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libuuid: check errno after strto..() 

Addresses: https://github.com/karelzak/util-linux/issues/1356
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2021-06-21 15:00:40 +02:00
parent 0729593862
commit 62aa386c4f
1 changed files with 16 additions and 3 deletions
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19
libuuid/src/parse.c
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@ -37,6 +37,7 @@
#include <ctype.h>
#include <string.h>
#include "c.h"
#include "uuidP.h"
int uuid_parse(const char *in, uuid_t uu)
@ -70,16 +71,28 @@ int uuid_parse_range(const char *in_start, const char *in_end, uuid_t uu)
if (!isxdigit(*cp))
return -1;
}
errno = 0;
uuid.time_low = strtoul(in_start, NULL, 16);
uuid.time_mid = strtoul(in_start+9, NULL, 16);
uuid.time_hi_and_version = strtoul(in_start+14, NULL, 16);
uuid.clock_seq = strtoul(in_start+19, NULL, 16);
if (!errno)
uuid.time_mid = strtoul(in_start+9, NULL, 16);
if (!errno)
uuid.time_hi_and_version = strtoul(in_start+14, NULL, 16);
if (!errno)
uuid.clock_seq = strtoul(in_start+19, NULL, 16);
if (errno)
return -1;
cp = in_start+24;
buf[2] = 0;
for (i=0; i < 6; i++) {
buf[0] = *cp++;
buf[1] = *cp++;
errno = 0;
uuid.node[i] = strtoul(buf, NULL, 16);
if (errno)
return -1;
}
uuid_pack(&uuid, uu);