diff options
Diffstat (limited to 'plugins/mate/mate_parser.l')
| -rw-r--r-- | plugins/mate/mate_parser.l | 275 |
1 files changed, 165 insertions, 110 deletions
diff --git a/plugins/mate/mate_parser.l b/plugins/mate/mate_parser.l index 865b8d138c..706900b839 100644 --- a/plugins/mate/mate_parser.l +++ b/plugins/mate/mate_parser.l @@ -1,4 +1,9 @@ /* + * We want a reentrant scanner. + */ +%option reentrant + +/* * We don't use input, so don't generate code for it. */ %option noinput @@ -19,10 +24,28 @@ %option noyywrap /* - * Prefix scanner routines with "Mate" rather than "yy", so this scanner + * The type for the state we keep for a scanner. + */ +%option extra-type="Mate_scanner_state_t *" + +/* + * We have to override the memory allocators so that we don't get + * "unused argument" warnings from the yyscanner argument (which + * we don't use, as we have a global memory allocator). + * + * We provide, as macros, our own versions of the routines generated by Flex, + * which just call malloc()/realloc()/free() (as the Flex versions do), + * discarding the extra argument. + */ +%option noyyalloc +%option noyyrealloc +%option noyyfree + +/* + * Prefix scanner routines with "Mate_" rather than "yy", so this scanner * can coexist with other scanners. */ -%option prefix="Mate" +%option prefix="Mate_" %{ @@ -52,7 +75,6 @@ #include "mate.h" #include "mate_grammar.h" -#include "mate_parser_lex.h" #include <wsutil/file_util.h> @@ -72,15 +94,18 @@ void MateParseTrace(FILE*,char*); #define MAX_INCLUDE_DEPTH 10 - static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; - static int include_stack_ptr = 0; +typedef struct { + mate_config* mc; - static void* pParser; - static mate_config_frame* current_frame; + mate_config_frame* current_frame; - static mate_config* mc; + void* pParser; -#define MATE_PARSE(token_type) MateParser(pParser, (token_type), g_strdup(yytext), mc ); + YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; + int include_stack_ptr; +} Mate_scanner_state_t; + +#define MATE_PARSE(token_type) MateParser(yyextra->pParser, (token_type), g_strdup(yytext), yyextra->mc); /* * Flex (v 2.5.35) uses this symbol to "exclude" unistd.h @@ -94,6 +119,20 @@ static void free_config_frame(mate_config_frame *frame) { g_free(frame); } +#define YY_USER_INIT BEGIN OUTSIDE; + +/* + * Sleazy hack to suppress compiler warnings in yy_fatal_error(). + */ +#define YY_EXIT_FAILURE ((void)yyscanner, 2) + +/* + * Macros for the allocators, to discard the extra argument. + */ +#define Mate_alloc(size, yyscanner) (void *)malloc(size) +#define Mate_realloc(ptr, size, yyscanner) (void *)realloc((char *)(ptr), (size)) +#define Mate_free(ptr, yyscanner) free((char *)ptr) + %} pdu_kw Pdu @@ -176,36 +215,36 @@ blk_cmnt_stop "*/" %START OUTSIDE QUOTED INCLUDING COMMENT %% -{newline} current_frame->linenum++; -{whitespace} ; +{newline} yyextra->current_frame->linenum++; +{whitespace} ; -<OUTSIDE>{include} BEGIN INCLUDING; +<OUTSIDE>{include} BEGIN INCLUDING; <INCLUDING>{filename} { - if ( include_stack_ptr >= MAX_INCLUDE_DEPTH ) + if ( yyextra->include_stack_ptr >= MAX_INCLUDE_DEPTH ) g_error("dtd_preparse: include files nested too deeply"); - include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER; + yyextra->include_stack[yyextra->include_stack_ptr++] = YY_CURRENT_BUFFER; yyin = ws_fopen( yytext, "r" ); if (!yyin) { - yy_delete_buffer( YY_CURRENT_BUFFER ); + Mate__delete_buffer(YY_CURRENT_BUFFER, yyscanner); /* coverity[negative_sink] */ - yy_switch_to_buffer(include_stack[--include_stack_ptr] ); + Mate__switch_to_buffer(yyextra->include_stack[--yyextra->include_stack_ptr], yyscanner); if (errno) - g_string_append_printf(mc->config_error, "Mate parser: Could not open file: '%s': %s", yytext, g_strerror(errno) ); + g_string_append_printf(yyextra->mc->config_error, "Mate parser: Could not open file: '%s': %s", yytext, g_strerror(errno) ); } else { - current_frame = (mate_config_frame *)g_malloc(sizeof(mate_config_frame)); - current_frame->filename = g_strdup(yytext); - current_frame->linenum = 1; + yyextra->current_frame = (mate_config_frame *)g_malloc(sizeof(mate_config_frame)); + yyextra->current_frame->filename = g_strdup(yytext); + yyextra->current_frame->linenum = 1; - g_ptr_array_add(mc->config_stack,current_frame); + g_ptr_array_add(yyextra->mc->config_stack,yyextra->current_frame); - yy_switch_to_buffer(yy_create_buffer( yyin, YY_BUF_SIZE ) ); + Mate__switch_to_buffer(Mate__create_buffer(yyin, YY_BUF_SIZE, yyscanner), yyscanner); } BEGIN OUTSIDE; @@ -213,134 +252,150 @@ blk_cmnt_stop "*/" <<EOF>> { /* coverity[check_after_sink] */ - if ( --include_stack_ptr < 0 ) { + if ( --yyextra->include_stack_ptr < 0 ) { yyterminate(); } else { - yy_delete_buffer( YY_CURRENT_BUFFER ); - yy_switch_to_buffer( include_stack[include_stack_ptr] ); + Mate__delete_buffer(YY_CURRENT_BUFFER, yyscanner); + Mate__switch_to_buffer(yyextra->include_stack[yyextra->include_stack_ptr], yyscanner); - free_config_frame(current_frame); - current_frame = (mate_config_frame *)g_ptr_array_remove_index(mc->config_stack,mc->config_stack->len-1); + free_config_frame(yyextra->current_frame); + yyextra->current_frame = (mate_config_frame *)g_ptr_array_remove_index(yyextra->mc->config_stack,yyextra->mc->config_stack->len-1); } } -<OUTSIDE>{comment} ; +<OUTSIDE>{comment} ; -<OUTSIDE>{blk_cmnt_start} BEGIN COMMENT; +<OUTSIDE>{blk_cmnt_start} BEGIN COMMENT; <COMMENT>{cmnt_char} ; <COMMENT>{blk_cmnt_stop} BEGIN OUTSIDE; -<OUTSIDE>{pdu_kw} MATE_PARSE(TOKEN_PDU_KW); -<OUTSIDE>{gop_kw} MATE_PARSE(TOKEN_GOP_KW); -<OUTSIDE>{gog_kw} MATE_PARSE(TOKEN_GOG_KW); -<OUTSIDE>{transform_kw} MATE_PARSE(TOKEN_TRANSFORM_KW); -<OUTSIDE>{match_kw} MATE_PARSE(TOKEN_MATCH_KW); -<OUTSIDE>{strict_kw} MATE_PARSE(TOKEN_STRICT_KW); -<OUTSIDE>{every_kw} MATE_PARSE(TOKEN_EVERY_KW); -<OUTSIDE>{loose_kw} MATE_PARSE(TOKEN_LOOSE_KW); -<OUTSIDE>{replace_kw} MATE_PARSE(TOKEN_REPLACE_KW); -<OUTSIDE>{insert_kw} MATE_PARSE(TOKEN_INSERT_KW); -<OUTSIDE>{gop_tree_kw} MATE_PARSE(TOKEN_GOP_TREE_KW); -<OUTSIDE>{member_kw} MATE_PARSE(TOKEN_MEMBER_KW); -<OUTSIDE>{on_kw} MATE_PARSE(TOKEN_ON_KW); -<OUTSIDE>{start_kw} MATE_PARSE(TOKEN_START_KW); -<OUTSIDE>{stop_kw} MATE_PARSE(TOKEN_STOP_KW); -<OUTSIDE>{extra_kw} MATE_PARSE(TOKEN_EXTRA_KW); -<OUTSIDE>{show_tree_kw} MATE_PARSE(TOKEN_SHOW_TREE_KW); -<OUTSIDE>{show_times_kw} MATE_PARSE(TOKEN_SHOW_TIMES_KW); -<OUTSIDE>{expiration_kw} MATE_PARSE(TOKEN_EXPIRATION_KW); -<OUTSIDE>{idle_timeout_kw} MATE_PARSE(TOKEN_IDLE_TIMEOUT_KW); -<OUTSIDE>{lifetime_kw} MATE_PARSE(TOKEN_LIFETIME_KW); -<OUTSIDE>{no_tree_kw} MATE_PARSE(TOKEN_NO_TREE_KW); -<OUTSIDE>{pdu_tree_kw} MATE_PARSE(TOKEN_PDU_TREE_KW); -<OUTSIDE>{frame_tree_kw} MATE_PARSE(TOKEN_FRAME_TREE_KW); -<OUTSIDE>{basic_tree_kw} MATE_PARSE(TOKEN_BASIC_TREE_KW); -<OUTSIDE>{true_kw} MATE_PARSE(TOKEN_TRUE_KW); -<OUTSIDE>{false_kw} MATE_PARSE(TOKEN_FALSE_KW); -<OUTSIDE>{proto_kw} MATE_PARSE(TOKEN_PROTO_KW); -<OUTSIDE>{payload_kw} MATE_PARSE(TOKEN_PAYLOAD_KW); -<OUTSIDE>{transport_kw} MATE_PARSE(TOKEN_TRANSPORT_KW); -<OUTSIDE>{criteria_kw} MATE_PARSE(TOKEN_CRITERIA_KW); -<OUTSIDE>{accept_kw} MATE_PARSE(TOKEN_ACCEPT_KW); -<OUTSIDE>{reject_kw} MATE_PARSE(TOKEN_REJECT_KW); -<OUTSIDE>{extract_kw} MATE_PARSE(TOKEN_EXTRACT_KW); -<OUTSIDE>{from_kw} MATE_PARSE(TOKEN_FROM_KW); +<OUTSIDE>{pdu_kw} MATE_PARSE(TOKEN_PDU_KW); +<OUTSIDE>{gop_kw} MATE_PARSE(TOKEN_GOP_KW); +<OUTSIDE>{gog_kw} MATE_PARSE(TOKEN_GOG_KW); +<OUTSIDE>{transform_kw} MATE_PARSE(TOKEN_TRANSFORM_KW); +<OUTSIDE>{match_kw} MATE_PARSE(TOKEN_MATCH_KW); +<OUTSIDE>{strict_kw} MATE_PARSE(TOKEN_STRICT_KW); +<OUTSIDE>{every_kw} MATE_PARSE(TOKEN_EVERY_KW); +<OUTSIDE>{loose_kw} MATE_PARSE(TOKEN_LOOSE_KW); +<OUTSIDE>{replace_kw} MATE_PARSE(TOKEN_REPLACE_KW); +<OUTSIDE>{insert_kw} MATE_PARSE(TOKEN_INSERT_KW); +<OUTSIDE>{gop_tree_kw} MATE_PARSE(TOKEN_GOP_TREE_KW); +<OUTSIDE>{member_kw} MATE_PARSE(TOKEN_MEMBER_KW); +<OUTSIDE>{on_kw} MATE_PARSE(TOKEN_ON_KW); +<OUTSIDE>{start_kw} MATE_PARSE(TOKEN_START_KW); +<OUTSIDE>{stop_kw} MATE_PARSE(TOKEN_STOP_KW); +<OUTSIDE>{extra_kw} MATE_PARSE(TOKEN_EXTRA_KW); +<OUTSIDE>{show_tree_kw} MATE_PARSE(TOKEN_SHOW_TREE_KW); +<OUTSIDE>{show_times_kw} MATE_PARSE(TOKEN_SHOW_TIMES_KW); +<OUTSIDE>{expiration_kw} MATE_PARSE(TOKEN_EXPIRATION_KW); +<OUTSIDE>{idle_timeout_kw} MATE_PARSE(TOKEN_IDLE_TIMEOUT_KW); +<OUTSIDE>{lifetime_kw} MATE_PARSE(TOKEN_LIFETIME_KW); +<OUTSIDE>{no_tree_kw} MATE_PARSE(TOKEN_NO_TREE_KW); +<OUTSIDE>{pdu_tree_kw} MATE_PARSE(TOKEN_PDU_TREE_KW); +<OUTSIDE>{frame_tree_kw} MATE_PARSE(TOKEN_FRAME_TREE_KW); +<OUTSIDE>{basic_tree_kw} MATE_PARSE(TOKEN_BASIC_TREE_KW); +<OUTSIDE>{true_kw} MATE_PARSE(TOKEN_TRUE_KW); +<OUTSIDE>{false_kw} MATE_PARSE(TOKEN_FALSE_KW); +<OUTSIDE>{proto_kw} MATE_PARSE(TOKEN_PROTO_KW); +<OUTSIDE>{payload_kw} MATE_PARSE(TOKEN_PAYLOAD_KW); +<OUTSIDE>{transport_kw} MATE_PARSE(TOKEN_TRANSPORT_KW); +<OUTSIDE>{criteria_kw} MATE_PARSE(TOKEN_CRITERIA_KW); +<OUTSIDE>{accept_kw} MATE_PARSE(TOKEN_ACCEPT_KW); +<OUTSIDE>{reject_kw} MATE_PARSE(TOKEN_REJECT_KW); +<OUTSIDE>{extract_kw} MATE_PARSE(TOKEN_EXTRACT_KW); +<OUTSIDE>{from_kw} MATE_PARSE(TOKEN_FROM_KW); <OUTSIDE>{drop_unassigned_kw} MATE_PARSE(TOKEN_DROP_UNASSIGNED_KW); <OUTSIDE>{discard_pdu_data_kw} MATE_PARSE(TOKEN_DISCARD_PDU_DATA_KW); -<OUTSIDE>{last_pdu_kw} MATE_PARSE(TOKEN_LAST_PDU_KW); -<OUTSIDE>{done_kw} MATE_PARSE(TOKEN_DONE_KW); -<OUTSIDE>{filename_kw} MATE_PARSE(TOKEN_FILENAME_KW); -<OUTSIDE>{debug_kw} MATE_PARSE(TOKEN_DEBUG_KW); -<OUTSIDE>{level_kw} MATE_PARSE(TOKEN_LEVEL_KW); -<OUTSIDE>{default_kw} MATE_PARSE(TOKEN_DEFAULT_KW); - -<OUTSIDE>{open_parens} MATE_PARSE(TOKEN_OPEN_PARENS); -<OUTSIDE>{close_parens} MATE_PARSE(TOKEN_CLOSE_PARENS); -<OUTSIDE>{open_brace} MATE_PARSE(TOKEN_OPEN_BRACE); -<OUTSIDE>{close_brace} MATE_PARSE(TOKEN_CLOSE_BRACE); -<OUTSIDE>{comma} MATE_PARSE(TOKEN_COMMA); -<OUTSIDE>{semicolon} MATE_PARSE(TOKEN_SEMICOLON); -<OUTSIDE>{slash} MATE_PARSE(TOKEN_SLASH); -<OUTSIDE>{pipe} MATE_PARSE(TOKEN_PIPE); - -<OUTSIDE>{integer} MATE_PARSE(TOKEN_INTEGER); -<OUTSIDE>{floating} MATE_PARSE(TOKEN_FLOATING); -<OUTSIDE>{doted_ip} MATE_PARSE(TOKEN_DOTED_IP); -<OUTSIDE>{colonized} MATE_PARSE(TOKEN_COLONIZED); -<OUTSIDE>{name} MATE_PARSE(TOKEN_NAME); -<OUTSIDE>{avp_operator} MATE_PARSE(TOKEN_AVP_OPERATOR); - - -<OUTSIDE>{quote} BEGIN QUOTED; +<OUTSIDE>{last_pdu_kw} MATE_PARSE(TOKEN_LAST_PDU_KW); +<OUTSIDE>{done_kw} MATE_PARSE(TOKEN_DONE_KW); +<OUTSIDE>{filename_kw} MATE_PARSE(TOKEN_FILENAME_KW); +<OUTSIDE>{debug_kw} MATE_PARSE(TOKEN_DEBUG_KW); +<OUTSIDE>{level_kw} MATE_PARSE(TOKEN_LEVEL_KW); +<OUTSIDE>{default_kw} MATE_PARSE(TOKEN_DEFAULT_KW); + +<OUTSIDE>{open_parens} MATE_PARSE(TOKEN_OPEN_PARENS); +<OUTSIDE>{close_parens} MATE_PARSE(TOKEN_CLOSE_PARENS); +<OUTSIDE>{open_brace} MATE_PARSE(TOKEN_OPEN_BRACE); +<OUTSIDE>{close_brace} MATE_PARSE(TOKEN_CLOSE_BRACE); +<OUTSIDE>{comma} MATE_PARSE(TOKEN_COMMA); +<OUTSIDE>{semicolon} MATE_PARSE(TOKEN_SEMICOLON); +<OUTSIDE>{slash} MATE_PARSE(TOKEN_SLASH); +<OUTSIDE>{pipe} MATE_PARSE(TOKEN_PIPE); + +<OUTSIDE>{integer} MATE_PARSE(TOKEN_INTEGER); +<OUTSIDE>{floating} MATE_PARSE(TOKEN_FLOATING); +<OUTSIDE>{doted_ip} MATE_PARSE(TOKEN_DOTED_IP); +<OUTSIDE>{colonized} MATE_PARSE(TOKEN_COLONIZED); +<OUTSIDE>{name} MATE_PARSE(TOKEN_NAME); +<OUTSIDE>{avp_operator} MATE_PARSE(TOKEN_AVP_OPERATOR); + + +<OUTSIDE>{quote} BEGIN QUOTED; <QUOTED>{not_quoted} MATE_PARSE(TOKEN_QUOTED); -<QUOTED>{quote} BEGIN OUTSIDE; +<QUOTED>{quote} BEGIN OUTSIDE; %% -extern gboolean mate_load_config(const gchar* filename, mate_config* matecfg) { - volatile gboolean state = TRUE; - mc = matecfg; +extern gboolean mate_load_config(const gchar* filename, mate_config* mc) { + FILE *in; + yyscan_t scanner; + Mate_scanner_state_t state; + volatile gboolean status = TRUE; - yyin = ws_fopen(filename,"r"); + in = ws_fopen(filename,"r"); - if (!yyin) { + if (!in) { g_string_append_printf(mc->config_error,"Mate parser: Could not open file: '%s', error: %s", filename, g_strerror(errno) ); return FALSE; } + if (Mate_lex_init(&scanner) != 0) { + g_string_append_printf(mc->config_error, "Mate parse: Could not initialize scanner: %s", g_strerror(errno)); + fclose(in); + return FALSE; + } + + Mate_set_in(in, scanner); + mc->config_stack = g_ptr_array_new(); - current_frame = (mate_config_frame *)g_malloc(sizeof(mate_config_frame)); - current_frame->filename = g_strdup(filename); - current_frame->linenum = 1; + state.mc = mc; + + state.current_frame = (mate_config_frame *)g_malloc(sizeof(mate_config_frame)); + state.current_frame->filename = g_strdup(filename); + state.current_frame->linenum = 1; + + g_ptr_array_add(mc->config_stack,state.current_frame); + + state.pParser = MateParserAlloc(g_malloc); - g_ptr_array_add(mc->config_stack,current_frame); + state.include_stack_ptr = 0; - pParser = MateParserAlloc(g_malloc); + /* Associate the state with the scanner */ + Mate_set_extra(&state, scanner); /* MateParserTrace(stdout,""); */ TRY { - BEGIN OUTSIDE; - - yylex(); + Mate_lex(scanner); /* Inform parser that end of input has reached. */ - MateParser(pParser, 0, NULL,mc); - - yyrestart(NULL); + MateParser(state.pParser, 0, NULL, mc); - MateParserFree(pParser, g_free ); + MateParserFree(state.pParser, g_free); } CATCH(MateConfigError) { - state = FALSE; + status = FALSE; } CATCH_ALL { - state = FALSE; + status = FALSE; g_string_append_printf(mc->config_error,"An unexpected error occurred"); } ENDTRY; + Mate_lex_destroy(scanner); + fclose(in); + g_ptr_array_foreach(mc->config_stack, (GFunc)free_config_frame, NULL); g_ptr_array_free(mc->config_stack, FALSE); - return state; + return status; } |