1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 |
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23 | #include "curl_setup.h"
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24 |
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25 | #if !defined(CURL_DISABLE_LDAP) && !defined(USE_OPENLDAP)
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26 |
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27 | /*
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28 | * Notice that USE_OPENLDAP is only a source code selection switch. When
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29 | * libcurl is built with USE_OPENLDAP defined the libcurl source code that
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30 | * gets compiled is the code from openldap.c, otherwise the code that gets
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31 | * compiled is the code from ldap.c.
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32 | *
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33 | * When USE_OPENLDAP is defined a recent version of the OpenLDAP library
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34 | * might be required for compilation and runtime. In order to use ancient
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35 | * OpenLDAP library versions, USE_OPENLDAP shall not be defined.
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36 | */
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37 |
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38 | #ifdef USE_WIN32_LDAP /* Use Windows LDAP implementation. */
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39 | # include <winldap.h>
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40 | # ifndef LDAP_VENDOR_NAME
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41 | # error Your Platform SDK is NOT sufficient for LDAP support! \
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42 | Update your Platform SDK, or disable LDAP support!
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43 | # else
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44 | # include <winber.h>
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45 | # endif
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46 | #else
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47 | # define LDAP_DEPRECATED 1 /* Be sure ldap_init() is defined. */
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48 | # ifdef HAVE_LBER_H
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49 | # include <lber.h>
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50 | # endif
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51 | # include <ldap.h>
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52 | # if (defined(HAVE_LDAP_SSL) && defined(HAVE_LDAP_SSL_H))
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53 | # include <ldap_ssl.h>
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54 | # endif /* HAVE_LDAP_SSL && HAVE_LDAP_SSL_H */
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55 | #endif
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56 |
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57 | /* These are macros in both <wincrypt.h> (in above <winldap.h>) and typedefs
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58 | * in BoringSSL's <openssl/x509.h>
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59 | */
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60 | #ifdef HAVE_BORINGSSL
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61 | # undef X509_NAME
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62 | # undef X509_CERT_PAIR
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63 | # undef X509_EXTENSIONS
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64 | #endif
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65 |
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66 | #include "urldata.h"
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67 | #include <curl/curl.h>
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68 | #include "sendf.h"
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69 | #include "escape.h"
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70 | #include "progress.h"
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71 | #include "transfer.h"
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72 | #include "strcase.h"
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73 | #include "strtok.h"
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74 | #include "curl_ldap.h"
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75 | #include "curl_multibyte.h"
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76 | #include "curl_base64.h"
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77 | #include "connect.h"
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78 | /* The last 3 #include files should be in this order */
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79 | #include "curl_printf.h"
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80 | #include "curl_memory.h"
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81 | #include "memdebug.h"
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82 |
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83 | #ifndef HAVE_LDAP_URL_PARSE
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84 |
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85 | /* Use our own implementation. */
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86 |
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87 | typedef struct {
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88 | char *lud_host;
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89 | int lud_port;
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90 | #if defined(USE_WIN32_LDAP)
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91 | TCHAR *lud_dn;
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92 | TCHAR **lud_attrs;
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93 | #else
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94 | char *lud_dn;
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95 | char **lud_attrs;
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96 | #endif
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97 | int lud_scope;
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98 | #if defined(USE_WIN32_LDAP)
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99 | TCHAR *lud_filter;
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100 | #else
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101 | char *lud_filter;
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102 | #endif
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103 | char **lud_exts;
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104 | size_t lud_attrs_dups; /* how many were dup'ed, this field is not in the
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105 | "real" struct so can only be used in code
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106 | without HAVE_LDAP_URL_PARSE defined */
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107 | } CURL_LDAPURLDesc;
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108 |
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109 | #undef LDAPURLDesc
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110 | #define LDAPURLDesc CURL_LDAPURLDesc
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111 |
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112 | static int _ldap_url_parse(const struct connectdata *conn,
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113 | LDAPURLDesc **ludp);
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114 | static void _ldap_free_urldesc(LDAPURLDesc *ludp);
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115 |
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116 | #undef ldap_free_urldesc
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117 | #define ldap_free_urldesc _ldap_free_urldesc
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118 | #endif
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119 |
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120 | #ifdef DEBUG_LDAP
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121 | #define LDAP_TRACE(x) do { \
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122 | _ldap_trace("%u: ", __LINE__); \
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123 | _ldap_trace x; \
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124 | } WHILE_FALSE
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125 |
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126 | static void _ldap_trace(const char *fmt, ...);
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127 | #else
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128 | #define LDAP_TRACE(x) Curl_nop_stmt
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129 | #endif
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130 |
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131 |
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132 | static CURLcode Curl_ldap(struct connectdata *conn, bool *done);
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133 |
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134 | /*
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135 | * LDAP protocol handler.
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136 | */
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137 |
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138 | const struct Curl_handler Curl_handler_ldap = {
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139 | "LDAP", /* scheme */
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140 | ZERO_NULL, /* setup_connection */
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141 | Curl_ldap, /* do_it */
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142 | ZERO_NULL, /* done */
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143 | ZERO_NULL, /* do_more */
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144 | ZERO_NULL, /* connect_it */
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145 | ZERO_NULL, /* connecting */
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146 | ZERO_NULL, /* doing */
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147 | ZERO_NULL, /* proto_getsock */
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148 | ZERO_NULL, /* doing_getsock */
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149 | ZERO_NULL, /* domore_getsock */
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150 | ZERO_NULL, /* perform_getsock */
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151 | ZERO_NULL, /* disconnect */
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152 | ZERO_NULL, /* readwrite */
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153 | ZERO_NULL, /* connection_check */
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154 | PORT_LDAP, /* defport */
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155 | CURLPROTO_LDAP, /* protocol */
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156 | PROTOPT_NONE /* flags */
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157 | };
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158 |
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159 | #ifdef HAVE_LDAP_SSL
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160 | /*
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161 | * LDAPS protocol handler.
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162 | */
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163 |
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164 | const struct Curl_handler Curl_handler_ldaps = {
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165 | "LDAPS", /* scheme */
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166 | ZERO_NULL, /* setup_connection */
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167 | Curl_ldap, /* do_it */
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168 | ZERO_NULL, /* done */
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169 | ZERO_NULL, /* do_more */
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170 | ZERO_NULL, /* connect_it */
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171 | ZERO_NULL, /* connecting */
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172 | ZERO_NULL, /* doing */
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173 | ZERO_NULL, /* proto_getsock */
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174 | ZERO_NULL, /* doing_getsock */
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175 | ZERO_NULL, /* domore_getsock */
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176 | ZERO_NULL, /* perform_getsock */
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177 | ZERO_NULL, /* disconnect */
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178 | ZERO_NULL, /* readwrite */
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179 | ZERO_NULL, /* connection_check */
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180 | PORT_LDAPS, /* defport */
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181 | CURLPROTO_LDAPS, /* protocol */
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182 | PROTOPT_SSL /* flags */
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183 | };
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184 | #endif
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185 |
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186 | #if defined(USE_WIN32_LDAP)
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187 |
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188 | #if defined(USE_WINDOWS_SSPI)
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189 | static int ldap_win_bind_auth(LDAP *server, const char *user,
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190 | const char *passwd, unsigned long authflags)
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191 | {
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192 | ULONG method = 0;
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193 | SEC_WINNT_AUTH_IDENTITY cred;
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194 | int rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
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195 |
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196 | memset(&cred, 0, sizeof(cred));
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197 |
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198 | #if defined(USE_SPNEGO)
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199 | if(authflags & CURLAUTH_NEGOTIATE) {
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200 | method = LDAP_AUTH_NEGOTIATE;
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201 | }
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202 | else
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203 | #endif
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204 | #if defined(USE_NTLM)
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205 | if(authflags & CURLAUTH_NTLM) {
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206 | method = LDAP_AUTH_NTLM;
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207 | }
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208 | else
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209 | #endif
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210 | #if !defined(CURL_DISABLE_CRYPTO_AUTH)
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211 | if(authflags & CURLAUTH_DIGEST) {
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212 | method = LDAP_AUTH_DIGEST;
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213 | }
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214 | else
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215 | #endif
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216 | {
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217 | /* required anyway if one of upper preprocessor definitions enabled */
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218 | }
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219 |
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220 | if(method && user && passwd) {
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221 | rc = Curl_create_sspi_identity(user, passwd, &cred);
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222 | if(!rc) {
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223 | rc = ldap_bind_s(server, NULL, (TCHAR *)&cred, method);
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224 | Curl_sspi_free_identity(&cred);
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225 | }
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226 | }
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227 | else {
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228 | /* proceed with current user credentials */
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229 | method = LDAP_AUTH_NEGOTIATE;
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230 | rc = ldap_bind_s(server, NULL, NULL, method);
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231 | }
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232 | return rc;
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233 | }
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234 | #endif /* #if defined(USE_WINDOWS_SSPI) */
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235 |
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236 | static int ldap_win_bind(struct connectdata *conn, LDAP *server,
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237 | const char *user, const char *passwd)
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238 | {
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239 | int rc = LDAP_INVALID_CREDENTIALS;
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240 |
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241 | PTCHAR inuser = NULL;
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242 | PTCHAR inpass = NULL;
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243 |
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244 | if(user && passwd && (conn->data->set.httpauth & CURLAUTH_BASIC)) {
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245 | inuser = Curl_convert_UTF8_to_tchar((char *) user);
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246 | inpass = Curl_convert_UTF8_to_tchar((char *) passwd);
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247 |
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248 | rc = ldap_simple_bind_s(server, inuser, inpass);
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249 |
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250 | Curl_unicodefree(inuser);
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251 | Curl_unicodefree(inpass);
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252 | }
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253 | #if defined(USE_WINDOWS_SSPI)
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254 | else {
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255 | rc = ldap_win_bind_auth(server, user, passwd, conn->data->set.httpauth);
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256 | }
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257 | #endif
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258 |
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259 | return rc;
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260 | }
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261 | #endif /* #if defined(USE_WIN32_LDAP) */
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262 |
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263 | static CURLcode Curl_ldap(struct connectdata *conn, bool *done)
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264 | {
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265 | CURLcode result = CURLE_OK;
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266 | int rc = 0;
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267 | LDAP *server = NULL;
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268 | LDAPURLDesc *ludp = NULL;
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269 | LDAPMessage *ldapmsg = NULL;
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270 | LDAPMessage *entryIterator;
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271 | int num = 0;
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272 | struct Curl_easy *data = conn->data;
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273 | int ldap_proto = LDAP_VERSION3;
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274 | int ldap_ssl = 0;
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275 | char *val_b64 = NULL;
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276 | size_t val_b64_sz = 0;
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277 | curl_off_t dlsize = 0;
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278 | #ifdef LDAP_OPT_NETWORK_TIMEOUT
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279 | struct timeval ldap_timeout = {10, 0}; /* 10 sec connection/search timeout */
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280 | #endif
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281 | #if defined(USE_WIN32_LDAP)
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282 | TCHAR *host = NULL;
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283 | #else
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284 | char *host = NULL;
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285 | #endif
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286 | char *user = NULL;
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287 | char *passwd = NULL;
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288 |
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289 | *done = TRUE; /* unconditionally */
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290 | infof(data, "LDAP local: LDAP Vendor = %s ; LDAP Version = %d\n",
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291 | LDAP_VENDOR_NAME, LDAP_VENDOR_VERSION);
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292 | infof(data, "LDAP local: %s\n", data->change.url);
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293 |
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294 | #ifdef HAVE_LDAP_URL_PARSE
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295 | rc = ldap_url_parse(data->change.url, &ludp);
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296 | #else
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297 | rc = _ldap_url_parse(conn, &ludp);
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298 | #endif
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299 | if(rc != 0) {
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300 | failf(data, "LDAP local: %s", ldap_err2string(rc));
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301 | result = CURLE_LDAP_INVALID_URL;
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302 | goto quit;
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303 | }
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304 |
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305 | /* Get the URL scheme (either ldap or ldaps) */
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306 | if(conn->given->flags & PROTOPT_SSL)
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307 | ldap_ssl = 1;
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308 | infof(data, "LDAP local: trying to establish %s connection\n",
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309 | ldap_ssl ? "encrypted" : "cleartext");
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310 |
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311 | #if defined(USE_WIN32_LDAP)
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312 | host = Curl_convert_UTF8_to_tchar(conn->host.name);
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313 | if(!host) {
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314 | result = CURLE_OUT_OF_MEMORY;
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315 |
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316 | goto quit;
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317 | }
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318 | #else
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319 | host = conn->host.name;
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320 | #endif
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321 |
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322 | if(conn->bits.user_passwd) {
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323 | user = conn->user;
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324 | passwd = conn->passwd;
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325 | }
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326 |
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327 | #ifdef LDAP_OPT_NETWORK_TIMEOUT
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328 | ldap_set_option(NULL, LDAP_OPT_NETWORK_TIMEOUT, &ldap_timeout);
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329 | #endif
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330 | ldap_set_option(NULL, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
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331 |
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332 | if(ldap_ssl) {
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333 | #ifdef HAVE_LDAP_SSL
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334 | #ifdef USE_WIN32_LDAP
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335 | /* Win32 LDAP SDK doesn't support insecure mode without CA! */
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336 | server = ldap_sslinit(host, (int)conn->port, 1);
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337 | ldap_set_option(server, LDAP_OPT_SSL, LDAP_OPT_ON);
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338 | #else
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339 | int ldap_option;
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340 | char *ldap_ca = conn->ssl_config.CAfile;
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341 | #if defined(CURL_HAS_NOVELL_LDAPSDK)
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342 | rc = ldapssl_client_init(NULL, NULL);
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343 | if(rc != LDAP_SUCCESS) {
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344 | failf(data, "LDAP local: ldapssl_client_init %s", ldap_err2string(rc));
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345 | result = CURLE_SSL_CERTPROBLEM;
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346 | goto quit;
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347 | }
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348 | if(conn->ssl_config.verifypeer) {
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349 | /* Novell SDK supports DER or BASE64 files. */
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350 | int cert_type = LDAPSSL_CERT_FILETYPE_B64;
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351 | if((data->set.ssl.cert_type) &&
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352 | (strcasecompare(data->set.ssl.cert_type, "DER")))
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353 | cert_type = LDAPSSL_CERT_FILETYPE_DER;
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354 | if(!ldap_ca) {
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355 | failf(data, "LDAP local: ERROR %s CA cert not set!",
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356 | (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"));
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357 | result = CURLE_SSL_CERTPROBLEM;
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358 | goto quit;
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359 | }
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360 | infof(data, "LDAP local: using %s CA cert '%s'\n",
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361 | (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"),
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362 | ldap_ca);
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363 | rc = ldapssl_add_trusted_cert(ldap_ca, cert_type);
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364 | if(rc != LDAP_SUCCESS) {
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365 | failf(data, "LDAP local: ERROR setting %s CA cert: %s",
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366 | (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"),
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367 | ldap_err2string(rc));
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368 | result = CURLE_SSL_CERTPROBLEM;
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369 | goto quit;
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370 | }
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371 | ldap_option = LDAPSSL_VERIFY_SERVER;
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372 | }
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373 | else
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374 | ldap_option = LDAPSSL_VERIFY_NONE;
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375 | rc = ldapssl_set_verify_mode(ldap_option);
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376 | if(rc != LDAP_SUCCESS) {
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377 | failf(data, "LDAP local: ERROR setting cert verify mode: %s",
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378 | ldap_err2string(rc));
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379 | result = CURLE_SSL_CERTPROBLEM;
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380 | goto quit;
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381 | }
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382 | server = ldapssl_init(host, (int)conn->port, 1);
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383 | if(server == NULL) {
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384 | failf(data, "LDAP local: Cannot connect to %s:%ld",
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385 | conn->host.dispname, conn->port);
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386 | result = CURLE_COULDNT_CONNECT;
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387 | goto quit;
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388 | }
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389 | #elif defined(LDAP_OPT_X_TLS)
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390 | if(conn->ssl_config.verifypeer) {
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391 | /* OpenLDAP SDK supports BASE64 files. */
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392 | if((data->set.ssl.cert_type) &&
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393 | (!strcasecompare(data->set.ssl.cert_type, "PEM"))) {
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394 | failf(data, "LDAP local: ERROR OpenLDAP only supports PEM cert-type!");
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395 | result = CURLE_SSL_CERTPROBLEM;
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396 | goto quit;
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397 | }
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398 | if(!ldap_ca) {
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399 | failf(data, "LDAP local: ERROR PEM CA cert not set!");
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400 | result = CURLE_SSL_CERTPROBLEM;
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401 | goto quit;
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402 | }
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403 | infof(data, "LDAP local: using PEM CA cert: %s\n", ldap_ca);
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404 | rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTFILE, ldap_ca);
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405 | if(rc != LDAP_SUCCESS) {
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406 | failf(data, "LDAP local: ERROR setting PEM CA cert: %s",
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407 | ldap_err2string(rc));
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408 | result = CURLE_SSL_CERTPROBLEM;
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409 | goto quit;
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410 | }
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411 | ldap_option = LDAP_OPT_X_TLS_DEMAND;
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412 | }
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413 | else
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414 | ldap_option = LDAP_OPT_X_TLS_NEVER;
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415 |
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416 | rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT, &ldap_option);
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417 | if(rc != LDAP_SUCCESS) {
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418 | failf(data, "LDAP local: ERROR setting cert verify mode: %s",
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419 | ldap_err2string(rc));
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420 | result = CURLE_SSL_CERTPROBLEM;
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421 | goto quit;
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422 | }
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423 | server = ldap_init(host, (int)conn->port);
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424 | if(server == NULL) {
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425 | failf(data, "LDAP local: Cannot connect to %s:%ld",
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426 | conn->host.dispname, conn->port);
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427 | result = CURLE_COULDNT_CONNECT;
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428 | goto quit;
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429 | }
|
---|
430 | ldap_option = LDAP_OPT_X_TLS_HARD;
|
---|
431 | rc = ldap_set_option(server, LDAP_OPT_X_TLS, &ldap_option);
|
---|
432 | if(rc != LDAP_SUCCESS) {
|
---|
433 | failf(data, "LDAP local: ERROR setting SSL/TLS mode: %s",
|
---|
434 | ldap_err2string(rc));
|
---|
435 | result = CURLE_SSL_CERTPROBLEM;
|
---|
436 | goto quit;
|
---|
437 | }
|
---|
438 | /*
|
---|
439 | rc = ldap_start_tls_s(server, NULL, NULL);
|
---|
440 | if(rc != LDAP_SUCCESS) {
|
---|
441 | failf(data, "LDAP local: ERROR starting SSL/TLS mode: %s",
|
---|
442 | ldap_err2string(rc));
|
---|
443 | result = CURLE_SSL_CERTPROBLEM;
|
---|
444 | goto quit;
|
---|
445 | }
|
---|
446 | */
|
---|
447 | #else
|
---|
448 | /* we should probably never come up to here since configure
|
---|
449 | should check in first place if we can support LDAP SSL/TLS */
|
---|
450 | failf(data, "LDAP local: SSL/TLS not supported with this version "
|
---|
451 | "of the OpenLDAP toolkit\n");
|
---|
452 | result = CURLE_SSL_CERTPROBLEM;
|
---|
453 | goto quit;
|
---|
454 | #endif
|
---|
455 | #endif
|
---|
456 | #endif /* CURL_LDAP_USE_SSL */
|
---|
457 | }
|
---|
458 | else {
|
---|
459 | server = ldap_init(host, (int)conn->port);
|
---|
460 | if(server == NULL) {
|
---|
461 | failf(data, "LDAP local: Cannot connect to %s:%ld",
|
---|
462 | conn->host.dispname, conn->port);
|
---|
463 | result = CURLE_COULDNT_CONNECT;
|
---|
464 | goto quit;
|
---|
465 | }
|
---|
466 | }
|
---|
467 | #ifdef USE_WIN32_LDAP
|
---|
468 | ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
|
---|
469 | #endif
|
---|
470 |
|
---|
471 | #ifdef USE_WIN32_LDAP
|
---|
472 | rc = ldap_win_bind(conn, server, user, passwd);
|
---|
473 | #else
|
---|
474 | rc = ldap_simple_bind_s(server, user, passwd);
|
---|
475 | #endif
|
---|
476 | if(!ldap_ssl && rc != 0) {
|
---|
477 | ldap_proto = LDAP_VERSION2;
|
---|
478 | ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
|
---|
479 | #ifdef USE_WIN32_LDAP
|
---|
480 | rc = ldap_win_bind(conn, server, user, passwd);
|
---|
481 | #else
|
---|
482 | rc = ldap_simple_bind_s(server, user, passwd);
|
---|
483 | #endif
|
---|
484 | }
|
---|
485 | if(rc != 0) {
|
---|
486 | failf(data, "LDAP local: ldap_simple_bind_s %s", ldap_err2string(rc));
|
---|
487 | result = CURLE_LDAP_CANNOT_BIND;
|
---|
488 | goto quit;
|
---|
489 | }
|
---|
490 |
|
---|
491 | rc = ldap_search_s(server, ludp->lud_dn, ludp->lud_scope,
|
---|
492 | ludp->lud_filter, ludp->lud_attrs, 0, &ldapmsg);
|
---|
493 |
|
---|
494 | if(rc != 0 && rc != LDAP_SIZELIMIT_EXCEEDED) {
|
---|
495 | failf(data, "LDAP remote: %s", ldap_err2string(rc));
|
---|
496 | result = CURLE_LDAP_SEARCH_FAILED;
|
---|
497 | goto quit;
|
---|
498 | }
|
---|
499 |
|
---|
500 | for(num = 0, entryIterator = ldap_first_entry(server, ldapmsg);
|
---|
501 | entryIterator;
|
---|
502 | entryIterator = ldap_next_entry(server, entryIterator), num++) {
|
---|
503 | BerElement *ber = NULL;
|
---|
504 | #if defined(USE_WIN32_LDAP)
|
---|
505 | TCHAR *attribute;
|
---|
506 | #else
|
---|
507 | char *attribute; /*! suspicious that this isn't 'const' */
|
---|
508 | #endif
|
---|
509 | int i;
|
---|
510 |
|
---|
511 | /* Get the DN and write it to the client */
|
---|
512 | {
|
---|
513 | char *name;
|
---|
514 | size_t name_len;
|
---|
515 | #if defined(USE_WIN32_LDAP)
|
---|
516 | TCHAR *dn = ldap_get_dn(server, entryIterator);
|
---|
517 | name = Curl_convert_tchar_to_UTF8(dn);
|
---|
518 | if(!name) {
|
---|
519 | ldap_memfree(dn);
|
---|
520 |
|
---|
521 | result = CURLE_OUT_OF_MEMORY;
|
---|
522 |
|
---|
523 | goto quit;
|
---|
524 | }
|
---|
525 | #else
|
---|
526 | char *dn = name = ldap_get_dn(server, entryIterator);
|
---|
527 | #endif
|
---|
528 | name_len = strlen(name);
|
---|
529 |
|
---|
530 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"DN: ", 4);
|
---|
531 | if(result) {
|
---|
532 | #if defined(USE_WIN32_LDAP)
|
---|
533 | Curl_unicodefree(name);
|
---|
534 | #endif
|
---|
535 | ldap_memfree(dn);
|
---|
536 |
|
---|
537 | goto quit;
|
---|
538 | }
|
---|
539 |
|
---|
540 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *) name,
|
---|
541 | name_len);
|
---|
542 | if(result) {
|
---|
543 | #if defined(USE_WIN32_LDAP)
|
---|
544 | Curl_unicodefree(name);
|
---|
545 | #endif
|
---|
546 | ldap_memfree(dn);
|
---|
547 |
|
---|
548 | goto quit;
|
---|
549 | }
|
---|
550 |
|
---|
551 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
|
---|
552 | if(result) {
|
---|
553 | #if defined(USE_WIN32_LDAP)
|
---|
554 | Curl_unicodefree(name);
|
---|
555 | #endif
|
---|
556 | ldap_memfree(dn);
|
---|
557 |
|
---|
558 | goto quit;
|
---|
559 | }
|
---|
560 |
|
---|
561 | dlsize += name_len + 5;
|
---|
562 |
|
---|
563 | #if defined(USE_WIN32_LDAP)
|
---|
564 | Curl_unicodefree(name);
|
---|
565 | #endif
|
---|
566 | ldap_memfree(dn);
|
---|
567 | }
|
---|
568 |
|
---|
569 | /* Get the attributes and write them to the client */
|
---|
570 | for(attribute = ldap_first_attribute(server, entryIterator, &ber);
|
---|
571 | attribute;
|
---|
572 | attribute = ldap_next_attribute(server, entryIterator, ber)) {
|
---|
573 | BerValue **vals;
|
---|
574 | size_t attr_len;
|
---|
575 | #if defined(USE_WIN32_LDAP)
|
---|
576 | char *attr = Curl_convert_tchar_to_UTF8(attribute);
|
---|
577 | if(!attr) {
|
---|
578 | if(ber)
|
---|
579 | ber_free(ber, 0);
|
---|
580 |
|
---|
581 | result = CURLE_OUT_OF_MEMORY;
|
---|
582 |
|
---|
583 | goto quit;
|
---|
584 | }
|
---|
585 | #else
|
---|
586 | char *attr = attribute;
|
---|
587 | #endif
|
---|
588 | attr_len = strlen(attr);
|
---|
589 |
|
---|
590 | vals = ldap_get_values_len(server, entryIterator, attribute);
|
---|
591 | if(vals != NULL) {
|
---|
592 | for(i = 0; (vals[i] != NULL); i++) {
|
---|
593 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\t", 1);
|
---|
594 | if(result) {
|
---|
595 | ldap_value_free_len(vals);
|
---|
596 | #if defined(USE_WIN32_LDAP)
|
---|
597 | Curl_unicodefree(attr);
|
---|
598 | #endif
|
---|
599 | ldap_memfree(attribute);
|
---|
600 | if(ber)
|
---|
601 | ber_free(ber, 0);
|
---|
602 |
|
---|
603 | goto quit;
|
---|
604 | }
|
---|
605 |
|
---|
606 | result = Curl_client_write(conn, CLIENTWRITE_BODY,
|
---|
607 | (char *) attr, attr_len);
|
---|
608 | if(result) {
|
---|
609 | ldap_value_free_len(vals);
|
---|
610 | #if defined(USE_WIN32_LDAP)
|
---|
611 | Curl_unicodefree(attr);
|
---|
612 | #endif
|
---|
613 | ldap_memfree(attribute);
|
---|
614 | if(ber)
|
---|
615 | ber_free(ber, 0);
|
---|
616 |
|
---|
617 | goto quit;
|
---|
618 | }
|
---|
619 |
|
---|
620 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)": ", 2);
|
---|
621 | if(result) {
|
---|
622 | ldap_value_free_len(vals);
|
---|
623 | #if defined(USE_WIN32_LDAP)
|
---|
624 | Curl_unicodefree(attr);
|
---|
625 | #endif
|
---|
626 | ldap_memfree(attribute);
|
---|
627 | if(ber)
|
---|
628 | ber_free(ber, 0);
|
---|
629 |
|
---|
630 | goto quit;
|
---|
631 | }
|
---|
632 |
|
---|
633 | dlsize += attr_len + 3;
|
---|
634 |
|
---|
635 | if((attr_len > 7) &&
|
---|
636 | (strcmp(";binary", (char *) attr + (attr_len - 7)) == 0)) {
|
---|
637 | /* Binary attribute, encode to base64. */
|
---|
638 | result = Curl_base64_encode(data,
|
---|
639 | vals[i]->bv_val,
|
---|
640 | vals[i]->bv_len,
|
---|
641 | &val_b64,
|
---|
642 | &val_b64_sz);
|
---|
643 | if(result) {
|
---|
644 | ldap_value_free_len(vals);
|
---|
645 | #if defined(USE_WIN32_LDAP)
|
---|
646 | Curl_unicodefree(attr);
|
---|
647 | #endif
|
---|
648 | ldap_memfree(attribute);
|
---|
649 | if(ber)
|
---|
650 | ber_free(ber, 0);
|
---|
651 |
|
---|
652 | goto quit;
|
---|
653 | }
|
---|
654 |
|
---|
655 | if(val_b64_sz > 0) {
|
---|
656 | result = Curl_client_write(conn, CLIENTWRITE_BODY, val_b64,
|
---|
657 | val_b64_sz);
|
---|
658 | free(val_b64);
|
---|
659 | if(result) {
|
---|
660 | ldap_value_free_len(vals);
|
---|
661 | #if defined(USE_WIN32_LDAP)
|
---|
662 | Curl_unicodefree(attr);
|
---|
663 | #endif
|
---|
664 | ldap_memfree(attribute);
|
---|
665 | if(ber)
|
---|
666 | ber_free(ber, 0);
|
---|
667 |
|
---|
668 | goto quit;
|
---|
669 | }
|
---|
670 |
|
---|
671 | dlsize += val_b64_sz;
|
---|
672 | }
|
---|
673 | }
|
---|
674 | else {
|
---|
675 | result = Curl_client_write(conn, CLIENTWRITE_BODY, vals[i]->bv_val,
|
---|
676 | vals[i]->bv_len);
|
---|
677 | if(result) {
|
---|
678 | ldap_value_free_len(vals);
|
---|
679 | #if defined(USE_WIN32_LDAP)
|
---|
680 | Curl_unicodefree(attr);
|
---|
681 | #endif
|
---|
682 | ldap_memfree(attribute);
|
---|
683 | if(ber)
|
---|
684 | ber_free(ber, 0);
|
---|
685 |
|
---|
686 | goto quit;
|
---|
687 | }
|
---|
688 |
|
---|
689 | dlsize += vals[i]->bv_len;
|
---|
690 | }
|
---|
691 |
|
---|
692 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
|
---|
693 | if(result) {
|
---|
694 | ldap_value_free_len(vals);
|
---|
695 | #if defined(USE_WIN32_LDAP)
|
---|
696 | Curl_unicodefree(attr);
|
---|
697 | #endif
|
---|
698 | ldap_memfree(attribute);
|
---|
699 | if(ber)
|
---|
700 | ber_free(ber, 0);
|
---|
701 |
|
---|
702 | goto quit;
|
---|
703 | }
|
---|
704 |
|
---|
705 | dlsize++;
|
---|
706 | }
|
---|
707 |
|
---|
708 | /* Free memory used to store values */
|
---|
709 | ldap_value_free_len(vals);
|
---|
710 | }
|
---|
711 |
|
---|
712 | /* Free the attribute as we are done with it */
|
---|
713 | #if defined(USE_WIN32_LDAP)
|
---|
714 | Curl_unicodefree(attr);
|
---|
715 | #endif
|
---|
716 | ldap_memfree(attribute);
|
---|
717 |
|
---|
718 | result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
|
---|
719 | if(result)
|
---|
720 | goto quit;
|
---|
721 | dlsize++;
|
---|
722 | Curl_pgrsSetDownloadCounter(data, dlsize);
|
---|
723 | }
|
---|
724 |
|
---|
725 | if(ber)
|
---|
726 | ber_free(ber, 0);
|
---|
727 | }
|
---|
728 |
|
---|
729 | quit:
|
---|
730 | if(ldapmsg) {
|
---|
731 | ldap_msgfree(ldapmsg);
|
---|
732 | LDAP_TRACE(("Received %d entries\n", num));
|
---|
733 | }
|
---|
734 | if(rc == LDAP_SIZELIMIT_EXCEEDED)
|
---|
735 | infof(data, "There are more than %d entries\n", num);
|
---|
736 | if(ludp)
|
---|
737 | ldap_free_urldesc(ludp);
|
---|
738 | if(server)
|
---|
739 | ldap_unbind_s(server);
|
---|
740 | #if defined(HAVE_LDAP_SSL) && defined(CURL_HAS_NOVELL_LDAPSDK)
|
---|
741 | if(ldap_ssl)
|
---|
742 | ldapssl_client_deinit();
|
---|
743 | #endif /* HAVE_LDAP_SSL && CURL_HAS_NOVELL_LDAPSDK */
|
---|
744 |
|
---|
745 | #if defined(USE_WIN32_LDAP)
|
---|
746 | Curl_unicodefree(host);
|
---|
747 | #endif
|
---|
748 |
|
---|
749 | /* no data to transfer */
|
---|
750 | Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
---|
751 | connclose(conn, "LDAP connection always disable re-use");
|
---|
752 |
|
---|
753 | return result;
|
---|
754 | }
|
---|
755 |
|
---|
756 | #ifdef DEBUG_LDAP
|
---|
757 | static void _ldap_trace(const char *fmt, ...)
|
---|
758 | {
|
---|
759 | static int do_trace = -1;
|
---|
760 | va_list args;
|
---|
761 |
|
---|
762 | if(do_trace == -1) {
|
---|
763 | const char *env = getenv("CURL_TRACE");
|
---|
764 | do_trace = (env && strtol(env, NULL, 10) > 0);
|
---|
765 | }
|
---|
766 | if(!do_trace)
|
---|
767 | return;
|
---|
768 |
|
---|
769 | va_start(args, fmt);
|
---|
770 | vfprintf(stderr, fmt, args);
|
---|
771 | va_end(args);
|
---|
772 | }
|
---|
773 | #endif
|
---|
774 |
|
---|
775 | #ifndef HAVE_LDAP_URL_PARSE
|
---|
776 |
|
---|
777 | /*
|
---|
778 | * Return scope-value for a scope-string.
|
---|
779 | */
|
---|
780 | static int str2scope(const char *p)
|
---|
781 | {
|
---|
782 | if(strcasecompare(p, "one"))
|
---|
783 | return LDAP_SCOPE_ONELEVEL;
|
---|
784 | if(strcasecompare(p, "onetree"))
|
---|
785 | return LDAP_SCOPE_ONELEVEL;
|
---|
786 | if(strcasecompare(p, "base"))
|
---|
787 | return LDAP_SCOPE_BASE;
|
---|
788 | if(strcasecompare(p, "sub"))
|
---|
789 | return LDAP_SCOPE_SUBTREE;
|
---|
790 | if(strcasecompare(p, "subtree"))
|
---|
791 | return LDAP_SCOPE_SUBTREE;
|
---|
792 | return (-1);
|
---|
793 | }
|
---|
794 |
|
---|
795 | /*
|
---|
796 | * Split 'str' into strings separated by commas.
|
---|
797 | * Note: out[] points into 'str'.
|
---|
798 | */
|
---|
799 | static bool split_str(char *str, char ***out, size_t *count)
|
---|
800 | {
|
---|
801 | char **res;
|
---|
802 | char *lasts;
|
---|
803 | char *s;
|
---|
804 | size_t i;
|
---|
805 | size_t items = 1;
|
---|
806 |
|
---|
807 | s = strchr(str, ',');
|
---|
808 | while(s) {
|
---|
809 | items++;
|
---|
810 | s = strchr(++s, ',');
|
---|
811 | }
|
---|
812 |
|
---|
813 | res = calloc(items, sizeof(char *));
|
---|
814 | if(!res)
|
---|
815 | return FALSE;
|
---|
816 |
|
---|
817 | for(i = 0, s = strtok_r(str, ",", &lasts); s && i < items;
|
---|
818 | s = strtok_r(NULL, ",", &lasts), i++)
|
---|
819 | res[i] = s;
|
---|
820 |
|
---|
821 | *out = res;
|
---|
822 | *count = items;
|
---|
823 |
|
---|
824 | return TRUE;
|
---|
825 | }
|
---|
826 |
|
---|
827 | /*
|
---|
828 | * Break apart the pieces of an LDAP URL.
|
---|
829 | * Syntax:
|
---|
830 | * ldap://<hostname>:<port>/<base_dn>?<attributes>?<scope>?<filter>?<ext>
|
---|
831 | *
|
---|
832 | * <hostname> already known from 'conn->host.name'.
|
---|
833 | * <port> already known from 'conn->remote_port'.
|
---|
834 | * extract the rest from 'conn->data->state.path+1'. All fields are optional.
|
---|
835 | * e.g.
|
---|
836 | * ldap://<hostname>:<port>/?<attributes>?<scope>?<filter>
|
---|
837 | * yields ludp->lud_dn = "".
|
---|
838 | *
|
---|
839 | * Defined in RFC4516 section 2.
|
---|
840 | */
|
---|
841 | static int _ldap_url_parse2(const struct connectdata *conn, LDAPURLDesc *ludp)
|
---|
842 | {
|
---|
843 | int rc = LDAP_SUCCESS;
|
---|
844 | char *path;
|
---|
845 | char *p;
|
---|
846 | char *q;
|
---|
847 | size_t i;
|
---|
848 |
|
---|
849 | if(!conn->data ||
|
---|
850 | !conn->data->state.path ||
|
---|
851 | conn->data->state.path[0] != '/' ||
|
---|
852 | !checkprefix("LDAP", conn->data->change.url))
|
---|
853 | return LDAP_INVALID_SYNTAX;
|
---|
854 |
|
---|
855 | ludp->lud_scope = LDAP_SCOPE_BASE;
|
---|
856 | ludp->lud_port = conn->remote_port;
|
---|
857 | ludp->lud_host = conn->host.name;
|
---|
858 |
|
---|
859 | /* Duplicate the path */
|
---|
860 | p = path = strdup(conn->data->state.path + 1);
|
---|
861 | if(!path)
|
---|
862 | return LDAP_NO_MEMORY;
|
---|
863 |
|
---|
864 | /* Parse the DN (Distinguished Name) */
|
---|
865 | q = strchr(p, '?');
|
---|
866 | if(q)
|
---|
867 | *q++ = '\0';
|
---|
868 |
|
---|
869 | if(*p) {
|
---|
870 | char *dn = p;
|
---|
871 | char *unescaped;
|
---|
872 | CURLcode result;
|
---|
873 |
|
---|
874 | LDAP_TRACE(("DN '%s'\n", dn));
|
---|
875 |
|
---|
876 | /* Unescape the DN */
|
---|
877 | result = Curl_urldecode(conn->data, dn, 0, &unescaped, NULL, FALSE);
|
---|
878 | if(result) {
|
---|
879 | rc = LDAP_NO_MEMORY;
|
---|
880 |
|
---|
881 | goto quit;
|
---|
882 | }
|
---|
883 |
|
---|
884 | #if defined(USE_WIN32_LDAP)
|
---|
885 | /* Convert the unescaped string to a tchar */
|
---|
886 | ludp->lud_dn = Curl_convert_UTF8_to_tchar(unescaped);
|
---|
887 |
|
---|
888 | /* Free the unescaped string as we are done with it */
|
---|
889 | Curl_unicodefree(unescaped);
|
---|
890 |
|
---|
891 | if(!ludp->lud_dn) {
|
---|
892 | rc = LDAP_NO_MEMORY;
|
---|
893 |
|
---|
894 | goto quit;
|
---|
895 | }
|
---|
896 | #else
|
---|
897 | ludp->lud_dn = unescaped;
|
---|
898 | #endif
|
---|
899 | }
|
---|
900 |
|
---|
901 | p = q;
|
---|
902 | if(!p)
|
---|
903 | goto quit;
|
---|
904 |
|
---|
905 | /* Parse the attributes. skip "??" */
|
---|
906 | q = strchr(p, '?');
|
---|
907 | if(q)
|
---|
908 | *q++ = '\0';
|
---|
909 |
|
---|
910 | if(*p) {
|
---|
911 | char **attributes;
|
---|
912 | size_t count = 0;
|
---|
913 |
|
---|
914 | /* Split the string into an array of attributes */
|
---|
915 | if(!split_str(p, &attributes, &count)) {
|
---|
916 | rc = LDAP_NO_MEMORY;
|
---|
917 |
|
---|
918 | goto quit;
|
---|
919 | }
|
---|
920 |
|
---|
921 | /* Allocate our array (+1 for the NULL entry) */
|
---|
922 | #if defined(USE_WIN32_LDAP)
|
---|
923 | ludp->lud_attrs = calloc(count + 1, sizeof(TCHAR *));
|
---|
924 | #else
|
---|
925 | ludp->lud_attrs = calloc(count + 1, sizeof(char *));
|
---|
926 | #endif
|
---|
927 | if(!ludp->lud_attrs) {
|
---|
928 | free(attributes);
|
---|
929 |
|
---|
930 | rc = LDAP_NO_MEMORY;
|
---|
931 |
|
---|
932 | goto quit;
|
---|
933 | }
|
---|
934 |
|
---|
935 | for(i = 0; i < count; i++) {
|
---|
936 | char *unescaped;
|
---|
937 | CURLcode result;
|
---|
938 |
|
---|
939 | LDAP_TRACE(("attr[%d] '%s'\n", i, attributes[i]));
|
---|
940 |
|
---|
941 | /* Unescape the attribute */
|
---|
942 | result = Curl_urldecode(conn->data, attributes[i], 0, &unescaped, NULL,
|
---|
943 | FALSE);
|
---|
944 | if(result) {
|
---|
945 | free(attributes);
|
---|
946 |
|
---|
947 | rc = LDAP_NO_MEMORY;
|
---|
948 |
|
---|
949 | goto quit;
|
---|
950 | }
|
---|
951 |
|
---|
952 | #if defined(USE_WIN32_LDAP)
|
---|
953 | /* Convert the unescaped string to a tchar */
|
---|
954 | ludp->lud_attrs[i] = Curl_convert_UTF8_to_tchar(unescaped);
|
---|
955 |
|
---|
956 | /* Free the unescaped string as we are done with it */
|
---|
957 | Curl_unicodefree(unescaped);
|
---|
958 |
|
---|
959 | if(!ludp->lud_attrs[i]) {
|
---|
960 | free(attributes);
|
---|
961 |
|
---|
962 | rc = LDAP_NO_MEMORY;
|
---|
963 |
|
---|
964 | goto quit;
|
---|
965 | }
|
---|
966 | #else
|
---|
967 | ludp->lud_attrs[i] = unescaped;
|
---|
968 | #endif
|
---|
969 |
|
---|
970 | ludp->lud_attrs_dups++;
|
---|
971 | }
|
---|
972 |
|
---|
973 | free(attributes);
|
---|
974 | }
|
---|
975 |
|
---|
976 | p = q;
|
---|
977 | if(!p)
|
---|
978 | goto quit;
|
---|
979 |
|
---|
980 | /* Parse the scope. skip "??" */
|
---|
981 | q = strchr(p, '?');
|
---|
982 | if(q)
|
---|
983 | *q++ = '\0';
|
---|
984 |
|
---|
985 | if(*p) {
|
---|
986 | ludp->lud_scope = str2scope(p);
|
---|
987 | if(ludp->lud_scope == -1) {
|
---|
988 | rc = LDAP_INVALID_SYNTAX;
|
---|
989 |
|
---|
990 | goto quit;
|
---|
991 | }
|
---|
992 | LDAP_TRACE(("scope %d\n", ludp->lud_scope));
|
---|
993 | }
|
---|
994 |
|
---|
995 | p = q;
|
---|
996 | if(!p)
|
---|
997 | goto quit;
|
---|
998 |
|
---|
999 | /* Parse the filter */
|
---|
1000 | q = strchr(p, '?');
|
---|
1001 | if(q)
|
---|
1002 | *q++ = '\0';
|
---|
1003 |
|
---|
1004 | if(*p) {
|
---|
1005 | char *filter = p;
|
---|
1006 | char *unescaped;
|
---|
1007 | CURLcode result;
|
---|
1008 |
|
---|
1009 | LDAP_TRACE(("filter '%s'\n", filter));
|
---|
1010 |
|
---|
1011 | /* Unescape the filter */
|
---|
1012 | result = Curl_urldecode(conn->data, filter, 0, &unescaped, NULL, FALSE);
|
---|
1013 | if(result) {
|
---|
1014 | rc = LDAP_NO_MEMORY;
|
---|
1015 |
|
---|
1016 | goto quit;
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | #if defined(USE_WIN32_LDAP)
|
---|
1020 | /* Convert the unescaped string to a tchar */
|
---|
1021 | ludp->lud_filter = Curl_convert_UTF8_to_tchar(unescaped);
|
---|
1022 |
|
---|
1023 | /* Free the unescaped string as we are done with it */
|
---|
1024 | Curl_unicodefree(unescaped);
|
---|
1025 |
|
---|
1026 | if(!ludp->lud_filter) {
|
---|
1027 | rc = LDAP_NO_MEMORY;
|
---|
1028 |
|
---|
1029 | goto quit;
|
---|
1030 | }
|
---|
1031 | #else
|
---|
1032 | ludp->lud_filter = unescaped;
|
---|
1033 | #endif
|
---|
1034 | }
|
---|
1035 |
|
---|
1036 | p = q;
|
---|
1037 | if(p && !*p) {
|
---|
1038 | rc = LDAP_INVALID_SYNTAX;
|
---|
1039 |
|
---|
1040 | goto quit;
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | quit:
|
---|
1044 | free(path);
|
---|
1045 |
|
---|
1046 | return rc;
|
---|
1047 | }
|
---|
1048 |
|
---|
1049 | static int _ldap_url_parse(const struct connectdata *conn,
|
---|
1050 | LDAPURLDesc **ludpp)
|
---|
1051 | {
|
---|
1052 | LDAPURLDesc *ludp = calloc(1, sizeof(*ludp));
|
---|
1053 | int rc;
|
---|
1054 |
|
---|
1055 | *ludpp = NULL;
|
---|
1056 | if(!ludp)
|
---|
1057 | return LDAP_NO_MEMORY;
|
---|
1058 |
|
---|
1059 | rc = _ldap_url_parse2(conn, ludp);
|
---|
1060 | if(rc != LDAP_SUCCESS) {
|
---|
1061 | _ldap_free_urldesc(ludp);
|
---|
1062 | ludp = NULL;
|
---|
1063 | }
|
---|
1064 | *ludpp = ludp;
|
---|
1065 | return (rc);
|
---|
1066 | }
|
---|
1067 |
|
---|
1068 | static void _ldap_free_urldesc(LDAPURLDesc *ludp)
|
---|
1069 | {
|
---|
1070 | size_t i;
|
---|
1071 |
|
---|
1072 | if(!ludp)
|
---|
1073 | return;
|
---|
1074 |
|
---|
1075 | free(ludp->lud_dn);
|
---|
1076 | free(ludp->lud_filter);
|
---|
1077 |
|
---|
1078 | if(ludp->lud_attrs) {
|
---|
1079 | for(i = 0; i < ludp->lud_attrs_dups; i++)
|
---|
1080 | free(ludp->lud_attrs[i]);
|
---|
1081 | free(ludp->lud_attrs);
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 | free(ludp);
|
---|
1085 | }
|
---|
1086 | #endif /* !HAVE_LDAP_URL_PARSE */
|
---|
1087 | #endif /* !CURL_DISABLE_LDAP && !USE_OPENLDAP */
|
---|