mirror of https://github.com/tmux/tmux.git
423 lines
9.1 KiB
C
423 lines
9.1 KiB
C
/* $OpenBSD$ */
|
|
|
|
/*
|
|
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
|
|
*
|
|
* 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/time.h>
|
|
|
|
#include <paths.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <time.h>
|
|
|
|
#include "tmux.h"
|
|
|
|
/* Global session list. */
|
|
struct sessions sessions;
|
|
struct sessions dead_sessions;
|
|
|
|
struct winlink *session_next_activity(struct session *, struct winlink *);
|
|
struct winlink *session_previous_activity(struct session *, struct winlink *);
|
|
|
|
void
|
|
session_alert_cancel(struct session *s, struct winlink *wl)
|
|
{
|
|
struct session_alert *sa, *sb;
|
|
|
|
sa = SLIST_FIRST(&s->alerts);
|
|
while (sa != NULL) {
|
|
sb = sa;
|
|
sa = SLIST_NEXT(sa, entry);
|
|
|
|
if (wl == NULL || sb->wl == wl) {
|
|
SLIST_REMOVE(&s->alerts, sb, session_alert, entry);
|
|
xfree(sb);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
session_alert_add(struct session *s, struct window *w, int type)
|
|
{
|
|
struct session_alert *sa;
|
|
struct winlink *wl;
|
|
|
|
RB_FOREACH(wl, winlinks, &s->windows) {
|
|
if (wl == s->curw)
|
|
continue;
|
|
|
|
if (wl->window == w &&
|
|
!session_alert_has(s, wl, type)) {
|
|
sa = xmalloc(sizeof *sa);
|
|
sa->wl = wl;
|
|
sa->type = type;
|
|
SLIST_INSERT_HEAD(&s->alerts, sa, entry);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
session_alert_has(struct session *s, struct winlink *wl, int type)
|
|
{
|
|
struct session_alert *sa;
|
|
|
|
SLIST_FOREACH(sa, &s->alerts, entry) {
|
|
if (sa->wl == wl && sa->type == type)
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
session_alert_has_window(struct session *s, struct window *w, int type)
|
|
{
|
|
struct session_alert *sa;
|
|
|
|
SLIST_FOREACH(sa, &s->alerts, entry) {
|
|
if (sa->wl->window == w && sa->type == type)
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Find session by name. */
|
|
struct session *
|
|
session_find(const char *name)
|
|
{
|
|
struct session *s;
|
|
u_int i;
|
|
|
|
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
|
|
s = ARRAY_ITEM(&sessions, i);
|
|
if (s != NULL && strcmp(s->name, name) == 0)
|
|
return (s);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* Create a new session. */
|
|
struct session *
|
|
session_create(const char *name, const char *cmd, const char *cwd,
|
|
struct environ *env, struct termios *tio, int idx, u_int sx, u_int sy,
|
|
char **cause)
|
|
{
|
|
struct session *s;
|
|
u_int i;
|
|
|
|
s = xmalloc(sizeof *s);
|
|
s->references = 0;
|
|
s->flags = 0;
|
|
s->activity = time(NULL);
|
|
|
|
if (gettimeofday(&s->tv, NULL) != 0)
|
|
fatal("gettimeofday failed");
|
|
|
|
s->curw = NULL;
|
|
SLIST_INIT(&s->lastw);
|
|
RB_INIT(&s->windows);
|
|
SLIST_INIT(&s->alerts);
|
|
|
|
paste_init_stack(&s->buffers);
|
|
|
|
options_init(&s->options, &global_s_options);
|
|
environ_init(&s->environ);
|
|
if (env != NULL)
|
|
environ_copy(env, &s->environ);
|
|
|
|
s->tio = NULL;
|
|
if (tio != NULL) {
|
|
s->tio = xmalloc(sizeof *s->tio);
|
|
memcpy(s->tio, tio, sizeof *s->tio);
|
|
}
|
|
|
|
s->sx = sx;
|
|
s->sy = sy;
|
|
|
|
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
|
|
if (ARRAY_ITEM(&sessions, i) == NULL) {
|
|
ARRAY_SET(&sessions, i, s);
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_LENGTH(&sessions))
|
|
ARRAY_ADD(&sessions, s);
|
|
|
|
if (name != NULL)
|
|
s->name = xstrdup(name);
|
|
else
|
|
xasprintf(&s->name, "%u", i);
|
|
if (session_new(s, NULL, cmd, cwd, idx, cause) == NULL) {
|
|
session_destroy(s);
|
|
return (NULL);
|
|
}
|
|
session_select(s, RB_ROOT(&s->windows)->idx);
|
|
|
|
log_debug("session %s created", s->name);
|
|
|
|
return (s);
|
|
}
|
|
|
|
/* Destroy a session. */
|
|
void
|
|
session_destroy(struct session *s)
|
|
{
|
|
u_int i;
|
|
|
|
log_debug("session %s destroyed", s->name);
|
|
|
|
if (session_index(s, &i) != 0)
|
|
fatalx("session not found");
|
|
ARRAY_SET(&sessions, i, NULL);
|
|
while (!ARRAY_EMPTY(&sessions) && ARRAY_LAST(&sessions) == NULL)
|
|
ARRAY_TRUNC(&sessions, 1);
|
|
|
|
if (s->tio != NULL)
|
|
xfree(s->tio);
|
|
|
|
session_alert_cancel(s, NULL);
|
|
environ_free(&s->environ);
|
|
options_free(&s->options);
|
|
paste_free_stack(&s->buffers);
|
|
|
|
while (!SLIST_EMPTY(&s->lastw))
|
|
winlink_stack_remove(&s->lastw, SLIST_FIRST(&s->lastw));
|
|
while (!RB_EMPTY(&s->windows))
|
|
winlink_remove(&s->windows, RB_ROOT(&s->windows));
|
|
|
|
xfree(s->name);
|
|
|
|
for (i = 0; i < ARRAY_LENGTH(&dead_sessions); i++) {
|
|
if (ARRAY_ITEM(&dead_sessions, i) == NULL) {
|
|
ARRAY_SET(&dead_sessions, i, s);
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_LENGTH(&dead_sessions))
|
|
ARRAY_ADD(&dead_sessions, s);
|
|
s->flags |= SESSION_DEAD;
|
|
}
|
|
|
|
/* Find session index. */
|
|
int
|
|
session_index(struct session *s, u_int *i)
|
|
{
|
|
for (*i = 0; *i < ARRAY_LENGTH(&sessions); (*i)++) {
|
|
if (s == ARRAY_ITEM(&sessions, *i))
|
|
return (0);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
/* Create a new window on a session. */
|
|
struct winlink *
|
|
session_new(struct session *s,
|
|
const char *name, const char *cmd, const char *cwd, int idx, char **cause)
|
|
{
|
|
struct window *w;
|
|
struct environ env;
|
|
const char *shell;
|
|
u_int hlimit;
|
|
|
|
environ_init(&env);
|
|
environ_copy(&global_environ, &env);
|
|
environ_copy(&s->environ, &env);
|
|
server_fill_environ(s, &env);
|
|
|
|
shell = options_get_string(&s->options, "default-shell");
|
|
if (*shell == '\0' || areshell(shell))
|
|
shell = _PATH_BSHELL;
|
|
|
|
hlimit = options_get_number(&s->options, "history-limit");
|
|
w = window_create(
|
|
name, cmd, shell, cwd, &env, s->tio, s->sx, s->sy, hlimit, cause);
|
|
if (w == NULL) {
|
|
environ_free(&env);
|
|
return (NULL);
|
|
}
|
|
environ_free(&env);
|
|
|
|
if (options_get_number(&s->options, "set-remain-on-exit"))
|
|
options_set_number(&w->options, "remain-on-exit", 1);
|
|
|
|
return (session_attach(s, w, idx, cause));
|
|
}
|
|
|
|
/* Attach a window to a session. */
|
|
struct winlink *
|
|
session_attach(struct session *s, struct window *w, int idx, char **cause)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
if ((wl = winlink_add(&s->windows, w, idx)) == NULL)
|
|
xasprintf(cause, "index in use: %d", idx);
|
|
return (wl);
|
|
}
|
|
|
|
/* Detach a window from a session. */
|
|
int
|
|
session_detach(struct session *s, struct winlink *wl)
|
|
{
|
|
if (s->curw == wl &&
|
|
session_last(s) != 0 && session_previous(s, 0) != 0)
|
|
session_next(s, 0);
|
|
|
|
session_alert_cancel(s, wl);
|
|
winlink_stack_remove(&s->lastw, wl);
|
|
winlink_remove(&s->windows, wl);
|
|
if (RB_EMPTY(&s->windows)) {
|
|
session_destroy(s);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* Return if session has window. */
|
|
int
|
|
session_has(struct session *s, struct window *w)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
RB_FOREACH(wl, winlinks, &s->windows) {
|
|
if (wl->window == w)
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
struct winlink *
|
|
session_next_activity(struct session *s, struct winlink *wl)
|
|
{
|
|
while (wl != NULL) {
|
|
if (session_alert_has(s, wl, WINDOW_BELL))
|
|
break;
|
|
if (session_alert_has(s, wl, WINDOW_ACTIVITY))
|
|
break;
|
|
if (session_alert_has(s, wl, WINDOW_CONTENT))
|
|
break;
|
|
wl = winlink_next(&s->windows, wl);
|
|
}
|
|
return (wl);
|
|
}
|
|
|
|
/* Move session to next window. */
|
|
int
|
|
session_next(struct session *s, int activity)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
if (s->curw == NULL)
|
|
return (-1);
|
|
|
|
wl = winlink_next(&s->windows, s->curw);
|
|
if (activity)
|
|
wl = session_next_activity(s, wl);
|
|
if (wl == NULL) {
|
|
wl = RB_MIN(winlinks, &s->windows);
|
|
if (activity && ((wl = session_next_activity(s, wl)) == NULL))
|
|
return (-1);
|
|
}
|
|
if (wl == s->curw)
|
|
return (1);
|
|
winlink_stack_remove(&s->lastw, wl);
|
|
winlink_stack_push(&s->lastw, s->curw);
|
|
s->curw = wl;
|
|
session_alert_cancel(s, wl);
|
|
return (0);
|
|
}
|
|
|
|
struct winlink *
|
|
session_previous_activity(struct session *s, struct winlink *wl)
|
|
{
|
|
while (wl != NULL) {
|
|
if (session_alert_has(s, wl, WINDOW_BELL))
|
|
break;
|
|
if (session_alert_has(s, wl, WINDOW_ACTIVITY))
|
|
break;
|
|
if (session_alert_has(s, wl, WINDOW_CONTENT))
|
|
break;
|
|
wl = winlink_previous(&s->windows, wl);
|
|
}
|
|
return (wl);
|
|
}
|
|
|
|
/* Move session to previous window. */
|
|
int
|
|
session_previous(struct session *s, int activity)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
if (s->curw == NULL)
|
|
return (-1);
|
|
|
|
wl = winlink_previous(&s->windows, s->curw);
|
|
if (activity)
|
|
wl = session_previous_activity(s, wl);
|
|
if (wl == NULL) {
|
|
wl = RB_MAX(winlinks, &s->windows);
|
|
if (activity && (wl = session_previous_activity(s, wl)) == NULL)
|
|
return (-1);
|
|
}
|
|
if (wl == s->curw)
|
|
return (1);
|
|
winlink_stack_remove(&s->lastw, wl);
|
|
winlink_stack_push(&s->lastw, s->curw);
|
|
s->curw = wl;
|
|
session_alert_cancel(s, wl);
|
|
return (0);
|
|
}
|
|
|
|
/* Move session to specific window. */
|
|
int
|
|
session_select(struct session *s, int idx)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
wl = winlink_find_by_index(&s->windows, idx);
|
|
if (wl == NULL)
|
|
return (-1);
|
|
if (wl == s->curw)
|
|
return (1);
|
|
winlink_stack_remove(&s->lastw, wl);
|
|
winlink_stack_push(&s->lastw, s->curw);
|
|
s->curw = wl;
|
|
session_alert_cancel(s, wl);
|
|
return (0);
|
|
}
|
|
|
|
/* Move session to last used window. */
|
|
int
|
|
session_last(struct session *s)
|
|
{
|
|
struct winlink *wl;
|
|
|
|
wl = SLIST_FIRST(&s->lastw);
|
|
if (wl == NULL)
|
|
return (-1);
|
|
if (wl == s->curw)
|
|
return (1);
|
|
|
|
winlink_stack_remove(&s->lastw, wl);
|
|
winlink_stack_push(&s->lastw, s->curw);
|
|
s->curw = wl;
|
|
session_alert_cancel(s, wl);
|
|
return (0);
|
|
}
|