730b772b41
Move SetPassword and SetUser implementations to wxProtocol to avoid code redundancy Make const-correct various getters Reorganize wxFTP docs Move wxStringToStringHashMap to hashmap.h and document its existance git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58137 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
439 lines
11 KiB
C++
439 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/http.cpp
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// Purpose: HTTP protocol
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// Author: Guilhem Lavaux
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// Modified by: Simo Virokannas (authentication, Dec 2005)
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// Created: August 1997
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// RCS-ID: $Id$
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// Copyright: (c) 1997, 1998 Guilhem Lavaux
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_PROTOCOL_HTTP
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef WX_PRECOMP
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#include "wx/string.h"
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#include "wx/app.h"
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#endif
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#include "wx/tokenzr.h"
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#include "wx/socket.h"
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#include "wx/protocol/protocol.h"
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#include "wx/url.h"
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#include "wx/protocol/http.h"
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#include "wx/sckstrm.h"
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#include "wx/thread.h"
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// ----------------------------------------------------------------------------
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// wxHTTP
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// ----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxHTTP, wxProtocol)
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IMPLEMENT_PROTOCOL(wxHTTP, wxT("http"), wxT("80"), true)
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wxHTTP::wxHTTP()
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: wxProtocol()
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{
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m_addr = NULL;
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m_read = false;
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m_proxy_mode = false;
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m_post_buf = wxEmptyString;
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m_http_response = 0;
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SetNotify(wxSOCKET_LOST_FLAG);
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}
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wxHTTP::~wxHTTP()
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{
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ClearHeaders();
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delete m_addr;
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}
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void wxHTTP::ClearHeaders()
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{
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m_headers.clear();
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}
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wxString wxHTTP::GetContentType() const
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{
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return GetHeader(wxT("Content-Type"));
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}
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void wxHTTP::SetProxyMode(bool on)
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{
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m_proxy_mode = on;
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}
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wxHTTP::wxHeaderIterator wxHTTP::FindHeader(const wxString& header)
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{
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wxHeaderIterator it = m_headers.begin();
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for ( wxHeaderIterator en = m_headers.end(); it != en; ++it )
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{
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if ( header.CmpNoCase(it->first) == 0 )
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break;
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}
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return it;
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}
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wxHTTP::wxHeaderConstIterator wxHTTP::FindHeader(const wxString& header) const
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{
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wxHeaderConstIterator it = m_headers.begin();
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for ( wxHeaderConstIterator en = m_headers.end(); it != en; ++it )
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{
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if ( header.CmpNoCase(it->first) == 0 )
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break;
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}
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return it;
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}
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void wxHTTP::SetHeader(const wxString& header, const wxString& h_data)
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{
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if (m_read) {
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ClearHeaders();
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m_read = false;
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}
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wxHeaderIterator it = FindHeader(header);
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if (it != m_headers.end())
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it->second = h_data;
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else
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m_headers[header] = h_data;
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}
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wxString wxHTTP::GetHeader(const wxString& header) const
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{
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wxHeaderConstIterator it = FindHeader(header);
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return it == m_headers.end() ? wxGetEmptyString() : it->second;
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}
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wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass) const
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{
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static const char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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wxString buf;
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wxString toencode;
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buf.Printf(wxT("Basic "));
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toencode.Printf(wxT("%s:%s"),user.c_str(),pass.c_str());
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size_t len = toencode.length();
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const wxChar *from = toencode.c_str();
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while (len >= 3) { // encode full blocks first
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buf << wxString::Format(wxT("%c%c"), base64[(from[0] >> 2) & 0x3f], base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)]);
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buf << wxString::Format(wxT("%c%c"), base64[((from[1] << 2) & 0x3c) | ((from[2] >> 6) & 0x3)], base64[from[2] & 0x3f]);
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from += 3;
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len -= 3;
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}
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if (len > 0) { // pad the remaining characters
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buf << wxString::Format(wxT("%c"), base64[(from[0] >> 2) & 0x3f]);
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if (len == 1) {
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buf << wxString::Format(wxT("%c="), base64[(from[0] << 4) & 0x30]);
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} else {
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buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
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}
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buf << wxT("=");
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}
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return buf;
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}
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void wxHTTP::SetPostBuffer(const wxString& post_buf)
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{
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m_post_buf = post_buf;
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}
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void wxHTTP::SendHeaders()
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{
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typedef wxStringToStringHashMap::iterator iterator;
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wxString buf;
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for (iterator it = m_headers.begin(), en = m_headers.end(); it != en; ++it )
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{
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buf.Printf(wxT("%s: %s\r\n"), it->first.c_str(), it->second.c_str());
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const wxWX2MBbuf cbuf = buf.mb_str();
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Write(cbuf, strlen(cbuf));
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}
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}
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bool wxHTTP::ParseHeaders()
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{
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wxString line;
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wxStringTokenizer tokenzr;
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ClearHeaders();
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m_read = true;
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for ( ;; )
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{
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m_lastError = ReadLine(this, line);
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if (m_lastError != wxPROTO_NOERR)
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return false;
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if (line.length() == 0)
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break;
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wxString left_str = line.BeforeFirst(':');
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m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
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}
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return true;
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}
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bool wxHTTP::Connect(const wxString& host, unsigned short port)
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{
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wxIPV4address *addr;
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if (m_addr) {
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delete m_addr;
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m_addr = NULL;
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Close();
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}
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m_addr = addr = new wxIPV4address();
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if (!addr->Hostname(host)) {
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delete m_addr;
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m_addr = NULL;
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m_lastError = wxPROTO_NETERR;
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return false;
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}
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if ( port )
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addr->Service(port);
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else if (!addr->Service(wxT("http")))
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addr->Service(80);
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SetHeader(wxT("Host"), host);
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m_lastError = wxPROTO_NOERR;
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return true;
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}
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bool wxHTTP::Connect(const wxSockAddress& addr, bool WXUNUSED(wait))
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{
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if (m_addr) {
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delete m_addr;
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Close();
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}
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m_addr = addr.Clone();
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wxIPV4address *ipv4addr = wxDynamicCast(&addr, wxIPV4address);
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if (ipv4addr)
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SetHeader(wxT("Host"), ipv4addr->OrigHostname());
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m_lastError = wxPROTO_NOERR;
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return true;
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}
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bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
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{
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const wxChar *request;
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switch (req)
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{
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case wxHTTP_GET:
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request = wxT("GET");
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break;
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case wxHTTP_POST:
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request = wxT("POST");
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if ( GetHeader( wxT("Content-Length") ).IsNull() )
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SetHeader( wxT("Content-Length"), wxString::Format( wxT("%lu"), (unsigned long)m_post_buf.Len() ) );
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break;
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default:
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return false;
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}
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m_http_response = 0;
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// If there is no User-Agent defined, define it.
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if (GetHeader(wxT("User-Agent")).IsNull())
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SetHeader(wxT("User-Agent"), wxT("wxWidgets 2.x"));
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// Send authentication information
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if (!m_username.empty() || !m_password.empty()) {
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SetHeader(wxT("Authorization"), GenerateAuthString(m_username, m_password));
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}
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SaveState();
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// we may use non blocking sockets only if we can dispatch events from them
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SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
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: wxSOCKET_BLOCK );
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Notify(false);
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wxString buf;
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buf.Printf(wxT("%s %s HTTP/1.0\r\n"), request, path.c_str());
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const wxWX2MBbuf pathbuf = buf.mb_str();
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Write(pathbuf, strlen(pathbuf));
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SendHeaders();
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Write("\r\n", 2);
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if ( req == wxHTTP_POST ) {
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Write(m_post_buf.mbc_str(), m_post_buf.Len());
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m_post_buf = wxEmptyString;
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}
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wxString tmp_str;
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m_lastError = ReadLine(this, tmp_str);
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if (m_lastError != wxPROTO_NOERR) {
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RestoreState();
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return false;
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}
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if (!tmp_str.Contains(wxT("HTTP/"))) {
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// TODO: support HTTP v0.9 which can have no header.
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// FIXME: tmp_str is not put back in the in-queue of the socket.
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m_lastError = wxPROTO_NOERR;
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SetHeader(wxT("Content-Length"), wxT("-1"));
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SetHeader(wxT("Content-Type"), wxT("none/none"));
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RestoreState();
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return true;
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}
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wxStringTokenizer token(tmp_str,wxT(' '));
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wxString tmp_str2;
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bool ret_value;
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token.NextToken();
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tmp_str2 = token.NextToken();
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m_http_response = wxAtoi(tmp_str2);
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switch ( tmp_str2[0u].GetValue() )
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{
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case wxT('1'):
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/* INFORMATION / SUCCESS */
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break;
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case wxT('2'):
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/* SUCCESS */
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break;
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case wxT('3'):
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/* REDIRECTION */
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break;
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default:
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m_lastError = wxPROTO_NOFILE;
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RestoreState();
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return false;
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}
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m_lastError = wxPROTO_NOERR;
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ret_value = ParseHeaders();
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RestoreState();
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return ret_value;
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}
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bool wxHTTP::Abort(void)
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{
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return wxSocketClient::Close();
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}
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// ----------------------------------------------------------------------------
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// wxHTTPStream and wxHTTP::GetInputStream
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// ----------------------------------------------------------------------------
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class wxHTTPStream : public wxSocketInputStream
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{
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public:
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wxHTTP *m_http;
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size_t m_httpsize;
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unsigned long m_read_bytes;
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wxHTTPStream(wxHTTP *http) : wxSocketInputStream(*http), m_http(http) {}
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size_t GetSize() const { return m_httpsize; }
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virtual ~wxHTTPStream(void) { m_http->Abort(); }
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protected:
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size_t OnSysRead(void *buffer, size_t bufsize);
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DECLARE_NO_COPY_CLASS(wxHTTPStream)
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};
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size_t wxHTTPStream::OnSysRead(void *buffer, size_t bufsize)
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{
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if (m_httpsize > 0 && m_read_bytes >= m_httpsize)
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{
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m_lasterror = wxSTREAM_EOF;
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return 0;
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}
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size_t ret = wxSocketInputStream::OnSysRead(buffer, bufsize);
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m_read_bytes += ret;
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if (m_httpsize==(size_t)-1 && m_lasterror == wxSTREAM_READ_ERROR )
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{
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// if m_httpsize is (size_t) -1 this means read until connection closed
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// which is equivalent to getting a READ_ERROR, for clients however this
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// must be translated into EOF, as it is the expected way of signalling
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// end end of the content
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m_lasterror = wxSTREAM_EOF;
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}
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return ret;
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}
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wxInputStream *wxHTTP::GetInputStream(const wxString& path)
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{
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wxHTTPStream *inp_stream;
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wxString new_path;
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m_lastError = wxPROTO_CONNERR; // all following returns share this type of error
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if (!m_addr)
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return NULL;
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// We set m_connected back to false so wxSocketBase will know what to do.
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#ifdef __WXMAC__
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wxSocketClient::Connect(*m_addr , false );
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wxSocketClient::WaitOnConnect(10);
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if (!wxSocketClient::IsConnected())
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return NULL;
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#else
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if (!wxProtocol::Connect(*m_addr))
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return NULL;
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#endif
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if (!BuildRequest(path, m_post_buf.empty() ? wxHTTP_GET : wxHTTP_POST))
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return NULL;
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inp_stream = new wxHTTPStream(this);
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if (!GetHeader(wxT("Content-Length")).empty())
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inp_stream->m_httpsize = wxAtoi(GetHeader(wxT("Content-Length")));
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else
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inp_stream->m_httpsize = (size_t)-1;
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inp_stream->m_read_bytes = 0;
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Notify(false);
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SetFlags(wxSOCKET_BLOCK | wxSOCKET_WAITALL);
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// no error; reset m_lastError
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m_lastError = wxPROTO_NOERR;
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return inp_stream;
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}
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#endif // wxUSE_PROTOCOL_HTTP
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