+#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, main_fd;
+static struct netifd_fd proto_fd;
struct proto_shell_handler {
struct list_head list;
struct proto_handler proto;
+ struct config_param_list config;
+ char *config_buf;
+ char script_name[];
+};
+
+struct proto_shell_state {
+ 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 netifd_process setup_task;
+ struct netifd_process teardown_task;
+ bool teardown_pending;
+ bool teardown_wait_task;
+
+ struct netifd_process proto_task;
+ int last_error;
};
-#define DUMP_SUFFIX " dump"
+static int
+proto_shell_handler(struct interface_proto_state *proto,
+ enum interface_proto_cmd cmd, bool force)
+{
+ struct proto_shell_state *state;
+ struct proto_shell_handler *handler;
+ struct netifd_process *proc;
+ static char error_buf[32];
+ const char *argv[7];
+ char *envp[2];
+ const char *action;
+ char *config;
+ int ret, i = 0, j = 0;
+
+ state = container_of(proto, struct proto_shell_state, proto);
+ handler = state->handler;
+
+ 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;
+ return 0;
+ }
+ if (state->last_error >= 0) {
+ snprintf(error_buf, sizeof(error_buf), "ERROR=%d", state->last_error);
+ envp[j++] = error_buf;
+ }
+ }
+
+ config = blobmsg_format_json(state->config, true);
+ if (!config)
+ return -1;
-static void proto_shell_add_handler(const char *script, struct json_object *obj)
+ 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;
+ envp[j] = NULL;
+
+ ret = netifd_start_process(argv, envp, 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.uloop.pid, SIGKILL);
+}
+
+static void
+proto_shell_setup_cb(struct netifd_process *p, int ret)
{
- if (json_object_get_type(obj) != json_type_object)
+ 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 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;
- fprintf(stderr, "Add handler for script %s: %s\n", script, json_object_to_json_string(obj));
+ netifd_kill_process(&state->proto_task);
+ state->proto.proto_event(&state->proto, IFPEV_DOWN);
+}
+
+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 (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);
+}
+
+static void
+proto_shell_free(struct interface_proto_state *proto)
+{
+ struct proto_shell_state *state;
+
+ state = container_of(proto, struct proto_shell_state, proto);
+ free(state->config);
+ free(state);
+}
+
+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)
+{
+ 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;
+ }
+
+ interface_ip_add_route(iface, cur, v6);
+ }
+}
+
+enum {
+ NOTIFY_ACTION,
+ NOTIFY_ERROR,
+ NOTIFY_COMMAND,
+ NOTIFY_ENV,
+ NOTIFY_SIGNAL,
+ NOTIFY_LINK_UP,
+ NOTIFY_IFNAME,
+ NOTIFY_ADDR_EXT,
+ NOTIFY_IPADDR,
+ NOTIFY_IP6ADDR,
+ NOTIFY_ROUTES,
+ NOTIFY_ROUTES6,
+ NOTIFY_DNS,
+ NOTIFY_DNS_SEARCH,
+ __NOTIFY_LAST
+};
+
+static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
+ [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
+ [NOTIFY_ERROR] = { .name = "error", .type = BLOBMSG_TYPE_ARRAY },
+ [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
+ [NOTIFY_ENV] = { .name = "env", .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 },
+ [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)
+{
+ struct interface_ip_settings *ip;
+ struct blob_attr *cur;
+ int dev_create = 1;
+ 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 ((cur = tb[NOTIFY_ADDR_EXT]) != NULL) {
+ addr_ext = blobmsg_get_bool(cur);
+ if (addr_ext)
+ dev_create = 2;
+ }
+
+ if (!tb[NOTIFY_IFNAME]) {
+ if (!state->proto.iface->main_dev.dev)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+ } else {
+ if (state->l3_dev.dev)
+ device_remove_user(&state->l3_dev);
+
+ device_add_user(&state->l3_dev,
+ device_get(blobmsg_data(tb[NOTIFY_IFNAME]), dev_create));
+ state->proto.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);
+
+ 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(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);
+
+ return 0;
+}
+
+static bool
+fill_string_list(struct blob_attr *attr, char **argv, int max)
+{
+ struct blob_attr *cur;
+ int argc = 0;
+ int rem;
+
+ if (!attr)
+ goto out;
+
+ blobmsg_for_each_attr(cur, attr, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ return false;
+
+ if (!blobmsg_check_attr(cur, NULL))
+ return false;
+
+ argv[argc++] = blobmsg_data(cur);
+ if (argc == max - 1)
+ return false;
+ }
+
+out:
+ argv[argc] = NULL;
+ return true;
+}
+
+static int
+proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ static char *argv[64];
+ static char *env[32];
+
+ if (!tb[NOTIFY_COMMAND])
+ goto error;
+
+ if (!fill_string_list(tb[NOTIFY_COMMAND], argv, ARRAY_SIZE(argv)))
+ goto error;
+
+ if (!fill_string_list(tb[NOTIFY_ENV], env, ARRAY_SIZE(env)))
+ goto error;
+
+ netifd_start_process((const char **) argv, (char **) env, &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.uloop.pending) {
+ kill(state->proto_task.uloop.pid, signal);
+ state->teardown_wait_task = true;
+ }
+
+ return 0;
+}
+
+static int
+proto_shell_notify_error(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ struct blob_attr *cur;
+ char *data[16];
+ int n_data = 0;
+ int rem;
+
+ if (!tb[NOTIFY_ERROR])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ blobmsg_for_each_attr(cur, tb[NOTIFY_ERROR], rem) {
+ if (n_data + 1 == ARRAY_SIZE(data))
+ goto error;
+
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ goto error;
+
+ if (!blobmsg_check_attr(cur, NULL))
+ goto error;
+
+ data[n_data++] = blobmsg_data(cur);
+ }
+
+ if (!n_data)
+ goto error;
+
+ interface_add_error(state->proto.iface, state->handler->proto.name,
+ data[0], (const char **) &data[1], n_data - 1);
+
+ return 0;
+
+error:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+}
+
+static int
+proto_shell_block_restart(struct proto_shell_state *state, struct blob_attr **tb)
+{
+ state->proto.iface->autostart = false;
+ 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);
+ case 3:
+ return proto_shell_notify_error(state, tb);
+ case 4:
+ return proto_shell_block_restart(state, tb);
+ default:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+ }
+}
+
+static struct interface_proto_state *
+proto_shell_attach(const struct proto_handler *h, struct interface *iface,
+ struct blob_attr *attr)
+{
+ struct proto_shell_state *state;
+
+ state = calloc(1, sizeof(*state));
+ state->config = malloc(blob_pad_len(attr));
+ if (!state->config)
+ goto error;
+
+ memcpy(state->config, attr, blob_pad_len(attr));
+ 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->proto_task.cb = proto_shell_task_cb;
+ state->proto_task.dir_fd = proto_fd.fd;
+ state->proto_task.log_prefix = iface->name;
+ state->handler = container_of(h, struct proto_shell_handler, proto);
+
+ return &state->proto;
+
+error:
+ free(state);
+ 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, json_object *obj)
+{
+ struct blobmsg_policy *attrs;
+ char *str_buf, *str_cur;
+ int str_len = 0;
+ int i;
+
+ config->n_params = json_object_array_length(obj);
+ attrs = calloc(1, sizeof(*attrs) * config->n_params);
+ if (!attrs)
+ return NULL;
+
+ config->params = attrs;
+ for (i = 0; i < config->n_params; i++) {
+ json_object *cur, *name, *type;
+
+ cur = check_type(json_object_array_get_idx(obj, i), json_type_array);
+ if (!cur)
+ goto error;
+
+ name = check_type(json_object_array_get_idx(cur, 0), json_type_string);
+ if (!name)
+ goto error;
+
+ 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);
+ attrs[i].type = json_object_get_int(type);
+ if (attrs[i].type > BLOBMSG_TYPE_LAST)
+ goto error;
+
+ str_len += strlen(attrs[i].name) + 1;
+ }
+
+ str_buf = malloc(str_len);
+ if (!str_buf)
+ goto error;
+
+ str_cur = str_buf;
+ for (i = 0; i < config->n_params; i++) {
+ const char *name = attrs[i].name;
+
+ attrs[i].name = str_cur;
+ str_cur += sprintf(str_cur, "%s", name) + 1;
+ }
+
+ return str_buf;
+
+error:
+ free(attrs);
+ config->n_params = 0;
+ return NULL;
+}
+
+static void
+proto_shell_add_handler(const char *script, json_object *obj)
+{
+ struct proto_shell_handler *handler;
+ struct proto_handler *proto;
+ json_object *config, *tmp;
+ const char *name;
+ char *str;
+
+ if (!check_type(obj, json_type_object))
+ return;
+
+ tmp = get_field(obj, "name", json_type_string);
+ if (!tmp)
+ return;
+
+ name = json_object_get_string(tmp);
+
+ handler = calloc(1, sizeof(*handler) +
+ strlen(script) + 1 +
+ strlen(name) + 1);
+ if (!handler)
+ return;
+
+ strcpy(handler->script_name, script);
+
+ str = handler->script_name + strlen(handler->script_name) + 1;
+ strcpy(str, name);
+
+ proto = &handler->proto;
+ proto->name = str;
+ proto->config_params = &handler->config;
+ proto->attach = proto_shell_attach;
+
+ 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);
+ add_proto_handler(proto);
}
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;
+ char *start, *cmd;
FILE *f;
- int buflen, len;
+ int len;
+
+#define DUMP_SUFFIX " '' dump"
cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
sprintf(cmd, "%s" DUMP_SUFFIX, name);
return;
do {
- buflen = fread(buf, 1, sizeof(buf) - 1, f);
- if (buflen <= 0)
+ start = fgets(buf, sizeof(buf), f);
+ if (!start)
continue;
- start = buf;
- len = buflen;
- do {
- end = memchr(start, '\n', len);
- if (end)
- len = end - start;
-
- if (!tok)
- tok = json_tokener_new();
-
- obj = json_tokener_parse_ex(tok, start, len);
- if (!is_error(obj)) {
- proto_shell_add_handler(name, obj);
- json_object_put(obj);
- json_tokener_free(tok);
- tok = NULL;
- }
-
- if (end) {
- start = end + 1;
- len = buflen - (start - buf);
- }
- } while (len > 0);
+ len = strlen(start);
+
+ if (!tok)
+ tok = json_tokener_new();
+
+ obj = json_tokener_parse_ex(tok, start, len);
+ if (!is_error(obj)) {
+ proto_shell_add_handler(name, obj);
+ json_object_put(obj);
+ json_tokener_free(tok);
+ tok = NULL;
+ } else if (start[len - 1] == '\n') {
+ json_tokener_free(tok);
+ tok = NULL;
+ }
} while (!feof(f) && !ferror(f));
if (tok)
pclose(f);
}
-void __init proto_shell_init(void)
+static void __init proto_shell_init(void)
{
glob_t g;
+ int main_fd;
int i;
main_fd = open(".", O_RDONLY | O_DIRECTORY);
if (chdir("./proto"))
goto close_cur;
- proto_fd = open(".", O_RDONLY | O_DIRECTORY);
- if (proto_fd < 0)
+ proto_fd.fd = open(".", O_RDONLY | O_DIRECTORY);
+ if (proto_fd.fd < 0)
goto close_cur;
+ netifd_fd_add(&proto_fd);
glob("./*.sh", 0, NULL, &g);
for (i = 0; i < g.gl_pathc; i++)
proto_shell_add_script(g.gl_pathv[i]);
- if (list_empty(&handlers))
- close(proto_fd);
-
close_cur:
fchdir(main_fd);
- if (list_empty(&handlers))
- close(main_fd);
+ close(main_fd);
}
projects / project / netifd.git / blobdiff