lib/stringprep.h.in

   1 /* stringprep.h         Header file for stringprep functions.         -*- c -*-
   2  * Copyright (C) 2002, 2003  Simon Josefsson
   3  *
   4  * This file is part of GNU Libidn.
   5  *
   6  * GNU Libidn is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * GNU Libidn is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with GNU Libidn; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #ifndef _STRINGPREP_H
  23 #define _STRINGPREP_H
  24
  25 #ifdef __cplusplus
  26 extern "C"
  27 {
  28 #endif
  29
  30 #include <stddef.h>             /* size_t */
  31 #include <unistd.h>             /* ssize_t */
  32 #include <idn-int.h>            /* uint32_t */
  33
  34 #define STRINGPREP_VERSION "@PACKAGE_VERSION@"
  35
  36 /* Error codes. */
  37   typedef enum
  38   {
  39     STRINGPREP_OK = 0,
  40     /* Stringprep errors. */
  41     STRINGPREP_CONTAINS_UNASSIGNED = 1,
  42     STRINGPREP_CONTAINS_PROHIBITED = 2,
  43     STRINGPREP_BIDI_BOTH_L_AND_RAL = 3,
  44     STRINGPREP_BIDI_LEADTRAIL_NOT_RAL = 4,
  45     STRINGPREP_BIDI_CONTAINS_PROHIBITED = 5,
  46     /* Error in calling application. */
  47     STRINGPREP_TOO_SMALL_BUFFER = 100,
  48     STRINGPREP_PROFILE_ERROR = 101,
  49     STRINGPREP_FLAG_ERROR = 102,
  50     STRINGPREP_UNKNOWN_PROFILE = 103,
  51     /* Internal errors. */
  52     STRINGPREP_NFKC_FAILED = 200,
  53     STRINGPREP_MALLOC_ERROR = 201
  54   } Stringprep_rc;
  55
  56 /* Flags used when calling stringprep(). */
  57   typedef enum
  58   {
  59     STRINGPREP_NO_NFKC = 1,
  60     STRINGPREP_NO_BIDI = 2,
  61     STRINGPREP_NO_UNASSIGNED = 4
  62   } Stringprep_profile_flags;
  63
  64 /* Steps in a stringprep profile. */
  65   typedef enum
  66   {
  67     STRINGPREP_NFKC = 1,
  68     STRINGPREP_BIDI = 2,
  69     STRINGPREP_MAP_TABLE = 3,
  70     STRINGPREP_UNASSIGNED_TABLE = 4,
  71     STRINGPREP_PROHIBIT_TABLE = 5,
  72     STRINGPREP_BIDI_PROHIBIT_TABLE = 6,
  73     STRINGPREP_BIDI_RAL_TABLE = 7,
  74     STRINGPREP_BIDI_L_TABLE = 8
  75   } Stringprep_profile_steps;
  76
  77 #define STRINGPREP_MAX_MAP_CHARS 4
  78
  79   struct Stringprep_table_element
  80   {
  81     uint32_t start;
  82     uint32_t end;               /* 0 if only one character */
  83     uint32_t map[STRINGPREP_MAX_MAP_CHARS];     /* NULL if end is not 0 */
  84   };
  85   typedef struct Stringprep_table_element Stringprep_table_element;
  86
  87   struct Stringprep_table
  88   {
  89     Stringprep_profile_steps operation;
  90     Stringprep_profile_flags flags;
  91     Stringprep_table_element *table;
  92     char *name;
  93   };
  94   typedef struct Stringprep_table Stringprep_profile;
  95
  96   struct Stringprep_profiles
  97   {
  98     char *name;
  99     Stringprep_profile *tables;
 100   };
 101   typedef struct Stringprep_profiles Stringprep_profiles;
 102
 103   extern Stringprep_profiles stringprep_profiles[];
 104
 105 /* Profiles */
 106   extern Stringprep_table_element stringprep_rfc3454_A_1[];
 107   extern Stringprep_table_element stringprep_rfc3454_B_1[];
 108   extern Stringprep_table_element stringprep_rfc3454_B_2[];
 109   extern Stringprep_table_element stringprep_rfc3454_B_3[];
 110   extern Stringprep_table_element stringprep_rfc3454_C_1_1[];
 111   extern Stringprep_table_element stringprep_rfc3454_C_1_2[];
 112   extern Stringprep_table_element stringprep_rfc3454_C_2_1[];
 113   extern Stringprep_table_element stringprep_rfc3454_C_2_2[];
 114   extern Stringprep_table_element stringprep_rfc3454_C_3[];
 115   extern Stringprep_table_element stringprep_rfc3454_C_4[];
 116   extern Stringprep_table_element stringprep_rfc3454_C_5[];
 117   extern Stringprep_table_element stringprep_rfc3454_C_6[];
 118   extern Stringprep_table_element stringprep_rfc3454_C_7[];
 119   extern Stringprep_table_element stringprep_rfc3454_C_8[];
 120   extern Stringprep_table_element stringprep_rfc3454_C_9[];
 121   extern Stringprep_table_element stringprep_rfc3454_D_1[];
 122   extern Stringprep_table_element stringprep_rfc3454_D_2[];
 123
 124   /* Generic (for debugging) */
 125
 126   extern Stringprep_profile stringprep_generic[];
 127
 128 #define stringprep_generic(in, maxlen)          \
 129   stringprep(in, maxlen, 0, stringprep_generic)
 130
 131   /* Nameprep */
 132
 133   extern Stringprep_profile stringprep_nameprep[];
 134
 135 #define stringprep_nameprep(in, maxlen)                 \
 136   stringprep(in, maxlen, 0, stringprep_nameprep)
 137
 138 #define stringprep_nameprep_no_unassigned(in, maxlen)                   \
 139   stringprep(in, maxlen, STRINGPREP_NO_UNASSIGNED, stringprep_nameprep)
 140
 141   /* SASL */
 142
 143   extern Stringprep_profile stringprep_saslprep[];
 144   extern Stringprep_profile stringprep_plain[];
 145
 146 #define stringprep_plain(in, maxlen)            \
 147   stringprep(in, maxlen, 0, stringprep_plain)
 148
 149   /* Kerberos */
 150
 151   extern Stringprep_profile stringprep_kerberos5[];
 152
 153 #define stringprep_kerberos5(in, maxlen)                \
 154   stringprep(in, maxlen, 0, stringprep_kerberos5)
 155
 156   /* XMPP */
 157
 158   extern Stringprep_profile stringprep_xmpp_nodeprep[];
 159   extern Stringprep_profile stringprep_xmpp_resourceprep[];
 160   extern Stringprep_table_element stringprep_xmpp_nodeprep_prohibit[];
 161
 162 #define stringprep_xmpp_nodeprep(in, maxlen)            \
 163   stringprep(in, maxlen, 0, stringprep_xmpp_nodeprep)
 164 #define stringprep_xmpp_resourceprep(in, maxlen)                \
 165   stringprep(in, maxlen, 0, stringprep_xmpp_resourceprep)
 166
 167   /* iSCSI */
 168
 169   extern Stringprep_profile stringprep_iscsi[];
 170
 171 #define stringprep_iscsi(in, maxlen)            \
 172   stringprep(in, maxlen, 0, stringprep_iscsi)
 173
 174   /* API */
 175
 176   extern int stringprep (char *in, size_t maxlen,
 177                          Stringprep_profile_flags flags,
 178                          Stringprep_profile * profile);
 179
 180   extern int stringprep_profile (char *in,
 181                                  char **out,
 182                                  char *profile,
 183                                  Stringprep_profile_flags flags);
 184
 185   extern const char *stringprep_check_version (const char *req_version);
 186
 187 /* Utility */
 188
 189   extern int stringprep_unichar_to_utf8 (uint32_t c, char *outbuf);
 190   extern uint32_t stringprep_utf8_to_unichar (const char *p);
 191
 192   extern uint32_t *stringprep_utf8_to_ucs4 (const char *str, ssize_t len,
 193                                             size_t * items_written);
 194   extern char *stringprep_ucs4_to_utf8 (const uint32_t * str, ssize_t len,
 195                                         size_t * items_read,
 196                                         size_t * items_written);
 197
 198   extern char *stringprep_utf8_nfkc_normalize (const char *str, ssize_t len);
 199   extern uint32_t *stringprep_ucs4_nfkc_normalize (uint32_t * str,
 200                                                    ssize_t len);
 201
 202   extern const char *stringprep_locale_charset (void);
 203   extern char *stringprep_convert (const char *str,
 204                                    const char *to_codeset,
 205                                    const char *from_codeset);
 206   extern char *stringprep_locale_to_utf8 (const char *str);
 207   extern char *stringprep_utf8_to_locale (const char *str);
 208
 209 #ifdef __cplusplus
 210 }
 211 #endif
 212 #endif                          /* _STRINGPREP_H */