/* $OpenBSD: format.c,v 1.153 2018/03/08 08:09:10 nicm Exp $ */ /* * Copyright (c) 2011 Nicholas Marriott * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include "tmux.h" /* * Build a list of key-value pairs and use them to expand #{key} entries in a * string. */ struct format_entry; typedef void (*format_cb)(struct format_tree *, struct format_entry *); static char *format_job_get(struct format_tree *, const char *); static void format_job_timer(int, short, void *); static char *format_find(struct format_tree *, const char *, int); static void format_add_cb(struct format_tree *, const char *, format_cb); static void format_add_tv(struct format_tree *, const char *, struct timeval *); static int format_replace(struct format_tree *, const char *, size_t, char **, size_t *, size_t *); static void format_defaults_session(struct format_tree *, struct session *); static void format_defaults_client(struct format_tree *, struct client *); static void format_defaults_winlink(struct format_tree *, struct winlink *); /* Entry in format job tree. */ struct format_job { struct client *client; u_int tag; const char *cmd; const char *expanded; time_t last; char *out; int updated; struct job *job; int status; RB_ENTRY(format_job) entry; }; /* Format job tree. */ static struct event format_job_event; static int format_job_cmp(struct format_job *, struct format_job *); static RB_HEAD(format_job_tree, format_job) format_jobs = RB_INITIALIZER(); RB_GENERATE_STATIC(format_job_tree, format_job, entry, format_job_cmp); /* Format job tree comparison function. */ static int format_job_cmp(struct format_job *fj1, struct format_job *fj2) { if (fj1->tag < fj2->tag) return (-1); if (fj1->tag > fj2->tag) return (1); return (strcmp(fj1->cmd, fj2->cmd)); } /* Format modifiers. */ #define FORMAT_TIMESTRING 0x1 #define FORMAT_BASENAME 0x2 #define FORMAT_DIRNAME 0x4 #define FORMAT_SUBSTITUTE 0x8 /* Entry in format tree. */ struct format_entry { char *key; char *value; time_t t; format_cb cb; RB_ENTRY(format_entry) entry; }; /* Format entry tree. */ struct format_tree { struct window *w; struct winlink *wl; struct session *s; struct window_pane *wp; struct client *client; u_int tag; int flags; RB_HEAD(format_entry_tree, format_entry) tree; }; static int format_entry_cmp(struct format_entry *, struct format_entry *); RB_GENERATE_STATIC(format_entry_tree, format_entry, entry, format_entry_cmp); /* Format entry tree comparison function. */ static int format_entry_cmp(struct format_entry *fe1, struct format_entry *fe2) { return (strcmp(fe1->key, fe2->key)); } /* Single-character uppercase aliases. */ static const char *format_upper[] = { NULL, /* A */ NULL, /* B */ NULL, /* C */ "pane_id", /* D */ NULL, /* E */ "window_flags", /* F */ NULL, /* G */ "host", /* H */ "window_index", /* I */ NULL, /* J */ NULL, /* K */ NULL, /* L */ NULL, /* M */ NULL, /* N */ NULL, /* O */ "pane_index", /* P */ NULL, /* Q */ NULL, /* R */ "session_name", /* S */ "pane_title", /* T */ NULL, /* U */ NULL, /* V */ "window_name", /* W */ NULL, /* X */ NULL, /* Y */ NULL /* Z */ }; /* Single-character lowercase aliases. */ static const char *format_lower[] = { NULL, /* a */ NULL, /* b */ NULL, /* c */ NULL, /* d */ NULL, /* e */ NULL, /* f */ NULL, /* g */ "host_short", /* h */ NULL, /* i */ NULL, /* j */ NULL, /* k */ NULL, /* l */ NULL, /* m */ NULL, /* n */ NULL, /* o */ NULL, /* p */ NULL, /* q */ NULL, /* r */ NULL, /* s */ NULL, /* t */ NULL, /* u */ NULL, /* v */ NULL, /* w */ NULL, /* x */ NULL, /* y */ NULL /* z */ }; /* Format job update callback. */ static void format_job_update(struct job *job) { struct format_job *fj = job->data; struct evbuffer *evb = job->event->input; char *line = NULL, *next; time_t t; while ((next = evbuffer_readline(evb)) != NULL) { free(line); line = next; } if (line == NULL) return; fj->updated = 1; free(fj->out); fj->out = line; log_debug("%s: %p %s: %s", __func__, fj, fj->cmd, fj->out); t = time(NULL); if (fj->status && fj->last != t) { if (fj->client != NULL) server_status_client(fj->client); fj->last = t; } } /* Format job complete callback. */ static void format_job_complete(struct job *job) { struct format_job *fj = job->data; char *line, *buf; size_t len; fj->job = NULL; buf = NULL; if ((line = evbuffer_readline(job->event->input)) == NULL) { len = EVBUFFER_LENGTH(job->event->input); buf = xmalloc(len + 1); if (len != 0) memcpy(buf, EVBUFFER_DATA(job->event->input), len); buf[len] = '\0'; } else buf = line; log_debug("%s: %p %s: %s", __func__, fj, fj->cmd, buf); if (*buf != '\0' || !fj->updated) { free(fj->out); fj->out = buf; } else free(buf); if (fj->status) { if (fj->client != NULL) server_status_client(fj->client); fj->status = 0; } } /* Find a job. */ static char * format_job_get(struct format_tree *ft, const char *cmd) { struct format_job_tree *jobs; struct format_job fj0, *fj; time_t t; char *expanded; int force; if (ft->client == NULL) jobs = &format_jobs; else if (ft->client->jobs != NULL) jobs = ft->client->jobs; else { jobs = ft->client->jobs = xmalloc(sizeof *ft->client->jobs); RB_INIT(jobs); } fj0.tag = ft->tag; fj0.cmd = cmd; if ((fj = RB_FIND(format_job_tree, jobs, &fj0)) == NULL) { fj = xcalloc(1, sizeof *fj); fj->client = ft->client; fj->tag = ft->tag; fj->cmd = xstrdup(cmd); fj->expanded = NULL; xasprintf(&fj->out, "<'%s' not ready>", fj->cmd); RB_INSERT(format_job_tree, jobs, fj); } expanded = format_expand(ft, cmd); if (fj->expanded == NULL || strcmp(expanded, fj->expanded) != 0) { free((void *)fj->expanded); fj->expanded = xstrdup(expanded); force = 1; } else force = (ft->flags & FORMAT_FORCE); t = time(NULL); if (fj->job == NULL && (force || fj->last != t)) { fj->job = job_run(expanded, NULL, NULL, format_job_update, format_job_complete, NULL, fj, JOB_NOWAIT); if (fj->job == NULL) { free(fj->out); xasprintf(&fj->out, "<'%s' didn't start>", fj->cmd); } fj->last = t; fj->updated = 0; } if (ft->flags & FORMAT_STATUS) fj->status = 1; free(expanded); return (format_expand(ft, fj->out)); } /* Remove old jobs. */ static void format_job_tidy(struct format_job_tree *jobs, int force) { struct format_job *fj, *fj1; time_t now; now = time(NULL); RB_FOREACH_SAFE(fj, format_job_tree, jobs, fj1) { if (!force && (fj->last > now || now - fj->last < 3600)) continue; RB_REMOVE(format_job_tree, jobs, fj); log_debug("%s: %s", __func__, fj->cmd); if (fj->job != NULL) job_free(fj->job); free((void *)fj->expanded); free((void *)fj->cmd); free(fj->out); free(fj); } } /* Remove old jobs for client. */ void format_lost_client(struct client *c) { if (c->jobs != NULL) format_job_tidy(c->jobs, 1); free(c->jobs); } /* Remove old jobs periodically. */ static void format_job_timer(__unused int fd, __unused short events, __unused void *arg) { struct client *c; struct timeval tv = { .tv_sec = 60 }; format_job_tidy(&format_jobs, 0); TAILQ_FOREACH(c, &clients, entry) { if (c->jobs != NULL) format_job_tidy(c->jobs, 0); } evtimer_del(&format_job_event); evtimer_add(&format_job_event, &tv); } /* Callback for host. */ static void format_cb_host(__unused struct format_tree *ft, struct format_entry *fe) { char host[HOST_NAME_MAX + 1]; if (gethostname(host, sizeof host) != 0) fe->value = xstrdup(""); else fe->value = xstrdup(host); } /* Callback for host_short. */ static void format_cb_host_short(__unused struct format_tree *ft, struct format_entry *fe) { char host[HOST_NAME_MAX + 1], *cp; if (gethostname(host, sizeof host) != 0) fe->value = xstrdup(""); else { if ((cp = strchr(host, '.')) != NULL) *cp = '\0'; fe->value = xstrdup(host); } } /* Callback for pid. */ static void format_cb_pid(__unused struct format_tree *ft, struct format_entry *fe) { xasprintf(&fe->value, "%ld", (long)getpid()); } /* Callback for session_alerts. */ static void format_cb_session_alerts(struct format_tree *ft, struct format_entry *fe) { struct session *s = ft->s; struct winlink *wl; char alerts[1024], tmp[16]; if (s == NULL) return; *alerts = '\0'; RB_FOREACH(wl, winlinks, &s->windows) { if ((wl->flags & WINLINK_ALERTFLAGS) == 0) continue; xsnprintf(tmp, sizeof tmp, "%u", wl->idx); if (*alerts != '\0') strlcat(alerts, ",", sizeof alerts); strlcat(alerts, tmp, sizeof alerts); if (wl->flags & WINLINK_ACTIVITY) strlcat(alerts, "#", sizeof alerts); if (wl->flags & WINLINK_BELL) strlcat(alerts, "!", sizeof alerts); if (wl->flags & WINLINK_SILENCE) strlcat(alerts, "~", sizeof alerts); } fe->value = xstrdup(alerts); } /* Callback for session_stack. */ static void format_cb_session_stack(struct format_tree *ft, struct format_entry *fe) { struct session *s = ft->s; struct winlink *wl; char result[1024], tmp[16]; if (s == NULL) return; xsnprintf(result, sizeof result, "%u", s->curw->idx); TAILQ_FOREACH(wl, &s->lastw, sentry) { xsnprintf(tmp, sizeof tmp, "%u", wl->idx); if (*result != '\0') strlcat(result, ",", sizeof result); strlcat(result, tmp, sizeof result); } fe->value = xstrdup(result); } /* Callback for window_stack_index. */ static void format_cb_window_stack_index(struct format_tree *ft, struct format_entry *fe) { struct session *s = ft->wl->session; struct winlink *wl; u_int idx; idx = 0; TAILQ_FOREACH(wl, &s->lastw, sentry) { idx++; if (wl == ft->wl) break; } if (wl != NULL) xasprintf(&fe->value, "%u", idx); else fe->value = xstrdup("0"); } /* Callback for window_layout. */ static void format_cb_window_layout(struct format_tree *ft, struct format_entry *fe) { struct window *w = ft->w; if (w == NULL) return; if (w->saved_layout_root != NULL) fe->value = layout_dump(w->saved_layout_root); else fe->value = layout_dump(w->layout_root); } /* Callback for window_visible_layout. */ static void format_cb_window_visible_layout(struct format_tree *ft, struct format_entry *fe) { struct window *w = ft->w; if (w == NULL) return; fe->value = layout_dump(w->layout_root); } /* Callback for pane_start_command. */ static void format_cb_start_command(struct format_tree *ft, struct format_entry *fe) { struct window_pane *wp = ft->wp; if (wp == NULL) return; fe->value = cmd_stringify_argv(wp->argc, wp->argv); } /* Callback for pane_current_command. */ static void format_cb_current_command(struct format_tree *ft, struct format_entry *fe) { struct window_pane *wp = ft->wp; char *cmd; if (wp == NULL) return; cmd = get_proc_name(wp->fd, wp->tty); if (cmd == NULL || *cmd == '\0') { free(cmd); cmd = cmd_stringify_argv(wp->argc, wp->argv); if (cmd == NULL || *cmd == '\0') { free(cmd); cmd = xstrdup(wp->shell); } } fe->value = parse_window_name(cmd); free(cmd); } /* Callback for history_bytes. */ static void format_cb_history_bytes(struct format_tree *ft, struct format_entry *fe) { struct window_pane *wp = ft->wp; struct grid *gd; struct grid_line *gl; unsigned long long size; u_int i; if (wp == NULL) return; gd = wp->base.grid; size = 0; for (i = 0; i < gd->hsize; i++) { gl = &gd->linedata[i]; size += gl->cellsize * sizeof *gl->celldata; size += gl->extdsize * sizeof *gl->extddata; } size += gd->hsize * sizeof *gd->linedata; xasprintf(&fe->value, "%llu", size); } /* Callback for pane_tabs. */ static void format_cb_pane_tabs(struct format_tree *ft, struct format_entry *fe) { struct window_pane *wp = ft->wp; struct evbuffer *buffer; u_int i; int size; if (wp == NULL) return; buffer = evbuffer_new(); for (i = 0; i < wp->base.grid->sx; i++) { if (!bit_test(wp->base.tabs, i)) continue; if (EVBUFFER_LENGTH(buffer) > 0) evbuffer_add(buffer, ",", 1); evbuffer_add_printf(buffer, "%u", i); } if ((size = EVBUFFER_LENGTH(buffer)) != 0) xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer)); evbuffer_free(buffer); } /* Callback for session_group_list. */ static void format_cb_session_group_list(struct format_tree *ft, struct format_entry *fe) { struct session *s = ft->s; struct session_group *sg; struct session *loop; struct evbuffer *buffer; int size; if (s == NULL) return; sg = session_group_contains(s); if (sg == NULL) return; buffer = evbuffer_new(); TAILQ_FOREACH(loop, &sg->sessions, gentry) { if (EVBUFFER_LENGTH(buffer) > 0) evbuffer_add(buffer, ",", 1); evbuffer_add_printf(buffer, "%s", loop->name); } if ((size = EVBUFFER_LENGTH(buffer)) != 0) xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer)); evbuffer_free(buffer); } /* Merge a format tree. */ static void format_merge(struct format_tree *ft, struct format_tree *from) { struct format_entry *fe; RB_FOREACH(fe, format_entry_tree, &from->tree) { if (fe->value != NULL) format_add(ft, fe->key, "%s", fe->value); } } /* Create a new tree. */ struct format_tree * format_create(struct client *c, struct cmdq_item *item, int tag, int flags) { struct format_tree *ft; if (!event_initialized(&format_job_event)) { evtimer_set(&format_job_event, format_job_timer, NULL); format_job_timer(-1, 0, NULL); } ft = xcalloc(1, sizeof *ft); RB_INIT(&ft->tree); if (c != NULL) { ft->client = c; ft->client->references++; } ft->tag = tag; ft->flags = flags; format_add_cb(ft, "host", format_cb_host); format_add_cb(ft, "host_short", format_cb_host_short); format_add_cb(ft, "pid", format_cb_pid); format_add(ft, "socket_path", "%s", socket_path); format_add_tv(ft, "start_time", &start_time); if (item != NULL) { if (item->cmd != NULL) format_add(ft, "command", "%s", item->cmd->entry->name); if (item->shared != NULL && item->shared->formats != NULL) format_merge(ft, item->shared->formats); } return (ft); } /* Free a tree. */ void format_free(struct format_tree *ft) { struct format_entry *fe, *fe1; RB_FOREACH_SAFE(fe, format_entry_tree, &ft->tree, fe1) { RB_REMOVE(format_entry_tree, &ft->tree, fe); free(fe->value); free(fe->key); free(fe); } if (ft->client != NULL) server_client_unref(ft->client); free(ft); } /* Add a key-value pair. */ void format_add(struct format_tree *ft, const char *key, const char *fmt, ...) { struct format_entry *fe; struct format_entry *fe_now; va_list ap; fe = xmalloc(sizeof *fe); fe->key = xstrdup(key); fe_now = RB_INSERT(format_entry_tree, &ft->tree, fe); if (fe_now != NULL) { free(fe->key); free(fe); free(fe_now->value); fe = fe_now; } fe->cb = NULL; fe->t = 0; va_start(ap, fmt); xvasprintf(&fe->value, fmt, ap); va_end(ap); } /* Add a key and time. */ static void format_add_tv(struct format_tree *ft, const char *key, struct timeval *tv) { struct format_entry *fe; struct format_entry *fe_now; fe = xmalloc(sizeof *fe); fe->key = xstrdup(key); fe_now = RB_INSERT(format_entry_tree, &ft->tree, fe); if (fe_now != NULL) { free(fe->key); free(fe); free(fe_now->value); fe = fe_now; } fe->cb = NULL; fe->t = tv->tv_sec; fe->value = NULL; } /* Add a key and function. */ static void format_add_cb(struct format_tree *ft, const char *key, format_cb cb) { struct format_entry *fe; struct format_entry *fe_now; fe = xmalloc(sizeof *fe); fe->key = xstrdup(key); fe_now = RB_INSERT(format_entry_tree, &ft->tree, fe); if (fe_now != NULL) { free(fe->key); free(fe); free(fe_now->value); fe = fe_now; } fe->cb = cb; fe->t = 0; fe->value = NULL; } /* Find a format entry. */ static char * format_find(struct format_tree *ft, const char *key, int modifiers) { struct format_entry *fe, fe_find; struct environ_entry *envent; static char s[64]; struct options_entry *o; const char *found; int idx; char *copy, *saved; if (~modifiers & FORMAT_TIMESTRING) { o = options_parse_get(global_options, key, &idx, 0); if (o == NULL && ft->w != NULL) o = options_parse_get(ft->w->options, key, &idx, 0); if (o == NULL) o = options_parse_get(global_w_options, key, &idx, 0); if (o == NULL && ft->s != NULL) o = options_parse_get(ft->s->options, key, &idx, 0); if (o == NULL) o = options_parse_get(global_s_options, key, &idx, 0); if (o != NULL) { found = options_tostring(o, idx, 1); goto found; } } found = NULL; fe_find.key = (char *) key; fe = RB_FIND(format_entry_tree, &ft->tree, &fe_find); if (fe != NULL) { if (modifiers & FORMAT_TIMESTRING) { if (fe->t == 0) return (NULL); ctime_r(&fe->t, s); s[strcspn(s, "\n")] = '\0'; found = s; goto found; } if (fe->t != 0) { xsnprintf(s, sizeof s, "%lld", (long long)fe->t); found = s; goto found; } if (fe->value == NULL && fe->cb != NULL) { fe->cb(ft, fe); if (fe->value == NULL) fe->value = xstrdup(""); } found = fe->value; goto found; } if (~modifiers & FORMAT_TIMESTRING) { envent = NULL; if (ft->s != NULL) envent = environ_find(ft->s->environ, key); if (envent == NULL) envent = environ_find(global_environ, key); if (envent != NULL) { found = envent->value; goto found; } } return (NULL); found: if (found == NULL) return (NULL); copy = xstrdup(found); if (modifiers & FORMAT_BASENAME) { saved = copy; copy = xstrdup(basename(saved)); free(saved); } if (modifiers & FORMAT_DIRNAME) { saved = copy; copy = xstrdup(dirname(saved)); free(saved); } return (copy); } /* Skip until comma. */ static char * format_skip(char *s) { int brackets = 0; for (; *s != '\0'; s++) { if (*s == '{') brackets++; if (*s == '}') brackets--; if (*s == ',' && brackets == 0) break; } if (*s == '\0') return (NULL); return (s); } /* Return left and right alternatives separated by commas. */ static int format_choose(char *s, char **left, char **right) { char *cp; cp = format_skip(s); if (cp == NULL) return (-1); *cp = '\0'; *left = s; *right = cp + 1; return (0); } /* Is this true? */ int format_true(const char *s) { if (s != NULL && *s != '\0' && (s[0] != '0' || s[1] != '\0')) return (1); return (0); } /* Replace a key. */ static int format_replace(struct format_tree *ft, const char *key, size_t keylen, char **buf, size_t *len, size_t *off) { struct window_pane *wp = ft->wp; char *copy, *copy0, *endptr, *ptr, *found, *new; char *value, *from = NULL, *to = NULL, *left, *right; size_t valuelen, newlen, fromlen, tolen, used; long limit = 0; int modifiers = 0, compare = 0, search = 0; /* Make a copy of the key. */ copy0 = copy = xmalloc(keylen + 1); memcpy(copy, key, keylen); copy[keylen] = '\0'; /* Is there a length limit or whatnot? */ switch (copy[0]) { case 'm': if (copy[1] != ':') break; compare = -2; copy += 2; break; case 'C': if (copy[1] != ':') break; search = 1; copy += 2; break; case '|': if (copy[1] != '|' || copy[2] != ':') break; compare = -3; copy += 3; break; case '&': if (copy[1] != '&' || copy[2] != ':') break; compare = -4; copy += 3; break; case '!': if (copy[1] == '=' && copy[2] == ':') { compare = -1; copy += 3; break; } break; case '=': if (copy[1] == '=' && copy[2] == ':') { compare = 1; copy += 3; break; } errno = 0; limit = strtol(copy + 1, &endptr, 10); if (errno == ERANGE && (limit == LONG_MIN || limit == LONG_MAX)) break; if (*endptr != ':') break; copy = endptr + 1; break; case 'b': if (copy[1] != ':') break; modifiers |= FORMAT_BASENAME; copy += 2; break; case 'd': if (copy[1] != ':') break; modifiers |= FORMAT_DIRNAME; copy += 2; break; case 't': if (copy[1] != ':') break; modifiers |= FORMAT_TIMESTRING; copy += 2; break; case 's': if (copy[1] != '/') break; from = copy + 2; for (copy = from; *copy != '\0' && *copy != '/'; copy++) /* nothing */; if (copy[0] != '/' || copy == from) { copy = copy0; break; } copy[0] = '\0'; to = copy + 1; for (copy = to; *copy != '\0' && *copy != '/'; copy++) /* nothing */; if (copy[0] != '/' || copy[1] != ':') { copy = copy0; break; } copy[0] = '\0'; modifiers |= FORMAT_SUBSTITUTE; copy += 2; break; } /* Is this a comparison or a conditional? */ if (search) { /* Search in pane. */ if (wp == NULL) value = xstrdup("0"); else xasprintf(&value, "%u", window_pane_search(wp, copy)); } else if (compare != 0) { /* Comparison: compare comma-separated left and right. */ if (format_choose(copy, &left, &right) != 0) goto fail; left = format_expand(ft, left); right = format_expand(ft, right); if (compare == -3 && (format_true(left) || format_true(right))) value = xstrdup("1"); else if (compare == -4 && (format_true(left) && format_true(right))) value = xstrdup("1"); else if (compare == 1 && strcmp(left, right) == 0) value = xstrdup("1"); else if (compare == -1 && strcmp(left, right) != 0) value = xstrdup("1"); else if (compare == -2 && fnmatch(left, right, 0) == 0) value = xstrdup("1"); else value = xstrdup("0"); free(right); free(left); } else if (*copy == '?') { /* Conditional: check first and choose second or third. */ ptr = format_skip(copy); if (ptr == NULL) goto fail; *ptr = '\0'; found = format_find(ft, copy + 1, modifiers); if (found == NULL) found = format_expand(ft, copy + 1); if (format_choose(ptr + 1, &left, &right) != 0) goto fail; if (format_true(found)) value = format_expand(ft, left); else value = format_expand(ft, right); free(found); } else { /* Neither: look up directly. */ value = format_find(ft, copy, modifiers); if (value == NULL) value = xstrdup(""); } /* Perform substitution if any. */ if (modifiers & FORMAT_SUBSTITUTE) { fromlen = strlen(from); tolen = strlen(to); newlen = strlen(value) + 1; copy = new = xmalloc(newlen); for (ptr = value; *ptr != '\0'; /* nothing */) { if (strncmp(ptr, from, fromlen) != 0) { *new++ = *ptr++; continue; } used = new - copy; newlen += tolen; copy = xrealloc(copy, newlen); new = copy + used; memcpy(new, to, tolen); new += tolen; ptr += fromlen; } *new = '\0'; free(value); value = copy; } /* Truncate the value if needed. */ if (limit > 0) { new = utf8_trimcstr(value, limit); free(value); value = new; } else if (limit < 0) { new = utf8_rtrimcstr(value, -limit); free(value); value = new; } /* Expand the buffer and copy in the value. */ valuelen = strlen(value); while (*len - *off < valuelen + 1) { *buf = xreallocarray(*buf, 2, *len); *len *= 2; } memcpy(*buf + *off, value, valuelen); *off += valuelen; free(value); free(copy0); return (0); fail: free(copy0); return (-1); } /* Expand keys in a template, passing through strftime first. */ char * format_expand_time(struct format_tree *ft, const char *fmt, time_t t) { struct tm *tm; char s[2048]; if (fmt == NULL || *fmt == '\0') return (xstrdup("")); tm = localtime(&t); if (strftime(s, sizeof s, fmt, tm) == 0) return (xstrdup("")); return (format_expand(ft, s)); } /* Expand keys in a template. */ char * format_expand(struct format_tree *ft, const char *fmt) { char *buf, *out, *name; const char *ptr, *s, *saved = fmt; size_t off, len, n, outlen; int ch, brackets; if (fmt == NULL) return (xstrdup("")); len = 64; buf = xmalloc(len); off = 0; while (*fmt != '\0') { if (*fmt != '#') { while (len - off < 2) { buf = xreallocarray(buf, 2, len); len *= 2; } buf[off++] = *fmt++; continue; } fmt++; ch = (u_char) *fmt++; switch (ch) { case '(': brackets = 1; for (ptr = fmt; *ptr != '\0'; ptr++) { if (*ptr == '(') brackets++; if (*ptr == ')' && --brackets == 0) break; } if (*ptr != ')' || brackets != 0) break; n = ptr - fmt; if (ft->flags & FORMAT_NOJOBS) out = xstrdup(""); else { name = xstrndup(fmt, n); out = format_job_get(ft, name); free(name); } outlen = strlen(out); while (len - off < outlen + 1) { buf = xreallocarray(buf, 2, len); len *= 2; } memcpy(buf + off, out, outlen); off += outlen; free(out); fmt += n + 1; continue; case '{': brackets = 1; for (ptr = fmt; *ptr != '\0'; ptr++) { if (*ptr == '{') brackets++; if (*ptr == '}' && --brackets == 0) break; } if (*ptr != '}' || brackets != 0) break; n = ptr - fmt; if (format_replace(ft, fmt, n, &buf, &len, &off) != 0) break; fmt += n + 1; continue; case '#': while (len - off < 2) { buf = xreallocarray(buf, 2, len); len *= 2; } buf[off++] = '#'; continue; default: s = NULL; if (ch >= 'A' && ch <= 'Z') s = format_upper[ch - 'A']; else if (ch >= 'a' && ch <= 'z') s = format_lower[ch - 'a']; if (s == NULL) { while (len - off < 3) { buf = xreallocarray(buf, 2, len); len *= 2; } buf[off++] = '#'; buf[off++] = ch; continue; } n = strlen(s); if (format_replace(ft, s, n, &buf, &len, &off) != 0) break; continue; } break; } buf[off] = '\0'; log_debug("format '%s' -> '%s'", saved, buf); return (buf); } /* Expand a single string. */ char * format_single(struct cmdq_item *item, const char *fmt, struct client *c, struct session *s, struct winlink *wl, struct window_pane *wp) { struct format_tree *ft; char *expanded; if (item != NULL) ft = format_create(item->client, item, FORMAT_NONE, 0); else ft = format_create(NULL, item, FORMAT_NONE, 0); format_defaults(ft, c, s, wl, wp); expanded = format_expand(ft, fmt); format_free(ft); return (expanded); } /* Set defaults for any of arguments that are not NULL. */ void format_defaults(struct format_tree *ft, struct client *c, struct session *s, struct winlink *wl, struct window_pane *wp) { format_add(ft, "session_format", "%d", s != NULL); format_add(ft, "window_format", "%d", wl != NULL); format_add(ft, "pane_format", "%d", wp != NULL); if (s == NULL && c != NULL) s = c->session; if (wl == NULL && s != NULL) wl = s->curw; if (wp == NULL && wl != NULL) wp = wl->window->active; if (c != NULL) format_defaults_client(ft, c); if (s != NULL) format_defaults_session(ft, s); if (wl != NULL) format_defaults_winlink(ft, wl); if (wp != NULL) format_defaults_pane(ft, wp); } /* Set default format keys for a session. */ static void format_defaults_session(struct format_tree *ft, struct session *s) { struct session_group *sg; ft->s = s; format_add(ft, "session_name", "%s", s->name); format_add(ft, "session_windows", "%u", winlink_count(&s->windows)); format_add(ft, "session_width", "%u", s->sx); format_add(ft, "session_height", "%u", s->sy); format_add(ft, "session_id", "$%u", s->id); sg = session_group_contains(s); format_add(ft, "session_grouped", "%d", sg != NULL); if (sg != NULL) { format_add(ft, "session_group", "%s", sg->name); format_add(ft, "session_group_size", "%u", session_group_count (sg)); format_add_cb(ft, "session_group_list", format_cb_session_group_list); } format_add_tv(ft, "session_created", &s->creation_time); format_add_tv(ft, "session_last_attached", &s->last_attached_time); format_add_tv(ft, "session_activity", &s->activity_time); format_add(ft, "session_attached", "%u", s->attached); format_add(ft, "session_many_attached", "%d", s->attached > 1); format_add_cb(ft, "session_alerts", format_cb_session_alerts); format_add_cb(ft, "session_stack", format_cb_session_stack); } /* Set default format keys for a client. */ static void format_defaults_client(struct format_tree *ft, struct client *c) { struct session *s; const char *name; struct tty *tty = &c->tty; const char *types[] = TTY_TYPES; if (ft->s == NULL) ft->s = c->session; format_add(ft, "client_name", "%s", c->name); format_add(ft, "client_pid", "%ld", (long) c->pid); format_add(ft, "client_height", "%u", tty->sy); format_add(ft, "client_width", "%u", tty->sx); format_add(ft, "client_tty", "%s", c->ttyname); format_add(ft, "client_control_mode", "%d", !!(c->flags & CLIENT_CONTROL)); if (tty->term_name != NULL) format_add(ft, "client_termname", "%s", tty->term_name); if (tty->term_name != NULL) format_add(ft, "client_termtype", "%s", types[tty->term_type]); format_add_tv(ft, "client_created", &c->creation_time); format_add_tv(ft, "client_activity", &c->activity_time); format_add(ft, "client_written", "%zu", c->written); format_add(ft, "client_discarded", "%zu", c->discarded); name = server_client_get_key_table(c); if (strcmp(c->keytable->name, name) == 0) format_add(ft, "client_prefix", "%d", 0); else format_add(ft, "client_prefix", "%d", 1); format_add(ft, "client_key_table", "%s", c->keytable->name); if (tty->flags & TTY_UTF8) format_add(ft, "client_utf8", "%d", 1); else format_add(ft, "client_utf8", "%d", 0); if (c->flags & CLIENT_READONLY) format_add(ft, "client_readonly", "%d", 1); else format_add(ft, "client_readonly", "%d", 0); s = c->session; if (s != NULL) format_add(ft, "client_session", "%s", s->name); s = c->last_session; if (s != NULL && session_alive(s)) format_add(ft, "client_last_session", "%s", s->name); } /* Set default format keys for a window. */ void format_defaults_window(struct format_tree *ft, struct window *w) { ft->w = w; format_add_tv(ft, "window_activity", &w->activity_time); format_add(ft, "window_id", "@%u", w->id); format_add(ft, "window_name", "%s", w->name); format_add(ft, "window_width", "%u", w->sx); format_add(ft, "window_height", "%u", w->sy); format_add_cb(ft, "window_layout", format_cb_window_layout); format_add_cb(ft, "window_visible_layout", format_cb_window_visible_layout); format_add(ft, "window_panes", "%u", window_count_panes(w)); format_add(ft, "window_zoomed_flag", "%d", !!(w->flags & WINDOW_ZOOMED)); } /* Set default format keys for a winlink. */ static void format_defaults_winlink(struct format_tree *ft, struct winlink *wl) { struct session *s = wl->session; struct window *w = wl->window; if (ft->w == NULL) ft->w = wl->window; ft->wl = wl; format_defaults_window(ft, w); format_add(ft, "window_index", "%d", wl->idx); format_add_cb(ft, "window_stack_index", format_cb_window_stack_index); format_add(ft, "window_flags", "%s", window_printable_flags(wl)); format_add(ft, "window_active", "%d", wl == s->curw); format_add(ft, "window_bell_flag", "%d", !!(wl->flags & WINLINK_BELL)); format_add(ft, "window_activity_flag", "%d", !!(wl->flags & WINLINK_ACTIVITY)); format_add(ft, "window_silence_flag", "%d", !!(wl->flags & WINLINK_SILENCE)); format_add(ft, "window_last_flag", "%d", !!(wl == TAILQ_FIRST(&s->lastw))); format_add(ft, "window_linked", "%d", session_is_linked(s, wl->window)); } /* Set default format keys for a window pane. */ void format_defaults_pane(struct format_tree *ft, struct window_pane *wp) { struct grid *gd = wp->base.grid; int status = wp->status; u_int idx; if (ft->w == NULL) ft->w = wp->window; ft->wp = wp; format_add(ft, "history_size", "%u", gd->hsize); format_add(ft, "history_limit", "%u", gd->hlimit); format_add_cb(ft, "history_bytes", format_cb_history_bytes); if (window_pane_index(wp, &idx) != 0) fatalx("index not found"); format_add(ft, "pane_index", "%u", idx); format_add(ft, "pane_width", "%u", wp->sx); format_add(ft, "pane_height", "%u", wp->sy); format_add(ft, "pane_title", "%s", wp->base.title); format_add(ft, "pane_id", "%%%u", wp->id); format_add(ft, "pane_active", "%d", wp == wp->window->active); format_add(ft, "pane_input_off", "%d", !!(wp->flags & PANE_INPUTOFF)); format_add(ft, "pane_pipe", "%d", wp->pipe_fd != -1); if ((wp->flags & PANE_STATUSREADY) && WIFEXITED(status)) format_add(ft, "pane_dead_status", "%d", WEXITSTATUS(status)); format_add(ft, "pane_dead", "%d", wp->fd == -1); if (window_pane_visible(wp)) { format_add(ft, "pane_left", "%u", wp->xoff); format_add(ft, "pane_top", "%u", wp->yoff); format_add(ft, "pane_right", "%u", wp->xoff + wp->sx - 1); format_add(ft, "pane_bottom", "%u", wp->yoff + wp->sy - 1); format_add(ft, "pane_at_left", "%d", wp->xoff == 0); format_add(ft, "pane_at_top", "%d", wp->yoff == 0); format_add(ft, "pane_at_right", "%d", wp->xoff + wp->sx == wp->window->sx); format_add(ft, "pane_at_bottom", "%d", wp->yoff + wp->sy == wp->window->sy); } format_add(ft, "pane_in_mode", "%d", wp->screen != &wp->base); if (wp->mode != NULL) format_add(ft, "pane_mode", "%s", wp->mode->name); format_add(ft, "pane_synchronized", "%d", !!options_get_number(wp->window->options, "synchronize-panes")); if (wp->searchstr != NULL) format_add(ft, "pane_search_string", "%s", wp->searchstr); format_add(ft, "pane_tty", "%s", wp->tty); format_add(ft, "pane_pid", "%ld", (long) wp->pid); format_add_cb(ft, "pane_start_command", format_cb_start_command); format_add_cb(ft, "pane_current_command", format_cb_current_command); format_add(ft, "cursor_x", "%u", wp->base.cx); format_add(ft, "cursor_y", "%u", wp->base.cy); format_add(ft, "scroll_region_upper", "%u", wp->base.rupper); format_add(ft, "scroll_region_lower", "%u", wp->base.rlower); window_copy_add_formats(wp, ft); format_add(ft, "alternate_on", "%d", wp->saved_grid ? 1 : 0); format_add(ft, "alternate_saved_x", "%u", wp->saved_cx); format_add(ft, "alternate_saved_y", "%u", wp->saved_cy); format_add(ft, "cursor_flag", "%d", !!(wp->base.mode & MODE_CURSOR)); format_add(ft, "insert_flag", "%d", !!(wp->base.mode & MODE_INSERT)); format_add(ft, "keypad_cursor_flag", "%d", !!(wp->base.mode & MODE_KCURSOR)); format_add(ft, "keypad_flag", "%d", !!(wp->base.mode & MODE_KKEYPAD)); format_add(ft, "wrap_flag", "%d", !!(wp->base.mode & MODE_WRAP)); format_add(ft, "mouse_any_flag", "%d", !!(wp->base.mode & ALL_MOUSE_MODES)); format_add(ft, "mouse_standard_flag", "%d", !!(wp->base.mode & MODE_MOUSE_STANDARD)); format_add(ft, "mouse_button_flag", "%d", !!(wp->base.mode & MODE_MOUSE_BUTTON)); format_add(ft, "mouse_all_flag", "%d", !!(wp->base.mode & MODE_MOUSE_ALL)); format_add_cb(ft, "pane_tabs", format_cb_pane_tabs); } /* Set default format keys for paste buffer. */ void format_defaults_paste_buffer(struct format_tree *ft, struct paste_buffer *pb) { struct timeval tv; size_t size; char *s; timerclear(&tv); tv.tv_sec = paste_buffer_created(pb); paste_buffer_data(pb, &size); format_add(ft, "buffer_size", "%zu", size); format_add(ft, "buffer_name", "%s", paste_buffer_name(pb)); format_add_tv(ft, "buffer_created", &tv); s = paste_make_sample(pb); format_add(ft, "buffer_sample", "%s", s); free(s); }