mirror of
https://github.com/tmux/tmux.git
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35876eaab9
terminal to be switched between several different windows and programs displayed on one terminal be detached from one terminal and moved to another. ok deraadt pirofti
305 lines
6.9 KiB
C
305 lines
6.9 KiB
C
/* $OpenBSD$ */
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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 <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "tmux.h"
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int server_msg_fn_command(struct hdr *, struct client *);
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int server_msg_fn_identify(struct hdr *, struct client *);
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int server_msg_fn_resize(struct hdr *, struct client *);
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int server_msg_fn_exiting(struct hdr *, struct client *);
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int server_msg_fn_unlock(struct hdr *, struct client *);
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int server_msg_fn_wakeup(struct hdr *, struct client *);
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void printflike2 server_msg_fn_command_error(
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struct cmd_ctx *, const char *, ...);
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void printflike2 server_msg_fn_command_print(
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struct cmd_ctx *, const char *, ...);
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void printflike2 server_msg_fn_command_info(
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struct cmd_ctx *, const char *, ...);
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struct server_msg {
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enum hdrtype type;
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int (*fn)(struct hdr *, struct client *);
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};
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const struct server_msg server_msg_table[] = {
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{ MSG_IDENTIFY, server_msg_fn_identify },
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{ MSG_COMMAND, server_msg_fn_command },
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{ MSG_RESIZE, server_msg_fn_resize },
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{ MSG_EXITING, server_msg_fn_exiting },
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{ MSG_UNLOCK, server_msg_fn_unlock },
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{ MSG_WAKEUP, server_msg_fn_wakeup },
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};
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int
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server_msg_dispatch(struct client *c)
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{
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struct hdr hdr;
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const struct server_msg *msg;
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u_int i;
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int n;
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for (;;) {
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if (BUFFER_USED(c->in) < sizeof hdr)
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return (0);
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memcpy(&hdr, BUFFER_OUT(c->in), sizeof hdr);
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if (BUFFER_USED(c->in) < (sizeof hdr) + hdr.size)
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return (0);
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buffer_remove(c->in, sizeof hdr);
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for (i = 0; i < nitems(server_msg_table); i++) {
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msg = server_msg_table + i;
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if (msg->type == hdr.type) {
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if ((n = msg->fn(&hdr, c)) != 0)
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return (n);
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break;
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}
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}
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if (i == nitems(server_msg_table))
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fatalx("unexpected message");
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}
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}
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void printflike2
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server_msg_fn_command_error(struct cmd_ctx *ctx, const char *fmt, ...)
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{
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va_list ap;
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char *msg;
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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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server_write_client(ctx->cmdclient, MSG_ERROR, msg, strlen(msg));
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xfree(msg);
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}
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void printflike2
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server_msg_fn_command_print(struct cmd_ctx *ctx, const char *fmt, ...)
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{
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va_list ap;
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char *msg;
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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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server_write_client(ctx->cmdclient, MSG_PRINT, msg, strlen(msg));
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xfree(msg);
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}
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void printflike2
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server_msg_fn_command_info(struct cmd_ctx *ctx, const char *fmt, ...)
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{
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va_list ap;
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char *msg;
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if (be_quiet)
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return;
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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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server_write_client(ctx->cmdclient, MSG_PRINT, msg, strlen(msg));
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xfree(msg);
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}
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int
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server_msg_fn_command(struct hdr *hdr, struct client *c)
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{
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struct msg_command_data data;
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struct cmd_ctx ctx;
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struct cmd_list *cmdlist;
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struct cmd *cmd;
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if (hdr->size < sizeof data)
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fatalx("bad MSG_COMMAND size");
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buffer_read(c->in, &data, sizeof data);
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cmdlist = cmd_list_recv(c->in);
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server_activity = time(NULL);
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ctx.error = server_msg_fn_command_error;
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ctx.print = server_msg_fn_command_print;
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ctx.info = server_msg_fn_command_info;
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ctx.msgdata = &data;
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ctx.curclient = NULL;
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ctx.cursession = NULL;
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ctx.cmdclient = c;
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if (data.pid != -1) {
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TAILQ_FOREACH(cmd, cmdlist, qentry) {
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if (cmd->entry->flags & CMD_CANTNEST) {
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server_msg_fn_command_error(&ctx,
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"sessions should be nested with care. "
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"unset $TMUX to force");
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cmd_list_free(cmdlist);
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server_write_client(c, MSG_EXIT, NULL, 0);
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return (0);
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}
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}
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}
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if (cmd_list_exec(cmdlist, &ctx) != 1)
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server_write_client(c, MSG_EXIT, NULL, 0);
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cmd_list_free(cmdlist);
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return (0);
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}
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int
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server_msg_fn_identify(struct hdr *hdr, struct client *c)
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{
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struct msg_identify_data data;
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char *term;
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if (hdr->size < sizeof data)
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fatalx("bad MSG_IDENTIFY size");
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buffer_read(c->in, &data, sizeof data);
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term = cmd_recv_string(c->in);
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log_debug("identify msg from client: %u,%u (%d)",
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data.sx, data.sy, data.version);
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if (data.version != PROTOCOL_VERSION) {
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#define MSG "protocol version mismatch"
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server_write_client(c, MSG_ERROR, MSG, (sizeof MSG) - 1);
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#undef MSG
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return (0);
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}
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c->tty.sx = data.sx;
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c->tty.sy = data.sy;
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c->cwd = NULL;
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if (*data.cwd != '\0')
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c->cwd = xstrdup(data.cwd);
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data.tty[(sizeof data.tty) - 1] = '\0';
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tty_init(&c->tty, data.tty, term);
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if (data.flags & IDENTIFY_UTF8)
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c->tty.flags |= TTY_UTF8;
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if (data.flags & IDENTIFY_256COLOURS)
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c->tty.term_flags |= TERM_256COLOURS;
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else if (data.flags & IDENTIFY_88COLOURS)
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c->tty.term_flags |= TERM_88COLOURS;
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if (data.flags & IDENTIFY_HASDEFAULTS)
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c->tty.term_flags |= TERM_HASDEFAULTS;
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xfree(term);
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c->flags |= CLIENT_TERMINAL;
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return (0);
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}
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int
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server_msg_fn_resize(struct hdr *hdr, struct client *c)
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{
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struct msg_resize_data data;
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if (hdr->size != sizeof data)
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fatalx("bad MSG_RESIZE size");
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buffer_read(c->in, &data, sizeof data);
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log_debug("resize msg from client: %u,%u", data.sx, data.sy);
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c->tty.sx = data.sx;
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if (c->tty.sx == 0)
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c->tty.sx = 80;
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c->tty.sy = data.sy;
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if (c->tty.sy == 0)
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c->tty.sy = 25;
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c->tty.cx = UINT_MAX;
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c->tty.cy = UINT_MAX;
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c->tty.rupper = UINT_MAX;
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c->tty.rlower = UINT_MAX;
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recalculate_sizes();
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/* Always redraw this client. */
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server_redraw_client(c);
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return (0);
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}
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int
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server_msg_fn_exiting(struct hdr *hdr, struct client *c)
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{
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if (hdr->size != 0)
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fatalx("bad MSG_EXITING size");
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log_debug("exiting msg from client");
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c->session = NULL;
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tty_close(&c->tty, c->flags & CLIENT_SUSPENDED);
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server_write_client(c, MSG_EXITED, NULL, 0);
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return (0);
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}
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int
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server_msg_fn_unlock(struct hdr *hdr, struct client *c)
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{
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char *pass;
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if (hdr->size == 0)
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fatalx("bad MSG_UNLOCK size");
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pass = cmd_recv_string(c->in);
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log_debug("unlock msg from client");
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if (server_unlock(pass) != 0) {
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#define MSG "bad password"
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server_write_client(c, MSG_ERROR, MSG, (sizeof MSG) - 1);
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server_write_client(c, MSG_EXIT, NULL, 0);
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return (0);
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#undef MSG
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}
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server_write_client(c, MSG_EXIT, NULL, 0);
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return (0);
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}
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int
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server_msg_fn_wakeup(struct hdr *hdr, struct client *c)
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{
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if (hdr->size != 0)
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fatalx("bad MSG_WAKEUP size");
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log_debug("wakeup msg from client");
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c->flags &= ~CLIENT_SUSPENDED;
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tty_start_tty(&c->tty);
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server_redraw_client(c);
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return (0);
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}
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