openharmony/third_party_fsverity-utils
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programs: be compatible with -fsanitize=unsigned-integer-overflow

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Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Eric Biggers
2020-06-05 16:51:47 -07:00
parent 28d513fd53
commit d38875c097
1 changed files with 9 additions and 6 deletions
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programs/utils.c
+9 -6
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@@ -176,16 +176,18 @@ static int hex2bin_char(char c)
bool hex2bin(const char *hex, u8 *bin, size_t bin_len)
{
size_t i;
if (strlen(hex) != 2 * bin_len)
return false;
while (bin_len--) {
for (i = 0; i < bin_len; i++) {
int hi = hex2bin_char(*hex++);
int lo = hex2bin_char(*hex++);
if (hi < 0 || lo < 0)
return false;
*bin++ = (hi << 4) | lo;
bin[i] = (hi << 4) | lo;
}
return true;
}
@@ -201,10 +203,11 @@ static char bin2hex_char(u8 nibble)
void bin2hex(const u8 *bin, size_t bin_len, char *hex)
{
while (bin_len--) {
*hex++ = bin2hex_char(*bin >> 4);
*hex++ = bin2hex_char(*bin & 0xf);
bin++;
size_t i;
for (i = 0; i < bin_len; i++) {
*hex++ = bin2hex_char(bin[i] >> 4);
*hex++ = bin2hex_char(bin[i] & 0xf);
}
*hex = '\0';
}