|
| 1 | +#include <node_net2.h> |
| 2 | +#include <v8.h> |
| 3 | + |
| 4 | +#include <node.h> |
| 5 | + |
| 6 | +#include <string.h> |
| 7 | + |
| 8 | +#include <sys/types.h> |
| 9 | +#include <sys/socket.h> |
| 10 | +#include <sys/un.h> |
| 11 | +#include <unistd.h> |
| 12 | +#include <fcntl.h> |
| 13 | +#include <arpa/inet.h> /* inet_pton */ |
| 14 | + |
| 15 | +#include <errno.h> |
| 16 | + |
| 17 | + |
| 18 | + |
| 19 | +namespace node { |
| 20 | + |
| 21 | +using namespace v8; |
| 22 | + |
| 23 | +static Persistent<String> errno_symbol; |
| 24 | +static Persistent<String> syscall_symbol; |
| 25 | + |
| 26 | +static inline Local<Value> ErrnoException(int errorno, const char *syscall, const char *msg = "") { |
| 27 | + if (!msg[0]) msg = strerror(errorno); |
| 28 | + Local<Value> e = Exception::Error(String::NewSymbol(msg)); |
| 29 | + Local<Object> obj = e->ToObject(); |
| 30 | + obj->Set(errno_symbol, Integer::New(errorno)); |
| 31 | + obj->Set(syscall_symbol, String::NewSymbol(syscall)); |
| 32 | + return e; |
| 33 | +} |
| 34 | + |
| 35 | +// Creates a new non-blocking socket fd |
| 36 | +// t.socket("TCP"); |
| 37 | +// t.socket("UNIX"); |
| 38 | +// t.socket("UDP"); |
| 39 | +static Handle<Value> Socket(const Arguments& args) { |
| 40 | + HandleScope scope; |
| 41 | + |
| 42 | + // default to TCP |
| 43 | + int domain = PF_INET6; |
| 44 | + int type = SOCK_STREAM; |
| 45 | + |
| 46 | + if (args[0]->IsString()) { |
| 47 | + String::Utf8Value t(args[0]->ToString()); |
| 48 | + if (0 == strcasecmp(*t, "TCP")) { |
| 49 | + domain = PF_INET6; |
| 50 | + type = SOCK_STREAM; |
| 51 | + } else if (0 == strcasecmp(*t, "UDP")) { |
| 52 | + domain = PF_INET6; |
| 53 | + type = SOCK_DGRAM; |
| 54 | + } else if (0 == strcasecmp(*t, "UNIX")) { |
| 55 | + domain = PF_UNIX; |
| 56 | + type = SOCK_STREAM; |
| 57 | + } else { |
| 58 | + return ThrowException(Exception::Error( |
| 59 | + String::New("Unknown socket type."))); |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + int fd = socket(domain, type, 0); |
| 64 | + |
| 65 | + if (fd < 0) return ThrowException(ErrnoException(errno, "socket")); |
| 66 | + |
| 67 | + int fcntl_errno; |
| 68 | + |
| 69 | + int flags = fcntl(fd, F_GETFL, 0); |
| 70 | + if (flags == -1) { |
| 71 | + fcntl_errno = errno; |
| 72 | + close(fd); |
| 73 | + return ThrowException(ErrnoException(fcntl_errno, "fcntl")); |
| 74 | + } |
| 75 | + |
| 76 | + flags |= O_NONBLOCK; |
| 77 | + |
| 78 | + if (fcntl(fd, F_SETFL, flags) == -1) { |
| 79 | + fcntl_errno = errno; |
| 80 | + close(fd); |
| 81 | + return ThrowException(ErrnoException(fcntl_errno, "fcntl")); |
| 82 | + } |
| 83 | + |
| 84 | + return scope.Close(Integer::New(fd)); |
| 85 | +} |
| 86 | + |
| 87 | +// 2 arguments means connect with unix |
| 88 | +// t.connect(fd, "/tmp/socket") |
| 89 | +// |
| 90 | +// 3 arguments means connect with TCP or UDP |
| 91 | +// t.connect(fd, "127.0.0.1", 80) |
| 92 | +static Handle<Value> Connect(const Arguments& args) { |
| 93 | + HandleScope scope; |
| 94 | + |
| 95 | + if (!args[0]->IsInt32()) { |
| 96 | + return ThrowException(Exception::TypeError( |
| 97 | + String::New("First argument should be file descriptor"))); |
| 98 | + } |
| 99 | + |
| 100 | + if (args.Length() < 2) { |
| 101 | + return ThrowException(Exception::TypeError( |
| 102 | + String::New("Must have at least two args"))); |
| 103 | + } |
| 104 | + |
| 105 | + int fd = args[0]->Int32Value(); |
| 106 | + |
| 107 | + struct sockaddr *addr; |
| 108 | + socklen_t addrlen; |
| 109 | + |
| 110 | + if (args.Length() == 2) { |
| 111 | + // UNIX |
| 112 | + String::Utf8Value path(args[1]->ToString()); |
| 113 | + |
| 114 | + struct sockaddr_un un = {0}; |
| 115 | + |
| 116 | + if (path.length() > sizeof un.sun_path) { |
| 117 | + return ThrowException(Exception::Error(String::New("Socket path too long"))); |
| 118 | + } |
| 119 | + |
| 120 | + un.sun_family = AF_UNIX; |
| 121 | + strcpy(un.sun_path, *path); |
| 122 | + |
| 123 | + addr = (struct sockaddr*)&un; |
| 124 | + addrlen = path.length() + sizeof(un.sun_family); |
| 125 | + |
| 126 | + } else { |
| 127 | + // TCP or UDP |
| 128 | + String::Utf8Value ip(args[1]->ToString()); |
| 129 | + int port = args[2]->Int32Value(); |
| 130 | + |
| 131 | + struct sockaddr_in6 in6 = {0}; |
| 132 | + |
| 133 | + char ipv6[255] = "::FFFF:"; |
| 134 | + |
| 135 | + if (inet_pton(AF_INET, *ip, &(in6.sin6_addr)) > 0) { |
| 136 | + // If this is an IPv4 address then we need to change it to the |
| 137 | + // IPv4-mapped-on-IPv6 format which looks like |
| 138 | + // ::FFFF:<IPv4 address> |
| 139 | + // For more information see "Address Format" ipv6(7) and "BUGS" in |
| 140 | + // inet_pton(3) |
| 141 | + strcat(ipv6, *ip); |
| 142 | + } else { |
| 143 | + strcpy(ipv6, *ip); |
| 144 | + } |
| 145 | + |
| 146 | + if (inet_pton(AF_INET6, ipv6, &(in6.sin6_addr)) <= 0) { |
| 147 | + return ThrowException( |
| 148 | + ErrnoException(errno, "inet_pton", "Invalid IP Address")); |
| 149 | + } |
| 150 | + |
| 151 | + in6.sin6_family = AF_INET6; |
| 152 | + in6.sin6_port = htons(port); |
| 153 | + |
| 154 | + addr = (struct sockaddr*)&in6; |
| 155 | + addrlen = sizeof in6; |
| 156 | + } |
| 157 | + |
| 158 | + int r = connect(fd, addr, addrlen); |
| 159 | + |
| 160 | + if (r < 0 && errno != EINPROGRESS) { |
| 161 | + return ThrowException(ErrnoException(errno, "connect")); |
| 162 | + } |
| 163 | + |
| 164 | + return Undefined(); |
| 165 | +} |
| 166 | + |
| 167 | + |
| 168 | +void InitNet2(Handle<Object> target) { |
| 169 | + HandleScope scope; |
| 170 | + |
| 171 | + NODE_SET_METHOD(target, "socket", Socket); |
| 172 | + NODE_SET_METHOD(target, "connect", Connect); |
| 173 | + |
| 174 | + errno_symbol = NODE_PSYMBOL("errno"); |
| 175 | + syscall_symbol = NODE_PSYMBOL("syscall"); |
| 176 | +} |
| 177 | + |
| 178 | +} // namespace node |
0 commit comments