/
loader.cpp
437 lines (390 loc) · 9.69 KB
/
loader.cpp
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
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
/**
* vim: set ts=4 sw=4 tw=99 noet :
* ======================================================
* Metamod:Source
* Copyright (C) 2004-2015 AlliedModders LLC and authors.
* All rights reserved.
* ======================================================
*
* This software is provided 'as-is', without any express or implied warranty.
* In no event will the authors be held liable for any damages arising from
* the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software in a
* product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#include <time.h>
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "loader.h"
#include "serverplugin.h"
#include "gamedll.h"
#include "utility.h"
#if defined __APPLE__
#include <crt_externs.h>
#endif
static HMODULE mm_library = NULL;
static char mm_fatal_logfile[PLATFORM_MAX_PATH] = "metamod-fatal.log";
MetamodBackend mm_backend = MMBackend_UNKNOWN;
extern void
mm_LogFatal(const char *message, ...)
{
FILE *fp;
time_t t;
va_list ap;
char header[256];
fp = fopen(mm_fatal_logfile, "at");
if (!fp && (fp = fopen("metamod-fatal.log", "at")) == NULL)
return;
t = time(NULL);
strftime(header, sizeof(header), "%m/%d/%Y - %H:%M:%S", localtime(&t));
fprintf(fp, "L %s: ", header);
va_start(ap, message);
vfprintf(fp, message, ap);
va_end(ap);
fprintf(fp, "\n");
fclose(fp);
}
static const char *backend_names[] =
{
"2.ep1",
"2.darkm",
"2.ep2",
"2.bgt",
"2.eye",
"2.css",
"2.ep2v",
"2.l4d",
"2.l4d2",
"2.swarm",
"2.portal2",
"2.csgo",
"2.dota",
"2.hl2dm",
"2.dods",
"2.tf2",
"2.nd",
"2.sdk2013",
"2.blade",
"2.insurgency",
"2.contagion",
"2.bms",
};
#if defined _WIN32
#define LIBRARY_EXT ".dll"
#define LIBRARY_MINEXT ".dll"
#elif defined __APPLE__
#define LIBRARY_EXT ".dylib"
#define LIBRARY_MINEXT ".dylib"
#elif defined __linux__
#define LIBRARY_EXT LIB_SUFFIX
#define LIBRARY_MINEXT ".so"
#endif
bool
mm_LoadMetamodLibrary(MetamodBackend backend, char *buffer, size_t maxlength)
{
size_t len, temp_len;
char mm_path[PLATFORM_MAX_PATH * 2];
/* Get our path */
if (!mm_GetFileOfAddress((void*)mm_GetFileOfAddress, mm_path, sizeof(mm_path)))
return false;
len = strlen(mm_path);
const char *pLastSlash = strrchr(mm_path, PATH_SEP_CHAR);
if (!pLastSlash)
return false;
temp_len = strlen(&pLastSlash[1]);
if (len < temp_len)
return false;
/* Build log file name */
mm_path[len - temp_len] = '\0';
mm_Format(mm_fatal_logfile,
sizeof(mm_fatal_logfile),
"%smetamod-fatal.log",
mm_path);
/* Replace server.dll with the new binary we want */
mm_Format(&mm_path[len - temp_len],
sizeof(mm_path) - (len - temp_len),
"metamod.%s" LIBRARY_MINEXT,
backend_names[backend]);
mm_library = (HMODULE)mm_LoadLibrary(mm_path, buffer, maxlength);
return (mm_library != NULL);
}
void
mm_UnloadMetamodLibrary()
{
mm_UnloadLibrary(mm_library);
mm_library = NULL;
}
#if defined _WIN32
#define EXPORT extern "C" __declspec(dllexport)
#elif defined __GNUC__
#define EXPORT extern "C" __attribute__ ((visibility("default")))
#endif
EXPORT void *
CreateInterface(const char *name, int *ret)
{
/* If we've got a VSP bridge, do nothing. */
if (vsp_bridge != NULL)
{
if (ret != NULL)
*ret = 1;
return NULL;
}
void *ptr;
if (strncmp(name, "ISERVERPLUGINCALLBACKS", 22) == 0)
{
/* Either load as VSP or start VSP listener */
ptr = mm_GetVspCallbacks(atoi(&name[22]));
}
else if (gamedll_bridge == NULL)
{
/* Load as gamedll */
ptr = mm_GameDllRequest(name, ret);
}
else
{
/* If we've got a gamedll bridge, forward the request. */
return gamedll_bridge->QueryInterface(name, ret);
}
if (ret != NULL)
*ret = (ptr != NULL) ? 0 : 1;
return ptr;
}
void *
mm_GetProcAddress(const char *name)
{
return mm_GetLibAddress(mm_library, name);
}
void
mm_GetGameName(char *buffer, size_t size)
{
buffer[0] = '\0';
bool bHasDedicated = false;
#if defined _WIN32
static char game[128];
LPWSTR pCmdLine = GetCommandLineW();
int argc;
LPWSTR *wargv = CommandLineToArgvW(pCmdLine, &argc);
for (int i = 0; i < argc; ++i)
{
if (wcscmp(wargv[i], L"-game") == 0)
{
if (++i >= argc)
break;
wcstombs(buffer, wargv[i], size);
buffer[size-1] = '\0';
}
else if (wcscmp(wargv[i], L"-dedicated") == 0)
{
bHasDedicated = true;
}
}
LocalFree(wargv);
#elif defined __APPLE__
int argc = *_NSGetArgc();
char **argv = *_NSGetArgv();
for (int i = 0; i < argc; ++i)
{
if (strcmp(argv[i], "-game") == 0)
{
if (++i >= argc)
break;
strncpy(buffer, argv[i], size);
buffer[size-1] = '\0';
}
else if (strcmp(argv[i], "-dedicated") == 0)
{
bHasDedicated = true;
}
}
#elif defined __linux__
FILE *pFile = fopen("/proc/self/cmdline", "rb");
if (pFile)
{
char *arg = NULL;
size_t argsize = 0;
bool bNextIsGame = false;
while (getdelim(&arg, &argsize, 0, pFile) != -1)
{
if (bNextIsGame)
{
strncpy(buffer, arg, size);
buffer[size-1] = '\0';
bNextIsGame = false;
}
if (strcmp(arg, "-game") == 0)
{
bNextIsGame = true;
}
else if (strcmp(arg, "-dedicated") == 0)
{
bHasDedicated = true;
}
}
free(arg);
fclose(pFile);
}
#else
#error unsupported platform
#endif
if (buffer[0] == 0)
{
// HackHackHack - Different engines have different defaults if -game isn't specified
// we only use this for game detection, and not even in all cases. Old behavior was to
// give back ".", which was only really accurate for Dark Messiah. We'll add a special
// case for Source2 / Dota as well, since it only supports gameinfo loading, which relies
// on accuracy here more than VSP loading.
if (bHasDedicated)
{
strncpy(buffer, "dota", size);
}
else
{
strncpy(buffer, ".", size);
}
}
}
MetamodBackend
mm_DetermineBackend(QueryValveInterface engineFactory, QueryValveInterface serverFactory, const char *game_name)
{
if (engineFactory("VEngineServer023", NULL) != NULL)
{
if (engineFactory("EngineTraceServer004", NULL) == NULL)
{
goto TF2branch;
}
if (engineFactory("IEngineSoundServer004", NULL) != NULL)
{
return MMBackend_Insurgency;
}
if (serverFactory("ServerGameDLL010", NULL) != NULL)
{
return MMBackend_BMS;
}
return MMBackend_CSGO;
}
else if (engineFactory("VEngineServer022", NULL) != NULL &&
engineFactory("VEngineCvar007", NULL) != NULL)
{
if (engineFactory("EngineTraceServer004", NULL) != NULL)
{
if (engineFactory("XboxSystemInterface001", NULL) != NULL)
{
return MMBackend_AlienSwarm;
}
void *lib = (void *)serverFactory;
void *addr;
if (strcmp(game_name, "portal2") == 0
|| (addr = mm_FindPattern(lib, "baseportalcombatweapon", sizeof("baseportalcombatweapon") - 1)))
{
return MMBackend_Portal2;
}
return MMBackend_Blade;
}
else if (engineFactory("VPrecacheSystem001", NULL) != NULL)
{
if (serverFactory("ServerGameTags002", NULL) != NULL)
{
return MMBackend_NuclearDawn;
}
else
{
void *lib = (void *)serverFactory;
void *addr;
if (strcmp(game_name, "contagion") == 0
|| (addr = mm_FindPattern(lib, "Contagion_Chat_All", sizeof("Contagion_Chat_All") - 1)))
{
return MMBackend_Contagion;
}
else
{
return MMBackend_Left4Dead2;
}
}
}
return MMBackend_Left4Dead;
}
else if (engineFactory("VEngineServer021", NULL) != NULL)
{
/* Check for OB */
if (engineFactory("VEngineCvar004", NULL) != NULL)
{
if (engineFactory("VModelInfoServer002", NULL) != NULL)
{
/* BGT has same iface version numbers and libs as ep2 */
void *lib = (void *)serverFactory;
void *addr;
if (strcmp(game_name, "pm") == 0
|| (addr = mm_FindPattern(lib, "DT_PMPlayerResource", sizeof("DT_PMPlayerResource") - 1)))
{
return MMBackend_BloodyGoodTime;
}
else
{
return MMBackend_Episode2;
}
}
else if (engineFactory("VModelInfoServer003", NULL) != NULL)
{
if (engineFactory("VFileSystem017", NULL) != NULL)
{
return MMBackend_EYE;
}
else
{
TF2branch:
void *lib = (void *)serverFactory;
void *addr;
if (strcmp(game_name, "cstrike") == 0
|| (addr = mm_FindPattern(lib, "DT_CSPlayerResource", sizeof("DT_CSPlayerResource") - 1)))
{
return MMBackend_CSS;
}
else if (strcmp(game_name, "tf") == 0
|| (addr = mm_FindPattern(lib, "DT_TFPlayerResource", sizeof("DT_TFPlayerResource") - 1)))
{
return MMBackend_TF2;
}
else if (strcmp(game_name, "dod") == 0
|| (addr = mm_FindPattern(lib, "DT_DODPlayerResource", sizeof("DT_DODPlayerResource") - 1)))
{
return MMBackend_DODS;
}
else if (strcmp(game_name, "hl2mp") == 0)
{
return MMBackend_HL2DM;
}
else
{
return MMBackend_SDK2013;
}
}
}
}
/* Check for Episode One/Old Engine */
else if (engineFactory("VModelInfoServer001", NULL) != NULL &&
(engineFactory("VEngineCvar003", NULL) != NULL ||
engineFactory("VEngineCvar002", NULL) != NULL))
{
/* Check for Dark Messiah which has a weird directory structure */
if (strcmp(game_name, ".") == 0)
{
return MMBackend_DarkMessiah;
}
return MMBackend_Episode1;
}
}
return MMBackend_UNKNOWN;
}