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feat: Body auth #172

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Merged
CodeShellDev merged 2 commits into from
Jan 2, 2026
Merged

feat: Body auth #172

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a0babad
added Body auth
CodeShellDev Jan 2, 2026
61c14b8
Merge branch 'main' into feat/body-auth
CodeShellDev Jan 2, 2026
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61 changes: 52 additions & 9 deletions internals/proxy/middlewares/auth.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import (

"github.com/codeshelldev/gotl/pkg/logger"
log "github.com/codeshelldev/gotl/pkg/logger"
"github.com/codeshelldev/gotl/pkg/request"
"github.com/codeshelldev/secured-signal-api/internals/config"
)

Expand All @@ -22,12 +23,12 @@ var Auth Middleware = Middleware{

type AuthMethod struct {
Name string
Authenticate func(req *http.Request, tokens []string) (bool, error)
Authenticate func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error)
}

var BearerAuth = AuthMethod {
Name: "Bearer",
Authenticate: func(req *http.Request, tokens []string) (bool, error) {
Authenticate: func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
header := req.Header.Get("Authorization")

headerParts := strings.SplitN(header, " ", 2)
Expand All @@ -50,7 +51,7 @@ var BearerAuth = AuthMethod {

var BasicAuth = AuthMethod {
Name: "Basic",
Authenticate: func(req *http.Request, tokens []string) (bool, error) {
Authenticate: func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
header := req.Header.Get("Authorization")

if strings.TrimSpace(header) == "" {
Expand Down Expand Up @@ -90,9 +91,50 @@ var BasicAuth = AuthMethod {
},
}

var BodyAuth = AuthMethod {
Name: "Body",
Authenticate: func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
const authField = "auth"

body, err := request.GetReqBody(req)

if err != nil {
return false, nil
}

body.Write(req)

if body.Empty {
return false, nil
}

value, exists := body.Data[authField]

if !exists {
return false, nil
}

auth, ok := value.(string)

if !ok {
return false, nil
}

if isValidToken(tokens, auth) {
delete(body.Data, authField)

body.Write(req)

return true, nil
}

return false, errors.New("invalid Body token")
},
}

var QueryAuth = AuthMethod {
Name: "Query",
Authenticate: func(req *http.Request, tokens []string) (bool, error) {
Authenticate: func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
const authQuery = "@authorization"

auth := req.URL.Query().Get(authQuery)
Expand All @@ -117,7 +159,7 @@ var QueryAuth = AuthMethod {

var PathAuth = AuthMethod {
Name: "Path",
Authenticate: func(req *http.Request, tokens []string) (bool, error) {
Authenticate: func(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
parts := strings.Split(req.URL.Path, "/")

if len(parts) == 0 {
Expand Down Expand Up @@ -155,6 +197,7 @@ func authHandler(next http.Handler) http.Handler {
var authChain = NewAuthChain().
Use(BearerAuth).
Use(BasicAuth).
Use(BodyAuth).
Use(QueryAuth).
Use(PathAuth)

Expand All @@ -166,11 +209,11 @@ func authHandler(next http.Handler) http.Handler {

var authToken string

success, _ := authChain.Eval(req, tokens)
success, _ := authChain.Eval(w, req, tokens)

if !success {
logger.Warn("User failed to provide auth")
w.Header().Set("WWW-Authenticate", "Basic realm=\"Login Required\", Bearer realm=\"Access Token Required\"")

http.Error(w, "Unauthorized", http.StatusUnauthorized)
return
}
Expand Down Expand Up @@ -202,12 +245,12 @@ func (chain *AuthChain) Use(method AuthMethod) *AuthChain {
return chain
}

func (chain *AuthChain) Eval(req *http.Request, tokens []string) (bool, error) {
func (chain *AuthChain) Eval(w http.ResponseWriter, req *http.Request, tokens []string) (bool, error) {
var err error
var success bool

for _, method := range chain.methods {
success, err = method.Authenticate(req, tokens)
success, err = method.Authenticate(w, req, tokens)

if err != nil {
logger.Warn("User failed ", method.Name, " auth: ", err.Error())
Expand Down