Add the full source of BambuStudio

using version 1.0.10

src/slic3r/Utils/Http.cpp

@@ -0,0 +1,804 @@
+#include "Http.hpp"
+
+#include <cstdlib>
+#include <functional>
+#include <thread>
+#include <deque>
+#include <sstream>
+#include <exception>
+#include <boost/filesystem/fstream.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/format.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <curl/curl.h>
+
+#ifdef OPENSSL_CERT_OVERRIDE
+#include <openssl/x509.h>
+#endif
+
+namespace fs = boost::filesystem;
+
+namespace Slic3r {
+
+// Private
+
+struct CurlGlobalInit
+{
+    static std::unique_ptr<CurlGlobalInit> instance;
+    std::string message;
+
+	CurlGlobalInit()
+    {
+#ifdef OPENSSL_CERT_OVERRIDE // defined if SLIC3R_STATIC=ON
+
+        // Look for a set of distro specific directories. Don't change the
+        // order: https://bugzilla.redhat.com/show_bug.cgi?id=1053882
+        static const char * CA_BUNDLES[] = {
+            "/etc/pki/tls/certs/ca-bundle.crt",   // Fedora/RHEL 6
+            "/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc.
+            "/usr/share/ssl/certs/ca-bundle.crt",
+            "/usr/local/share/certs/ca-root-nss.crt", // FreeBSD
+            "/etc/ssl/cert.pem",
+            "/etc/ssl/ca-bundle.pem"              // OpenSUSE Tumbleweed
+        };
+
+        namespace fs = boost::filesystem;
+        // Env var name for the OpenSSL CA bundle (SSL_CERT_FILE nomally)
+        const char *const SSL_CA_FILE = X509_get_default_cert_file_env();
+        const char * ssl_cafile = ::getenv(SSL_CA_FILE);
+
+        if (!ssl_cafile)
+            ssl_cafile = X509_get_default_cert_file();
+
+        int replace = true;
+        if (!ssl_cafile || !fs::exists(fs::path(ssl_cafile))) {
+            const char * bundle = nullptr;
+            for (const char * b : CA_BUNDLES) {
+                if (fs::exists(fs::path(b))) {
+                    ::setenv(SSL_CA_FILE, bundle = b, replace);
+                    break;
+                }
+            }
+
+            if (!bundle)
+                message = "Unable to get system certificate.";
+            else
+                message = (boost::format("use system SSL certificate: %1%") % bundle).str();
+
+             message += "\n" + (boost::format("To manually specify the system certificate store, "
+                                                   "set the %1% environment variable to the correct CA and restart the application") % SSL_CA_FILE).str();
+        }
+#endif // OPENSSL_CERT_OVERRIDE
+
+        if (CURLcode ec = ::curl_global_init(CURL_GLOBAL_DEFAULT)) {
+            message += "CURL initialization failed. See the log for additional details.";
+            BOOST_LOG_TRIVIAL(error) << ::curl_easy_strerror(ec);
+        }
+    }
+
+	~CurlGlobalInit() { ::curl_global_cleanup(); }
+};
+
+std::unique_ptr<CurlGlobalInit> CurlGlobalInit::instance;
+
+struct Http::priv
+{
+	enum {
+		DEFAULT_TIMEOUT_CONNECT = 10,
+        DEFAULT_TIMEOUT_MAX = 0,
+		DEFAULT_SIZE_LIMIT = 1024 * 1024 * 1024,
+	};
+
+	::CURL *curl;
+	::curl_httppost *form;
+	::curl_httppost *form_end;
+	::curl_mime* mime;
+	::curl_slist *headerlist;
+	// Used for reading the body
+	std::string buffer;
+	// Used for storing file streams added as multipart form parts
+	// Using a deque here because unlike vector it doesn't ivalidate pointers on insertion
+	std::deque<fs::ifstream> form_files;
+	std::string postfields;
+	std::string error_buffer;    // Used for CURLOPT_ERRORBUFFER
+    std::string headers;
+	size_t limit;
+	bool cancel;
+    std::unique_ptr<fs::ifstream> putFile;
+
+	std::thread io_thread;
+	Http::CompleteFn completefn;
+	Http::ErrorFn errorfn;
+	Http::ProgressFn progressfn;
+	Http::IPResolveFn ipresolvefn;
+	Http::HeaderCallbackFn headerfn;
+
+	priv(const std::string &url);
+	~priv();
+
+	static bool ca_file_supported(::CURL *curl);
+	static size_t writecb(void *data, size_t size, size_t nmemb, void *userp);
+	static int xfercb(void *userp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);
+	static int xfercb_legacy(void *userp, double dltotal, double dlnow, double ultotal, double ulnow);
+	static size_t form_file_read_cb(char *buffer, size_t size, size_t nitems, void *userp);
+    static size_t headers_cb(char *buffer, size_t size, size_t nitems, void *userp);
+
+	void set_timeout_connect(long timeout);
+    void set_timeout_max(long timeout);
+	void form_add_file(const char *name, const fs::path &path, const char* filename);
+	/* mime */
+	void mime_form_add_text(const char* name, const char* value);
+	void mime_form_add_file(const char* name, const char* path);
+	void set_post_body(const fs::path &path);
+	void set_post_body(const std::string &body);
+	void set_put_body(const fs::path &path);
+	void set_del_body(const std::string& body);
+
+	std::string curl_error(CURLcode curlcode);
+	std::string body_size_error();
+	void http_perform();
+};
+
+Http::priv::priv(const std::string &url)
+	: curl(::curl_easy_init())
+	, form(nullptr)
+	, form_end(nullptr)
+	, mime(nullptr)
+	, headerlist(nullptr)
+	, error_buffer(CURL_ERROR_SIZE + 1, '\0')
+	, limit(0)
+	, cancel(false)
+{
+    Http::tls_global_init();
+
+	if (curl == nullptr) {
+		throw Slic3r::RuntimeError(std::string("Could not construct Curl object"));
+	}
+
+	set_timeout_connect(DEFAULT_TIMEOUT_CONNECT);
+    set_timeout_max(DEFAULT_TIMEOUT_MAX);
+	::curl_easy_setopt(curl, CURLOPT_URL, url.c_str());   // curl makes a copy internally
+	::curl_easy_setopt(curl, CURLOPT_USERAGENT, SLIC3R_APP_NAME "/" SLIC3R_VERSION);
+	::curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, &error_buffer.front());
+
+	::curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+	::curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
+}
+
+Http::priv::~priv()
+{
+	::curl_easy_cleanup(curl);
+	::curl_formfree(form);
+	::curl_mime_free(mime);
+	::curl_slist_free_all(headerlist);
+}
+
+bool Http::priv::ca_file_supported(::CURL *curl)
+{
+	//BBS support set ca file by default
+	bool res = true;
+
+	if (curl == nullptr) { return res; }
+
+#if LIBCURL_VERSION_MAJOR >= 7 && LIBCURL_VERSION_MINOR >= 48
+	::curl_tlssessioninfo *tls;
+	if (::curl_easy_getinfo(curl, CURLINFO_TLS_SSL_PTR, &tls) == CURLE_OK) {
+		if (tls->backend == CURLSSLBACKEND_SCHANNEL || tls->backend == CURLSSLBACKEND_DARWINSSL) {
+			// With Windows and OS X native SSL support, cert files cannot be set
+			res = false;
+		}
+	}
+#endif
+
+	return res;
+}
+
+size_t Http::priv::writecb(void *data, size_t size, size_t nmemb, void *userp)
+{
+	auto self = static_cast<priv*>(userp);
+	const char *cdata = static_cast<char*>(data);
+	const size_t realsize = size * nmemb;
+
+	const size_t limit = self->limit > 0 ? self->limit : DEFAULT_SIZE_LIMIT;
+	if (self->buffer.size() + realsize > limit) {
+		// This makes curl_easy_perform return CURLE_WRITE_ERROR
+		return 0;
+	}
+
+	self->buffer.append(cdata, realsize);
+
+	return realsize;
+}
+
+int Http::priv::xfercb(void *userp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
+{
+	auto self = static_cast<priv*>(userp);
+	bool cb_cancel = false;
+
+	if (self->progressfn) {
+		double speed;
+        curl_easy_getinfo(self->curl, CURLINFO_SPEED_UPLOAD, &speed);
+		if (speed > 0.01)
+			speed = speed;
+		Progress progress(dltotal, dlnow, ultotal, ulnow, speed);
+		self->progressfn(progress, cb_cancel);
+	}
+
+	if (cb_cancel) { self->cancel = true; }
+
+	return self->cancel;
+}
+
+int Http::priv::xfercb_legacy(void *userp, double dltotal, double dlnow, double ultotal, double ulnow)
+{
+	return xfercb(userp, dltotal, dlnow, ultotal, ulnow);
+}
+
+size_t Http::priv::form_file_read_cb(char *buffer, size_t size, size_t nitems, void *userp)
+{
+	auto stream = reinterpret_cast<fs::ifstream*>(userp);
+
+	try {
+		stream->read(buffer, size * nitems);
+	} catch (const std::exception &) {
+		return CURL_READFUNC_ABORT;
+	}
+
+	return stream->gcount();
+}
+
+size_t Http::priv::headers_cb(char *buffer, size_t size, size_t nitems, void *userp)
+{
+	auto self = static_cast<priv*>(userp);
+
+	if (self->headerfn) {
+        self->headers.append(buffer, nitems * size);
+		self->headerfn(self->headers);
+	}
+	return nitems * size;
+}
+
+void Http::priv::set_timeout_connect(long timeout)
+{
+	::curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, timeout);
+}
+
+void Http::priv::set_timeout_max(long timeout)
+{
+    ::curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
+}
+
+void Http::priv::form_add_file(const char *name, const fs::path &path, const char* filename)
+{
+	// We can't use CURLFORM_FILECONTENT, because curl doesn't support Unicode filenames on Windows
+	// and so we use CURLFORM_STREAM with boost ifstream to read the file.
+
+	if (filename == nullptr) {
+		filename = path.string().c_str();
+	}
+
+	form_files.emplace_back(path, std::ios::in | std::ios::binary);
+	auto &stream = form_files.back();
+	stream.seekg(0, std::ios::end);
+	size_t size = stream.tellg();
+	stream.seekg(0);
+
+	if (filename != nullptr) {
+		::curl_formadd(&form, &form_end,
+			CURLFORM_COPYNAME, name,
+			CURLFORM_FILENAME, filename,
+			CURLFORM_CONTENTTYPE, "application/octet-stream",
+			CURLFORM_STREAM, static_cast<void*>(&stream),
+			CURLFORM_CONTENTSLENGTH, static_cast<long>(size),
+			CURLFORM_END
+		);
+	}
+}
+
+void Http::priv::mime_form_add_text(const char* name, const char* value)
+{
+	if (!mime) {
+		mime = curl_mime_init(curl);
+	}
+
+	curl_mimepart *part;
+	part = curl_mime_addpart(mime);
+	curl_mime_name(part, name);
+	curl_mime_type(part, "multipart/form-data");
+	curl_mime_data(part, value, CURL_ZERO_TERMINATED);
+}
+
+void Http::priv::mime_form_add_file(const char* name, const char* path)
+{
+	if (!mime) {
+		mime = curl_mime_init(curl);
+	}
+
+	curl_mimepart* part;
+	part = curl_mime_addpart(mime);
+	curl_mime_name(part, "file");
+	curl_mime_type(part, "multipart/form-data");
+	curl_mime_filedata(part, path);
+	// BBS specify filename after filedata
+	curl_mime_filename(part, name);
+}
+
+//FIXME may throw! Is the caller aware of it?
+void Http::priv::set_post_body(const fs::path &path)
+{
+	std::ifstream file(path.string());
+	std::string file_content { std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>() };
+	postfields = std::move(file_content);
+}
+
+void Http::priv::set_post_body(const std::string &body)
+{
+	postfields = body;
+}
+
+void Http::priv::set_put_body(const fs::path &path)
+{
+	boost::system::error_code ec;
+	boost::uintmax_t filesize = file_size(path, ec);
+	if (!ec) {
+		putFile = std::make_unique<fs::ifstream>(path, std::ios_base::binary |std::ios_base::in);
+		::curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
+		::curl_easy_setopt(curl, CURLOPT_READDATA, (void *) (putFile.get()));
+		::curl_easy_setopt(curl, CURLOPT_INFILESIZE, filesize);
+	}
+}
+
+void Http::priv::set_del_body(const std::string& body)
+{
+	postfields = body;
+}
+
+std::string Http::priv::curl_error(CURLcode curlcode)
+{
+	return (boost::format("curl:%1%:\n%2%\n[Error %3%]")
+		% ::curl_easy_strerror(curlcode)
+		% error_buffer.c_str()
+		% curlcode
+	).str();
+}
+
+std::string Http::priv::body_size_error()
+{
+	return (boost::format("HTTP body data size exceeded limit (%1% bytes)") % limit).str();
+}
+
+void Http::priv::http_perform()
+{
+	::curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+	::curl_easy_setopt(curl, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	::curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writecb);
+	::curl_easy_setopt(curl, CURLOPT_WRITEDATA, static_cast<void*>(this));
+	::curl_easy_setopt(curl, CURLOPT_READFUNCTION, form_file_read_cb);
+	//BBS set header functions
+	::curl_easy_setopt(curl, CURLOPT_HEADERDATA, static_cast<void *>(this));
+	::curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, headers_cb);
+
+	::curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
+#if LIBCURL_VERSION_MAJOR >= 7 && LIBCURL_VERSION_MINOR >= 32
+	::curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, xfercb);
+	::curl_easy_setopt(curl, CURLOPT_XFERINFODATA, static_cast<void*>(this));
+#ifndef _WIN32
+	(void)xfercb_legacy;   // prevent unused function warning
+#endif
+#else
+	::curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, xfercb);
+	::curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, static_cast<void*>(this));
+#endif
+
+	::curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+
+	if (headerlist != nullptr) {
+		::curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
+	}
+
+	if (form != nullptr) {
+		::curl_easy_setopt(curl, CURLOPT_HTTPPOST, form);
+	}
+
+	if (mime != nullptr) {
+		::curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime);
+	}
+
+	if (!postfields.empty()) {
+		::curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postfields.c_str());
+		::curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, postfields.size());
+	}
+
+	CURLcode res = ::curl_easy_perform(curl);
+
+    putFile.reset();
+
+	if (res != CURLE_OK) {
+		if (res == CURLE_ABORTED_BY_CALLBACK) {
+			if (cancel) {
+				// The abort comes from the request being cancelled programatically
+				Progress dummyprogress(0, 0, 0, 0);
+				bool cancel = true;
+				if (progressfn) { progressfn(dummyprogress, cancel); }
+			} else {
+				// The abort comes from the CURLOPT_READFUNCTION callback, which means reading file failed
+				if (errorfn) { errorfn(std::move(buffer), "Error reading file for file upload", 0); }
+			}
+		}
+		else if (res == CURLE_WRITE_ERROR) {
+			if (errorfn) { errorfn(std::move(buffer), body_size_error(), 0); }
+		} else {
+			if (errorfn) { errorfn(std::move(buffer), curl_error(res), 0); }
+		};
+	} else {
+		long http_status = 0;
+		::curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_status);
+
+		//BBS check success http status code
+		if (http_status >= 200 && http_status < 300) {
+			if (completefn) { completefn(std::move(buffer), http_status); }
+			if (ipresolvefn) {
+				char* ct;
+				res = curl_easy_getinfo(curl, CURLINFO_PRIMARY_IP, &ct);
+				if ((CURLE_OK == res) && ct) {
+					ipresolvefn(ct);
+				}
+			}
+		}
+		//BBS check error http status code
+		else if (http_status >= 400) {
+			if (errorfn) { errorfn(std::move(buffer), std::string(), http_status); }
+		}
+	}
+}
+
+Http::Http(const std::string &url) : p(new priv(url))
+{
+	;
+}
+
+
+// Public
+
+Http::Http(Http &&other) : p(std::move(other.p)) {}
+
+Http::~Http()
+{
+    assert(! p || ! p->putFile);
+	if (p && p->io_thread.joinable()) {
+		p->io_thread.detach();
+	}
+}
+
+
+Http& Http::timeout_connect(long timeout)
+{
+	if (timeout < 1) { timeout = priv::DEFAULT_TIMEOUT_CONNECT; }
+	if (p) { p->set_timeout_connect(timeout); }
+	return *this;
+}
+
+Http& Http::timeout_max(long timeout)
+{
+    if (timeout < 1) { timeout = priv::DEFAULT_TIMEOUT_MAX; }
+    if (p) { p->set_timeout_max(timeout); }
+    return *this;
+}
+
+Http& Http::size_limit(size_t sizeLimit)
+{
+	if (p) { p->limit = sizeLimit; }
+	return *this;
+}
+
+Http& Http::header(std::string name, const std::string &value)
+{
+	if (!p) { return * this; }
+
+	if (name.size() > 0) {
+		name.append(": ").append(value);
+	} else {
+		name.push_back(':');
+	}
+	p->headerlist = curl_slist_append(p->headerlist, name.c_str());
+	return *this;
+}
+
+Http& Http::remove_header(std::string name)
+{
+	if (p) {
+		name.push_back(':');
+		p->headerlist = curl_slist_append(p->headerlist, name.c_str());
+	}
+
+	return *this;
+}
+
+// Authorization by HTTP digest, based on RFC2617.
+Http& Http::auth_digest(const std::string &user, const std::string &password)
+{
+	curl_easy_setopt(p->curl, CURLOPT_USERNAME, user.c_str());
+	curl_easy_setopt(p->curl, CURLOPT_PASSWORD, password.c_str());
+	curl_easy_setopt(p->curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
+
+	return *this;
+}
+
+Http& Http::auth_basic(const std::string &user, const std::string &password)
+{
+    curl_easy_setopt(p->curl, CURLOPT_USERNAME, user.c_str());
+    curl_easy_setopt(p->curl, CURLOPT_PASSWORD, password.c_str());
+    curl_easy_setopt(p->curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
+
+    return *this;
+}
+
+Http& Http::ca_file(const std::string &name)
+{
+	if (p && priv::ca_file_supported(p->curl)) {
+		::curl_easy_setopt(p->curl, CURLOPT_CAINFO, name.c_str());
+	}
+
+	return *this;
+}
+
+
+Http& Http::form_add(const std::string &name, const std::string &contents)
+{
+	if (p) {
+		::curl_formadd(&p->form, &p->form_end,
+			CURLFORM_COPYNAME, name.c_str(),
+			CURLFORM_COPYCONTENTS, contents.c_str(),
+			CURLFORM_END
+		);
+	}
+
+	return *this;
+}
+
+Http& Http::form_add_file(const std::string &name, const fs::path &path)
+{
+	if (p) { p->form_add_file(name.c_str(), path.c_str(), nullptr); }
+	return *this;
+}
+
+
+Http& Http::mime_form_add_text(std::string &name, std::string &value)
+{
+	if (p) { p->mime_form_add_text(name.c_str(), value.c_str()); }
+	return *this;
+}
+
+Http& Http::mime_form_add_file(std::string &name, const char* path)
+{
+	if (p) { p->mime_form_add_file(name.c_str(), path); }
+	return *this;
+}
+
+
+Http& Http::form_add_file(const std::wstring& name, const fs::path& path)
+{
+	if (p) { p->form_add_file((char*)name.c_str(), path.c_str(), nullptr); }
+	return *this;
+}
+
+Http& Http::form_add_file(const std::string &name, const fs::path &path, const std::string &filename)
+{
+	if (p) { p->form_add_file(name.c_str(), path.c_str(), filename.c_str()); }
+	return *this;
+}
+
+#ifdef WIN32
+// Tells libcurl to ignore certificate revocation checks in case of missing or offline distribution points for those SSL backends where such behavior is present. 
+// This option is only supported for Schannel (the native Windows SSL library).
+Http& Http::ssl_revoke_best_effort(bool set)
+{
+	// BBS
+#if 0
+	if(p && set){
+		::curl_easy_setopt(p->curl, CURLOPT_SSL_OPTIONS, CURLSSLOPT_REVOKE_BEST_EFFORT);
+	}
+#endif
+	return *this;
+}
+#endif // WIN32
+
+Http& Http::set_post_body(const fs::path &path)
+{
+	if (p) { p->set_post_body(path);}
+	return *this;
+}
+
+Http& Http::set_post_body(const std::string &body)
+{
+	if (p) { p->set_post_body(body); }
+	return *this;
+}
+
+Http& Http::set_put_body(const fs::path &path)
+{
+	if (p) { p->set_put_body(path);}
+	return *this;
+}
+
+Http& Http::set_del_body(const std::string &body)
+{
+	if (p) { p->set_del_body(body); }
+	return *this;
+}
+
+Http& Http::on_complete(CompleteFn fn)
+{
+	if (p) { p->completefn = std::move(fn); }
+	return *this;
+}
+
+Http& Http::on_error(ErrorFn fn)
+{
+	if (p) { p->errorfn = std::move(fn); }
+	return *this;
+}
+
+Http& Http::on_progress(ProgressFn fn)
+{
+	if (p) { p->progressfn = std::move(fn); }
+	return *this;
+}
+
+Http& Http::on_ip_resolve(IPResolveFn fn)
+{
+	if (p) { p->ipresolvefn = std::move(fn); }
+	return *this;
+}
+
+Http &Http::on_header_callback(HeaderCallbackFn fn)
+{
+	if (p) { p->headerfn = std::move(fn); }
+	return *this;
+}
+
+Http::Ptr Http::perform()
+{
+	auto self = std::make_shared<Http>(std::move(*this));
+
+	if (self->p) {
+		auto io_thread = std::thread([self](){
+				self->p->http_perform();
+			});
+		self->p->io_thread = std::move(io_thread);
+	}
+
+	return self;
+}
+
+void Http::perform_sync()
+{
+	if (p) { p->http_perform(); }
+}
+
+void Http::cancel()
+{
+	if (p) { p->cancel = true; }
+}
+
+Http Http::get(std::string url)
+{
+    return Http{std::move(url)};
+}
+
+Http Http::post(std::string url)
+{
+	Http http{std::move(url)};
+	curl_easy_setopt(http.p->curl, CURLOPT_POST, 1L);
+	return http;
+}
+
+Http Http::put(std::string url)
+{
+	Http http{std::move(url)};
+	curl_easy_setopt(http.p->curl, CURLOPT_UPLOAD, 1L);
+	return http;
+}
+
+Http Http::put2(std::string url)
+{
+	Http http{ std::move(url) };
+	curl_easy_setopt(http.p->curl, CURLOPT_CUSTOMREQUEST, "PUT");
+	return http;
+}
+
+Http Http::patch(std::string url)
+{
+	Http http{ std::move(url) };
+	curl_easy_setopt(http.p->curl, CURLOPT_CUSTOMREQUEST, "PATCH");
+	return http;
+}
+
+Http Http::del(std::string url)
+{
+	Http http{ std::move(url) };
+	curl_easy_setopt(http.p->curl, CURLOPT_CUSTOMREQUEST, "DELETE");
+	return http;
+}
+
+bool Http::ca_file_supported()
+{
+	::CURL *curl = ::curl_easy_init();
+	bool res = priv::ca_file_supported(curl);
+	if (curl != nullptr) { ::curl_easy_cleanup(curl); }
+    return res;
+}
+
+std::string Http::tls_global_init()
+{
+    if (!CurlGlobalInit::instance)
+        CurlGlobalInit::instance = std::make_unique<CurlGlobalInit>();
+
+    return CurlGlobalInit::instance->message;
+}
+
+std::string Http::tls_system_cert_store()
+{
+    std::string ret;
+
+#ifdef OPENSSL_CERT_OVERRIDE
+    ret = ::getenv(X509_get_default_cert_file_env());
+#endif
+
+    return ret;
+}
+
+std::string Http::url_encode(const std::string &str)
+{
+	::CURL *curl = ::curl_easy_init();
+	if (curl == nullptr) {
+		return str;
+	}
+	char *ce = ::curl_easy_escape(curl, str.c_str(), str.length());
+	std::string encoded = std::string(ce);
+
+	::curl_free(ce);
+	::curl_easy_cleanup(curl);
+
+	return encoded;
+}
+
+std::string Http::url_decode(const std::string &str)
+{
+    ::CURL *curl = ::curl_easy_init();
+    if (curl == nullptr) { return str; }
+    int outlen = 0;
+    char *ce = ::curl_easy_unescape(curl, str.c_str(), str.length(), &outlen);
+    std::string dencoded = std::string(ce, outlen);
+
+    ::curl_free(ce);
+    ::curl_easy_cleanup(curl);
+
+    return dencoded;
+}
+
+std::string Http::get_filename_from_url(const std::string &url)
+{
+    int end_pos = url.find_first_of('?');
+	if (end_pos <= 0) return "";
+	std::string path_url = url.substr(0, end_pos);
+	int start_pos = path_url.find_last_of("/");
+	if (start_pos < 0) return "";
+	return path_url.substr(start_pos + 1, path_url.length() - start_pos - 1);
+}
+
+std::ostream& operator<<(std::ostream &os, const Http::Progress &progress)
+{
+	os << "Http::Progress("
+		<< "dltotal = " << progress.dltotal
+		<< ", dlnow = " << progress.dlnow
+		<< ", ultotal = " << progress.ultotal
+		<< ", ulnow = " << progress.ulnow
+		<< ")";
+	return os;
+}
+
+
+}