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/*
 * Copyright (c) 2004, Nate Nielsen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above
 *       copyright notice, this list of conditions and the
 *       following disclaimer.
 *     * 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.
 *     * The names of contributors to this software may not be
 *       used to endorse or promote products derived from this
 *       software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE
 * COPYRIGHT OWNER OR CONTRIBUTORS 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.
 *
 *
 * CONTRIBUTORS
 *  Nate Nielsen <nielsen@memberwebs.com>
 *
 */

#ifndef __CLAMSMTPD_H__
#define __CLAMSMTPD_H__

#define BUF_LEN 256

typedef struct clio
{
    int fd;
    const char* name;
    unsigned char buf[BUF_LEN];
    size_t buflen;
}
clio_t;

/*
 * A generous maximum line length. It needs to be longer than
 * a full path on this system can be, because we pass the file
 * name to clamd.
 */

#if 2000 > MAXPATHLEN
    #define LINE_LENGTH 2000
#else
    #define LINE_LENGTH (MAXPATHLEN + 128)
#endif

typedef struct clamsmtp_context
{
    unsigned int id;        /* Identifier for the connection */

    clio_t client;          /* Connection to client */
    clio_t server;          /* Connection to server */
    clio_t clam;            /* Connection to clamd */

    char line[LINE_LENGTH]; /* Working buffer */
    int linelen;            /* Length of valid data in above */
}
clamsmtp_context_t;

extern int g_daemonized;              /* Currently running as a daemon */
extern int g_debuglevel;              /* what gets logged to console */
extern pthread_mutex_t g_mutex;       /* The main mutex */
extern struct timeval g_timeout;
extern int g_quit;

struct sockaddr_any;
#define LINE_TOO_LONG(ctx)      ((ctx)->linelen >= (LINE_LENGTH - 2))
#define RETURN(x)               { ret = x; goto cleanup; }


#define CLIO_TRIM           0x00000001
#define CLIO_DISCARD        0x00000002
#define CLIO_QUIET          0x00000004
#define clio_valid(io)      ((io)->fd != -1)

void clio_init(clio_t* io, const char* name);
int clio_connect(clamsmtp_context_t* ctx, clio_t* io, struct sockaddr_any* sany, const char* addrname);
void clio_disconnect(clamsmtp_context_t* ctx, clio_t* io);
int clio_select(clamsmtp_context_t* ctx, clio_t** io);
int clio_read_line(clamsmtp_context_t* ctx, clio_t* io, int trim);
int clio_write_data(clamsmtp_context_t* ctx, clio_t* io, const char* data);
int clio_write_data_raw(clamsmtp_context_t* ctx, clio_t* io, unsigned char* buf, int len);

#endif /* __CLAMSMTPD_H__ */