+ * Ask whether to wipe a session log file before writing to it.
+ * Returns 2 for wipe, 1 for append, 0 for cancel (don't log).
+ */
+int askappend(char *filename)
+{
+ HANDLE hin;
+ DWORD savemode, i;
+
+ static const char msgtemplate[] =
+ "The session log file \"%.*s\" already exists.\n"
+ "You can overwrite it with a new session log,\n"
+ "append your session log to the end of it,\n"
+ "or disable session logging for this session.\n"
+ "Enter \"y\" to wipe the file, \"n\" to append to it,\n"
+ "or just press Return to disable logging.\n"
+ "Wipe the log file? (y/n, Return cancels logging) ";
+
+ char line[32];
+
+ fprintf(stderr, msgtemplate, FILENAME_MAX, filename);
+ 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 2;
+ else if (line[0] == 'n' || line[0] == 'N')
+ return 1;
+ else
+ return 0;
+}
+
+/*
+ * Warn about the obsolescent key file format.
+ */
+void old_keyfile_warning(void)
+{
+ static const char message[] =
+ "You are loading an SSH 2 private key which has an\n"
+ "old version of the file format. This means your key\n"
+ "file is not fully tamperproof. Future versions of\n"
+ "PuTTY may stop supporting this private key format,\n"
+ "so we recommend you convert your key to the new\n"
+ "format.\n"
+ "\n"
+ "Once the key is loaded into PuTTYgen, you can perform\n"
+ "this conversion simply by saving it again.\n";
+
+ fputs(message, stderr);
+}
+
+/*