Annotation of src/usr.bin/tmux/cmd-attach-session.c, Revision 1.89
1.89 ! nicm 1: /* $OpenBSD: cmd-attach-session.c,v 1.88 2022/05/30 12:48:57 nicm Exp $ */
1.1 nicm 2:
3: /*
1.61 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.27 nicm 21: #include <errno.h>
22: #include <fcntl.h>
1.21 nicm 23: #include <stdlib.h>
1.27 nicm 24: #include <string.h>
25: #include <unistd.h>
1.21 nicm 26:
1.1 nicm 27: #include "tmux.h"
28:
29: /*
30: * Attach existing session to the current terminal.
31: */
32:
1.64 nicm 33: static enum cmd_retval cmd_attach_session_exec(struct cmd *,
34: struct cmdq_item *);
1.1 nicm 35:
36: const struct cmd_entry cmd_attach_session_entry = {
1.56 nicm 37: .name = "attach-session",
38: .alias = "attach",
39:
1.87 nicm 40: .args = { "c:dEf:rt:x", 0, 0, NULL },
1.84 nicm 41: .usage = "[-dErx] [-c working-directory] [-f flags] "
42: CMD_TARGET_SESSION_USAGE,
1.56 nicm 43:
1.73 nicm 44: /* -t is special */
1.57 nicm 45:
1.88 nicm 46: .flags = CMD_STARTSERVER|CMD_READONLY,
1.56 nicm 47: .exec = cmd_attach_session_exec
1.1 nicm 48: };
49:
1.22 nicm 50: enum cmd_retval
1.73 nicm 51: cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
1.84 nicm 52: int xflag, int rflag, const char *cflag, int Eflag, const char *fflag)
1.1 nicm 53: {
1.83 nicm 54: struct cmd_find_state *current = cmdq_get_current(item);
1.81 nicm 55: struct cmd_find_state target;
1.73 nicm 56: enum cmd_find_type type;
57: int flags;
1.81 nicm 58: struct client *c = cmdq_get_client(item), *c_loop;
1.73 nicm 59: struct session *s;
60: struct winlink *wl;
61: struct window_pane *wp;
1.85 nicm 62: char *cwd, *cause;
1.78 nicm 63: enum msgtype msgtype;
1.1 nicm 64:
1.13 nicm 65: if (RB_EMPTY(&sessions)) {
1.64 nicm 66: cmdq_error(item, "no sessions");
1.22 nicm 67: return (CMD_RETURN_ERROR);
1.1 nicm 68: }
1.15 nicm 69:
1.36 nicm 70: if (c == NULL)
1.22 nicm 71: return (CMD_RETURN_NORMAL);
1.88 nicm 72:
1.36 nicm 73: if (server_client_check_nested(c)) {
1.64 nicm 74: cmdq_error(item, "sessions should be nested with care, "
1.35 nicm 75: "unset $TMUX to force");
76: return (CMD_RETURN_ERROR);
77: }
1.29 nicm 78:
1.73 nicm 79: if (tflag != NULL && tflag[strcspn(tflag, ":.")] != '\0') {
80: type = CMD_FIND_PANE;
81: flags = 0;
82: } else {
83: type = CMD_FIND_SESSION;
84: flags = CMD_FIND_PREFER_UNATTACHED;
85: }
1.81 nicm 86: if (cmd_find_target(&target, item, tflag, type, flags) != 0)
1.73 nicm 87: return (CMD_RETURN_ERROR);
1.81 nicm 88: s = target.s;
89: wl = target.wl;
90: wp = target.wp;
1.73 nicm 91:
1.29 nicm 92: if (wl != NULL) {
93: if (wp != NULL)
1.77 nicm 94: window_set_active_pane(wp->window, wp, 1);
1.29 nicm 95: session_set_current(s, wl);
1.72 nicm 96: if (wp != NULL)
1.74 nicm 97: cmd_find_from_winlink_pane(current, wl, wp, 0);
1.72 nicm 98: else
1.74 nicm 99: cmd_find_from_winlink(current, wl, 0);
1.29 nicm 100: }
1.1 nicm 101:
1.42 nicm 102: if (cflag != NULL) {
1.85 nicm 103: cwd = format_single(item, cflag, c, s, wl, wp);
1.46 nicm 104: free((void *)s->cwd);
1.85 nicm 105: s->cwd = cwd;
1.42 nicm 106: }
1.84 nicm 107: if (fflag)
108: server_client_set_flags(c, fflag);
109: if (rflag)
110: c->flags |= (CLIENT_READONLY|CLIENT_IGNORESIZE);
1.42 nicm 111:
1.75 nicm 112: c->last_session = c->session;
1.36 nicm 113: if (c->session != NULL) {
1.78 nicm 114: if (dflag || xflag) {
115: if (xflag)
116: msgtype = MSG_DETACHKILL;
117: else
118: msgtype = MSG_DETACH;
1.36 nicm 119: TAILQ_FOREACH(c_loop, &clients, entry) {
1.37 nicm 120: if (c_loop->session != s || c == c_loop)
1.4 nicm 121: continue;
1.78 nicm 122: server_client_detach(c_loop, msgtype);
1.4 nicm 123: }
124: }
1.66 nicm 125: if (!Eflag)
126: environ_update(s->options, c->environ, s->environ);
1.27 nicm 127:
1.86 nicm 128: server_client_set_session(c, s);
1.83 nicm 129: if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
1.69 nicm 130: server_client_set_key_table(c, NULL);
1.4 nicm 131: } else {
1.36 nicm 132: if (server_client_open(c, &cause) != 0) {
1.64 nicm 133: cmdq_error(item, "open terminal failed: %s", cause);
1.21 nicm 134: free(cause);
1.22 nicm 135: return (CMD_RETURN_ERROR);
1.27 nicm 136: }
1.4 nicm 137:
1.78 nicm 138: if (dflag || xflag) {
139: if (xflag)
140: msgtype = MSG_DETACHKILL;
141: else
142: msgtype = MSG_DETACH;
1.43 nicm 143: TAILQ_FOREACH(c_loop, &clients, entry) {
144: if (c_loop->session != s || c == c_loop)
145: continue;
1.78 nicm 146: server_client_detach(c_loop, msgtype);
1.43 nicm 147: }
1.28 nicm 148: }
1.66 nicm 149: if (!Eflag)
150: environ_update(s->options, c->environ, s->environ);
1.8 nicm 151:
1.86 nicm 152: server_client_set_session(c, s);
1.54 nicm 153: server_client_set_key_table(c, NULL);
1.23 nicm 154:
1.43 nicm 155: if (~c->flags & CLIENT_CONTROL)
156: proc_send(c->peer, MSG_READY, -1, NULL, 0);
1.65 nicm 157: notify_client("client-attached", c);
1.63 nicm 158: c->flags |= CLIENT_ATTACHED;
1.1 nicm 159: }
1.89 ! nicm 160:
! 161: if (cfg_finished)
! 162: cfg_show_causes(s);
1.1 nicm 163:
1.23 nicm 164: return (CMD_RETURN_NORMAL);
1.24 nicm 165: }
166:
1.62 nicm 167: static enum cmd_retval
1.64 nicm 168: cmd_attach_session_exec(struct cmd *self, struct cmdq_item *item)
1.24 nicm 169: {
1.80 nicm 170: struct args *args = cmd_get_args(self);
1.24 nicm 171:
1.73 nicm 172: return (cmd_attach_session(item, args_get(args, 't'),
1.78 nicm 173: args_has(args, 'd'), args_has(args, 'x'), args_has(args, 'r'),
1.84 nicm 174: args_get(args, 'c'), args_has(args, 'E'), args_get(args, 'f')));
1.1 nicm 175: }
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