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- /* Copyright (c) 2014, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
-
- #include <algorithm>
- #include <string>
-
- #include <gtest/gtest.h>
-
- #include <openssl/bio.h>
- #include <openssl/crypto.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
-
- #include "../internal.h"
- #include "../test/test_util.h"
-
- #if !defined(OPENSSL_WINDOWS)
- #include <arpa/inet.h>
- #include <errno.h>
- #include <fcntl.h>
- #include <netinet/in.h>
- #include <string.h>
- #include <sys/socket.h>
- #include <unistd.h>
- #else
- #include <io.h>
- OPENSSL_MSVC_PRAGMA(warning(push, 3))
- #include <winsock2.h>
- #include <ws2tcpip.h>
- OPENSSL_MSVC_PRAGMA(warning(pop))
- #endif
-
-
- #if !defined(OPENSSL_WINDOWS)
- static int closesocket(int sock) { return close(sock); }
- static std::string LastSocketError() { return strerror(errno); }
- #else
- static std::string LastSocketError() {
- char buf[DECIMAL_SIZE(int) + 1];
- BIO_snprintf(buf, sizeof(buf), "%d", WSAGetLastError());
- return buf;
- }
- #endif
-
- class ScopedSocket {
- public:
- explicit ScopedSocket(int sock) : sock_(sock) {}
- ~ScopedSocket() {
- closesocket(sock_);
- }
-
- private:
- const int sock_;
- };
-
- TEST(BIOTest, SocketConnect) {
- static const char kTestMessage[] = "test";
- int listening_sock = -1;
- socklen_t len = 0;
- sockaddr_storage ss;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) &ss;
- struct sockaddr_in *sin = (struct sockaddr_in *) &ss;
- OPENSSL_memset(&ss, 0, sizeof(ss));
-
- ss.ss_family = AF_INET6;
- listening_sock = socket(AF_INET6, SOCK_STREAM, 0);
- ASSERT_NE(-1, listening_sock) << LastSocketError();
- len = sizeof(*sin6);
- ASSERT_EQ(1, inet_pton(AF_INET6, "::1", &sin6->sin6_addr))
- << LastSocketError();
- if (bind(listening_sock, (struct sockaddr *)sin6, sizeof(*sin6)) == -1) {
- closesocket(listening_sock);
-
- ss.ss_family = AF_INET;
- listening_sock = socket(AF_INET, SOCK_STREAM, 0);
- ASSERT_NE(-1, listening_sock) << LastSocketError();
- len = sizeof(*sin);
- ASSERT_EQ(1, inet_pton(AF_INET, "127.0.0.1", &sin->sin_addr))
- << LastSocketError();
- ASSERT_EQ(0, bind(listening_sock, (struct sockaddr *)sin, sizeof(*sin)))
- << LastSocketError();
- }
-
- ScopedSocket listening_sock_closer(listening_sock);
- ASSERT_EQ(0, listen(listening_sock, 1)) << LastSocketError();
- ASSERT_EQ(0, getsockname(listening_sock, (struct sockaddr *)&ss, &len))
- << LastSocketError();
-
- char hostname[80];
- if (ss.ss_family == AF_INET6) {
- BIO_snprintf(hostname, sizeof(hostname), "[::1]:%d",
- ntohs(sin6->sin6_port));
- } else if (ss.ss_family == AF_INET) {
- BIO_snprintf(hostname, sizeof(hostname), "127.0.0.1:%d",
- ntohs(sin->sin_port));
- }
-
- // Connect to it with a connect BIO.
- bssl::UniquePtr<BIO> bio(BIO_new_connect(hostname));
- ASSERT_TRUE(bio);
-
- // Write a test message to the BIO.
- ASSERT_EQ(static_cast<int>(sizeof(kTestMessage)),
- BIO_write(bio.get(), kTestMessage, sizeof(kTestMessage)));
-
- // Accept the socket.
- int sock = accept(listening_sock, (struct sockaddr *) &ss, &len);
- ASSERT_NE(-1, sock) << LastSocketError();
- ScopedSocket sock_closer(sock);
-
- // Check the same message is read back out.
- char buf[sizeof(kTestMessage)];
- ASSERT_EQ(static_cast<int>(sizeof(kTestMessage)),
- recv(sock, buf, sizeof(buf), 0))
- << LastSocketError();
- EXPECT_EQ(Bytes(kTestMessage, sizeof(kTestMessage)), Bytes(buf, sizeof(buf)));
- }
-
- TEST(BIOTest, Printf) {
- // Test a short output, a very long one, and various sizes around
- // 256 (the size of the buffer) to ensure edge cases are correct.
- static const size_t kLengths[] = {5, 250, 251, 252, 253, 254, 1023};
-
- bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
- ASSERT_TRUE(bio);
-
- for (size_t length : kLengths) {
- SCOPED_TRACE(length);
-
- std::string in(length, 'a');
-
- int ret = BIO_printf(bio.get(), "test %s", in.c_str());
- ASSERT_GE(ret, 0);
- EXPECT_EQ(5 + length, static_cast<size_t>(ret));
-
- const uint8_t *contents;
- size_t len;
- ASSERT_TRUE(BIO_mem_contents(bio.get(), &contents, &len));
- EXPECT_EQ("test " + in,
- std::string(reinterpret_cast<const char *>(contents), len));
-
- ASSERT_TRUE(BIO_reset(bio.get()));
- }
- }
-
- static const size_t kLargeASN1PayloadLen = 8000;
-
- struct ASN1TestParam {
- bool should_succeed;
- std::vector<uint8_t> input;
- // suffix_len is the number of zeros to append to |input|.
- size_t suffix_len;
- // expected_len, if |should_succeed| is true, is the expected length of the
- // ASN.1 element.
- size_t expected_len;
- size_t max_len;
- } kASN1TestParams[] = {
- {true, {0x30, 2, 1, 2, 0, 0}, 0, 4, 100},
- {false /* truncated */, {0x30, 3, 1, 2}, 0, 0, 100},
- {false /* should be short len */, {0x30, 0x81, 1, 1}, 0, 0, 100},
- {false /* zero padded */, {0x30, 0x82, 0, 1, 1}, 0, 0, 100},
-
- // Test a large payload.
- {true,
- {0x30, 0x82, kLargeASN1PayloadLen >> 8, kLargeASN1PayloadLen & 0xff},
- kLargeASN1PayloadLen,
- 4 + kLargeASN1PayloadLen,
- kLargeASN1PayloadLen * 2},
- {false /* max_len too short */,
- {0x30, 0x82, kLargeASN1PayloadLen >> 8, kLargeASN1PayloadLen & 0xff},
- kLargeASN1PayloadLen,
- 4 + kLargeASN1PayloadLen,
- 3 + kLargeASN1PayloadLen},
-
- // Test an indefinite-length input.
- {true,
- {0x30, 0x80},
- kLargeASN1PayloadLen + 2,
- 2 + kLargeASN1PayloadLen + 2,
- kLargeASN1PayloadLen * 2},
- {false /* max_len too short */,
- {0x30, 0x80},
- kLargeASN1PayloadLen + 2,
- 2 + kLargeASN1PayloadLen + 2,
- 2 + kLargeASN1PayloadLen + 1},
- };
-
- class BIOASN1Test : public testing::TestWithParam<ASN1TestParam> {};
-
- TEST_P(BIOASN1Test, ReadASN1) {
- const ASN1TestParam& param = GetParam();
- std::vector<uint8_t> input = param.input;
- input.resize(input.size() + param.suffix_len, 0);
-
- bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(input.data(), input.size()));
- ASSERT_TRUE(bio);
-
- uint8_t *out;
- size_t out_len;
- int ok = BIO_read_asn1(bio.get(), &out, &out_len, param.max_len);
- if (!ok) {
- out = nullptr;
- }
- bssl::UniquePtr<uint8_t> out_storage(out);
-
- ASSERT_EQ(param.should_succeed, (ok == 1));
- if (param.should_succeed) {
- EXPECT_EQ(Bytes(input.data(), param.expected_len), Bytes(out, out_len));
- }
- }
-
- INSTANTIATE_TEST_CASE_P(, BIOASN1Test, testing::ValuesIn(kASN1TestParams));
-
- // Run through the tests twice, swapping |bio1| and |bio2|, for symmetry.
- class BIOPairTest : public testing::TestWithParam<bool> {};
-
- TEST_P(BIOPairTest, TestPair) {
- BIO *bio1, *bio2;
- ASSERT_TRUE(BIO_new_bio_pair(&bio1, 10, &bio2, 10));
- bssl::UniquePtr<BIO> free_bio1(bio1), free_bio2(bio2);
-
- if (GetParam()) {
- std::swap(bio1, bio2);
- }
-
- // Check initial states.
- EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));
- EXPECT_EQ(0u, BIO_ctrl_get_read_request(bio1));
-
- // Data written in one end may be read out the other.
- uint8_t buf[20];
- EXPECT_EQ(5, BIO_write(bio1, "12345", 5));
- EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));
- ASSERT_EQ(5, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("12345"), Bytes(buf, 5));
- EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));
-
- // Attempting to write more than 10 bytes will write partially.
- EXPECT_EQ(10, BIO_write(bio1, "1234567890___", 13));
- EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));
- EXPECT_EQ(-1, BIO_write(bio1, "z", 1));
- EXPECT_TRUE(BIO_should_write(bio1));
- ASSERT_EQ(10, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("1234567890"), Bytes(buf, 10));
- EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));
-
- // Unsuccessful reads update the read request.
- EXPECT_EQ(-1, BIO_read(bio2, buf, 5));
- EXPECT_TRUE(BIO_should_read(bio2));
- EXPECT_EQ(5u, BIO_ctrl_get_read_request(bio1));
-
- // The read request is clamped to the size of the buffer.
- EXPECT_EQ(-1, BIO_read(bio2, buf, 20));
- EXPECT_TRUE(BIO_should_read(bio2));
- EXPECT_EQ(10u, BIO_ctrl_get_read_request(bio1));
-
- // Data may be written and read in chunks.
- EXPECT_EQ(5, BIO_write(bio1, "12345", 5));
- EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));
- EXPECT_EQ(5, BIO_write(bio1, "67890___", 8));
- EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));
- ASSERT_EQ(3, BIO_read(bio2, buf, 3));
- EXPECT_EQ(Bytes("123"), Bytes(buf, 3));
- EXPECT_EQ(3u, BIO_ctrl_get_write_guarantee(bio1));
- ASSERT_EQ(7, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("4567890"), Bytes(buf, 7));
- EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));
-
- // Successful reads reset the read request.
- EXPECT_EQ(0u, BIO_ctrl_get_read_request(bio1));
-
- // Test writes and reads starting in the middle of the ring buffer and
- // wrapping to front.
- EXPECT_EQ(8, BIO_write(bio1, "abcdefgh", 8));
- EXPECT_EQ(2u, BIO_ctrl_get_write_guarantee(bio1));
- ASSERT_EQ(3, BIO_read(bio2, buf, 3));
- EXPECT_EQ(Bytes("abc"), Bytes(buf, 3));
- EXPECT_EQ(5u, BIO_ctrl_get_write_guarantee(bio1));
- EXPECT_EQ(5, BIO_write(bio1, "ijklm___", 8));
- EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));
- ASSERT_EQ(10, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("defghijklm"), Bytes(buf, 10));
- EXPECT_EQ(10u, BIO_ctrl_get_write_guarantee(bio1));
-
- // Data may flow from both ends in parallel.
- EXPECT_EQ(5, BIO_write(bio1, "12345", 5));
- EXPECT_EQ(5, BIO_write(bio2, "67890", 5));
- ASSERT_EQ(5, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("12345"), Bytes(buf, 5));
- ASSERT_EQ(5, BIO_read(bio1, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("67890"), Bytes(buf, 5));
-
- // Closing the write end causes an EOF on the read half, after draining.
- EXPECT_EQ(5, BIO_write(bio1, "12345", 5));
- EXPECT_TRUE(BIO_shutdown_wr(bio1));
- ASSERT_EQ(5, BIO_read(bio2, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("12345"), Bytes(buf, 5));
- EXPECT_EQ(0, BIO_read(bio2, buf, sizeof(buf)));
-
- // A closed write end may not be written to.
- EXPECT_EQ(0u, BIO_ctrl_get_write_guarantee(bio1));
- EXPECT_EQ(-1, BIO_write(bio1, "_____", 5));
-
- uint32_t err = ERR_get_error();
- EXPECT_EQ(ERR_LIB_BIO, ERR_GET_LIB(err));
- EXPECT_EQ(BIO_R_BROKEN_PIPE, ERR_GET_REASON(err));
-
- // The other end is still functional.
- EXPECT_EQ(5, BIO_write(bio2, "12345", 5));
- ASSERT_EQ(5, BIO_read(bio1, buf, sizeof(buf)));
- EXPECT_EQ(Bytes("12345"), Bytes(buf, 5));
- }
-
- INSTANTIATE_TEST_CASE_P(, BIOPairTest, testing::Values(false, true));
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