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/*
* Copyright (C) 2000 Helix Code Inc.
*
* Authors: Michael Zucchi <notzed@helixcode.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _CAMEL_MIME_UTILS_H
#define _CAMEL_MIME_UTILS_H
#include <time.h>
struct _header_param {
struct _header_param *next;
char *name;
char *value;
};
/* describes a content-type */
struct _header_content_type {
char *type;
char *subtype;
struct _header_param *params;
unsigned int refcount;
};
/* a raw rfc822 header */
/* the value MUST be US-ASCII */
struct _header_raw {
struct _header_raw *next;
char *name;
char *value;
int offset; /* in file, if known */
};
typedef struct _CamelMimeDisposition {
char *disposition;
struct _header_param *params;
unsigned int refcount;
} CamelMimeDisposition;
/* structured header prameters */
char *header_param(struct _header_param *p, const char *name);
struct _header_param *header_set_param(struct _header_param **l, const char *name, const char *value);
void header_param_list_free(struct _header_param *p);
/* Content-Type header */
struct _header_content_type *header_content_type_new(const char *type, const char *subtype);
struct _header_content_type *header_content_type_decode(const char *in);
void header_content_type_unref(struct _header_content_type *ct);
void header_content_type_ref(struct _header_content_type *ct);
const char *header_content_type_param(struct _header_content_type *t, const char *name);
void header_content_type_set_param(struct _header_content_type *t, const char *name, const char *value);
int header_content_type_is(struct _header_content_type *ct, const char *type, const char *subtype);
char *header_content_type_format(struct _header_content_type *ct);
/* DEBUGGING function */
void header_content_type_dump(struct _header_content_type *ct);
/* Content-Disposition header */
CamelMimeDisposition *header_disposition_decode(const char *in);
void header_disposition_ref(CamelMimeDisposition *);
void header_disposition_unref(CamelMimeDisposition *);
char *header_disposition_format(CamelMimeDisposition *d);
/* decode the contents of a content-encoding header */
char *header_content_encoding_decode(const char *in);
/* raw headers */
void header_raw_append(struct _header_raw **list, const char *name, const char *value, int offset);
void header_raw_append_parse(struct _header_raw **list, const char *header, int offset);
const char *header_raw_find(struct _header_raw **list, const char *name, int *ofset);
const char *header_raw_find_next(struct _header_raw **list, const char *name, int *ofset, const char *last);
void header_raw_replace(struct _header_raw **list, const char *name, const char *value, int offset);
void header_raw_remove(struct _header_raw **list, const char *name);
void header_raw_clear(struct _header_raw **list);
/* decode a header which is a simple token */
char *header_token_decode(const char *in);
/* decode/encode a string type, like a subject line */
char *header_decode_string(const char *in);
char *header_encode_string(const unsigned char *in);
/* decode an email date field into a GMT time, + optional offset */
time_t header_decode_date(const char *in, int *saveoffset);
char *header_format_date(time_t time, int offset);
/* decode a message id */
char *header_msgid_decode(const char *in);
/* do incremental base64/quoted-printable (de/en)coding */
int base64_decode_step(unsigned char *in, int len, unsigned char *out, int *state, unsigned int *save);
int base64_encode_step(unsigned char *in, int len, unsigned char *out, int *state, int *save);
int base64_encode_close(unsigned char *in, int inlen, unsigned char *out, int *state, int *save);
int quoted_decode_step(unsigned char *in, int len, unsigned char *out, int *savestate, int *saveme);
int quoted_encode_step(unsigned char *in, int len, unsigned char *out, int *state, int *save);
int quoted_encode_close(unsigned char *in, int len, unsigned char *out, int *state, int *save);
#endif /* ! _CAMEL_MIME_UTILS_H */
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