mirror of
https://github.com/Theldus/alertik.git
synced 2024-11-21 23:43:23 +01:00
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*
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* Alertik: a tiny 'syslog' server & notification tool for Mikrotik routers.
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* This is free and unencumbered software released into the public domain.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <curl/curl.h>
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#include "log.h"
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#include "notifiers.h"
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#include "alertik.h"
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/*
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* Notification handling/notifiers
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*/
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/* EPOCH in secs of last sent notification. */
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static time_t time_last_sent_notify;
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/* Just to omit the print to stdout. */
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size_t libcurl_noop_cb(void *ptr, size_t size, size_t nmemb, void *data) {
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((void)ptr);
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((void)data);
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return size * nmemb;
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}
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/**/
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void update_notify_last_sent(void) {
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time_last_sent_notify = time(NULL);
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}
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/**/
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int is_within_notify_threshold(void) {
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return (time(NULL) - time_last_sent_notify) > LAST_SENT_THRESHOLD_SECS;
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}
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//////////////////////////////// TELEGRAM //////////////////////////////////////
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/* Telegram & request settings. */
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static char *telegram_bot_token;
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static char *telegram_chat_id;
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void setup_telegram(void)
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{
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static int setup = 0;
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if (setup)
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return;
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telegram_bot_token = getenv("TELEGRAM_BOT_TOKEN");
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telegram_chat_id = getenv("TELEGRAM_CHAT_ID");
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if (!telegram_bot_token || !telegram_chat_id) {
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panic(
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"Unable to find env vars, please check if you have all of the "
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"following set:\n"
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"- TELEGRAM_BOT_TOKEN\n"
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"- TELEGRAM_CHAT_ID\n"
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);
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}
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setup = 1;
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}
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int send_telegram_notification(const char *msg)
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{
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char full_request_url[4096] = {0};
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char *escaped_msg = NULL;
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CURLcode ret_curl;
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CURL *hnd;
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int ret;
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ret = -1;
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hnd = curl_easy_init();
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if (!hnd) {
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log_msg("> Unable to initialize libcurl!\n");
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return ret;
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}
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log_msg("> Sending notification!\n");
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escaped_msg = curl_easy_escape(hnd, msg, 0);
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if (!escaped_msg) {
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log_msg("> Unable to escape notification message...\n");
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goto error;
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}
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snprintf(
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full_request_url,
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sizeof full_request_url - 1,
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"https://api.telegram.org/bot%s/sendMessage?chat_id=%s&text=%s",
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telegram_bot_token, telegram_chat_id, escaped_msg);
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curl_easy_setopt(hnd, CURLOPT_URL, full_request_url);
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curl_easy_setopt(hnd, CURLOPT_NOPROGRESS, 1L);
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curl_easy_setopt(hnd, CURLOPT_USERAGENT, CURL_USER_AGENT);
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curl_easy_setopt(hnd, CURLOPT_MAXREDIRS, 3L);
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curl_easy_setopt(hnd, CURLOPT_TCP_KEEPALIVE, 1L);
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curl_easy_setopt(hnd, CURLOPT_WRITEFUNCTION, libcurl_noop_cb);
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#ifdef CURL_VERBOSE
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curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
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#endif
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#ifndef VALIDATE_CERTS
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curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYPEER, 0L);
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#endif
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#ifndef DISABLE_NOTIFICATIONS
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ret_curl = curl_easy_perform(hnd);
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if (ret_curl != CURLE_OK) {
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log_msg("> Unable to send request!\n");
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goto error;
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} else {
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log_msg("> Done!\n");
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}
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#endif
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ret = 0;
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error:
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curl_free(escaped_msg);
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curl_easy_cleanup(hnd);
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return ret;
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}
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////////////////////////////////// END ////////////////////////////////////////
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const char *const notifiers_str[] = {
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"Telegram"
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};
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struct notifier notifiers[] = {
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/* Telegram. */
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{
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.setup = setup_telegram,
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.send_notification = send_telegram_notification
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}
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};
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