it.IPConstraint.WithProhibitedError - Code Metrics - Inspection of "refactoring: replace codes by errors" - muonsoft/validation - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — main (#74)

by Igor

created 2022-06-30 14:57 UTC

it.IPConstraint.WithProhibitedError A

↳ Parent: it/web.go

Complexity

Conditions

Size

Total Lines	3
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
cc	1
eloc	3
dl	0
loc	3
rs	10
c	0
b	0
f	0
ccs	0
cts	0
cp	0
crap	2
nop	1

package it

import (
	"errors"
	"net"

	"github.com/muonsoft/validation"
	"github.com/muonsoft/validation/is"
	"github.com/muonsoft/validation/validate"
)

// IsEmail is used for simplified validation of an email address. It allows all values
// with an "@" symbol in, and a "." in the second host part of the email address.
func IsEmail() validation.CustomStringConstraint {
	return validation.NewCustomStringConstraint(is.Email).
		WithError(validation.ErrInvalidEmail).
		WithMessage(validation.ErrInvalidEmail.Template())
}

// IsHTML5Email is used for validation of an email address based on pattern for HTML5
// (see https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address).
func IsHTML5Email() validation.CustomStringConstraint {
	return validation.NewCustomStringConstraint(is.HTML5Email).
		WithError(validation.ErrInvalidEmail).
		WithMessage(validation.ErrInvalidEmail.Template())
}

// IsHostname validates that a value is a valid hostname. It checks that:
//	• each label within a valid hostname may be no more than 63 octets long;
//	• the total length of the hostname must not exceed 255 characters;
//	• hostname is fully qualified and include its top-level domain name
//	  (for instance, example.com is valid but example is not);
//	• checks for reserved top-level domains according to RFC 2606
//	  (hostnames containing them are not considered valid:
//	  .example, .invalid, .localhost, and .test).
//
// If you do not want to check for top-level domains use IsLooseHostname version of constraint.
func IsHostname() validation.CustomStringConstraint {
	return validation.NewCustomStringConstraint(is.StrictHostname).
		WithError(validation.ErrInvalidHostname).
		WithMessage(validation.ErrInvalidHostname.Template())
}

// IsLooseHostname validates that a value is a valid hostname. It checks that:
//	• each label within a valid hostname may be no more than 63 octets long;
//	• the total length of the hostname must not exceed 255 characters.
func IsLooseHostname() validation.CustomStringConstraint {
	return validation.NewCustomStringConstraint(is.Hostname).
		WithError(validation.ErrInvalidHostname).
		WithMessage(validation.ErrInvalidHostname.Template())
}

// URLConstraint is used to validate URL string. This constraint doesn’t check that the host of the
// given URL really exists, because the information of the DNS records is not reliable.
//
// This constraint doesn't check the length of the URL. Use LengthConstraint to check the length of the given value.
type URLConstraint struct {
	isIgnored              bool
	supportsRelativeSchema bool
	schemas                []string
	groups                 []string
	err                    error
	messageTemplate        string
	messageParameters      validation.TemplateParameterList
}

// IsURL creates a URLConstraint to validate an URL. By default, constraint checks
// only for the http:// and https:// schemas. Use the WithSchemas method to configure
// the list of expected schemas. Also, you can use WithRelativeSchema to enable support
// of the relative schema (without schema, e.g. "//example.com").
func IsURL() URLConstraint {
	return URLConstraint{
		schemas:         []string{"http", "https"},
		err:             validation.ErrInvalidURL,
		messageTemplate: validation.ErrInvalidURL.Template(),
	}
}

// WithRelativeSchema enables support of relative URL schema, which means that URL value
// may be treated as relative (without schema, e.g. "//example.com").
func (c URLConstraint) WithRelativeSchema() URLConstraint {
	c.supportsRelativeSchema = true
	return c
}

// WithSchemas is used to set up a list of accepted schemas. For example, if you also consider the ftp:// type URLs
// to be valid, redefine the schemas list, listing http, https, and also ftp.
// If the list is empty, then an error will be returned.
func (c URLConstraint) WithSchemas(schemas ...string) URLConstraint {
	c.schemas = schemas
	return c
}

// WithError overrides default error for produced violation.
func (c URLConstraint) WithError(err error) URLConstraint {
	c.err = err
	return c
}

// WithMessage sets the violation message template. You can set custom template parameters
// for injecting its values into the final message. Also, you can use default parameters:
//
//	{{ value }} - the current (invalid) value.
func (c URLConstraint) WithMessage(template string, parameters ...validation.TemplateParameter) URLConstraint {
	c.messageTemplate = template
	c.messageParameters = parameters
	return c
}

// When enables conditional validation of this constraint. If the expression evaluates to false,
// then the constraint will be ignored.
func (c URLConstraint) When(condition bool) URLConstraint {
	c.isIgnored = !condition
	return c
}

// WhenGroups enables conditional validation of the constraint by using the validation groups.
func (c URLConstraint) WhenGroups(groups ...string) URLConstraint {
	c.groups = groups
	return c
}

func (c URLConstraint) ValidateString(value *string, scope validation.Scope) error {
	if len(c.schemas) == 0 {
		return scope.NewConstraintError("URLConstraint", "empty list of schemas")
	}
	if c.isIgnored || scope.IsIgnored(c.groups...) || value == nil || *value == "" {
		return nil
	}

	schemas := c.schemas
	if c.supportsRelativeSchema {
		schemas = append(schemas, "")
	}
	if is.URL(*value, schemas...) {
		return nil
	}

	return scope.BuildViolation(c.err, c.messageTemplate).
		WithParameters(
			c.messageParameters.Prepend(
				validation.TemplateParameter{Key: "{{ value }}", Value: *value},
			)...,
		).
		Create()
}

// IPConstraint is used to validate IP address. You can check for different versions
// and restrict some ranges by additional options.
type IPConstraint struct {
	isIgnored    bool
	validate     func(value string, restrictions ...validate.IPRestriction) error
	restrictions []validate.IPRestriction

	groups []string

	invalidErr    error
	prohibitedErr error

	invalidMessageTemplate      string
	invalidMessageParameters    validation.TemplateParameterList
	prohibitedMessageTemplate   string
	prohibitedMessageParameters validation.TemplateParameterList
}

// IsIP creates an IPConstraint to validate an IP address (IPv4 or IPv6).
func IsIP() IPConstraint {
	return newIPConstraint(validate.IP)
}

// IsIPv4 creates an IPConstraint to validate an IPv4 address.
func IsIPv4() IPConstraint {
	return newIPConstraint(validate.IPv4)
}

// IsIPv6 creates an IPConstraint to validate an IPv4 address.
func IsIPv6() IPConstraint {
	return newIPConstraint(validate.IPv6)
}

func newIPConstraint(validate func(value string, restrictions ...validate.IPRestriction) error) IPConstraint {
	return IPConstraint{
		validate:                  validate,
		invalidErr:                validation.ErrInvalidIP,
		prohibitedErr:             validation.ErrProhibitedIP,
		invalidMessageTemplate:    validation.ErrInvalidIP.Template(),
		prohibitedMessageTemplate: validation.ErrProhibitedIP.Template(),
	}
}

// DenyPrivateIP denies using of private IPs according to RFC 1918 (IPv4 addresses)
// and RFC 4193 (IPv6 addresses).
func (c IPConstraint) DenyPrivateIP() IPConstraint {
	c.restrictions = append(c.restrictions, validate.DenyPrivateIP())
	return c
}

// DenyIP can be used to deny custom range of IP addresses.
func (c IPConstraint) DenyIP(restrict func(ip net.IP) bool) IPConstraint {
	c.restrictions = append(c.restrictions, restrict)
	return c
}

// WithInvalidError overrides default underlying error for violation produced on invalid IP case.
func (c IPConstraint) WithInvalidError(err error) IPConstraint {
	c.invalidErr = err
	return c
}

// WithProhibitedError overrides default underlying error for violation produced on prohibited IP case.
func (c IPConstraint) WithProhibitedError(err error) IPConstraint {
	c.prohibitedErr = err
	return c
}

// WithInvalidMessage sets the violation message template for invalid IP case.
// You can set custom template parameters for injecting its values into the final message.
// Also, you can use default parameters:
//
//	{{ value }} - the current (invalid) value.
func (c IPConstraint) WithInvalidMessage(template string, parameters ...validation.TemplateParameter) IPConstraint {
	c.invalidMessageTemplate = template
	c.invalidMessageParameters = parameters
	return c
}

// WithProhibitedMessage sets the violation message template for prohibited IP case.
// You can set custom template parameters for injecting its values into the final message.
// Also, you can use default parameters:
//
//	{{ value }} - the current (invalid) value.
func (c IPConstraint) WithProhibitedMessage(template string, parameters ...validation.TemplateParameter) IPConstraint {
	c.prohibitedMessageTemplate = template
	c.prohibitedMessageParameters = parameters
	return c
}

// When enables conditional validation of this constraint. If the expression evaluates to false,
// then the constraint will be ignored.
func (c IPConstraint) When(condition bool) IPConstraint {
	c.isIgnored = !condition
	return c
}

// WhenGroups enables conditional validation of the constraint by using the validation groups.
func (c IPConstraint) WhenGroups(groups ...string) IPConstraint {
	c.groups = groups
	return c
}

func (c IPConstraint) ValidateString(value *string, scope validation.Scope) error {
	if c.isIgnored || scope.IsIgnored(c.groups...) || value == nil || *value == "" {
		return nil
	}

	return c.validateIP(*value, scope)
}

func (c IPConstraint) validateIP(value string, scope validation.Scope) error {
	err := c.validate(value, c.restrictions...)
	if err == nil {
		return nil
	}

	var builder *validation.ViolationBuilder
	var parameters validation.TemplateParameterList

	if errors.Is(err, validate.ErrProhibited) {
		builder = scope.BuildViolation(c.prohibitedErr, c.prohibitedMessageTemplate)
		parameters = c.prohibitedMessageParameters
	} else {
		builder = scope.BuildViolation(c.invalidErr, c.invalidMessageTemplate)
		parameters = c.invalidMessageParameters
	}

	return builder.
		WithParameters(
			parameters.Prepend(
				validation.TemplateParameter{Key: "{{ value }}", Value: value},
			)...,
		).
		Create()
}


1		package it
2
3		import (
4		"errors"
5		"net"
6
7		"github.com/muonsoft/validation"
8		"github.com/muonsoft/validation/is"
9		"github.com/muonsoft/validation/validate"
10		)
11
12		// IsEmail is used for simplified validation of an email address. It allows all values
13		// with an "@" symbol in, and a "." in the second host part of the email address.
14		func IsEmail() validation.CustomStringConstraint {
15		return validation.NewCustomStringConstraint(is.Email).
16		WithError(validation.ErrInvalidEmail).
17	1	WithMessage(validation.ErrInvalidEmail.Template())
18		}
19
20		// IsHTML5Email is used for validation of an email address based on pattern for HTML5
21		// (see https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address).
22		func IsHTML5Email() validation.CustomStringConstraint {
23		return validation.NewCustomStringConstraint(is.HTML5Email).
24		WithError(validation.ErrInvalidEmail).
25		WithMessage(validation.ErrInvalidEmail.Template())
26		}
27
28	1	// IsHostname validates that a value is a valid hostname. It checks that:
29		// • each label within a valid hostname may be no more than 63 octets long;
30		// • the total length of the hostname must not exceed 255 characters;
31		// • hostname is fully qualified and include its top-level domain name
32		// (for instance, example.com is valid but example is not);
33		// • checks for reserved top-level domains according to RFC 2606
34		// (hostnames containing them are not considered valid:
35		// .example, .invalid, .localhost, and .test).
36		//
37		// If you do not want to check for top-level domains use IsLooseHostname version of constraint.
38		func IsHostname() validation.CustomStringConstraint {
39		return validation.NewCustomStringConstraint(is.StrictHostname).
40		WithError(validation.ErrInvalidHostname).
41		WithMessage(validation.ErrInvalidHostname.Template())
42		}
43
44		// IsLooseHostname validates that a value is a valid hostname. It checks that:
45		// • each label within a valid hostname may be no more than 63 octets long;
46		// • the total length of the hostname must not exceed 255 characters.
47	1	func IsLooseHostname() validation.CustomStringConstraint {
48		return validation.NewCustomStringConstraint(is.Hostname).
49		WithError(validation.ErrInvalidHostname).
50		WithMessage(validation.ErrInvalidHostname.Template())
51		}
52
53		// URLConstraint is used to validate URL string. This constraint doesn’t check that the host of the
54		// given URL really exists, because the information of the DNS records is not reliable.
55		//
56		// This constraint doesn't check the length of the URL. Use LengthConstraint to check the length of the given value.
57		type URLConstraint struct {
58		isIgnored bool
59	1	supportsRelativeSchema bool
60		schemas []string
61		groups []string
62		err error
63		messageTemplate string
64		messageParameters validation.TemplateParameterList
65		}
66
67		// IsURL creates a URLConstraint to validate an URL. By default, constraint checks
68		// only for the http:// and https:// schemas. Use the WithSchemas method to configure
69		// the list of expected schemas. Also, you can use WithRelativeSchema to enable support
70		// of the relative schema (without schema, e.g. "//example.com").
71		func IsURL() URLConstraint {
72		return URLConstraint{
73		schemas: []string{"http", "https"},
74		err: validation.ErrInvalidURL,
75		messageTemplate: validation.ErrInvalidURL.Template(),
76		}
77		}
78
79		// WithRelativeSchema enables support of relative URL schema, which means that URL value
80		// may be treated as relative (without schema, e.g. "//example.com").
81		func (c URLConstraint) WithRelativeSchema() URLConstraint {
82		c.supportsRelativeSchema = true
83		return c
84		}
85
86	1	// WithSchemas is used to set up a list of accepted schemas. For example, if you also consider the ftp:// type URLs
87		// to be valid, redefine the schemas list, listing http, https, and also ftp.
88		// If the list is empty, then an error will be returned.
89		func (c URLConstraint) WithSchemas(schemas ...string) URLConstraint {
90		c.schemas = schemas
91		return c
92		}
93
94		// WithError overrides default error for produced violation.
95	1	func (c URLConstraint) WithError(err error) URLConstraint {
96	1	c.err = err
97		return c
98		}
99	1
100		// WithMessage sets the violation message template. You can set custom template parameters
101		// for injecting its values into the final message. Also, you can use default parameters:
102		//
103		// {{ value }} - the current (invalid) value.
104	1	func (c URLConstraint) WithMessage(template string, parameters ...validation.TemplateParameter) URLConstraint {
105		c.messageTemplate = template
106		c.messageParameters = parameters
107		return c
108		}
109
110	1	// When enables conditional validation of this constraint. If the expression evaluates to false,
111	1	// then the constraint will be ignored.
112		func (c URLConstraint) When(condition bool) URLConstraint {
113		c.isIgnored = !condition
114		return c
115		}
116
117		// WhenGroups enables conditional validation of the constraint by using the validation groups.
118	1	func (c URLConstraint) WhenGroups(groups ...string) URLConstraint {
119	1	c.groups = groups
120		return c
121		}
122
123		func (c URLConstraint) ValidateString(value *string, scope validation.Scope) error {
124	1	if len(c.schemas) == 0 {
125	1	return scope.NewConstraintError("URLConstraint", "empty list of schemas")
126		}
127		if c.isIgnored \|\| scope.IsIgnored(c.groups...) \|\| value == nil \|\| *value == "" {
128		return nil
129		}
130
131		schemas := c.schemas
132		if c.supportsRelativeSchema {
133	1	schemas = append(schemas, "")
134	1	}
135	1	if is.URL(*value, schemas...) {
136		return nil
137		}
138
139		return scope.BuildViolation(c.err, c.messageTemplate).
140		WithParameters(
141	1	c.messageParameters.Prepend(
142	1	validation.TemplateParameter{Key: "{{ value }}", Value: *value},
143		)...,
144		).
145		Create()
146		}
147	1
148	1	// IPConstraint is used to validate IP address. You can check for different versions
149		// and restrict some ranges by additional options.
150		type IPConstraint struct {
151		isIgnored bool
152	1	validate func(value string, restrictions ...validate.IPRestriction) error
153	1	restrictions []validate.IPRestriction
154
155		groups []string
156	1
157	1	invalidErr error
158	1	prohibitedErr error
159
160	1	invalidMessageTemplate string
161	1	invalidMessageParameters validation.TemplateParameterList
162		prohibitedMessageTemplate string
163		prohibitedMessageParameters validation.TemplateParameterList
164	1	}
165
166		// IsIP creates an IPConstraint to validate an IP address (IPv4 or IPv6).
167		func IsIP() IPConstraint {
168		return newIPConstraint(validate.IP)
169		}
170
171		// IsIPv4 creates an IPConstraint to validate an IPv4 address.
172		func IsIPv4() IPConstraint {
173		return newIPConstraint(validate.IPv4)
174		}
175
176		// IsIPv6 creates an IPConstraint to validate an IPv4 address.
177		func IsIPv6() IPConstraint {
178		return newIPConstraint(validate.IPv6)
179		}
180
181		func newIPConstraint(validate func(value string, restrictions ...validate.IPRestriction) error) IPConstraint {
182		return IPConstraint{
183		validate: validate,
184		invalidErr: validation.ErrInvalidIP,
185		prohibitedErr: validation.ErrProhibitedIP,
186		invalidMessageTemplate: validation.ErrInvalidIP.Template(),
187		prohibitedMessageTemplate: validation.ErrProhibitedIP.Template(),
188		}
189		}
190
191		// DenyPrivateIP denies using of private IPs according to RFC 1918 (IPv4 addresses)
192		// and RFC 4193 (IPv6 addresses).
193	1	func (c IPConstraint) DenyPrivateIP() IPConstraint {
194		c.restrictions = append(c.restrictions, validate.DenyPrivateIP())
195		return c
196		}
197
198	1	// DenyIP can be used to deny custom range of IP addresses.
199		func (c IPConstraint) DenyIP(restrict func(ip net.IP) bool) IPConstraint {
200		c.restrictions = append(c.restrictions, restrict)
201		return c
202		}
203	1
204		// WithInvalidError overrides default underlying error for violation produced on invalid IP case.
205		func (c IPConstraint) WithInvalidError(err error) IPConstraint {
206		c.invalidErr = err
207	1	return c
208		}
209
210		// WithProhibitedError overrides default underlying error for violation produced on prohibited IP case.
211		func (c IPConstraint) WithProhibitedError(err error) IPConstraint {
212		c.prohibitedErr = err
213		return c
214		}
215
216		// WithInvalidMessage sets the violation message template for invalid IP case.
217		// You can set custom template parameters for injecting its values into the final message.
218	1	// Also, you can use default parameters:
219		//
220		// {{ value }} - the current (invalid) value.
221		func (c IPConstraint) WithInvalidMessage(template string, parameters ...validation.TemplateParameter) IPConstraint {
222		c.invalidMessageTemplate = template
223		c.invalidMessageParameters = parameters
224		return c
225		}
226
227		// WithProhibitedMessage sets the violation message template for prohibited IP case.
228		// You can set custom template parameters for injecting its values into the final message.
229	1	// Also, you can use default parameters:
230	1	//
231		// {{ value }} - the current (invalid) value.
232		func (c IPConstraint) WithProhibitedMessage(template string, parameters ...validation.TemplateParameter) IPConstraint {
233		c.prohibitedMessageTemplate = template
234		c.prohibitedMessageParameters = parameters
235	1	return c
236	1	}
237
238		// When enables conditional validation of this constraint. If the expression evaluates to false,
239		// then the constraint will be ignored.
240		func (c IPConstraint) When(condition bool) IPConstraint {
241	1	c.isIgnored = !condition
242	1	return c
243		}
244
245		// WhenGroups enables conditional validation of the constraint by using the validation groups.
246		func (c IPConstraint) WhenGroups(groups ...string) IPConstraint {
247	1	c.groups = groups
248	1	return c
249		}
250
251		func (c IPConstraint) ValidateString(value *string, scope validation.Scope) error {
252		if c.isIgnored \|\| scope.IsIgnored(c.groups...) \|\| value == nil \|\| *value == "" {
253		return nil
254		}
255
256		return c.validateIP(*value, scope)
257	1	}
258	1
259	1	func (c IPConstraint) validateIP(value string, scope validation.Scope) error {
260		err := c.validate(value, c.restrictions...)
261		if err == nil {
262		return nil
263		}
264
265		var builder *validation.ViolationBuilder
266		var parameters validation.TemplateParameterList
267
268	1	if errors.Is(err, validate.ErrProhibited) {
269	1	builder = scope.BuildViolation(c.prohibitedErr, c.prohibitedMessageTemplate)
270	1	parameters = c.prohibitedMessageParameters
271		} else {
272		builder = scope.BuildViolation(c.invalidErr, c.invalidMessageTemplate)
273		parameters = c.invalidMessageParameters
274		}
275
276	1	return builder.
277	1	WithParameters(
278		parameters.Prepend(
279		validation.TemplateParameter{Key: "{{ value }}", Value: value},
280		)...,
281		).
282	1	Create()
283		}
284

muonsoft / validation

Pull Request — main (#74)

it.IPConstraint.WithProhibitedError A

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