Commit | Line | Data |
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92a7d254 IJ |
1 | |
2 | #ifndef TRANSFORM_COMMON_H | |
3 | #define TRANSFORM_COMMON_H | |
4 | ||
5 | #define KEYED_CHECK do{ \ | |
6 | if (!ti->keyed) { \ | |
7 | *errmsg="transform unkeyed"; \ | |
8 | return 1; \ | |
9 | } \ | |
10 | }while(0) | |
11 | ||
12 | #define SEQNUM_CHECK(seqnum, max_skew) do{ \ | |
13 | uint32_t skew=seqnum-ti->lastrecvseq; \ | |
14 | if (skew<0x8fffffff) { \ | |
15 | /* Ok */ \ | |
16 | ti->lastrecvseq=seqnum; \ | |
17 | } else if ((0-skew)<max_skew) { \ | |
18 | /* Ok */ \ | |
19 | } else { \ | |
20 | /* Too much skew */ \ | |
21 | *errmsg="seqnum: too much skew"; \ | |
22 | return 2; \ | |
23 | } \ | |
24 | }while(0) | |
25 | ||
26 | #define TRANSFORM_VALID \ | |
27 | static bool_t transform_valid(void *sst) \ | |
28 | { \ | |
29 | struct transform_inst *ti=sst; \ | |
30 | \ | |
31 | return ti->keyed; \ | |
32 | } | |
33 | ||
34 | #define TRANSFORM_DESTROY \ | |
35 | static void transform_destroy(void *sst) \ | |
36 | { \ | |
37 | struct transform_inst *st=sst; \ | |
38 | \ | |
39 | FILLZERO(*st); /* Destroy key material */ \ | |
40 | free(st); \ | |
41 | } | |
42 | ||
43 | #define TRANSFORM_CREATE_CORE \ | |
44 | struct transform_inst *ti; \ | |
45 | ti=safe_malloc(sizeof(*ti),"transform_create"); \ | |
46 | /* mlock XXX */ \ | |
47 | ti->ops.st=ti; \ | |
48 | ti->ops.setkey=transform_setkey; \ | |
49 | ti->ops.valid=transform_valid; \ | |
50 | ti->ops.delkey=transform_delkey; \ | |
51 | ti->ops.forwards=transform_forward; \ | |
52 | ti->ops.reverse=transform_reverse; \ | |
53 | ti->ops.destroy=transform_destroy; \ | |
54 | ti->keyed=False; | |
55 | ||
56 | #endif /*TRANSFORM_COMMON_H*/ |