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1 /* MasqMail
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2 Copyright (C) 2000 Oliver Kurth
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software
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16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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17 */
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18
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19 #include "masqmail.h"
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20
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21 /* define if you get problems... */
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22 /*#define SOCKADDR_OLD 1*/
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23
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24 gboolean
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25 init_sockaddr(struct sockaddr_in *name, interface *iface)
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26 {
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27 struct hostent *he;
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28 struct in_addr ia;
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29
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30 #ifdef SOCKADDR_OLD
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31 /* here I tried to be intelligent and failed. */
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32 if (isalpha(iface->address[0])) {
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33 if ((he = gethostbyname(iface->address)) == NULL) {
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34 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);
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35 return FALSE;
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36 }
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37 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
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38 } else if (isdigit(iface->address[0])) {
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39 if (inet_aton(iface->address, &ia)) {
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40 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
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41 } else {
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42 logwrite(LOG_ALERT, "invalid address '%s': inet_aton() failed (deleting)\n", iface->address);
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43 return FALSE;
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44 }
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45 } else {
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46 logwrite(LOG_ALERT, "invalid address '%s', should begin with a aphanumeric (deleting)\n", iface->address);
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47 return FALSE;
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48 }
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49 #else
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50 /* this is how others to it. I follow the crowd... */
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51 if (inet_aton(iface->address, &ia) != 0) {
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52 /* IP address */
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53 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
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54 } else {
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55 if ((he = gethostbyname(iface->address)) == NULL) {
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56 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);
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57 return FALSE;
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58 }
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59 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
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60 }
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61 #endif
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62 name->sin_family = AF_INET;
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63 name->sin_port = htons(iface->port);
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64
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65 return TRUE;
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66 }
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67
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68 int
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69 make_server_socket(interface *iface)
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70 {
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71 int sock = -1;
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72 struct sockaddr_in server;
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73
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74 memset(&server, 0, sizeof(struct sockaddr_in));
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75
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76 /* Create the socket. */
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77 sock = socket(PF_INET, SOCK_STREAM, 0);
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78 if (sock < 0) {
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79 logwrite(LOG_ALERT, "socket: %s\n", strerror(errno));
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80 return -1;
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81 }
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82
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83 if (init_sockaddr(&server, iface)) {
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84 /* bind the socket */
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85 if (bind(sock, (struct sockaddr *) &server, sizeof(server)) < 0) {
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86 logwrite(LOG_ALERT, "bind: %s\n", strerror(errno));
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87 return -1;
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88 }
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89 } else {
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90 close(sock);
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91 return -1;
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92 }
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93
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94 return sock;
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95 }
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