private static bool TryGetCachedPrincipalData(Guid guid, out ADCachedPrincipal cacheData)
{
TimeSpan cacheExpiry =
ConfigurationHelper.ParseTimeSpanOrDefault(
ConfigurationManager.AppSettings["ActiveDirectoryPrincipalCacheExpiry"],
s_defaultPrincipalCacheExpiry
);
for (int i = s_cachedPrincipals.Count - 1; i >= 0; i--)
{
ADCachedPrincipal dataSet = s_cachedPrincipals[i];
if (DateTime.UtcNow.Subtract(cacheExpiry) > dataSet.CacheTime)
{
Log.Verbose("ADCACHE: Cache expired for {Guid}", guid);
dataSet.Dispose();
s_cachedPrincipals.RemoveAt(i);
continue;
}
if (dataSet.Principal.Guid == guid)
{
Log.Verbose("ADCACHE: Cache hit for {Guid}", guid);
cacheData = dataSet;
return(true);
}
}
Log.Verbose("ADCACHE: Cache miss for {Guid}", guid);
cacheData = null;
return(false);
}
private static bool TryCacheUserPrincipalData(Domain domain, Guid id, out ADCachedPrincipal cacheData)
{
cacheData = null;
try
{
PrincipalContext pc = GetPrincipalContext(ContextType.Domain, domain.Name);
Log.Information("Looking for user with guid {guid} in domain {domain}", id.ToString(), domain.Name);
var user = UserPrincipal.FindByIdentity(pc, IdentityType.Guid, id.ToString());
if (user != null)
{
cacheData = new ADCachedPrincipal(pc, user);
s_cachedPrincipals.Add(cacheData);
return(true);
}
}
catch (Exception exp)
{
Log.Error(exp, "AD: Failed to find user with guid {GUID}", id.ToString());
// let it fail
}
return(false);
}
private static bool TryCacheGroupPrincipalData(Domain domain, string name, out ADCachedPrincipal cacheData)
{
cacheData = null;
try
{
var pc = new PrincipalContext(ContextType.Domain, domain.Name);
Log.Information("Searching for group {name} in domain {domain}", name, domain.Name);
var group = GroupPrincipal.FindByIdentity(pc, IdentityType.Name, name);
if (group != null)
{
cacheData = new ADCachedPrincipal(pc, group);
s_cachedPrincipals.Add(cacheData);
return(true);
}
}
catch (Exception exp)
{
Log.Error(exp, "GetPrincipal Group with name: " + name);
// let it fail
}
return(false);
}
private static bool TryGetCachedPrincipalData(string name, out ADCachedPrincipal cacheData)
{
bool searchUpn = name.Contains("@");
TimeSpan cacheExpiry =
ConfigurationHelper.ParseTimeSpanOrDefault(
ConfigurationManager.AppSettings["ActiveDirectoryPrincipalCacheExpiry"],
s_defaultPrincipalCacheExpiry
);
for (int i = s_cachedPrincipals.Count - 1; i >= 0; i--)
{
ADCachedPrincipal dataSet = s_cachedPrincipals[i];
if (DateTime.UtcNow.Subtract(cacheExpiry) > dataSet.CacheTime)
{
Log.Verbose("ADCACHE: Cache expired for {Name}", name);
dataSet.Dispose();
s_cachedPrincipals.RemoveAt(i);
continue;
}
if (searchUpn && !string.IsNullOrEmpty(dataSet.Principal.UserPrincipalName))
{
if (dataSet.Principal.UserPrincipalName.Equals(name, StringComparison.InvariantCultureIgnoreCase))
{
Log.Verbose("ADCACHE: Cache hit for {UPN}", name);
cacheData = dataSet;
return(true);
}
}
else
{
if (dataSet.Principal.SamAccountName.Equals(name, StringComparison.InvariantCultureIgnoreCase))
{
Log.Verbose("ADCACHE: Cache hit for {SamAccountName}", name);
cacheData = dataSet;
return(true);
}
}
}
Log.Verbose("ADCACHE: Cache miss for {Name}", name);
cacheData = null;
return(false);
}
private static bool TryCacheUserPrincipalData(Domain domain, string fullUsername, string strippedUsername, out ADCachedPrincipal cacheData)
{
cacheData = null;
try
{
PrincipalContext pc = GetPrincipalContext(ContextType.Domain, domain.Name);
UserPrincipal principalBySamName = UserPrincipal.FindByIdentity(pc, IdentityType.SamAccountName, strippedUsername);
if (principalBySamName != null)
{
cacheData = new ADCachedPrincipal(pc, principalBySamName);
s_cachedPrincipals.Add(cacheData);
return(true);
}
Log.Verbose("TryCachePrincipalData: Did not find user {UserName} in domain {DomainName} by SamAccountName", strippedUsername, domain.Name);
UserPrincipal principalByUPN = UserPrincipal.FindByIdentity(pc, IdentityType.UserPrincipalName, fullUsername);
if (principalByUPN != null)
{
cacheData = new ADCachedPrincipal(pc, principalByUPN);
s_cachedPrincipals.Add(cacheData);
return(true);
}
Log.Verbose(
"TryCachePrincipalData: Did not find user {UserName} in domain {DomainName} by UPN",
fullUsername, domain.Name);
}
catch (Exception exp)
{
Log.Error(exp, "TryCachePrincipalData in domain: {DomainName}, user: {FullUserName} ({StrippedUserName})", domain.Name, fullUsername, strippedUsername);
}
return(false);
}
