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1 | import 'multer' | |
2 | import validator from 'validator' | |
3 | import { sep } from 'path' | |
4 | ||
5 | function exists (value: any) { | |
6 | return value !== undefined && value !== null | |
7 | } | |
8 | ||
9 | function isSafePath (p: string) { | |
10 | return exists(p) && | |
11 | (p + '').split(sep).every(part => { | |
12 | return [ '..' ].includes(part) === false | |
13 | }) | |
14 | } | |
15 | ||
16 | function isArray (value: any) { | |
17 | return Array.isArray(value) | |
18 | } | |
19 | ||
20 | function isNotEmptyIntArray (value: any) { | |
21 | return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0 | |
22 | } | |
23 | ||
24 | function isArrayOf (value: any, validator: (value: any) => boolean) { | |
25 | return isArray(value) && value.every(v => validator(v)) | |
26 | } | |
27 | ||
28 | function isDateValid (value: string) { | |
29 | return exists(value) && validator.isISO8601(value) | |
30 | } | |
31 | ||
32 | function isIdValid (value: string) { | |
33 | return exists(value) && validator.isInt('' + value) | |
34 | } | |
35 | ||
36 | function isUUIDValid (value: string) { | |
37 | return exists(value) && validator.isUUID('' + value, 4) | |
38 | } | |
39 | ||
40 | function isIdOrUUIDValid (value: string) { | |
41 | return isIdValid(value) || isUUIDValid(value) | |
42 | } | |
43 | ||
44 | function isBooleanValid (value: any) { | |
45 | return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value)) | |
46 | } | |
47 | ||
48 | function isIntOrNull (value: any) { | |
49 | return value === null || validator.isInt('' + value) | |
50 | } | |
51 | ||
52 | function toIntOrNull (value: string) { | |
53 | const v = toValueOrNull(value) | |
54 | ||
55 | if (v === null || v === undefined) return v | |
56 | if (typeof v === 'number') return v | |
57 | ||
58 | return validator.toInt('' + v) | |
59 | } | |
60 | ||
61 | function toBooleanOrNull (value: any) { | |
62 | const v = toValueOrNull(value) | |
63 | ||
64 | if (v === null || v === undefined) return v | |
65 | if (typeof v === 'boolean') return v | |
66 | ||
67 | return validator.toBoolean('' + v) | |
68 | } | |
69 | ||
70 | function toValueOrNull (value: string) { | |
71 | if (value === 'null') return null | |
72 | ||
73 | return value | |
74 | } | |
75 | ||
76 | function toArray (value: any) { | |
77 | if (value && isArray(value) === false) return [ value ] | |
78 | ||
79 | return value | |
80 | } | |
81 | ||
82 | function toIntArray (value: any) { | |
83 | if (!value) return [] | |
84 | if (isArray(value) === false) return [ validator.toInt(value) ] | |
85 | ||
86 | return value.map(v => validator.toInt(v)) | |
87 | } | |
88 | ||
89 | function isFileFieldValid ( | |
90 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
91 | field: string, | |
92 | optional = false | |
93 | ) { | |
94 | // Should have files | |
95 | if (!files) return optional | |
96 | if (isArray(files)) return optional | |
97 | ||
98 | // Should have a file | |
99 | const fileArray = files[field] | |
100 | if (!fileArray || fileArray.length === 0) { | |
101 | return optional | |
102 | } | |
103 | ||
104 | // The file should exist | |
105 | const file = fileArray[0] | |
106 | if (!file || !file.originalname) return false | |
107 | return file | |
108 | } | |
109 | ||
110 | function isFileMimeTypeValid ( | |
111 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
112 | mimeTypeRegex: string, | |
113 | field: string, | |
114 | optional = false | |
115 | ) { | |
116 | // Should have files | |
117 | if (!files) return optional | |
118 | if (isArray(files)) return optional | |
119 | ||
120 | // Should have a file | |
121 | const fileArray = files[field] | |
122 | if (!fileArray || fileArray.length === 0) { | |
123 | return optional | |
124 | } | |
125 | ||
126 | // The file should exist | |
127 | const file = fileArray[0] | |
128 | if (!file || !file.originalname) return false | |
129 | ||
130 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
131 | } | |
132 | ||
133 | function isFileValid ( | |
134 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
135 | mimeTypeRegex: string, | |
136 | field: string, | |
137 | maxSize: number | null, | |
138 | optional = false | |
139 | ) { | |
140 | // Should have files | |
141 | if (!files) return optional | |
142 | if (isArray(files)) return optional | |
143 | ||
144 | // Should have a file | |
145 | const fileArray = files[field] | |
146 | if (!fileArray || fileArray.length === 0) { | |
147 | return optional | |
148 | } | |
149 | ||
150 | // The file should exist | |
151 | const file = fileArray[0] | |
152 | if (!file || !file.originalname) return false | |
153 | ||
154 | // Check size | |
155 | if ((maxSize !== null) && file.size > maxSize) return false | |
156 | ||
157 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
158 | } | |
159 | ||
160 | // --------------------------------------------------------------------------- | |
161 | ||
162 | export { | |
163 | exists, | |
164 | isArrayOf, | |
165 | isNotEmptyIntArray, | |
166 | isArray, | |
167 | isIntOrNull, | |
168 | isIdValid, | |
169 | isSafePath, | |
170 | isUUIDValid, | |
171 | isIdOrUUIDValid, | |
172 | isDateValid, | |
173 | toValueOrNull, | |
174 | toBooleanOrNull, | |
175 | isBooleanValid, | |
176 | toIntOrNull, | |
177 | toArray, | |
178 | toIntArray, | |
179 | isFileFieldValid, | |
180 | isFileMimeTypeValid, | |
181 | isFileValid | |
182 | } |