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annotate common/logging.h @ 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 5042ace08cba
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 #ifndef COMMON_LOGGING_H
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9 #define COMMON_LOGGING_H
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10
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11 #ifdef __cplusplus
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12 extern "C" {
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13 #endif
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14
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15 /*
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16 * @file
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17 * @brief Logging and debugging functions
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18 */
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19
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20 #include <stdio.h>
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21
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22 /** @def Maximum length of log messages */
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23 #define MAX_LOG 511
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24
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25 /** @def The name used for logging */
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26 #define LOG_NAME "TrustBridge"
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27
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28 #ifdef WIN32
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29
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30 #include <windows.h>
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31
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32 /** @brief Gets the localized error message for the last error
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33 * returned by GetLastError
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34 *
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35 * @returns utf8 error message that needs to be freed by the caller.
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36 **/
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37
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38 char *getLastErrorMsg();
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39
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40 #endif
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41
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42 /**
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43 * @def DEBUGOUTPUT
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44 * @brief If defined code for extra debugging output will be generated.
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45 *
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46 * Will be defined if current build is not an RELEASE_BUILD.
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47 */
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48 #ifndef RELEASE_BUILD
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49 #define DEBUGOUTPUT
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50 #endif
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51
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52 /**
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53 * @def DEBUGPREFIX
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54 * @brief A string prepended to debug output.
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55 *
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56 * Should be defined to indicate which module created the output.
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57 */
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58 #ifndef DEBUGPREFIX
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59 #define DEBUGPREFIX ""
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60 #endif
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61
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62 /**
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63 * @def DEBUGPRINTF(fmt, ...)
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64 * @brief Debug printf
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65 *
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66 * Prints to stderr if DEBUGOUTPUT is defined.
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67 */
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68 #ifdef DEBUGOUTPUT
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69 # ifndef WIN32
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70 # define DEBUGPRINTF(fmt, ...) fprintf(stderr, DEBUGPREFIX "DEBUG: " fmt, ##__VA_ARGS__);
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71 # else /* WIN32 */
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72 # define DEBUGPRINTF(fmt, ...) \
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73 { \
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74 char buf[512]; \
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75 snprintf(buf, 511, "DEBUG: " fmt, ##__VA_ARGS__); \
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76 buf[511] = '\0'; \
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77 OutputDebugStringA(buf); \
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78 }
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79 # endif /* WIN32 */
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80 #else
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81 # define DEBUGPRINTF(fmt, ...)
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82 #endif
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83
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84 /**
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85 * @def ERRORPRINTF(fmt, ...)
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86 * @brief Debug printf
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87 *
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88 * Prints an error to stderr
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89 */
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90 #ifdef WIN32
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91 # define ERRORPRINTF(fmt, ...) \
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92 { \
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93 char buf[512]; \
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94 snprintf(buf, 511, "ERROR: " fmt, ##__VA_ARGS__); \
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95 buf[511] = '\0'; \
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96 OutputDebugStringA(buf); \
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97 }
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98 #else
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99 # define ERRORPRINTF(fmt, ...) fprintf(stderr, DEBUGPREFIX "ERROR: " fmt, ##__VA_ARGS__);
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100 #endif
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101
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102 /**
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103 * @def PRINTLASTERROR(msg)
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104 * @brief Prints the last windows error with a custom message
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105 *
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106 * Prints an error to stderr
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107 */
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108 #define PRINTLASTERROR(msg) \
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109 char *my_error = getLastErrorMsg(); \
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110 if (my_error) { \
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111 ERRORPRINTF(msg" : %s\n", my_error); \
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112 free (my_error); \
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113 } \
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114 ERRORPRINTF ("Failed to get error information\n");
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115
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116
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117 /**
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118 * @brief log an informational message into the syslog / event log
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119 *
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120 * The message length is limited to MAX_LOG characters. Log messages
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121 * are expected to be in UTF-8 encoding.
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122 *
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123 * Function paramters are the same as for the printf familiy.
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124 */
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125 void syslog_info_printf(const char *format, ...);
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126
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127 /**
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128 * @brief log an error message into the syslog / event log
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129 *
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130 * The message length is limited to MAX_LOG characters. Log messages
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131 * are expected to be in UTF-8 encoding.
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132 *
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133 * Function paramters are the same as for the printf familiy.
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134 */
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135 void syslog_error_printf(const char *format, ...);
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136
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137 #ifdef __cplusplus
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138 }
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139 #endif
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140
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141 #endif /* COMMON_LOGGING_H */
http://wald.intevation.org/projects/trustbridge/