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check_curl: host_name may be null

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for example when using like: ./check_curl localhost
This commit is contained in:
Sven Nierlein 2020-05-18 14:08:45 +02:00
parent 7d2582deb3
commit 772fb233b9
1 changed files with 4 additions and 4 deletions
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8
plugins/check_curl.c
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@ -127,8 +127,8 @@ int cflags = REG_NOSUB | REG_EXTENDED | REG_NEWLINE;
int errcode;
int invert_regex = 0;
char *server_address;
char *host_name;
char *server_address = NULL;
char *host_name = NULL;
char *server_url = 0;
char server_ip[DEFAULT_BUFFER_SIZE];
struct curl_slist *server_ips = NULL;
@ -367,7 +367,7 @@ check_http (void)
handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_TIMEOUT, socket_timeout), "CURLOPT_TIMEOUT");
// fill dns resolve cache to make curl connect to the given server_address instead of the host_name, only required for ssl, because we use the host_name later on to make SNI happy
if(use_ssl) {
if(use_ssl && host_name != NULL) {
struct curl_slist *host = NULL;
char dnscache[DEFAULT_BUFFER_SIZE];
snprintf (dnscache, DEFAULT_BUFFER_SIZE, "%s:%d:%s", host_name, server_port, server_address);
@ -380,7 +380,7 @@ check_http (void)
/* compose URL: use the address we want to connect to, set Host: header later */
snprintf (url, DEFAULT_BUFFER_SIZE, "%s://%s:%d%s",
use_ssl ? "https" : "http",
use_ssl ? host_name : server_address,
use_ssl & host_name != NULL ? host_name : server_address,
server_port,
server_url
);