crypto/heimdal-0.6.3/appl/ftp/ftp/security.h

   1 /*
   2  * Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id: security.h,v 1.9.12.1 2003/08/20 16:41:53 lha Exp $ */
  35
  36 #ifndef __security_h__
  37 #define __security_h__
  38
  39 enum protection_level {
  40     prot_clear,
  41     prot_safe,
  42     prot_confidential,
  43     prot_private
  44 };
  45
  46 struct sec_client_mech {
  47     char *name;
  48     size_t size;
  49     int (*init)(void *);
  50     int (*auth)(void *, char*);
  51     void (*end)(void *);
  52     int (*check_prot)(void *, int);
  53     int (*overhead)(void *, int, int);
  54     int (*encode)(void *, void*, int, int, void**);
  55     int (*decode)(void *, void*, int, int);
  56 };
  57
  58 struct sec_server_mech {
  59     char *name;
  60     size_t size;
  61     int (*init)(void *);
  62     void (*end)(void *);
  63     int (*check_prot)(void *, int);
  64     int (*overhead)(void *, int, int);
  65     int (*encode)(void *, void*, int, int, void**);
  66     int (*decode)(void *, void*, int, int);
  67
  68     int (*auth)(void *);
  69     int (*adat)(void *, void*, size_t);
  70     size_t (*pbsz)(void *, size_t);
  71     int (*ccc)(void*);
  72     int (*userok)(void*, char*);
  73 };
  74
  75 #define AUTH_OK         0
  76 #define AUTH_CONTINUE   1
  77 #define AUTH_ERROR      2
  78
  79 extern int ftp_do_gss_bindings;
  80 #ifdef FTP_SERVER
  81 extern struct sec_server_mech krb4_server_mech, gss_server_mech;
  82 #else
  83 extern struct sec_client_mech krb4_client_mech, gss_client_mech;
  84 #endif
  85
  86 extern int sec_complete;
  87
  88 #ifdef FTP_SERVER
  89 extern char *ftp_command;
  90 void new_ftp_command(char*);
  91 void delete_ftp_command(void);
  92 #endif
  93
  94 /* ---- */
  95
  96
  97 int sec_fflush (FILE *);
  98 int sec_fprintf (FILE *, const char *, ...)
  99     __attribute__ ((format (printf, 2,3)));
 100 int sec_getc (FILE *);
 101 int sec_putc (int, FILE *);
 102 int sec_read (int, void *, int);
 103 int sec_read_msg (char *, int);
 104 int sec_vfprintf (FILE *, const char *, va_list)
 105     __attribute__ ((format (printf, 2,0)));
 106 int sec_fprintf2(FILE *f, const char *fmt, ...)
 107     __attribute__ ((format (printf, 2,3)));
 108 int sec_vfprintf2(FILE *, const char *, va_list)
 109     __attribute__ ((format (printf, 2,0)));
 110 int sec_write (int, char *, int);
 111
 112 #ifdef FTP_SERVER
 113 void adat (char *);
 114 void auth (char *);
 115 void ccc (void);
 116 void mec (char *, enum protection_level);
 117 void pbsz (int);
 118 void prot (char *);
 119 void delete_ftp_command (void);
 120 void new_ftp_command (char *);
 121 int sec_userok (char *);
 122 int secure_command (void);
 123 enum protection_level get_command_prot(void);
 124 #else
 125 void sec_end (void);
 126 int sec_login (char *);
 127 void sec_prot (int, char **);
 128 int sec_request_prot (char *);
 129 void sec_set_protection_level (void);
 130 void sec_status (void);
 131
 132 enum protection_level set_command_prot(enum protection_level);
 133
 134 #endif
 135
 136 #endif /* __security_h__ */