Refactor http clients, fix webhook server, add more samples, change tabs to 4 spaces

1 files changed, 94 insertions, 0 deletions

diff --git a/src/net/CurlHttpClient.cpp b/src/net/CurlHttpClient.cpp
new file mode 100644
index 0000000..932fd68
--- /dev/null
+++ b/src/net/CurlHttpClient.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2018 Egor Pugin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifdef HAVE_CURL
+
+#include "tgbot/net/CurlHttpClient.h"
+
+#include <boost/asio/ssl.hpp>
+
+namespace TgBot {
+
+CurlHttpClient::CurlHttpClient() : _httpParser() {
+    curlSettings = curl_easy_init();
+}
+
+CurlHttpClient::~CurlHttpClient() {
+    curl_easy_cleanup(curlSettings);
+}
+
+static size_t curlWriteString(char* ptr, size_t size, size_t nmemb, void* userdata) {
+    std::string &s = *(std::string *)userdata;
+    auto read = size * nmemb;
+    s.append(ptr, ptr + read);
+    return read;
+};
+
+std::string CurlHttpClient::makeRequest(const Url& url, const std::vector<HttpReqArg>& args) const {
+    // Copy settings for each call because we change CURLOPT_URL and other stuff.
+    // This also protects multithreaded case.
+    auto curl = curl_easy_duphandle(curlSettings);
+
+    std::string u = url.protocol + "://" + url.host + url.path;
+    curl_easy_setopt(curl, CURLOPT_URL, u.c_str());
+
+    // disable keep-alive
+    struct curl_slist* headers = nullptr;
+    headers = curl_slist_append(headers, "Connection: close");
+    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+
+    std::string data;
+    std::vector<char*> escaped;
+    if (!args.empty()) {
+        for (const HttpReqArg& a : args) {
+            escaped.push_back(curl_easy_escape(curl, a.name.c_str(), a.name.size()));
+            data += escaped.back() + std::string("=");
+            escaped.push_back(curl_easy_escape(curl, a.value.c_str(), a.value.size()));
+            data += escaped.back() + std::string("&");
+        }
+        data.resize(data.size() - 1);
+        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
+        curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)data.size());
+    }
+
+    std::string response;
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curlWriteString);
+
+    auto res = curl_easy_perform(curl);
+    curl_slist_free_all(headers);
+    curl_easy_cleanup(curl);
+
+    for (auto& e : escaped) {
+        curl_free(e);
+    }
+
+    if (res != CURLE_OK) {
+        throw std::runtime_error(std::string("curl error: ") + curl_easy_strerror(res));
+    }
+
+    return _httpParser.extractBody(response);
+}
+
+}
+
+#endif