1 /*
2 * Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright Nokia 2007-2019
4 * Copyright Siemens AG 2015-2019
5 *
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12 #include <string.h>
13 #include <openssl/cmp_util.h>
14 #include "cmp_local.h" /* just for decls of internal functions defined here */
15 #include <openssl/cmperr.h>
16 #include <openssl/err.h> /* should be implied by cmperr.h */
17 #include <openssl/x509v3.h>
18
19 /*
20 * use trace API for CMP-specific logging, prefixed by "CMP " and severity
21 */
22
OSSL_CMP_log_open(void)23 int OSSL_CMP_log_open(void) /* is designed to be idempotent */
24 {
25 #ifdef OPENSSL_NO_TRACE
26 return 1;
27 #else
28 # ifndef OPENSSL_NO_STDIO
29 BIO *bio = BIO_new_fp(stdout, BIO_NOCLOSE);
30
31 if (bio != NULL && OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, bio))
32 return 1;
33 BIO_free(bio);
34 # endif
35 ERR_raise(ERR_LIB_CMP, CMP_R_NO_STDIO);
36 return 0;
37 #endif
38 }
39
OSSL_CMP_log_close(void)40 void OSSL_CMP_log_close(void) /* is designed to be idempotent */
41 {
42 (void)OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, NULL);
43 }
44
45 /* return >= 0 if level contains logging level, possibly preceded by "CMP " */
46 #define max_level_len 5 /* = max length of the below strings, e.g., "EMERG" */
parse_level(const char * level)47 static OSSL_CMP_severity parse_level(const char *level)
48 {
49 const char *end_level = strchr(level, ':');
50 int len;
51 char level_copy[max_level_len + 1];
52
53 if (end_level == NULL)
54 return -1;
55
56 if (HAS_PREFIX(level, OSSL_CMP_LOG_PREFIX))
57 level += strlen(OSSL_CMP_LOG_PREFIX);
58 len = end_level - level;
59 if (len > max_level_len)
60 return -1;
61 OPENSSL_strlcpy(level_copy, level, len + 1);
62 return
63 strcmp(level_copy, "EMERG") == 0 ? OSSL_CMP_LOG_EMERG :
64 strcmp(level_copy, "ALERT") == 0 ? OSSL_CMP_LOG_ALERT :
65 strcmp(level_copy, "CRIT") == 0 ? OSSL_CMP_LOG_CRIT :
66 strcmp(level_copy, "ERROR") == 0 ? OSSL_CMP_LOG_ERR :
67 strcmp(level_copy, "WARN") == 0 ? OSSL_CMP_LOG_WARNING :
68 strcmp(level_copy, "NOTE") == 0 ? OSSL_CMP_LOG_NOTICE :
69 strcmp(level_copy, "INFO") == 0 ? OSSL_CMP_LOG_INFO :
70 strcmp(level_copy, "DEBUG") == 0 ? OSSL_CMP_LOG_DEBUG :
71 -1;
72 }
73
ossl_cmp_log_parse_metadata(const char * buf,OSSL_CMP_severity * level,char ** func,char ** file,int * line)74 const char *ossl_cmp_log_parse_metadata(const char *buf,
75 OSSL_CMP_severity *level,
76 char **func, char **file, int *line)
77 {
78 const char *p_func = buf;
79 const char *p_file = buf == NULL ? NULL : strchr(buf, ':');
80 const char *p_level = buf;
81 const char *msg = buf;
82
83 *level = -1;
84 *func = NULL;
85 *file = NULL;
86 *line = 0;
87
88 if (p_file != NULL) {
89 const char *p_line = strchr(++p_file, ':');
90
91 if ((*level = parse_level(buf)) < 0 && p_line != NULL) {
92 /* check if buf contains location info and logging level */
93 char *p_level_tmp = (char *)p_level;
94 const long line_number = strtol(++p_line, &p_level_tmp, 10);
95
96 p_level = p_level_tmp;
97 if (p_level > p_line && *(p_level++) == ':') {
98 if ((*level = parse_level(p_level)) >= 0) {
99 *func = OPENSSL_strndup(p_func, p_file - 1 - p_func);
100 *file = OPENSSL_strndup(p_file, p_line - 1 - p_file);
101 /* no real problem if OPENSSL_strndup() returns NULL */
102 *line = (int)line_number;
103 msg = strchr(p_level, ':');
104 if (msg != NULL && *++msg == ' ')
105 msg++;
106 }
107 }
108 }
109 }
110 return msg;
111 }
112
113 #define UNKNOWN_FUNC "(unknown function)" /* the default for OPENSSL_FUNC */
114 /*
115 * substitute fallback if component/function name is NULL or empty or contains
116 * just pseudo-information "(unknown function)" due to -pedantic and macros.h
117 */
improve_location_name(const char * func,const char * fallback)118 static const char *improve_location_name(const char *func, const char *fallback)
119 {
120 if (fallback == NULL)
121 return func == NULL ? UNKNOWN_FUNC : func;
122
123 return func == NULL || *func == '\0' || strcmp(func, UNKNOWN_FUNC) == 0
124 ? fallback : func;
125 }
126
OSSL_CMP_print_to_bio(BIO * bio,const char * component,const char * file,int line,OSSL_CMP_severity level,const char * msg)127 int OSSL_CMP_print_to_bio(BIO *bio, const char *component, const char *file,
128 int line, OSSL_CMP_severity level, const char *msg)
129 {
130 const char *level_string =
131 level == OSSL_CMP_LOG_EMERG ? "EMERG" :
132 level == OSSL_CMP_LOG_ALERT ? "ALERT" :
133 level == OSSL_CMP_LOG_CRIT ? "CRIT" :
134 level == OSSL_CMP_LOG_ERR ? "error" :
135 level == OSSL_CMP_LOG_WARNING ? "warning" :
136 level == OSSL_CMP_LOG_NOTICE ? "NOTE" :
137 level == OSSL_CMP_LOG_INFO ? "info" :
138 level == OSSL_CMP_LOG_DEBUG ? "DEBUG" : "(unknown level)";
139
140 #ifndef NDEBUG
141 if (BIO_printf(bio, "%s:%s:%d:", improve_location_name(component, "CMP"),
142 file, line) < 0)
143 return 0;
144 #endif
145 return BIO_printf(bio, OSSL_CMP_LOG_PREFIX"%s: %s\n",
146 level_string, msg) >= 0;
147 }
148
149 #define ERR_PRINT_BUF_SIZE 4096
150 /* this is similar to ERR_print_errors_cb, but uses the CMP-specific cb type */
OSSL_CMP_print_errors_cb(OSSL_CMP_log_cb_t log_fn)151 void OSSL_CMP_print_errors_cb(OSSL_CMP_log_cb_t log_fn)
152 {
153 unsigned long err;
154 char msg[ERR_PRINT_BUF_SIZE];
155 const char *file = NULL, *func = NULL, *data = NULL;
156 int line, flags;
157
158 while ((err = ERR_get_error_all(&file, &line, &func, &data, &flags)) != 0) {
159 const char *component =
160 improve_location_name(func, ERR_lib_error_string(err));
161 unsigned long reason = ERR_GET_REASON(err);
162 const char *rs = NULL;
163 char rsbuf[256];
164
165 #ifndef OPENSSL_NO_ERR
166 if (ERR_SYSTEM_ERROR(err)) {
167 if (openssl_strerror_r(reason, rsbuf, sizeof(rsbuf)))
168 rs = rsbuf;
169 } else {
170 rs = ERR_reason_error_string(err);
171 }
172 #endif
173 if (rs == NULL) {
174 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", reason);
175 rs = rsbuf;
176 }
177 if (data != NULL && (flags & ERR_TXT_STRING) != 0)
178 BIO_snprintf(msg, sizeof(msg), "%s:%s", rs, data);
179 else
180 BIO_snprintf(msg, sizeof(msg), "%s", rs);
181
182 if (log_fn == NULL) {
183 #ifndef OPENSSL_NO_STDIO
184 BIO *bio = BIO_new_fp(stderr, BIO_NOCLOSE);
185
186 if (bio != NULL) {
187 OSSL_CMP_print_to_bio(bio, component, file, line,
188 OSSL_CMP_LOG_ERR, msg);
189 BIO_free(bio);
190 }
191 #else
192 /* ERR_raise(..., CMP_R_NO_STDIO) would make no sense here */
193 #endif
194 } else {
195 if (log_fn(component, file, line, OSSL_CMP_LOG_ERR, msg) <= 0)
196 break; /* abort outputting the error report */
197 }
198 }
199 }
200
ossl_cmp_X509_STORE_add1_certs(X509_STORE * store,STACK_OF (X509)* certs,int only_self_signed)201 int ossl_cmp_X509_STORE_add1_certs(X509_STORE *store, STACK_OF(X509) *certs,
202 int only_self_signed)
203 {
204 int i;
205
206 if (store == NULL) {
207 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
208 return 0;
209 }
210 if (certs == NULL)
211 return 1;
212 for (i = 0; i < sk_X509_num(certs); i++) {
213 X509 *cert = sk_X509_value(certs, i);
214
215 if (!only_self_signed || X509_self_signed(cert, 0) == 1)
216 if (!X509_STORE_add_cert(store, cert)) /* ups cert ref counter */
217 return 0;
218 }
219 return 1;
220 }
221
ossl_cmp_sk_ASN1_UTF8STRING_push_str(STACK_OF (ASN1_UTF8STRING)* sk,const char * text,int len)222 int ossl_cmp_sk_ASN1_UTF8STRING_push_str(STACK_OF(ASN1_UTF8STRING) *sk,
223 const char *text, int len)
224 {
225 ASN1_UTF8STRING *utf8string;
226
227 if (!ossl_assert(sk != NULL && text != NULL))
228 return 0;
229 if ((utf8string = ASN1_UTF8STRING_new()) == NULL)
230 return 0;
231 if (!ASN1_STRING_set(utf8string, text, len))
232 goto err;
233 if (!sk_ASN1_UTF8STRING_push(sk, utf8string))
234 goto err;
235 return 1;
236
237 err:
238 ASN1_UTF8STRING_free(utf8string);
239 return 0;
240 }
241
ossl_cmp_asn1_octet_string_set1(ASN1_OCTET_STRING ** tgt,const ASN1_OCTET_STRING * src)242 int ossl_cmp_asn1_octet_string_set1(ASN1_OCTET_STRING **tgt,
243 const ASN1_OCTET_STRING *src)
244 {
245 ASN1_OCTET_STRING *new;
246
247 if (tgt == NULL) {
248 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
249 return 0;
250 }
251 if (*tgt == src) /* self-assignment */
252 return 1;
253
254 if (src != NULL) {
255 if ((new = ASN1_OCTET_STRING_dup(src)) == NULL)
256 return 0;
257 } else {
258 new = NULL;
259 }
260
261 ASN1_OCTET_STRING_free(*tgt);
262 *tgt = new;
263 return 1;
264 }
265
ossl_cmp_asn1_octet_string_set1_bytes(ASN1_OCTET_STRING ** tgt,const unsigned char * bytes,int len)266 int ossl_cmp_asn1_octet_string_set1_bytes(ASN1_OCTET_STRING **tgt,
267 const unsigned char *bytes, int len)
268 {
269 ASN1_OCTET_STRING *new = NULL;
270
271 if (tgt == NULL) {
272 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
273 return 0;
274 }
275 if (bytes != NULL) {
276 if ((new = ASN1_OCTET_STRING_new()) == NULL
277 || !(ASN1_OCTET_STRING_set(new, bytes, len))) {
278 ASN1_OCTET_STRING_free(new);
279 return 0;
280 }
281 }
282
283 ASN1_OCTET_STRING_free(*tgt);
284 *tgt = new;
285 return 1;
286 }
287
