/* $OpenBSD$ */ /* * Copyright (c) 2007 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 "tmux.h" const struct cmd_entry *cmd_table[] = { &cmd_attach_session_entry, &cmd_bind_key_entry, &cmd_break_pane_entry, &cmd_capture_pane_entry, &cmd_choose_buffer_entry, &cmd_choose_client_entry, &cmd_choose_list_entry, &cmd_choose_session_entry, &cmd_choose_tree_entry, &cmd_choose_window_entry, &cmd_clear_history_entry, &cmd_clock_mode_entry, &cmd_command_prompt_entry, &cmd_confirm_before_entry, &cmd_copy_mode_entry, &cmd_delete_buffer_entry, &cmd_detach_client_entry, &cmd_display_message_entry, &cmd_display_panes_entry, &cmd_find_window_entry, &cmd_has_session_entry, &cmd_if_shell_entry, &cmd_join_pane_entry, &cmd_kill_pane_entry, &cmd_kill_server_entry, &cmd_kill_session_entry, &cmd_kill_window_entry, &cmd_last_pane_entry, &cmd_last_window_entry, &cmd_link_window_entry, &cmd_list_buffers_entry, &cmd_list_clients_entry, &cmd_list_commands_entry, &cmd_list_keys_entry, &cmd_list_panes_entry, &cmd_list_sessions_entry, &cmd_list_windows_entry, &cmd_load_buffer_entry, &cmd_lock_client_entry, &cmd_lock_server_entry, &cmd_lock_session_entry, &cmd_move_pane_entry, &cmd_move_window_entry, &cmd_new_session_entry, &cmd_new_window_entry, &cmd_next_layout_entry, &cmd_next_window_entry, &cmd_paste_buffer_entry, &cmd_pipe_pane_entry, &cmd_previous_layout_entry, &cmd_previous_window_entry, &cmd_refresh_client_entry, &cmd_rename_session_entry, &cmd_rename_window_entry, &cmd_resize_pane_entry, &cmd_respawn_pane_entry, &cmd_respawn_window_entry, &cmd_rotate_window_entry, &cmd_run_shell_entry, &cmd_save_buffer_entry, &cmd_select_layout_entry, &cmd_select_pane_entry, &cmd_select_window_entry, &cmd_send_keys_entry, &cmd_send_prefix_entry, &cmd_server_info_entry, &cmd_set_buffer_entry, &cmd_set_environment_entry, &cmd_set_option_entry, &cmd_set_window_option_entry, &cmd_show_buffer_entry, &cmd_show_environment_entry, &cmd_show_messages_entry, &cmd_show_options_entry, &cmd_show_window_options_entry, &cmd_source_file_entry, &cmd_split_window_entry, &cmd_start_server_entry, &cmd_suspend_client_entry, &cmd_swap_pane_entry, &cmd_swap_window_entry, &cmd_switch_client_entry, &cmd_unbind_key_entry, &cmd_unlink_window_entry, NULL }; int cmd_session_better(struct session *, struct session *, int); struct session *cmd_choose_session_list(struct sessionslist *); struct session *cmd_choose_session(int); struct client *cmd_choose_client(struct clients *); struct client *cmd_lookup_client(const char *); struct session *cmd_lookup_session(const char *, int *); struct winlink *cmd_lookup_window(struct session *, const char *, int *); int cmd_lookup_index(struct session *, const char *, int *); struct window_pane *cmd_lookup_paneid(const char *); struct winlink *cmd_lookup_winlink_windowid(struct session *, const char *); struct window *cmd_lookup_windowid(const char *); struct session *cmd_window_session(struct cmd_ctx *, struct window *, struct winlink **); struct winlink *cmd_find_window_offset(const char *, struct session *, int *); int cmd_find_index_offset(const char *, struct session *, int *); struct window_pane *cmd_find_pane_offset(const char *, struct winlink *); int cmd_pack_argv(int argc, char **argv, char *buf, size_t len) { size_t arglen; int i; *buf = '\0'; for (i = 0; i < argc; i++) { if (strlcpy(buf, argv[i], len) >= len) return (-1); arglen = strlen(argv[i]) + 1; buf += arglen; len -= arglen; } return (0); } int cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv) { int i; size_t arglen; if (argc == 0) return (0); *argv = xcalloc(argc, sizeof **argv); buf[len - 1] = '\0'; for (i = 0; i < argc; i++) { if (len == 0) { cmd_free_argv(argc, *argv); return (-1); } arglen = strlen(buf) + 1; (*argv)[i] = xstrdup(buf); buf += arglen; len -= arglen; } return (0); } char ** cmd_copy_argv(int argc, char *const *argv) { char **new_argv; int i; if (argc == 0) return (NULL); new_argv = xcalloc(argc, sizeof *new_argv); for (i = 0; i < argc; i++) { if (argv[i] != NULL) new_argv[i] = xstrdup(argv[i]); } return (new_argv); } void cmd_free_argv(int argc, char **argv) { int i; if (argc == 0) return; for (i = 0; i < argc; i++) free(argv[i]); free(argv); } struct cmd * cmd_parse(int argc, char **argv, char **cause) { const struct cmd_entry **entryp, *entry; struct cmd *cmd; struct args *args; char s[BUFSIZ]; int ambiguous = 0; *cause = NULL; if (argc == 0) { xasprintf(cause, "no command"); return (NULL); } entry = NULL; for (entryp = cmd_table; *entryp != NULL; entryp++) { if ((*entryp)->alias != NULL && strcmp((*entryp)->alias, argv[0]) == 0) { ambiguous = 0; entry = *entryp; break; } if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0) continue; if (entry != NULL) ambiguous = 1; entry = *entryp; /* Bail now if an exact match. */ if (strcmp(entry->name, argv[0]) == 0) break; } if (ambiguous) goto ambiguous; if (entry == NULL) { xasprintf(cause, "unknown command: %s", argv[0]); return (NULL); } args = args_parse(entry->args_template, argc, argv); if (args == NULL) goto usage; if (entry->args_lower != -1 && args->argc < entry->args_lower) goto usage; if (entry->args_upper != -1 && args->argc > entry->args_upper) goto usage; if (entry->check != NULL && entry->check(args) != 0) goto usage; cmd = xmalloc(sizeof *cmd); cmd->entry = entry; cmd->args = args; return (cmd); ambiguous: *s = '\0'; for (entryp = cmd_table; *entryp != NULL; entryp++) { if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0) continue; if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s) break; if (strlcat(s, ", ", sizeof s) >= sizeof s) break; } s[strlen(s) - 2] = '\0'; xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s); return (NULL); usage: if (args != NULL) args_free(args); xasprintf(cause, "usage: %s %s", entry->name, entry->usage); return (NULL); } enum cmd_retval cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx) { return (cmd->entry->exec(cmd, ctx)); } void cmd_free(struct cmd *cmd) { args_free(cmd->args); free(cmd); } size_t cmd_print(struct cmd *cmd, char *buf, size_t len) { size_t off, used; off = xsnprintf(buf, len, "%s ", cmd->entry->name); if (off < len) { used = args_print(cmd->args, buf + off, len - off); if (used == 0) off--; else off += used; buf[off] = '\0'; } return (off); } /* * Figure out the current session. Use: 1) the current session, if the command * context has one; 2) the most recently used session containing the pty of the * calling client, if any; 3) the session specified in the TMUX variable from * the environment (as passed from the client); 4) the most recently used * session from all sessions. */ struct session * cmd_current_session(struct cmd_ctx *ctx, int prefer_unattached) { struct msg_command_data *data = ctx->msgdata; struct client *c = ctx->cmdclient; struct session *s; struct sessionslist ss; struct winlink *wl; struct window_pane *wp; int found; if (ctx->curclient != NULL && ctx->curclient->session != NULL) return (ctx->curclient->session); /* * If the name of the calling client's pty is know, build a list of the * sessions that contain it and if any choose either the first or the * newest. */ if (c != NULL && c->tty.path != NULL) { ARRAY_INIT(&ss); RB_FOREACH(s, sessions, &sessions) { found = 0; RB_FOREACH(wl, winlinks, &s->windows) { TAILQ_FOREACH(wp, &wl->window->panes, entry) { if (strcmp(wp->tty, c->tty.path) == 0) { found = 1; break; } } if (found) break; } if (found) ARRAY_ADD(&ss, s); } s = cmd_choose_session_list(&ss); ARRAY_FREE(&ss); if (s != NULL) return (s); } /* Use the session from the TMUX environment variable. */ if (data != NULL && data->pid == getpid() && data->idx != -1) { s = session_find_by_index(data->idx); if (s != NULL) return (s); } return (cmd_choose_session(prefer_unattached)); } /* Is this session better? */ int cmd_session_better(struct session *s, struct session *best, int prefer_unattached) { if (best == NULL) return 1; if (prefer_unattached) { if (!(best->flags & SESSION_UNATTACHED) && (s->flags & SESSION_UNATTACHED)) return 1; else if ((best->flags & SESSION_UNATTACHED) && !(s->flags & SESSION_UNATTACHED)) return 0; } return (timercmp(&s->activity_time, &best->activity_time, >)); } /* * Find the most recently used session, preferring unattached if the flag is * set. */ struct session * cmd_choose_session(int prefer_unattached) { struct session *s, *best; best = NULL; RB_FOREACH(s, sessions, &sessions) { if (cmd_session_better(s, best, prefer_unattached)) best = s; } return (best); } /* Find the most recently used session from a list. */ struct session * cmd_choose_session_list(struct sessionslist *ss) { struct session *s, *sbest; struct timeval *tv = NULL; u_int i; sbest = NULL; for (i = 0; i < ARRAY_LENGTH(ss); i++) { if ((s = ARRAY_ITEM(ss, i)) == NULL) continue; if (tv == NULL || timercmp(&s->activity_time, tv, >)) { sbest = s; tv = &s->activity_time; } } return (sbest); } /* * Find the current client. First try the current client if set, then pick the * most recently used of the clients attached to the current session if any, * then of all clients. */ struct client * cmd_current_client(struct cmd_ctx *ctx) { struct session *s; struct client *c; struct clients cc; u_int i; if (ctx->curclient != NULL) return (ctx->curclient); /* * No current client set. Find the current session and return the * newest of its clients. */ s = cmd_current_session(ctx, 0); if (s != NULL && !(s->flags & SESSION_UNATTACHED)) { ARRAY_INIT(&cc); for (i = 0; i < ARRAY_LENGTH(&clients); i++) { if ((c = ARRAY_ITEM(&clients, i)) == NULL) continue; if (s == c->session) ARRAY_ADD(&cc, c); } c = cmd_choose_client(&cc); ARRAY_FREE(&cc); if (c != NULL) return (c); } return (cmd_choose_client(&clients)); } /* Choose the most recently used client from a list. */ struct client * cmd_choose_client(struct clients *cc) { struct client *c, *cbest; struct timeval *tv = NULL; u_int i; cbest = NULL; for (i = 0; i < ARRAY_LENGTH(cc); i++) { if ((c = ARRAY_ITEM(cc, i)) == NULL) continue; if (c->session == NULL) continue; if (tv == NULL || timercmp(&c->activity_time, tv, >)) { cbest = c; tv = &c->activity_time; } } return (cbest); } /* Find the target client or report an error and return NULL. */ struct client * cmd_find_client(struct cmd_ctx *ctx, const char *arg) { struct client *c; char *tmparg; size_t arglen; /* A NULL argument means the current client. */ if (arg == NULL) return (cmd_current_client(ctx)); tmparg = xstrdup(arg); /* Trim a single trailing colon if any. */ arglen = strlen(tmparg); if (arglen != 0 && tmparg[arglen - 1] == ':') tmparg[arglen - 1] = '\0'; /* Find the client, if any. */ c = cmd_lookup_client(tmparg); /* If no client found, report an error. */ if (c == NULL) ctx->error(ctx, "client not found: %s", tmparg); free(tmparg); return (c); } /* * Lookup a client by device path. Either of a full match and a match without a * leading _PATH_DEV ("/dev/") is accepted. */ struct client * cmd_lookup_client(const char *name) { struct client *c; const char *path; u_int i; for (i = 0; i < ARRAY_LENGTH(&clients); i++) { c = ARRAY_ITEM(&clients, i); if (c == NULL || c->session == NULL) continue; path = c->tty.path; /* Check for exact matches. */ if (strcmp(name, path) == 0) return (c); /* Check without leading /dev if present. */ if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0) continue; if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0) return (c); } return (NULL); } /* Lookup a session by name. If no session is found, NULL is returned. */ struct session * cmd_lookup_session(const char *name, int *ambiguous) { struct session *s, *sfound; *ambiguous = 0; /* * Look for matches. First look for exact matches - session names must * be unique so an exact match can't be ambigious and can just be * returned. */ if ((s = session_find(name)) != NULL) return (s); /* * Otherwise look for partial matches, returning early if it is found to * be ambiguous. */ sfound = NULL; RB_FOREACH(s, sessions, &sessions) { if (strncmp(name, s->name, strlen(name)) == 0 || fnmatch(name, s->name, 0) == 0) { if (sfound != NULL) { *ambiguous = 1; return (NULL); } sfound = s; } } return (sfound); } /* * Lookup a window or return -1 if not found or ambigious. First try as an * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in * idx if the window index is a valid number but there is no window with that * index. */ struct winlink * cmd_lookup_window(struct session *s, const char *name, int *ambiguous) { struct winlink *wl, *wlfound; const char *errstr; u_int idx; *ambiguous = 0; /* Try as a window id. */ if ((wl = cmd_lookup_winlink_windowid(s, name)) != NULL) return (wl); /* First see if this is a valid window index in this session. */ idx = strtonum(name, 0, INT_MAX, &errstr); if (errstr == NULL) { if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL) return (wl); } /* Look for exact matches, error if more than one. */ wlfound = NULL; RB_FOREACH(wl, winlinks, &s->windows) { if (strcmp(name, wl->window->name) == 0) { if (wlfound != NULL) { *ambiguous = 1; return (NULL); } wlfound = wl; } } if (wlfound != NULL) return (wlfound); /* Now look for pattern matches, again error if multiple. */ wlfound = NULL; RB_FOREACH(wl, winlinks, &s->windows) { if (strncmp(name, wl->window->name, strlen(name)) == 0 || fnmatch(name, wl->window->name, 0) == 0) { if (wlfound != NULL) { *ambiguous = 1; return (NULL); } wlfound = wl; } } if (wlfound != NULL) return (wlfound); return (NULL); } /* * Find a window index - if the window doesn't exist, check if it is a * potential index and return it anyway. */ int cmd_lookup_index(struct session *s, const char *name, int *ambiguous) { struct winlink *wl; const char *errstr; u_int idx; if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL) return (wl->idx); if (*ambiguous) return (-1); idx = strtonum(name, 0, INT_MAX, &errstr); if (errstr == NULL) return (idx); return (-1); } /* Lookup pane id. An initial % means a pane id. */ struct window_pane * cmd_lookup_paneid(const char *arg) { const char *errstr; u_int paneid; if (*arg != '%') return (NULL); paneid = strtonum(arg + 1, 0, UINT_MAX, &errstr); if (errstr != NULL) return (NULL); return (window_pane_find_by_id(paneid)); } /* Lookup window id in a session. An initial @ means a window id. */ struct winlink * cmd_lookup_winlink_windowid(struct session *s, const char *arg) { const char *errstr; u_int windowid; if (*arg != '@') return (NULL); windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr); if (errstr != NULL) return (NULL); return (winlink_find_by_window_id(&s->windows, windowid)); } /* Lookup window id. An initial @ means a window id. */ struct window * cmd_lookup_windowid(const char *arg) { const char *errstr; u_int windowid; if (*arg != '@') return (NULL); windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr); if (errstr != NULL) return (NULL); return (window_find_by_id(windowid)); } /* Find session and winlink for window. */ struct session * cmd_window_session(struct cmd_ctx *ctx, struct window *w, struct winlink **wlp) { struct session *s; struct sessionslist ss; struct winlink *wl; /* If this window is in the current session, return that winlink. */ s = cmd_current_session(ctx, 0); if (s != NULL) { wl = winlink_find_by_window(&s->windows, w); if (wl != NULL) { if (wlp != NULL) *wlp = wl; return (s); } } /* Otherwise choose from all sessions with this window. */ ARRAY_INIT(&ss); RB_FOREACH(s, sessions, &sessions) { if (winlink_find_by_window(&s->windows, w) != NULL) ARRAY_ADD(&ss, s); } s = cmd_choose_session_list(&ss); ARRAY_FREE(&ss); if (wlp != NULL) *wlp = winlink_find_by_window(&s->windows, w); return (s); } /* Find the target session or report an error and return NULL. */ struct session * cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached) { struct session *s; struct window_pane *wp; struct window *w; struct client *c; char *tmparg; size_t arglen; int ambiguous; /* A NULL argument means the current session. */ if (arg == NULL) return (cmd_current_session(ctx, prefer_unattached)); /* Lookup as pane id or window id. */ if ((wp = cmd_lookup_paneid(arg)) != NULL) return (cmd_window_session(ctx, wp->window, NULL)); if ((w = cmd_lookup_windowid(arg)) != NULL) return (cmd_window_session(ctx, w, NULL)); /* Trim a single trailing colon if any. */ tmparg = xstrdup(arg); arglen = strlen(tmparg); if (arglen != 0 && tmparg[arglen - 1] == ':') tmparg[arglen - 1] = '\0'; /* An empty session name is the current session. */ if (*tmparg == '\0') { free(tmparg); return (cmd_current_session(ctx, prefer_unattached)); } /* Find the session, if any. */ s = cmd_lookup_session(tmparg, &ambiguous); /* If it doesn't, try to match it as a client. */ if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL) s = c->session; /* If no session found, report an error. */ if (s == NULL) { if (ambiguous) ctx->error(ctx, "more than one session: %s", tmparg); else ctx->error(ctx, "session not found: %s", tmparg); } free(tmparg); return (s); } /* Find the target session and window or report an error and return NULL. */ struct winlink * cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp) { struct session *s; struct winlink *wl; struct window_pane *wp; const char *winptr; char *sessptr = NULL; int ambiguous = 0; /* * Find the current session. There must always be a current session, if * it can't be found, report an error. */ if ((s = cmd_current_session(ctx, 0)) == NULL) { ctx->error(ctx, "can't establish current session"); return (NULL); } /* A NULL argument means the current session and window. */ if (arg == NULL) { if (sp != NULL) *sp = s; return (s->curw); } /* Lookup as pane id. */ if ((wp = cmd_lookup_paneid(arg)) != NULL) { s = cmd_window_session(ctx, wp->window, &wl); if (sp != NULL) *sp = s; return (wl); } /* Time to look at the argument. If it is empty, that is an error. */ if (*arg == '\0') goto not_found; /* Find the separating colon and split into window and session. */ winptr = strchr(arg, ':'); if (winptr == NULL) goto no_colon; winptr++; /* skip : */ sessptr = xstrdup(arg); *strchr(sessptr, ':') = '\0'; /* Try to lookup the session if present. */ if (*sessptr != '\0') { if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL) goto no_session; } if (sp != NULL) *sp = s; /* * Then work out the window. An empty string is the current window, * otherwise try special cases then to look it up in the session. */ if (*winptr == '\0') wl = s->curw; else if (winptr[0] == '!' && winptr[1] == '\0') wl = TAILQ_FIRST(&s->lastw); else if (winptr[0] == '^' && winptr[1] == '\0') wl = RB_MIN(winlinks, &s->windows); else if (winptr[0] == '$' && winptr[1] == '\0') wl = RB_MAX(winlinks, &s->windows); else if (winptr[0] == '+' || winptr[0] == '-') wl = cmd_find_window_offset(winptr, s, &ambiguous); else wl = cmd_lookup_window(s, winptr, &ambiguous); if (wl == NULL) goto not_found; if (sessptr != NULL) free(sessptr); return (wl); no_colon: /* * No colon in the string, first try special cases, then as a window * and lastly as a session. */ if (arg[0] == '!' && arg[1] == '\0') { if ((wl = TAILQ_FIRST(&s->lastw)) == NULL) goto not_found; } else if (arg[0] == '+' || arg[0] == '-') { if ((wl = cmd_find_window_offset(arg, s, &ambiguous)) == NULL) goto lookup_session; } else if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) goto lookup_session; if (sp != NULL) *sp = s; return (wl); lookup_session: if (ambiguous) goto not_found; if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL) goto no_session; if (sp != NULL) *sp = s; return (s->curw); no_session: if (ambiguous) ctx->error(ctx, "multiple sessions: %s", arg); else ctx->error(ctx, "session not found: %s", arg); free(sessptr); return (NULL); not_found: if (ambiguous) ctx->error(ctx, "multiple windows: %s", arg); else ctx->error(ctx, "window not found: %s", arg); free(sessptr); return (NULL); } struct winlink * cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous) { struct winlink *wl; int offset = 1; if (winptr[1] != '\0') offset = strtonum(winptr + 1, 1, INT_MAX, NULL); if (offset == 0) wl = cmd_lookup_window(s, winptr, ambiguous); else { if (winptr[0] == '+') wl = winlink_next_by_number(s->curw, s, offset); else wl = winlink_previous_by_number(s->curw, s, offset); } return (wl); } /* * Find the target session and window index, whether or not it exists in the * session. Return -2 on error or -1 if no window index is specified. This is * used when parsing an argument for a window target that may not exist (for * example if it is going to be created). */ int cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp) { struct session *s; struct winlink *wl; const char *winptr; char *sessptr = NULL; int idx, ambiguous = 0; /* * Find the current session. There must always be a current session, if * it can't be found, report an error. */ if ((s = cmd_current_session(ctx, 0)) == NULL) { ctx->error(ctx, "can't establish current session"); return (-2); } /* A NULL argument means the current session and "no window" (-1). */ if (arg == NULL) { if (sp != NULL) *sp = s; return (-1); } /* Time to look at the argument. If it is empty, that is an error. */ if (*arg == '\0') goto not_found; /* Find the separating colon. If none, assume the current session. */ winptr = strchr(arg, ':'); if (winptr == NULL) goto no_colon; winptr++; /* skip : */ sessptr = xstrdup(arg); *strchr(sessptr, ':') = '\0'; /* Try to lookup the session if present. */ if (sessptr != NULL && *sessptr != '\0') { if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL) goto no_session; } if (sp != NULL) *sp = s; /* * Then work out the window. An empty string is a new window otherwise * try to look it up in the session. */ if (*winptr == '\0') idx = -1; else if (winptr[0] == '!' && winptr[1] == '\0') { if ((wl = TAILQ_FIRST(&s->lastw)) == NULL) goto not_found; idx = wl->idx; } else if (winptr[0] == '+' || winptr[0] == '-') { if ((idx = cmd_find_index_offset(winptr, s, &ambiguous)) < 0) goto invalid_index; } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) goto invalid_index; free(sessptr); return (idx); no_colon: /* * No colon in the string, first try special cases, then as a window * and lastly as a session. */ if (arg[0] == '!' && arg[1] == '\0') { if ((wl = TAILQ_FIRST(&s->lastw)) == NULL) goto not_found; idx = wl->idx; } else if (arg[0] == '+' || arg[0] == '-') { if ((idx = cmd_find_index_offset(arg, s, &ambiguous)) < 0) goto lookup_session; } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) goto lookup_session; if (sp != NULL) *sp = s; return (idx); lookup_session: if (ambiguous) goto not_found; if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL) goto no_session; if (sp != NULL) *sp = s; return (-1); no_session: if (ambiguous) ctx->error(ctx, "multiple sessions: %s", arg); else ctx->error(ctx, "session not found: %s", arg); free(sessptr); return (-2); invalid_index: if (ambiguous) goto not_found; ctx->error(ctx, "invalid index: %s", arg); free(sessptr); return (-2); not_found: if (ambiguous) ctx->error(ctx, "multiple windows: %s", arg); else ctx->error(ctx, "window not found: %s", arg); free(sessptr); return (-2); } int cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous) { int idx, offset = 1; if (winptr[1] != '\0') offset = strtonum(winptr + 1, 1, INT_MAX, NULL); if (offset == 0) idx = cmd_lookup_index(s, winptr, ambiguous); else { if (winptr[0] == '+') { if (s->curw->idx == INT_MAX) idx = cmd_lookup_index(s, winptr, ambiguous); else idx = s->curw->idx + offset; } else { if (s->curw->idx == 0) idx = cmd_lookup_index(s, winptr, ambiguous); else idx = s->curw->idx - offset; } } return (idx); } /* * Find the target session, window and pane number or report an error and * return NULL. The pane number is separated from the session:window by a ., * such as mysession:mywindow.0. */ struct winlink * cmd_find_pane(struct cmd_ctx *ctx, const char *arg, struct session **sp, struct window_pane **wpp) { struct session *s; struct winlink *wl; const char *period, *errstr; char *winptr, *paneptr; u_int idx; /* Get the current session. */ if ((s = cmd_current_session(ctx, 0)) == NULL) { ctx->error(ctx, "can't establish current session"); return (NULL); } if (sp != NULL) *sp = s; /* A NULL argument means the current session, window and pane. */ if (arg == NULL) { *wpp = s->curw->window->active; return (s->curw); } /* Lookup as pane id. */ if ((*wpp = cmd_lookup_paneid(arg)) != NULL) { s = cmd_window_session(ctx, (*wpp)->window, &wl); if (sp != NULL) *sp = s; return (wl); } /* Look for a separating period. */ if ((period = strrchr(arg, '.')) == NULL) goto no_period; /* Pull out the window part and parse it. */ winptr = xstrdup(arg); winptr[period - arg] = '\0'; if (*winptr == '\0') wl = s->curw; else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL) goto error; /* Find the pane section and look it up. */ paneptr = winptr + (period - arg) + 1; if (*paneptr == '\0') *wpp = wl->window->active; else if (paneptr[0] == '+' || paneptr[0] == '-') *wpp = cmd_find_pane_offset(paneptr, wl); else { idx = strtonum(paneptr, 0, INT_MAX, &errstr); if (errstr != NULL) goto lookup_string; *wpp = window_pane_at_index(wl->window, idx); if (*wpp == NULL) goto lookup_string; } free(winptr); return (wl); lookup_string: /* Try pane string description. */ if ((*wpp = window_find_string(wl->window, paneptr)) == NULL) { ctx->error(ctx, "can't find pane: %s", paneptr); goto error; } free(winptr); return (wl); no_period: /* Try as a pane number alone. */ idx = strtonum(arg, 0, INT_MAX, &errstr); if (errstr != NULL) goto lookup_window; /* Try index in the current session and window. */ if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL) goto lookup_window; return (s->curw); lookup_window: /* Try pane string description. */ if ((*wpp = window_find_string(s->curw->window, arg)) != NULL) return (s->curw); /* Try as a window and use the active pane. */ if ((wl = cmd_find_window(ctx, arg, sp)) != NULL) *wpp = wl->window->active; return (wl); error: free(winptr); return (NULL); } struct window_pane * cmd_find_pane_offset(const char *paneptr, struct winlink *wl) { struct window *w = wl->window; struct window_pane *wp = w->active; u_int offset = 1; if (paneptr[1] != '\0') offset = strtonum(paneptr + 1, 1, INT_MAX, NULL); if (offset > 0) { if (paneptr[0] == '+') wp = window_pane_next_by_number(w, wp, offset); else wp = window_pane_previous_by_number(w, wp, offset); } return (wp); } /* Replace the first %% or %idx in template by s. */ char * cmd_template_replace(char *template, const char *s, int idx) { char ch; char *buf, *ptr; int replaced; size_t len; if (strstr(template, "%") == NULL) return (xstrdup(template)); buf = xmalloc(1); *buf = '\0'; len = 0; replaced = 0; ptr = template; while (*ptr != '\0') { switch (ch = *ptr++) { case '%': if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) { if (*ptr != '%' || replaced) break; replaced = 1; } ptr++; len += strlen(s); buf = xrealloc(buf, 1, len + 1); strlcat(buf, s, len + 1); continue; } buf = xrealloc(buf, 1, len + 2); buf[len++] = ch; buf[len] = '\0'; } return (buf); } /* * Return the default path for a new pane, using the given path or the * default-path option if it is NULL. Several special values are accepted: the * empty string or relative path for the current pane's working directory, ~ * for the user's home, - for the session working directory, . for the tmux * server's working directory. The default on failure is the session's working * directory. */ const char * cmd_get_default_path(struct cmd_ctx *ctx, const char *cwd) { struct session *s; struct environ_entry *envent; const char *root; char tmp[MAXPATHLEN]; struct passwd *pw; int n; size_t skip; static char path[MAXPATHLEN]; if ((s = cmd_current_session(ctx, 0)) == NULL) return (NULL); if (cwd == NULL) cwd = options_get_string(&s->options, "default-path"); skip = 1; if (strcmp(cwd, "$HOME") == 0 || strncmp(cwd, "$HOME/", 6) == 0) { /* User's home directory - $HOME. */ skip = 5; goto find_home; } else if (cwd[0] == '~' && (cwd[1] == '\0' || cwd[1] == '/')) { /* User's home directory - ~. */ goto find_home; } else if (cwd[0] == '-' && (cwd[1] == '\0' || cwd[1] == '/')) { /* Session working directory. */ root = s->cwd; goto complete_path; } else if (cwd[0] == '.' && (cwd[1] == '\0' || cwd[1] == '/')) { /* Server working directory. */ if (getcwd(tmp, sizeof tmp) != NULL) { root = tmp; goto complete_path; } return (s->cwd); } else if (*cwd == '/') { /* Absolute path. */ return (cwd); } else { /* Empty or relative path. */ if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL) root = ctx->cmdclient->cwd; else if (ctx->curclient != NULL && s->curw != NULL) root = get_proc_cwd(s->curw->window->active->fd); else return (s->cwd); skip = 0; if (root != NULL) goto complete_path; } return (s->cwd); find_home: envent = environ_find(&global_environ, "HOME"); if (envent != NULL && *envent->value != '\0') root = envent->value; else if ((pw = getpwuid(getuid())) != NULL) root = pw->pw_dir; else return (s->cwd); complete_path: if (root[skip] == '\0') { strlcpy(path, root, sizeof path); return (path); } n = snprintf(path, sizeof path, "%s/%s", root, cwd + skip); if (n > 0 && (size_t)n < sizeof path) return (path); return (s->cwd); }