static void send_last(struct mg_connection *conn)
{
struct udata *ud = (struct udata *)conn->server_param;
JsonNode *user_array, *o, *one;
char *u = NULL, *d = NULL;
u = field(conn, "user");
d = field(conn, "device");
if ((user_array = last_users(u, d)) != NULL) {
if (u) free(u);
if (d) free(d);
json_foreach(one, user_array) {
JsonNode *f;
o = json_mkobject();
json_append_member(o, "_type", json_mkstring("location"));
if ((f = json_find_member(one, "lat")) != NULL)
json_copy_element_to_object(o, "lat", f);
if ((f = json_find_member(one, "lon")) != NULL)
json_copy_element_to_object(o, "lon", f);
if ((f = json_find_member(one, "tst")) != NULL)
json_copy_element_to_object(o, "tst", f);
if ((f = json_find_member(one, "tid")) != NULL)
json_copy_element_to_object(o, "tid", f);
if ((f = json_find_member(one, "addr")) != NULL)
json_copy_element_to_object(o, "addr", f);
if ((f = json_find_member(one, "topic")) != NULL)
json_copy_element_to_object(o, "topic", f);
http_ws_push_json(ud->mgserver, o);
json_delete(o);
}
json_delete(user_array);
}
static int candidate_line(char *line, void *param)
{
long counter = 0L;
JsonNode *j, *o;
struct jparam *jarg = (struct jparam*)param;
char *bp;
JsonNode *obj = jarg->obj;
JsonNode *locs = jarg->locs;
int limit = jarg->limit;
time_t s_lo = jarg->s_lo;
time_t s_hi = jarg->s_hi;
JsonNode *fields = jarg->fields;
output_type otype = jarg->otype;
if (obj == NULL || obj->tag != JSON_OBJECT)
return (-1);
if (locs == NULL || locs->tag != JSON_ARRAY)
return (-1);
if (limit == 0) {
/* Reading forwards; account for time */
char *p;
struct tm tmline;
time_t secs;
if ((p = strptime(line, "%Y-%m-%dT%H:%M:%SZ", &tmline)) == NULL) {
fprintf(stderr, "no strptime on %s", line);
return (0);
}
secs = mktime(&tmline);
if (secs <= s_lo || secs >= s_hi) {
return (0);
}
if (otype == RAW) {
printf("%s\n", line);
return (0);
} else if (otype == RAWPAYLOAD) {
char *bp;
if ((bp = strchr(line, '{')) != NULL) {
printf("%s\n", bp);
}
}
}
if (limit > 0 && otype == RAW) {
printf("%s\n", line);
return (1); /* make it 'count' or tac() will not decrement line counter and continue until EOF */
}
/* Do we have location line? */
if ((bp = strstr(line, "Z\t* ")) == NULL) { /* Not a location line */
return (0);
}
if ((bp = strrchr(bp, '\t')) == NULL) {
return (0);
}
/* Initialize our counter to what the JSON obj currently has */
if ((j = json_find_member(obj, "count")) != NULL) {
counter = j->number_;
json_delete(j);
}
// fprintf(stderr, "-->[%s]\n", line);
if ((o = line_to_location(line)) != NULL) {
if (fields) {
/* Create a new object, copying members we're interested in into it */
JsonNode *f, *node;
JsonNode *newo = json_mkobject();
json_foreach(f, fields) {
char *key = f->string_;
if ((node = json_find_member(o, key)) != NULL) {
json_copy_element_to_object(newo, key, node);
}
}
json_delete(o);
o = newo;
}
json_append_element(locs, o);
++counter;
}
JsonNode *last_users(char *in_user, char *in_device, JsonNode *fields)
{
JsonNode *obj = json_mkobject();
JsonNode *un, *dn, *userlist = json_mkarray();
char path[BUFSIZ], user[BUFSIZ], device[BUFSIZ];
snprintf(path, BUFSIZ, "%s/last", STORAGEDIR);
// fprintf(stderr, "last_users(%s, %s)\n", (in_user) ? in_user : "******",
// (in_device) ? in_device : "<nil>");
if (user_device_list(path, 0, obj) == 1) {
json_delete(userlist);
return (obj);
}
/* Loop through users, devices */
json_foreach(un, obj) {
if (un->tag != JSON_ARRAY)
continue;
strcpy(user, un->key);
json_foreach(dn, un) {
if (dn->tag == JSON_STRING) {
strcpy(device, dn->string_);
} else if (dn->tag == JSON_NUMBER) { /* all digits? */
sprintf(device, "%.lf", dn->number_);
}
if (!in_user && !in_device) {
append_device_details(userlist, user, device);
} else if (in_user && !in_device) {
if (strcmp(user, in_user) == 0) {
append_device_details(userlist, user, device);
}
} else if (in_user && in_device) {
if (strcmp(user, in_user) == 0 && strcmp(device, in_device) == 0) {
append_device_details(userlist, user, device);
}
}
}
}
json_delete(obj);
/*
* userlist now is an array of user objects. If fields were
* specified, re-create that array with object which have
* only the requested fields. It's a shame we have to re-do
* this here, but I can't think of an alternative way at
* the moment.
*/
if (fields) {
JsonNode *new_userlist = json_mkarray(), *user;
json_foreach(user, userlist) {
JsonNode *o = json_mkobject(), *f, *j;
json_foreach(f, fields) {
char *field_name = f->string_;
if ((j = json_find_member(user, field_name)) != NULL) {
json_copy_element_to_object(o, field_name, j);
}
}
json_append_element(new_userlist, o);
}
