1 /* $Id: cmd-new-session.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */ 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 21 #include <pwd.h> 22 #include <stdlib.h> 23 #include <string.h> 24 #include <termios.h> 25 #include <unistd.h> 26 27 #include "tmux.h" 28 29 /* 30 * Create a new session and attach to the current terminal unless -d is given. 31 */ 32 33 int cmd_new_session_check(struct args *); 34 int cmd_new_session_exec(struct cmd *, struct cmd_ctx *); 35 36 const struct cmd_entry cmd_new_session_entry = { 37 "new-session", "new", 38 "dn:s:t:x:y:", 0, 1, 39 "[-d] [-n window-name] [-s session-name] [-t target-session] " 40 "[-x width] [-y height] [command]", 41 CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON, 42 NULL, 43 cmd_new_session_check, 44 cmd_new_session_exec 45 }; 46 47 int 48 cmd_new_session_check(struct args *args) 49 { 50 if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) 51 return (-1); 52 return (0); 53 } 54 55 int 56 cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx) 57 { 58 struct args *args = self->args; 59 struct session *s, *old_s, *groupwith; 60 struct window *w; 61 struct window_pane *wp; 62 struct environ env; 63 struct termios tio, *tiop; 64 struct passwd *pw; 65 const char *newname, *target, *update, *cwd, *errstr; 66 char *overrides, *cmd, *cause; 67 int detached, idx; 68 u_int sx, sy, i; 69 70 newname = args_get(args, 's'); 71 if (newname != NULL) { 72 if (!session_check_name(newname)) { 73 ctx->error(ctx, "bad session name: %s", newname); 74 return (-1); 75 } 76 if (session_find(newname) != NULL) { 77 ctx->error(ctx, "duplicate session: %s", newname); 78 return (-1); 79 } 80 } 81 82 target = args_get(args, 't'); 83 if (target != NULL) { 84 groupwith = cmd_find_session(ctx, target, 0); 85 if (groupwith == NULL) 86 return (-1); 87 } else 88 groupwith = NULL; 89 90 /* 91 * There are three cases: 92 * 93 * 1. If cmdclient is non-NULL, new-session has been called from the 94 * command-line - cmdclient is to become a new attached, interactive 95 * client. Unless -d is given, the terminal must be opened and then 96 * the client sent MSG_READY. 97 * 98 * 2. If cmdclient is NULL, new-session has been called from an 99 * existing client (such as a key binding). 100 * 101 * 3. Both are NULL, the command was in the configuration file. Treat 102 * this as if -d was given even if it was not. 103 * 104 * In all cases, a new additional session needs to be created and 105 * (unless -d) set as the current session for the client. 106 */ 107 108 /* Set -d if no client. */ 109 detached = args_has(args, 'd'); 110 if (ctx->cmdclient == NULL && ctx->curclient == NULL) 111 detached = 1; 112 113 /* 114 * Save the termios settings, part of which is used for new windows in 115 * this session. 116 * 117 * This is read again with tcgetattr() rather than using tty.tio as if 118 * detached, tty_open won't be called. Because of this, it must be done 119 * before opening the terminal as that calls tcsetattr() to prepare for 120 * tmux taking over. 121 */ 122 if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) { 123 if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0) 124 fatal("tcgetattr failed"); 125 tiop = &tio; 126 } else 127 tiop = NULL; 128 129 /* Open the terminal if necessary. */ 130 if (!detached && ctx->cmdclient != NULL) { 131 if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) { 132 ctx->error(ctx, "not a terminal"); 133 return (-1); 134 } 135 136 overrides = 137 options_get_string(&global_s_options, "terminal-overrides"); 138 if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) { 139 ctx->error(ctx, "open terminal failed: %s", cause); 140 xfree(cause); 141 return (-1); 142 } 143 } 144 145 /* Get the new session working directory. */ 146 if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL) 147 cwd = ctx->cmdclient->cwd; 148 else { 149 pw = getpwuid(getuid()); 150 if (pw->pw_dir != NULL && *pw->pw_dir != '\0') 151 cwd = pw->pw_dir; 152 else 153 cwd = "/"; 154 } 155 156 /* Find new session size. */ 157 if (detached) { 158 sx = 80; 159 sy = 24; 160 if (args_has(args, 'x')) { 161 sx = strtonum( 162 args_get(args, 'x'), 1, USHRT_MAX, &errstr); 163 if (errstr != NULL) { 164 ctx->error(ctx, "width %s", errstr); 165 return (-1); 166 } 167 } 168 if (args_has(args, 'y')) { 169 sy = strtonum( 170 args_get(args, 'y'), 1, USHRT_MAX, &errstr); 171 if (errstr != NULL) { 172 ctx->error(ctx, "height %s", errstr); 173 return (-1); 174 } 175 } 176 } else if (ctx->cmdclient != NULL) { 177 sx = ctx->cmdclient->tty.sx; 178 sy = ctx->cmdclient->tty.sy; 179 } else { 180 sx = ctx->curclient->tty.sx; 181 sy = ctx->curclient->tty.sy; 182 } 183 if (sy > 0 && options_get_number(&global_s_options, "status")) 184 sy--; 185 if (sx == 0) 186 sx = 1; 187 if (sy == 0) 188 sy = 1; 189 190 /* Figure out the command for the new window. */ 191 if (target != NULL) 192 cmd = NULL; 193 else if (args->argc != 0) 194 cmd = args->argv[0]; 195 else 196 cmd = options_get_string(&global_s_options, "default-command"); 197 198 /* Construct the environment. */ 199 environ_init(&env); 200 update = options_get_string(&global_s_options, "update-environment"); 201 if (ctx->cmdclient != NULL) 202 environ_update(update, &ctx->cmdclient->environ, &env); 203 204 /* Create the new session. */ 205 idx = -1 - options_get_number(&global_s_options, "base-index"); 206 s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause); 207 if (s == NULL) { 208 ctx->error(ctx, "create session failed: %s", cause); 209 xfree(cause); 210 return (-1); 211 } 212 environ_free(&env); 213 214 /* Set the initial window name if one given. */ 215 if (cmd != NULL && args_has(args, 'n')) { 216 w = s->curw->window; 217 218 xfree(w->name); 219 w->name = xstrdup(args_get(args, 'n')); 220 221 options_set_number(&w->options, "automatic-rename", 0); 222 } 223 224 /* 225 * If a target session is given, this is to be part of a session group, 226 * so add it to the group and synchronize. 227 */ 228 if (groupwith != NULL) { 229 session_group_add(groupwith, s); 230 session_group_synchronize_to(s); 231 session_select(s, RB_ROOT(&s->windows)->idx); 232 } 233 234 /* 235 * Set the client to the new session. If a command client exists, it is 236 * taking this session and needs to get MSG_READY and stay around. 237 */ 238 if (!detached) { 239 if (ctx->cmdclient != NULL) { 240 server_write_client(ctx->cmdclient, MSG_READY, NULL, 0); 241 242 old_s = ctx->cmdclient->session; 243 if (old_s != NULL) 244 ctx->cmdclient->last_session = old_s; 245 ctx->cmdclient->session = s; 246 session_update_activity(s); 247 server_redraw_client(ctx->cmdclient); 248 } else { 249 old_s = ctx->curclient->session; 250 if (old_s != NULL) 251 ctx->curclient->last_session = old_s; 252 ctx->curclient->session = s; 253 session_update_activity(s); 254 server_redraw_client(ctx->curclient); 255 } 256 } 257 recalculate_sizes(); 258 server_update_socket(); 259 260 /* 261 * If there are still configuration file errors to display, put the new 262 * session's current window into more mode and display them now. 263 */ 264 if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) { 265 wp = s->curw->window->active; 266 window_pane_set_mode(wp, &window_copy_mode); 267 window_copy_init_for_output(wp); 268 for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) { 269 cause = ARRAY_ITEM(&cfg_causes, i); 270 window_copy_add(wp, "%s", cause); 271 xfree(cause); 272 } 273 ARRAY_FREE(&cfg_causes); 274 } 275 276 return (!detached); /* 1 means don't tell command client to exit */ 277 } 278