diff options
Diffstat (limited to 'usr.bin/ssh/clientloop.c')
| -rw-r--r-- | usr.bin/ssh/clientloop.c | 122 |
1 files changed, 98 insertions, 24 deletions
diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c index bccb9be2f85..8f16d2fb9fa 100644 --- a/usr.bin/ssh/clientloop.c +++ b/usr.bin/ssh/clientloop.c @@ -59,7 +59,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: clientloop.c,v 1.39 2000/10/27 07:48:22 markus Exp $"); +RCSID("$OpenBSD: clientloop.c,v 1.40 2000/11/06 23:04:56 markus Exp $"); #include "xmalloc.h" #include "ssh.h" @@ -75,6 +75,10 @@ RCSID("$OpenBSD: clientloop.c,v 1.39 2000/10/27 07:48:22 markus Exp $"); #include "buffer.h" #include "bufaux.h" +#include <openssl/dsa.h> +#include <openssl/rsa.h> +#include "key.h" +#include "authfd.h" /* import options */ extern Options options; @@ -1016,13 +1020,99 @@ client_input_exit_status(int type, int plen, void *ctxt) quit_pending = 1; } +Channel * +client_request_forwarded_tcpip(const char *request_type, int rchan) +{ + Channel* c = NULL; + char *listen_address, *originator_address; + int listen_port, originator_port; + int sock, newch; + + /* Get rest of the packet */ + listen_address = packet_get_string(NULL); + listen_port = packet_get_int(); + originator_address = packet_get_string(NULL); + originator_port = packet_get_int(); + packet_done(); + + debug("client_request_forwarded_tcpip: listen %s port %d, originator %s port %d", + listen_address, listen_port, originator_address, originator_port); + + sock = channel_connect_by_listen_adress(listen_port); + if (sock >= 0) { + newch = channel_new("forwarded-tcpip", + SSH_CHANNEL_OPEN, sock, sock, -1, + CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0, + xstrdup(originator_address), 1); + c = channel_lookup(newch); + } + xfree(originator_address); + xfree(listen_address); + return c; +} + +Channel* +client_request_x11(const char *request_type, int rchan) +{ + Channel *c = NULL; + char *originator; + int originator_port; + int sock, newch; + + if (!options.forward_x11) { + error("Warning: ssh server tried X11 forwarding."); + error("Warning: this is probably a break in attempt by a malicious server."); + return NULL; + } + originator = packet_get_string(NULL); + if (datafellows & SSH_BUG_X11FWD) { + debug2("buggy server: x11 request w/o originator_port"); + originator_port = 0; + } else { + originator_port = packet_get_int(); + } + packet_done(); + /* XXX check permission */ + sock = x11_connect_display(); + if (sock >= 0) { + newch = channel_new("x11", + SSH_CHANNEL_X11_OPEN, sock, sock, -1, + CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0, + xstrdup("x11"), 1); + c = channel_lookup(newch); + } + xfree(originator); + return c; +} + +Channel* +client_request_agent(const char *request_type, int rchan) +{ + Channel *c = NULL; + int sock, newch; + + if (!options.forward_agent) { + error("Warning: ssh server tried agent forwarding."); + error("Warning: this is probably a break in attempt by a malicious server."); + return NULL; + } + sock = ssh_get_authentication_socket(); + if (sock >= 0) { + newch = channel_new("authentication agent connection", + SSH_CHANNEL_OPEN, sock, sock, -1, + CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0, + xstrdup("authentication agent connection"), 1); + c = channel_lookup(newch); + } + return c; +} + /* XXXX move to generic input handler */ void client_input_channel_open(int type, int plen, void *ctxt) { Channel *c = NULL; char *ctype; - int id; unsigned int len; int rchan; int rmaxpack; @@ -1036,28 +1126,12 @@ client_input_channel_open(int type, int plen, void *ctxt) debug("client_input_channel_open: ctype %s rchan %d win %d max %d", ctype, rchan, rwindow, rmaxpack); - if (strcmp(ctype, "x11") == 0 && options.forward_x11) { - int sock; - char *originator; - int originator_port; - originator = packet_get_string(NULL); - if (datafellows & SSH_BUG_X11FWD) { - debug2("buggy server: x11 request w/o originator_port"); - originator_port = 0; - } else { - originator_port = packet_get_int(); - } - packet_done(); - /* XXX check permission */ - xfree(originator); - /* XXX move to channels.c */ - sock = x11_connect_display(); - if (sock >= 0) { - id = channel_new("x11", SSH_CHANNEL_X11_OPEN, - sock, sock, -1, CHAN_X11_WINDOW_DEFAULT, - CHAN_X11_PACKET_DEFAULT, 0, xstrdup("x11"), 1); - c = channel_lookup(id); - } + if (strcmp(ctype, "forwarded-tcpip") == 0) { + c = client_request_forwarded_tcpip(ctype, rchan); + } else if (strcmp(ctype, "x11") == 0) { + c = client_request_x11(ctype, rchan); + } else if (strcmp(ctype, "auth-agent@openssh.com") == 0) { + c = client_request_agent(ctype, rchan); } /* XXX duplicate : */ if (c != NULL) { |