1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11 /*
12 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
13 */
14
15 #include <stdio.h>
16 #include <strings.h>
17
18 #include "libnvpair.h"
19
20 /*
21 * When formatting a string for JSON output we must escape certain characters,
22 * as described in RFC4627. This applies to both member names and
23 * DATA_TYPE_STRING values.
24 */
25 static void
26 nvlist_print_json_string(FILE *fp, const char *input)
27 {
28 char c;
29
30 fprintf(fp, "\"");
31 while ((c = *input++) != '\0') {
32 switch (c) {
33 case '"':
34 fprintf(fp, "\\\"");
35 break;
36 case '\n':
37 fprintf(fp, "\\n");
38 break;
39 case '\r':
40 fprintf(fp, "\\r");
41 break;
42 case '\\':
43 fprintf(fp, "\\\\");
44 break;
45 case '\f':
46 fprintf(fp, "\\f");
47 break;
48 case '\t':
49 fprintf(fp, "\\t");
50 break;
51 case '\b':
52 fprintf(fp, "\\b");
53 break;
54 default:
55 if (c >= 0x00 && c <= 0x1f) {
56 fprintf(fp, "\\u00%02hhu", c);
57 } else {
58 fprintf(fp, "%c", c);
59 }
60 break;
61 }
62 }
63 fprintf(fp, "\"");
64 }
65
66 void
67 nvlist_print_json(FILE *fp, nvlist_t *nvl)
68 {
69 nvpair_t *curr;
70 boolean_t first = B_TRUE;
71
72 fprintf(fp, "{");
73
74 for (curr = nvlist_next_nvpair(nvl, NULL); curr;
75 curr = nvlist_next_nvpair(nvl, curr)) {
76 data_type_t type = nvpair_type(curr);
77
78 if (!first)
79 fprintf(fp, ",");
80 else
81 first = B_FALSE;
82
83 nvlist_print_json_string(fp, nvpair_name(curr));
84 fprintf(fp, ":");
85
86 switch (type) {
87 case DATA_TYPE_STRING: {
88 char *string;
89 nvpair_value_string(curr, &string);
90 nvlist_print_json_string(fp, string);
91 break;
92 }
93
94 case DATA_TYPE_BOOLEAN: {
95 fprintf(fp, "true");
96 break;
97 }
98
99 case DATA_TYPE_BOOLEAN_VALUE: {
100 boolean_t boolean;
101 nvpair_value_boolean_value(curr, &boolean);
102 fprintf(fp, "%s", boolean == B_TRUE ? "true" :
103 "false");
104 break;
105 }
106
107 case DATA_TYPE_BYTE: {
108 uchar_t val;
109 nvpair_value_byte(curr, &val);
110 fprintf(fp, "%hhu", val);
111 break;
112 }
113
114 case DATA_TYPE_INT8: {
115 int8_t val;
116 nvpair_value_int8(curr, &val);
117 fprintf(fp, "%hhd", val);
118 break;
119 }
120
121 case DATA_TYPE_UINT8: {
122 uint8_t val;
123 nvpair_value_uint8(curr, &val);
124 fprintf(fp, "%hhu", val);
125 break;
126 }
127
128 case DATA_TYPE_INT16: {
129 int16_t val;
130 nvpair_value_int16(curr, &val);
131 fprintf(fp, "%hd", val);
132 break;
133 }
134
135 case DATA_TYPE_UINT16: {
136 uint16_t val;
137 nvpair_value_uint16(curr, &val);
138 fprintf(fp, "%hu", val);
139 break;
140 }
141
142 case DATA_TYPE_INT32: {
143 int32_t val;
144 nvpair_value_int32(curr, &val);
145 fprintf(fp, "%d", val);
146 break;
147 }
148
149 case DATA_TYPE_UINT32: {
150 uint32_t val;
151 nvpair_value_uint32(curr, &val);
152 fprintf(fp, "%u", val);
153 break;
154 }
155
156 case DATA_TYPE_INT64: {
157 int64_t val;
158 nvpair_value_int64(curr, &val);
159 fprintf(fp, "%lld", val);
160 break;
161 }
162
163 case DATA_TYPE_UINT64: {
164 uint64_t val;
165 nvpair_value_uint64(curr, &val);
166 fprintf(fp, "%llu", val);
167 break;
168 }
169
170 case DATA_TYPE_HRTIME: {
171 hrtime_t val;
172 nvpair_value_hrtime(curr, &val);
173 fprintf(fp, "%llu", val);
174 break;
175 }
176
177 case DATA_TYPE_DOUBLE: {
178 double val;
179 nvpair_value_double(curr, &val);
180 fprintf(fp, "%f", val);
181 break;
182 }
183
184 case DATA_TYPE_NVLIST: {
185 nvlist_t *val;
186 nvpair_value_nvlist(curr, &val);
187 nvlist_print_json(fp, val);
188 break;
189 }
190
191 case DATA_TYPE_STRING_ARRAY: {
192 char **val;
193 uint_t valsz, pos;
194 nvpair_value_string_array(curr, &val, &valsz);
195 fprintf(fp, "[");
196 for (pos = 0; pos < valsz; pos++) {
197 if (pos > 0)
198 fprintf(fp, ",");
199 nvlist_print_json_string(fp, val[pos]);
200 }
201 fprintf(fp, "]");
202 break;
203 }
204
205 case DATA_TYPE_NVLIST_ARRAY: {
206 nvlist_t **val;
207 uint_t valsz, pos;
208 nvpair_value_nvlist_array(curr, &val, &valsz);
209 fprintf(fp, "[");
210 for (pos = 0; pos < valsz; pos++) {
211 if (pos > 0)
212 fprintf(fp, ",");
213 nvlist_print_json(fp, val[pos]);
214 }
215 fprintf(fp, "]");
216 break;
217 }
218
219 case DATA_TYPE_BOOLEAN_ARRAY: {
220 boolean_t *val;
221 uint_t valsz, pos;
222 nvpair_value_boolean_array(curr, &val, &valsz);
223 fprintf(fp, "[");
224 for (pos = 0; pos < valsz; pos++) {
225 if (pos > 0)
226 fprintf(fp, ",");
227 fprintf(fp, val[pos] == B_TRUE ?
228 "true" : "false");
229 }
230 fprintf(fp, "]");
231 break;
232 }
233
234 case DATA_TYPE_BYTE_ARRAY: {
235 uchar_t *val;
236 uint_t valsz, pos;
237 nvpair_value_byte_array(curr, &val, &valsz);
238 fprintf(fp, "[");
239 for (pos = 0; pos < valsz; pos++) {
240 if (pos > 0)
241 fprintf(fp, ",");
242 fprintf(fp, "%hhu", val[pos]);
243 }
244 fprintf(fp, "]");
245 break;
246 }
247
248 case DATA_TYPE_UINT8_ARRAY: {
249 uint8_t *val;
250 uint_t valsz, pos;
251 nvpair_value_uint8_array(curr, &val, &valsz);
252 fprintf(fp, "[");
253 for (pos = 0; pos < valsz; pos++) {
254 if (pos > 0)
255 fprintf(fp, ",");
256 fprintf(fp, "%hhu", val[pos]);
257 }
258 fprintf(fp, "]");
259 break;
260 }
261
262 case DATA_TYPE_INT8_ARRAY: {
263 int8_t *val;
264 uint_t valsz, pos;
265 nvpair_value_int8_array(curr, &val, &valsz);
266 fprintf(fp, "[");
267 for (pos = 0; pos < valsz; pos++) {
268 if (pos > 0)
269 fprintf(fp, ",");
270 fprintf(fp, "%hd", val[pos]);
271 }
272 fprintf(fp, "]");
273 break;
274 }
275
276 case DATA_TYPE_UINT16_ARRAY: {
277 uint16_t *val;
278 uint_t valsz, pos;
279 nvpair_value_uint16_array(curr, &val, &valsz);
280 fprintf(fp, "[");
281 for (pos = 0; pos < valsz; pos++) {
282 if (pos > 0)
283 fprintf(fp, ",");
284 fprintf(fp, "%hu", val[pos]);
285 }
286 fprintf(fp, "]");
287 break;
288 }
289
290 case DATA_TYPE_INT16_ARRAY: {
291 int16_t *val;
292 uint_t valsz, pos;
293 nvpair_value_int16_array(curr, &val, &valsz);
294 fprintf(fp, "[");
295 for (pos = 0; pos < valsz; pos++) {
296 if (pos > 0)
297 fprintf(fp, ",");
298 fprintf(fp, "%hhd", val[pos]);
299 }
300 fprintf(fp, "]");
301 break;
302 }
303
304 case DATA_TYPE_UINT32_ARRAY: {
305 uint32_t *val;
306 uint_t valsz, pos;
307 nvpair_value_uint32_array(curr, &val, &valsz);
308 fprintf(fp, "[");
309 for (pos = 0; pos < valsz; pos++) {
310 if (pos > 0)
311 fprintf(fp, ",");
312 fprintf(fp, "%u", val[pos]);
313 }
314 fprintf(fp, "]");
315 break;
316 }
317
318 case DATA_TYPE_INT32_ARRAY: {
319 int32_t *val;
320 uint_t valsz, pos;
321 nvpair_value_int32_array(curr, &val, &valsz);
322 fprintf(fp, "[");
323 for (pos = 0; pos < valsz; pos++) {
324 if (pos > 0)
325 fprintf(fp, ",");
326 fprintf(fp, "%d", val[pos]);
327 }
328 fprintf(fp, "]");
329 break;
330 }
331
332 case DATA_TYPE_UINT64_ARRAY: {
333 uint64_t *val;
334 uint_t valsz, pos;
335 nvpair_value_uint64_array(curr, &val, &valsz);
336 fprintf(fp, "[");
337 for (pos = 0; pos < valsz; pos++) {
338 if (pos > 0)
339 fprintf(fp, ",");
340 fprintf(fp, "%llu", val[pos]);
341 }
342 fprintf(fp, "]");
343 break;
344 }
345
346 case DATA_TYPE_INT64_ARRAY: {
347 int64_t *val;
348 uint_t valsz, pos;
349 nvpair_value_int64_array(curr, &val, &valsz);
350 fprintf(fp, "[");
351 for (pos = 0; pos < valsz; pos++) {
352 if (pos > 0)
353 fprintf(fp, ",");
354 fprintf(fp, "%lld", val[pos]);
355 }
356 fprintf(fp, "]");
357 break;
358 }
359
360 case DATA_TYPE_UNKNOWN:
361 fprintf(fp, "null");
362 break;
363 }
364 }
365
366 fprintf(fp, "}");
367 }