1 /* $OpenBSD: notify.c,v 1.36 2020/05/21 07:24:13 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2012 George Nachman <tmux@georgester.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/queue.h> 21 22 #include <stdlib.h> 23 #include <string.h> 24 25 #include "tmux.h" 26 27 struct notify_entry { 28 const char *name; 29 30 struct client *client; 31 struct session *session; 32 struct window *window; 33 int pane; 34 35 struct cmd_find_state fs; 36 }; 37 38 static void 39 notify_hook_formats(struct cmdq_state *state, struct session *s, 40 struct window *w, int pane) 41 { 42 if (s != NULL) { 43 cmdq_add_format(state, "hook_session", "$%u", s->id); 44 cmdq_add_format(state, "hook_session_name", "%s", s->name); 45 } 46 if (w != NULL) { 47 cmdq_add_format(state, "hook_window", "@%u", w->id); 48 cmdq_add_format(state, "hook_window_name", "%s", w->name); 49 } 50 if (pane != -1) 51 cmdq_add_format(state, "hook_pane", "%%%d", pane); 52 } 53 54 static void 55 notify_insert_hook(struct cmdq_item *item, struct notify_entry *ne) 56 { 57 struct cmd_find_state fs; 58 struct options *oo; 59 struct cmdq_item *new_item; 60 struct cmdq_state *new_state; 61 struct session *s = ne->session; 62 struct window *w = ne->window; 63 struct options_entry *o; 64 struct options_array_item *a; 65 struct cmd_list *cmdlist; 66 67 log_debug("%s: %s", __func__, ne->name); 68 69 cmd_find_clear_state(&fs, 0); 70 if (cmd_find_empty_state(&ne->fs) || !cmd_find_valid_state(&ne->fs)) 71 cmd_find_from_nothing(&fs, 0); 72 else 73 cmd_find_copy_state(&fs, &ne->fs); 74 75 if (fs.s == NULL) 76 oo = global_s_options; 77 else 78 oo = fs.s->options; 79 o = options_get(oo, ne->name); 80 if (o == NULL && fs.wp != NULL) { 81 oo = fs.wp->options; 82 o = options_get(oo, ne->name); 83 } 84 if (o == NULL && fs.wl != NULL) { 85 oo = fs.wl->window->options; 86 o = options_get(oo, ne->name); 87 } 88 if (o == NULL) 89 return; 90 91 new_state = cmdq_new_state(&fs, NULL, CMDQ_STATE_NOHOOKS); 92 cmdq_add_format(new_state, "hook", "%s", ne->name); 93 notify_hook_formats(new_state, s, w, ne->pane); 94 95 a = options_array_first(o); 96 while (a != NULL) { 97 cmdlist = options_array_item_value(a)->cmdlist; 98 if (cmdlist != NULL) { 99 new_item = cmdq_get_command(cmdlist, new_state); 100 item = cmdq_insert_after(item, new_item); 101 } 102 a = options_array_next(a); 103 } 104 105 cmdq_free_state(new_state); 106 } 107 108 static enum cmd_retval 109 notify_callback(struct cmdq_item *item, void *data) 110 { 111 struct notify_entry *ne = data; 112 113 log_debug("%s: %s", __func__, ne->name); 114 115 if (strcmp(ne->name, "pane-mode-changed") == 0) 116 control_notify_pane_mode_changed(ne->pane); 117 if (strcmp(ne->name, "window-layout-changed") == 0) 118 control_notify_window_layout_changed(ne->window); 119 if (strcmp(ne->name, "window-pane-changed") == 0) 120 control_notify_window_pane_changed(ne->window); 121 if (strcmp(ne->name, "window-unlinked") == 0) 122 control_notify_window_unlinked(ne->session, ne->window); 123 if (strcmp(ne->name, "window-linked") == 0) 124 control_notify_window_linked(ne->session, ne->window); 125 if (strcmp(ne->name, "window-renamed") == 0) 126 control_notify_window_renamed(ne->window); 127 if (strcmp(ne->name, "client-session-changed") == 0) 128 control_notify_client_session_changed(ne->client); 129 if (strcmp(ne->name, "session-renamed") == 0) 130 control_notify_session_renamed(ne->session); 131 if (strcmp(ne->name, "session-created") == 0) 132 control_notify_session_created(ne->session); 133 if (strcmp(ne->name, "session-closed") == 0) 134 control_notify_session_closed(ne->session); 135 if (strcmp(ne->name, "session-window-changed") == 0) 136 control_notify_session_window_changed(ne->session); 137 138 notify_insert_hook(item, ne); 139 140 if (ne->client != NULL) 141 server_client_unref(ne->client); 142 if (ne->session != NULL) 143 session_remove_ref(ne->session, __func__); 144 if (ne->window != NULL) 145 window_remove_ref(ne->window, __func__); 146 147 if (ne->fs.s != NULL) 148 session_remove_ref(ne->fs.s, __func__); 149 150 free((void *)ne->name); 151 free(ne); 152 153 return (CMD_RETURN_NORMAL); 154 } 155 156 static void 157 notify_add(const char *name, struct cmd_find_state *fs, struct client *c, 158 struct session *s, struct window *w, struct window_pane *wp) 159 { 160 struct notify_entry *ne; 161 struct cmdq_item *item; 162 163 item = cmdq_running(NULL); 164 if (item != NULL && (cmdq_get_flags(item) & CMDQ_STATE_NOHOOKS)) 165 return; 166 167 ne = xcalloc(1, sizeof *ne); 168 ne->name = xstrdup(name); 169 170 ne->client = c; 171 ne->session = s; 172 ne->window = w; 173 174 if (wp != NULL) 175 ne->pane = wp->id; 176 else 177 ne->pane = -1; 178 179 if (c != NULL) 180 c->references++; 181 if (s != NULL) 182 session_add_ref(s, __func__); 183 if (w != NULL) 184 window_add_ref(w, __func__); 185 186 cmd_find_copy_state(&ne->fs, fs); 187 if (ne->fs.s != NULL) /* cmd_find_valid_state needs session */ 188 session_add_ref(ne->fs.s, __func__); 189 190 cmdq_append(NULL, cmdq_get_callback(notify_callback, ne)); 191 } 192 193 void 194 notify_hook(struct cmdq_item *item, const char *name) 195 { 196 struct cmd_find_state *target = cmdq_get_target(item); 197 struct notify_entry ne; 198 199 memset(&ne, 0, sizeof ne); 200 201 ne.name = name; 202 cmd_find_copy_state(&ne.fs, target); 203 204 ne.client = cmdq_get_client(item); 205 ne.session = target->s; 206 ne.window = target->w; 207 ne.pane = target->wp->id; 208 209 notify_insert_hook(item, &ne); 210 } 211 212 void 213 notify_client(const char *name, struct client *c) 214 { 215 struct cmd_find_state fs; 216 217 cmd_find_from_client(&fs, c, 0); 218 notify_add(name, &fs, c, NULL, NULL, NULL); 219 } 220 221 void 222 notify_session(const char *name, struct session *s) 223 { 224 struct cmd_find_state fs; 225 226 if (session_alive(s)) 227 cmd_find_from_session(&fs, s, 0); 228 else 229 cmd_find_from_nothing(&fs, 0); 230 notify_add(name, &fs, NULL, s, NULL, NULL); 231 } 232 233 void 234 notify_winlink(const char *name, struct winlink *wl) 235 { 236 struct cmd_find_state fs; 237 238 cmd_find_from_winlink(&fs, wl, 0); 239 notify_add(name, &fs, NULL, wl->session, wl->window, NULL); 240 } 241 242 void 243 notify_session_window(const char *name, struct session *s, struct window *w) 244 { 245 struct cmd_find_state fs; 246 247 cmd_find_from_session_window(&fs, s, w, 0); 248 notify_add(name, &fs, NULL, s, w, NULL); 249 } 250 251 void 252 notify_window(const char *name, struct window *w) 253 { 254 struct cmd_find_state fs; 255 256 cmd_find_from_window(&fs, w, 0); 257 notify_add(name, &fs, NULL, NULL, w, NULL); 258 } 259 260 void 261 notify_pane(const char *name, struct window_pane *wp) 262 { 263 struct cmd_find_state fs; 264 265 cmd_find_from_pane(&fs, wp, 0); 266 notify_add(name, &fs, NULL, NULL, NULL, wp); 267 } 268