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
|
/*-
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <asn_internal.h>
#include <BMPString.h>
#include <UTF8String.h>
/*
* BMPString basic type description.
*/
static ber_tlv_tag_t asn_DEF_BMPString_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (30 << 2)), /* [UNIVERSAL 30] IMPLICIT ...*/
(ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) /* ... OCTET STRING */
};
static asn_OCTET_STRING_specifics_t asn_DEF_BMPString_specs = {
sizeof(BMPString_t),
offsetof(BMPString_t, _asn_ctx),
ASN_OSUBV_U16 /* 16-bits character */
};
static asn_per_constraints_t asn_DEF_BMPString_constraints = {
{ APC_CONSTRAINED, 16, 16, 0, 65535 },
{ APC_SEMI_CONSTRAINED, -1, -1, 0, 0 },
0, 0
};
asn_TYPE_descriptor_t asn_DEF_BMPString = {
"BMPString",
"BMPString",
OCTET_STRING_free, /* Implemented in terms of OCTET STRING */
BMPString_print,
asn_generic_no_constraint, /* No constraint by default */
OCTET_STRING_decode_ber,
OCTET_STRING_encode_der,
BMPString_decode_xer, /* Convert from UTF-8 */
BMPString_encode_xer, /* Convert to UTF-8 */
OCTET_STRING_decode_uper,
OCTET_STRING_encode_uper,
0, /* Use generic outmost tag fetcher */
asn_DEF_BMPString_tags,
sizeof(asn_DEF_BMPString_tags)
/ sizeof(asn_DEF_BMPString_tags[0]) - 1,
asn_DEF_BMPString_tags,
sizeof(asn_DEF_BMPString_tags)
/ sizeof(asn_DEF_BMPString_tags[0]),
&asn_DEF_BMPString_constraints,
0, 0, /* No members */
&asn_DEF_BMPString_specs
};
/*
* BMPString specific contents printer.
*/
static ssize_t
BMPString__dump(const BMPString_t *st,
asn_app_consume_bytes_f *cb, void *app_key) {
char scratch[128]; /* Scratchpad buffer */
char *p = scratch;
ssize_t wrote = 0;
uint8_t *ch;
uint8_t *end;
ch = st->buf;
end = (st->buf + st->size);
for(end--; ch < end; ch += 2) {
uint16_t wc = (ch[0] << 8) | ch[1]; /* 2 bytes */
if(sizeof(scratch) - (p - scratch) < 3) {
wrote += p - scratch;
if(cb(scratch, p - scratch, app_key) < 0)
return -1;
p = scratch;
}
if(wc < 0x80) {
*p++ = (char)wc;
} else if(wc < 0x800) {
*p++ = 0xc0 | ((wc >> 6));
*p++ = 0x80 | ((wc & 0x3f));
} else {
*p++ = 0xe0 | ((wc >> 12));
*p++ = 0x80 | ((wc >> 6) & 0x3f);
*p++ = 0x80 | ((wc & 0x3f));
}
}
wrote += p - scratch;
if(cb(scratch, p - scratch, app_key) < 0)
return -1;
return wrote;
}
asn_dec_rval_t
BMPString_decode_xer(asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td, void **sptr,
const char *opt_mname, const void *buf_ptr, size_t size) {
asn_dec_rval_t rc;
rc = OCTET_STRING_decode_xer_utf8(opt_codec_ctx, td, sptr, opt_mname,
buf_ptr, size);
if(rc.code == RC_OK) {
/*
* Now we have a whole string in UTF-8 format.
* Convert it into UCS-2.
*/
uint32_t *wcs;
size_t wcs_len;
UTF8String_t *st;
assert(*sptr);
st = (UTF8String_t *)*sptr;
assert(st->buf);
wcs_len = UTF8String_to_wcs(st, 0, 0);
wcs = (uint32_t *)MALLOC(4 * (wcs_len + 1));
if(wcs == 0 || UTF8String_to_wcs(st, wcs, wcs_len) != wcs_len) {
rc.code = RC_FAIL;
rc.consumed = 0;
return rc;
} else {
wcs[wcs_len] = 0; /* nul-terminate */
}
if(1) {
/* Swap byte order and trim encoding to 2 bytes */
uint32_t *wc = wcs;
uint32_t *wc_end = wcs + wcs_len;
uint16_t *dstwc = (uint16_t *)wcs;
for(; wc < wc_end; wc++, dstwc++) {
uint32_t wch = *wc;
if(wch > 0xffff) {
FREEMEM(wcs);
rc.code = RC_FAIL;
rc.consumed = 0;
return rc;
}
*((uint8_t *)dstwc + 0) = wch >> 8;
*((uint8_t *)dstwc + 1) = wch;
}
dstwc = (uint16_t *)REALLOC(wcs, 2 * (wcs_len + 1));
if(!dstwc) {
FREEMEM(wcs);
rc.code = RC_FAIL;
rc.consumed = 0;
return rc;
} else {
dstwc[wcs_len] = 0; /* nul-terminate */
wcs = (uint32_t *)dstwc;
}
}
FREEMEM(st->buf);
st->buf = (uint8_t *)wcs;
st->size = 2 * wcs_len;
}
return rc;
}
asn_enc_rval_t
BMPString_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) {
const BMPString_t *st = (const BMPString_t *)sptr;
asn_enc_rval_t er;
(void)ilevel;
(void)flags;
if(!st || !st->buf)
_ASN_ENCODE_FAILED;
er.encoded = BMPString__dump(st, cb, app_key);
if(er.encoded < 0) _ASN_ENCODE_FAILED;
_ASN_ENCODED_OK(er);
}
int
BMPString_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
const BMPString_t *st = (const BMPString_t *)sptr;
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(!st || !st->buf)
return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
if(BMPString__dump(st, cb, app_key) < 0)
return -1;
return 0;
}
|
