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/*
* Copyright (C) 2004 Ewan Bhamrah Harley <code@ewan.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "syshead.h"
#ifdef WIN32
#include <wininet.h>
#include <malloc.h>
LPCTSTR getIeHttpProxyError=NULL;
/* getIeHttpProxy fetches the current IE proxy settings for http */
LPCTSTR getIeHttpProxy()
{
DWORD psize=0;
INTERNET_PROXY_INFO *pinfo;
LPTSTR proxyString;
LPTSTR p;
LPTSTR q;
unsigned int len;
/* first see how big a buffer we need for the IPO structure */
InternetQueryOption(NULL, INTERNET_OPTION_PROXY, NULL, &psize);
if(!psize)
{
getIeHttpProxyError="InternetQueryOption failed to return buffer size";
return(NULL);
}
/* allocate memory for IPO */
pinfo = malloc (psize*sizeof(TCHAR));
if (pinfo == NULL)
{
getIeHttpProxyError="malloc failed (1)";
return(NULL);
}
/* now run the real query */
if(!InternetQueryOption(NULL, INTERNET_OPTION_PROXY, (LPVOID) pinfo, &psize))
{
getIeHttpProxyError="InternetQueryOption() failed to find proxy info";
free(pinfo);
return(NULL);
}
/* see what sort of result we got */
if(pinfo->dwAccessType == INTERNET_OPEN_TYPE_DIRECT)
{
/* No proxy configured */
free(pinfo);
return("");
}
else if(pinfo->dwAccessType == INTERNET_OPEN_TYPE_PROXY)
{
/* we have a proxy - now parse result string */
/* if result string does NOT contain an '=' sign then */
/* there is a single proxy for all protocols */
for (p=(LPTSTR)pinfo->lpszProxy; *p && *p != '='; p++);
if(!*p)
{
/* single proxy */
/* allocate a new string to return */
len = 1+strlen(pinfo->lpszProxy);
proxyString = malloc (len*sizeof(TCHAR));
if (proxyString == NULL)
{
getIeHttpProxyError="malloc failed (2)";
free(pinfo);
return(NULL);
}
strncpy(proxyString, pinfo->lpszProxy,len);
proxyString[len]=0;
free(pinfo);
return(proxyString);
}
else
{
/* multiple space seperated proxies defined in the form */
/* protocol=proxyhost[:port] */
/* we want the one marked "http=", if any. */
p=(LPTSTR)pinfo->lpszProxy;
while(*p && strncmp(p, "http=", 5))
{
for(; *p && *p != ' '; p++);
if(*p) p++;
}
if(*p)
{
/* found the proxy */
p+=5;
for(q=p; *q && *q != ' '; q++);
/* allocate a buffer for the proxy information */
len=1+(q-p);
proxyString=malloc(len*sizeof(TCHAR));
if(proxyString==NULL)
{
getIeHttpProxyError="malloc failed (3)";
free(pinfo);
return(NULL);
}
strncpy(proxyString, p, len);
proxyString[len]=0;
free(pinfo);
return(proxyString);
}
else
{
/* No http proxy in list */
free(pinfo);
return("");
}
}
}
else
{
/* InternetQueryOption returned a proxy type we don't know about*/
getIeHttpProxyError="Unknown Proxy Type";
free(pinfo);
return(NULL);
}
}
#else
#ifdef _MSC_VER /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
static void dummy (void) {}
#endif
#endif /* WIN32 */
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