aboutsummaryrefslogtreecommitdiffstats
path: root/package/libpcap/patches/104-no_rej_files.patch
blob: d3ae58c0ade8f07d4d0b2f735d20873b8f37c5c0 (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
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
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
diff -urN libpcap-0.9.8/gencode.c.rej libpcap-0.9.8.new/gencode.c.rej
--- libpcap-0.9.8/gencode.c.rej	2007-07-10 21:38:15.000000000 +0200
+++ libpcap-0.9.8.new/gencode.c.rej	1970-01-01 01:00:00.000000000 +0100
@@ -1,465 +0,0 @@
-***************
-*** 24,29 ****
-      "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
-  #endif
-  
-  #ifdef HAVE_CONFIG_H
-  #include "config.h"
-  #endif
---- 24,31 ----
-      "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
-  #endif
-  
-+ #define ENABLE_WLAN_FILTERING_PATCH
-+ 
-  #ifdef HAVE_CONFIG_H
-  #include "config.h"
-  #endif
-***************
-*** 144,150 ****
-  	OR_NET,		/* relative to the network-layer header */
-  	OR_NET_NOSNAP,	/* relative to the network-layer header, with no SNAP header at the link layer */
-  	OR_TRAN_IPV4,	/* relative to the transport-layer header, with IPv4 network layer */
-- 	OR_TRAN_IPV6	/* relative to the transport-layer header, with IPv6 network layer */
-  };
-  
-  /*
---- 146,153 ----
-  	OR_NET,		/* relative to the network-layer header */
-  	OR_NET_NOSNAP,	/* relative to the network-layer header, with no SNAP header at the link layer */
-  	OR_TRAN_IPV4,	/* relative to the transport-layer header, with IPv4 network layer */
-+ 	OR_TRAN_IPV6,	/* relative to the transport-layer header, with IPv6 network layer */
-+ 	OR_LINK_AFTER_WIRELESS_HDR /* After the 802.11 variable length header */
-  };
-  
-  /*
-***************
-*** 199,204 ****
-  static struct block *gen_linktype(int);
-  static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
-  static struct block *gen_llc_linktype(int);
-  static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
-  #ifdef INET6
-  static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
---- 202,208 ----
-  static struct block *gen_linktype(int);
-  static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
-  static struct block *gen_llc_linktype(int);
-+ static struct block *gen_802_11_llc_linktype(int);
-  static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
-  #ifdef INET6
-  static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
-***************
-*** 242,247 ****
-  static struct slist *xfer_to_a(struct arth *);
-  static struct block *gen_mac_multicast(int);
-  static struct block *gen_len(int, int);
-  
-  static struct block *gen_ppi_dlt_check();
-  static struct block *gen_msg_abbrev(int type);
---- 246,252 ----
-  static struct slist *xfer_to_a(struct arth *);
-  static struct block *gen_mac_multicast(int);
-  static struct block *gen_len(int, int);
-+ static struct block *gen_check_802_11_data_frame();
-  
-  static struct block *gen_ppi_dlt_check();
-  static struct block *gen_msg_abbrev(int type);
-***************
-*** 1345,1350 ****
-  	return s;
-  }
-  
-  
-  /*
-   * Load a value relative to the beginning of the specified header.
---- 1350,1487 ----
-  	return s;
-  }
-  
-+ /*
-+  * Load a value relative to the beginning of the link-layer header after the 802.11
-+  * header, i.e. LLC_SNAP.
-+  * The link-layer header doesn't necessarily begin at the beginning
-+  * of the packet data; there might be a variable-length prefix containing
-+  * radio information.
-+  */
-+ static struct slist *
-+ gen_load_ll_after_802_11_rel(offset, size)
-+ 	u_int offset, size;
-+ {
-+ 	struct slist *s, *s_load_fc;
-+ 	struct slist *sjset_qos;
-+ 	struct slist *s_load;
-+ 	struct slist *s_ld_a_2;
-+ 	struct slist *s_add_a_x;
-+ 	struct slist *s_a_to_x;
-+ 	struct slist *sjset_data_frame_1;
-+ 	struct slist *sjset_data_frame_2;
-+ 	struct slist *s_load_x_0;	
-+ 
-+ 	/*
-+ 	 * This code is not compatible with the optimizer, as
-+ 	 * we are generating jmp instructions within a normal
-+ 	 * slist of instructions
-+ 	 *
-+ 	 */
-+ 	no_optimize = 1;
-+ 	
-+ 	s = gen_llprefixlen();
-+ 
-+ 	/*
-+ 	 * If "s" is non-null, it has code to arrange that the X register
-+ 	 * contains the length of the prefix preceding the link-layer
-+ 	 * header.
-+ 	 *
-+ 	 * Otherwise, the length of the prefix preceding the link-layer
-+ 	 * header is "off_ll".
-+ 	 */
-+ 	if (s != NULL) {
-+ 		/*
-+ 		 * There's a variable-length prefix preceding the
-+ 		 * link-layer header.  "s" points to a list of statements
-+ 		 * that put the length of that prefix into the X register.
-+ 		 * do an indirect load, to use the X register as an offset.
-+ 		 */
-+ 
-+ 		/*
-+ 		 * Load the Frame Control field
-+ 		 */
-+ 		s_load_fc = new_stmt(BPF_LD|BPF_IND|BPF_B);
-+ 		s_load_fc->s.k = 0;
-+ 	} else {
-+ 		/*
-+ 		 * There is no variable-length header preceding the
-+ 		 * link-layer header; add in off_ll, which, if there's
-+ 		 * a fixed-length header preceding the link-layer header,
-+ 		 * is the length of that header.
-+ 		 */
-+ 
-+ 		/*
-+ 		 * We need to load the Frame control directly, and
-+ 		 * then load X with a fake 0, i.e. the length of the 
-+ 		 * non-existing prepended header
-+ 		 */
-+ 
-+ 		/*
-+ 		 * TODO GV: I'm not sure if 0 is the right constant in this
-+ 		 * case. If the link layer has a fixed length prepended header,
-+ 		 * that should be the value that we put here
-+ 		 */
-+ 
-+ 		/* Load 0 into X */
-+ 		s_load_x_0 = new_stmt(BPF_LDX|BPF_IMM);
-+ 		s_load_x_0->s.k = 0;
-+ 
-+ 		/*
-+ 		 * TODO GV: I'm not sure if 0 is the right constant in this
-+ 		 * case. If the link layer has a fixed length prepended header,
-+ 		 * that should be the value that we put here
-+ 		 */
-+ 
-+ 		/*
-+ 		 * load the Frame Control with absolute access
-+ 		 */
-+ 		s_load_fc = new_stmt(BPF_LD|BPF_ABS|BPF_B);
-+ 		s_load_fc->s.k = 0;
-+ 		s = s_load_x_0;
-+ 	}
-+ 
-+ 	/*
-+ 	 * Generate the common instructions to check if it's a data frame
-+ 	 * and if so compute the 802.11 header length
-+ 	 */
-+ 	sjset_data_frame_1 = new_stmt(JMP(BPF_JSET));	// b3 should be 1
-+ 	sjset_data_frame_1->s.k = 0x8;
-+ 		
-+ 	sjset_data_frame_2 = new_stmt(JMP(BPF_JSET));	// b2 should be 0
-+ 	sjset_data_frame_2->s.k = 0x04;
-+ 
-+ 	sjset_qos = new_stmt(JMP(BPF_JSET));
-+ 	sjset_qos->s.k = 0x80; //QOS bit
-+ 		
-+ 	s_ld_a_2 = new_stmt(BPF_LD|BPF_IMM);
-+ 	s_ld_a_2->s.k = 2;
-+ 
-+ 	s_add_a_x = new_stmt(BPF_ALU|BPF_ADD|BPF_X);
-+ 	s_a_to_x = new_stmt(BPF_MISC|BPF_TAX);
-+ 
-+ 	s_load = new_stmt(BPF_LD|BPF_IND|size);
-+ 	s_load->s.k = offset;
-+ 
-+ 	sjset_data_frame_1->s.jt = sjset_data_frame_2;
-+ 	sjset_data_frame_1->s.jf = s_load;
-+ 		
-+ 	sjset_data_frame_2->s.jt = s_load;
-+ 	sjset_data_frame_2->s.jf = sjset_qos;
-+ 		
-+ 	sjset_qos->s.jt = s_ld_a_2;
-+ 	sjset_qos->s.jf = s_load;
-+ 
-+ 	sappend(s, s_load_fc);
-+ 	sappend(s_load_fc, sjset_data_frame_1);
-+ 	sappend(sjset_data_frame_1, sjset_data_frame_2);
-+ 	sappend(sjset_data_frame_2, sjset_qos);
-+ 	sappend(sjset_qos, s_ld_a_2);
-+ 	sappend(s_ld_a_2, s_add_a_x);
-+ 	sappend(s_add_a_x,s_a_to_x);
-+ 	sappend(s_a_to_x, s_load);
-+ 	
-+ 	return s;
-+ }
-  
-  /*
-   * Load a value relative to the beginning of the specified header.
-***************
-*** 1367,1372 ****
-  		s = gen_load_llrel(offset, size);
-  		break;
-  
-  	case OR_NET:
-  		s = gen_load_llrel(off_nl + offset, size);
-  		break;
---- 1504,1525 ----
-  		s = gen_load_llrel(offset, size);
-  		break;
-  
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+ 
-+ 	case OR_LINK_AFTER_WIRELESS_HDR:
-+ 		if (linktype != DLT_IEEE802_11_RADIO 
-+ 			&& linktype != DLT_PPI 
-+ 			&& linktype != DLT_IEEE802_11 
-+ 			&& linktype != DLT_PRISM_HEADER
-+ 			&& linktype != DLT_IEEE802_11_RADIO_AVS)
-+ 		{
-+ 			abort();
-+ 			return NULL;
-+ 		}
-+ 		s = gen_load_ll_after_802_11_rel(offset + 24, size);
-+ 		break;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+ 
-  	case OR_NET:
-  		s = gen_load_llrel(off_nl + offset, size);
-  		break;
-***************
-*** 2163,2173 ****
-  		break;
-  
-  	case DLT_PPI:
-  	case DLT_FDDI:
-  	case DLT_IEEE802:
-- 	case DLT_IEEE802_11:
-  	case DLT_IEEE802_11_RADIO_AVS:
-- 	case DLT_IEEE802_11_RADIO:
-  	case DLT_PRISM_HEADER:
-  	case DLT_ATM_RFC1483:
-  	case DLT_ATM_CLIP:
---- 2316,2332 ----
-  		break;
-  
-  	case DLT_PPI:
-+ 	case DLT_IEEE802_11_RADIO:
-+ 	case DLT_IEEE802_11:
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+ 		return gen_802_11_llc_linktype(proto);
-+ 		/*NOTREACHED*/
-+ 		break;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+ 
-  	case DLT_FDDI:
-  	case DLT_IEEE802:
-  	case DLT_IEEE802_11_RADIO_AVS:
-  	case DLT_PRISM_HEADER:
-  	case DLT_ATM_RFC1483:
-  	case DLT_ATM_CLIP:
-***************
-*** 2711,2716 ****
-  	}
-  }
-  
-  static struct block *
-  gen_hostop(addr, mask, dir, proto, src_off, dst_off)
-  	bpf_u_int32 addr;
---- 2870,2982 ----
-  	}
-  }
-  
-+ /*
-+  * Generate code to match a particular packet type, for link-layer types
-+  * using 802.2 LLC headers.
-+  *
-+  * This is *NOT* used for Ethernet; "gen_ether_linktype()" is used
-+  * for that - it handles the D/I/X Ethernet vs. 802.3+802.2 issues.
-+  *
-+  * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP
-+  * value, if <= ETHERMTU.  We use that to determine whether to
-+  * match the DSAP or both DSAP and LSAP or to check the OUI and
-+  * protocol ID in a SNAP header.
-+  */
-+ static struct block *
-+ gen_802_11_llc_linktype(proto)
-+ 	int proto;
-+ {
-+ 	struct block *b_check_data_frame;
-+ 	struct block *b_check_linktype;
-+ 
-+ 	b_check_data_frame = gen_check_802_11_data_frame();
-+ 
-+ 	/*
-+ 	 * XXX - generate the code that discards non data frames
-+ 	 */
-+ 	switch (proto) {
-+ 
-+ 	case LLCSAP_IP:
-+ 	case LLCSAP_ISONS:
-+ 	case LLCSAP_NETBEUI:
-+ 		/*
-+ 		 * XXX - should we check both the DSAP and the
-+ 		 * SSAP, like this, or should we check just the
-+ 		 * DSAP, as we do for other types <= ETHERMTU
-+ 		 * (i.e., other SAP values)?
-+ 		 */
-+ 		b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_H, (bpf_u_int32)
-+ 			     ((proto << 8) | proto));
-+ 		break;
-+ 
-+ 	case LLCSAP_IPX:
-+ 		/*
-+ 		 * XXX - are there ever SNAP frames for IPX on
-+ 		 * non-Ethernet 802.x networks?
-+ 		 */
-+ 		b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
-+ 		    (bpf_int32)LLCSAP_IPX);
-+ 
-+ 		break;
-+ 
-+ #if 0
-+ 	case ETHERTYPE_ATALK:
-+ 		/*
-+ 		 * 802.2-encapsulated ETHERTYPE_ATALK packets are
-+ 		 * SNAP packets with an organization code of
-+ 		 * 0x080007 (Apple, for Appletalk) and a protocol
-+ 		 * type of ETHERTYPE_ATALK (Appletalk).
-+ 		 *
-+ 		 * XXX - check for an organization code of
-+ 		 * encapsulated Ethernet as well?
-+ 		 */
-+ 		return gen_snap(0x080007, ETHERTYPE_ATALK, off_linktype);
-+ #endif
-+ 	default:
-+ 		/*
-+ 		 * XXX - we don't have to check for IPX 802.3
-+ 		 * here, but should we check for the IPX Ethertype?
-+ 		 */
-+ 		if (proto <= ETHERMTU) {
-+ 			/*
-+ 			 * This is an LLC SAP value, so check
-+ 			 * the DSAP.
-+ 			 */
-+ 			b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
-+ 			    (bpf_int32)proto);
-+ 		} else {
-+ 			/*
-+ 			 * This is an Ethernet type; we assume that it's
-+ 			 * unlikely that it'll appear in the right place
-+ 			 * at random, and therefore check only the
-+ 			 * location that would hold the Ethernet type
-+ 			 * in a SNAP frame with an organization code of
-+ 			 * 0x000000 (encapsulated Ethernet).
-+ 			 *
-+ 			 * XXX - if we were to check for the SNAP DSAP and
-+ 			 * LSAP, as per XXX, and were also to check for an
-+ 			 * organization code of 0x000000 (encapsulated
-+ 			 * Ethernet), we'd do
-+ 			 *
-+ 			 *	return gen_snap(0x000000, proto,
-+ 			 *	    off_linktype);
-+ 			 *
-+ 			 * here; for now, we don't, as per the above.
-+ 			 * I don't know whether it's worth the extra CPU
-+ 			 * time to do the right check or not.
-+ 			 */
-+ 			b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0+6, BPF_H,
-+ 			    (bpf_int32)proto);
-+ 		}
-+ 	}
-+ 
-+ 	gen_and(b_check_data_frame, b_check_linktype);
-+ 	return b_check_linktype;
-+ 
-+ }
-+ 
-+ 
-+ 
-  static struct block *
-  gen_hostop(addr, mask, dir, proto, src_off, dst_off)
-  	bpf_u_int32 addr;
-***************
-*** 2925,2930 ****
-  	register struct block *b0, *b1, *b2;
-  	register struct slist *s;
-  
-  	switch (dir) {
-  	case Q_SRC:
-  		/*
---- 3191,3207 ----
-  	register struct block *b0, *b1, *b2;
-  	register struct slist *s;
-  
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+ 	/*
-+ 	 * TODO GV 20070613
-+ 	 * We need to disable the optimizer because the optimizer is buggy
-+ 	 * and wipes out some LD instructions generated by the below
-+ 	 * code to validate the Frame Control bits
-+ 	 *
-+ 	 */
-+ 	no_optimize = 1;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+ 
-  	switch (dir) {
-  	case Q_SRC:
-  		/*
-***************
-*** 4713,4718 ****
-  #endif
-  }
-  
-  
-  /*
-   * Generate code that checks whether the packet is a packet for protocol
---- 4990,5021 ----
-  #endif
-  }
-  
-+ static struct block *
-+ gen_check_802_11_data_frame()
-+ {
-+ 	struct slist *s;
-+ 	struct block *b0, *b1;
-+ 	/*
-+ 	* Now check for a data frame.
-+ 	* I.e, check "link[0] & 0x08".
-+ 	*/
-+ 	s = gen_load_a(OR_LINK, 0, BPF_B);
-+ 	b0 = new_block(JMP(BPF_JSET));
-+ 	b0->s.k = 0x08;
-+ 	b0->stmts = s;
-+ 	
-+ 	s = gen_load_a(OR_LINK, 0, BPF_B);
-+ 	b1 = new_block(JMP(BPF_JSET));
-+ 	b1->s.k = 0x04;
-+ 	b1->stmts = s;
-+ 	gen_not(b1);
-+ 	
-+ 
-+ 	gen_and(b1, b0);
-+ 
-+ 	return b0;
-+ }
-+ 
-  
-  /*
-   * Generate code that checks whether the packet is a packet for protocol