proto: move the dns search option handling to the core
[project/netifd.git] / proto-shell.c
index 51a6dac..7aecf84 100644 (file)
 
 static struct netifd_fd proto_fd;
 
+enum proto_shell_sm {
+       S_IDLE,
+       S_SETUP,
+       S_SETUP_ABORT,
+       S_TEARDOWN,
+};
+
 struct proto_shell_handler {
        struct list_head list;
        struct proto_handler proto;
@@ -36,13 +43,14 @@ struct proto_shell_state {
 
        struct device_user l3_dev;
 
-       struct uloop_timeout setup_timeout;
-       struct netifd_process setup_task;
-       struct netifd_process teardown_task;
-       bool teardown_pending;
-       bool teardown_wait_task;
+       struct uloop_timeout teardown_timeout;
 
+       struct netifd_process script_task;
        struct netifd_process proto_task;
+
+       enum proto_shell_sm sm;
+       bool proto_task_killed;
+
        int last_error;
 };
 
@@ -62,24 +70,33 @@ proto_shell_handler(struct interface_proto_state *proto,
 
        state = container_of(proto, struct proto_shell_state, proto);
        handler = state->handler;
+       proc = &state->script_task;
 
        if (cmd == PROTO_CMD_SETUP) {
                action = "setup";
-               proc = &state->setup_task;
                state->last_error = -1;
        } else {
-               action = "teardown";
-               proc = &state->teardown_task;
-               if (state->setup_task.uloop.pending && !state->teardown_wait_task) {
-                       uloop_timeout_set(&state->setup_timeout, 1000);
-                       kill(state->setup_task.uloop.pid, SIGTERM);
-                       state->teardown_pending = true;
+               if (state->sm == S_TEARDOWN)
+                       return 0;
+
+               if (state->script_task.uloop.pending) {
+                       if (state->sm != S_SETUP_ABORT) {
+                               uloop_timeout_set(&state->teardown_timeout, 1000);
+                               kill(state->script_task.uloop.pid, SIGTERM);
+                               if (state->proto_task.uloop.pending)
+                                       kill(state->proto_task.uloop.pid, SIGTERM);
+                               state->sm = S_SETUP_ABORT;
+                       }
                        return 0;
                }
+
+               action = "teardown";
+               state->sm = S_TEARDOWN;
                if (state->last_error >= 0) {
                        snprintf(error_buf, sizeof(error_buf), "ERROR=%d", state->last_error);
                        envp[j++] = error_buf;
                }
+               uloop_timeout_set(&state->teardown_timeout, 5000);
        }
 
        config = blobmsg_format_json(state->config, true);
@@ -103,62 +120,79 @@ proto_shell_handler(struct interface_proto_state *proto,
 }
 
 static void
-proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
+proto_shell_task_finish(struct proto_shell_state *state,
+                       struct netifd_process *task)
 {
-       struct proto_shell_state *state;
+       switch (state->sm) {
+       case S_IDLE:
+               if (task == &state->proto_task)
+                       state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
+               /* fall through */
+       case S_SETUP:
+               if (task == &state->proto_task)
+                       proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN,
+                                           false);
+               break;
+
+       case S_SETUP_ABORT:
+               if (state->script_task.uloop.pending ||
+                   state->proto_task.uloop.pending)
+                       break;
+
+               uloop_timeout_cancel(&state->teardown_timeout);
+               state->sm = S_IDLE;
+               proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
+               break;
+
+       case S_TEARDOWN:
+               if (state->script_task.uloop.pending)
+                       break;
 
-       state = container_of(timeout, struct proto_shell_state, setup_timeout);
-       kill(state->setup_task.uloop.pid, SIGKILL);
+               if (state->proto_task.uloop.pending) {
+                       if (!state->proto_task_killed)
+                               kill(state->proto_task.uloop.pid, SIGTERM);
+                       break;
+               }
+
+               uloop_timeout_cancel(&state->teardown_timeout);
+               state->sm = S_IDLE;
+               state->proto.proto_event(&state->proto, IFPEV_DOWN);
+               break;
+       }
 }
 
 static void
-proto_shell_setup_cb(struct netifd_process *p, int ret)
+proto_shell_teardown_timeout_cb(struct uloop_timeout *timeout)
 {
        struct proto_shell_state *state;
 
-       state = container_of(p, struct proto_shell_state, setup_task);
-       uloop_timeout_cancel(&state->setup_timeout);
-       if (state->teardown_pending) {
-               state->teardown_pending = false;
-               proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
-       }
+       state = container_of(timeout, struct proto_shell_state, teardown_timeout);
+
+       netifd_kill_process(&state->script_task);
+       netifd_kill_process(&state->proto_task);
+       proto_shell_task_finish(state, NULL);
 }
 
 static void
-proto_shell_teardown_cb(struct netifd_process *p, int ret)
+proto_shell_script_cb(struct netifd_process *p, int ret)
 {
        struct proto_shell_state *state;
 
-       state = container_of(p, struct proto_shell_state, teardown_task);
-
-       if (state->teardown_wait_task)
-               return;
-
-       netifd_kill_process(&state->proto_task);
-       state->proto.proto_event(&state->proto, IFPEV_DOWN);
+       state = container_of(p, struct proto_shell_state, script_task);
+       proto_shell_task_finish(state, p);
 }
 
 static void
 proto_shell_task_cb(struct netifd_process *p, int ret)
 {
        struct proto_shell_state *state;
-       bool teardown_wait_task;
 
        state = container_of(p, struct proto_shell_state, proto_task);
 
-       teardown_wait_task = state->teardown_wait_task;
-       state->teardown_wait_task = false;
-       if (state->teardown_pending || state->teardown_task.uloop.pending)
-               return;
+       if (state->sm == S_IDLE || state->sm == S_SETUP)
+               state->last_error = WEXITSTATUS(ret);
 
-       if (teardown_wait_task) {
-               proto_shell_teardown_cb(&state->teardown_task, 0);
-               return;
-       }
-
-       state->last_error = WEXITSTATUS(ret);
-       state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
-       proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
+       proto_shell_task_finish(state, p);
 }
 
 static void
@@ -172,33 +206,6 @@ proto_shell_free(struct interface_proto_state *proto)
 }
 
 static void
-proto_shell_parse_addr_list(struct interface_ip_settings *ip, struct blob_attr *attr,
-                           bool v6, bool external)
-{
-       struct device_addr *addr;
-       struct blob_attr *cur;
-       int rem;
-
-       blobmsg_for_each_attr(cur, attr, rem) {
-               if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
-                       DPRINTF("Ignore wrong address type: %d\n", blobmsg_type(cur));
-                       continue;
-               }
-
-               addr = proto_parse_ip_addr_string(blobmsg_data(cur), v6, v6 ? 32 : 128);
-               if (!addr) {
-                       DPRINTF("Failed to parse IP address string: %s\n", (char *) blobmsg_data(cur));
-                       continue;
-               }
-
-               if (external)
-                       addr->flags |= DEVADDR_EXTERNAL;
-
-               vlist_add(&ip->addr, &addr->node);
-       }
-}
-
-static void
 proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
                             bool v6)
 {
@@ -225,12 +232,8 @@ enum {
        NOTIFY_LINK_UP,
        NOTIFY_IFNAME,
        NOTIFY_ADDR_EXT,
-       NOTIFY_IPADDR,
-       NOTIFY_IP6ADDR,
        NOTIFY_ROUTES,
        NOTIFY_ROUTES6,
-       NOTIFY_DNS,
-       NOTIFY_DNS_SEARCH,
        __NOTIFY_LAST
 };
 
@@ -244,18 +247,14 @@ static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
        [NOTIFY_LINK_UP] = { .name = "link-up", .type = BLOBMSG_TYPE_BOOL },
        [NOTIFY_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
        [NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
-       [NOTIFY_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
-       [NOTIFY_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
        [NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
        [NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
-       [NOTIFY_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
-       [NOTIFY_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
 };
 
 static int
-proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
+proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data, struct blob_attr **tb)
 {
-       struct interface_ip_settings *ip;
+       struct interface *iface = state->proto.iface;
        struct blob_attr *cur;
        int dev_create = 1;
        bool addr_ext = false;
@@ -277,7 +276,7 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
        }
 
        if (!tb[NOTIFY_IFNAME]) {
-               if (!state->proto.iface->main_dev.dev)
+               if (!iface->main_dev.dev)
                        return UBUS_STATUS_INVALID_ARGUMENT;
        } else {
                if (state->l3_dev.dev)
@@ -285,18 +284,12 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
 
                device_add_user(&state->l3_dev,
                        device_get(blobmsg_data(tb[NOTIFY_IFNAME]), dev_create));
-               state->proto.iface->l3_dev = &state->l3_dev;
+               iface->l3_dev = &state->l3_dev;
                device_claim(&state->l3_dev);
        }
 
-       ip = &state->proto.iface->proto_ip;
-       interface_update_start(state->proto.iface);
-
-       if ((cur = tb[NOTIFY_IPADDR]) != NULL)
-               proto_shell_parse_addr_list(ip, cur, false, addr_ext);
-
-       if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
-               proto_shell_parse_addr_list(ip, cur, true, addr_ext);
+       interface_update_start(iface);
+       proto_apply_ip_settings(iface, data, addr_ext);
 
        if ((cur = tb[NOTIFY_ROUTES]) != NULL)
                proto_shell_parse_route_list(state->proto.iface, cur, false);
@@ -304,12 +297,6 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
        if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
                proto_shell_parse_route_list(state->proto.iface, cur, true);
 
-       if ((cur = tb[NOTIFY_DNS]) != NULL)
-               interface_add_dns_server_list(ip, cur);
-
-       if ((cur = tb[NOTIFY_DNS_SEARCH]) != NULL)
-               interface_add_dns_search_list(ip, cur);
-
        interface_update_complete(state->proto.iface);
 
        state->proto.proto_event(&state->proto, IFPEV_UP);
@@ -379,8 +366,8 @@ proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
                signal = SIGTERM;
 
        if (state->proto_task.uloop.pending) {
+               state->proto_task_killed = true;
                kill(state->proto_task.uloop.pid, signal);
-               state->teardown_wait_task = true;
        }
 
        return 0;
@@ -453,7 +440,7 @@ proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
 
        switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
        case 0:
-               return proto_shell_update_link(state, tb);
+               return proto_shell_update_link(state, attr, tb);
        case 1:
                return proto_shell_run_command(state, tb);
        case 2:
@@ -484,13 +471,10 @@ proto_shell_attach(const struct proto_handler *h, struct interface *iface,
        state->proto.free = proto_shell_free;
        state->proto.notify = proto_shell_notify;
        state->proto.cb = proto_shell_handler;
-       state->setup_timeout.cb = proto_shell_setup_timeout_cb;
-       state->setup_task.cb = proto_shell_setup_cb;
-       state->setup_task.dir_fd = proto_fd.fd;
-       state->setup_task.log_prefix = iface->name;
-       state->teardown_task.cb = proto_shell_teardown_cb;
-       state->teardown_task.dir_fd = proto_fd.fd;
-       state->teardown_task.log_prefix = iface->name;
+       state->teardown_timeout.cb = proto_shell_teardown_timeout_cb;
+       state->script_task.cb = proto_shell_script_cb;
+       state->script_task.dir_fd = proto_fd.fd;
+       state->script_task.log_prefix = iface->name;
        state->proto_task.cb = proto_shell_task_cb;
        state->proto_task.dir_fd = proto_fd.fd;
        state->proto_task.log_prefix = iface->name;