File: rose_other.c

package info (click to toggle)
libpri 1.6.0-1
  • links: PTS, VCS
  • area: main
  • in suites: buster, sid
  • size: 2,696 kB
  • sloc: ansic: 39,045; makefile: 159; sh: 66
file content (277 lines) | stat: -rw-r--r-- 9,663 bytes parent folder | download | duplicates (4)
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
/*
 * libpri: An implementation of Primary Rate ISDN
 *
 * Copyright (C) 2009 Digium, Inc.
 *
 * Richard Mudgett <rmudgett@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2 as published by the
 * Free Software Foundation. See the LICENSE file included with
 * this program for more details.
 *
 * In addition, when this program is distributed with Asterisk in
 * any form that would qualify as a 'combined work' or as a
 * 'derivative work' (but not mere aggregation), you can redistribute
 * and/or modify the combination under the terms of the license
 * provided with that copy of Asterisk, instead of the license
 * terms granted here.
 */

/*!
 * \file
 * \brief Switch type operations for:  NI2, 4ESS, 5ESS, DMS-100
 *
 * \author Richard Mudgett <rmudgett@digium.com>
 */


#include "compat.h"
#include "libpri.h"
#include "pri_internal.h"
#include "rose.h"
#include "rose_internal.h"
#include "asn1.h"


/* ------------------------------------------------------------------- */

/*!
 * \brief Encode the DMS-100 RLT_OperationInd result facility ie arguments.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param pos Starting position to encode ASN.1 component.
 * \param end End of ASN.1 encoding data buffer.
 * \param args Arguments to encode in the buffer.
 *
 * \retval Start of the next ASN.1 component to encode on success.
 * \retval NULL on error.
 */
unsigned char *rose_enc_dms100_RLT_OperationInd_RES(struct pri *ctrl, unsigned char *pos,
	unsigned char *end, const union rose_msg_result_args *args)
{
	return asn1_enc_int(pos, end, ASN1_CLASS_CONTEXT_SPECIFIC | 0,
		args->dms100.RLT_OperationInd.call_id);
}

/*!
 * \brief Encode the DMS-100 RLT_ThirdParty invoke facility ie arguments.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param pos Starting position to encode ASN.1 component.
 * \param end End of ASN.1 encoding data buffer.
 * \param args Arguments to encode in the buffer.
 *
 * \retval Start of the next ASN.1 component to encode on success.
 * \retval NULL on error.
 */
unsigned char *rose_enc_dms100_RLT_ThirdParty_ARG(struct pri *ctrl, unsigned char *pos,
	unsigned char *end, const union rose_msg_invoke_args *args)
{
	const struct roseDms100RLTThirdParty_ARG *rlt_thirdparty;
	unsigned char *seq_len;

	ASN1_CONSTRUCTED_BEGIN(seq_len, pos, end, ASN1_TAG_SEQUENCE);

	rlt_thirdparty = &args->dms100.RLT_ThirdParty;
	ASN1_CALL(pos, asn1_enc_int(pos, end, ASN1_CLASS_CONTEXT_SPECIFIC | 0,
		rlt_thirdparty->call_id));
	ASN1_CALL(pos, asn1_enc_int(pos, end, ASN1_CLASS_CONTEXT_SPECIFIC | 1,
		rlt_thirdparty->reason));

	ASN1_CONSTRUCTED_END(seq_len, pos, end);

	return pos;
}

/*!
 * \brief Decode the DMS-100 RLT_OperationInd result argument parameters.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param tag Component tag that identified this structure.
 * \param pos Starting position of the ASN.1 component length.
 * \param end End of ASN.1 decoding data buffer.
 * \param args Arguments to fill in from the decoded buffer.
 *
 * \retval Start of the next ASN.1 component on success.
 * \retval NULL on error.
 */
const unsigned char *rose_dec_dms100_RLT_OperationInd_RES(struct pri *ctrl, unsigned tag,
	const unsigned char *pos, const unsigned char *end, union rose_msg_result_args *args)
{
	int32_t value;

	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_CLASS_CONTEXT_SPECIFIC | 0);
	ASN1_CALL(pos, asn1_dec_int(ctrl, "callId", tag, pos, end, &value));
	args->dms100.RLT_OperationInd.call_id = value;

	return pos;
}

/*!
 * \brief Decode the DMS-100 RLT_ThirdParty invoke argument parameters.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param tag Component tag that identified this structure.
 * \param pos Starting position of the ASN.1 component length.
 * \param end End of ASN.1 decoding data buffer.
 * \param args Arguments to fill in from the decoded buffer.
 *
 * \retval Start of the next ASN.1 component on success.
 * \retval NULL on error.
 */
const unsigned char *rose_dec_dms100_RLT_ThirdParty_ARG(struct pri *ctrl, unsigned tag,
	const unsigned char *pos, const unsigned char *end, union rose_msg_invoke_args *args)
{
	int32_t value;
	int length;
	int seq_offset;
	const unsigned char *seq_end;
	struct roseDms100RLTThirdParty_ARG *rlt_third_party;

	rlt_third_party = &args->dms100.RLT_ThirdParty;

	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_TAG_SEQUENCE);
	if (ctrl->debug & PRI_DEBUG_APDU) {
		pri_message(ctrl, "  RLT_ThirdParty %s\n", asn1_tag2str(tag));
	}
	ASN1_CALL(pos, asn1_dec_length(pos, end, &length));
	ASN1_END_SETUP(seq_end, seq_offset, length, pos, end);

	ASN1_CALL(pos, asn1_dec_tag(pos, seq_end, &tag));
	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_CLASS_CONTEXT_SPECIFIC | 0);
	ASN1_CALL(pos, asn1_dec_int(ctrl, "callId", tag, pos, seq_end, &value));
	rlt_third_party->call_id = value;

	ASN1_CALL(pos, asn1_dec_tag(pos, seq_end, &tag));
	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_CLASS_CONTEXT_SPECIFIC | 1);
	ASN1_CALL(pos, asn1_dec_int(ctrl, "reason", tag, pos, seq_end, &value));
	rlt_third_party->reason = value;

	/* Fixup will skip over any OPTIONAL information */
	ASN1_END_FIXUP(ctrl, pos, seq_offset, seq_end, end);

	return pos;
}

/*!
 * \brief Encode the NI2 InformationFollowing invoke facility ie arguments.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param pos Starting position to encode ASN.1 component.
 * \param end End of ASN.1 encoding data buffer.
 * \param args Arguments to encode in the buffer.
 *
 * \retval Start of the next ASN.1 component to encode on success.
 * \retval NULL on error.
 */
unsigned char *rose_enc_ni2_InformationFollowing_ARG(struct pri *ctrl,
	unsigned char *pos, unsigned char *end, const union rose_msg_invoke_args *args)
{
	/* Encode the unknown enumeration value. */
	return asn1_enc_int(pos, end, ASN1_TYPE_ENUMERATED,
		args->ni2.InformationFollowing.value);
}

/*!
 * \brief Encode the NI2 InitiateTransfer invoke facility ie arguments.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param pos Starting position to encode ASN.1 component.
 * \param end End of ASN.1 encoding data buffer.
 * \param args Arguments to encode in the buffer.
 *
 * \retval Start of the next ASN.1 component to encode on success.
 * \retval NULL on error.
 */
unsigned char *rose_enc_ni2_InitiateTransfer_ARG(struct pri *ctrl, unsigned char *pos,
	unsigned char *end, const union rose_msg_invoke_args *args)
{
	const struct roseNi2InitiateTransfer_ARG *initiate_transfer;
	unsigned char *seq_len;

	ASN1_CONSTRUCTED_BEGIN(seq_len, pos, end, ASN1_TAG_SEQUENCE);

	initiate_transfer = &args->ni2.InitiateTransfer;
	ASN1_CALL(pos, asn1_enc_int(pos, end, ASN1_TYPE_INTEGER,
		initiate_transfer->call_reference));

	ASN1_CONSTRUCTED_END(seq_len, pos, end);

	return pos;
}

/*!
 * \brief Decode the NI2 InformationFollowing invoke argument parameters.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param tag Component tag that identified this structure.
 * \param pos Starting position of the ASN.1 component length.
 * \param end End of ASN.1 decoding data buffer.
 * \param args Arguments to fill in from the decoded buffer.
 *
 * \retval Start of the next ASN.1 component on success.
 * \retval NULL on error.
 */
const unsigned char *rose_dec_ni2_InformationFollowing_ARG(struct pri *ctrl,
	unsigned tag, const unsigned char *pos, const unsigned char *end,
	union rose_msg_invoke_args *args)
{
	int32_t value;

	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_TYPE_ENUMERATED);
	ASN1_CALL(pos, asn1_dec_int(ctrl, "unknown", tag, pos, end, &value));
	args->ni2.InformationFollowing.value = value;

	return pos;
}

/*!
 * \brief Decode the NI2 InitiateTransfer invoke argument parameters.
 *
 * \param ctrl D channel controller for diagnostic messages or global options.
 * \param tag Component tag that identified this structure.
 * \param pos Starting position of the ASN.1 component length.
 * \param end End of ASN.1 decoding data buffer.
 * \param args Arguments to fill in from the decoded buffer.
 *
 * \retval Start of the next ASN.1 component on success.
 * \retval NULL on error.
 */
const unsigned char *rose_dec_ni2_InitiateTransfer_ARG(struct pri *ctrl, unsigned tag,
	const unsigned char *pos, const unsigned char *end, union rose_msg_invoke_args *args)
{
	int32_t value;
	int length;
	int seq_offset;
	const unsigned char *seq_end;
	struct roseNi2InitiateTransfer_ARG *initiate_transfer;

	initiate_transfer = &args->ni2.InitiateTransfer;

	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_TAG_SEQUENCE);
	if (ctrl->debug & PRI_DEBUG_APDU) {
		pri_message(ctrl, "  InitiateTransfer %s\n", asn1_tag2str(tag));
	}
	ASN1_CALL(pos, asn1_dec_length(pos, end, &length));
	ASN1_END_SETUP(seq_end, seq_offset, length, pos, end);

	ASN1_CALL(pos, asn1_dec_tag(pos, seq_end, &tag));
	ASN1_CHECK_TAG(ctrl, tag, tag, ASN1_TYPE_INTEGER);
	ASN1_CALL(pos, asn1_dec_int(ctrl, "callReference", tag, pos, seq_end, &value));
	initiate_transfer->call_reference = value;

	/* Fixup will skip over any OPTIONAL information */
	ASN1_END_FIXUP(ctrl, pos, seq_offset, seq_end, end);

	return pos;
}

/* ------------------------------------------------------------------- */
/* end rose_other.c */