540 lines
16 KiB
C
Executable File
540 lines
16 KiB
C
Executable File
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/* #line 1 "./ragel/tsip_parser_message.rl" */
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/*
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* Copyright (C) 2010-2011 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
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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)doubango[dot]org>
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*
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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, tsk_bool_t 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, tsk_bool_t extract_content);
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// Check if we have ",CRLF" ==> See WWW-Authenticate header
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// As :>CRLF is preceded by any+ ==> p will be at least (start + 1)
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// p point to CR
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#define prev_not_comma(p) !(p && p[-1] == ',')
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/***********************************
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* Ragel state machine.
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*/
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/* #line 187 "./ragel/tsip_parser_message.rl" */
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/* Regel data */
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/* #line 60 "./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 char _tsip_machine_parser_message_cond_offsets[] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2
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};
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static const char _tsip_machine_parser_message_cond_lengths[] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 1, 1, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0
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};
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static const short _tsip_machine_parser_message_cond_keys[] = {
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13, 13, 10, 10, 0
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};
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static const char _tsip_machine_parser_message_cond_spaces[] = {
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0, 0, 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, 76, 77, 78, 79, 96,
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113, 127, 129, 132, 134, 137, 139, 141,
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143, 144, 160, 176, 182, 188
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};
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static const short _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, 269, 525,
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-128, 12, 14, 127, 522, 13, 10, 32,
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33, 37, 39, 73, 105, 126, 42, 43,
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45, 46, 48, 57, 65, 90, 95, 122,
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32, 33, 37, 39, 80, 112, 126, 42,
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43, 45, 46, 48, 57, 65, 90, 95,
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122, 32, 33, 37, 39, 47, 126, 42,
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43, 45, 57, 65, 90, 95, 122, 48,
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57, 46, 48, 57, 48, 57, 32, 48,
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57, 48, 57, 48, 57, 48, 57, 32,
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13, 37, 60, 62, 96, 127, 0, 8,
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10, 31, 34, 35, 91, 94, 123, 125,
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13, 37, 60, 62, 96, 127, 0, 8,
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10, 31, 34, 35, 91, 94, 123, 125,
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48, 57, 65, 70, 97, 102, 48, 57,
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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, 2, 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
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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, 2, 0, 0, 0, 5, 5,
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4, 1, 1, 1, 1, 1, 1, 1,
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0, 5, 5, 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, 72, 74, 76, 78, 91,
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104, 115, 117, 120, 122, 125, 127, 129,
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131, 133, 145, 157, 161, 165
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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, 22, 23, 22, 22, 1,
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24, 1, 26, 25, 27, 1, 3, 4,
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4, 4, 28, 28, 4, 4, 4, 4,
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4, 4, 1, 3, 4, 4, 4, 29,
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29, 4, 4, 4, 4, 4, 4, 1,
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3, 4, 4, 4, 30, 4, 4, 4,
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4, 4, 1, 31, 1, 32, 31, 1,
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33, 1, 34, 33, 1, 35, 1, 36,
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1, 37, 1, 38, 1, 40, 41, 1,
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1, 1, 1, 1, 1, 1, 1, 1,
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39, 43, 44, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 42, 45, 45, 45,
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1, 42, 42, 42, 1, 46, 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, 37, 23, 24, 25, 26,
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27, 28, 29, 30, 31, 32, 33, 34,
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16, 35, 34, 16, 35, 36, 37
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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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17, 1, 0, 11, 0, 0, 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 = 37;
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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 192 "./ragel/tsip_parser_message.rl" */
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tsk_bool_t tsip_message_parse(tsk_ragel_state_t *state, tsip_message_t **result, tsk_bool_t extract_content)
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{
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if(!state || state->pe <= state->p) {
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return tsk_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 223 "./src/parsers/tsip_parser_message.c" */
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37
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/* #line 214 "./ragel/tsip_parser_message.rl" */
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) {
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TSK_DEBUG_ERROR("Failed to parse SIP message: %s", state->p);
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TSK_OBJECT_SAFE_FREE(*result);
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return tsk_false;
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}
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return tsk_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 242 "./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 230 "./ragel/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, tsk_bool_t 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 260 "./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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short _widec;
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const char *_acts;
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unsigned int _nacts;
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const short *_keys;
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if ( p == pe ) {
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goto _test_eof;
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}
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if ( cs == 0 ) {
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goto _out;
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}
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_resume:
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_widec = (*p);
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_klen = _tsip_machine_parser_message_cond_lengths[cs];
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_keys = _tsip_machine_parser_message_cond_keys + (_tsip_machine_parser_message_cond_offsets[cs]*2);
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if ( _klen > 0 ) {
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const short *_lower = _keys;
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const short *_mid;
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const short *_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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}
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_mid = _lower + (((_upper-_lower) >> 1) & ~1);
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if ( _widec < _mid[0] ) {
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_upper = _mid - 2;
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}
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else if ( _widec > _mid[1] ) {
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_lower = _mid + 2;
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}
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else {
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switch ( _tsip_machine_parser_message_cond_spaces[_tsip_machine_parser_message_cond_offsets[cs] + ((_mid - _keys)>>1)] ) {
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case 0: {
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_widec = (short)(128 + ((*p) - -128));
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if (
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/* #line 36 "./ragel/tsip_parser_message.rl" */
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prev_not_comma(p)
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) {
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_widec += 256;
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}
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break;
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}
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}
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break;
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}
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}
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}
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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 short *_lower = _keys;
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const short *_mid;
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const short *_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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}
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_mid = _lower + ((_upper-_lower) >> 1);
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if ( _widec < *_mid ) {
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_upper = _mid - 1;
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}
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else if ( _widec > *_mid ) {
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_lower = _mid + 1;
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}
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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 short *_lower = _keys;
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const short *_mid;
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const short *_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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}
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_mid = _lower + (((_upper-_lower) >> 1) & ~1);
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if ( _widec < _mid[0] ) {
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_upper = _mid - 2;
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}
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else if ( _widec > _mid[1] ) {
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_lower = _mid + 2;
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}
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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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}
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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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switch ( *_acts++ ) {
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case 0:
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/* #line 55 "./ragel/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 61 "./ragel/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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message->type = tsip_request;
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if(!message->line.request.method) {
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message->line.request.method = tsk_calloc(1, len+1);
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memcpy(message->line.request.method, state->tag_start, len);
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message->line.request.request_type = tsip_request_get_type(message->line.request.method);
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}
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}
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else {
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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 84 "./ragel/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->line.request.uri) {
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message->line.request.uri = tsip_uri_parse(state->tag_start, (tsk_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 97 "./ragel/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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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 111 "./ragel/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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message->type = tsip_response;
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message->line.response.status_code = atoi(state->tag_start);
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}
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else {
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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 129 "./ragel/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->line.response.reason_phrase) {
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message->line.response.reason_phrase = tsk_calloc(1, len+1);
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memcpy(message->line.response.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 143 "./ragel/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 167 "./ragel/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;
|
|
p = state->p;
|
|
pe = state->pe;
|
|
eof = state->eof;
|
|
}
|
|
break;
|
|
/* #line 487 "./src/parsers/tsip_parser_message.c" */
|
|
}
|
|
}
|
|
|
|
_again:
|
|
if ( cs == 0 ) {
|
|
goto _out;
|
|
}
|
|
if ( ++p != pe ) {
|
|
goto _resume;
|
|
}
|
|
_test_eof: {
|
|
}
|
|
_out: {
|
|
}
|
|
}
|
|
|
|
/* #line 242 "./ragel/tsip_parser_message.rl" */
|
|
|
|
state->cs = cs;
|
|
state->p = p;
|
|
state->pe = pe;
|
|
state->eof = eof;
|
|
}
|
|
|
|
static void tsip_message_parser_eoh(tsk_ragel_state_t *state, tsip_message_t *message, tsk_bool_t extract_content)
|
|
{
|
|
int cs = state->cs;
|
|
const char *p = state->p;
|
|
const char *pe = state->pe;
|
|
const char *eof = state->eof;
|
|
const char *eoh = (state->p + 1);
|
|
|
|
if(extract_content && message) {
|
|
uint32_t clen = TSIP_MESSAGE_CONTENT_LENGTH(message);
|
|
if((p+clen) <pe && !message->Content) {
|
|
message->Content = tsk_buffer_create((p+1), clen);
|
|
p = (p+clen);
|
|
}
|
|
else {
|
|
p = (pe-1);
|
|
}
|
|
}
|
|
//%%write eof;
|
|
|
|
state->cs = cs;
|
|
state->p = p;
|
|
state->pe = pe;
|
|
state->eof = eof;
|
|
state->eoh = eoh;
|
|
}
|