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Lots of bug fixes and general code cleanup

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This commit is contained in:
Jfreegman
2015-08-27 03:38:08 -04:00
parent 92d76c7f99
commit 11701d22a1
19 changed files with 247 additions and 173 deletions
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30
src/misc_tools.c
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@ -109,22 +109,27 @@ void get_elapsed_time_str(char *buf, int bufsize, uint64_t secs)
snprintf(buf, bufsize, "%ld:%.2ld:%.2ld", hours, minutes, seconds);
}
char *hex_string_to_bin(const char *hex_string)
/*
* Converts a hexidecimal string of length hex_len to binary format and puts the result in output.
* output_size must be exactly half of hex_len.
*
* Returns 0 on success.
* Returns -1 on failure.
*/
int hex_string_to_bin(const char *hex_string, size_t hex_len, char *output, size_t output_size)
{
size_t len = strlen(hex_string);
char *val = malloc(len);
if (output_size == 0 || hex_len != output_size * 2)
return -1;
if (val == NULL)
exit_toxic_err("failed in hex_string_to_bin", FATALERR_MEMORY);
for (size_t i = 0; i < output_size; ++i) {
sscanf(hex_string, "%2hhx", &output[i]);
hex_string += 2;
}
size_t i;
for (i = 0; i < len; ++i, hex_string += 2)
sscanf(hex_string, "%2hhx", &val[i]);
return val;
return 0;
}
int hex_string_to_bytes(char *buf, int size, const char *keystr)
{
if (size % 2 != 0)
@ -147,6 +152,9 @@ int hex_string_to_bytes(char *buf, int size, const char *keystr)
/* Returns 1 if the string is empty, 0 otherwise */
int string_is_empty(const char *string)
{
if (!string)
return true;
return string[0] == '\0';
}