1 /* 2 * Copyright (c) 2004, 2006, 2008 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 #ifdef HAVE_CONFIG_H 35 #include <config.h> 36 #endif 37 #include "windlocl.h" 38 #include <stdlib.h> 39 #include <string.h> 40 #include <errno.h> 41 42 /** 43 * Process a input UCS4 string according a string-prep profile. 44 * 45 * @param in input UCS4 string to process 46 * @param in_len length of the input string 47 * @param out output UCS4 string 48 * @param out_len length of the output string. 49 * @param flags stringprep profile. 50 * 51 * @return returns 0 on success, an wind error code otherwise 52 * @ingroup wind 53 */ 54 55 int 56 wind_stringprep(const uint32_t *in, size_t in_len, 57 uint32_t *out, size_t *out_len, 58 wind_profile_flags flags) 59 { 60 size_t tmp_len = in_len * 3; 61 uint32_t *tmp; 62 int ret; 63 size_t olen; 64 65 if (in_len == 0) { 66 *out_len = 0; 67 return 0; 68 } 69 70 tmp = malloc(tmp_len * sizeof(uint32_t)); 71 if (tmp == NULL) 72 return ENOMEM; 73 74 ret = _wind_stringprep_map(in, in_len, tmp, &tmp_len, flags); 75 if (ret) { 76 free(tmp); 77 return ret; 78 } 79 80 olen = *out_len; 81 ret = _wind_stringprep_normalize(tmp, tmp_len, tmp, &olen); 82 if (ret) { 83 free(tmp); 84 return ret; 85 } 86 ret = _wind_stringprep_prohibited(tmp, olen, flags); 87 if (ret) { 88 free(tmp); 89 return ret; 90 } 91 ret = _wind_stringprep_testbidi(tmp, olen, flags); 92 if (ret) { 93 free(tmp); 94 return ret; 95 } 96 97 /* Insignificant Character Handling for ldap-prep */ 98 if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ATTRIBUTE) { 99 ret = _wind_ldap_case_exact_attribute(tmp, olen, out, out_len); 100 #if 0 101 } else if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ASSERTION) { 102 } else if (flags & WIND_PROFILE_LDAP_NUMERIC) { 103 } else if (flags & WIND_PROFILE_LDAP_TELEPHONE) { 104 #endif 105 } else { 106 memcpy(out, tmp, sizeof(out[0]) * olen); 107 *out_len = olen; 108 } 109 free(tmp); 110 111 return ret; 112 } 113 114 static const struct { 115 const char *name; 116 wind_profile_flags flags; 117 } profiles[] = { 118 { "nameprep", WIND_PROFILE_NAME }, 119 { "saslprep", WIND_PROFILE_SASL }, 120 { "ldapprep", WIND_PROFILE_LDAP } 121 }; 122 123 /** 124 * Try to find the profile given a name. 125 * 126 * @param name name of the profile. 127 * @param flags the resulting profile. 128 * 129 * @return returns 0 on success, an wind error code otherwise 130 * @ingroup wind 131 */ 132 133 int 134 wind_profile(const char *name, wind_profile_flags *flags) 135 { 136 unsigned int i; 137 138 for (i = 0; i < sizeof(profiles)/sizeof(profiles[0]); i++) { 139 if (strcasecmp(profiles[i].name, name) == 0) { 140 *flags = profiles[i].flags; 141 return 0; 142 } 143 } 144 return WIND_ERR_NO_PROFILE; 145 } 146