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/**
* ======================== legal notice ======================
*
* File: HTTPResponse.cc
* Created: 4. Juli 2012, 06
* Author: <a href="mailto:geronimo013@gmx.de">Geronimo</a>
* Project: libnetworking: classes for tcp/ip sockets and http-protocol handling
*
* CMP - compound media player
*
* is a client/server mediaplayer intended to play any media from any workstation
* without the need to export or mount shares. cmps is an easy to use backend
* with a (ready to use) HTML-interface. Additionally the backend supports
* authentication via HTTP-digest authorization.
* cmpc is a client with vdr-like osd-menues.
*
* Copyright (c) 2012 Reinhard Mantey, some rights reserved!
* published under Creative Commons by-sa
* For details see http://creativecommons.org/licenses/by-sa/3.0/
*
* The cmp project's homepage is at http://projects.vdr-developer.org/projects/cmp
*
* --------------------------------------------------------------
*/
#include <HTTPResponse.h>
#include <Authorization.h>
#include <stddef.h>
#include <stdio.h>
#include <util.h>
static const char *serverID = NULL;
cHTTPResponse::cHTTPResponse(HTTPStatusCode Status)
: status(Status)
, content(512)
{
SetHeader("Server", serverID);
if (!(Status <= HTTP_OK /* || Status == HTTP_NoContent */ || Status == 304))
SetDefaultStatusBody(Status);
}
cHTTPResponse::cHTTPResponse(const char *Buffer)
{
ParseMessage(Buffer);
if (Authorization()) Authorization()->SetServerID(ServerID());
}
cHTTPResponse::~cHTTPResponse()
{
}
size_t cHTTPResponse::ContentSize() const
{
if (content.Size()) return content.Size();
return cHTTPMessage::ContentSize();
}
const char * cHTTPResponse::ServerID(void)
{
return serverID;
}
void cHTTPResponse::SetServerID(const char* ServerID)
{
serverID = ServerID;
}
void cHTTPResponse::SetDefaultStatusBody(HTTPStatusCode Status)
{
SetContentType(MT_Html);
content.Append("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
"\"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd\">\n"
"<HTML>\n"
" <HEAD>\n"
" <TITLE>Error ");
content.Append(Status).Append("</TITLE>\n"
" <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=ISO-8859-1\">\n"
" </HEAD>\n"
" <BODY><H1>");
content.Append(Status).Append(" ").Append(httpStatus2Text(Status)).Append(".</H1></BODY>\n"
"</HTML>\n");
}
void cHTTPResponse::HandleAbort(void)
///< handle cases where client closes connection while transfer was in progress
{
// default: do nothing
}
size_t cHTTPResponse::ReadContentChunk(char* Buf, size_t bufSize)
{
return content.Copy(Buf, bufSize);
}
size_t cHTTPResponse::WriteFirstLine(char* Buffer, size_t BufSize)
{
return snprintf(Buffer, BufSize, "%s %d %s\n", ProtocolString(), status, httpStatus2Text(status));
}
//static const char *SampleRawResponse =
//HTTP/1.1 401 Unauthorized
//Date: Tue, 29 May 2012 03:54:02 GMT
//Server: (null)
//Connection: Close
//WWW-Authenticate: Digest realm="validUsers@MyTestApp", nonce="dbe67572c707d25689a394ef7a9a9e8c", opaque="94c70a11bef0589719f190baf192bbcd", qop="auth"
//Content-Type: text/html
//Content-Length: 301
//<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
//<HTML>
// <HEAD>
// <TITLE>Error</TITLE>
// <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
// </HEAD>
// <BODY><H1>401 Unauthorized.</H1></BODY>
//</HTML>
//
void cHTTPResponse::ParseMessage(const char *RawMessage)
{
char scratch[512];
const char *p = RawMessage;
char *tmp;
ParseState state = ExpectProtocol;
ParseResult status = Continue;
Reset();
while (status == Continue) {
memset(scratch, 0, sizeof(scratch));
switch (state) {
case ExpectStatus:
p = getWord(scratch, sizeof(scratch), p);
this->status = strtoHTTPStatus(scratch);
p = restOfLine(scratch, sizeof(scratch), p); // just read the rest of the line
state = ExpectHeader;
break;
case ExpectProtocol:
p = getWord(scratch, sizeof(scratch), p);
if (!strcmp(scratch, "HTTP/1.0")) {
SetProtocol(HTTP_1_0);
state = ExpectStatus;
}
else if (!strcmp(scratch, "HTTP/1.1")) {
SetProtocol(HTTP_1_1);
state = ExpectStatus;
}
else status = UnsupportedProtocol;
break;
case ExpectContent:
printf("should read %ld bytes from %10.10s\n", ContentSize(), p);
status = Done;
break;
case ExpectHeader:
p = getWord(scratch, sizeof(scratch), p);
if (!strncmp(p, "\n\n", 2)) {
p += 2;
state = ExpectContent;
break;
}
if (!strncmp(p, "\r\n\r\n", 4)) {
p += 4;
state = ExpectContent;
break;
}
tmp = scratch + strlen(scratch);
if (*(tmp -1) == ':') {
*(tmp -1) = 0;
tmp = strdup(scratch);
p = restOfLine(scratch, sizeof(scratch), p);
if (!strcasecmp(tmp, "WWW-Authenticate") || !strcasecmp(tmp, "Authorization-Info"))
SetAuthorization(new cAuthorization(cHTTPRequest::GET, scratch));
else if (!strcasecmp(tmp, "content-type"))
SetContentType(scratch);
else if (!strcasecmp(tmp, "content-length"))
SetContentSize(atol(scratch));
else SetHeader(tmp, scratch);
FREE(tmp);
}
else {
status = InvalidName;
}
break;
default: break;
} // end switch
} // end while (status == OK)
}
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