1 /* $OpenBSD$ */
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
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "tmux.h"
25
26 struct notify_entry {
27 const char *name;
28 struct cmd_find_state fs;
29 struct format_tree *formats;
30
31 struct client *client;
32 struct session *session;
33 struct window *window;
34 int pane;
35 const char *pbname;
36 };
37
38 static struct cmdq_item *
notify_insert_one_hook(struct cmdq_item * item,struct notify_entry * ne,struct cmd_list * cmdlist,struct cmdq_state * state)39 notify_insert_one_hook(struct cmdq_item *item, struct notify_entry *ne,
40 struct cmd_list *cmdlist, struct cmdq_state *state)
41 {
42 struct cmdq_item *new_item;
43 char *s;
44
45 if (cmdlist == NULL)
46 return (item);
47 if (log_get_level() != 0) {
48 s = cmd_list_print(cmdlist, 0);
49 log_debug("%s: hook %s is: %s", __func__, ne->name, s);
50 free(s);
51 }
52 new_item = cmdq_get_command(cmdlist, state);
53 return (cmdq_insert_after(item, new_item));
54 }
55
56 static void
notify_insert_hook(struct cmdq_item * item,struct notify_entry * ne)57 notify_insert_hook(struct cmdq_item *item, struct notify_entry *ne)
58 {
59 struct cmd_find_state fs;
60 struct options *oo;
61 struct cmdq_state *state;
62 struct options_entry *o;
63 struct options_array_item *a;
64 struct cmd_list *cmdlist;
65 const char *value;
66 struct cmd_parse_result *pr;
67
68 log_debug("%s: inserting hook %s", __func__, ne->name);
69
70 cmd_find_clear_state(&fs, 0);
71 if (cmd_find_empty_state(&ne->fs) || !cmd_find_valid_state(&ne->fs))
72 cmd_find_from_nothing(&fs, 0);
73 else
74 cmd_find_copy_state(&fs, &ne->fs);
75
76 if (fs.s == NULL)
77 oo = global_s_options;
78 else
79 oo = fs.s->options;
80 o = options_get(oo, ne->name);
81 if (o == NULL && fs.wp != NULL) {
82 oo = fs.wp->options;
83 o = options_get(oo, ne->name);
84 }
85 if (o == NULL && fs.wl != NULL) {
86 oo = fs.wl->window->options;
87 o = options_get(oo, ne->name);
88 }
89 if (o == NULL) {
90 log_debug("%s: hook %s not found", __func__, ne->name);
91 return;
92 }
93
94 state = cmdq_new_state(&fs, NULL, CMDQ_STATE_NOHOOKS);
95 cmdq_add_formats(state, ne->formats);
96
97 if (*ne->name == '@') {
98 value = options_get_string(oo, ne->name);
99 pr = cmd_parse_from_string(value, NULL);
100 switch (pr->status) {
101 case CMD_PARSE_ERROR:
102 log_debug("%s: can't parse hook %s: %s", __func__,
103 ne->name, pr->error);
104 free(pr->error);
105 break;
106 case CMD_PARSE_SUCCESS:
107 notify_insert_one_hook(item, ne, pr->cmdlist, state);
108 break;
109 }
110 } else {
111 a = options_array_first(o);
112 while (a != NULL) {
113 cmdlist = options_array_item_value(a)->cmdlist;
114 item = notify_insert_one_hook(item, ne, cmdlist, state);
115 a = options_array_next(a);
116 }
117 }
118
119 cmdq_free_state(state);
120 }
121
122 static enum cmd_retval
notify_callback(struct cmdq_item * item,void * data)123 notify_callback(struct cmdq_item *item, void *data)
124 {
125 struct notify_entry *ne = data;
126
127 log_debug("%s: %s", __func__, ne->name);
128
129 if (strcmp(ne->name, "pane-mode-changed") == 0)
130 control_notify_pane_mode_changed(ne->pane);
131 if (strcmp(ne->name, "window-layout-changed") == 0)
132 control_notify_window_layout_changed(ne->window);
133 if (strcmp(ne->name, "window-pane-changed") == 0)
134 control_notify_window_pane_changed(ne->window);
135 if (strcmp(ne->name, "window-unlinked") == 0)
136 control_notify_window_unlinked(ne->session, ne->window);
137 if (strcmp(ne->name, "window-linked") == 0)
138 control_notify_window_linked(ne->session, ne->window);
139 if (strcmp(ne->name, "window-renamed") == 0)
140 control_notify_window_renamed(ne->window);
141 if (strcmp(ne->name, "client-session-changed") == 0)
142 control_notify_client_session_changed(ne->client);
143 if (strcmp(ne->name, "client-detached") == 0)
144 control_notify_client_detached(ne->client);
145 if (strcmp(ne->name, "session-renamed") == 0)
146 control_notify_session_renamed(ne->session);
147 if (strcmp(ne->name, "session-created") == 0)
148 control_notify_session_created(ne->session);
149 if (strcmp(ne->name, "session-closed") == 0)
150 control_notify_session_closed(ne->session);
151 if (strcmp(ne->name, "session-window-changed") == 0)
152 control_notify_session_window_changed(ne->session);
153 if (strcmp(ne->name, "paste-buffer-changed") == 0)
154 control_notify_paste_buffer_changed(ne->pbname);
155 if (strcmp(ne->name, "paste-buffer-deleted") == 0)
156 control_notify_paste_buffer_deleted(ne->pbname);
157
158 notify_insert_hook(item, ne);
159
160 if (ne->client != NULL)
161 server_client_unref(ne->client);
162 if (ne->session != NULL)
163 session_remove_ref(ne->session, __func__);
164 if (ne->window != NULL)
165 window_remove_ref(ne->window, __func__);
166
167 if (ne->fs.s != NULL)
168 session_remove_ref(ne->fs.s, __func__);
169
170 format_free(ne->formats);
171 free(__UNCONST(ne->name));
172 free(__UNCONST(ne->pbname));
173 free(ne);
174
175 return (CMD_RETURN_NORMAL);
176 }
177
178 static void
notify_add(const char * name,struct cmd_find_state * fs,struct client * c,struct session * s,struct window * w,struct window_pane * wp,const char * pbname)179 notify_add(const char *name, struct cmd_find_state *fs, struct client *c,
180 struct session *s, struct window *w, struct window_pane *wp,
181 const char *pbname)
182 {
183 struct notify_entry *ne;
184 struct cmdq_item *item;
185
186 item = cmdq_running(NULL);
187 if (item != NULL && (cmdq_get_flags(item) & CMDQ_STATE_NOHOOKS))
188 return;
189
190 ne = xcalloc(1, sizeof *ne);
191 ne->name = xstrdup(name);
192
193 ne->client = c;
194 ne->session = s;
195 ne->window = w;
196 ne->pane = (wp != NULL ? (int)wp->id : -1);
197 ne->pbname = (pbname != NULL ? xstrdup(pbname) : NULL);
198
199 ne->formats = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
200 format_add(ne->formats, "hook", "%s", name);
201 if (c != NULL)
202 format_add(ne->formats, "hook_client", "%s", c->name);
203 if (s != NULL) {
204 format_add(ne->formats, "hook_session", "$%u", s->id);
205 format_add(ne->formats, "hook_session_name", "%s", s->name);
206 }
207 if (w != NULL) {
208 format_add(ne->formats, "hook_window", "@%u", w->id);
209 format_add(ne->formats, "hook_window_name", "%s", w->name);
210 }
211 if (wp != NULL)
212 format_add(ne->formats, "hook_pane", "%%%d", wp->id);
213 format_log_debug(ne->formats, __func__);
214
215 if (c != NULL)
216 c->references++;
217 if (s != NULL)
218 session_add_ref(s, __func__);
219 if (w != NULL)
220 window_add_ref(w, __func__);
221
222 cmd_find_copy_state(&ne->fs, fs);
223 if (ne->fs.s != NULL) /* cmd_find_valid_state needs session */
224 session_add_ref(ne->fs.s, __func__);
225
226 cmdq_append(NULL, cmdq_get_callback(notify_callback, ne));
227 }
228
229 void
notify_hook(struct cmdq_item * item,const char * name)230 notify_hook(struct cmdq_item *item, const char *name)
231 {
232 struct cmd_find_state *target = cmdq_get_target(item);
233 struct notify_entry ne;
234
235 memset(&ne, 0, sizeof ne);
236
237 ne.name = name;
238 cmd_find_copy_state(&ne.fs, target);
239
240 ne.client = cmdq_get_client(item);
241 ne.session = target->s;
242 ne.window = target->w;
243 ne.pane = (target->wp != NULL ? (int)target->wp->id : -1);
244
245 ne.formats = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
246 format_add(ne.formats, "hook", "%s", name);
247 format_log_debug(ne.formats, __func__);
248
249 notify_insert_hook(item, &ne);
250 format_free(ne.formats);
251 }
252
253 void
notify_client(const char * name,struct client * c)254 notify_client(const char *name, struct client *c)
255 {
256 struct cmd_find_state fs;
257
258 cmd_find_from_client(&fs, c, 0);
259 notify_add(name, &fs, c, NULL, NULL, NULL, NULL);
260 }
261
262 void
notify_session(const char * name,struct session * s)263 notify_session(const char *name, struct session *s)
264 {
265 struct cmd_find_state fs;
266
267 if (session_alive(s))
268 cmd_find_from_session(&fs, s, 0);
269 else
270 cmd_find_from_nothing(&fs, 0);
271 notify_add(name, &fs, NULL, s, NULL, NULL, NULL);
272 }
273
274 void
notify_winlink(const char * name,struct winlink * wl)275 notify_winlink(const char *name, struct winlink *wl)
276 {
277 struct cmd_find_state fs;
278
279 cmd_find_from_winlink(&fs, wl, 0);
280 notify_add(name, &fs, NULL, wl->session, wl->window, NULL, NULL);
281 }
282
283 void
notify_session_window(const char * name,struct session * s,struct window * w)284 notify_session_window(const char *name, struct session *s, struct window *w)
285 {
286 struct cmd_find_state fs;
287
288 cmd_find_from_session_window(&fs, s, w, 0);
289 notify_add(name, &fs, NULL, s, w, NULL, NULL);
290 }
291
292 void
notify_window(const char * name,struct window * w)293 notify_window(const char *name, struct window *w)
294 {
295 struct cmd_find_state fs;
296
297 cmd_find_from_window(&fs, w, 0);
298 notify_add(name, &fs, NULL, NULL, w, NULL, NULL);
299 }
300
301 void
notify_pane(const char * name,struct window_pane * wp)302 notify_pane(const char *name, struct window_pane *wp)
303 {
304 struct cmd_find_state fs;
305
306 cmd_find_from_pane(&fs, wp, 0);
307 notify_add(name, &fs, NULL, NULL, NULL, wp, NULL);
308 }
309
310 void
notify_paste_buffer(const char * pbname,int deleted)311 notify_paste_buffer(const char *pbname, int deleted)
312 {
313 struct cmd_find_state fs;
314
315 cmd_find_clear_state(&fs, 0);
316 if (deleted) {
317 notify_add("paste-buffer-deleted", &fs, NULL, NULL, NULL, NULL,
318 pbname);
319 } else {
320 notify_add("paste-buffer-changed", &fs, NULL, NULL, NULL, NULL,
321 pbname);
322 }
323 }
324