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- #include <stdio.h>
- #include <string.h>
- #include <unistd.h>
- #include <json-c/json.h>
- #include <net/if.h>
- #define STR(x) #x
- #define XSTR(x) STR(x)
- static json_object *neighbours(void) {
- struct json_object *obj = json_object_new_object();
- FILE *f;
- f = fopen("/tmp/batman-adv-visdata/bat0/originators" , "r");
- if (f == NULL)
- return NULL;
- while (!feof(f)) {
- char mac1[18];
- char mac2[18];
- char ifname[IF_NAMESIZE+1];
- int tq;
- double lastseen;
- int count = fscanf(f, "%17s%*[\t ]%lfs%*[\t (]%d) %17s%*[[ ]%" XSTR(IF_NAMESIZE) "[^]]]", mac1, &lastseen, &tq, mac2, ifname);
- if (count != 5)
- continue;
- if (strcmp(mac1, mac2) == 0) {
- struct json_object *neigh = json_object_new_object();
- json_object_object_add(neigh, "tq", json_object_new_int(tq));
- json_object_object_add(neigh, "lastseen", json_object_new_double(lastseen));
- json_object_object_add(neigh, "ifname", json_object_new_string(ifname));
- json_object_object_add(obj, mac1, neigh);
- }
- }
- fclose(f);
- return obj;
- }
- int main(void) {
- struct json_object *obj;
- printf("Content-type: text/event-stream\n\n");
- fflush(stdout);
- while (1) {
- obj = neighbours();
- if (obj) {
- printf("data: %s\n\n", json_object_to_json_string_ext(obj, JSON_C_TO_STRING_PLAIN));
- fflush(stdout);
- json_object_put(obj);
- }
- sleep(10);
- }
- return 0;
- }
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