110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <json-c/json.h>
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#include <uci.h>
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#include <respondd.h>
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const unsigned int INVALID_CHANNEL = 0;
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const unsigned int INVALID_TXPOWER = 0;
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static inline unsigned char parse_option(const char *s, unsigned char invalid) {
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char *endptr = NULL;
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long int result;
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if (!s)
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return invalid;
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result = strtol(s, &endptr, 10);
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if (!endptr)
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return invalid;
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if ('\0' != *endptr)
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return invalid;
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if (result > UCHAR_MAX)
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return invalid;
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if (result < 0)
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return invalid;
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return (unsigned char)(result % UCHAR_MAX);
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}
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static struct json_object *respondd_provider_nodeinfo(void) {
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struct uci_context *ctx = NULL;
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struct uci_package *p = NULL;
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struct uci_section *s;
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struct uci_element *e;
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struct json_object *ret = NULL, *wireless = NULL, *v;
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unsigned char tmp;
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ctx = uci_alloc_context();
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if (!ctx)
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goto end;
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ctx->flags &= ~UCI_FLAG_STRICT;
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wireless = json_object_new_object();
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if (!wireless)
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goto end;
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ret = json_object_new_object();
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if (!ret)
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goto end;
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if (uci_load(ctx, "wireless", &p))
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goto end;
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uci_foreach_element(&p->sections, e) {
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s = uci_to_section(e);
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if(!strncmp(s->type,"wifi-device",11)){
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tmp = parse_option(uci_lookup_option_string(ctx, s, "channel"), INVALID_CHANNEL);
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if (tmp != INVALID_CHANNEL) {
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v = json_object_new_int64(tmp);
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if (!v)
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goto end;
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if (tmp >= 1 && tmp <= 14){
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json_object_object_add(wireless, "channel24", v);
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tmp = parse_option(uci_lookup_option_string(ctx, s, "txpower"), INVALID_TXPOWER);
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if (tmp != INVALID_TXPOWER) {
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v = json_object_new_int64(tmp);
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if (!v)
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goto end;
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json_object_object_add(wireless, "txpower24", v);
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}
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// FIXME lowes is 7, but i was able to differ between 2.4 Ghz and 5 Ghz by iwinfo_ops->frequency
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// In EU and US it is 36, so it would be okay for the moment (https://en.wikipedia.org/wiki/List_of_WLAN_channels)
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} else if (tmp >= 36 && tmp < 196){
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json_object_object_add(wireless, "channel5", v);
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tmp = parse_option(uci_lookup_option_string(ctx, s, "txpower"), INVALID_TXPOWER);
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if (tmp != INVALID_TXPOWER) {
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v = json_object_new_int64(tmp);
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if (!v)
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goto end;
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json_object_object_add(wireless, "txpower5", v);
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}
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} else
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json_object_object_add(wireless, "ErrorChannel", v);
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}
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}
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}
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json_object_object_add(ret, "wireless", wireless);
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end:
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if (ctx) {
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if (p)
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uci_unload(ctx, p);
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uci_free_context(ctx);
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}
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return ret;
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}
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const struct respondd_provider_info respondd_providers[] = {
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{"nodeinfo", respondd_provider_nodeinfo},
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{0,0},
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};
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