#include <glob.h>
#include <unistd.h>
#include <fcntl.h>
+#include <signal.h>
#include <libubox/blobmsg_json.h>
#include "proto.h"
static LIST_HEAD(handlers);
-static int proto_fd, main_fd;
+static int 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[];
};
-#define DUMP_PREFIX "./"
-#define DUMP_SUFFIX " dump"
+struct proto_shell_state {
+ struct interface_proto_state proto;
+ struct proto_shell_handler *handler;
+ struct blob_attr *config;
-static void proto_shell_add_handler(const char *script, struct json_object *obj)
+ struct uloop_process setup_task;
+ struct uloop_process teardown_task;
+ bool teardown_pending;
+};
+
+static int
+run_script(const char **argv, struct uloop_process *proc)
+{
+ int pid;
+
+ if ((pid = fork()) < 0)
+ return -1;
+
+ if (!pid) {
+ fchdir(proto_fd);
+ execvp(argv[0], (char **) argv);
+ exit(127);
+ }
+
+ if (pid < 0)
+ return -1;
+
+ proc->pid = pid;
+ uloop_process_add(proc);
+
+ return 0;
+}
+
+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 uloop_process *proc;
+ const char *argv[6];
+ const char *action;
+ char *config;
+ 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) {
+ kill(state->setup_task.pid, SIGINT);
+ state->teardown_pending = true;
+ return 0;
+ }
+ }
+
+ config = blobmsg_format_json(state->config, true);
+ if (!config)
+ return -1;
+
+ 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 = run_script(argv, proc);
+ free(config);
+
+ return ret;
+}
+
+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);
+ if (state->teardown_pending) {
+ state->teardown_pending = 0;
+ 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);
+ state->proto.proto_event(&state->proto, IFPEV_DOWN);
+}
+
+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);
+}
+
+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.cb = proto_shell_handler;
+ state->setup_task.cb = proto_shell_setup_cb;
+ state->teardown_task.cb = proto_shell_teardown_cb;
+ 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;
+
+ attrs = calloc(1, sizeof(*attrs));
+ if (!attrs)
+ return NULL;
+
+ config->n_params = json_object_array_length(obj);
+ 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)
{
- if (json_object_get_type(obj) != json_type_object)
+ 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;
- fprintf(stderr, "Add handler for script %s: %s\n", script, json_object_to_json_string(obj));
+ 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;
FILE *f;
int buflen, len;
- cmd = alloca(strlen(name) + 1 + sizeof(DUMP_PREFIX) + sizeof(DUMP_SUFFIX));
- sprintf(cmd, DUMP_PREFIX "%s" DUMP_SUFFIX, name);
+#define DUMP_SUFFIX " '' dump"
+
+ cmd = alloca(strlen(name) + 1 + sizeof(DUMP_SUFFIX));
+ sprintf(cmd, "%s" DUMP_SUFFIX, name);
f = popen(cmd, "r");
if (!f)
void __init proto_shell_init(void)
{
glob_t g;
+ int main_fd;
int i;
main_fd = open(".", O_RDONLY | O_DIRECTORY);
if (proto_fd < 0)
goto close_cur;
- glob("*.sh", 0, NULL, &g);
+ 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