1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
#include "cdbread.h"
#include "byte.h"
#include "open.h"
#include "error.h"
#include "exit.h"
#include "control.h"
#include "constmap.h"
#include "stralloc.h"
#include "case.h"
#include "close.h"
#include "fd.h"
#include "rcpthosts.h"
static int flagrh = 0;
static int flagmrh = 0;
static stralloc rh = {0};
static struct constmap maprh;
static int fdmrh;
static struct cdb cdb;
int rcpthosts_init()
{
flagrh = control_readfile(&rh,"control/rcpthosts",0);
if (flagrh != 1) return flagrh;
if (!constmap_init(&maprh,rh.s,rh.len,0)) return flagrh = -1;
fdmrh = open_read("control/morercpthosts.cdb");
if (fdmrh == -1) if (errno != ENOENT) return flagmrh = -1;
if (fdmrh > 0) flagmrh = 1;
return 0;
}
static stralloc host = {0};
int rcpthosts(char *buf, int len)
{
int j;
int r;
if (flagrh != 1) return 1;
j = byte_rchr(buf,len,'@');
if (j >= len) return 1; /* presumably envnoathost is acceptable */
++j; buf += j; len -= j;
if (!stralloc_copyb(&host,buf,len)) return -1;
buf = host.s;
case_lowerb(buf,len);
for (j = 0; j < len; ++j)
if (!j || (buf[j] == '.'))
if (constmap(&maprh,buf + j,len - j)) return 1;
if (flagmrh == 1) {
fdmrh = open_read("control/morercpthosts.cdb");
if (fdmrh == -1) if (errno == ENOENT) return 0;
cdb_init(&cdb,fdmrh);
for (j = 0; j < len ;++j)
if (!j || (buf[j] == '.')) {
r = cdb_find(&cdb,buf + j,len - j);
if (r) { cdb_free(&cdb); close(fdmrh); return r; }
}
cdb_free(&cdb);
close(fdmrh);
}
return 0;
}
|
