[p] Handle case in mails

dfssc/user/register.go

@@ -5,13 +5,11 @@ import (
 	"regexp"
 	"time"
 
-	"github.com/spf13/viper"
-
 	"dfss/dfssc/common"
 	"dfss/dfssc/security"
 	pb "dfss/dfssp/api"
 	"dfss/net"
-
+	"github.com/spf13/viper"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 )
@@ -27,6 +25,8 @@ type RegisterManager struct {
 	bits         int
 }
 
+var mailRegex = regexp.MustCompile(`.+@.+\..+`)
+
 // NewRegisterManager return a new Register Manager to register a user
 func NewRegisterManager(passphrase, country, organization, unit, mail string, bits int, v *viper.Viper) (*RegisterManager, error) {
 	m := &RegisterManager{v, passphrase, country, organization, unit, mail, bits}
@@ -44,8 +44,7 @@ func NewRegisterManager(passphrase, country, organization, unit, mail string, bi
 
 // Check the validity of the provided email, passphrase and bits
 func (m *RegisterManager) checkValidParams() error {
-	re, _ := regexp.Compile(`.+@.+\..+`)
-	if b := re.MatchString(m.mail); !b {
+	if b := mailRegex.MatchString(m.mail); !b {
 		return errors.New("Provided mail is not valid")
 	}
 

dfssp/contract/contract_test.go

@@ -2,6 +2,7 @@ package contract_test // Using another package to avoid import cycles
 
 import (
 	"fmt"
+	"log"
 	"os"
 	"path/filepath"
 	"testing"
@@ -49,7 +50,7 @@ func TestMain(m *testing.M) {
 	viper.Set("verbose", true)
 
 	srv := server.GetServer()
-	go func() { _ = net.Listen("localhost:9090", srv) }()
+	go func() { log.Fatal(net.Listen("localhost:9090", srv)) }()
 
 	// Run
 	code := m.Run()
@@ -142,7 +143,7 @@ func TestGetWaitingForUser(t *testing.T) {
 	c1.Ready = false
 
 	c2 := entities.NewContract()
-	c2.AddSigner(nil, "mail1", []byte{})
+	c2.AddSigner(nil, "mAil1", []byte{})
 	c2.AddSigner(&knownID, "mail2", []byte{0x12})
 	c2.Ready = false
 

dfssp/contract/create.go

@@ -4,6 +4,7 @@ package contract
 import (
 	"crypto/sha512"
 	"log"
+	"strings"
 	"time"
 
 	"dfss/dfssp/api"
@@ -62,7 +63,6 @@ func (c *Builder) Execute() *api.ErrorCode {
 
 // checkInput checks that a PostContractRequest is well-formed
 func (c *Builder) checkInput() *api.ErrorCode {
-
 	if len(c.in.Signer) == 0 {
 		return &api.ErrorCode{Code: api.ErrorCode_INVARG, Message: "Expecting at least one signer"}
 	}
@@ -76,18 +76,23 @@ func (c *Builder) checkInput() *api.ErrorCode {
 	}
 
 	return nil
-
 }
 
 // fetchSigners fetches authenticated users for this contract from the DB
 func (c *Builder) fetchSigners() error {
 	var users []entities.User
 
+	// Convert emails to case-tolerant emails
+	var conditions []bson.RegEx
+	for _, s := range c.in.Signer {
+		conditions = append(conditions, bson.RegEx{Pattern: "^" + s + "$", Options: "i"})
+	}
+
 	// Fetch users where email is part of the signers slice in request
 	// and authentication is valid
 	err := c.m.Get("users").FindAll(bson.M{
 		"expiration": bson.M{"$gt": time.Now()},
-		"email":      bson.M{"$in": c.in.Signer},
+		"email":      bson.M{"$in": conditions},
 	}, &users)
 	if err != nil {
 		return err
@@ -96,8 +101,9 @@ func (c *Builder) fetchSigners() error {
 	// Locate missing users
 	for _, s := range c.in.Signer {
 		found := false
+		lowerEmail := strings.ToLower(s)
 		for _, u := range users {
-			if s == u.Email {
+			if lowerEmail == strings.ToLower(u.Email) {
 				found = true
 				break
 			}

dfssp/contract/create_test.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
@@ -88,7 +89,7 @@ func TestAddContract(t *testing.T) {
 	errorCode, err := client.PostContract(context.Background(), &api.PostContractRequest{
 		Hash:     defaultHash[:],
 		Filename: "ContractFilename",
-		Signer:   []string{user1.Email, user2.Email},
+		Signer:   []string{strings.ToUpper(user1.Email), user2.Email},
 		Comment:  "ContractComment",
 	})
 	assert.Equal(t, nil, err)

dfssp/entities/contract.go

@@ -89,7 +89,7 @@ func (r *ContractRepository) GetWaitingForUser(email string) ([]Contract, error)
 		"ready": false,
 		"signers": bson.M{
 			"$elemMatch": bson.M{
-				"email": email,
+				"email": bson.M{"$regex": bson.RegEx{Pattern: "^" + email + "$", Options: "i"}},
 				"hash":  []byte{},
 			}},
 	}, &res)

dfssp/user/auth.go

+package user
+
+import (
+	"crypto/rsa"
+	"crypto/x509"
+	"errors"
+	"log"
+	"strings"
+	"time"
+
+	"dfss/auth"
+	"dfss/dfssp/api"
+	"dfss/dfssp/authority"
+	"dfss/dfssp/contract"
+	"dfss/dfssp/entities"
+	"dfss/mgdb"
+	"github.com/spf13/viper"
+	"gopkg.in/mgo.v2/bson"
+)
+
+// Check if the authentication request was made in time
+func checkTokenTimeout(user *entities.User) error {
+	now := time.Now().UTC()
+	bad := now.After(user.Registration.Add(maxRegistrationDelay))
+	if bad {
+		return errors.New("Registration request is too old, please register again")
+	}
+
+	return nil
+}
+
+// Gerenate the user's certificate and certificate hash according to the specified parameters
+//
+// This function should only be called AFTER checking the AuthRequest for validity
+func generateUserCert(csr string, parent *x509.Certificate, key *rsa.PrivateKey) ([]byte, []byte, error) {
+	x509csr, err := auth.PEMToCertificateRequest([]byte(csr))
+	if err != nil {
+		return nil, nil, err
+	}
+
+	cert, err := auth.GetCertificate(viper.GetInt("validity"), auth.GenerateUID(), x509csr, parent, key)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c, _ := auth.PEMToCertificate(cert)
+	certHash := auth.GetCertificateHash(c)
+
+	return cert, certHash, nil
+}
+
+// Auth checks if the authentication request is valid, and if so,
+// generate the certificate and certificate hash for the user, and
+// updates the user's entry in the database
+//
+// If there is already an entry in the database with the same email,
+// and that this entry already has a certificate and certificate hash,
+// evaluates the request as invalid
+//
+// The user's ConnectionInfo field is NOT handled here
+// This data should be gathered upon beginning the signing sequence
+func Auth(pid *authority.PlatformID, manager *mgdb.MongoManager, in *api.AuthRequest) (*api.RegisteredUser, error) {
+	// Check the request validity
+	err := checkAuthRequest(in)
+	if err != nil {
+		return nil, err
+	}
+
+	// Find the user in the database (last created)
+	var user entities.User
+	err = manager.Get("users").Collection.Find(bson.M{
+		"email": bson.M{"$eq": in.Email},
+	}).Sort("-registration").One(&user)
+	if err != nil {
+		return nil, err
+	}
+
+	// If the user already has a certificate and certificate hash in the database, does nothing
+	if user.Certificate != "" || len(user.CertHash) != 0 {
+		return nil, errors.New("User is already registered")
+	}
+
+	// Check if the delta between now and the moment the user was created (ie the moment he sent the register request) is in bound
+	err = checkTokenTimeout(&user)
+	if err != nil {
+		return nil, err
+	}
+
+	// Check if the token is correct
+	if in.Token != user.RegToken {
+		return nil, errors.New("Token mismatch")
+	}
+
+	// Generate the certificates and hash
+	cert, certHash, err := generateUserCert(user.Csr, pid.RootCA, pid.Pkey)
+	if err != nil {
+		return nil, err
+	}
+
+	user.Certificate = string(cert)
+	user.CertHash = certHash
+	user.Expiration = time.Now().AddDate(0, 0, viper.GetInt("validity"))
+
+	// Updating the database
+	ok, err := manager.Get("users").UpdateByID(user)
+	if !ok {
+		return nil, err
+	}
+
+	// Update missed contracts in background
+	go launchMissedContracts(manager, &user)
+
+	// Returning the RegisteredUser message
+	return &api.RegisteredUser{ClientCert: user.Certificate}, nil
+}
+
+func launchMissedContracts(manager *mgdb.MongoManager, user *entities.User) {
+
+	repository := entities.NewContractRepository(manager.Get("contracts"))
+	contracts, err := repository.GetWaitingForUser(user.Email)
+	if err != nil {
+		log.Println("Cannot get missed contracts for user", user.Email+":", err)
+	}
+
+	lowerEmail := strings.ToLower(user.Email)
+	for _, c := range contracts {
+
+		c.Ready = true
+		for i := range c.Signers {
+			if strings.ToLower(c.Signers[i].Email) == lowerEmail {
+				c.Signers[i].Hash = user.CertHash
+				c.Signers[i].UserID = user.ID
+			}
+			if len(c.Signers[i].Hash) == 0 {
+				c.Ready = false
+			}
+		}
+
+		// Update contract in database
+		_, err = repository.Collection.UpdateByID(c)
+		if err != nil {
+			log.Println("Cannot update missed contract", c.ID, "for user", user.Email+":", err)
+		}
+
+		if c.Ready {
+			// Send required mails
+			builder := contract.NewContractBuilder(manager, nil)
+			builder.Contract = &c
+			builder.SendNewContractMail()
+		}
+	}
+
+}

dfssp/user/auth_test.go

+package user_test
+
+import (
+	"dfss/dfssp/api"
+	"testing"
+	"time"
+
+	"dfss/dfssp/entities"
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/net/context"
+)
+
+func TestAuthUserNotFound(t *testing.T) {
+	mail := "wrong@wrong.wrong"
+	token := "wrong"
+	client := clientTest(t, ValidServ)
+
+	request := &api.AuthRequest{Email: mail, Token: token}
+	msg, err := client.Auth(context.Background(), request)
+	assert.Equal(t, (*api.RegisteredUser)(nil), msg)
+	if err == nil {
+		t.Fatal("The request user should not have been found in the database")
+	}
+}
+
+func TestAuthTwice(t *testing.T) {
+	email := "email"
+	token := "token"
+	user := entities.NewUser()
+	user.Email = email
+	user.RegToken = token
+	user.Csr = string(csr)
+	user.Certificate = "foo"
+	user.CertHash = []byte{0xaa}
+
+	_, err = repository.Collection.Insert(*user)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// User is already registered
+	client := clientTest(t, ValidServ)
+	request := &api.AuthRequest{Email: email, Token: token}
+	msg, err := client.Auth(context.Background(), request)
+	assert.Equal(t, msg, (*api.RegisteredUser)(nil))
+	if err == nil {
+		t.Fatal("The user should have been evaluated as already registered")
+	}
+}
+
+func TestWrongAuthRequestContext(t *testing.T) {
+	mail := "right@right.right"
+	token := "right"
+
+	user := entities.NewUser()
+	user.Email = mail
+	user.RegToken = token
+	user.Registration = time.Now().UTC().Add(time.Hour * -48)
+
+	_, err := repository.Collection.Insert(*user)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	client := clientTest(t, ValidServ)
+
+	request := &api.AuthRequest{Email: mail, Token: "foo"}
+
+	// Token timeout
+	msg, err := client.Auth(context.Background(), request)
+	assert.Equal(t, (*api.RegisteredUser)(nil), msg)
+	if err == nil {
+		t.Fatal("The request should have been evaluated as invalid")
+	}
+
+	// Token mismatch
+	user.Registration = time.Now().UTC()
+
+	_, err = repository.Collection.UpdateByID(*user)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	msg, err = client.Auth(context.Background(), request)
+	assert.Equal(t, (*api.RegisteredUser)(nil), msg)
+	if err == nil {
+		t.Fatal("The request should have been evaluated as invalid")
+	}
+
+	res := entities.User{}
+	err = repository.Collection.FindByID(*user, &res)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Equal(t, res.Certificate, "")
+	assert.Equal(t, res.CertHash, []byte{})
+
+	// Invalid certificate request (none here)
+	request.Token = token
+	msg, err = client.Auth(context.Background(), request)
+	assert.Equal(t, (*api.RegisteredUser)(nil), msg)
+	if err == nil {
+		t.Fatal("The request should have been evaluated as invalid")
+	}
+
+	err = repository.Collection.FindByID(*user, &res)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, res.Certificate, "")
+	assert.Equal(t, res.CertHash, []byte{})
+}

dfssp/user/create.go

@@ -3,17 +3,14 @@ package user
 
 import (
 	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
 	"errors"
 	"fmt"
 	"log"
+	"regexp"
 	"time"
 
 	"dfss/auth"
 	"dfss/dfssp/api"
-	"dfss/dfssp/authority"
-	"dfss/dfssp/contract"
 	"dfss/dfssp/entities"
 	"dfss/dfssp/templates"
 	"dfss/mgdb"
@@ -21,12 +18,21 @@ import (
 	"gopkg.in/mgo.v2/bson"
 )
 
+var (
+	mailRegex            = regexp.MustCompile(`.+@.+\..+`)
+	maxRegistrationDelay = 24 * time.Hour
+)
+
 // Check if the registration request has usable fields
 func checkRegisterRequest(in *api.RegisterRequest) *api.ErrorCode {
 	if len(in.Email) == 0 {
 		return &api.ErrorCode{Code: api.ErrorCode_INVARG, Message: "Invalid email length"}
 	}
 
+	if b := mailRegex.MatchString(in.Email); !b {
+		return &api.ErrorCode{Code: api.ErrorCode_INVARG, Message: "Invalid mail"}
+	}
+
 	if len(in.Request) == 0 {
 		return &api.ErrorCode{Code: api.ErrorCode_INVARG, Message: "Invalid request length"}
 	}
@@ -97,10 +103,14 @@ func Register(manager *mgdb.MongoManager, in *api.RegisterRequest) (*api.ErrorCo
 	}
 	token := fmt.Sprintf("%x", b)
 
-	// If there is already an entry with the same mail, do nothing
+	// If there is already an entry with the same mail (case-insensitive), do nothing.
 	var res []entities.User
 	err = manager.Get("users").FindAll(bson.M{
-		"email": bson.M{"$eq": in.Email},
+		"$or": []bson.M{
+			bson.M{"expiration": bson.M{"$gt": time.Now()}},                                  // authentified
+			bson.M{"registration": bson.M{"$gt": time.Now().Add(-1 * maxRegistrationDelay)}}, // authentifying
+		},
+		"email": bson.M{"$regex": bson.RegEx{Pattern: "^" + in.Email + "$", Options: "i"}},
 	}, &res)
 	if len(res) != 0 {
 		return &api.ErrorCode{Code: api.ErrorCode_INVARG, Message: "An entry already exists with the same mail"}, nil
@@ -140,137 +150,3 @@ func checkAuthRequest(in *api.AuthRequest) error {
 
 	return nil
 }
-
-// Check if the authentication request was made in time
-func checkTokenTimeout(user *entities.User) error {
-	now := time.Now().UTC()
-	bad := now.After(user.Registration.Add(time.Hour * 24))
-	if bad {
-		return errors.New("Registration request is over 24 hours old")
-	}
-
-	return nil
-}
-
-// Gerenate the user's certificate and certificate hash according to the specified parameters
-//
-// This function should only be called AFTER checking the AuthRequest for validity
-func generateUserCert(csr string, parent *x509.Certificate, key *rsa.PrivateKey) ([]byte, []byte, error) {
-	x509csr, err := auth.PEMToCertificateRequest([]byte(csr))
-	if err != nil {
-		return nil, nil, err
-	}
-
-	cert, err := auth.GetCertificate(viper.GetInt("validity"), auth.GenerateUID(), x509csr, parent, key)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	c, _ := auth.PEMToCertificate(cert)
-	certHash := auth.GetCertificateHash(c)
-
-	return cert, certHash, nil
-}
-
-// Auth checks if the authentication request is valid, and if so,
-// generate the certificate and certificate hash for the user, and
-// updates the user's entry in the database
-//
-// If there is already an entry in the database with the same email,
-// and that this entry already has a certificate and certificate hash,
-// evaluates the request as invalid
-//
-// The user's ConnectionInfo field is NOT handled here
-// This data should be gathered upon beginning the signing sequence
-func Auth(pid *authority.PlatformID, manager *mgdb.MongoManager, in *api.AuthRequest) (*api.RegisteredUser, error) {
-	// Check the request validity
-	err := checkAuthRequest(in)
-	if err != nil {
-		return nil, err
-	}
-
-	// Find the user in the database
-	var user entities.User
-
-	err = manager.Get("users").Collection.Find(bson.M{
-		"email": bson.M{"$eq": in.Email},
-	}).One(&user)
-	if err != nil {
-		return nil, err
-	}
-
-	// If the user already has a certificate and certificate hash in the database, does nothing
-	if user.Certificate != "" || len(user.CertHash) != 0 {
-		return nil, errors.New("User is already registered")
-	}
-
-	// Check if the delta between now and the moment the user was created (ie the moment he sent the register request) is in bound of 24h
-	err = checkTokenTimeout(&user)
-	if err != nil {
-		return nil, err
-	}
-
-	// Check if the token is correct
-	if in.Token != user.RegToken {
-		return nil, errors.New("Token mismatch")
-	}
-
-	// Generate the certificates and hash
-	cert, certHash, err := generateUserCert(user.Csr, pid.RootCA, pid.Pkey)
-	if err != nil {
-		return nil, err
-	}
-
-	user.Certificate = string(cert)
-	user.CertHash = certHash
-	user.Expiration = time.Now().AddDate(0, 0, viper.GetInt("validity"))
-
-	// Updating the database
-	ok, err := manager.Get("users").UpdateByID(user)
-	if !ok {
-		return nil, err
-	}
-
-	// Update missed contracts in background
-	go launchMissedContracts(manager, &user)
-
-	// Returning the RegisteredUser message
-	return &api.RegisteredUser{ClientCert: user.Certificate}, nil
-}
-
-func launchMissedContracts(manager *mgdb.MongoManager, user *entities.User) {
-
-	repository := entities.NewContractRepository(manager.Get("contracts"))
-	contracts, err := repository.GetWaitingForUser(user.Email)
-	if err != nil {
-		log.Println("Cannot get missed contracts for user", user.Email+":", err)
-	}
-
-	for _, c := range contracts {
-
-		c.Ready = true
-		for i := range c.Signers {
-			if c.Signers[i].Email == user.Email {
-				c.Signers[i].Hash = user.CertHash
-				c.Signers[i].UserID = user.ID
-			}
-			if len(c.Signers[i].Hash) == 0 {
-				c.Ready = false
-			}
-		}
-
-		// Update contract in database
-		_, err = repository.Collection.UpdateByID(c)
-		if err != nil {
-			log.Println("Cannot update missed contract", c.ID, "for user", user.Email+":", err)
-		}
-
-		if c.Ready {
-			// Send required mails
-			builder := contract.NewContractBuilder(manager, nil)
-			builder.Contract = &c
-			builder.SendNewContractMail()
-		}
-	}
-
-}

dfssp/user/create_test.go

@@ -2,26 +2,24 @@ package user_test
 
 import (
 	"dfss/dfssp/api"
-	"dfss/net"
+	"testing"
+	"time"
+
+	"dfss/dfssp/entities"
 	"github.com/stretchr/testify/assert"
 	"golang.org/x/net/context"
-	"testing"
 )
 
-const (
-	// ValidServ is a host/port adress to a platform server with bad setup