ruleset: add support for all literal as a replacement for .*

bind/flag.go

@@ -136,14 +136,17 @@ func DenyDomains(fs *pflag.FlagSet, cfg *[]ruleset.RegexpListItem) {
 	fs.Var(anyflag.NewSliceValue[ruleset.RegexpListItem](*cfg, cfg, ruleset.ParseRegexpListItem),
 		"deny-domains", "[-]<regexp>,..."+
 			"Deny requests to the specified domains. "+
-			"Prefix domains with '-' to exclude requests to certain domains from being denied.")
+			"Prefix domains with '-' to exclude requests to certain domains from being denied. "+
+			"Special value 'all' matches everything. ",
+	)
 }
 
 func DirectDomains(fs *pflag.FlagSet, cfg *[]ruleset.RegexpListItem) {
 	fs.Var(anyflag.NewSliceValue[ruleset.RegexpListItem](*cfg, cfg, ruleset.ParseRegexpListItem),
 		"direct-domains", "[-]<regexp>,..."+
 			"Connect directly to the specified domains without using the upstream proxy. "+
 			"Prefix domains with '-' to exclude requests to certain domains from being directed. "+
+			"Special value 'all' matches everything. "+
 			"This flag takes precedence over the PAC script.")
 }
 
@@ -176,6 +179,7 @@ func MITMDomains(fs *pflag.FlagSet, cfg *[]ruleset.RegexpListItem) {
 	fs.Var(anyflag.NewSliceValue[ruleset.RegexpListItem](*cfg, cfg, ruleset.ParseRegexpListItem),
 		"mitm-domains", "[-]<regexp>,..."+
 			"Limit MITM to the specified domains. "+
+			"Special value 'all' matches everything. "+
 			"Prefix domains with '-' to exclude requests to certain domains from being MITMed.")
 }
 

ruleset/regexp.go

@@ -77,8 +77,15 @@ type RegexpListItem struct {
 	exclude bool
 }
 
+var allRegexp = regexp.MustCompile(`.*`)
+
 func ParseRegexpListItem(val string) (RegexpListItem, error) {
 	val, exclude := strings.CutPrefix(val, "-")
+
+	if val == "all" {
+		return RegexpListItem{allRegexp, exclude}, nil
+	}
+
 	r, err := regexp.Compile(val)
 	if err != nil {
 		return RegexpListItem{}, err

ruleset/regexp_test.go

@@ -148,6 +148,13 @@ func TestParseRegexpListItem(t *testing.T) {
 				exclude: true,
 			},
 		},
+		{
+			name:  "all literal",
+			input: "all",
+			expected: RegexpListItem{
+				Regexp: allRegexp,
+			},
+		},
 	}
 
 	for i := range tests {