tmate/server-fn.c

287 lines
6.6 KiB
C

/* $Id: server-fn.c,v 1.19 2007-10-04 19:22:26 nicm Exp $ */
/*
* 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 <string.h>
#include <unistd.h>
#include "tmux.h"
/* Find session from sessid. */
struct session *
server_find_sessid(struct sessid *sid, char **cause)
{
struct session *s;
u_int i, n;
if (*sid->name != '\0') {
sid->name[(sizeof sid->name) - 1] = '\0';
if ((s = session_find(sid->name)) == NULL) {
xasprintf(cause, "session not found: %s", sid->name);
return (NULL);
}
return (s);
}
if (sid->pid != -1) {
if (sid->pid != getpid()) {
xasprintf(cause, "wrong server: %lld", sid->pid);
return (NULL);
}
if (sid->idx > ARRAY_LENGTH(&sessions)) {
xasprintf(cause, "index out of range: %u", sid->idx);
return (NULL);
}
if ((s = ARRAY_ITEM(&sessions, sid->idx)) == NULL) {
xasprintf(cause, "session doesn't exist: %u", sid->idx);
return (NULL);
}
return (s);
}
s = NULL;
n = 0;
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
if (ARRAY_ITEM(&sessions, i) != NULL) {
s = ARRAY_ITEM(&sessions, i);
n++;
}
}
if (s == NULL) {
xasprintf(cause, "no sessions found");
return (NULL);
}
if (n != 1) {
xasprintf(cause, "multiple sessions and session not specified");
return (NULL);
}
return (s);
}
void
server_write_client(
struct client *c, enum hdrtype type, const void *buf, size_t len)
{
struct hdr hdr;
log_debug("writing %d to client %d", type, c->fd);
hdr.type = type;
hdr.size = len;
buffer_write(c->out, &hdr, sizeof hdr);
if (buf != NULL)
buffer_write(c->out, buf, len);
}
void
server_write_session(
struct session *s, enum hdrtype type, const void *buf, size_t len)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL && c->session == s)
server_write_client(c, type, buf, len);
}
}
void
server_write_window(
struct window *w, enum hdrtype type, const void *buf, size_t len)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL &&
c->session != NULL && c->session->window == w) {
if (c->flags & CLIENT_HOLD) /* XXX OUTPUT only */
continue;
server_write_client(c, type, buf, len);
}
}
}
void
server_redraw_status(struct client *c)
{
struct hdr hdr;
size_t size;
if (status_lines == 0 || c->sy <= status_lines)
return;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
status_write(c);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
void
server_clear_client(struct client *c)
{
struct screen *s = &c->session->window->screen;
struct hdr hdr;
size_t size;
u_int i;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
input_store_zero(c->out, CODE_CURSOROFF);
for (i = 0; i < s->sy; i++) {
input_store_two(c->out, CODE_CURSORMOVE, i + 1, 1);
input_store_zero(c->out, CODE_CLEARLINE);
}
input_store_two(c->out, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
if (s->mode & MODE_CURSOR)
input_store_zero(c->out, CODE_CURSORON);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
void
server_redraw_client(struct client *c)
{
struct screen *s = &c->session->window->screen;
struct hdr hdr;
size_t size;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
screen_draw(s, c->out, 0, s->sy - 1);
size = BUFFER_USED(c->out) - size;
log_debug("redrawing screen, %zu bytes", size);
if (size != 0) {
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
} else
buffer_reverse_add(c->out, sizeof hdr);
server_redraw_status(c);
}
void
server_redraw_session(struct session *s)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL && c->session == s)
server_redraw_client(c);
}
}
void
server_clear_window(struct window *w)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL && c->session != NULL && c->session->window == w)
server_clear_client(c);
}
}
void
server_redraw_window(struct window *w)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL && c->session != NULL && c->session->window == w)
server_redraw_client(c);
}
}
void
server_write_message(struct client *c, const char *fmt, ...)
{
struct hdr hdr;
va_list ap;
char *msg;
size_t size;
u_int i;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
input_store_zero(c->out, CODE_CURSOROFF);
input_store_two(c->out, CODE_CURSORMOVE, c->sy, 1);
input_store_two(c->out, CODE_ATTRIBUTES, ATTR_REVERSE, 0x88);
va_start(ap, fmt);
xvasprintf(&msg, fmt, ap);
va_end(ap);
if (strlen(msg) > c->sx - 1)
msg[c->sx - 1] = '\0';
buffer_write(c->out, msg, strlen(msg));
for (i = strlen(msg); i < c->sx; i++)
input_store8(c->out, ' ');
xfree(msg);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
hdr.type = MSG_PAUSE;
hdr.size = 0;
buffer_write(c->out, &hdr, sizeof hdr);
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
if (status_lines == 0) {
screen_draw(
&c->session->window->screen, c->out, c->sy - 1, c->sy - 1);
} else
status_write(c);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}