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annotate common/logging.c @ 616:0172740f5c6e

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Include user information in windows event log messages
author Andre Heinecke <andre.heinecke@intevation.de>
date Thu, 19 Jun 2014 12:06:47 +0200
parents 2a4f7364ab81
children bc02ee484067
rev   line source
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Andre Heinecke <aheinecke@intevation.de>
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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 #include "logging.h"
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9 #include "strhelp.h"
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10
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11 #include <stdio.h>
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12 #include <stdarg.h>
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13 #include <stdbool.h>
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14
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15 #include <strhelp.h>
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16
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17 #ifdef WIN32
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18 # include <windows.h>
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19 #else
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20 # include <syslog.h>
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21 #endif
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22
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23
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24 #ifdef WIN32
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25 static void
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26 win_log(const char *format, va_list ap, bool error)
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27 {
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28 HANDLE log_src = NULL,
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29 process_token = NULL;
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30 wchar_t *wmsg = NULL;
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31 BOOL failure = TRUE;
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32 WORD type = 0,
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33 category = 0;
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34 char buffer[MAX_LOG+1];
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35 PTOKEN_USER user_struct = NULL;
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36 PSID user_sid = NULL;
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37
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38 vsnprintf (buffer, MAX_LOG, format, ap);
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39 buffer[MAX_LOG] = '\0';
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40
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41 log_src = RegisterEventSourceA (NULL, LOG_NAME);
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42
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43 if (log_src == NULL)
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44 {
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45 PRINTLASTERROR ("Failed to open log source.");
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46 return;
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47 }
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48
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49 if (error)
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50 {
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51 type = EVENTLOG_ERROR_TYPE;
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52 }
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53 else
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54 {
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55 type = EVENTLOG_INFORMATION_TYPE;
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56 }
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57
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58 wmsg = utf8_to_wchar (buffer, strlen(buffer));
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59 if (wmsg == NULL)
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60 {
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61 ERRORPRINTF ("Failed to convert log message to utf-16");
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62 goto done;
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63 }
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64
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65 /* Get the current user sid for logging */
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66
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67 OpenProcessToken (GetCurrentProcess(), TOKEN_READ, &process_token);
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68 if (process_token)
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69 {
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70 DWORD size = 0;
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71
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72 // check how much space is needed
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73 GetTokenInformation (process_token, TokenUser, NULL, 0, &size);
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74 if (ERROR_INSUFFICIENT_BUFFER == GetLastError())
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75 {
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76 user_struct = xmalloc (size);
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77 GetTokenInformation (process_token, TokenUser, user_struct, size, &size);
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78 user_sid = user_struct->User.Sid;
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79 }
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80 }
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81
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82
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83 failure = ReportEventW (log_src,
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84 type,
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85 category,
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86 0,
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87 user_sid,
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88 1,
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89 0,
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90 (const WCHAR **) &wmsg,
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91 NULL);
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92 if (failure)
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93 {
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94 PRINTLASTERROR ("Failed to report event.");
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95 }
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96
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97 done:
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98 if (process_token)
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99 {
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100 CloseHandle(process_token);
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101 }
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102 xfree (user_struct);
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103 xfree (wmsg);
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104
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105 if (!DeregisterEventSource (log_src))
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106 {
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107 PRINTLASTERROR ("Failed to close log source.");
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108 }
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109 return;
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110 }
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111
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112 char *
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113 getLastErrorMsg()
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114 {
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115 LPWSTR bufPtr = NULL;
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116 DWORD err = GetLastError();
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117 char *retval = NULL;
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118 FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
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119 FORMAT_MESSAGE_FROM_SYSTEM |
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120 FORMAT_MESSAGE_IGNORE_INSERTS,
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121 NULL, err, 0, (LPWSTR) &bufPtr, 0, NULL);
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122 if (!bufPtr)
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123 {
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124 HMODULE hWinhttp = GetModuleHandleW (L"crypt32");
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125 if (hWinhttp)
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126 {
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127 FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
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128 FORMAT_MESSAGE_FROM_HMODULE |
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129 FORMAT_MESSAGE_IGNORE_INSERTS,
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130 hWinhttp, HRESULT_CODE (err), 0,
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131 (LPWSTR) &bufPtr, 0, NULL);
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132 }
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133 }
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134 if (!bufPtr) {
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135 fprintf (stderr, "Error getting last error for code: %lx \n", err);
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136 return NULL;
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137 }
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138
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139 retval = wchar_to_utf8(bufPtr, wcslen(bufPtr));
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140 LocalFree (bufPtr);
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141
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142 return retval;
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143 }
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144
615
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145 #else /* WIN32 */
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146
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147
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148 static void
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149 linux_log (const char *format, va_list ap, bool error)
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150 {
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151 openlog (LOG_NAME, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_USER);
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152 vsyslog ( error ? LOG_ERR : LOG_INFO, format, ap);
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153 }
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154
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155 #endif /* WIN32 */
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156
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157 void
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158 syslog_info_printf(const char *format, ...)
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159 {
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160 va_list args;
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161 va_start (args, format);
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162 #ifdef WIN32
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163 win_log (format, args, false);
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164 #else
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165 linux_log (format, args, false);
252
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166 #endif
615
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167 va_end (args);
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168 }
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169
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170 void
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171 syslog_error_printf(const char *format, ...)
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172 {
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173 va_list args;
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174 va_start (args, format);
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175 #ifdef WIN32
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176 win_log (format, args, true);
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177 #else
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178 linux_log (format, args, true);
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179 #endif
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180 va_end (args);
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181 }
http://wald.intevation.org/projects/trustbridge/