]>
Dogcows Code - chaz/openbox/blob - menu/fifo_menu.c
5 * Provides a menu from a FIFO located in ~/.openbox/fifo_menu/id
8 * <menu id="fonk" label="fonk" plugin="fifo_menu"></menu>
11 * <item label="GLOVE.png">
12 * <action name="execute">
14 * bsetbg "/home/woodblock/.openbox/backgrounds/GLOVE.png"
20 * If the attribute pid="true" is in the <menu>
24 #include <sys/types.h>
32 #include "kernel/menu.h"
33 #include "kernel/event.h"
35 static char *PLUGIN_NAME
= "fifo_menu";
37 typedef struct Fifo_Menu_Data
{
39 char *buf
; /* buffer to hold partially read menu */
40 unsigned long buflen
; /* how many bytes are in the buffer */
41 int fd
; /* file descriptor to read menu from */
43 event_fd_handler
*handler
;
46 #define FIFO_MENU(m) ((ObMenu *)m)
47 #define FIFO_MENU_DATA(m) ((Fifo_Menu_Data *)((ObMenu *)m)->plugin_data)
50 void fifo_menu_clean_up(ObMenu
*m
) {
51 if (FIFO_MENU_DATA(m
)->buf
!= NULL
) {
52 g_free(FIFO_MENU_DATA(m
)->buf
);
53 FIFO_MENU_DATA(m
)->buf
= NULL
;
54 FIFO_MENU_DATA(m
)->buflen
= 0;
57 if (FIFO_MENU_DATA(m
)->fd
!= -1) {
58 close(FIFO_MENU_DATA(m
)->fd
);
59 FIFO_MENU_DATA(m
)->fd
= -1;
63 void plugin_setup_config() { }
66 void plugin_shutdown() { }
68 void fifo_menu_handler(int fd
, void *d
) {
71 unsigned long num_read
;
73 /* because gdb is dumb */
75 Fifo_Menu_Data
*d
= FIFO_MENU_DATA(menu
);
79 /* if the menu is shown this will go into busy loop :(
82 unsigned long num_realloc
;
83 /* if we have less than a quarter BUFSIZ left, allocate more */
84 num_realloc
= (BUFSIZ
- (FIFO_MENU_DATA(menu
)->buflen
% BUFSIZ
) <
88 tmpbuf
= g_try_realloc(FIFO_MENU_DATA(menu
)->buf
,
89 FIFO_MENU_DATA(menu
)->buflen
+ num_realloc
);
92 g_warning("Unable to allocate memory for read()");
96 FIFO_MENU_DATA(menu
)->buf
= tmpbuf
;
99 FIFO_MENU_DATA(menu
)->buf
+
100 FIFO_MENU_DATA(menu
)->buflen
,
103 if (num_read
== 0) { /* eof */
108 menu
->invalid
= TRUE
;
111 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
115 if (parse_load_mem(FIFO_MENU_DATA(menu
)->buf
,
116 FIFO_MENU_DATA(menu
)->buflen
,
117 "fifo_menu", &doc
, &node
))
118 parse_menu_full(i
, doc
, node
, menu
, FALSE
);
122 fifo_menu_clean_up(menu
);
124 event_remove_fd(FIFO_MENU_DATA(menu
)->handler
->fd
);
126 if ((FIFO_MENU_DATA(menu
)->fd
=
127 open(FIFO_MENU_DATA(menu
)->fifo
,
128 O_NONBLOCK
| O_RDONLY
)) == -1) {
129 g_warning("Can't reopen FIFO");
130 fifo_menu_clean_up(menu
);
134 FIFO_MENU_DATA(menu
)->handler
->fd
= FIFO_MENU_DATA(menu
)->fd
;
136 event_add_fd_handler(FIFO_MENU_DATA(menu
)->handler
);
137 } else if (num_read
> 0) {
138 FIFO_MENU_DATA(menu
)->buflen
+= num_read
;
139 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
144 void plugin_destroy (ObMenu
*m
)
146 fifo_menu_clean_up(m
);
147 if (FIFO_MENU_DATA(m
)->handler
!= NULL
) {
148 g_free(FIFO_MENU_DATA(m
)->handler
);
149 FIFO_MENU_DATA(m
)->handler
= NULL
;
152 if (FIFO_MENU_DATA(m
)->fifo
!= NULL
) {
153 g_free(FIFO_MENU_DATA(m
)->fifo
);
154 FIFO_MENU_DATA(m
)->fifo
= NULL
;
157 if (FIFO_MENU_DATA(m
)->buf
!= NULL
) {
158 g_free(FIFO_MENU_DATA(m
)->buf
);
159 FIFO_MENU_DATA(m
)->buf
= NULL
;
162 g_free(m
->plugin_data
);
167 void *plugin_create(PluginMenuCreateData
*data
)
174 char *label
= NULL
, *id
= NULL
;
175 char *attr_pid
= NULL
;
177 d
= g_new(Fifo_Menu_Data
, 1);
179 parse_attr_string("id", data
->node
, &id
);
180 parse_attr_string("label", data
->node
, &label
);
182 if (parse_attr_string("pid", data
->node
, &attr_pid
) &&
183 g_strcasecmp(attr_pid
, "true") == 0) {
188 m
= menu_new( (label
!= NULL
? label
: ""),
189 (id
!= NULL
? id
: PLUGIN_NAME
),
193 menu_add_entry(data
->parent
, menu_entry_new_submenu(
194 (label
!= NULL
? label
: ""),
204 m
->plugin
= PLUGIN_NAME
;
208 m
->plugin_data
= (void *)d
;
211 dir
= g_build_filename(g_get_home_dir(), ".openbox",
214 if (mkdir(dir
, S_IRWXU
| S_IRWXG
| S_IRWXO
) == -1 && errno
!= EEXIST
) {
215 /* technically, if ~/.openbox/fifo_menu exists and isn't a directory
216 this will fail, but we don't care because mkfifo will fail and warn
218 g_warning("Can't create %s: %s", dir
, strerror(errno
));
226 char *pid
= g_strdup_printf("%s.%d", m
->name
, getpid());
227 fifo
= g_build_filename(g_get_home_dir(), ".openbox",
232 fifo
= g_build_filename(g_get_home_dir(), ".openbox",
237 if (mkfifo(fifo
, S_IRUSR
| S_IWUSR
|
238 S_IRGRP
| S_IWGRP
| /* let umask do its thing */
239 S_IROTH
| S_IWOTH
) == -1 && errno
!= EEXIST
) {
240 g_warning("Can't create FIFO %s: %s", fifo
, strerror(errno
));
247 /* open in non-blocking mode so we don't wait for a process to open FIFO
249 if ((d
->fd
= open(fifo
, O_NONBLOCK
| O_RDONLY
)) == -1) {
250 g_warning("Can't open FIFO %s: %s", fifo
, strerror(errno
));
259 h
= g_new(event_fd_handler
, 1);
262 g_warning("Out of memory");
272 h
->handler
= fifo_menu_handler
;
275 event_add_fd_handler(h
);
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