1 files changed, 128 insertions, 0 deletions
diff --git a/utils/sshutils.c b/utils/sshutils.c
new file mode 100644
index 00000000..49e82219
--- /dev/null
+++ b/utils/sshutils.c
@@ -0,0 +1,128 @@
+/*
+ * Supporting routines used in common by all the various components of
+ * the SSH system.
+ */
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include "putty.h"
+#include "ssh.h"
+#include "ssh/channel.h"
+
+/* ----------------------------------------------------------------------
+ * Centralised standard methods for other channel implementations to
+ * borrow.
+ */
+
+void chan_remotely_opened_confirmation(Channel *chan)
+{
+    unreachable("this channel type should never receive OPEN_CONFIRMATION");
+}
+
+void chan_remotely_opened_failure(Channel *chan, const char *errtext)
+{
+    unreachable("this channel type should never receive OPEN_FAILURE");
+}
+
+bool chan_default_want_close(
+    Channel *chan, bool sent_local_eof, bool rcvd_remote_eof)
+{
+    /*
+     * Default close policy: we start initiating the CHANNEL_CLOSE
+     * procedure as soon as both sides of the channel have seen EOF.
+     */
+    return sent_local_eof && rcvd_remote_eof;
+}
+
+bool chan_no_exit_status(Channel *chan, int status)
+{
+    return false;
+}
+
+bool chan_no_exit_signal(
+    Channel *chan, ptrlen signame, bool core_dumped, ptrlen msg)
+{
+    return false;
+}
+
+bool chan_no_exit_signal_numeric(
+    Channel *chan, int signum, bool core_dumped, ptrlen msg)
+{
+    return false;
+}
+
+bool chan_no_run_shell(Channel *chan)
+{
+    return false;
+}
+
+bool chan_no_run_command(Channel *chan, ptrlen command)
+{
+    return false;
+}
+
+bool chan_no_run_subsystem(Channel *chan, ptrlen subsys)
+{
+    return false;
+}
+
+bool chan_no_enable_x11_forwarding(
+    Channel *chan, bool oneshot, ptrlen authproto, ptrlen authdata,
+    unsigned screen_number)
+{
+    return false;
+}
+
+bool chan_no_enable_agent_forwarding(Channel *chan)
+{
+    return false;
+}
+
+bool chan_no_allocate_pty(
+    Channel *chan, ptrlen termtype, unsigned width, unsigned height,
+    unsigned pixwidth, unsigned pixheight, struct ssh_ttymodes modes)
+{
+    return false;
+}
+
+bool chan_no_set_env(Channel *chan, ptrlen var, ptrlen value)
+{
+    return false;
+}
+
+bool chan_no_send_break(Channel *chan, unsigned length)
+{
+    return false;
+}
+
+bool chan_no_send_signal(Channel *chan, ptrlen signame)
+{
+    return false;
+}
+
+bool chan_no_change_window_size(
+    Channel *chan, unsigned width, unsigned height,
+    unsigned pixwidth, unsigned pixheight)
+{
+    return false;
+}
+
+void chan_no_request_response(Channel *chan, bool success)
+{
+    unreachable("this channel type should never send a want-reply request");
+}
+
+/* ----------------------------------------------------------------------
+ * Other miscellaneous utility functions.
+ */
+
+void free_rportfwd(struct ssh_rportfwd *rpf)
+{
+    if (rpf) {
+        sfree(rpf->log_description);
+        sfree(rpf->shost);
+        sfree(rpf->dhost);
+        sfree(rpf);
+    }
+}