1 /*-
2 * Copyright (c) 2013 Hudson River Trading LLC
3 * Written by: John H. Baldwin <jhb@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <err.h>
29 #include <errno.h>
30 #include <limits.h>
31 #include <stdint.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <wchar.h>
36
37 #include <atf-c.h>
38
39 static char *buf;
40 static size_t len;
41
42 static void
assert_stream(const char * contents)43 assert_stream(const char *contents)
44 {
45 if (strlen(contents) != len)
46 printf("bad length %zd for \"%s\"\n", len, contents);
47 else if (strncmp(buf, contents, strlen(contents)) != 0)
48 printf("bad buffer \"%s\" for \"%s\"\n", buf, contents);
49 }
50
51 ATF_TC_WITHOUT_HEAD(open_group_test);
ATF_TC_BODY(open_group_test,tc)52 ATF_TC_BODY(open_group_test, tc)
53 {
54 FILE *fp;
55 off_t eob;
56
57 fp = open_memstream(&buf, &len);
58 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed");
59
60 fprintf(fp, "hello my world");
61 fflush(fp);
62 assert_stream("hello my world");
63 eob = ftello(fp);
64 rewind(fp);
65 fprintf(fp, "good-bye");
66 fseeko(fp, eob, SEEK_SET);
67 fclose(fp);
68 assert_stream("good-bye world");
69 free(buf);
70 }
71
72 ATF_TC_WITHOUT_HEAD(simple_tests);
ATF_TC_BODY(simple_tests,tc)73 ATF_TC_BODY(simple_tests, tc)
74 {
75 static const char zerobuf[] =
76 { 'f', 'o', 'o', 0, 0, 0, 0, 'b', 'a', 'r', 0 };
77 char c;
78 FILE *fp;
79
80 fp = open_memstream(&buf, NULL);
81 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail");
82 ATF_REQUIRE_MSG(errno == EINVAL,
83 "open_memstream didn't fail with EINVAL");
84 fp = open_memstream(NULL, &len);
85 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail");
86 ATF_REQUIRE_MSG(errno == EINVAL,
87 "open_memstream didn't fail with EINVAL");
88 fp = open_memstream(&buf, &len);
89 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed; errno=%d", errno);
90 fflush(fp);
91 assert_stream("");
92 if (fwide(fp, 0) >= 0)
93 printf("stream is not byte-oriented\n");
94
95 fprintf(fp, "fo");
96 fflush(fp);
97 assert_stream("fo");
98 fputc('o', fp);
99 fflush(fp);
100 assert_stream("foo");
101 rewind(fp);
102 fflush(fp);
103 assert_stream("");
104 fseek(fp, 0, SEEK_END);
105 fflush(fp);
106 assert_stream("foo");
107
108 /*
109 * Test seeking out past the current end. Should zero-fill the
110 * intermediate area.
111 */
112 fseek(fp, 4, SEEK_END);
113 fprintf(fp, "bar");
114 fflush(fp);
115
116 /*
117 * Can't use assert_stream() here since this should contain
118 * embedded null characters.
119 */
120 if (len != 10)
121 printf("bad length %zd for zero-fill test\n", len);
122 else if (memcmp(buf, zerobuf, sizeof(zerobuf)) != 0)
123 printf("bad buffer for zero-fill test\n");
124
125 fseek(fp, 3, SEEK_SET);
126 fprintf(fp, " in ");
127 fflush(fp);
128 assert_stream("foo in ");
129 fseek(fp, 0, SEEK_END);
130 fflush(fp);
131 assert_stream("foo in bar");
132
133 rewind(fp);
134 if (fread(&c, sizeof(c), 1, fp) != 0)
135 printf("fread did not fail\n");
136 else if (!ferror(fp))
137 printf("error indicator not set after fread\n");
138 else
139 clearerr(fp);
140
141 fseek(fp, 4, SEEK_SET);
142 fprintf(fp, "bar baz");
143 fclose(fp);
144 assert_stream("foo bar baz");
145 free(buf);
146 }
147
148 ATF_TC_WITHOUT_HEAD(seek_tests);
ATF_TC_BODY(seek_tests,tc)149 ATF_TC_BODY(seek_tests, tc)
150 {
151 FILE *fp;
152
153 fp = open_memstream(&buf, &len);
154 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed: %d", errno);
155
156 #define SEEK_FAIL(offset, whence, error) do { \
157 errno = 0; \
158 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) != 0, \
159 "fseeko(%s, %s) did not fail, set pos to %jd", \
160 __STRING(offset), __STRING(whence), \
161 (intmax_t)ftello(fp)); \
162 ATF_REQUIRE_MSG(errno == (error), \
163 "fseeko(%s, %s) failed with %d rather than %s", \
164 __STRING(offset), __STRING(whence), errno, \
165 __STRING(error)); \
166 } while (0)
167
168 #define SEEK_OK(offset, whence, result) do { \
169 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) == 0, \
170 "fseeko(%s, %s) failed: %s", \
171 __STRING(offset), __STRING(whence), strerror(errno)); \
172 ATF_REQUIRE_MSG(ftello(fp) == (result), \
173 "fseeko(%s, %s) seeked to %jd rather than %s", \
174 __STRING(offset), __STRING(whence), \
175 (intmax_t)ftello(fp), __STRING(result)); \
176 } while (0)
177
178 SEEK_FAIL(-1, SEEK_SET, EINVAL);
179 SEEK_FAIL(-1, SEEK_CUR, EINVAL);
180 SEEK_FAIL(-1, SEEK_END, EINVAL);
181 fprintf(fp, "foo");
182 SEEK_OK(-1, SEEK_CUR, 2);
183 SEEK_OK(0, SEEK_SET, 0);
184 SEEK_OK(-1, SEEK_END, 2);
185 SEEK_OK(OFF_MAX - 1, SEEK_SET, OFF_MAX - 1);
186 SEEK_FAIL(2, SEEK_CUR, EOVERFLOW);
187 fclose(fp);
188 }
189
ATF_TP_ADD_TCS(tp)190 ATF_TP_ADD_TCS(tp)
191 {
192
193 ATF_TP_ADD_TC(tp, open_group_test);
194 ATF_TP_ADD_TC(tp, simple_tests);
195 ATF_TP_ADD_TC(tp, seek_tests);
196
197 return (atf_no_error());
198 }
199