annotate cinst/windowsstore.c @ 570:c9d296f04995

Inform the user when logging fails.
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 23 May 2014 16:16:33 +0000
parents 3cf72c5282e8
children 736e95c63b86
rev   line source
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1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #ifdef WIN32
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9
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10 #include <stdio.h>
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11
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12 #include "windowsstore.h"
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13 #include "errorcodes.h"
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14 #include "listutil.h"
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15 #include "strhelp.h"
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16 #include "logging.h"
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17 #include "util.h"
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18
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19 static PCCERT_CONTEXT
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20 b64_to_cert_context(char *b64_data, size_t b64_size)
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21 {
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22 size_t buf_size = 0;
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23 char *buf = NULL;
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24 PCCERT_CONTEXT pCert = NULL;
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25 int ret = -1;
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26
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27 ret = str_base64_decode (&buf, &buf_size, b64_data, b64_size);
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28
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29 if (ret != 0)
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30 {
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31 printf ("decoding certificate failed\n");
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32 return NULL;
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33 }
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34
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35 pCert = CertCreateContext (CERT_STORE_CERTIFICATE_CONTEXT,
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36 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
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37 (const PBYTE) buf,
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38 (DWORD) buf_size,
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39 0,
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40 NULL);
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41 free (buf); /* Windows has a copy */
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42
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43 if (pCert == NULL)
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44 {
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45 char *error = getLastErrorMsg();
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46 if (error)
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47 {
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48 printf ("Failed to create cert context: %s \n", error);
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49 free (error);
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50 }
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51 return NULL;
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52 }
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53 return pCert;
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54 }
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55
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56 void
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57 do_remove(HCERTSTORE hStore, char **to_remove)
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58 {
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59 PCCERT_CONTEXT pCert = NULL;
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60 unsigned int i = 0;
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61
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62 if (!to_remove)
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63 {
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64 return;
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65 }
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66
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67 for (i=0; to_remove[i]; i++)
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68 {
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69 PCCERT_CONTEXT pc_to_remove = NULL;
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70
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71 pc_to_remove = b64_to_cert_context(to_remove[i],
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72 strnlen(to_remove[i], MAX_LINE_LENGTH));
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73
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74 if (pc_to_remove == NULL)
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75 {
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76 char *error = getLastErrorMsg();
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77 if (error)
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78 {
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79 printf ("Failed to create cert context: %s \n", error);
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80 free (error);
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81 }
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82 continue;
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83 }
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84
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85 pCert = CertFindCertificateInStore (hStore,
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8fb12af98960 According to MSDN you Must also provide message encoding flag.
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86 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
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87 0,
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88 CERT_FIND_EXISTING,
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89 pc_to_remove,
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90 NULL);
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91
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92 CertFreeCertificateContext (pc_to_remove);
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93
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94 if (pCert == NULL)
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95 {
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96 printf ("Did not find certificate\n");
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97 continue;
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98 }
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99
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100 if (!CertDeleteCertificateFromStore (pCert))
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101 {
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102 /* From MSDN:
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103 The CertDeleteCertificateFromStore function always frees
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104 pCertContext by calling the CertFreeCertificateContext
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105 function, even if an error is encountered. */
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106 char *error = getLastErrorMsg();
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107 printf ("Error deleting certificate. %s", error);
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108 free (error);
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109 continue;
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110 }
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111 }
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112 return;
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113 }
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114
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115 void
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116 do_install(HCERTSTORE hStore, char **to_install)
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117 {
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118 int i = 0,
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119 ret = -1;
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120
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121 if (!to_install)
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122 {
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123 return;
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124 }
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125
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126 for (i = 0; to_install[i]; i++)
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127 {
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128 PCCERT_CONTEXT pc_to_add = NULL;
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129 PCCERT_CONTEXT found_cert = NULL;
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130
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131 pc_to_add = b64_to_cert_context(to_install[i],
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132 strnlen(to_install[i], MAX_LINE_LENGTH));
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133
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134 if (pc_to_add == NULL)
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135 {
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136 continue;
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137 }
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138
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139 found_cert = CertFindCertificateInStore (hStore,
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140 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
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141 0,
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142 CERT_FIND_EXISTING,
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143 pc_to_add,
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144 NULL);
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145 if (found_cert != NULL)
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146 {
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147 printf ("Certificate already in store\n");
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148 CertFreeCertificateContext (found_cert);
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149 CertFreeCertificateContext (pc_to_add);
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150 continue;
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151 }
215
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152
222
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153 ret = CertAddCertificateContextToStore (hStore,
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154 pc_to_add,
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155 CERT_STORE_ADD_ALWAYS,
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156 NULL);
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157 CertFreeCertificateContext (pc_to_add);
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158 if (!ret)
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159 {
253
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160 char *error = getLastErrorMsg();
215
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161 if (error)
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162 {
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163 printf ("Failed to add certificate: %s \n", error);
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164 free (error);
215
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165 }
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166 }
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167 }
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168 return;
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169 }
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170
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171 int
247
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172 write_stores_win (char **to_install, char **to_remove)
215
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173 {
163
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174 HCERTSTORE hStore = NULL;
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175
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176 if (!to_install && !to_remove)
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177 {
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178 /* Nothing to do */
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179 return 0;
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180 }
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181
247
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182 if (!is_elevated())
163
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183 {
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184 hStore = CertOpenStore (CERT_STORE_PROV_SYSTEM, 0,
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185 0, CERT_SYSTEM_STORE_CURRENT_USER, L"Root");
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186 }
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187 else
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188 {
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189 hStore = CertOpenStore (CERT_STORE_PROV_SYSTEM, 0,
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190 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, L"Root");
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191 }
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192
163
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193 if (!hStore)
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194 {
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195 ERRORPRINTF ("Failed to access store.\n");
163
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196 return ERR_STORE_ACCESS_DENIED;
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197 }
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198
215
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199 /* Do the actual work */
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200 do_install (hStore, to_install);
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201
215
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202 do_remove (hStore, to_remove);
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203
163
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204 if (hStore)
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205 {
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206 CertCloseStore (hStore, 0);
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207 }
163
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208 return 0;
137
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209 }
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210 #endif // WIN32

http://wald.intevation.org/projects/trustbridge/