Robert de Bath's asynchronous-connect patch. Helps a lot in port

[u/mdw/putty] / plink.c

diff --git a/plink.c b/plink.c
index 4217116..77724a5 100644 (file)
--- a/plink.c
+++ b/plink.c
@@ -122,6 +122,46 @@ void verify_ssh_host_key(char *host, int port, char *keytype,
     }
 }
 
+/*
+ * Ask whether the selected cipher is acceptable (since it was
+ * below the configured 'warn' threshold).
+ * cs: 0 = both ways, 1 = client->server, 2 = server->client
+ */
+void askcipher(char *ciphername, int cs)
+{
+    HANDLE hin;
+    DWORD savemode, i;
+
+    static const char msg[] =
+       "The first %scipher supported by the server is\n"
+       "%s, which is below the configured warning threshold.\n"
+       "Continue with connection? (y/n) ";
+    static const char abandoned[] = "Connection abandoned.\n";
+
+    char line[32];
+
+    fprintf(stderr, msg,
+           (cs == 0) ? "" :
+           (cs == 1) ? "client-to-server " :
+                       "server-to-client ",
+           ciphername);
+    fflush(stderr);
+
+    hin = GetStdHandle(STD_INPUT_HANDLE);
+    GetConsoleMode(hin, &savemode);
+    SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
+                        ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
+    ReadFile(hin, line, sizeof(line) - 1, &i, NULL);
+    SetConsoleMode(hin, savemode);
+
+    if (line[0] == 'y' || line[0] == 'Y') {
+       return;
+    } else {
+       fprintf(stderr, abandoned);
+       exit(0);
+    }
+}
+
 HANDLE inhandle, outhandle, errhandle;
 DWORD orig_console_mode;
 
@@ -274,11 +314,7 @@ void try_output(int is_stderr)
 
 int from_backend(int is_stderr, char *data, int len)
 {
-    int pos;
-    DWORD ret;
     HANDLE h = (is_stderr ? errhandle : outhandle);
-    void *writedata;
-    int writelen;
     int osize, esize;
 
     if (is_stderr) {
@@ -316,7 +352,8 @@ char *do_select(SOCKET skt, int startup)
 {
     int events;
     if (startup) {
-       events = FD_READ | FD_WRITE | FD_OOB | FD_CLOSE | FD_ACCEPT;
+       events = (FD_CONNECT | FD_READ | FD_WRITE |
+                 FD_OOB | FD_CLOSE | FD_ACCEPT);
     } else {
        events = 0;
     }
@@ -431,6 +468,7 @@ int main(int argc, char **argv)
                    command[cmdlen++] = d;
                } while (c != EOF);
                cfg.remote_cmd_ptr = command;
+               cfg.remote_cmd_ptr2 = NULL;
                cfg.nopty = TRUE;      /* command => no terminal */
            } else if (!strcmp(p, "-P") && argc > 1) {
                --argc, portnumber = atoi(*++argv);
@@ -730,6 +768,8 @@ int main(int argc, char **argv)
                if (!WSAEnumNetworkEvents(socket, NULL, &things)) {
                    noise_ultralight(socket);
                    noise_ultralight(things.lNetworkEvents);
+                   if (things.lNetworkEvents & FD_CONNECT)
+                       connopen &= select_result(wp, (LPARAM) FD_CONNECT);
                    if (things.lNetworkEvents & FD_READ)
                        connopen &= select_result(wp, (LPARAM) FD_READ);
                    if (things.lNetworkEvents & FD_CLOSE)