Adding upstream version 3.3a.upstream/3.3a

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 474 insertions, 0 deletions

diff --git a/server-fn.c b/server-fn.c
new file mode 100644
index 0000000..2a79f3e
--- /dev/null
+++ b/server-fn.c
@@ -0,0 +1,474 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/uio.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+static struct session	*server_next_session(struct session *);
+static void		 server_destroy_session_group(struct session *);
+
+void
+server_redraw_client(struct client *c)
+{
+	c->flags |= CLIENT_ALLREDRAWFLAGS;
+}
+
+void
+server_status_client(struct client *c)
+{
+	c->flags |= CLIENT_REDRAWSTATUS;
+}
+
+void
+server_redraw_session(struct session *s)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session == s)
+			server_redraw_client(c);
+	}
+}
+
+void
+server_redraw_session_group(struct session *s)
+{
+	struct session_group	*sg;
+
+	if ((sg = session_group_contains(s)) == NULL)
+		server_redraw_session(s);
+	else {
+		TAILQ_FOREACH(s, &sg->sessions, gentry)
+			server_redraw_session(s);
+	}
+}
+
+void
+server_status_session(struct session *s)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session == s)
+			server_status_client(c);
+	}
+}
+
+void
+server_status_session_group(struct session *s)
+{
+	struct session_group	*sg;
+
+	if ((sg = session_group_contains(s)) == NULL)
+		server_status_session(s);
+	else {
+		TAILQ_FOREACH(s, &sg->sessions, gentry)
+			server_status_session(s);
+	}
+}
+
+void
+server_redraw_window(struct window *w)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session != NULL && c->session->curw->window == w)
+			server_redraw_client(c);
+	}
+}
+
+void
+server_redraw_window_borders(struct window *w)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session != NULL && c->session->curw->window == w)
+			c->flags |= CLIENT_REDRAWBORDERS;
+	}
+}
+
+void
+server_status_window(struct window *w)
+{
+	struct session	*s;
+
+	/*
+	 * This is slightly different. We want to redraw the status line of any
+	 * clients containing this window rather than anywhere it is the
+	 * current window.
+	 */
+
+	RB_FOREACH(s, sessions, &sessions) {
+		if (session_has(s, w))
+			server_status_session(s);
+	}
+}
+
+void
+server_lock(void)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session != NULL)
+			server_lock_client(c);
+	}
+}
+
+void
+server_lock_session(struct session *s)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session == s)
+			server_lock_client(c);
+	}
+}
+
+void
+server_lock_client(struct client *c)
+{
+	const char	*cmd;
+
+	if (c->flags & CLIENT_CONTROL)
+		return;
+
+	if (c->flags & CLIENT_SUSPENDED)
+		return;
+
+	cmd = options_get_string(c->session->options, "lock-command");
+	if (*cmd == '\0' || strlen(cmd) + 1 > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
+		return;
+
+	tty_stop_tty(&c->tty);
+	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
+	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));
+	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
+
+	c->flags |= CLIENT_SUSPENDED;
+	proc_send(c->peer, MSG_LOCK, -1, cmd, strlen(cmd) + 1);
+}
+
+void
+server_kill_pane(struct window_pane *wp)
+{
+	struct window	*w = wp->window;
+
+	if (window_count_panes(w) == 1) {
+		server_kill_window(w, 1);
+		recalculate_sizes();
+	} else {
+		server_unzoom_window(w);
+		server_client_remove_pane(wp);
+		layout_close_pane(wp);
+		window_remove_pane(w, wp);
+		server_redraw_window(w);
+	}
+}
+
+void
+server_kill_window(struct window *w, int renumber)
+{
+	struct session	*s, *s1;
+	struct winlink	*wl;
+
+	RB_FOREACH_SAFE(s, sessions, &sessions, s1) {
+		if (!session_has(s, w))
+			continue;
+
+		server_unzoom_window(w);
+		while ((wl = winlink_find_by_window(&s->windows, w)) != NULL) {
+			if (session_detach(s, wl)) {
+				server_destroy_session_group(s);
+				break;
+			} else
+				server_redraw_session_group(s);
+		}
+
+		if (renumber)
+			server_renumber_session(s);
+	}
+	recalculate_sizes();
+}
+
+void
+server_renumber_session(struct session *s)
+{
+	struct session_group	*sg;
+
+	if (options_get_number(s->options, "renumber-windows")) {
+		if ((sg = session_group_contains(s)) != NULL) {
+			TAILQ_FOREACH(s, &sg->sessions, gentry)
+			    session_renumber_windows(s);
+		} else
+			session_renumber_windows(s);
+	}
+}
+
+void
+server_renumber_all(void)
+{
+	struct session	*s;
+
+	RB_FOREACH(s, sessions, &sessions)
+		server_renumber_session(s);
+}
+
+int
+server_link_window(struct session *src, struct winlink *srcwl,
+    struct session *dst, int dstidx, int killflag, int selectflag,
+    char **cause)
+{
+	struct winlink		*dstwl;
+	struct session_group	*srcsg, *dstsg;
+
+	srcsg = session_group_contains(src);
+	dstsg = session_group_contains(dst);
+	if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
+		xasprintf(cause, "sessions are grouped");
+		return (-1);
+	}
+
+	dstwl = NULL;
+	if (dstidx != -1)
+		dstwl = winlink_find_by_index(&dst->windows, dstidx);
+	if (dstwl != NULL) {
+		if (dstwl->window == srcwl->window) {
+			xasprintf(cause, "same index: %d", dstidx);
+			return (-1);
+		}
+		if (killflag) {
+			/*
+			 * Can't use session_detach as it will destroy session
+			 * if this makes it empty.
+			 */
+			notify_session_window("window-unlinked", dst,
+			    dstwl->window);
+			dstwl->flags &= ~WINLINK_ALERTFLAGS;
+			winlink_stack_remove(&dst->lastw, dstwl);
+			winlink_remove(&dst->windows, dstwl);
+
+			/* Force select/redraw if current. */
+			if (dstwl == dst->curw) {
+				selectflag = 1;
+				dst->curw = NULL;
+			}
+		}
+	}
+
+	if (dstidx == -1)
+		dstidx = -1 - options_get_number(dst->options, "base-index");
+	dstwl = session_attach(dst, srcwl->window, dstidx, cause);
+	if (dstwl == NULL)
+		return (-1);
+
+	if (selectflag)
+		session_select(dst, dstwl->idx);
+	server_redraw_session_group(dst);
+
+	return (0);
+}
+
+void
+server_unlink_window(struct session *s, struct winlink *wl)
+{
+	if (session_detach(s, wl))
+		server_destroy_session_group(s);
+	else
+		server_redraw_session_group(s);
+}
+
+void
+server_destroy_pane(struct window_pane *wp, int notify)
+{
+	struct window		*w = wp->window;
+	struct screen_write_ctx	 ctx;
+	struct grid_cell	 gc;
+	int			 remain_on_exit;
+	const char		*s;
+	char			*expanded;
+	u_int			 sx = screen_size_x(&wp->base);
+	u_int			 sy = screen_size_y(&wp->base);
+
+	if (wp->fd != -1) {
+#ifdef HAVE_UTEMPTER
+		utempter_remove_record(wp->fd);
+#endif
+		bufferevent_free(wp->event);
+		wp->event = NULL;
+		close(wp->fd);
+		wp->fd = -1;
+	}
+
+	remain_on_exit = options_get_number(wp->options, "remain-on-exit");
+	if (remain_on_exit != 0 && (~wp->flags & PANE_STATUSREADY))
+		return;
+	switch (remain_on_exit) {
+	case 0:
+		break;
+	case 2:
+		if (WIFEXITED(wp->status) && WEXITSTATUS(wp->status) == 0)
+			break;
+		/* FALLTHROUGH */
+	case 1:
+		if (wp->flags & PANE_STATUSDRAWN)
+			return;
+		wp->flags |= PANE_STATUSDRAWN;
+
+		gettimeofday(&wp->dead_time, NULL);
+		if (notify)
+			notify_pane("pane-died", wp);
+
+		s = options_get_string(wp->options, "remain-on-exit-format");
+		if (*s != '\0') {
+			screen_write_start_pane(&ctx, wp, &wp->base);
+			screen_write_scrollregion(&ctx, 0, sy - 1);
+			screen_write_cursormove(&ctx, 0, sy - 1, 0);
+			screen_write_linefeed(&ctx, 1, 8);
+			memcpy(&gc, &grid_default_cell, sizeof gc);
+
+			expanded = format_single(NULL, s, NULL, NULL, NULL, wp);
+			format_draw(&ctx, &gc, sx, expanded, NULL, 0);
+			free(expanded);
+
+			screen_write_stop(&ctx);
+		}
+		wp->base.mode &= ~MODE_CURSOR;
+
+		wp->flags |= PANE_REDRAW;
+		return;
+	}
+
+	if (notify)
+		notify_pane("pane-exited", wp);
+
+	server_unzoom_window(w);
+	server_client_remove_pane(wp);
+	layout_close_pane(wp);
+	window_remove_pane(w, wp);
+
+	if (TAILQ_EMPTY(&w->panes))
+		server_kill_window(w, 1);
+	else
+		server_redraw_window(w);
+}
+
+static void
+server_destroy_session_group(struct session *s)
+{
+	struct session_group	*sg;
+	struct session		*s1;
+
+	if ((sg = session_group_contains(s)) == NULL)
+		server_destroy_session(s);
+	else {
+		TAILQ_FOREACH_SAFE(s, &sg->sessions, gentry, s1) {
+			server_destroy_session(s);
+			session_destroy(s, 1, __func__);
+		}
+	}
+}
+
+static struct session *
+server_next_session(struct session *s)
+{
+	struct session *s_loop, *s_out = NULL;
+
+	RB_FOREACH(s_loop, sessions, &sessions) {
+		if (s_loop == s)
+			continue;
+		if (s_out == NULL ||
+		    timercmp(&s_loop->activity_time, &s_out->activity_time, <))
+			s_out = s_loop;
+	}
+	return (s_out);
+}
+
+static struct session *
+server_next_detached_session(struct session *s)
+{
+	struct session *s_loop, *s_out = NULL;
+
+	RB_FOREACH(s_loop, sessions, &sessions) {
+		if (s_loop == s || s_loop->attached)
+			continue;
+		if (s_out == NULL ||
+		    timercmp(&s_loop->activity_time, &s_out->activity_time, <))
+			s_out = s_loop;
+	}
+	return (s_out);
+}
+
+void
+server_destroy_session(struct session *s)
+{
+	struct client	*c;
+	struct session	*s_new;
+	int		 detach_on_destroy;
+
+	detach_on_destroy = options_get_number(s->options, "detach-on-destroy");
+	if (detach_on_destroy == 0)
+		s_new = server_next_session(s);
+	else if (detach_on_destroy == 2)
+		s_new = server_next_detached_session(s);
+	else
+		s_new = NULL;
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->session != s)
+			continue;
+		server_client_set_session(c, s_new);
+		if (s_new == NULL)
+			c->flags |= CLIENT_EXIT;
+	}
+	recalculate_sizes();
+}
+
+void
+server_check_unattached(void)
+{
+	struct session	*s;
+
+	/*
+	 * If any sessions are no longer attached and have destroy-unattached
+	 * set, collect them.
+	 */
+	RB_FOREACH(s, sessions, &sessions) {
+		if (s->attached != 0)
+			continue;
+		if (options_get_number (s->options, "destroy-unattached"))
+			session_destroy(s, 1, __func__);
+	}
+}
+
+void
+server_unzoom_window(struct window *w)
+{
+	if (window_unzoom(w) == 0)
+		server_redraw_window(w);
+}