1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24 #include "tool_setup.h"
25
26 #define ENABLE_CURLX_PRINTF
27
28 /* use our own printf() functions */
29 #include "curlx.h"
30 #include "tool_cfgable.h"
31 #include "tool_writeout_json.h"
32 #include "tool_writeout.h"
33
jsonWriteString(FILE * stream,const char * in,bool lowercase)34 void jsonWriteString(FILE *stream, const char *in, bool lowercase)
35 {
36 const char *i = in;
37 const char *in_end = in + strlen(in);
38
39 fputc('\"', stream);
40 for(; i < in_end; i++) {
41 switch(*i) {
42 case '\\':
43 fputs("\\\\", stream);
44 break;
45 case '\"':
46 fputs("\\\"", stream);
47 break;
48 case '\b':
49 fputs("\\b", stream);
50 break;
51 case '\f':
52 fputs("\\f", stream);
53 break;
54 case '\n':
55 fputs("\\n", stream);
56 break;
57 case '\r':
58 fputs("\\r", stream);
59 break;
60 case '\t':
61 fputs("\\t", stream);
62 break;
63 default:
64 if (*i < 32) {
65 fprintf(stream, "u%04x", *i);
66 }
67 else {
68 char out = *i;
69 if(lowercase && (out >= 'A' && out <= 'Z'))
70 /* do not use tolower() since that's locale specific */
71 out |= ('a' - 'A');
72 fputc(out, stream);
73 }
74 break;
75 }
76 }
77 fputc('\"', stream);
78 }
79
ourWriteOutJSON(FILE * stream,const struct writeoutvar mappings[],struct per_transfer * per,CURLcode per_result)80 void ourWriteOutJSON(FILE *stream, const struct writeoutvar mappings[],
81 struct per_transfer *per, CURLcode per_result)
82 {
83 int i;
84
85 fputs("{", stream);
86
87 for(i = 0; mappings[i].name != NULL; i++) {
88 if(mappings[i].writefunc &&
89 mappings[i].writefunc(stream, &mappings[i], per, per_result, true))
90 fputs(",", stream);
91 }
92
93 /* The variables are sorted in alphabetical order but as a special case
94 curl_version (which is not actually a --write-out variable) is last. */
95 fprintf(stream, "\"curl_version\":");
96 jsonWriteString(stream, curl_version(), FALSE);
97 fprintf(stream, "}");
98 }
99
100 #ifdef _MSC_VER
101 /* warning C4706: assignment within conditional expression */
102 #pragma warning(disable:4706)
103 #endif
104
headerJSON(FILE * stream,struct per_transfer * per)105 void headerJSON(FILE *stream, struct per_transfer *per)
106 {
107 struct curl_header *header;
108 struct curl_header *prev = NULL;
109
110 fputc('{', stream);
111 while((header = curl_easy_nextheader(per->curl, CURLH_HEADER, -1,
112 prev))) {
113 if(header->amount > 1) {
114 if(!header->index) {
115 /* act on the 0-index entry and pull the others in, then output in a
116 JSON list */
117 size_t a = header->amount;
118 size_t i = 0;
119 char *name = header->name;
120 if(prev)
121 fputs(",\n", stream);
122 jsonWriteString(stream, header->name, TRUE);
123 fputc(':', stream);
124 prev = header;
125 fputc('[', stream);
126 do {
127 jsonWriteString(stream, header->value, FALSE);
128 if(++i >= a)
129 break;
130 fputc(',', stream);
131 if(curl_easy_header(per->curl, name, i, CURLH_HEADER,
132 -1, &header))
133 break;
134 } while(1);
135 fputc(']', stream);
136 }
137 }
138 else {
139 if(prev)
140 fputs(",\n", stream);
141 jsonWriteString(stream, header->name, TRUE);
142 fputc(':', stream);
143 fputc('[', stream);
144 jsonWriteString(stream, header->value, FALSE);
145 fputc(']', stream);
146 prev = header;
147 }
148 }
149 fputs("\n}", stream);
150 }
151