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[nat64] add function for parsing IPv4 CIDR (#8954)

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This commit is contained in:
Song GUO
2023-04-17 10:14:08 -07:00
committed by GitHub
parent 25fe46d8dd
commit 9783c14e24
7 changed files with 146 additions and 9 deletions
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tests/unit/test_ip_address.cpp
+72
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@@ -194,6 +194,77 @@ void TestIp4AddressFromString(void)
}
}
struct CidrTestVector
{
const char *mString;
const uint8_t mAddr[sizeof(otIp4Address)];
const uint8_t mLength;
ot::Error mError;
};
static void checkCidrFromString(CidrTestVector *aTestVector)
{
ot::Error error;
ot::Ip4::Cidr cidr;
cidr.Clear();
error = cidr.FromString(aTestVector->mString);
printf("%-42s -> %-42s\n", aTestVector->mString,
(error == ot::kErrorNone) ? cidr.ToString().AsCString() : "(parse error)");
VerifyOrQuit(error == aTestVector->mError, "Address::FromString returned unexpected error code");
if (error == ot::kErrorNone)
{
VerifyOrQuit(0 == memcmp(cidr.GetBytes(), aTestVector->mAddr, sizeof(aTestVector->mAddr)),
"Cidr::FromString parsing failed");
VerifyOrQuit(cidr.mLength == aTestVector->mLength, "Cidr::FromString parsing failed");
}
}
void TestIp4CidrFromString(void)
{
CidrTestVector testVectors[] = {
{"0.0.0.0/0", {0, 0, 0, 0}, 0, ot::kErrorNone},
{"255.255.255.255/32", {255, 255, 255, 255}, 32, ot::kErrorNone},
{"127.0.0.1/8", {127, 0, 0, 1}, 8, ot::kErrorNone},
{"1.2.3.4/24", {1, 2, 3, 4}, 24, ot::kErrorNone},
{"001.002.003.004/20", {1, 2, 3, 4}, 20, ot::kErrorNone},
{"00000127.000.000.000001/8", {127, 0, 0, 1}, 8, ot::kErrorNone},
// Valid suffix, invalid address
{"123.231.0.256/4", {0}, 0, ot::kErrorParse}, // Invalid byte value.
{"100123.231.0.256/4", {0}, 0, ot::kErrorParse}, // Invalid byte value.
{"1.22.33/4", {0}, 0, ot::kErrorParse}, // Too few bytes.
{"1.22.33.44.5/4", {0}, 0, ot::kErrorParse}, // Too many bytes.
{"a.b.c.d/4", {0}, 0, ot::kErrorParse}, // Wrong digit char.
{"123.23.45 .12/4", {0}, 0, ot::kErrorParse}, // Extra space.
{"./4", {0}, 0, ot::kErrorParse}, // Invalid.
// valid address, invalid suffix
{"1.2.3.4/33", {0}, 0, ot::kErrorParse}, // Prefix length too large
{"1.2.3.4/12345678", {0}, 0, ot::kErrorParse}, // Prefix length too large?
{"1.2.3.4/-1", {0}, 0, ot::kErrorParse}, // Not even a non-negative integer.
{"1.2.3.4/3.14", {0}, 0, ot::kErrorParse}, // Not even a integer.
{"1.2.3.4/abcd", {0}, 0, ot::kErrorParse}, // Not even a number.
{"1.2.3.4/", {0}, 0, ot::kErrorParse}, // Where is the suffix?
{"1.2.3.4", {0}, 0, ot::kErrorParse}, // Where is the suffix?
// invalid address and invalid suffix
{"123.231.0.256/41", {0}, 0, ot::kErrorParse}, // Invalid byte value.
{"100123.231.0.256/abc", {0}, 0, ot::kErrorParse}, // Invalid byte value.
{"1.22.33", {0}, 0, ot::kErrorParse}, // Too few bytes.
{"1.22.33.44.5/36", {0}, 0, ot::kErrorParse}, // Too many bytes.
{"a.b.c.d/99", {0}, 0, ot::kErrorParse}, // Wrong digit char.
{"123.23.45 .12", {0}, 0, ot::kErrorParse}, // Extra space.
{".", {0}, 0, ot::kErrorParse}, // Invalid.
};
for (CidrTestVector &testVector : testVectors)
{
checkCidrFromString(&testVector);
}
}
bool CheckPrefix(const ot::Ip6::Address &aAddress, const uint8_t *aPrefix, uint8_t aPrefixLength)
{
// Check the first aPrefixLength bits of aAddress to match the given aPrefix.
@@ -583,6 +654,7 @@ int main(void)
TestIp6Prefix();
TestIp4Ip6Translation();
TestIp4Cidr();
TestIp4CidrFromString();
printf("All tests passed\n");
return 0;
}