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#include "forward.h"
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include "main.h"
#include "log.h"
void start_forwarding_capture(metafile_t *mf, char *meta_info) {
int sock;
struct sockaddr_un addr;
if (mf->forward_fd >= 0) {
ilog(LOG_INFO, "Connection already established");
return;
}
#ifdef SOCK_SEQPACKET
if ((sock = socket(AF_UNIX, SOCK_SEQPACKET, 0)) == -1) {
#else
if ((sock = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1) {
#endif
ilog(LOG_ERR, "Error creating socket: %s", strerror(errno));
return;
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, forward_to, sizeof(addr.sun_path) - 1);
if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0) {
ilog(LOG_ERR, "Error setting socket non-blocking: %s", strerror(errno));
goto err;
}
if (connect(sock, (struct sockaddr*) &addr, sizeof(addr)) == -1) {
ilog(LOG_ERR, "Error connecting to socket %s : %s", addr.sun_path,
strerror(errno));
goto err;
}
if (send(sock, meta_info, strlen(meta_info), 0) == -1) {
ilog(LOG_ERR, "Error sending meta info: %s. Call will not be forwarded", strerror(errno));
goto err;
}
mf->forward_fd = sock;
return;
err:
close(sock);
}
int forward_packet(metafile_t *mf, unsigned char *buf, unsigned len) {
if (mf->forward_fd == -1) {
ilog(LOG_ERR,
"Trying to send packets, but connection not initialized!");
goto err;
}
if (send(mf->forward_fd, buf, len, 0) == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK)
ilog(LOG_DEBUG, "Dropping packet since call would block");
else
ilog(LOG_ERR, "Error sending: %s", strerror(errno));
goto err;
}
return 0;
err:
return -1;
}
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