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 #define CURL_NO_FMT_CHECKS
25
26 #include "curlcheck.h"
27
28 #include "urldata.h"
29 #include "sendf.h"
30
31 /*
32 * This test hardcodes the knowledge of the buffer size which is internal to
33 * Curl_infof(). If that buffer is changed in size, this tests needs to be
34 * updated to still be valid.
35 */
36
37 static struct Curl_easy *data;
38
39 static char input[4096];
40 static char result[4096];
41
42 int debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
43 void *userptr);
44
45 /*
46 * This debugf callback is simply dumping the string into the static buffer
47 * for the unit test to inspect. Since we know that we're only dealing with
48 * text we can afford the luxury of skipping the type check here.
49 */
50 int
debugf_cb(CURL * handle,curl_infotype type,char * buf,size_t size,void * userptr)51 debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
52 void *userptr)
53 {
54 (void)handle;
55 (void)type;
56 (void)userptr;
57
58 memset(result, '\0', sizeof(result));
59 memcpy(result, buf, size);
60 return 0;
61 }
62
63 static CURLcode
unit_setup(void)64 unit_setup(void)
65 {
66 CURLcode res = CURLE_OK;
67
68 global_init(CURL_GLOBAL_ALL);
69 data = curl_easy_init();
70 if(!data) {
71 curl_global_cleanup();
72 return CURLE_OUT_OF_MEMORY;
73 }
74 curl_easy_setopt(data, CURLOPT_DEBUGFUNCTION, debugf_cb);
75 curl_easy_setopt(data, CURLOPT_VERBOSE, 1L);
76 return res;
77 }
78
79 static void
unit_stop(void)80 unit_stop(void)
81 {
82 curl_easy_cleanup(data);
83 curl_global_cleanup();
84 }
85
verify(const char * info,const char * two)86 static int verify(const char *info, const char *two)
87 {
88 /* the 'info' one has a newline appended */
89 char *nl = strchr(info, '\n');
90 if(!nl)
91 return 1; /* nope */
92 return strncmp(info, two, nl - info);
93 }
94
95 UNITTEST_START
96
97 /* Injecting a simple short string via a format */
98 msnprintf(input, sizeof(input), "Simple Test");
99 Curl_infof(data, "%s", input);
100 fail_unless(verify(result, input) == 0, "Simple string test");
101
102 /* Injecting a few different variables with a format */
103 Curl_infof(data, "%s %u testing %lu", input, 42, 43L);
104 fail_unless(verify(result, "Simple Test 42 testing 43\n") == 0,
105 "Format string");
106
107 /* Variations of empty strings */
108 Curl_infof(data, "");
109 fail_unless(strlen(result) == 1, "Empty string");
110 Curl_infof(data, "%s", (char *)NULL);
111 fail_unless(verify(result, "(nil)") == 0, "Passing NULL as string");
112
113 /* A string just long enough to not be truncated */
114 memset(input, '\0', sizeof(input));
115 memset(input, 'A', 2047);
116 Curl_infof(data, "%s", input);
117 fail_unless(strlen(result) == 2048, "No truncation of infof input");
118 fail_unless(verify(result, input) == 0, "No truncation of infof input");
119 fail_unless(result[sizeof(result) - 1] == '\0',
120 "No truncation of infof input");
121
122 /* Just over the limit for truncation without newline */
123 memset(input + 2047, 'A', 4);
124 Curl_infof(data, "%s", input);
125 fail_unless(strlen(result) == 2048, "Truncation of infof input 1");
126 fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 1");
127
128 /* Just over the limit for truncation with newline */
129 memset(input + 2047, 'A', 4);
130 memset(input + 2047 + 4, '\n', 1);
131 Curl_infof(data, "%s", input);
132 fail_unless(strlen(result) == 2048, "Truncation of infof input 2");
133 fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 2");
134
135 /* Way over the limit for truncation with newline */
136 memset(input, '\0', sizeof(input));
137 memset(input, 'A', sizeof(input) - 1);
138 Curl_infof(data, "%s", input);
139 fail_unless(strlen(result) == 2048, "Truncation of infof input 3");
140 fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 3");
141
142
143 UNITTEST_STOP
144
