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Fix inet_aton on LP32.

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I wasn't checking for overflow. Luckily, I had a test that overflows on LP32.

Change-Id: If2cf33d88f459eb26d0ce75f3c5ed192f516ab7a
This commit is contained in:
Elliott Hughes 2015-10-09 17:27:41 -07:00
parent 487a1823e8
commit 7b77cb35af
2 changed files with 7 additions and 2 deletions
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3
libc/bionic/arpa_inet.cpp
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@ -39,8 +39,9 @@ int inet_aton(const char* cp, in_addr* addr) {
size_t i;
for (i = 0; i < 4; ++i) {
char* end;
errno = 0;
parts[i] = strtoul(cp, &end, 0);
if (end == cp || (*end != '.' && *end != '\0')) return 0;
if (errno != 0 || end == cp || (*end != '.' && *end != '\0')) return 0;
if (*end == '\0') break;
cp = end + 1;
}

6
tests/arpa_inet_test.cpp
View file

@ -98,7 +98,11 @@ TEST(arpa_inet, inet_aton_invalid) {
// Out of range a form.
ASSERT_EQ(0, inet_aton("0x100000000", nullptr));
ASSERT_EQ(0, inet_aton("0400.0.0.1", nullptr)); // Out of range octal.
// 64-bit overflow.
ASSERT_EQ(0, inet_aton("0x10000000000000000", nullptr));
// Out of range octal.
ASSERT_EQ(0, inet_aton("0400.0.0.1", nullptr));
}
TEST(arpa_inet, inet_lnaof) {