/* * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file is distributed * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the License for the specific language governing * permissions and limitations under the License. */ #include #include #include #include #include "api/s2n.h" #include "s2n_test.h" #include "tls/s2n_connection.h" #include "tls/s2n_handshake.h" /* * The TLS protocol allows messages to be fragmented, interleaved and coalesced into 'records'. These * tests check that fragmented messages are recombined, that several messages in the same record work * and that messages interleaved with alerts (including a fragmented alert message) all work. * * To do this we fork() subprocesses that write records to a pipe, s2n is configured to read fragments * from the pipe. */ #define TLS_ALERT 21 #define TLS_HANDSHAKE 22 #define TLS_HEARTBEAT 24 #define ZERO_TO_THIRTY_ONE 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, \ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F uint8_t zero_to_thirty_one[] = { ZERO_TO_THIRTY_ONE }; uint8_t server_hello_message[] = { /* SERVER HELLO */ 0x02, /* Length */ 0x00, 0x00, 0x46, /* Protocol version */ 0x03, 0x03, /* Server random */ ZERO_TO_THIRTY_ONE, /* SessionID len - 32 bytes */ 0x20, /* Session ID */ ZERO_TO_THIRTY_ONE, /* Cipher suite - TLS_RSA_WITH_AES_256_CBC_SHA256 */ 0x00, 0x3D, /* Compression method: none */ 0x00 }; uint8_t server_cert[] = { /* SERVER CERT */ 0x0B, /* Length of the handshake message */ 0x00, 0x03, 0x38, /* Length of all certificates */ 0x00, 0x03, 0x35, /* Length of the first cert */ 0x00, 0x03, 0x32, /* Certificate data - via openssl x509 -in cert.pem -outform DER | xxd -i */ 0x30, 0x82, 0x03, 0x2e, 0x30, 0x82, 0x02, 0x16, 0x02, 0x09, 0x00, 0xcb, 0xd6, 0x5a, 0xfa, 0x37, 0xcf, 0xe0, 0xbf, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x30, 0x59, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x41, 0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x08, 0x13, 0x0a, 0x53, 0x6f, 0x6d, 0x65, 0x2d, 0x53, 0x74, 0x61, 0x74, 0x65, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x18, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x20, 0x57, 0x69, 0x64, 0x67, 0x69, 0x74, 0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c, 0x74, 0x64, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x34, 0x30, 0x35, 0x31, 0x30, 0x31, 0x37, 0x30, 0x38, 0x32, 0x33, 0x5a, 0x17, 0x0d, 0x32, 0x34, 0x30, 0x35, 0x30, 0x37, 0x31, 0x37, 0x30, 0x38, 0x32, 0x33, 0x5a, 0x30, 0x59, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x41, 0x55, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x08, 0x13, 0x0a, 0x53, 0x6f, 0x6d, 0x65, 0x2d, 0x53, 0x74, 0x61, 0x74, 0x65, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x18, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x20, 0x57, 0x69, 0x64, 0x67, 0x69, 0x74, 0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c, 0x74, 0x64, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x09, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xc8, 0x96, 0xd6, 0x94, 0x98, 0x78, 0x3e, 0x1b, 0xb2, 0x1d, 0x6b, 0x65, 0xc2, 0xb4, 0x44, 0x31, 0xd5, 0x87, 0x96, 0x0d, 0x7e, 0x35, 0x53, 0x6c, 0xc1, 0x29, 0xb6, 0x34, 0x95, 0x3f, 0x9a, 0xb9, 0x77, 0xfc, 0xd5, 0xc4, 0xf7, 0x75, 0x84, 0xdd, 0x7c, 0x96, 0xe5, 0x6f, 0xeb, 0xf8, 0x09, 0x35, 0x9a, 0x18, 0xda, 0x1f, 0xa2, 0x07, 0x33, 0x79, 0xb9, 0xbc, 0x07, 0x6f, 0xce, 0x17, 0xd1, 0x7e, 0x59, 0x69, 0x0a, 0x00, 0x98, 0x4a, 0xb1, 0x33, 0xc0, 0x13, 0xbf, 0xd2, 0x34, 0x07, 0x62, 0xe0, 0x4a, 0xaf, 0xe0, 0x57, 0xcd, 0x6d, 0x62, 0xa4, 0x19, 0xbe, 0x31, 0x69, 0xcc, 0x71, 0x6f, 0x83, 0xc7, 0xd9, 0x73, 0xfd, 0x57, 0x70, 0xa1, 0x27, 0xa9, 0x4c, 0x48, 0x8d, 0xd5, 0xeb, 0xc1, 0x66, 0x11, 0xfe, 0x24, 0x70, 0x43, 0x75, 0xe1, 0x5f, 0x2f, 0xb9, 0xf2, 0x02, 0xe4, 0x71, 0x3f, 0x2d, 0x3e, 0x20, 0x08, 0xf0, 0xc9, 0xe1, 0x47, 0xd4, 0x51, 0xb0, 0x20, 0x12, 0x14, 0x9e, 0x6d, 0x3e, 0xab, 0xfc, 0xa1, 0x58, 0x07, 0x94, 0xf7, 0x01, 0xe0, 0xdc, 0xd5, 0x57, 0x67, 0x69, 0xa4, 0x5b, 0x96, 0xb3, 0xfa, 0x2b, 0x03, 0x38, 0xe6, 0xf4, 0xec, 0xd0, 0x88, 0xb4, 0xf7, 0xf6, 0x2b, 0x97, 0x30, 0x71, 0x69, 0x33, 0xcc, 0x8c, 0xb1, 0x82, 0x29, 0xaf, 0x09, 0x32, 0xff, 0x0f, 0x5b, 0x64, 0x74, 0x53, 0xd5, 0x82, 0xa8, 0x79, 0xb3, 0x04, 0x7f, 0x96, 0xdd, 0x0f, 0x71, 0x3e, 0xb7, 0xe1, 0x08, 0x89, 0xe6, 0xe0, 0x95, 0xa8, 0x6f, 0xc5, 0xa0, 0x33, 0x53, 0x6e, 0x89, 0x8b, 0xb3, 0x14, 0x1d, 0x02, 0x35, 0xa4, 0x1c, 0x74, 0xc4, 0xbb, 0x87, 0x46, 0x99, 0x10, 0x05, 0x67, 0x6b, 0x28, 0x50, 0xf7, 0xaf, 0xcf, 0x69, 0xda, 0x63, 0x28, 0xd1, 0x34, 0x2e, 0xea, 0xfd, 0x9d, 0x4c, 0x5b, 0x02, 0x03, 0x01, 0x00, 0x01, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x03, 0x82, 0x01, 0x01, 0x00, 0x64, 0x55, 0xef, 0x5b, 0x91, 0xb7, 0xfd, 0x5d, 0x00, 0x3b, 0x0c, 0x0f, 0xd7, 0xe0, 0x26, 0xfc, 0xd6, 0xf3, 0xd8, 0xc5, 0x00, 0xdf, 0x3b, 0x85, 0x70, 0x91, 0x85, 0x35, 0xb1, 0x7d, 0x78, 0x58, 0x33, 0x39, 0x27, 0xc4, 0x9e, 0x56, 0x31, 0xbd, 0x89, 0x02, 0x56, 0x8c, 0x73, 0xf8, 0x13, 0xa6, 0x20, 0xe2, 0x40, 0x19, 0x1b, 0xbc, 0x1f, 0xa2, 0x25, 0xee, 0x40, 0x7a, 0x98, 0x10, 0x59, 0xbc, 0xb1, 0x3c, 0x93, 0x6d, 0x4a, 0x50, 0x3d, 0x19, 0xf2, 0x81, 0xcf, 0x52, 0x0d, 0x47, 0x97, 0x05, 0xb0, 0xe2, 0xf6, 0xed, 0x5a, 0xc1, 0xa0, 0xc6, 0x07, 0x31, 0xaa, 0x25, 0xbd, 0xe7, 0xac, 0x95, 0xcd, 0x40, 0x5b, 0x61, 0xdf, 0x06, 0xd5, 0xd6, 0x5d, 0xe5, 0x92, 0x10, 0x5e, 0xc5, 0x40, 0xd8, 0x32, 0x7b, 0xc6, 0x43, 0x3c, 0xdc, 0xde, 0x49, 0x64, 0x88, 0xd1, 0x5c, 0x8a, 0xdb, 0xbe, 0xb6, 0xc2, 0xc4, 0xe0, 0x4e, 0xe5, 0x21, 0x1c, 0x06, 0x89, 0xe3, 0x9e, 0xba, 0xd1, 0xe5, 0xf9, 0xef, 0xe7, 0xbc, 0x22, 0xf6, 0x8c, 0xef, 0x13, 0x84, 0x7c, 0x13, 0xc3, 0x29, 0x8b, 0x54, 0xd1, 0xad, 0xbc, 0x66, 0xe8, 0x6f, 0x4a, 0xbd, 0x9a, 0x90, 0x9b, 0x46, 0x0b, 0x07, 0x2c, 0xd8, 0x9e, 0xab, 0xb3, 0xa2, 0x3e, 0xad, 0x5f, 0x38, 0x52, 0x4b, 0x43, 0xc4, 0x50, 0xbd, 0x2d, 0x47, 0xb3, 0x06, 0x8f, 0x03, 0xf4, 0x59, 0x0c, 0x3c, 0xba, 0x0f, 0x28, 0xa3, 0x47, 0xd5, 0xd5, 0xd1, 0xe8, 0xb3, 0xbc, 0x18, 0xe9, 0x2a, 0x59, 0x4a, 0xe1, 0x3c, 0x81, 0x26, 0x7f, 0x2f, 0x4a, 0x61, 0xeb, 0x37, 0xab, 0x66, 0x57, 0xea, 0xcb, 0xe4, 0xe2, 0xbc, 0x01, 0xb6, 0x89, 0xa6, 0x1d, 0x1b, 0xf7, 0xd2, 0x43, 0xf1, 0x9e, 0x75, 0x35, 0x61, 0x7b, 0x79, 0xd9, 0x18, 0xbe, 0x5d, 0xcc, 0xce, 0xc0, 0x4b }; uint8_t heartbeat_message[] = { 0x01, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10 }; uint8_t warning_alert[] = { /* warning: user cancelled */ 0x01, 0x5a }; uint8_t fatal_alert[] = { /* Fatal: unexpected message */ 0x02, 0x0a }; message_type_t s2n_conn_get_current_message_type(struct s2n_connection *conn); void fragmented_message(int write_fd) { int written = 0; /* Split the hello message into 5 fragments and write it */ for (int i = 0; i < 5; i++) { int length = sizeof(server_hello_message) / 5; if (i == 0) { length += sizeof(server_hello_message) % 5; } uint8_t record_header[5] = { TLS_HANDSHAKE, 0x03, 0x03, (length >> 8), length & 0xff }; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } written += length; } /* Close the pipe and exit */ close(write_fd); } void coalesced_message(int write_fd) { int length = sizeof(server_hello_message) + sizeof(server_cert); uint8_t record_header[5] = { TLS_HANDSHAKE, 0x03, 0x03, (length >> 8), length & 0xff }; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message, sizeof(server_hello_message)) != sizeof(server_hello_message)) { _exit(100); } if (write(write_fd, server_cert, sizeof(server_cert)) != sizeof(server_cert)) { _exit(100); } close(write_fd); } void interleaved_message(int write_fd) { int length = sizeof(server_hello_message) / 2; uint8_t record_header[5] = { TLS_HANDSHAKE, 0x03, 0x03, (length >> 8), length & 0xff }; int written = 0; /* Write half of the message */ if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message, length) != length) { _exit(100); } written += length; /* Write the heartbeat record */ record_header[0] = TLS_HEARTBEAT; record_header[3] = sizeof(heartbeat_message) >> 8; record_header[4] = sizeof(heartbeat_message) & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, heartbeat_message, sizeof(heartbeat_message)) != sizeof(heartbeat_message)) { _exit(100); } /* Write the rest of the hello message */ length = sizeof(server_hello_message) - written; record_header[0] = TLS_HANDSHAKE; record_header[3] = length >> 8; record_header[4] = length & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } /* Close the pipe and exit */ close(write_fd); } void interleaved_fragmented_fatal_alert(int write_fd) { int length = sizeof(server_hello_message) / 2; uint8_t record_header[5] = { TLS_HANDSHAKE, 0x03, 0x03, (length >> 8), length & 0xff }; int written = 0; /* Write half of the message */ if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message, length) != length) { _exit(100); } written += length; /* Write half of the alert message */ record_header[0] = TLS_ALERT; record_header[3] = 0; record_header[4] = 1; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, fatal_alert, 1) != 1) { _exit(100); } /* Write another quarter of the of the hello message */ length = sizeof(server_hello_message) / 4; record_header[0] = TLS_HANDSHAKE; record_header[3] = length >> 8; record_header[4] = length & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } written += length; /* Write second half of the alert message */ record_header[0] = TLS_ALERT; record_header[3] = 0; record_header[4] = 1; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, fatal_alert + 1, 1) != 1) { _exit(100); } /* Write the rest of the hello message */ length = sizeof(server_hello_message) - written; record_header[0] = TLS_HANDSHAKE; record_header[3] = length >> 8; record_header[4] = length & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } /* Close the pipe and exit */ close(write_fd); } void interleaved_fragmented_warning_alert(int write_fd) { int length = sizeof(server_hello_message) / 2; uint8_t record_header[5] = { TLS_HANDSHAKE, 0x03, 0x03, (length >> 8), length & 0xff }; int written = 0; /* Write half of the message */ if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message, length) != length) { _exit(100); } written += length; /* Write half of the alert message */ record_header[0] = TLS_ALERT; record_header[3] = 0; record_header[4] = 1; if (write(write_fd, warning_alert, 1) != 1) { _exit(100); } /* Write another quarter of the of the hello message */ length = sizeof(server_hello_message) / 4; record_header[0] = TLS_HANDSHAKE; record_header[3] = length >> 8; record_header[4] = length & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } written += length; /* Write second half of the alert message */ record_header[0] = TLS_ALERT; record_header[3] = 0; record_header[4] = 1; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, warning_alert + 1, 1) != 1) { _exit(100); } /* Write the rest of the hello message */ length = sizeof(server_hello_message) - written; record_header[0] = TLS_HANDSHAKE; record_header[3] = length >> 8; record_header[4] = length & 0xff; if (write(write_fd, record_header, 5) != 5) { _exit(100); } if (write(write_fd, server_hello_message + written, length) != length) { _exit(100); } /* Close the pipe and exit */ close(write_fd); } int main(int argc, char **argv) { struct s2n_connection *conn; struct s2n_config *config; s2n_blocked_status blocked; int status; pid_t pid; int p[2]; BEGIN_TEST(); EXPECT_SUCCESS(s2n_disable_tls13_in_test()); EXPECT_NOT_NULL(config = s2n_config_new()); EXPECT_SUCCESS(s2n_config_disable_x509_verification(config)); EXPECT_SUCCESS(s2n_config_set_check_stapled_ocsp_response(config, 0)); /* The server hello has TLS_RSA_WITH_AES_256_CBC_SHA256 hardcoded, so we need to set a cipher preference that will accept that value */ EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "20170328")); EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_CLIENT)); EXPECT_SUCCESS(s2n_connection_set_config(conn, config)); conn->server_protocol_version = S2N_TLS12; conn->client_protocol_version = S2N_TLS12; conn->actual_protocol_version = S2N_TLS12; /* Create a pipe */ EXPECT_SUCCESS(pipe(p)); /* Set up the connection to read from the fd */ EXPECT_SUCCESS(s2n_connection_set_read_fd(conn, p[0])); /* Pretend the client hello has already been set */ conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE; conn->handshake.message_number = SERVER_HELLO; /* Create a child process */ pid = fork(); if (pid == 0) { /* This is the child process, close the read end of the pipe */ EXPECT_SUCCESS(close(p[0])); /* Write the fragmented hello message */ fragmented_message(p[1]); EXPECT_SUCCESS(s2n_config_free(config)); EXPECT_SUCCESS(s2n_connection_free(conn)); exit(0); } /* This is the parent process, close the write end of the pipe */ EXPECT_SUCCESS(close(p[1])); /* Negotiate the handshake. This will fail due to EOF, but that's ok. */ EXPECT_FAILURE(s2n_negotiate(conn, &blocked)); /* Verify that the data is as we expect it */ EXPECT_EQUAL(memcmp(conn->handshake_params.server_random, zero_to_thirty_one, 32), 0); /* Check that the server hello message was processed */ EXPECT_EQUAL(s2n_conn_get_current_message_type(conn), SERVER_CERT); /* Clean up */ EXPECT_EQUAL(waitpid(pid, &status, 0), pid); EXPECT_EQUAL(status, 0); EXPECT_SUCCESS(close(p[0])); /* Create a pipe */ EXPECT_SUCCESS(pipe(p)); /* Wipe the connection */ EXPECT_SUCCESS(s2n_connection_wipe(conn)); conn->server_protocol_version = S2N_TLS12; conn->client_protocol_version = S2N_TLS12; conn->actual_protocol_version = S2N_TLS12; /* Set up the connection to read from the fd */ EXPECT_SUCCESS(s2n_connection_set_read_fd(conn, p[0])); /* Pretend the client hello has already been set */ conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE; conn->handshake.message_number = SERVER_HELLO; /* Create a child process */ pid = fork(); if (pid == 0) { /* This is the child process, close the read end of the pipe */ EXPECT_SUCCESS(close(p[0])); /* Write the fragmented hello message */ coalesced_message(p[1]); EXPECT_SUCCESS(s2n_connection_free(conn)); EXPECT_SUCCESS(s2n_config_free(config)); exit(0); } /* This is the parent process, close the write end of the pipe */ EXPECT_SUCCESS(close(p[1])); /* Negotiate the handshake. This will fail due to EOF, but that's ok. */ EXPECT_FAILURE(s2n_negotiate(conn, &blocked)); /* Verify that the data is as we expect it */ EXPECT_EQUAL(memcmp(conn->handshake_params.server_random, zero_to_thirty_one, 32), 0); /* Check that the server done message was processed */ EXPECT_EQUAL(s2n_conn_get_current_message_type(conn), SERVER_HELLO_DONE); /* Clean up */ EXPECT_EQUAL(waitpid(pid, &status, 0), pid); EXPECT_EQUAL(status, 0); EXPECT_SUCCESS(close(p[0])); /* Create a pipe */ EXPECT_SUCCESS(pipe(p)); /* Wipe the connection */ EXPECT_SUCCESS(s2n_connection_wipe(conn)); conn->server_protocol_version = S2N_TLS12; conn->client_protocol_version = S2N_TLS12; conn->actual_protocol_version = S2N_TLS12; /* Set up the connection to read from the fd */ EXPECT_SUCCESS(s2n_connection_set_read_fd(conn, p[0])); /* Pretend the client hello has already been set */ conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE; conn->handshake.message_number = SERVER_HELLO; /* Create a child process */ pid = fork(); if (pid == 0) { /* This is the child process, close the read end of the pipe */ EXPECT_SUCCESS(close(p[0])); /* Write the fragmented hello message */ interleaved_message(p[1]); EXPECT_SUCCESS(s2n_connection_free(conn)); EXPECT_SUCCESS(s2n_config_free(config)); exit(0); } /* This is the parent process, close the write end of the pipe */ EXPECT_SUCCESS(close(p[1])); /* Negotiate the handshake. This will fail due to EOF, but that's ok. */ EXPECT_FAILURE(s2n_negotiate(conn, &blocked)); /* Verify that the data is as we expect it */ EXPECT_EQUAL(memcmp(conn->handshake_params.server_random, zero_to_thirty_one, 32), 0); /* Check that the server hello message was processed */ EXPECT_EQUAL(s2n_conn_get_current_message_type(conn), SERVER_CERT); /* Clean up */ EXPECT_EQUAL(waitpid(pid, &status, 0), pid); EXPECT_EQUAL(status, 0); EXPECT_SUCCESS(close(p[0])); /* Create a pipe */ EXPECT_SUCCESS(pipe(p)); /* Wipe the connection */ EXPECT_SUCCESS(s2n_connection_wipe(conn)); conn->server_protocol_version = S2N_TLS12; conn->client_protocol_version = S2N_TLS12; conn->actual_protocol_version = S2N_TLS12; /* Set up the connection to read from the fd */ EXPECT_SUCCESS(s2n_connection_set_read_fd(conn, p[0])); /* Pretend the client hello has already been set */ conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE; conn->handshake.message_number = SERVER_HELLO; /* Create a child process */ pid = fork(); if (pid == 0) { /* This is the child process, close the read end of the pipe */ EXPECT_SUCCESS(close(p[0])); /* Write the fragmented hello message */ interleaved_fragmented_warning_alert(p[1]); EXPECT_SUCCESS(s2n_connection_free(conn)); EXPECT_SUCCESS(s2n_config_free(config)); exit(0); } /* This is the parent process, close the write end of the pipe */ EXPECT_SUCCESS(close(p[1])); /* Negotiate the handshake. This will fail due to EOF, but that's ok. */ EXPECT_FAILURE(s2n_negotiate(conn, &blocked)); /* Verify that the data is as we expect it */ EXPECT_NOT_EQUAL(memcmp(conn->handshake_params.server_random, zero_to_thirty_one, 32), 0); /* Check that the server hello message was not processed */ EXPECT_EQUAL(s2n_conn_get_current_message_type(conn), SERVER_HELLO); /* Clean up */ EXPECT_EQUAL(waitpid(pid, &status, 0), pid); EXPECT_EQUAL(status, 0); EXPECT_SUCCESS(close(p[0])); /* Create a pipe */ EXPECT_SUCCESS(pipe(p)); /* Wipe the connection */ EXPECT_SUCCESS(s2n_connection_wipe(conn)); conn->server_protocol_version = S2N_TLS12; conn->client_protocol_version = S2N_TLS12; conn->actual_protocol_version = S2N_TLS12; /* Set up the connection to read from the fd */ EXPECT_SUCCESS(s2n_connection_set_read_fd(conn, p[0])); /* Pretend the client hello has already been set */ conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE; conn->handshake.message_number = SERVER_HELLO; /* Create a child process */ pid = fork(); if (pid == 0) { /* This is the child process, close the read end of the pipe */ EXPECT_SUCCESS(close(p[0])); /* Write the fragmented hello message */ interleaved_fragmented_fatal_alert(p[1]); EXPECT_SUCCESS(s2n_connection_free(conn)); EXPECT_SUCCESS(s2n_config_free(config)); exit(0); } /* This is the parent process, close the write end of the pipe */ EXPECT_SUCCESS(close(p[1])); /* Negotiate the handshake. This will fail due to EOF, but that's ok. */ EXPECT_FAILURE(s2n_negotiate(conn, &blocked)); /* Verify that the data failed */ EXPECT_NOT_EQUAL(memcmp(conn->handshake_params.server_random, zero_to_thirty_one, 32), 0); /* Check that the server hello message was not processed */ EXPECT_NOT_EQUAL(s2n_conn_get_current_message_type(conn), SERVER_CERT); /* Clean up */ EXPECT_EQUAL(waitpid(pid, &status, 0), pid); EXPECT_EQUAL(status, 0); EXPECT_SUCCESS(close(p[0])); EXPECT_SUCCESS(s2n_connection_free(conn)); EXPECT_SUCCESS(s2n_config_free(config)); END_TEST(); }