public override System.Xml.XmlNode Decrypt(System.Xml.XmlNode encryptedNode)
{
string userData;
var settingsNode = encryptedNode.SelectSingleNode("/EncryptedData/ec2UserDataProviderInfo");
//get user-data string
try
{
userData = new WebClientWithTimeout(6000).DownloadString("http://169.254.169.254/latest/user-data");
}
catch
{
//probably not in AWS EC2 environment
userData = null;
}
//get configured location for replacement
string configLocationFormat = settingsNode.Attributes["configLocationFormat"].Value;
//make decision for intended xml file location by interrogating existing files
string configXmlFileBasePath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase).Replace("file:\\", String.Empty);
string configXmlFileFullPath = null;
if (!String.IsNullOrWhiteSpace(userData))
{
//use file with replacement key, if available
string destinationConfigLocation = Path.Combine(configXmlFileBasePath,
configLocationFormat.Replace(REPLACEMENT_VALUE, userData));
if (File.Exists(destinationConfigLocation))
configXmlFileFullPath = destinationConfigLocation;
}
//no user-data or no file matching user-data?
if (String.IsNullOrWhiteSpace(configXmlFileFullPath))
{
//use default file path
string defaultUserData = settingsNode.Attributes["defaultUserData"].Value;
//use file with replacement key, if available
string destinationConfigLocation = Path.Combine(configXmlFileBasePath,
configLocationFormat.Replace(REPLACEMENT_VALUE, defaultUserData));
if (File.Exists(destinationConfigLocation))
configXmlFileFullPath = destinationConfigLocation;
else
{
throw new ConfigurationErrorsException("Default file specified in ec2 user-data configuration provider was not found at: " + configXmlFileFullPath);
}
}
//return the xml from intended file
try
{
var configDoc = new XmlDocument();
configDoc.Load(configXmlFileFullPath);
//note: this code assumes configuration starts at node with index '1' since node at index '0' should be the xml declaration
return configDoc.ChildNodes[1];
}
catch (Exception ex)
{
throw new ConfigurationErrorsException("Could not load file at path (which was 'decrypted' from ec2 user-data) as xml: " + configXmlFileFullPath);
}
}
public override System.Xml.XmlNode Decrypt(System.Xml.XmlNode encryptedNode)
{
string userData;
var settingsNode = encryptedNode.SelectSingleNode("/EncryptedData/ec2UserDataProviderInfo");
//get user-data string
try
{
userData = new WebClientWithTimeout(6000).DownloadString("http://169.254.169.254/latest/user-data");
}
catch
{
//probably not in AWS EC2 environment
userData = null;
}
//get configured location for replacement
string configLocationFormat = settingsNode.Attributes["configLocationFormat"].Value;
//make decision for intended xml file location by interrogating existing files
string configXmlFileBasePath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase).Replace("file:\\", String.Empty);
string configXmlFileFullPath = null;
if (!String.IsNullOrWhiteSpace(userData))
{
//use file with replacement key, if available
string destinationConfigLocation = Path.Combine(configXmlFileBasePath,
configLocationFormat.Replace(REPLACEMENT_VALUE, userData));
if (File.Exists(destinationConfigLocation))
{
configXmlFileFullPath = destinationConfigLocation;
}
}
//no user-data or no file matching user-data?
if (String.IsNullOrWhiteSpace(configXmlFileFullPath))
{
//use default file path
string defaultUserData = settingsNode.Attributes["defaultUserData"].Value;
//use file with replacement key, if available
string destinationConfigLocation = Path.Combine(configXmlFileBasePath,
configLocationFormat.Replace(REPLACEMENT_VALUE, defaultUserData));
if (File.Exists(destinationConfigLocation))
{
configXmlFileFullPath = destinationConfigLocation;
}
else
{
throw new ConfigurationErrorsException("Default file specified in ec2 user-data configuration provider was not found at: " + configXmlFileFullPath);
}
}
//return the xml from intended file
try
{
var configDoc = new XmlDocument();
configDoc.Load(configXmlFileFullPath);
//note: this code assumes configuration starts at node with index '1' since node at index '0' should be the xml declaration
return(configDoc.ChildNodes[1]);
}
catch (Exception ex)
{
throw new ConfigurationErrorsException("Could not load file at path (which was 'decrypted' from ec2 user-data) as xml: " + configXmlFileFullPath);
}
}
