/src/FreeRDP/winpr/libwinpr/utils/json/json.c
Line | Count | Source |
1 | | /** |
2 | | * FreeRDP: A Remote Desktop Protocol Implementation |
3 | | * JSON parser wrapper |
4 | | * |
5 | | * Copyright 2024 Armin Novak <anovak@thincast.com> |
6 | | * Copyright 2024 Thincast Technologies GmbH |
7 | | * |
8 | | * Licensed under the Apache License, Version 2.0 (the "License"); |
9 | | * you may not use this file except in compliance with the License. |
10 | | * You may obtain a copy of the License at |
11 | | * |
12 | | * http://www.apache.org/licenses/LICENSE-2.0 |
13 | | * |
14 | | * Unless required by applicable law or agreed to in writing, software |
15 | | * distributed under the License is distributed on an "AS IS" BASIS, |
16 | | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
17 | | * See the License for the specific language governing permissions and |
18 | | * limitations under the License. |
19 | | */ |
20 | | #include <math.h> |
21 | | #include <errno.h> |
22 | | |
23 | | #include <winpr/file.h> |
24 | | #include <winpr/json.h> |
25 | | #include <winpr/assert.h> |
26 | | |
27 | | WINPR_JSON* WINPR_JSON_ParseFromFile(const char* filename) |
28 | 0 | { |
29 | 0 | FILE* fp = winpr_fopen(filename, "r"); |
30 | 0 | if (!fp) |
31 | 0 | return NULL; |
32 | 0 | WINPR_JSON* json = WINPR_JSON_ParseFromFileFP(fp); |
33 | 0 | (void)fclose(fp); |
34 | 0 | return json; |
35 | 0 | } |
36 | | |
37 | | WINPR_JSON* WINPR_JSON_ParseFromFileFP(FILE* fp) |
38 | 0 | { |
39 | 0 | if (!fp) |
40 | 0 | return NULL; |
41 | | |
42 | 0 | if (fseek(fp, 0, SEEK_END) != 0) |
43 | 0 | return NULL; |
44 | | |
45 | 0 | const INT64 size = _ftelli64(fp); |
46 | 0 | if (size < 0) |
47 | 0 | return NULL; |
48 | | |
49 | 0 | if (fseek(fp, 0, SEEK_SET) != 0) |
50 | 0 | return NULL; |
51 | | |
52 | 0 | const size_t usize = WINPR_ASSERTING_INT_CAST(size_t, size); |
53 | 0 | char* str = calloc(usize + 1, sizeof(char)); |
54 | 0 | if (!str) |
55 | 0 | return NULL; |
56 | | |
57 | 0 | WINPR_JSON* json = NULL; |
58 | 0 | const size_t s = fread(str, sizeof(char), usize, fp); |
59 | 0 | if (s == usize) |
60 | 0 | json = WINPR_JSON_ParseWithLength(str, usize); |
61 | 0 | free(str); |
62 | 0 | return json; |
63 | 0 | } |