10 #include "kernel/menu.h"
11 #include "kernel/event.h"
13 static char *PLUGIN_NAME = "fifo_menu";
15 typedef struct Fifo_Menu_Data{
17 char *buf; /* buffer to hold partially read menu */
18 unsigned long buflen; /* how many bytes are in the buffer */
19 int fd; /* file descriptor to read menu from */
20 event_fd_handler *handler;
23 #define FIFO_MENU(m) ((Menu *)m)
24 #define FIFO_MENU_DATA(m) ((Fifo_Menu_Data *)((Menu *)m)->plugin_data)
27 void fifo_menu_clean_up(Menu *m) {
28 if (FIFO_MENU_DATA(m)->buf != NULL) {
29 g_free(FIFO_MENU_DATA(m)->buf);
30 FIFO_MENU_DATA(m)->buf = NULL;
31 FIFO_MENU_DATA(m)->buflen = 0;
34 if (FIFO_MENU_DATA(m)->fd != -1) {
35 close(FIFO_MENU_DATA(m)->fd);
36 FIFO_MENU_DATA(m)->fd = -1;
40 void plugin_setup_config() { }
43 void plugin_shutdown() { }
45 void fifo_menu_handler(int fd, Menu *menu) {
47 unsigned long num_read;
49 /* because gdb is dumb */
50 Fifo_Menu_Data *d = FIFO_MENU_DATA(menu);
53 /* if the menu is shown this will go into busy loop :(
56 unsigned long num_realloc;
57 /* if we have less than a quarter BUFSIZ left, allocate more */
58 num_realloc = (BUFSIZ - (FIFO_MENU_DATA(menu)->buflen % BUFSIZ) <
62 tmpbuf = g_try_realloc(FIFO_MENU_DATA(menu)->buf,
63 FIFO_MENU_DATA(menu)->buflen + num_realloc);
66 g_warning("Unable to allocate memory for read()");
70 FIFO_MENU_DATA(menu)->buf = tmpbuf;
73 FIFO_MENU_DATA(menu)->buf + FIFO_MENU_DATA(menu)->buflen,
76 if (num_read == 0) { /* eof */
77 unsigned long count = 0;
85 (found = strchr(&FIFO_MENU_DATA(menu)->buf[count], '\n'))) {
86 FIFO_MENU_DATA(menu)->buf
87 [found - FIFO_MENU_DATA(menu)->buf] = '\0';
89 menu_entry_new_separator
90 (&FIFO_MENU_DATA(menu)->buf[count]));
91 count = found - FIFO_MENU_DATA(menu)->buf + 1;
94 FIFO_MENU_DATA(menu)->buf[FIFO_MENU_DATA(menu)->buflen] = '\0';
95 fifo_menu_clean_up(menu);
97 event_remove_fd(FIFO_MENU_DATA(menu)->handler->fd);
99 if ((FIFO_MENU_DATA(menu)->fd =
100 open(FIFO_MENU_DATA(menu)->fifo, O_NONBLOCK | O_RDONLY)) == -1) {
101 g_warning("Can't reopen FIFO");
102 fifo_menu_clean_up(menu);
106 FIFO_MENU_DATA(menu)->handler->fd = FIFO_MENU_DATA(menu)->fd;
108 event_add_fd_handler(FIFO_MENU_DATA(menu)->handler);
109 } else if (num_read > 0) {
110 FIFO_MENU_DATA(menu)->buflen += num_read;
111 FIFO_MENU_DATA(menu)->buf[FIFO_MENU_DATA(menu)->buflen] = '\0';
116 void plugin_destroy (Menu *m)
118 fifo_menu_clean_up(m);
119 if (FIFO_MENU_DATA(m)->handler != NULL) {
120 g_free(FIFO_MENU_DATA(m)->handler);
121 FIFO_MENU_DATA(m)->handler = NULL;
124 if (FIFO_MENU_DATA(m)->fifo != NULL) {
125 g_free(FIFO_MENU_DATA(m)->fifo);
126 FIFO_MENU_DATA(m)->fifo = NULL;
129 g_free(m->plugin_data);
134 void *plugin_create() /* TODO: need config */
140 Fifo_Menu_Data *d = g_new(Fifo_Menu_Data, 1);
141 Menu *m = menu_new("", PLUGIN_NAME, NULL);
148 m->plugin = PLUGIN_NAME;
152 m->plugin_data = (void *)d;
154 dir = g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME, NULL);
156 if (mkdir(dir, S_IRWXU | S_IRWXG | S_IRWXO) == -1 && errno != EEXIST) {
157 /* technically, if ~/.openbox/fifo_menu exists and isn't a directory
158 this will fail, but we don't care because mkfifo will fail and warn
160 g_warning("Can't create %s: %s", dir, strerror(errno));
166 fifo = g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME,
168 if (mkfifo(fifo, S_IRUSR | S_IWUSR |
169 S_IRGRP | S_IWGRP | /* let umask do its thing */
170 S_IROTH | S_IWOTH) == -1 && errno != EEXIST) {
171 g_warning("Can't create FIFO %s: %s", fifo, strerror(errno));
178 /* open in non-blocking mode so we don't wait for a process to open FIFO
180 if ((d->fd = open(fifo, O_NONBLOCK | O_RDONLY)) == -1) {
181 g_warning("Can't open FIFO %s: %s", fifo, strerror(errno));
190 h = g_new(event_fd_handler, 1);
193 g_warning("Out of memory");
203 h->handler = fifo_menu_handler;
206 event_add_fd_handler(h);