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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_HTTPCOMMON_H_
#define RTC_BASE_HTTPCOMMON_H_
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "rtc_base/checks.h"
#include "rtc_base/stream.h"
#include "rtc_base/stringutils.h"
namespace rtc {
class CryptString;
class SocketAddress;
//////////////////////////////////////////////////////////////////////
// Constants
//////////////////////////////////////////////////////////////////////
enum HttpCode {
HC_OK = 200,
HC_NON_AUTHORITATIVE = 203,
HC_NO_CONTENT = 204,
HC_PARTIAL_CONTENT = 206,
HC_MULTIPLE_CHOICES = 300,
HC_MOVED_PERMANENTLY = 301,
HC_FOUND = 302,
HC_SEE_OTHER = 303,
HC_NOT_MODIFIED = 304,
HC_MOVED_TEMPORARILY = 307,
HC_BAD_REQUEST = 400,
HC_UNAUTHORIZED = 401,
HC_FORBIDDEN = 403,
HC_NOT_FOUND = 404,
HC_PROXY_AUTHENTICATION_REQUIRED = 407,
HC_GONE = 410,
HC_INTERNAL_SERVER_ERROR = 500,
HC_NOT_IMPLEMENTED = 501,
HC_SERVICE_UNAVAILABLE = 503,
};
enum HttpVersion {
HVER_1_0, HVER_1_1, HVER_UNKNOWN,
HVER_LAST = HVER_UNKNOWN
};
enum HttpVerb {
HV_GET, HV_POST, HV_PUT, HV_DELETE, HV_CONNECT, HV_HEAD,
HV_LAST = HV_HEAD
};
enum HttpError {
HE_NONE,
HE_PROTOCOL, // Received non-valid HTTP data
HE_DISCONNECTED, // Connection closed unexpectedly
HE_OVERFLOW, // Received too much data for internal buffers
HE_CONNECT_FAILED, // The socket failed to connect.
HE_SOCKET_ERROR, // An error occurred on a connected socket
HE_SHUTDOWN, // Http object is being destroyed
HE_OPERATION_CANCELLED, // Connection aborted locally
HE_AUTH, // Proxy Authentication Required
HE_CERTIFICATE_EXPIRED, // During SSL negotiation
HE_STREAM, // Problem reading or writing to the document
HE_CACHE, // Problem reading from cache
HE_DEFAULT
};
enum HttpHeader {
HH_AGE,
HH_CACHE_CONTROL,
HH_CONNECTION,
HH_CONTENT_DISPOSITION,
HH_CONTENT_LENGTH,
HH_CONTENT_RANGE,
HH_CONTENT_TYPE,
HH_COOKIE,
HH_DATE,
HH_ETAG,
HH_EXPIRES,
HH_HOST,
HH_IF_MODIFIED_SINCE,
HH_IF_NONE_MATCH,
HH_KEEP_ALIVE,
HH_LAST_MODIFIED,
HH_LOCATION,
HH_PROXY_AUTHENTICATE,
HH_PROXY_AUTHORIZATION,
HH_PROXY_CONNECTION,
HH_RANGE,
HH_SET_COOKIE,
HH_TE,
HH_TRAILERS,
HH_TRANSFER_ENCODING,
HH_UPGRADE,
HH_USER_AGENT,
HH_WWW_AUTHENTICATE,
HH_LAST = HH_WWW_AUTHENTICATE
};
const uint16_t HTTP_DEFAULT_PORT = 80;
const uint16_t HTTP_SECURE_PORT = 443;
//////////////////////////////////////////////////////////////////////
// Utility Functions
//////////////////////////////////////////////////////////////////////
inline HttpError mkerr(HttpError err, HttpError def_err = HE_DEFAULT) {
return (err != HE_NONE) ? err : def_err;
}
const char* ToString(HttpVersion version);
bool FromString(HttpVersion& version, const std::string& str);
const char* ToString(HttpVerb verb);
bool FromString(HttpVerb& verb, const std::string& str);
const char* ToString(HttpHeader header);
bool FromString(HttpHeader& header, const std::string& str);
inline bool HttpCodeIsInformational(uint32_t code) {
return ((code / 100) == 1);
}
inline bool HttpCodeIsSuccessful(uint32_t code) {
return ((code / 100) == 2);
}
inline bool HttpCodeIsRedirection(uint32_t code) {
return ((code / 100) == 3);
}
inline bool HttpCodeIsClientError(uint32_t code) {
return ((code / 100) == 4);
}
inline bool HttpCodeIsServerError(uint32_t code) {
return ((code / 100) == 5);
}
bool HttpCodeHasBody(uint32_t code);
bool HttpCodeIsCacheable(uint32_t code);
bool HttpHeaderIsEndToEnd(HttpHeader header);
bool HttpHeaderIsCollapsible(HttpHeader header);
struct HttpData;
bool HttpShouldKeepAlive(const HttpData& data);
typedef std::pair<std::string, std::string> HttpAttribute;
typedef std::vector<HttpAttribute> HttpAttributeList;
void HttpParseAttributes(const char * data, size_t len,
HttpAttributeList& attributes);
bool HttpHasAttribute(const HttpAttributeList& attributes,
const std::string& name,
std::string* value);
bool HttpHasNthAttribute(HttpAttributeList& attributes,
size_t index,
std::string* name,
std::string* value);
// Convert RFC1123 date (DoW, DD Mon YYYY HH:MM:SS TZ) to unix timestamp
bool HttpDateToSeconds(const std::string& date, time_t* seconds);
inline uint16_t HttpDefaultPort(bool secure) {
return secure ? HTTP_SECURE_PORT : HTTP_DEFAULT_PORT;
}
// Returns the http server notation for a given address
std::string HttpAddress(const SocketAddress& address, bool secure);
// functional for insensitive std::string compare
struct iless {
bool operator()(const std::string& lhs, const std::string& rhs) const {
return (::_stricmp(lhs.c_str(), rhs.c_str()) < 0);
}
};
// put quotes around a string and escape any quotes inside it
std::string quote(const std::string& str);
//////////////////////////////////////////////////////////////////////
// Url
//////////////////////////////////////////////////////////////////////
template<class CTYPE>
class Url {
public:
typedef typename Traits<CTYPE>::string string;
// TODO: Implement Encode/Decode
static int Encode(const CTYPE* source, CTYPE* destination, size_t len);
static int Encode(const string& source, string& destination);
static int Decode(const CTYPE* source, CTYPE* destination, size_t len);
static int Decode(const string& source, string& destination);
Url(const string& url) { do_set_url(url.c_str(), url.size()); }
Url(const string& path, const string& host, uint16_t port = HTTP_DEFAULT_PORT)
: host_(host), port_(port), secure_(HTTP_SECURE_PORT == port) {
set_full_path(path);
}
bool valid() const { return !host_.empty(); }
void clear() {
host_.clear();
port_ = HTTP_DEFAULT_PORT;
secure_ = false;
path_.assign(1, static_cast<CTYPE>('/'));
query_.clear();
}
void set_url(const string& val) {
do_set_url(val.c_str(), val.size());
}
string url() const {
string val; do_get_url(&val); return val;
}
void set_address(const string& val) {
do_set_address(val.c_str(), val.size());
}
string address() const {
string val; do_get_address(&val); return val;
}
void set_full_path(const string& val) {
do_set_full_path(val.c_str(), val.size());
}
string full_path() const {
string val; do_get_full_path(&val); return val;
}
void set_host(const string& val) { host_ = val; }
const string& host() const { return host_; }
void set_port(uint16_t val) { port_ = val; }
uint16_t port() const { return port_; }
void set_secure(bool val) { secure_ = val; }
bool secure() const { return secure_; }
void set_path(const string& val) {
if (val.empty()) {
path_.assign(1, static_cast<CTYPE>('/'));
} else {
RTC_DCHECK(val[0] == static_cast<CTYPE>('/'));
path_ = val;
}
}
const string& path() const { return path_; }
void set_query(const string& val) {
RTC_DCHECK(val.empty() || (val[0] == static_cast<CTYPE>('?')));
query_ = val;
}
const string& query() const { return query_; }
bool get_attribute(const string& name, string* value) const;
private:
void do_set_url(const CTYPE* val, size_t len);
void do_set_address(const CTYPE* val, size_t len);
void do_set_full_path(const CTYPE* val, size_t len);
void do_get_url(string* val) const;
void do_get_address(string* val) const;
void do_get_full_path(string* val) const;
string host_, path_, query_;
uint16_t port_;
bool secure_;
};
//////////////////////////////////////////////////////////////////////
// HttpData
//////////////////////////////////////////////////////////////////////
struct HttpData {
typedef std::multimap<std::string, std::string, iless> HeaderMap;
typedef HeaderMap::const_iterator const_iterator;
typedef HeaderMap::iterator iterator;
HttpVersion version;
std::unique_ptr<StreamInterface> document;
HttpData();
enum HeaderCombine { HC_YES, HC_NO, HC_AUTO, HC_REPLACE, HC_NEW };
void changeHeader(const std::string& name, const std::string& value,
HeaderCombine combine);
inline void addHeader(const std::string& name, const std::string& value,
bool append = true) {
changeHeader(name, value, append ? HC_AUTO : HC_NO);
}
inline void setHeader(const std::string& name, const std::string& value,
bool overwrite = true) {
changeHeader(name, value, overwrite ? HC_REPLACE : HC_NEW);
}
// Returns count of erased headers
size_t clearHeader(const std::string& name);
// Returns iterator to next header
iterator clearHeader(iterator header);
// keep in mind, this may not do what you want in the face of multiple headers
bool hasHeader(const std::string& name, std::string* value) const;
inline const_iterator begin() const {
return headers_.begin();
}
inline const_iterator end() const {
return headers_.end();
}
inline iterator begin() {
return headers_.begin();
}
inline iterator end() {
return headers_.end();
}
inline const_iterator begin(const std::string& name) const {
return headers_.lower_bound(name);
}
inline const_iterator end(const std::string& name) const {
return headers_.upper_bound(name);
}
inline iterator begin(const std::string& name) {
return headers_.lower_bound(name);
}
inline iterator end(const std::string& name) {
return headers_.upper_bound(name);
}
// Convenience methods using HttpHeader
inline void changeHeader(HttpHeader header, const std::string& value,
HeaderCombine combine) {
changeHeader(ToString(header), value, combine);
}
inline void addHeader(HttpHeader header, const std::string& value,
bool append = true) {
addHeader(ToString(header), value, append);
}
inline void setHeader(HttpHeader header, const std::string& value,
bool overwrite = true) {
setHeader(ToString(header), value, overwrite);
}
inline void clearHeader(HttpHeader header) {
clearHeader(ToString(header));
}
inline bool hasHeader(HttpHeader header, std::string* value) const {
return hasHeader(ToString(header), value);
}
inline const_iterator begin(HttpHeader header) const {
return headers_.lower_bound(ToString(header));
}
inline const_iterator end(HttpHeader header) const {
return headers_.upper_bound(ToString(header));
}
inline iterator begin(HttpHeader header) {
return headers_.lower_bound(ToString(header));
}
inline iterator end(HttpHeader header) {
return headers_.upper_bound(ToString(header));
}
void setContent(const std::string& content_type, StreamInterface* document);
void setDocumentAndLength(StreamInterface* document);
virtual size_t formatLeader(char* buffer, size_t size) const = 0;
virtual HttpError parseLeader(const char* line, size_t len) = 0;
protected:
virtual ~HttpData();
void clear(bool release_document);
void copy(const HttpData& src);
private:
HeaderMap headers_;
};
struct HttpRequestData : public HttpData {
HttpVerb verb;
std::string path;
HttpRequestData() : verb(HV_GET) { }
void clear(bool release_document);
void copy(const HttpRequestData& src);
size_t formatLeader(char* buffer, size_t size) const override;
HttpError parseLeader(const char* line, size_t len) override;
bool getAbsoluteUri(std::string* uri) const;
bool getRelativeUri(std::string* host, std::string* path) const;
};
struct HttpResponseData : public HttpData {
uint32_t scode;
std::string message;
HttpResponseData() : scode(HC_INTERNAL_SERVER_ERROR) { }
void clear(bool release_document);
void copy(const HttpResponseData& src);
// Convenience methods
void set_success(uint32_t scode = HC_OK);
void set_success(const std::string& content_type,
StreamInterface* document,
uint32_t scode = HC_OK);
void set_redirect(const std::string& location,
uint32_t scode = HC_MOVED_TEMPORARILY);
void set_error(uint32_t scode);
size_t formatLeader(char* buffer, size_t size) const override;
HttpError parseLeader(const char* line, size_t len) override;
};
struct HttpTransaction {
HttpRequestData request;
HttpResponseData response;
};
//////////////////////////////////////////////////////////////////////
// Http Authentication
//////////////////////////////////////////////////////////////////////
struct HttpAuthContext {
std::string auth_method;
HttpAuthContext(const std::string& auth) : auth_method(auth) { }
virtual ~HttpAuthContext() { }
};
enum HttpAuthResult { HAR_RESPONSE, HAR_IGNORE, HAR_CREDENTIALS, HAR_ERROR };
// 'context' is used by this function to record information between calls.
// Start by passing a null pointer, then pass the same pointer each additional
// call. When the authentication attempt is finished, delete the context.
// TODO(bugs.webrtc.org/8905): Change "response" to "ZeroOnFreeBuffer".
HttpAuthResult HttpAuthenticate(
const char * challenge, size_t len,
const SocketAddress& server,
const std::string& method, const std::string& uri,
const std::string& username, const CryptString& password,
HttpAuthContext *& context, std::string& response, std::string& auth_method);
//////////////////////////////////////////////////////////////////////
} // namespace rtc
#endif // RTC_BASE_HTTPCOMMON_H_