- djm@cvs.openbsd.org 2009/11/20 00:54:01

[openssh.git] / nchan.c

diff --git a/nchan.c b/nchan.c
index aee3f37b0a0ea609e962f1c47d39dc2f90b171ca..160445e5a26a62aaaf8b44db4cb2b8903312eab3 100644 (file)
--- a/nchan.c
+++ b/nchan.c
@@ -1,3 +1,4 @@
+/* $OpenBSD: nchan.c,v 1.62 2008/11/07 18:50:18 stevesk Exp $ */
 /*
  * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl.  All rights reserved.
  *
@@ -23,8 +24,15 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: nchan.c,v 1.51 2004/07/11 17:48:47 deraadt Exp $");
 
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "openbsd-compat/sys-queue.h"
 #include "ssh1.h"
 #include "ssh2.h"
 #include "buffer.h"
@@ -70,6 +78,7 @@ static void   chan_send_ieof1(Channel *);
 static void    chan_send_oclose1(Channel *);
 static void    chan_send_close2(Channel *);
 static void    chan_send_eof2(Channel *);
+static void    chan_send_eow2(Channel *);
 
 /* helper */
 static void    chan_shutdown_write(Channel *);
@@ -298,6 +307,17 @@ chan_rcvd_close2(Channel *c)
                break;
        }
 }
+void
+chan_rcvd_eow(Channel *c)
+{
+       debug2("channel %d: rcvd eow", c->self);
+       switch (c->istate) {
+       case CHAN_INPUT_OPEN:
+               chan_shutdown_read(c);
+               chan_set_istate(c, CHAN_INPUT_CLOSED);
+               break;
+       }
+}
 static void
 chan_rcvd_eof2(Channel *c)
 {
@@ -314,6 +334,8 @@ chan_write_failed2(Channel *c)
        case CHAN_OUTPUT_OPEN:
        case CHAN_OUTPUT_WAIT_DRAIN:
                chan_shutdown_write(c);
+               if (strcmp(c->ctype, "session") == 0)
+                       chan_send_eow2(c);
                chan_set_ostate(c, CHAN_OUTPUT_CLOSED);
                break;
        default:
@@ -356,6 +378,23 @@ chan_send_close2(Channel *c)
                c->flags |= CHAN_CLOSE_SENT;
        }
 }
+static void
+chan_send_eow2(Channel *c)
+{
+       debug2("channel %d: send eow", c->self);
+       if (c->ostate == CHAN_OUTPUT_CLOSED) {
+               error("channel %d: must not sent eow on closed output",
+                   c->self);
+               return;
+       }
+       if (!(datafellows & SSH_NEW_OPENSSH))
+               return;
+       packet_start(SSH2_MSG_CHANNEL_REQUEST);
+       packet_put_int(c->remote_id);
+       packet_put_cstring("eow@openssh.com");
+       packet_put_char(0);
+       packet_send();
+}
 
 /* shared */
 
@@ -447,12 +486,12 @@ chan_shutdown_write(Channel *c)
        if (c->sock != -1) {
                if (shutdown(c->sock, SHUT_WR) < 0)
                        debug2("channel %d: chan_shutdown_write: "
-                           "shutdown() failed for fd%d: %.100s",
+                           "shutdown() failed for fd %d: %.100s",
                            c->self, c->sock, strerror(errno));
        } else {
                if (channel_close_fd(&c->wfd) < 0)
                        logit("channel %d: chan_shutdown_write: "
-                           "close() failed for fd%d: %.100s",
+                           "close() failed for fd %d: %.100s",
                            c->self, c->wfd, strerror(errno));
        }
 }
@@ -471,13 +510,13 @@ chan_shutdown_read(Channel *c)
                if (shutdown(c->sock, SHUT_RD) < 0
                    && errno != ENOTCONN)
                        error("channel %d: chan_shutdown_read: "
-                           "shutdown() failed for fd%d [i%d o%d]: %.100s",
+                           "shutdown() failed for fd %d [i%d o%d]: %.100s",
                            c->self, c->sock, c->istate, c->ostate,
                            strerror(errno));
        } else {
                if (channel_close_fd(&c->rfd) < 0)
                        logit("channel %d: chan_shutdown_read: "
-                           "close() failed for fd%d: %.100s",
+                           "close() failed for fd %d: %.100s",
                            c->self, c->rfd, strerror(errno));
        }
 }