mirror of
https://github.com/tmate-io/tmate.git
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377 lines
8.3 KiB
C
377 lines
8.3 KiB
C
/* $Id: server-fn.c,v 1.21 2007-10-19 10:21:35 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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#include "tmux.h"
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/* Find session from sessid. */
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struct session *
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server_find_sessid(struct sessid *sid, char **cause)
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{
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struct session *s;
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u_int i, n;
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if (*sid->name != '\0') {
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sid->name[(sizeof sid->name) - 1] = '\0';
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if ((s = session_find(sid->name)) == NULL) {
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xasprintf(cause, "session not found: %s", sid->name);
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return (NULL);
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}
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return (s);
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}
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if (sid->pid != -1) {
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if (sid->pid != getpid()) {
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xasprintf(cause, "wrong server: %lld", sid->pid);
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return (NULL);
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}
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if (sid->idx > ARRAY_LENGTH(&sessions)) {
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xasprintf(cause, "index out of range: %u", sid->idx);
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return (NULL);
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}
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if ((s = ARRAY_ITEM(&sessions, sid->idx)) == NULL) {
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xasprintf(cause, "session doesn't exist: %u", sid->idx);
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return (NULL);
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}
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return (s);
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}
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s = NULL;
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n = 0;
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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if (ARRAY_ITEM(&sessions, i) != NULL) {
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s = ARRAY_ITEM(&sessions, i);
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n++;
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}
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}
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if (s == NULL) {
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xasprintf(cause, "no sessions found");
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return (NULL);
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}
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if (n != 1) {
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xasprintf(cause, "multiple sessions and session not specified");
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return (NULL);
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}
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return (s);
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}
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void
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server_write_client(
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struct client *c, enum hdrtype type, const void *buf, size_t len)
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{
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struct hdr hdr;
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log_debug("writing %d to client %d", type, c->fd);
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hdr.type = type;
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hdr.size = len;
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buffer_write(c->out, &hdr, sizeof hdr);
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if (buf != NULL)
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buffer_write(c->out, buf, len);
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}
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void
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server_write_session(
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struct session *s, enum hdrtype type, const void *buf, size_t len)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session == s)
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server_write_client(c, type, buf, len);
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}
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}
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void
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server_write_window_cur(
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struct window *w, enum hdrtype type, const void *buf, size_t len)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL &&
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c->session != NULL && c->session->window == w) {
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if (c->flags & CLIENT_HOLD) /* XXX OUTPUT only */
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continue;
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server_write_client(c, type, buf, len);
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}
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}
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}
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void
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server_write_window_all(
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struct window *w, enum hdrtype type, const void *buf, size_t len)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (session_has(c->session, w)) {
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if (c->flags & CLIENT_HOLD) /* XXX OUTPUT only */
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continue;
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server_write_client(c, type, buf, len);
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}
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}
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}
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void
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server_status_client(struct client *c)
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{
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struct hdr hdr;
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size_t size;
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if (status_lines == 0 || c->sy <= status_lines)
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return;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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status_write(c);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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}
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void
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server_clear_client(struct client *c)
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{
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struct screen *s = &c->session->window->screen;
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struct hdr hdr;
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size_t size;
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u_int i;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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input_store_zero(c->out, CODE_CURSOROFF);
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for (i = 0; i < s->sy; i++) {
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input_store_two(c->out, CODE_CURSORMOVE, i + 1, 1);
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input_store_zero(c->out, CODE_CLEARLINE);
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}
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input_store_two(c->out, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
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if (s->mode & MODE_CURSOR)
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input_store_zero(c->out, CODE_CURSORON);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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}
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void
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server_redraw_client(struct client *c)
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{
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struct screen *s = &c->session->window->screen;
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struct hdr hdr;
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size_t size;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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screen_draw(s, c->out, 0, s->sy - 1);
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size = BUFFER_USED(c->out) - size;
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log_debug("redrawing screen, %zu bytes", size);
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if (size != 0) {
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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} else
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buffer_reverse_add(c->out, sizeof hdr);
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server_status_client(c);
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}
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void
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server_redraw_session(struct session *s)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session == s)
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server_redraw_client(c);
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}
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}
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void
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server_status_session(struct session *s)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session == s)
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server_status_client(c);
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}
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}
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void
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server_clear_window_cur(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session != NULL && c->session->window == w)
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server_clear_client(c);
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}
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}
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void
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server_clear_window_all(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (session_has(c->session, w))
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server_redraw_client(c);
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}
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}
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void
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server_redraw_window_cur(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session != NULL && c->session->window == w)
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server_redraw_client(c);
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}
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}
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void
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server_redraw_window_all(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (session_has(c->session, w))
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server_redraw_client(c);
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}
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}
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void
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server_status_window_cur(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c != NULL && c->session != NULL && c->session->window == w)
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server_status_client(c);
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}
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}
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void
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server_status_window_all(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (session_has(c->session, w))
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server_status_client(c);
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}
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}
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void
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server_write_message(struct client *c, const char *fmt, ...)
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{
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struct hdr hdr;
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va_list ap;
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char *msg;
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size_t size;
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u_int i;
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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input_store_zero(c->out, CODE_CURSOROFF);
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input_store_two(c->out, CODE_CURSORMOVE, c->sy, 1);
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input_store_two(c->out, CODE_ATTRIBUTES, ATTR_REVERSE, 0x88);
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va_start(ap, fmt);
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xvasprintf(&msg, fmt, ap);
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va_end(ap);
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if (strlen(msg) > c->sx - 1)
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msg[c->sx - 1] = '\0';
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buffer_write(c->out, msg, strlen(msg));
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for (i = strlen(msg); i < c->sx; i++)
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input_store8(c->out, ' ');
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xfree(msg);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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hdr.type = MSG_PAUSE;
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hdr.size = 0;
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buffer_write(c->out, &hdr, sizeof hdr);
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buffer_ensure(c->out, sizeof hdr);
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buffer_add(c->out, sizeof hdr);
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size = BUFFER_USED(c->out);
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if (status_lines == 0) {
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screen_draw(
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&c->session->window->screen, c->out, c->sy - 1, c->sy - 1);
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} else
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status_write(c);
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size = BUFFER_USED(c->out) - size;
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hdr.type = MSG_DATA;
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hdr.size = size;
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memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
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}
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