Merge branch '218_promesses_client' into 'master'

218 promesses client



See merge request !80

dfssc/api/client.pb.go

@@ -51,8 +51,13 @@ type Context struct {
 	ContractDocumentHash []byte `protobuf:"bytes,5,opt,name=contractDocumentHash,proto3" json:"contractDocumentHash,omitempty"`
 	// / The unique signature attemp ID, as provided by the platform during the ready signal
 	SignatureUUID string `protobuf:"bytes,6,opt,name=signatureUUID" json:"signatureUUID,omitempty"`
+	// / The TTP address provided by the platform, to use in case of issue during signature.
+	// / Empty if no TTP used.
+	TtpAddrPort string `protobuf:"bytes,7,opt,name=ttpAddrPort" json:"ttpAddrPort,omitempty"`
+	// / The TTP certificate SHA-512 hash
+	TtpHash []byte `protobuf:"bytes,8,opt,name=ttpHash,proto3" json:"ttpHash,omitempty"`
 	// / The signed metadata seal, as provided by the platform during the ready signal
-	Seal []byte `protobuf:"bytes,7,opt,name=seal,proto3" json:"seal,omitempty"`
+	Seal []byte `protobuf:"bytes,10,opt,name=seal,proto3" json:"seal,omitempty"`
 }
 
 func (m *Context) Reset()                    { *m = Context{} }
@@ -262,27 +267,31 @@ var _Client_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
-	// 348 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x84, 0x91, 0xcf, 0x4e, 0xea, 0x40,
-	0x14, 0xc6, 0xe9, 0xe5, 0x4f, 0xe1, 0xdc, 0xc2, 0x25, 0x93, 0x6b, 0x32, 0x41, 0x49, 0x48, 0xe3,
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-	0xe3, 0xa3, 0xa3, 0x20, 0x47, 0x91, 0x09, 0xb7, 0xd1, 0x66, 0x5b, 0x79, 0xe2, 0x8f, 0x00, 0xc2,
-	0x85, 0xce, 0x1d, 0xee, 0x1d, 0xe3, 0x30, 0x34, 0x28, 0x55, 0x51, 0x46, 0xdc, 0xe1, 0x61, 0x25,
-	0xec, 0x0b, 0x0f, 0x26, 0xc1, 0x34, 0x62, 0x67, 0xd0, 0xb7, 0x98, 0xa7, 0x68, 0x6a, 0xf9, 0x0f,
-	0xc9, 0x43, 0xe8, 0x5a, 0x7c, 0xdd, 0x61, 0x2e, 0x91, 0x37, 0x27, 0xcd, 0x69, 0x9f, 0xfd, 0x83,
-	0xd0, 0xaa, 0xe7, 0x1c, 0x8d, 0xe5, 0x2d, 0x2f, 0x44, 0xec, 0x02, 0xfe, 0x4b, 0x1f, 0x6f, 0x84,
-	0x74, 0x4b, 0x2d, 0x77, 0x5b, 0x1f, 0x4d, 0x01, 0xed, 0x63, 0xae, 0xb7, 0x0b, 0xb7, 0x33, 0xb8,
-	0x5e, 0xdf, 0x2e, 0x79, 0xc7, 0xcb, 0x3d, 0x16, 0x41, 0xcb, 0xa2, 0xc8, 0x78, 0x58, 0x9a, 0xe2,
-	0x15, 0x84, 0xf7, 0x46, 0x6f, 0x95, 0x45, 0x36, 0x86, 0x50, 0x56, 0xb0, 0x04, 0xf6, 0x77, 0x1e,
-	0x25, 0xbe, 0x53, 0x52, 0x17, 0xe8, 0x43, 0x5b, 0x79, 0xca, 0x3d, 0xe1, 0x11, 0x4c, 0x21, 0x0e,
-	0x99, 0x16, 0xa9, 0xa7, 0x2b, 0x93, 0xae, 0xa1, 0xf7, 0x50, 0x7f, 0xee, 0xb7, 0xac, 0x93, 0x65,
-	0x2a, 0x1b, 0x73, 0x68, 0xaf, 0x30, 0xcb, 0x74, 0x79, 0xf2, 0xe6, 0x0b, 0x2a, 0x9d, 0xd3, 0x62,
-	0x6f, 0xfe, 0x1e, 0x40, 0x67, 0x41, 0x3f, 0x9e, 0x25, 0x10, 0x3d, 0x1a, 0x14, 0xae, 0x06, 0xae,
-	0x32, 0xbf, 0xa6, 0xd1, 0x80, 0xa6, 0x1b, 0x63, 0xb4, 0x59, 0xe8, 0x14, 0xe3, 0x06, 0x9b, 0xc3,
-	0x80, 0xfc, 0xdf, 0x58, 0x95, 0xe7, 0x38, 0xff, 0xb0, 0x73, 0x09, 0xdd, 0xa5, 0xb2, 0x52, 0x7b,
-	0x08, 0x06, 0x74, 0x4a, 0x5c, 0xa3, 0x93, 0xf7, 0xb8, 0xf1, 0xd4, 0xa1, 0xfb, 0xbd, 0xfa, 0x0c,
-	0x00, 0x00, 0xff, 0xff, 0x64, 0x27, 0xd3, 0xc2, 0x22, 0x02, 0x00, 0x00,
+	// 404 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x52, 0xdd, 0xca, 0xda, 0x40,
+	0x10, 0xf5, 0x3f, 0x3a, 0x46, 0x29, 0x8b, 0x17, 0x21, 0xa5, 0x60, 0x83, 0x14, 0xe9, 0x45, 0x04,
+	0xfb, 0x04, 0x45, 0x0b, 0x96, 0x52, 0x90, 0xb4, 0x3e, 0xc0, 0x76, 0x33, 0xb6, 0x0b, 0x31, 0x9b,
+	0xee, 0xae, 0x45, 0x5f, 0xa3, 0xaf, 0xd3, 0x97, 0xeb, 0x66, 0x62, 0xfc, 0x94, 0xcf, 0x8b, 0xef,
+	0x26, 0xec, 0x39, 0x73, 0x76, 0xce, 0xec, 0xc9, 0xc0, 0xeb, 0x74, 0x6f, 0xcc, 0xa2, 0xfc, 0x88,
+	0x05, 0x2f, 0xe4, 0x42, 0x64, 0x12, 0x73, 0x1b, 0x17, 0x5a, 0x59, 0xc5, 0xda, 0x8e, 0x09, 0xdf,
+	0x5c, 0x15, 0x05, 0x29, 0x8a, 0x8c, 0xdb, 0xbd, 0xd2, 0x87, 0x4a, 0x13, 0xfd, 0x6b, 0x81, 0xb7,
+	0x52, 0xb9, 0xc5, 0x93, 0x65, 0xef, 0xe1, 0x95, 0x46, 0x21, 0x8b, 0xb2, 0xc5, 0x17, 0x3c, 0x6f,
+	0xb8, 0xf9, 0x15, 0x34, 0xa7, 0xcd, 0xb9, 0x9f, 0x3c, 0xe3, 0xd9, 0x0c, 0x46, 0x06, 0xf3, 0x14,
+	0x75, 0x2d, 0x6c, 0x91, 0xf0, 0x9e, 0x64, 0x21, 0xf4, 0x0d, 0xfe, 0x3e, 0x62, 0x2e, 0x30, 0x68,
+	0x4f, 0xdb, 0xf3, 0x51, 0x72, 0xc5, 0x2c, 0x00, 0xcf, 0xc8, 0x9f, 0x39, 0x6a, 0x13, 0x74, 0x5c,
+	0xc9, 0x4f, 0x6a, 0xc8, 0x96, 0x30, 0x11, 0x6e, 0x24, 0xcd, 0x85, 0x5d, 0x2b, 0x71, 0x3c, 0x38,
+	0x5b, 0xb2, 0xe8, 0x92, 0xc5, 0xc3, 0x1a, 0xcd, 0xe3, 0xae, 0x73, 0x7b, 0xd4, 0xb8, 0xdb, 0x7d,
+	0x5e, 0x07, 0x3d, 0x27, 0x1e, 0x24, 0xf7, 0x24, 0x9b, 0xc2, 0xd0, 0xda, 0xe2, 0x63, 0x9a, 0xea,
+	0xad, 0xd2, 0x36, 0xf0, 0x48, 0x73, 0x4b, 0x95, 0x53, 0x39, 0x48, 0x76, 0x7d, 0xb2, 0xab, 0x21,
+	0x63, 0xd0, 0x31, 0xc8, 0xb3, 0x00, 0x88, 0xa6, 0x73, 0xc4, 0xc1, 0xdb, 0x6a, 0x75, 0x90, 0x06,
+	0xd9, 0x3b, 0xf0, 0x44, 0x95, 0x23, 0x65, 0x36, 0x5c, 0xfa, 0xb1, 0x8b, 0x3b, 0xbe, 0x64, 0x9b,
+	0xd4, 0x45, 0x36, 0x81, 0xae, 0x74, 0x11, 0x9d, 0x28, 0xb0, 0x51, 0x52, 0x81, 0xd2, 0xb6, 0xe0,
+	0xe7, 0x4c, 0xf1, 0xd4, 0xe5, 0x44, 0xb6, 0x17, 0x18, 0x7d, 0x85, 0xc1, 0xb7, 0xfa, 0x0d, 0x2f,
+	0x36, 0xb9, 0x69, 0xd7, 0xba, 0x6f, 0xf7, 0x16, 0xba, 0x1b, 0xcc, 0x32, 0x55, 0x4a, 0xfe, 0xb8,
+	0xb0, 0xa5, 0xca, 0xa9, 0xd5, 0x20, 0xa9, 0xe1, 0xf2, 0x6f, 0x13, 0x7a, 0x2b, 0xda, 0x23, 0x16,
+	0x83, 0xff, 0x5d, 0x23, 0xb7, 0xf5, 0x23, 0x2b, 0xbb, 0x0b, 0x0a, 0xc7, 0x84, 0x3e, 0x69, 0xad,
+	0xf4, 0x4a, 0xa5, 0x18, 0x35, 0xdc, 0x9f, 0x1b, 0x93, 0xfe, 0x69, 0xe2, 0x4a, 0x73, 0xc5, 0x0f,
+	0xee, 0xcc, 0xa0, 0xbf, 0x96, 0x46, 0x28, 0x67, 0xcf, 0x80, 0xaa, 0x34, 0x60, 0x78, 0x73, 0x8e,
+	0x1a, 0x3f, 0x7a, 0xb4, 0xae, 0x1f, 0xfe, 0x07, 0x00, 0x00, 0xff, 0xff, 0x63, 0xf5, 0x69, 0x69,
+	0xf1, 0x02, 0x00, 0x00,
 }

dfssc/api/client.proto

@@ -30,8 +30,13 @@ message Context {
 	bytes contractDocumentHash = 5;
 	/// The unique signature attemp ID, as provided by the platform during the ready signal
 	string signatureUUID = 6;
+	/// The TTP address provided by the platform, to use in case of issue during signature.
+	/// Empty if no TTP used.
+	string ttpAddrPort = 7;
+	/// The TTP certificate SHA-512 hash
+	bytes ttpHash = 8;
 	/// The signed metadata seal, as provided by the platform during the ready signal
-	bytes seal = 7;
+	bytes seal = 10;
 }
 
 message Promise {

dfssc/cmd/sign.go

@@ -82,13 +82,6 @@ var signCmd = &cobra.Command{
 			os.Exit(1)
 		}
 
-		// Persist evidencies, if any
-		err = manager.PersistSignaturesToFile()
-		if err != nil {
-			fmt.Fprintln(os.Stderr, err)
-			os.Exit(1)
-		}
-
 		fmt.Println("Signature complete! See .proof file for evidences.")
 	},
 }

dfssc/common/sequence_analysis.go

@@ -4,6 +4,11 @@ import (
 	"errors"
 )
 
+// SequenceCoordinate : contains both the sequence id of a signer, and the index of the occurence in the sequence
+type SequenceCoordinate struct {
+	Signer, Index uint32
+}
+
 // FindNextIndex analyses the specified sequence and tries to find the next occurence of id after the specified index (excluded)
 // Therefore to find the first occurence of the id in the sequence, use -1 as the index
 //
@@ -30,8 +35,8 @@ func FindNextIndex(s []uint32, id uint32, index int) (int, error) {
 //
 // If the index is not the one of the specified id in the sequence, the result still holds, but may be incomplete for your needs
 // If the id is not valid for the specified sequence, the result will be the set of ids of the sequence
-func GetPendingSet(s []uint32, id uint32, index int) ([]uint32, error) {
-	res := []uint32{}
+func GetPendingSet(s []uint32, id uint32, index int) ([]SequenceCoordinate, error) {
+	res := []SequenceCoordinate{}
 
 	if index >= len(s) || index < 0 {
 		return res, errors.New("Index out of range")
@@ -44,8 +49,8 @@ func GetPendingSet(s []uint32, id uint32, index int) ([]uint32, error) {
 
 	for curIndex > -1 && s[curIndex] != id {
 		curID := s[curIndex]
-		if !contains(res, curID) {
-			res = append(res, curID)
+		if !containsCoordinate(res, curID) {
+			res = append(res, SequenceCoordinate{Signer: curID, Index: uint32(curIndex)})
 		}
 		curIndex--
 	}
@@ -59,8 +64,8 @@ func GetPendingSet(s []uint32, id uint32, index int) ([]uint32, error) {
 //
 // If the index is not the one of the specified id in the sequence, the result still holds, but may be incomplete for your needs
 // If the id is not valid for the specified sequence, the result will be the set of ids of the sequence
-func GetSendSet(s []uint32, id uint32, index int) ([]uint32, error) {
-	res := []uint32{}
+func GetSendSet(s []uint32, id uint32, index int) ([]SequenceCoordinate, error) {
+	res := []SequenceCoordinate{}
 
 	if index >= len(s) || index < 0 {
 		return res, errors.New("Index out of range")
@@ -73,8 +78,8 @@ func GetSendSet(s []uint32, id uint32, index int) ([]uint32, error) {
 
 	for curIndex < len(s) && s[curIndex] != id {
 		curID := s[curIndex]
-		if !contains(res, curID) {
-			res = append(res, curID)
+		if !containsCoordinate(res, curID) {
+			res = append(res, SequenceCoordinate{Signer: curID, Index: uint32(curIndex)})
 		}
 		curIndex++
 	}
@@ -82,7 +87,17 @@ func GetSendSet(s []uint32, id uint32, index int) ([]uint32, error) {
 	return res, nil
 }
 
-// contains determines if s contains e
+// containsCoordinate: determines if s contains the specified signer sequence id e
+func containsCoordinate(s []SequenceCoordinate, e uint32) bool {
+	for _, a := range s {
+		if a.Signer == e {
+			return true
+		}
+	}
+	return false
+}
+
+// contains : determines if s contains e
 func contains(s []uint32, e uint32) bool {
 	for _, a := range s {
 		if a == e {
@@ -108,7 +123,17 @@ func GetAllButOne(s []uint32, e uint32) []uint32 {
 	return res
 }
 
-// Remove an ID from the sequence
+// RemoveCoordinate : removes the first occurence of an ID from the coordinates array
+func RemoveCoordinate(s []SequenceCoordinate, e uint32) ([]SequenceCoordinate, error) {
+	for i, a := range s {
+		if a.Signer == e {
+			return append(s[:i], s[i+1:]...), nil
+		}
+	}
+	return s, errors.New("ID not in sequence")
+}
+
+// Remove the first occurence of an ID from the ids array
 func Remove(s []uint32, e uint32) ([]uint32, error) {
 	for i, a := range s {
 		if a == e {

dfssc/common/sequence_analysis_test.go

@@ -50,19 +50,24 @@ func TestGetPendingSet(t *testing.T) {
 
 	res, err = GetPendingSet(s, id, 1)
 	assert.Equal(t, len(res), 1)
-	assert.Equal(t, res[0], uint32(0))
+	assert.Equal(t, res[0].Signer, uint32(0))
+	assert.Equal(t, res[0].Index, uint32(0))
 	assert.Equal(t, err, nil)
 
 	res, err = GetPendingSet(s, id, 2)
 	assert.Equal(t, len(res), 2)
-	assert.Equal(t, res[0], uint32(1))
-	assert.Equal(t, res[1], uint32(0))
+	assert.Equal(t, res[0].Signer, uint32(1))
+	assert.Equal(t, res[0].Index, uint32(1))
+	assert.Equal(t, res[1].Signer, uint32(0))
+	assert.Equal(t, res[1].Index, uint32(0))
 	assert.Equal(t, err, nil)
 
 	res, err = GetPendingSet(s, id, 5)
 	assert.Equal(t, len(res), 2)
-	assert.Equal(t, res[0], uint32(1))
-	assert.Equal(t, res[1], uint32(0))
+	assert.Equal(t, res[0].Signer, uint32(1))
+	assert.Equal(t, res[0].Index, uint32(4))
+	assert.Equal(t, res[1].Signer, uint32(0))
+	assert.Equal(t, res[1].Index, uint32(3))
 	assert.Equal(t, err, nil)
 
 	res, err = GetPendingSet(s, id, -1)
@@ -76,11 +81,23 @@ func TestGetPendingSet(t *testing.T) {
 	s = []uint32{0, 1, 0, 2}
 	res, err = GetPendingSet(s, id, 3)
 	assert.Equal(t, len(res), 2)
-	assert.Equal(t, res[0], uint32(0))
-	assert.Equal(t, res[1], uint32(1))
+	assert.Equal(t, res[0].Signer, uint32(0))
+	assert.Equal(t, res[0].Index, uint32(2))
+	assert.Equal(t, res[1].Signer, uint32(1))
+	assert.Equal(t, res[1].Index, uint32(1))
 	assert.Equal(t, err, nil)
 }
 
+func TestContainsCoordinate(t *testing.T) {
+	var s []SequenceCoordinate
+	s = append(s, SequenceCoordinate{Signer: 0, Index: 0})
+	s = append(s, SequenceCoordinate{Signer: 1, Index: 1})
+
+	assert.Equal(t, containsCoordinate(s, 0), true)
+	assert.Equal(t, containsCoordinate(s, 1), true)
+	assert.Equal(t, containsCoordinate(s, 2), false)
+}
+
 func TestContains(t *testing.T) {
 	s := []uint32{0, 1}
 
@@ -95,19 +112,24 @@ func TestGetSendSet(t *testing.T) {
 
 	res, err := GetSendSet(s, id, 3)
 	assert.Equal(t, len(res), 2)
-	assert.Equal(t, res[0], uint32(1))
-	assert.Equal(t, res[1], uint32(2))
+	assert.Equal(t, res[0].Signer, uint32(1))
+	assert.Equal(t, res[0].Index, uint32(4))
+	assert.Equal(t, res[1].Signer, uint32(2))
+	assert.Equal(t, res[1].Index, uint32(5))
 	assert.Equal(t, err, nil)
 
 	res, err = GetSendSet(s, id, 0)
 	assert.Equal(t, len(res), 2)
-	assert.Equal(t, res[0], uint32(1))
-	assert.Equal(t, res[1], uint32(2))
+	assert.Equal(t, res[0].Signer, uint32(1))
+	assert.Equal(t, res[0].Index, uint32(1))
+	assert.Equal(t, res[1].Signer, uint32(2))
+	assert.Equal(t, res[1].Index, uint32(2))
 	assert.Equal(t, err, nil)
 
 	res, err = GetSendSet(s, 1, 4)
 	assert.Equal(t, len(res), 1)
-	assert.Equal(t, res[0], uint32(2))
+	assert.Equal(t, res[0].Signer, uint32(2))
+	assert.Equal(t, res[0].Index, uint32(5))
 	assert.Equal(t, err, nil)
 
 	res, err = GetSendSet(s, 2, 5)
@@ -139,6 +161,46 @@ func TestGetAllButOne(t *testing.T) {
 	assert.Equal(t, res[2], uint32(2))
 }
 
+func TestRemoveCoordinate(t *testing.T) {
+	var s []SequenceCoordinate
+	s = append(s, SequenceCoordinate{Signer: 0, Index: 0})
+	s = append(s, SequenceCoordinate{Signer: 1, Index: 1})
+
+	assert.Equal(t, len(s), 2)
+	assert.Equal(t, containsCoordinate(s, 0), true)
+	assert.Equal(t, containsCoordinate(s, 1), true)
+
+	s2, err := RemoveCoordinate(s, 3)
+	assert.Equal(t, err.Error(), "ID not in sequence")
+	assert.Equal(t, len(s2), 2)
+	assert.Equal(t, containsCoordinate(s2, 0), true)
+	assert.Equal(t, containsCoordinate(s2, 1), true)
+
+	s3, err := RemoveCoordinate(s, 0)
+	assert.Equal(t, err, nil)
+	assert.Equal(t, len(s3), 1)
+	assert.Equal(t, containsCoordinate(s3, 0), false)
+	assert.Equal(t, containsCoordinate(s3, 1), true)
+}
+
+func TestRemove(t *testing.T) {
+	s := []uint32{0, 1}
+
+	assert.Equal(t, len(s), 2)
+
+	s2, err := Remove(s, 3)
+	assert.Equal(t, err.Error(), "ID not in sequence")
+	assert.Equal(t, len(s2), 2)
+	assert.Equal(t, contains(s2, 0), true)
+	assert.Equal(t, contains(s2, 1), true)
+
+	s3, err := Remove(s, 0)
+	assert.Equal(t, err, nil)
+	assert.Equal(t, len(s3), 1)
+	assert.Equal(t, contains(s3, 0), false)
+	assert.Equal(t, contains(s3, 1), true)
+}
+
 func ExampleFindNextIndex() {
 	s := []uint32{0, 1, 2, 0, 1, 2}
 	id := uint32(2)
@@ -153,6 +215,6 @@ func ExampleFindNextIndex() {
 	fmt.Println("Send Set:", sSet)
 	// Output:
 	// First index: 2
-	// Pending Set: [1 0]
-	// Send Set: [0 1]
+	// Pending Set: [{1 1} {0 0}]
+	// Send Set: [{0 3} {1 4}]
 }

dfssc/sign/promises.go

 package sign
 
 import (
+	"encoding/hex"
 	"errors"
 	"time"
 
@@ -14,20 +15,25 @@ func (m *SignatureManager) createContext(from, to uint32) (*cAPI.Context, error)
 	if int(from) >= len(m.keyHash) || int(to) >= len(m.keyHash) {
 		return nil, errors.New("Invalid id for context creation")
 	}
+
+	h, _ := hex.DecodeString(m.contract.File.Hash)
+
 	return &cAPI.Context{
 		RecipientKeyHash:     m.keyHash[to],
 		SenderKeyHash:        m.keyHash[from],
 		Sequence:             m.sequence,
 		Signers:              m.keyHash,
-		ContractDocumentHash: []byte(m.contract.File.Hash),
+		ContractDocumentHash: h,
 		SignatureUUID:        m.uuid,
+		TtpAddrPort:          m.ttpData.Addrport,
+		TtpHash:              m.ttpData.Hash,
 		Seal:                 m.seal,
 	}, nil
 }
 
 // CreatePromise creates a promise from 'from' to 'to', in the context of the SignatureManager
-// provided the specified sequence indexes are valid
-func (m *SignatureManager) CreatePromise(from, to uint32) (*cAPI.Promise, error) {
+// provided that the specified sequence indexes are valid
+func (m *SignatureManager) CreatePromise(from, to, at uint32) (*cAPI.Promise, error) {
 	context, err := m.createContext(from, to)
 	if err != nil {
 		return nil, err
@@ -38,7 +44,7 @@ func (m *SignatureManager) CreatePromise(from, to uint32) (*cAPI.Promise, error)
 	}
 
 	return &cAPI.Promise{
-		Index:   uint32(m.currentIndex),
+		Index:   at,
 		Context: context,
 		Payload: []byte{0x41},
 	}, nil
@@ -68,15 +74,17 @@ func (m *SignatureManager) SendEvidence(promise *cAPI.Promise, signature *cAPI.S
 	if err == nil && result != nil && result.Code == pAPI.ErrorCode_SUCCESS {
 		m.archives.mutex.Lock()
 		if promise != nil {
-			dAPI.DLog("sent promise to " + mail)
-			m.archives.sentPromises = append(m.archives.sentPromises, promise)
+			dAPI.DLog("successfully sent promise to " + mail)
 		} else {
-			dAPI.DLog("sent signature to " + mail)
+			dAPI.DLog("successfully sent signature to " + mail)
 			m.archives.sentSignatures = append(m.archives.sentSignatures, signature)
 		}
 		m.archives.mutex.Unlock()
 	} else {
-		dAPI.DLog("unable to send evidence to " + mail)
+		dAPI.DLog("was unable to send evidence to " + mail)
+		if err != nil {
+			return
+		}
 		err = errors.New("received wrong error code")
 	}
 

dfssc/sign/protocol.go

@@ -2,14 +2,21 @@
 package sign
 
 import (
+	"bytes"
+	"errors"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"time"
 
 	cAPI "dfss/dfssc/api"
 	"dfss/dfssc/common"
 	dAPI "dfss/dfssd/api"
+	tAPI "dfss/dfsst/api"
+	"dfss/net"
 	"github.com/spf13/viper"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
 )
 
 // Sign performs all the message exchanges for the contract to be signed
@@ -26,7 +33,7 @@ func (m *SignatureManager) Sign() error {
 		m.closeConnections()
 	}()
 
-	myID, nextIndex, err := m.Initialize()
+	nextIndex, err := m.Initialize()
 	if err != nil {
 		return err
 	}
@@ -42,31 +49,38 @@ func (m *SignatureManager) Sign() error {
 
 	// Promess rounds
 	// Follow the sequence until there is no next occurence of me
+	round := 0
 	for m.currentIndex >= 0 {
-		stopIfNeeded(m.currentIndex)
+		round = round + 1
+		stopIfNeeded(round)
 		m.OnProgressUpdate(m.currentIndex, seqLen+1)
 		time.Sleep(viper.GetDuration("slowdown"))
 		dAPI.DLog("starting round at index [" + fmt.Sprintf("%d", m.currentIndex) + "] with nextIndex=" + fmt.Sprintf("%d", nextIndex))
 
 		// Set of promises we are waiting for
-		var pendingSet []uint32
-		pendingSet, err = common.GetPendingSet(m.sequence, myID, m.currentIndex)
+		var pendingSet []common.SequenceCoordinate
+		pendingSet, err = common.GetPendingSet(m.sequence, m.myID, m.currentIndex)
 		if err != nil {
 			return err
 		}
 
 		// Set of the promises we must send
-		var sendSet []uint32
-		sendSet, err = common.GetSendSet(m.sequence, myID, m.currentIndex)
+		var sendSet []common.SequenceCoordinate
+		sendSet, err = common.GetSendSet(m.sequence, m.myID, m.currentIndex)
 		if err != nil {
 			return err
 		}
 
 		// Exchange messages
-		m.promiseRound(pendingSet, sendSet, myID)
+		var stop bool
+		stop, err = m.promiseRound(pendingSet, sendSet)
+		if err != nil || stop {
+			dAPI.DLog("stopping protocol execution")
+			return err
+		}
 
 		m.currentIndex = nextIndex
-		nextIndex, err = common.FindNextIndex(m.sequence, myID, m.currentIndex)
+		nextIndex, err = common.FindNextIndex(m.sequence, m.myID, m.currentIndex)
 		if err != nil {
 			return err
 		}
@@ -83,7 +97,7 @@ func (m *SignatureManager) Sign() error {
 
 	dAPI.DLog("exiting signature round")
 	m.OnProgressUpdate(seqLen+1, seqLen+1)
-	return nil
+	return m.PersistSignaturesToFile()
 }
 
 // GetClient retrieves the Client to the specified sequence id provided it exists
@@ -103,45 +117,59 @@ func (m *SignatureManager) makeSignersHashToIDMap() {
 }
 
 // promiseRound describes a promise round: reception and sending
-func (m *SignatureManager) promiseRound(pendingSet, sendSet []uint32, myID uint32) {
-
+// returns true if the client has to stop the protocol, false otherwise.
+// returns an error if any occured.
+func (m *SignatureManager) promiseRound(pendingSet, sendSet []common.SequenceCoordinate) (bool, error) {
 	// Reception of the due promises
+	var promises []*cAPI.Promise
 	for len(pendingSet) > 0 {
 		select {
 		case promiseIface := <-m.cServerIface.incomingPromises:
 			promise := (promiseIface).(*cAPI.Promise)
-			senderID, exist := m.hashToID[fmt.Sprintf("%x", promise.Context.SenderKeyHash)]
-			if exist {
+			valid, senderID := m.checkPromise(pendingSet, promise)
+			if valid {
 				var err error
-				pendingSet, err = common.Remove(pendingSet, senderID)
+				pendingSet, err = common.RemoveCoordinate(pendingSet, senderID)
 				if err != nil {
 					continue
 				}
-				m.archives.receivedPromises = append(m.archives.receivedPromises, promise)
+				promises = append(promises, promise)
+			} else {
+				return true, m.resolve()
 			}
 
-		case <-time.After(time.Minute):
-			// TODO contact TTP
-			return
+		case <-time.After(net.DefaultTimeout):
+			return true, m.resolve()
 		}
 	}
 
-	c := make(chan *cAPI.Promise, chanBufferSize)
+	// Now that we received everything, we update the evidence we will give to the ttp
+	m.updateReceivedPromises(promises)
+	m.lastValidIndex = m.currentIndex
+
+	c := make(chan error, chanBufferSize)
 	// Sending of due promises
-	for _, id := range sendSet {
-		go func(id uint32, m *SignatureManager) {
-			promise, err := m.CreatePromise(myID, id)
+	for _, coord := range sendSet {
+		go func(coord common.SequenceCoordinate, m *SignatureManager) {
+			promise, err := m.CreatePromise(m.myID, coord.Signer, uint32(m.currentIndex))
 			if err == nil {
-				_ = m.SendEvidence(promise, nil, id)
+				err = m.SendEvidence(promise, nil, coord.Signer)
 			}
-			c <- promise
-		}(id, m)
+			c <- err
+		}(coord, m)
 	}
 
 	// Verifying we sent all the due promises
 	for range sendSet {
-		<-c
+		v := <-c
+		if v != nil {
+			// We couldn't send a due promise
+			dAPI.DLog("Couldn't send promise: " + v.Error())
+			return true, m.resolve()
+		}
 	}
+
+	return false, nil
 }
 
 // closeConnections tries to close all established connection with other peers and platform.
@@ -155,13 +183,123 @@ func (m *SignatureManager) closeConnections() {
 	m.cServer.Stop()
 }
 
+// updateReceivedPromises : updates the RecievedPromises field of the SignatureManager with the provided promises:
+// if we don't yet have a promise from this signer, we add it to the array.
+// otherwise we replace the one we have by the provided promise.
+func (m *SignatureManager