Hi all,
I am writing a program that parses out the .git/index file. I am
reading the git index header documentation, but I seem to be getting
jibberish data.
https://github.com/git/git/blob/master/Documentation/technical/index-format.txt
The first 12 bytes are the signature, version and entries. Great so far.
Afterwards, I try to read the extension signature, which the
documentation says: "4-byte extension signature. If the first byte is
'A'..'Z' the
extension is optional and can be ignored.". I am getting jibberish. Is
this expected?
Then, the extension size comes back as 35560000 (after ntohl()). That
seems extremely high. My structure is as follows:
struct _indexfile_hdr {
unsigned char sig[4]; /* Always "DIRC" */
uint32_t version; /* Version Number */
uint32_t entries; /* Number of extensions */
unsigned char extsig[4]; /* Extension signature */
uint32_t extsize; /* Size of the extension */
uint8_t sha[8]; /* SHA1 of index before checksum */
} __packed;
Am I doing something wrong? Is there some offset or padding that I missed?
Thanks,
--
Farhan Khan
PGP Fingerprint: B28D 2726 E2BC A97E 3854 5ABE 9A9F 00BC D525 16EE
