nkeynes@998 | 1 | /**
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nkeynes@1021 | 2 | * $Id$
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nkeynes@998 | 3 | *
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nkeynes@998 | 4 | * Network support functions
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nkeynes@998 | 5 | *
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nkeynes@998 | 6 | * Copyright (c) 2009 Nathan Keynes.
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nkeynes@998 | 7 | *
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nkeynes@998 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@998 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@998 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@998 | 11 | * (at your option) any later version.
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nkeynes@998 | 12 | *
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nkeynes@998 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@998 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@998 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@998 | 16 | * GNU General Public License for more details.
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nkeynes@998 | 17 | */
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nkeynes@998 | 18 |
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nkeynes@998 | 19 | #include <string.h>
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nkeynes@998 | 20 | #include <unistd.h>
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nkeynes@998 | 21 | #include <sys/socket.h>
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nkeynes@998 | 22 | #include <netinet/in.h>
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nkeynes@998 | 23 | #include <arpa/inet.h>
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nkeynes@998 | 24 | #include <errno.h>
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nkeynes@1077 | 25 | #include "ioutil.h"
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nkeynes@998 | 26 |
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nkeynes@1077 | 27 | int io_create_server_socket(const char *interface, int port )
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nkeynes@998 | 28 | {
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nkeynes@998 | 29 | struct sockaddr_in sin;
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nkeynes@998 | 30 | int fd = socket(AF_INET, SOCK_STREAM, 0);
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nkeynes@998 | 31 | if( fd == -1 ) {
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nkeynes@998 | 32 | ERROR( "Failed to create TCP socket!" );
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nkeynes@998 | 33 | return -1;
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nkeynes@998 | 34 | }
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nkeynes@998 | 35 |
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nkeynes@998 | 36 | sin.sin_family = AF_INET;
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nkeynes@998 | 37 | sin.sin_addr.s_addr = 0;
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nkeynes@998 | 38 | sin.sin_port = htons(port);
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nkeynes@998 | 39 |
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nkeynes@998 | 40 | if( interface != NULL ) {
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nkeynes@998 | 41 | if( !inet_aton(interface, &sin.sin_addr) ) {
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nkeynes@998 | 42 | /* TODO: hostname lookup */
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nkeynes@998 | 43 | }
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nkeynes@998 | 44 | }
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nkeynes@998 | 45 |
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nkeynes@998 | 46 | if( bind( fd, (struct sockaddr *)&sin, sizeof(sin) ) != 0 ||
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nkeynes@998 | 47 | listen(fd, 5) != 0 ) {
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nkeynes@998 | 48 | close(fd);
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nkeynes@998 | 49 | ERROR( "Failed to bind port %d (%s)", port, strerror(errno) );
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nkeynes@998 | 50 | return -1;
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nkeynes@998 | 51 | }
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nkeynes@998 | 52 | return fd;
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nkeynes@998 | 53 | }
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nkeynes@998 | 54 |
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