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#include "replace.h"
#include "libcli/util/ntstatus.h"
#include "util_str_hex.h"
NTSTATUS read_hex_bytes(const char *s, uint hexchars, uint64_t *dest)
{
uint64_t x = 0;
uint i;
char c;
if ((hexchars & 1) || hexchars > 16) {
return NT_STATUS_INVALID_PARAMETER;
}
for (i = 0; i < hexchars; i++) {
x <<= 4;
c = s[i];
if (c >= '0' && c <= '9') {
x += c - '0';
}
else if (c >= 'a' && c <= 'f') {
x += c - 'a' + 10;
}
else if (c >= 'A' && c <= 'F') {
x += c - 'A' + 10;
}
else {
/* BAD character (including '\0') */
return NT_STATUS_INVALID_PARAMETER;
}
}
*dest = x;
return NT_STATUS_OK;
}
NTSTATUS parse_guid_string(const char *s,
uint32_t *time_low,
uint32_t *time_mid,
uint32_t *time_hi_and_version,
uint32_t clock_seq[2],
uint32_t node[6])
{
uint64_t tmp;
NTSTATUS status;
int i;
/* "e12b56b6-0a95-11d1-adbb-00c04fd8d5cd"
| | | | |
| | | | \ node[6]
| | | \_____ clock_seq[2]
| | \__________ time_hi_and_version
| \_______________ time_mid
\_____________________ time_low
*/
status = read_hex_bytes(s, 8, &tmp);
if (!NT_STATUS_IS_OK(status) || s[8] != '-') {
return NT_STATUS_INVALID_PARAMETER;
}
*time_low = tmp;
s += 9;
status = read_hex_bytes(s, 4, &tmp);
if (!NT_STATUS_IS_OK(status) || s[4] != '-') {
return NT_STATUS_INVALID_PARAMETER;
}
*time_mid = tmp;
s += 5;
status = read_hex_bytes(s, 4, &tmp);
if (!NT_STATUS_IS_OK(status) || s[4] != '-') {
return NT_STATUS_INVALID_PARAMETER;
}
*time_hi_and_version = tmp;
s += 5;
for (i = 0; i < 2; i++) {
status = read_hex_bytes(s, 2, &tmp);
if (!NT_STATUS_IS_OK(status)) {
return NT_STATUS_INVALID_PARAMETER;
}
clock_seq[i] = tmp;
s += 2;
}
if (s[0] != '-') {
return NT_STATUS_INVALID_PARAMETER;
}
s++;
for (i = 0; i < 6; i++) {
status = read_hex_bytes(s, 2, &tmp);
if (!NT_STATUS_IS_OK(status)) {
return NT_STATUS_INVALID_PARAMETER;
}
node[i] = tmp;
s += 2;
}
return NT_STATUS_OK;
}
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