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git.ipfire.org Git - thirdparty/squid.git/blob - tools/purge/convert.cc
4 // Author: Jens-S. V?ckler <voeckler@rvs.uni-hannover.de>
9 // (c) 1997 Lehrgebiet Rechnernetze und Verteilte Systeme
10 // Universit?t Hannover, Germany
12 // Permission to use, copy, modify, distribute, and sell this software
13 // and its documentation for any purpose is hereby granted without fee,
14 // provided that (i) the above copyright notices and this permission
15 // notice appear in all copies of the software and related documentation,
16 // and (ii) the names of the Lehrgebiet Rechnernetze und Verteilte
17 // Systeme and the University of Hannover may not be used in any
18 // advertising or publicity relating to the software without the
19 // specific, prior written permission of Lehrgebiet Rechnernetze und
20 // Verteilte Systeme and the University of Hannover.
22 // THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
24 // WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
26 // IN NO EVENT SHALL THE LEHRGEBIET RECHNERNETZE UND VERTEILTE SYSTEME OR
27 // THE UNIVERSITY OF HANNOVER BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
28 // INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
29 // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT
30 // ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY,
31 // ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
34 // Revision 1.3 2000/06/20 09:43:01 voeckler
35 // added FreeBSD related fixes and support.
37 // Revision 1.2 1999/01/19 11:00:50 voeckler
38 // Linux glibc2 fixes for sockets.
40 // Revision 1.1 1998/08/13 21:38:04 voeckler
44 #if defined(__GNUC__) || defined(__GNUG__)
45 #pragma implementation
50 #include <netinet/in.h>
51 #include <arpa/inet.h>
57 #define SA struct sockaddr
60 static const char* RCS_ID
=
64 my_inet_ntoa( const struct in_addr
& a
, HostAddress output
)
65 // purpose: thread-safely convert IPv4 address -> ASCII representation
66 // paramtr: a (IN): networked representation of IPv4 address
67 // buffer (OUT): storage area to store representation into.
68 // returns: pointer to buffer
69 // goodies: INADDR_ANY will be converted to "*"
71 if ( a
.s_addr
== ntohl(INADDR_ANY
) ) {
72 // 'default' or '*' or ...
76 // ANSI C++ forbids casting to an array type, nag, nag, nag...
77 unsigned char s
[sizeof(a
.s_addr
)];
78 memcpy( s
, &a
.s_addr
, sizeof(a
.s_addr
) );
80 sprintf( output
, "%d.%d.%d.%d", s
[0], s
[1], s
[2], s
[3] );
86 my_sock_ntoa( const struct sockaddr_in
& a
, SockAddress buffer
)
87 // purpose: thread-safely convert IPv4 socket pair into ASCII rep.
88 // paramtr: a (IN): sockaddr_in address
89 // buffer (OUT): storage area to store representation into.
90 // returns: pointer to buffer
93 sprintf( buffer
, "%s:%u",
94 my_inet_ntoa(a
.sin_addr
,host
), ntohs(a
.sin_port
) );
99 my_sock_fd2a( int fd
, SockAddress buffer
, bool peer
)
100 // purpose: thread-safely convert IPv4 socket FD associated address
101 // to ASCII representation
102 // paramtr: fd (IN): open socket FD
103 // buffer (OUT): storage area
104 // peer (IN): true, use peer (remote) socket pair
105 // false, use own (local) socket pair
106 // returns: NULL in case of error, or pointer to buffer otherwise
107 // Refer to errno in case of error (usually unconnected fd...)
109 struct sockaddr_in socket
;
110 SOCKLEN len
= sizeof(socket
);
112 if ( (peer
? getpeername( fd
, (SA
*) &socket
, &len
) :
113 getsockname( fd
, (SA
*) &socket
, &len
)) == -1 )
116 return my_sock_ntoa( socket
, buffer
);
120 convertHostname( const char* host
, in_addr
& dst
)
121 // purpose: convert a numeric or symbolic hostname
122 // paramtr: host (IN): host description to convert
123 // dst (OUT): the internet address in network byteorder.
124 // returns: -1 in case of error, see h_errno; 0 otherwise.
126 if ( host
== 0 ) return -1;
127 unsigned long int h
= inet_addr(host
);
128 if ( h
== 0xFFFFFFFF && strncmp(host
,"255.255.255.255",15) != 0 ) {
130 struct hostent
* dns
= gethostbyname(host
);
131 if ( dns
== NULL
) return -1;
132 else memcpy( &dst
.s_addr
, dns
->h_addr
, dns
->h_length
);
141 convertPortname( const char* port
, unsigned short& dst
)
142 // purpose: convert a numeric or symbolic port number
143 // paramtr: port (IN): port description to convert
144 // dst (OUT): port number in network byteorder.
145 // returns: -1 in case of error, see errno; 0 otherwise.
147 int p
= strtoul(port
,0,0);
151 struct servent
* proto
= getservbyname( port
, "tcp" );
152 if ( proto
== NULL
) return -1;
153 else dst
= proto
->s_port
;