/**
* @brief xor hash the file given
*
* @see
* @note
* @author auxten <*****@*****.**>
* @date 2011-8-1
**/
unsigned xor_hash_file(unsigned value, FILE * fd, off_t * off, size_t * count,
u_char * buf)
{
fseeko(fd, *off, SEEK_SET);
if (FAIL_CHECK(*count != fread(buf, sizeof(char), *count, fd)))
{
GKOLOG(FATAL, "fread error");
}
///fprintf(stderr, "#######################buf: %s\n", buf);
return xor_hash(buf, *count, value);
}
void printChosen(char* s, unsigned size, struct information info) {
printf("Length: %u bytes\n", size-1);
if(info.hex) {
if(info.doXor)
printf("XOR: 0x%02x\n", xor_hash(s, size));
if(info.doCrc16)
printf("CRC-16: 0x%04x\n", crc_16(s, size));
if(info.doCrc32)
printf("CRC-32: 0x%08x\n", crc_32(s, size));
} else {
if(info.doXor)
printf("XOR: %u\n", xor_hash(s, size));
if(info.doCrc16)
printf("CRC-16: %u\n", crc_16(s, size));
if(info.doCrc32)
printf("CRC-32: %u\n", crc_32(s, size));
}
if(info.doMd5) {
printf("MD5: ");
printMD5(s, size);
printf("\n");
}
}
/**
* @brief generate snap file path with requested localpath and requested remote uri
*
* @see
* @note
* return the hash result from xor_hash(uri, strlen(uri), 0)
* the snap file path is stored in snap_fpath
* @return 0 for error
* uri_hash for succ
* @author auxten <*****@*****.**>
* @date 2011-8-1
**/
unsigned gen_snap_fpath(char *snap_fpath, const char * localpath,
const char * uri)
{
if (!snap_fpath || !localpath || !uri)
{
GKOLOG(FATAL, "%s %s passed NULL p", __FILE__, __func__);
return 0;
}
char out_path[MAX_PATH_LEN] = {'\0'};
strncpy(out_path, localpath, MAX_PATH_LEN);
inplace_strip_tailing_slash(out_path);
if (!cwd_path_to_abs_path(snap_fpath, out_path))
{
GKOLOG(WARNING, "cwd_path_to_abs_path failed '%s' '%s'", snap_fpath,
out_path);
return 0;
}
/** cut the tailing file in path **/
if (!(path_type(snap_fpath) & GKO_DIR))
{
int idx;
if ((idx = get_base_name_index(NULL, snap_fpath)) < 0)
{
GKOLOG(WARNING, "gen_snap_fpath failed '%s' '%s' '%s'", snap_fpath,
out_path, uri);
return 0;
}
*(snap_fpath + idx) = '\0';
}
int snap_fpath_len = strlen(snap_fpath);
unsigned uri_hash = xor_hash(uri, strlen(uri), 0);
snprintf(snap_fpath + snap_fpath_len, MAX_PATH_LEN - snap_fpath_len,
"/%s%u", GKO_SNAP_FILE, uri_hash);
GKOLOG(NOTICE, "gko.snap_fpath: '%s'", snap_fpath);
return uri_hash;
}
/**
* @brief check if the fnv check sum is OK
*
* @see
* @note
* @author auxten <*****@*****.**>
* @date 2011-8-1
**/
char digest_ok(void * buf, s_block_t * b)
{
return (xor_hash(buf, b->size, 0) == b->digest);
}