Wrapper of NetworkSocketAPI for BSD sockets on POSIX systems
Dependents: BSDInterfaceTests HelloBSDInterface
BSDInterface.cpp@5:1af10f9d9404, 2016-02-25 (annotated)
- Committer:
- Christopher Haster
- Date:
- Thu Feb 25 19:10:07 2016 -0600
- Revision:
- 5:1af10f9d9404
- Parent:
- 4:28479a7d15ad
- Child:
- 6:363dd62309cf
Moved BSDSocket definition into private class in BSDInterface
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Christopher Haster |
1:29c61c1420c8 | 1 | /* BSD implementation of NetworkInterfaceAPI |
geky | 0:d92b89886434 | 2 | * Copyright (c) 2015 ARM Limited |
geky | 0:d92b89886434 | 3 | * |
geky | 0:d92b89886434 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
geky | 0:d92b89886434 | 5 | * you may not use this file except in compliance with the License. |
geky | 0:d92b89886434 | 6 | * You may obtain a copy of the License at |
geky | 0:d92b89886434 | 7 | * |
geky | 0:d92b89886434 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
geky | 0:d92b89886434 | 9 | * |
geky | 0:d92b89886434 | 10 | * Unless required by applicable law or agreed to in writing, software |
geky | 0:d92b89886434 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
geky | 0:d92b89886434 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
geky | 0:d92b89886434 | 13 | * See the License for the specific language governing permissions and |
geky | 0:d92b89886434 | 14 | * limitations under the License. |
geky | 0:d92b89886434 | 15 | */ |
geky | 0:d92b89886434 | 16 | |
Christopher Haster |
1:29c61c1420c8 | 17 | #include "BSDInterface.h" |
geky | 0:d92b89886434 | 18 | |
Christopher Haster |
1:29c61c1420c8 | 19 | #include <sys/ioctl.h> |
Christopher Haster |
2:0978e139e1c5 | 20 | #include <netdb.h> |
Christopher Haster |
1:29c61c1420c8 | 21 | #include <net/if.h> |
Christopher Haster |
1:29c61c1420c8 | 22 | #include <unistd.h> |
Christopher Haster |
1:29c61c1420c8 | 23 | #include <netinet/in.h> |
Christopher Haster |
1:29c61c1420c8 | 24 | #include <sys/socket.h> |
Christopher Haster |
1:29c61c1420c8 | 25 | #include <arpa/inet.h> |
Christopher Haster |
1:29c61c1420c8 | 26 | #include <errno.h> |
Christopher Haster |
1:29c61c1420c8 | 27 | #include <string.h> |
Christopher Haster |
1:29c61c1420c8 | 28 | #include <stdio.h> |
geky | 0:d92b89886434 | 29 | |
geky | 0:d92b89886434 | 30 | |
Christopher Haster |
1:29c61c1420c8 | 31 | // BSDInterface implementation |
Christopher Haster |
3:eabc4ea66a64 | 32 | static bool ifctl(struct ifreq *ifr, unsigned req) { |
Christopher Haster |
1:29c61c1420c8 | 33 | struct ifconf ifc; |
Christopher Haster |
1:29c61c1420c8 | 34 | char buffer[1024]; |
geky | 0:d92b89886434 | 35 | |
Christopher Haster |
2:0978e139e1c5 | 36 | int sock = ::socket(AF_INET, SOCK_DGRAM, 0); |
Christopher Haster |
1:29c61c1420c8 | 37 | if (sock < 0) { |
Christopher Haster |
1:29c61c1420c8 | 38 | return 0; |
geky | 0:d92b89886434 | 39 | } |
geky | 0:d92b89886434 | 40 | |
Christopher Haster |
1:29c61c1420c8 | 41 | ifc.ifc_buf = buffer; |
Christopher Haster |
1:29c61c1420c8 | 42 | ifc.ifc_len = sizeof buffer; |
Christopher Haster |
1:29c61c1420c8 | 43 | if (ioctl(sock, SIOCGIFCONF, &ifc) < 0) { |
Christopher Haster |
3:eabc4ea66a64 | 44 | ::close(sock); |
Christopher Haster |
3:eabc4ea66a64 | 45 | return false; |
geky | 0:d92b89886434 | 46 | } |
geky | 0:d92b89886434 | 47 | |
Christopher Haster |
1:29c61c1420c8 | 48 | for (int i = 0; i < ifc.ifc_len; i++) { |
Christopher Haster |
3:eabc4ea66a64 | 49 | strcpy(ifr->ifr_name, ifc.ifc_req[i].ifr_name); |
geky | 0:d92b89886434 | 50 | |
Christopher Haster |
3:eabc4ea66a64 | 51 | if (ioctl(sock, SIOCGIFFLAGS, ifr) == 0 |
Christopher Haster |
3:eabc4ea66a64 | 52 | && !(ifr->ifr_flags & IFF_LOOPBACK) |
Christopher Haster |
3:eabc4ea66a64 | 53 | && ioctl(sock, req, ifr) == 0) { |
Christopher Haster |
3:eabc4ea66a64 | 54 | ::close(sock); |
Christopher Haster |
3:eabc4ea66a64 | 55 | return true; |
geky | 0:d92b89886434 | 56 | } |
geky | 0:d92b89886434 | 57 | } |
geky | 0:d92b89886434 | 58 | |
Christopher Haster |
3:eabc4ea66a64 | 59 | ::close(sock); |
Christopher Haster |
3:eabc4ea66a64 | 60 | return false; |
Christopher Haster |
3:eabc4ea66a64 | 61 | } |
Christopher Haster |
3:eabc4ea66a64 | 62 | |
Christopher Haster |
3:eabc4ea66a64 | 63 | const char *BSDInterface::getIPAddress() |
Christopher Haster |
3:eabc4ea66a64 | 64 | { |
Christopher Haster |
3:eabc4ea66a64 | 65 | static char ip_address[NS_IP_SIZE] = "\0"; |
Christopher Haster |
3:eabc4ea66a64 | 66 | if (ip_address[0]) { |
Christopher Haster |
3:eabc4ea66a64 | 67 | return ip_address; |
Christopher Haster |
3:eabc4ea66a64 | 68 | } |
Christopher Haster |
3:eabc4ea66a64 | 69 | |
Christopher Haster |
3:eabc4ea66a64 | 70 | struct ifreq ifr; |
Christopher Haster |
3:eabc4ea66a64 | 71 | if (!ifctl(&ifr, SIOCGIFADDR)) { |
Christopher Haster |
3:eabc4ea66a64 | 72 | return 0; |
Christopher Haster |
3:eabc4ea66a64 | 73 | } |
Christopher Haster |
3:eabc4ea66a64 | 74 | |
Christopher Haster |
3:eabc4ea66a64 | 75 | struct in_addr addr = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr; |
Christopher Haster |
3:eabc4ea66a64 | 76 | strcpy(ip_address, inet_ntoa(addr)); |
Christopher Haster |
3:eabc4ea66a64 | 77 | return ip_address; |
Christopher Haster |
3:eabc4ea66a64 | 78 | } |
Christopher Haster |
3:eabc4ea66a64 | 79 | |
Christopher Haster |
3:eabc4ea66a64 | 80 | const char *BSDInterface::getMACAddress() |
Christopher Haster |
3:eabc4ea66a64 | 81 | { |
Christopher Haster |
3:eabc4ea66a64 | 82 | static char mac_address[NS_MAC_SIZE] = "\0"; |
Christopher Haster |
3:eabc4ea66a64 | 83 | if (mac_address[0]) { |
Christopher Haster |
3:eabc4ea66a64 | 84 | return mac_address; |
Christopher Haster |
3:eabc4ea66a64 | 85 | } |
Christopher Haster |
3:eabc4ea66a64 | 86 | |
Christopher Haster |
3:eabc4ea66a64 | 87 | struct ifreq ifr; |
Christopher Haster |
3:eabc4ea66a64 | 88 | if (!ifctl(&ifr, SIOCGIFHWADDR)) { |
Christopher Haster |
3:eabc4ea66a64 | 89 | return 0; |
Christopher Haster |
3:eabc4ea66a64 | 90 | } |
Christopher Haster |
3:eabc4ea66a64 | 91 | |
Christopher Haster |
3:eabc4ea66a64 | 92 | sprintf(mac_address, "%02x:%02x:%02x:%02x:%02x:%02x", |
Christopher Haster |
3:eabc4ea66a64 | 93 | (unsigned char)ifr.ifr_hwaddr.sa_data[0], |
Christopher Haster |
3:eabc4ea66a64 | 94 | (unsigned char)ifr.ifr_hwaddr.sa_data[1], |
Christopher Haster |
3:eabc4ea66a64 | 95 | (unsigned char)ifr.ifr_hwaddr.sa_data[2], |
Christopher Haster |
3:eabc4ea66a64 | 96 | (unsigned char)ifr.ifr_hwaddr.sa_data[3], |
Christopher Haster |
3:eabc4ea66a64 | 97 | (unsigned char)ifr.ifr_hwaddr.sa_data[4], |
Christopher Haster |
3:eabc4ea66a64 | 98 | (unsigned char)ifr.ifr_hwaddr.sa_data[5]); |
Christopher Haster |
3:eabc4ea66a64 | 99 | return mac_address; |
geky | 0:d92b89886434 | 100 | } |
geky | 0:d92b89886434 | 101 | |
Christopher Haster |
2:0978e139e1c5 | 102 | int32_t BSDInterface::getHostByName(const char *name, char *ip) |
Christopher Haster |
2:0978e139e1c5 | 103 | { |
Christopher Haster |
2:0978e139e1c5 | 104 | struct hostent *host = gethostbyname(name); |
Christopher Haster |
2:0978e139e1c5 | 105 | if (!host || host->h_addrtype != AF_INET) { |
Christopher Haster |
2:0978e139e1c5 | 106 | return NS_ERROR_DNS_FAILURE; |
Christopher Haster |
2:0978e139e1c5 | 107 | } |
Christopher Haster |
2:0978e139e1c5 | 108 | |
Christopher Haster |
2:0978e139e1c5 | 109 | strcpy(ip, inet_ntoa(*(struct in_addr *)host->h_addr)); |
Christopher Haster |
2:0978e139e1c5 | 110 | return 0; |
Christopher Haster |
2:0978e139e1c5 | 111 | } |
Christopher Haster |
2:0978e139e1c5 | 112 | |
Christopher Haster |
4:28479a7d15ad | 113 | SocketInterface *BSDInterface::createSocket(ns_protocol_t proto) |
geky | 0:d92b89886434 | 114 | { |
Christopher Haster |
4:28479a7d15ad | 115 | int type = (proto == NS_UDP) ? SOCK_DGRAM : SOCK_STREAM; |
Christopher Haster |
2:0978e139e1c5 | 116 | int fd = ::socket(AF_INET, type, 0); |
geky | 0:d92b89886434 | 117 | if (fd < 0) { |
geky | 0:d92b89886434 | 118 | return 0; |
geky | 0:d92b89886434 | 119 | } |
geky | 0:d92b89886434 | 120 | |
Christopher Haster |
1:29c61c1420c8 | 121 | return new BSDSocket(fd); |
geky | 0:d92b89886434 | 122 | } |
geky | 0:d92b89886434 | 123 | |
Christopher Haster |
1:29c61c1420c8 | 124 | void BSDInterface::destroySocket(SocketInterface *socket) |
geky | 0:d92b89886434 | 125 | { |
Christopher Haster |
2:0978e139e1c5 | 126 | ::close(((BSDSocket*)socket)->fd); |
geky | 0:d92b89886434 | 127 | delete socket; |
geky | 0:d92b89886434 | 128 | } |
geky | 0:d92b89886434 | 129 | |
geky | 0:d92b89886434 | 130 | |
Christopher Haster |
5:1af10f9d9404 | 131 | // BSDSocket implementation |
Christopher Haster |
5:1af10f9d9404 | 132 | int32_t BSDInterface::BSDSocket::open(const char *ip, uint16_t port) |
geky | 0:d92b89886434 | 133 | { |
Christopher Haster |
1:29c61c1420c8 | 134 | struct sockaddr_in host; |
geky | 0:d92b89886434 | 135 | memset(&host, 0, sizeof host); |
geky | 0:d92b89886434 | 136 | host.sin_family = AF_INET; |
geky | 0:d92b89886434 | 137 | host.sin_port = htons(port); |
Christopher Haster |
1:29c61c1420c8 | 138 | inet_pton(AF_INET, ip, &host.sin_addr); |
geky | 0:d92b89886434 | 139 | |
Christopher Haster |
2:0978e139e1c5 | 140 | if (::connect(fd, (struct sockaddr *)&host, sizeof host) < 0) { |
geky | 0:d92b89886434 | 141 | return NS_ERROR_NO_CONNECTION; |
geky | 0:d92b89886434 | 142 | } |
geky | 0:d92b89886434 | 143 | |
geky | 0:d92b89886434 | 144 | return 0; |
geky | 0:d92b89886434 | 145 | } |
geky | 0:d92b89886434 | 146 | |
Christopher Haster |
5:1af10f9d9404 | 147 | int32_t BSDInterface::BSDSocket::close() |
geky | 0:d92b89886434 | 148 | { |
geky | 0:d92b89886434 | 149 | return 0; |
geky | 0:d92b89886434 | 150 | } |
geky | 0:d92b89886434 | 151 | |
Christopher Haster |
5:1af10f9d9404 | 152 | int32_t BSDInterface::BSDSocket::send(const void *data, uint32_t size) |
geky | 0:d92b89886434 | 153 | { |
Christopher Haster |
1:29c61c1420c8 | 154 | if (::send(fd, data, size, 0) < 0) { |
Christopher Haster |
1:29c61c1420c8 | 155 | return NS_ERROR_DEVICE_ERROR; |
geky | 0:d92b89886434 | 156 | } |
geky | 0:d92b89886434 | 157 | |
geky | 0:d92b89886434 | 158 | return 0; |
geky | 0:d92b89886434 | 159 | } |
geky | 0:d92b89886434 | 160 | |
Christopher Haster |
5:1af10f9d9404 | 161 | int32_t BSDInterface::BSDSocket::recv(void *data, uint32_t size) |
geky | 0:d92b89886434 | 162 | { |
Christopher Haster |
1:29c61c1420c8 | 163 | int ret = ::recv(fd, data, size, MSG_DONTWAIT); |
geky | 0:d92b89886434 | 164 | |
geky | 0:d92b89886434 | 165 | if (ret > 0) { |
geky | 0:d92b89886434 | 166 | return ret; |
Christopher Haster |
1:29c61c1420c8 | 167 | } else if (errno == EAGAIN) { |
geky | 0:d92b89886434 | 168 | return 0; |
geky | 0:d92b89886434 | 169 | } else { |
geky | 0:d92b89886434 | 170 | return NS_ERROR_DEVICE_ERROR; |
geky | 0:d92b89886434 | 171 | } |
geky | 0:d92b89886434 | 172 | } |
geky | 0:d92b89886434 | 173 | |
geky | 0:d92b89886434 | 174 |