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-rw-r--r--fuzzer/fuzzer_connect.c447
1 files changed, 447 insertions, 0 deletions
diff --git a/fuzzer/fuzzer_connect.c b/fuzzer/fuzzer_connect.c
new file mode 100644
index 00000000..61d4ec3c
--- /dev/null
+++ b/fuzzer/fuzzer_connect.c
@@ -0,0 +1,447 @@
+/*
+ * Copyright (C) 2017-2019 Felix Weinrank
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <usrsctp.h>
+#include "../programs/programs_helper.h"
+
+//#define FUZZ_VERBOSE
+#define FUZZ_INTERLEAVING
+#define FUZZ_STREAM_RESET
+
+#define FUZZ_B_INJECT_INIT_ACK (1 << 0)
+#define FUZZ_B_INJECT_COOKIE_ACK (1 << 1)
+#define FUZZ_B_SEND_DATA (1 << 2)
+#define FUZZ_B_SEND_STREAM_RESET (1 << 3)
+#define FUZZ_B_INJECT_DATA (1 << 4)
+#define FUZZ_B_I_DATA_SUPPORT (1 << 5)
+#define FUZZ_B_RESERVED1 (1 << 6)
+#define FUZZ_B_RESERVED2 (1 << 7)
+
+#define BUFFER_SIZE 4096
+#define COMMON_HEADER_SIZE 12
+
+static uint32_t assoc_vtag = 0;
+
+#ifdef FUZZ_VERBOSE
+#define fuzzer_printf(...) \
+ do { \
+ fprintf(stderr, "[P]"); \
+ debug_printf_runtime(); \
+ fprintf(stderr, __VA_ARGS__); \
+ } while (0)
+#else
+#define fuzzer_printf(...)
+#endif
+
+static void
+dump_packet(const void *buffer, size_t bufferlen, int inout) {
+#ifdef FUZZ_VERBOSE
+ static char *dump_buf;
+ if ((dump_buf = usrsctp_dumppacket(buffer, bufferlen, inout)) != NULL) {
+ fprintf(stderr, "%s", dump_buf);
+ usrsctp_freedumpbuffer(dump_buf);
+ }
+#endif // FUZZ_VERBOSE
+}
+
+
+static int
+conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
+{
+ struct sctp_init_chunk *init_chunk;
+ const char *init_chunk_first_bytes = "\x13\x88\x13\x89\x00\x00\x00\x00\x00\x00\x00\x00\x01";
+ // Looking for the outgoing VTAG.
+ // length >= (COMMON_HEADER_SIZE + 16 (min size of INIT))
+ // If the common header has no VTAG (all zero), we're assuming it carries an INIT
+ if ((length >= (COMMON_HEADER_SIZE + 16)) && (memcmp(buf, init_chunk_first_bytes, COMMON_HEADER_SIZE) == 0)) {
+ init_chunk = (struct sctp_init_chunk*) ((char *)buf + sizeof(struct sctp_common_header));
+ fuzzer_printf("Found outgoing INIT, extracting VTAG : %u\n", init_chunk->initiate_tag);
+ assoc_vtag = init_chunk->initiate_tag;
+ }
+
+ dump_packet(buf, length, SCTP_DUMP_OUTBOUND);
+ return (0);
+}
+
+
+static void
+handle_upcall(struct socket *sock, void *arg, int flgs)
+{
+ fuzzer_printf("handle_upcall()\n");
+ int events = usrsctp_get_events(sock);
+
+ while (events & SCTP_EVENT_READ) {
+ struct sctp_recvv_rn rn;
+ ssize_t n;
+ struct sockaddr_in addr;
+ char *buf = calloc(1, BUFFER_SIZE);
+ int flags = 0;
+ socklen_t len = (socklen_t)sizeof(struct sockaddr_in);
+ unsigned int infotype = 0;
+ socklen_t infolen = sizeof(struct sctp_recvv_rn);
+ memset(&rn, 0, sizeof(struct sctp_recvv_rn));
+ n = usrsctp_recvv(sock, buf, BUFFER_SIZE, (struct sockaddr *) &addr, &len, (void *)&rn, &infolen, &infotype, &flags);
+ fuzzer_printf("usrsctp_recvv() - returned %zd\n", n);
+
+ if (flags & MSG_NOTIFICATION) {
+ fuzzer_printf("NOTIFICATION received\n");
+#ifdef FUZZ_VERBOSE
+ handle_notification((union sctp_notification *)buf, n);
+#endif // FUZZ_VERBOSE
+ } else {
+ fuzzer_printf("DATA received\n");
+ }
+
+ free(buf);
+
+ if (n <= 0) {
+ break;
+ }
+
+ events = usrsctp_get_events(sock);
+ }
+}
+
+
+int
+initialize_fuzzer(void) {
+#ifdef FUZZ_VERBOSE
+ usrsctp_init(0, conn_output, debug_printf_stack);
+#else // FUZZ_VERBOSE
+ usrsctp_init(0, conn_output, NULL);
+#endif // FUZZ_VERBOSE
+
+ usrsctp_enable_crc32c_offload();
+
+#ifdef SCTP_DEBUG
+ usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_ALL);
+#endif // SCTP_DEBUG
+
+ usrsctp_register_address((void *)1);
+
+ fuzzer_printf("usrsctp initialized\n");
+ return (1);
+}
+
+
+int
+LLVMFuzzerTestOneInput(const uint8_t* data, size_t data_size)
+{
+ static int initialized;
+ char *fuzz_packet_buffer;
+ struct sockaddr_in6 bind6;
+ struct sockaddr_conn sconn;
+ struct socket *socket_client;
+ struct linger so_linger;
+ struct sctp_event event;
+ unsigned long i;
+ struct sctp_common_header* common_header;
+ uint16_t event_types[] = {
+ SCTP_ASSOC_CHANGE,
+ SCTP_PEER_ADDR_CHANGE,
+ SCTP_REMOTE_ERROR,
+ SCTP_SEND_FAILED,
+ SCTP_SHUTDOWN_EVENT,
+ SCTP_ADAPTATION_INDICATION,
+ SCTP_PARTIAL_DELIVERY_EVENT,
+ SCTP_AUTHENTICATION_EVENT,
+ SCTP_STREAM_RESET_EVENT,
+ SCTP_SENDER_DRY_EVENT,
+ SCTP_ASSOC_RESET_EVENT,
+ SCTP_STREAM_CHANGE_EVENT,
+ SCTP_SEND_FAILED_EVENT
+ };
+ int optval;
+ int result;
+ struct sctp_initmsg initmsg;
+#if defined(FUZZ_STREAM_RESET) || defined(FUZZ_INTERLEAVING)
+ struct sctp_assoc_value assoc_val;
+#endif // defined(FUZZ_STREAM_RESET) || defined(FUZZ_INTERLEAVING)
+
+ // WITH COMMON HEADER!
+ char fuzz_init_ack[] = "\x13\x89\x13\x88\x49\xa4\xac\xb2\x00\x00\x00\x00\x02\x00\x01\xb4" \
+ "\x2b\xe8\x47\x40\x00\x1c\x71\xc7\xff\xff\xff\xff\xed\x69\x58\xec" \
+ "\xc0\x06\x00\x08\x00\x00\x07\xc4\x80\x00\x00\x04\xc0\x00\x00\x04" \
+ "\x80\x08\x00\x0b\xc0\xc2\x0f\xc1\x80\x82\x40\x00\x80\x02\x00\x24" \
+ "\x40\x39\xcf\x32\xd6\x60\xcf\xfa\x3f\x2f\xa9\x52\xed\x2b\xf2\xe6" \
+ "\x2f\xb7\x81\x96\xf8\xda\xe9\xa0\x62\x01\x79\xe1\x0d\x5f\x38\xaa" \
+ "\x80\x04\x00\x08\x00\x03\x00\x01\x80\x03\x00\x06\x80\xc1\x00\x00" \
+ "\x00\x07\x01\x50\x4b\x41\x4d\x45\x2d\x42\x53\x44\x20\x31\x2e\x31" \
+ "\x00\x00\x00\x00\x64\xdb\x63\x00\x00\x00\x00\x00\xc9\x76\x03\x00" \
+ "\x00\x00\x00\x00\x60\xea\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" \
+ "\xb2\xac\xa4\x49\x2b\xe8\x47\x40\xd4\xc9\x79\x52\x00\x00\x00\x00" \
+ "\x00\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\xd4\xc9\x79\x53" \
+ "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00" \
+ "\x00\x00\x00\x00\x5a\x76\x13\x89\x01\x00\x00\x00\x00\x00\x00\x00" \
+ "\x00\x00\x00\x00\x01\x00\x00\x62\x49\xa4\xac\xb2\x00\x1c\x71\xc7" \
+ "\x00\x01\xff\xff\x82\xe6\xc8\x44\x80\x00\x00\x04\xc0\x00\x00\x04" \
+ "\x80\x08\x00\x0b\xc0\xc2\x0f\xc1\x80\x82\x40\x00\x80\x02\x00\x24" \
+ "\xb6\xbb\xb5\x7f\xbb\x4b\x0e\xb5\x42\xf6\x75\x18\x4f\x79\x0f\x24" \
+ "\x1c\x44\x0b\xd6\x62\xa9\x84\xe7\x2c\x3c\x7f\xad\x1b\x67\x81\x57" \
+ "\x80\x04\x00\x08\x00\x03\x00\x01\x80\x03\x00\x06\x80\xc1\x00\x00" \
+ "\x00\x0c\x00\x06\x00\x05\x00\x00\x02\x00\x01\xb4\x2b\xe8\x47\x40" \
+ "\x00\x1c\x71\xc7\x00\x01\xff\xff\xed\x69\x58\xec\xc0\x06\x00\x08" \
+ "\x00\x00\x07\xc4\x80\x00\x00\x04\xc0\x00\x00\x04\x80\x08\x00\x0b" \
+ "\xc0\xc2\x0f\xc1\x80\x82\x40\x00\x80\x02\x00\x24\x40\x39\xcf\x32" \
+ "\xd6\x60\xcf\xfa\x3f\x2f\xa9\x52\xed\x2b\xf2\xe6\x2f\xb7\x81\x96" \
+ "\xf8\xda\xe9\xa0\x62\x01\x79\xe1\x0d\x5f\x38\xaa\x80\x04\x00\x08" \
+ "\x00\x03\x00\x01\x80\x03\x00\x06\x80\xc1\x00\x00\x81\xe1\x1e\x81" \
+ "\xea\x41\xeb\xf0\x12\xd9\x74\xbe\x13\xfd\x4b\x6c\x5c\xa2\x8f\x00";
+
+ // WITH COMMON HEADER!
+ char fuzz_cookie_ack[] = "\x13\x89\x13\x88\x54\xc2\x7c\x46\x00\x00\x00\x00\x0b\x00\x00\x04";
+
+ // WITH COMMON HEADER!
+ char fuzz_i_data[] = "\x13\x89\x13\x88\x07\x01\x6c\xd3\x00\x00\x00\x00\x40\x03" \
+ "\x00\xdc\x2d\x2b\x46\xd4\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" \
+ "\x00\x27\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41";
+
+ // WITH COMMON HEADER!
+ char fuzz_data[] = "\x13\x89\x13\x88\x27\xc4\xbf\xdf\x00\x00\x00\x00\x00\x03" \
+ "\x00\xd8\x79\x64\xb7\xc1\x00\x00\x00\x00\x00\x00\x00\x27\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" \
+ "\x41\x41\x41\x41\x41\x41";
+
+
+ char fuzz_common_header[] = "\x13\x89\x13\x88\x54\xc2\x7c\x46\x00\x00\x00\x00";
+
+ fuzzer_printf("LLVMFuzzerTestOneInput()\n");
+
+ if (!initialized) {
+ initialized = initialize_fuzzer();
+ }
+
+ if (data_size < 5 || data_size > 65535) {
+ // Skip too small and too large packets
+ fuzzer_printf("data_size %zu makes no sense, skipping\n", data_size);
+ return (0);
+ }
+
+ socket_client = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, 0);
+ assert(socket_client != NULL);
+
+ usrsctp_set_non_blocking(socket_client, 1);
+
+ // all max!
+ memset(&initmsg, 1, sizeof(struct sctp_initmsg));
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_INITMSG, &initmsg, sizeof(struct sctp_initmsg));
+ assert(result == 0);
+
+ so_linger.l_onoff = 1;
+ so_linger.l_linger = 0;
+ result = usrsctp_setsockopt(socket_client, SOL_SOCKET, SO_LINGER, &so_linger, sizeof(struct linger));
+ assert(result == 0);
+
+ memset(&event, 0, sizeof(event));
+ event.se_on = 1;
+ for (i = 0; i < (sizeof(event_types) / sizeof(uint16_t)); i++) {
+ event.se_type = event_types[i];
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(event));
+ assert(result == 0);
+ }
+
+ optval = 1;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_RECVRCVINFO, &optval, sizeof(optval));
+ assert(result == 0);
+
+ optval = 1;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_RECVNXTINFO, &optval, sizeof(optval));
+ assert(result == 0);
+
+#if defined(FUZZ_STREAM_RESET)
+ assoc_val.assoc_id = SCTP_ALL_ASSOC;
+ assoc_val.assoc_value = SCTP_ENABLE_RESET_STREAM_REQ | SCTP_ENABLE_RESET_ASSOC_REQ | SCTP_ENABLE_CHANGE_ASSOC_REQ;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_ENABLE_STREAM_RESET, &assoc_val, sizeof(struct sctp_assoc_value));
+ assert(result == 0);
+#endif // defined(FUZZ_STREAM_RESET)
+
+#if defined(FUZZ_INTERLEAVING)
+#if !defined(SCTP_INTERLEAVING_SUPPORTED)
+#define SCTP_INTERLEAVING_SUPPORTED 0x00001206
+#endif // !defined(SCTP_INTERLEAVING_SUPPORTED)
+
+ if (data[0] & FUZZ_B_I_DATA_SUPPORT) {
+ optval = 2;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_FRAGMENT_INTERLEAVE, &optval, sizeof(optval));
+ assert(result == 0);
+
+ memset(&assoc_val, 0, sizeof(assoc_val));
+ assoc_val.assoc_value = 1;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_INTERLEAVING_SUPPORTED, &assoc_val, sizeof(assoc_val));
+ assert(result == 0);
+ }
+#endif // defined(FUZZ_INTERLEAVING)
+
+ memset((void *)&bind6, 0, sizeof(struct sockaddr_in6));
+#ifdef HAVE_SIN_LEN
+ bind6.sin6_len = sizeof(struct sockaddr_in6);
+#endif // HAVE_SIN_LEN
+ bind6.sin6_family = AF_INET6;
+ bind6.sin6_port = htons(5000);
+ bind6.sin6_addr = in6addr_any;
+
+ result = usrsctp_bind(socket_client, (struct sockaddr *)&bind6, sizeof(bind6));
+ assert(result == 0);
+
+ // Disable Nagle.
+ optval = 1;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_NODELAY, &optval, sizeof(optval));
+ assert(result == 0);
+
+ usrsctp_set_upcall(socket_client, handle_upcall, NULL);
+
+ memset(&sconn, 0, sizeof(struct sockaddr_conn));
+ sconn.sconn_family = AF_CONN;
+#ifdef HAVE_SCONN_LEN
+ sconn.sconn_len = sizeof(struct sockaddr_conn);
+#endif // HAVE_SCONN_LEN
+ sconn.sconn_port = htons(5001);
+ sconn.sconn_addr = (void *)1;
+
+ fuzzer_printf("Calling usrsctp_connect()\n");
+ result = usrsctp_connect(socket_client, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn));
+ assert(result == 0 || errno == EINPROGRESS);
+
+ if (data[0] & FUZZ_B_INJECT_INIT_ACK) {
+ fuzzer_printf("Injecting INIT-ACK\n");
+
+ common_header = (struct sctp_common_header*) fuzz_init_ack;
+ common_header->verification_tag = assoc_vtag;
+
+ dump_packet(fuzz_init_ack, 448, SCTP_DUMP_INBOUND);
+ usrsctp_conninput((void *)1, fuzz_init_ack, 448, 0);
+ }
+
+ if (data[0] & FUZZ_B_INJECT_COOKIE_ACK) {
+ fuzzer_printf("Injecting COOKIE-ACK\n");
+
+ common_header = (struct sctp_common_header*) fuzz_cookie_ack;
+ common_header->verification_tag = assoc_vtag;
+
+ dump_packet(fuzz_cookie_ack, 16, SCTP_DUMP_INBOUND);
+ usrsctp_conninput((void *)1, fuzz_cookie_ack, 16, 0);
+ }
+
+ if (data[0] & FUZZ_B_INJECT_INIT_ACK &&
+ data[0] & FUZZ_B_INJECT_COOKIE_ACK &&
+ data[0] & FUZZ_B_SEND_DATA) {
+ const char *sendbuffer = "Geologie ist keine richtige Wissenschaft!";
+ fuzzer_printf("Calling usrsctp_sendv()\n");
+ usrsctp_sendv(socket_client, sendbuffer, strlen(sendbuffer), NULL, 0, NULL, 0, SCTP_SENDV_NOINFO, 0);
+ }
+
+ // Required: INIT-ACK and COOKIE-ACK
+ if (data[0] & FUZZ_B_INJECT_INIT_ACK &&
+ data[0] & FUZZ_B_INJECT_COOKIE_ACK &&
+ data[0] & FUZZ_B_SEND_STREAM_RESET) {
+ fuzzer_printf("Sending Stream Reset for all streams\n");
+
+ struct sctp_reset_streams srs;
+ memset(&srs, 0, sizeof(struct sctp_reset_streams));
+ srs.srs_flags = SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_OUTGOING;
+ result = usrsctp_setsockopt(socket_client, IPPROTO_SCTP, SCTP_RESET_STREAMS, &srs, sizeof(struct sctp_reset_streams));
+ assert(result == 0);
+ }
+
+ // Required: INIT-ACK and COOKIE-ACK
+ if (data[0] & FUZZ_B_INJECT_INIT_ACK &&
+ data[0] & FUZZ_B_INJECT_COOKIE_ACK &&
+ data[0] & FUZZ_B_INJECT_DATA) {
+
+ if (data[0] & FUZZ_B_I_DATA_SUPPORT) {
+ fuzzer_printf("Injecting I-DATA\n");
+ common_header = (struct sctp_common_header*) fuzz_i_data;
+ common_header->verification_tag = assoc_vtag;
+ dump_packet(fuzz_i_data, 232, SCTP_DUMP_INBOUND);
+ usrsctp_conninput((void *)1, fuzz_i_data, 232, 0);
+ } else {
+ fuzzer_printf("Injecting DATA\n");
+ common_header = (struct sctp_common_header*) fuzz_data;
+ common_header->verification_tag = assoc_vtag;
+ dump_packet(fuzz_data, 228, SCTP_DUMP_INBOUND);
+ usrsctp_conninput((void *)1, fuzz_data, 228, 0);
+ }
+ }
+
+ fuzz_packet_buffer = malloc(data_size - 1 + COMMON_HEADER_SIZE);
+ memcpy(fuzz_packet_buffer, fuzz_common_header, COMMON_HEADER_SIZE); // common header
+ memcpy(fuzz_packet_buffer + COMMON_HEADER_SIZE, data + 1, data_size - 1);
+
+ common_header = (struct sctp_common_header*) fuzz_packet_buffer;
+ common_header->verification_tag = assoc_vtag;
+
+ fuzzer_printf("Injecting FUZZER-Packet\n");
+ dump_packet(fuzz_packet_buffer, data_size - 1 + COMMON_HEADER_SIZE, SCTP_DUMP_INBOUND);
+ usrsctp_conninput((void *)1, fuzz_packet_buffer, data_size - 1 + COMMON_HEADER_SIZE, 0);
+
+ free(fuzz_packet_buffer);
+
+ fuzzer_printf("Calling usrsctp_close()\n");
+ usrsctp_close(socket_client);
+#if 0
+ fuzzer_printf("Calling usrsctp_finish()\n");
+ while (usrsctp_finish() != 0) {
+ }
+ fuzzer_printf("Done!\n");
+#endif
+
+ return (0);
+}
+
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 05:30:02 +0000