aboutsummaryrefslogtreecommitdiffstats
path: root/util/jsonschema.lua
blob: 3160229fec88b4d62a5e89f8b809a6a2f89ebff5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
-- This file is generated from teal-src/util/jsonschema.lua

local m_type = function(n)
	return type(n) == "number" and n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float";
end;
local json = require("prosody.util.json")
local null = json.null;

local pointer = require("prosody.util.jsonpointer")

local json_type_name = json.json_type_name

local schema_t = {}

local json_schema_object = { xml_t = {} }

local function simple_validate(schema, data)
	if schema == nil then
		return true
	elseif schema == "object" and type(data) == "table" then
		return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "string")
	elseif schema == "array" and type(data) == "table" then
		return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "number")
	elseif schema == "integer" then
		return m_type(data) == schema
	elseif schema == "null" then
		return data == null
	elseif type(schema) == "table" then
		for _, one in ipairs(schema) do
			if simple_validate(one, data) then
				return true
			end
		end
		return false
	else
		return type(data) == schema
	end
end

local complex_validate

local function validate(schema, data, root)
	if type(schema) == "boolean" then
		return schema
	else
		return complex_validate(schema, data, root)
	end
end

function complex_validate(schema, data, root)

	if root == nil then
		root = schema
	end

	if schema["$ref"] and schema["$ref"]:sub(1, 1) == "#" then
		local referenced = pointer.resolve(root, schema["$ref"]:sub(2))
		if referenced ~= nil and referenced ~= root and referenced ~= schema then
			if not validate(referenced, data, root) then
				return false
			end
		end
	end

	if not simple_validate(schema.type, data) then
		return false
	end

	if schema.type == "object" then
		if type(data) == "table" then

			for k in pairs(data) do
				if not (type(k) == "string") then
					return false
				end
			end
		end
	end

	if schema.type == "array" then
		if type(data) == "table" then

			for i in pairs(data) do
				if not (m_type(i) == "integer") then
					return false
				end
			end
		end
	end

	if schema["enum"] ~= nil then
		local match = false
		for _, v in ipairs(schema["enum"]) do
			if v == data then

				match = true
				break
			end
		end
		if not match then
			return false
		end
	end

	if type(data) == "string" then
		if schema.maxLength and #data > schema.maxLength then
			return false
		end
		if schema.minLength and #data < schema.minLength then
			return false
		end
	end

	if type(data) == "number" then
		if schema.multipleOf and (data == 0 or data % schema.multipleOf ~= 0) then
			return false
		end

		if schema.maximum and not (data <= schema.maximum) then
			return false
		end

		if schema.exclusiveMaximum and not (data < schema.exclusiveMaximum) then
			return false
		end

		if schema.minimum and not (data >= schema.minimum) then
			return false
		end

		if schema.exclusiveMinimum and not (data > schema.exclusiveMinimum) then
			return false
		end
	end

	if schema.allOf then
		for _, sub in ipairs(schema.allOf) do
			if not validate(sub, data, root) then
				return false
			end
		end
	end

	if schema.oneOf then
		local valid = 0
		for _, sub in ipairs(schema.oneOf) do
			if validate(sub, data, root) then
				valid = valid + 1
			end
		end
		if valid ~= 1 then
			return false
		end
	end

	if schema.anyOf then
		local match = false
		for _, sub in ipairs(schema.anyOf) do
			if validate(sub, data, root) then
				match = true
				break
			end
		end
		if not match then
			return false
		end
	end

	if schema["not"] then
		if validate(schema["not"], data, root) then
			return false
		end
	end

	if schema["if"] ~= nil then
		if validate(schema["if"], data, root) then
			if schema["then"] then
				return validate(schema["then"], data, root)
			end
		else
			if schema["else"] then
				return validate(schema["else"], data, root)
			end
		end
	end

	if schema.const ~= nil and schema.const ~= data then
		return false
	end

	if type(data) == "table" then

		if schema.maxItems and #data > schema.maxItems then
			return false
		end

		if schema.minItems and #data < schema.minItems then
			return false
		end

		if schema.required then
			for _, k in ipairs(schema.required) do
				if data[k] == nil then
					return false
				end
			end
		end

		if schema.dependentRequired then
			for k, reqs in pairs(schema.dependentRequired) do
				if data[k] ~= nil then
					for _, req in ipairs(reqs) do
						if data[req] == nil then
							return false
						end
					end
				end
			end
		end

		if schema.propertyNames ~= nil then
			for k in pairs(data) do
				if not validate(schema.propertyNames, k, root) then
					return false
				end
			end
		end

		if schema.properties then
			for k, sub in pairs(schema.properties) do
				if data[k] ~= nil and not validate(sub, data[k], root) then
					return false
				end
			end
		end

		if schema.additionalProperties ~= nil then
			for k, v in pairs(data) do
				if schema.properties == nil or schema.properties[k] == nil then
					if not validate(schema.additionalProperties, v, root) then
						return false
					end
				end
			end
		end

		if schema.dependentSchemas then
			for k, sub in pairs(schema.dependentSchemas) do
				if data[k] ~= nil and not validate(sub, data, root) then
					return false
				end
			end
		end

		if schema.uniqueItems then

			local values = {}
			for _, v in pairs(data) do
				if values[v] then
					return false
				end
				values[v] = true
			end
		end

		local p = 0
		if schema.prefixItems ~= nil then
			for i, s in ipairs(schema.prefixItems) do
				if data[i] == nil then
					break
				elseif validate(s, data[i], root) then
					p = i
				else
					return false
				end
			end
		end

		if schema.items ~= nil then
			for i = p + 1, #data do
				if not validate(schema.items, data[i], root) then
					return false
				end
			end
		end

		if schema.contains ~= nil then
			local found = false
			for i = 1, #data do
				if validate(schema.contains, data[i], root) then
					found = true
					break
				end
			end
			if not found then
				return false
			end
		end
	end

	return true
end

json_schema_object.validate = validate;

return json_schema_object