Adds support to load remote rules

src/utils/https_client.cc

@@ -0,0 +1,106 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * You may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+#include "utils/https_client.h"
+#include "src/config.h"
+
+#ifdef MSC_WITH_CURL
+#include <curl/curl.h>
+#endif
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string>
+
+#include <fstream>
+#include <iostream>
+
+#include "src/unique_id.h"
+
+namespace ModSecurity {
+namespace Utils {
+
+
+size_t HttpsClient::handle(char * data, size_t size, size_t nmemb, void * p) {
+    return static_cast<HttpsClient*>(p)->handle_impl(data, size, nmemb);
+}
+
+
+size_t HttpsClient::handle_impl(char* data, size_t size, size_t nmemb) {
+    content.append(data, size * nmemb);
+    return size * nmemb;
+}
+
+
+#ifdef MSC_WITH_CURL
+bool HttpsClient::download(const std::string &uri) {
+    CURL *curl;
+    CURLcode res;
+    std::string uniqueId = "ModSec-unique-id: " + UniqueId::uniqueId();
+
+    curl = curl_easy_init();
+    if (!curl) {
+        error = "Not able to initialize libcurl";
+        return false;
+    }
+
+    struct curl_slist *headers_chunk = NULL;
+    curl_easy_setopt(curl, CURLOPT_URL, uri.c_str());
+
+    headers_chunk = curl_slist_append(headers_chunk, uniqueId.c_str());
+
+    /* Make it TLS 1.x only. */
+    curl_easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
+
+    /* those are the default options, but lets make sure */
+    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1);
+    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 1);
+
+    /* send all data to this function  */
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &HttpsClient::handle);
+
+    /* we pass our 'chunk' struct to the callback function */
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
+
+    curl_easy_setopt(curl, CURLOPT_USERAGENT, "modesecurity3");
+    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers_chunk);
+
+    /* We want Curl to return error in case there is an HTTP error code */
+    curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
+
+    res = curl_easy_perform(curl);
+
+    curl_slist_free_all(headers_chunk);
+
+    if (res != CURLE_OK) {
+        error = curl_easy_strerror(res);
+    }
+
+    curl_easy_cleanup(curl);
+
+    return res == CURLE_OK;
+}
+#else
+bool HttpsClient::download(const std::string &uri) {
+    error = "Not compiled with libcurl support";
+    return false;
+}
+#endif
+
+}  // namespace Utils
+}  // namespace ModSecurity
+

src/utils/https_client.h

@@ -0,0 +1,55 @@
+/*
+ * ModSecurity, http://www.modsecurity.org/
+ * Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
+ *
+ * You may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * If any of the files related to licensing are missing or if you have any
+ * other questions related to licensing please contact Trustwave Holdings, Inc.
+ * directly using the email address security@modsecurity.org.
+ *
+ */
+
+#ifdef MSC_WITH_CURL
+#include <curl/curl.h>
+#endif
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <functional>
+
+#include <GeoIPCity.h>
+
+#ifndef SRC_UTILS_HTTPS_CLIENT_H_
+#define SRC_UTILS_HTTPS_CLIENT_H_
+
+#include "modsecurity/assay.h"
+
+namespace ModSecurity {
+namespace Utils {
+
+
+class HttpsClient {
+ public:
+    HttpsClient()
+        : content(""),
+        error("") { }
+
+    bool download(const std::string &uri);
+    std::string content;
+
+    static size_t handle(char * data, size_t size, size_t nmemb, void * p);
+    size_t handle_impl(char * data, size_t size, size_t nmemb);
+
+    std::string error;
+};
+
+
+}  // namespace Utils
+}  // namespace ModSecurity
+
+#endif  // SRC_UTILS_HTTPS_CLIENT_H_