private static void ValidateSizeRestriction(Restriction.SizeRestriction restriction)
{
if (!RestrictionEvaluator.IsOrderOperation(restriction.Op))
{
throw new InvalidRuleException(string.Format("Operation {0} is not supported in SizeRestriction", restriction.Op));
}
}
private static bool EvaluateAttachmentRestriction(Restriction.AttachmentRestriction restriction, IRuleEvaluationContext context)
{
context.TraceFunction("AttachmentRestriction");
context.NestedLevel++;
bool flag = false;
foreach (AttachmentHandle handle in context.Message.AttachmentCollection)
{
using (Attachment attachment = context.Message.AttachmentCollection.Open(handle))
{
context.TraceFunction <string>("Attachment {0}", attachment.DisplayName);
using (IRuleEvaluationContext attachmentContext = context.GetAttachmentContext(attachment))
{
if (RestrictionEvaluator.Evaluate(restriction.Restriction, attachmentContext))
{
flag = true;
break;
}
}
}
}
context.NestedLevel--;
context.TraceFunction <bool>("AttachmentRestriction evaluates to {0}", flag);
return(flag);
}
private static void ValidatePropertyRestriction(Restriction.PropertyRestriction restriction)
{
if (!RestrictionEvaluator.IsSupportedOperation(restriction.Op))
{
throw new InvalidRuleException(string.Format("Operation {0} is not supported", restriction.Op));
}
if (RuleUtil.IsMultiValueTag(restriction.PropValue.PropTag))
{
if (restriction.MultiValued)
{
throw new InvalidRuleException("At most one tag can be multi-valued");
}
if (restriction.Op != Restriction.RelOp.Equal && restriction.Op != Restriction.RelOp.NotEqual)
{
throw new InvalidRuleException("Restriction has multi-valued value only support Equal or NotEqual operation");
}
}
if (!RuleUtil.IsSameType(restriction.PropTag, restriction.PropValue.PropTag))
{
throw new InvalidRuleException("Tag and value are of different type");
}
if (RuleUtil.IsBooleanTag(restriction.PropTag) && restriction.Op != Restriction.RelOp.Equal && restriction.Op != Restriction.RelOp.NotEqual)
{
throw new InvalidRuleException("Boolean tag only support Equal or NotEqual operation");
}
RestrictionEvaluator.ValidateRestrictionValue(restriction.PropValue);
}
private static bool MatchMultiValueWithPattern(IRuleEvaluationContext context, PropTag tag, object content, object pattern, ContentFlags flags)
{
if (RuleUtil.IsTextProp(tag))
{
string[] array = (string[])content;
string pattern2 = (string)pattern;
foreach (string content2 in array)
{
if (RestrictionEvaluator.MatchString(context.LimitChecker, context.CultureInfo, content2, pattern2, flags))
{
return(true);
}
}
}
else if (RuleUtil.IsBinaryProp(tag))
{
byte[][] array3 = (byte[][])content;
byte[] pattern3 = pattern as byte[];
foreach (byte[] content3 in array3)
{
if (RestrictionEvaluator.MatchByteArray(context.LimitChecker, content3, pattern3, flags))
{
return(true);
}
}
}
return(false);
}
internal static bool MatchString(LimitChecker limitChecker, CultureInfo cultureInfo, string content, string pattern, ContentFlags flags)
{
if (!limitChecker.CheckAndIncrementContentRestrictionCount(1, content))
{
return(false);
}
CompareOptions compareOptions = RestrictionEvaluator.GetCompareOptions(flags);
ContentFlags contentFlags = flags & (ContentFlags.SubString | ContentFlags.Prefix);
CompareInfo compareInfo = cultureInfo.CompareInfo;
switch (contentFlags)
{
case ContentFlags.FullString:
return(compareInfo.Compare(content, pattern, compareOptions) == 0);
case ContentFlags.SubString:
return(compareInfo.IndexOf(content, pattern, compareOptions) != -1);
case ContentFlags.Prefix:
return(compareInfo.IsPrefix(content, pattern, compareOptions));
default:
throw new InvalidRuleException(string.Format("Not supported content flags {0}", flags));
}
}
private static bool EvaluatePropertyRestriction(Restriction.PropertyRestriction restriction, IRuleEvaluationContext context)
{
RestrictionEvaluator.ValidatePropertyRestriction(restriction);
PropTag propTag = restriction.PropTag;
if (restriction.MultiValued)
{
propTag = RuleUtil.GetMultiValuePropTag(propTag);
}
context.TraceFunction <PropTag, Restriction.RelOp, object>("PropertyRestriction [{0}] {1} [{2}]", propTag, restriction.Op, restriction.PropValue.Value);
object obj = context[propTag];
bool flag;
if (obj == null)
{
flag = false;
}
else if (restriction.MultiValued)
{
flag = RestrictionEvaluator.CompareMultiValueWithValue(context, RuleUtil.GetSingleValuePropTag(restriction.PropTag), restriction.Op, obj, restriction.PropValue.Value);
}
else if (RuleUtil.IsMultiValueTag(restriction.PropValue.PropTag))
{
flag = RestrictionEvaluator.CompareValueWithMultiValue(context, restriction.PropTag, restriction.Op, obj, restriction.PropValue.Value);
}
else
{
flag = context.CompareSingleValue(restriction.PropTag, restriction.Op, obj, restriction.PropValue.Value);
}
context.TraceFunction <bool, object>("PropertyRestriction evaluated to {0} with property value [{1}]", flag, obj);
return(flag);
}
private static bool EvaluateNotRestriction(Restriction.NotRestriction restriction, IRuleEvaluationContext context)
{
context.NestedLevel++;
bool flag = !RestrictionEvaluator.Evaluate(restriction.Restriction, context);
context.NestedLevel--;
context.TraceFunction <bool>("NotRestriction evaluated to {0}", flag);
return(flag);
}
private static bool EvaluateContentRestriction(Restriction.ContentRestriction restriction, IRuleEvaluationContext context)
{
RestrictionEvaluator.ValidateContentRestriction(restriction);
PropTag propTag = restriction.PropTag;
if (restriction.MultiValued)
{
propTag = RuleUtil.GetMultiValuePropTag(propTag);
}
context.TraceFunction <PropTag, ContentFlags, object>("ContentRestriction tag [{0}] flags [{1}] value [{2}]", propTag, restriction.Flags, restriction.PropValue.Value);
object obj = context[propTag];
bool flag;
if (obj == null)
{
flag = false;
}
else if (restriction.MultiValued)
{
flag = RestrictionEvaluator.MatchMultiValueWithPattern(context, restriction.PropTag, obj, restriction.PropValue.Value, restriction.Flags);
}
else if (RuleUtil.IsTextProp(restriction.PropTag))
{
flag = RestrictionEvaluator.MatchString(context.LimitChecker, context.CultureInfo, (string)obj, (string)restriction.PropValue.Value, restriction.Flags);
}
else
{
if (!RuleUtil.IsBinaryProp(restriction.PropTag))
{
throw new InvalidRuleException(string.Format("Content restriction can't be used on tag {0}", restriction.PropTag));
}
flag = RestrictionEvaluator.MatchByteArray(context.LimitChecker, (byte[])obj, (byte[])restriction.PropValue.Value, restriction.Flags);
}
context.TraceFunction <bool, object>("ContentRestriction Evaluated to {0} with property value [{1}]", flag, obj);
if (!flag && propTag == PropTag.SenderSearchKey)
{
object obj2 = context[PropTag.SenderSmtpAddress];
if (obj2 != null)
{
string @string = CTSGlobals.AsciiEncoding.GetString((byte[])restriction.PropValue.Value);
ContentFlags contentFlags = ContentFlags.SubString | ContentFlags.IgnoreCase;
context.TraceFunction("No match found in SenderSearchKey, searching for string in SenderSmtpAddress...");
context.TraceFunction <PropTag, ContentFlags, string>("ContentRestriction tag [{0}] flags [{1}] value [{2}]", PropTag.SenderSmtpAddress, contentFlags, @string);
flag = RestrictionEvaluator.MatchString(context.LimitChecker, context.CultureInfo, (string)obj2, @string, contentFlags);
}
}
return(flag);
}
private static bool EvaluateComparePropertyRestriction(Restriction.ComparePropertyRestriction restriction, IRuleEvaluationContext context)
{
RestrictionEvaluator.ValidateComparePropertyRestriction(restriction);
object obj = context[restriction.TagLeft];
object obj2 = context[restriction.TagRight];
context.TraceFunction <PropTag, Restriction.RelOp, PropTag>("ComparePropertyRestriction [{0}] {1} [{2}]", restriction.TagLeft, restriction.Op, restriction.TagRight);
bool flag = false;
if (obj != null && obj2 != null)
{
flag = context.CompareSingleValue(restriction.TagLeft, restriction.Op, obj, obj2);
}
context.TraceFunction <object, Restriction.RelOp, object, bool>("[{0}] {1} [{2}] evaluated to {3}", obj, restriction.Op, obj2, flag);
return(flag);
}
private static bool EvaluateOrRestriction(Restriction.OrRestriction restriction, IRuleEvaluationContext context)
{
context.NestedLevel++;
bool flag = false;
foreach (Restriction restriction2 in restriction.Restrictions)
{
if (RestrictionEvaluator.Evaluate(restriction2, context))
{
flag = true;
break;
}
}
context.NestedLevel--;
context.TraceFunction <bool>("OrRestriction evaluated to {0}", flag);
return(flag);
}
public virtual bool CompareSingleValue(PropTag tag, Restriction.RelOp op, object x, object y)
{
if (x == null)
{
return(y == null);
}
if (y == null)
{
return(false);
}
if (!RestrictionEvaluator.IsSupportedOperation(op))
{
throw new InvalidRuleException(string.Format("Operation {0} is not supported", op));
}
if (x.GetType() != y.GetType() && (!(x.GetType() == typeof(ExDateTime)) || !(y.GetType() == typeof(DateTime))))
{
throw new InvalidRuleException(string.Format("Can not compare values of type {0} and type {1}", x.GetType(), y.GetType()));
}
if (op == Restriction.RelOp.MemberOfDL)
{
byte[] array = x as byte[];
if (array == null)
{
this.TraceDebug("CompareSingleValue: MemberOf, recipientEntryId is not a byte array.");
this.RecordError(ServerStrings.FolderRuleErrorInvalidRecipientEntryId);
return(false);
}
byte[] array2 = y as byte[];
if (array2 == null)
{
this.TraceDebug("CompareSingleValue: MemberOf, groupEntryId is not a byte array, marking rule in error.");
throw new InvalidRuleException(ServerStrings.FolderRuleErrorInvalidGroup(y.GetType().Name));
}
return(RuleUtil.IsMemberOf(this, array, array2));
}
else
{
int?num = RestrictionEvaluator.CompareValue(this.CultureInfo, tag, x, y);
if (num == null)
{
throw new InvalidRuleException(string.Format("Can't compare value '{0}' and '{1}'", x, y));
}
return(RestrictionEvaluator.GetOperationResultFromOrder(op, num.Value));
}
}
private static void ValidateComparePropertyRestriction(Restriction.ComparePropertyRestriction restriction)
{
if (!RestrictionEvaluator.IsSupportedOperation(restriction.Op))
{
throw new InvalidRuleException(string.Format("Operation {0} is not supported", restriction.Op));
}
if (!RuleUtil.IsSameType(restriction.TagLeft, restriction.TagRight))
{
throw new InvalidRuleException("Tag and value are of different type");
}
if (RuleUtil.IsBooleanTag(restriction.TagLeft) && restriction.Op != Restriction.RelOp.Equal && restriction.Op != Restriction.RelOp.NotEqual)
{
throw new InvalidRuleException("Boolean tag only support Equal or NotEqual operation");
}
if (RuleUtil.IsMultiValueTag(restriction.TagLeft) || RuleUtil.IsMultiValueTag(restriction.TagRight))
{
throw new InvalidRuleException("Multi-valued prop or value is not supported in CompareProperty Restriction");
}
}
private static bool EvaluateSizeRestriction(Restriction.SizeRestriction restriction, IRuleEvaluationContext context)
{
RestrictionEvaluator.ValidateSizeRestriction(restriction);
context.TraceFunction <PropTag, Restriction.RelOp, int>("SizeRestriction [{0}] {1} [{2}]", restriction.Tag, restriction.Op, restriction.Size);
PropType type = restriction.Tag.ValueType();
int num = 0;
bool flag = false;
object obj = null;
if (RuleUtil.GetPropTypeSize(type, out num))
{
flag = RestrictionEvaluator.GetOperationResultFromOrder(restriction.Op, num.CompareTo(restriction.Size));
}
else if (RuleUtil.IsMultiValueTag(restriction.Tag))
{
obj = context[restriction.Tag];
object[] array = obj as object[];
if (array != null)
{
foreach (object value in array)
{
int size = RuleUtil.GetSize(value);
if (RestrictionEvaluator.GetOperationResultFromOrder(restriction.Op, size.CompareTo(restriction.Size)))
{
flag = true;
break;
}
}
}
}
else
{
obj = context[restriction.Tag];
int size2 = RuleUtil.GetSize(obj);
flag = RestrictionEvaluator.GetOperationResultFromOrder(restriction.Op, size2.CompareTo(restriction.Size));
}
context.TraceFunction <bool, object>("SizeRestriction evaluated to {0} with property value [{1}]", flag, obj);
return(flag);
}
private static bool EvaluateRecipientRestriction(Restriction.RecipientRestriction restriction, IRuleEvaluationContext context)
{
context.TraceFunction("RecipientRestriction");
context.NestedLevel++;
bool flag = false;
foreach (Recipient recipient in context.Message.Recipients)
{
using (IRuleEvaluationContext recipientContext = context.GetRecipientContext(recipient))
{
context.TraceFunction <string>("Recipient {0}", recipient.Participant.DisplayName);
if (RestrictionEvaluator.Evaluate(restriction.Restriction, recipientContext))
{
flag = true;
break;
}
}
}
context.NestedLevel--;
context.TraceFunction <bool>("RecipientRestriction evaluates to {0}", flag);
return(flag);
}
private static bool EvaluateBitMaskRestriction(Restriction.BitMaskRestriction restriction, IRuleEvaluationContext context)
{
RestrictionEvaluator.ValidateBitMaskRestriction(restriction);
object obj = context[restriction.Tag];
if (obj is int)
{
int num = (int)obj;
bool flag;
if ((num & restriction.Mask) != 0)
{
flag = (restriction.Bmr == Restriction.RelBmr.NotEqualToZero);
}
else
{
flag = (restriction.Bmr == Restriction.RelBmr.EqualToZero);
}
context.TraceFunction <object, Restriction.RelBmr, int, bool>("BitMaskRestriction [{0}] {1} [{2}] evaluates to {3}", obj, restriction.Bmr, restriction.Mask, flag);
return(flag);
}
context.TraceError <object>("Invalid BitMaskRestriction value: {0}", obj);
return(false);
}
internal static bool IsSupportedOperation(Restriction.RelOp op)
{
return(RestrictionEvaluator.IsOrderOperation(op) || op == Restriction.RelOp.MemberOfDL);
}
private bool EvaluateRule(Rule rule, FolderEvaluationResult result)
{
if (rule == null)
{
throw new ArgumentNullException("rule");
}
if (result == null)
{
throw new ArgumentNullException("result");
}
if (rule.Actions == null)
{
throw new ArgumentException("Rule.Actions must not be null.");
}
this.context.CurrentRule = rule;
this.context.NestedLevel = 0;
this.context.TraceDebug <string>("Evaluate rule {0}", rule.Name);
int i = 0;
bool result2;
try
{
RuleUtil.FaultInjection((FaultInjectionLid)3102092605U);
if (!RestrictionEvaluator.Evaluate(rule.Condition, this.context))
{
result2 = false;
}
else
{
this.context.TraceDebug <string>("Rule {0} evaluated to true", rule.Name);
if (this.context.HasRuleFiredBefore(rule))
{
this.context.TraceDebug <string>("Rule history loop detected on rule {0}", rule.Name);
result2 = false;
}
else
{
while (i < rule.Actions.Length)
{
RuleAction ruleAction = rule.Actions[i];
if (ruleAction == null)
{
this.context.TraceDebug <string, int>("For rule \"{0}\", action at index {1} is null.", rule.Name, i);
}
else
{
this.CreateWorkItemForAction(result, ruleAction, i++);
if (!result.ShouldContinue)
{
this.context.TraceDebug <Type>("Stop evaluation process after action {0}", ruleAction.GetType());
break;
}
}
}
result2 = true;
}
}
}
catch (InvalidRuleException exception)
{
this.context.DisableAndMarkRuleInError(rule, rule.Actions[i].ActionType, i, DeferredError.RuleError.Parsing);
this.context.RecordError(exception, ServerStrings.FolderRuleStageEvaluation);
result2 = false;
}
return(result2);
}
public static bool Evaluate(Restriction restriction, IRuleEvaluationContext context)
{
if (restriction == null)
{
context.TraceDebug <string>("Empty restriction evaluated to true in rule {0}", context.CurrentRule.Name);
return(true);
}
Restriction.ResType type = restriction.Type;
switch (type)
{
case Restriction.ResType.And:
return(RestrictionEvaluator.EvaluateAndRestriction((Restriction.AndRestriction)restriction, context));
case Restriction.ResType.Or:
return(RestrictionEvaluator.EvaluateOrRestriction((Restriction.OrRestriction)restriction, context));
case Restriction.ResType.Not:
return(RestrictionEvaluator.EvaluateNotRestriction((Restriction.NotRestriction)restriction, context));
case Restriction.ResType.Content:
return(RestrictionEvaluator.EvaluateContentRestriction((Restriction.ContentRestriction)restriction, context));
case Restriction.ResType.Property:
return(RestrictionEvaluator.EvaluatePropertyRestriction((Restriction.PropertyRestriction)restriction, context));
case Restriction.ResType.CompareProps:
return(RestrictionEvaluator.EvaluateComparePropertyRestriction((Restriction.ComparePropertyRestriction)restriction, context));
case Restriction.ResType.BitMask:
return(RestrictionEvaluator.EvaluateBitMaskRestriction((Restriction.BitMaskRestriction)restriction, context));
case Restriction.ResType.Size:
return(RestrictionEvaluator.EvaluateSizeRestriction((Restriction.SizeRestriction)restriction, context));
case Restriction.ResType.Exist:
return(RestrictionEvaluator.EvaluateExistRestriction((Restriction.ExistRestriction)restriction, context));
case Restriction.ResType.SubRestriction:
if (restriction is Restriction.AttachmentRestriction)
{
return(RestrictionEvaluator.EvaluateAttachmentRestriction((Restriction.AttachmentRestriction)restriction, context));
}
if (restriction is Restriction.RecipientRestriction)
{
return(RestrictionEvaluator.EvaluateRecipientRestriction((Restriction.RecipientRestriction)restriction, context));
}
throw new InvalidRuleException(string.Format("SubRestriction Type {0} is not supported!", restriction.GetType()));
case Restriction.ResType.Comment:
return(RestrictionEvaluator.EvaluateCommentRestriction((Restriction.CommentRestriction)restriction, context));
case Restriction.ResType.Count:
return(RestrictionEvaluator.EvaluateCountRestriction((Restriction.CountRestriction)restriction, context));
default:
switch (type)
{
case Restriction.ResType.True:
context.TraceFunction("True Restriction");
return(true);
case Restriction.ResType.False:
context.TraceFunction("False Restriction");
return(false);
default:
throw new InvalidRuleException(string.Format("Restriction Type {0} is not supported!", restriction.Type));
}
break;
}
}
