0ad4db4fad
we regretfully had to remove our git history for licensing reasons Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
274 lines
No EOL
6.6 KiB
C
274 lines
No EOL
6.6 KiB
C
/*
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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//#include <sys/cdefs.h>
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/*
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* Copyright (c) 1987 by Sun Microsystems, Inc.
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*
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* Portions Copyright(C) 1996, Jason Downs. All rights reserved.
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*/
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#include <wintirpc.h>
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#include <sys/types.h>
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//#include <sys/socket.h>
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//#include <netinet/in.h>
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#include <errno.h>
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#include <string.h>
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//#include <unistd.h>
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#include <rpc/rpc.h>
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/*
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* Bind a socket to a privileged IP port
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*/
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int
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bindresvport(sd, sin)
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SOCKET sd;
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struct sockaddr_in *sin;
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{
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return bindresvport_sa(sd, (struct sockaddr *)sin);
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}
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#ifdef __linux__
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#define STARTPORT 600
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#define LOWPORT 512
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#define ENDPORT (IPPORT_RESERVED - 1)
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#define NPORTS (ENDPORT - STARTPORT + 1)
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int
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bindresvport_sa(sd, sa)
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int sd;
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struct sockaddr *sa;
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{
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int res, af;
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struct sockaddr_storage myaddr;
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struct sockaddr_in *sin;
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#ifdef INET6
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struct sockaddr_in6 *sin6;
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#endif
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u_int16_t *portp;
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static u_int16_t port;
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static short startport = STARTPORT;
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socklen_t salen;
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int nports = ENDPORT - startport + 1;
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int endport = ENDPORT;
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int i;
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if (sa == NULL) {
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salen = sizeof(myaddr);
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sa = (struct sockaddr *)&myaddr;
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if (getsockname(sd, (struct sockaddr *)&myaddr, &salen) == -1)
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return -1; /* errno is correctly set */
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af = myaddr.ss_family;
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} else
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af = sa->sa_family;
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switch (af) {
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case AF_INET:
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sin = (struct sockaddr_in *)sa;
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salen = sizeof(struct sockaddr_in);
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port = ntohs(sin->sin_port);
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portp = &sin->sin_port;
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break;
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#ifdef INET6
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case AF_INET6:
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sin6 = (struct sockaddr_in6 *)sa;
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salen = sizeof(struct sockaddr_in6);
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port = ntohs(sin6->sin6_port);
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portp = &sin6->sin6_port;
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break;
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#endif
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default:
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errno = EPFNOSUPPORT;
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return (-1);
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}
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sa->sa_family = af;
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if (port == 0) {
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port = (getpid() % NPORTS) + STARTPORT;
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}
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res = -1;
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errno = EADDRINUSE;
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again:
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for (i = 0; i < nports; ++i) {
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*portp = htons(port++);
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if (port > endport)
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port = startport;
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res = bind(sd, sa, salen);
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if (res >= 0 || errno != EADDRINUSE)
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break;
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}
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if (i == nports && startport != LOWPORT) {
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startport = LOWPORT;
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endport = STARTPORT - 1;
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nports = STARTPORT - LOWPORT;
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port = LOWPORT + port % (STARTPORT - LOWPORT);
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goto again;
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}
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return (res);
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}
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#else
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/*----------------------
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#if defined(_WIN32)
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int
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bindresvport_sa(SOCKET sd, struct sockaddr *sa)
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{
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fprintf(stderr, "Do-nothing bindresvport_sa!\n");
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return 0;
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}
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#else
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-------------------------*/
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#define IP_PORTRANGE 19
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#define IP_PORTRANGE_LOW 2
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/*
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* Bind a socket to a privileged IP port
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*/
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int
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bindresvport_sa(sd, sa)
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SOCKET sd;
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struct sockaddr *sa;
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{
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#ifdef IPV6_PORTRANGE
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int old;
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#endif
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int error, af;
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struct sockaddr_storage myaddr;
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struct sockaddr_in *sin;
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#ifdef INET6
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struct sockaddr_in6 *sin6;
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#endif
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int proto, portrange, portlow;
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u_int16_t *portp;
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socklen_t salen;
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#ifdef _WIN32
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WSAPROTOCOL_INFO proto_info;
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int proto_info_size = sizeof(proto_info);
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#endif
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if (sa == NULL) {
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salen = sizeof(myaddr);
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sa = (struct sockaddr *)&myaddr;
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#ifdef _WIN32
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memset(sa, 0, salen);
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if (error = getsockopt(sd, SOL_SOCKET, SO_PROTOCOL_INFO, (char *)&proto_info, &proto_info_size) == SOCKET_ERROR) {
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int sockerr = WSAGetLastError();
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return -1;
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}
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af = proto_info.iAddressFamily;
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#else
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if (getsockname(sd, sa, &salen) == -1)
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return -1; /* errno is correctly set */
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af = sa->sa_family;
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memset(sa, 0, salen);
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#endif
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} else
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af = sa->sa_family;
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switch (af) {
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case AF_INET:
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proto = IPPROTO_IP;
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portrange = IP_PORTRANGE;
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portlow = IP_PORTRANGE_LOW;
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sin = (struct sockaddr_in *)sa;
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salen = sizeof(struct sockaddr_in);
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portp = &sin->sin_port;
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break;
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#ifdef INET6
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case AF_INET6:
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proto = IPPROTO_IPV6;
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#ifdef IPV6_PORTRANGE
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portrange = IPV6_PORTRANGE;
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portlow = IPV6_PORTRANGE_LOW;
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#endif
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sin6 = (struct sockaddr_in6 *)sa;
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salen = sizeof(struct sockaddr_in6);
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portp = &sin6->sin6_port;
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break;
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#endif /* INET6 */
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default:
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errno = WSAEPFNOSUPPORT;
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return (-1);
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}
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sa->sa_family = (ADDRESS_FAMILY) af;
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#ifdef IPV6_PORTRANGE
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if (*portp == 0) {
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socklen_t oldlen = sizeof(old);
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error = getsockopt(sd, proto, portrange, &old, &oldlen);
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if (error < 0)
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return (error);
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error = setsockopt(sd, proto, portrange, &portlow,
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sizeof(portlow));
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if (error < 0)
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return (error);
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}
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#endif
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error = bind(sd, sa, salen);
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if (error) {
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int err = WSAGetLastError();
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}
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#ifdef IPV6_PORTRANGE
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if (*portp == 0) {
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int saved_errno = errno;
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if (error < 0) {
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if (setsockopt(sd, proto, portrange, &old,
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sizeof(old)) < 0)
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errno = saved_errno;
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return (error);
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}
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if (sa != (struct sockaddr *)&myaddr) {
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/* Hmm, what did the kernel assign? */
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if (getsockname(sd, sa, &salen) < 0)
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errno = saved_errno;
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return (error);
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}
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}
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#endif
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return (error);
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}
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/*
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#endif
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*/
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#endif |