1/*	$NetBSD: ctl_p.c,v 1.1.1.2 2012/09/09 16:08:01 christos Exp $	*/
2
3#if !defined(lint) && !defined(SABER)
4static const char rcsid[] = "Id: ctl_p.c,v 1.4 2005/04/27 04:56:35 sra Exp ";
5#endif /* not lint */
6
7/*
8 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
9 * Copyright (c) 1998,1999 by Internet Software Consortium.
10 *
11 * Permission to use, copy, modify, and distribute this software for any
12 * purpose with or without fee is hereby granted, provided that the above
13 * copyright notice and this permission notice appear in all copies.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
16 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
18 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
20 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
21 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 */
23
24/* Extern. */
25
26#include "port_before.h"
27
28#include <sys/param.h>
29#include <sys/file.h>
30#include <sys/socket.h>
31#include <sys/un.h>
32
33#include <netinet/in.h>
34#include <arpa/nameser.h>
35#include <arpa/inet.h>
36
37#include <errno.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <time.h>
42
43#include <isc/assertions.h>
44#include <isc/eventlib.h>
45#include <isc/logging.h>
46#include <isc/memcluster.h>
47#include <isc/ctl.h>
48
49#include "ctl_p.h"
50
51#include "port_after.h"
52
53/* Constants. */
54
55const char * const ctl_sevnames[] = {
56	"debug", "warning", "error"
57};
58
59/* Public. */
60
61/*%
62 * ctl_logger()
63 *	if ctl_startup()'s caller didn't specify a logger, this one
64 *	is used.  this pollutes stderr with all kinds of trash so it will
65 *	probably never be used in real applications.
66 */
67void
68ctl_logger(enum ctl_severity severity, const char *format, ...) {
69	va_list ap;
70	static const char me[] = "ctl_logger";
71
72	fprintf(stderr, "%s(%s): ", me, ctl_sevnames[severity]);
73	va_start(ap, format);
74	vfprintf(stderr, format, ap);
75	va_end(ap);
76	fputc('\n', stderr);
77}
78
79int
80ctl_bufget(struct ctl_buf *buf, ctl_logfunc logger) {
81	static const char me[] = "ctl_bufget";
82
83	REQUIRE(!allocated_p(*buf) && buf->used == 0U);
84	buf->text = memget(MAX_LINELEN);
85	if (!allocated_p(*buf)) {
86		(*logger)(ctl_error, "%s: getmem: %s", me, strerror(errno));
87		return (-1);
88	}
89	buf->used = 0;
90	return (0);
91}
92
93void
94ctl_bufput(struct ctl_buf *buf) {
95
96	REQUIRE(allocated_p(*buf));
97	memput(buf->text, MAX_LINELEN);
98	buf->text = NULL;
99	buf->used = 0;
100}
101
102const char *
103ctl_sa_ntop(const struct sockaddr *sa,
104	    char *buf, size_t size,
105	    ctl_logfunc logger)
106{
107	static const char me[] = "ctl_sa_ntop";
108	static const char punt[] = "[0].-1";
109	char tmp[INET6_ADDRSTRLEN];
110
111	switch (sa->sa_family) {
112	case AF_INET6: {
113		const struct sockaddr_in6 *in6 =
114					(const struct sockaddr_in6 *) sa;
115
116		if (inet_ntop(in6->sin6_family, &in6->sin6_addr, tmp, sizeof tmp)
117		    == NULL) {
118			(*logger)(ctl_error, "%s: inet_ntop(%u %04x): %s",
119				  me, in6->sin6_family,
120				  in6->sin6_port, strerror(errno));
121			return (punt);
122		}
123		if (strlen(tmp) + sizeof "[].65535" > size) {
124			(*logger)(ctl_error, "%s: buffer overflow", me);
125			return (punt);
126		}
127		(void) sprintf(buf, "[%s].%u", tmp, ntohs(in6->sin6_port));
128		return (buf);
129	    }
130	case AF_INET: {
131		const struct sockaddr_in *in =
132					      (const struct sockaddr_in *) sa;
133
134		if (inet_ntop(in->sin_family, &in->sin_addr, tmp, sizeof tmp)
135		    == NULL) {
136			(*logger)(ctl_error, "%s: inet_ntop(%u %04x %08x): %s",
137				  me, in->sin_family,
138				  in->sin_port, in->sin_addr.s_addr,
139				  strerror(errno));
140			return (punt);
141		}
142		if (strlen(tmp) + sizeof "[].65535" > size) {
143			(*logger)(ctl_error, "%s: buffer overflow", me);
144			return (punt);
145		}
146		(void) sprintf(buf, "[%s].%u", tmp, ntohs(in->sin_port));
147		return (buf);
148	    }
149#ifndef NO_SOCKADDR_UN
150	case AF_UNIX: {
151		const struct sockaddr_un *un =
152					      (const struct sockaddr_un *) sa;
153		unsigned int x = sizeof un->sun_path;
154
155		if (x > size)
156			x = size;
157		strncpy(buf, un->sun_path, x - 1);
158		buf[x - 1] = '\0';
159		return (buf);
160	    }
161#endif
162	default:
163		return (punt);
164	}
165}
166
167void
168ctl_sa_copy(const struct sockaddr *src, struct sockaddr *dst) {
169	switch (src->sa_family) {
170	case AF_INET6:
171		*((struct sockaddr_in6 *)dst) =
172					 *((const struct sockaddr_in6 *)src);
173		break;
174	case AF_INET:
175		*((struct sockaddr_in *)dst) =
176					  *((const struct sockaddr_in *)src);
177		break;
178#ifndef NO_SOCKADDR_UN
179	case AF_UNIX:
180		*((struct sockaddr_un *)dst) =
181					  *((const struct sockaddr_un *)src);
182		break;
183#endif
184	default:
185		*dst = *src;
186		break;
187	}
188}
189
190/*! \file */
191