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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"
/**
* @file mm_param.c
*
* Functions to manipulate MIME parameters
*/
/** @defgroup param Accessing and manipulating MIME parameters */
/** @{
*
* @name Functions for manipulating MIME parameters
*
* MIME parameters are properties attached to certain MIME headers, such as
* Content-Type and Content-Disposition. MIME parameters have a textual
* representations as in <i>name=value</i>. They contain important information
* about the MIME structure of a message, such as the boundary string used,
* which charset was used to encode the message and so on. This module
* provides simple to use functions to query or set MIME parameters.
*
* Each MIME header may hold an arbitrary amount of such parameters, which
* are delimeted by each other with a semicolon.
*/
/**
* Creates a new object to hold a MIME parameter.
*
* @return An object representing a MIME parameter
* @see mm_param_free
* @note The allocated memory must later be freed using mm_param_free()
*/
struct mm_param *
mm_param_new(void)
{
struct mm_param *param;
param = (struct mm_param *)xmalloc(sizeof(struct mm_param));
param->name = NULL;
param->value = NULL;
return param;
}
/**
* Releases all memory associated with a MIME parameter object.
*
* @param param A valid MIME parameter object to be freed
* @return Nothing
* @see mm_param_new
*/
void
mm_param_free(struct mm_param *param)
{
assert(param != NULL);
if (param->name != NULL) {
xfree(param->name);
param->name = NULL;
}
if (param->value != NULL) {
xfree(param->value);
param->value = NULL;
}
xfree(param);
}
/**
* Generates a new Content-Type parameter with the given name and value
*
* @param name The name of the MIME parameter
* @param value The value of the MIME parameter
* @returns A new MIME parameter object
* @see mm_param_free
* @see mm_param_new
*
* This function generates a new MIME parameter, with the name
* and value given as the arguments. The needed memory for the operation
* is allocated dynamically. It stores a copy of name and value in the
* actual object, so the memory holding the arguments can safely be
* freed after successfull return of this function.
*/
#if 0
struct mm_param *
mm_param_generate(const char *name, const char *value)
{
struct mm_param *param;
param = mm_param_new();
param->name = xstrdup(name);
param->value = xstrdup(value);
return param;
}
#endif
/**
* Sets the name of the given MIME parameter
*
* @param param A valid MIME parameter object
* @param name The new name of the parameter
* @param copy If set to > 0, copy the value stored in name
* @returns The address of the previous name for passing to free()
*/
#if 0
char *
mm_param_setname(struct mm_param *param, const char *name, int copy)
{
char *retadr;
assert(param != NULL);
retadr = param->name;
if (copy)
param->name = xstrdup(name);
else
param->name = (char *)name;
return retadr;
}
#endif
/**
* Sets the value of the given MIME parameter
*
* @param param A valid MIME parameter object
* @param name The new value for the parameter
* @param copy If set to > 0, copy the value stored in value
* @returns The address of the previous value for passing to free()
*/
#if 0
char *
mm_param_setvalue(struct mm_param *param, const char *value, int copy)
{
char *retadr;
assert(param != NULL);
retadr = param->value;
if (copy)
param->value = xstrdup(value);
else
param->value = (char *)value;
return retadr;
}
#endif
/**
* Gets the name of a MIME parameter object
*
* @param param A valid MIME parameter object
* @returns The name of the MIME parameter
*/
#if 0
const char *
mm_param_getname(struct mm_param *param)
{
assert(param != NULL);
return param->name;
}
#endif
/**
* Gets the value of a MIME parameter object
*
* @param param A valid MIME parameter object
* @returns The value of the MIME parameter
*/
#if 0
const char *
mm_param_getvalue(struct mm_param *param)
{
assert(param != NULL);
return param->value;
}
#endif
/** @} */
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