diff options
Diffstat (limited to 'plugins/check_curl.c')
| -rw-r--r-- | plugins/check_curl.c | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/plugins/check_curl.c b/plugins/check_curl.c index ba08c36b..2c91a275 100644 --- a/plugins/check_curl.c +++ b/plugins/check_curl.c @@ -59,6 +59,8 @@ const char *email = "devel@monitoring-plugins.org"; #include <openssl/opensslv.h> #endif +#include <netdb.h> + #define MAKE_LIBCURL_VERSION(major, minor, patch) ((major)*0x10000 + (minor)*0x100 + (patch)) #define DEFAULT_BUFFER_SIZE 2048 @@ -370,12 +372,55 @@ handle_curl_option_return_code (CURLcode res, const char* option) } int +lookup_host (const char *host, char *buf, size_t buflen) +{ + struct addrinfo hints, *res, *result; + int errcode; + void *ptr; + + memset (&hints, 0, sizeof (hints)); + hints.ai_family = address_family; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags |= AI_CANONNAME; + + errcode = getaddrinfo (host, NULL, &hints, &result); + if (errcode != 0) + return errcode; + + res = result; + + while (res) { + inet_ntop (res->ai_family, res->ai_addr->sa_data, buf, buflen); + switch (res->ai_family) { + case AF_INET: + ptr = &((struct sockaddr_in *) res->ai_addr)->sin_addr; + break; + case AF_INET6: + ptr = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr; + break; + } + inet_ntop (res->ai_family, ptr, buf, buflen); + if (verbose >= 1) + printf ("* getaddrinfo IPv%d address: %s\n", + res->ai_family == PF_INET6 ? 6 : 4, buf); + res = res->ai_next; + } + + freeaddrinfo(result); + + return 0; +} + +int check_http (void) { int result = STATE_OK; int page_len = 0; int i; char *force_host_header = NULL; + struct curl_slist *host = NULL; + char addrstr[100]; + char dnscache[DEFAULT_BUFFER_SIZE]; /* initialize curl */ if (curl_global_init (CURL_GLOBAL_DEFAULT) != CURLE_OK) @@ -418,9 +463,12 @@ check_http (void) // 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 && 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); + if ( (res=lookup_host (server_address, addrstr, 100)) != 0) { + snprintf (msg, DEFAULT_BUFFER_SIZE, _("Unable to lookup IP address for '%s': getaddrinfo returned %d - %s"), + server_address, res, gai_strerror (res)); + die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg); + } + snprintf (dnscache, DEFAULT_BUFFER_SIZE, "%s:%d:%s", host_name, server_port, addrstr); host = curl_slist_append(NULL, dnscache); curl_easy_setopt(curl, CURLOPT_RESOLVE, host); if (verbose>=1) |