys/types.h> +#include "datatypes.h" + + + +/* ------------------------ ENTREES/SORTIES BRUTES ENCADREES ------------------------ */ + /* Lit des données depuis un flux local. */ bool safe_read(int, void *, size_t); @@ -47,4 +53,88 @@ bool safe_send(int, const void *, size_t, int); +/* --------------------------- CONVERSION ENTRE BOUTISMES --------------------------- */ + + +/* Adapte un nombre sur 16 bits à un boutisme donné. */ +uint16_t swap_u16(const uint16_t *, SourceEndian); + +/* Adapte un nombre sur 16 bits à un boutisme donné. */ +uint32_t swap_u32(const uint32_t *, SourceEndian); + +/* Adapte un nombre sur 16 bits à un boutisme donné. */ +uint64_t swap_u64(const uint64_t *, SourceEndian); + + +#define from_u16(v, e) swap_u16(v, e) +#define from_u32(v, e) swap_u32(v, e) +#define from_u64(v, e) swap_u64(v, e) + + +#define to_u16(v, e) swap_u16(v, e) +#define to_u32(v, e) swap_u32(v, e) +#define to_u64(v, e) swap_u64(v, e) + + + +/* ------------------------- BOUTISME DES ENTREES / SORTIES ------------------------- */ + + +/* Lit un nombre non signé sur 4 bits. */ +bool read_u4(uint8_t *, const bin_t *, phys_t *, phys_t, bool *); + +/* Lit un nombre non signé sur un octet. */ +bool read_u8(uint8_t *, const bin_t *, phys_t *, phys_t); + +/* Lit un nombre non signé sur deux octets. */ +bool read_u16(uint16_t *, const bin_t *, phys_t *, phys_t, SourceEndian); + +/* Lit un nombre non signé sur quatre octets. */ +bool read_u32(uint32_t *, const bin_t *, phys_t *, phys_t, SourceEndian); + +/* Lit un nombre non signé sur huit octets. */ +bool read_u64(uint64_t *, const bin_t *, phys_t *, phys_t, SourceEndian); + + +#define read_s4(target, data, pos, len, low) read_u4((uint8_t *)target, data, pos, len, low) +#define read_s8(target, data, pos, len) read_u8((uint8_t *)target, data, pos, len) +#define read_s16(target, data, pos, len, endian) read_u16((uint16_t *)target, data, pos, len, endian) +#define read_s32(target, data, pos, len, endian) read_u32((uint32_t *)target, data, pos, len, endian) +#define read_s64(target, data, pos, len, endian) read_u64((uint64_t *)target, data, pos, len, endian) + + +/* Ecrit un nombre non signé sur n octets. */ +bool _write_un(const bin_t *, size_t, bin_t *, off_t *, off_t, SourceEndian); + + +#define write_un(value, data, pos, len, endian, type) \ + ({ \ + type __tmp; \ + (void)(value == &__tmp); \ + _write_un((bin_t *)value, sizeof(type), data, pos, len, endian); \ + }) + + +#define write_u8(value, data, pos, len, endian) write_un(value, data, pos, len, endian, uint8_t) +#define write_u16(value, data, pos, len, endian) write_un(value, data, pos, len, endian, uint16_t) +#define write_u32(value, data, pos, len, endian) write_un(value, data, pos, len, endian, uint32_t) +#define write_u64(value, data, pos, len, endian) write_un(value, data, pos, len, endian, uint64_t) + +#define write_s8(value, data, pos, len, endian) write_un(value, data, pos, len, endian, sint8_t) +#define write_s16(value, data, pos, len, endian) write_un(value, data, pos, len, endian, sint16_t) +#define write_s32(value, data, pos, len, endian) write_un(value, data, pos, len, endian, sint32_t) +#define write_s64(value, data, pos, len, endian) write_un(value, data, pos, len, endian, sint64_t) + + +/* Lit un nombre hexadécimal non signé sur deux octets. */ +bool strtou8(uint8_t *, const char *, size_t *, size_t, SourceEndian); + +/* Lit un nombre hexadécimal non signé sur n octets. */ +bool _strtoun(uint8_t, const char *, size_t *, size_t, SourceEndian, ...); + + +#define strtou32(target, data, pos, len, endian) _strtoun(4, data, pos, len, endian, target) + + + #endif /* _COMMON_IO_H */ |