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Merge pull request '[v7.0/forgejo] Highlight signed tags like signed commits' (#2950) from bp-v7.0/forgejo-bc08007-432ff7d-cd19564 into v7.0/forgejo

Browse source 
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/2950
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
This commit is contained in:
Earl Warren 2024-04-01 14:29:24 +00:00
commit c01935e9d0
13 changed files with 861 additions and 503 deletions
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492
models/asymkey/gpg_key_commit_verification.go
View file

@ -5,18 +5,10 @@ package asymkey
import ( import (
"context" "context"
"fmt"
"hash"
"strings"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo" repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user" user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git" "code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/keybase/go-crypto/openpgp/packet"
) )
// __________________ ________ ____ __. // __________________ ________ ____ __.
@ -40,45 +32,22 @@ import (
// This file provides functions relating commit verification // This file provides functions relating commit verification
// CommitVerification represents a commit validation of signature
type CommitVerification struct {
Verified bool
Warning bool
Reason string
SigningUser *user_model.User
CommittingUser *user_model.User
SigningEmail string
SigningKey *GPGKey
SigningSSHKey *PublicKey
TrustStatus string
}
// SignCommit represents a commit with validation of signature. // SignCommit represents a commit with validation of signature.
type SignCommit struct { type SignCommit struct {
Verification *CommitVerification Verification *ObjectVerification
*user_model.UserCommit *user_model.UserCommit
} }
const (
// BadSignature is used as the reason when the signature has a KeyID that is in the db
// but no key that has that ID verifies the signature. This is a suspicious failure.
BadSignature = "gpg.error.probable_bad_signature"
// BadDefaultSignature is used as the reason when the signature has a KeyID that matches the
// default Key but is not verified by the default key. This is a suspicious failure.
BadDefaultSignature = "gpg.error.probable_bad_default_signature"
// NoKeyFound is used as the reason when no key can be found to verify the signature.
NoKeyFound = "gpg.error.no_gpg_keys_found"
)
// ParseCommitsWithSignature checks if signaute of commits are corresponding to users gpg keys. // ParseCommitsWithSignature checks if signaute of commits are corresponding to users gpg keys.
func ParseCommitsWithSignature(ctx context.Context, oldCommits []*user_model.UserCommit, repoTrustModel repo_model.TrustModelType, isOwnerMemberCollaborator func(*user_model.User) (bool, error)) []*SignCommit { func ParseCommitsWithSignature(ctx context.Context, oldCommits []*user_model.UserCommit, repoTrustModel repo_model.TrustModelType, isOwnerMemberCollaborator func(*user_model.User) (bool, error)) []*SignCommit {
newCommits := make([]*SignCommit, 0, len(oldCommits)) newCommits := make([]*SignCommit, 0, len(oldCommits))
keyMap := map[string]bool{} keyMap := map[string]bool{}
for _, c := range oldCommits { for _, c := range oldCommits {
o := commitToGitObject(c.Commit)
signCommit := &SignCommit{ signCommit := &SignCommit{
UserCommit: c, UserCommit: c,
Verification: ParseCommitWithSignature(ctx, c.Commit), Verification: ParseObjectWithSignature(ctx, &o),
} }
_ = CalculateTrustStatus(signCommit.Verification, repoTrustModel, isOwnerMemberCollaborator, &keyMap) _ = CalculateTrustStatus(signCommit.Verification, repoTrustModel, isOwnerMemberCollaborator, &keyMap)
@ -88,456 +57,7 @@ func ParseCommitsWithSignature(ctx context.Context, oldCommits []*user_model.Use
return newCommits return newCommits
} }
// ParseCommitWithSignature check if signature is good against keystore. func ParseCommitWithSignature(ctx context.Context, c *git.Commit) *ObjectVerification {
func ParseCommitWithSignature(ctx context.Context, c *git.Commit) *CommitVerification { o := commitToGitObject(c)
var committer *user_model.User return ParseObjectWithSignature(ctx, &o)
if c.Committer != nil {
var err error
// Find Committer account
committer, err = user_model.GetUserByEmail(ctx, c.Committer.Email) // This finds the user by primary email or activated email so commit will not be valid if email is not
if err != nil { // Skipping not user for committer
committer = &user_model.User{
Name: c.Committer.Name,
Email: c.Committer.Email,
}
// We can expect this to often be an ErrUserNotExist. in the case
// it is not, however, it is important to log it.
if !user_model.IsErrUserNotExist(err) {
log.Error("GetUserByEmail: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.no_committer_account",
}
}
}
}
// If no signature just report the committer
if c.Signature == nil {
return &CommitVerification{
CommittingUser: committer,
Verified: false, // Default value
Reason: "gpg.error.not_signed_commit", // Default value
}
}
// If this a SSH signature handle it differently
if strings.HasPrefix(c.Signature.Signature, "-----BEGIN SSH SIGNATURE-----") {
return ParseCommitWithSSHSignature(ctx, c, committer)
}
// Parsing signature
sig, err := extractSignature(c.Signature.Signature)
if err != nil { // Skipping failed to extract sign
log.Error("SignatureRead err: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.extract_sign",
}
}
keyID := ""
if sig.IssuerKeyId != nil && (*sig.IssuerKeyId) != 0 {
keyID = fmt.Sprintf("%X", *sig.IssuerKeyId)
}
if keyID == "" && sig.IssuerFingerprint != nil && len(sig.IssuerFingerprint) > 0 {
keyID = fmt.Sprintf("%X", sig.IssuerFingerprint[12:20])
}
defaultReason := NoKeyFound
// First check if the sig has a keyID and if so just look at that
if commitVerification := hashAndVerifyForKeyID(
ctx,
sig,
c.Signature.Payload,
committer,
keyID,
setting.AppName,
""); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
// Now try to associate the signature with the committer, if present
if committer.ID != 0 {
keys, err := db.Find[GPGKey](ctx, FindGPGKeyOptions{
OwnerID: committer.ID,
})
if err != nil { // Skipping failed to get gpg keys of user
log.Error("ListGPGKeys: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
if err := GPGKeyList(keys).LoadSubKeys(ctx); err != nil {
log.Error("LoadSubKeys: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
committerEmailAddresses, _ := user_model.GetEmailAddresses(ctx, committer.ID)
activated := false
for _, e := range committerEmailAddresses {
if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {
activated = true
break
}
}
for _, k := range keys {
// Pre-check (& optimization) that emails attached to key can be attached to the committer email and can validate
canValidate := false
email := ""
if k.Verified && activated {
canValidate = true
email = c.Committer.Email
}
if !canValidate {
for _, e := range k.Emails {
if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {
canValidate = true
email = e.Email
break
}
}
}
if !canValidate {
continue // Skip this key
}
commitVerification := hashAndVerifyWithSubKeysCommitVerification(sig, c.Signature.Payload, k, committer, committer, email)
if commitVerification != nil {
return commitVerification
}
}
}
if setting.Repository.Signing.SigningKey != "" && setting.Repository.Signing.SigningKey != "default" && setting.Repository.Signing.SigningKey != "none" {
// OK we should try the default key
gpgSettings := git.GPGSettings{
Sign: true,
KeyID: setting.Repository.Signing.SigningKey,
Name: setting.Repository.Signing.SigningName,
Email: setting.Repository.Signing.SigningEmail,
}
if err := gpgSettings.LoadPublicKeyContent(); err != nil {
log.Error("Error getting default signing key: %s %v", gpgSettings.KeyID, err)
} else if commitVerification := verifyWithGPGSettings(ctx, &gpgSettings, sig, c.Signature.Payload, committer, keyID); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
}
defaultGPGSettings, err := c.GetRepositoryDefaultPublicGPGKey(false)
if err != nil {
log.Error("Error getting default public gpg key: %v", err)
} else if defaultGPGSettings == nil {
log.Warn("Unable to get defaultGPGSettings for unattached commit: %s", c.ID.String())
} else if defaultGPGSettings.Sign {
if commitVerification := verifyWithGPGSettings(ctx, defaultGPGSettings, sig, c.Signature.Payload, committer, keyID); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
}
return &CommitVerification{ // Default at this stage
CommittingUser: committer,
Verified: false,
Warning: defaultReason != NoKeyFound,
Reason: defaultReason,
SigningKey: &GPGKey{
KeyID: keyID,
},
}
}
func verifyWithGPGSettings(ctx context.Context, gpgSettings *git.GPGSettings, sig *packet.Signature, payload string, committer *user_model.User, keyID string) *CommitVerification {
// First try to find the key in the db
if commitVerification := hashAndVerifyForKeyID(ctx, sig, payload, committer, gpgSettings.KeyID, gpgSettings.Name, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
// Otherwise we have to parse the key
ekeys, err := checkArmoredGPGKeyString(gpgSettings.PublicKeyContent)
if err != nil {
log.Error("Unable to get default signing key: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
for _, ekey := range ekeys {
pubkey := ekey.PrimaryKey
content, err := base64EncPubKey(pubkey)
if err != nil {
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k := &GPGKey{
Content: content,
CanSign: pubkey.CanSign(),
KeyID: pubkey.KeyIdString(),
}
for _, subKey := range ekey.Subkeys {
content, err := base64EncPubKey(subKey.PublicKey)
if err != nil {
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k.SubsKey = append(k.SubsKey, &GPGKey{
Content: content,
CanSign: subKey.PublicKey.CanSign(),
KeyID: subKey.PublicKey.KeyIdString(),
})
}
if commitVerification := hashAndVerifyWithSubKeysCommitVerification(sig, payload, k, committer, &user_model.User{
Name: gpgSettings.Name,
Email: gpgSettings.Email,
}, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
if keyID == k.KeyID {
// This is a bad situation ... We have a key id that matches our default key but the signature doesn't match.
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
}
}
}
return nil
}
func verifySign(s *packet.Signature, h hash.Hash, k *GPGKey) error {
// Check if key can sign
if !k.CanSign {
return fmt.Errorf("key can not sign")
}
// Decode key
pkey, err := base64DecPubKey(k.Content)
if err != nil {
return err
}
return pkey.VerifySignature(h, s)
}
func hashAndVerify(sig *packet.Signature, payload string, k *GPGKey) (*GPGKey, error) {
// Generating hash of commit
hash, err := populateHash(sig.Hash, []byte(payload))
if err != nil { // Skipping as failed to generate hash
log.Error("PopulateHash: %v", err)
return nil, err
}
// We will ignore errors in verification as they don't need to be propagated up
err = verifySign(sig, hash, k)
if err != nil {
return nil, nil
}
return k, nil
}
func hashAndVerifyWithSubKeys(sig *packet.Signature, payload string, k *GPGKey) (*GPGKey, error) {
verified, err := hashAndVerify(sig, payload, k)
if err != nil || verified != nil {
return verified, err
}
for _, sk := range k.SubsKey {
verified, err := hashAndVerify(sig, payload, sk)
if err != nil || verified != nil {
return verified, err
}
}
return nil, nil
}
func hashAndVerifyWithSubKeysCommitVerification(sig *packet.Signature, payload string, k *GPGKey, committer, signer *user_model.User, email string) *CommitVerification {
key, err := hashAndVerifyWithSubKeys(sig, payload, k)
if err != nil { // Skipping failed to generate hash
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
if key != nil {
return &CommitVerification{ // Everything is ok
CommittingUser: committer,
Verified: true,
Reason: fmt.Sprintf("%s / %s", signer.Name, key.KeyID),
SigningUser: signer,
SigningKey: key,
SigningEmail: email,
}
}
return nil
}
func hashAndVerifyForKeyID(ctx context.Context, sig *packet.Signature, payload string, committer *user_model.User, keyID, name, email string) *CommitVerification {
if keyID == "" {
return nil
}
keys, err := db.Find[GPGKey](ctx, FindGPGKeyOptions{
KeyID: keyID,
IncludeSubKeys: true,
})
if err != nil {
log.Error("GetGPGKeysByKeyID: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
if len(keys) == 0 {
return nil
}
for _, key := range keys {
var primaryKeys []*GPGKey
if key.PrimaryKeyID != "" {
primaryKeys, err = db.Find[GPGKey](ctx, FindGPGKeyOptions{
KeyID: key.PrimaryKeyID,
IncludeSubKeys: true,
})
if err != nil {
log.Error("GetGPGKeysByKeyID: %v", err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
}
activated, email := checkKeyEmails(ctx, email, append([]*GPGKey{key}, primaryKeys...)...)
if !activated {
continue
}
signer := &user_model.User{
Name: name,
Email: email,
}
if key.OwnerID != 0 {
owner, err := user_model.GetUserByID(ctx, key.OwnerID)
if err == nil {
signer = owner
} else if !user_model.IsErrUserNotExist(err) {
log.Error("Failed to user_model.GetUserByID: %d for key ID: %d (%s) %v", key.OwnerID, key.ID, key.KeyID, err)
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.no_committer_account",
}
}
}
commitVerification := hashAndVerifyWithSubKeysCommitVerification(sig, payload, key, committer, signer, email)
if commitVerification != nil {
return commitVerification
}
}
// This is a bad situation ... We have a key id that is in our database but the signature doesn't match.
return &CommitVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
}
}
// CalculateTrustStatus will calculate the TrustStatus for a commit verification within a repository
// There are several trust models in Gitea
func CalculateTrustStatus(verification *CommitVerification, repoTrustModel repo_model.TrustModelType, isOwnerMemberCollaborator func(*user_model.User) (bool, error), keyMap *map[string]bool) error {
if !verification.Verified {
return nil
}
// In the Committer trust model a signature is trusted if it matches the committer
// - it doesn't matter if they're a collaborator, the owner, Gitea or Github
// NB: This model is commit verification only
if repoTrustModel == repo_model.CommitterTrustModel {
// default to "unmatched"
verification.TrustStatus = "unmatched"
// We can only verify against users in our database but the default key will match
// against by email if it is not in the db.
if (verification.SigningUser.ID != 0 &&
verification.CommittingUser.ID == verification.SigningUser.ID) ||
(verification.SigningUser.ID == 0 && verification.CommittingUser.ID == 0 &&
verification.SigningUser.Email == verification.CommittingUser.Email) {
verification.TrustStatus = "trusted"
}
return nil
}
// Now we drop to the more nuanced trust models...
verification.TrustStatus = "trusted"
if verification.SigningUser.ID == 0 {
// This commit is signed by the default key - but this key is not assigned to a user in the DB.
// However in the repo_model.CollaboratorCommitterTrustModel we cannot mark this as trusted
// unless the default key matches the email of a non-user.
if repoTrustModel == repo_model.CollaboratorCommitterTrustModel && (verification.CommittingUser.ID != 0 ||
verification.SigningUser.Email != verification.CommittingUser.Email) {
verification.TrustStatus = "untrusted"
}
return nil
}
// Check we actually have a GPG SigningKey
var err error
if verification.SigningKey != nil {
var isMember bool
if keyMap != nil {
var has bool
isMember, has = (*keyMap)[verification.SigningKey.KeyID]
if !has {
isMember, err = isOwnerMemberCollaborator(verification.SigningUser)
(*keyMap)[verification.SigningKey.KeyID] = isMember
}
} else {
isMember, err = isOwnerMemberCollaborator(verification.SigningUser)
}
if !isMember {
verification.TrustStatus = "untrusted"
if verification.CommittingUser.ID != verification.SigningUser.ID {
// The committing user and the signing user are not the same
// This should be marked as questionable unless the signing user is a collaborator/team member etc.
verification.TrustStatus = "unmatched"
}
} else if repoTrustModel == repo_model.CollaboratorCommitterTrustModel && verification.CommittingUser.ID != verification.SigningUser.ID {
// The committing user and the signing user are not the same and our trustmodel states that they must match
verification.TrustStatus = "unmatched"
}
}
return err
} }

527
models/asymkey/gpg_key_object_verification.go Normal file
View file

@ -0,0 +1,527 @@
// Copyright 2021 The Gitea Authors. All rights reserved.
// Copyright 2024 The Forgejo Authors c/o Codeberg e.V.. All rights reserved.
// SPDX-License-Identifier: MIT
package asymkey
import (
"context"
"fmt"
"hash"
"strings"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/keybase/go-crypto/openpgp/packet"
)
// This file provides functions related to object (commit, tag) verification
// ObjectVerification represents a commit validation of signature
type ObjectVerification struct {
Verified bool
Warning bool
Reason string
SigningUser *user_model.User
CommittingUser *user_model.User
SigningEmail string
SigningKey *GPGKey
SigningSSHKey *PublicKey
TrustStatus string
}
const (
// BadSignature is used as the reason when the signature has a KeyID that is in the db
// but no key that has that ID verifies the signature. This is a suspicious failure.
BadSignature = "gpg.error.probable_bad_signature"
// BadDefaultSignature is used as the reason when the signature has a KeyID that matches the
// default Key but is not verified by the default key. This is a suspicious failure.
BadDefaultSignature = "gpg.error.probable_bad_default_signature"
// NoKeyFound is used as the reason when no key can be found to verify the signature.
NoKeyFound = "gpg.error.no_gpg_keys_found"
)
type GitObject struct {
ID git.ObjectID
Committer *git.Signature
Signature *git.ObjectSignature
Commit *git.Commit
}
func commitToGitObject(c *git.Commit) GitObject {
return GitObject{
ID: c.ID,
Committer: c.Committer,
Signature: c.Signature,
Commit: c,
}
}
func tagToGitObject(t *git.Tag, gitRepo *git.Repository) GitObject {
commit, _ := t.Commit(gitRepo)
return GitObject{
ID: t.ID,
Committer: t.Tagger,
Signature: t.Signature,
Commit: commit,
}
}
// ParseObjectWithSignature check if signature is good against keystore.
func ParseObjectWithSignature(ctx context.Context, c *GitObject) *ObjectVerification {
var committer *user_model.User
if c.Committer != nil {
var err error
// Find Committer account
committer, err = user_model.GetUserByEmail(ctx, c.Committer.Email) // This finds the user by primary email or activated email so commit will not be valid if email is not
if err != nil { // Skipping not user for committer
committer = &user_model.User{
Name: c.Committer.Name,
Email: c.Committer.Email,
}
// We can expect this to often be an ErrUserNotExist. in the case
// it is not, however, it is important to log it.
if !user_model.IsErrUserNotExist(err) {
log.Error("GetUserByEmail: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.no_committer_account",
}
}
}
}
// If no signature just report the committer
if c.Signature == nil {
return &ObjectVerification{
CommittingUser: committer,
Verified: false, // Default value
Reason: "gpg.error.not_signed_commit", // Default value
}
}
// If this a SSH signature handle it differently
if strings.HasPrefix(c.Signature.Signature, "-----BEGIN SSH SIGNATURE-----") {
return ParseObjectWithSSHSignature(ctx, c, committer)
}
// Parsing signature
sig, err := extractSignature(c.Signature.Signature)
if err != nil { // Skipping failed to extract sign
log.Error("SignatureRead err: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.extract_sign",
}
}
keyID := ""
if sig.IssuerKeyId != nil && (*sig.IssuerKeyId) != 0 {
keyID = fmt.Sprintf("%X", *sig.IssuerKeyId)
}
if keyID == "" && sig.IssuerFingerprint != nil && len(sig.IssuerFingerprint) > 0 {
keyID = fmt.Sprintf("%X", sig.IssuerFingerprint[12:20])
}
defaultReason := NoKeyFound
// First check if the sig has a keyID and if so just look at that
if commitVerification := hashAndVerifyForKeyID(
ctx,
sig,
c.Signature.Payload,
committer,
keyID,
setting.AppName,
""); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
// Now try to associate the signature with the committer, if present
if committer.ID != 0 {
keys, err := db.Find[GPGKey](ctx, FindGPGKeyOptions{
OwnerID: committer.ID,
})
if err != nil { // Skipping failed to get gpg keys of user
log.Error("ListGPGKeys: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
if err := GPGKeyList(keys).LoadSubKeys(ctx); err != nil {
log.Error("LoadSubKeys: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
committerEmailAddresses, _ := user_model.GetEmailAddresses(ctx, committer.ID)
activated := false
for _, e := range committerEmailAddresses {
if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {
activated = true
break
}
}
for _, k := range keys {
// Pre-check (& optimization) that emails attached to key can be attached to the committer email and can validate
canValidate := false
email := ""
if k.Verified && activated {
canValidate = true
email = c.Committer.Email
}
if !canValidate {
for _, e := range k.Emails {
if e.IsActivated && strings.EqualFold(e.Email, c.Committer.Email) {
canValidate = true
email = e.Email
break
}
}
}
if !canValidate {
continue // Skip this key
}
commitVerification := hashAndVerifyWithSubKeysObjectVerification(sig, c.Signature.Payload, k, committer, committer, email)
if commitVerification != nil {
return commitVerification
}
}
}
if setting.Repository.Signing.SigningKey != "" && setting.Repository.Signing.SigningKey != "default" && setting.Repository.Signing.SigningKey != "none" {
// OK we should try the default key
gpgSettings := git.GPGSettings{
Sign: true,
KeyID: setting.Repository.Signing.SigningKey,
Name: setting.Repository.Signing.SigningName,
Email: setting.Repository.Signing.SigningEmail,
}
if err := gpgSettings.LoadPublicKeyContent(); err != nil {
log.Error("Error getting default signing key: %s %v", gpgSettings.KeyID, err)
} else if commitVerification := verifyWithGPGSettings(ctx, &gpgSettings, sig, c.Signature.Payload, committer, keyID); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
}
defaultGPGSettings, err := c.Commit.GetRepositoryDefaultPublicGPGKey(false)
if err != nil {
log.Error("Error getting default public gpg key: %v", err)
} else if defaultGPGSettings == nil {
log.Warn("Unable to get defaultGPGSettings for unattached commit: %s", c.Commit.ID.String())
} else if defaultGPGSettings.Sign {
if commitVerification := verifyWithGPGSettings(ctx, defaultGPGSettings, sig, c.Signature.Payload, committer, keyID); commitVerification != nil {
if commitVerification.Reason == BadSignature {
defaultReason = BadSignature
} else {
return commitVerification
}
}
}
return &ObjectVerification{ // Default at this stage
CommittingUser: committer,
Verified: false,
Warning: defaultReason != NoKeyFound,
Reason: defaultReason,
SigningKey: &GPGKey{
KeyID: keyID,
},
}
}
func verifyWithGPGSettings(ctx context.Context, gpgSettings *git.GPGSettings, sig *packet.Signature, payload string, committer *user_model.User, keyID string) *ObjectVerification {
// First try to find the key in the db
if commitVerification := hashAndVerifyForKeyID(ctx, sig, payload, committer, gpgSettings.KeyID, gpgSettings.Name, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
// Otherwise we have to parse the key
ekeys, err := checkArmoredGPGKeyString(gpgSettings.PublicKeyContent)
if err != nil {
log.Error("Unable to get default signing key: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
for _, ekey := range ekeys {
pubkey := ekey.PrimaryKey
content, err := base64EncPubKey(pubkey)
if err != nil {
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k := &GPGKey{
Content: content,
CanSign: pubkey.CanSign(),
KeyID: pubkey.KeyIdString(),
}
for _, subKey := range ekey.Subkeys {
content, err := base64EncPubKey(subKey.PublicKey)
if err != nil {
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
k.SubsKey = append(k.SubsKey, &GPGKey{
Content: content,
CanSign: subKey.PublicKey.CanSign(),
KeyID: subKey.PublicKey.KeyIdString(),
})
}
if commitVerification := hashAndVerifyWithSubKeysObjectVerification(sig, payload, k, committer, &user_model.User{
Name: gpgSettings.Name,
Email: gpgSettings.Email,
}, gpgSettings.Email); commitVerification != nil {
return commitVerification
}
if keyID == k.KeyID {
// This is a bad situation ... We have a key id that matches our default key but the signature doesn't match.
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
}
}
}
return nil
}
func verifySign(s *packet.Signature, h hash.Hash, k *GPGKey) error {
// Check if key can sign
if !k.CanSign {
return fmt.Errorf("key can not sign")
}
// Decode key
pkey, err := base64DecPubKey(k.Content)
if err != nil {
return err
}
return pkey.VerifySignature(h, s)
}
func hashAndVerify(sig *packet.Signature, payload string, k *GPGKey) (*GPGKey, error) {
// Generating hash of commit
hash, err := populateHash(sig.Hash, []byte(payload))
if err != nil { // Skipping as failed to generate hash
log.Error("PopulateHash: %v", err)
return nil, err
}
// We will ignore errors in verification as they don't need to be propagated up
err = verifySign(sig, hash, k)
if err != nil {
return nil, nil
}
return k, nil
}
func hashAndVerifyWithSubKeys(sig *packet.Signature, payload string, k *GPGKey) (*GPGKey, error) {
verified, err := hashAndVerify(sig, payload, k)
if err != nil || verified != nil {
return verified, err
}
for _, sk := range k.SubsKey {
verified, err := hashAndVerify(sig, payload, sk)
if err != nil || verified != nil {
return verified, err
}
}
return nil, nil
}
func hashAndVerifyWithSubKeysObjectVerification(sig *packet.Signature, payload string, k *GPGKey, committer, signer *user_model.User, email string) *ObjectVerification {
key, err := hashAndVerifyWithSubKeys(sig, payload, k)
if err != nil { // Skipping failed to generate hash
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.generate_hash",
}
}
if key != nil {
return &ObjectVerification{ // Everything is ok
CommittingUser: committer,
Verified: true,
Reason: fmt.Sprintf("%s / %s", signer.Name, key.KeyID),
SigningUser: signer,
SigningKey: key,
SigningEmail: email,
}
}
return nil
}
func hashAndVerifyForKeyID(ctx context.Context, sig *packet.Signature, payload string, committer *user_model.User, keyID, name, email string) *ObjectVerification {
if keyID == "" {
return nil
}
keys, err := db.Find[GPGKey](ctx, FindGPGKeyOptions{
KeyID: keyID,
IncludeSubKeys: true,
})
if err != nil {
log.Error("GetGPGKeysByKeyID: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
if len(keys) == 0 {
return nil
}
for _, key := range keys {
var primaryKeys []*GPGKey
if key.PrimaryKeyID != "" {
primaryKeys, err = db.Find[GPGKey](ctx, FindGPGKeyOptions{
KeyID: key.PrimaryKeyID,
IncludeSubKeys: true,
})
if err != nil {
log.Error("GetGPGKeysByKeyID: %v", err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys",
}
}
}
activated, email := checkKeyEmails(ctx, email, append([]*GPGKey{key}, primaryKeys...)...)
if !activated {
continue
}
signer := &user_model.User{
Name: name,
Email: email,
}
if key.OwnerID != 0 {
owner, err := user_model.GetUserByID(ctx, key.OwnerID)
if err == nil {
signer = owner
} else if !user_model.IsErrUserNotExist(err) {
log.Error("Failed to user_model.GetUserByID: %d for key ID: %d (%s) %v", key.OwnerID, key.ID, key.KeyID, err)
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Reason: "gpg.error.no_committer_account",
}
}
}
commitVerification := hashAndVerifyWithSubKeysObjectVerification(sig, payload, key, committer, signer, email)
if commitVerification != nil {
return commitVerification
}
}
// This is a bad situation ... We have a key id that is in our database but the signature doesn't match.
return &ObjectVerification{
CommittingUser: committer,
Verified: false,
Warning: true,
Reason: BadSignature,
}
}
// CalculateTrustStatus will calculate the TrustStatus for a commit verification within a repository
// There are several trust models in Gitea
func CalculateTrustStatus(verification *ObjectVerification, repoTrustModel repo_model.TrustModelType, isOwnerMemberCollaborator func(*user_model.User) (bool, error), keyMap *map[string]bool) error {
if !verification.Verified {
return nil
}
// In the Committer trust model a signature is trusted if it matches the committer
// - it doesn't matter if they're a collaborator, the owner, Gitea or Github
// NB: This model is commit verification only
if repoTrustModel == repo_model.CommitterTrustModel {
// default to "unmatched"
verification.TrustStatus = "unmatched"
// We can only verify against users in our database but the default key will match
// against by email if it is not in the db.
if (verification.SigningUser.ID != 0 &&
verification.CommittingUser.ID == verification.SigningUser.ID) ||
(verification.SigningUser.ID == 0 && verification.CommittingUser.ID == 0 &&
verification.SigningUser.Email == verification.CommittingUser.Email) {
verification.TrustStatus = "trusted"
}
return nil
}
// Now we drop to the more nuanced trust models...
verification.TrustStatus = "trusted"
if verification.SigningUser.ID == 0 {
// This commit is signed by the default key - but this key is not assigned to a user in the DB.
// However in the repo_model.CollaboratorCommitterTrustModel we cannot mark this as trusted
// unless the default key matches the email of a non-user.
if repoTrustModel == repo_model.CollaboratorCommitterTrustModel && (verification.CommittingUser.ID != 0 ||
verification.SigningUser.Email != verification.CommittingUser.Email) {
verification.TrustStatus = "untrusted"
}
return nil
}
// Check we actually have a GPG SigningKey
var err error
if verification.SigningKey != nil {
var isMember bool
if keyMap != nil {
var has bool
isMember, has = (*keyMap)[verification.SigningKey.KeyID]
if !has {
isMember, err = isOwnerMemberCollaborator(verification.SigningUser)
(*keyMap)[verification.SigningKey.KeyID] = isMember
}
} else {
isMember, err = isOwnerMemberCollaborator(verification.SigningUser)
}
if !isMember {
verification.TrustStatus = "untrusted"
if verification.CommittingUser.ID != verification.SigningUser.ID {
// The committing user and the signing user are not the same
// This should be marked as questionable unless the signing user is a collaborator/team member etc.
verification.TrustStatus = "unmatched"
}
} else if repoTrustModel == repo_model.CollaboratorCommitterTrustModel && verification.CommittingUser.ID != verification.SigningUser.ID {
// The committing user and the signing user are not the same and our trustmodel states that they must match
verification.TrustStatus = "unmatched"
}
}
return err
}

15
models/asymkey/gpg_key_tag_verification.go Normal file
View file

@ -0,0 +1,15 @@
// Copyright 2024 The Forgejo Authors c/o Codeberg e.V.. All rights reserved.
// SPDX-License-Identifier: MIT
package asymkey
import (
"context"
"code.gitea.io/gitea/modules/git"
)
func ParseTagWithSignature(ctx context.Context, gitRepo *git.Repository, t *git.Tag) *ObjectVerification {
o := tagToGitObject(t, gitRepo)
return ParseObjectWithSignature(ctx, &o)
}

15
models/asymkey/ssh_key_commit_verification.go → models/asymkey/ssh_key_object_verification.go
View file

@ -11,14 +11,13 @@ import (
"code.gitea.io/gitea/models/db" "code.gitea.io/gitea/models/db"
user_model "code.gitea.io/gitea/models/user" user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/log"
"github.com/42wim/sshsig" "github.com/42wim/sshsig"
) )
// ParseCommitWithSSHSignature check if signature is good against keystore. // ParseObjectWithSSHSignature check if signature is good against keystore.
func ParseCommitWithSSHSignature(ctx context.Context, c *git.Commit, committer *user_model.User) *CommitVerification { func ParseObjectWithSSHSignature(ctx context.Context, c *GitObject, committer *user_model.User) *ObjectVerification {
// Now try to associate the signature with the committer, if present // Now try to associate the signature with the committer, if present
if committer.ID != 0 { if committer.ID != 0 {
keys, err := db.Find[PublicKey](ctx, FindPublicKeyOptions{ keys, err := db.Find[PublicKey](ctx, FindPublicKeyOptions{
@ -27,7 +26,7 @@ func ParseCommitWithSSHSignature(ctx context.Context, c *git.Commit, committer *
}) })
if err != nil { // Skipping failed to get ssh keys of user if err != nil { // Skipping failed to get ssh keys of user
log.Error("ListPublicKeys: %v", err) log.Error("ListPublicKeys: %v", err)
return &CommitVerification{ return &ObjectVerification{
CommittingUser: committer, CommittingUser: committer,
Verified: false, Verified: false,
Reason: "gpg.error.failed_retrieval_gpg_keys", Reason: "gpg.error.failed_retrieval_gpg_keys",
@ -55,7 +54,7 @@ func ParseCommitWithSSHSignature(ctx context.Context, c *git.Commit, committer *
for _, k := range keys { for _, k := range keys {
if k.Verified && activated { if k.Verified && activated {
commitVerification := verifySSHCommitVerification(c.Signature.Signature, c.Signature.Payload, k, committer, committer, c.Committer.Email) commitVerification := verifySSHObjectVerification(c.Signature.Signature, c.Signature.Payload, k, committer, committer, c.Committer.Email)
if commitVerification != nil { if commitVerification != nil {
return commitVerification return commitVerification
} }
@ -63,19 +62,19 @@ func ParseCommitWithSSHSignature(ctx context.Context, c *git.Commit, committer *
} }
} }
return &CommitVerification{ return &ObjectVerification{
CommittingUser: committer, CommittingUser: committer,
Verified: false, Verified: false,
Reason: NoKeyFound, Reason: NoKeyFound,
} }
} }
func verifySSHCommitVerification(sig, payload string, k *PublicKey, committer, signer *user_model.User, email string) *CommitVerification { func verifySSHObjectVerification(sig, payload string, k *PublicKey, committer, signer *user_model.User, email string) *ObjectVerification {
if err := sshsig.Verify(bytes.NewBuffer([]byte(payload)), []byte(sig), []byte(k.Content), "git"); err != nil { if err := sshsig.Verify(bytes.NewBuffer([]byte(payload)), []byte(sig), []byte(k.Content), "git"); err != nil {
return nil return nil
} }
return &CommitVerification{ // Everything is ok return &ObjectVerification{ // Everything is ok
CommittingUser: committer, CommittingUser: committer,
Verified: true, Verified: true,
Reason: fmt.Sprintf("%s / %s", signer.Name, k.Fingerprint), Reason: fmt.Sprintf("%s / %s", signer.Name, k.Fingerprint),

18
models/asymkey/ssh_key_commit_verification_test.go → models/asymkey/ssh_key_object_verification_test.go
View file

@ -22,7 +22,8 @@ func TestParseCommitWithSSHSignature(t *testing.T) {
sshKey := unittest.AssertExistsAndLoadBean(t, &PublicKey{ID: 1000, OwnerID: 2}) sshKey := unittest.AssertExistsAndLoadBean(t, &PublicKey{ID: 1000, OwnerID: 2})
t.Run("No commiter", func(t *testing.T) { t.Run("No commiter", func(t *testing.T) {
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, &git.Commit{}, &user_model.User{}) o := commitToGitObject(&git.Commit{})
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, &user_model.User{})
assert.False(t, commitVerification.Verified) assert.False(t, commitVerification.Verified)
assert.Equal(t, NoKeyFound, commitVerification.Reason) assert.Equal(t, NoKeyFound, commitVerification.Reason)
}) })
@ -30,7 +31,8 @@ func TestParseCommitWithSSHSignature(t *testing.T) {
t.Run("Commiter without keys", func(t *testing.T) { t.Run("Commiter without keys", func(t *testing.T) {
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}) user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, &git.Commit{Committer: &git.Signature{Email: user.Email}}, user) o := commitToGitObject(&git.Commit{Committer: &git.Signature{Email: user.Email}})
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, user)
assert.False(t, commitVerification.Verified) assert.False(t, commitVerification.Verified)
assert.Equal(t, NoKeyFound, commitVerification.Reason) assert.Equal(t, NoKeyFound, commitVerification.Reason)
}) })
@ -57,7 +59,8 @@ AAAAQIMufOuSjZeDUujrkVK4sl7ICa0WwEftas8UAYxx0Thdkiw2qWjR1U1PKfTLm16/w8
`, `,
}, },
} }
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, gitCommit, user2) o := commitToGitObject(gitCommit)
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, user2)
assert.False(t, commitVerification.Verified) assert.False(t, commitVerification.Verified)
assert.Equal(t, NoKeyFound, commitVerification.Reason) assert.Equal(t, NoKeyFound, commitVerification.Reason)
}) })
@ -79,7 +82,8 @@ Add content
}, },
} }
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, gitCommit, user2) o := commitToGitObject(gitCommit)
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, user2)
assert.False(t, commitVerification.Verified) assert.False(t, commitVerification.Verified)
assert.Equal(t, NoKeyFound, commitVerification.Reason) assert.Equal(t, NoKeyFound, commitVerification.Reason)
}) })
@ -107,7 +111,8 @@ fs9cMpZVM9BfIKNUSO8QY=
}, },
} }
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, gitCommit, user2) o := commitToGitObject(gitCommit)
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, user2)
assert.True(t, commitVerification.Verified) assert.True(t, commitVerification.Verified)
assert.Equal(t, "user2 / SHA256:TKfwbZMR7e9OnlV2l1prfah1TXH8CmqR0PvFEXVCXA4", commitVerification.Reason) assert.Equal(t, "user2 / SHA256:TKfwbZMR7e9OnlV2l1prfah1TXH8CmqR0PvFEXVCXA4", commitVerification.Reason)
assert.Equal(t, sshKey, commitVerification.SigningSSHKey) assert.Equal(t, sshKey, commitVerification.SigningSSHKey)
@ -138,7 +143,8 @@ muPLbvEduU+Ze/1Ol1pgk=
}, },
} }
commitVerification := ParseCommitWithSSHSignature(db.DefaultContext, gitCommit, user2) o := commitToGitObject(gitCommit)
commitVerification := ParseObjectWithSSHSignature(db.DefaultContext, &o, user2)
assert.True(t, commitVerification.Verified) assert.True(t, commitVerification.Verified)
assert.Equal(t, "user2 / SHA256:TKfwbZMR7e9OnlV2l1prfah1TXH8CmqR0PvFEXVCXA4", commitVerification.Reason) assert.Equal(t, "user2 / SHA256:TKfwbZMR7e9OnlV2l1prfah1TXH8CmqR0PvFEXVCXA4", commitVerification.Reason)
assert.Equal(t, sshKey, commitVerification.SigningSSHKey) assert.Equal(t, sshKey, commitVerification.SigningSSHKey)

2
modules/gitgraph/graph_models.go
View file

@ -238,7 +238,7 @@ func newRefsFromRefNames(refNames []byte) []git.Reference {
type Commit struct { type Commit struct {
Commit *git.Commit Commit *git.Commit
User *user_model.User User *user_model.User
Verification *asymkey_model.CommitVerification Verification *asymkey_model.ObjectVerification
Status *git_model.CommitStatus Status *git_model.CommitStatus
Flow int64 Flow int64
Row int Row int

43
routers/web/repo/release.go
View file

@ -11,6 +11,7 @@ import (
"strings" "strings"
"code.gitea.io/gitea/models" "code.gitea.io/gitea/models"
"code.gitea.io/gitea/models/asymkey"
"code.gitea.io/gitea/models/db" "code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git" git_model "code.gitea.io/gitea/models/git"
repo_model "code.gitea.io/gitea/models/repo" repo_model "code.gitea.io/gitea/models/repo"
@ -18,6 +19,7 @@ import (
user_model "code.gitea.io/gitea/models/user" user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/base" "code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/git" "code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup" "code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/markup/markdown" "code.gitea.io/gitea/modules/markup/markdown"
@ -192,6 +194,7 @@ func Releases(ctx *context.Context) {
} }
ctx.Data["Releases"] = releases ctx.Data["Releases"] = releases
addVerifyTagToContext(ctx)
numReleases := ctx.Data["NumReleases"].(int64) numReleases := ctx.Data["NumReleases"].(int64)
pager := context.NewPagination(int(numReleases), listOptions.PageSize, listOptions.Page, 5) pager := context.NewPagination(int(numReleases), listOptions.PageSize, listOptions.Page, 5)
@ -201,6 +204,44 @@ func Releases(ctx *context.Context) {
ctx.HTML(http.StatusOK, tplReleasesList) ctx.HTML(http.StatusOK, tplReleasesList)
} }
func verifyTagSignature(ctx *context.Context, r *repo_model.Release) (*asymkey.ObjectVerification, error) {
if err := r.LoadAttributes(ctx); err != nil {
return nil, err
}
gitRepo, err := gitrepo.OpenRepository(ctx, r.Repo)
if err != nil {
return nil, err
}
defer gitRepo.Close()
tag, err := gitRepo.GetTag(r.TagName)
if err != nil {
return nil, err
}
if tag.Signature == nil {
return nil, nil
}
verification := asymkey.ParseTagWithSignature(ctx, gitRepo, tag)
return verification, nil
}
func addVerifyTagToContext(ctx *context.Context) {
ctx.Data["VerifyTag"] = func(r *repo_model.Release) *asymkey.ObjectVerification {
v, err := verifyTagSignature(ctx, r)
if err != nil {
return nil
}
return v
}
ctx.Data["HasSignature"] = func(verification *asymkey.ObjectVerification) bool {
if verification == nil {
return false
}
return verification.Reason != "gpg.error.not_signed_commit"
}
}
// TagsList render tags list page // TagsList render tags list page
func TagsList(ctx *context.Context) { func TagsList(ctx *context.Context) {
ctx.Data["PageIsTagList"] = true ctx.Data["PageIsTagList"] = true
@ -240,6 +281,7 @@ func TagsList(ctx *context.Context) {
} }
ctx.Data["Releases"] = releases ctx.Data["Releases"] = releases
addVerifyTagToContext(ctx)
numTags := ctx.Data["NumTags"].(int64) numTags := ctx.Data["NumTags"].(int64)
pager := context.NewPagination(int(numTags), opts.PageSize, opts.Page, 5) pager := context.NewPagination(int(numTags), opts.PageSize, opts.Page, 5)
@ -304,6 +346,7 @@ func SingleRelease(ctx *context.Context) {
if release.IsTag && release.Title == "" { if release.IsTag && release.Title == "" {
release.Title = release.TagName release.Title = release.TagName
} }
addVerifyTagToContext(ctx)
ctx.Data["PageIsSingleTag"] = release.IsTag ctx.Data["PageIsSingleTag"] = release.IsTag
if release.IsTag { if release.IsTag {

1
templates/repo/release/list.tmpl
View file

@ -60,6 +60,7 @@
<div class="markup desc"> <div class="markup desc">
{{$release.RenderedNote}} {{$release.RenderedNote}}
</div> </div>
{{template "repo/tag/verification_line" (dict "ctxData" $ "release" $release)}}
<div class="divider"></div> <div class="divider"></div>
<details class="download" {{if eq $idx 0}}open{{end}}> <details class="download" {{if eq $idx 0}}open{{end}}>
<summary class="tw-my-4"> <summary class="tw-my-4">

3
templates/repo/tag/list.tmpl
View file

@ -16,12 +16,13 @@
{{range $idx, $release := .Releases}} {{range $idx, $release := .Releases}}
<tr> <tr>
<td class="tag"> <td class="tag">
<h3 class="release-tag-name tw-mb-2"> <h3 class="release-tag-name tw-mb-2 tw-flex">
{{if $canReadReleases}} {{if $canReadReleases}}
<a class="tw-flex tw-items-center" href="{{$.RepoLink}}/releases/tag/{{.TagName | PathEscapeSegments}}" rel="nofollow">{{.TagName}}</a> <a class="tw-flex tw-items-center" href="{{$.RepoLink}}/releases/tag/{{.TagName | PathEscapeSegments}}" rel="nofollow">{{.TagName}}</a>
{{else}} {{else}}
<a class="tw-flex tw-items-center" href="{{$.RepoLink}}/src/tag/{{.TagName | PathEscapeSegments}}" rel="nofollow">{{.TagName}}</a> <a class="tw-flex tw-items-center" href="{{$.RepoLink}}/src/tag/{{.TagName | PathEscapeSegments}}" rel="nofollow">{{.TagName}}</a>
{{end}} {{end}}
{{template "repo/tag/verification_box" (dict "ctxData" $ "release" $release)}}
</h3> </h3>
<div class="download tw-flex tw-items-center"> <div class="download tw-flex tw-items-center">
{{if $.Permission.CanRead $.UnitTypeCode}} {{if $.Permission.CanRead $.UnitTypeCode}}

27
templates/repo/tag/verification_box.tmpl Normal file
View file

@ -0,0 +1,27 @@
{{$v := call .ctxData.VerifyTag .release}}
{{if call .ctxData.HasSignature $v}}
{{$class := "isSigned"}}
{{$href := ""}}
{{if $v.Verified}}
{{$href = $v.SigningUser.HomeLink}}
{{$class = (print $class " isVerified")}}
{{else}}
{{$class = (print $class " isWarning")}}
{{end}}
<a {{if $href}}href="{{$href}}"{{end}} class="ui label tw-ml-2 {{$class}}">
{{if $v.Verified}}
<div title="{{$v.Reason}}">
{{if ne $v.SigningUser.ID 0}}
{{svg "gitea-lock"}}
{{ctx.AvatarUtils.Avatar $v.SigningUser 28 "signature"}}
{{else}}
<span title="{{ctx.Locale.Tr "gpg.default_key"}}">{{svg "gitea-lock-cog"}}</span>
{{ctx.AvatarUtils.AvatarByEmail $v.Verification.SigningEmail "" 28 "signature"}}
{{end}}
</div>
{{else}}
<span title="{{ctx.Locale.Tr $v.Reason}}">{{svg "gitea-unlock"}}</span>
{{end}}
</a>
{{end}}

80
templates/repo/tag/verification_line.tmpl Normal file
View file

@ -0,0 +1,80 @@
{{$v := call .ctxData.VerifyTag .release}}
{{if call .ctxData.HasSignature $v}}
{{$class := "isSigned"}}
{{$href := ""}}
{{if $v.Verified}}
{{$href = $v.SigningUser.HomeLink}}
{{$class = (print $class " isVerified")}}
{{else}}
{{$class = (print $class " isWarning")}}
{{end}}
<div class="ui bottom attached message tw-text-left tw-flex tw-content-center tw-justify-between tag-signature-row tw-flex-wrap tw-mb-0 {{$class}}">
<div class="tw-flex tw-content-center">
{{if $v.Verified}}
{{if ne $v.SigningUser.ID 0}}
{{svg "gitea-lock" 16 "tw-mr-2"}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.signed_by"}}</span>
{{ctx.AvatarUtils.Avatar $v.SigningUser 28 "tw-mr-2"}}
<a href="{{$v.SigningUser.HomeLink}}"><strong>{{$v.SigningUser.GetDisplayName}}</strong></a>
{{else}}
<span title="{{ctx.Locale.Tr "gpg.default_key"}}">{{svg "gitea-lock-cog" 16 "tw-mr-2"}}</span>
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.signed_by"}}:</span>
{{ctx.AvatarUtils.AvatarByEmail $v.SigningEmail "" 28 "tw-mr-2"}}
<strong>{{$v.SigningUser.GetDisplayName}}</strong>
{{end}}
{{else}}
{{svg "gitea-unlock" 16 "tw-mr-2"}}
<span class="ui text">{{ctx.Locale.Tr $v.Reason}}</span>
{{end}}
</div>
<div class="tw-flex tw-content-center">
{{if $v.Verified}}
{{if ne $v.SigningUser.ID 0}}
{{svg "octicon-verified" 16 "tw-mr-2"}}
{{if $v.SigningSSHKey}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.ssh_key_fingerprint"}}:</span>
{{$v.SigningSSHKey.Fingerprint}}
{{else}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.gpg_key_id"}}:</span>
{{$v.SigningKey.PaddedKeyID}}
{{end}}
{{else}}
{{svg "octicon-unverified" 16 "tw-mr-2"}}
{{if $v.SigningSSHKey}}
<span class="ui text tw-mr-2" data-tooltip-content="{{ctx.Locale.Tr "gpg.default_key"}}">{{ctx.Locale.Tr "repo.commits.ssh_key_fingerprint"}}:</span>
{{$v.SigningSSHKey.Fingerprint}}
{{else}}
<span class="ui text tw-mr-2" data-tooltip-content="{{ctx.Locale.Tr "gpg.default_key"}}">{{ctx.Locale.Tr "repo.commits.gpg_key_id"}}:</span>
{{$v.SigningKey.PaddedKeyID}}
{{end}}
{{end}}
{{else if $v.Warning}}
{{svg "octicon-unverified" 16 "tw-mr-2"}}
{{if $v.SigningSSHKey}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.ssh_key_fingerprint"}}:</span>
{{$v.SigningSSHKey.Fingerprint}}
{{else}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.gpg_key_id"}}:</span>
{{$v.SigningKey.PaddedKeyID}}
{{end}}
{{else}}
{{if $v.SigningKey}}
{{if ne $v.SigningKey.KeyID ""}}
{{svg "octicon-verified" 16 "tw-mr-2"}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.gpg_key_id"}}:</span>
{{$v.SigningKey.PaddedKeyID}}
{{end}}
{{end}}
{{if $v.SigningSSHKey}}
{{if ne $v.SigningSSHKey.Fingerprint ""}}
{{svg "octicon-verified" 16 "tw-mr-2"}}
<span class="ui text tw-mr-2">{{ctx.Locale.Tr "repo.commits.ssh_key_fingerprint"}}:</span>
{{$v.SigningSSHKey.Fingerprint}}
{{end}}
{{end}}
{{end}}
</div>
</div>
{{end}}

107
tests/integration/repo_signed_tag_test.go Normal file
View file

@ -0,0 +1,107 @@
// Copyright 2024 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"fmt"
"net/http"
"os"
"os/exec"
"testing"
auth_model "code.gitea.io/gitea/models/auth"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/graceful"
repo_module "code.gitea.io/gitea/modules/repository"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/tests"
"github.com/stretchr/testify/assert"
)
func TestRepoSSHSignedTags(t *testing.T) {
defer tests.PrepareTestEnv(t)()
// Preparations
user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
repo, _, f := CreateDeclarativeRepo(t, user, "", nil, nil, nil)
defer f()
// Set up an SSH key for the tagger
tmpDir := t.TempDir()
err := os.Chmod(tmpDir, 0o700)
assert.NoError(t, err)
signingKey := fmt.Sprintf("%s/ssh_key", tmpDir)
cmd := exec.Command("ssh-keygen", "-t", "ed25519", "-N", "", "-f", signingKey)
err = cmd.Run()
assert.NoError(t, err)
// Set up git config for the tagger
_ = git.NewCommand(git.DefaultContext, "config", "user.name").AddDynamicArguments(user.Name).Run(&git.RunOpts{Dir: repo.RepoPath()})
_ = git.NewCommand(git.DefaultContext, "config", "user.email").AddDynamicArguments(user.Email).Run(&git.RunOpts{Dir: repo.RepoPath()})
_ = git.NewCommand(git.DefaultContext, "config", "gpg.format", "ssh").Run(&git.RunOpts{Dir: repo.RepoPath()})
_ = git.NewCommand(git.DefaultContext, "config", "user.signingkey").AddDynamicArguments(signingKey).Run(&git.RunOpts{Dir: repo.RepoPath()})
// Open the git repo
gitRepo, _ := gitrepo.OpenRepository(git.DefaultContext, repo)
defer gitRepo.Close()
// Create a signed tag
err = git.NewCommand(git.DefaultContext, "tag", "-s", "-m", "this is a signed tag", "ssh-signed-tag").Run(&git.RunOpts{Dir: repo.RepoPath()})
assert.NoError(t, err)
// Sync the tag to the DB
repo_module.SyncRepoTags(graceful.GetManager().ShutdownContext(), repo.ID)
// Helper functions
assertTagSignedStatus := func(t *testing.T, isSigned bool) {
t.Helper()
req := NewRequestf(t, "GET", "%s/releases/tag/ssh-signed-tag", repo.HTMLURL())
resp := MakeRequest(t, req, http.StatusOK)
doc := NewHTMLParser(t, resp.Body)
doc.AssertElement(t, ".tag-signature-row .gitea-unlock", !isSigned)
doc.AssertElement(t, ".tag-signature-row .gitea-lock", isSigned)
}
t.Run("unverified", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
assertTagSignedStatus(t, false)
})
t.Run("verified", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
// Upload the signing key
keyData, err := os.ReadFile(fmt.Sprintf("%s.pub", signingKey))
assert.NoError(t, err)
key := string(keyData)
session := loginUser(t, user.Name)
token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeWriteUser)
req := NewRequestWithJSON(t, "POST", "/api/v1/user/keys", &api.CreateKeyOption{
Key: key,
Title: "test key",
}).AddTokenAuth(token)
resp := MakeRequest(t, req, http.StatusCreated)
var pubkey *api.PublicKey
DecodeJSON(t, resp, &pubkey)
// Mark the key as verified
db.GetEngine(db.DefaultContext).Exec("UPDATE `public_key` SET verified = true WHERE id = ?", pubkey.ID)
// Check the tag page
assertTagSignedStatus(t, true)
})
}

34
web_src/css/repo.css
View file

@ -1878,6 +1878,31 @@
border-bottom: 1px solid var(--color-warning-border); border-bottom: 1px solid var(--color-warning-border);
} }
.repository .release-tag-name .ui.label.isSigned,
.repository .release-list-title .ui.label.isSigned {
padding: 0 0.5em;
box-shadow: none;
}
.repository .release-tag-name .ui.label.isSigned .avatar,
.repository .release-list-title .ui.label.isSigned .avatar {
margin-left: .5rem;
}
.repository .release-tag-name .ui.label.isSigned.isVerified,
.repository .release-list-title .ui.label.isSigned.isVerified {
border: 1px solid var(--color-success-border);
background-color: var(--color-success-bg);
color: var(--color-success-text);
}
.repository .release-tag-name .ui.label.isSigned.isWarning,
.repository .release-list-title .ui.label.isSigned.isWarning {
border: 1px solid var(--color-warning-border);
background-color: var(--color-warning-bg);
color: var(--color-warning-text);
}
.repository .segment.reactions.dropdown .menu, .repository .segment.reactions.dropdown .menu,
.repository .select-reaction.dropdown .menu { .repository .select-reaction.dropdown .menu {
right: 0 !important; right: 0 !important;
@ -2111,12 +2136,19 @@
padding-top: 15px; padding-top: 15px;
} }
.commit-header-row { .commit-header-row,
.tag-signature-row {
min-height: 50px !important; min-height: 50px !important;
padding-top: 0 !important; padding-top: 0 !important;
padding-bottom: 0 !important; padding-bottom: 0 !important;
} }
.tag-signature-row div {
margin-top: auto !important;
margin-bottom: auto !important;
display: inline-block !important;
}
.settings.webhooks .list > .item:not(:first-child), .settings.webhooks .list > .item:not(:first-child),
.settings.githooks .list > .item:not(:first-child), .settings.githooks .list > .item:not(:first-child),
.settings.actions .list > .item:not(:first-child) { .settings.actions .list > .item:not(:first-child) {