feature: Local user login!

OliveTin.proto

@@ -215,7 +215,14 @@ message LocalUserLoginRequest {
 }
 
 message LocalUserLoginResponse {
-    string authenticated_user = 1;
+    bool success = 1;
+}
+
+message PasswordHashRequest {
+    string password = 1;
+}
+
+message PasswordHashResponse {
 }
 
 service OliveTinApiService {
@@ -308,9 +315,16 @@ service OliveTinApiService {
 		};
 	}
 
-    rpc Authenticate(LocalUserLoginRequest) returns (LocalUserLoginResponse) {
+    rpc LocalUserLogin(LocalUserLoginRequest) returns (LocalUserLoginResponse) {
+        option (google.api.http) = {
+            post: "/api/LocalUserLogin"
+            body: "*"
+        };
+    }
+
+    rpc PasswordHash(PasswordHashRequest) returns (google.api.HttpBody) {
         option (google.api.http) = {
-            post: "/api/authenticate"
+            post: "/api/PasswordHash"
             body: "*"
         };
     }

go.mod

@@ -36,6 +36,7 @@ require (
 	github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 // indirect
 	github.com/MicahParks/jwkset v0.5.17 // indirect
 	github.com/Microsoft/go-winio v0.6.1 // indirect
+	github.com/alexedwards/argon2id v1.0.0 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bufbuild/protocompile v0.9.0 // indirect

go.sum

@@ -52,6 +52,8 @@ github.com/MicahParks/keyfunc/v3 v3.3.2 h1:YTtwc4dxalBZKFqHhqctBWN6VhbLdGhywmne9
 github.com/MicahParks/keyfunc/v3 v3.3.2/go.mod h1:GJBeEjnv25OnD9y2OYQa7ELU6gYahEMBNXINZb+qm34=
 github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
 github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM=
+github.com/alexedwards/argon2id v1.0.0 h1:wJzDx66hqWX7siL/SRUmgz3F8YMrd/nfX/xHHcQQP0w=
+github.com/alexedwards/argon2id v1.0.0/go.mod h1:tYKkqIjzXvZdzPvADMWOEZ+l6+BD6CtBXMj5fnJppiw=
 github.com/antlr4-go/antlr/v4 v4.13.0 h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI=
 github.com/antlr4-go/antlr/v4 v4.13.0/go.mod h1:pfChB/xh/Unjila75QW7+VU4TSnWnnk9UTnmpPaOR2g=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -371,6 +373,7 @@ github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@@ -409,7 +412,9 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
 golang.org/x/crypto v0.25.0 h1:ypSNr+bnYL2YhwoMt2zPxHFmbAN1KZs/njMG3hxUp30=
 golang.org/x/crypto v0.25.0/go.mod h1:T+wALwcMOSE0kXgUAnPAHqTLW+XHgcELELW8VaDgm/M=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -451,6 +456,8 @@ golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -484,6 +491,9 @@ golang.org/x/net v0.0.0-20201031054903-ff519b6c9102/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys=
 golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -507,6 +517,8 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -546,13 +558,22 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
 golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
 golang.org/x/term v0.22.0 h1:BbsgPEJULsl2fV/AT3v15Mjva5yXKQDyKf+TbDz7QJk=
 golang.org/x/term v0.22.0/go.mod h1:F3qCibpT5AMpCRfhfT53vVJwhLtIVHhB9XDjfFvnMI4=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -561,6 +582,10 @@ golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
 golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -617,6 +642,8 @@ golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/acl/acl.go

@@ -134,6 +134,10 @@ func getMetadataKeyOrEmpty(md metadata.MD, key string) string {
 	return ""
 }
 
+func SetUserFromMetadata(md metadata.MD) string {
+	return getMetadataKeyOrEmpty(md, "set-user")
+}
+
 // UserFromContext tries to find a user from a grpc context
 func UserFromContext(ctx context.Context, cfg *config.Config) *AuthenticatedUser {
 	var ret *AuthenticatedUser

internal/config/config.go

@@ -115,7 +115,7 @@ type Config struct {
 	AuthJwtPubKeyPath               string // will read pub key from file on disk
 	AuthHttpHeaderUsername          string
 	AuthHttpHeaderUserGroup         string
-	AuthUsernamePassword            AuthUsernamePasswordConfig
+	AuthLocalUsers                  AuthLocalUsersConfig
 	AuthLoginUrl                    string
 	AuthAllowGuest                  bool
 	AuthOAuth2RedirectURL           string
@@ -140,7 +140,7 @@ type Config struct {
 	usedConfigDir string
 }
 
-type AuthUsernamePasswordConfig struct {
+type AuthLocalUsersConfig struct {
 	Enabled bool
 	Users   []*LocalUser
 }

internal/grpcapi/grpcApi.go

@@ -9,6 +9,7 @@ import (
 	"google.golang.org/genproto/googleapis/api/httpbody"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
 
 	"errors"
@@ -94,16 +95,31 @@ func (api *oliveTinAPI) StartAction(ctx ctx.Context, req *pb.StartActionRequest)
 	}, nil
 }
 
-func (api *oliveTinAPI) Authenticate(ctx ctx.Context, req *pb.LocalUserLoginRequest) (*pb.LocalUserLoginResponse, error) {
-/*
-	user := acl.Authenticate(cfg, req.Username, req.Password)
+func (api *oliveTinAPI) PasswordHash(ctx ctx.Context, req *pb.PasswordHashRequest) (*httpbody.HttpBody, error) {
+	hash, err := createHash(req.Password)
 
-	if user == nil {
-		return nil, status.Errorf(codes.Unauthenticated, "Invalid username or password.")
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "Error creating hash.")
+	}
+
+	ret := &httpbody.HttpBody{
+		ContentType: "text/plain",
+		Data:        []byte("Your password hash is: " + hash),
+	}
+
+	return ret, nil
+}
+
+func (api *oliveTinAPI) LocalUserLogin(ctx ctx.Context, req *pb.LocalUserLoginRequest) (*pb.LocalUserLoginResponse, error) {
+	match := checkUserPassword(cfg, req.Username, req.Password)
+
+	if match {
+		header := metadata.Pairs("set-user", req.Username)
+		grpc.SendHeader(ctx, header)
 	}
-*/
 
 	return &pb.LocalUserLoginResponse{
+		Success: match,
 	}, nil
 }
 

internal/grpcapi/local_user_login.go

@@ -0,0 +1,52 @@
+package grpcapi
+
+import (
+	config "github.com/OliveTin/OliveTin/internal/config"
+	"github.com/alexedwards/argon2id"
+	log "github.com/sirupsen/logrus"
+	"runtime"
+)
+
+var defaultParams = argon2id.Params{
+	Memory:      64 * 1024,
+	Iterations:  4,
+	Parallelism: uint8(runtime.NumCPU()),
+	SaltLength:  16,
+	KeyLength:   32,
+}
+
+func createHash(password string) (string, error) {
+	hash, err := argon2id.CreateHash(password, &defaultParams)
+
+	if err != nil {
+		log.Fatal("Error creating hash: ", err)
+		return "", err
+	}
+
+	return hash, nil
+}
+
+func comparePasswordAndHash(password, hash string) bool {
+	match, err := argon2id.ComparePasswordAndHash(password, hash)
+
+	if err != nil {
+		log.Errorf("Error comparing password and hash: %v", err)
+		return false
+	}
+
+	return match
+}
+
+func checkUserPassword(cfg *config.Config, username, password string) bool {
+	for _, user := range cfg.AuthLocalUsers.Users {
+		if user.Username == username {
+			match := comparePasswordAndHash(password, user.Password)
+
+			if match {
+				return true
+			}
+		}
+	}
+
+	return false
+}

internal/httpservers/restapi.go

@@ -7,6 +7,7 @@ import (
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/reflect/protoreflect"
 	"net/http"
 
 	gw "github.com/OliveTin/OliveTin/gen/grpc"
@@ -45,6 +46,7 @@ func parseHttpHeaderForAuth(req *http.Request) (string, string) {
 	return username[0], ""
 }
 
+//gocyclo:ignore
 func parseRequestMetadata(ctx context.Context, req *http.Request) metadata.MD {
 	username := ""
 	usergroup := ""
@@ -61,6 +63,10 @@ func parseRequestMetadata(ctx context.Context, req *http.Request) metadata.MD {
 		username, usergroup = parseOAuth2Cookie(req)
 	}
 
+	if cfg.AuthLocalUsers.Enabled {
+		username, usergroup = parseLocalUserCookie(req)
+	}
+
 	md := metadata.New(map[string]string{
 		"username":  username,
 		"usergroup": usergroup,
@@ -71,6 +77,12 @@ func parseRequestMetadata(ctx context.Context, req *http.Request) metadata.MD {
 	return md
 }
 
+func forwardResponseHandler(ctx context.Context, w http.ResponseWriter, msg protoreflect.ProtoMessage) error {
+	forwardResponseHandlerLoginLocalUser(ctx, w, msg)
+
+	return nil
+}
+
 func SetGlobalRestConfig(config *config.Config) {
 	cfg = config
 }
@@ -91,6 +103,7 @@ func newMux() *runtime.ServeMux {
 	// The MarshalOptions set some important compatibility settings for the webui. See below.
 	mux := runtime.NewServeMux(
 		runtime.WithMetadata(parseRequestMetadata),
+		runtime.WithForwardResponseOption(forwardResponseHandler),
 		runtime.WithMarshalerOption(runtime.MIMEWildcard, &runtime.HTTPBodyMarshaler{
 			Marshaler: &runtime.JSONPb{
 				MarshalOptions: protojson.MarshalOptions{

internal/httpservers/restapi_auth_local.go

@@ -0,0 +1,61 @@
+package httpservers
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/google/uuid"
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	log "github.com/sirupsen/logrus"
+
+	acl "github.com/OliveTin/OliveTin/internal/acl"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+var (
+	localUserSessions = make(map[string]string) // sid -> username, used for local user sessions
+)
+
+func parseLocalUserCookie(req *http.Request) (string, string) {
+	cookie, err := req.Cookie("olivetin_local_user_sid")
+	if err != nil {
+		return "", ""
+	}
+
+	cookieValue := cookie.Value
+
+	username, ok := localUserSessions[cookieValue]
+
+	if !ok {
+		log.Warnf("Could not find local user session: %v", cookieValue)
+		return "", ""
+	}
+
+	return username, ""
+}
+
+func forwardResponseHandlerLoginLocalUser(ctx context.Context, w http.ResponseWriter, msg protoreflect.ProtoMessage) error {
+	md, ok := runtime.ServerMetadataFromContext(ctx)
+
+	if !ok {
+		log.Warn("Could not get ServerMetadata from context")
+		return nil
+	}
+
+	setUser := acl.SetUserFromMetadata(md.HeaderMD)
+
+	sid := uuid.NewString()
+	localUserSessions[sid] = setUser
+
+	if setUser != "" {
+		http.SetCookie(
+			w,
+			&http.Cookie{
+				Name:  "olivetin_local_user_sid",
+				Value: sid,
+			},
+		)
+	}
+
+	return nil
+}

webui.dev/index.html

@@ -92,35 +92,6 @@
 				</fieldset>
 			</section>
 
-			<section id = "content-login" title = "Login" hidden>
-				<div class = "flex-col">
-				<form class = "box-shadow padded-content">
-					<h2>OAuth Login</h2>
-					<div>
-						<button>GitHub</button>
-						<button>Google</button>
-					</div>
-					<hr />
-					<h2>Local Login</h2>
-					<div class = "arguments">
-						<label for = "username">
-							<span>Username:</span>
-						</label>
-						<input type = "text" name = "username" />
-						<span></span>
-
-						<label for = "password">
-							<span>Password:</span>
-						</label>
-						<input type = "password" name = "password" />
-						<span></span>
-
-						<button type = "submit">Login</button>
-					</div>
-				</form>
-				</div>
-			</section>
-
 			<noscript>
 				<div class = "error">Sorry, JavaScript is required to use OliveTin.</div>
 			</noscript>
@@ -181,7 +152,7 @@
 		<template id = "tplLoginForm">
 			<section id = "content-login" title = "Login" hidden>
 				<div class = "flex-col">
-					<form class = "box-shadow padded-content border-radius">
+					<form class = "box-shadow padded-content border-radius" id = "local-user-login">
 						<p class = "login-disabled">Login with OAuth or Local users is not enabled on this server.</p>
 
 						<div class = "login-oauth2" hidden>
@@ -192,17 +163,18 @@
 
 						<div class = "login-local" hidden>
 							<h2>Local Login</h2>
+							<div class = "error"></div>
 							<div class = "arguments">
 								<label for = "username">
 									<span>Username:</span>
 								</label>
-								<input type = "text" name = "username" />
+								<input type = "text" name = "username" class = "username" />
 								<span></span>
 
 								<label for = "password">
 									<span>Password:</span>
 								</label>
-								<input type = "password" name = "password" />
+								<input type = "password" name = "password" class = "password" />
 								<span></span>
 
 								<button type = "submit">Login</button>

webui.dev/js/LoginForm.js

@@ -4,6 +4,47 @@ export class LoginForm extends window.HTMLElement {
     this.content = tpl.content.cloneNode(true)
 
     this.appendChild(this.content)
+
+    this.querySelector('#local-user-login').addEventListener('submit', (e) => {
+      e.preventDefault()
+      this.localLoginRequest()
+    })
+  }
+
+  localLoginRequest () {
+    const username = this.querySelector('input.username').value
+    const password = this.querySelector('input.password').value
+
+    document.querySelector('.error').innerHTML = ''
+
+    window.fetch('/api/LocalUserLogin', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json'
+      },
+      body: JSON.stringify({
+        username: username,
+        password: password
+      })
+    }).then((response) => {
+      if (response.ok) {
+        const res = response.json()
+
+        if (res !== undefined) {
+          return res
+        } else {
+          throw new Error('Failed to login - no res')
+        }
+      } else {
+        throw new Error('Failed to login')
+      }
+    }).then((res) => {
+      if (res.success) {
+        window.location.reload()
+      } else {
+        document.querySelector('.error').innerHTML = 'Login failed.'
+      }
+    })
   }
 
   processOAuth2Providers (providers) {