luci2: implement process_list call

diff --git a/luci2.c b/luci2.c
index 3a74546..4d66be1 100644 (file)
--- a/luci2.c
+++ b/luci2.c
@@ -180,6 +180,73 @@ rpc_luci2_system_dmesg(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+static int
+rpc_luci2_process_list(struct ubus_context *ctx, struct ubus_object *obj,
+                       struct ubus_request_data *req, const char *method,
+                       struct blob_attr *msg)
+{
+       FILE *top;
+       void *c, *d;
+       char line[1024];
+       char *pid, *ppid, *user, *stat, *vsz, *pvsz, *pcpu, *cmd;
+
+       if (!(top = popen("/bin/busybox top -bn1", "r")))
+               return rpc_errno_status();
+
+       blob_buf_init(&buf, 0);
+       c = blobmsg_open_array(&buf, "processes");
+
+       while (fgets(line, sizeof(line) - 1, top))
+       {
+               pid  = strtok(line, " ");
+
+               if (*pid < '0' || *pid > '9')
+                       continue;
+
+               ppid = strtok(NULL, " ");
+               user = strtok(NULL, " ");
+               stat = strtok(NULL, " ");
+
+               if (!stat)
+                       continue;
+
+               if (!*(stat + 1))
+                       *(stat + 1) = ' ';
+
+               if (!*(stat + 2))
+                       *(stat + 2) = ' ';
+
+               *(stat + 3) = 0;
+
+               vsz  = strtok(stat + 4, " ");
+               pvsz = strtok(NULL, " ");
+               pcpu = strtok(NULL, " ");
+               cmd  = strtok(NULL, "\n");
+
+               if (!cmd)
+                       continue;
+
+               d = blobmsg_open_table(&buf, NULL);
+
+               blobmsg_add_u32(&buf, "pid", atoi(pid));
+               blobmsg_add_u32(&buf, "ppid", atoi(ppid));
+               blobmsg_add_string(&buf, "user", user);
+               blobmsg_add_string(&buf, "stat", stat);
+               blobmsg_add_u32(&buf, "vsize", atoi(vsz) * 1024);
+               blobmsg_add_u32(&buf, "vsize_percent", atoi(pvsz));
+               blobmsg_add_u32(&buf, "cpu_percent", atoi(pcpu));
+               blobmsg_add_string(&buf, "command", cmd);
+
+               blobmsg_close_table(&buf, d);
+       }
+
+       fclose(top);
+       blobmsg_close_array(&buf, c);
+
+       ubus_send_reply(ctx, req, buf.head);
+       return 0;
+}
+
 
 static FILE *
 dnsmasq_leasefile(void)
@@ -704,8 +771,9 @@ int rpc_luci2_api_init(struct ubus_context *ctx)
        int rv = 0;
 
        static const struct ubus_method luci2_system_methods[] = {
-               UBUS_METHOD_NOARG("syslog", rpc_luci2_system_log),
-               UBUS_METHOD_NOARG("dmesg",  rpc_luci2_system_dmesg),
+               UBUS_METHOD_NOARG("syslog",       rpc_luci2_system_log),
+               UBUS_METHOD_NOARG("dmesg",        rpc_luci2_system_dmesg),
+               UBUS_METHOD_NOARG("process_list", rpc_luci2_process_list)
        };
 
        static struct ubus_object_type luci2_system_type =