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/*
* $Id$
*
* MiniMIME - a library for handling MIME messages
*
* Copyright (C) 2003 Jann Fischer <rezine@mistrust.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of the contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JANN FISCHER AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JANN FISCHER OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include "mm_internal.h"
#include "mm_util.h"
#include "mimeparser.h"
#include "mimeparser.tab.h"
/** @file mm_parse.c
*
* Functions to parse MIME messages
*/
/**
* Parses a NUL-terminated string into a MiniMIME context
*
* @param ctx A valid MiniMIME context object
* @param text The NUL-terminated string to parse
* @param parsemode The parsemode
* @param flags The flags to pass to the parser
* @returns 0 on success or -1 on failure
* @note Sets mm_errno if an error occurs
*
* This function parses a MIME message, stored in the memory region pointed to
* by text (must be NUL-terminated) according to the parseflags and stores the
* results in the MiniMIME context specified by ctx.
*
* The following modes can be used to specify how the message should be
* parsed:
*
* - MM_PARSE_STRICT: Do not tolerate MIME violations
* - MM_PARSE_LOOSE: Tolerate as much MIME violations as possible
*
* The context needs to be initialized before using mm_context_new() and may
* be freed using mm_context_free().
*/
int
mm_parse_mem(MM_CTX *ctx, const char *text, int parsemode, int flags)
{
void *yyscanner;
int res;
struct parser_state pstate;
pstate.ctx = ctx;
pstate.parsemode = parsemode;
mimeparser_yylex_init(&yyscanner);
PARSER_initialize(&pstate, yyscanner);
PARSER_setbuffer(text, yyscanner);
PARSER_setfp(NULL, yyscanner);
res = mimeparser_yyparse(&pstate,yyscanner);
mimeparser_yylex_destroy(yyscanner);
return res;
}
/**
* Parses a file into a MiniMIME context
*
* @param ctx A valid MiniMIME context object
* @param filename The name of the file to parse
* @param parsemode The parsemode
* @param flags The flags to pass to the parser
* @returns 0 on success or -1 on failure
* @note Sets mm_errno if an error occurs
*
* This function parses a MIME message, stored in the filesystem according to
* the parseflags and stores the results in the MiniMIME context specified by
* ctx.
*
* The following modes can be used to specify how the message should be
* parsed:
*
* - MM_PARSE_STRICT: Do not tolerate MIME violations
* - MM_PARSE_LOOSE: Tolerate as much MIME violations as possible
*
* The context needs to be initialized before using mm_context_new() and may
* be freed using mm_context_free().
*/
int
mm_parse_file(MM_CTX *ctx, const char *filename, int parsemode, int flags)
{
FILE *fp;
int res;
void *yyscanner;
struct parser_state pstate;
mimeparser_yylex_init(&yyscanner);
if ((fp = fopen(filename, "r")) == NULL) {
mm_errno = MM_ERROR_ERRNO;
return -1;
}
PARSER_setfp(fp,yyscanner);
PARSER_initialize(&pstate, yyscanner);
pstate.ctx = ctx;
pstate.parsemode = parsemode;
res = mimeparser_yyparse(&pstate,yyscanner);
mimeparser_yylex_destroy(yyscanner);
fclose(fp);
return res;
}
int
mm_parse_fileptr(MM_CTX *ctx, FILE *f, int parsemode, int flags)
{
int res;
void *yyscanner;
struct parser_state pstate;
mimeparser_yylex_init(&yyscanner);
PARSER_setfp(f, yyscanner);
PARSER_initialize(&pstate, yyscanner);
pstate.ctx = ctx;
pstate.parsemode = parsemode;
res = mimeparser_yyparse(&pstate,yyscanner);
mimeparser_yylex_destroy(yyscanner);
return res;
}
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