aboutsummaryrefslogtreecommitdiffstats
path: root/src/ANY.c
blob: 0ad60d0a08dd3919170ba815cbbeada7cbbb1a16 (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
/*-
 * Copyright (c) 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
 * Redistribution and modifications are permitted subject to BSD license.
 */
#include <asn_internal.h>
#include <ANY.h>
#include <errno.h>

static asn_OCTET_STRING_specifics_t asn_DEF_ANY_specs = {
	sizeof(ANY_t),
	offsetof(ANY_t, _asn_ctx),
	ASN_OSUBV_ANY
};
asn_TYPE_descriptor_t asn_DEF_ANY = {
	"ANY",
	"ANY",
	OCTET_STRING_free,
	OCTET_STRING_print,
	asn_generic_no_constraint,
	OCTET_STRING_decode_ber,
	OCTET_STRING_encode_der,
	OCTET_STRING_decode_xer_hex,
	ANY_encode_xer,
	0, 0,
	0, /* Use generic outmost tag fetcher */
	0, 0, 0, 0,
	0,	/* No PER visible constraints */
	0, 0,	/* No members */
	&asn_DEF_ANY_specs,
};


asn_enc_rval_t
ANY_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
	int ilevel, enum xer_encoder_flags_e flags,
		asn_app_consume_bytes_f *cb, void *app_key) {

	if(flags & XER_F_CANONICAL) {
		/*
		 * Canonical XER-encoding of ANY type is not supported.
		 */
		_ASN_ENCODE_FAILED;
	}

	/* Dump as binary */
	return OCTET_STRING_encode_xer(td, sptr, ilevel, flags, cb, app_key);
}

struct _callback_arg {
	uint8_t *buffer;
	size_t offset;
	size_t size;
};

static int ANY__consume_bytes(const void *buffer, size_t size, void *key);

int
ANY_fromType(ANY_t *st, asn_TYPE_descriptor_t *td, void *sptr) {
	struct _callback_arg arg;
	asn_enc_rval_t erval;

	if(!st || !td) {
		errno = EINVAL;
		return -1;
	}

	if(!sptr) {
		if(st->buf) FREEMEM(st->buf);
		st->size = 0;
		return 0;
	}

	arg.offset = arg.size = 0;
	arg.buffer = 0;

	erval = der_encode(td, sptr, ANY__consume_bytes, &arg);
	if(erval.encoded == -1) {
		if(arg.buffer) FREEMEM(arg.buffer);
		return -1;
	}
	assert((size_t)erval.encoded == arg.offset);

	if(st->buf) FREEMEM(st->buf);
	st->buf = arg.buffer;
	st->size = arg.offset;

	return 0;
}

ANY_t *
ANY_new_fromType(asn_TYPE_descriptor_t *td, void *sptr) {
	ANY_t tmp;
	ANY_t *st;

	if(!td || !sptr) {
		errno = EINVAL;
		return 0;
	}

	memset(&tmp, 0, sizeof(tmp));

	if(ANY_fromType(&tmp, td, sptr)) return 0;

	st = (ANY_t *)CALLOC(1, sizeof(ANY_t));
	if(st) {
		*st = tmp;
		return st;
	} else {
		FREEMEM(tmp.buf);
		return 0;
	}
}

int
ANY_to_type(ANY_t *st, asn_TYPE_descriptor_t *td, void **struct_ptr) {
	asn_dec_rval_t rval;
	void *newst = 0;

	if(!st || !td || !struct_ptr) {
		errno = EINVAL;
		return -1;
	}

	if(st->buf == 0) {
		/* Nothing to convert, make it empty. */
		*struct_ptr = (void *)0;
		return 0;
	}

	rval = ber_decode(0, td, (void **)&newst, st->buf, st->size);
	if(rval.code == RC_OK) {
		*struct_ptr = newst;
		return 0;
	} else {
		/* Remove possibly partially decoded data. */
		ASN_STRUCT_FREE(*td, newst);
		return -1;
	}
}

static int ANY__consume_bytes(const void *buffer, size_t size, void *key) {
	struct _callback_arg *arg = (struct _callback_arg *)key;

	if((arg->offset + size) >= arg->size) {
		size_t nsize = (arg->size ? arg->size << 2 : 16) + size;
		void *p = REALLOC(arg->buffer, nsize);
		if(!p) return -1;
		arg->buffer = (uint8_t *)p;
		arg->size = nsize;
	}

	memcpy(arg->buffer + arg->offset, buffer, size);
	arg->offset += size;
	assert(arg->offset < arg->size);

	return 0;
}