1 /*

2 ** MasqMail

3 ** Copyright (C) 2000 Oliver Kurth

4 **

5 ** This program is free software; you can redistribute it and/or modify

6 ** it under the terms of the GNU General Public License as published by

7 ** the Free Software Foundation; either version 2 of the License, or

8 ** (at your option) any later version.

9 **

10 ** This program is distributed in the hope that it will be useful,

11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of

12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

13 ** GNU General Public License for more details.

14 **

15 ** You should have received a copy of the GNU General Public License

16 ** along with this program; if not, write to the Free Software

17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

18 */

19

20 #include "masqmail.h"

21

22 /* define if you get problems... */

23 /* #define SOCKADDR_OLD 1 */

24

25 gboolean

26 init_sockaddr(struct sockaddr_in *name, interface *iface)

27 {

28 struct hostent *he;

29 struct in_addr ia;

30

31 #ifdef SOCKADDR_OLD

32 /* here I tried to be intelligent and failed. */

33 if (isalpha(iface->address[0])) {

34 if ((he = gethostbyname(iface->address)) == NULL) {

35 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);

36 return FALSE;

37 }

38 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));

39 } else if (isdigit(iface->address[0])) {

40 if (inet_aton(iface->address, &ia)) {

41 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));

42 } else {

43 logwrite(LOG_ALERT, "invalid address '%s': inet_aton() failed (deleting)\n", iface->address);

44 return FALSE;

45 }

46 } else {

47 logwrite(LOG_ALERT, "invalid address '%s', should begin with a aphanumeric (deleting)\n", iface->address);

48 return FALSE;

49 }

50 #else

51 /* this is how others to it. I follow the crowd... */

52 if (inet_aton(iface->address, &ia) != 0) {

53 /* IP address */

54 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr));

55 } else {

56 if ((he = gethostbyname(iface->address)) == NULL) {

57 logwrite(LOG_ALERT, "local address '%s' unknown. (deleting)\n", iface->address);

58 return FALSE;

59 }

60 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr));

61 }

62 #endif

63 name->sin_family = AF_INET;

64 name->sin_port = htons(iface->port);

65

66 return TRUE;

67 }

68

69 int

70 make_server_socket(interface *iface)

71 {

72 int sock = -1;

73 struct sockaddr_in server;

74

75 memset(&server, 0, sizeof(struct sockaddr_in));

76

77 /* Create the socket. */

78 sock = socket(PF_INET, SOCK_STREAM, 0);

79 if (sock < 0) {

80 logwrite(LOG_ALERT, "socket: %s\n", strerror(errno));

81 return -1;

82 }

83

84 if (init_sockaddr(&server, iface)) {

85 /* bind the socket */

86 if (bind(sock, (struct sockaddr *) &server, sizeof(server)) < 0) {

87 logwrite(LOG_ALERT, "bind: %s\n", strerror(errno));

88 return -1;

89 }

90 } else {

91 close(sock);

92 return -1;

93 }

94

95 return sock;

96 }