1 /* $OpenBSD: cmd-find.c,v 1.68 2018/08/18 20:08:52 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Nicholas Marriott <nicholas.marriott@gmail.com> 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 <fnmatch.h> 22 #include <limits.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <paths.h> 26 #include <unistd.h> 27 28 #include "tmux.h" 29 30 static int cmd_find_session_better(struct session *, struct session *, 31 int); 32 static struct session *cmd_find_best_session(struct session **, u_int, int); 33 static int cmd_find_best_session_with_window(struct cmd_find_state *); 34 static int cmd_find_best_winlink_with_window(struct cmd_find_state *); 35 36 static const char *cmd_find_map_table(const char *[][2], const char *); 37 38 static void cmd_find_log_state(const char *, struct cmd_find_state *); 39 static int cmd_find_get_session(struct cmd_find_state *, const char *); 40 static int cmd_find_get_window(struct cmd_find_state *, const char *, int); 41 static int cmd_find_get_window_with_session(struct cmd_find_state *, 42 const char *); 43 static int cmd_find_get_pane(struct cmd_find_state *, const char *, int); 44 static int cmd_find_get_pane_with_session(struct cmd_find_state *, 45 const char *); 46 static int cmd_find_get_pane_with_window(struct cmd_find_state *, 47 const char *); 48 49 static const char *cmd_find_session_table[][2] = { 50 { NULL, NULL } 51 }; 52 static const char *cmd_find_window_table[][2] = { 53 { "{start}", "^" }, 54 { "{last}", "!" }, 55 { "{end}", "$" }, 56 { "{next}", "+" }, 57 { "{previous}", "-" }, 58 { NULL, NULL } 59 }; 60 static const char *cmd_find_pane_table[][2] = { 61 { "{last}", "!" }, 62 { "{next}", "+" }, 63 { "{previous}", "-" }, 64 { "{top}", "top" }, 65 { "{bottom}", "bottom" }, 66 { "{left}", "left" }, 67 { "{right}", "right" }, 68 { "{top-left}", "top-left" }, 69 { "{top-right}", "top-right" }, 70 { "{bottom-left}", "bottom-left" }, 71 { "{bottom-right}", "bottom-right" }, 72 { "{up-of}", "{up-of}" }, 73 { "{down-of}", "{down-of}" }, 74 { "{left-of}", "{left-of}" }, 75 { "{right-of}", "{right-of}" }, 76 { NULL, NULL } 77 }; 78 79 /* Get session from TMUX if present. */ 80 static struct session * 81 cmd_find_try_TMUX(struct client *c) 82 { 83 struct environ_entry *envent; 84 char tmp[256]; 85 long long pid; 86 u_int session; 87 struct session *s; 88 89 envent = environ_find(c->environ, "TMUX"); 90 if (envent == NULL) 91 return (NULL); 92 93 if (sscanf(envent->value, "%255[^,],%lld,%d", tmp, &pid, &session) != 3) 94 return (NULL); 95 if (pid != getpid()) 96 return (NULL); 97 log_debug("%s: client %p TMUX %s (session $%u)", __func__, c, 98 envent->value, session); 99 100 s = session_find_by_id(session); 101 if (s != NULL) 102 log_debug("%s: session $%u still exists", __func__, s->id); 103 return (s); 104 } 105 106 /* Find pane containing client if any. */ 107 static struct window_pane * 108 cmd_find_inside_pane(struct client *c) 109 { 110 struct window_pane *wp; 111 112 if (c == NULL) 113 return (NULL); 114 115 RB_FOREACH(wp, window_pane_tree, &all_window_panes) { 116 if (wp->fd != -1 && strcmp(wp->tty, c->ttyname) == 0) 117 break; 118 } 119 if (wp != NULL) 120 log_debug("%s: got pane %%%u (%s)", __func__, wp->id, wp->tty); 121 return (wp); 122 } 123 124 /* Is this client better? */ 125 static int 126 cmd_find_client_better(struct client *c, struct client *than) 127 { 128 if (than == NULL) 129 return (1); 130 return (timercmp(&c->activity_time, &than->activity_time, >)); 131 } 132 133 /* Find best client for session. */ 134 struct client * 135 cmd_find_best_client(struct session *s) 136 { 137 struct client *c_loop, *c; 138 139 if (s->attached == 0) 140 s = NULL; 141 142 c = NULL; 143 TAILQ_FOREACH(c_loop, &clients, entry) { 144 if (c_loop->session == NULL) 145 continue; 146 if (s != NULL && c_loop->session != s) 147 continue; 148 if (cmd_find_client_better(c_loop, c)) 149 c = c_loop; 150 } 151 return (c); 152 } 153 154 /* Is this session better? */ 155 static int 156 cmd_find_session_better(struct session *s, struct session *than, int flags) 157 { 158 int attached; 159 160 if (than == NULL) 161 return (1); 162 if (flags & CMD_FIND_PREFER_UNATTACHED) { 163 attached = (than->attached != 0); 164 if (attached && s->attached == 0) 165 return (1); 166 else if (!attached && s->attached != 0) 167 return (0); 168 } 169 return (timercmp(&s->activity_time, &than->activity_time, >)); 170 } 171 172 /* Find best session from a list, or all if list is NULL. */ 173 static struct session * 174 cmd_find_best_session(struct session **slist, u_int ssize, int flags) 175 { 176 struct session *s_loop, *s; 177 u_int i; 178 179 log_debug("%s: %u sessions to try", __func__, ssize); 180 181 s = NULL; 182 if (slist != NULL) { 183 for (i = 0; i < ssize; i++) { 184 if (cmd_find_session_better(slist[i], s, flags)) 185 s = slist[i]; 186 } 187 } else { 188 RB_FOREACH(s_loop, sessions, &sessions) { 189 if (cmd_find_session_better(s_loop, s, flags)) 190 s = s_loop; 191 } 192 } 193 return (s); 194 } 195 196 /* Find best session and winlink for window. */ 197 static int 198 cmd_find_best_session_with_window(struct cmd_find_state *fs) 199 { 200 struct session **slist = NULL; 201 u_int ssize; 202 struct session *s; 203 204 log_debug("%s: window is @%u", __func__, fs->w->id); 205 206 ssize = 0; 207 RB_FOREACH(s, sessions, &sessions) { 208 if (!session_has(s, fs->w)) 209 continue; 210 slist = xreallocarray(slist, ssize + 1, sizeof *slist); 211 slist[ssize++] = s; 212 } 213 if (ssize == 0) 214 goto fail; 215 fs->s = cmd_find_best_session(slist, ssize, fs->flags); 216 if (fs->s == NULL) 217 goto fail; 218 free(slist); 219 return (cmd_find_best_winlink_with_window(fs)); 220 221 fail: 222 free(slist); 223 return (-1); 224 } 225 226 /* 227 * Find the best winlink for a window (the current if it contains the window, 228 * otherwise the first). 229 */ 230 static int 231 cmd_find_best_winlink_with_window(struct cmd_find_state *fs) 232 { 233 struct winlink *wl, *wl_loop; 234 235 log_debug("%s: window is @%u", __func__, fs->w->id); 236 237 wl = NULL; 238 if (fs->s->curw != NULL && fs->s->curw->window == fs->w) 239 wl = fs->s->curw; 240 else { 241 RB_FOREACH(wl_loop, winlinks, &fs->s->windows) { 242 if (wl_loop->window == fs->w) { 243 wl = wl_loop; 244 break; 245 } 246 } 247 } 248 if (wl == NULL) 249 return (-1); 250 fs->wl = wl; 251 fs->idx = fs->wl->idx; 252 return (0); 253 } 254 255 /* Maps string in table. */ 256 static const char * 257 cmd_find_map_table(const char *table[][2], const char *s) 258 { 259 u_int i; 260 261 for (i = 0; table[i][0] != NULL; i++) { 262 if (strcmp(s, table[i][0]) == 0) 263 return (table[i][1]); 264 } 265 return (s); 266 } 267 268 /* Find session from string. Fills in s. */ 269 static int 270 cmd_find_get_session(struct cmd_find_state *fs, const char *session) 271 { 272 struct session *s, *s_loop; 273 struct client *c; 274 275 log_debug("%s: %s", __func__, session); 276 277 /* Check for session ids starting with $. */ 278 if (*session == '$') { 279 fs->s = session_find_by_id_str(session); 280 if (fs->s == NULL) 281 return (-1); 282 return (0); 283 } 284 285 /* Look for exactly this session. */ 286 fs->s = session_find(session); 287 if (fs->s != NULL) 288 return (0); 289 290 /* Look for as a client. */ 291 c = cmd_find_client(NULL, session, 1); 292 if (c != NULL && c->session != NULL) { 293 fs->s = c->session; 294 return (0); 295 } 296 297 /* Stop now if exact only. */ 298 if (fs->flags & CMD_FIND_EXACT_SESSION) 299 return (-1); 300 301 /* Otherwise look for prefix. */ 302 s = NULL; 303 RB_FOREACH(s_loop, sessions, &sessions) { 304 if (strncmp(session, s_loop->name, strlen(session)) == 0) { 305 if (s != NULL) 306 return (-1); 307 s = s_loop; 308 } 309 } 310 if (s != NULL) { 311 fs->s = s; 312 return (0); 313 } 314 315 /* Then as a pattern. */ 316 s = NULL; 317 RB_FOREACH(s_loop, sessions, &sessions) { 318 if (fnmatch(session, s_loop->name, 0) == 0) { 319 if (s != NULL) 320 return (-1); 321 s = s_loop; 322 } 323 } 324 if (s != NULL) { 325 fs->s = s; 326 return (0); 327 } 328 329 return (-1); 330 } 331 332 /* Find window from string. Fills in s, wl, w. */ 333 static int 334 cmd_find_get_window(struct cmd_find_state *fs, const char *window, int only) 335 { 336 log_debug("%s: %s", __func__, window); 337 338 /* Check for window ids starting with @. */ 339 if (*window == '@') { 340 fs->w = window_find_by_id_str(window); 341 if (fs->w == NULL) 342 return (-1); 343 return (cmd_find_best_session_with_window(fs)); 344 } 345 346 /* Not a window id, so use the current session. */ 347 fs->s = fs->current->s; 348 349 /* We now only need to find the winlink in this session. */ 350 if (cmd_find_get_window_with_session(fs, window) == 0) 351 return (0); 352 353 /* Otherwise try as a session itself. */ 354 if (!only && cmd_find_get_session(fs, window) == 0) { 355 fs->wl = fs->s->curw; 356 fs->w = fs->wl->window; 357 if (~fs->flags & CMD_FIND_WINDOW_INDEX) 358 fs->idx = fs->wl->idx; 359 return (0); 360 } 361 362 return (-1); 363 } 364 365 /* 366 * Find window from string, assuming it is in given session. Needs s, fills in 367 * wl and w. 368 */ 369 static int 370 cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window) 371 { 372 struct winlink *wl; 373 const char *errstr; 374 int idx, n, exact; 375 struct session *s; 376 377 log_debug("%s: %s", __func__, window); 378 exact = (fs->flags & CMD_FIND_EXACT_WINDOW); 379 380 /* 381 * Start with the current window as the default. So if only an index is 382 * found, the window will be the current. 383 */ 384 fs->wl = fs->s->curw; 385 fs->w = fs->wl->window; 386 387 /* Check for window ids starting with @. */ 388 if (*window == '@') { 389 fs->w = window_find_by_id_str(window); 390 if (fs->w == NULL || !session_has(fs->s, fs->w)) 391 return (-1); 392 return (cmd_find_best_winlink_with_window(fs)); 393 } 394 395 /* Try as an offset. */ 396 if (!exact && (window[0] == '+' || window[0] == '-')) { 397 if (window[1] != '\0') 398 n = strtonum(window + 1, 1, INT_MAX, NULL); 399 else 400 n = 1; 401 s = fs->s; 402 if (fs->flags & CMD_FIND_WINDOW_INDEX) { 403 if (window[0] == '+') { 404 if (INT_MAX - s->curw->idx < n) 405 return (-1); 406 fs->idx = s->curw->idx + n; 407 } else { 408 if (n > s->curw->idx) 409 return (-1); 410 fs->idx = s->curw->idx - n; 411 } 412 return (0); 413 } 414 if (window[0] == '+') 415 fs->wl = winlink_next_by_number(s->curw, s, n); 416 else 417 fs->wl = winlink_previous_by_number(s->curw, s, n); 418 if (fs->wl != NULL) { 419 fs->idx = fs->wl->idx; 420 fs->w = fs->wl->window; 421 return (0); 422 } 423 } 424 425 /* Try special characters. */ 426 if (!exact) { 427 if (strcmp(window, "!") == 0) { 428 fs->wl = TAILQ_FIRST(&fs->s->lastw); 429 if (fs->wl == NULL) 430 return (-1); 431 fs->idx = fs->wl->idx; 432 fs->w = fs->wl->window; 433 return (0); 434 } else if (strcmp(window, "^") == 0) { 435 fs->wl = RB_MIN(winlinks, &fs->s->windows); 436 if (fs->wl == NULL) 437 return (-1); 438 fs->idx = fs->wl->idx; 439 fs->w = fs->wl->window; 440 return (0); 441 } else if (strcmp(window, "$") == 0) { 442 fs->wl = RB_MAX(winlinks, &fs->s->windows); 443 if (fs->wl == NULL) 444 return (-1); 445 fs->idx = fs->wl->idx; 446 fs->w = fs->wl->window; 447 return (0); 448 } 449 } 450 451 /* First see if this is a valid window index in this session. */ 452 if (window[0] != '+' && window[0] != '-') { 453 idx = strtonum(window, 0, INT_MAX, &errstr); 454 if (errstr == NULL) { 455 fs->wl = winlink_find_by_index(&fs->s->windows, idx); 456 if (fs->wl != NULL) { 457 fs->w = fs->wl->window; 458 return (0); 459 } 460 if (fs->flags & CMD_FIND_WINDOW_INDEX) { 461 fs->idx = idx; 462 return (0); 463 } 464 } 465 } 466 467 /* Look for exact matches, error if more than one. */ 468 fs->wl = NULL; 469 RB_FOREACH(wl, winlinks, &fs->s->windows) { 470 if (strcmp(window, wl->window->name) == 0) { 471 if (fs->wl != NULL) 472 return (-1); 473 fs->wl = wl; 474 } 475 } 476 if (fs->wl != NULL) { 477 fs->idx = fs->wl->idx; 478 fs->w = fs->wl->window; 479 return (0); 480 } 481 482 /* Stop now if exact only. */ 483 if (exact) 484 return (-1); 485 486 /* Try as the start of a window name, error if multiple. */ 487 fs->wl = NULL; 488 RB_FOREACH(wl, winlinks, &fs->s->windows) { 489 if (strncmp(window, wl->window->name, strlen(window)) == 0) { 490 if (fs->wl != NULL) 491 return (-1); 492 fs->wl = wl; 493 } 494 } 495 if (fs->wl != NULL) { 496 fs->idx = fs->wl->idx; 497 fs->w = fs->wl->window; 498 return (0); 499 } 500 501 /* Now look for pattern matches, again error if multiple. */ 502 fs->wl = NULL; 503 RB_FOREACH(wl, winlinks, &fs->s->windows) { 504 if (fnmatch(window, wl->window->name, 0) == 0) { 505 if (fs->wl != NULL) 506 return (-1); 507 fs->wl = wl; 508 } 509 } 510 if (fs->wl != NULL) { 511 fs->idx = fs->wl->idx; 512 fs->w = fs->wl->window; 513 return (0); 514 } 515 516 return (-1); 517 } 518 519 /* Find pane from string. Fills in s, wl, w, wp. */ 520 static int 521 cmd_find_get_pane(struct cmd_find_state *fs, const char *pane, int only) 522 { 523 log_debug("%s: %s", __func__, pane); 524 525 /* Check for pane ids starting with %. */ 526 if (*pane == '%') { 527 fs->wp = window_pane_find_by_id_str(pane); 528 if (fs->wp == NULL) 529 return (-1); 530 fs->w = fs->wp->window; 531 return (cmd_find_best_session_with_window(fs)); 532 } 533 534 /* Not a pane id, so try the current session and window. */ 535 fs->s = fs->current->s; 536 fs->wl = fs->current->wl; 537 fs->idx = fs->current->idx; 538 fs->w = fs->current->w; 539 540 /* We now only need to find the pane in this window. */ 541 if (cmd_find_get_pane_with_window(fs, pane) == 0) 542 return (0); 543 544 /* Otherwise try as a window itself (this will also try as session). */ 545 if (!only && cmd_find_get_window(fs, pane, 0) == 0) { 546 fs->wp = fs->w->active; 547 return (0); 548 } 549 550 return (-1); 551 } 552 553 /* 554 * Find pane from string, assuming it is in given session. Needs s, fills in wl 555 * and w and wp. 556 */ 557 static int 558 cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane) 559 { 560 log_debug("%s: %s", __func__, pane); 561 562 /* Check for pane ids starting with %. */ 563 if (*pane == '%') { 564 fs->wp = window_pane_find_by_id_str(pane); 565 if (fs->wp == NULL) 566 return (-1); 567 fs->w = fs->wp->window; 568 return (cmd_find_best_winlink_with_window(fs)); 569 } 570 571 /* Otherwise use the current window. */ 572 fs->wl = fs->s->curw; 573 fs->idx = fs->wl->idx; 574 fs->w = fs->wl->window; 575 576 /* Now we just need to look up the pane. */ 577 return (cmd_find_get_pane_with_window(fs, pane)); 578 } 579 580 /* 581 * Find pane from string, assuming it is in the given window. Needs w, fills in 582 * wp. 583 */ 584 static int 585 cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane) 586 { 587 const char *errstr; 588 int idx; 589 struct window_pane *wp; 590 u_int n; 591 592 log_debug("%s: %s", __func__, pane); 593 594 /* Check for pane ids starting with %. */ 595 if (*pane == '%') { 596 fs->wp = window_pane_find_by_id_str(pane); 597 if (fs->wp == NULL) 598 return (-1); 599 if (fs->wp->window != fs->w) 600 return (-1); 601 return (0); 602 } 603 604 /* Try special characters. */ 605 if (strcmp(pane, "!") == 0) { 606 fs->wp = fs->w->last; 607 if (fs->wp == NULL) 608 return (-1); 609 return (0); 610 } else if (strcmp(pane, "{up-of}") == 0) { 611 fs->wp = window_pane_find_up(fs->w->active); 612 if (fs->wp == NULL) 613 return (-1); 614 return (0); 615 } else if (strcmp(pane, "{down-of}") == 0) { 616 fs->wp = window_pane_find_down(fs->w->active); 617 if (fs->wp == NULL) 618 return (-1); 619 return (0); 620 } else if (strcmp(pane, "{left-of}") == 0) { 621 fs->wp = window_pane_find_left(fs->w->active); 622 if (fs->wp == NULL) 623 return (-1); 624 return (0); 625 } else if (strcmp(pane, "{right-of}") == 0) { 626 fs->wp = window_pane_find_right(fs->w->active); 627 if (fs->wp == NULL) 628 return (-1); 629 return (0); 630 } 631 632 /* Try as an offset. */ 633 if (pane[0] == '+' || pane[0] == '-') { 634 if (pane[1] != '\0') 635 n = strtonum(pane + 1, 1, INT_MAX, NULL); 636 else 637 n = 1; 638 wp = fs->w->active; 639 if (pane[0] == '+') 640 fs->wp = window_pane_next_by_number(fs->w, wp, n); 641 else 642 fs->wp = window_pane_previous_by_number(fs->w, wp, n); 643 if (fs->wp != NULL) 644 return (0); 645 } 646 647 /* Get pane by index. */ 648 idx = strtonum(pane, 0, INT_MAX, &errstr); 649 if (errstr == NULL) { 650 fs->wp = window_pane_at_index(fs->w, idx); 651 if (fs->wp != NULL) 652 return (0); 653 } 654 655 /* Try as a description. */ 656 fs->wp = window_find_string(fs->w, pane); 657 if (fs->wp != NULL) 658 return (0); 659 660 return (-1); 661 } 662 663 /* Clear state. */ 664 void 665 cmd_find_clear_state(struct cmd_find_state *fs, int flags) 666 { 667 memset(fs, 0, sizeof *fs); 668 669 fs->flags = flags; 670 671 fs->idx = -1; 672 } 673 674 /* Check if state is empty. */ 675 int 676 cmd_find_empty_state(struct cmd_find_state *fs) 677 { 678 if (fs->s == NULL && fs->wl == NULL && fs->w == NULL && fs->wp == NULL) 679 return (1); 680 return (0); 681 } 682 683 /* Check if a state if valid. */ 684 int 685 cmd_find_valid_state(struct cmd_find_state *fs) 686 { 687 struct winlink *wl; 688 689 if (fs->s == NULL || fs->wl == NULL || fs->w == NULL || fs->wp == NULL) 690 return (0); 691 692 if (!session_alive(fs->s)) 693 return (0); 694 695 RB_FOREACH(wl, winlinks, &fs->s->windows) { 696 if (wl->window == fs->w && wl == fs->wl) 697 break; 698 } 699 if (wl == NULL) 700 return (0); 701 702 if (fs->w != fs->wl->window) 703 return (0); 704 705 return (window_has_pane(fs->w, fs->wp)); 706 } 707 708 /* Copy a state. */ 709 void 710 cmd_find_copy_state(struct cmd_find_state *dst, struct cmd_find_state *src) 711 { 712 dst->s = src->s; 713 dst->wl = src->wl; 714 dst->idx = src->idx; 715 dst->w = src->w; 716 dst->wp = src->wp; 717 } 718 719 /* Log the result. */ 720 static void 721 cmd_find_log_state(const char *prefix, struct cmd_find_state *fs) 722 { 723 if (fs->s != NULL) 724 log_debug("%s: s=$%u %s", prefix, fs->s->id, fs->s->name); 725 else 726 log_debug("%s: s=none", prefix); 727 if (fs->wl != NULL) { 728 log_debug("%s: wl=%u %d w=@%u %s", prefix, fs->wl->idx, 729 fs->wl->window == fs->w, fs->w->id, fs->w->name); 730 } else 731 log_debug("%s: wl=none", prefix); 732 if (fs->wp != NULL) 733 log_debug("%s: wp=%%%u", prefix, fs->wp->id); 734 else 735 log_debug("%s: wp=none", prefix); 736 if (fs->idx != -1) 737 log_debug("%s: idx=%d", prefix, fs->idx); 738 else 739 log_debug("%s: idx=none", prefix); 740 } 741 742 /* Find state from a session. */ 743 void 744 cmd_find_from_session(struct cmd_find_state *fs, struct session *s, int flags) 745 { 746 cmd_find_clear_state(fs, flags); 747 748 fs->s = s; 749 fs->wl = fs->s->curw; 750 fs->w = fs->wl->window; 751 fs->wp = fs->w->active; 752 753 cmd_find_log_state(__func__, fs); 754 } 755 756 /* Find state from a winlink. */ 757 void 758 cmd_find_from_winlink(struct cmd_find_state *fs, struct winlink *wl, int flags) 759 { 760 cmd_find_clear_state(fs, flags); 761 762 fs->s = wl->session; 763 fs->wl = wl; 764 fs->w = wl->window; 765 fs->wp = wl->window->active; 766 767 cmd_find_log_state(__func__, fs); 768 } 769 770 /* Find state from a session and window. */ 771 int 772 cmd_find_from_session_window(struct cmd_find_state *fs, struct session *s, 773 struct window *w, int flags) 774 { 775 cmd_find_clear_state(fs, flags); 776 777 fs->s = s; 778 fs->w = w; 779 if (cmd_find_best_winlink_with_window(fs) != 0) { 780 cmd_find_clear_state(fs, flags); 781 return (-1); 782 } 783 fs->wp = fs->w->active; 784 785 cmd_find_log_state(__func__, fs); 786 return (0); 787 } 788 789 /* Find state from a window. */ 790 int 791 cmd_find_from_window(struct cmd_find_state *fs, struct window *w, int flags) 792 { 793 cmd_find_clear_state(fs, flags); 794 795 fs->w = w; 796 if (cmd_find_best_session_with_window(fs) != 0) { 797 cmd_find_clear_state(fs, flags); 798 return (-1); 799 } 800 if (cmd_find_best_winlink_with_window(fs) != 0) { 801 cmd_find_clear_state(fs, flags); 802 return (-1); 803 } 804 fs->wp = fs->w->active; 805 806 cmd_find_log_state(__func__, fs); 807 return (0); 808 } 809 810 /* Find state from a winlink and pane. */ 811 void 812 cmd_find_from_winlink_pane(struct cmd_find_state *fs, struct winlink *wl, 813 struct window_pane *wp, int flags) 814 { 815 cmd_find_clear_state(fs, flags); 816 817 fs->s = wl->session; 818 fs->wl = wl; 819 fs->idx = fs->wl->idx; 820 fs->w = fs->wl->window; 821 fs->wp = wp; 822 823 cmd_find_log_state(__func__, fs); 824 } 825 826 /* Find state from a pane. */ 827 int 828 cmd_find_from_pane(struct cmd_find_state *fs, struct window_pane *wp, int flags) 829 { 830 if (cmd_find_from_window(fs, wp->window, flags) != 0) 831 return (-1); 832 fs->wp = wp; 833 834 cmd_find_log_state(__func__, fs); 835 return (0); 836 } 837 838 /* Find state from nothing. */ 839 int 840 cmd_find_from_nothing(struct cmd_find_state *fs, int flags) 841 { 842 cmd_find_clear_state(fs, flags); 843 844 fs->s = cmd_find_best_session(NULL, 0, flags); 845 if (fs->s == NULL) { 846 cmd_find_clear_state(fs, flags); 847 return (-1); 848 } 849 fs->wl = fs->s->curw; 850 fs->idx = fs->wl->idx; 851 fs->w = fs->wl->window; 852 fs->wp = fs->w->active; 853 854 cmd_find_log_state(__func__, fs); 855 return (0); 856 } 857 858 /* Find state from mouse. */ 859 int 860 cmd_find_from_mouse(struct cmd_find_state *fs, struct mouse_event *m, int flags) 861 { 862 cmd_find_clear_state(fs, flags); 863 864 if (!m->valid) 865 return (-1); 866 867 fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl); 868 if (fs->wp == NULL) { 869 cmd_find_clear_state(fs, flags); 870 return (-1); 871 } 872 fs->w = fs->wl->window; 873 874 cmd_find_log_state(__func__, fs); 875 return (0); 876 } 877 878 /* Find state from client. */ 879 int 880 cmd_find_from_client(struct cmd_find_state *fs, struct client *c, int flags) 881 { 882 struct session *s; 883 struct winlink *wl; 884 struct window_pane *wp; 885 886 /* If no client, treat as from nothing. */ 887 if (c == NULL) 888 return (cmd_find_from_nothing(fs, flags)); 889 890 /* If this is an attached client, all done. */ 891 if (c->session != NULL) { 892 cmd_find_from_session(fs, c->session, flags); 893 return (0); 894 } 895 cmd_find_clear_state(fs, flags); 896 897 /* 898 * If this is an unattached client running in a pane, we can use that 899 * to limit the list of sessions to those containing that pane. 900 */ 901 wp = cmd_find_inside_pane(c); 902 if (wp == NULL) 903 goto unknown_pane; 904 905 /* If we have a session in TMUX, see if it has this pane. */ 906 s = cmd_find_try_TMUX(c); 907 if (s != NULL) { 908 RB_FOREACH(wl, winlinks, &s->windows) { 909 if (window_has_pane(wl->window, wp)) 910 break; 911 } 912 if (wl != NULL) { 913 log_debug("%s: session $%u has pane %%%u", __func__, 914 s->id, wp->id); 915 916 fs->s = s; 917 fs->wl = s->curw; /* use current session */ 918 fs->w = fs->wl->window; 919 fs->wp = fs->w->active; /* use active pane */ 920 921 cmd_find_log_state(__func__, fs); 922 return (0); 923 } else { 924 log_debug("%s: session $%u does not have pane %%%u", 925 __func__, s->id, wp->id); 926 } 927 } 928 929 /* 930 * Don't have a session, or it doesn't have this pane. Try all 931 * sessions. 932 */ 933 fs->w = wp->window; 934 if (cmd_find_best_session_with_window(fs) != 0) { 935 /* 936 * The window may have been destroyed but the pane 937 * still on all_window_panes due to something else 938 * holding a reference. 939 */ 940 goto unknown_pane; 941 } 942 fs->wl = fs->s->curw; 943 fs->w = fs->wl->window; 944 fs->wp = fs->w->active; /* use active pane */ 945 946 cmd_find_log_state(__func__, fs); 947 return (0); 948 949 unknown_pane: 950 /* 951 * We're not running in a known pane, but maybe this client has TMUX 952 * in the environment. That'd give us a session. 953 */ 954 s = cmd_find_try_TMUX(c); 955 if (s != NULL) { 956 cmd_find_from_session(fs, s, flags); 957 return (0); 958 } 959 960 /* Otherwise we need to guess. */ 961 return (cmd_find_from_nothing(fs, flags)); 962 } 963 964 /* 965 * Split target into pieces and resolve for the given type. Fills in the given 966 * state. Returns 0 on success or -1 on error. 967 */ 968 int 969 cmd_find_target(struct cmd_find_state *fs, struct cmdq_item *item, 970 const char *target, enum cmd_find_type type, int flags) 971 { 972 struct mouse_event *m; 973 struct cmd_find_state current; 974 char *colon, *period, *copy = NULL; 975 const char *session, *window, *pane, *s; 976 int window_only = 0, pane_only = 0; 977 978 /* Can fail flag implies quiet. */ 979 if (flags & CMD_FIND_CANFAIL) 980 flags |= CMD_FIND_QUIET; 981 982 /* Log the arguments. */ 983 if (type == CMD_FIND_PANE) 984 s = "pane"; 985 else if (type == CMD_FIND_WINDOW) 986 s = "window"; 987 else if (type == CMD_FIND_SESSION) 988 s = "session"; 989 else 990 s = "unknown"; 991 if (target == NULL) 992 log_debug("%s: target none, type %s", __func__, s); 993 else 994 log_debug("%s: target %s, type %s", __func__, target, s); 995 log_debug("%s: item %p, flags %#x", __func__, item, flags); 996 997 /* Clear new state. */ 998 cmd_find_clear_state(fs, flags); 999 1000 /* Find current state. */ 1001 if (server_check_marked() && (flags & CMD_FIND_DEFAULT_MARKED)) { 1002 fs->current = &marked_pane; 1003 log_debug("%s: current is marked pane", __func__); 1004 } else if (cmd_find_valid_state(&item->shared->current)) { 1005 fs->current = &item->shared->current; 1006 log_debug("%s: current is from queue", __func__); 1007 } else if (cmd_find_from_client(¤t, item->client, flags) == 0) { 1008 fs->current = ¤t; 1009 log_debug("%s: current is from client", __func__); 1010 } else { 1011 if (~flags & CMD_FIND_QUIET) 1012 cmdq_error(item, "no current target"); 1013 goto error; 1014 } 1015 if (!cmd_find_valid_state(fs->current)) 1016 fatalx("invalid current find state"); 1017 1018 /* An empty or NULL target is the current. */ 1019 if (target == NULL || *target == '\0') 1020 goto current; 1021 1022 /* Mouse target is a plain = or {mouse}. */ 1023 if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) { 1024 m = &item->shared->mouse; 1025 switch (type) { 1026 case CMD_FIND_PANE: 1027 fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl); 1028 if (fs->wp != NULL) 1029 fs->w = fs->wl->window; 1030 break; 1031 case CMD_FIND_WINDOW: 1032 case CMD_FIND_SESSION: 1033 fs->wl = cmd_mouse_window(m, &fs->s); 1034 if (fs->wl != NULL) { 1035 fs->w = fs->wl->window; 1036 fs->wp = fs->w->active; 1037 } 1038 break; 1039 } 1040 if (fs->wp == NULL) { 1041 if (~flags & CMD_FIND_QUIET) 1042 cmdq_error(item, "no mouse target"); 1043 goto error; 1044 } 1045 goto found; 1046 } 1047 1048 /* Marked target is a plain ~ or {marked}. */ 1049 if (strcmp(target, "~") == 0 || strcmp(target, "{marked}") == 0) { 1050 if (!server_check_marked()) { 1051 if (~flags & CMD_FIND_QUIET) 1052 cmdq_error(item, "no marked target"); 1053 goto error; 1054 } 1055 cmd_find_copy_state(fs, &marked_pane); 1056 goto found; 1057 } 1058 1059 /* Find separators if they exist. */ 1060 copy = xstrdup(target); 1061 colon = strchr(copy, ':'); 1062 if (colon != NULL) 1063 *colon++ = '\0'; 1064 if (colon == NULL) 1065 period = strchr(copy, '.'); 1066 else 1067 period = strchr(colon, '.'); 1068 if (period != NULL) 1069 *period++ = '\0'; 1070 1071 /* Set session, window and pane parts. */ 1072 session = window = pane = NULL; 1073 if (colon != NULL && period != NULL) { 1074 session = copy; 1075 window = colon; 1076 window_only = 1; 1077 pane = period; 1078 pane_only = 1; 1079 } else if (colon != NULL && period == NULL) { 1080 session = copy; 1081 window = colon; 1082 window_only = 1; 1083 } else if (colon == NULL && period != NULL) { 1084 window = copy; 1085 pane = period; 1086 pane_only = 1; 1087 } else { 1088 if (*copy == '$') 1089 session = copy; 1090 else if (*copy == '@') 1091 window = copy; 1092 else if (*copy == '%') 1093 pane = copy; 1094 else { 1095 switch (type) { 1096 case CMD_FIND_SESSION: 1097 session = copy; 1098 break; 1099 case CMD_FIND_WINDOW: 1100 window = copy; 1101 break; 1102 case CMD_FIND_PANE: 1103 pane = copy; 1104 break; 1105 } 1106 } 1107 } 1108 1109 /* Set exact match flags. */ 1110 if (session != NULL && *session == '=') { 1111 session++; 1112 fs->flags |= CMD_FIND_EXACT_SESSION; 1113 } 1114 if (window != NULL && *window == '=') { 1115 window++; 1116 fs->flags |= CMD_FIND_EXACT_WINDOW; 1117 } 1118 1119 /* Empty is the same as NULL. */ 1120 if (session != NULL && *session == '\0') 1121 session = NULL; 1122 if (window != NULL && *window == '\0') 1123 window = NULL; 1124 if (pane != NULL && *pane == '\0') 1125 pane = NULL; 1126 1127 /* Map though conversion table. */ 1128 if (session != NULL) 1129 session = cmd_find_map_table(cmd_find_session_table, session); 1130 if (window != NULL) 1131 window = cmd_find_map_table(cmd_find_window_table, window); 1132 if (pane != NULL) 1133 pane = cmd_find_map_table(cmd_find_pane_table, pane); 1134 1135 log_debug("%s: target %s (flags %#x): session=%s, window=%s, pane=%s", 1136 __func__, target, flags, session == NULL ? "none" : session, 1137 window == NULL ? "none" : window, pane == NULL ? "none" : pane); 1138 1139 /* No pane is allowed if want an index. */ 1140 if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) { 1141 if (~flags & CMD_FIND_QUIET) 1142 cmdq_error(item, "can't specify pane here"); 1143 goto error; 1144 } 1145 1146 /* If the session isn't NULL, look it up. */ 1147 if (session != NULL) { 1148 /* This will fill in session. */ 1149 if (cmd_find_get_session(fs, session) != 0) 1150 goto no_session; 1151 1152 /* If window and pane are NULL, use that session's current. */ 1153 if (window == NULL && pane == NULL) { 1154 fs->wl = fs->s->curw; 1155 fs->idx = -1; 1156 fs->w = fs->wl->window; 1157 fs->wp = fs->w->active; 1158 goto found; 1159 } 1160 1161 /* If window is present but pane not, find window in session. */ 1162 if (window != NULL && pane == NULL) { 1163 /* This will fill in winlink and window. */ 1164 if (cmd_find_get_window_with_session(fs, window) != 0) 1165 goto no_window; 1166 if (fs->wl != NULL) /* can be NULL if index only */ 1167 fs->wp = fs->wl->window->active; 1168 goto found; 1169 } 1170 1171 /* If pane is present but window not, find pane. */ 1172 if (window == NULL && pane != NULL) { 1173 /* This will fill in winlink and window and pane. */ 1174 if (cmd_find_get_pane_with_session(fs, pane) != 0) 1175 goto no_pane; 1176 goto found; 1177 } 1178 1179 /* 1180 * If window and pane are present, find both in session. This 1181 * will fill in winlink and window. 1182 */ 1183 if (cmd_find_get_window_with_session(fs, window) != 0) 1184 goto no_window; 1185 /* This will fill in pane. */ 1186 if (cmd_find_get_pane_with_window(fs, pane) != 0) 1187 goto no_pane; 1188 goto found; 1189 } 1190 1191 /* No session. If window and pane, try them. */ 1192 if (window != NULL && pane != NULL) { 1193 /* This will fill in session, winlink and window. */ 1194 if (cmd_find_get_window(fs, window, window_only) != 0) 1195 goto no_window; 1196 /* This will fill in pane. */ 1197 if (cmd_find_get_pane_with_window(fs, pane) != 0) 1198 goto no_pane; 1199 goto found; 1200 } 1201 1202 /* If just window is present, try it. */ 1203 if (window != NULL && pane == NULL) { 1204 /* This will fill in session, winlink and window. */ 1205 if (cmd_find_get_window(fs, window, window_only) != 0) 1206 goto no_window; 1207 if (fs->wl != NULL) /* can be NULL if index only */ 1208 fs->wp = fs->wl->window->active; 1209 goto found; 1210 } 1211 1212 /* If just pane is present, try it. */ 1213 if (window == NULL && pane != NULL) { 1214 /* This will fill in session, winlink, window and pane. */ 1215 if (cmd_find_get_pane(fs, pane, pane_only) != 0) 1216 goto no_pane; 1217 goto found; 1218 } 1219 1220 current: 1221 /* Use the current session. */ 1222 cmd_find_copy_state(fs, fs->current); 1223 if (flags & CMD_FIND_WINDOW_INDEX) 1224 fs->idx = -1; 1225 goto found; 1226 1227 error: 1228 fs->current = NULL; 1229 log_debug("%s: error", __func__); 1230 1231 free(copy); 1232 if (flags & CMD_FIND_CANFAIL) 1233 return (0); 1234 return (-1); 1235 1236 found: 1237 fs->current = NULL; 1238 cmd_find_log_state(__func__, fs); 1239 1240 free(copy); 1241 return (0); 1242 1243 no_session: 1244 if (~flags & CMD_FIND_QUIET) 1245 cmdq_error(item, "can't find session %s", session); 1246 goto error; 1247 1248 no_window: 1249 if (~flags & CMD_FIND_QUIET) 1250 cmdq_error(item, "can't find window %s", window); 1251 goto error; 1252 1253 no_pane: 1254 if (~flags & CMD_FIND_QUIET) 1255 cmdq_error(item, "can't find pane %s", pane); 1256 goto error; 1257 } 1258 1259 /* Find the current client. */ 1260 static struct client * 1261 cmd_find_current_client(struct cmdq_item *item, int quiet) 1262 { 1263 struct client *c; 1264 struct session *s; 1265 struct window_pane *wp; 1266 struct cmd_find_state fs; 1267 1268 if (item->client != NULL && item->client->session != NULL) 1269 return (item->client); 1270 1271 c = NULL; 1272 if ((wp = cmd_find_inside_pane(item->client)) != NULL) { 1273 cmd_find_clear_state(&fs, CMD_FIND_QUIET); 1274 fs.w = wp->window; 1275 if (cmd_find_best_session_with_window(&fs) == 0) 1276 c = cmd_find_best_client(fs.s); 1277 } else { 1278 s = cmd_find_best_session(NULL, 0, CMD_FIND_QUIET); 1279 if (s != NULL) 1280 c = cmd_find_best_client(s); 1281 } 1282 if (c == NULL && !quiet) 1283 cmdq_error(item, "no current client"); 1284 log_debug("%s: no target, return %p", __func__, c); 1285 return (c); 1286 } 1287 1288 /* Find the target client or report an error and return NULL. */ 1289 struct client * 1290 cmd_find_client(struct cmdq_item *item, const char *target, int quiet) 1291 { 1292 struct client *c; 1293 char *copy; 1294 size_t size; 1295 1296 /* A NULL argument means the current client. */ 1297 if (target == NULL) 1298 return (cmd_find_current_client(item, quiet)); 1299 copy = xstrdup(target); 1300 1301 /* Trim a single trailing colon if any. */ 1302 size = strlen(copy); 1303 if (size != 0 && copy[size - 1] == ':') 1304 copy[size - 1] = '\0'; 1305 1306 /* Check name and path of each client. */ 1307 TAILQ_FOREACH(c, &clients, entry) { 1308 if (c->session == NULL) 1309 continue; 1310 if (strcmp(copy, c->name) == 0) 1311 break; 1312 1313 if (*c->ttyname == '\0') 1314 continue; 1315 if (strcmp(copy, c->ttyname) == 0) 1316 break; 1317 if (strncmp(c->ttyname, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0) 1318 continue; 1319 if (strcmp(copy, c->ttyname + (sizeof _PATH_DEV) - 1) == 0) 1320 break; 1321 } 1322 1323 /* If no client found, report an error. */ 1324 if (c == NULL && !quiet) 1325 cmdq_error(item, "can't find client %s", copy); 1326 1327 free(copy); 1328 log_debug("%s: target %s, return %p", __func__, target, c); 1329 return (c); 1330 } 1331