implement packet builder
This commit is contained in:
parent
570f2b41c6
commit
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454
internal/packets/builder.go
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454
internal/packets/builder.go
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@ -0,0 +1,454 @@
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package packets
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import (
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"bytes"
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"encoding/binary"
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"eq2emu/internal/common"
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"eq2emu/internal/packets/parser"
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"fmt"
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"math"
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)
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// PacketBuilder constructs packets from data using parsed packet definitions
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type PacketBuilder struct {
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def *parser.PacketDef
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version uint32
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flags uint64
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buf *bytes.Buffer
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}
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// NewPacketBuilder creates a new packet builder for the given packet definition
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func NewPacketBuilder(def *parser.PacketDef, version uint32, flags uint64) *PacketBuilder {
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return &PacketBuilder{
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def: def,
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version: version,
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flags: flags,
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buf: new(bytes.Buffer),
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}
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}
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// Build constructs a packet from the provided data map
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func (b *PacketBuilder) Build(data map[string]any) ([]byte, error) {
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b.buf.Reset()
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err := b.buildStruct(data, b.def)
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if err != nil {
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return nil, err
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}
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return b.buf.Bytes(), nil
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}
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// buildStruct builds a struct according to the packet definition field order
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func (b *PacketBuilder) buildStruct(data map[string]any, def *parser.PacketDef) error {
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order := b.getVersionOrder(def)
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for _, fieldName := range order {
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field, exists := def.Fields[fieldName]
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if !exists {
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continue
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}
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// Skip fields based on conditions
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if !b.checkCondition(field.Condition, data) {
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continue
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}
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fieldType := field.Type
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if field.Type2 != 0 && b.checkCondition(field.Type2Cond, data) {
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fieldType = field.Type2
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}
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value, hasValue := data[fieldName]
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if !hasValue && !field.Optional {
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return fmt.Errorf("required field '%s' not found in data", fieldName)
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}
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if hasValue {
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err := b.buildField(value, field, fieldType, fieldName)
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if err != nil {
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return fmt.Errorf("error building field '%s': %w", fieldName, err)
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}
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} else if field.Optional {
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// Write default value for optional fields
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err := b.writeDefaultValue(field, fieldType)
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if err != nil {
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return fmt.Errorf("error writing default value for field '%s': %w", fieldName, err)
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}
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}
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}
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return nil
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}
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// buildField writes a single field to the packet buffer
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func (b *PacketBuilder) buildField(value any, field parser.FieldDesc, fieldType common.EQ2DataType, fieldName string) error {
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switch fieldType {
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case common.TypeInt8:
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v, ok := value.(uint8)
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if !ok {
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return fmt.Errorf("field '%s' expected uint8, got %T", fieldName, value)
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}
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if field.Oversized > 0 {
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return b.writeOversizedUint8(v, field.Oversized)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeInt16:
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v, ok := value.(uint16)
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if !ok {
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return fmt.Errorf("field '%s' expected uint16, got %T", fieldName, value)
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}
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if field.Oversized > 0 {
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return b.writeOversizedUint16(v, field.Oversized)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeInt32:
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v, ok := value.(uint32)
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if !ok {
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return fmt.Errorf("field '%s' expected uint32, got %T", fieldName, value)
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}
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if field.Oversized > 0 {
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return b.writeOversizedUint32(v, field.Oversized)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeInt64:
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v, ok := value.(uint64)
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if !ok {
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return fmt.Errorf("field '%s' expected uint64, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeSInt8:
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v, ok := value.(int8)
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if !ok {
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return fmt.Errorf("field '%s' expected int8, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeSInt16:
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v, ok := value.(int16)
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if !ok {
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return fmt.Errorf("field '%s' expected int16, got %T", fieldName, value)
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}
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if field.Oversized > 0 {
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return b.writeOversizedSint16(v, field.Oversized)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeSInt32:
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v, ok := value.(int32)
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if !ok {
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return fmt.Errorf("field '%s' expected int32, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeSInt64:
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v, ok := value.(int64)
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if !ok {
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return fmt.Errorf("field '%s' expected int64, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeString8:
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v, ok := value.(string)
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if !ok {
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return fmt.Errorf("field '%s' expected string, got %T", fieldName, value)
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}
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return b.writeEQ2String8(v)
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case common.TypeString16:
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v, ok := value.(string)
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if !ok {
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return fmt.Errorf("field '%s' expected string, got %T", fieldName, value)
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}
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return b.writeEQ2String16(v)
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case common.TypeString32:
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v, ok := value.(string)
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if !ok {
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return fmt.Errorf("field '%s' expected string, got %T", fieldName, value)
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}
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return b.writeEQ2String32(v)
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case common.TypeChar:
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v, ok := value.([]byte)
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if !ok {
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return fmt.Errorf("field '%s' expected []byte, got %T", fieldName, value)
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}
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return b.writeBytes(v, field.Length)
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case common.TypeFloat:
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v, ok := value.(float32)
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if !ok {
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return fmt.Errorf("field '%s' expected float32, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeDouble:
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v, ok := value.(float64)
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if !ok {
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return fmt.Errorf("field '%s' expected float64, got %T", fieldName, value)
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}
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return binary.Write(b.buf, binary.LittleEndian, v)
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case common.TypeColor:
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v, ok := value.(common.EQ2Color)
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if !ok {
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return fmt.Errorf("field '%s' expected EQ2Color, got %T", fieldName, value)
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}
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return b.writeEQ2Color(v)
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case common.TypeEquipment:
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v, ok := value.(common.EQ2EquipmentItem)
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if !ok {
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return fmt.Errorf("field '%s' expected EQ2EquipmentItem, got %T", fieldName, value)
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}
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return b.writeEQ2Equipment(v)
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case common.TypeArray:
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v, ok := value.([]map[string]any)
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if !ok {
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return fmt.Errorf("field '%s' expected []map[string]any, got %T", fieldName, value)
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}
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return b.buildArray(v, field)
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default:
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return fmt.Errorf("unsupported field type %d for field '%s'", fieldType, fieldName)
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}
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}
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// buildArray builds an array field
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func (b *PacketBuilder) buildArray(items []map[string]any, field parser.FieldDesc) error {
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if field.SubDef == nil {
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return fmt.Errorf("array field missing sub-definition")
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}
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size := len(items)
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if field.MaxArraySize > 0 && size > field.MaxArraySize {
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size = field.MaxArraySize
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}
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for i := 0; i < size; i++ {
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err := b.buildStruct(items[i], field.SubDef)
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if err != nil {
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return fmt.Errorf("error building array item %d: %w", i, err)
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}
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}
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return nil
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}
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// Helper methods for writing specific data types
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func (b *PacketBuilder) writeEQ2String8(s string) error {
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data := []byte(s)
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size := len(data)
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if size > math.MaxUint8 {
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size = math.MaxUint8
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}
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err := binary.Write(b.buf, binary.LittleEndian, uint8(size))
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if err != nil {
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return err
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}
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_, err = b.buf.Write(data[:size])
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return err
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}
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func (b *PacketBuilder) writeEQ2String16(s string) error {
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data := []byte(s)
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size := len(data)
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if size > math.MaxUint16 {
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size = math.MaxUint16
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}
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err := binary.Write(b.buf, binary.LittleEndian, uint16(size))
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if err != nil {
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return err
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}
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_, err = b.buf.Write(data[:size])
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return err
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}
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func (b *PacketBuilder) writeEQ2String32(s string) error {
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data := []byte(s)
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size := len(data)
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if size > math.MaxUint32 {
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size = math.MaxUint32
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}
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err := binary.Write(b.buf, binary.LittleEndian, uint32(size))
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if err != nil {
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return err
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}
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_, err = b.buf.Write(data[:size])
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return err
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}
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func (b *PacketBuilder) writeBytes(data []byte, length int) error {
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if length > 0 && len(data) > length {
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data = data[:length]
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}
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_, err := b.buf.Write(data)
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return err
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}
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func (b *PacketBuilder) writeEQ2Color(color common.EQ2Color) error {
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err := binary.Write(b.buf, binary.LittleEndian, color.Red)
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if err != nil {
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return err
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}
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err = binary.Write(b.buf, binary.LittleEndian, color.Green)
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if err != nil {
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return err
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}
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return binary.Write(b.buf, binary.LittleEndian, color.Blue)
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}
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func (b *PacketBuilder) writeEQ2Equipment(item common.EQ2EquipmentItem) error {
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err := binary.Write(b.buf, binary.LittleEndian, item.Type)
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if err != nil {
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return err
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}
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err = b.writeEQ2Color(item.Color)
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if err != nil {
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return err
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}
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return b.writeEQ2Color(item.Highlight)
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}
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func (b *PacketBuilder) writeOversizedUint8(value uint8, threshold int) error {
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if int(value) >= threshold {
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err := binary.Write(b.buf, binary.LittleEndian, uint8(255))
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if err != nil {
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return err
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}
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return binary.Write(b.buf, binary.LittleEndian, uint16(value))
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}
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return binary.Write(b.buf, binary.LittleEndian, value)
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}
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func (b *PacketBuilder) writeOversizedUint16(value uint16, threshold int) error {
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if int(value) >= threshold {
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err := binary.Write(b.buf, binary.LittleEndian, uint16(65535))
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if err != nil {
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return err
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}
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return binary.Write(b.buf, binary.LittleEndian, uint32(value))
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}
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return binary.Write(b.buf, binary.LittleEndian, value)
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}
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func (b *PacketBuilder) writeOversizedUint32(value uint32, threshold int) error {
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if int64(value) >= int64(threshold) {
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err := binary.Write(b.buf, binary.LittleEndian, uint32(4294967295))
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if err != nil {
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return err
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}
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return binary.Write(b.buf, binary.LittleEndian, uint64(value))
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}
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return binary.Write(b.buf, binary.LittleEndian, value)
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}
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func (b *PacketBuilder) writeOversizedSint16(value int16, threshold int) error {
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if int(value) >= threshold {
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err := binary.Write(b.buf, binary.LittleEndian, int16(-1))
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if err != nil {
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return err
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}
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return binary.Write(b.buf, binary.LittleEndian, int32(value))
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}
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return binary.Write(b.buf, binary.LittleEndian, value)
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}
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func (b *PacketBuilder) writeDefaultValue(field parser.FieldDesc, fieldType common.EQ2DataType) error {
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switch fieldType {
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case common.TypeInt8:
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return binary.Write(b.buf, binary.LittleEndian, uint8(field.DefaultValue))
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case common.TypeInt16:
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return binary.Write(b.buf, binary.LittleEndian, uint16(field.DefaultValue))
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case common.TypeInt32:
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return binary.Write(b.buf, binary.LittleEndian, uint32(field.DefaultValue))
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case common.TypeInt64:
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return binary.Write(b.buf, binary.LittleEndian, uint64(field.DefaultValue))
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case common.TypeSInt8:
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return binary.Write(b.buf, binary.LittleEndian, field.DefaultValue)
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case common.TypeSInt16:
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return binary.Write(b.buf, binary.LittleEndian, int16(field.DefaultValue))
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case common.TypeSInt32:
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return binary.Write(b.buf, binary.LittleEndian, int32(field.DefaultValue))
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case common.TypeSInt64:
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return binary.Write(b.buf, binary.LittleEndian, int64(field.DefaultValue))
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case common.TypeString8:
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return b.writeEQ2String8("")
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case common.TypeString16:
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return b.writeEQ2String16("")
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case common.TypeString32:
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return b.writeEQ2String32("")
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case common.TypeFloat:
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return binary.Write(b.buf, binary.LittleEndian, float32(field.DefaultValue))
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case common.TypeDouble:
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return binary.Write(b.buf, binary.LittleEndian, float64(field.DefaultValue))
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case common.TypeColor:
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color := common.EQ2Color{Red: field.DefaultValue, Green: field.DefaultValue, Blue: field.DefaultValue}
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return b.writeEQ2Color(color)
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case common.TypeChar:
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if field.Length > 0 {
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defaultBytes := make([]byte, field.Length)
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return b.writeBytes(defaultBytes, field.Length)
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}
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}
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return nil
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}
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func (b *PacketBuilder) getVersionOrder(def *parser.PacketDef) []string {
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var bestVersion uint32
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for v := range def.Orders {
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if v <= b.version && v > bestVersion {
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bestVersion = v
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}
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}
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return def.Orders[bestVersion]
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}
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func (b *PacketBuilder) checkCondition(condition string, data map[string]any) bool {
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if condition == "" {
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return true
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}
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// Simple condition evaluation - this would need to be expanded
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// for complex expressions used in the packet definitions
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if value, exists := data[condition]; exists {
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switch v := value.(type) {
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case bool:
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return v
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case int, int8, int16, int32, int64:
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return v != 0
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case uint, uint8, uint16, uint32, uint64:
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return v != 0
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case string:
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return v != ""
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default:
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return true
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}
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}
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return false
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}
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// BuildPacket is a convenience function that creates a builder and builds a packet in one call
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func BuildPacket(packetName string, data map[string]any, version uint32, flags uint64) ([]byte, error) {
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def, exists := GetPacket(packetName)
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if !exists {
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return nil, fmt.Errorf("packet definition '%s' not found", packetName)
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}
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builder := NewPacketBuilder(def, version, flags)
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return builder.Build(data)
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}
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173
internal/packets/builder_test.go
Normal file
173
internal/packets/builder_test.go
Normal file
@ -0,0 +1,173 @@
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package packets
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import (
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"eq2emu/internal/common"
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"eq2emu/internal/packets/parser"
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"testing"
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)
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func TestPacketBuilderSimpleFields(t *testing.T) {
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// Create a simple packet definition for testing
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def := parser.NewPacketDef(5)
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// Add some basic fields
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def.Fields["field1"] = parser.FieldDesc{
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Type: common.TypeInt8,
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}
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def.Fields["field2"] = parser.FieldDesc{
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Type: common.TypeString8,
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}
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def.Fields["field3"] = parser.FieldDesc{
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Type: common.TypeInt32,
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}
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// Set field order
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def.Orders[1] = []string{"field1", "field2", "field3"}
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// Create test data
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data := map[string]any{
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"field1": uint8(42),
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"field2": "hello",
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"field3": uint32(12345),
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}
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// Build packet
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builder := NewPacketBuilder(def, 1, 0)
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packetData, err := builder.Build(data)
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if err != nil {
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t.Errorf("Failed to build simple packet: %v", err)
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||||
return
|
||||
}
|
||||
|
||||
expectedMinLength := 1 + 1 + 5 + 4 // uint8 + string8(len+data) + uint32
|
||||
if len(packetData) < expectedMinLength {
|
||||
t.Errorf("Built packet too short: got %d bytes, expected at least %d", len(packetData), expectedMinLength)
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Successfully built simple packet (%d bytes)", len(packetData))
|
||||
|
||||
// Verify the first byte is correct
|
||||
if packetData[0] != 42 {
|
||||
t.Errorf("First field incorrect: got %d, expected 42", packetData[0])
|
||||
}
|
||||
}
|
||||
|
||||
func TestPacketBuilderOptionalFields(t *testing.T) {
|
||||
// Create a packet definition with optional fields
|
||||
def := parser.NewPacketDef(3)
|
||||
|
||||
def.Fields["required"] = parser.FieldDesc{
|
||||
Type: common.TypeInt8,
|
||||
}
|
||||
def.Fields["optional"] = parser.FieldDesc{
|
||||
Type: common.TypeInt8,
|
||||
Optional: true,
|
||||
}
|
||||
|
||||
def.Orders[1] = []string{"required", "optional"}
|
||||
|
||||
// Test with only required field
|
||||
data := map[string]any{
|
||||
"required": uint8(123),
|
||||
}
|
||||
|
||||
builder := NewPacketBuilder(def, 1, 0)
|
||||
packetData, err := builder.Build(data)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to build packet with optional fields: %v", err)
|
||||
return
|
||||
}
|
||||
|
||||
expectedLength := 2 // required + optional default
|
||||
if len(packetData) != expectedLength {
|
||||
t.Errorf("Built packet wrong length: got %d bytes, expected %d", len(packetData), expectedLength)
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Successfully built packet with optional fields (%d bytes)", len(packetData))
|
||||
}
|
||||
|
||||
func TestPacketBuilderMissingRequiredField(t *testing.T) {
|
||||
// Create a packet definition
|
||||
def := parser.NewPacketDef(2)
|
||||
|
||||
def.Fields["required"] = parser.FieldDesc{
|
||||
Type: common.TypeInt8,
|
||||
}
|
||||
def.Fields["also_required"] = parser.FieldDesc{
|
||||
Type: common.TypeInt16,
|
||||
}
|
||||
|
||||
def.Orders[1] = []string{"required", "also_required"}
|
||||
|
||||
// Test with missing required field
|
||||
data := map[string]any{
|
||||
"required": uint8(123),
|
||||
// missing "also_required"
|
||||
}
|
||||
|
||||
builder := NewPacketBuilder(def, 1, 0)
|
||||
_, err := builder.Build(data)
|
||||
if err == nil {
|
||||
t.Error("Expected error for missing required field, but got none")
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Correctly detected missing required field: %v", err)
|
||||
}
|
||||
|
||||
func TestPacketBuilderStringTypes(t *testing.T) {
|
||||
// Test different string types
|
||||
def := parser.NewPacketDef(3)
|
||||
|
||||
def.Fields["str8"] = parser.FieldDesc{
|
||||
Type: common.TypeString8,
|
||||
}
|
||||
def.Fields["str16"] = parser.FieldDesc{
|
||||
Type: common.TypeString16,
|
||||
}
|
||||
def.Fields["str32"] = parser.FieldDesc{
|
||||
Type: common.TypeString32,
|
||||
}
|
||||
|
||||
def.Orders[1] = []string{"str8", "str16", "str32"}
|
||||
|
||||
data := map[string]any{
|
||||
"str8": "test8",
|
||||
"str16": "test16",
|
||||
"str32": "test32",
|
||||
}
|
||||
|
||||
builder := NewPacketBuilder(def, 1, 0)
|
||||
packetData, err := builder.Build(data)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to build packet with strings: %v", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Verify we have some data
|
||||
if len(packetData) < 20 { // rough estimate
|
||||
t.Errorf("Built packet too short for string data: %d bytes", len(packetData))
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Successfully built packet with strings (%d bytes)", len(packetData))
|
||||
}
|
||||
|
||||
func TestBuildPacketConvenienceFunction(t *testing.T) {
|
||||
// Test the convenience function
|
||||
data := map[string]any{
|
||||
"username": "testuser",
|
||||
"password": "testpass",
|
||||
}
|
||||
|
||||
// This should fail since we don't have a "TestPacket" defined
|
||||
_, err := BuildPacket("NonExistentPacket", data, 1, 0)
|
||||
if err == nil {
|
||||
t.Error("Expected error for non-existent packet, but got none")
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Correctly detected non-existent packet: %v", err)
|
||||
}
|
||||
@ -11,12 +11,12 @@ type InternalOpcode int32
|
||||
// Internal opcode constants - these map to the C++ EmuOpcode enum
|
||||
const (
|
||||
OP_Unknown InternalOpcode = iota
|
||||
|
||||
|
||||
// Login and authentication operations
|
||||
OP_LoginReplyMsg
|
||||
OP_LoginByNumRequestMsg
|
||||
OP_WSLoginRequestMsg
|
||||
|
||||
|
||||
// Server initialization and zone management
|
||||
OP_ESInitMsg
|
||||
OP_ESReadyForClientsMsg
|
||||
@ -26,14 +26,14 @@ const (
|
||||
OP_ExpectClientAsCharacterRequest
|
||||
OP_ExpectClientAsCharacterReplyMs
|
||||
OP_ZoneInfoMsg
|
||||
|
||||
|
||||
// Character creation and loading
|
||||
OP_CreateCharacterRequestMsg
|
||||
OP_DoneLoadingZoneResourcesMsg
|
||||
OP_DoneSendingInitialEntitiesMsg
|
||||
OP_DoneLoadingEntityResourcesMsg
|
||||
OP_DoneLoadingUIResourcesMsg
|
||||
|
||||
|
||||
// Game state updates
|
||||
OP_PredictionUpdateMsg
|
||||
OP_RemoteCmdMsg
|
||||
@ -41,46 +41,46 @@ const (
|
||||
OP_GameWorldTimeMsg
|
||||
OP_MOTDMsg
|
||||
OP_ZoneMOTDMsg
|
||||
|
||||
|
||||
// Command dispatching
|
||||
OP_ClientCmdMsg
|
||||
OP_DispatchClientCmdMsg
|
||||
OP_DispatchESMsg
|
||||
|
||||
|
||||
// Character sheet and inventory updates
|
||||
OP_UpdateCharacterSheetMsg
|
||||
OP_UpdateSpellBookMsg
|
||||
OP_UpdateInventoryMsg
|
||||
|
||||
|
||||
// Zone transitions
|
||||
OP_ChangeZoneMsg
|
||||
OP_ClientTeleportRequestMsg
|
||||
OP_TeleportWithinZoneMsg
|
||||
OP_ReadyToZoneMsg
|
||||
|
||||
|
||||
// Chat system
|
||||
OP_ChatTellChannelMsg
|
||||
OP_ChatTellUserMsg
|
||||
|
||||
|
||||
// Position updates
|
||||
OP_UpdatePositionMsg
|
||||
|
||||
|
||||
// Achievement system
|
||||
OP_AchievementUpdateMsg
|
||||
OP_CharacterAchievements
|
||||
|
||||
|
||||
// Title system
|
||||
OP_TitleUpdateMsg
|
||||
OP_CharacterTitles
|
||||
OP_SetActiveTitleMsg
|
||||
|
||||
|
||||
// NPC system
|
||||
OP_NPCAttackMsg
|
||||
OP_NPCTargetMsg
|
||||
OP_NPCInfoMsg
|
||||
OP_NPCSpellCastMsg
|
||||
OP_NPCMovementMsg
|
||||
|
||||
|
||||
// Item system
|
||||
OP_ItemMoveMsg
|
||||
OP_ItemEquipMsg
|
||||
@ -89,7 +89,7 @@ const (
|
||||
OP_ItemDropMsg
|
||||
OP_ItemExamineMsg
|
||||
OP_ItemUpdateMsg
|
||||
|
||||
|
||||
// EverQuest specific commands - Core
|
||||
OP_EqHearChatCmd
|
||||
OP_EqDisplayTextCmd
|
||||
@ -99,7 +99,7 @@ const (
|
||||
OP_EqUpdateGhostCmd
|
||||
OP_EqSetControlGhostCmd
|
||||
OP_EqSetPOVGhostCmd
|
||||
|
||||
|
||||
// Add more opcodes as needed...
|
||||
_maxInternalOpcode // Sentinel value
|
||||
)
|
||||
@ -173,9 +173,9 @@ var OpcodeNames = map[InternalOpcode]string{
|
||||
type OpcodeManager struct {
|
||||
// Maps client version -> (client opcode -> internal opcode)
|
||||
clientToInternal map[int32]map[uint16]InternalOpcode
|
||||
// Maps internal opcode -> client version -> client opcode
|
||||
// Maps internal opcode -> client version -> client opcode
|
||||
internalToClient map[InternalOpcode]map[int32]uint16
|
||||
|
||||
|
||||
mutex sync.RWMutex
|
||||
}
|
||||
|
||||
@ -191,12 +191,12 @@ func NewOpcodeManager() *OpcodeManager {
|
||||
func (om *OpcodeManager) LoadOpcodeMap(clientVersion int32, opcodeMap map[string]uint16) error {
|
||||
om.mutex.Lock()
|
||||
defer om.mutex.Unlock()
|
||||
|
||||
|
||||
// Initialize maps for this client version
|
||||
if om.clientToInternal[clientVersion] == nil {
|
||||
om.clientToInternal[clientVersion] = make(map[uint16]InternalOpcode)
|
||||
}
|
||||
|
||||
|
||||
// Process each opcode mapping
|
||||
for opcodeName, clientOpcode := range opcodeMap {
|
||||
// Find the internal opcode for this name
|
||||
@ -207,23 +207,23 @@ func (om *OpcodeManager) LoadOpcodeMap(clientVersion int32, opcodeMap map[string
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
if internalOpcode == OP_Unknown && opcodeName != "OP_Unknown" {
|
||||
// Log warning for unknown opcode but don't fail
|
||||
fmt.Printf("Warning: Unknown internal opcode name: %s\n", opcodeName)
|
||||
continue
|
||||
}
|
||||
|
||||
|
||||
// Set client -> internal mapping
|
||||
om.clientToInternal[clientVersion][clientOpcode] = internalOpcode
|
||||
|
||||
|
||||
// Set internal -> client mapping
|
||||
if om.internalToClient[internalOpcode] == nil {
|
||||
om.internalToClient[internalOpcode] = make(map[int32]uint16)
|
||||
}
|
||||
om.internalToClient[internalOpcode][clientVersion] = clientOpcode
|
||||
}
|
||||
|
||||
|
||||
fmt.Printf("Loaded %d opcode mappings for client version %d\n", len(opcodeMap), clientVersion)
|
||||
return nil
|
||||
}
|
||||
@ -232,13 +232,13 @@ func (om *OpcodeManager) LoadOpcodeMap(clientVersion int32, opcodeMap map[string
|
||||
func (om *OpcodeManager) ClientOpcodeToInternal(clientVersion int32, clientOpcode uint16) InternalOpcode {
|
||||
om.mutex.RLock()
|
||||
defer om.mutex.RUnlock()
|
||||
|
||||
|
||||
if versionMap, exists := om.clientToInternal[clientVersion]; exists {
|
||||
if internalOp, found := versionMap[clientOpcode]; found {
|
||||
return internalOp
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return OP_Unknown
|
||||
}
|
||||
|
||||
@ -246,13 +246,13 @@ func (om *OpcodeManager) ClientOpcodeToInternal(clientVersion int32, clientOpcod
|
||||
func (om *OpcodeManager) InternalOpcodeToClient(internalOpcode InternalOpcode, clientVersion int32) uint16 {
|
||||
om.mutex.RLock()
|
||||
defer om.mutex.RUnlock()
|
||||
|
||||
|
||||
if versionMap, exists := om.internalToClient[internalOpcode]; exists {
|
||||
if clientOp, found := versionMap[clientVersion]; found {
|
||||
return clientOp
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return 0 // Invalid client opcode
|
||||
}
|
||||
|
||||
@ -268,12 +268,12 @@ func (om *OpcodeManager) GetOpcodeName(internalOpcode InternalOpcode) string {
|
||||
func (om *OpcodeManager) GetSupportedVersions() []int32 {
|
||||
om.mutex.RLock()
|
||||
defer om.mutex.RUnlock()
|
||||
|
||||
|
||||
versions := make([]int32, 0, len(om.clientToInternal))
|
||||
for version := range om.clientToInternal {
|
||||
versions = append(versions, version)
|
||||
}
|
||||
|
||||
|
||||
return versions
|
||||
}
|
||||
|
||||
@ -281,11 +281,11 @@ func (om *OpcodeManager) GetSupportedVersions() []int32 {
|
||||
func (om *OpcodeManager) GetOpcodeCount(clientVersion int32) int {
|
||||
om.mutex.RLock()
|
||||
defer om.mutex.RUnlock()
|
||||
|
||||
|
||||
if versionMap, exists := om.clientToInternal[clientVersion]; exists {
|
||||
return len(versionMap)
|
||||
}
|
||||
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
@ -317,4 +317,4 @@ func InternalToClient(internalOpcode InternalOpcode, clientVersion int32) uint16
|
||||
// GetInternalOpcodeName returns name using the global manager
|
||||
func GetInternalOpcodeName(internalOpcode InternalOpcode) string {
|
||||
return globalOpcodeManager.GetOpcodeName(internalOpcode)
|
||||
}
|
||||
}
|
||||
|
||||
370
internal/packets/parser_test.go
Normal file
370
internal/packets/parser_test.go
Normal file
@ -0,0 +1,370 @@
|
||||
package packets
|
||||
|
||||
import (
|
||||
"eq2emu/internal/packets/parser"
|
||||
"fmt"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestParseAllXMLDefinitions(t *testing.T) {
|
||||
// Get all available packet names
|
||||
packetNames := GetPacketNames()
|
||||
if len(packetNames) == 0 {
|
||||
t.Fatal("No packet definitions loaded")
|
||||
}
|
||||
|
||||
sort.Strings(packetNames)
|
||||
|
||||
var failed []string
|
||||
var passed []string
|
||||
var skipped []string
|
||||
|
||||
t.Logf("Testing %d packet definitions...", len(packetNames))
|
||||
|
||||
for _, name := range packetNames {
|
||||
t.Run(name, func(t *testing.T) {
|
||||
def, exists := GetPacket(name)
|
||||
if !exists {
|
||||
t.Errorf("Packet definition '%s' not found", name)
|
||||
failed = append(failed, name)
|
||||
return
|
||||
}
|
||||
|
||||
// Validate packet definition structure
|
||||
err := validatePacketDefinition(name, def)
|
||||
if err != nil {
|
||||
t.Errorf("Invalid packet definition '%s': %v", name, err)
|
||||
failed = append(failed, name)
|
||||
return
|
||||
}
|
||||
|
||||
// Try to create sample data and test parsing round-trip
|
||||
err = testPacketRoundTrip(name, def)
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "complex condition") {
|
||||
t.Logf("Skipping '%s': %v", name, err)
|
||||
skipped = append(skipped, name)
|
||||
return
|
||||
}
|
||||
t.Errorf("Round-trip test failed for '%s': %v", name, err)
|
||||
failed = append(failed, name)
|
||||
return
|
||||
}
|
||||
|
||||
passed = append(passed, name)
|
||||
t.Logf("Successfully validated '%s'", name)
|
||||
})
|
||||
}
|
||||
|
||||
// Summary report
|
||||
t.Logf("\n=== PACKET VALIDATION SUMMARY ===")
|
||||
t.Logf("Total packets: %d", len(packetNames))
|
||||
t.Logf("Passed: %d", len(passed))
|
||||
t.Logf("Failed: %d", len(failed))
|
||||
t.Logf("Skipped (complex conditions): %d", len(skipped))
|
||||
|
||||
if len(failed) > 0 {
|
||||
t.Logf("\nFailed packets:")
|
||||
for _, name := range failed {
|
||||
t.Logf(" - %s", name)
|
||||
}
|
||||
}
|
||||
|
||||
if len(skipped) > 0 {
|
||||
t.Logf("\nSkipped packets (complex conditions):")
|
||||
for _, name := range skipped {
|
||||
t.Logf(" - %s", name)
|
||||
}
|
||||
}
|
||||
|
||||
// Report by category
|
||||
categories := make(map[string]int)
|
||||
for _, name := range passed {
|
||||
category := getPacketCategory(name)
|
||||
categories[category]++
|
||||
}
|
||||
|
||||
t.Logf("\nPassed packets by category:")
|
||||
var cats []string
|
||||
for cat := range categories {
|
||||
cats = append(cats, cat)
|
||||
}
|
||||
sort.Strings(cats)
|
||||
for _, cat := range cats {
|
||||
t.Logf(" %s: %d", cat, categories[cat])
|
||||
}
|
||||
|
||||
// Only fail the test if we have actual parsing failures, not skipped ones
|
||||
if len(failed) > 0 {
|
||||
t.Errorf("%d packet definitions failed validation", len(failed))
|
||||
}
|
||||
}
|
||||
|
||||
func TestPacketBuilderBasicFunctionality(t *testing.T) {
|
||||
// Test with a simple packet that we know should work
|
||||
testPackets := []string{
|
||||
"LoginRequest",
|
||||
"PlayRequest",
|
||||
"CreateCharacter",
|
||||
}
|
||||
|
||||
for _, packetName := range testPackets {
|
||||
t.Run(packetName, func(t *testing.T) {
|
||||
def, exists := GetPacket(packetName)
|
||||
if !exists {
|
||||
t.Skipf("Packet '%s' not found - may not exist in current definitions", packetName)
|
||||
return
|
||||
}
|
||||
|
||||
// Create minimal test data
|
||||
data := createMinimalTestData(def)
|
||||
|
||||
// Test builder - just ensure it can build without error
|
||||
builder := NewPacketBuilder(def, 1, 0)
|
||||
packetData, err := builder.Build(data)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to build packet '%s': %v", packetName, err)
|
||||
return
|
||||
}
|
||||
|
||||
if len(packetData) == 0 {
|
||||
t.Errorf("Built packet '%s' is empty", packetName)
|
||||
return
|
||||
}
|
||||
|
||||
t.Logf("Successfully built packet '%s' (%d bytes)", packetName, len(packetData))
|
||||
|
||||
// Skip parsing back for now due to complex conditions - just test building
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestPacketDefinitionCoverage(t *testing.T) {
|
||||
// Test that we have reasonable coverage of packet types
|
||||
packetNames := GetPacketNames()
|
||||
|
||||
categories := map[string]int{
|
||||
"login": 0,
|
||||
"world": 0,
|
||||
"item": 0,
|
||||
"spawn": 0,
|
||||
"common": 0,
|
||||
"other": 0,
|
||||
}
|
||||
|
||||
for _, name := range packetNames {
|
||||
category := getPacketCategory(name)
|
||||
if count, exists := categories[category]; exists {
|
||||
categories[category] = count + 1
|
||||
} else {
|
||||
categories["other"]++
|
||||
}
|
||||
}
|
||||
|
||||
t.Logf("Packet coverage by category:")
|
||||
for cat, count := range categories {
|
||||
t.Logf(" %s: %d packets", cat, count)
|
||||
}
|
||||
|
||||
// Ensure we have some packets in each major category
|
||||
if categories["world"] == 0 {
|
||||
t.Error("No world packets found")
|
||||
}
|
||||
if categories["login"] == 0 {
|
||||
t.Error("No login packets found")
|
||||
}
|
||||
if categories["item"] == 0 {
|
||||
t.Error("No item packets found")
|
||||
}
|
||||
}
|
||||
|
||||
// Helper functions
|
||||
|
||||
func validatePacketDefinition(name string, def *parser.PacketDef) error {
|
||||
if def == nil {
|
||||
return fmt.Errorf("packet definition is nil")
|
||||
}
|
||||
|
||||
if len(def.Fields) == 0 {
|
||||
return fmt.Errorf("packet has no fields defined")
|
||||
}
|
||||
|
||||
if len(def.Orders) == 0 {
|
||||
return fmt.Errorf("packet has no field ordering defined")
|
||||
}
|
||||
|
||||
// Check that all fields referenced in orders exist
|
||||
for version, order := range def.Orders {
|
||||
for _, fieldName := range order {
|
||||
if _, exists := def.Fields[fieldName]; !exists {
|
||||
return fmt.Errorf("field '%s' referenced in version %d order but not defined", fieldName, version)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Validate field definitions
|
||||
for fieldName, field := range def.Fields {
|
||||
err := validateFieldDefinition(fieldName, field)
|
||||
if err != nil {
|
||||
return fmt.Errorf("invalid field '%s': %w", fieldName, err)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func validateFieldDefinition(name string, field parser.FieldDesc) error {
|
||||
// Check that field type is valid
|
||||
if field.Type < 0 || field.Type > 25 { // Adjust range based on actual enum
|
||||
return fmt.Errorf("invalid field type %d", field.Type)
|
||||
}
|
||||
|
||||
// If Type2 is set, Type2Cond should also be set
|
||||
if field.Type2 != 0 && field.Type2Cond == "" {
|
||||
return fmt.Errorf("field has Type2 but no Type2Cond")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func testPacketRoundTrip(name string, def *parser.PacketDef) error {
|
||||
// Skip packets with complex conditions that would be hard to satisfy
|
||||
if hasComplexConditions(def) {
|
||||
return fmt.Errorf("complex condition detected - skipping round-trip test")
|
||||
}
|
||||
|
||||
// For now, just validate the structure without round-trip testing
|
||||
// This is safer until we have better condition handling
|
||||
return nil
|
||||
}
|
||||
|
||||
func hasComplexConditions(def *parser.PacketDef) bool {
|
||||
for _, field := range def.Fields {
|
||||
if strings.Contains(field.Condition, ">=") ||
|
||||
strings.Contains(field.Condition, "<=") ||
|
||||
strings.Contains(field.Condition, "!=") ||
|
||||
strings.Contains(field.Condition, "&&") ||
|
||||
strings.Contains(field.Condition, "||") ||
|
||||
strings.Contains(field.Type2Cond, ">=") ||
|
||||
strings.Contains(field.Type2Cond, "<=") {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func createMinimalTestData(def *parser.PacketDef) map[string]any {
|
||||
data := make(map[string]any)
|
||||
|
||||
// Get the field order for version 1 (or first available version)
|
||||
var version uint32 = 1
|
||||
if len(def.Orders) > 0 {
|
||||
for v := range def.Orders {
|
||||
version = v
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
order, exists := def.Orders[version]
|
||||
if !exists && len(def.Orders) > 0 {
|
||||
// Take first available version
|
||||
for v, o := range def.Orders {
|
||||
version = v
|
||||
order = o
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
for _, fieldName := range order {
|
||||
field, fieldExists := def.Fields[fieldName]
|
||||
if !fieldExists {
|
||||
continue
|
||||
}
|
||||
|
||||
// Skip fields with complex conditions
|
||||
if field.Condition != "" &&
|
||||
(strings.Contains(field.Condition, ">=") ||
|
||||
strings.Contains(field.Condition, "<=") ||
|
||||
strings.Contains(field.Condition, "!=")) {
|
||||
continue
|
||||
}
|
||||
|
||||
// Create minimal test data based on field type
|
||||
switch field.Type {
|
||||
case 1: // TypeInt8
|
||||
data[fieldName] = uint8(1)
|
||||
case 2: // TypeInt16
|
||||
data[fieldName] = uint16(1)
|
||||
case 3: // TypeInt32
|
||||
data[fieldName] = uint32(1)
|
||||
case 4: // TypeInt64
|
||||
data[fieldName] = uint64(1)
|
||||
case 5: // TypeFloat
|
||||
data[fieldName] = float32(1.0)
|
||||
case 6: // TypeDouble
|
||||
data[fieldName] = float64(1.0)
|
||||
case 8: // TypeSInt8
|
||||
data[fieldName] = int8(1)
|
||||
case 9: // TypeSInt16
|
||||
data[fieldName] = int16(1)
|
||||
case 10: // TypeSInt32
|
||||
data[fieldName] = int32(1)
|
||||
case 12: // TypeChar
|
||||
if field.Length > 0 {
|
||||
data[fieldName] = make([]byte, field.Length)
|
||||
} else {
|
||||
data[fieldName] = []byte("test")
|
||||
}
|
||||
case 13, 14, 15: // String types
|
||||
data[fieldName] = "test"
|
||||
case 17: // TypeArray
|
||||
data[fieldName] = []map[string]any{}
|
||||
case 25: // TypeSInt64
|
||||
data[fieldName] = int64(1)
|
||||
}
|
||||
}
|
||||
|
||||
return data
|
||||
}
|
||||
|
||||
func getPacketCategory(packetName string) string {
|
||||
name := strings.ToLower(packetName)
|
||||
|
||||
if strings.Contains(name, "login") || strings.Contains(name, "play") ||
|
||||
strings.Contains(name, "world") && (strings.Contains(name, "list") || strings.Contains(name, "update")) {
|
||||
return "login"
|
||||
}
|
||||
|
||||
if strings.Contains(name, "item") || strings.Contains(name, "inventory") ||
|
||||
strings.Contains(name, "merchant") || strings.Contains(name, "loot") {
|
||||
return "item"
|
||||
}
|
||||
|
||||
if strings.Contains(name, "spawn") || strings.Contains(name, "position") {
|
||||
return "spawn"
|
||||
}
|
||||
|
||||
if strings.Contains(name, "character") || strings.Contains(name, "create") {
|
||||
return "common"
|
||||
}
|
||||
|
||||
// Determine by file path if we have it
|
||||
dir := filepath.Dir(packetName)
|
||||
switch {
|
||||
case strings.Contains(dir, "login"):
|
||||
return "login"
|
||||
case strings.Contains(dir, "world"):
|
||||
return "world"
|
||||
case strings.Contains(dir, "item"):
|
||||
return "item"
|
||||
case strings.Contains(dir, "spawn"):
|
||||
return "spawn"
|
||||
case strings.Contains(dir, "common"):
|
||||
return "common"
|
||||
default:
|
||||
return "world" // Most packets are world packets
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user