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/*
Weather Protocol plugin for Miranda IM
Copyright (C) 2002-2004 Calvin Che
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; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* This file contain the source related to downloading weather info
from the web using netlib
*/
#include "stdafx.h"
char *szInfo;
char *szData;
HANDLE hNetlibUser;
// function to download webpage from the internet
// szUrl = URL of the webpage to be retrieved
// return value = 0 for success, 1 or HTTP error code for failure
// global var used: szData, szInfo = containing the retrieved data
//
int InternetDownloadFile(char *szUrl)
{
NETLIBHTTPREQUEST nlhr = { 0 };
// initialize the netlib request
nlhr.cbSize = sizeof(nlhr);
nlhr.requestType = REQUEST_GET;
nlhr.flags = NLHRF_DUMPASTEXT;
nlhr.szUrl = szUrl;
// change the header so the plugin is pretended to be IE 6 + WinXP
nlhr.headersCount++;
nlhr.headers = (NETLIBHTTPHEADER*)malloc(sizeof(NETLIBHTTPHEADER)*nlhr.headersCount);
nlhr.headers[nlhr.headersCount - 1].szName = "User-Agent";
nlhr.headers[nlhr.headersCount - 1].szValue = NETLIB_USER_AGENT;
// download the page
NETLIBHTTPREQUEST *nlhrReply = (NETLIBHTTPREQUEST*)CallService(MS_NETLIB_HTTPTRANSACTION, (WPARAM)hNetlibUser, (LPARAM)&nlhr);
if (nlhrReply) {
// return error code if the recieved code is neither 200 OK or 302 Moved
if (nlhrReply->resultCode != 200 && nlhrReply->resultCode != 302)
return nlhrReply->resultCode;
// if the recieved code is 200 OK
else if (nlhrReply->resultCode == 200) {
// allocate memory and save the retrieved data
szData = (char *)malloc(mir_strlen(nlhrReply->pData) + 2);
mir_strncpy(szData, nlhrReply->pData, mir_strlen(nlhrReply->pData));
}
// if the recieved code is 302 Moved, Found, etc
else if (nlhrReply->resultCode == 302) { // page moved
int i;
// get the url for the new location and save it to szInfo
// look for the reply header "Location"
for (i = 0; i < nlhrReply->headersCount; i++) {
if (!mir_strcmp(nlhrReply->headers[i].szName, "Location")) {
szData = (char *)malloc(512);
// add "Moved/Location:" in front of the new URL for identification
mir_snprintf(szData, 512, "Moved/Location: %s\n", nlhrReply->headers[i].szValue);
break;
}
}
// log the new url into netlib log
CallService(MS_NETLIB_LOG, (WPARAM)hNetlibUser, (LPARAM)szData);
}
}
// if the data does not downloaded successfully (ie. disconnected), then return 1 as error code
else return 1;
// make a copy of the retrieved data, then free the memory of the http reply
szInfo = szData;
CallService(MS_NETLIB_FREEHTTPREQUESTSTRUCT, 0, (LPARAM)nlhrReply);
// the recieved data is empty, data was not recieved, so return an error code of 1
if (!mir_strcmp(szInfo, "")) return 1;
return 0;
}
//============ NETLIB INITIALIZATION ============
void NetlibInit()
{
NETLIBUSER nlu = { 0 };
nlu.cbSize = sizeof(nlu);
nlu.flags = NUF_OUTGOING | NUF_HTTPCONNS | NUF_NOHTTPSOPTION | NUF_TCHAR;
nlu.szSettingsModule = MODNAME;
nlu.ptszDescriptiveName = TranslateT("Non-IM Contacts");
hNetlibUser = (HANDLE)CallService(MS_NETLIB_REGISTERUSER, 0, (LPARAM)&nlu);
}
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