diff options
Diffstat (limited to 'tinyDEMO/dssl.rl')
| -rw-r--r-- | tinyDEMO/dssl.rl | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/tinyDEMO/dssl.rl b/tinyDEMO/dssl.rl new file mode 100644 index 0000000..cc4d104 --- /dev/null +++ b/tinyDEMO/dssl.rl @@ -0,0 +1,358 @@ +/* +* Copyright (C) 2009 Mamadou Diop. +* +* Contact: Mamadou Diop <diopmamadou(at)doubango.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. +* +*/ +#include "dssl.h" + +#include "tsk_debug.h" +#include "tsk_memory.h" +#include "tsk_string.h" +#include "tsk_ragel_state.h" + +#include <string.h> + +#define DEBUG_PARSER 0 + +#define set_level(_lv) if(opt) opt->lv = _lv; + +char* replace_param(char* pivot, int index_1, int index_2, tsk_params_L_t* params) +{ + char* pname = tsk_null; + char* ret = tsk_null; + const tsk_param_t* p; + //tsk_size_t len = tsk_strlen(pivot); + //tsk_bool_t parenthesis = tsk_false; + int i1, i2; + + /* whether there are parenthesis around the param */ + if((i1 = tsk_strindexOf((pivot + index_1), tsk_strlen((pivot + index_1)), "(")) == 2 + && (i2 = tsk_strindexOf((pivot + index_1 + i1), tsk_strlen((pivot + index_1 + i1)), ")")) != -1) + { + pname = tsk_strndup((pivot + index_1 + i1 + 1), (i2 - i1 + 1)); + index_2 = index_1 + i1 + i2 + 1; + } + else{ + pname = tsk_strndup((pivot + index_1 + 2/*$$*/), (index_2 - index_1 - 2)); + } + + if((p = tsk_params_get_param_by_name(params, pname))){ + tsk_strncat(&ret, pivot, index_1); + tsk_strncat(&ret, p->value, tsk_strlen(p->value)); + tsk_strncat(&ret, (pivot + index_2), (tsk_strlen(pivot) - index_2)); + } + else{ + TSK_DEBUG_WARN("Failed to find param [%s]", pname); + } + + TSK_FREE(pname); + return ret; +} + +tsk_bool_t next_not_(const char* p, const char* pe, char c) +{ + if((p && pe) && (pe-p) >=2){ + return (*p == c && *(p + 1) == c) ? tsk_false : tsk_true; + } + return tsk_true; +} +#define next_not_hyphens(p, pe) next_not_(p, pe, '-') +#define next_not_arobases(p, pe) next_not_(p, pe, '@') +#define next_not_percents(p, pe) next_not_(p, pe, '%') +#define next_not_redirs(p, pe) next_not_(p, pe, '>') + +/*********************************** +* Ragel state machine. +*/ +%%{ + machine demo_machine_parser_cmd; + + action tag{ + tag_start = p; +#if DEBUG_PARSER + // - TSK_DEBUG_INFO("tag=%s", tag_start); +#endif + } + + action create_option{ +#if DEBUG_PARSER + TSK_DEBUG_INFO("create_option"); +#endif + TSK_OBJECT_SAFE_FREE(opt); + opt = opt_create_null(); + } + + action add_option{ +#if DEBUG_PARSER + TSK_DEBUG_INFO("add_option"); +#endif + tsk_list_push_back_data(cmd->opts, (void**)&opt); + } + + action set_opt_value{ + if(opt){ + int index_1, index_2; + char* newval = tsk_null; + TSK_PARSER_SET_STRING(opt->value); + /* trim both: left and right */ + tsk_strtrim_both(&opt->value); + /* replace params */ +replace: + if((index_1 = tsk_strindexOf(opt->value, tsk_strlen(opt->value), "$$")) != -1){ + if((index_2 = tsk_strindexOf((opt->value + index_1), tsk_strlen((opt->value + index_1)), " ")) != -1){ + newval = replace_param(opt->value, index_1, (index_1 + index_2), params); + } + else{ + newval = replace_param(opt->value, index_1, tsk_strlen(opt->value), params); + } + if(newval){ + TSK_FREE(opt->value); + opt->value = newval; + + /* again */ + goto replace; + } + } +#if DEBUG_PARSER + TSK_DEBUG_INFO("set_opt_value [%d] '%s'", opt->type, opt->value); +#endif + } + } + + action set_sidparam_value{ + TSK_PARSER_SET_STRING(cmd->sidparam); +#if DEBUG_PARSER + TSK_DEBUG_INFO("set_sidparam_value '%s'", cmd->sidparam); +#endif + } + + action create_param{ +#if DEBUG_PARSER + TSK_DEBUG_INFO("create_param"); +#endif + TSK_OBJECT_SAFE_FREE(param); + param = tsk_param_create_null(); + } + + action add_param{ +#if DEBUG_PARSER + TSK_DEBUG_INFO("add_param"); +#endif + tsk_params_add_param_2(¶ms, param); + TSK_OBJECT_SAFE_FREE(param); + } + + action set_param_value{ + if(param){ + TSK_PARSER_SET_STRING(param->value); + /* trim both: left and right */ + tsk_strtrim_both(¶m->value); +#if DEBUG_PARSER + TSK_DEBUG_INFO("set_param_value [%s] '%s'", param->name, param->value); +#endif + } + } + + action set_param_name{ + if(param){ + TSK_PARSER_SET_STRING(param->name); + } + } + + action is_comment{ +#if DEBUG_PARSER + TSK_PARSER_SET_STRING(temp); + TSK_DEBUG_INFO("is_comment '%s'", temp); +#endif + // *comment = tsk_true; + // TSK_OBJECT_SAFE_FREE(opts); + } + + action next_not_reserved{ + next_not_hyphens(p, pe) + && next_not_arobases(p, pe) + && next_not_percents(p, pe) + && next_not_redirs(p, pe) + && (p && *p != '\n') + && (p && *p != '#') + } + + action next_not_newline{ + (p && *p != '\n') + } + + action option_error{ + TSK_PARSER_SET_STRING(temp); + TSK_DEBUG_ERROR("'%s' is not a valid option.", temp); + } + + action command_error{ + TSK_PARSER_SET_STRING(temp); + TSK_DEBUG_ERROR("'%s' is not a valid command.", temp); + } + + action level_error{ + TSK_PARSER_SET_STRING(temp); + TSK_DEBUG_ERROR("'%s' is not a valid level.", temp); + } + + SP = " "; + LF = "\n"; + CR = "\r"; + endline = ("\n" | "\r"); + equal = "="; + hyphens = "-" {2,}; + plusplus = "+" {2,}; + percents = "%" {2,}; + redirs = ">" {2,}; + sharp = "#"; + arobases = "@" {2,}; + + command = (("audio"i | "a"i) %{ cmd->type = cmd_audio; } | + ("audiovideo"i | "av"i) %{ cmd->type = cmd_audiovideo; } | + ("config-session"i | "css"i) %{ cmd->type = cmd_config_session; } | + ("config-stack"i | "cst"i) %{ cmd->type = cmd_config_stack; } | + ("dtmf"i) %{ cmd->type = cmd_dtmf; } | + ("dump"i | "d"i) %{ cmd->type = cmd_dump; } | + ("ect"i) %{ cmd->type = cmd_ect; } | + ("exit"i | "e"i | "quit"i | "q"i) %{ cmd->type = cmd_exit; } | + ("file"i | "f"i) %{ cmd->type = cmd_file; } | + ("hangup"i | "hu"i) %{ cmd->type = cmd_hangup; } | + ("help"i | "h"i) %{ cmd->type = cmd_help; } | + ("hold"i | "ho"i) %{ cmd->type = cmd_hold; } | + ("large-message"i | "lm"i) %{ cmd->type = cmd_large_message; } | + ("message"i | "m"i) %{ cmd->type = cmd_message; } | + ("options"i | "opt"i) %{ cmd->type = cmd_options; } | + ("publish"i | "pub"i) %{ cmd->type = cmd_publish; } | + ("register"i | "reg"i) %{ cmd->type = cmd_register; } | + ("resume"i | "res"i) %{ cmd->type = cmd_resume; } | + ("run"i | "r"i) %{ cmd->type = cmd_run; } | + ("scenario"i | "sn"i) %{ cmd->type = cmd_scenario; } | + "sleep"i %{ cmd->type = cmd_sleep; } | + "sms"i %{ cmd->type = cmd_sms; } | + "stop"i %{ cmd->type = cmd_stop; } | + ("subscribe"i | "sub"i) %{ cmd->type = cmd_subscribe; } | + ("video"i | "v"i) %{ cmd->type = cmd_video; } + )** >10 | + (any*) >tag >0 %command_error; + + key = ("amf"i % { opt->type = opt_amf; } | + "caps"i % { opt->type = opt_caps; } | + "dhcpv4"i % { opt->type = opt_dhcpv4; } | + "dhcpv6"i % { opt->type = opt_dhcpv6; } | + "dname"i % { opt->type = opt_amf; } | + "dns-naptr"i % { opt->type = opt_dname; } | + "event"i % { opt->type = opt_event; } | + ("expires"i | "xp"i) % { opt->type = opt_expires; } | + "from"i % { opt->type = opt_from; } | + "header"i % { opt->type = opt_header; } | + "impi"i % { opt->type = opt_impi; } | + "impu"i % { opt->type = opt_impu; } | + "ipv6"i % { opt->type = opt_ipv6; } | + "local-ip"i % { opt->type = opt_local_ip; } | + "local-port"i % { opt->type = opt_local_port; } | + "opid"i % { opt->type = opt_opid; } | + ("password"i | "pwd"i) % { opt->type = opt_password; } | + "path"i % { opt->type = opt_path; } | + ("payload"i | "pay"i) % { opt->type = opt_payload; } | + "pcscf-ip"i % { opt->type = opt_pcscf_ip; } | + "pcscf-port"i % { opt->type = opt_pcscf_port; } | + "pcscf-trans"i % { opt->type = opt_pcscf_trans; } | + "realm"i % { opt->type = opt_realm; } | + "sec"i % { opt->type = opt_sec; } | + "sid"i % { opt->type = opt_sid; } | + "sigcomp-id"i % { opt->type = opt_sigcomp_id; } | + "silent"i % { opt->type = opt_silent; } | + "smsc"i % { opt->type = opt_smsc; } | + "stun-ip"i % { opt->type = opt_stun_ip; } | + "stun-pwd"i % { opt->type = opt_stun_pwd; } | + "stun-port"i % { opt->type = opt_stun_port; } | + "stun-usr"i % { opt->type = opt_stun_usr; } | + "to"i % { opt->type = opt_to; } + )** >10 | + (any*) >tag >0 %option_error; + + level_stack = ("stack"i | "st"i); + level_session = ("session"i | "ss"i); + level_action= ("action"i | "request"i | "a"i | "r"i); + level = ( (level_stack %{ set_level(lv_stack); } | level_session %{ set_level(lv_session); } | level_action %{ set_level(lv_action); })** > 10 + | (any*)>tag >0 %level_error ) :> space*; + value = (any when next_not_reserved)*>tag; + option = key>tag:>SP* <:value %set_opt_value (arobases level)?; + + pname = (any when next_not_newline)*>tag %set_param_name; + pvalue = value; + param = pname :>(space | '\n')+ <:pvalue %set_param_value; + + main := |* + (plusplus command) >100 { }; + (hyphens option>create_option %add_option) >99 { }; + (percents param>create_param %add_param) >98 { }; + (redirs "("?<: value %set_sidparam_value :>")"?) >97 { }; + (sharp (any when next_not_newline)* >tag %is_comment) >96 { }; + any >0 { }; + *|; +}%% + +cmd_t* dssl_parse(const char *buffer, tsk_size_t size, tsk_bool_t *comment, tsk_params_L_t* params) +{ + int cs = 0; + const char *p = buffer; + const char *pe; + const char *eof; + opt_t* opt = tsk_null; + tsk_param_t* param = tsk_null; + cmd_t *cmd = cmd_create_null(); + char* temp = tsk_null; + int index; + + const char *ts = tsk_null, *te = tsk_null; + int act = 0; + + const char *tag_start = tsk_null; + + /* global vars and initilization (Ragel) */ + %%write data; + %%write init; + + /* default values */ + *comment = tsk_false; + + /* only parse one line */ + if((index = tsk_strindexOf(p, size, "\n")) != -1){ + pe = eof = (p + index + 1/*\n*/); + } + else{ + pe = eof = p + size; + } + + /* exec */ + %%write exec; + + if( cs < %%{ write first_final; }%% ){ + TSK_DEBUG_ERROR("Failed to parse [%s] command-Line.", p); + TSK_OBJECT_SAFE_FREE(cmd); + } + TSK_OBJECT_SAFE_FREE(opt); + TSK_OBJECT_SAFE_FREE(param); + TSK_FREE(temp); + + return cmd; +} + |
