ssherr.c revision 323134 
1/*	$OpenBSD: ssherr.c,v 1.5 2015/09/13 14:39:16 tim Exp $	*/
2/*
3 * Copyright (c) 2011 Damien Miller
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <errno.h>
19#include <string.h>
20#include "ssherr.h"
21
22const char *
23ssh_err(int n)
24{
25	switch (n) {
26	case SSH_ERR_SUCCESS:
27		return "success";
28	case SSH_ERR_INTERNAL_ERROR:
29		return "unexpected internal error";
30	case SSH_ERR_ALLOC_FAIL:
31		return "memory allocation failed";
32	case SSH_ERR_MESSAGE_INCOMPLETE:
33		return "incomplete message";
34	case SSH_ERR_INVALID_FORMAT:
35		return "invalid format";
36	case SSH_ERR_BIGNUM_IS_NEGATIVE:
37		return "bignum is negative";
38	case SSH_ERR_STRING_TOO_LARGE:
39		return "string is too large";
40	case SSH_ERR_BIGNUM_TOO_LARGE:
41		return "bignum is too large";
42	case SSH_ERR_ECPOINT_TOO_LARGE:
43		return "elliptic curve point is too large";
44	case SSH_ERR_NO_BUFFER_SPACE:
45		return "insufficient buffer space";
46	case SSH_ERR_INVALID_ARGUMENT:
47		return "invalid argument";
48	case SSH_ERR_KEY_BITS_MISMATCH:
49		return "key bits do not match";
50	case SSH_ERR_EC_CURVE_INVALID:
51		return "invalid elliptic curve";
52	case SSH_ERR_KEY_TYPE_MISMATCH:
53		return "key type does not match";
54	case SSH_ERR_KEY_TYPE_UNKNOWN:
55		return "unknown or unsupported key type";
56	case SSH_ERR_EC_CURVE_MISMATCH:
57		return "elliptic curve does not match";
58	case SSH_ERR_EXPECTED_CERT:
59		return "plain key provided where certificate required";
60	case SSH_ERR_KEY_LACKS_CERTBLOB:
61		return "key lacks certificate data";
62	case SSH_ERR_KEY_CERT_UNKNOWN_TYPE:
63		return "unknown/unsupported certificate type";
64	case SSH_ERR_KEY_CERT_INVALID_SIGN_KEY:
65		return "invalid certificate signing key";
66	case SSH_ERR_KEY_INVALID_EC_VALUE:
67		return "invalid elliptic curve value";
68	case SSH_ERR_SIGNATURE_INVALID:
69		return "incorrect signature";
70	case SSH_ERR_LIBCRYPTO_ERROR:
71		return "error in libcrypto";  /* XXX fetch and return */
72	case SSH_ERR_UNEXPECTED_TRAILING_DATA:
73		return "unexpected bytes remain after decoding";
74	case SSH_ERR_SYSTEM_ERROR:
75		return strerror(errno);
76	case SSH_ERR_KEY_CERT_INVALID:
77		return "invalid certificate";
78	case SSH_ERR_AGENT_COMMUNICATION:
79		return "communication with agent failed";
80	case SSH_ERR_AGENT_FAILURE:
81		return "agent refused operation";
82	case SSH_ERR_DH_GEX_OUT_OF_RANGE:
83		return "DH GEX group out of range";
84	case SSH_ERR_DISCONNECTED:
85		return "disconnected";
86	case SSH_ERR_MAC_INVALID:
87		return "message authentication code incorrect";
88	case SSH_ERR_NO_CIPHER_ALG_MATCH:
89		return "no matching cipher found";
90	case SSH_ERR_NO_MAC_ALG_MATCH:
91		return "no matching MAC found";
92	case SSH_ERR_NO_COMPRESS_ALG_MATCH:
93		return "no matching compression method found";
94	case SSH_ERR_NO_KEX_ALG_MATCH:
95		return "no matching key exchange method found";
96	case SSH_ERR_NO_HOSTKEY_ALG_MATCH:
97		return "no matching host key type found";
98	case SSH_ERR_PROTOCOL_MISMATCH:
99		return "protocol version mismatch";
100	case SSH_ERR_NO_PROTOCOL_VERSION:
101		return "could not read protocol version";
102	case SSH_ERR_NO_HOSTKEY_LOADED:
103		return "could not load host key";
104	case SSH_ERR_NEED_REKEY:
105		return "rekeying not supported by peer";
106	case SSH_ERR_PASSPHRASE_TOO_SHORT:
107		return "passphrase is too short (minimum five characters)";
108	case SSH_ERR_FILE_CHANGED:
109		return "file changed while reading";
110	case SSH_ERR_KEY_UNKNOWN_CIPHER:
111		return "key encrypted using unsupported cipher";
112	case SSH_ERR_KEY_WRONG_PASSPHRASE:
113		return "incorrect passphrase supplied to decrypt private key";
114	case SSH_ERR_KEY_BAD_PERMISSIONS:
115		return "bad permissions";
116	case SSH_ERR_KEY_CERT_MISMATCH:
117		return "certificate does not match key";
118	case SSH_ERR_KEY_NOT_FOUND:
119		return "key not found";
120	case SSH_ERR_AGENT_NOT_PRESENT:
121		return "agent not present";
122	case SSH_ERR_AGENT_NO_IDENTITIES:
123		return "agent contains no identities";
124	case SSH_ERR_BUFFER_READ_ONLY:
125		return "internal error: buffer is read-only";
126	case SSH_ERR_KRL_BAD_MAGIC:
127		return "KRL file has invalid magic number";
128	case SSH_ERR_KEY_REVOKED:
129		return "Key is revoked";
130	case SSH_ERR_CONN_CLOSED:
131		return "Connection closed";
132	case SSH_ERR_CONN_TIMEOUT:
133		return "Connection timed out";
134	case SSH_ERR_CONN_CORRUPT:
135		return "Connection corrupted";
136	case SSH_ERR_PROTOCOL_ERROR:
137		return "Protocol error";
138	default:
139		return "unknown error";
140	}
141}
142