+++ /dev/null
-#include <sys/stat.h>
-
-#include <libgen.h>
-#include <regex.h>
-
-#include <json/json.h>
-#include <libubox/avl-cmp.h>
-#include <libubox/blobmsg_json.h>
-
-#include "hotplug.h"
-
-static struct blob_buf b;
-
-static int rule_process_expr(struct blob_attr *cur, struct blob_attr *msg);
-static int rule_process_cmd(struct blob_attr *cur, struct blob_attr *msg);
-
-static char *__msg_find_var(struct blob_attr *msg, const char *name)
-{
- struct blob_attr *cur;
- int rem;
-
- blob_for_each_attr(cur, msg, rem) {
- if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
- continue;
-
- if (strcmp(blobmsg_name(cur), name) != 0)
- continue;
-
- return blobmsg_data(cur);
- }
-
- return NULL;
-}
-
-static char *msg_find_var(struct blob_attr *msg, const char *name)
-{
- char *str;
-
- if (!strcmp(name, "DEVICENAME") || !strcmp(name, "DEVNAME")) {
- str = __msg_find_var(msg, "DEVPATH");
- if (!str)
- return NULL;
-
- return basename(str);
- }
-
- return __msg_find_var(msg, name);
-}
-
-static void
-rule_get_tuple(struct blob_attr *cur, struct blob_attr **tb, int t1, int t2)
-{
- static struct blobmsg_policy expr_tuple[3] = {
- { .type = BLOBMSG_TYPE_STRING },
- {},
- {},
- };
-
- expr_tuple[1].type = t1;
- expr_tuple[2].type = t2;
- blobmsg_parse_array(expr_tuple, 3, tb, blobmsg_data(cur), blobmsg_data_len(cur));
-}
-
-static int handle_if(struct blob_attr *expr, struct blob_attr *msg)
-{
- struct blob_attr *tb[4];
- int ret;
-
- static const struct blobmsg_policy if_tuple[4] = {
- { .type = BLOBMSG_TYPE_STRING },
- { .type = BLOBMSG_TYPE_ARRAY },
- { .type = BLOBMSG_TYPE_ARRAY },
- { .type = BLOBMSG_TYPE_ARRAY },
- };
-
- blobmsg_parse_array(if_tuple, 4, tb, blobmsg_data(expr), blobmsg_data_len(expr));
-
- if (!tb[1] || !tb[2])
- return 0;
-
- ret = rule_process_expr(tb[1], msg);
- if (ret < 0)
- return 0;
-
- if (ret)
- return rule_process_cmd(tb[2], msg);
-
- if (!tb[3])
- return 0;
-
- return rule_process_cmd(tb[3], msg);
-}
-
-static int handle_case(struct blob_attr *expr, struct blob_attr *msg)
-{
- struct blob_attr *tb[3], *cur;
- const char *var;
- int rem;
-
- rule_get_tuple(expr, tb, BLOBMSG_TYPE_STRING, BLOBMSG_TYPE_TABLE);
- if (!tb[1] || !tb[2])
- return 0;
-
- var = msg_find_var(msg, blobmsg_data(tb[1]));
- if (!var)
- return 0;
-
- blobmsg_for_each_attr(cur, tb[2], rem) {
- if (!strcmp(var, blobmsg_name(cur)))
- return rule_process_cmd(cur, msg);
- }
-
- return 0;
-}
-
-static int handle_return(struct blob_attr *expr, struct blob_attr *msg)
-{
- return -2;
-}
-
-static int handle_include(struct blob_attr *expr, struct blob_attr *msg)
-{
- struct blob_attr *tb[3];
- struct rule_file *r;
-
- rule_get_tuple(expr, tb, BLOBMSG_TYPE_STRING, 0);
- if (!tb[1])
- return 0;
-
- r = rule_file_get(blobmsg_data(tb[1]));
- if (!r)
- return 0;
-
- return rule_process_cmd(r->data, msg);
-}
-
-static const struct rule_handler cmd[] = {
- { "if", handle_if },
- { "case", handle_case },
- { "return", handle_return },
- { "include", handle_include },
-};
-
-static int eq_regex_cmp(const char *str, const char *pattern, bool regex)
-{
- regex_t reg;
- int ret;
-
- if (!regex)
- return !strcmp(str, pattern);
-
- if (regcomp(®, pattern, REG_EXTENDED | REG_NOSUB))
- return 0;
-
- ret = !regexec(®, str, 0, NULL, 0);
- regfree(®);
-
- return ret;
-}
-
-static int expr_eq_regex(struct blob_attr *expr, struct blob_attr *msg, bool regex)
-{
- struct blob_attr *tb[3], *cur;
- const char *var;
- int rem;
-
- rule_get_tuple(expr, tb, BLOBMSG_TYPE_STRING, 0);
- if (!tb[1] || !tb[2])
- return -1;
-
- var = msg_find_var(msg, blobmsg_data(tb[1]));
- if (!var)
- return 0;
-
- switch(blobmsg_type(tb[2])) {
- case BLOBMSG_TYPE_STRING:
- return eq_regex_cmp(var, blobmsg_data(tb[2]), regex);
- case BLOBMSG_TYPE_ARRAY:
- blobmsg_for_each_attr(cur, tb[2], rem) {
- if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
- rule_error(cur, "Unexpected element type");
- return -1;
- }
-
- if (eq_regex_cmp(var, blobmsg_data(cur), regex))
- return 1;
- }
- return 0;
- default:
- rule_error(tb[2], "Unexpected element type");
- return -1;
- }
-}
-
-static int handle_expr_eq(struct blob_attr *expr, struct blob_attr *msg)
-{
- return expr_eq_regex(expr, msg, false);
-}
-
-static int handle_expr_regex(struct blob_attr *expr, struct blob_attr *msg)
-{
- return expr_eq_regex(expr, msg, true);
-}
-
-static int handle_expr_has(struct blob_attr *expr, struct blob_attr *msg)
-{
- struct blob_attr *tb[3], *cur;
- int rem;
-
- rule_get_tuple(expr, tb, 0, 0);
- if (!tb[1])
- return -1;
-
- switch(blobmsg_type(tb[1])) {
- case BLOBMSG_TYPE_STRING:
- return !!msg_find_var(msg, blobmsg_data(tb[1]));
- case BLOBMSG_TYPE_ARRAY:
- blobmsg_for_each_attr(cur, tb[1], rem) {
- if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
- rule_error(cur, "Unexpected element type");
- return -1;
- }
-
- if (msg_find_var(msg, blobmsg_data(cur)))
- return 1;
- }
- return 0;
- default:
- rule_error(tb[1], "Unexpected element type");
- return -1;
- }
-}
-
-static int expr_and_or(struct blob_attr *expr, struct blob_attr *msg, bool and)
-{
- struct blob_attr *cur;
- int ret, rem;
- int i = 0;
-
- blobmsg_for_each_attr(cur, expr, rem) {
- if (i++ < 1)
- continue;
-
- ret = rule_process_expr(cur, msg);
- if (ret < 0)
- return ret;
-
- if (ret != and)
- return ret;
- }
-
- return and;
-}
-
-static int handle_expr_and(struct blob_attr *expr, struct blob_attr *msg)
-{
- return expr_and_or(expr, msg, 1);
-}
-
-static int handle_expr_or(struct blob_attr *expr, struct blob_attr *msg)
-{
- return expr_and_or(expr, msg, 0);
-}
-
-static int handle_expr_not(struct blob_attr *expr, struct blob_attr *msg)
-{
- struct blob_attr *tb[3];
-
- rule_get_tuple(expr, tb, BLOBMSG_TYPE_ARRAY, 0);
- if (!tb[1])
- return -1;
-
- return rule_process_expr(tb[1], msg);
-}
-
-static const struct rule_handler expr[] = {
- { "eq", handle_expr_eq },
- { "regex", handle_expr_regex },
- { "has", handle_expr_has },
- { "and", handle_expr_and },
- { "or", handle_expr_or },
- { "not", handle_expr_not },
-};
-
-static int
-__rule_process_type(struct blob_attr *cur, struct blob_attr *msg,
- const struct rule_handler *h, int n, bool *found)
-{
- const char *name = blobmsg_data(blobmsg_data(cur));
- int i;
-
- for (i = 0; i < n; i++) {
- if (strcmp(name, h[i].name) != 0)
- continue;
-
- *found = true;
- return h[i].handler(cur, msg);
- }
-
- *found = false;
- return -1;
-}
-
-static int rule_process_expr(struct blob_attr *cur, struct blob_attr *msg)
-{
- bool found;
- int ret;
-
- if (blobmsg_type(cur) != BLOBMSG_TYPE_ARRAY ||
- blobmsg_type(blobmsg_data(cur)) != BLOBMSG_TYPE_STRING) {
- rule_error(cur, "Unexpected element type");
- return -1;
- }
-
- ret = __rule_process_type(cur, msg, expr, ARRAY_SIZE(expr), &found);
- if (!found)
- rule_error(cur, "Unknown expression type");
-
- return ret;
-}
-
-static void cmd_add_string(const char *pattern, struct blob_attr *msg)
-{
- char *dest, *next, *str;
- int len = 0;
- bool var = false;
-
- dest = blobmsg_alloc_string_buffer(&b, NULL, 1);
- str = alloca(strlen(pattern) + 1);
- strcpy(str, pattern);
- next = str;
-
- while (*str) {
- const char *cur;
- int cur_len = 0;
-
- next = strchr(str, '%');
- if (!next)
- next = str + strlen(str);
-
- if (var) {
- if (next > str) {
- *next = 0;
- cur = msg_find_var(msg, str);
- if (cur)
- cur_len = strlen(cur);
- } else {
- cur = str - 1;
- cur_len = 1;
- }
- } else {
- cur = str;
- cur_len = next - str;
- }
-
- if (cur_len) {
- dest = blobmsg_realloc_string_buffer(&b, cur_len + 1);
- memcpy(dest + len, cur, cur_len);
- len += cur_len;
- }
-
- var = !var;
- str = next + 1;
- }
-
- dest[len] = 0;
- blobmsg_add_string_buffer(&b);
-}
-
-static int cmd_process_strings(struct blob_attr *attr, struct blob_attr *msg)
-{
- struct blob_attr *cur;
- int args = -1;
- int rem;
- void *c;
-
- blob_buf_init(&b, 0);
- c = blobmsg_open_array(&b, NULL);
- blobmsg_for_each_attr(cur, attr, rem) {
- if (args++ < 0)
- continue;
-
- if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING) {
- rule_error(attr, "Invalid argument in command");
- return -1;
- }
-
- cmd_add_string(blobmsg_data(cur), msg);
- }
-
- blobmsg_close_array(&b, c);
-
- return 0;
-}
-
-static int __rule_process_cmd(struct blob_attr *cur, struct blob_attr *msg)
-{
- const char *name;
- bool found;
- int ret;
-
- if (blobmsg_type(cur) != BLOBMSG_TYPE_ARRAY ||
- blobmsg_type(blobmsg_data(cur)) != BLOBMSG_TYPE_STRING) {
- rule_error(cur, "Unexpected element type");
- return -1;
- }
-
- ret = __rule_process_type(cur, msg, cmd, ARRAY_SIZE(cmd), &found);
- if (found)
- return ret;
-
- name = blobmsg_data(blobmsg_data(cur));
- ret = cmd_process_strings(cur, msg);
- if (ret)
- return ret;
-
- rule_handle_command(name, blob_data(b.head));
-
- return 0;
-}
-
-static int rule_process_cmd(struct blob_attr *block, struct blob_attr *msg)
-{
- struct blob_attr *cur;
- int rem;
- int ret;
- int i = 0;
-
- if (blobmsg_type(block) != BLOBMSG_TYPE_ARRAY) {
- rule_error(block, "Unexpected element type");
- return -1;
- }
-
- blobmsg_for_each_attr(cur, block, rem) {
- switch(blobmsg_type(cur)) {
- case BLOBMSG_TYPE_STRING:
- if (!i)
- return __rule_process_cmd(block, msg);
- default:
- ret = rule_process_cmd(cur, msg);
- if (ret < -1)
- return ret;
- break;
- }
- i++;
- }
-
- return 0;
-}
-
-void rule_process_msg(struct rule_file *f, struct blob_attr *msg)
-{
- rule_process_cmd(f->data, msg);
-}
-
-static struct rule_file *
-rule_file_load(const char *filename)
-{
- struct rule_file *r;
- struct stat st;
-
- json_object *obj = NULL;
-
- blob_buf_init(&b, 0);
-
- if (stat(filename, &st))
- return NULL;
-
- obj = json_object_from_file((char *) filename);
- if (is_error(obj))
- return NULL;
-
- if (!json_object_is_type(obj, json_type_array)) {
- json_object_put(obj);
- return NULL;
- }
-
- blobmsg_add_json_element(&b, filename, obj);
- json_object_put(obj);
-
- r = calloc(1, sizeof(*r) + blob_len(b.head));
- memcpy(r->data, blob_data(b.head), blob_len(b.head));
- r->avl.key = blobmsg_name(r->data);
-
- return r;
-}
-
-static struct avl_tree rule_files;
-
-struct rule_file *
-rule_file_get(const char *filename)
-{
- struct rule_file *r;
-
- if (!rule_files.comp)
- avl_init(&rule_files, avl_strcmp, false, NULL);
-
- r = avl_find_element(&rule_files, filename, r, avl);
- if (r)
- return r;
-
- r = rule_file_load(filename);
- if (!r)
- return NULL;
-
- avl_insert(&rule_files, &r->avl);
- return r;
-}
-
-void
-rule_file_free_all(void)
-{
- struct rule_file *r, *next;
-
- avl_remove_all_elements(&rule_files, r, avl, next)
- free(r);
-
- blob_buf_free(&b);
-}
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <linux/types.h>
+#include <linux/netlink.h>
+
+#include <libubox/blobmsg_json.h>
+#include <libubox/json_script.h>
+#include <libubox/uloop.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <libgen.h>
+
+#include "procd.h"
#include "hotplug.h"
-void rule_handle_command(const char *name, struct blob_attr *data)
+#define HOTPLUG_WAIT 500
+
+struct cmd_queue {
+ struct list_head list;
+
+ struct blob_attr *msg;
+ struct blob_attr *data;
+ void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+};
+
+static LIST_HEAD(cmd_queue);
+static struct uloop_process queue_proc;
+static struct uloop_timeout last_event;
+static struct blob_buf b;
+static char *rule_file;
+static struct blob_buf script;
+
+static char *hotplug_msg_find_var(struct blob_attr *msg, const char *name)
+{
+ struct blob_attr *cur;
+ int rem;
+
+ blobmsg_for_each_attr(cur, msg, rem) {
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ continue;
+
+ if (strcmp(blobmsg_name(cur), name) != 0)
+ continue;
+
+ return blobmsg_data(cur);
+ }
+
+ return NULL;
+}
+
+static void handle_makedev(struct blob_attr *msg, struct blob_attr *data)
{
+ static struct blobmsg_policy mkdev_policy[2] = {
+ { .type = BLOBMSG_TYPE_STRING },
+ { .type = BLOBMSG_TYPE_STRING },
+ };
+ struct blob_attr *tb[2];
+ char *minor = hotplug_msg_find_var(msg, "MINOR");
+ char *major = hotplug_msg_find_var(msg, "MAJOR");
+ char *subsystem = hotplug_msg_find_var(msg, "SUBSYSTEM");
+
+ blobmsg_parse_array(mkdev_policy, 2, tb, blobmsg_data(data), blobmsg_data_len(data));
+ if (tb[0] && tb[1] && minor && major && subsystem) {
+ mode_t m = S_IFCHR;
+ if (!strcmp(subsystem, "block"))
+ m = S_IFBLK;
+ mknod(blobmsg_get_string(tb[0]),
+ m | strtoul(blobmsg_data(tb[1]), NULL, 8),
+ makedev(atoi(major), atoi(minor)));
+ }
}
-void rule_error(struct blob_attr *cur, const char *msg)
+static void handle_rm(struct blob_attr *msg, struct blob_attr *data)
{
+ static struct blobmsg_policy rm_policy = {
+ .type = BLOBMSG_TYPE_STRING,
+ };
+ struct blob_attr *tb;
+
+ blobmsg_parse_array(&rm_policy, 1, &tb, blobmsg_data(data), blobmsg_data_len(data));
+ if (tb)
+ unlink(blobmsg_data(tb));
+}
+
+static void handle_exec(struct blob_attr *msg, struct blob_attr *data)
+{
+ char *argv[8];
+ struct blob_attr *cur;
+ int rem;
+ int i = 0;
+
+ blobmsg_for_each_attr(cur, msg, rem)
+ setenv(blobmsg_name(cur), blobmsg_data(cur), 1);
+
+ blobmsg_for_each_attr(cur, data, rem) {
+ argv[i] = blobmsg_data(cur);
+ i++;
+ if (i == 7)
+ break;
+ }
+
+ if (debug < 2) {
+ close(STDIN_FILENO);
+ close(STDOUT_FILENO);
+ close(STDERR_FILENO);
+ }
+
+ if (i > 0) {
+ argv[i] = NULL;
+ execvp(argv[0], &argv[0]);
+ }
+ exit(-1);
+}
+
+static void handle_firmware(struct blob_attr *msg, struct blob_attr *data)
+{
+ char *dir = blobmsg_get_string(blobmsg_data(data));
+ char *file = hotplug_msg_find_var(msg, "FIRMWARE");
+ char *dev = hotplug_msg_find_var(msg, "DEVPATH");
+ void *fw_data;
+ struct stat s;
+ char *path, loadpath[256], syspath[256];
+ int fw, load, sys, len;
+
+ DEBUG(1, "Firmware request for %s/%s\n", dir, file);
+
+ if (!file || !dir || !dev) {
+ ERROR("Request for unknown firmware %s/%s\n", dir, file);
+ exit(-1);
+ }
+
+ path = malloc(strlen(dir) + strlen(file) + 2);
+ if (!path) {
+ ERROR("Failed to allocate memory\n");
+ exit(-1);
+ }
+ sprintf(path, "%s/%s", dir, file);
+
+ if (stat(path, &s)) {
+ ERROR("Could not find firmware %s\n", path);
+ exit(-1);
+ }
+
+ fw_data = malloc(s.st_size);
+ if (!fw_data) {
+ ERROR("Failed to allocate firmware data memory\n");
+ exit(-1);
+ }
+
+ fw = open(path, O_RDONLY);
+ if (!fw) {
+ ERROR("Failed to open %s\n", path);
+ exit(-1);
+ }
+ if (read(fw, fw_data, s.st_size) != s.st_size) {
+ ERROR("Failed to read firmware data\n");
+ exit(-1);
+ }
+ close(fw);
+
+ snprintf(loadpath, sizeof(loadpath), "/sys/%s/loading", dev);
+ load = open(loadpath, O_WRONLY);
+ if (!load) {
+ ERROR("Failed to open %s\n", loadpath);
+ exit(-1);
+ }
+ write(load, "1", 1);
+ close(load);
+
+ snprintf(syspath, sizeof(syspath), "/sys/%s/data", dev);
+ sys = open(syspath, O_WRONLY);
+ if (!sys) {
+ ERROR("Failed to open %s\n", syspath);
+ exit(-1);
+ }
+
+ len = s.st_size;
+ while (len > 4096) {
+ write(fw, fw_data, 4096);
+ len -= 4096;
+ }
+ if (len)
+ write(fw, fw_data, len);
+ close(fw);
+
+ load = open(loadpath, O_WRONLY);
+ write(load, "0", 1);
+ close(load);
+
+ DEBUG(1, "Done loading %s\n", path);
+
+ exit(-1);
+}
+
+static struct cmd_handler {
+ char *name;
+ int atomic;
+ void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+} handlers[] = {
+ {
+ .name = "makedev",
+ .atomic = 1,
+ .handler = handle_makedev,
+ }, {
+ .name = "rm",
+ .atomic = 1,
+ .handler = handle_rm,
+ }, {
+ .name = "exec",
+ .handler = handle_exec,
+ }, {
+ .name = "load-firmware",
+ .handler = handle_firmware,
+ },
+};
+
+static void queue_next(void)
+{
+ struct cmd_queue *c;
+
+ if (queue_proc.pending || list_empty(&cmd_queue))
+ return;
+
+ c = list_first_entry(&cmd_queue, struct cmd_queue, list);
+
+ queue_proc.pid = fork();
+ if (!queue_proc.pid) {
+ c->handler(c->msg, c->data);
+ exit(0);
+ }
+
+ list_del(&c->list);
+ free(c);
+
+ if (queue_proc.pid <= 0) {
+ queue_next();
+ return;
+ }
+
+ uloop_process_add(&queue_proc);
+
+ DEBUG(2, "Launched hotplug exec instance, pid=%d\n", (int) queue_proc.pid);
}
+static void queue_proc_cb(struct uloop_process *c, int ret)
+{
+ DEBUG(2, "Finished hotplug exec instance, pid=%d\n", (int) c->pid);
+
+ queue_next();
+}
+
+static void queue_add(struct cmd_handler *h, struct blob_attr *msg, struct blob_attr *data)
+{
+ struct cmd_queue *c = NULL;
+ struct blob_attr *_msg, *_data;
+
+ c = calloc_a(sizeof(struct cmd_queue),
+ &_msg, blob_pad_len(msg),
+ &_data, blob_pad_len(data),
+ NULL);
+
+ c->msg = _msg;
+ c->data = _data;
+
+ if (!c)
+ return;
+
+ memcpy(c->msg, msg, blob_pad_len(msg));
+ memcpy(c->data, data, blob_pad_len(data));
+ c->handler = h->handler;
+ list_add_tail(&c->list, &cmd_queue);
+ queue_next();
+}
+
+static const char* rule_handle_var(struct json_script_ctx *ctx, const char *name, struct blob_attr *vars)
+{
+ const char *str, *sep;
+
+ if (!strcmp(name, "DEVICENAME") || !strcmp(name, "DEVNAME")) {
+ str = json_script_find_var(ctx, vars, "DEVPATH");
+ if (!str)
+ return NULL;
+
+ sep = strrchr(str, '/');
+ if (sep)
+ return sep + 1;
+
+ return str;
+ }
+
+ return NULL;
+}
+
+static struct json_script_file *
+rule_handle_file(struct json_script_ctx *ctx, const char *name)
+{
+ json_object *obj;
+
+ obj = json_object_from_file((char*)name);
+ if (is_error(obj))
+ return NULL;
+
+ blob_buf_init(&script, 0);
+ blobmsg_add_json_element(&script, "", obj);
+
+ return json_script_file_from_blobmsg(name, blob_data(script.head), blob_len(script.head));
+}
+
+static void rule_handle_command(struct json_script_ctx *ctx, const char *name,
+ struct blob_attr *data, struct blob_attr *vars)
+{
+ struct blob_attr *cur;
+ int rem, i;
+
+ if (debug > 1) {
+ DEBUG(2, "Command: %s", name);
+ blobmsg_for_each_attr(cur, data, rem)
+ DEBUG(2, " %s", (char *) blobmsg_data(cur));
+ DEBUG(2, "\n");
+
+ DEBUG(2, "Message:");
+ blobmsg_for_each_attr(cur, vars, rem)
+ DEBUG(2, " %s=%s", blobmsg_name(cur), (char *) blobmsg_data(cur));
+ DEBUG(2, "\n");
+ }
+
+ for (i = 0; i < ARRAY_SIZE(handlers); i++)
+ if (!strcmp(handlers[i].name, name)) {
+ if (handlers[i].atomic)
+ handlers[i].handler(vars, data);
+ else
+ queue_add(&handlers[i], vars, data);
+ break;
+ }
+
+ if (last_event.cb)
+ uloop_timeout_set(&last_event, HOTPLUG_WAIT);
+}
+
+static void rule_handle_error(struct json_script_ctx *ctx, const char *msg,
+ struct blob_attr *context)
+{
+ char *s;
+
+ s = blobmsg_format_json(context, false);
+ ERROR("ERROR: %s in block: %s\n", msg, s);
+ free(s);
+}
+
+static struct json_script_ctx jctx = {
+ .handle_var = rule_handle_var,
+ .handle_error = rule_handle_error,
+ .handle_command = rule_handle_command,
+ .handle_file = rule_handle_file,
+};
+
+static void hotplug_handler(struct uloop_fd *u, unsigned int ev)
+{
+ int i = 0;
+ static char buf[4096];
+ int len = recv(u->fd, buf, sizeof(buf), MSG_DONTWAIT);
+ void *index;
+ if (len < 1)
+ return;
+
+ blob_buf_init(&b, 0);
+ index = blobmsg_open_table(&b, NULL);
+ while (i < len) {
+ int l = strlen(buf + i) + 1;
+ char *e = strstr(&buf[i], "=");
+
+ if (e) {
+ *e = '\0';
+ blobmsg_add_string(&b, &buf[i], &e[1]);
+ }
+ i += l;
+ }
+ blobmsg_close_table(&b, index);
+ DEBUG(3, "%s\n", blobmsg_format_json(b.head, true));
+ json_script_run(&jctx, rule_file, blob_data(b.head));
+}
+
+static struct uloop_fd hotplug_fd = {
+ .cb = hotplug_handler,
+};
+
+void hotplug_last_event(uloop_timeout_handler handler)
+{
+ last_event.cb = handler;
+ if (handler)
+ uloop_timeout_set(&last_event, HOTPLUG_WAIT);
+ else
+ uloop_timeout_cancel(&last_event);
+}
+
+void hotplug(char *rules)
+{
+ struct sockaddr_nl nls;
+
+ rule_file = strdup(rules);
+ memset(&nls,0,sizeof(struct sockaddr_nl));
+ nls.nl_family = AF_NETLINK;
+ nls.nl_pid = getpid();
+ nls.nl_groups = -1;
+
+ if ((hotplug_fd.fd = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_KOBJECT_UEVENT)) == -1) {
+ ERROR("Failed to open hotplug socket\n");
+ perror("socket");
+ exit(1);
+ }
+ if (bind(hotplug_fd.fd, (void *)&nls, sizeof(struct sockaddr_nl))) {
+ ERROR("Failed to bind hotplug socket\n");
+ perror("socket");
+ exit(1);
+ }
+
+ json_script_init(&jctx);
+ queue_proc.cb = queue_proc_cb;
+ uloop_fd_add(&hotplug_fd, ULOOP_READ);
+}
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
#ifndef __PROCD_HOTPLUG_H
#define __PROCD_HOTPLUG_H
-#include <libubox/avl.h>
-#include <libubox/blob.h>
-#include <libubox/blobmsg.h>
-#include <libubox/utils.h>
-
-struct rule_file {
- struct avl_node avl;
- struct blob_attr data[];
-};
-
-struct rule_handler {
- const char *name;
- int (*handler)(struct blob_attr *cur, struct blob_attr *msg);
-};
+#include <libubox/uloop.h>
-struct rule_file *rule_file_get(const char *filename);
-void rule_file_free_all(void);
-void rule_error(struct blob_attr *cur, const char *msg);
-void rule_process_msg(struct rule_file *f, struct blob_attr *msg);
-void rule_handle_command(const char *name, struct blob_attr *data);
+void hotplug(char *rules);
+void hotplug_last_event(uloop_timeout_handler handler);
#endif
projects / oweals / procd.git / commitdiff