wpa_supplicant: Initial Revision 0.8.X
Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date: Thu Apr 21 20:41:01 2011 +0300
Enable CONFIG_DRIVER_NL80211=y in the default configuration
nl80211 should be preferred over WEXT with any recent Linux
kernel version.
Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/utils/eloop_none.c b/src/utils/eloop_none.c
new file mode 100644
index 0000000..18eae4e
--- /dev/null
+++ b/src/utils/eloop_none.c
@@ -0,0 +1,401 @@
+/*
+ * Event loop - empty template (basic structure, but no OS specific operations)
+ * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "eloop.h"
+
+
+struct eloop_sock {
+ int sock;
+ void *eloop_data;
+ void *user_data;
+ void (*handler)(int sock, void *eloop_ctx, void *sock_ctx);
+};
+
+struct eloop_timeout {
+ struct os_time time;
+ void *eloop_data;
+ void *user_data;
+ void (*handler)(void *eloop_ctx, void *sock_ctx);
+ struct eloop_timeout *next;
+};
+
+struct eloop_signal {
+ int sig;
+ void *user_data;
+ void (*handler)(int sig, void *eloop_ctx, void *signal_ctx);
+ int signaled;
+};
+
+struct eloop_data {
+ int max_sock, reader_count;
+ struct eloop_sock *readers;
+
+ struct eloop_timeout *timeout;
+
+ int signal_count;
+ struct eloop_signal *signals;
+ int signaled;
+ int pending_terminate;
+
+ int terminate;
+ int reader_table_changed;
+};
+
+static struct eloop_data eloop;
+
+
+int eloop_init(void)
+{
+ memset(&eloop, 0, sizeof(eloop));
+ return 0;
+}
+
+
+int eloop_register_read_sock(int sock,
+ void (*handler)(int sock, void *eloop_ctx,
+ void *sock_ctx),
+ void *eloop_data, void *user_data)
+{
+ struct eloop_sock *tmp;
+
+ tmp = (struct eloop_sock *)
+ realloc(eloop.readers,
+ (eloop.reader_count + 1) * sizeof(struct eloop_sock));
+ if (tmp == NULL)
+ return -1;
+
+ tmp[eloop.reader_count].sock = sock;
+ tmp[eloop.reader_count].eloop_data = eloop_data;
+ tmp[eloop.reader_count].user_data = user_data;
+ tmp[eloop.reader_count].handler = handler;
+ eloop.reader_count++;
+ eloop.readers = tmp;
+ if (sock > eloop.max_sock)
+ eloop.max_sock = sock;
+ eloop.reader_table_changed = 1;
+
+ return 0;
+}
+
+
+void eloop_unregister_read_sock(int sock)
+{
+ int i;
+
+ if (eloop.readers == NULL || eloop.reader_count == 0)
+ return;
+
+ for (i = 0; i < eloop.reader_count; i++) {
+ if (eloop.readers[i].sock == sock)
+ break;
+ }
+ if (i == eloop.reader_count)
+ return;
+ if (i != eloop.reader_count - 1) {
+ memmove(&eloop.readers[i], &eloop.readers[i + 1],
+ (eloop.reader_count - i - 1) *
+ sizeof(struct eloop_sock));
+ }
+ eloop.reader_count--;
+ eloop.reader_table_changed = 1;
+}
+
+
+int eloop_register_timeout(unsigned int secs, unsigned int usecs,
+ void (*handler)(void *eloop_ctx, void *timeout_ctx),
+ void *eloop_data, void *user_data)
+{
+ struct eloop_timeout *timeout, *tmp, *prev;
+
+ timeout = (struct eloop_timeout *) malloc(sizeof(*timeout));
+ if (timeout == NULL)
+ return -1;
+ os_get_time(&timeout->time);
+ timeout->time.sec += secs;
+ timeout->time.usec += usecs;
+ while (timeout->time.usec >= 1000000) {
+ timeout->time.sec++;
+ timeout->time.usec -= 1000000;
+ }
+ timeout->eloop_data = eloop_data;
+ timeout->user_data = user_data;
+ timeout->handler = handler;
+ timeout->next = NULL;
+
+ if (eloop.timeout == NULL) {
+ eloop.timeout = timeout;
+ return 0;
+ }
+
+ prev = NULL;
+ tmp = eloop.timeout;
+ while (tmp != NULL) {
+ if (os_time_before(&timeout->time, &tmp->time))
+ break;
+ prev = tmp;
+ tmp = tmp->next;
+ }
+
+ if (prev == NULL) {
+ timeout->next = eloop.timeout;
+ eloop.timeout = timeout;
+ } else {
+ timeout->next = prev->next;
+ prev->next = timeout;
+ }
+
+ return 0;
+}
+
+
+int eloop_cancel_timeout(void (*handler)(void *eloop_ctx, void *sock_ctx),
+ void *eloop_data, void *user_data)
+{
+ struct eloop_timeout *timeout, *prev, *next;
+ int removed = 0;
+
+ prev = NULL;
+ timeout = eloop.timeout;
+ while (timeout != NULL) {
+ next = timeout->next;
+
+ if (timeout->handler == handler &&
+ (timeout->eloop_data == eloop_data ||
+ eloop_data == ELOOP_ALL_CTX) &&
+ (timeout->user_data == user_data ||
+ user_data == ELOOP_ALL_CTX)) {
+ if (prev == NULL)
+ eloop.timeout = next;
+ else
+ prev->next = next;
+ free(timeout);
+ removed++;
+ } else
+ prev = timeout;
+
+ timeout = next;
+ }
+
+ return removed;
+}
+
+
+int eloop_is_timeout_registered(void (*handler)(void *eloop_ctx,
+ void *timeout_ctx),
+ void *eloop_data, void *user_data)
+{
+ struct eloop_timeout *tmp;
+
+ tmp = eloop.timeout;
+ while (tmp != NULL) {
+ if (tmp->handler == handler &&
+ tmp->eloop_data == eloop_data &&
+ tmp->user_data == user_data)
+ return 1;
+
+ tmp = tmp->next;
+ }
+
+ return 0;
+}
+
+
+/* TODO: replace with suitable signal handler */
+#if 0
+static void eloop_handle_signal(int sig)
+{
+ int i;
+
+ eloop.signaled++;
+ for (i = 0; i < eloop.signal_count; i++) {
+ if (eloop.signals[i].sig == sig) {
+ eloop.signals[i].signaled++;
+ break;
+ }
+ }
+}
+#endif
+
+
+static void eloop_process_pending_signals(void)
+{
+ int i;
+
+ if (eloop.signaled == 0)
+ return;
+ eloop.signaled = 0;
+
+ if (eloop.pending_terminate) {
+ eloop.pending_terminate = 0;
+ }
+
+ for (i = 0; i < eloop.signal_count; i++) {
+ if (eloop.signals[i].signaled) {
+ eloop.signals[i].signaled = 0;
+ eloop.signals[i].handler(eloop.signals[i].sig,
+ eloop.user_data,
+ eloop.signals[i].user_data);
+ }
+ }
+}
+
+
+int eloop_register_signal(int sig,
+ void (*handler)(int sig, void *eloop_ctx,
+ void *signal_ctx),
+ void *user_data)
+{
+ struct eloop_signal *tmp;
+
+ tmp = (struct eloop_signal *)
+ realloc(eloop.signals,
+ (eloop.signal_count + 1) *
+ sizeof(struct eloop_signal));
+ if (tmp == NULL)
+ return -1;
+
+ tmp[eloop.signal_count].sig = sig;
+ tmp[eloop.signal_count].user_data = user_data;
+ tmp[eloop.signal_count].handler = handler;
+ tmp[eloop.signal_count].signaled = 0;
+ eloop.signal_count++;
+ eloop.signals = tmp;
+
+ /* TODO: register signal handler */
+
+ return 0;
+}
+
+
+int eloop_register_signal_terminate(void (*handler)(int sig, void *eloop_ctx,
+ void *signal_ctx),
+ void *user_data)
+{
+#if 0
+ /* TODO: for example */
+ int ret = eloop_register_signal(SIGINT, handler, user_data);
+ if (ret == 0)
+ ret = eloop_register_signal(SIGTERM, handler, user_data);
+ return ret;
+#endif
+ return 0;
+}
+
+
+int eloop_register_signal_reconfig(void (*handler)(int sig, void *eloop_ctx,
+ void *signal_ctx),
+ void *user_data)
+{
+#if 0
+ /* TODO: for example */
+ return eloop_register_signal(SIGHUP, handler, user_data);
+#endif
+ return 0;
+}
+
+
+void eloop_run(void)
+{
+ int i;
+ struct os_time tv, now;
+
+ while (!eloop.terminate &&
+ (eloop.timeout || eloop.reader_count > 0)) {
+ if (eloop.timeout) {
+ os_get_time(&now);
+ if (os_time_before(&now, &eloop.timeout->time))
+ os_time_sub(&eloop.timeout->time, &now, &tv);
+ else
+ tv.sec = tv.usec = 0;
+ }
+
+ /*
+ * TODO: wait for any event (read socket ready, timeout (tv),
+ * signal
+ */
+ os_sleep(1, 0); /* just a dummy wait for testing */
+
+ eloop_process_pending_signals();
+
+ /* check if some registered timeouts have occurred */
+ if (eloop.timeout) {
+ struct eloop_timeout *tmp;
+
+ os_get_time(&now);
+ if (!os_time_before(&now, &eloop.timeout->time)) {
+ tmp = eloop.timeout;
+ eloop.timeout = eloop.timeout->next;
+ tmp->handler(tmp->eloop_data,
+ tmp->user_data);
+ free(tmp);
+ }
+
+ }
+
+ eloop.reader_table_changed = 0;
+ for (i = 0; i < eloop.reader_count; i++) {
+ /*
+ * TODO: call each handler that has pending data to
+ * read
+ */
+ if (0 /* TODO: eloop.readers[i].sock ready */) {
+ eloop.readers[i].handler(
+ eloop.readers[i].sock,
+ eloop.readers[i].eloop_data,
+ eloop.readers[i].user_data);
+ if (eloop.reader_table_changed)
+ break;
+ }
+ }
+ }
+}
+
+
+void eloop_terminate(void)
+{
+ eloop.terminate = 1;
+}
+
+
+void eloop_destroy(void)
+{
+ struct eloop_timeout *timeout, *prev;
+
+ timeout = eloop.timeout;
+ while (timeout != NULL) {
+ prev = timeout;
+ timeout = timeout->next;
+ free(prev);
+ }
+ free(eloop.readers);
+ free(eloop.signals);
+}
+
+
+int eloop_terminated(void)
+{
+ return eloop.terminate;
+}
+
+
+void eloop_wait_for_read_sock(int sock)
+{
+ /*
+ * TODO: wait for the file descriptor to have something available for
+ * reading
+ */
+}