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 "test.h"
25
26 #include "testtrace.h"
27 #include "testutil.h"
28 #include "warnless.h"
29 #include "memdebug.h"
30
31 struct transfer_status {
32 CURL *easy;
33 int halted;
34 int counter; /* count write callback invokes */
35 int please; /* number of times xferinfo is called while halted */
36 };
37
please_continue(void * userp,curl_off_t dltotal,curl_off_t dlnow,curl_off_t ultotal,curl_off_t ulnow)38 static int please_continue(void *userp,
39 curl_off_t dltotal,
40 curl_off_t dlnow,
41 curl_off_t ultotal,
42 curl_off_t ulnow)
43 {
44 struct transfer_status *st = (struct transfer_status *)userp;
45 (void)dltotal;
46 (void)dlnow;
47 (void)ultotal;
48 (void)ulnow;
49 if(st->halted) {
50 st->please++;
51 if(st->please == 2) {
52 /* waited enough, unpause! */
53 curl_easy_pause(st->easy, CURLPAUSE_CONT);
54 }
55 }
56 fprintf(stderr, "xferinfo: paused %d\n", st->halted);
57 return 0; /* go on */
58 }
59
header_callback(void * ptr,size_t size,size_t nmemb,void * userp)60 static size_t header_callback(void *ptr, size_t size, size_t nmemb,
61 void *userp)
62 {
63 size_t len = size * nmemb;
64 (void)userp;
65 (void)fwrite(ptr, size, nmemb, stdout);
66 return len;
67 }
68
write_callback(void * ptr,size_t size,size_t nmemb,void * userp)69 static size_t write_callback(void *ptr, size_t size, size_t nmemb, void *userp)
70 {
71 struct transfer_status *st = (struct transfer_status *)userp;
72 size_t len = size * nmemb;
73 st->counter++;
74 if(st->counter > 1) {
75 /* the first call puts us on pause, so subsequent calls are after
76 unpause */
77 fwrite(ptr, size, nmemb, stdout);
78 return len;
79 }
80 if(len)
81 printf("Got bytes but pausing!\n");
82 st->halted = 1;
83 return CURL_WRITEFUNC_PAUSE;
84 }
85
test(char * URL)86 CURLcode test(char *URL)
87 {
88 CURL *curls = NULL;
89 CURLcode res = CURLE_OK;
90 struct transfer_status st;
91
92 start_test_timing();
93
94 memset(&st, 0, sizeof(st));
95
96 global_init(CURL_GLOBAL_ALL);
97
98 easy_init(curls);
99 st.easy = curls; /* to allow callbacks access */
100
101 easy_setopt(curls, CURLOPT_URL, URL);
102 easy_setopt(curls, CURLOPT_WRITEFUNCTION, write_callback);
103 easy_setopt(curls, CURLOPT_WRITEDATA, &st);
104 easy_setopt(curls, CURLOPT_HEADERFUNCTION, header_callback);
105 easy_setopt(curls, CURLOPT_HEADERDATA, &st);
106
107 easy_setopt(curls, CURLOPT_XFERINFOFUNCTION, please_continue);
108 easy_setopt(curls, CURLOPT_XFERINFODATA, &st);
109 easy_setopt(curls, CURLOPT_NOPROGRESS, 0L);
110
111 libtest_debug_config.nohex = 1;
112 libtest_debug_config.tracetime = 1;
113 test_setopt(curls, CURLOPT_DEBUGDATA, &libtest_debug_config);
114 easy_setopt(curls, CURLOPT_DEBUGFUNCTION, libtest_debug_cb);
115 easy_setopt(curls, CURLOPT_VERBOSE, 1L);
116
117 res = curl_easy_perform(curls);
118
119 test_cleanup:
120
121 curl_easy_cleanup(curls);
122 curl_global_cleanup();
123
124 return res; /* return the final return code */
125 }
126
