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* Import github.com/git-lfs/lfs-test-server as lfs module base Imported commit is 3968aac269a77b73924649b9412ae03f7ccd3198 Removed: Dockerfile CONTRIBUTING.md mgmt* script/ vendor/ kvlogger.go .dockerignore .gitignore README.md * Remove config, add JWT support from github.com/mgit-at/lfs-test-server Imported commit f0cdcc5a01599c5a955dc1bbf683bb4acecdba83 * Add LFS settings * Add LFS meta object model * Add LFS routes and initialization * Import github.com/dgrijalva/jwt-go into vendor/ * Adapt LFS module: handlers, routing, meta store * Move LFS routes to /user/repo/info/lfs/* * Add request header checks to LFS BatchHandler / PostHandler * Implement LFS basic authentication * Rework JWT secret generation / load * Implement LFS SSH token authentication with JWT Specification: https://github.com/github/git-lfs/tree/master/docs/api * Integrate LFS settings into install process * Remove LFS objects when repository is deleted Only removes objects from content store when deleted repo is the only referencing repository * Make LFS module stateless Fixes bug where LFS would not work after installation without restarting Gitea * Change 500 'Internal Server Error' to 400 'Bad Request' * Change sql query to xorm call * Remove unneeded type from LFS module * Change internal imports to code.gitea.io/gitea/ * Add Gitea authors copyright * Change basic auth realm to "gitea-lfs" * Add unique indexes to LFS model * Use xorm count function in LFS check on repository delete * Return io.ReadCloser from content store and close after usage * Add LFS info to runWeb() * Export LFS content store base path * LFS file download from UI * Work around git-lfs client issue with unauthenticated requests Returning a dummy Authorization header for unauthenticated requests lets git-lfs client skip asking for auth credentials See: https://github.com/github/git-lfs/issues/1088 * Fix unauthenticated UI downloads from public repositories * Authentication check order, Finish LFS file view logic * Ignore LFS hooks if installed for current OS user Fixes Gitea UI actions for repositories tracking LFS files. Checks for minimum needed git version by parsing the semantic version string. * Hide LFS metafile diff from commit view, marking as binary * Show LFS notice if file in commit view is tracked * Add notbefore/nbf JWT claim * Correct lint suggestions - comments for structs and functions - Add comments to LFS model - Function comment for GetRandomBytesAsBase64 - LFS server function comments and lint variable suggestion * Move secret generation code out of conditional Ensures no LFS code may run with an empty secret * Do not hand out JWT tokens if LFS server support is disabled
94 lines
2.3 KiB
Go
94 lines
2.3 KiB
Go
package jwt
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import (
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"crypto"
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"crypto/hmac"
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"errors"
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)
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// Implements the HMAC-SHA family of signing methods signing methods
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type SigningMethodHMAC struct {
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Name string
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Hash crypto.Hash
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}
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// Specific instances for HS256 and company
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var (
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SigningMethodHS256 *SigningMethodHMAC
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SigningMethodHS384 *SigningMethodHMAC
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SigningMethodHS512 *SigningMethodHMAC
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ErrSignatureInvalid = errors.New("signature is invalid")
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)
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func init() {
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// HS256
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SigningMethodHS256 = &SigningMethodHMAC{"HS256", crypto.SHA256}
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RegisterSigningMethod(SigningMethodHS256.Alg(), func() SigningMethod {
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return SigningMethodHS256
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})
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// HS384
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SigningMethodHS384 = &SigningMethodHMAC{"HS384", crypto.SHA384}
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RegisterSigningMethod(SigningMethodHS384.Alg(), func() SigningMethod {
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return SigningMethodHS384
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})
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// HS512
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SigningMethodHS512 = &SigningMethodHMAC{"HS512", crypto.SHA512}
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RegisterSigningMethod(SigningMethodHS512.Alg(), func() SigningMethod {
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return SigningMethodHS512
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})
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}
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func (m *SigningMethodHMAC) Alg() string {
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return m.Name
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}
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// Verify the signature of HSXXX tokens. Returns nil if the signature is valid.
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func (m *SigningMethodHMAC) Verify(signingString, signature string, key interface{}) error {
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// Verify the key is the right type
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keyBytes, ok := key.([]byte)
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if !ok {
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return ErrInvalidKeyType
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}
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// Decode signature, for comparison
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sig, err := DecodeSegment(signature)
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if err != nil {
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return err
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}
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// Can we use the specified hashing method?
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if !m.Hash.Available() {
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return ErrHashUnavailable
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}
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// This signing method is symmetric, so we validate the signature
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// by reproducing the signature from the signing string and key, then
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// comparing that against the provided signature.
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hasher := hmac.New(m.Hash.New, keyBytes)
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hasher.Write([]byte(signingString))
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if !hmac.Equal(sig, hasher.Sum(nil)) {
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return ErrSignatureInvalid
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}
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// No validation errors. Signature is good.
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return nil
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}
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// Implements the Sign method from SigningMethod for this signing method.
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// Key must be []byte
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func (m *SigningMethodHMAC) Sign(signingString string, key interface{}) (string, error) {
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if keyBytes, ok := key.([]byte); ok {
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if !m.Hash.Available() {
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return "", ErrHashUnavailable
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}
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hasher := hmac.New(m.Hash.New, keyBytes)
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hasher.Write([]byte(signingString))
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return EncodeSegment(hasher.Sum(nil)), nil
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}
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return "", ErrInvalidKey
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}
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