just checkpointing

--HG--
extra : convert_revision : fbbf404290f3fea3dfa9f6f53eba9389057e9044

1 files changed, 88 insertions, 0 deletions

diff --git a/tcp-accept.c b/tcp-accept.c
new file mode 100644
index 0000000..1fb80dd
--- /dev/null
+++ b/tcp-accept.c
@@ -0,0 +1,88 @@
+#include "includes.h"
+#include "ssh.h"
+#include "tcp-accept.h"
+#include "dbutil.h"
+#include "session.h"
+#include "buffer.h"
+#include "packet.h"
+#include "listener.h"
+#include "runopts.h"
+
+#ifndef DISABLE_TCP_ACCEPT
+
+static void accept_tcp(struct Listener *listener, int sock) {
+
+	int fd;
+	struct sockaddr_storage addr;
+	int len;
+	char ipstring[NI_MAXHOST], portstring[NI_MAXSERV];
+	struct TCPListener *tcpinfo = (struct TCPListener*)(listener->typedata);
+
+	len = sizeof(addr);
+
+	fd = accept(sock, (struct sockaddr*)&addr, &len);
+	if (fd < 0) {
+		return;
+	}
+
+	if (getnameinfo((struct sockaddr*)&addr, len, ipstring, sizeof(ipstring),
+				portstring, sizeof(portstring), 
+				NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
+		return;
+	}
+
+	if (send_msg_channel_open_init(fd, tcpinfo->chantype) == DROPBEAR_SUCCESS) {
+
+		buf_putstring(ses.writepayload, tcpinfo->addr, strlen(tcpinfo->addr));
+		buf_putint(ses.writepayload, tcpinfo->port);
+		buf_putstring(ses.writepayload, ipstring, strlen(ipstring));
+		buf_putint(ses.writepayload, atol(portstring));
+		encrypt_packet();
+
+	} else {
+		/* XXX debug? */
+		close(fd);
+	}
+}
+
+static void cleanup_tcp(struct Listener *listener) {
+
+	struct TCPListener *tcpinfo = (struct TCPListener*)(listener->typedata);
+
+	m_free(tcpinfo->addr);
+	m_free(tcpinfo);
+}
+
+
+int listen_tcpfwd(struct TCPListener* tcpinfo) {
+
+	char portstring[6]; /* "65535\0" */
+	int socks[DROPBEAR_MAX_SOCKS];
+	struct Listener *listener = NULL;
+	int nsocks;
+
+	TRACE(("enter listen_tcpfwd"));
+
+	/* first we try to bind, so don't need to do so much cleanup on failure */
+	snprintf(portstring, sizeof(portstring), "%d", tcpinfo->port);
+	nsocks = dropbear_listen(tcpinfo->addr, portstring, socks, 
+			DROPBEAR_MAX_SOCKS, NULL, &ses.maxfd);
+	if (nsocks < 0) {
+		TRACE(("leave listen_tcpfwd: dropbear_listen failed"));
+		return DROPBEAR_FAILURE;
+	}
+
+	listener = new_listener(socks, nsocks, CHANNEL_ID_TCPFORWARDED, tcpinfo, 
+			accept_tcp, cleanup_tcp);
+
+	if (listener == NULL) {
+		m_free(tcpinfo);
+		TRACE(("leave listen_tcpfwd: listener failed"));
+		return DROPBEAR_FAILURE;
+	}
+
+	TRACE(("leave listen_tcpfwd: success"));
+	return DROPBEAR_SUCCESS;
+}
+
+#endif /* DISABLE_REMOTETCPFWD */