/*
 * Copyright (C) 1996,1997 Michael R. Elkins <me@cs.hmc.edu>
 * 
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU 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 General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, write to the Free Software
 *     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */ 

#ifdef _PGPPATH

#include "state.h"

#define PGPENCRYPT 1
#define PGPSIGN    2
#define PGPKEY     4

#define KEYFLAG_CANSIGN (1 << 0)
#define KEYFLAG_CANENCRYPT (1 << 1)
#define KEYFLAG_EXPIRED (1 << 8)
#define KEYFLAG_REVOKED (1 << 9)
#define KEYFLAG_DISABLED (1 << 10)
#define KEYFLAG_SUBKEY (1 << 11)
#define KEYFLAG_CRITICAL (1 << 12)
#define KEYFLAG_PREFER_ENCRYPTION (1 << 13)
#define KEYFLAG_PREFER_SIGNING (1 << 14)

typedef struct keyinfo
{
  char *keyid;
  LIST *address;
  short flags;
  short keylen;
  unsigned long gen_time;
  const char *algorithm;
  struct keyinfo *mainkey;
  struct keyinfo *next;
} KEYINFO;

typedef struct pgp_uid
{
  char *addr;
  short trust;
} PGPUID;

enum pgp_version {
  PGP2, PGP3, PGP_G10, PGP_UNKNOWN
};

WHERE char Pgp[_POSIX_PATH_MAX];
WHERE char PgpSignAs[SHORT_STRING] INITVAL ({0});
WHERE short PgpTimeout INITVAL (300); /* 5 minutes */
WHERE char PgpPubring[_POSIX_PATH_MAX];
WHERE char PgpSecring[_POSIX_PATH_MAX];
WHERE char PgpVersion[SHORT_STRING] INITVAL ("pgp2");

BODY *pgp_decrypt_part (BODY *, STATE *, FILE *);
BODY *pgp_make_key_attachment (char *);

int pgp_query (BODY *);
int pgp_valid_passphrase (void);
int pgp_protect (HEADER *);
int mutt_check_pgp (HEADER *h);

enum pgp_version pgp_version(void);

void pgp_extract_keys_from_attachment_list (FILE *fp, int tag, BODY *top);
void pgp_extract_keys_from_messages(HEADER *hdr);
void application_pgp_handler (BODY *, STATE *);
void pgp_signed_handler (BODY *, STATE *);
void pgp_encrypted_handler (BODY *, STATE *);
void pgp_void_passphrase (void);
void mutt_forget_passphrase (void);
void pgp_closedb (KEYINFO *);

char *pgp_keyid(KEYINFO *);

char *pgp_ask_for_key (const char *, KEYINFO *, char *, char *, short);

char *ki_getkeybyaddr (ADDRESS *, KEYINFO *, short);
char *ki_getkeybystr (char *, KEYINFO *, short);

KEYINFO *pgp_read_keyring(const char *);

pid_t pgp_invoke_decode(FILE **, FILE **, FILE **, int, int, int, const char *, int);
pid_t pgp_invoke_verify(FILE **, FILE **, FILE **, int, int, int, const char *, const char *);
pid_t pgp_invoke_decrypt(FILE **, FILE **, FILE **, int, int, int, const char *);
pid_t pgp_invoke_sign(FILE **, FILE **, FILE **, int, int, int, const char *);
pid_t pgp_invoke_encrypt(FILE **, FILE **, FILE **, int, int, int, const char *, const char *, int);
void  pgp_invoke_extract(const char *);
pid_t pgp_invoke_verify_key(FILE **, FILE **, FILE **, int, int, int, const char *);
pid_t pgp_invoke_extract_key(FILE **, FILE **, FILE **, int, int, int, const char *);


#endif /* _PGPPATH */