summaryrefslogtreecommitdiff
path: root/src/client/cl_curl.c
blob: 3a59f19efe3e69beee977b262043e71db1c7c40d (plain)
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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
/*
===========================================================================
Copyright (C) 2006 Tony J. White (tjw@tjw.org)
Copyright (C) 2000-2009 Darklegion Development

This file is part of Tremulous.

Tremulous 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.

Tremulous 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 Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#ifdef USE_CURL
#include "client.h"
cvar_t *cl_cURLLib;

#ifdef USE_CURL_DLOPEN
#include "../sys/sys_loadlib.h"

char* (*qcurl_version)(void);

CURL* (*qcurl_easy_init)(void);
CURLcode (*qcurl_easy_setopt)(CURL *curl, CURLoption option, ...);
CURLcode (*qcurl_easy_perform)(CURL *curl);
void (*qcurl_easy_cleanup)(CURL *curl);
CURLcode (*qcurl_easy_getinfo)(CURL *curl, CURLINFO info, ...);
CURL* (*qcurl_easy_duphandle)(CURL *curl);
void (*qcurl_easy_reset)(CURL *curl);
const char *(*qcurl_easy_strerror)(CURLcode);

CURLM* (*qcurl_multi_init)(void);
CURLMcode (*qcurl_multi_add_handle)(CURLM *multi_handle,
                                                CURL *curl_handle);
CURLMcode (*qcurl_multi_remove_handle)(CURLM *multi_handle,
                                                CURL *curl_handle);
CURLMcode (*qcurl_multi_fdset)(CURLM *multi_handle,
                                                fd_set *read_fd_set,
                                                fd_set *write_fd_set,
                                                fd_set *exc_fd_set,
                                                int *max_fd);
CURLMcode (*qcurl_multi_perform)(CURLM *multi_handle,
                                                int *running_handles);
CURLMcode (*qcurl_multi_cleanup)(CURLM *multi_handle);
CURLMsg *(*qcurl_multi_info_read)(CURLM *multi_handle,
                                                int *msgs_in_queue);
const char *(*qcurl_multi_strerror)(CURLMcode);

static void *cURLLib = NULL;

/*
=================
GPA
=================
*/
static void *GPA(char *str)
{
	void *rv;

	rv = Sys_LoadFunction(cURLLib, str);
	if(!rv)
	{
		Com_Printf("Can't load symbol %s\n", str);
		clc.cURLEnabled = qfalse;
		return NULL;
	}
	else
	{
		Com_DPrintf("Loaded symbol %s (0x%p)\n", str, rv);
        return rv;
	}
}
#endif /* USE_CURL_DLOPEN */

/*
=================
CL_cURL_Init
=================
*/
qboolean CL_cURL_Init()
{
#ifdef USE_CURL_DLOPEN
	if(cURLLib)
		return qtrue;


	Com_Printf("Loading \"%s\"...", cl_cURLLib->string);
	if( (cURLLib = Sys_LoadLibrary(cl_cURLLib->string)) == 0 )
	{
#ifdef _WIN32
		return qfalse;
#else
		char fn[1024];

		Q_strncpyz( fn, Sys_Cwd( ), sizeof( fn ) );
		strncat(fn, "/", sizeof(fn)-strlen(fn)-1);
		strncat(fn, cl_cURLLib->string, sizeof(fn)-strlen(fn)-1);

		if((cURLLib = Sys_LoadLibrary(fn)) == 0)
		{
#ifdef ALTERNATE_CURL_LIB
			// On some linux distributions there is no libcurl.so.3, but only libcurl.so.4. That one works too.
			if( (cURLLib = Sys_LoadLibrary(ALTERNATE_CURL_LIB)) == 0 )
			{
				return qfalse;
			}
#else
			return qfalse;
#endif
		}
#endif /* _WIN32 */
	}

	clc.cURLEnabled = qtrue;

	qcurl_version = GPA("curl_version");

	qcurl_easy_init = GPA("curl_easy_init");
	qcurl_easy_setopt = GPA("curl_easy_setopt");
	qcurl_easy_perform = GPA("curl_easy_perform");
	qcurl_easy_cleanup = GPA("curl_easy_cleanup");
	qcurl_easy_getinfo = GPA("curl_easy_getinfo");
	qcurl_easy_duphandle = GPA("curl_easy_duphandle");
	qcurl_easy_reset = GPA("curl_easy_reset");
	qcurl_easy_strerror = GPA("curl_easy_strerror");
	
	qcurl_multi_init = GPA("curl_multi_init");
	qcurl_multi_add_handle = GPA("curl_multi_add_handle");
	qcurl_multi_remove_handle = GPA("curl_multi_remove_handle");
	qcurl_multi_fdset = GPA("curl_multi_fdset");
	qcurl_multi_perform = GPA("curl_multi_perform");
	qcurl_multi_cleanup = GPA("curl_multi_cleanup");
	qcurl_multi_info_read = GPA("curl_multi_info_read");
	qcurl_multi_strerror = GPA("curl_multi_strerror");

	if(!clc.cURLEnabled)
	{
		CL_cURL_Shutdown();
		Com_Printf("FAIL One or more symbols not found\n");
		return qfalse;
	}
	Com_Printf("OK\n");

	return qtrue;
#else
	clc.cURLEnabled = qtrue;
	return qtrue;
#endif /* USE_CURL_DLOPEN */
}

/*
=================
CL_cURL_Shutdown
=================
*/
void CL_cURL_Shutdown( void )
{
	CL_cURL_Cleanup();
#ifdef USE_CURL_DLOPEN
	if(cURLLib)
	{
		Sys_UnloadLibrary(cURLLib);
		cURLLib = NULL;
	}
	qcurl_easy_init = NULL;
	qcurl_easy_setopt = NULL;
	qcurl_easy_perform = NULL;
	qcurl_easy_cleanup = NULL;
	qcurl_easy_getinfo = NULL;
	qcurl_easy_duphandle = NULL;
	qcurl_easy_reset = NULL;

	qcurl_multi_init = NULL;
	qcurl_multi_add_handle = NULL;
	qcurl_multi_remove_handle = NULL;
	qcurl_multi_fdset = NULL;
	qcurl_multi_perform = NULL;
	qcurl_multi_cleanup = NULL;
	qcurl_multi_info_read = NULL;
	qcurl_multi_strerror = NULL;
#endif /* USE_CURL_DLOPEN */
}

void CL_cURL_Cleanup(void)
{
	if(clc.downloadCURLM) {
		if(clc.downloadCURL) {
			qcurl_multi_remove_handle(clc.downloadCURLM,
				clc.downloadCURL);
			qcurl_easy_cleanup(clc.downloadCURL);
		}
		qcurl_multi_cleanup(clc.downloadCURLM);
		clc.downloadCURLM = NULL;
		clc.downloadCURL = NULL;
	}
	else if(clc.downloadCURL) {
		qcurl_easy_cleanup(clc.downloadCURL);
		clc.downloadCURL = NULL;
	}
}

static int CL_cURL_CallbackProgress( void *dummy, double dltotal, double dlnow,
	double ultotal, double ulnow )
{
	clc.downloadSize = (int)dltotal;
	Cvar_SetValue( "cl_downloadSize", clc.downloadSize );
	clc.downloadCount = (int)dlnow;
	Cvar_SetValue( "cl_downloadCount", clc.downloadCount );
	return 0;
}

static size_t CL_cURL_CallbackWrite(void *buffer, size_t size, size_t nmemb,
	void *stream)
{
	FS_Write( buffer, size*nmemb, ((fileHandle_t*)stream)[0] );
	return size*nmemb;
}

void CL_cURL_BeginDownload( const char *localName, const char *remoteURL )
{
	clc.cURLUsed = qtrue;
	Com_Printf("URL: %s\n", remoteURL);
	Com_DPrintf("***** CL_cURL_BeginDownload *****\n"
		"Localname: %s\n"
		"RemoteURL: %s\n"
		"****************************\n", localName, remoteURL);
	CL_cURL_Cleanup();
	Q_strncpyz(clc.downloadURL, remoteURL, sizeof(clc.downloadURL));
	Q_strncpyz(clc.downloadName, localName, sizeof(clc.downloadName));
	Com_sprintf(clc.downloadTempName, sizeof(clc.downloadTempName),
		"%s.tmp", localName);

	// Set so UI gets access to it
	Cvar_Set("cl_downloadName", localName);
	Cvar_Set("cl_downloadSize", "0");
	Cvar_Set("cl_downloadCount", "0");
	Cvar_SetValue("cl_downloadTime", cls.realtime);

	clc.downloadBlock = 0; // Starting new file
	clc.downloadCount = 0;

	clc.downloadCURL = qcurl_easy_init();
	if(!clc.downloadCURL) {
		Com_Error(ERR_DROP, "CL_cURL_BeginDownload: qcurl_easy_init() "
			"failed\n");
		return;
	}
	clc.download = FS_SV_FOpenFileWrite(clc.downloadTempName);
	if(!clc.download) {
		Com_Error(ERR_DROP, "CL_cURL_BeginDownload: failed to open "
			"%s for writing\n", clc.downloadTempName);
		return;
	}
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_WRITEDATA, clc.download);
	if(com_developer->integer)
		qcurl_easy_setopt(clc.downloadCURL, CURLOPT_VERBOSE, 1);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_URL, clc.downloadURL);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_TRANSFERTEXT, 0);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_REFERER,
		va("Tremulous://%s", NET_AdrToString(clc.serverAddress)));
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_USERAGENT, va("%s %s",
		Q3_VERSION, qcurl_version()));
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_WRITEFUNCTION,
		CL_cURL_CallbackWrite);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_WRITEDATA, &clc.download);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_NOPROGRESS, 0);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_PROGRESSFUNCTION,
		CL_cURL_CallbackProgress);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_PROGRESSDATA, NULL);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_FAILONERROR, 1);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_FOLLOWLOCATION, 1);
	qcurl_easy_setopt(clc.downloadCURL, CURLOPT_MAXREDIRS, 5);
	clc.downloadCURLM = qcurl_multi_init();	
	if(!clc.downloadCURLM) {
		qcurl_easy_cleanup(clc.downloadCURL);
		clc.downloadCURL = NULL;
		Com_Error(ERR_DROP, "CL_cURL_BeginDownload: qcurl_multi_init() "
			"failed\n");
		return;
	}
	qcurl_multi_add_handle(clc.downloadCURLM, clc.downloadCURL);

	if(!(clc.sv_allowDownload & DLF_NO_DISCONNECT) &&
		!clc.cURLDisconnected) {

		CL_AddReliableCommand("disconnect", qtrue);
		CL_WritePacket();
		CL_WritePacket();
		CL_WritePacket();
		clc.cURLDisconnected = qtrue;
	}
}

void CL_cURL_PerformDownload(void)
{
	CURLMcode res;
	CURLMsg *msg;
	int c;
	int i = 0;

	res = qcurl_multi_perform(clc.downloadCURLM, &c);
	while(res == CURLM_CALL_MULTI_PERFORM && i < 100) {
		res = qcurl_multi_perform(clc.downloadCURLM, &c);
		i++;
	}
	if(res == CURLM_CALL_MULTI_PERFORM)
		return;
	msg = qcurl_multi_info_read(clc.downloadCURLM, &c);
	if(msg == NULL) {
		return;
	}
	FS_FCloseFile(clc.download);
	if(msg->msg == CURLMSG_DONE && msg->data.result == CURLE_OK) {
		FS_SV_Rename(clc.downloadTempName, clc.downloadName);
		clc.downloadRestart = qtrue;
	}
	else {
		long code;

		qcurl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE,
			&code);	
		Com_Error(ERR_DROP, "Download Error: %s Code: %ld URL: %s",
			qcurl_easy_strerror(msg->data.result),
			code, clc.downloadURL);
	}

	CL_NextDownload();
}
#endif /* USE_CURL */