Add xxHash library.

module/CMakeLists.txt

@@ -133,7 +133,7 @@ if(WIN32 OR MINGW)
     target_link_libraries(SqModule wsock32 ws2_32 shlwapi)
 endif()
 # Link to base libraries
-target_link_libraries(SqModule Squirrel fmt::fmt SimpleINI TinyDir ConcurrentQueue SAJSON CPR PUGIXML maxminddb libzmq-static)
+target_link_libraries(SqModule Squirrel fmt::fmt SimpleINI TinyDir xxHash ConcurrentQueue SAJSON CPR PUGIXML maxminddb libzmq-static)
 # Link to POCO libraries
 target_link_libraries(SqModule Poco::Foundation Poco::Crypto Poco::Data Poco::Net Poco::JSON Poco::XML)
 # Does POCO have SQLite support?

module/Library/CURL.cpp

@@ -16,6 +16,7 @@ SQMOD_DECL_TYPENAME(SqCpResponse, _SC("SqCprResponse"))
 SQMOD_DECL_TYPENAME(SqCpParameters, _SC("SqCprParameters"))
 SQMOD_DECL_TYPENAME(SqCpPayload, _SC("SqCprPayload"))
 SQMOD_DECL_TYPENAME(SqCpProxies, _SC("SqCprProxies"))
+SQMOD_DECL_TYPENAME(SqCpRedirect, _SC("SqCprRedirect"))
 SQMOD_DECL_TYPENAME(SqCpSession, _SC("SqCprSession"))
 
 /* ------------------------------------------------------------------------------------------------
@@ -404,10 +405,20 @@ static const EnumElement g_StatusCodes[] = {
     {_SC("MISC_CODE_OFFSET"),                       cpr::status::MISC_CODE_OFFSET}
 };
 
+// ------------------------------------------------------------------------------------------------
+static const EnumElement g_PostRedirectFlags[] = {
+    {_SC("Post301"),    static_cast< SQInteger >(cpr::PostRedirectFlags::POST_301)},
+    {_SC("Post302"),    static_cast< SQInteger >(cpr::PostRedirectFlags::POST_302)},
+    {_SC("Post303"),    static_cast< SQInteger >(cpr::PostRedirectFlags::POST_303)},
+    {_SC("Postall"),    static_cast< SQInteger >(cpr::PostRedirectFlags::POST_ALL)},
+    {_SC("None"),       static_cast< SQInteger >(cpr::PostRedirectFlags::NONE)},
+};
+
 // ------------------------------------------------------------------------------------------------
 static const EnumElements g_EnumList[] = {
     {_SC("SqCprErrorCode"),             g_ErrorCodes},
-    {_SC("SqCprStatusCode"), g_StatusCodes}
+    {_SC("SqCprStatusCode"),            g_StatusCodes},
+    {_SC("SqCprPostRedirectFlags"),     g_PostRedirectFlags}
 };
 
 // ================================================================================================
@@ -605,6 +616,26 @@ void Register_CURL(HSQUIRRELVM vm)
         .CbFunc(_SC("While"), &CpProxies::While)
     );
 
+    // --------------------------------------------------------------------------------------------
+    cpns.Bind(_SC("Redirect"),
+        Class< CpRedirect >(vm, SqCpRedirect::Str)
+        // Constructors
+        .Ctor()
+        .Ctor< SQInteger >()
+        .Ctor< SQInteger, bool >()
+        .Ctor< SQInteger, bool, SQInteger >()
+        // Meta-methods
+        .SquirrelFunc(_SC("_typename"), &SqCpRedirect::Fn)
+        // Properties
+        .Prop(_SC("Maximum"), &CpRedirect::GetMaximum, &CpRedirect::SetMaximum)
+        .Prop(_SC("Follow"), &CpRedirect::GetFollow, &CpRedirect::SetFollow)
+        .Prop(_SC("Flags"), &CpRedirect::GetFlags, &CpRedirect::SetFlags)
+        // Member Methods
+        .Func(_SC("SetMaximum"), &CpRedirect::ApplyMaximum)
+        .Func(_SC("SetFollow"), &CpRedirect::ApplyFollow)
+        .Func(_SC("SetFlags"), &CpRedirect::ApplyFlags)
+    );
+
     // --------------------------------------------------------------------------------------------
     cpns.Bind(_SC("Session"),
         Class< CpSession, NoCopy< CpSession > >(vm, SqCpSession::Str)
@@ -631,7 +662,6 @@ void Register_CURL(HSQUIRRELVM vm)
         .Func(_SC("YieldProxies"), &CpSession::YieldProxies)
         .FmtFunc(_SC("SetNTLM"), &CpSession::SetNTLM_)
         .Func(_SC("SetRedirect"), &CpSession::SetRedirect_)
-        .Func(_SC("SetMaxRedirects"), &CpSession::SetMaxRedirects_)
         .Func(_SC("SetCookies"), &CpSession::SetCookies_)
         .FmtFunc(_SC("SetBody"), &CpSession::SetBody_)
         .Func(_SC("SetLowSpeed"), &CpSession::SetLowSpeed_)

module/Library/CURL.hpp

@@ -888,7 +888,7 @@ struct CpResponse : public cpr::Response
     */
     void SetStatusCode(SQInteger value)
     {
-        cpr::Response::status_code = value;
+        cpr::Response::status_code = static_cast< long >(value);
     }
 
     /* --------------------------------------------------------------------------------------------
@@ -1604,6 +1604,152 @@ struct CpProxies : public cpr::Proxies
     }
 };
 
+/* ------------------------------------------------------------------------------------------------
+ * Wrapper for cpr::Redirect that can be bound to the script engine.
+*/
+struct CpRedirect : public cpr::Redirect
+{
+    using cpr::Redirect::Redirect;
+    /* --------------------------------------------------------------------------------------------
+     * Default constructor.
+    */
+    CpRedirect() = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Explicit constructor.
+    */
+    explicit CpRedirect(SQInteger maximum)
+        : cpr::Redirect(static_cast< long >(maximum), true, cpr::PostRedirectFlags::POST_ALL)
+    {
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Explicit constructor.
+    */
+    CpRedirect(SQInteger maximum, bool follow)
+        : cpr::Redirect(static_cast< long >(maximum), follow, cpr::PostRedirectFlags::POST_ALL)
+    {
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Explicit constructor.
+    */
+    CpRedirect(SQInteger maximum, bool follow, SQInteger post_flags)
+        : cpr::Redirect(static_cast< long >(maximum), follow, static_cast< cpr::PostRedirectFlags >(post_flags))
+    {
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy constructor.
+    */
+    explicit CpRedirect(const cpr::Redirect & e) : cpr::Redirect(e) { }
+
+    /* --------------------------------------------------------------------------------------------
+     * Move constructor.
+    */
+    explicit CpRedirect(cpr::Redirect && e) : cpr::Redirect(e) { }
+    
+    /* --------------------------------------------------------------------------------------------
+     * Copy constructor.
+    */
+    CpRedirect(const CpRedirect &) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Move constructor.
+    */
+    CpRedirect(CpRedirect &&) noexcept = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Destructor.
+    */
+    ~CpRedirect() = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Copy assignment operator.
+    */
+    CpRedirect & operator = (const CpRedirect &) = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Move assignment operator.
+    */
+    CpRedirect & operator = (CpRedirect &&) noexcept = default;
+
+    /* --------------------------------------------------------------------------------------------
+     * Retrieve the maximum number of redirects to follow. 0: Refuse any redirects. -1: Infinite number of redirects.
+    */
+    SQMOD_NODISCARD SQInteger GetMaximum() const noexcept
+    {
+        return static_cast< SQInteger >(cpr::Redirect::maximum);
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify the maximum number of redirects to follow. 0: Refuse any redirects. -1: Infinite number of redirects.
+    */
+    void SetMaximum(SQInteger value) noexcept
+    {
+        cpr::Redirect::maximum = static_cast< long >(value);
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify the maximum number of redirects to follow. 0: Refuse any redirects. -1: Infinite number of redirects.
+    */
+    CpRedirect & ApplyMaximum(SQInteger value) noexcept
+    {
+        SetMaximum(value);
+        return *this;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Retrieve whether to follow 3xx redirects.
+    */
+    SQMOD_NODISCARD bool GetFollow() const noexcept
+    {
+        return cpr::Redirect::follow;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify whether to follow 3xx redirects.
+    */
+    void SetFollow(bool value) noexcept
+    {
+        cpr::Redirect::follow = value;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify whether to follow 3xx redirects.
+    */
+    CpRedirect & ApplyFollow(bool value) noexcept
+    {
+        SetMaximum(value);
+        return *this;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Retrieve the flags to control how to act after a redirect for a post request.
+    */
+    SQMOD_NODISCARD bool GetFlags() const noexcept
+    {
+        return cpr::Redirect::follow;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify the flags to control how to act after a redirect for a post request.
+    */
+    void SetFlags(bool value) noexcept
+    {
+        cpr::Redirect::follow = value;
+    }
+
+    /* --------------------------------------------------------------------------------------------
+     * Modify the flags to control how to act after a redirect for a post request.
+    */
+    CpRedirect & ApplyFlags(bool value) noexcept
+    {
+        SetMaximum(value);
+        return *this;
+    }
+};
+
 /* ------------------------------------------------------------------------------------------------
  * Wrapper for cpr::Session that can be bound to the script engine.
 */
@@ -1620,7 +1766,7 @@ struct CpSession : public cpr::Session
     /* --------------------------------------------------------------------------------------------
      * URL constructor.
     */
-    CpSession(StackStrF & url)
+    explicit CpSession(StackStrF & url)
         : cpr::Session()
     {
         cpr::Session::SetUrl(cpr::Url(url.mPtr, url.GetSize()));
@@ -1654,7 +1800,7 @@ struct CpSession : public cpr::Session
     /* --------------------------------------------------------------------------------------------
      * Throw exception if the session is locked.
     */
-    void LockCheck()
+    void LockCheck() const
     {
         if (mPending)
         {
@@ -1827,23 +1973,13 @@ struct CpSession : public cpr::Session
     /* --------------------------------------------------------------------------------------------
      * Modify redirect option.
     */
-    CpSession & SetRedirect_(bool redirect)
+    CpSession & SetRedirect_(CpRedirect & redirect)
     {
         LockCheck();
         cpr::Session::SetRedirect(redirect);
         return *this; // Allow chaining
     }
 
-    /* --------------------------------------------------------------------------------------------
-     * Modify max-redirects option.
-    */
-    CpSession & SetMaxRedirects_(SQInteger max_redirects)
-    {
-        LockCheck();
-        cpr::Session::SetMaxRedirects(cpr::MaxRedirects(static_cast< int32_t >(max_redirects)));
-        return *this; // Allow chaining
-    }
-
     /* --------------------------------------------------------------------------------------------
      * Modify cookies option.
     */

module/Library/String.cpp

@@ -189,7 +189,7 @@ static LightObj SqCenterStr(SQChar f, uint32_t w, StackStrF & s)
     else
     {
         // Calculate the insert position
-        const int32_t p = ((w/2) - (s.mLen/2));
+        const auto p = ((w/2) - (s.mLen/2));
         // Insert only the fill character first
         std::memset(b.Data(), f, w);
         // Overwrite with the specified string
@@ -287,7 +287,7 @@ static Buffer StrToLowercaseImpl(const SQChar * str, uint32_t len)
     while (*str != '\0')
     {
         // Convert it and move to the next one
-        b.At(n++) = std::tolower(*(str++));
+        b.At(n++) = static_cast< char >(std::tolower(*(str++)));
     }
     // End the resulted string
     b.At(n) = '\0';
@@ -349,7 +349,7 @@ static Buffer StrToUppercaseImpl(const SQChar * str, uint32_t len)
     while (*str != '\0')
     {
         // Convert it and move to the next one
-        b.At(n++) = std::toupper(*(str++));
+        b.At(n++) = static_cast< char >(std::toupper(*(str++)));
     }
     // End the resulted string
     b.At(n) = '\0';
@@ -594,7 +594,7 @@ static bool OnlyDelimiter(const SQChar * str, SQChar chr)
 // ------------------------------------------------------------------------------------------------
 static SQInteger SqStrExplode(HSQUIRRELVM vm)
 {
-    const int32_t top = sq_gettop(vm);
+    const auto top = sq_gettop(vm);
     // Was the delimiter character specified?
     if (top <= 1)
     {
@@ -898,6 +898,68 @@ static String StrCharacterSwap(SQInteger a, SQInteger b, StackStrF & val)
     return str;
 }
 
+// ------------------------------------------------------------------------------------------------
+// Returns a size_t, depicting the difference between `a` and `b`. See: https://github.com/wooorm/levenshtein.c
+// See <https://en.wikipedia.org/wiki/Levenshtein_distance> for more information.
+SQMOD_NODISCARD static size_t Levenshtein_n(const char * a, const size_t a_length, const char * b, const size_t b_length) noexcept
+{
+    // Shortcut optimizations / degenerate cases.
+    if (a == b)
+    {
+        return 0;
+    }
+    else if (a_length == 0)
+    {
+        return b_length;
+    }
+    else if (b_length == 0)
+    {
+        return a_length;
+    }
+    auto cache = reinterpret_cast< size_t * >(calloc(a_length, sizeof(size_t)));
+    size_t index = 0;
+    size_t b_index = 0;
+    size_t distance;
+    size_t b_distance;
+    size_t result;
+    char code;
+    // initialize the vector.
+    while (index < a_length)
+    {
+        cache[index] = index + 1;
+        index++;
+    }
+    // Loop
+    while (b_index < b_length)
+    {
+        code = b[b_index];
+        result = distance = b_index++;
+        index = SIZE_MAX;
+
+        while (++index < a_length)
+        {
+            b_distance = code == a[index] ? distance : distance + 1;
+            distance = cache[index];
+
+            cache[index] = result = distance > result
+                ? b_distance > result
+                    ? result + 1
+                    : b_distance
+                : b_distance > distance
+                    ? distance + 1
+                    : b_distance;
+        }
+    }
+    free(cache);
+    return result;
+}
+
+// ------------------------------------------------------------------------------------------------
+static SQInteger SqLevenshtein(StackStrF & a, StackStrF & b)
+{
+    return static_cast< SQInteger >(Levenshtein_n(a.mPtr, static_cast< size_t >(a.mLen), b.mPtr, static_cast< size_t >(b.mLen)));
+}
+
 // ------------------------------------------------------------------------------------------------
 static SQInteger SqStrToI(SQInteger base, StackStrF & s)
 {
@@ -940,6 +1002,7 @@ void Register_String(HSQUIRRELVM vm)
     .FmtFunc(_SC("JustAlnum"), &SqJustAlphaNum)
     .FmtFunc(_SC("ToInt"), &SqStrToI)
     .FmtFunc(_SC("ToFloat"), &SqStrToF)
+    .FmtFunc(_SC("Levenshtein"), &SqLevenshtein)
     .FmtFunc(_SC("AreAllSpace"), &SqAllChars< std::isspace >)
     .FmtFunc(_SC("AreAllPrint"), &SqAllChars< std::isprint >)
     .FmtFunc(_SC("AreAllCntrl"), &SqAllChars< std::iscntrl >)

vendor/CMakeLists.txt

@@ -1,5 +1,6 @@
 add_subdirectory(ConcurrentQueue)
 add_subdirectory(Fmt)
+add_subdirectory(xxHash)
 add_subdirectory(Squirrel)
 add_subdirectory(SimpleIni)
 add_subdirectory(TinyDir)

vendor/CPR/CMakeLists.txt

@@ -13,6 +13,7 @@ add_library(CPR STATIC
     cpr/payload.cpp
     cpr/proxies.cpp
     cpr/proxyauth.cpp
+    cpr/redirect.cpp
     cpr/session.cpp
     cpr/timeout.cpp
     cpr/unix_socket.cpp
@@ -30,14 +31,15 @@ add_library(CPR STATIC
     include/cpr/curlholder.h
     include/cpr/digest.h
     include/cpr/error.h
+    include/cpr/interface.h
     include/cpr/limit_rate.h
-    include/cpr/max_redirects.h
     include/cpr/multipart.h
     include/cpr/ntlm.h
     include/cpr/parameters.h
     include/cpr/payload.h
     include/cpr/proxies.h
     include/cpr/proxyauth.h
+    include/cpr/redirect.h
     include/cpr/response.h
     include/cpr/session.h
     include/cpr/ssl_options.h

vendor/CPR/CONTRIBUTING.md

@@ -1,27 +0,0 @@
-# Contributing to C++ Requests
-
-Please fork this repository and contribute back using [pull requests](https://github.com/whoshuu/cpr/pulls). Features can be requested using [issues](https://github.com/whoshuu/cpr/issues). All code, comments, and critiques are greatly appreciated.
-
-## Formatting
-
-To avoid unproductive debates on formatting, this project uses `clang-format` to ensure a consistent style across all source files. Currently, `clang-format` 3.8 is the version of `clang-format` we use. The format file can be found [here](https://github.com/whoshuu/cpr/blob/master/.clang-format). To install `clang-format` on Ubuntu, run this:
-
-```
-apt-get install clang-format-3.8
-```
-
-To install `clang-format` on OS X, run this:
-
-```
-brew install clang-format
-```
-
-Note that `brew` might install a later version of `clang-format`, but it should be mostly compatible with what's run on the Travis servers.
-
-To run `clang-format` on every source file, run this in the root directory:
-
-```
-./format-check.sh
-```
-
-This should indicate which files need formatting and also show a diff of the requested changes. More specific usage instructions can be found on the official [LLVM website](http://releases.llvm.org/3.8.0/tools/clang/docs/ClangFormat.html).

vendor/CPR/README.md

@@ -1,141 +0,0 @@
-# C++ Requests: Curl for People <img align="right" height="40" src="http://i.imgur.com/d9Xtyts.png">
-
-[![Documentation](https://img.shields.io/badge/docs-online-informational?style=flat&link=https://whoshuu.github.io/cpr/)](https://whoshuu.github.io/cpr/)
-![CI](https://github.com/whoshuu/cpr/workflows/CI/badge.svg)
-
-## Announcements
-
-The cpr project has new maintainers: [Fabian Sauter](https://github.com/com8) and [Tim Stack](https://github.com/tstack).
-
-## TLDR
-
-C++ Requests is a simple wrapper around [libcurl](http://curl.haxx.se/libcurl) inspired by the excellent [Python Requests](https://github.com/kennethreitz/requests) project.
-
-Despite its name, libcurl's easy interface is anything but, and making mistakes misusing it is a common source of error and frustration. Using the more expressive language facilities of C++11, this library captures the essence of making network calls into a few concise idioms.
-
-Here's a quick GET request:
-
-```c++
-#include <cpr/cpr.h>
-
-int main(int argc, char** argv) {
-    cpr::Response r = cpr::Get(cpr::Url{"https://api.github.com/repos/whoshuu/cpr/contributors"},
-                      cpr::Authentication{"user", "pass"},
-                      cpr::Parameters{{"anon", "true"}, {"key", "value"}});
-    r.status_code;                  // 200
-    r.header["content-type"];       // application/json; charset=utf-8
-    r.text;                         // JSON text string
-}
-```
-
-And here's [less functional, more complicated code, without cpr](https://gist.github.com/whoshuu/2dc858b8730079602044).
-
-## Documentation
-
-[![Documentation](https://img.shields.io/badge/docs-online-informational?style=for-the-badge&link=https://whoshuu.github.io/cpr/)](https://whoshuu.github.io/cpr/)  
-You can find the latest documentation [here](https://whoshuu.github.io/cpr). It's a work in progress, but it should give you a better idea of how to use the library than the [tests](https://github.com/whoshuu/cpr/tree/master/test) currently do.
-
-## Features
-
-C++ Requests currently supports:
-
-* Custom headers
-* Url encoded parameters
-* Url encoded POST values
-* Multipart form POST upload
-* File POST upload
-* Basic authentication
-* Bearer authentication
-* Digest authentication
-* NTLM authentication
-* Connection and request timeout specification
-* Timeout for low speed connection
-* Asynchronous requests
-* :cookie: support!
-* Proxy support
-* Callback interfaces
-* PUT methods
-* DELETE methods
-* HEAD methods
-* OPTIONS methods
-* PATCH methods
-* Thread Safe access to [libCurl](https://curl.haxx.se/libcurl/c/threadsafe.html)
-* OpenSSL and WinSSL support for HTTPS requests
-
-## Planned
-
-For a quick overview about the planed features, have a look at the next [Milestones](https://github.com/whoshuu/cpr/milestones).
-
-## Usage
-
-If you already have a project you need to integrate C++ Requests with, the primary way is to use CMake `fetch_content`.
-Add the following to your `CMakeLists.txt`.
-
-
-```cmake
-include(FetchContent)
-FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/whoshuu/cpr.git GIT_TAG c8d33915dbd88ad6c92b258869b03aba06587ff9) # the commit hash for 1.5.0
-FetchContent_MakeAvailable(cpr)
-```
-
-This will produce the target `cpr::cpr` which you can link against the typical way:
-
-```cmake
-target_link_libraries(your_target_name PRIVATE cpr::cpr)
-```
-
-That should do it!
-There's no need to handle `libcurl` yourself. All dependencies are taken care of for you.
-
-## Requirements
-
-The only explicit requirements are:
-
-* a `C++11` compatible compiler such as Clang or GCC. The minimum required version of GCC is unknown, so if anyone has trouble building this library with a specific version of GCC, do let me know
-* If you would like to perform https requests `OpenSSL` and its development libraries are required.
-
-## Building cpr - Using vcpkg
-
-You can download and install cpr using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
-```Bash
-git clone https://github.com/Microsoft/vcpkg.git
-cd vcpkg
-./bootstrap-vcpkg.sh
-./vcpkg integrate install
-./vcpkg install cpr
-```
-The `cpr` port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
-
-## Building cpr - Using Conan
-
-You can download and install `cpr` using the [Conan](https://conan.io/) package manager. Setup your CMakeLists.txt (see [Conan documentation](https://docs.conan.io/en/latest/integrations/build_system.html) on how to use MSBuild, Meson and others) like this:
-
-```CMake
-project(myproject CXX)
-
-add_executable(${PROJECT_NAME} main.cpp)
-
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake) # Include Conan-generated file
-conan_basic_setup(TARGETS) # Introduce Conan-generated targets
-
-target_link_libraries(${PROJECT_NAME} CONAN_PKG::cpr)
-```
-Create `conanfile.txt` in your source dir:
-```
-[requires]
-cpr/1.5.0
-
-[generators]
-cmake
-```
-Install and run Conan, then build your project as always:
-
-```Bash
-pip install conan
-mkdir build
-cd build
-conan install ../ --build=missing
-cmake ../
-cmake --build .
-```
-The `cpr` package in Conan is kept up to date by Conan contributors. If the version is out of date, please [create an issue or pull request](https://github.com/conan-io/conan-center-index) on the `conan-center-index` repository.

vendor/CPR/cpr/curlholder.cpp

@@ -6,9 +6,6 @@ namespace cpr {
 // NOLINTNEXTLINE (cppcoreguidelines-avoid-non-const-global-variables)
 std::mutex CurlHolder::curl_easy_init_mutex_{};
 
-#ifndef _WIN32 // There is no thread sanitizer on windows
-__attribute__((no_sanitize("thread")))
-#endif
 CurlHolder::CurlHolder() {
     /**
      * Allow multithreaded access to CPR by locking curl_easy_init().

vendor/CPR/cpr/proxyauth.cpp

@@ -11,7 +11,6 @@ bool ProxyAuthentication::has(const std::string& protocol) const {
 
 const char* ProxyAuthentication::operator[](const std::string& protocol) {
     return proxyAuth_[protocol].GetAuthString();
-    ;
 }
 
 } // namespace cpr

vendor/CPR/cpr/redirect.cpp

@@ -0,0 +1,40 @@
+#include "cpr/redirect.h"
+
+namespace cpr {
+PostRedirectFlags operator|(PostRedirectFlags lhs, PostRedirectFlags rhs) {
+    return static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+
+PostRedirectFlags operator&(PostRedirectFlags lhs, PostRedirectFlags rhs) {
+    return static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+
+PostRedirectFlags operator^(PostRedirectFlags lhs, PostRedirectFlags rhs) {
+    return static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) ^ static_cast<uint8_t>(rhs));
+}
+
+PostRedirectFlags operator~(PostRedirectFlags flag) {
+    return static_cast<PostRedirectFlags>(~static_cast<uint8_t>(flag));
+}
+
+PostRedirectFlags& operator|=(PostRedirectFlags& lhs, PostRedirectFlags rhs) {
+    lhs = static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+    uint8_t tmp = static_cast<uint8_t>(lhs);
+    lhs = static_cast<PostRedirectFlags>(tmp);
+    return lhs;
+}
+
+PostRedirectFlags& operator&=(PostRedirectFlags& lhs, PostRedirectFlags rhs) {
+    lhs = static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+    return lhs;
+}
+
+PostRedirectFlags& operator^=(PostRedirectFlags& lhs, PostRedirectFlags rhs) {
+    lhs = static_cast<PostRedirectFlags>(static_cast<uint8_t>(lhs) ^ static_cast<uint8_t>(rhs));
+    return lhs;
+}
+
+bool any(PostRedirectFlags flag) {
+    return flag != PostRedirectFlags::NONE;
+}
+} // namespace cpr

vendor/CPR/cpr/response.cpp

@@ -35,7 +35,7 @@ std::vector<std::string> Response::GetCertInfo() {
 
     std::vector<std::string> info;
     info.resize(ci->num_of_certs);
-    for (size_t i = 0; i < ci->num_of_certs; i++) {
+    for (int i = 0; i < ci->num_of_certs; i++) {
         // No way around here.
         // NOLINTNEXTLINE (cppcoreguidelines-pro-bounds-pointer-arithmetic)
         info[i] = std::string{ci->certinfo[i]->data};

vendor/CPR/cpr/session.cpp

@@ -49,8 +49,7 @@ class Session::Impl {
     void SetMultipart(Multipart&& multipart);
     void SetMultipart(const Multipart& multipart);
     void SetNTLM(const NTLM& auth);
-    void SetRedirect(const bool& redirect);
-    void SetMaxRedirects(const MaxRedirects& max_redirects);
+    void SetRedirect(const Redirect& redirect);
     void SetCookies(const Cookies& cookies);
     void SetBody(Body&& body);
     void SetBody(const Body& body);
@@ -65,7 +64,9 @@ class Session::Impl {
     void SetUnixSocket(const UnixSocket& unix_socket);
     void SetVerbose(const Verbose& verbose);
     void SetSslOptions(const SslOptions& options);
+    void SetInterface(const Interface& iface);
 
+    cpr_off_t GetDownloadFileLength();
     Response Delete();
     Response Download(const WriteCallback& write);
     Response Download(std::ofstream& file);
@@ -121,9 +122,8 @@ Session::Impl::Impl() : curl_(new CurlHolder()) {
     curl_version_info_data* version_info = curl_version_info(CURLVERSION_NOW);
     std::string version = "curl/" + std::string{version_info->version};
     curl_easy_setopt(curl_->handle, CURLOPT_USERAGENT, version.c_str());
-    curl_easy_setopt(curl_->handle, CURLOPT_FOLLOWLOCATION, 1L);
+    SetRedirect(Redirect());
     curl_easy_setopt(curl_->handle, CURLOPT_NOPROGRESS, 1L);
-    curl_easy_setopt(curl_->handle, CURLOPT_MAXREDIRS, 50L);
     curl_easy_setopt(curl_->handle, CURLOPT_ERRORBUFFER, curl_->error.data());
     curl_easy_setopt(curl_->handle, CURLOPT_COOKIEFILE, "");
 #ifdef CPR_CURL_NOSIGNAL
@@ -209,6 +209,14 @@ void Session::Impl::SetAuth(const Authentication& auth) {
     curl_easy_setopt(curl_->handle, CURLOPT_USERPWD, auth.GetAuthString());
 }
 
+void Session::Impl::SetInterface(const Interface& iface) {
+    if (iface.str().empty()) {
+        curl_easy_setopt(curl_->handle, CURLOPT_INTERFACE, nullptr);
+    } else {
+        curl_easy_setopt(curl_->handle, CURLOPT_INTERFACE, iface.c_str());
+    }
+}
+
 // Only supported with libcurl >= 7.61.0.
 // As an alternative use SetHeader and add the token manually.
 #if LIBCURL_VERSION_NUM >= 0x073D00
@@ -232,16 +240,14 @@ void Session::Impl::SetUserAgent(const UserAgent& ua) {
 void Session::Impl::SetPayload(Payload&& payload) {
     hasBodyOrPayload_ = true;
     const std::string content = payload.GetContent(*curl_);
-    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE,
-                     static_cast<curl_off_t>(content.length()));
+    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE, static_cast<curl_off_t>(content.length()));
     curl_easy_setopt(curl_->handle, CURLOPT_COPYPOSTFIELDS, content.c_str());
 }
 
 void Session::Impl::SetPayload(const Payload& payload) {
     hasBodyOrPayload_ = true;
     const std::string content = payload.GetContent(*curl_);
-    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE,
-                     static_cast<curl_off_t>(content.length()));
+    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE, static_cast<curl_off_t>(content.length()));
     curl_easy_setopt(curl_->handle, CURLOPT_COPYPOSTFIELDS, content.c_str());
 }
 
@@ -269,9 +275,7 @@ void Session::Impl::SetMultipart(Multipart&& multipart) {
         std::vector<curl_forms> formdata;
         if (part.is_buffer) {
             // Do not use formdata, to prevent having to use reinterpreter_cast:
-            curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, part.name.c_str(), CURLFORM_BUFFER,
-                         part.value.c_str(), CURLFORM_BUFFERPTR, part.data, CURLFORM_BUFFERLENGTH,
-                         part.datalen, CURLFORM_END);
+            curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, part.name.c_str(), CURLFORM_BUFFER, part.value.c_str(), CURLFORM_BUFFERPTR, part.data, CURLFORM_BUFFERLENGTH, part.datalen, CURLFORM_END);
         } else {
             formdata.push_back({CURLFORM_COPYNAME, part.name.c_str()});
             if (part.is_file) {
@@ -302,9 +306,7 @@ void Session::Impl::SetMultipart(const Multipart& multipart) {
         std::vector<curl_forms> formdata;
         if (part.is_buffer) {
             // Do not use formdata, to prevent having to use reinterpreter_cast:
-            curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, part.name.c_str(), CURLFORM_BUFFER,
-                         part.value.c_str(), CURLFORM_BUFFERPTR, part.data, CURLFORM_BUFFERLENGTH,
-                         part.datalen, CURLFORM_END);
+            curl_formadd(&formpost, &lastptr, CURLFORM_COPYNAME, part.name.c_str(), CURLFORM_BUFFER, part.value.c_str(), CURLFORM_BUFFERPTR, part.data, CURLFORM_BUFFERLENGTH, part.datalen, CURLFORM_END);
         } else {
             formdata.push_back({CURLFORM_COPYNAME, part.name.c_str()});
             if (part.is_file) {
@@ -338,12 +340,22 @@ void Session::Impl::SetNTLM(const NTLM& auth) {
     curl_easy_setopt(curl_->handle, CURLOPT_USERPWD, auth.GetAuthString());
 }
 
-void Session::Impl::SetRedirect(const bool& redirect) {
-    curl_easy_setopt(curl_->handle, CURLOPT_FOLLOWLOCATION, std::int32_t(redirect));
-}
+void Session::Impl::SetRedirect(const Redirect& redirect) {
+    curl_easy_setopt(curl_->handle, CURLOPT_FOLLOWLOCATION, redirect.follow ? 1L : 0L);
+    curl_easy_setopt(curl_->handle, CURLOPT_MAXREDIRS, redirect.maximum);
 
-void Session::Impl::SetMaxRedirects(const MaxRedirects& max_redirects) {
-    curl_easy_setopt(curl_->handle, CURLOPT_MAXREDIRS, max_redirects.number_of_redirects);
+    // NOLINTNEXTLINE (google-runtime-int)
+    long mask = 0;
+    if (any(redirect.post_flags & PostRedirectFlags::POST_301)) {
+        mask |= CURL_REDIR_POST_301;
+    }
+    if (any(redirect.post_flags & PostRedirectFlags::POST_302)) {
+        mask |= CURL_REDIR_POST_302;
+    }
+    if (any(redirect.post_flags & PostRedirectFlags::POST_303)) {
+        mask |= CURL_REDIR_POST_303;
+    }
+    curl_easy_setopt(curl_->handle, CURLOPT_POSTREDIR, mask);
 }
 
 void Session::Impl::SetCookies(const Cookies& cookies) {
@@ -353,15 +365,13 @@ void Session::Impl::SetCookies(const Cookies& cookies) {
 
 void Session::Impl::SetBody(Body&& body) {
     hasBodyOrPayload_ = true;
-    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE,
-                     static_cast<curl_off_t>(body.str().length()));
+    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE, static_cast<curl_off_t>(body.str().length()));
     curl_easy_setopt(curl_->handle, CURLOPT_COPYPOSTFIELDS, body.c_str());
 }
 
 void Session::Impl::SetBody(const Body& body) {
     hasBodyOrPayload_ = true;
-    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE,
-                     static_cast<curl_off_t>(body.str().length()));
+    curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDSIZE_LARGE, static_cast<curl_off_t>(body.str().length()));
     curl_easy_setopt(curl_->handle, CURLOPT_POSTFIELDS, body.c_str());
 }
 
@@ -449,13 +459,15 @@ void Session::Impl::SetSslOptions(const SslOptions& options) {
 #if LIBCURL_VERSION_NUM >= 0x072900
     curl_easy_setopt(curl_->handle, CURLOPT_SSL_VERIFYSTATUS, options.verify_status ? ON : OFF);
 #endif
+
+    int maxTlsVersion = options.ssl_version;
+#if SUPPORT_MAX_TLS_VERSION
+    maxTlsVersion |= options.max_version;
+#endif
+
     curl_easy_setopt(curl_->handle, CURLOPT_SSLVERSION,
                      // Ignore here since this has been defined by libcurl.
-                     options.ssl_version
-#if SUPPORT_MAX_TLS_VERSION
-                             | options.max_version
-#endif
-    );
+                     maxTlsVersion);
 #if SUPPORT_SSL_NO_REVOKE
     if (options.ssl_no_revoke) {
         curl_easy_setopt(curl_->handle, CURLOPT_SSL_OPTIONS, CURLSSLOPT_NO_REVOKE);
@@ -479,8 +491,7 @@ void Session::Impl::SetSslOptions(const SslOptions& options) {
     }
 #endif
 #if SUPPORT_SESSIONID_CACHE
-    curl_easy_setopt(curl_->handle, CURLOPT_SSL_SESSIONID_CACHE,
-                     options.session_id_cache ? ON : OFF);
+    curl_easy_setopt(curl_->handle, CURLOPT_SSL_SESSIONID_CACHE, options.session_id_cache ? ON : OFF);
 #endif
 }
 
@@ -491,6 +502,27 @@ void Session::Impl::PrepareDelete() {
     prepareCommon();
 }
 
+cpr_off_t Session::Impl::GetDownloadFileLength() {
+    cpr_off_t downloadFileLenth = -1;
+    curl_easy_setopt(curl_->handle, CURLOPT_URL, url_.c_str());
+
+    std::string protocol = url_.str().substr(0, url_.str().find(':'));
+    if (proxies_.has(protocol)) {
+        curl_easy_setopt(curl_->handle, CURLOPT_PROXY, proxies_[protocol].c_str());
+        if (proxyAuth_.has(protocol)) {
+            curl_easy_setopt(curl_->handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+            curl_easy_setopt(curl_->handle, CURLOPT_PROXYUSERPWD, proxyAuth_[protocol]);
+        }
+    }
+
+    curl_easy_setopt(curl_->handle, CURLOPT_HTTPGET, 1);
+    curl_easy_setopt(curl_->handle, CURLOPT_NOBODY, 1);
+    if (curl_easy_perform(curl_->handle) == CURLE_OK) {
+        curl_easy_getinfo(curl_->handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, &downloadFileLenth);
+    }
+    return downloadFileLenth;
+}
+
 Response Session::Impl::Delete() {
     PrepareDelete();
     return makeRequest();
@@ -498,7 +530,7 @@ Response Session::Impl::Delete() {
 
 Response Session::Impl::Download(const WriteCallback& write) {
     curl_easy_setopt(curl_->handle, CURLOPT_NOBODY, 0L);
-    curl_easy_setopt(curl_->handle, CURLOPT_CUSTOMREQUEST, "GET");
+    curl_easy_setopt(curl_->handle, CURLOPT_HTTPGET, 1);
 
     SetWriteCallback(write);
 
@@ -507,7 +539,7 @@ Response Session::Impl::Download(const WriteCallback& write) {
 
 Response Session::Impl::Download(std::ofstream& file) {
     curl_easy_setopt(curl_->handle, CURLOPT_NOBODY, 0L);
-    curl_easy_setopt(curl_->handle, CURLOPT_CUSTOMREQUEST, "GET");
+    curl_easy_setopt(curl_->handle, CURLOPT_HTTPGET, 1);
     curl_easy_setopt(curl_->handle, CURLOPT_WRITEFUNCTION, cpr::util::writeFileFunction);
     curl_easy_setopt(curl_->handle, CURLOPT_WRITEDATA, &file);
 
@@ -616,8 +648,6 @@ Response Session::Impl::makeDownloadRequest() {
             curl_easy_setopt(curl_->handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
             curl_easy_setopt(curl_->handle, CURLOPT_PROXYUSERPWD, proxyAuth_[protocol]);
         }
-    } else {
-        curl_easy_setopt(curl_->handle, CURLOPT_PROXY, "");
     }
 
     curl_->error[0] = '\0';
@@ -633,14 +663,18 @@ Response Session::Impl::makeDownloadRequest() {
 
     CURLcode curl_error = curl_easy_perform(curl_->handle);
 
+    if (!headercb_.callback) {
+        curl_easy_setopt(curl_->handle, CURLOPT_HEADERFUNCTION, nullptr);
+        curl_easy_setopt(curl_->handle, CURLOPT_HEADERDATA, 0);
+    }
+
     curl_slist* raw_cookies{nullptr};
     curl_easy_getinfo(curl_->handle, CURLINFO_COOKIELIST, &raw_cookies);
     Cookies cookies = util::parseCookies(raw_cookies);
     curl_slist_free_all(raw_cookies);
     std::string errorMsg = curl_->error.data();
 
-    return Response(curl_, "", std::move(header_string), std::move(cookies),
-                    Error(curl_error, std::move(errorMsg)));
+    return Response(curl_, "", std::move(header_string), std::move(cookies), Error(curl_error, std::move(errorMsg)));
 }
 
 void Session::Impl::prepareCommon() {
@@ -665,8 +699,6 @@ void Session::Impl::prepareCommon() {
             curl_easy_setopt(curl_->handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
             curl_easy_setopt(curl_->handle, CURLOPT_PROXYUSERPWD, proxyAuth_[protocol]);
         }
-    } else {
-        curl_easy_setopt(curl_->handle, CURLOPT_PROXY, nullptr);
     }
 
 #if LIBCURL_VERSION_MAJOR >= 7
@@ -700,14 +732,12 @@ void Session::Impl::prepareCommon() {
     curl_easy_setopt(curl_->handle, CURLOPT_CERTINFO, 1L);
 }
 
-Response Session::Impl::makeRequest()
-{
+Response Session::Impl::makeRequest() {
     CURLcode curl_error = curl_easy_perform(curl_->handle);
     return Complete(curl_error);
 }
 
-Response Session::Impl::Complete(CURLcode curl_error)
-{
+Response Session::Impl::Complete(CURLcode curl_error) {
     curl_slist* raw_cookies{nullptr};
     curl_easy_getinfo(curl_->handle, CURLINFO_COOKIELIST, &raw_cookies);
     Cookies cookies = util::parseCookies(raw_cookies);
@@ -717,13 +747,12 @@ Response Session::Impl::Complete(CURLcode curl_error)
     hasBodyOrPayload_ = false;
 
     std::string errorMsg = curl_->error.data();
-    return Response(curl_, std::move(response_string_), std::move(header_string_), std::move(cookies),
-                    Error(curl_error, std::move(errorMsg)));
+    return Response(curl_, std::move(response_string_), std::move(header_string_), std::move(cookies), Error(curl_error, std::move(errorMsg)));
 }
 
 // clang-format off
 Session::Session() : pimpl_(new Impl()) {}
-Session::Session(Session&& old) noexcept = default;
+Session::Session(Session&& /*old*/) noexcept = default;
 Session::~Session() = default;
 Session& Session::operator=(Session&& old) noexcept = default;
 void Session::SetReadCallback(const ReadCallback& read) { pimpl_->SetReadCallback(read); }
@@ -750,8 +779,7 @@ void Session::SetProxyAuth(const ProxyAuthentication& proxy_auth) { pimpl_->SetP
 void Session::SetMultipart(const Multipart& multipart) { pimpl_->SetMultipart(multipart); }
 void Session::SetMultipart(Multipart&& multipart) { pimpl_->SetMultipart(std::move(multipart)); }
 void Session::SetNTLM(const NTLM& auth) { pimpl_->SetNTLM(auth); }
-void Session::SetRedirect(const bool& redirect) { pimpl_->SetRedirect(redirect); }
-void Session::SetMaxRedirects(const MaxRedirects& max_redirects) { pimpl_->SetMaxRedirects(max_redirects); }
+void Session::SetRedirect(const Redirect& redirect) { pimpl_->SetRedirect(redirect); }
 void Session::SetCookies(const Cookies& cookies) { pimpl_->SetCookies(cookies); }
 void Session::SetBody(const Body& body) { pimpl_->SetBody(body); }
 void Session::SetBody(Body&& body) { pimpl_->SetBody(std::move(body)); }
@@ -760,6 +788,7 @@ void Session::SetVerifySsl(const VerifySsl& verify) { pimpl_->SetVerifySsl(verif
 void Session::SetUnixSocket(const UnixSocket& unix_socket) { pimpl_->SetUnixSocket(unix_socket); }
 void Session::SetSslOptions(const SslOptions& options) { pimpl_->SetSslOptions(options); }
 void Session::SetVerbose(const Verbose& verbose) { pimpl_->SetVerbose(verbose); }
+void Session::SetInterface(const Interface& iface) { pimpl_->SetInterface(iface); }
 void Session::SetOption(const ReadCallback& read) { pimpl_->SetReadCallback(read); }
 void Session::SetOption(const HeaderCallback& header) { pimpl_->SetHeaderCallback(header); }
 void Session::SetOption(const WriteCallback& write) { pimpl_->SetWriteCallback(write); }
@@ -789,8 +818,7 @@ void Session::SetOption(const ProxyAuthentication& proxy_auth) { pimpl_->SetProx
 void Session::SetOption(const Multipart& multipart) { pimpl_->SetMultipart(multipart); }
 void Session::SetOption(Multipart&& multipart) { pimpl_->SetMultipart(std::move(multipart)); }
 void Session::SetOption(const NTLM& auth) { pimpl_->SetNTLM(auth); }
-void Session::SetOption(const bool& redirect) { pimpl_->SetRedirect(redirect); }
-void Session::SetOption(const MaxRedirects& max_redirects) { pimpl_->SetMaxRedirects(max_redirects); }
+void Session::SetOption(const Redirect& redirect) { pimpl_->SetRedirect(redirect); }
 void Session::SetOption(const Cookies& cookies) { pimpl_->SetCookies(cookies); }
 void Session::SetOption(const Body& body) { pimpl_->SetBody(body); }
 void Session::SetOption(Body&& body) { pimpl_->SetBody(std::move(body)); }
@@ -799,7 +827,9 @@ void Session::SetOption(const VerifySsl& verify) { pimpl_->SetVerifySsl(verify);
 void Session::SetOption(const Verbose& verbose) { pimpl_->SetVerbose(verbose); }
 void Session::SetOption(const UnixSocket& unix_socket) { pimpl_->SetUnixSocket(unix_socket); }
 void Session::SetOption(const SslOptions& options) { pimpl_->SetSslOptions(options); }
+void Session::SetOption(const Interface& iface) { pimpl_->SetInterface(iface); }
 
+cpr_off_t Session::GetDownloadFileLength() { return pimpl_->GetDownloadFileLength(); }
 Response Session::Delete() { return pimpl_->Delete(); }
 Response Session::Download(const WriteCallback& write) { return pimpl_->Download(write); }
 Response Session::Download(std::ofstream& file) { return pimpl_->Download(file); }

vendor/CPR/cpr/timeout.cpp

@@ -2,28 +2,25 @@
 
 #include <limits>
 #include <stdexcept>
-#include <type_traits>
 #include <string>
+#include <type_traits>
 
 namespace cpr {
 
 // No way around since curl uses a long here.
 // NOLINTNEXTLINE(google-runtime-int)
 long Timeout::Milliseconds() const {
-    static_assert(std::is_same<std::chrono::milliseconds, decltype(ms)>::value,
-                  "Following casting expects milliseconds.");
+    static_assert(std::is_same<std::chrono::milliseconds, decltype(ms)>::value, "Following casting expects milliseconds.");
 
     // No way around since curl uses a long here.
     // NOLINTNEXTLINE(google-runtime-int)
     if (ms.count() > std::numeric_limits<long>::max()) {
-        throw std::overflow_error(
-                "cpr::Timeout: timeout value overflow: " + std::to_string(ms.count()) + " ms.");
+        throw std::overflow_error("cpr::Timeout: timeout value overflow: " + std::to_string(ms.count()) + " ms.");
     }
     // No way around since curl uses a long here.
     // NOLINTNEXTLINE(google-runtime-int)
     if (ms.count() < std::numeric_limits<long>::min()) {
-        throw std::underflow_error(
-                "cpr::Timeout: timeout value underflow: " + std::to_string(ms.count()) + " ms.");
+        throw std::underflow_error("cpr::Timeout: timeout value underflow: " + std::to_string(ms.count()) + " ms.");
     }
 
     // No way around since curl uses a long here.

vendor/CPR/cpr/util.cpp

@@ -89,12 +89,12 @@ std::vector<std::string> split(const std::string& to_split, char delimiter) {
 
 size_t readUserFunction(char* ptr, size_t size, size_t nitems, const ReadCallback* read) {
     size *= nitems;
-    return read->callback(ptr, size) ? size : CURL_READFUNC_ABORT;
+    return (*read)(ptr, size) ? size : CURL_READFUNC_ABORT;
 }
 
 size_t headerUserFunction(char* ptr, size_t size, size_t nmemb, const HeaderCallback* header) {
     size *= nmemb;
-    return header->callback({ptr, size}) ? size : 0;
+    return (*header)({ptr, size}) ? size : 0;
 }
 
 size_t writeFunction(char* ptr, size_t size, size_t nmemb, std::string* data) {
@@ -111,7 +111,7 @@ size_t writeFileFunction(char* ptr, size_t size, size_t nmemb, std::ofstream* fi
 
 size_t writeUserFunction(char* ptr, size_t size, size_t nmemb, const WriteCallback* write) {
     size *= nmemb;
-    return write->callback({ptr, size}) ? size : 0;
+    return (*write)({ptr, size}) ? size : 0;
 }
 
 #if LIBCURL_VERSION_NUM < 0x072000
@@ -121,12 +121,12 @@ int progressUserFunction(const ProgressCallback* progress, double dltotal, doubl
 int progressUserFunction(const ProgressCallback* progress, curl_off_t dltotal, curl_off_t dlnow,
                          curl_off_t ultotal, curl_off_t ulnow) {
 #endif
-    return progress->callback(dltotal, dlnow, ultotal, ulnow) ? 0 : 1;
+    return (*progress)(dltotal, dlnow, ultotal, ulnow) ? 0 : 1;
 }
 
 int debugUserFunction(CURL* /*handle*/, curl_infotype type, char* data, size_t size,
                       const DebugCallback* debug) {
-    debug->callback(DebugCallback::InfoType(type), std::string(data, size));
+    (*debug)(DebugCallback::InfoType(type), std::string(data, size));
     return 0;
 }
 

vendor/CPR/include/cpr/callback.h

@@ -12,46 +12,54 @@ class ReadCallback {
   public:
     ReadCallback() = default;
     // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
-    ReadCallback(std::function<bool(char* buffer, size_t& size)> p_callback)
-            : size{-1}, callback{std::move(p_callback)} {}
-    ReadCallback(cpr_off_t p_size, std::function<bool(char* buffer, size_t& size)> p_callback)
-            : size{p_size}, callback{std::move(p_callback)} {}
+    ReadCallback(std::function<bool(char* buffer, size_t& size, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), size{-1}, callback{std::move(p_callback)} {}
+    ReadCallback(cpr_off_t p_size, std::function<bool(char* buffer, size_t& size, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), size{p_size}, callback{std::move(p_callback)} {}
+    bool operator()(char* buffer, size_t& size) const {
+        return callback(buffer, size, userdata);
+    }
 
+    intptr_t userdata;
     cpr_off_t size{};
-    std::function<bool(char* buffer, size_t& size)> callback;
+    std::function<bool(char* buffer, size_t& size, intptr_t userdata)> callback;
 };
 
 class HeaderCallback {
   public:
     HeaderCallback() = default;
     // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
-    HeaderCallback(std::function<bool(std::string header)> p_callback)
-            : callback(std::move(p_callback)) {}
+    HeaderCallback(std::function<bool(std::string header, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), callback(std::move(p_callback)) {}
+    bool operator()(std::string header) const {
+        return callback(std::move(header), userdata);
+    }
 
-    std::function<bool(std::string header)> callback;
+    intptr_t userdata;
+    std::function<bool(std::string header, intptr_t userdata)> callback;
 };
 
 class WriteCallback {
   public:
     WriteCallback() = default;
     // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
-    WriteCallback(std::function<bool(std::string data)> p_callback) : callback(std::move(p_callback)) {}
+    WriteCallback(std::function<bool(std::string data, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), callback(std::move(p_callback)) {}
+    bool operator()(std::string data) const {
+        return callback(std::move(data), userdata);
+    }
 
-    std::function<bool(std::string data)> callback;
+    intptr_t userdata;
+    std::function<bool(std::string data, intptr_t userdata)> callback;
 };
 
 class ProgressCallback {
   public:
     ProgressCallback() = default;
     // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
-    ProgressCallback(std::function<bool(size_t downloadTotal, size_t downloadNow,
-                                        size_t uploadTotal, size_t uploadNow)>
-                             p_callback)
-            : callback(std::move(p_callback)) {}
+    ProgressCallback(std::function<bool(cpr_off_t downloadTotal, cpr_off_t downloadNow, cpr_off_t uploadTotal, cpr_off_t uploadNow, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), callback(std::move(p_callback)) {}
+    bool operator()(cpr_off_t downloadTotal, cpr_off_t downloadNow, cpr_off_t uploadTotal, cpr_off_t uploadNow) const {
+        return callback(downloadTotal, downloadNow, uploadTotal, uploadNow, userdata);
+    }
 
-    std::function<bool(size_t downloadTotal, size_t downloadNow, size_t uploadTotal,
-                       size_t uploadNow)>
-            callback;
+    intptr_t userdata;
+    std::function<bool(size_t downloadTotal, size_t downloadNow, size_t uploadTotal, size_t uploadNow, intptr_t userdata)> callback;
 };
 
 class DebugCallback {
@@ -67,10 +75,13 @@ class DebugCallback {
     };
     DebugCallback() = default;
     // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
-    DebugCallback(std::function<void(InfoType type, std::string data)> p_callback)
-            : callback(std::move(p_callback)) {}
+    DebugCallback(std::function<void(InfoType type, std::string data, intptr_t userdata)> p_callback, intptr_t p_userdata = 0) : userdata(p_userdata), callback(std::move(p_callback)) {}
+    void operator()(InfoType type, std::string data) const {
+        callback(type, std::move(data), userdata);
+    }
 
-    std::function<void(InfoType type, std::string data)> callback;
+    intptr_t userdata;
+    std::function<void(InfoType type, std::string data, intptr_t userdata)> callback;
 };
 
 } // namespace cpr

vendor/CPR/include/cpr/cpr.h

@@ -4,6 +4,8 @@
 #include "cpr/api.h"
 #include "cpr/auth.h"
 #include "cpr/cprtypes.h"
+#include "cpr/interface.h"
+#include "cpr/redirect.h"
 #include "cpr/response.h"
 #include "cpr/session.h"
 #include "cpr/status_codes.h"

vendor/CPR/include/cpr/interface.h

@@ -0,0 +1,32 @@
+#ifndef CPR_INTERFACE_H
+#define CPR_INTERFACE_H
+
+#include <initializer_list>
+#include <string>
+
+#include "cpr/cprtypes.h"
+
+namespace cpr {
+
+class Interface : public StringHolder<Interface> {
+  public:
+    Interface() : StringHolder<Interface>() {}
+    // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
+    Interface(const std::string& iface) : StringHolder<Interface>(iface) {}
+    // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
+    Interface(std::string&& iface) : StringHolder<Interface>(std::move(iface)) {}
+    // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
+    Interface(const char* iface) : StringHolder<Interface>(iface) {}
+    Interface(const char* str, size_t len) : StringHolder<Interface>(str, len) {}
+    Interface(const std::initializer_list<std::string> args) : StringHolder<Interface>(args) {}
+    Interface(const Interface& other) = default;
+    Interface(Interface&& old) noexcept = default;
+    ~Interface() override = default;
+
+    Interface& operator=(Interface&& old) noexcept = default;
+    Interface& operator=(const Interface& other) = default;
+};
+
+} // namespace cpr
+
+#endif

vendor/CPR/include/cpr/max_redirects.h

@@ -1,18 +0,0 @@
-#ifndef CPR_MAX_REDIRECTS_H
-#define CPR_MAX_REDIRECTS_H
-
-#include <cstdint>
-
-namespace cpr {
-
-class MaxRedirects {
-  public:
-    explicit MaxRedirects(const std::int32_t p_number_of_redirects)
-            : number_of_redirects(p_number_of_redirects) {}
-
-    std::int32_t number_of_redirects;
-};
-
-} // namespace cpr
-
-#endif

vendor/CPR/include/cpr/redirect.h

@@ -0,0 +1,77 @@
+#ifndef CPR_REDIRECT_H
+#define CPR_REDIRECT_H
+
+#include <cstdint>
+
+namespace cpr {
+enum class PostRedirectFlags : uint8_t {
+    /**
+     * Respect RFC 7231 (section 6.4.2 to 6.4.4).
+     * Same as CURL_REDIR_POST_301 (https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html).
+     **/
+    POST_301 = 0x1 << 0,
+    /**
+     * Maintain the request method after a 302 redirect.
+     * Same as CURL_REDIR_POST_302 (https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html).
+     **/
+    POST_302 = 0x1 << 1,
+    /**
+     * Maintain the request method after a 303 redirect.
+     * Same as CURL_REDIR_POST_303 (https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html).
+     **/
+    POST_303 = 0x1 << 2,
+    /**
+     * Default value.
+     * Convenience option to enable all flags.
+     * Same as CURL_REDIR_POST_ALL (https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html).
+     **/
+    POST_ALL = POST_301 | POST_302 | POST_303,
+    /**
+     * * Convenience option to disable all flags.
+     **/
+    NONE = 0x0
+};
+
+PostRedirectFlags operator|(PostRedirectFlags lhs, PostRedirectFlags rhs);
+PostRedirectFlags operator&(PostRedirectFlags lhs, PostRedirectFlags rhs);
+PostRedirectFlags operator^(PostRedirectFlags lhs, PostRedirectFlags rhs);
+PostRedirectFlags operator~(PostRedirectFlags flag);
+PostRedirectFlags& operator|=(PostRedirectFlags& lhs, PostRedirectFlags rhs);
+PostRedirectFlags& operator&=(PostRedirectFlags& lhs, PostRedirectFlags rhs);
+PostRedirectFlags& operator^=(PostRedirectFlags& lhs, PostRedirectFlags rhs);
+bool any(PostRedirectFlags flag);
+
+class Redirect {
+  public:
+    /**
+     * The maximum number of redirects to follow.
+     * 0: Refuse any redirects.
+     * -1: Infinite number of redirects.
+     * Default: 50
+     * https://curl.se/libcurl/c/CURLOPT_MAXREDIRS.html
+     **/
+    // NOLINTNEXTLINE (cppcoreguidelines-avoid-magic-numbers, google-runtime-int)
+    long maximum{50L};
+    /**
+     * Follow 3xx redirects.
+     * Default: true
+     * https://curl.se/libcurl/c/CURLOPT_FOLLOWLOCATION.html
+     **/
+    bool follow{true};
+    /**
+     * Flags to control how to act after a redirect for a post request.
+     * Default: POST_ALL
+     **/
+    PostRedirectFlags post_flags{PostRedirectFlags::POST_ALL};
+
+    Redirect() = default;
+    // NOLINTNEXTLINE (google-runtime-int)
+    Redirect(long p_maximum, bool p_follow, PostRedirectFlags p_post_flags) : maximum(p_maximum), follow(p_follow), post_flags(p_post_flags){};
+    // NOLINTNEXTLINE (google-runtime-int)
+    explicit Redirect(long p_maximum) : maximum(p_maximum){};
+    explicit Redirect(bool p_follow) : follow(p_follow){};
+    explicit Redirect(PostRedirectFlags p_post_flags) : post_flags(p_post_flags){};
+};
+} // namespace cpr
+
+#endif

vendor/CPR/include/cpr/session.h

@@ -14,15 +14,16 @@
 #include "cpr/cprtypes.h"
 #include "cpr/curlholder.h"
 #include "cpr/digest.h"
+#include "cpr/interface.h"
 #include "cpr/limit_rate.h"
 #include "cpr/low_speed.h"
-#include "cpr/max_redirects.h"
 #include "cpr/multipart.h"
 #include "cpr/ntlm.h"
 #include "cpr/parameters.h"
 #include "cpr/payload.h"
 #include "cpr/proxies.h"
 #include "cpr/proxyauth.h"
+#include "cpr/redirect.h"
 #include "cpr/response.h"
 #include "cpr/ssl_options.h"
 #include "cpr/timeout.h"
@@ -62,8 +63,7 @@ class Session {
     void SetMultipart(Multipart&& multipart);
     void SetMultipart(const Multipart& multipart);
     void SetNTLM(const NTLM& auth);
-    void SetRedirect(const bool& redirect);
-    void SetMaxRedirects(const MaxRedirects& max_redirects);
+    void SetRedirect(const Redirect& redirect);
     void SetCookies(const Cookies& cookies);
     void SetBody(Body&& body);
     void SetBody(const Body& body);
@@ -77,6 +77,7 @@ class Session {
     void SetProgressCallback(const ProgressCallback& progress);
     void SetDebugCallback(const DebugCallback& debug);
     void SetVerbose(const Verbose& verbose);
+    void SetInterface(const Interface& iface);
 
     // Used in templated functions
     void SetOption(const Url& url);
@@ -103,8 +104,7 @@ class Session {
     void SetOption(Multipart&& multipart);
     void SetOption(const Multipart& multipart);
     void SetOption(const NTLM& auth);
-    void SetOption(const bool& redirect);
-    void SetOption(const MaxRedirects& max_redirects);
+    void SetOption(const Redirect& redirect);
     void SetOption(const Cookies& cookies);
     void SetOption(Body&& body);
     void SetOption(const Body& body);
@@ -118,7 +118,9 @@ class Session {
     void SetOption(const Verbose& verbose);
     void SetOption(const UnixSocket& unix_socket);
     void SetOption(const SslOptions& options);
+    void SetOption(const Interface& iface);
 
+    cpr_off_t GetDownloadFileLength();
     Response Delete();
     Response Download(const WriteCallback& write);
     Response Download(std::ofstream& file);

vendor/xxHash/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Create the xxHash library
+add_library(xxHash STATIC
+	xxhash.h
+	xxhash.c
+)
+# Set speciffic options
+target_compile_options(xxHash PRIVATE -fvisibility=hidden)
+# Includes
+target_include_directories(xxHash PRIVATE ${CMAKE_CURRENT_LIST_DIR})
+# Private library defines
+#target_compile_definitions(xxHash PRIVATE )
+# Public library defines
+# target_compile_definitions(xxHash PUBLIC )

vendor/xxHash/LICENSE

@@ -0,0 +1,48 @@
+xxHash Library
+Copyright (c) 2012-2020 Yann Collet
+All rights reserved.
+
+BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------
+
+xxhsum command line interface
+Copyright (c) 2013-2020 Yann Collet
+All rights reserved.
+
+GPL v2 License
+
+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.

vendor/xxHash/xxhash.c

@@ -0,0 +1,43 @@
+/*
+ * xxHash - Extremely Fast Hash algorithm
+ * Copyright (C) 2012-2020 Yann Collet
+ *
+ * BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following disclaimer
+ *      in the documentation and/or other materials provided with the
+ *      distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You can contact the author at:
+ *   - xxHash homepage: https://www.xxhash.com
+ *   - xxHash source repository: https://github.com/Cyan4973/xxHash
+ */
+
+
+/*
+ * xxhash.c instantiates functions defined in xxhash.h
+ */
+
+#define XXH_STATIC_LINKING_ONLY   /* access advanced declarations */
+#define XXH_IMPLEMENTATION   /* access definitions */
+
+#include "xxhash.h"