481 lines
12 KiB
C
481 lines
12 KiB
C
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/* #line 1 "tsip_parser_message.rl" */
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/*
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* Copyright (C) 2009 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou@yahoo.fr>
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tsip_parser_message.c
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* @brief SIP parser.
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*
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* @author Mamadou Diop <diopmamadou(at)yahoo.fr>
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*
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* @date Created: Sat Nov 8 16:54:58 2009 mdiop
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*/
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#include "tinysip/parsers/tsip_parser_message.h"
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#include "tinysip/parsers/tsip_parser_header.h"
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#include "tinysip/parsers/tsip_parser_uri.h"
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#include "tsk_debug.h"
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#include "tsk_memory.h"
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static void tsip_message_parser_execute(tsk_ragel_state_t *state, tsip_message_t *message, TSIP_BOOLEAN extract_content);
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static void tsip_message_parser_init(tsk_ragel_state_t *state);
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static void tsip_message_parser_eoh(tsk_ragel_state_t *state, tsip_message_t *message, TSIP_BOOLEAN extract_content);
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/***********************************
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* Ragel state machine.
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*/
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/* #line 182 "tsip_parser_message.rl" */
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/* Regel data */
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/* #line 55 "../src/parsers/tsip_parser_message.c" */
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static const char _tsip_machine_parser_message_actions[] = {
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0, 1, 0, 1, 1, 1, 2, 1,
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3, 1, 4, 1, 5, 1, 6, 1,
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7, 2, 0, 5, 2, 6, 0
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};
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static const unsigned char _tsip_machine_parser_message_key_offsets[] = {
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0, 0, 16, 31, 35, 47, 50, 50,
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51, 53, 55, 57, 58, 60, 63, 65,
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68, 69, 70, 71, 72, 73, 74, 91,
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108, 122, 124, 127, 129, 132, 134, 136,
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138, 139, 165, 191, 193, 195, 197, 199,
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201, 207, 213
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};
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static const char _tsip_machine_parser_message_trans_keys[] = {
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33, 37, 39, 83, 115, 126, 42, 43,
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45, 46, 48, 57, 65, 90, 95, 122,
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32, 33, 37, 39, 126, 42, 43, 45,
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46, 48, 57, 65, 90, 95, 122, 65,
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90, 97, 122, 9, 32, 43, 58, 45,
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46, 48, 57, 65, 90, 97, 122, 9,
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32, 58, 32, 83, 115, 73, 105, 80,
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112, 47, 48, 57, 46, 48, 57, 48,
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57, 13, 48, 57, 10, 13, 13, 10,
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13, 10, 32, 33, 37, 39, 73, 105,
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126, 42, 43, 45, 46, 48, 57, 65,
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90, 95, 122, 32, 33, 37, 39, 80,
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112, 126, 42, 43, 45, 46, 48, 57,
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65, 90, 95, 122, 32, 33, 37, 39,
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47, 126, 42, 43, 45, 57, 65, 90,
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95, 122, 48, 57, 46, 48, 57, 48,
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57, 32, 48, 57, 48, 57, 48, 57,
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48, 57, 32, 13, 37, 60, 62, 96,
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127, -64, -33, -32, -17, -16, -9, -8,
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-5, -4, -3, -2, 8, 10, 31, 34,
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35, 91, 94, 123, 125, 13, 37, 60,
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62, 96, 127, -64, -33, -32, -17, -16,
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-9, -8, -5, -4, -3, -2, 8, 10,
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31, 34, 35, 91, 94, 123, 125, -128,
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-65, -128, -65, -128, -65, -128, -65, -128,
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-65, 48, 57, 65, 70, 97, 102, 48,
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57, 65, 70, 97, 102, 0
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};
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static const char _tsip_machine_parser_message_single_lengths[] = {
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0, 6, 5, 0, 4, 3, 0, 1,
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2, 2, 2, 1, 0, 1, 0, 1,
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1, 1, 1, 1, 1, 1, 7, 7,
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6, 0, 1, 0, 1, 0, 0, 0,
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1, 6, 6, 0, 0, 0, 0, 0,
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0, 0, 0
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};
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static const char _tsip_machine_parser_message_range_lengths[] = {
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0, 5, 5, 2, 4, 0, 0, 0,
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0, 0, 0, 0, 1, 1, 1, 1,
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0, 0, 0, 0, 0, 0, 5, 5,
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4, 1, 1, 1, 1, 1, 1, 1,
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0, 10, 10, 1, 1, 1, 1, 1,
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3, 3, 0
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};
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static const unsigned char _tsip_machine_parser_message_index_offsets[] = {
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0, 0, 12, 23, 26, 35, 39, 40,
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42, 45, 48, 51, 53, 55, 58, 60,
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63, 65, 67, 69, 71, 73, 75, 88,
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101, 112, 114, 117, 119, 122, 124, 126,
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128, 130, 147, 164, 166, 168, 170, 172,
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174, 178, 182
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};
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static const char _tsip_machine_parser_message_indicies[] = {
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0, 0, 0, 2, 2, 0, 0, 0,
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0, 0, 0, 1, 3, 4, 4, 4,
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4, 4, 4, 4, 4, 4, 1, 5,
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5, 1, 6, 6, 7, 8, 7, 7,
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7, 7, 1, 6, 6, 8, 1, 9,
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10, 9, 11, 11, 1, 12, 12, 1,
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13, 13, 1, 14, 1, 15, 1, 16,
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15, 1, 17, 1, 18, 17, 1, 19,
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1, 21, 20, 23, 22, 24, 1, 26,
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25, 27, 1, 3, 4, 4, 4, 28,
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28, 4, 4, 4, 4, 4, 4, 1,
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3, 4, 4, 4, 29, 29, 4, 4,
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4, 4, 4, 4, 1, 3, 4, 4,
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4, 30, 4, 4, 4, 4, 4, 1,
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31, 1, 32, 31, 1, 33, 1, 34,
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33, 1, 35, 1, 36, 1, 37, 1,
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38, 1, 45, 46, 1, 1, 1, 1,
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40, 41, 42, 43, 44, 1, 1, 1,
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1, 1, 39, 53, 54, 1, 1, 1,
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1, 48, 49, 50, 51, 52, 1, 1,
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1, 1, 1, 47, 47, 1, 48, 1,
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49, 1, 50, 1, 51, 1, 55, 55,
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55, 1, 47, 47, 47, 1, 56, 0
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};
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static const char _tsip_machine_parser_message_trans_targs[] = {
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2, 0, 22, 3, 2, 4, 5, 4,
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6, 7, 8, 9, 10, 11, 12, 13,
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14, 15, 16, 17, 18, 21, 18, 19,
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20, 18, 21, 42, 23, 24, 25, 26,
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27, 28, 29, 30, 31, 32, 33, 34,
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35, 36, 37, 38, 39, 16, 40, 34,
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35, 36, 37, 38, 39, 16, 40, 41,
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42
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};
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static const char _tsip_machine_parser_message_trans_actions[] = {
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1, 0, 1, 3, 0, 1, 0, 0,
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0, 0, 5, 1, 0, 0, 0, 0,
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0, 0, 7, 0, 1, 0, 0, 0,
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0, 20, 13, 15, 0, 0, 0, 0,
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0, 0, 7, 1, 0, 0, 9, 1,
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1, 1, 1, 1, 1, 17, 1, 0,
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0, 0, 0, 0, 0, 11, 0, 0,
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0
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};
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static const int tsip_machine_parser_message_start = 1;
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static const int tsip_machine_parser_message_first_final = 42;
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static const int tsip_machine_parser_message_error = 0;
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static const int tsip_machine_parser_message_en_main = 1;
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/* #line 187 "tsip_parser_message.rl" */
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TSIP_BOOLEAN tsip_message_parse(tsk_ragel_state_t *state, tsip_message_t **result, TSIP_BOOLEAN extract_content)
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{
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if(!state || state->pe <= state->p){
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return TSIP_FALSE;
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}
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if(!*result){
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*result = TSIP_MESSAGE_CREATE();
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}
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/* Ragel init */
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tsip_message_parser_init(state);
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/*
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* State mechine execution.
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*/
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tsip_message_parser_execute(state, *result, extract_content);
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/* Check result */
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if( state->cs <
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/* #line 207 "../src/parsers/tsip_parser_message.c" */
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42
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/* #line 209 "tsip_parser_message.rl" */
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)
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{
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TSK_OBJECT_SAFE_FREE(*result);
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return TSIP_FALSE;
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}
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return TSIP_TRUE;
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}
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static void tsip_message_parser_init(tsk_ragel_state_t *state)
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{
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int cs = 0;
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/* Regel machine initialization. */
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/* #line 225 "../src/parsers/tsip_parser_message.c" */
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{
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cs = tsip_machine_parser_message_start;
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}
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/* #line 224 "tsip_parser_message.rl" */
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state->cs = cs;
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}
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static void tsip_message_parser_execute(tsk_ragel_state_t *state, tsip_message_t *message, TSIP_BOOLEAN extract_content)
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{
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int cs = state->cs;
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const char *p = state->p;
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const char *pe = state->pe;
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const char *eof = state->eof;
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/* #line 243 "../src/parsers/tsip_parser_message.c" */
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{
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int _klen;
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unsigned int _trans;
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const char *_acts;
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unsigned int _nacts;
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const char *_keys;
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if ( p == pe )
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goto _test_eof;
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if ( cs == 0 )
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goto _out;
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_resume:
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_keys = _tsip_machine_parser_message_trans_keys + _tsip_machine_parser_message_key_offsets[cs];
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_trans = _tsip_machine_parser_message_index_offsets[cs];
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_klen = _tsip_machine_parser_message_single_lengths[cs];
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if ( _klen > 0 ) {
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const char *_lower = _keys;
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const char *_mid;
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const char *_upper = _keys + _klen - 1;
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while (1) {
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if ( _upper < _lower )
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break;
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_mid = _lower + ((_upper-_lower) >> 1);
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if ( (*p) < *_mid )
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_upper = _mid - 1;
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else if ( (*p) > *_mid )
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_lower = _mid + 1;
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else {
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_trans += (_mid - _keys);
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goto _match;
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}
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}
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_keys += _klen;
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_trans += _klen;
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}
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_klen = _tsip_machine_parser_message_range_lengths[cs];
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if ( _klen > 0 ) {
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const char *_lower = _keys;
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const char *_mid;
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const char *_upper = _keys + (_klen<<1) - 2;
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while (1) {
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if ( _upper < _lower )
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break;
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_mid = _lower + (((_upper-_lower) >> 1) & ~1);
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if ( (*p) < _mid[0] )
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_upper = _mid - 2;
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else if ( (*p) > _mid[1] )
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_lower = _mid + 2;
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else {
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_trans += ((_mid - _keys)>>1);
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goto _match;
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}
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}
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_trans += _klen;
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}
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_match:
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_trans = _tsip_machine_parser_message_indicies[_trans];
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cs = _tsip_machine_parser_message_trans_targs[_trans];
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if ( _tsip_machine_parser_message_trans_actions[_trans] == 0 )
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goto _again;
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_acts = _tsip_machine_parser_message_actions + _tsip_machine_parser_message_trans_actions[_trans];
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_nacts = (unsigned int) *_acts++;
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while ( _nacts-- > 0 )
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{
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switch ( *_acts++ )
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{
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case 0:
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/* #line 50 "tsip_parser_message.rl" */
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{
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state->tag_start = p;
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}
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break;
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case 1:
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/* #line 56 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(message->type == tsip_unknown)
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{
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message->type = tsip_request;
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if(!message->method)
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{
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message->method = tsk_calloc(1, len+1);
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memcpy(message->method, state->tag_start, len);
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message->request_type = tsip_request_get_type(message->method);
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}
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}
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else
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{
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state->cs = tsip_machine_parser_message_error;
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}
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}
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break;
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case 2:
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/* #line 79 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(!message->uri)
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{
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message->uri = tsip_uri_parse(state->tag_start, (size_t)len);
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}
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}
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break;
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case 3:
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/* #line 92 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(!message->sip_version)
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{
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message->sip_version = tsk_calloc(1, len+1);
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memcpy(message->sip_version, state->tag_start, len);
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}
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}
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break;
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case 4:
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/* #line 106 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(message->type == tsip_unknown)
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{
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message->type = tsip_response;
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message->status_code = atoi(state->tag_start);
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}
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else
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{
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state->cs = tsip_machine_parser_message_error;
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}
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}
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break;
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case 5:
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/* #line 124 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(!message->reason_phrase)
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{
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message->reason_phrase = tsk_calloc(1, len+1);
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memcpy(message->reason_phrase, state->tag_start, len);
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}
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}
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break;
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case 6:
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/* #line 138 "tsip_parser_message.rl" */
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{
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int len;
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state->tag_end = p;
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len = (int)(state->tag_end - state->tag_start);
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if(tsip_header_parse(state, message)){
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//TSK_DEBUG_INFO("TSIP_MESSAGE_PARSER::PARSE_HEADER len=%d state=%d", len, state->cs);
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}
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else{
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TSK_DEBUG_ERROR("Failed to parse header - %s", state->tag_start);
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}
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}
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break;
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case 7:
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/* #line 162 "tsip_parser_message.rl" */
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{
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state->cs = cs;
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state->p = p;
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state->pe = pe;
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state->eof = eof;
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tsip_message_parser_eoh(state, message, extract_content);
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cs = state->cs;
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p = state->p;
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pe = state->pe;
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eof = state->eof;
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}
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break;
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/* #line 436 "../src/parsers/tsip_parser_message.c" */
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}
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}
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_again:
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if ( cs == 0 )
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goto _out;
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if ( ++p != pe )
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goto _resume;
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_test_eof: {}
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_out: {}
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}
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/* #line 236 "tsip_parser_message.rl" */
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state->cs = cs;
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state->p = p;
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state->pe = pe;
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state->eof = eof;
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}
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static void tsip_message_parser_eoh(tsk_ragel_state_t *state, tsip_message_t *message, TSIP_BOOLEAN extract_content)
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{
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int cs = state->cs;
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const char *p = state->p;
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const char *pe = state->pe;
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const char *eof = state->eof;
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if(extract_content && message)
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{
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uint32_t clen = TSIP_MESSAGE_CONTENT_LENGTH(message);
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if((p+clen) <pe && !message->Content){
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message->Content = TSK_BUFFER_CREATE((p+1), clen);
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p = (p+clen);
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}
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else{
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p = (pe-1);
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}
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}
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//%%write eof;
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state->cs = cs;
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state->p = p;
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state->pe = pe;
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state->eof = eof;
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}
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