src/common/http.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/common/http.cpp
// Purpose:     HTTP protocol
// Author:      Guilhem Lavaux
// Modified by: Simo Virokannas (authentication, Dec 2005)
// Created:     August 1997
// RCS-ID:      $Id$
// Copyright:   (c) 1997, 1998 Guilhem Lavaux
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_PROTOCOL_HTTP

#include <stdio.h>
#include <stdlib.h>

#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/app.h"
#endif

#include "wx/tokenzr.h"
#include "wx/socket.h"
#include "wx/protocol/protocol.h"
#include "wx/url.h"
#include "wx/protocol/http.h"
#include "wx/sckstrm.h"
#include "wx/thread.h"


// ----------------------------------------------------------------------------
// wxHTTP
// ----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxHTTP, wxProtocol)
IMPLEMENT_PROTOCOL(wxHTTP, wxT("http"), wxT("80"), true)

wxHTTP::wxHTTP()
  : wxProtocol()
{
    m_addr = NULL;
    m_read = false;
    m_proxy_mode = false;
    m_post_buf = wxEmptyString;
    m_http_response = 0;

    SetNotify(wxSOCKET_LOST_FLAG);
}

wxHTTP::~wxHTTP()
{
    ClearHeaders();

    delete m_addr;
}

void wxHTTP::ClearHeaders()
{
    m_headers.clear();
}

void wxHTTP::ClearCookies()
{
    m_cookies.clear();
}

wxString wxHTTP::GetContentType() const
{
    return GetHeader(wxT("Content-Type"));
}

void wxHTTP::SetProxyMode(bool on)
{
    m_proxy_mode = on;
}

wxHTTP::wxHeaderIterator wxHTTP::FindHeader(const wxString& header)
{
    wxHeaderIterator it = m_headers.begin();
    for ( wxHeaderIterator en = m_headers.end(); it != en; ++it )
    {
        if ( header.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

wxHTTP::wxHeaderConstIterator wxHTTP::FindHeader(const wxString& header) const
{
    wxHeaderConstIterator it = m_headers.begin();
    for ( wxHeaderConstIterator en = m_headers.end(); it != en; ++it )
    {
        if ( header.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

wxHTTP::wxCookieIterator wxHTTP::FindCookie(const wxString& cookie)
{
    wxCookieIterator it = m_cookies.begin();
    for ( wxCookieIterator en = m_cookies.end(); it != en; ++it )
    {
        if ( cookie.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

wxHTTP::wxCookieConstIterator wxHTTP::FindCookie(const wxString& cookie) const
{
    wxCookieConstIterator it = m_cookies.begin();
    for ( wxCookieConstIterator en = m_cookies.end(); it != en; ++it )
    {
        if ( cookie.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

void wxHTTP::SetHeader(const wxString& header, const wxString& h_data)
{
    if (m_read) {
        ClearHeaders();
        m_read = false;
    }

    wxHeaderIterator it = FindHeader(header);
    if (it != m_headers.end())
        it->second = h_data;
    else
        m_headers[header] = h_data;
}

wxString wxHTTP::GetHeader(const wxString& header) const
{
    wxHeaderConstIterator it = FindHeader(header);

    return it == m_headers.end() ? wxGetEmptyString() : it->second;
}

wxString wxHTTP::GetCookie(const wxString& cookie) const
{
    wxCookieConstIterator it = FindCookie(cookie);

    return it == m_cookies.end() ? wxGetEmptyString() : it->second;
}

wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass) const
{
    // TODO: Use wxBase64Encode() now that we have it instead of reproducing it

    static const char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    wxString buf;
    wxString toencode;

    buf.Printf(wxT("Basic "));

    toencode.Printf(wxT("%s:%s"),user.c_str(),pass.c_str());

    size_t len = toencode.length();
    const wxChar *from = toencode.c_str();
    while (len >= 3) { // encode full blocks first
        buf << wxString::Format(wxT("%c%c"), base64[(from[0] >> 2) & 0x3f], base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)]);
        buf << wxString::Format(wxT("%c%c"), base64[((from[1] << 2) & 0x3c) | ((from[2] >> 6) & 0x3)], base64[from[2] & 0x3f]);
        from += 3;
        len -= 3;
    }
    if (len > 0) { // pad the remaining characters
        buf << wxString::Format(wxT("%c"), base64[(from[0] >> 2) & 0x3f]);
        if (len == 1) {
            buf << wxString::Format(wxT("%c="), base64[(from[0] << 4) & 0x30]);
        } else {
            buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
        }
        buf << wxT("=");
    }

    return buf;
}

void wxHTTP::SetPostBuffer(const wxString& post_buf)
{
    m_post_buf = post_buf;
}

void wxHTTP::SendHeaders()
{
    typedef wxStringToStringHashMap::iterator iterator;
    wxString buf;

    for (iterator it = m_headers.begin(), en = m_headers.end(); it != en; ++it )
    {
        buf.Printf(wxT("%s: %s\r\n"), it->first.c_str(), it->second.c_str());

        const wxWX2MBbuf cbuf = buf.mb_str();
        Write(cbuf, strlen(cbuf));
    }
}

bool wxHTTP::ParseHeaders()
{
    wxString line;
    wxStringTokenizer tokenzr;

    ClearHeaders();
    ClearCookies();
    m_read = true;

    for ( ;; )
    {
        m_lastError = ReadLine(this, line);
        if (m_lastError != wxPROTO_NOERR)
            return false;

        if ( line.empty() )
            break;

        wxString left_str = line.BeforeFirst(':');
        if(!left_str.CmpNoCase("Set-Cookie"))
        {
            wxString cookieName = line.AfterFirst(':').Strip(wxString::both).BeforeFirst('=');
            wxString cookieValue = line.AfterFirst(':').Strip(wxString::both).AfterFirst('=').BeforeFirst(';');
            m_cookies[cookieName] = cookieValue;

            // For compatibility
            m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
        }
        else
        {
            m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
        }
    }
    return true;
}

bool wxHTTP::Connect(const wxString& host, unsigned short port)
{
    wxIPV4address *addr;

    if (m_addr) {
        wxDELETE(m_addr);
        Close();
    }

    m_addr = addr = new wxIPV4address();

    if (!addr->Hostname(host)) {
        wxDELETE(m_addr);
        m_lastError = wxPROTO_NETERR;
        return false;
    }

    if ( port )
        addr->Service(port);
    else if (!addr->Service(wxT("http")))
        addr->Service(80);

    wxString hostHdr = host;
    if ( port && port != 80 )
        hostHdr << wxT(":") << port;
    SetHeader(wxT("Host"), hostHdr);

    m_lastError = wxPROTO_NOERR;
    return true;
}

bool wxHTTP::Connect(const wxSockAddress& addr, bool WXUNUSED(wait))
{
    if (m_addr) {
        delete m_addr;
        Close();
    }

    m_addr = addr.Clone();

    wxIPV4address *ipv4addr = wxDynamicCast(&addr, wxIPV4address);
    if ( ipv4addr )
    {
        wxString hostHdr = ipv4addr->OrigHostname();
        unsigned short port = ipv4addr->Service();
        if ( port && port != 80 )
            hostHdr << wxT(":") << port;
        SetHeader(wxT("Host"), hostHdr);
    }

    m_lastError = wxPROTO_NOERR;
    return true;
}

bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
{
    const wxChar *request;

    switch (req)
    {
        case wxHTTP_GET:
            request = wxT("GET");
            break;

        case wxHTTP_POST:
            request = wxT("POST");
            if ( GetHeader( wxT("Content-Length") ).empty() )
                SetHeader( wxT("Content-Length"), wxString::Format( wxT("%lu"), (unsigned long)m_post_buf.Len() ) );
            break;

        default:
            return false;
    }

    m_http_response = 0;

    // If there is no User-Agent defined, define it.
    if ( GetHeader(wxT("User-Agent")).empty() )
        SetHeader(wxT("User-Agent"), wxT("wxWidgets 2.x"));

    // Send authentication information
    if (!m_username.empty() || !m_password.empty()) {
        SetHeader(wxT("Authorization"), GenerateAuthString(m_username, m_password));
    }

    SaveState();

    // we may use non blocking sockets only if we can dispatch events from them
    SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
                                                             : wxSOCKET_BLOCK );
    Notify(false);

    wxString buf;
    buf.Printf(wxT("%s %s HTTP/1.0\r\n"), request, path.c_str());
    const wxWX2MBbuf pathbuf = buf.mb_str();
    Write(pathbuf, strlen(pathbuf));
    SendHeaders();
    Write("\r\n", 2);

    if ( req == wxHTTP_POST ) {
        // Post data can be arbitrary binary data when the "binary" content
        // transfer encoding is used so don't assume it's ASCII only or
        // NUL-terminated.
        {
            const wxScopedCharBuffer buf(m_post_buf.To8BitData());
            Write(buf, buf.length());
        } // delete the buffer before modifying the string it points to, it
          // wouldn't really be a problem here even if we didn't do this
          // because we won't use this buffer again but this will avoid any
          // nasty surprises in the future if this code changes

        m_post_buf = wxEmptyString;
    }

    wxString tmp_str;
    m_lastError = ReadLine(this, tmp_str);
    if (m_lastError != wxPROTO_NOERR) {
        RestoreState();
        return false;
    }

    if (!tmp_str.Contains(wxT("HTTP/"))) {
        // TODO: support HTTP v0.9 which can have no header.
        // FIXME: tmp_str is not put back in the in-queue of the socket.
        m_lastError = wxPROTO_NOERR;
        SetHeader(wxT("Content-Length"), wxT("-1"));
        SetHeader(wxT("Content-Type"), wxT("none/none"));
        RestoreState();
        return true;
    }

    wxStringTokenizer token(tmp_str,wxT(' '));
    wxString tmp_str2;
    bool ret_value;

    token.NextToken();
    tmp_str2 = token.NextToken();

    m_http_response = wxAtoi(tmp_str2);

    switch ( tmp_str2[0u].GetValue() )
    {
        case wxT('1'):
            /* INFORMATION / SUCCESS */
            break;

        case wxT('2'):
            /* SUCCESS */
            break;

        case wxT('3'):
            /* REDIRECTION */
            break;

        default:
            m_lastError = wxPROTO_NOFILE;
            RestoreState();
            return false;
    }

    m_lastError = wxPROTO_NOERR;
    ret_value = ParseHeaders();
    RestoreState();
    return ret_value;
}

bool wxHTTP::Abort(void)
{
    return wxSocketClient::Close();
}

// ----------------------------------------------------------------------------
// wxHTTPStream and wxHTTP::GetInputStream
// ----------------------------------------------------------------------------

class wxHTTPStream : public wxSocketInputStream
{
public:
    wxHTTP *m_http;
    size_t m_httpsize;
    unsigned long m_read_bytes;

    wxHTTPStream(wxHTTP *http) : wxSocketInputStream(*http), m_http(http) {}
    size_t GetSize() const { return m_httpsize; }
    virtual ~wxHTTPStream(void) { m_http->Abort(); }

protected:
    size_t OnSysRead(void *buffer, size_t bufsize);

    wxDECLARE_NO_COPY_CLASS(wxHTTPStream);
};

size_t wxHTTPStream::OnSysRead(void *buffer, size_t bufsize)
{
    if (m_read_bytes >= m_httpsize)
    {
        m_lasterror = wxSTREAM_EOF;
        return 0;
    }

    size_t ret = wxSocketInputStream::OnSysRead(buffer, bufsize);
    m_read_bytes += ret;

    if (m_httpsize==(size_t)-1 && m_lasterror == wxSTREAM_READ_ERROR )
    {
        // if m_httpsize is (size_t) -1 this means read until connection closed
        // which is equivalent to getting a READ_ERROR, for clients however this
        // must be translated into EOF, as it is the expected way of signalling
        // end end of the content
        m_lasterror = wxSTREAM_EOF;
    }

    return ret;
}

wxInputStream *wxHTTP::GetInputStream(const wxString& path)
{
    wxHTTPStream *inp_stream;

    wxString new_path;

    m_lastError = wxPROTO_CONNERR;  // all following returns share this type of error
    if (!m_addr)
        return NULL;

    // We set m_connected back to false so wxSocketBase will know what to do.
#ifdef __WXMAC__
    wxSocketClient::Connect(*m_addr , false );
    wxSocketClient::WaitOnConnect(10);

    if (!wxSocketClient::IsConnected())
        return NULL;
#else
    if (!wxProtocol::Connect(*m_addr))
        return NULL;
#endif

    if (!BuildRequest(path, m_post_buf.empty() ? wxHTTP_GET : wxHTTP_POST))
        return NULL;

    inp_stream = new wxHTTPStream(this);

    if (!GetHeader(wxT("Content-Length")).empty())
        inp_stream->m_httpsize = wxAtoi(GetHeader(wxT("Content-Length")));
    else
        inp_stream->m_httpsize = (size_t)-1;

    inp_stream->m_read_bytes = 0;

    Notify(false);
    SetFlags(wxSOCKET_BLOCK | wxSOCKET_WAITALL);

    // no error; reset m_lastError
    m_lastError = wxPROTO_NOERR;
    return inp_stream;
}

#endif // wxUSE_PROTOCOL_HTTP
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/common/http.cpp
	3	// Purpose: HTTP protocol
	4	// Author: Guilhem Lavaux
	5	// Modified by: Simo Virokannas (authentication, Dec 2005)
	6	// Created: August 1997
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1997, 1998 Guilhem Lavaux
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// For compilers that support precompilation, includes "wx.h".
	13	#include "wx/wxprec.h"
	14
	15	#ifdef __BORLANDC__
	16	#pragma hdrstop
	17	#endif
	18
	19	#if wxUSE_PROTOCOL_HTTP
	20
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23
	24	#ifndef WX_PRECOMP
	25	#include "wx/string.h"
	26	#include "wx/app.h"
	27	#endif
	28
	29	#include "wx/tokenzr.h"
	30	#include "wx/socket.h"
	31	#include "wx/protocol/protocol.h"
	32	#include "wx/url.h"
	33	#include "wx/protocol/http.h"
	34	#include "wx/sckstrm.h"
	35	#include "wx/thread.h"
	36
	37
	38	// ----------------------------------------------------------------------------
	39	// wxHTTP
	40	// ----------------------------------------------------------------------------
	41
	42	IMPLEMENT_DYNAMIC_CLASS(wxHTTP, wxProtocol)
	43	IMPLEMENT_PROTOCOL(wxHTTP, wxT("http"), wxT("80"), true)
	44
	45	wxHTTP::wxHTTP()
	46	: wxProtocol()
	47	{
	48	m_addr = NULL;
	49	m_read = false;
	50	m_proxy_mode = false;
	51	m_post_buf = wxEmptyString;
	52	m_http_response = 0;
	53
	54	SetNotify(wxSOCKET_LOST_FLAG);
	55	}
	56
	57	wxHTTP::~wxHTTP()
	58	{
	59	ClearHeaders();
	60
	61	delete m_addr;
	62	}
	63
	64	void wxHTTP::ClearHeaders()
	65	{
	66	m_headers.clear();
	67	}
	68
	69	void wxHTTP::ClearCookies()
	70	{
	71	m_cookies.clear();
	72	}
	73
	74	wxString wxHTTP::GetContentType() const
	75	{
	76	return GetHeader(wxT("Content-Type"));
	77	}
	78
	79	void wxHTTP::SetProxyMode(bool on)
	80	{
	81	m_proxy_mode = on;
	82	}
	83
	84	wxHTTP::wxHeaderIterator wxHTTP::FindHeader(const wxString& header)
	85	{
	86	wxHeaderIterator it = m_headers.begin();
	87	for ( wxHeaderIterator en = m_headers.end(); it != en; ++it )
	88	{
	89	if ( header.CmpNoCase(it->first) == 0 )
	90	break;
	91	}
	92
	93	return it;
	94	}
	95
	96	wxHTTP::wxHeaderConstIterator wxHTTP::FindHeader(const wxString& header) const
	97	{
	98	wxHeaderConstIterator it = m_headers.begin();
	99	for ( wxHeaderConstIterator en = m_headers.end(); it != en; ++it )
	100	{
	101	if ( header.CmpNoCase(it->first) == 0 )
	102	break;
	103	}
	104
	105	return it;
	106	}
	107
	108	wxHTTP::wxCookieIterator wxHTTP::FindCookie(const wxString& cookie)
	109	{
	110	wxCookieIterator it = m_cookies.begin();
	111	for ( wxCookieIterator en = m_cookies.end(); it != en; ++it )
	112	{
	113	if ( cookie.CmpNoCase(it->first) == 0 )
	114	break;
	115	}
	116
	117	return it;
	118	}
	119
	120	wxHTTP::wxCookieConstIterator wxHTTP::FindCookie(const wxString& cookie) const
	121	{
	122	wxCookieConstIterator it = m_cookies.begin();
	123	for ( wxCookieConstIterator en = m_cookies.end(); it != en; ++it )
	124	{
	125	if ( cookie.CmpNoCase(it->first) == 0 )
	126	break;
	127	}
	128
	129	return it;
	130	}
	131
	132	void wxHTTP::SetHeader(const wxString& header, const wxString& h_data)
	133	{
	134	if (m_read) {
	135	ClearHeaders();
	136	m_read = false;
	137	}
	138
	139	wxHeaderIterator it = FindHeader(header);
	140	if (it != m_headers.end())
	141	it->second = h_data;
	142	else
	143	m_headers[header] = h_data;
	144	}
	145
	146	wxString wxHTTP::GetHeader(const wxString& header) const
	147	{
	148	wxHeaderConstIterator it = FindHeader(header);
	149
	150	return it == m_headers.end() ? wxGetEmptyString() : it->second;
	151	}
	152
	153	wxString wxHTTP::GetCookie(const wxString& cookie) const
	154	{
	155	wxCookieConstIterator it = FindCookie(cookie);
	156
	157	return it == m_cookies.end() ? wxGetEmptyString() : it->second;
	158	}
	159
	160	wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass) const
	161	{
	162	// TODO: Use wxBase64Encode() now that we have it instead of reproducing it
	163
	164	static const char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	165
	166	wxString buf;
	167	wxString toencode;
	168
	169	buf.Printf(wxT("Basic "));
	170
	171	toencode.Printf(wxT("%s:%s"),user.c_str(),pass.c_str());
	172
	173	size_t len = toencode.length();
	174	const wxChar *from = toencode.c_str();
	175	while (len >= 3) { // encode full blocks first
	176	buf << wxString::Format(wxT("%c%c"), base64[(from[0] >> 2) & 0x3f], base64[((from[0] << 4) & 0x30) \| ((from[1] >> 4) & 0xf)]);
	177	buf << wxString::Format(wxT("%c%c"), base64[((from[1] << 2) & 0x3c) \| ((from[2] >> 6) & 0x3)], base64[from[2] & 0x3f]);
	178	from += 3;
	179	len -= 3;
	180	}
	181	if (len > 0) { // pad the remaining characters
	182	buf << wxString::Format(wxT("%c"), base64[(from[0] >> 2) & 0x3f]);
	183	if (len == 1) {
	184	buf << wxString::Format(wxT("%c="), base64[(from[0] << 4) & 0x30]);
	185	} else {
	186	buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) \| ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
	187	}
	188	buf << wxT("=");
	189	}
	190
	191	return buf;
	192	}
	193
	194	void wxHTTP::SetPostBuffer(const wxString& post_buf)
	195	{
	196	m_post_buf = post_buf;
	197	}
	198
	199	void wxHTTP::SendHeaders()
	200	{
	201	typedef wxStringToStringHashMap::iterator iterator;
	202	wxString buf;
	203
	204	for (iterator it = m_headers.begin(), en = m_headers.end(); it != en; ++it )
	205	{
	206	buf.Printf(wxT("%s: %s\r\n"), it->first.c_str(), it->second.c_str());
	207
	208	const wxWX2MBbuf cbuf = buf.mb_str();
	209	Write(cbuf, strlen(cbuf));
	210	}
	211	}
	212
	213	bool wxHTTP::ParseHeaders()
	214	{
	215	wxString line;
	216	wxStringTokenizer tokenzr;
	217
	218	ClearHeaders();
	219	ClearCookies();
	220	m_read = true;
	221
	222	for ( ;; )
	223	{
	224	m_lastError = ReadLine(this, line);
	225	if (m_lastError != wxPROTO_NOERR)
	226	return false;
	227
	228	if ( line.empty() )
	229	break;
	230
	231	wxString left_str = line.BeforeFirst(':');
	232	if(!left_str.CmpNoCase("Set-Cookie"))
	233	{
	234	wxString cookieName = line.AfterFirst(':').Strip(wxString::both).BeforeFirst('=');
	235	wxString cookieValue = line.AfterFirst(':').Strip(wxString::both).AfterFirst('=').BeforeFirst(';');
	236	m_cookies[cookieName] = cookieValue;
	237
	238	// For compatibility
	239	m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
	240	}
	241	else
	242	{
	243	m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
	244	}
	245	}
	246	return true;
	247	}
	248
	249	bool wxHTTP::Connect(const wxString& host, unsigned short port)
	250	{
	251	wxIPV4address *addr;
	252
	253	if (m_addr) {
	254	wxDELETE(m_addr);
	255	Close();
	256	}
	257
	258	m_addr = addr = new wxIPV4address();
	259
	260	if (!addr->Hostname(host)) {
	261	wxDELETE(m_addr);
	262	m_lastError = wxPROTO_NETERR;
	263	return false;
	264	}
	265
	266	if ( port )
	267	addr->Service(port);
	268	else if (!addr->Service(wxT("http")))
	269	addr->Service(80);
	270
	271	wxString hostHdr = host;
	272	if ( port && port != 80 )
	273	hostHdr << wxT(":") << port;
	274	SetHeader(wxT("Host"), hostHdr);
	275
	276	m_lastError = wxPROTO_NOERR;
	277	return true;
	278	}
	279
	280	bool wxHTTP::Connect(const wxSockAddress& addr, bool WXUNUSED(wait))
	281	{
	282	if (m_addr) {
	283	delete m_addr;
	284	Close();
	285	}
	286
	287	m_addr = addr.Clone();
	288
	289	wxIPV4address *ipv4addr = wxDynamicCast(&addr, wxIPV4address);
	290	if ( ipv4addr )
	291	{
	292	wxString hostHdr = ipv4addr->OrigHostname();
	293	unsigned short port = ipv4addr->Service();
	294	if ( port && port != 80 )
	295	hostHdr << wxT(":") << port;
	296	SetHeader(wxT("Host"), hostHdr);
	297	}
	298
	299	m_lastError = wxPROTO_NOERR;
	300	return true;
	301	}
	302
	303	bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
	304	{
	305	const wxChar *request;
	306
	307	switch (req)
	308	{
	309	case wxHTTP_GET:
	310	request = wxT("GET");
	311	break;
	312
	313	case wxHTTP_POST:
	314	request = wxT("POST");
	315	if ( GetHeader( wxT("Content-Length") ).empty() )
	316	SetHeader( wxT("Content-Length"), wxString::Format( wxT("%lu"), (unsigned long)m_post_buf.Len() ) );
	317	break;
	318
	319	default:
	320	return false;
	321	}
	322
	323	m_http_response = 0;
	324
	325	// If there is no User-Agent defined, define it.
	326	if ( GetHeader(wxT("User-Agent")).empty() )
	327	SetHeader(wxT("User-Agent"), wxT("wxWidgets 2.x"));
	328
	329	// Send authentication information
	330	if (!m_username.empty() \|\| !m_password.empty()) {
	331	SetHeader(wxT("Authorization"), GenerateAuthString(m_username, m_password));
	332	}
	333
	334	SaveState();
	335
	336	// we may use non blocking sockets only if we can dispatch events from them
	337	SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
	338	: wxSOCKET_BLOCK );
	339	Notify(false);
	340
	341	wxString buf;
	342	buf.Printf(wxT("%s %s HTTP/1.0\r\n"), request, path.c_str());
	343	const wxWX2MBbuf pathbuf = buf.mb_str();
	344	Write(pathbuf, strlen(pathbuf));
	345	SendHeaders();
	346	Write("\r\n", 2);
	347
	348	if ( req == wxHTTP_POST ) {
	349	// Post data can be arbitrary binary data when the "binary" content
	350	// transfer encoding is used so don't assume it's ASCII only or
	351	// NUL-terminated.
	352	{
	353	const wxScopedCharBuffer buf(m_post_buf.To8BitData());
	354	Write(buf, buf.length());
	355	} // delete the buffer before modifying the string it points to, it
	356	// wouldn't really be a problem here even if we didn't do this
	357	// because we won't use this buffer again but this will avoid any
	358	// nasty surprises in the future if this code changes
	359
	360	m_post_buf = wxEmptyString;
	361	}
	362
	363	wxString tmp_str;
	364	m_lastError = ReadLine(this, tmp_str);
	365	if (m_lastError != wxPROTO_NOERR) {
	366	RestoreState();
	367	return false;
	368	}
	369
	370	if (!tmp_str.Contains(wxT("HTTP/"))) {
	371	// TODO: support HTTP v0.9 which can have no header.
	372	// FIXME: tmp_str is not put back in the in-queue of the socket.
	373	m_lastError = wxPROTO_NOERR;
	374	SetHeader(wxT("Content-Length"), wxT("-1"));
	375	SetHeader(wxT("Content-Type"), wxT("none/none"));
	376	RestoreState();
	377	return true;
	378	}
	379
	380	wxStringTokenizer token(tmp_str,wxT(' '));
	381	wxString tmp_str2;
	382	bool ret_value;
	383
	384	token.NextToken();
	385	tmp_str2 = token.NextToken();
	386
	387	m_http_response = wxAtoi(tmp_str2);
	388
	389	switch ( tmp_str2[0u].GetValue() )
	390	{
	391	case wxT('1'):
	392	/* INFORMATION / SUCCESS */
	393	break;
	394
	395	case wxT('2'):
	396	/* SUCCESS */
	397	break;
	398
	399	case wxT('3'):
	400	/* REDIRECTION */
	401	break;
	402
	403	default:
	404	m_lastError = wxPROTO_NOFILE;
	405	RestoreState();
	406	return false;
	407	}
	408
	409	m_lastError = wxPROTO_NOERR;
	410	ret_value = ParseHeaders();
	411	RestoreState();
	412	return ret_value;
	413	}
	414
	415	bool wxHTTP::Abort(void)
	416	{
	417	return wxSocketClient::Close();
	418	}
	419
	420	// ----------------------------------------------------------------------------
	421	// wxHTTPStream and wxHTTP::GetInputStream
	422	// ----------------------------------------------------------------------------
	423
	424	class wxHTTPStream : public wxSocketInputStream
	425	{
	426	public:
	427	wxHTTP *m_http;
	428	size_t m_httpsize;
	429	unsigned long m_read_bytes;
	430
	431	wxHTTPStream(wxHTTP http) : wxSocketInputStream(http), m_http(http) {}
	432	size_t GetSize() const { return m_httpsize; }
	433	virtual ~wxHTTPStream(void) { m_http->Abort(); }
	434
	435	protected:
	436	size_t OnSysRead(void *buffer, size_t bufsize);
	437
	438	wxDECLARE_NO_COPY_CLASS(wxHTTPStream);
	439	};
	440
	441	size_t wxHTTPStream::OnSysRead(void *buffer, size_t bufsize)
	442	{
	443	if (m_read_bytes >= m_httpsize)
	444	{
	445	m_lasterror = wxSTREAM_EOF;
	446	return 0;
	447	}
	448
	449	size_t ret = wxSocketInputStream::OnSysRead(buffer, bufsize);
	450	m_read_bytes += ret;
	451
	452	if (m_httpsize==(size_t)-1 && m_lasterror == wxSTREAM_READ_ERROR )
	453	{
	454	// if m_httpsize is (size_t) -1 this means read until connection closed
	455	// which is equivalent to getting a READ_ERROR, for clients however this
	456	// must be translated into EOF, as it is the expected way of signalling
	457	// end end of the content
	458	m_lasterror = wxSTREAM_EOF;
	459	}
	460
	461	return ret;
	462	}
	463
	464	wxInputStream *wxHTTP::GetInputStream(const wxString& path)
	465	{
	466	wxHTTPStream *inp_stream;
	467
	468	wxString new_path;
	469
	470	m_lastError = wxPROTO_CONNERR; // all following returns share this type of error
	471	if (!m_addr)
	472	return NULL;
	473
	474	// We set m_connected back to false so wxSocketBase will know what to do.
	475	#ifdef __WXMAC__
	476	wxSocketClient::Connect(*m_addr , false );
	477	wxSocketClient::WaitOnConnect(10);
	478
	479	if (!wxSocketClient::IsConnected())
	480	return NULL;
	481	#else
	482	if (!wxProtocol::Connect(*m_addr))
	483	return NULL;
	484	#endif
	485
	486	if (!BuildRequest(path, m_post_buf.empty() ? wxHTTP_GET : wxHTTP_POST))
	487	return NULL;
	488
	489	inp_stream = new wxHTTPStream(this);
	490
	491	if (!GetHeader(wxT("Content-Length")).empty())
	492	inp_stream->m_httpsize = wxAtoi(GetHeader(wxT("Content-Length")));
	493	else
	494	inp_stream->m_httpsize = (size_t)-1;
	495
	496	inp_stream->m_read_bytes = 0;
	497
	498	Notify(false);
	499	SetFlags(wxSOCKET_BLOCK \| wxSOCKET_WAITALL);
	500
	501	// no error; reset m_lastError
	502	m_lastError = wxPROTO_NOERR;
	503	return inp_stream;
	504	}
	505
	506	#endif // wxUSE_PROTOCOL_HTTP