contrib/opie/opie.h

   1 /* opie.h: Data structures and values for the OPIE authentication
   2         system that a program might need.
   3
   4 %%% portions-copyright-cmetz-96
   5 Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
   6 Reserved. The Inner Net License Version 2 applies to these portions of
   7 the software.
   8 You should have received a copy of the license with this software. If
   9 you didn't get a copy, you may request one from <license@inner.net>.
  10
  11 Portions of this software are Copyright 1995 by Randall Atkinson and Dan
  12 McDonald, All Rights Reserved. All Rights under this copyright are assigned
  13 to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and
  14 License Agreement applies to this software.
  15
  16         History:
  17
  18         Modified by cmetz for OPIE 2.4. Added sequence number limits. Added
  19                 struct opie_otpkey and made many functions use it. Added
  20                 opiestrncpy(). Include header with libmissing prototypes.
  21         Modified by cmetz for OPIE 2.32. Added symbolic flag names for
  22                 opiepasswd(). Added __opieparsechallenge() prototype.
  23         Modified by cmetz for OPIE 2.31. Removed active attack protection.
  24         Modified by cmetz for OPIE 2.3. Renamed PTR to VOIDPTR. Added
  25                 re-init key and extension file fields to struct opie. Added
  26                 opie_ prefix on struct opie members. Added opie_flags field
  27                 and definitions. Added more prototypes. Changed opiehash()
  28                 prototype.
  29         Modified by cmetz for OPIE 2.22. Define __P correctly if this file
  30                 is included in a third-party program.
  31         Modified by cmetz for OPIE 2.2. Re-did prototypes. Added FUNCTION
  32                 definition et al. Multiple-include protection. Added struct
  33                 utsname fake. Got rid of gethostname() cruft. Moved UINT4
  34                 here. Provide for *seek whence values. Move MDx context here
  35                 and unify. Re-did prototypes.
  36         Modified at NRL for OPIE 2.0.
  37         Written at Bellcore for the S/Key Version 1 software distribution
  38                 (skey.h).
  39
  40 $FreeBSD: head/contrib/opie/opie.h 269809 2014-08-11 13:36:02Z ache $
  41 */
  42 #ifndef _OPIE_H
  43 #define _OPIE_H 1
  44
  45 struct opie {
  46   int opie_flags;
  47   char opie_buf[256];
  48   char *opie_principal;
  49   int opie_n;
  50   char *opie_seed;
  51   char *opie_val;
  52   long opie_recstart;
  53 };
  54
  55 #define __OPIE_FLAGS_RW 1
  56 #define __OPIE_FLAGS_READ 2
  57
  58 /* Minimum length of a secret password */
  59 #ifndef OPIE_SECRET_MIN
  60 #define OPIE_SECRET_MIN 10
  61 #endif  /* OPIE_SECRET_MIN */
  62
  63 /* Maximum length of a secret password */
  64 #define OPIE_SECRET_MAX 127
  65
  66 /* Minimum length of a seed */
  67 #define OPIE_SEED_MIN 5
  68
  69 /* Maximum length of a seed */
  70 #define OPIE_SEED_MAX 16
  71
  72 /* Max length of hash algorithm name (md4/md5/sha1) */
  73 #define OPIE_HASHNAME_MAX 4
  74
  75 /* Maximum length of a challenge (otp-md? 9999 seed ext) */
  76 #define OPIE_CHALLENGE_MAX (4+OPIE_HASHNAME_MAX+1+4+1+OPIE_SEED_MAX+1+3)
  77
  78 /* Maximum length of a response that we allow */
  79 #define OPIE_RESPONSE_MAX (9+1+19+1+9+OPIE_SEED_MAX+1+19+1+19+1+19)
  80
  81 /* Maximum length of a principal (read: user name) */
  82 #define OPIE_PRINCIPAL_MAX 32
  83
  84 /* Maximum sequence number */
  85 #ifndef OPIE_SEQUENCE_MAX
  86 #define OPIE_SEQUENCE_MAX 9999
  87 #endif /* OPIE_SEQUENCE_MAX */
  88
  89 /* Restricted sequence number */
  90 #ifndef OPIE_SEQUENCE_RESTRICT
  91 #define OPIE_SEQUENCE_RESTRICT 9
  92 #endif /* OPIE_SEQUENCE_RESTRICT */
  93
  94 #define UINT4 u_int32_t
  95
  96 struct opie_otpkey {
  97         UINT4 words[2];
  98 };
  99
 100 #ifndef SEEK_SET
 101 #define SEEK_SET 0
 102 #endif /* SEEK_SET */
 103
 104 #ifndef SEEK_END
 105 #define SEEK_END 2
 106 #endif /* SEEK_END */
 107
 108 __BEGIN_DECLS
 109 int  opieaccessfile(char *);
 110 int  rdnets(long);
 111 int  isaddr(register char *);
 112 int  opiealways(char *);
 113 char *opieatob8(struct opie_otpkey *, char *);
 114 void opiebackspace(char *);
 115 char *opiebtoa8(char *, struct opie_otpkey *);
 116 char *opiebtoe(char *, struct opie_otpkey *);
 117 char *opiebtoh(char *, struct opie_otpkey *);
 118 int  opieetob(struct opie_otpkey *, char *);
 119 int  opiechallenge(struct opie *,char *,char *);
 120 int  opiegenerator(char *,char *,char *);
 121 int  opiegetsequence(struct opie *);
 122 void opiehash(struct opie_otpkey *, unsigned);
 123 int  opiehtoi(register char);
 124 int  opiekeycrunch(int, struct opie_otpkey *, char *, char *);
 125 int  opielock(char *);
 126 int  opieunlock(void);
 127 void opieunlockaeh(void);
 128 void opiedisableaeh(void);
 129 int  opielookup(struct opie *,char *);
 130 int  opiepasscheck(char *);
 131 int  opienewseed(char *);
 132 void opierandomchallenge(char *);
 133 char * opieskipspace(register char *);
 134 void opiestripcrlf(char *);
 135 int  opieverify(struct opie *,char *);
 136 int opiepasswd(struct opie *, int, char *, int, char *, char *);
 137 char *opiereadpass(char *, int, int);
 138 int opielogin(char *line, char *name, char *host);
 139 const char *opie_get_algorithm(void);
 140 int  opie_haskey(char *username);
 141 char *opie_keyinfo(char *);
 142 int  opie_passverify(char *username, char *passwd);
 143 int  opieinsecure(void);
 144 void opieversion(void);
 145 __END_DECLS
 146
 147 #if _OPIE
 148 #define VOIDPTR void *
 149 #define VOIDRET void
 150 #define NOARGS  void
 151 #define FUNCTION(arglist, args) (args)
 152 #define AND ,
 153 #define FUNCTION_NOARGS ()
 154
 155 __BEGIN_DECLS
 156 struct utmp;
 157 int __opiegetutmpentry(char *, struct utmp *);
 158 #ifdef EOF
 159 FILE *__opieopen(char *, int, int);
 160 #endif /* EOF */
 161 int __opiereadrec(struct opie *);
 162 int __opiewriterec(struct opie *);
 163 int __opieparsechallenge(char *buffer, int *algorithm, int *sequence, char **seed, int *exts);
 164 void opiehashlen(int algorithm, void *in, struct opie_otpkey *out, int n);
 165 __END_DECLS
 166
 167 #define opiestrncpy(dst, src, n) \
 168   do { \
 169     strncpy(dst, src, n-1); \
 170     dst[n-1] = 0; \
 171   } while(0)
 172
 173 /* #include "missing.h" */
 174 #endif /* _OPIE */
 175
 176 #define OPIEPASSWD_CONSOLE 1
 177 #define OPIEPASSWD_FORCE   2
 178
 179 #endif /* _OPIE_H */