contrib/dhcp-3.0/dst/dst_internal.h

   1 #ifndef DST_INTERNAL_H
   2 #define DST_INTERNAL_H
   3
   4 /*
   5  * Portions Copyright (c) 1995-1998 by Trusted Information Systems, Inc.
   6  *
   7  * Permission to use, copy modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND TRUSTED INFORMATION SYSTEMS
  12  * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
  13  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL
  14  * TRUSTED INFORMATION SYSTEMS BE LIABLE FOR ANY SPECIAL, DIRECT,
  15  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
  16  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  17  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  18  * WITH THE USE OR PERFORMANCE OF THE SOFTWARE.
  19  */
  20 #include <limits.h>
  21 #include <sys/param.h>
  22
  23 #ifndef PATH_MAX
  24 # ifdef POSIX_PATH_MAX
  25 #  define PATH_MAX POSIX_PATH_MAX
  26 # else
  27 #  define PATH_MAX 255 /* this is the value of POSIX_PATH_MAX */
  28 # endif
  29 #endif
  30
  31 typedef struct dst_key {
  32         char    *dk_key_name;   /* name of the key */
  33         int     dk_key_size;    /* this is the size of the key in bits */
  34         int     dk_proto;       /* what protocols this key can be used for */
  35         int     dk_alg;         /* algorithm number from key record */
  36         unsigned dk_flags;     /* and the flags of the public key */
  37         unsigned dk_id;        /* identifier of the key */
  38         void    *dk_KEY_struct; /* pointer to key in crypto pkg fmt */
  39         struct dst_func *dk_func; /* point to cryptto pgk specific function table */
  40 } DST_KEY;
  41 #define HAS_DST_KEY
  42
  43 #include <isc-dhcp/dst.h>
  44 /*
  45  * define what crypto systems are supported for RSA,
  46  * BSAFE is prefered over RSAREF; only one can be set at any time
  47  */
  48 #if defined(BSAFE) && defined(RSAREF)
  49 # error "Cannot have both BSAFE and RSAREF defined"
  50 #endif
  51
  52 /* Declare dst_lib specific constants */
  53 #define KEY_FILE_FORMAT "1.2"
  54
  55 /* suffixes for key file names */
  56 #define PRIVATE_KEY             "private"
  57 #define PUBLIC_KEY              "key"
  58
  59 /* error handling */
  60 #ifdef REPORT_ERRORS
  61 #define EREPORT(str)            printf str
  62 #else
  63 #define EREPORT(str)
  64 #endif
  65
  66 /* use our own special macro to FRRE memory */
  67
  68 #ifndef SAFE_FREE
  69 #define SAFE_FREE(a) if(a != NULL){memset(a,0, sizeof(*a)); free(a); a=NULL;}
  70 #define SAFE_FREE2(a,s) if (a != NULL && s > 0){memset(a,0, s);free(a); a=NULL;}
  71 #endif
  72
  73 typedef struct dst_func {
  74         int (*sign)(const int mode, DST_KEY *key, void **context,
  75                      const u_int8_t *data, const unsigned len,
  76                      u_int8_t *signature, const unsigned sig_len);
  77         int (*verify)(const int mode, DST_KEY *key, void **context,
  78                        const u_int8_t *data, const unsigned len,
  79                        const u_int8_t *signature, const unsigned sig_len);
  80         int (*compare)(const DST_KEY *key1, const DST_KEY *key2);
  81         int (*generate)(DST_KEY *key, int parms);
  82         void *(*destroy)(void *key);
  83         /* conversion functions */
  84         int (*to_dns_key)(const DST_KEY *key, u_int8_t *out,
  85                           const unsigned out_len);
  86         int (*from_dns_key)(DST_KEY *key, const u_int8_t *str,
  87                             const unsigned str_len);
  88         int (*to_file_fmt)(const DST_KEY *key, char *out,
  89                             const unsigned out_len);
  90         int (*from_file_fmt)(DST_KEY *key, const char *out,
  91                               const unsigned out_len);
  92
  93 } dst_func;
  94
  95 extern dst_func *dst_t_func[DST_MAX_ALGS];
  96 extern const char *key_file_fmt_str;
  97 extern const char *dst_path;
  98
  99 #ifndef DST_HASH_SIZE
 100 #define DST_HASH_SIZE 20        /* RIPEMD160 and SHA-1 are 20 bytes MD5 is 16 */
 101 #endif
 102
 103 #if 0
 104 int dst_bsafe_init(void);
 105 int dst_rsaref_init(void);
 106 #endif
 107
 108 int dst_hmac_md5_init(void);
 109
 110 #if 0
 111 int dst_cylink_init(void);
 112 int dst_eay_dss_init(void);
 113 #endif
 114
 115 /* support functions */
 116 /* base64 to bignum conversion routines */
 117 int       dst_s_conv_bignum_u8_to_b64( char *out_buf, const unsigned out_len,
 118                                        const char *header,
 119                                        const u_int8_t *bin_data,
 120                                        const unsigned bin_len);
 121 int       dst_s_conv_bignum_b64_to_u8( const char **buf, u_int8_t *loc,
 122                                        const unsigned loclen) ;
 123 /* from higher level support routines */
 124 int       dst_s_calculate_bits( const u_int8_t *str, const int max_bits);
 125 int       dst_s_verify_str( const char **buf, const char *str);
 126
 127
 128 /* conversion between dns names and key file names */
 129 size_t    dst_s_filename_length( const char *name, const char *suffix);
 130 int       dst_s_build_filename(  char *filename, const char *name,
 131                                  unsigned id, int alg, const char *suffix,
 132                                  size_t filename_length);
 133
 134 FILE      *dst_s_fopen (const char *filename, const char *mode, unsigned perm);
 135
 136 /* from file prandom.c */
 137 int       dst_s_random( u_int8_t *output, unsigned size);
 138 int       dst_s_semi_random( u_int8_t *output, unsigned size);
 139 u_int32_t dst_s_quick_random( int inc);
 140 void      dst_s_quick_random_set( u_int32_t val, u_int32_t cnt);
 141
 142 /*
 143  * read and write network byte order into u_int?_t
 144  *  all of these should be retired
 145  */
 146 u_int16_t dst_s_get_int16( const u_int8_t *buf);
 147 void      dst_s_put_int16( u_int8_t *buf, const u_int16_t val);
 148
 149 u_int32_t dst_s_get_int32( const u_int8_t *buf);
 150 void      dst_s_put_int32( u_int8_t *buf, const u_int32_t val);
 151
 152 #ifdef DUMP
 153 # undef DUMP
 154 # define DUMP(a,b,c,d) dst_s_dump(a,b,c,d)
 155 #else
 156 # define DUMP(a,b,c,d)
 157 #endif
 158
 159
 160 #endif /* DST_INTERNAL_H */