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28f540f4 | 1 | /* |
28f540f4 RM |
2 | * Copyright (c) 1987, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
e2ec9b4d | 4 | * |
28f540f4 RM |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
28f540f4 RM |
13 | * 4. Neither the name of the University nor the names of its contributors |
14 | * may be used to endorse or promote products derived from this software | |
15 | * without specific prior written permission. | |
e2ec9b4d | 16 | * |
28f540f4 RM |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
e685e07d UD |
28 | */ |
29 | ||
30 | /* | |
31 | * Portions Copyright (c) 1996-1999 by Internet Software Consortium. | |
cbd3dceb | 32 | * |
28f540f4 RM |
33 | * Permission to use, copy, modify, and distribute this software for any |
34 | * purpose with or without fee is hereby granted, provided that the above | |
e685e07d | 35 | * copyright notice and this permission notice appear in all copies. |
cbd3dceb | 36 | * |
e685e07d UD |
37 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
38 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES | |
39 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE | |
40 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
28f540f4 RM |
41 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
42 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
43 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
44 | * SOFTWARE. | |
28f540f4 RM |
45 | */ |
46 | ||
df21c858 | 47 | #include <sys/types.h> |
28f540f4 RM |
48 | #include <sys/param.h> |
49 | #include <sys/uio.h> | |
e685e07d UD |
50 | |
51 | #include <netinet/in.h> | |
52 | #include <arpa/nameser.h> | |
53 | ||
28f540f4 | 54 | #include <netdb.h> |
e685e07d UD |
55 | #include <resolv.h> |
56 | #include <string.h> | |
57 | #include <unistd.h> | |
58 | ||
4360eafd | 59 | #include <libintl.h> |
8dab36a1 | 60 | #include <not-cancel.h> |
28f540f4 | 61 | |
e1545188 | 62 | const char *const h_errlist[] = { |
cbd3dceb RM |
63 | N_("Resolver Error 0 (no error)"), |
64 | N_("Unknown host"), /* 1 HOST_NOT_FOUND */ | |
65 | N_("Host name lookup failure"), /* 2 TRY_AGAIN */ | |
66 | N_("Unknown server error"), /* 3 NO_RECOVERY */ | |
67 | N_("No address associated with name"), /* 4 NO_ADDRESS */ | |
28f540f4 | 68 | }; |
e1545188 | 69 | const int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] }; |
28f540f4 | 70 | |
28f540f4 RM |
71 | /* |
72 | * herror -- | |
73 | * print the error indicated by the h_errno value. | |
74 | */ | |
75 | void | |
e685e07d UD |
76 | herror(const char *s) { |
77 | struct iovec iov[4], *v = iov; | |
28f540f4 | 78 | |
e685e07d UD |
79 | if (s != NULL && *s != '\0') { |
80 | v->iov_base = (/*noconst*/ char *)s; | |
28f540f4 RM |
81 | v->iov_len = strlen(s); |
82 | v++; | |
bf8c5424 | 83 | v->iov_base = (char *) ": "; |
28f540f4 RM |
84 | v->iov_len = 2; |
85 | v++; | |
86 | } | |
3d61b63c | 87 | v->iov_base = (char *)hstrerror(h_errno); |
28f540f4 RM |
88 | v->iov_len = strlen(v->iov_base); |
89 | v++; | |
bf8c5424 | 90 | v->iov_base = (char *) "\n"; |
28f540f4 | 91 | v->iov_len = 1; |
19926de9 | 92 | __writev_nocancel_nostatus(STDERR_FILENO, iov, (v - iov) + 1); |
28f540f4 RM |
93 | } |
94 | ||
e685e07d UD |
95 | /* |
96 | * hstrerror -- | |
97 | * return the string associated with a given "host" errno value. | |
98 | */ | |
3d61b63c | 99 | const char * |
e685e07d | 100 | hstrerror(int err) { |
28f540f4 | 101 | if (err < 0) |
cbd3dceb | 102 | return _("Resolver internal error"); |
28f540f4 | 103 | else if (err < h_nerr) |
cbd3dceb RM |
104 | return _(h_errlist[err]); |
105 | return _("Unknown resolver error"); | |
28f540f4 | 106 | } |
e2ec9b4d | 107 | libc_hidden_def (hstrerror) |