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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
132 lines
4.0 KiB
Go
132 lines
4.0 KiB
Go
package jwt
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"strings"
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)
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type Parser struct {
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ValidMethods []string // If populated, only these methods will be considered valid
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UseJSONNumber bool // Use JSON Number format in JSON decoder
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SkipClaimsValidation bool // Skip claims validation during token parsing
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}
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// Parse, validate, and return a token.
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// keyFunc will receive the parsed token and should return the key for validating.
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// If everything is kosher, err will be nil
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func (p *Parser) Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
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return p.ParseWithClaims(tokenString, MapClaims{}, keyFunc)
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}
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func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
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parts := strings.Split(tokenString, ".")
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if len(parts) != 3 {
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return nil, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
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}
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var err error
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token := &Token{Raw: tokenString}
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// parse Header
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var headerBytes []byte
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if headerBytes, err = DecodeSegment(parts[0]); err != nil {
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if strings.HasPrefix(strings.ToLower(tokenString), "bearer ") {
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return token, NewValidationError("tokenstring should not contain 'bearer '", ValidationErrorMalformed)
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}
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return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
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}
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if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
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return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
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}
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// parse Claims
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var claimBytes []byte
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token.Claims = claims
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if claimBytes, err = DecodeSegment(parts[1]); err != nil {
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return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
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}
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dec := json.NewDecoder(bytes.NewBuffer(claimBytes))
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if p.UseJSONNumber {
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dec.UseNumber()
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}
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// JSON Decode. Special case for map type to avoid weird pointer behavior
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if c, ok := token.Claims.(MapClaims); ok {
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err = dec.Decode(&c)
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} else {
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err = dec.Decode(&claims)
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}
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// Handle decode error
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if err != nil {
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return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
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}
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// Lookup signature method
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if method, ok := token.Header["alg"].(string); ok {
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if token.Method = GetSigningMethod(method); token.Method == nil {
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return token, NewValidationError("signing method (alg) is unavailable.", ValidationErrorUnverifiable)
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}
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} else {
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return token, NewValidationError("signing method (alg) is unspecified.", ValidationErrorUnverifiable)
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}
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// Verify signing method is in the required set
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if p.ValidMethods != nil {
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var signingMethodValid = false
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var alg = token.Method.Alg()
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for _, m := range p.ValidMethods {
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if m == alg {
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signingMethodValid = true
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break
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}
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}
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if !signingMethodValid {
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// signing method is not in the listed set
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return token, NewValidationError(fmt.Sprintf("signing method %v is invalid", alg), ValidationErrorSignatureInvalid)
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}
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}
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// Lookup key
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var key interface{}
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if keyFunc == nil {
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// keyFunc was not provided. short circuiting validation
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return token, NewValidationError("no Keyfunc was provided.", ValidationErrorUnverifiable)
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}
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if key, err = keyFunc(token); err != nil {
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// keyFunc returned an error
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return token, &ValidationError{Inner: err, Errors: ValidationErrorUnverifiable}
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}
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vErr := &ValidationError{}
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// Validate Claims
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if !p.SkipClaimsValidation {
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if err := token.Claims.Valid(); err != nil {
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// If the Claims Valid returned an error, check if it is a validation error,
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// If it was another error type, create a ValidationError with a generic ClaimsInvalid flag set
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if e, ok := err.(*ValidationError); !ok {
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vErr = &ValidationError{Inner: err, Errors: ValidationErrorClaimsInvalid}
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} else {
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vErr = e
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}
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}
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}
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// Perform validation
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token.Signature = parts[2]
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if err = token.Method.Verify(strings.Join(parts[0:2], "."), token.Signature, key); err != nil {
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vErr.Inner = err
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vErr.Errors |= ValidationErrorSignatureInvalid
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}
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if vErr.valid() {
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token.Valid = true
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return token, nil
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}
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return token, vErr
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}
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