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comparison mupdf-source/thirdparty/curl/docs/examples/debug.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2018, 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.haxx.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 ***************************************************************************/
22 /* <DESC>
23 * Show how CURLOPT_DEBUGFUNCTION can be used.
24 * </DESC>
25 */
26 #include <stdio.h>
27 #include <curl/curl.h>
28
29 struct data {
30 char trace_ascii; /* 1 or 0 */
31 };
32
33 static
34 void dump(const char *text,
35 FILE *stream, unsigned char *ptr, size_t size,
36 char nohex)
37 {
38 size_t i;
39 size_t c;
40
41 unsigned int width = 0x10;
42
43 if(nohex)
44 /* without the hex output, we can fit more on screen */
45 width = 0x40;
46
47 fprintf(stream, "%s, %10.10lu bytes (0x%8.8lx)\n",
48 text, (unsigned long)size, (unsigned long)size);
49
50 for(i = 0; i<size; i += width) {
51
52 fprintf(stream, "%4.4lx: ", (unsigned long)i);
53
54 if(!nohex) {
55 /* hex not disabled, show it */
56 for(c = 0; c < width; c++)
57 if(i + c < size)
58 fprintf(stream, "%02x ", ptr[i + c]);
59 else
60 fputs(" ", stream);
61 }
62
63 for(c = 0; (c < width) && (i + c < size); c++) {
64 /* check for 0D0A; if found, skip past and start a new line of output */
65 if(nohex && (i + c + 1 < size) && ptr[i + c] == 0x0D &&
66 ptr[i + c + 1] == 0x0A) {
67 i += (c + 2 - width);
68 break;
69 }
70 fprintf(stream, "%c",
71 (ptr[i + c] >= 0x20) && (ptr[i + c]<0x80)?ptr[i + c]:'.');
72 /* check again for 0D0A, to avoid an extra \n if it's at width */
73 if(nohex && (i + c + 2 < size) && ptr[i + c + 1] == 0x0D &&
74 ptr[i + c + 2] == 0x0A) {
75 i += (c + 3 - width);
76 break;
77 }
78 }
79 fputc('\n', stream); /* newline */
80 }
81 fflush(stream);
82 }
83
84 static
85 int my_trace(CURL *handle, curl_infotype type,
86 char *data, size_t size,
87 void *userp)
88 {
89 struct data *config = (struct data *)userp;
90 const char *text;
91 (void)handle; /* prevent compiler warning */
92
93 switch(type) {
94 case CURLINFO_TEXT:
95 fprintf(stderr, "== Info: %s", data);
96 /* FALLTHROUGH */
97 default: /* in case a new one is introduced to shock us */
98 return 0;
99
100 case CURLINFO_HEADER_OUT:
101 text = "=> Send header";
102 break;
103 case CURLINFO_DATA_OUT:
104 text = "=> Send data";
105 break;
106 case CURLINFO_SSL_DATA_OUT:
107 text = "=> Send SSL data";
108 break;
109 case CURLINFO_HEADER_IN:
110 text = "<= Recv header";
111 break;
112 case CURLINFO_DATA_IN:
113 text = "<= Recv data";
114 break;
115 case CURLINFO_SSL_DATA_IN:
116 text = "<= Recv SSL data";
117 break;
118 }
119
120 dump(text, stderr, (unsigned char *)data, size, config->trace_ascii);
121 return 0;
122 }
123
124 int main(void)
125 {
126 CURL *curl;
127 CURLcode res;
128 struct data config;
129
130 config.trace_ascii = 1; /* enable ascii tracing */
131
132 curl = curl_easy_init();
133 if(curl) {
134 curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
135 curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &config);
136
137 /* the DEBUGFUNCTION has no effect until we enable VERBOSE */
138 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
139
140 /* example.com is redirected, so we tell libcurl to follow redirection */
141 curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
142
143 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
144 res = curl_easy_perform(curl);
145 /* Check for errors */
146 if(res != CURLE_OK)
147 fprintf(stderr, "curl_easy_perform() failed: %s\n",
148 curl_easy_strerror(res));
149
150 /* always cleanup */
151 curl_easy_cleanup(curl);
152 }
153 return 0;
154 }