1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
Weather Protocol plugin for Miranda IM
Copyright (C) 2005-2011 Boris Krasnovskiy All Rights Reserved
Copyright (C) 2002-2005 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; version 2
of the License.
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, see <http://www.gnu.org/licenses/>.
*/
/*
This file contain the source related to downloading weather info
from the web using netlib
*/
#include "weather.h"
HANDLE hNetlibUser, hNetlibHttp;
int findHeader(NETLIBHTTPREQUEST *nlhrReply, char *hdr)
{
int res = -1, i;
for (i=0; i<nlhrReply->headersCount; i++)
{
if (_stricmp(nlhrReply->headers[i].szName, hdr) == 0)
{
res = i;
break;
}
}
return res;
}
//============ DOWNLOAD NEW WEATHER ============
// 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, char* cookie, char** szData)
{
int result = 0xBADBAD;
char* szRedirUrl = NULL;
NETLIBHTTPREQUEST nlhr = {0}, *nlhrReply;
NETLIBHTTPHEADER headers[6];
// initialize the netlib request
nlhr.cbSize = sizeof(nlhr);
nlhr.requestType = REQUEST_GET;
nlhr.flags = NLHRF_DUMPASTEXT | NLHRF_HTTP11;
nlhr.szUrl = szUrl;
nlhr.nlc = hNetlibHttp;
if (CallService(MS_SYSTEM_GETVERSION, 0, 0) >= PLUGIN_MAKE_VERSION(0,9,0,5))
nlhr.flags |= NLHRF_PERSISTENT | NLHRF_REDIRECT;
// change the header so the plugin is pretended to be IE 6 + WinXP
nlhr.headersCount = 5;
nlhr.headers = headers;
nlhr.headers[0].szName = "User-Agent";
nlhr.headers[0].szValue = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)";
nlhr.headers[1].szName = "Cache-Control";
nlhr.headers[1].szValue = "no-cache";
nlhr.headers[2].szName = "Pragma";
nlhr.headers[2].szValue = "no-cache";
nlhr.headers[3].szName = "Connection";
nlhr.headers[3].szValue = "close";
nlhr.headers[4].szName = "Cookie";
nlhr.headers[4].szValue = cookie;
// nlhr.headers[5].szName = "If-Modified-Since";
// nlhr.headers[5].szValue = "Tue, 24 Feb 2009 03:44:23 GMT";
if (cookie == NULL || cookie[0] == 0) --nlhr.headersCount;
while (result == 0xBADBAD)
{
// download the page
nlhrReply = (NETLIBHTTPREQUEST*)CallService(MS_NETLIB_HTTPTRANSACTION,
(WPARAM)hNetlibUser,(LPARAM)&nlhr);
if (nlhrReply)
{
// if the recieved code is 200 OK
if(nlhrReply->resultCode == 200)
{
if (nlhrReply->dataLength)
{
char* end;
int i;
result = 0;
// i = findHeader(nlhrReply, "Date-Modified");
// allocate memory and save the retrieved data
*szData = (char *)mir_alloc(nlhrReply->dataLength + 2);
memcpy(*szData, nlhrReply->pData, nlhrReply->dataLength);
(*szData)[nlhrReply->dataLength] = 0;
i = findHeader(nlhrReply, "Content-Type");
if (i != -1)
{
if (strstr(_strlwr((char*)nlhrReply->headers[i].szValue), "utf-8"))
mir_utf8decode(*szData, NULL);
}
end = *szData;
for (;;)
{
char* beg = strstr(end, "<meta");
if (beg == NULL) break;
else
{
char* method, tmp;
end = strchr(beg, '>');
tmp = *end; *end = 0;
method = strstr(beg, "http-equiv=\"");
if (method && _strnicmp(method+12, "Content-Type", 12) == 0 && strstr(method, "utf-8"))
{
*end = tmp;
mir_utf8decode(*szData, NULL);
break;
}
else
*end = tmp;
}
}
}
else
result = DATA_EMPTY;
}
// if the recieved code is 302 Moved, Found, etc
// workaround for url forwarding
else if(nlhrReply->resultCode == 302 || nlhrReply->resultCode == 301 || nlhrReply->resultCode == 303 ) // page moved
{
// get the url for the new location and save it to szInfo
// look for the reply header "Location"
int i = findHeader(nlhrReply, "Location");
if (i != -1)
{
size_t rlen = 0;
if (nlhrReply->headers[i].szValue[0] == '/')
{
char* szPath;
char* szPref = strstr(szUrl, "://");
szPref = szPref ? szPref + 3 : szUrl;
szPath = strchr(szPref, '/');
rlen = szPath != NULL ? szPath - szUrl : strlen(szUrl);
}
szRedirUrl = (char*)mir_realloc(szRedirUrl,
rlen + strlen(nlhrReply->headers[i].szValue)*3 + 1);
strncpy(szRedirUrl, szUrl, rlen);
strcpy(szRedirUrl+rlen, nlhrReply->headers[i].szValue);
GetSearchStr(szRedirUrl);
nlhr.szUrl = szRedirUrl;
}
}
// return error code if the recieved code is neither 200 OK nor 302 Moved
else
{
*szData = (char *)mir_alloc(512);
// store the error code in szData
wsprintf(*szData, "Error occured! HTTP Error: %i\n", nlhrReply->resultCode);
result = (int)nlhrReply->resultCode;
}
hNetlibHttp = nlhrReply->nlc;
// make a copy of the retrieved data, then free the memory of the http reply
CallService(MS_NETLIB_FREEHTTPREQUESTSTRUCT,0,(LPARAM)nlhrReply);
}
// if the data does not downloaded successfully (ie. disconnected), then return 1000 as error code
else
{
*szData = (char *)mir_alloc(512);
// store the error code in szData
strcpy(*szData, "NetLib error occurred!!");
result = NETLIB_ERROR;
hNetlibHttp = NULL;
}
}
mir_free(szRedirUrl);
return result;
}
//============ NETLIB INITIALIZATION ============
// initialize netlib support for weather protocol
void NetlibInit(void)
{
NETLIBUSER nlu = {0};
nlu.cbSize = sizeof(nlu);
nlu.flags = NUF_OUTGOING|NUF_HTTPCONNS|NUF_NOHTTPSOPTION;
nlu.szSettingsModule = WEATHERPROTONAME;
nlu.szDescriptiveName = Translate("Weather HTTP connections");
hNetlibUser=(HANDLE)CallService(MS_NETLIB_REGISTERUSER,0,(LPARAM)&nlu);
}
void NetlibHttpDisconnect(void)
{
if (hNetlibHttp)
{
HANDLE hConn = hNetlibHttp;
hNetlibHttp = NULL;
Netlib_CloseHandle(hConn);
}
}
|
