+static void sink(char *targ, char *src);
+/* GUI Adaptation - Sept 2000 */
+static void tell_char(FILE *stream, char c);
+static void tell_str(FILE *stream, char *str);
+static void tell_user(FILE *stream, char *fmt, ...);
+static void send_char_msg(unsigned int msg_id, char c);
+static void send_str_msg(unsigned int msg_id, char *str);
+static void gui_update_stats(char *name, unsigned long size,
+ int percentage, unsigned long elapsed);
+
+void logevent(char *string) { }
+
+void ldisc_send(char *buf, int len) {
+ /*
+ * This is only here because of the calls to ldisc_send(NULL,
+ * 0) in ssh.c. Nothing in PSCP actually needs to use the ldisc
+ * as an ldisc. So if we get called with any real data, I want
+ * to know about it.
+ */
+ assert(len == 0);
+}
+
+void verify_ssh_host_key(char *host, int port, char *keytype,
+ char *keystr, char *fingerprint) {
+ int ret;
+
+ static const char absentmsg[] =
+ "The server's host key is not cached in the registry. You\n"
+ "have no guarantee that the server is the computer you\n"
+ "think it is.\n"
+ "The server's key fingerprint is:\n"
+ "%s\n"
+ "If you trust this host, enter \"y\" to add the key to\n"
+ "PuTTY's cache and carry on connecting.\n"
+ "If you do not trust this host, enter \"n\" to abandon the\n"
+ "connection.\n"
+ "Continue connecting? (y/n) ";
+
+ static const char wrongmsg[] =
+ "WARNING - POTENTIAL SECURITY BREACH!\n"
+ "The server's host key does not match the one PuTTY has\n"
+ "cached in the registry. This means that either the\n"
+ "server administrator has changed the host key, or you\n"
+ "have actually connected to another computer pretending\n"
+ "to be the server.\n"
+ "The new key fingerprint is:\n"
+ "%s\n"
+ "If you were expecting this change and trust the new key,\n"
+ "enter Yes to update PuTTY's cache and continue connecting.\n"
+ "If you want to carry on connecting but without updating\n"
+ "the cache, enter No.\n"
+ "If you want to abandon the connection completely, press\n"
+ "Return to cancel. Pressing Return is the ONLY guaranteed\n"
+ "safe choice.\n"
+ "Update cached key? (y/n, Return cancels connection) ";
+
+ static const char abandoned[] = "Connection abandoned.\n";
+
+ char line[32];
+
+ /*
+ * Verify the key against the registry.
+ */
+ ret = verify_host_key(host, port, keytype, keystr);
+
+ if (ret == 0) /* success - key matched OK */
+ return;
+ if (ret == 2) { /* key was different */
+ fprintf(stderr, wrongmsg, fingerprint);
+ if (fgets(line, sizeof(line), stdin) &&
+ line[0] != '\0' && line[0] != '\n') {
+ if (line[0] == 'y' || line[0] == 'Y')
+ store_host_key(host, port, keytype, keystr);
+ } else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+ }
+ if (ret == 1) { /* key was absent */
+ fprintf(stderr, absentmsg, fingerprint);
+ if (fgets(line, sizeof(line), stdin) &&
+ (line[0] == 'y' || line[0] == 'Y'))
+ store_host_key(host, port, keytype, keystr);
+ else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+ }
+}
+
+/* GUI Adaptation - Sept 2000 */
+static void send_msg(HWND h, UINT message, WPARAM wParam)
+{
+ while (!PostMessage( h, message, wParam, 0))
+ SleepEx(1000,TRUE);
+}
+
+static void tell_char(FILE *stream, char c)
+{
+ if (!gui_mode)
+ fputc(c, stream);
+ else
+ {
+ unsigned int msg_id = WM_STD_OUT_CHAR;
+ if (stream == stderr) msg_id = WM_STD_ERR_CHAR;
+ send_msg( (HWND)atoi(gui_hwnd), msg_id, (WPARAM)c );
+ }
+}
+
+static void tell_str(FILE *stream, char *str)
+{
+ unsigned int i;
+
+ for( i = 0; i < strlen(str); ++i )
+ tell_char(stream, str[i]);
+}
+
+static void tell_user(FILE *stream, char *fmt, ...)
+{
+ char str[0x100]; /* Make the size big enough */
+ va_list ap;
+ va_start(ap, fmt);
+ vsprintf(str, fmt, ap);
+ va_end(ap);
+ strcat(str, "\n");
+ tell_str(stream, str);
+}
+
+static void gui_update_stats(char *name, unsigned long size, int percentage, unsigned long elapsed)
+{
+ unsigned int i;
+
+ if (strcmp(name,statname) != 0)
+ {
+ for( i = 0; i < strlen(name); ++i )
+ send_msg( (HWND)atoi(gui_hwnd), WM_STATS_CHAR, (WPARAM)name[i]);
+ send_msg( (HWND)atoi(gui_hwnd), WM_STATS_CHAR, (WPARAM)'\n' );
+ strcpy(statname,name);
+ }
+ if (statsize != size)
+ {
+ send_msg( (HWND)atoi(gui_hwnd), WM_STATS_SIZE, (WPARAM)size );
+ statsize = size;
+ }
+ if (statelapsed != elapsed)
+ {
+ send_msg( (HWND)atoi(gui_hwnd), WM_STATS_ELAPSED, (WPARAM)elapsed );
+ statelapsed = elapsed;
+ }
+ if (statperct != percentage)
+ {
+ send_msg( (HWND)atoi(gui_hwnd), WM_STATS_PERCENT, (WPARAM)percentage );
+ statperct = percentage;
+ }
+}