Annotation of libaitio/src/sock.c, revision 1.2
1.2 ! misho 1: /*************************************************************************
! 2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
! 3: * by Michael Pounov <misho@elwix.org>
! 4: *
! 5: * $Author: misho $
! 6: * $Id: sock.c,v 1.1.2.4 2013/08/13 00:02:59 misho Exp $
! 7: *
! 8: **************************************************************************
! 9: The ELWIX and AITNET software is distributed under the following
! 10: terms:
! 11:
! 12: All of the documentation and software included in the ELWIX and AITNET
! 13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
! 14:
! 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
! 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
! 17:
! 18: Redistribution and use in source and binary forms, with or without
! 19: modification, are permitted provided that the following conditions
! 20: are met:
! 21: 1. Redistributions of source code must retain the above copyright
! 22: notice, this list of conditions and the following disclaimer.
! 23: 2. Redistributions in binary form must reproduce the above copyright
! 24: notice, this list of conditions and the following disclaimer in the
! 25: documentation and/or other materials provided with the distribution.
! 26: 3. All advertising materials mentioning features or use of this software
! 27: must display the following acknowledgement:
! 28: This product includes software developed by Michael Pounov <misho@elwix.org>
! 29: ELWIX - Embedded LightWeight unIX and its contributors.
! 30: 4. Neither the name of AITNET nor the names of its contributors
! 31: may be used to endorse or promote products derived from this software
! 32: without specific prior written permission.
! 33:
! 34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
! 35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 44: SUCH DAMAGE.
! 45: */
! 46: #include "global.h"
! 47:
! 48:
! 49: /*
! 50: * ioInitSocket() - Init socket and allocate resources
! 51: *
! 52: * @role = Socket role
! 53: * @type = Socket type
! 54: * @proto = Socket protocol
! 55: * @addr = Bind to address
! 56: * @port = Bind to port
! 57: * @buflen = Socket buffer, optional if =0 == BUFSIZ
! 58: * return: NULL error or !=NULL created socket
! 59: */
! 60: sock_t *
! 61: ioInitSocket(int role, int type, int proto, const char *addr, u_short port, size_t buflen)
! 62: {
! 63: sock_t *s = NULL;
! 64: int n = 1;
! 65:
! 66: if (!addr)
! 67: return NULL;
! 68:
! 69: s = e_malloc(sizeof(sock_t));
! 70: if (!s) {
! 71: io_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
! 72: return NULL;
! 73: } else
! 74: memset(s, 0, sizeof(sock_t));
! 75:
! 76: s->sock_role = role;
! 77: s->sock_type = type;
! 78: s->sock_proto = proto;
! 79: if (!e_gethostbyname(addr, port, &s->sock_addr)) {
! 80: io_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
! 81: e_free(s);
! 82: return NULL;
! 83: } else {
! 84: buflen = buflen ? buflen : BUFSIZ;
! 85: AIT_SET_BUFSIZ(&s->sock_buf, 0, buflen);
! 86: }
! 87:
! 88: s->sock_fd = socket(s->sock_addr.sa.sa_family, s->sock_type, s->sock_proto);
! 89: if (s->sock_fd == -1) {
! 90: LOGERR;
! 91: AIT_FREE_VAL(&s->sock_buf);
! 92: e_free(s);
! 93: return NULL;
! 94: }
! 95: if (setsockopt(s->sock_fd, SOL_SOCKET, SO_SNDBUF, &buflen, sizeof buflen) == -1) {
! 96: LOGERR;
! 97: AIT_FREE_VAL(&s->sock_buf);
! 98: e_free(s);
! 99: return NULL;
! 100: }
! 101: if (setsockopt(s->sock_fd, SOL_SOCKET, SO_RCVBUF, &buflen, sizeof buflen) == -1) {
! 102: LOGERR;
! 103: AIT_FREE_VAL(&s->sock_buf);
! 104: e_free(s);
! 105: return NULL;
! 106: }
! 107: if (setsockopt(s->sock_fd, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
! 108: LOGERR;
! 109: AIT_FREE_VAL(&s->sock_buf);
! 110: e_free(s);
! 111: return NULL;
! 112: }
! 113: if (bind(s->sock_fd, &s->sock_addr.sa, s->sock_addr.sa.sa_len) == -1) {
! 114: LOGERR;
! 115: AIT_FREE_VAL(&s->sock_buf);
! 116: e_free(s);
! 117: return NULL;
! 118: }
! 119:
! 120: return s;
! 121: }
! 122:
! 123: /*
! 124: * ioCloseSocket() - Close socket and free resources
! 125: *
! 126: * @s = Socket
! 127: * return: none
! 128: */
! 129: void
! 130: ioCloseSocket(sock_t ** __restrict s)
! 131: {
! 132: if (s && *s) {
! 133: shutdown((*s)->sock_fd, SHUT_RDWR);
! 134: close((*s)->sock_fd);
! 135:
! 136: AIT_FREE_VAL(&(*s)->sock_buf);
! 137: e_free(*s);
! 138: *s = NULL;
! 139: }
! 140: }
! 141:
! 142: /*
! 143: * ioUpSocket() - Setup socket for use
! 144: *
! 145: * @s = Socket
! 146: * @arg = Server role = listen backlog queue and Client role = peer address
! 147: * return: -1 error or 0 ok
! 148: */
! 149: int
! 150: ioUpSocket(sock_t * __restrict s, void *arg)
! 151: {
! 152: int ret = 0;
! 153: sockaddr_t *peer = (sockaddr_t*) arg;
! 154: uintptr_t backlog = (uintptr_t) arg;
! 155:
! 156: if (!s || !arg)
! 157: return -1;
! 158:
! 159: switch (s->sock_role) {
! 160: case IO_SOCK_ROLE_CLIENT:
! 161: memcpy(&s->sock_peer, peer, sizeof s->sock_peer);
! 162:
! 163: if (connect(s->sock_fd, &s->sock_peer.sa,
! 164: s->sock_peer.sa.sa_len) == -1) {
! 165: LOGERR;
! 166: return -1;
! 167: }
! 168: break;
! 169: case IO_SOCK_ROLE_SERVER:
! 170: if (s->sock_type == SOCK_STREAM) {
! 171: s->sock_backq = backlog;
! 172:
! 173: if (listen(s->sock_fd, s->sock_backq) == -1) {
! 174: LOGERR;
! 175: return -1;
! 176: }
! 177: }
! 178: break;
! 179: default:
! 180: io_SetErr(EINVAL, "Unsupported socket type");
! 181: return -1;
! 182: }
! 183:
! 184: fcntl(s->sock_fd, F_SETFL, fcntl(s->sock_fd, F_GETFL) | O_NONBLOCK);
! 185: return ret;
! 186: }
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