Reboot busybox style via procd

[project/procd.git] / system.c

diff --git a/system.c b/system.c
index 3d52039..4b3b82c 100644 (file)
--- a/system.c
+++ b/system.c
@@ -38,7 +38,7 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
 {
        void *c;
        char line[256];
-       char *key, *val;
+       char *key, *val, *next;
        struct utsname utsname;
        FILE *f;
 
@@ -111,24 +111,53 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
 
                while (fgets(line, sizeof(line), f))
                {
-                       key = strtok(line, "=\"");
-                       val = strtok(NULL, "\"\n");
+                       char *dest;
+                       char ch;
 
-                       if (!key || !val)
+                       key = line;
+                       val = strchr(line, '=');
+                       if (!val)
                                continue;
 
+                       *(val++) = 0;
+
                        if (!strcasecmp(key, "DISTRIB_ID"))
-                               blobmsg_add_string(&b, "distribution", val);
+                               key = "distribution";
                        else if (!strcasecmp(key, "DISTRIB_RELEASE"))
-                               blobmsg_add_string(&b, "version", val);
+                               key = "version";
                        else if (!strcasecmp(key, "DISTRIB_REVISION"))
-                               blobmsg_add_string(&b, "revision", val);
+                               key = "revision";
                        else if (!strcasecmp(key, "DISTRIB_CODENAME"))
-                               blobmsg_add_string(&b, "codename", val);
+                               key = "codename";
                        else if (!strcasecmp(key, "DISTRIB_TARGET"))
-                               blobmsg_add_string(&b, "target", val);
+                               key = "target";
                        else if (!strcasecmp(key, "DISTRIB_DESCRIPTION"))
-                               blobmsg_add_string(&b, "description", val);
+                               key = "description";
+                       else
+                               continue;
+
+                       dest = blobmsg_alloc_string_buffer(&b, key, strlen(val));
+                       while (val && (ch = *(val++)) != 0) {
+                               switch (ch) {
+                               case '\'':
+                               case '"':
+                                       next = strchr(val, ch);
+                                       if (next)
+                                               *next = 0;
+
+                                       strcpy(dest, val);
+
+                                       if (next)
+                                               val = next + 1;
+
+                                       dest += strlen(dest);
+                                       break;
+                               case '\\':
+                                       *(dest++) = *(val++);
+                                       break;
+                               }
+                       }
+                       blobmsg_add_string_buffer(&b);
                }
 
                blobmsg_close_array(&b, c);
@@ -263,7 +292,7 @@ enum {
        __SIGNAL_MAX
 };
 
-static const struct blobmsg_policy signal_policy[__WDT_MAX] = {
+static const struct blobmsg_policy signal_policy[__SIGNAL_MAX] = {
        [SIGNAL_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
        [SIGNAL_NUM] = { .name = "signum", .type = BLOBMSG_TYPE_INT32 },
 };
@@ -286,18 +315,65 @@ static int proc_signal(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+enum {
+       NAND_PATH,
+       __NAND_MAX
+};
+
+static const struct blobmsg_policy nand_policy[__NAND_MAX] = {
+       [NAND_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
+};
+
+static void
+procd_spawn_upgraded(char *path)
+{
+       char *wdt_fd = watchdog_fd();
+       char *argv[] = { "/tmp/upgraded", NULL, NULL};
+
+       argv[1] = path;
+
+       DEBUG(2, "Exec to upgraded now\n");
+       if (wdt_fd) {
+               watchdog_no_cloexec();
+               setenv("WDTFD", wdt_fd, 1);
+       }
+       execvp(argv[0], argv);
+}
+
+static int nand_set(struct ubus_context *ctx, struct ubus_object *obj,
+                       struct ubus_request_data *req, const char *method,
+                       struct blob_attr *msg)
+{
+       struct blob_attr *tb[__NAND_MAX];
+
+       if (!msg)
+               return UBUS_STATUS_INVALID_ARGUMENT;
+
+       blobmsg_parse(nand_policy, __NAND_MAX, tb, blob_data(msg), blob_len(msg));
+       if (!tb[NAND_PATH])
+               return UBUS_STATUS_INVALID_ARGUMENT;
+
+       procd_spawn_upgraded(blobmsg_get_string(tb[NAND_PATH]));
+       fprintf(stderr, "Yikees, something went wrong. no /sbin/upgraded ?\n");
+       return 0;
+}
+
 static void
 procd_subscribe_cb(struct ubus_context *ctx, struct ubus_object *obj)
 {
        notify = obj->has_subscribers;
 }
 
+
 static const struct ubus_method system_methods[] = {
        UBUS_METHOD_NOARG("board", system_board),
        UBUS_METHOD_NOARG("info",  system_info),
        UBUS_METHOD_NOARG("upgrade", system_upgrade),
        UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
        UBUS_METHOD("signal", proc_signal, signal_policy),
+
+       /* must remain at the end as it ia not always loaded */
+       UBUS_METHOD("nandupgrade", nand_set, nand_policy),
 };
 
 static struct ubus_object_type system_object_type =
@@ -326,8 +402,12 @@ procd_bcast_event(char *event, struct blob_attr *msg)
 
 void ubus_init_system(struct ubus_context *ctx)
 {
+       struct stat s;
        int ret;
 
+       if (stat("/sbin/upgraded", &s))
+               system_object.n_methods -= 1;
+
        _ctx = ctx;
        ret = ubus_add_object(ctx, &system_object);
        if (ret)