summaryrefslogtreecommitdiffstats
path: root/tinySIP/ragel/tsip_parser_header_From.rl
blob: 09c1588e4670eb7f61d68824c84c01c94cd96130 (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
/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
*	
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*	
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*	
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/

/**@file tsip_header_From.c
 * @brief SIP From/f header as per RFC 3261 subclause 20.20.
 *
 * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
 *

 */
#include "tinysip/headers/tsip_header_From.h"

#include "tinysip/parsers/tsip_parser_uri.h"

#include "tsk_debug.h"
#include "tsk_memory.h"



/***********************************
*	Ragel state machine.
*/
%%{
	machine tsip_machine_parser_header_From;

	# Includes
	include tsip_machine_utils "./ragel/tsip_machine_utils.rl";
	
	action tag{
		tag_start = p;
	}
	
	action parse_uri{
		int len = (int)(p  - tag_start);
		if(hdr_from && !hdr_from->uri){
			if((hdr_from->uri = tsip_uri_parse(tag_start, (tsk_size_t)len)) && hdr_from->display_name){
				hdr_from->uri->display_name = tsk_strdup(hdr_from->display_name);
			}
		}
	}

	action parse_display_name{
		TSK_PARSER_SET_STRING(hdr_from->display_name);
		tsk_strunquote(&hdr_from->display_name);
	}

	action parse_tag{
		TSK_PARSER_SET_STRING(hdr_from->tag);
	}

	action parse_param{
		TSK_PARSER_ADD_PARAM(TSIP_HEADER_PARAMS(hdr_from));
	}

	action eob{
	}

	URI = (scheme HCOLON any+)>tag %parse_uri;
	display_name = (( token LWS )+ | quoted_string)>tag %parse_display_name;
	my_name_addr = display_name? :>LAQUOT<: URI :>RAQUOT;
	my_tag_param = "tag"i EQUAL token>tag %parse_tag;
	from_param = (my_tag_param)@1 | (generic_param)@0 >tag %parse_param;
	from_spec = ( my_name_addr | URI ) :> ( SEMI from_param )*;
	
	From = ( "From"i | "f"i ) HCOLON from_spec;
	
	# Entry point
	main := From :>CRLF @eob;

}%%


tsip_header_From_t* tsip_header_From_create(const char* display_name, const tsip_uri_t* uri, const char* tag)
{
	return tsk_object_new(TSIP_HEADER_FROM_VA_ARGS(display_name, uri, tag));
}

int tsip_header_From_serialize(const tsip_header_t* header, tsk_buffer_t* output)
{
	int ret = -1;
	if(header){
		const tsip_header_From_t *From = (const tsip_header_From_t *)header;

		/* Uri with hacked display-name*/
		if((ret = tsip_uri_serialize(From->uri, tsk_true, tsk_true, output))){
			return ret;
		}
		if(From->tag){
			ret = tsk_buffer_append_2(output, ";tag=%s", From->tag);
		}
	}
	return ret;
}

tsip_header_From_t *tsip_header_From_parse(const char *data, tsk_size_t size)
{
	int cs = 0;
	const char *p = data;
	const char *pe = p + size;
	const char *eof = pe;
	tsip_header_From_t *hdr_from = tsip_header_From_create(tsk_null, tsk_null, tsk_null);
	
	const char *tag_start = tsk_null;

	%%write data;
	(void)(eof);
	(void)(tsip_machine_parser_header_From_first_final);
	(void)(tsip_machine_parser_header_From_error);
	(void)(tsip_machine_parser_header_From_en_main);
	%%write init;
	%%write exec;
	
	if( cs < %%{ write first_final; }%% ){
		TSK_DEBUG_ERROR("Failed to parse 'From' header.");
		TSK_OBJECT_SAFE_FREE(hdr_from);
	}
	
	return hdr_from;
}







//========================================================
//	From header object definition
//

static tsk_object_t* tsip_header_From_ctor(tsk_object_t *self, va_list * app)
{
	tsip_header_From_t *From = self;
	if(From){
		const char* display_name = va_arg(*app, const char *);
		const tsip_uri_t* uri = va_arg(*app, const tsip_uri_t *);
		const char* tag = va_arg(*app, const char *);

		From->display_name = tsk_strdup(display_name);
		if(uri) From->uri = tsk_object_ref((void *)uri);
		From->tag = tsk_strdup(tag);

		TSIP_HEADER(From)->type = tsip_htype_From;
		TSIP_HEADER(From)->serialize = tsip_header_From_serialize;
	}
	else{
		TSK_DEBUG_ERROR("Failed to create new From header.");
	}
	return self;
}

static tsk_object_t* tsip_header_From_dtor(tsk_object_t *self)
{
	tsip_header_From_t *From = self;
	if(From){
		TSK_FREE(From->display_name);
		TSK_FREE(From->tag);

		TSK_OBJECT_SAFE_FREE(From->uri);
		TSK_OBJECT_SAFE_FREE(TSIP_HEADER_PARAMS(From));
	}
	else{
		TSK_DEBUG_ERROR("Null From header.");
	}

	return self;
}

static const tsk_object_def_t tsip_header_From_def_s = 
{
	sizeof(tsip_header_From_t),
	tsip_header_From_ctor,
	tsip_header_From_dtor,
	tsk_null
};
const tsk_object_def_t *tsip_header_From_def_t = &tsip_header_From_def_s;

OpenPOWER on IntegriCloud