masqmail

view src/libident/ident.c @ 156:ee2afbf92428

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require host_name to be set in config file exit otherwise there is no portable way to determine the hostname (actually the hostname that masqmail should use) thus it must be set by the administrator
author meillo@marmaro.de
date Thu, 08 Jul 2010 09:49:05 +0200
parents 08114f7dcc23
children
line source
1 /*
2 ** ident.c High-level calls to the ident lib
3 **
4 ** Author: Pär Emanuelsson <pell@lysator.liu.se>
5 ** Hacked by: Peter Eriksson <pen@lysator.liu.se>
6 */
7
8 #ifdef NeXT3
9 # include <libc.h>
10 #endif
11
12 #include <stdio.h>
13
14 #ifdef HAVE_ANSIHEADERS
15 # include <stdlib.h>
16 # include <string.h>
17 #endif
18
19 #include <errno.h>
20
21 #include <sys/types.h>
22 #include <sys/socket.h>
23
24 #define IN_LIBIDENT_SRC
25 #include "ident.h"
26
27 #include <arpa/inet.h>
28
29
30
31
32 /* Do a complete ident query and return result */
33
34 IDENT*
35 ident_lookup __P2(int, fd, int, timeout)
36 {
37 struct sockaddr_in localaddr, remoteaddr;
38 int len;
39
40 len = sizeof(remoteaddr);
41 if (getpeername(fd, (struct sockaddr *) &remoteaddr, &len) < 0)
42 return 0;
43
44 len = sizeof(localaddr);
45 if (getsockname(fd, (struct sockaddr *) &localaddr, &len) < 0)
46 return 0;
47
48 return ident_query(&localaddr.sin_addr, &remoteaddr.sin_addr, ntohs(localaddr.sin_port), ntohs(remoteaddr.sin_port), timeout);
49 }
50
51
52 IDENT*
53 ident_query __P5(struct in_addr *, laddr, struct in_addr *, raddr, int, lport, int, rport, int, timeout)
54 {
55 int res;
56 ident_t *id;
57 struct timeval timout;
58 IDENT *ident = 0;
59
60
61 timout.tv_sec = timeout;
62 timout.tv_usec = 0;
63
64 if (timeout)
65 id = id_open(laddr, raddr, &timout);
66 else
67 id = id_open(laddr, raddr, (struct timeval *) 0);
68
69 if (!id) {
70 errno = EINVAL;
71 return 0;
72 }
73
74 if (timeout)
75 res = id_query(id, rport, lport, &timout);
76 else
77 res = id_query(id, rport, lport, (struct timeval *) 0);
78
79 if (res < 0) {
80 id_close(id);
81 return 0;
82 }
83
84 ident = (IDENT *) malloc(sizeof(IDENT));
85 if (!ident) {
86 id_close(id);
87 return 0;
88 }
89
90 if (timeout)
91 res = id_parse(id, &timout, &ident->lport, &ident->fport, &ident->identifier, &ident->opsys, &ident->charset);
92 else
93 res = id_parse(id, (struct timeval *) 0, &ident->lport, &ident->fport, &ident->identifier, &ident->opsys, &ident->charset);
94
95 if (res != 1) {
96 free(ident);
97 id_close(id);
98 return 0;
99 }
100
101 id_close(id);
102 return ident; /* At last! */
103 }
104
105
106 char*
107 ident_id __P2(int, fd, int, timeout)
108 {
109 IDENT *ident;
110 char *id = 0;
111
112 ident = ident_lookup(fd, timeout);
113 if (ident && ident->identifier && *ident->identifier) {
114 id = id_strdup(ident->identifier);
115 if (id == NULL)
116 return NULL;
117 }
118
119 ident_free(ident);
120 return id;
121 }
122
123
124 void
125 ident_free __P1(IDENT *, id)
126 {
127 if (!id)
128 return;
129 if (id->identifier)
130 free(id->identifier);
131 if (id->opsys)
132 free(id->opsys);
133 if (id->charset)
134 free(id->charset);
135 free(id);
136 }