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- /*
- Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
- All rights reserved.
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include <respondd.h>
- #include <json-c/json.h>
- #include <libgluonutil.h>
- #include <libplatforminfo.h>
- #include <uci.h>
- #include <stdio.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/vfs.h>
- static struct json_object * gluon_version(void) {
- char *version = gluonutil_read_line("/lib/gluon/gluon-version");
- if (!version)
- return NULL;
- char full_version[6 + strlen(version) + 1];
- snprintf(full_version, sizeof(full_version), "gluon-%s", version);
- free(version);
- return json_object_new_string(full_version);
- }
- static struct json_object * get_site_code(void) {
- struct json_object *site = gluonutil_load_site_config();
- if (!site)
- return NULL;
- struct json_object *ret = NULL;
- json_object_object_get_ex(site, "site_code", &ret);
- if (ret)
- json_object_get(ret);
- json_object_put(site);
- return ret;
- }
- static struct json_object * get_hostname(void) {
- struct json_object *ret = NULL;
- struct uci_context *ctx = uci_alloc_context();
- ctx->flags &= ~UCI_FLAG_STRICT;
- char section[] = "system.@system[0]";
- struct uci_ptr ptr;
- if (uci_lookup_ptr(ctx, &ptr, section, true))
- goto error;
- struct uci_section *s = ptr.s;
- const char *hostname = uci_lookup_option_string(ctx, s, "pretty_hostname");
- if (!hostname)
- hostname = uci_lookup_option_string(ctx, s, "hostname");
- ret = gluonutil_wrap_string(hostname);
- error:
- uci_free_context(ctx);
- return ret;
- }
- static struct json_object * respondd_provider_nodeinfo(void) {
- struct json_object *ret = json_object_new_object();
- json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
- json_object_object_add(ret, "hostname", get_hostname());
- struct json_object *hardware = json_object_new_object();
- const char *model = platforminfo_get_model();
- if (model)
- json_object_object_add(hardware, "model", json_object_new_string(model));
- json_object_object_add(hardware, "nproc", json_object_new_int(sysconf(_SC_NPROCESSORS_ONLN)));
- json_object_object_add(ret, "hardware", hardware);
- struct json_object *network = json_object_new_object();
- json_object_object_add(network, "mac", gluonutil_wrap_and_free_string(gluonutil_get_sysconfig("primary_mac")));
- json_object_object_add(ret, "network", network);
- struct json_object *software = json_object_new_object();
- struct json_object *software_firmware = json_object_new_object();
- json_object_object_add(software_firmware, "base", gluon_version());
- json_object_object_add(software_firmware, "release", gluonutil_wrap_and_free_string(gluonutil_read_line("/lib/gluon/release")));
- json_object_object_add(software, "firmware", software_firmware);
- json_object_object_add(ret, "software", software);
- struct json_object *system = json_object_new_object();
- json_object_object_add(system, "site_code", get_site_code());
- json_object_object_add(ret, "system", system);
- return ret;
- }
- static void add_uptime(struct json_object *obj) {
- FILE *f = fopen("/proc/uptime", "r");
- struct json_object* jso;
- if (!f)
- return;
- double uptime, idletime;
- if (fscanf(f, "%lf %lf", &uptime, &idletime) == 2) {
- jso = json_object_new_double(uptime);
- json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
- json_object_object_add(obj, "uptime", jso);
- jso = json_object_new_double(idletime);
- json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
- json_object_object_add(obj, "idletime", jso);
- }
- fclose(f);
- }
- static void add_loadavg(struct json_object *obj) {
- FILE *f = fopen("/proc/loadavg", "r");
- if (!f)
- return;
- double loadavg;
- unsigned proc_running, proc_total;
- if (fscanf(f, "%lf %*f %*f %u/%u", &loadavg, &proc_running, &proc_total) == 3) {
- struct json_object *jso = json_object_new_double(loadavg);
- json_object_set_serializer(jso, json_object_double_to_json_string, "%.2f", NULL);
- json_object_object_add(obj, "loadavg", jso);
- struct json_object *processes = json_object_new_object();
- json_object_object_add(processes, "running", json_object_new_int(proc_running));
- json_object_object_add(processes, "total", json_object_new_int(proc_total));
- json_object_object_add(obj, "processes", processes);
- }
- fclose(f);
- }
- static struct json_object * get_memory(void) {
- FILE *f = fopen("/proc/meminfo", "r");
- if (!f)
- return NULL;
- struct json_object *ret = json_object_new_object();
- char *line = NULL;
- size_t len = 0;
- while (getline(&line, &len, f) >= 0) {
- char label[32];
- unsigned value;
- if (sscanf(line, "%31[^:]: %u", label, &value) != 2)
- continue;
- if (!strcmp(label, "MemTotal"))
- json_object_object_add(ret, "total", json_object_new_int(value));
- else if (!strcmp(label, "MemFree"))
- json_object_object_add(ret, "free", json_object_new_int(value));
- else if (!strcmp(label, "Buffers"))
- json_object_object_add(ret, "buffers", json_object_new_int(value));
- else if (!strcmp(label, "Cached"))
- json_object_object_add(ret, "cached", json_object_new_int(value));
- }
- free(line);
- fclose(f);
- return ret;
- }
- static struct json_object * get_rootfs_usage(void) {
- struct statfs s;
- if (statfs("/", &s))
- return NULL;
- struct json_object *jso = json_object_new_double(1 - (double)s.f_bfree / s.f_blocks);
- json_object_set_serializer(jso, json_object_double_to_json_string, "%.4f", NULL);
- return jso;
- }
- static struct json_object * respondd_provider_statistics(void) {
- struct json_object *ret = json_object_new_object();
- json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
- json_object_object_add(ret, "rootfs_usage", get_rootfs_usage());
- json_object_object_add(ret, "memory", get_memory());
- add_uptime(ret);
- add_loadavg(ret);
- return ret;
- }
- static struct json_object * respondd_provider_neighbours(void) {
- struct json_object *ret = json_object_new_object();
- json_object_object_add(ret, "node_id", gluonutil_wrap_and_free_string(gluonutil_get_node_id()));
- return ret;
- }
- const struct respondd_provider_info respondd_providers[] = {
- {"nodeinfo", respondd_provider_nodeinfo},
- {"statistics", respondd_provider_statistics},
- {"neighbours", respondd_provider_neighbours},
- {}
- };
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