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pcireg: Add lh0 uncompressed file support

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This commit is contained in:
RichardG867
2024-10-24 20:07:53 -03:00
parent d5a07eb644
commit 55a3adb3cc
3 changed files with 12 additions and 13 deletions
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7
pcireg/lh5_extract.c
View File

@@ -88,7 +88,7 @@ static int calc_sum(unsigned char *p, int len)
unsigned int
LH5HeaderParse(unsigned char *Buffer, int BufferSize,
unsigned int *original_size, unsigned int *packed_size,
char **name, unsigned short *crc)
char **name, unsigned short *crc, unsigned char *method)
{
unsigned int offset;
unsigned char header_size, checksum, name_length;
@@ -106,8 +106,9 @@ LH5HeaderParse(unsigned char *Buffer, int BufferSize,
}
/* check method */
if (memcmp(Buffer + 2, "-lh5-", 5) != 0) {
fprintf(stderr, "Error: Compression method is not LZHUFF5.\n");
*method = Buffer[5];
if (Buffer[2] != '-' || Buffer[3] != 'l' || Buffer[4] != 'h' || (*method != '0' && *method != '5') || Buffer[6] != '-') {
fprintf(stderr, "Error: Compression method %c is not supported.\n", method);
return 0;
}

8
pcireg/lh5_extract.h
View File

@@ -22,16 +22,12 @@
unsigned int LH5HeaderParse(unsigned char *Buffer, int BufferSize,
unsigned int *original_size,
unsigned int *packed_size,
char **name, unsigned short *crc);
char **name, unsigned short *crc,
unsigned char *method);
unsigned short CRC16Calculate(unsigned char *Buffer, int BufferSize);
int LH5Decode(unsigned char *PackedBuffer, int PackedBufferSize,
unsigned char *OutputBuffer, int OutputBufferSize);
extern int lzari_in_bruteforce;
int unlzari(unsigned char *in, int insz, unsigned char *out, int outsz, char common);
int unlzh(unsigned char *in, int insz, unsigned char *out, int outsz);
#endif /* LH5_EXTRACT_H */

10
pcireg/pcireg.c
View File

@@ -180,6 +180,7 @@ pciids_open_database(void **ptr, char id)
char *filename;
char target_filename[13];
unsigned short crc;
unsigned char method;
uint8_t *buf = NULL;
/* No action is required if the database is already loaded. */
@@ -204,7 +205,7 @@ pciids_open_database(void **ptr, char id)
break;
/* Parse LHA header. */
header_size = LH5HeaderParse(header, sizeof(header), &original_size, &packed_size, &filename, &crc);
header_size = LH5HeaderParse(header, sizeof(header), &original_size, &packed_size, &filename, &crc, &method);
if (!header_size)
break; /* invalid header */
@@ -216,7 +217,7 @@ pciids_open_database(void **ptr, char id)
*ptr = malloc(original_size);
if (!*ptr)
goto fail;
buf = malloc(packed_size);
buf = (method != '0') ? malloc(packed_size) : *ptr;
if (!buf)
goto fail;
@@ -224,12 +225,13 @@ pciids_open_database(void **ptr, char id)
fseek(f, pos + header_size, SEEK_SET);
if (!fread(buf, packed_size, 1, f))
goto fail;
if (LH5Decode(buf, packed_size, *ptr, original_size) == -1)
if ((method != '0') && (LH5Decode(buf, packed_size, *ptr, original_size) == -1))
goto fail;
/* All done, close archive. */
fclose(f);
free(buf);
if (buf != *ptr)
free(buf);
return 0;
}