+/*************************************************
+* Return size of queue *
+*************************************************/
+/* Ask the daemon for the queue size */
+
+static uschar *
+fn_queue_size(void)
+{
+struct sockaddr_un sa_un = {.sun_family = AF_UNIX};
+uschar buf[16];
+int fd;
+ssize_t len;
+const uschar * where;
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+uschar * sname;
+#endif
+fd_set fds;
+struct timeval tv;
+
+if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
+ {
+ DEBUG(D_expand) debug_printf(" socket: %s\n", strerror(errno));
+ return NULL;
+ }
+
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
+len = offsetof(struct sockaddr_un, sun_path) + 1
+ + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "exim_%d", getpid());
+#else
+sname = string_sprintf("%s/p_%d", spool_directory, getpid());
+len = offsetof(struct sockaddr_un, sun_path)
+ + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s", sname);
+#endif
+
+if (bind(fd, (const struct sockaddr *)&sa_un, len) < 0)
+ { where = US"bind"; goto bad; }
+
+#ifdef notdef
+debug_printf("local addr '%s%s'\n",
+ *sa_un.sun_path ? "" : "@",
+ sa_un.sun_path + (*sa_un.sun_path ? 0 : 1));
+#endif
+
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
+len = offsetof(struct sockaddr_un, sun_path) + 1
+ + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "%s",
+ expand_string(notifier_socket));
+#else
+len = offsetof(struct sockaddr_un, sun_path)
+ + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s",
+ expand_string(notifier_socket));
+#endif
+
+if (connect(fd, (const struct sockaddr *)&sa_un, len) < 0)
+ { where = US"connect"; goto bad2; }
+
+buf[0] = NOTIFY_QUEUE_SIZE_REQ;
+if (send(fd, buf, 1, 0) < 0) { where = US"send"; goto bad; }
+
+FD_ZERO(&fds); FD_SET(fd, &fds);
+tv.tv_sec = 2; tv.tv_usec = 0;
+if (select(fd + 1, (SELECT_ARG2_TYPE *)&fds, NULL, NULL, &tv) != 1)
+ {
+ DEBUG(D_expand) debug_printf("no daemon response; using local evaluation\n");
+ len = snprintf(CS buf, sizeof(buf), "%u", queue_count_cached());
+ }
+else if ((len = recv(fd, buf, sizeof(buf), 0)) < 0)
+ { where = US"recv"; goto bad2; }
+
+close(fd);
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+Uunlink(sname);
+#endif
+return string_copyn(buf, len);
+
+bad2:
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+ Uunlink(sname);
+#endif
+bad:
+ close(fd);
+ DEBUG(D_expand) debug_printf(" %s: %s\n", where, strerror(errno));
+ return NULL;
+}
+
+
projects / exim.git / blobdiff