1 /*
2 * Copyright 2018-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <string.h>
11 #include <openssl/opensslconf.h>
12 #include <openssl/err.h>
13 #include <openssl/macros.h>
14
15 #include "testutil.h"
16
17 #if defined(OPENSSL_SYS_WINDOWS)
18 # include <windows.h>
19 #else
20 # include <errno.h>
21 #endif
22
23 #ifndef OPENSSL_NO_DEPRECATED_3_0
24 # define IS_HEX(ch) ((ch >= '0' && ch <='9') || (ch >= 'A' && ch <='F'))
25
test_print_error_format(void)26 static int test_print_error_format(void)
27 {
28 /* Variables used to construct an error line */
29 char *lib;
30 const char *func = OPENSSL_FUNC;
31 char *reason;
32 # ifdef OPENSSL_NO_ERR
33 char reasonbuf[255];
34 # endif
35 # ifndef OPENSSL_NO_FILENAMES
36 const char *file = OPENSSL_FILE;
37 const int line = OPENSSL_LINE;
38 # else
39 const char *file = "";
40 const int line = 0;
41 # endif
42 /* The format for OpenSSL error lines */
43 const char *expected_format = ":error:%08lX:%s:%s:%s:%s:%d";
44 /*-
45 * ^^ ^^ ^^ ^^ ^^
46 * "library" name --------------------------++ || || || ||
47 * function name ------------------------------++ || || ||
48 * reason string (system error string) -----------++ || ||
49 * file name ----------------------------------------++ ||
50 * line number -----------------------------------------++
51 */
52 char expected[512];
53
54 char *out = NULL, *p = NULL;
55 int ret = 0, len;
56 BIO *bio = NULL;
57 const int syserr = EPERM;
58 unsigned long errorcode;
59 unsigned long reasoncode;
60
61 /*
62 * We set a mark here so we can clear the system error that we generate
63 * with ERR_PUT_error(). That is, after all, just a simulation to verify
64 * ERR_print_errors() output, not a real error.
65 */
66 ERR_set_mark();
67
68 ERR_PUT_error(ERR_LIB_SYS, 0, syserr, file, line);
69 errorcode = ERR_peek_error();
70 reasoncode = ERR_GET_REASON(errorcode);
71
72 if (!TEST_int_eq(reasoncode, syserr)) {
73 ERR_pop_to_mark();
74 goto err;
75 }
76
77 # if !defined(OPENSSL_NO_ERR)
78 # if defined(OPENSSL_NO_AUTOERRINIT)
79 lib = "lib(2)";
80 # else
81 lib = "system library";
82 # endif
83 reason = strerror(syserr);
84 # else
85 lib = "lib(2)";
86 BIO_snprintf(reasonbuf, sizeof(reasonbuf), "reason(%lu)", reasoncode);
87 reason = reasonbuf;
88 # endif
89
90 BIO_snprintf(expected, sizeof(expected), expected_format,
91 errorcode, lib, func, reason, file, line);
92
93 if (!TEST_ptr(bio = BIO_new(BIO_s_mem())))
94 goto err;
95
96 ERR_print_errors(bio);
97
98 if (!TEST_int_gt(len = BIO_get_mem_data(bio, &out), 0))
99 goto err;
100 /* Skip over the variable thread id at the start of the string */
101 for (p = out; *p != ':' && *p != 0; ++p) {
102 if (!TEST_true(IS_HEX(*p)))
103 goto err;
104 }
105 if (!TEST_true(*p != 0)
106 || !TEST_strn_eq(expected, p, strlen(expected)))
107 goto err;
108
109 ret = 1;
110 err:
111 BIO_free(bio);
112 return ret;
113 }
114 #endif
115
116 /* Test that querying the error queue preserves the OS error. */
preserves_system_error(void)117 static int preserves_system_error(void)
118 {
119 #if defined(OPENSSL_SYS_WINDOWS)
120 SetLastError(ERROR_INVALID_FUNCTION);
121 ERR_get_error();
122 return TEST_int_eq(GetLastError(), ERROR_INVALID_FUNCTION);
123 #else
124 errno = EINVAL;
125 ERR_get_error();
126 return TEST_int_eq(errno, EINVAL);
127 #endif
128 }
129
130 /* Test that calls to ERR_add_error_[v]data append */
vdata_appends(void)131 static int vdata_appends(void)
132 {
133 const char *data;
134
135 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
136 ERR_add_error_data(1, "hello ");
137 ERR_add_error_data(1, "world");
138 ERR_peek_error_data(&data, NULL);
139 return TEST_str_eq(data, "hello world");
140 }
141
raised_error(void)142 static int raised_error(void)
143 {
144 const char *f, *data;
145 int l;
146 unsigned long e;
147
148 /*
149 * When OPENSSL_NO_ERR or OPENSSL_NO_FILENAMES, no file name or line
150 * number is saved, so no point checking them.
151 */
152 #if !defined(OPENSSL_NO_FILENAMES) && !defined(OPENSSL_NO_ERR)
153 const char *file;
154 int line;
155
156 file = __FILE__;
157 line = __LINE__ + 2; /* The error is generated on the ERR_raise_data line */
158 #endif
159 ERR_raise_data(ERR_LIB_NONE, ERR_R_INTERNAL_ERROR,
160 "calling exit()");
161 if (!TEST_ulong_ne(e = ERR_get_error_all(&f, &l, NULL, &data, NULL), 0)
162 || !TEST_int_eq(ERR_GET_REASON(e), ERR_R_INTERNAL_ERROR)
163 #if !defined(OPENSSL_NO_FILENAMES) && !defined(OPENSSL_NO_ERR)
164 || !TEST_int_eq(l, line)
165 || !TEST_str_eq(f, file)
166 #endif
167 || !TEST_str_eq(data, "calling exit()"))
168 return 0;
169 return 1;
170 }
171
test_marks(void)172 static int test_marks(void)
173 {
174 unsigned long mallocfail, shouldnot;
175
176 /* Set an initial error */
177 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
178 mallocfail = ERR_peek_last_error();
179 if (!TEST_ulong_gt(mallocfail, 0))
180 return 0;
181
182 /* Setting and clearing a mark should not affect the error */
183 if (!TEST_true(ERR_set_mark())
184 || !TEST_true(ERR_pop_to_mark())
185 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error())
186 || !TEST_true(ERR_set_mark())
187 || !TEST_true(ERR_clear_last_mark())
188 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error()))
189 return 0;
190
191 /* Test popping errors */
192 if (!TEST_true(ERR_set_mark()))
193 return 0;
194 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
195 if (!TEST_ulong_ne(mallocfail, ERR_peek_last_error())
196 || !TEST_true(ERR_pop_to_mark())
197 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error()))
198 return 0;
199
200 /* Nested marks should also work */
201 if (!TEST_true(ERR_set_mark())
202 || !TEST_true(ERR_set_mark()))
203 return 0;
204 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
205 if (!TEST_ulong_ne(mallocfail, ERR_peek_last_error())
206 || !TEST_true(ERR_pop_to_mark())
207 || !TEST_true(ERR_pop_to_mark())
208 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error()))
209 return 0;
210
211 if (!TEST_true(ERR_set_mark()))
212 return 0;
213 ERR_raise(ERR_LIB_CRYPTO, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
214 shouldnot = ERR_peek_last_error();
215 if (!TEST_ulong_ne(mallocfail, shouldnot)
216 || !TEST_true(ERR_set_mark()))
217 return 0;
218 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
219 if (!TEST_ulong_ne(shouldnot, ERR_peek_last_error())
220 || !TEST_true(ERR_pop_to_mark())
221 || !TEST_ulong_eq(shouldnot, ERR_peek_last_error())
222 || !TEST_true(ERR_pop_to_mark())
223 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error()))
224 return 0;
225
226 /* Setting and clearing a mark should not affect the errors on the stack */
227 if (!TEST_true(ERR_set_mark()))
228 return 0;
229 ERR_raise(ERR_LIB_CRYPTO, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
230 if (!TEST_true(ERR_clear_last_mark())
231 || !TEST_ulong_eq(shouldnot, ERR_peek_last_error()))
232 return 0;
233
234 /*
235 * Popping where no mark has been set should pop everything - but return
236 * a failure result
237 */
238 if (!TEST_false(ERR_pop_to_mark())
239 || !TEST_ulong_eq(0, ERR_peek_last_error()))
240 return 0;
241
242 /* Clearing where there is no mark should fail */
243 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
244 if (!TEST_false(ERR_clear_last_mark())
245 /* "get" the last error to remove it */
246 || !TEST_ulong_eq(mallocfail, ERR_get_error())
247 || !TEST_ulong_eq(0, ERR_peek_last_error()))
248 return 0;
249
250 /*
251 * Setting a mark where there are no errors in the stack should fail.
252 * NOTE: This is somewhat surprising behaviour but is historically how this
253 * function behaves. In practice we typically set marks without first
254 * checking whether there is anything on the stack - but we also don't
255 * tend to check the success of this function. It turns out to work anyway
256 * because although setting a mark with no errors fails, a subsequent call
257 * to ERR_pop_to_mark() or ERR_clear_last_mark() will do the right thing
258 * anyway (even though they will report a failure result).
259 */
260 if (!TEST_false(ERR_set_mark()))
261 return 0;
262
263 ERR_raise(ERR_LIB_CRYPTO, ERR_R_MALLOC_FAILURE);
264 if (!TEST_true(ERR_set_mark()))
265 return 0;
266 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
267 ERR_raise(ERR_LIB_CRYPTO, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
268
269 /* Should be able to "pop" past 2 errors */
270 if (!TEST_true(ERR_pop_to_mark())
271 || !TEST_ulong_eq(mallocfail, ERR_peek_last_error()))
272 return 0;
273
274 if (!TEST_true(ERR_set_mark()))
275 return 0;
276 ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
277 ERR_raise(ERR_LIB_CRYPTO, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
278
279 /* Should be able to "clear" past 2 errors */
280 if (!TEST_true(ERR_clear_last_mark())
281 || !TEST_ulong_eq(shouldnot, ERR_peek_last_error()))
282 return 0;
283
284 /* Clear remaining errors from last test */
285 ERR_clear_error();
286
287 return 1;
288 }
289
test_clear_error(void)290 static int test_clear_error(void)
291 {
292 int flags = -1;
293 const char *data = NULL;
294 int res = 0;
295
296 /* Raise an error with data and clear it */
297 ERR_raise_data(0, 0, "hello %s", "world");
298 ERR_peek_error_data(&data, &flags);
299 if (!TEST_str_eq(data, "hello world")
300 || !TEST_int_eq(flags, ERR_TXT_STRING | ERR_TXT_MALLOCED))
301 goto err;
302 ERR_clear_error();
303
304 /* Raise a new error without data */
305 ERR_raise(0, 0);
306 ERR_peek_error_data(&data, &flags);
307 if (!TEST_str_eq(data, "")
308 || !TEST_int_eq(flags, ERR_TXT_MALLOCED))
309 goto err;
310 ERR_clear_error();
311
312 /* Raise a new error with data */
313 ERR_raise_data(0, 0, "goodbye %s world", "cruel");
314 ERR_peek_error_data(&data, &flags);
315 if (!TEST_str_eq(data, "goodbye cruel world")
316 || !TEST_int_eq(flags, ERR_TXT_STRING | ERR_TXT_MALLOCED))
317 goto err;
318 ERR_clear_error();
319
320 /*
321 * Raise a new error without data to check that the malloced storage
322 * is freed properly
323 */
324 ERR_raise(0, 0);
325 ERR_peek_error_data(&data, &flags);
326 if (!TEST_str_eq(data, "")
327 || !TEST_int_eq(flags, ERR_TXT_MALLOCED))
328 goto err;
329 ERR_clear_error();
330
331 res = 1;
332 err:
333 ERR_clear_error();
334 return res;
335 }
336
setup_tests(void)337 int setup_tests(void)
338 {
339 ADD_TEST(preserves_system_error);
340 ADD_TEST(vdata_appends);
341 ADD_TEST(raised_error);
342 #ifndef OPENSSL_NO_DEPRECATED_3_0
343 ADD_TEST(test_print_error_format);
344 #endif
345 ADD_TEST(test_marks);
346 ADD_TEST(test_clear_error);
347 return 1;
348 }
349
