Add lib http client to pktvisor (#696)

conanfile.txt

@@ -3,9 +3,11 @@ catch2/3.4.0
 corrade/2020.06
 cpp-httplib/0.14.1
 docopt.cpp/0.6.3
+gnutls/3.7.8
 fast-cpp-csv-parser/cci.20211104
 json-schema-validator/2.2.0
 libmaxminddb/1.7.1
+libnghttp2/1.57.0
 nlohmann_json/3.11.2
 openssl/1.1.1w
 opentelemetry-proto/1.0.0

libs/CMakeLists.txt

@@ -4,4 +4,7 @@ add_subdirectory(visor_test)
 add_subdirectory(visor_transaction)
 add_subdirectory(visor_tcp)
 add_subdirectory(visor_dns)
-add_subdirectory(visor_utils)
+add_subdirectory(visor_utils)
+if(NOT WIN32)
+    add_subdirectory(visor_http_client)
+endif()

libs/visor_http_client/CMakeLists.txt

@@ -0,0 +1,37 @@
+message(STATUS "Visor Lib HTTP Client")
+
+add_library(VisorLibHttpClient
+        httpssession.cpp
+        tcpsession.cpp
+        url_parser.c
+        )
+add_library(Visor::Lib::HttpClient ALIAS VisorLibHttpClient)
+
+
+target_include_directories(VisorLibHttpClient
+        PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+        )
+
+target_link_libraries(VisorLibHttpClient
+        PUBLIC
+        ${CONAN_LIBS_LIBNGHTTP2}
+        ${CONAN_LIBS_LIBUV}
+        ${CONAN_LIBS_UVW}
+
+        ${CONAN_LIBS_NETTLE}
+        ${CONAN_LIBS_GMP}
+        ${CONAN_LIBS_LIBICONV}
+        ${CONAN_LIBS_ZLIB}
+        ${CONAN_LIBS_ZSTD}
+        ${CONAN_LIBS_BROTLI}
+        ${CONAN_LIBS_GNUTLS}
+        )
+
+## TEST SUITE
+add_executable(unit-tests-visor-http-client test_driver.cpp)
+
+target_link_libraries(unit-tests-visor-http-client
+        PRIVATE
+        Visor::Lib::HttpClient
+        ${CONAN_LIBS_CATCH2})

libs/visor_http_client/base64.cpp

@@ -0,0 +1,120 @@
+/* 
+   base64.cpp and base64.h
+
+   base64 encoding and decoding with C++.
+
+   Version: 1.01.00
+
+   Copyright (C) 2004-2017 René Nyffenegger
+   ALTERED by Jeroen Wijenbergh to allow for encoding of URLs
+
+   This source code is provided 'as-is', without any express or implied
+   warranty. In no event will the author be held liable for any damages
+   arising from the use of this software.
+
+   Permission is granted to anyone to use this software for any purpose,
+   including commercial applications, and to alter it and redistribute it
+   freely, subject to the following restrictions:
+
+   1. The origin of this source code must not be misrepresented; you must not
+      claim that you wrote the original source code. If you use this source code
+      in a product, an acknowledgment in the product documentation would be
+      appreciated but is not required.
+
+   2. Altered source versions must be plainly marked as such, and must not be
+      misrepresented as being the original source code.
+
+   3. This notice may not be removed or altered from any source distribution.
+
+   René Nyffenegger rene.nyffenegger@adp-gmbh.ch
+
+*/
+
+#include "base64.h"
+#include <iostream>
+
+static const std::string base64_chars = 
+             "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+             "abcdefghijklmnopqrstuvwxyz"
+             "0123456789-_";
+
+
+static inline bool is_base64(unsigned char c) {
+  return (isalnum(c) || (c == '-') || (c == '_'));
+}
+
+std::string base64_encode(unsigned char const* bytes_to_encode, unsigned int in_len) {
+  std::string ret;
+  int i = 0;
+  int j = 0;
+  unsigned char char_array_3[3];
+  unsigned char char_array_4[4];
+
+  while (in_len--) {
+    char_array_3[i++] = *(bytes_to_encode++);
+    if (i == 3) {
+      char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
+      char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
+      char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
+      char_array_4[3] = char_array_3[2] & 0x3f;
+
+      for(i = 0; (i <4) ; i++)
+        ret += base64_chars[char_array_4[i]];
+      i = 0;
+    }
+  }
+
+  if (i)
+  {
+    for(j = i; j < 3; j++)
+      char_array_3[j] = '\0';
+
+    char_array_4[0] = ( char_array_3[0] & 0xfc) >> 2;
+    char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
+    char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
+
+    for (j = 0; (j < i + 1); j++)
+      ret += base64_chars[char_array_4[j]];
+
+  }
+
+  return ret;
+
+}
+
+std::string base64_decode(std::string const& encoded_string) {
+  size_t in_len = encoded_string.size();
+  int i = 0;
+  int j = 0;
+  int in_ = 0;
+  unsigned char char_array_4[4], char_array_3[3];
+  std::string ret;
+
+  while (in_len-- && is_base64(encoded_string[in_])) {
+    char_array_4[i++] = encoded_string[in_]; in_++;
+    if (i ==4) {
+      for (i = 0; i <4; i++)
+        char_array_4[i] = base64_chars.find(char_array_4[i]) & 0xff;
+
+      char_array_3[0] = ( char_array_4[0] << 2       ) + ((char_array_4[1] & 0x30) >> 4);
+      char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
+      char_array_3[2] = ((char_array_4[2] & 0x3) << 6) +   char_array_4[3];
+
+      for (i = 0; (i < 3); i++)
+        ret += char_array_3[i];
+      i = 0;
+    }
+  }
+
+  if (i) {
+    for (j = 0; j < i; j++)
+      char_array_4[j] = base64_chars.find(char_array_4[j]) & 0xff;
+
+    char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
+    char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
+
+    for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
+  }
+
+  return ret;
+}

libs/visor_http_client/base64.h

@@ -0,0 +1,14 @@
+//
+//  base64 encoding and decoding with C++.
+//  Version: 1.01.00
+//
+
+#ifndef BASE64_H_C0CE2A47_D10E_42C9_A27C_C883944E704A
+#define BASE64_H_C0CE2A47_D10E_42C9_A27C_C883944E704A
+
+#include <string>
+
+std::string base64_encode(unsigned char const* , unsigned int len);
+std::string base64_decode(std::string const& s);
+
+#endif /* BASE64_H_C0CE2A47_D10E_42C9_A27C_C883944E704A */

libs/visor_http_client/http.h

@@ -0,0 +1,9 @@
+#ifndef FLAMETHROWER_HTTP_H
+#define FLAMETHROWER_HTTP_H
+
+enum class HTTPMethod {
+    POST,
+    GET,
+};
+
+#endif //FLAMETHROWER_HTTP_H