Add rule for 3rd party library.properties maintainer using "Arduino"

3rd party libraries are not maintained by Arduino. Even when 3rd party libraries are based on official libraries, it is
best practice for the library.properties `maintainer` field to be updated to reflect the true maintainer of the project.

There is already rule LP027 to promote accuracy in documenting maintainership by prohibiting maintainer values that start
with "Arduino". However, this might not cover all inaccurate maintainer declarations. For this reason, a new rule (LP057)
is added here to prohibit maintainer values in 3rd party libraries from containing the term "Arduino" anywhere
(case insensitive). Violations of this rule only result in an error when in "strict" compliance mode.

Author: per1234

etc/schemas/arduino-library-properties-definitions-schema.json

@@ -244,6 +244,9 @@
             "allOf": [
               {
                 "$ref": "#/definitions/propertiesObjects/maintainer/specification/object"
+              },
+              {
+                "$ref": "#/definitions/propertiesObjects/name/strict/definitions/patternObjects/notContainsArduino"
               }
             ]
           }

internal/project/library/libraryproperties/librarypropertiesschemas_test.go

@@ -291,8 +291,11 @@ func TestPropertiesVersionPattern(t *testing.T) {
 func TestPropertiesMaintainerPattern(t *testing.T) {
 	testTables := []propertyValueTestTable{
 		{"Starts with arduino", "arduinofoo", compliancelevel.Permissive, assert.False},
+		{"Contains arduino", "fooarduinobar", compliancelevel.Permissive, assert.False},
 		{"Starts with arduino", "arduinofoo", compliancelevel.Specification, assert.True},
+		{"Contains arduino", "fooarduinobar", compliancelevel.Specification, assert.False},
 		{"Starts with arduino", "arduinofoo", compliancelevel.Strict, assert.True},
+		{"Contains arduino", "fooarduinobar", compliancelevel.Strict, assert.True},
 	}
 
 	checkPropertyPatternMismatch("maintainer", testTables, t)

internal/rule/ruleconfiguration/ruleconfiguration.go

@@ -681,6 +681,22 @@ var configurations = []Type{
 		ErrorModes:       []rulemode.Type{rulemode.Strict},
 		RuleFunction:     rulefunction.LibraryPropertiesMaintainerFieldStartsWithArduino,
 	},
+	{
+		ProjectType:      projecttype.Library,
+		SuperprojectType: projecttype.All,
+		Category:         "library.properties",
+		Subcategory:      "maintainer field",
+		ID:               "LP057",
+		Brief:            `maintainer contains "Arduino"`,
+		Description:      "Case insensitive.",
+		MessageTemplate:  `library.properties maintainer value {{.}} contains "Arduino". 3rd party libraries are not maintained by Arduino.`,
+		DisableModes:     []rulemode.Type{rulemode.Official},
+		EnableModes:      []rulemode.Type{rulemode.Default},
+		InfoModes:        nil,
+		WarningModes:     []rulemode.Type{rulemode.Default},
+		ErrorModes:       []rulemode.Type{rulemode.Strict},
+		RuleFunction:     rulefunction.LibraryPropertiesMaintainerFieldContainsArduino,
+	},
 	{
 		ProjectType:      projecttype.Library,
 		SuperprojectType: projecttype.All,

internal/rule/rulefunction/library.go

@@ -742,6 +742,24 @@ func LibraryPropertiesMaintainerFieldStartsWithArduino() (result ruleresult.Type
 	return ruleresult.Pass, ""
 }
 
+// LibraryPropertiesMaintainerFieldContainsArduino checks if the library.properties "maintainer" value contains "Arduino".
+func LibraryPropertiesMaintainerFieldContainsArduino() (result ruleresult.Type, output string) {
+	if projectdata.LibraryPropertiesLoadError() != nil {
+		return ruleresult.NotRun, "Couldn't load library.properties"
+	}
+
+	maintainer, ok := projectdata.LibraryProperties().GetOk("maintainer")
+	if !ok {
+		return ruleresult.NotRun, "Field not present"
+	}
+
+	if schema.ValidationErrorMatch("^#/maintainer$", "/patternObjects/notContainsArduino", "", "", projectdata.LibraryPropertiesSchemaValidationResult()[compliancelevel.Strict]) {
+		return ruleresult.Fail, maintainer
+	}
+
+	return ruleresult.Pass, ""
+}
+
 // LibraryPropertiesEmailFieldAsMaintainerAlias checks whether the library.properties "email" field is being used as an alias for the "maintainer" field.
 func LibraryPropertiesEmailFieldAsMaintainerAlias() (result ruleresult.Type, output string) {
 	if projectdata.LibraryPropertiesLoadError() != nil {

internal/rule/rulefunction/library_test.go

@@ -568,6 +568,17 @@ func TestLibraryPropertiesMaintainerFieldStartsWithArduino(t *testing.T) {
 	checkLibraryRuleFunction(LibraryPropertiesMaintainerFieldStartsWithArduino, testTables, t)
 }
 
+func TestLibraryPropertiesMaintainerFieldContainsArduino(t *testing.T) {
+	testTables := []libraryRuleFunctionTestTable{
+		{"Invalid", "InvalidLibraryProperties", ruleresult.NotRun, ""},
+		{"Legacy", "Legacy", ruleresult.NotRun, ""},
+		{"Maintainer field contains Arduino", "MaintainerContainsArduino", ruleresult.Fail, ""},
+		{"Valid", "Recursive", ruleresult.Pass, ""},
+	}
+
+	checkLibraryRuleFunction(LibraryPropertiesMaintainerFieldContainsArduino, testTables, t)
+}
+
 func TestLibraryPropertiesEmailFieldAsMaintainerAlias(t *testing.T) {
 	testTables := []libraryRuleFunctionTestTable{
 		{"Unable to load", "InvalidLibraryProperties", ruleresult.NotRun, ""},

internal/rule/rulefunction/testdata/libraries/MaintainerContainsArduino/library.properties

@@ -0,0 +1,10 @@
+name=MaintainerContainsArduino
+version=1.0.0
+author=Cristian Maglie <c.maglie@example.com>, Pippo Pluto <pippo@example.com>
+maintainer=Cristian "Arduino Wizard" Maglie <c.maglie@example.com>
+sentence=A library that makes coding a web server a breeze.
+paragraph=Supports HTTP1.1 and you can do GET and POST.
+category=Communication
+url=http://example.com/
+architectures=avr
+includes=Recursive.h

internal/rule/rulefunction/testdata/libraries/MaintainerContainsArduino/src/MaintainerContainsArduino.h

@@ -1663,6 +1663,9 @@ var _arduinoLibraryPropertiesDefinitionsSchemaJson = []byte(`{
             "allOf": [
               {
                 "$ref": "#/definitions/propertiesObjects/maintainer/specification/object"
+              },
+              {
+                "$ref": "#/definitions/propertiesObjects/name/strict/definitions/patternObjects/notContainsArduino"
               }
             ]
           }