Wrapper of NetworkSocketAPI for BSD sockets on POSIX systems
Dependents: BSDInterfaceTests HelloBSDInterface
BSDInterface.cpp@2:0978e139e1c5, 2016-02-28 (annotated)
- Committer:
- Christopher Haster
- Date:
- Sun Feb 28 10:32:22 2016 -0600
- Revision:
- 2:0978e139e1c5
- Parent:
- 1:29c61c1420c8
- Child:
- 3:eabc4ea66a64
Fixed link level naming conflict with sockets
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 |
1:29c61c1420c8 | 32 | const char *BSDInterface::getMACAddress() |
Christopher Haster |
1:29c61c1420c8 | 33 | { |
Christopher Haster |
1:29c61c1420c8 | 34 | static char mac_address[NS_MAC_SIZE] = "\0"; |
Christopher Haster |
1:29c61c1420c8 | 35 | if (mac_address[0]) { |
Christopher Haster |
1:29c61c1420c8 | 36 | return mac_address; |
geky | 0:d92b89886434 | 37 | } |
geky | 0:d92b89886434 | 38 | |
Christopher Haster |
1:29c61c1420c8 | 39 | struct ifreq ifr; |
Christopher Haster |
1:29c61c1420c8 | 40 | struct ifconf ifc; |
Christopher Haster |
1:29c61c1420c8 | 41 | char buffer[1024]; |
geky | 0:d92b89886434 | 42 | |
Christopher Haster |
2:0978e139e1c5 | 43 | int sock = ::socket(AF_INET, SOCK_DGRAM, 0); |
Christopher Haster |
1:29c61c1420c8 | 44 | if (sock < 0) { |
Christopher Haster |
1:29c61c1420c8 | 45 | return 0; |
geky | 0:d92b89886434 | 46 | } |
geky | 0:d92b89886434 | 47 | |
Christopher Haster |
1:29c61c1420c8 | 48 | ifc.ifc_buf = buffer; |
Christopher Haster |
1:29c61c1420c8 | 49 | ifc.ifc_len = sizeof buffer; |
Christopher Haster |
1:29c61c1420c8 | 50 | if (ioctl(sock, SIOCGIFCONF, &ifc) < 0) { |
Christopher Haster |
1:29c61c1420c8 | 51 | return 0; |
geky | 0:d92b89886434 | 52 | } |
geky | 0:d92b89886434 | 53 | |
Christopher Haster |
1:29c61c1420c8 | 54 | for (int i = 0; i < ifc.ifc_len; i++) { |
Christopher Haster |
1:29c61c1420c8 | 55 | strcpy(ifr.ifr_name, ifc.ifc_req[i].ifr_name); |
Christopher Haster |
1:29c61c1420c8 | 56 | |
Christopher Haster |
1:29c61c1420c8 | 57 | if (ioctl(sock, SIOCGIFFLAGS, &ifr) == 0 |
Christopher Haster |
1:29c61c1420c8 | 58 | && !(ifr.ifr_flags & IFF_LOOPBACK) |
Christopher Haster |
1:29c61c1420c8 | 59 | && ioctl(sock, SIOCGIFHWADDR, &ifr) == 0) { |
geky | 0:d92b89886434 | 60 | |
Christopher Haster |
1:29c61c1420c8 | 61 | sprintf(mac_address, "%02x:%02x:%02x:%02x:%02x:%02x", |
Christopher Haster |
2:0978e139e1c5 | 62 | (unsigned char)ifr.ifr_hwaddr.sa_data[0], |
Christopher Haster |
2:0978e139e1c5 | 63 | (unsigned char)ifr.ifr_hwaddr.sa_data[1], |
Christopher Haster |
2:0978e139e1c5 | 64 | (unsigned char)ifr.ifr_hwaddr.sa_data[2], |
Christopher Haster |
2:0978e139e1c5 | 65 | (unsigned char)ifr.ifr_hwaddr.sa_data[3], |
Christopher Haster |
2:0978e139e1c5 | 66 | (unsigned char)ifr.ifr_hwaddr.sa_data[4], |
Christopher Haster |
2:0978e139e1c5 | 67 | (unsigned char)ifr.ifr_hwaddr.sa_data[5]); |
Christopher Haster |
1:29c61c1420c8 | 68 | return mac_address; |
geky | 0:d92b89886434 | 69 | } |
geky | 0:d92b89886434 | 70 | } |
geky | 0:d92b89886434 | 71 | |
geky | 0:d92b89886434 | 72 | return 0; |
geky | 0:d92b89886434 | 73 | } |
geky | 0:d92b89886434 | 74 | |
geky | 0:d92b89886434 | 75 | |
Christopher Haster |
2:0978e139e1c5 | 76 | int32_t BSDInterface::getHostByName(const char *name, char *ip) |
Christopher Haster |
2:0978e139e1c5 | 77 | { |
Christopher Haster |
2:0978e139e1c5 | 78 | struct hostent *host = gethostbyname(name); |
Christopher Haster |
2:0978e139e1c5 | 79 | if (!host || host->h_addrtype != AF_INET) { |
Christopher Haster |
2:0978e139e1c5 | 80 | return NS_ERROR_DNS_FAILURE; |
Christopher Haster |
2:0978e139e1c5 | 81 | } |
Christopher Haster |
2:0978e139e1c5 | 82 | |
Christopher Haster |
2:0978e139e1c5 | 83 | strcpy(ip, inet_ntoa(*(struct in_addr *)host->h_addr)); |
Christopher Haster |
2:0978e139e1c5 | 84 | return 0; |
Christopher Haster |
2:0978e139e1c5 | 85 | } |
Christopher Haster |
2:0978e139e1c5 | 86 | |
Christopher Haster |
2:0978e139e1c5 | 87 | |
Christopher Haster |
1:29c61c1420c8 | 88 | /** BSDSocket class |
Christopher Haster |
1:29c61c1420c8 | 89 | * Implementation of the SocketInterface for BSD |
geky | 0:d92b89886434 | 90 | */ |
Christopher Haster |
1:29c61c1420c8 | 91 | class BSDSocket : public SocketInterface |
geky | 0:d92b89886434 | 92 | { |
geky | 0:d92b89886434 | 93 | public: |
Christopher Haster |
1:29c61c1420c8 | 94 | BSDSocket(int fd) : fd(fd) {} |
geky | 0:d92b89886434 | 95 | |
geky | 0:d92b89886434 | 96 | // Implementation of SocketInterface |
geky | 0:d92b89886434 | 97 | virtual int32_t open(const char *ip, uint16_t port); |
geky | 0:d92b89886434 | 98 | virtual int32_t close(); |
geky | 0:d92b89886434 | 99 | |
geky | 0:d92b89886434 | 100 | virtual int32_t send(const void *data, uint32_t size); |
geky | 0:d92b89886434 | 101 | virtual int32_t recv(void *data, uint32_t size); |
geky | 0:d92b89886434 | 102 | |
geky | 0:d92b89886434 | 103 | int fd; |
geky | 0:d92b89886434 | 104 | }; |
geky | 0:d92b89886434 | 105 | |
geky | 0:d92b89886434 | 106 | |
Christopher Haster |
1:29c61c1420c8 | 107 | SocketInterface *BSDInterface::createSocket(socket_protocol_t proto) |
geky | 0:d92b89886434 | 108 | { |
geky | 0:d92b89886434 | 109 | int type = (proto == SOCK_UDP) ? SOCK_DGRAM : SOCK_STREAM; |
Christopher Haster |
2:0978e139e1c5 | 110 | int fd = ::socket(AF_INET, type, 0); |
geky | 0:d92b89886434 | 111 | if (fd < 0) { |
geky | 0:d92b89886434 | 112 | return 0; |
geky | 0:d92b89886434 | 113 | } |
geky | 0:d92b89886434 | 114 | |
Christopher Haster |
1:29c61c1420c8 | 115 | return new BSDSocket(fd); |
geky | 0:d92b89886434 | 116 | } |
geky | 0:d92b89886434 | 117 | |
Christopher Haster |
1:29c61c1420c8 | 118 | void BSDInterface::destroySocket(SocketInterface *socket) |
geky | 0:d92b89886434 | 119 | { |
Christopher Haster |
2:0978e139e1c5 | 120 | ::close(((BSDSocket*)socket)->fd); |
geky | 0:d92b89886434 | 121 | delete socket; |
geky | 0:d92b89886434 | 122 | } |
geky | 0:d92b89886434 | 123 | |
geky | 0:d92b89886434 | 124 | |
Christopher Haster |
1:29c61c1420c8 | 125 | // UDP SocketInterface implementation |
Christopher Haster |
1:29c61c1420c8 | 126 | int32_t BSDSocket::open(const char *ip, uint16_t port) |
geky | 0:d92b89886434 | 127 | { |
Christopher Haster |
1:29c61c1420c8 | 128 | struct sockaddr_in host; |
geky | 0:d92b89886434 | 129 | memset(&host, 0, sizeof host); |
geky | 0:d92b89886434 | 130 | host.sin_family = AF_INET; |
geky | 0:d92b89886434 | 131 | host.sin_port = htons(port); |
Christopher Haster |
1:29c61c1420c8 | 132 | inet_pton(AF_INET, ip, &host.sin_addr); |
geky | 0:d92b89886434 | 133 | |
Christopher Haster |
2:0978e139e1c5 | 134 | if (::connect(fd, (struct sockaddr *)&host, sizeof host) < 0) { |
geky | 0:d92b89886434 | 135 | return NS_ERROR_NO_CONNECTION; |
geky | 0:d92b89886434 | 136 | } |
geky | 0:d92b89886434 | 137 | |
geky | 0:d92b89886434 | 138 | return 0; |
geky | 0:d92b89886434 | 139 | } |
geky | 0:d92b89886434 | 140 | |
Christopher Haster |
1:29c61c1420c8 | 141 | int32_t BSDSocket::close() |
geky | 0:d92b89886434 | 142 | { |
geky | 0:d92b89886434 | 143 | return 0; |
geky | 0:d92b89886434 | 144 | } |
geky | 0:d92b89886434 | 145 | |
Christopher Haster |
1:29c61c1420c8 | 146 | int32_t BSDSocket::send(const void *data, uint32_t size) |
geky | 0:d92b89886434 | 147 | { |
Christopher Haster |
1:29c61c1420c8 | 148 | if (::send(fd, data, size, 0) < 0) { |
Christopher Haster |
1:29c61c1420c8 | 149 | return NS_ERROR_DEVICE_ERROR; |
geky | 0:d92b89886434 | 150 | } |
geky | 0:d92b89886434 | 151 | |
geky | 0:d92b89886434 | 152 | return 0; |
geky | 0:d92b89886434 | 153 | } |
geky | 0:d92b89886434 | 154 | |
Christopher Haster |
1:29c61c1420c8 | 155 | int32_t BSDSocket::recv(void *data, uint32_t size) |
geky | 0:d92b89886434 | 156 | { |
Christopher Haster |
1:29c61c1420c8 | 157 | int ret = ::recv(fd, data, size, MSG_DONTWAIT); |
geky | 0:d92b89886434 | 158 | |
geky | 0:d92b89886434 | 159 | if (ret > 0) { |
geky | 0:d92b89886434 | 160 | return ret; |
Christopher Haster |
1:29c61c1420c8 | 161 | } else if (errno == EAGAIN) { |
geky | 0:d92b89886434 | 162 | return 0; |
geky | 0:d92b89886434 | 163 | } else { |
geky | 0:d92b89886434 | 164 | return NS_ERROR_DEVICE_ERROR; |
geky | 0:d92b89886434 | 165 | } |
geky | 0:d92b89886434 | 166 | } |
geky | 0:d92b89886434 | 167 | |
geky | 0:d92b89886434 | 168 |