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