xref: /freebsd/contrib/bearssl/tools/errors.c (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6) 
1 /*
2  * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining
5  * a copy of this software and associated documentation files (the
6  * "Software"), to deal in the Software without restriction, including
7  * without limitation the rights to use, copy, modify, merge, publish,
8  * distribute, sublicense, and/or sell copies of the Software, and to
9  * permit persons to whom the Software is furnished to do so, subject to
10  * the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be
13  * included in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  * SOFTWARE.
23  */
24 
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <stdint.h>
29 #include <errno.h>
30 
31 #include "brssl.h"
32 #include "bearssl.h"
33 
34 static struct {
35 	int err;
36 	const char *name;
37 	const char *comment;
38 } errors[] = {
39 	{
40 		BR_ERR_BAD_PARAM,
41 		"BR_ERR_BAD_PARAM",
42 		"Caller-provided parameter is incorrect."
43 	}, {
44 		BR_ERR_BAD_STATE,
45 		"BR_ERR_BAD_STATE",
46 		"Operation requested by the caller cannot be applied with"
47 		" the current context state (e.g. reading data while"
48 		" outgoing data is waiting to be sent)."
49 	}, {
50 		BR_ERR_UNSUPPORTED_VERSION,
51 		"BR_ERR_UNSUPPORTED_VERSION",
52 		"Incoming protocol or record version is unsupported."
53 	}, {
54 		BR_ERR_BAD_VERSION,
55 		"BR_ERR_BAD_VERSION",
56 		"Incoming record version does not match the expected version."
57 	}, {
58 		BR_ERR_BAD_LENGTH,
59 		"BR_ERR_BAD_LENGTH",
60 		"Incoming record length is invalid."
61 	}, {
62 		BR_ERR_TOO_LARGE,
63 		"BR_ERR_TOO_LARGE",
64 		"Incoming record is too large to be processed, or buffer"
65 		" is too small for the handshake message to send."
66 	}, {
67 		BR_ERR_BAD_MAC,
68 		"BR_ERR_BAD_MAC",
69 		"Decryption found an invalid padding, or the record MAC is"
70 		" not correct."
71 	}, {
72 		BR_ERR_NO_RANDOM,
73 		"BR_ERR_NO_RANDOM",
74 		"No initial entropy was provided, and none can be obtained"
75 		" from the OS."
76 	}, {
77 		BR_ERR_UNKNOWN_TYPE,
78 		"BR_ERR_UNKNOWN_TYPE",
79 		"Incoming record type is unknown."
80 	}, {
81 		BR_ERR_UNEXPECTED,
82 		"BR_ERR_UNEXPECTED",
83 		"Incoming record or message has wrong type with regards to"
84 		" the current engine state."
85 	}, {
86 		BR_ERR_BAD_CCS,
87 		"BR_ERR_BAD_CCS",
88 		"ChangeCipherSpec message from the peer has invalid contents."
89 	}, {
90 		BR_ERR_BAD_ALERT,
91 		"BR_ERR_BAD_ALERT",
92 		"Alert message from the peer has invalid contents"
93 		" (odd length)."
94 	}, {
95 		BR_ERR_BAD_HANDSHAKE,
96 		"BR_ERR_BAD_HANDSHAKE",
97 		"Incoming handshake message decoding failed."
98 	}, {
99 		BR_ERR_OVERSIZED_ID,
100 		"BR_ERR_OVERSIZED_ID",
101 		"ServerHello contains a session ID which is larger than"
102 		" 32 bytes."
103 	}, {
104 		BR_ERR_BAD_CIPHER_SUITE,
105 		"BR_ERR_BAD_CIPHER_SUITE",
106 		"Server wants to use a cipher suite that we did not claim"
107 		" to support. This is also reported if we tried to advertise"
108 		" a cipher suite that we do not support."
109 	}, {
110 		BR_ERR_BAD_COMPRESSION,
111 		"BR_ERR_BAD_COMPRESSION",
112 		"Server wants to use a compression that we did not claim"
113 		" to support."
114 	}, {
115 		BR_ERR_BAD_FRAGLEN,
116 		"BR_ERR_BAD_FRAGLEN",
117 		"Server's max fragment length does not match client's."
118 	}, {
119 		BR_ERR_BAD_SECRENEG,
120 		"BR_ERR_BAD_SECRENEG",
121 		"Secure renegotiation failed."
122 	}, {
123 		BR_ERR_EXTRA_EXTENSION,
124 		"BR_ERR_EXTRA_EXTENSION",
125 		"Server sent an extension type that we did not announce,"
126 		" or used the same extension type several times in a"
127 		" single ServerHello."
128 	}, {
129 		BR_ERR_BAD_SNI,
130 		"BR_ERR_BAD_SNI",
131 		"Invalid Server Name Indication contents (when used by"
132 		" the server, this extension shall be empty)."
133 	}, {
134 		BR_ERR_BAD_HELLO_DONE,
135 		"BR_ERR_BAD_HELLO_DONE",
136 		"Invalid ServerHelloDone from the server (length is not 0)."
137 	}, {
138 		BR_ERR_LIMIT_EXCEEDED,
139 		"BR_ERR_LIMIT_EXCEEDED",
140 		"Internal limit exceeded (e.g. server's public key is too"
141 		" large)."
142 	}, {
143 		BR_ERR_BAD_FINISHED,
144 		"BR_ERR_BAD_FINISHED",
145 		"Finished message from peer does not match the expected"
146 		" value."
147 	}, {
148 		BR_ERR_RESUME_MISMATCH,
149 		"BR_ERR_RESUME_MISMATCH",
150 		"Session resumption attempt with distinct version or cipher"
151 		" suite."
152 	}, {
153 		BR_ERR_INVALID_ALGORITHM,
154 		"BR_ERR_INVALID_ALGORITHM",
155 		"Unsupported or invalid algorithm (ECDHE curve, signature"
156 		" algorithm, hash function)."
157 	}, {
158 		BR_ERR_BAD_SIGNATURE,
159 		"BR_ERR_BAD_SIGNATURE",
160 		"Invalid signature in ServerKeyExchange or"
161 		" CertificateVerify message."
162 	}, {
163 		BR_ERR_WRONG_KEY_USAGE,
164 		"BR_ERR_WRONG_KEY_USAGE",
165 		"Peer's public key does not have the proper type or is"
166 		" not allowed for the requested operation."
167 	}, {
168 		BR_ERR_NO_CLIENT_AUTH,
169 		"BR_ERR_NO_CLIENT_AUTH",
170 		"Client did not send a certificate upon request, or the"
171 		" client certificate could not be validated."
172 	}, {
173 		BR_ERR_IO,
174 		"BR_ERR_IO",
175 		"I/O error or premature close on transport stream."
176 	}, {
177 		BR_ERR_X509_INVALID_VALUE,
178 		"BR_ERR_X509_INVALID_VALUE",
179 		"Invalid value in an ASN.1 structure."
180 	},
181 	{
182 		BR_ERR_X509_TRUNCATED,
183 		"BR_ERR_X509_TRUNCATED",
184 		"Truncated certificate or other ASN.1 object."
185 	},
186 	{
187 		BR_ERR_X509_EMPTY_CHAIN,
188 		"BR_ERR_X509_EMPTY_CHAIN",
189 		"Empty certificate chain (no certificate at all)."
190 	},
191 	{
192 		BR_ERR_X509_INNER_TRUNC,
193 		"BR_ERR_X509_INNER_TRUNC",
194 		"Decoding error: inner element extends beyond outer element"
195 		" size."
196 	},
197 	{
198 		BR_ERR_X509_BAD_TAG_CLASS,
199 		"BR_ERR_X509_BAD_TAG_CLASS",
200 		"Decoding error: unsupported tag class (application or"
201 		" private)."
202 	},
203 	{
204 		BR_ERR_X509_BAD_TAG_VALUE,
205 		"BR_ERR_X509_BAD_TAG_VALUE",
206 		"Decoding error: unsupported tag value."
207 	},
208 	{
209 		BR_ERR_X509_INDEFINITE_LENGTH,
210 		"BR_ERR_X509_INDEFINITE_LENGTH",
211 		"Decoding error: indefinite length."
212 	},
213 	{
214 		BR_ERR_X509_EXTRA_ELEMENT,
215 		"BR_ERR_X509_EXTRA_ELEMENT",
216 		"Decoding error: extraneous element."
217 	},
218 	{
219 		BR_ERR_X509_UNEXPECTED,
220 		"BR_ERR_X509_UNEXPECTED",
221 		"Decoding error: unexpected element."
222 	},
223 	{
224 		BR_ERR_X509_NOT_CONSTRUCTED,
225 		"BR_ERR_X509_NOT_CONSTRUCTED",
226 		"Decoding error: expected constructed element, but is"
227 		" primitive."
228 	},
229 	{
230 		BR_ERR_X509_NOT_PRIMITIVE,
231 		"BR_ERR_X509_NOT_PRIMITIVE",
232 		"Decoding error: expected primitive element, but is"
233 		" constructed."
234 	},
235 	{
236 		BR_ERR_X509_PARTIAL_BYTE,
237 		"BR_ERR_X509_PARTIAL_BYTE",
238 		"Decoding error: BIT STRING length is not multiple of 8."
239 	},
240 	{
241 		BR_ERR_X509_BAD_BOOLEAN,
242 		"BR_ERR_X509_BAD_BOOLEAN",
243 		"Decoding error: BOOLEAN value has invalid length."
244 	},
245 	{
246 		BR_ERR_X509_OVERFLOW,
247 		"BR_ERR_X509_OVERFLOW",
248 		"Decoding error: value is off-limits."
249 	},
250 	{
251 		BR_ERR_X509_BAD_DN,
252 		"BR_ERR_X509_BAD_DN",
253 		"Invalid distinguished name."
254 	},
255 	{
256 		BR_ERR_X509_BAD_TIME,
257 		"BR_ERR_X509_BAD_TIME",
258 		"Invalid date/time representation."
259 	},
260 	{
261 		BR_ERR_X509_UNSUPPORTED,
262 		"BR_ERR_X509_UNSUPPORTED",
263 		"Certificate contains unsupported features that cannot be"
264 		" ignored."
265 	},
266 	{
267 		BR_ERR_X509_LIMIT_EXCEEDED,
268 		"BR_ERR_X509_LIMIT_EXCEEDED",
269 		"Key or signature size exceeds internal limits."
270 	},
271 	{
272 		BR_ERR_X509_WRONG_KEY_TYPE,
273 		"BR_ERR_X509_WRONG_KEY_TYPE",
274 		"Key type does not match that which was expected."
275 	},
276 	{
277 		BR_ERR_X509_BAD_SIGNATURE,
278 		"BR_ERR_X509_BAD_SIGNATURE",
279 		"Signature is invalid."
280 	},
281 	{
282 		BR_ERR_X509_TIME_UNKNOWN,
283 		"BR_ERR_X509_TIME_UNKNOWN",
284 		"Validation time is unknown."
285 	},
286 	{
287 		BR_ERR_X509_EXPIRED,
288 		"BR_ERR_X509_EXPIRED",
289 		"Certificate is expired or not yet valid."
290 	},
291 	{
292 		BR_ERR_X509_DN_MISMATCH,
293 		"BR_ERR_X509_DN_MISMATCH",
294 		"Issuer/Subject DN mismatch in the chain."
295 	},
296 	{
297 		BR_ERR_X509_BAD_SERVER_NAME,
298 		"BR_ERR_X509_BAD_SERVER_NAME",
299 		"Expected server name was not found in the chain."
300 	},
301 	{
302 		BR_ERR_X509_CRITICAL_EXTENSION,
303 		"BR_ERR_X509_CRITICAL_EXTENSION",
304 		"Unknown critical extension in certificate."
305 	},
306 	{
307 		BR_ERR_X509_NOT_CA,
308 		"BR_ERR_X509_NOT_CA",
309 		"Not a CA, or path length constraint violation."
310 	},
311 	{
312 		BR_ERR_X509_FORBIDDEN_KEY_USAGE,
313 		"BR_ERR_X509_FORBIDDEN_KEY_USAGE",
314 		"Key Usage extension prohibits intended usage."
315 	},
316 	{
317 		BR_ERR_X509_WEAK_PUBLIC_KEY,
318 		"BR_ERR_X509_WEAK_PUBLIC_KEY",
319 		"Public key found in certificate is too small."
320 	},
321 	{
322 		BR_ERR_X509_NOT_TRUSTED,
323 		"BR_ERR_X509_NOT_TRUSTED",
324 		"Chain could not be linked to a trust anchor."
325 	},
326 	{ 0, 0, 0 }
327 };
328 
329 /* see brssl.h */
330 const char *
331 find_error_name(int err, const char **comment)
332 {
333 	size_t u;
334 
335 	for (u = 0; errors[u].name; u ++) {
336 		if (errors[u].err == err) {
337 			if (comment != NULL) {
338 				*comment = errors[u].comment;
339 			}
340 			return errors[u].name;
341 		}
342 	}
343 	return NULL;
344 }
345