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Annotation of src/usr.bin/tmux/cmd-find.c, Revision 1.55

1.55    ! nicm        1: /* $OpenBSD: cmd-find.c,v 1.54 2017/06/16 15:12:38 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.30      nicm        4:  * Copyright (c) 2015 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:
                     21: #include <fnmatch.h>
                     22: #include <limits.h>
                     23: #include <stdlib.h>
                     24: #include <string.h>
                     25: #include <paths.h>
1.15      nicm       26: #include <unistd.h>
1.1       nicm       27:
                     28: #include "tmux.h"
                     29:
1.33      nicm       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 int     cmd_find_get_session(struct cmd_find_state *, const char *);
1.44      nicm       39: static int     cmd_find_get_window(struct cmd_find_state *, const char *, int);
1.33      nicm       40: static int     cmd_find_get_window_with_session(struct cmd_find_state *,
                     41:                    const char *);
1.44      nicm       42: static int     cmd_find_get_pane(struct cmd_find_state *, const char *, int);
1.33      nicm       43: static int     cmd_find_get_pane_with_session(struct cmd_find_state *,
                     44:                    const char *);
                     45: static int     cmd_find_get_pane_with_window(struct cmd_find_state *,
                     46:                    const char *);
1.1       nicm       47:
1.33      nicm       48: static const char *cmd_find_session_table[][2] = {
1.1       nicm       49:        { NULL, NULL }
                     50: };
1.33      nicm       51: static const char *cmd_find_window_table[][2] = {
1.1       nicm       52:        { "{start}", "^" },
                     53:        { "{last}", "!" },
                     54:        { "{end}", "$" },
                     55:        { "{next}", "+" },
                     56:        { "{previous}", "-" },
                     57:        { NULL, NULL }
                     58: };
1.33      nicm       59: static const char *cmd_find_pane_table[][2] = {
1.1       nicm       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" },
1.12      nicm       71:        { "{up-of}", "{up-of}" },
                     72:        { "{down-of}", "{down-of}" },
                     73:        { "{left-of}", "{left-of}" },
                     74:        { "{right-of}", "{right-of}" },
1.1       nicm       75:        { NULL, NULL }
                     76: };
                     77:
1.15      nicm       78: /* Get session from TMUX if present. */
1.33      nicm       79: static struct session *
1.48      nicm       80: cmd_find_try_TMUX(struct client *c)
1.15      nicm       81: {
                     82:        struct environ_entry    *envent;
                     83:        char                     tmp[256];
                     84:        long long                pid;
                     85:        u_int                    session;
                     86:
1.17      nicm       87:        envent = environ_find(c->environ, "TMUX");
1.15      nicm       88:        if (envent == NULL)
                     89:                return (NULL);
                     90:
                     91:        if (sscanf(envent->value, "%255[^,],%lld,%d", tmp, &pid, &session) != 3)
                     92:                return (NULL);
                     93:        if (pid != getpid())
                     94:                return (NULL);
1.48      nicm       95:        log_debug("client %p TMUX %s (session @%u)", c, envent->value, session);
                     96:        return (session_find_by_id(session));
1.15      nicm       97: }
                     98:
1.55    ! nicm       99: /* Find pane containing client if any. */
        !           100: static struct window_pane *
        !           101: cmd_find_inside_pane(struct client *c)
        !           102: {
        !           103:        struct window_pane      *wp;
        !           104:
        !           105:        if (c == NULL)
        !           106:                return (NULL);
        !           107:
        !           108:        RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
        !           109:                if (strcmp(wp->tty, c->ttyname) == 0)
        !           110:                        break;
        !           111:        }
        !           112:        return (wp);
        !           113: }
        !           114:
1.1       nicm      115: /* Is this client better? */
1.33      nicm      116: static int
1.1       nicm      117: cmd_find_client_better(struct client *c, struct client *than)
                    118: {
                    119:        if (than == NULL)
                    120:                return (1);
                    121:        return (timercmp(&c->activity_time, &than->activity_time, >));
                    122: }
                    123:
1.48      nicm      124: /* Find best client for session. */
1.33      nicm      125: static struct client *
1.48      nicm      126: cmd_find_best_client(struct session *s)
1.1       nicm      127: {
                    128:        struct client   *c_loop, *c;
1.48      nicm      129:
                    130:        if (s->flags & SESSION_UNATTACHED)
                    131:                s = NULL;
1.1       nicm      132:
                    133:        c = NULL;
1.48      nicm      134:        TAILQ_FOREACH(c_loop, &clients, entry) {
                    135:                if (c_loop->session == NULL)
                    136:                        continue;
                    137:                if (s != NULL && c_loop->session != s)
                    138:                        continue;
                    139:                if (cmd_find_client_better(c_loop, c))
                    140:                        c = c_loop;
1.1       nicm      141:        }
                    142:        return (c);
                    143: }
                    144:
                    145: /* Is this session better? */
1.33      nicm      146: static int
1.1       nicm      147: cmd_find_session_better(struct session *s, struct session *than, int flags)
                    148: {
                    149:        int     attached;
                    150:
                    151:        if (than == NULL)
                    152:                return (1);
                    153:        if (flags & CMD_FIND_PREFER_UNATTACHED) {
                    154:                attached = (~than->flags & SESSION_UNATTACHED);
                    155:                if (attached && (s->flags & SESSION_UNATTACHED))
                    156:                        return (1);
                    157:                else if (!attached && (~s->flags & SESSION_UNATTACHED))
                    158:                        return (0);
                    159:        }
                    160:        return (timercmp(&s->activity_time, &than->activity_time, >));
                    161: }
                    162:
                    163: /* Find best session from a list, or all if list is NULL. */
1.33      nicm      164: static struct session *
1.1       nicm      165: cmd_find_best_session(struct session **slist, u_int ssize, int flags)
                    166: {
                    167:        struct session   *s_loop, *s;
                    168:        u_int             i;
                    169:
                    170:        s = NULL;
                    171:        if (slist != NULL) {
                    172:                for (i = 0; i < ssize; i++) {
                    173:                        if (cmd_find_session_better(slist[i], s, flags))
                    174:                                s = slist[i];
                    175:                }
                    176:        } else {
                    177:                RB_FOREACH(s_loop, sessions, &sessions) {
                    178:                        if (cmd_find_session_better(s_loop, s, flags))
                    179:                                s = s_loop;
                    180:                }
                    181:        }
                    182:        return (s);
                    183: }
                    184:
                    185: /* Find best session and winlink for window. */
1.33      nicm      186: static int
1.1       nicm      187: cmd_find_best_session_with_window(struct cmd_find_state *fs)
                    188: {
                    189:        struct session  **slist = NULL;
                    190:        u_int             ssize;
                    191:        struct session   *s;
                    192:
                    193:        ssize = 0;
                    194:        RB_FOREACH(s, sessions, &sessions) {
                    195:                if (!session_has(s, fs->w))
                    196:                        continue;
1.7       nicm      197:                slist = xreallocarray(slist, ssize + 1, sizeof *slist);
1.1       nicm      198:                slist[ssize++] = s;
                    199:        }
                    200:        if (ssize == 0)
                    201:                goto fail;
                    202:        fs->s = cmd_find_best_session(slist, ssize, fs->flags);
                    203:        if (fs->s == NULL)
                    204:                goto fail;
1.7       nicm      205:        free(slist);
1.1       nicm      206:        return (cmd_find_best_winlink_with_window(fs));
                    207:
                    208: fail:
                    209:        free(slist);
                    210:        return (-1);
                    211: }
                    212:
                    213: /*
                    214:  * Find the best winlink for a window (the current if it contains the pane,
                    215:  * otherwise the first).
                    216:  */
1.33      nicm      217: static int
1.1       nicm      218: cmd_find_best_winlink_with_window(struct cmd_find_state *fs)
                    219: {
                    220:        struct winlink   *wl, *wl_loop;
                    221:
                    222:        wl = NULL;
1.38      nicm      223:        if (fs->s->curw != NULL && fs->s->curw->window == fs->w)
1.1       nicm      224:                wl = fs->s->curw;
                    225:        else {
                    226:                RB_FOREACH(wl_loop, winlinks, &fs->s->windows) {
                    227:                        if (wl_loop->window == fs->w) {
                    228:                                wl = wl_loop;
                    229:                                break;
                    230:                        }
                    231:                }
                    232:        }
                    233:        if (wl == NULL)
                    234:                return (-1);
                    235:        fs->wl = wl;
                    236:        fs->idx = fs->wl->idx;
                    237:        return (0);
                    238: }
                    239:
                    240: /* Maps string in table. */
1.33      nicm      241: static const char *
1.1       nicm      242: cmd_find_map_table(const char *table[][2], const char *s)
                    243: {
                    244:        u_int   i;
                    245:
                    246:        for (i = 0; table[i][0] != NULL; i++) {
                    247:                if (strcmp(s, table[i][0]) == 0)
                    248:                        return (table[i][1]);
                    249:        }
                    250:        return (s);
                    251: }
                    252:
                    253: /* Find session from string. Fills in s. */
1.33      nicm      254: static int
1.1       nicm      255: cmd_find_get_session(struct cmd_find_state *fs, const char *session)
                    256: {
                    257:        struct session  *s, *s_loop;
1.32      nicm      258:        struct client   *c;
1.1       nicm      259:
                    260:        log_debug("%s: %s", __func__, session);
                    261:
                    262:        /* Check for session ids starting with $. */
                    263:        if (*session == '$') {
                    264:                fs->s = session_find_by_id_str(session);
                    265:                if (fs->s == NULL)
                    266:                        return (-1);
                    267:                return (0);
                    268:        }
                    269:
                    270:        /* Look for exactly this session. */
                    271:        fs->s = session_find(session);
                    272:        if (fs->s != NULL)
                    273:                return (0);
                    274:
1.32      nicm      275:        /* Look for as a client. */
                    276:        c = cmd_find_client(NULL, session, 1);
                    277:        if (c != NULL && c->session != NULL) {
                    278:                fs->s = c->session;
                    279:                return (0);
                    280:        }
                    281:
1.9       nicm      282:        /* Stop now if exact only. */
                    283:        if (fs->flags & CMD_FIND_EXACT_SESSION)
                    284:                return (-1);
                    285:
1.1       nicm      286:        /* Otherwise look for prefix. */
                    287:        s = NULL;
                    288:        RB_FOREACH(s_loop, sessions, &sessions) {
                    289:                if (strncmp(session, s_loop->name, strlen(session)) == 0) {
                    290:                        if (s != NULL)
                    291:                                return (-1);
                    292:                        s = s_loop;
                    293:                }
                    294:        }
                    295:        if (s != NULL) {
                    296:                fs->s = s;
                    297:                return (0);
                    298:        }
                    299:
                    300:        /* Then as a pattern. */
                    301:        s = NULL;
                    302:        RB_FOREACH(s_loop, sessions, &sessions) {
                    303:                if (fnmatch(session, s_loop->name, 0) == 0) {
                    304:                        if (s != NULL)
                    305:                                return (-1);
                    306:                        s = s_loop;
                    307:                }
                    308:        }
                    309:        if (s != NULL) {
                    310:                fs->s = s;
                    311:                return (0);
                    312:        }
                    313:
                    314:        return (-1);
                    315: }
                    316:
                    317: /* Find window from string. Fills in s, wl, w. */
1.33      nicm      318: static int
1.44      nicm      319: cmd_find_get_window(struct cmd_find_state *fs, const char *window, int only)
1.1       nicm      320: {
                    321:        log_debug("%s: %s", __func__, window);
                    322:
                    323:        /* Check for window ids starting with @. */
                    324:        if (*window == '@') {
                    325:                fs->w = window_find_by_id_str(window);
                    326:                if (fs->w == NULL)
                    327:                        return (-1);
                    328:                return (cmd_find_best_session_with_window(fs));
                    329:        }
                    330:
                    331:        /* Not a window id, so use the current session. */
                    332:        fs->s = fs->current->s;
                    333:
                    334:        /* We now only need to find the winlink in this session. */
1.4       nicm      335:        if (cmd_find_get_window_with_session(fs, window) == 0)
                    336:                return (0);
                    337:
1.42      nicm      338:        /* Otherwise try as a session itself. */
1.44      nicm      339:        if (!only && cmd_find_get_session(fs, window) == 0) {
1.21      nicm      340:                fs->wl = fs->s->curw;
                    341:                fs->w = fs->wl->window;
                    342:                if (~fs->flags & CMD_FIND_WINDOW_INDEX)
1.6       nicm      343:                        fs->idx = fs->wl->idx;
1.4       nicm      344:                return (0);
                    345:        }
                    346:
                    347:        return (-1);
1.1       nicm      348: }
                    349:
                    350: /*
                    351:  * Find window from string, assuming it is in given session. Needs s, fills in
                    352:  * wl and w.
                    353:  */
1.33      nicm      354: static int
1.1       nicm      355: cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
                    356: {
                    357:        struct winlink  *wl;
                    358:        const char      *errstr;
1.9       nicm      359:        int              idx, n, exact;
1.1       nicm      360:        struct session  *s;
                    361:
                    362:        log_debug("%s: %s", __func__, window);
1.9       nicm      363:        exact = (fs->flags & CMD_FIND_EXACT_WINDOW);
1.1       nicm      364:
1.21      nicm      365:        /*
                    366:         * Start with the current window as the default. So if only an index is
                    367:         * found, the window will be the current.
                    368:         */
                    369:        fs->wl = fs->s->curw;
                    370:        fs->w = fs->wl->window;
                    371:
1.1       nicm      372:        /* Check for window ids starting with @. */
                    373:        if (*window == '@') {
                    374:                fs->w = window_find_by_id_str(window);
                    375:                if (fs->w == NULL || !session_has(fs->s, fs->w))
                    376:                        return (-1);
                    377:                return (cmd_find_best_winlink_with_window(fs));
                    378:        }
                    379:
                    380:        /* Try as an offset. */
1.10      nicm      381:        if (!exact && (window[0] == '+' || window[0] == '-')) {
1.1       nicm      382:                if (window[1] != '\0')
                    383:                        n = strtonum(window + 1, 1, INT_MAX, NULL);
                    384:                else
                    385:                        n = 1;
                    386:                s = fs->s;
                    387:                if (fs->flags & CMD_FIND_WINDOW_INDEX) {
                    388:                        if (window[0] == '+') {
                    389:                                if (INT_MAX - s->curw->idx < n)
                    390:                                        return (-1);
                    391:                                fs->idx = s->curw->idx + n;
                    392:                        } else {
                    393:                                if (n < s->curw->idx)
                    394:                                        return (-1);
                    395:                                fs->idx = s->curw->idx - n;
                    396:                        }
                    397:                        return (0);
                    398:                }
                    399:                if (window[0] == '+')
                    400:                        fs->wl = winlink_next_by_number(s->curw, s, n);
                    401:                else
                    402:                        fs->wl = winlink_previous_by_number(s->curw, s, n);
                    403:                if (fs->wl != NULL) {
                    404:                        fs->idx = fs->wl->idx;
                    405:                        fs->w = fs->wl->window;
                    406:                        return (0);
                    407:                }
                    408:        }
                    409:
                    410:        /* Try special characters. */
1.9       nicm      411:        if (!exact) {
                    412:                if (strcmp(window, "!") == 0) {
                    413:                        fs->wl = TAILQ_FIRST(&fs->s->lastw);
                    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_MIN(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:                } else if (strcmp(window, "$") == 0) {
                    427:                        fs->wl = RB_MAX(winlinks, &fs->s->windows);
                    428:                        if (fs->wl == NULL)
                    429:                                return (-1);
                    430:                        fs->idx = fs->wl->idx;
                    431:                        fs->w = fs->wl->window;
                    432:                        return (0);
                    433:                }
1.1       nicm      434:        }
                    435:
                    436:        /* First see if this is a valid window index in this session. */
1.9       nicm      437:        if (window[0] != '+' && window[0] != '-') {
                    438:                idx = strtonum(window, 0, INT_MAX, &errstr);
                    439:                if (errstr == NULL) {
                    440:                        if (fs->flags & CMD_FIND_WINDOW_INDEX) {
                    441:                                fs->idx = idx;
                    442:                                return (0);
                    443:                        }
                    444:                        fs->wl = winlink_find_by_index(&fs->s->windows, idx);
                    445:                        if (fs->wl != NULL) {
                    446:                                fs->w = fs->wl->window;
                    447:                                return (0);
                    448:                        }
1.1       nicm      449:                }
                    450:        }
                    451:
                    452:        /* Look for exact matches, error if more than one. */
                    453:        fs->wl = NULL;
                    454:        RB_FOREACH(wl, winlinks, &fs->s->windows) {
                    455:                if (strcmp(window, wl->window->name) == 0) {
                    456:                        if (fs->wl != NULL)
                    457:                                return (-1);
                    458:                        fs->wl = wl;
                    459:                }
                    460:        }
                    461:        if (fs->wl != NULL) {
                    462:                fs->idx = fs->wl->idx;
                    463:                fs->w = fs->wl->window;
                    464:                return (0);
                    465:        }
1.9       nicm      466:
                    467:        /* Stop now if exact only. */
                    468:        if (exact)
                    469:                return (-1);
                    470:
1.1       nicm      471:        /* Try as the start of a window name, error if multiple. */
                    472:        fs->wl = NULL;
                    473:        RB_FOREACH(wl, winlinks, &fs->s->windows) {
                    474:                if (strncmp(window, wl->window->name, strlen(window)) == 0) {
                    475:                        if (fs->wl != NULL)
                    476:                                return (-1);
                    477:                        fs->wl = wl;
                    478:                }
                    479:        }
                    480:        if (fs->wl != NULL) {
                    481:                fs->idx = fs->wl->idx;
                    482:                fs->w = fs->wl->window;
                    483:                return (0);
                    484:        }
                    485:
                    486:        /* Now look for pattern matches, again error if multiple. */
                    487:        fs->wl = NULL;
                    488:        RB_FOREACH(wl, winlinks, &fs->s->windows) {
                    489:                if (fnmatch(window, wl->window->name, 0) == 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:        return (-1);
                    502: }
                    503:
                    504: /* Find pane from string. Fills in s, wl, w, wp. */
1.33      nicm      505: static int
1.44      nicm      506: cmd_find_get_pane(struct cmd_find_state *fs, const char *pane, int only)
1.1       nicm      507: {
                    508:        log_debug("%s: %s", __func__, pane);
                    509:
                    510:        /* Check for pane ids starting with %. */
                    511:        if (*pane == '%') {
                    512:                fs->wp = window_pane_find_by_id_str(pane);
1.40      nicm      513:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      514:                        return (-1);
                    515:                fs->w = fs->wp->window;
                    516:                return (cmd_find_best_session_with_window(fs));
                    517:        }
                    518:
1.4       nicm      519:        /* Not a pane id, so try the current session and window. */
1.1       nicm      520:        fs->s = fs->current->s;
                    521:        fs->wl = fs->current->wl;
                    522:        fs->idx = fs->current->idx;
                    523:        fs->w = fs->current->w;
                    524:
                    525:        /* We now only need to find the pane in this window. */
1.4       nicm      526:        if (cmd_find_get_pane_with_window(fs, pane) == 0)
                    527:                return (0);
                    528:
1.42      nicm      529:        /* Otherwise try as a window itself (this will also try as session). */
1.44      nicm      530:        if (!only && cmd_find_get_window(fs, pane, 0) == 0) {
1.4       nicm      531:                fs->wp = fs->w->active;
                    532:                return (0);
                    533:        }
                    534:
                    535:        return (-1);
1.1       nicm      536: }
                    537:
                    538: /*
                    539:  * Find pane from string, assuming it is in given session. Needs s, fills in wl
                    540:  * and w and wp.
                    541:  */
1.33      nicm      542: static int
1.1       nicm      543: cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane)
                    544: {
                    545:        log_debug("%s: %s", __func__, pane);
                    546:
                    547:        /* Check for pane ids starting with %. */
                    548:        if (*pane == '%') {
                    549:                fs->wp = window_pane_find_by_id_str(pane);
1.40      nicm      550:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      551:                        return (-1);
                    552:                fs->w = fs->wp->window;
                    553:                return (cmd_find_best_winlink_with_window(fs));
                    554:        }
                    555:
                    556:        /* Otherwise use the current window. */
                    557:        fs->wl = fs->s->curw;
                    558:        fs->idx = fs->wl->idx;
                    559:        fs->w = fs->wl->window;
                    560:
                    561:        /* Now we just need to look up the pane. */
                    562:        return (cmd_find_get_pane_with_window(fs, pane));
                    563: }
                    564:
                    565: /*
                    566:  * Find pane from string, assuming it is in the given window. Needs w, fills in
                    567:  * wp.
                    568:  */
1.33      nicm      569: static int
1.1       nicm      570: cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
                    571: {
                    572:        const char              *errstr;
                    573:        int                      idx;
                    574:        struct window_pane      *wp;
                    575:        u_int                    n;
                    576:
                    577:        log_debug("%s: %s", __func__, pane);
                    578:
                    579:        /* Check for pane ids starting with %. */
                    580:        if (*pane == '%') {
                    581:                fs->wp = window_pane_find_by_id_str(pane);
1.40      nicm      582:                if (fs->wp == NULL || window_pane_outside(fs->wp))
                    583:                        return (-1);
                    584:                if (fs->wp->window != fs->w)
1.1       nicm      585:                        return (-1);
                    586:                return (0);
                    587:        }
                    588:
                    589:        /* Try special characters. */
                    590:        if (strcmp(pane, "!") == 0) {
                    591:                if (fs->w->last == NULL)
                    592:                        return (-1);
                    593:                fs->wp = fs->w->last;
1.40      nicm      594:                if (fs->wp == NULL || window_pane_outside(fs->wp))
                    595:                        return (-1);
1.1       nicm      596:                return (0);
1.12      nicm      597:        } else if (strcmp(pane, "{up-of}") == 0) {
1.1       nicm      598:                fs->wp = window_pane_find_up(fs->w->active);
1.40      nicm      599:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      600:                        return (-1);
                    601:                return (0);
1.12      nicm      602:        } else if (strcmp(pane, "{down-of}") == 0) {
1.1       nicm      603:                fs->wp = window_pane_find_down(fs->w->active);
1.40      nicm      604:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      605:                        return (-1);
                    606:                return (0);
1.12      nicm      607:        } else if (strcmp(pane, "{left-of}") == 0) {
1.1       nicm      608:                fs->wp = window_pane_find_left(fs->w->active);
1.40      nicm      609:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      610:                        return (-1);
                    611:                return (0);
1.12      nicm      612:        } else if (strcmp(pane, "{right-of}") == 0) {
1.1       nicm      613:                fs->wp = window_pane_find_right(fs->w->active);
1.40      nicm      614:                if (fs->wp == NULL || window_pane_outside(fs->wp))
1.1       nicm      615:                        return (-1);
                    616:                return (0);
                    617:        }
                    618:
                    619:        /* Try as an offset. */
                    620:        if (pane[0] == '+' || pane[0] == '-') {
                    621:                if (pane[1] != '\0')
                    622:                        n = strtonum(pane + 1, 1, INT_MAX, NULL);
                    623:                else
                    624:                        n = 1;
                    625:                wp = fs->w->active;
                    626:                if (pane[0] == '+')
                    627:                        fs->wp = window_pane_next_by_number(fs->w, wp, n);
                    628:                else
                    629:                        fs->wp = window_pane_previous_by_number(fs->w, wp, n);
1.40      nicm      630:                if (fs->wp != NULL && !window_pane_outside(fs->wp))
1.1       nicm      631:                        return (0);
                    632:        }
                    633:
                    634:        /* Get pane by index. */
                    635:        idx = strtonum(pane, 0, INT_MAX, &errstr);
                    636:        if (errstr == NULL) {
                    637:                fs->wp = window_pane_at_index(fs->w, idx);
1.40      nicm      638:                if (fs->wp != NULL && !window_pane_outside(fs->wp))
1.1       nicm      639:                        return (0);
                    640:        }
                    641:
                    642:        /* Try as a description. */
                    643:        fs->wp = window_find_string(fs->w, pane);
1.40      nicm      644:        if (fs->wp != NULL && !window_pane_outside(fs->wp))
1.1       nicm      645:                return (0);
                    646:
                    647:        return (-1);
                    648: }
                    649:
                    650: /* Clear state. */
                    651: void
1.48      nicm      652: cmd_find_clear_state(struct cmd_find_state *fs, int flags)
1.1       nicm      653: {
1.7       nicm      654:        memset(fs, 0, sizeof *fs);
1.1       nicm      655:
                    656:        fs->flags = flags;
                    657:
                    658:        fs->idx = -1;
                    659: }
                    660:
1.48      nicm      661: /* Check if state is empty. */
1.34      nicm      662: int
                    663: cmd_find_empty_state(struct cmd_find_state *fs)
                    664: {
                    665:        if (fs->s == NULL && fs->wl == NULL && fs->w == NULL && fs->wp == NULL)
                    666:                return (1);
                    667:        return (0);
                    668: }
                    669:
1.23      nicm      670: /* Check if a state if valid. */
                    671: int
                    672: cmd_find_valid_state(struct cmd_find_state *fs)
                    673: {
                    674:        struct winlink  *wl;
                    675:
                    676:        if (fs->s == NULL || fs->wl == NULL || fs->w == NULL || fs->wp == NULL)
                    677:                return (0);
                    678:
                    679:        if (!session_alive(fs->s))
                    680:                return (0);
                    681:
                    682:        RB_FOREACH(wl, winlinks, &fs->s->windows) {
                    683:                if (wl->window == fs->w && wl == fs->wl)
                    684:                        break;
                    685:        }
                    686:        if (wl == NULL)
                    687:                return (0);
                    688:
                    689:        if (fs->w != fs->wl->window)
                    690:                return (0);
                    691:
                    692:        if (!window_has_pane(fs->w, fs->wp))
                    693:                return (0);
1.40      nicm      694:        return (!window_pane_outside(fs->wp));
1.23      nicm      695: }
                    696:
                    697: /* Copy a state. */
                    698: void
                    699: cmd_find_copy_state(struct cmd_find_state *dst, struct cmd_find_state *src)
                    700: {
                    701:        dst->s = src->s;
                    702:        dst->wl = src->wl;
1.26      nicm      703:        dst->idx = src->idx;
                    704:        dst->w = src->w;
1.23      nicm      705:        dst->wp = src->wp;
                    706: }
                    707:
                    708: /* Log the result. */
                    709: void
                    710: cmd_find_log_state(const char *prefix, struct cmd_find_state *fs)
                    711: {
                    712:        if (fs->s != NULL)
                    713:                log_debug("%s: s=$%u", prefix, fs->s->id);
                    714:        else
                    715:                log_debug("%s: s=none", prefix);
                    716:        if (fs->wl != NULL) {
                    717:                log_debug("%s: wl=%u %d w=@%u %s", prefix, fs->wl->idx,
                    718:                    fs->wl->window == fs->w, fs->w->id, fs->w->name);
                    719:        } else
                    720:                log_debug("%s: wl=none", prefix);
                    721:        if (fs->wp != NULL)
                    722:                log_debug("%s: wp=%%%u", prefix, fs->wp->id);
                    723:        else
                    724:                log_debug("%s: wp=none", prefix);
                    725:        if (fs->idx != -1)
                    726:                log_debug("%s: idx=%d", prefix, fs->idx);
                    727:        else
                    728:                log_debug("%s: idx=none", prefix);
1.27      nicm      729: }
                    730:
                    731: /* Find state from a session. */
1.47      nicm      732: void
1.27      nicm      733: cmd_find_from_session(struct cmd_find_state *fs, struct session *s)
                    734: {
1.48      nicm      735:        cmd_find_clear_state(fs, 0);
1.27      nicm      736:
                    737:        fs->s = s;
                    738:        fs->wl = fs->s->curw;
                    739:        fs->w = fs->wl->window;
                    740:        fs->wp = fs->w->active;
1.29      nicm      741:
                    742:        cmd_find_log_state(__func__, fs);
                    743: }
                    744:
                    745: /* Find state from a winlink. */
1.47      nicm      746: void
1.46      nicm      747: cmd_find_from_winlink(struct cmd_find_state *fs, struct winlink *wl)
1.29      nicm      748: {
1.48      nicm      749:        cmd_find_clear_state(fs, 0);
1.29      nicm      750:
1.46      nicm      751:        fs->s = wl->session;
1.29      nicm      752:        fs->wl = wl;
                    753:        fs->w = wl->window;
                    754:        fs->wp = wl->window->active;
1.27      nicm      755:
                    756:        cmd_find_log_state(__func__, fs);
                    757: }
                    758:
1.35      nicm      759: /* Find state from a session and window. */
                    760: int
                    761: cmd_find_from_session_window(struct cmd_find_state *fs, struct session *s,
                    762:     struct window *w)
                    763: {
1.48      nicm      764:        cmd_find_clear_state(fs, 0);
1.35      nicm      765:
                    766:        fs->s = s;
                    767:        fs->w = w;
1.49      nicm      768:        if (cmd_find_best_winlink_with_window(fs) != 0) {
                    769:                cmd_find_clear_state(fs, 0);
1.35      nicm      770:                return (-1);
1.49      nicm      771:        }
1.35      nicm      772:        fs->wp = fs->w->active;
                    773:
                    774:        cmd_find_log_state(__func__, fs);
                    775:        return (0);
                    776: }
                    777:
1.27      nicm      778: /* Find state from a window. */
                    779: int
                    780: cmd_find_from_window(struct cmd_find_state *fs, struct window *w)
                    781: {
1.48      nicm      782:        cmd_find_clear_state(fs, 0);
1.27      nicm      783:
                    784:        fs->w = w;
1.49      nicm      785:        if (cmd_find_best_session_with_window(fs) != 0) {
                    786:                cmd_find_clear_state(fs, 0);
1.27      nicm      787:                return (-1);
1.49      nicm      788:        }
                    789:        if (cmd_find_best_winlink_with_window(fs) != 0) {
                    790:                cmd_find_clear_state(fs, 0);
1.27      nicm      791:                return (-1);
1.49      nicm      792:        }
1.35      nicm      793:        fs->wp = fs->w->active;
1.27      nicm      794:
                    795:        cmd_find_log_state(__func__, fs);
                    796:        return (0);
1.47      nicm      797: }
                    798:
                    799: /* Find state from a winlink and pane. */
                    800: void
                    801: cmd_find_from_winlink_pane(struct cmd_find_state *fs, struct winlink *wl,
                    802:     struct window_pane *wp)
                    803: {
1.48      nicm      804:        cmd_find_clear_state(fs, 0);
1.47      nicm      805:
                    806:        fs->s = wl->session;
                    807:        fs->wl = wl;
                    808:        fs->idx = fs->wl->idx;
                    809:        fs->w = fs->wl->window;
                    810:        fs->wp = wp;
                    811:
                    812:        cmd_find_log_state(__func__, fs);
1.27      nicm      813: }
                    814:
                    815: /* Find state from a pane. */
                    816: int
                    817: cmd_find_from_pane(struct cmd_find_state *fs, struct window_pane *wp)
                    818: {
                    819:        if (cmd_find_from_window(fs, wp->window) != 0)
                    820:                return (-1);
1.49      nicm      821:        if (window_pane_outside(wp)) {
                    822:                cmd_find_clear_state(fs, 0);
1.40      nicm      823:                return (-1);
1.49      nicm      824:        }
1.27      nicm      825:        fs->wp = wp;
                    826:
                    827:        cmd_find_log_state(__func__, fs);
                    828:        return (0);
1.23      nicm      829: }
                    830:
1.48      nicm      831: /* Find state from nothing. */
1.31      nicm      832: int
1.48      nicm      833: cmd_find_from_nothing(struct cmd_find_state *fs)
1.31      nicm      834: {
1.48      nicm      835:        cmd_find_clear_state(fs, 0);
                    836:
                    837:        fs->s = cmd_find_best_session(NULL, 0, fs->flags);
1.49      nicm      838:        if (fs->s == NULL) {
                    839:                cmd_find_clear_state(fs, 0);
1.48      nicm      840:                return (-1);
1.49      nicm      841:        }
1.48      nicm      842:        fs->wl = fs->s->curw;
                    843:        fs->idx = fs->wl->idx;
                    844:        fs->w = fs->wl->window;
                    845:        fs->wp = fs->w->active;
                    846:
                    847:        cmd_find_log_state(__func__, fs);
                    848:        return (0);
                    849: }
                    850:
                    851: /* Find state from mouse. */
                    852: int
                    853: cmd_find_from_mouse(struct cmd_find_state *fs, struct mouse_event *m)
                    854: {
                    855:        cmd_find_clear_state(fs, 0);
                    856:
                    857:        if (!m->valid)
                    858:                return (-1);
                    859:
                    860:        fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl);
1.49      nicm      861:        if (fs->wp == NULL) {
                    862:                cmd_find_clear_state(fs, 0);
1.48      nicm      863:                return (-1);
1.49      nicm      864:        }
1.48      nicm      865:        fs->w = fs->wl->window;
                    866:
                    867:        cmd_find_log_state(__func__, fs);
                    868:        return (0);
                    869: }
                    870:
                    871: /* Find state from client. */
                    872: int
                    873: cmd_find_from_client(struct cmd_find_state *fs, struct client *c)
                    874: {
                    875:        struct session          *s;
                    876:        struct winlink          *wl;
                    877:        struct window_pane      *wp;
                    878:
                    879:        /* If no client, treat as from nothing. */
                    880:        if (c == NULL)
                    881:                return (cmd_find_from_nothing(fs));
                    882:
                    883:        /* If this is an attached client, all done. */
                    884:        if (c->session != NULL) {
                    885:                cmd_find_from_session(fs, c->session);
                    886:                return (0);
                    887:        }
                    888:        cmd_find_clear_state(fs, 0);
                    889:
                    890:        /*
                    891:         * If this is an unattached client running in a pane, we can use that
                    892:         * to limit the list of sessions to those containing that pane.
                    893:         */
1.55    ! nicm      894:        wp = cmd_find_inside_pane(c);
1.48      nicm      895:        if (wp == NULL)
                    896:                goto unknown_pane;
                    897:
                    898:        /* If we have a session in TMUX, see if it has this pane. */
                    899:        s = cmd_find_try_TMUX(c);
                    900:        if (s != NULL) {
                    901:                RB_FOREACH(wl, winlinks, &s->windows) {
                    902:                        if (window_has_pane(wl->window, wp))
                    903:                                break;
                    904:                }
                    905:                if (wl != NULL) {
                    906:                        fs->s = s;
1.52      nicm      907:                        fs->wl = s->curw; /* use current session */
1.48      nicm      908:                        fs->w = fs->wl->window;
                    909:                        fs->wp = fs->w->active; /* use active pane */
                    910:
                    911:                        cmd_find_log_state(__func__, fs);
                    912:                        return (0);
                    913:                }
                    914:        }
                    915:
                    916:        /*
                    917:         * Don't have a session, or it doesn't have this pane. Try all
                    918:         * sessions.
                    919:         */
                    920:        fs->w = wp->window;
                    921:        if (cmd_find_best_session_with_window(fs) != 0) {
                    922:                if (wp != NULL) {
                    923:                        /*
                    924:                         * The window may have been destroyed but the pane
                    925:                         * still on all_window_panes due to something else
                    926:                         * holding a reference.
                    927:                         */
                    928:                        goto unknown_pane;
                    929:                }
1.49      nicm      930:                cmd_find_clear_state(fs, 0);
1.31      nicm      931:                return (-1);
                    932:        }
1.48      nicm      933:        fs->wl = fs->s->curw;
                    934:        fs->w = fs->wl->window;
                    935:        fs->wp = fs->w->active; /* use active pane */
                    936:
                    937:        cmd_find_log_state(__func__, fs);
1.31      nicm      938:        return (0);
1.48      nicm      939:
                    940: unknown_pane:
                    941:        /*
                    942:         * We're not running in a known pane, but maybe this client has TMUX
                    943:         * in the environment. That'd give us a session.
                    944:         */
                    945:        s = cmd_find_try_TMUX(c);
                    946:        if (s != NULL) {
                    947:                cmd_find_from_session(fs, s);
                    948:                return (0);
                    949:        }
                    950:
                    951:        /* Otherwise we need to guess. */
                    952:        return (cmd_find_from_nothing(fs));
1.31      nicm      953: }
                    954:
1.20      nicm      955: /*
                    956:  * Split target into pieces and resolve for the given type. Fills in the given
                    957:  * state. Returns 0 on success or -1 on error.
                    958:  */
                    959: int
1.48      nicm      960: cmd_find_target(struct cmd_find_state *fs, struct cmdq_item *item,
                    961:     const char *target, enum cmd_find_type type, int flags)
1.1       nicm      962: {
1.20      nicm      963:        struct mouse_event      *m;
1.48      nicm      964:        struct cmd_find_state    current;
1.20      nicm      965:        char                    *colon, *period, *copy = NULL;
1.54      nicm      966:        const char              *session, *window, *pane, *s;
1.44      nicm      967:        int                      window_only = 0, pane_only = 0;
1.1       nicm      968:
1.51      nicm      969:        /* Can fail flag implies quiet. */
                    970:        if (flags & CMD_FIND_CANFAIL)
                    971:                flags |= CMD_FIND_QUIET;
                    972:
1.18      nicm      973:        /* Log the arguments. */
1.54      nicm      974:        if (type == CMD_FIND_PANE)
                    975:                s = "pane";
                    976:        else if (type == CMD_FIND_WINDOW)
                    977:                s = "window";
                    978:        else if (type == CMD_FIND_SESSION)
                    979:                s = "session";
                    980:        else
                    981:                s = "unknown";
1.18      nicm      982:        if (target == NULL)
1.54      nicm      983:                log_debug("%s: target none, type %s", __func__, s);
1.18      nicm      984:        else
1.54      nicm      985:                log_debug("%s: target %s, type %s", __func__, target, s);
1.37      nicm      986:        log_debug("%s: item %p, flags %#x", __func__, item, flags);
1.18      nicm      987:
1.24      nicm      988:        /* Clear new state. */
1.48      nicm      989:        cmd_find_clear_state(fs, flags);
1.24      nicm      990:
1.1       nicm      991:        /* Find current state. */
1.34      nicm      992:        if (server_check_marked() && (flags & CMD_FIND_DEFAULT_MARKED)) {
1.24      nicm      993:                fs->current = &marked_pane;
1.39      nicm      994:                log_debug("%s: current is marked pane", __func__);
1.45      nicm      995:        } else if (cmd_find_valid_state(&item->shared->current)) {
                    996:                fs->current = &item->shared->current;
1.39      nicm      997:                log_debug("%s: current is from queue", __func__);
1.48      nicm      998:        } else if (cmd_find_from_client(&current, item->client) == 0) {
                    999:                fs->current = &current;
                   1000:                log_debug("%s: current is from client", __func__);
1.53      nicm     1001:        } else {
                   1002:                if (~flags & CMD_FIND_QUIET)
                   1003:                        cmdq_error(item, "no current target");
1.50      nicm     1004:                goto error;
1.53      nicm     1005:        }
1.50      nicm     1006:        if (!cmd_find_valid_state(fs->current))
1.34      nicm     1007:                fatalx("invalid current find state");
1.1       nicm     1008:
                   1009:        /* An empty or NULL target is the current. */
                   1010:        if (target == NULL || *target == '\0')
                   1011:                goto current;
                   1012:
                   1013:        /* Mouse target is a plain = or {mouse}. */
                   1014:        if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) {
1.45      nicm     1015:                m = &item->shared->mouse;
1.1       nicm     1016:                switch (type) {
                   1017:                case CMD_FIND_PANE:
1.20      nicm     1018:                        fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl);
1.40      nicm     1019:                        if (fs->wp != NULL && !window_pane_outside(fs->wp))
1.20      nicm     1020:                                fs->w = fs->wl->window;
1.1       nicm     1021:                        break;
                   1022:                case CMD_FIND_WINDOW:
                   1023:                case CMD_FIND_SESSION:
1.20      nicm     1024:                        fs->wl = cmd_mouse_window(m, &fs->s);
                   1025:                        if (fs->wl != NULL) {
                   1026:                                fs->w = fs->wl->window;
                   1027:                                fs->wp = fs->w->active;
1.1       nicm     1028:                        }
                   1029:                        break;
                   1030:                }
1.20      nicm     1031:                if (fs->wp == NULL) {
1.1       nicm     1032:                        if (~flags & CMD_FIND_QUIET)
1.37      nicm     1033:                                cmdq_error(item, "no mouse target");
1.1       nicm     1034:                        goto error;
                   1035:                }
1.18      nicm     1036:                goto found;
1.1       nicm     1037:        }
1.8       nicm     1038:
                   1039:        /* Marked target is a plain ~ or {marked}. */
                   1040:        if (strcmp(target, "~") == 0 || strcmp(target, "{marked}") == 0) {
                   1041:                if (!server_check_marked()) {
                   1042:                        if (~flags & CMD_FIND_QUIET)
1.37      nicm     1043:                                cmdq_error(item, "no marked target");
1.8       nicm     1044:                        goto error;
                   1045:                }
1.23      nicm     1046:                cmd_find_copy_state(fs, &marked_pane);
1.18      nicm     1047:                goto found;
1.8       nicm     1048:        }
1.1       nicm     1049:
                   1050:        /* Find separators if they exist. */
1.8       nicm     1051:        copy = xstrdup(target);
1.1       nicm     1052:        colon = strchr(copy, ':');
                   1053:        if (colon != NULL)
                   1054:                *colon++ = '\0';
                   1055:        if (colon == NULL)
                   1056:                period = strchr(copy, '.');
                   1057:        else
                   1058:                period = strchr(colon, '.');
                   1059:        if (period != NULL)
                   1060:                *period++ = '\0';
                   1061:
                   1062:        /* Set session, window and pane parts. */
                   1063:        session = window = pane = NULL;
                   1064:        if (colon != NULL && period != NULL) {
                   1065:                session = copy;
                   1066:                window = colon;
1.44      nicm     1067:                window_only = 1;
1.1       nicm     1068:                pane = period;
1.44      nicm     1069:                pane_only = 1;
1.1       nicm     1070:        } else if (colon != NULL && period == NULL) {
                   1071:                session = copy;
                   1072:                window = colon;
1.44      nicm     1073:                window_only = 1;
1.1       nicm     1074:        } else if (colon == NULL && period != NULL) {
                   1075:                window = copy;
                   1076:                pane = period;
1.44      nicm     1077:                pane_only = 1;
1.1       nicm     1078:        } else {
                   1079:                if (*copy == '$')
                   1080:                        session = copy;
                   1081:                else if (*copy == '@')
                   1082:                        window = copy;
                   1083:                else if (*copy == '%')
                   1084:                        pane = copy;
                   1085:                else {
                   1086:                        switch (type) {
                   1087:                        case CMD_FIND_SESSION:
                   1088:                                session = copy;
                   1089:                                break;
                   1090:                        case CMD_FIND_WINDOW:
                   1091:                                window = copy;
                   1092:                                break;
                   1093:                        case CMD_FIND_PANE:
                   1094:                                pane = copy;
                   1095:                                break;
                   1096:                        }
                   1097:                }
1.9       nicm     1098:        }
                   1099:
                   1100:        /* Set exact match flags. */
                   1101:        if (session != NULL && *session == '=') {
                   1102:                session++;
1.20      nicm     1103:                fs->flags |= CMD_FIND_EXACT_SESSION;
1.9       nicm     1104:        }
                   1105:        if (window != NULL && *window == '=') {
                   1106:                window++;
1.20      nicm     1107:                fs->flags |= CMD_FIND_EXACT_WINDOW;
1.1       nicm     1108:        }
                   1109:
                   1110:        /* Empty is the same as NULL. */
                   1111:        if (session != NULL && *session == '\0')
                   1112:                session = NULL;
                   1113:        if (window != NULL && *window == '\0')
                   1114:                window = NULL;
                   1115:        if (pane != NULL && *pane == '\0')
                   1116:                pane = NULL;
                   1117:
                   1118:        /* Map though conversion table. */
                   1119:        if (session != NULL)
                   1120:                session = cmd_find_map_table(cmd_find_session_table, session);
                   1121:        if (window != NULL)
                   1122:                window = cmd_find_map_table(cmd_find_window_table, window);
                   1123:        if (pane != NULL)
                   1124:                pane = cmd_find_map_table(cmd_find_pane_table, pane);
                   1125:
1.49      nicm     1126:        log_debug("%s: target %s (flags %#x): session=%s, window=%s, pane=%s",
                   1127:            __func__, target, flags, session == NULL ? "none" : session,
1.1       nicm     1128:            window == NULL ? "none" : window, pane == NULL ? "none" : pane);
                   1129:
                   1130:        /* No pane is allowed if want an index. */
                   1131:        if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) {
                   1132:                if (~flags & CMD_FIND_QUIET)
1.37      nicm     1133:                        cmdq_error(item, "can't specify pane here");
1.1       nicm     1134:                goto error;
                   1135:        }
                   1136:
                   1137:        /* If the session isn't NULL, look it up. */
                   1138:        if (session != NULL) {
                   1139:                /* This will fill in session. */
1.20      nicm     1140:                if (cmd_find_get_session(fs, session) != 0)
1.1       nicm     1141:                        goto no_session;
                   1142:
                   1143:                /* If window and pane are NULL, use that session's current. */
                   1144:                if (window == NULL && pane == NULL) {
1.20      nicm     1145:                        fs->wl = fs->s->curw;
                   1146:                        fs->idx = -1;
                   1147:                        fs->w = fs->wl->window;
                   1148:                        fs->wp = fs->w->active;
1.1       nicm     1149:                        goto found;
                   1150:                }
                   1151:
                   1152:                /* If window is present but pane not, find window in session. */
                   1153:                if (window != NULL && pane == NULL) {
                   1154:                        /* This will fill in winlink and window. */
1.20      nicm     1155:                        if (cmd_find_get_window_with_session(fs, window) != 0)
1.1       nicm     1156:                                goto no_window;
1.21      nicm     1157:                        fs->wp = fs->wl->window->active;
1.1       nicm     1158:                        goto found;
                   1159:                }
                   1160:
                   1161:                /* If pane is present but window not, find pane. */
                   1162:                if (window == NULL && pane != NULL) {
                   1163:                        /* This will fill in winlink and window and pane. */
1.20      nicm     1164:                        if (cmd_find_get_pane_with_session(fs, pane) != 0)
1.1       nicm     1165:                                goto no_pane;
                   1166:                        goto found;
                   1167:                }
                   1168:
                   1169:                /*
                   1170:                 * If window and pane are present, find both in session. This
                   1171:                 * will fill in winlink and window.
                   1172:                 */
1.20      nicm     1173:                if (cmd_find_get_window_with_session(fs, window) != 0)
1.1       nicm     1174:                        goto no_window;
                   1175:                /* This will fill in pane. */
1.20      nicm     1176:                if (cmd_find_get_pane_with_window(fs, pane) != 0)
1.1       nicm     1177:                        goto no_pane;
                   1178:                goto found;
                   1179:        }
                   1180:
                   1181:        /* No session. If window and pane, try them. */
                   1182:        if (window != NULL && pane != NULL) {
                   1183:                /* This will fill in session, winlink and window. */
1.44      nicm     1184:                if (cmd_find_get_window(fs, window, window_only) != 0)
1.1       nicm     1185:                        goto no_window;
                   1186:                /* This will fill in pane. */
1.20      nicm     1187:                if (cmd_find_get_pane_with_window(fs, pane) != 0)
1.1       nicm     1188:                        goto no_pane;
                   1189:                goto found;
                   1190:        }
                   1191:
                   1192:        /* If just window is present, try it. */
                   1193:        if (window != NULL && pane == NULL) {
                   1194:                /* This will fill in session, winlink and window. */
1.44      nicm     1195:                if (cmd_find_get_window(fs, window, window_only) != 0)
1.1       nicm     1196:                        goto no_window;
1.21      nicm     1197:                fs->wp = fs->wl->window->active;
1.1       nicm     1198:                goto found;
                   1199:        }
                   1200:
                   1201:        /* If just pane is present, try it. */
                   1202:        if (window == NULL && pane != NULL) {
                   1203:                /* This will fill in session, winlink, window and pane. */
1.44      nicm     1204:                if (cmd_find_get_pane(fs, pane, pane_only) != 0)
1.1       nicm     1205:                        goto no_pane;
                   1206:                goto found;
                   1207:        }
                   1208:
                   1209: current:
1.20      nicm     1210:        /* Use the current session. */
1.24      nicm     1211:        cmd_find_copy_state(fs, fs->current);
1.1       nicm     1212:        if (flags & CMD_FIND_WINDOW_INDEX)
1.24      nicm     1213:                fs->idx = -1;
1.20      nicm     1214:        goto found;
1.1       nicm     1215:
                   1216: error:
1.20      nicm     1217:        fs->current = NULL;
1.39      nicm     1218:        log_debug("%s: error", __func__);
1.20      nicm     1219:
1.1       nicm     1220:        free(copy);
1.51      nicm     1221:        if (flags & CMD_FIND_CANFAIL)
                   1222:                return (0);
1.20      nicm     1223:        return (-1);
1.1       nicm     1224:
                   1225: found:
1.20      nicm     1226:        fs->current = NULL;
                   1227:        cmd_find_log_state(__func__, fs);
                   1228:
1.1       nicm     1229:        free(copy);
1.20      nicm     1230:        return (0);
1.1       nicm     1231:
                   1232: no_session:
                   1233:        if (~flags & CMD_FIND_QUIET)
1.37      nicm     1234:                cmdq_error(item, "can't find session %s", session);
1.1       nicm     1235:        goto error;
                   1236:
                   1237: no_window:
                   1238:        if (~flags & CMD_FIND_QUIET)
1.37      nicm     1239:                cmdq_error(item, "can't find window %s", window);
1.1       nicm     1240:        goto error;
                   1241:
                   1242: no_pane:
                   1243:        if (~flags & CMD_FIND_QUIET)
1.37      nicm     1244:                cmdq_error(item, "can't find pane %s", pane);
1.1       nicm     1245:        goto error;
                   1246: }
                   1247:
1.55    ! nicm     1248: /* Find the current client. */
        !          1249: static struct client *
        !          1250: cmd_find_current_client(struct cmdq_item *item, int quiet)
        !          1251: {
        !          1252:        struct client           *c;
        !          1253:        struct session          *s;
        !          1254:        struct window_pane      *wp;
        !          1255:        struct cmd_find_state    fs;
        !          1256:
        !          1257:        if (item->client != NULL && item->client->session != NULL)
        !          1258:                return (item->client);
        !          1259:
        !          1260:        c = NULL;
        !          1261:        if ((wp = cmd_find_inside_pane(item->client)) != NULL) {
        !          1262:                cmd_find_clear_state(&fs, CMD_FIND_QUIET);
        !          1263:                fs.w = wp->window;
        !          1264:                if (cmd_find_best_session_with_window(&fs) == 0)
        !          1265:                        c = cmd_find_best_client(fs.s);
        !          1266:        } else {
        !          1267:                s = cmd_find_best_session(NULL, 0, CMD_FIND_QUIET);
        !          1268:                if (s != NULL)
        !          1269:                        c = cmd_find_best_client(s);
        !          1270:        }
        !          1271:        if (c == NULL && !quiet)
        !          1272:                cmdq_error(item, "no current client");
        !          1273:        log_debug("%s: no target, return %p", __func__, c);
        !          1274:        return (c);
        !          1275: }
        !          1276:
1.1       nicm     1277: /* Find the target client or report an error and return NULL. */
                   1278: struct client *
1.37      nicm     1279: cmd_find_client(struct cmdq_item *item, const char *target, int quiet)
1.1       nicm     1280: {
                   1281:        struct client   *c;
                   1282:        char            *copy;
                   1283:        size_t           size;
                   1284:
                   1285:        /* A NULL argument means the current client. */
1.55    ! nicm     1286:        if (target == NULL)
        !          1287:                return (cmd_find_current_client(item, quiet));
1.1       nicm     1288:        copy = xstrdup(target);
                   1289:
                   1290:        /* Trim a single trailing colon if any. */
                   1291:        size = strlen(copy);
                   1292:        if (size != 0 && copy[size - 1] == ':')
                   1293:                copy[size - 1] = '\0';
                   1294:
1.43      nicm     1295:        /* Check name and path of each client. */
1.1       nicm     1296:        TAILQ_FOREACH(c, &clients, entry) {
1.43      nicm     1297:                if (c->session == NULL)
1.1       nicm     1298:                        continue;
1.43      nicm     1299:                if (strcmp(copy, c->name) == 0)
                   1300:                        break;
1.1       nicm     1301:
1.43      nicm     1302:                if (*c->ttyname == '\0')
                   1303:                        continue;
                   1304:                if (strcmp(copy, c->ttyname) == 0)
1.1       nicm     1305:                        break;
1.43      nicm     1306:                if (strncmp(c->ttyname, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
1.1       nicm     1307:                        continue;
1.43      nicm     1308:                if (strcmp(copy, c->ttyname + (sizeof _PATH_DEV) - 1) == 0)
1.1       nicm     1309:                        break;
                   1310:        }
                   1311:
                   1312:        /* If no client found, report an error. */
                   1313:        if (c == NULL && !quiet)
1.37      nicm     1314:                cmdq_error(item, "can't find client %s", copy);
1.1       nicm     1315:
                   1316:        free(copy);
1.16      nicm     1317:        log_debug("%s: target %s, return %p", __func__, target, c);
1.1       nicm     1318:        return (c);
                   1319: }