Miscellaneous fixes to finish up `remove-statics'. rlogin.c had a

[u/mdw/putty] / unix / uxplink.c

diff --git a/unix/uxplink.c b/unix/uxplink.c
index 2e5017a..2778bc5 100644 (file)
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -4,11 +4,15 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <errno.h>
 #include <assert.h>
 #include <stdarg.h>
+#include <signal.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <termios.h>
+#include <pwd.h>
+#include <sys/ioctl.h>
 
 /* More helpful version of the FD_SET macro, to also handle maxfd. */
 #define FD_SET_MAX(fd, max, set) do { \
@@ -68,8 +72,71 @@ struct termios orig_termios;
 
 static Backend *back;
 static void *backhandle;
+static Config cfg;
 
-char *x_get_default(char *key)
+/*
+ * Default settings that are specific to pterm.
+ */
+char *platform_default_s(const char *name)
+{
+    if (!strcmp(name, "X11Display"))
+       return getenv("DISPLAY");
+    if (!strcmp(name, "TermType"))
+       return getenv("TERM");
+    if (!strcmp(name, "UserName")) {
+       /*
+        * Remote login username will default to the local username.
+        */
+       struct passwd *p;
+       uid_t uid = getuid();
+       char *user, *ret = NULL;
+
+       /*
+        * First, find who we think we are using getlogin. If this
+        * agrees with our uid, we'll go along with it. This should
+        * allow sharing of uids between several login names whilst
+        * coping correctly with people who have su'ed.
+        */
+       user = getlogin();
+       setpwent();
+       if (user)
+           p = getpwnam(user);
+       else
+           p = NULL;
+       if (p && p->pw_uid == uid) {
+           /*
+            * The result of getlogin() really does correspond to
+            * our uid. Fine.
+            */
+           ret = user;
+       } else {
+           /*
+            * If that didn't work, for whatever reason, we'll do
+            * the simpler version: look up our uid in the password
+            * file and map it straight to a name.
+            */
+           p = getpwuid(uid);
+           ret = p->pw_name;
+       }
+       endpwent();
+
+       return ret;
+    }
+    return NULL;
+}
+
+int platform_default_i(const char *name, int def)
+{
+    if (!strcmp(name, "TermWidth") ||
+       !strcmp(name, "TermHeight")) {
+       struct winsize size;
+       if (ioctl(0, TIOCGWINSZ, (void *)&size) >= 0)
+           return (!strcmp(name, "TermWidth") ? size.ws_col : size.ws_row);
+    }
+    return def;
+}
+
+char *x_get_default(const char *key)
 {
     return NULL;                      /* this is a stub */
 }
@@ -144,6 +211,13 @@ int from_backend(void *frontend_handle, int is_stderr, char *data, int len)
     return osize + esize;
 }
 
+int signalpipe[2];
+
+void sigwinch(int signum)
+{
+    write(signalpipe[1], "x", 1);
+}
+
 /*
  * Short description of parameters.
  */
@@ -228,7 +302,8 @@ int main(int argc, char **argv)
     while (--argc) {
        char *p = *++argv;
        if (*p == '-') {
-           int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL), 1);
+           int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL),
+                                           1, &cfg);
            if (ret == -2) {
                fprintf(stderr,
                        "plink: option \"%s\" requires an argument\n", p);
@@ -406,7 +481,7 @@ int main(int argc, char **argv)
     /*
      * Perform command-line overrides on session configuration.
      */
-    cmdline_run_saved();
+    cmdline_run_saved(&cfg);
 
     /*
      * Trim a colon suffix off the hostname if it's there.
@@ -456,26 +531,35 @@ int main(int argc, char **argv)
     if (portnumber != -1)
        cfg.port = portnumber;
 
+    /*
+     * Set up the pipe we'll use to tell us about SIGWINCH.
+     */
+    if (pipe(signalpipe) < 0) {
+       perror("pipe");
+       exit(1);
+    }
+    putty_signal(SIGWINCH, sigwinch);
+
     sk_init();
 
     /*
      * Start up the connection.
      */
-    logctx = log_init(NULL);
+    logctx = log_init(NULL, &cfg);
     {
        char *error;
        char *realhost;
        /* nodelay is only useful if stdin is a terminal device */
        int nodelay = cfg.tcp_nodelay && isatty(0);
 
-       error = back->init(NULL, &backhandle, cfg.host, cfg.port,
+       error = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port,
                           &realhost, nodelay);
        if (error) {
            fprintf(stderr, "Unable to open connection:\n%s\n", error);
            return 1;
        }
        back->provide_logctx(backhandle, logctx);
-       ldisc = ldisc_create(NULL, back, backhandle, NULL);
+       ldisc = ldisc_create(&cfg, NULL, back, backhandle, NULL);
        sfree(realhost);
     }
     connopen = 1;
@@ -501,6 +585,8 @@ int main(int argc, char **argv)
        FD_ZERO(&xset);
        maxfd = 0;
 
+       FD_SET_MAX(signalpipe[0], maxfd, rset);
+
        if (connopen && !sending &&
            back->socket(backhandle) != NULL &&
            back->sendok(backhandle) &&
@@ -546,7 +632,9 @@ int main(int argc, char **argv)
                FD_SET_MAX(socket, maxfd, xset);
        }
 
-       ret = select(maxfd, &rset, &wset, &xset, NULL);
+       do {
+           ret = select(maxfd, &rset, &wset, &xset, NULL);
+       } while (ret < 0 && errno == EINTR);
 
        if (ret < 0) {
            perror("select");
@@ -568,6 +656,14 @@ int main(int argc, char **argv)
                select_result(socket, 2);
        }
 
+       if (FD_ISSET(signalpipe[0], &rset)) {
+           char c[1];
+           struct winsize size;
+           read(signalpipe[0], c, 1); /* ignore its value; it'll be `x' */
+           if (ioctl(0, TIOCGWINSZ, (void *)&size) >= 0)
+               back->size(backhandle, size.ws_col, size.ws_row);
+       }
+
        if (FD_ISSET(0, &rset)) {
            char buf[4096];
            int ret;