Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 2002-2010 Wizzer Works. |
| 2 | // |
| 3 | // This program is free software; you can redistribute it and/or modify |
| 4 | // it under the terms of the GNU General Public License as published by |
| 5 | // the Free Software Foundation; either version 2 of the License, or |
| 6 | // (at your option) any later version. |
| 7 | // |
| 8 | // This program is distributed in the hope that it will be useful, |
| 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | // GNU General Public License for more details. |
| 12 | // |
| 13 | // You should have received a copy of the GNU General Public License |
| 14 | // along with this program; if not, write to the Free Software |
| 15 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 16 | // |
| 17 | // As a special exception, you may use this file as part of a free software |
| 18 | // library without restriction. Specifically, if other files instantiate |
| 19 | // templates or use macros or inline functions from this file, or you compile |
| 20 | // this file and link it with other files to produce an executable, this |
| 21 | // file does not by itself cause the resulting executable to be covered by |
| 22 | // the GNU General Public License. This exception does not however |
| 23 | // invalidate any other reasons why the executable file might be covered by |
| 24 | // the GNU General Public License. |
| 25 | // |
| 26 | // This exception applies only to the code released under the name GNU |
| 27 | // Common C++. If you copy code from other releases into a copy of GNU |
| 28 | // Common C++, as the General Public License permits, the exception does |
| 29 | // not apply to the code that you add in this way. To avoid misleading |
| 30 | // anyone as to the status of such modified files, you must delete |
| 31 | // this exception notice from them. |
| 32 | // |
| 33 | // If you write modifications of your own for GNU Common C++, it is your choice |
| 34 | // whether to permit this exception to apply to your modifications. |
| 35 | // If you do not wish that, delete this exception notice. |
| 36 | // |
| 37 | |
| 38 | /** |
| 39 | * @file simplesocket.cpp |
| 40 | * @brief Implementation of SimpleTCPStream methods. |
| 41 | * |
| 42 | * Implementation of SimpleTCPStream methods. |
| 43 | * |
| 44 | * @author Mark S. Millard (msm@wizzer.com) |
| 45 | * @date 2002-08-15 |
| 46 | */ |
| 47 | |
| 48 | // Include Common C++ Library header files. |
| 49 | #include <cc++/config.h> |
| 50 | #include <cc++/export.h> |
| 51 | #include <cc++/socket.h> |
| 52 | |
| 53 | #ifndef INADDR_LOOPBACK |
| 54 | #define INADDR_LOOPBACK (unsigned long)0x7f000001 |
| 55 | #endif |
| 56 | |
| 57 | #ifdef CCXX_NAMESPACES |
| 58 | namespace ost { |
| 59 | using namespace std; |
| 60 | #endif |
| 61 | |
| 62 | SimpleTCPStream::SimpleTCPStream(TCPSocket &server, size_t size) : |
| 63 | Socket(accept(server.getSocket(), NULL, NULL)) |
| 64 | { |
| 65 | tpport_t port; |
| 66 | IPV4Host host = getPeer(&port); |
| 67 | |
| 68 | if (! server.onAccept(host, port)) { |
| 69 | endSocket(); |
| 70 | error(errConnectRejected); |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | Socket::state = CONNECTED; |
| 75 | } |
| 76 | |
| 77 | SimpleTCPStream::SimpleTCPStream(const IPV4Host &host, tpport_t port, size_t size) : |
| 78 | Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) |
| 79 | { |
| 80 | Connect(host, port, size); |
| 81 | } |
| 82 | |
| 83 | SimpleTCPStream::~SimpleTCPStream() |
| 84 | { |
| 85 | endStream(); |
| 86 | } |
| 87 | |
| 88 | IPV4Host SimpleTCPStream::getSender(tpport_t *port) const |
| 89 | { |
| 90 | return IPV4Host(); |
| 91 | } |
| 92 | |
| 93 | void SimpleTCPStream::Connect(const IPV4Host &host, tpport_t port, size_t size) |
| 94 | { |
| 95 | size_t i; |
| 96 | |
| 97 | for (i = 0 ; i < host.getAddressCount(); i++) { |
| 98 | struct sockaddr_in addr; |
| 99 | memset(&addr, 0, sizeof(addr)); |
| 100 | addr.sin_family = AF_INET; |
| 101 | addr.sin_addr = host.getAddress(i); |
| 102 | addr.sin_port = htons(port); |
| 103 | |
| 104 | // Win32 will crash if you try to connect to INADDR_ANY. |
| 105 | if ( INADDR_ANY == addr.sin_addr.s_addr ) |
| 106 | addr.sin_addr.s_addr = INADDR_LOOPBACK; |
| 107 | if (::connect(so, (struct sockaddr *)&addr, (socklen_t)sizeof(addr)) == 0) |
| 108 | break; |
| 109 | } |
| 110 | |
| 111 | if (i == host.getAddressCount()) { |
| 112 | connectError(); |
| 113 | endSocket(); |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | Socket::state = CONNECTED; |
| 118 | } |
| 119 | |
| 120 | SimpleTCPStream::SimpleTCPStream() : |
| 121 | Socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) {} |
| 122 | |
| 123 | SimpleTCPStream::SimpleTCPStream(const SimpleTCPStream &source) : |
| 124 | #ifdef WIN32 |
| 125 | Socket(source.so) |
| 126 | #else |
| 127 | Socket(dup(source.so)) |
| 128 | #endif |
| 129 | {} |
| 130 | |
| 131 | void SimpleTCPStream::endStream(void) |
| 132 | { |
| 133 | endSocket(); |
| 134 | } |
| 135 | |
| 136 | ssize_t SimpleTCPStream::read(char *bytes, size_t length, timeout_t timeout) |
| 137 | { |
| 138 | // Declare local variables. |
| 139 | ssize_t rlen = 0; |
| 140 | size_t totalrecv = 0; |
| 141 | char *currentpos = bytes; |
| 142 | |
| 143 | // Check for reasonable requested length. |
| 144 | if (length < 1) { |
| 145 | return (ssize_t)totalrecv; |
| 146 | } |
| 147 | |
| 148 | while (totalrecv < length) { |
| 149 | // Check for timeout condition. |
| 150 | if (timeout) { |
| 151 | if (! isPending(pendingInput, timeout)) { |
| 152 | error(errTimeout); |
| 153 | return -1; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | // Attempt to read data. |
| 158 | rlen = _IORET64 ::recv(so, (char *) currentpos, _IOLEN64 (length-totalrecv), 0); |
| 159 | if (rlen == 0 || rlen == -1) { |
| 160 | break; |
| 161 | } |
| 162 | // cout << "received " << rlen << " bytes, remaining " << length - totalrecv << flush; |
| 163 | |
| 164 | totalrecv += rlen; |
| 165 | currentpos += rlen; |
| 166 | } |
| 167 | |
| 168 | // Set error condition if necessary. |
| 169 | if (rlen == -1) { |
| 170 | error(errInput); |
| 171 | } |
| 172 | |
| 173 | // Return total number of bytes recieved. |
| 174 | return (ssize_t)totalrecv; |
| 175 | } |
| 176 | |
| 177 | ssize_t SimpleTCPStream::write(const char *bytes, size_t length, timeout_t timeout) |
| 178 | { |
| 179 | // Declare local variables. |
| 180 | ssize_t rlen = 0; |
| 181 | |
| 182 | // Check for reasonable requested length. |
| 183 | if (length < 1) { |
| 184 | return rlen; |
| 185 | } |
| 186 | |
| 187 | // Check for timeout condition. |
| 188 | if (timeout) { |
| 189 | if (! isPending(pendingOutput, timeout)) { |
| 190 | error(errTimeout); |
| 191 | return -1; |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | // Attempt to write data. |
| 196 | rlen = _IORET64 ::send(so, (const char *)bytes, _IOLEN64 length, MSG_NOSIGNAL); |
| 197 | if (rlen == -1) { |
| 198 | error(errOutput); |
| 199 | } |
| 200 | |
| 201 | return rlen; |
| 202 | } |
| 203 | |
| 204 | ssize_t SimpleTCPStream::peek(char *bytes, size_t length, timeout_t timeout) |
| 205 | { |
| 206 | // Declare local variables. |
| 207 | ssize_t rlen = 0; |
| 208 | size_t totalrecv = 0; |
| 209 | char *currentpos = bytes; |
| 210 | |
| 211 | // Check for reasonable requested length. |
| 212 | if (length < 1) { |
| 213 | return (ssize_t)totalrecv; |
| 214 | } |
| 215 | |
| 216 | while (totalrecv < length) { |
| 217 | // Check for timeout condition. |
| 218 | if (timeout) { |
| 219 | if (! isPending(pendingInput, timeout)) { |
| 220 | error(errTimeout); |
| 221 | return -1; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | // Attempt to read data. |
| 226 | rlen = _IORET64 ::recv(so, (char *) currentpos, _IOLEN64 (length-totalrecv), MSG_PEEK); |
| 227 | if (rlen == 0 || rlen == -1) { |
| 228 | break; |
| 229 | } |
| 230 | // cout << "received " << rlen << " bytes, remaining " << length - totalrecv << flush; |
| 231 | |
| 232 | totalrecv += rlen; |
| 233 | currentpos += rlen; |
| 234 | } |
| 235 | |
| 236 | // Set error condition if necessary. |
| 237 | if (rlen == -1) { |
| 238 | error(errInput); |
| 239 | } |
| 240 | |
| 241 | // Return total number of bytes recieved. |
| 242 | return (ssize_t)totalrecv; |
| 243 | } |
| 244 | |
| 245 | bool SimpleTCPStream::isPending(Pending pending, timeout_t timeout) |
| 246 | { |
| 247 | return Socket::isPending(pending, timeout); |
| 248 | } |
| 249 | |
| 250 | #ifdef CCXX_NAMESPACES |
| 251 | } /* for ost */ |
| 252 | #endif |
| 253 | |
| 254 | /** EMACS ** |
| 255 | * Local variables: |
| 256 | * mode: c++ |
| 257 | * c-basic-offset: 4 |
| 258 | * End: |
| 259 | */ |