X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=unix%2Fuxplink.c;h=2d4259b91abd5e80ae955c8f1047a38777f632f1;hb=3f29d939ee6d20789eff0fb779592f64fc4bf892;hp=64c3cabcdacc66afd58e6ec87b9684e14725a863;hpb=9e20c81bc9c945565dd182854eeffa03b63f830a;p=PuTTY.git

diff --git a/unix/uxplink.c b/unix/uxplink.c
index 64c3cabc..2d4259b9 100644
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -25,7 +25,7 @@
 
 #define MAX_STDIN_BACKLOG 4096
 
-void *logctx;
+static void *logctx;
 
 static struct termios orig_termios;
 
@@ -305,6 +305,9 @@ char *get_ttymode(void *frontend, const char *mode)
 #endif
 #if defined(XCASE)
     GET_BOOL("XCASE", XCASE, c_lflag, );
+#endif
+#if defined(IUTF8)
+    GET_BOOL("IUTF8", IUTF8, c_iflag, );
 #endif
     /* Configuration of ECHO */
 #if defined(ECHOCTL)
@@ -533,8 +536,8 @@ void sigwinch(int signum)
  * In Plink our selects are synchronous, so these functions are
  * empty stubs.
  */
-int uxsel_input_add(int fd, int rwx) { return 0; }
-void uxsel_input_remove(int id) { }
+uxsel_id *uxsel_input_add(int fd, int rwx) { return NULL; }
+void uxsel_input_remove(uxsel_id *id) { }
 
 /*
  * Short description of parameters.
@@ -555,6 +558,8 @@ static void usage(void)
     printf("  -P port   connect to specified port\n");
     printf("  -l user   connect with specified username\n");
     printf("  -batch    disable all interactive prompts\n");
+    printf("  -proxycmd command\n");
+    printf("            use 'command' as local proxy\n");
     printf("  -sercfg configuration-string (e.g. 19200,8,n,1,X)\n");
     printf("            Specify the serial configuration (serial only)\n");
     printf("The following options only apply to SSH connections:\n");
@@ -581,13 +586,20 @@ static void usage(void)
     printf("  -N        don't start a shell/command (SSH-2 only)\n");
     printf("  -nc host:port\n");
     printf("            open tunnel in place of session (SSH-2 only)\n");
+    printf("  -sshlog file\n");
+    printf("  -sshrawlog file\n");
+    printf("            log protocol details to a file\n");
+    printf("  -shareexists\n");
+    printf("            test whether a connection-sharing upstream exists\n");
     exit(1);
 }
 
 static void version(void)
 {
-    printf("plink: %s\n", ver);
-    exit(1);
+    char *buildinfo_text = buildinfo("\n");
+    printf("plink: %s\n%s\n", ver, buildinfo_text);
+    sfree(buildinfo_text);
+    exit(0);
 }
 
 void frontend_net_error_pending(void) {}
@@ -595,6 +607,8 @@ void frontend_net_error_pending(void) {}
 const int share_can_be_downstream = TRUE;
 const int share_can_be_upstream = TRUE;
 
+const int buildinfo_gtk_relevant = FALSE;
+
 int main(int argc, char **argv)
 {
     int sending;
@@ -607,6 +621,7 @@ int main(int argc, char **argv)
     int errors;
     int use_subsystem = 0;
     int got_host = FALSE;
+    int just_test_share_exists = FALSE;
     unsigned long now;
     struct winsize size;
 
@@ -685,6 +700,12 @@ int main(int argc, char **argv)
                     --argc;
 		    provide_xrm_string(*++argv);
 		}
+	    } else if (!strcmp(p, "-shareexists")) {
+                just_test_share_exists = TRUE;
+	    } else if (!strcmp(p, "-fuzznet")) {
+		conf_set_int(conf, CONF_proxy_type, PROXY_FUZZ);
+		conf_set_str(conf, CONF_proxy_telnet_command,
+			     "%host");
 	    } else {
 		fprintf(stderr, "plink: unknown option \"%s\"\n", p);
 		errors = 1;
@@ -934,6 +955,11 @@ int main(int argc, char **argv)
 	perror("pipe");
 	exit(1);
     }
+    /* We don't want the signal handler to block if the pipe's full. */
+    nonblock(signalpipe[0]);
+    nonblock(signalpipe[1]);
+    cloexec(signalpipe[0]);
+    cloexec(signalpipe[1]);
     putty_signal(SIGWINCH, sigwinch);
 
     /*
@@ -949,7 +975,7 @@ int main(int argc, char **argv)
     uxsel_init();
 
     /*
-     * Unix Plink doesn't provide any way to add forwardings after the
+     * Plink doesn't provide any way to add forwardings after the
      * connection is set up, so if there are none now, we can safely set
      * the "simple" flag.
      */
@@ -959,6 +985,19 @@ int main(int argc, char **argv)
 	!conf_get_str_nthstrkey(conf, CONF_portfwd, 0))
 	conf_set_int(conf, CONF_ssh_simple, TRUE);
 
+    if (just_test_share_exists) {
+        if (!back->test_for_upstream) {
+            fprintf(stderr, "Connection sharing not supported for connection "
+                    "type '%s'\n", back->name);
+            return 1;
+        }
+        if (back->test_for_upstream(conf_get_str(conf, CONF_host),
+                                    conf_get_int(conf, CONF_port), conf))
+            return 0;
+        else
+            return 1;
+    }
+
     /*
      * Start up the connection.
      */
@@ -970,6 +1009,11 @@ int main(int argc, char **argv)
 	/* nodelay is only useful if stdin is a terminal device */
 	int nodelay = conf_get_int(conf, CONF_tcp_nodelay) && isatty(0);
 
+	/* This is a good place for a fuzzer to fork us. */
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+	__AFL_INIT();
+#endif
+
 	error = back->init(NULL, &backhandle, conf,
 			   conf_get_str(conf, CONF_host),
 			   conf_get_int(conf, CONF_port),
@@ -1084,6 +1128,9 @@ int main(int argc, char **argv)
             ret = select(maxfd, &rset, &wset, &xset, NULL);
         }
 
+        if (ret < 0 && errno == EINTR)
+            continue;
+
 	if (ret < 0) {
 	    perror("select");
 	    exit(1);