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- (djm) OpenBSD CVS Sync:
- markus@cvs.openbsd.org 2001/01/29 12:42:35 [canohost.c canohost.h channels.c clientloop.c] add get_peer_ipaddr(socket), x11-fwd in ssh2 requires ipaddr, not DNS
This commit is contained in:
Damien Miller
parent
5e953217f1
commit
d83ff35d66
@ -3,6 +3,9 @@
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- markus@cvs.openbsd.org 2001/01/29 09:55:37
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[channels.c channels.h clientloop.c serverloop.c]
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fix select overflow; ok deraadt@ and stevesk@
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- markus@cvs.openbsd.org 2001/01/29 12:42:35
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[canohost.c canohost.h channels.c clientloop.c]
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add get_peer_ipaddr(socket), x11-fwd in ssh2 requires ipaddr, not DNS
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20000129
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- (stevesk) sftp-server.c: use %lld vs. %qd
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71
canohost.c
71
canohost.c
@ -12,7 +12,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: canohost.c,v 1.18 2001/01/21 19:05:45 markus Exp $");
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RCSID("$OpenBSD: canohost.c,v 1.19 2001/01/29 19:42:33 markus Exp $");
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#include "packet.h"
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#include "xmalloc.h"
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@ -187,6 +187,34 @@ get_canonical_hostname()
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return canonical_host_name;
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}
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/*
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* Returns the remote IP-address of socket as a string. The returned
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* string must be freed.
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*/
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char *
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get_peer_ipaddr(int socket)
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{
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struct sockaddr_storage from;
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socklen_t fromlen;
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char ntop[NI_MAXHOST];
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/* Get IP address of client. */
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fromlen = sizeof(from);
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memset(&from, 0, sizeof(from));
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if (getpeername(socket, (struct sockaddr *) & from, &fromlen) < 0) {
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debug("get_peer_ipaddr: getpeername failed: %.100s", strerror(errno));
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return NULL;
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}
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/* Get the IP address in ascii. */
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if (getnameinfo((struct sockaddr *)&from, fromlen, ntop, sizeof(ntop),
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NULL, 0, NI_NUMERICHOST) != 0) {
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error("get_peer_ipaddr: getnameinfo NI_NUMERICHOST failed");
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return NULL;
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}
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return xstrdup(ntop);
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}
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/*
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* Returns the IP-address of the remote host as a string. The returned
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* string must not be freed.
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@ -196,38 +224,19 @@ const char *
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get_remote_ipaddr()
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{
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static char *canonical_host_ip = NULL;
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struct sockaddr_storage from;
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socklen_t fromlen;
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int socket;
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char ntop[NI_MAXHOST];
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/* Check whether we have chached the name. */
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if (canonical_host_ip != NULL)
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return canonical_host_ip;
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/* If not a socket, return UNKNOWN. */
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if (!packet_connection_is_on_socket()) {
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canonical_host_ip = xstrdup("UNKNOWN");
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return canonical_host_ip;
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/* Check whether we have cached the ipaddr. */
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if (canonical_host_ip == NULL) {
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if (packet_connection_is_on_socket()) {
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canonical_host_ip =
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get_peer_ipaddr(packet_get_connection_in());
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if (canonical_host_ip == NULL)
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fatal_cleanup();
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} else {
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/* If not on socket, return UNKNOWN. */
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canonical_host_ip = xstrdup("UNKNOWN");
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}
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}
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/* Get client socket. */
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socket = packet_get_connection_in();
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/* Get IP address of client. */
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fromlen = sizeof(from);
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memset(&from, 0, sizeof(from));
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if (getpeername(socket, (struct sockaddr *) & from, &fromlen) < 0) {
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debug("getpeername failed: %.100s", strerror(errno));
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fatal_cleanup();
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}
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/* Get the IP address in ascii. */
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if (getnameinfo((struct sockaddr *)&from, fromlen, ntop, sizeof(ntop),
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NULL, 0, NI_NUMERICHOST) != 0)
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fatal("get_remote_hostname: getnameinfo NI_NUMERICHOST failed");
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canonical_host_ip = xstrdup(ntop);
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/* Return ip address string. */
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return canonical_host_ip;
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}
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@ -1,4 +1,4 @@
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/* $OpenBSD: canohost.h,v 1.2 2001/01/29 01:58:15 niklas Exp $ */
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/* $OpenBSD: canohost.h,v 1.3 2001/01/29 19:42:35 markus Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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@ -25,12 +25,13 @@ char *get_remote_hostname(int socket);
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const char *get_canonical_hostname(void);
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/*
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* Returns the remote IP address as an ascii string. The value need not be
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* freed by the caller.
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* Returns the IP-address of the remote host as a string. The returned
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* string must not be freed.
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*/
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const char *get_remote_ipaddr(void);
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/* Returns the port number of the peer of the socket. */
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/* Returns the ipaddr/port number of the peer of the socket. */
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char * get_peer_ipaddr(int socket);
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int get_peer_port(int sock);
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/* Returns the port number of the remote/local host. */
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14
channels.c
14
channels.c
@ -40,7 +40,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: channels.c,v 1.84 2001/01/29 16:55:36 markus Exp $");
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RCSID("$OpenBSD: channels.c,v 1.85 2001/01/29 19:42:35 markus Exp $");
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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@ -546,7 +546,7 @@ channel_post_x11_listener(Channel *c, fd_set * readset, fd_set * writeset)
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struct sockaddr addr;
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int newsock, newch;
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socklen_t addrlen;
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char buf[16384], *remote_hostname;
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char buf[16384], *remote_ipaddr;
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int remote_port;
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if (FD_ISSET(c->sock, readset)) {
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@ -557,10 +557,10 @@ channel_post_x11_listener(Channel *c, fd_set * readset, fd_set * writeset)
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error("accept: %.100s", strerror(errno));
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return;
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}
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remote_hostname = get_remote_hostname(newsock);
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remote_ipaddr = get_peer_ipaddr(newsock);
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remote_port = get_peer_port(newsock);
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snprintf(buf, sizeof buf, "X11 connection from %.200s port %d",
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remote_hostname, remote_port);
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remote_ipaddr, remote_port);
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newch = channel_new("x11",
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SSH_CHANNEL_OPENING, newsock, newsock, -1,
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@ -572,8 +572,8 @@ channel_post_x11_listener(Channel *c, fd_set * readset, fd_set * writeset)
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packet_put_int(newch);
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packet_put_int(c->local_window_max);
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packet_put_int(c->local_maxpacket);
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/* originator host and port */
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packet_put_cstring(remote_hostname);
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/* originator ipaddr and port */
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packet_put_cstring(remote_ipaddr);
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if (datafellows & SSH_BUG_X11FWD) {
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debug("ssh2 x11 bug compat mode");
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} else {
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@ -587,7 +587,7 @@ channel_post_x11_listener(Channel *c, fd_set * readset, fd_set * writeset)
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packet_put_string(buf, strlen(buf));
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packet_send();
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}
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xfree(remote_hostname);
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xfree(remote_ipaddr);
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}
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}
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@ -59,7 +59,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: clientloop.c,v 1.46 2001/01/29 16:55:36 markus Exp $");
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RCSID("$OpenBSD: clientloop.c,v 1.47 2001/01/29 19:42:35 markus Exp $");
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#include "ssh.h"
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#include "ssh1.h"
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@ -1069,6 +1069,8 @@ client_request_x11(const char *request_type, int rchan)
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}
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packet_done();
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/* XXX check permission */
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debug("client_request_x11: request from %s %d", originator,
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originator_port);
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sock = x11_connect_display();
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if (sock >= 0) {
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newch = channel_new("x11",
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