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