+#define _GNU_SOURCE
+
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <glob.h>
#include <unistd.h>
#include <fcntl.h>
+#include <signal.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
#include <libubox/blobmsg_json.h>
#include "interface-ip.h"
#include "proto.h"
-static LIST_HEAD(handlers);
static int proto_fd;
struct proto_shell_handler {
struct interface_proto_state proto;
struct proto_shell_handler *handler;
struct blob_attr *config;
+
+ struct device_user l3_dev;
+
+ struct uloop_timeout setup_timeout;
+ struct uloop_process setup_task;
+ struct uloop_process teardown_task;
+ bool teardown_pending;
+ bool teardown_wait_task;
+
+ struct uloop_process proto_task;
};
-#define DUMP_SUFFIX " '' dump"
+static void
+kill_process(struct uloop_process *proc)
+{
+ if (!proc->pending)
+ return;
+
+ kill(proc->pid, SIGTERM);
+ uloop_process_delete(proc);
+}
-static int run_script(const char **argv)
+static int
+start_process(const char **argv, struct uloop_process *proc)
{
- int pid, ret;
+ int pid;
+
+ kill_process(proc);
if ((pid = fork()) < 0)
return -1;
exit(127);
}
- if (waitpid(pid, &ret, 0) == -1)
- ret = -1;
+ if (pid < 0)
+ return -1;
- if (ret > 0)
- return -ret;
+ proc->pid = pid;
+ uloop_process_add(proc);
return 0;
}
{
struct proto_shell_state *state;
struct proto_shell_handler *handler;
- const char *argv[5];
+ struct uloop_process *proc;
+ const char *argv[6];
+ const char *action;
char *config;
- int ret;
+ int ret, i = 0;
state = container_of(proto, struct proto_shell_state, proto);
handler = state->handler;
+ if (cmd == PROTO_CMD_SETUP) {
+ action = "setup";
+ proc = &state->setup_task;
+ } else {
+ action = "teardown";
+ proc = &state->teardown_task;
+ if (state->setup_task.pending && !state->teardown_wait_task) {
+ uloop_timeout_set(&state->setup_timeout, 1000);
+ kill(state->setup_task.pid, SIGTERM);
+ state->teardown_pending = true;
+ return 0;
+ }
+ }
+
config = blobmsg_format_json(state->config, true);
if (!config)
return -1;
- argv[0] = handler->script_name;
- argv[1] = handler->proto.name;
- argv[2] = "teardown";
- argv[3] = config;
- argv[4] = NULL;
-
- switch(cmd) {
- case PROTO_CMD_SETUP:
- argv[2] = "setup";
- /* fall through */
- case PROTO_CMD_TEARDOWN:
- ret = run_script(argv);
- break;
- }
+ argv[i++] = handler->script_name;
+ argv[i++] = handler->proto.name;
+ argv[i++] = action;
+ argv[i++] = proto->iface->name;
+ argv[i++] = config;
+ if (proto->iface->main_dev.dev)
+ argv[i++] = proto->iface->main_dev.dev->ifname;
+ argv[i] = NULL;
+ ret = start_process(argv, proc);
free(config);
return ret;
}
static void
+proto_shell_setup_timeout_cb(struct uloop_timeout *timeout)
+{
+ struct proto_shell_state *state;
+
+ state = container_of(timeout, struct proto_shell_state, setup_timeout);
+ kill(state->setup_task.pid, SIGKILL);
+}
+
+static void
+proto_shell_setup_cb(struct uloop_process *p, int ret)
+{
+ 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);
+ }
+}
+
+static void
+proto_shell_teardown_cb(struct uloop_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;
+
+ kill_process(&state->proto_task);
+
+ if (state->l3_dev.dev)
+ device_remove_user(&state->l3_dev);
+
+ state->proto.proto_event(&state->proto, IFPEV_DOWN);
+}
+
+static void
+proto_shell_task_cb(struct uloop_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.pending)
+ return;
+
+ if (teardown_wait_task) {
+ proto_shell_teardown_cb(&state->teardown_task, 0);
+ return;
+ }
+
+ state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
+ proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
+}
+
+static void
proto_shell_free(struct interface_proto_state *proto)
{
struct proto_shell_state *state;
free(state);
}
+static void
+proto_shell_parse_addr_list(struct interface *iface, 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(&iface->proto_addr, &addr->node);
+ }
+}
+
+enum {
+ ROUTE_TARGET,
+ ROUTE_MASK,
+ ROUTE_GATEWAY,
+ ROUTE_DEVICE,
+ __ROUTE_LAST
+};
+
+static const struct blobmsg_policy route_attr[__ROUTE_LAST] = {
+ [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
+ [ROUTE_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_INT32 },
+ [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
+ [ROUTE_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
+};
+
+static void
+parse_route(struct interface *iface, struct blob_attr *attr, bool v6)
+{
+ struct blob_attr *tb[__ROUTE_LAST], *cur;
+ struct device_route *route;
+ int af = v6 ? AF_INET6 : AF_INET;
+
+ blobmsg_parse(route_attr, __ROUTE_LAST, tb, blobmsg_data(attr), blobmsg_data_len(attr));
+
+ if (!tb[ROUTE_GATEWAY] && !tb[ROUTE_DEVICE])
+ return;
+
+ route = calloc(1, sizeof(*route));
+ if (!route)
+ return;
+
+ route->mask = v6 ? 128 : 32;
+ if ((cur = tb[ROUTE_MASK]) != NULL) {
+ route->mask = blobmsg_get_u32(cur);
+ if (route->mask > v6 ? 128 : 32)
+ goto error;
+ }
+
+ if ((cur = tb[ROUTE_TARGET]) != NULL) {
+ if (!inet_pton(af, blobmsg_data(cur), &route->addr)) {
+ DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
+ goto error;
+ }
+ }
+
+ if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
+ if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
+ DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
+ goto error;
+ }
+ }
+
+ if ((cur = tb[ROUTE_DEVICE]) != NULL)
+ route->device = device_get(blobmsg_data(cur), true);
+
+ vlist_add(&iface->proto_route, &route->node);
+ return;
+
+error:
+ free(route);
+}
+
+static void
+proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
+ bool v6)
+{
+ struct blob_attr *cur;
+ int rem;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE) {
+ DPRINTF("Ignore wrong route type: %d\n", blobmsg_type(cur));
+ continue;
+ }
+
+ parse_route(iface, cur, v6);
+ }
+}
+
+
+enum {
+ NOTIFY_ACTION,
+ NOTIFY_COMMAND,
+ NOTIFY_SIGNAL,
+ NOTIFY_LINK_UP,
+ NOTIFY_IFNAME,
+ NOTIFY_ADDR_EXT,
+ NOTIFY_IPADDR,
+ NOTIFY_IP6ADDR,
+ NOTIFY_ROUTES,
+ NOTIFY_ROUTES6,
+ NOTIFY_DNS,
+ __NOTIFY_LAST
+};
+
+static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
+ [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
+ [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
+ [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
+ [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 },
+};
+
+static int
+proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ struct blob_attr *cur;
+ bool addr_ext = false;
+ bool up;
+
+ if (!tb[NOTIFY_LINK_UP])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ up = blobmsg_get_bool(tb[NOTIFY_LINK_UP]);
+ if (!up) {
+ state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
+ return 0;
+ }
+
+ if (!tb[NOTIFY_IFNAME])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (!state->l3_dev.dev) {
+ device_add_user(&state->l3_dev,
+ device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
+ device_claim(&state->l3_dev);
+ state->proto.iface->l3_dev = &state->l3_dev;
+ }
+
+ interface_ip_update_start(state->proto.iface);
+
+ if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
+ addr_ext = blobmsg_get_bool(cur);
+
+ if ((cur = tb[NOTIFY_IPADDR]) != NULL)
+ proto_shell_parse_addr_list(state->proto.iface, cur, false, addr_ext);
+
+ if ((cur = tb[NOTIFY_IP6ADDR]) != NULL)
+ proto_shell_parse_addr_list(state->proto.iface, cur, true, addr_ext);
+
+ if ((cur = tb[NOTIFY_ROUTES]) != NULL)
+ proto_shell_parse_route_list(state->proto.iface, cur, false);
+
+ 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(state->proto.iface, cur);
+
+ interface_ip_update_complete(state->proto.iface);
+
+ state->proto.proto_event(&state->proto, IFPEV_UP);
+
+ return 0;
+}
+
+static int
+proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ struct blob_attr *cur;
+ char *argv[64];
+ int argc = 0;
+ int rem;
+
+ if (!tb[NOTIFY_COMMAND])
+ goto error;
+
+ blobmsg_for_each_attr(cur, tb[NOTIFY_COMMAND], rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ goto error;
+
+ if (!blobmsg_check_attr(cur, NULL))
+ goto error;
+
+ argv[argc++] = blobmsg_data(cur);
+ if (argc == ARRAY_SIZE(argv) - 1)
+ goto error;
+ }
+ argv[argc] = NULL;
+ start_process((const char **) argv, &state->proto_task);
+
+ return 0;
+
+error:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+}
+
+static int
+proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ unsigned int signal = ~0;
+
+ if (tb[NOTIFY_SIGNAL])
+ signal = blobmsg_get_u32(tb[NOTIFY_SIGNAL]);
+
+ if (signal > 31)
+ signal = SIGTERM;
+
+ if (state->proto_task.pending) {
+ kill(state->proto_task.pid, signal);
+ state->teardown_wait_task = true;
+ }
+
+ return 0;
+}
+
+static int
+proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
+{
+ struct proto_shell_state *state;
+ struct blob_attr *tb[__NOTIFY_LAST];
+
+ state = container_of(proto, struct proto_shell_state, proto);
+
+ blobmsg_parse(notify_attr, __NOTIFY_LAST, tb, blob_data(attr), blob_len(attr));
+ if (!tb[NOTIFY_ACTION])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ switch(blobmsg_get_u32(tb[NOTIFY_ACTION])) {
+ case 0:
+ return proto_shell_update_link(state, tb);
+ case 1:
+ return proto_shell_run_command(state, tb);
+ case 2:
+ return proto_shell_kill_command(state, tb);
+ default:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+ }
+}
+
struct interface_proto_state *
proto_shell_attach(const struct proto_handler *h, struct interface *iface,
struct blob_attr *attr)
memcpy(state->config, attr, blob_pad_len(attr));
state->proto.free = proto_shell_free;
- state->proto.handler = proto_shell_handler;
+ 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->teardown_task.cb = proto_shell_teardown_cb;
+ state->proto_task.cb = proto_shell_task_cb;
state->handler = container_of(h, struct proto_shell_handler, proto);
return &state->proto;
return NULL;
}
+static json_object *
+check_type(json_object *obj, json_type type)
+{
+ if (!obj)
+ return NULL;
+
+ if (json_object_get_type(obj) != type)
+ return NULL;
+
+ return obj;
+}
+
+static inline json_object *
+get_field(json_object *obj, const char *name, json_type type)
+{
+ return check_type(json_object_object_get(obj, name), type);
+}
+
static char *
-proto_shell_parse_config(struct config_param_list *config, struct json_object *obj)
+proto_shell_parse_config(struct config_param_list *config, json_object *obj)
{
struct blobmsg_policy *attrs;
char *str_buf, *str_cur;
int str_len = 0;
int i;
- attrs = calloc(1, sizeof(*attrs));
+ config->n_params = json_object_array_length(obj);
+ attrs = calloc(1, sizeof(*attrs) * config->n_params);
if (!attrs)
return NULL;
- config->n_params = json_object_array_length(obj);
config->params = attrs;
for (i = 0; i < config->n_params; i++) {
- struct json_object *cur, *name, *type;
+ json_object *cur, *name, *type;
- cur = json_object_array_get_idx(obj, i);
- if (!cur || json_object_get_type(cur) != json_type_array)
+ cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
+ if (!cur)
goto error;
- name = json_object_array_get_idx(cur, 0);
- if (!name || json_object_get_type(name) != json_type_string)
+ name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
+ if (!name)
goto error;
- type = json_object_array_get_idx(cur, 1);
- if (!type || json_object_get_type(type) != json_type_int)
+ type = check_type(json_object_array_get_idx(cur, 1), json_type_int);
+ if (!type)
goto error;
attrs[i].name = json_object_get_string(name);
if (attrs[i].type > BLOBMSG_TYPE_LAST)
goto error;
- str_len += strlen(attrs[i].name + 1);
+ str_len += strlen(attrs[i].name) + 1;
}
str_buf = malloc(str_len);
}
static void
-proto_shell_add_handler(const char *script, struct json_object *obj)
+proto_shell_add_handler(const char *script, json_object *obj)
{
struct proto_shell_handler *handler;
struct proto_handler *proto;
const char *name;
char *str;
- if (json_object_get_type(obj) != json_type_object)
+ if (!check_type(obj, json_type_object))
return;
- tmp = json_object_object_get(obj, "name");
- if (!tmp || json_object_get_type(tmp) != json_type_string)
+ tmp = get_field(obj, "name", json_type_string);
+ if (!tmp)
return;
name = json_object_get_string(tmp);
proto->config_params = &handler->config;
proto->attach = proto_shell_attach;
- config = json_object_object_get(obj, "config");
- if (config && json_object_get_type(config) == json_type_array)
+ tmp = get_field(obj, "no-device", json_type_boolean);
+ if (tmp && json_object_get_boolean(tmp))
+ handler->proto.flags |= PROTO_FLAG_NODEV;
+
+ config = get_field(obj, "config", json_type_array);
+ if (config)
handler->config_buf = proto_shell_parse_config(&handler->config, config);
DPRINTF("Add handler for script %s: %s\n", script, proto->name);
static void proto_shell_add_script(const char *name)
{
struct json_tokener *tok = NULL;
- struct json_object *obj;
+ json_object *obj;
static char buf[512];
char *start, *end, *cmd;
FILE *f;
int buflen, len;
+#define DUMP_SUFFIX " '' dump"
+
cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
sprintf(cmd, "%s" DUMP_SUFFIX, name);
projects / project / netifd.git / blobdiff