fix: limitation for length of package/realm path

tm2/pkg/std/memfile.go

@@ -37,6 +37,8 @@ func (mempkg *MemPackage) IsEmpty() bool {
 	return len(mempkg.Files) == 0
 }
 
+const pathLengthLimit = 256
+
 var (
 	rePkgName      = regexp.MustCompile(`^[a-z][a-z0-9_]*$`)
 	rePkgOrRlmPath = regexp.MustCompile(`^gno\.land\/(?:p|r)(?:\/_?[a-z]+[a-z0-9_]*)+$`)
@@ -52,9 +54,14 @@ func (mempkg *MemPackage) Validate() error {
 		return fmt.Errorf("no files found within package %q", mempkg.Name)
 	}
 
+	if len(mempkg.Path) > pathLengthLimit {
+		return fmt.Errorf("path length %d exceeds limit %d", len(mempkg.Path), pathLengthLimit)
+	}
+
 	if !rePkgName.MatchString(mempkg.Name) {
 		return fmt.Errorf("invalid package name %q, failed to match %q", mempkg.Name, rePkgName)
 	}
+
 	if !rePkgOrRlmPath.MatchString(mempkg.Path) {
 		return fmt.Errorf("invalid package/realm path %q, failed to match %q", mempkg.Path, rePkgOrRlmPath)
 	}

tm2/pkg/std/memfile_test.go

@@ -7,6 +7,7 @@ import (
 )
 
 func TestMemPackage_Validate(t *testing.T) {
+	t.Parallel()
 	tt := []struct {
 		name        string
 		mpkg        *MemPackage
@@ -28,7 +29,7 @@ func TestMemPackage_Validate(t *testing.T) {
 				Path:  "gno.land/r/demo/hey",
 				Files: []*MemFile{{Name: "b.gno"}, {Name: "a.gno"}},
 			},
-			`mempackage "gno.land/r/demo/hey" has unsorted files`,
+			"unsorted",
 		},
 		{
 			"Duplicate",
@@ -37,166 +38,235 @@ func TestMemPackage_Validate(t *testing.T) {
 				Path:  "gno.land/r/demo/hey",
 				Files: []*MemFile{{Name: "a.gno"}, {Name: "a.gno"}},
 			},
-			`duplicate file name "a.gno"`,
+			"duplicate",
 		},
-	}
-	for _, tc := range tt {
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.mpkg.Validate()
-			if tc.errContains == "" {
-				assert.NoError(t, err)
-			} else {
-				assert.ErrorContains(t, err, tc.errContains)
-			}
-		})
-	}
-}
-
-func TestRePkgOrRlmPath(t *testing.T) {
-	t.Parallel()
-
-	testTable := []struct {
-		desc, in string
-		expected bool
-	}{
 		{
-			desc:     "Valid p",
-			in:       "gno.land/p/path/path",
-			expected: true,
-		},
-		{
-			desc:     "Valid r",
-			in:       "gno.land/r/path/path",
-			expected: true,
-		},
-		{
-			desc:     "Leading Underscore",
-			in:       "gno.land/r/path/_path",
-			expected: true,
+			"InvalidPathLength",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/very/long/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"path length",
 		},
 		{
-			desc:     "Trailing Underscore",
-			in:       "gno.land/r/path/path_",
-			expected: true,
+			"valid p",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/path/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Underscore in Between",
-			in:       "gno.land/r/path/p_ath",
-			expected: true,
+			"valid r",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Invalid With Underscore 1",
-			in:       "gno.land/r/path/_",
-			expected: false,
+			"Leading underscore",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/_path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Invalid With Underscore 2",
-			in:       "gno.land/r/path/_/_",
-			expected: false,
+			"Trailing underscore",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/path_",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Invalid With Underscore 3",
-			in:       "gno.land/r/path/__/path",
-			expected: false,
+			"Between underscore",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/p_ath",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Invalid With Hyphen",
-			in:       "gno.land/r/path/pa-th",
-			expected: false,
+			"Invalid underscore",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/_",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Invalid x",
-			in:       "gno.land/x/path/path",
-			expected: false,
+			"Invalid underscore 2",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/_/_",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Missing Path 1",
-			in:       "gno.land/p",
-			expected: false,
+			"Invalid underscore 3",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/__/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Missing Path 2",
-			in:       "gno.land/p/",
-			expected: false,
+			"Invalid hyphen",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/path/pa-th",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Invalid domain",
-			in:       "github.com/p/path/path",
-			expected: false,
+			"Invalid x",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/x/path/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Special Character 1",
-			in:       "gno.land/p/p@th/abc/def",
-			expected: false,
+			"Invalid missing path 1",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Special Character 2",
-			in:       "gno.land/p/p&th/abc/def",
-			expected: false,
+			"Invalid missing path 2",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Special Character 3",
-			in:       "gno.land/p/p&%$#h/abc/def",
-			expected: false,
+			"Invalid path",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "github.com/p/path/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Leading Number",
-			in:       "gno.land/p/1Path/abc/def",
-			expected: false,
+			"Special character",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/p@th/abc/def",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Uppercase Letters",
-			in:       "gno.land/p/PaTh/abc/def",
-			expected: false,
+			"Special character 2",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/p&th/abc/def",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Empty Path Part",
-			in:       "gno.land/p/path//def",
-			expected: false,
+			"Invalid number",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/1Path/abc/def",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Trailing Slash",
-			in:       "gno.land/p/path/abc/def/",
-			expected: false,
+			"Invalid uppercase",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/PaTh/abc/def",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Extra Slash(s)",
-			in:       "gno.land/p/path///abc/def",
-			expected: false,
+			"Invalid empty path",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/path//def",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Valid Long path",
-			in:       "gno.land/r/very/very/very/long/path",
-			expected: true,
+			"Invalid trailing slash",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/p/path/abc/def/",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Long Path With Special Character 1",
-			in:       "gno.land/r/very/very/very/long/p@th",
-			expected: false,
+			"valid long path",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/very/very/very/long/path",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"",
 		},
 		{
-			desc:     "Long Path With Special Character 2",
-			in:       "gno.land/r/very/very/v%ry/long/path",
-			expected: false,
+			"Invalid long path with special character",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/very/very/very/long/p@th",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Long Path With Trailing Slash",
-			in:       "gno.land/r/very/very/very/long/path/",
-			expected: false,
+			"Invalid long path with trailing slash",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/very/very/very/long/path/",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 		{
-			desc:     "Long Path With Empty Path Part",
-			in:       "gno.land/r/very/very/very//long/path/",
-			expected: false,
+			"Invalid long path with empty",
+			&MemPackage{
+				Name:  "hey",
+				Path:  "gno.land/r/very/very/very//long/path/",
+				Files: []*MemFile{{Name: "a.gno"}},
+			},
+			"invalid package/realm path",
 		},
 	}
-
-	for _, tc := range testTable {
-		tc := tc
-		t.Run(tc.desc, func(t *testing.T) {
+	for _, tc := range tt {
+		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 
-			assert.Equal(t, tc.expected, rePkgOrRlmPath.MatchString(tc.in))
+			err := tc.mpkg.Validate()
+			if tc.errContains != "" {
+				assert.ErrorContains(t, err, tc.errContains)
+			} else {
+				assert.NoError(t, err)
+			}
 		})
 	}
 }