1 #include <sys/cdefs.h> 2 #include "namespace.h" 3 #include <minix/config.h> 4 5 #include <errno.h> 6 #include <fcntl.h> 7 #include <stdio.h> 8 #include <stdlib.h> 9 #include <unistd.h> 10 #include <string.h> 11 #include <sys/ioctl.h> 12 #include <sys/socket.h> 13 #include <sys/types.h> 14 #include <sys/stat.h> 15 #include <netinet/in.h> 16 17 #include <net/gen/in.h> 18 #include <net/gen/tcp.h> 19 #include <net/gen/tcp_io.h> 20 #include <net/gen/udp.h> 21 #include <net/gen/udp_io.h> 22 23 #include <minix/const.h> 24 25 #define DEBUG 0 26 27 static int _tcp_connect(int sock, const struct sockaddr *address, 28 socklen_t address_len, nwio_tcpconf_t *tcpconfp); 29 static int _udp_connect(int sock, const struct sockaddr *address, 30 socklen_t address_len, nwio_udpopt_t *udpoptp); 31 static int _uds_connect(int sock, const struct sockaddr *address, 32 socklen_t address_len); 33 34 int connect(int sock, const struct sockaddr *address, 35 socklen_t address_len) 36 { 37 int r; 38 nwio_tcpconf_t tcpconf; 39 nwio_udpopt_t udpopt; 40 41 r= ioctl(sock, NWIOGTCPCONF, &tcpconf); 42 if (r != -1 || errno != ENOTTY) 43 { 44 if (r == -1) 45 { 46 /* Bad file descriptor */ 47 return -1; 48 } 49 return _tcp_connect(sock, address, address_len, &tcpconf); 50 } 51 52 r= ioctl(sock, NWIOGUDPOPT, &udpopt); 53 if (r != -1 || errno != ENOTTY) 54 { 55 if (r == -1) 56 { 57 /* Bad file descriptor */ 58 return -1; 59 } 60 return _udp_connect(sock, address, address_len, &udpopt); 61 } 62 63 r= _uds_connect(sock, address, address_len); 64 if (r != -1 || (errno != ENOTTY && errno != EAFNOSUPPORT)) 65 { 66 if (r == -1) 67 { 68 /* Bad file descriptor */ 69 return -1; 70 } 71 72 return r; 73 } 74 75 #if DEBUG 76 fprintf(stderr, "connect: not implemented for fd %d\n", sock); 77 #endif 78 errno= ENOSYS; 79 return -1; 80 } 81 82 static int _tcp_connect(int sock, const struct sockaddr *address, 83 socklen_t address_len, nwio_tcpconf_t *tcpconfp) 84 { 85 int r; 86 struct sockaddr_in *sinp; 87 nwio_tcpconf_t tcpconf; 88 nwio_tcpcl_t tcpcl; 89 90 if (address_len != sizeof(*sinp)) 91 { 92 errno= EINVAL; 93 return -1; 94 } 95 sinp= (struct sockaddr_in *) __UNCONST(address); 96 if (sinp->sin_family != AF_INET) 97 { 98 errno= EINVAL; 99 return -1; 100 } 101 tcpconf.nwtc_flags= NWTC_SET_RA | NWTC_SET_RP; 102 if ((tcpconfp->nwtc_flags & NWTC_LOCPORT_MASK) == NWTC_LP_UNSET) 103 tcpconf.nwtc_flags |= NWTC_LP_SEL; 104 tcpconf.nwtc_remaddr= sinp->sin_addr.s_addr; 105 tcpconf.nwtc_remport= sinp->sin_port; 106 107 if (ioctl(sock, NWIOSTCPCONF, &tcpconf) == -1) 108 { 109 /* Ignore EISCONN error. The NWIOTCPCONN ioctl will get the 110 * right error. 111 */ 112 if (errno != EISCONN) 113 return -1; 114 } 115 116 tcpcl.nwtcl_flags= TCF_DEFAULT; 117 118 r= fcntl(sock, F_GETFL); 119 if (r == 1) 120 return -1; 121 if (r & O_NONBLOCK) 122 tcpcl.nwtcl_flags |= TCF_ASYNCH; 123 124 r= ioctl(sock, NWIOTCPCONN, &tcpcl); 125 return r; 126 } 127 128 static int _udp_connect(int sock, const struct sockaddr *address, 129 socklen_t address_len, nwio_udpopt_t *udpoptp) 130 { 131 int r; 132 struct sockaddr_in *sinp; 133 nwio_udpopt_t udpopt; 134 135 if (address == NULL) 136 { 137 /* Unset remote address */ 138 udpopt.nwuo_flags= NWUO_RP_ANY | NWUO_RA_ANY | NWUO_RWDATALL; 139 140 r= ioctl(sock, NWIOSUDPOPT, &udpopt); 141 return r; 142 } 143 144 if (address_len != sizeof(*sinp)) 145 { 146 errno= EINVAL; 147 return -1; 148 } 149 sinp= (struct sockaddr_in *) __UNCONST(address); 150 if (sinp->sin_family != AF_INET) 151 { 152 errno= EINVAL; 153 return -1; 154 } 155 udpopt.nwuo_flags= NWUO_RP_SET | NWUO_RA_SET | NWUO_RWDATONLY; 156 if ((udpoptp->nwuo_flags & NWUO_LOCPORT_MASK) == NWUO_LP_ANY) 157 udpopt.nwuo_flags |= NWUO_LP_SEL; 158 udpopt.nwuo_remaddr= sinp->sin_addr.s_addr; 159 udpopt.nwuo_remport= sinp->sin_port; 160 161 r= ioctl(sock, NWIOSUDPOPT, &udpopt); 162 return r; 163 } 164 165 static int _uds_connect(int sock, const struct sockaddr *address, 166 socklen_t address_len) 167 { 168 169 if (address == NULL) { 170 errno = EFAULT; 171 return -1; 172 } 173 174 /* perform the connect */ 175 return ioctl(sock, NWIOSUDSCONN, (void *) __UNCONST(address)); 176 } 177