153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/gen/in.h>
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#include <net/gen/tcp.h>
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#include <net/gen/tcp_io.h>
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#include <net/gen/udp.h>
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#include <net/gen/udp_io.h>
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#define DEBUG 0
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static int _tcp_bind(int socket, const struct sockaddr *address,
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socklen_t address_len, nwio_tcpconf_t *tcpconfp);
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static int _udp_bind(int socket, const struct sockaddr *address,
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socklen_t address_len, nwio_udpopt_t *udpoptp);
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int bind(int socket, const struct sockaddr *address, socklen_t address_len)
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{
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int r;
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nwio_tcpconf_t tcpconf;
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nwio_udpopt_t udpopt;
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r= ioctl(socket, NWIOGTCPCONF, &tcpconf);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
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{
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if (r == -1)
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return r;
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r= _tcp_bind(socket, address, address_len, &tcpconf);
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#if DEBUG
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if (r == -1)
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{
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int t_errno= errno;
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fprintf(stderr, "bind(tcp) failed: %s\n",
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strerror(errno));
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errno= t_errno;
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}
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#endif
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return r;
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}
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r= ioctl(socket, NWIOGUDPOPT, &udpopt);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
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{
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if (r == -1)
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return r;
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return _udp_bind(socket, address, address_len, &udpopt);
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}
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#if DEBUG
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fprintf(stderr, "bind: not implemented for fd %d\n", socket);
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#endif
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errno= ENOSYS;
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return -1;
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}
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static int _tcp_bind(int socket, const struct sockaddr *address,
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socklen_t address_len, nwio_tcpconf_t *tcpconfp)
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{
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int r;
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nwio_tcpconf_t tcpconf;
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struct sockaddr_in *sinp;
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sinp= (struct sockaddr_in *)address;
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if (sinp->sin_family != AF_INET || address_len != sizeof(*sinp))
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{
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#if DEBUG
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fprintf(stderr, "bind(tcp): sin_family = %d, len = %d\n",
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sinp->sin_family, address_len);
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#endif
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errno= EAFNOSUPPORT;
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return -1;
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}
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if (sinp->sin_addr.s_addr != INADDR_ANY &&
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sinp->sin_addr.s_addr != tcpconfp->nwtc_locaddr)
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{
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errno= EADDRNOTAVAIL;
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return -1;
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}
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tcpconf.nwtc_flags= 0;
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if (sinp->sin_port == 0)
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tcpconf.nwtc_flags |= NWTC_LP_SEL;
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else
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{
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tcpconf.nwtc_flags |= NWTC_LP_SET;
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tcpconf.nwtc_locport= sinp->sin_port;
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}
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r= ioctl(socket, NWIOSTCPCONF, &tcpconf);
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return r;
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}
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static int _udp_bind(int socket, const struct sockaddr *address,
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socklen_t address_len, nwio_udpopt_t *udpoptp)
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{
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int r;
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unsigned long curr_flags;
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nwio_udpopt_t udpopt;
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struct sockaddr_in *sinp;
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sinp= (struct sockaddr_in *)address;
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if (sinp->sin_family != AF_INET || address_len != sizeof(*sinp))
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{
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#if DEBUG
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fprintf(stderr, "bind(udp): sin_family = %d, len = %d\n",
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sinp->sin_family, address_len);
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#endif
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errno= EAFNOSUPPORT;
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return -1;
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}
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if (sinp->sin_addr.s_addr != INADDR_ANY &&
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sinp->sin_addr.s_addr != udpoptp->nwuo_locaddr)
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{
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errno= EADDRNOTAVAIL;
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return -1;
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}
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udpopt.nwuo_flags= 0;
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if (sinp->sin_port == 0)
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udpopt.nwuo_flags |= NWUO_LP_SEL;
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else
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{
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udpopt.nwuo_flags |= NWUO_LP_SET;
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udpopt.nwuo_locport= sinp->sin_port;
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}
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curr_flags= udpoptp->nwuo_flags;
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if (!(curr_flags & NWUO_ACC_MASK))
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udpopt.nwuo_flags |= NWUO_EXCL;
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if (!(curr_flags & (NWUO_EN_LOC|NWUO_DI_LOC)))
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udpopt.nwuo_flags |= NWUO_EN_LOC;
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if (!(curr_flags & (NWUO_EN_BROAD|NWUO_DI_BROAD)))
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udpopt.nwuo_flags |= NWUO_EN_BROAD;
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if (!(curr_flags & (NWUO_RP_SET|NWUO_RP_ANY)))
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udpopt.nwuo_flags |= NWUO_RP_ANY;
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if (!(curr_flags & (NWUO_RA_SET|NWUO_RA_ANY)))
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udpopt.nwuo_flags |= NWUO_RA_ANY;
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if (!(curr_flags & (NWUO_RWDATONLY|NWUO_RWDATALL)))
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udpopt.nwuo_flags |= NWUO_RWDATALL;
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if (!(curr_flags & (NWUO_EN_IPOPT|NWUO_DI_IPOPT)))
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udpopt.nwuo_flags |= NWUO_DI_IPOPT;
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r= ioctl(socket, NWIOSUDPOPT, &udpopt);
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return r;
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}
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