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Annotation of src/usr.bin/tmux/cmd-attach-session.c, Revision 1.25

1.25    ! nicm        1: /* $OpenBSD: cmd-attach-session.c,v 1.24 2013/03/24 09:58:40 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
                      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:
1.21      nicm       21: #include <stdlib.h>
                     22:
1.1       nicm       23: #include "tmux.h"
                     24:
                     25: /*
                     26:  * Attach existing session to the current terminal.
                     27:  */
                     28:
1.23      nicm       29: enum cmd_retval        cmd_attach_session_exec(struct cmd *, struct cmd_q *);
1.1       nicm       30:
                     31: const struct cmd_entry cmd_attach_session_entry = {
                     32:        "attach-session", "attach",
1.15      nicm       33:        "drt:", 0, 0,
1.12      nicm       34:        "[-dr] " CMD_TARGET_SESSION_USAGE,
1.15      nicm       35:        CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON,
                     36:        NULL,
                     37:        cmd_attach_session_exec
1.1       nicm       38: };
                     39:
1.22      nicm       40: enum cmd_retval
1.24      nicm       41: cmd_attach_session(struct cmd_q *cmdq, const char* tflag, int dflag, int rflag)
1.1       nicm       42: {
1.15      nicm       43:        struct session  *s;
                     44:        struct client   *c;
                     45:        const char      *update;
1.19      nicm       46:        char            *cause;
1.15      nicm       47:        u_int            i;
1.1       nicm       48:
1.13      nicm       49:        if (RB_EMPTY(&sessions)) {
1.23      nicm       50:                cmdq_error(cmdq, "no sessions");
1.22      nicm       51:                return (CMD_RETURN_ERROR);
1.1       nicm       52:        }
1.15      nicm       53:
1.24      nicm       54:        if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
1.22      nicm       55:                return (CMD_RETURN_ERROR);
1.5       nicm       56:
1.23      nicm       57:        if (cmdq->client == NULL)
1.22      nicm       58:                return (CMD_RETURN_NORMAL);
1.1       nicm       59:
1.23      nicm       60:        if (cmdq->client->session != NULL) {
1.24      nicm       61:                if (dflag) {
1.11      nicm       62:                        /*
1.4       nicm       63:                         * Can't use server_write_session in case attaching to
                     64:                         * the same session as currently attached to.
                     65:                         */
                     66:                        for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
                     67:                                c = ARRAY_ITEM(&clients, i);
                     68:                                if (c == NULL || c->session != s)
                     69:                                        continue;
1.23      nicm       70:                                if (c == cmdq->client)
1.4       nicm       71:                                        continue;
                     72:                                server_write_client(c, MSG_DETACH, NULL, 0);
                     73:                        }
                     74:                }
1.11      nicm       75:
1.23      nicm       76:                cmdq->client->session = s;
                     77:                notify_attached_session_changed(cmdq->client);
1.14      nicm       78:                session_update_activity(s);
1.23      nicm       79:                server_redraw_client(cmdq->client);
1.17      nicm       80:                s->curw->flags &= ~WINLINK_ALERTFLAGS;
1.4       nicm       81:        } else {
1.23      nicm       82:                if (server_client_open(cmdq->client, s, &cause) != 0) {
                     83:                        cmdq_error(cmdq, "open terminal failed: %s", cause);
1.21      nicm       84:                        free(cause);
1.22      nicm       85:                        return (CMD_RETURN_ERROR);
1.4       nicm       86:                }
1.12      nicm       87:
1.24      nicm       88:                if (rflag)
1.23      nicm       89:                        cmdq->client->flags |= CLIENT_READONLY;
1.4       nicm       90:
1.24      nicm       91:                if (dflag)
1.4       nicm       92:                        server_write_session(s, MSG_DETACH, NULL, 0);
                     93:
1.8       nicm       94:                update = options_get_string(&s->options, "update-environment");
1.23      nicm       95:                environ_update(update, &cmdq->client->environ, &s->environ);
1.8       nicm       96:
1.23      nicm       97:                cmdq->client->session = s;
                     98:                notify_attached_session_changed(cmdq->client);
                     99:                session_update_activity(s);
                    100:                server_redraw_client(cmdq->client);
1.17      nicm      101:                s->curw->flags &= ~WINLINK_ALERTFLAGS;
1.23      nicm      102:
                    103:                server_write_ready(cmdq->client);
                    104:                cmdq->client_exit = 0;
1.1       nicm      105:        }
                    106:        recalculate_sizes();
1.9       nicm      107:        server_update_socket();
1.1       nicm      108:
1.23      nicm      109:        return (CMD_RETURN_NORMAL);
1.24      nicm      110: }
                    111:
                    112: enum cmd_retval
                    113: cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
                    114: {
                    115:        struct args     *args = self->args;
                    116:
                    117:        return (cmd_attach_session(cmdq, args_get(args, 't'),
                    118:            args_has(args, 'd'), args_has(args, 'r')));
1.1       nicm      119: }