@ -21,6 +21,8 @@ package eu.faircode.email;
import static androidx.room.ForeignKey.CASCADE ;
import static com.ezylang.evalex.operators.OperatorIfc.OPERATOR_PRECEDENCE_COMPARISON ;
import android.Manifest ;
import android.content.ContentResolver ;
import android.content.Context ;
@ -41,6 +43,15 @@ import androidx.room.ForeignKey;
import androidx.room.Index ;
import androidx.room.PrimaryKey ;
import com.ezylang.evalex.EvaluationException ;
import com.ezylang.evalex.Expression ;
import com.ezylang.evalex.config.ExpressionConfiguration ;
import com.ezylang.evalex.data.EvaluationValue ;
import com.ezylang.evalex.operators.AbstractOperator ;
import com.ezylang.evalex.operators.InfixOperator ;
import com.ezylang.evalex.parser.ParseException ;
import com.ezylang.evalex.parser.Token ;
import org.json.JSONException ;
import org.json.JSONObject ;
import org.jsoup.nodes.Document ;
@ -62,6 +73,7 @@ import java.util.Date;
import java.util.Iterator ;
import java.util.List ;
import java.util.Locale ;
import java.util.Map ;
import java.util.Objects ;
import java.util.UUID ;
import java.util.regex.Matcher ;
@ -151,6 +163,10 @@ public class EntityRule {
private static final int MAX_NOTES_LENGTH = 512 ; // characters
private static final int URL_TIMEOUT = 15 * 1000 ; // milliseconds
private static final List < String > EXPR_VARIABLES = Collections . unmodifiableList ( Arrays . asList (
"sender" , "subject"
) ) ;
static boolean needsHeaders ( EntityMessage message , List < EntityRule > rules ) {
return needsHeaders ( rules ) ;
}
@ -183,6 +199,16 @@ public class EntityRule {
}
return true ;
}
if ( jcondition . has ( "expression" ) ) {
Expression expression = getExpression ( rule , null ) ;
if ( expression ! = null )
for ( String variable : expression . getUsedVariables ( ) )
if ( "body" . equals ( what ) & & "body" . equalsIgnoreCase ( variable ) )
return true ;
else if ( "header" . equals ( what ) & & "header" . equalsIgnoreCase ( variable ) )
return true ;
return false ;
}
} catch ( Throwable ex ) {
Log . e ( ex ) ;
}
@ -463,6 +489,19 @@ public class EntityRule {
return false ;
}
Expression expression = getExpression ( this , message ) ;
if ( expression ! = null ) {
for ( String variable : expression . getUsedVariables ( ) )
if ( "header" . equalsIgnoreCase ( variable ) & & message . headers = = null )
throw new IllegalArgumentException ( context . getString ( R . string . title_rule_no_headers ) ) ;
Log . i ( "EXPR evaluating " + jcondition . getString ( "expression" ) ) ;
Boolean result = expression . evaluate ( ) . getBooleanValue ( ) ;
Log . i ( "EXPR evaluated=" + result ) ;
if ( ! Boolean . TRUE . equals ( result ) )
return false ;
}
// Safeguard
if ( jsender = = null & &
jrecipient = = null & &
@ -472,9 +511,10 @@ public class EntityRule {
jbody = = null & &
jdate = = null & &
jschedule = = null & &
! jcondition . has ( "younger" ) )
! jcondition . has ( "younger" ) & &
! jcondition . has ( "expression" ) )
return false ;
} catch ( JSONException ex ) {
} catch ( JSONException | ParseException | EvaluationException ex ) {
Log . e ( ex ) ;
return false ;
}
@ -593,6 +633,58 @@ public class EntityRule {
return matched ;
}
@InfixOperator ( precedence = OPERATOR_PRECEDENCE_COMPARISON )
public static class ContainsOperator extends AbstractOperator {
@Override
public EvaluationValue evaluate (
Expression expression , Token operatorToken , EvaluationValue . . . operands ) {
String op1 = operands [ 0 ] . getStringValue ( ) ;
String op2 = operands [ 1 ] . getStringValue ( ) ;
Log . i ( "EXPR " + op1 + " CONTAINS " + op2 ) ;
return expression . convertValue (
! TextUtils . isEmpty ( op1 ) & & ! TextUtils . isEmpty ( op2 ) & &
op1 . toLowerCase ( ) . contains ( op2 . toLowerCase ( ) ) ) ;
}
}
@InfixOperator ( precedence = OPERATOR_PRECEDENCE_COMPARISON )
public static class MatchesOperator extends AbstractOperator {
@Override
public EvaluationValue evaluate (
Expression expression , Token operatorToken , EvaluationValue . . . operands ) {
String op1 = operands [ 0 ] . getStringValue ( ) ;
String op2 = operands [ 1 ] . getStringValue ( ) ;
Log . i ( "EXPR " + op1 + " MATCHES " + op2 ) ;
return expression . convertValue (
! TextUtils . isEmpty ( op1 ) & & ! TextUtils . isEmpty ( op2 ) & &
Pattern . compile ( op2 , Pattern . DOTALL ) . matcher ( op1 ) . matches ( ) ) ;
}
}
static Expression getExpression ( EntityRule rule , EntityMessage message ) throws JSONException {
// https://ezylang.github.io/EvalEx/
JSONObject jcondition = new JSONObject ( rule . condition ) ;
if ( ! jcondition . has ( "expression" ) )
return null ;
String sender = null ;
String subject = null ;
if ( message ! = null ) {
if ( message . from ! = null & & message . from . length = = 1 )
sender = MessageHelper . formatAddresses ( message . from ) ;
subject = message . subject ;
}
ExpressionConfiguration configuration = ExpressionConfiguration . defaultConfiguration ( ) ;
configuration . getOperatorDictionary ( ) . addOperator ( "CONTAINS" , new ContainsOperator ( ) ) ;
configuration . getOperatorDictionary ( ) . addOperator ( "MATCHES" , new MatchesOperator ( ) ) ;
return new Expression ( jcondition . getString ( "expression" ) , configuration )
. with ( "sender" , sender )
. with ( "subject" , subject ) ;
}
boolean execute ( Context context , EntityMessage message , String html ) throws JSONException , IOException {
boolean executed = _execute ( context , message , html ) ;
if ( this . id ! = null & & executed ) {
@ -655,6 +747,25 @@ public class EntityRule {
}
void validate ( Context context ) throws JSONException , IllegalArgumentException {
Expression expression = getExpression ( this , null ) ;
if ( expression ! = null )
try {
for ( String variable : expression . getUsedVariables ( ) ) {
Log . i ( "EXPR variable=" + variable ) ;
if ( ! EXPR_VARIABLES . contains ( variable ) )
throw new IllegalArgumentException ( "Unknown variable '" + variable + "'" ) ;
}
Log . i ( "EXPR validating" ) ;
expression . validate ( ) ;
Log . i ( "EXPR validated" ) ;
} catch ( ParseException ex ) {
Log . w ( "EXPR" , ex ) ;
String message = ex . getMessage ( ) ;
if ( TextUtils . isEmpty ( message ) )
message = "Invalid expression" ;
throw new IllegalArgumentException ( message , ex ) ;
}
JSONObject jargs = new JSONObject ( action ) ;
int type = jargs . getInt ( "type" ) ;
M66B
8 months ago