int main(int argc, char** argv)
{
int ret = 0;
int hadBadPacket = 0;
int inum;
int port;
int saveFile = 0;
int i = 0;
int frame = ETHER_IF_FRAME_LEN;
char err[PCAP_ERRBUF_SIZE];
char filter[32];
const char *server = NULL;
struct bpf_program fp;
pcap_if_t *d;
pcap_addr_t *a;
signal(SIGINT, sig_handler);
#ifndef _WIN32
ssl_InitSniffer(); /* dll load on Windows */
#endif
ssl_Trace("./tracefile.txt", err);
if (argc == 1) {
/* normal case, user chooses device and port */
if (pcap_findalldevs(&alldevs, err) == -1)
err_sys("Error in pcap_findalldevs");
for (d = alldevs; d; d=d->next) {
printf("%d. %s", ++i, d->name);
if (d->description)
printf(" (%s)\n", d->description);
else
printf(" (No description available)\n");
}
if (i == 0)
err_sys("No interfaces found! Make sure pcap or WinPcap is"
" installed correctly and you have sufficient permissions");
printf("Enter the interface number (1-%d): ", i);
ret = scanf("%d", &inum);
if (ret != 1)
printf("scanf port failed\n");
if (inum < 1 || inum > i)
err_sys("Interface number out of range");
/* Jump to the selected adapter */
for (d = alldevs, i = 0; i < inum - 1; d = d->next, i++);
pcap = pcap_create(d->name, err);
if (pcap == NULL) printf("pcap_create failed %s\n", err);
/* get an IPv4 address */
for (a = d->addresses; a; a = a->next) {
switch(a->addr->sa_family)
{
case AF_INET:
server =
iptos(((struct sockaddr_in *)a->addr)->sin_addr.s_addr);
printf("server = %s\n", server);
break;
default:
break;
}
}
if (server == NULL)
err_sys("Unable to get device IPv4 address");
ret = pcap_set_snaplen(pcap, 65536);
if (ret != 0) printf("pcap_set_snaplen failed %s\n", pcap_geterr(pcap));
ret = pcap_set_timeout(pcap, 1000);
if (ret != 0) printf("pcap_set_timeout failed %s\n", pcap_geterr(pcap));
ret = pcap_set_buffer_size(pcap, 1000000);
if (ret != 0)
printf("pcap_set_buffer_size failed %s\n", pcap_geterr(pcap));
ret = pcap_set_promisc(pcap, 1);
if (ret != 0) printf("pcap_set_promisc failed %s\n", pcap_geterr(pcap));
ret = pcap_activate(pcap);
if (ret != 0) printf("pcap_activate failed %s\n", pcap_geterr(pcap));
printf("Enter the port to scan: ");
ret = scanf("%d", &port);
if (ret != 1)
printf("scanf port failed\n");
SNPRINTF(filter, sizeof(filter), "tcp and port %d", port);
ret = pcap_compile(pcap, &fp, filter, 0, 0);
if (ret != 0) printf("pcap_compile failed %s\n", pcap_geterr(pcap));
ret = pcap_setfilter(pcap, &fp);
if (ret != 0) printf("pcap_setfilter failed %s\n", pcap_geterr(pcap));
ret = ssl_SetPrivateKey(server, port, "../../certs/server-key.pem",
FILETYPE_PEM, NULL, err);
if (ret != 0) {
printf("Please run directly from sslSniffer/sslSnifferTest dir\n");
}
#ifdef HAVE_SNI
{
char altName[128];
printf("Enter alternate SNI: ");
ret = scanf("%s", altName);
if (strnlen(altName, 128) > 0) {
ret = ssl_SetNamedPrivateKey(altName,
server, port, "../../certs/server-key.pem",
FILETYPE_PEM, NULL, err);
if (ret != 0) {
printf("Please run directly from "
"sslSniffer/sslSnifferTest dir\n");
}
}
}
#endif
}
else if (argc >= 3) {
saveFile = 1;
pcap = pcap_open_offline(argv[1], err);
if (pcap == NULL) {
printf("pcap_open_offline failed %s\n", err);
ret = -1;
}
else {
const char* passwd = NULL;
/* defaults for server and port */
port = 443;
server = "127.0.0.1";
if (argc >= 4)
server = argv[3];
if (argc >= 5)
port = atoi(argv[4]);
if (argc >= 6)
passwd = argv[5];
ret = ssl_SetPrivateKey(server, port, argv[2],
FILETYPE_PEM, passwd, err);
}
}
else {
/* usage error */
printf( "usage: ./snifftest or ./snifftest dump pemKey"
" [server] [port] [password]\n");
exit(EXIT_FAILURE);
}
if (ret != 0)
err_sys(err);
if (pcap_datalink(pcap) == DLT_NULL)
frame = NULL_IF_FRAME_LEN;
while (1) {
static int packetNumber = 0;
struct pcap_pkthdr header;
const unsigned char* packet = pcap_next(pcap, &header);
packetNumber++;
if (packet) {
byte data[65535+16384]; /* may have a partial 16k record cached */
if (header.caplen > 40) { /* min ip(20) + min tcp(20) */
packet += frame;
header.caplen -= frame;
}
else
continue;
ret = ssl_DecodePacket(packet, header.caplen, data, err);
if (ret < 0) {
printf("ssl_Decode ret = %d, %s\n", ret, err);
hadBadPacket = 1;
}
if (ret > 0) {
data[ret] = 0;
printf("SSL App Data(%d:%d):%s\n", packetNumber, ret, data);
}
}
else if (saveFile)
break; /* we're done reading file */
}
FreeAll();
return hadBadPacket ? EXIT_FAILURE : EXIT_SUCCESS;
}
int main(int argc, char** argv)
{
int ret;
int inum;
int port;
int i = 0;
char err[PCAP_ERRBUF_SIZE];
char filter[32];
char loopback = 0;
char *server = NULL;
struct bpf_program fp;
pcap_if_t *d;
pcap_addr_t *a;
signal(SIGINT, sig_handler);
#ifndef _WIN32
ssl_InitSniffer();
#endif
ssl_Trace("./tracefile.txt", err);
if (pcap_findalldevs(&alldevs, err) == -1)
err_sys("Error in pcap_findalldevs");
for (d = alldevs; d; d=d->next) {
printf("%d. %s", ++i, d->name);
if (d->description)
printf(" (%s)\n", d->description);
else
printf(" (No description available)\n");
}
if (i == 0)
err_sys("No interfaces found! Make sure pcap or WinPcap is installed");
printf("Enter the interface number (1-%d): ", i);
scanf("%d", &inum);
if (inum < 1 || inum > i)
err_sys("Interface number out of range");
/* Jump to the selected adapter */
for (d = alldevs, i = 0; i < inum - 1; d = d->next, i++);
pcap = pcap_create(d->name, err);
if (pcap == NULL) printf("pcap_create failed %s\n", err);
if (d->flags & PCAP_IF_LOOPBACK)
loopback = 1;
/* get an IPv4 address */
for (a = d->addresses; a; a = a->next) {
switch(a->addr->sa_family)
{
case AF_INET:
server =iptos(((struct sockaddr_in *)a->addr)->sin_addr.s_addr);
printf("server = %s\n", server);
break;
}
}
if (server == NULL)
err_sys("Unable to get device IPv4 address");
ret = pcap_set_snaplen(pcap, 65536);
if (ret != 0) printf("pcap_set_snaplen failed %s\n", pcap_geterr(pcap));
ret = pcap_set_timeout(pcap, 1000);
if (ret != 0) printf("pcap_set_timeout failed %s\n", pcap_geterr(pcap));
ret = pcap_set_buffer_size(pcap, 1000000);
if (ret != 0)
printf("pcap_set_buffer_size failed %s\n", pcap_geterr(pcap));
ret = pcap_set_promisc(pcap, 1);
if (ret != 0) printf("pcap_set_promisc failed %s\n", pcap_geterr(pcap));
ret = pcap_activate(pcap);
if (ret != 0) printf("pcap_activate failed %s\n", pcap_geterr(pcap));
printf("Enter the port to scan: ");
scanf("%d", &port);
SNPRINTF(filter, sizeof(filter), "tcp and port %d", port);
ret = pcap_compile(pcap, &fp, filter, 0, 0);
if (ret != 0) printf("pcap_compile failed %s\n", pcap_geterr(pcap));
ret = pcap_setfilter(pcap, &fp);
if (ret != 0) printf("pcap_setfilter failed %s\n", pcap_geterr(pcap));
ret = ssl_SetPrivateKey(server, port, "../../certs/server-key.pem",
FILETYPE_PEM, NULL, err);
if (ret != 0)
err_sys(err);
while (1) {
struct pcap_pkthdr header;
const unsigned char* packet = pcap_next(pcap, &header);
if (packet) {
byte data[65535];
if (header.caplen > 40) { /* min ip(20) + min tcp(20) */
int frame = ETHER_IF_FRAME_LEN;
if (loopback)
frame = LOCAL_IF_FRAME_LEN;
packet += frame;
header.caplen -= frame;
}
else
continue;
ret = ssl_DecodePacket(packet, header.caplen, data, err);
if (ret < 0)
printf("ssl_Decode ret = %d\n", ret);
if (ret > 0) {
data[ret] = 0;
printf("SSL App Data:%s\n", data);
}
}
}
return 0;
}