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Augmented checksum tags for superblock and tree by parameter next=

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for unambigous linking.
This commit is contained in:
Thomas Schmitt
2009-08-16 16:58:41 +02:00
parent b4e2a60cd9
commit 955471a064
8 changed files with 90 additions and 59 deletions
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11
libisofs/util.c
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@ -1565,7 +1565,7 @@ int iso_util_hex_to_bin(char *hex, char *bin, int bin_size, int *bin_count,
int iso_util_decode_md5_tag(char data[2048], uint32_t *pos,
uint32_t *range_start, uint32_t *range_size,
char md5[16], int flag)
uint32_t *next_tag, char md5[16], int flag)
{
static char *tag_magic[4] = {"",
"libisofs_checksum_tag_v1",
@ -1576,6 +1576,7 @@ int iso_util_decode_md5_tag(char data[2048], uint32_t *pos,
char *cpt, self_md5[16], tag_md5[16];
void *ctx = NULL;
*next_tag = 0;
mode = flag & 255;
if (mode > magic_last)
return ISO_WRONG_ARG_VALUE;
@ -1606,6 +1607,14 @@ int iso_util_decode_md5_tag(char data[2048], uint32_t *pos,
ret = iso_util_dec_to_uint32(cpt + 11, range_size, 0);
if (ret <= 0)
return 0;
if (found == 2 || found == 3) {
cpt = strstr(cpt, "next=");
if (cpt == NULL)
return(0);
ret = iso_util_dec_to_uint32(cpt + 5, next_tag, 0);
if (ret <= 0)
return 0;
}
cpt = strstr(cpt, "md5=");
if (cpt == NULL)
return(0);