-/**
- Routine to get hex characters and turn them into a 16 byte array.
- the array can be variable length, and any non-hex-numeric
- characters are skipped. "0xnn" or "0Xnn" is specially catered
- for.
-
- valid examples: "0A5D15"; "0x15, 0x49, 0xa2"; "59\ta9\te3\n"
-
-**/
-
-size_t strhex_to_str(char *buf, size_t buf_len, const char *strhex, size_t strhex_len)
-{
- size_t i;
- size_t num_chars = 0;
- unsigned char lonybble, hinybble;
- const char *hexchars = "0123456789ABCDEF";
- char *p1 = NULL, *p2 = NULL;
-
- for (i = 0; i < strhex_len && strhex[i] != 0; i++) {
- if (strnequal(hexchars, "0x", 2)) {
- i++; /* skip two chars */
- continue;
- }
-
- if (!(p1 = strchr_m(hexchars, toupper_ascii(strhex[i]))))
- break;
-
- i++; /* next hex digit */
-
- if (!(p2 = strchr_m(hexchars, toupper_ascii(strhex[i]))))
- break;
-
- /* get the two nybbles */
- hinybble = PTR_DIFF(p1, hexchars);
- lonybble = PTR_DIFF(p2, hexchars);
-
- if (num_chars >= buf_len) {
- break;
- }
- buf[num_chars] = (hinybble << 4) | lonybble;
- num_chars++;
-
- p1 = NULL;
- p2 = NULL;
- }
- return num_chars;
-}
-
-DATA_BLOB strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *strhex)
-{
- DATA_BLOB ret_blob;
-
- if (mem_ctx != NULL)
- ret_blob = data_blob_talloc(mem_ctx, NULL, strlen(strhex)/2+1);
- else
- ret_blob = data_blob(NULL, strlen(strhex)/2+1);
-
- ret_blob.length = strhex_to_str((char*)ret_blob.data,
- ret_blob.length,
- strhex,
- strlen(strhex));
-
- return ret_blob;
-}
-
-/**
- * Routine to print a buffer as HEX digits, into an allocated string.
- */
-
-char *hex_encode(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len)
-{
- int i;
- char *hex_buffer;
-
- hex_buffer = TALLOC_ARRAY(mem_ctx, char, (len*2)+1);
-
- for (i = 0; i < len; i++)
- slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
-
- return hex_buffer;
-}
-