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#include "rcpthosts.h"
#include "byte.h"
#include "case.h"
#include "cdbread.h"
#include "close.h"
#include "constmap.h"
#include "error.h"
#include "exit.h"
#include "fd.h"
#include "open.h"
#include "stralloc.h"
#include "control.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;
}
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