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/*
** Zabbix
** Copyright (C) 2001-2018 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "common.h"
#include "log.h"
#ifdef HAVE_LIBCURL
extern char *CONFIG_SOURCE_IP;
extern char *CONFIG_SSL_CA_LOCATION;
extern char *CONFIG_SSL_CERT_LOCATION;
extern char *CONFIG_SSL_KEY_LOCATION;
int zbx_http_prepare_ssl(CURL *easyhandle, const char *ssl_cert_file, const char *ssl_key_file,
const char *ssl_key_password, unsigned char verify_peer, unsigned char verify_host,
char **error)
{
CURLcode err;
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_SSL_VERIFYPEER, 0 == verify_peer ? 0L : 1L)))
{
*error = zbx_dsprintf(*error, "Cannot set verify the peer's SSL certificate: %s",
curl_easy_strerror(err));
return FAIL;
}
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_SSL_VERIFYHOST, 0 == verify_host ? 0L : 2L)))
{
*error = zbx_dsprintf(*error, "Cannot set verify the certificate's name against host: %s",
curl_easy_strerror(err));
return FAIL;
}
if (NULL != CONFIG_SOURCE_IP)
{
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_INTERFACE, CONFIG_SOURCE_IP)))
{
*error = zbx_dsprintf(*error, "Cannot specify source interface for outgoing traffic: %s",
curl_easy_strerror(err));
return FAIL;
}
}
if (0 != verify_peer && NULL != CONFIG_SSL_CA_LOCATION)
{
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_CAPATH, CONFIG_SSL_CA_LOCATION)))
{
*error = zbx_dsprintf(*error, "Cannot specify directory holding CA certificates: %s",
curl_easy_strerror(err));
return FAIL;
}
}
if ('\0' != *ssl_cert_file)
{
char *file_name;
file_name = zbx_dsprintf(NULL, "%s/%s", CONFIG_SSL_CERT_LOCATION, ssl_cert_file);
zabbix_log(LOG_LEVEL_DEBUG, "using SSL certificate file: '%s'", file_name);
err = curl_easy_setopt(easyhandle, CURLOPT_SSLCERT, file_name);
zbx_free(file_name);
if (CURLE_OK != err)
{
*error = zbx_dsprintf(*error, "Cannot set SSL client certificate: %s", curl_easy_strerror(err));
return FAIL;
}
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_SSLCERTTYPE, "PEM")))
{
*error = zbx_dsprintf(NULL, "Cannot specify type of the client SSL certificate: %s",
curl_easy_strerror(err));
return FAIL;
}
}
if ('\0' != *ssl_key_file)
{
char *file_name;
file_name = zbx_dsprintf(NULL, "%s/%s", CONFIG_SSL_KEY_LOCATION, ssl_key_file);
zabbix_log(LOG_LEVEL_DEBUG, "using SSL private key file: '%s'", file_name);
err = curl_easy_setopt(easyhandle, CURLOPT_SSLKEY, file_name);
zbx_free(file_name);
if (CURLE_OK != err)
{
*error = zbx_dsprintf(NULL, "Cannot specify private keyfile for TLS and SSL client cert: %s",
curl_easy_strerror(err));
return FAIL;
}
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_SSLKEYTYPE, "PEM")))
{
*error = zbx_dsprintf(NULL, "Cannot set type of the private key file: %s",
curl_easy_strerror(err));
return FAIL;
}
}
if ('\0' != *ssl_key_password)
{
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_KEYPASSWD, ssl_key_password)))
{
*error = zbx_dsprintf(NULL, "Cannot set passphrase to private key: %s",
curl_easy_strerror(err));
return FAIL;
}
}
return SUCCEED;
}
int zbx_http_prepare_auth(CURL *easyhandle, unsigned char authtype, const char *username, const char *password,
char **error)
{
if (HTTPTEST_AUTH_NONE != authtype)
{
long curlauth = 0;
char auth[MAX_STRING_LEN];
CURLcode err;
zabbix_log(LOG_LEVEL_DEBUG, "setting HTTPAUTH [%d]", authtype);
switch (authtype)
{
case HTTPTEST_AUTH_BASIC:
curlauth = CURLAUTH_BASIC;
break;
case HTTPTEST_AUTH_NTLM:
curlauth = CURLAUTH_NTLM;
break;
default:
THIS_SHOULD_NEVER_HAPPEN;
break;
}
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_HTTPAUTH, curlauth)))
{
*error = zbx_dsprintf(*error, "Cannot set HTTP server authentication method: %s",
curl_easy_strerror(err));
return FAIL;
}
zbx_snprintf(auth, sizeof(auth), "%s:%s", username, password);
if (CURLE_OK != (err = curl_easy_setopt(easyhandle, CURLOPT_USERPWD, auth)))
{
*error = zbx_dsprintf(*error, "Cannot set user name and password: %s",
curl_easy_strerror(err));
return FAIL;
}
}
return SUCCEED;
}
char *zbx_http_get_header(char **headers)
{
while ('\0' != **headers)
{
char c, *p_end, *line;
while ('\r' == **headers || '\n' == **headers)
(*headers)++;
p_end = *headers;
while ('\0' != *p_end && '\r' != *p_end && '\n' != *p_end)
p_end++;
if (*headers == p_end)
return NULL;
if ('\0' != (c = *p_end))
*p_end = '\0';
line = zbx_strdup(NULL, *headers);
if ('\0' != c)
*p_end = c;
*headers = p_end;
zbx_lrtrim(line, " \t");
if ('\0' == *line)
zbx_free(line);
else
return line;
}
return NULL;
}
void zbx_http_add_headers(char *headers, struct curl_slist **headers_slist)
{
char *line;
while (NULL != (line = zbx_http_get_header(&headers)))
{
*headers_slist = curl_slist_append(*headers_slist, line);
zbx_free(line);
}
}
#endif
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