92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
/* **************************************************************************
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Author: Stefan Reutter
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Created: August 2013
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****************************************************************************/
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#include <cstring>
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#include "backend_config_reader.h"
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namespace DAMARIS
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{
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BackendConfigReader::BackendConfigReader(const gchar *configPath):
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_damarisConfigPath(configPath),
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_keyFile (NULL)
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{
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loadConfig();
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// if loadConfig succeeded, we should have a valid config file
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}
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void BackendConfigReader::loadConfig()
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{
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bool fileFound = false;
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// check if user config file exists
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const gchar* usr_config_dir = g_get_user_config_dir();
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int configPathLength = strlen(usr_config_dir) + strlen(_damarisConfigPath);
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gchar *cfgFileName = new gchar[configPathLength > 1024 ? configPathLength: 1024];
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strcpy(cfgFileName, usr_config_dir);
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strcat(cfgFileName, _damarisConfigPath);
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_keyFile=g_key_file_new ();
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GError *error=NULL;
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if (!loadConfigFile(cfgFileName, G_KEY_FILE_NONE, error)) {
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// if the user config doesn't exist, attempt to read from a system config
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const gchar *const *sys_config_dirs = g_get_system_config_dirs();
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unsigned int i = 0;
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while (true)
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{
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if (sys_config_dirs[i]==NULL) { break;} // no more paths to check
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// avoid buffer overrun
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configPathLength = strlen(sys_config_dirs[i]) + strlen(_damarisConfigPath);
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if (configPathLength > 1024)
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{
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gchar *temp = cfgFileName;
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cfgFileName = new gchar[configPathLength];
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delete[] temp;
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}
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strcpy(cfgFileName, sys_config_dirs[i]);
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strcat(cfgFileName, _damarisConfigPath);
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if (loadConfigFile(cfgFileName, G_KEY_FILE_NONE, error))
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{
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// found a config file, breaking
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fileFound = true;
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break;
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}
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i++;
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}
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} else
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{
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fileFound = true;
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}
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delete[] cfgFileName;
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if (!fileFound)
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{
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throw(BackendConfigException("No config file found\n"));
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}
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}
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bool BackendConfigReader::loadConfigFile(const gchar *keyFileName, GKeyFileFlags flags, GError *error)
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{
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if (!g_key_file_load_from_file (_keyFile, keyFileName, flags, &error)) {
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if (error->code == G_FILE_ERROR_NOENT) // file not found
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{
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return false;
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} else
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{
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g_log(G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, "%s", error->message);
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}
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error = NULL;
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}
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return true;
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}
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}// namespace DAMARIS
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