masqmail

view src/interface.c @ 221:8742d2cee364

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added a note to the long vs. int question in md5.h Solar Designer explained to me in privat conversation that the int had performed much better on some systems and that 16bit ints are very rare. Still I like using the long.
author meillo@marmaro.de
date Fri, 23 Jul 2010 10:53:04 +0200
parents 08114f7dcc23
children 41958685480d
line source
1 /* MasqMail
2 Copyright (C) 2000 Oliver Kurth
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 #include "masqmail.h"
20
21 /* define if you get problems... */
22 /*#define SOCKADDR_OLD 1*/
23
24 gboolean
25 init_sockaddr(struct sockaddr_in * name, interface * iface)
26 {
27 struct hostent *he;
28 struct in_addr ia;
29
30 #ifdef SOCKADDR_OLD
31 /* here I tried to be intelligent and failed. */
32 if (isalpha(iface->address[0])) {
33 if ((he = gethostbyname(iface->address)) == NULL) {
34 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);
35 return FALSE;
36 }
37 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
38 } else if (isdigit(iface->address[0])) {
39 if (inet_aton(iface->address, &ia)) {
40 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
41 } else {
42 logwrite(LOG_ALERT, "invalid address '%s': inet_aton() failed (deleting)\n", iface->address);
43 return FALSE;
44 }
45 } else {
46 logwrite(LOG_ALERT, "invalid address '%s', should begin with a aphanumeric (deleting)\n", iface->address);
47 return FALSE;
48 }
49 #else
50 /* this is how others to it. I follow the crowd... */
51 if (inet_aton(iface->address, &ia) != 0) {
52 /* IP address */
53 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));
54 } else {
55 if ((he = gethostbyname(iface->address)) == NULL) {
56 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);
57 return FALSE;
58 }
59 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));
60 }
61 #endif
62 name->sin_family = AF_INET;
63 name->sin_port = htons(iface->port);
64
65 return TRUE;
66 }
67
68 int
69 make_server_socket(interface * iface)
70 {
71 int sock = -1;
72 struct sockaddr_in server;
73
74 memset(&server, 0, sizeof(struct sockaddr_in));
75
76 /* Create the socket. */
77 sock = socket(PF_INET, SOCK_STREAM, 0);
78 if (sock < 0) {
79 logwrite(LOG_ALERT, "socket: %s\n", strerror(errno));
80 return -1;
81 }
82
83 if (init_sockaddr(&server, iface)) {
84 /* bind the socket */
85 if (bind(sock, (struct sockaddr *) &server, sizeof(server)) < 0) {
86 logwrite(LOG_ALERT, "bind: %s\n", strerror(errno));
87 return -1;
88 }
89 } else {
90 close(sock);
91 return -1;
92 }
93
94 return sock;
95 }