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