mdw@git.distorted.org.uk Git - qmail/blob - rcpthosts.c

   1 #include "cdb.h"
   2 #include "byte.h"
   3 #include "open.h"
   4 #include "error.h"
   5 #include "control.h"
   6 #include "constmap.h"
   7 #include "stralloc.h"
   8 #include "rcpthosts.h"
   9
  10 static int flagrh = 0;
  11 static stralloc rh = {0};
  12 static struct constmap maprh;
  13 static int fdmrh;
  14
  15 int rcpthosts_init()
  16 {
  17   flagrh = control_readfile(&rh,"control/rcpthosts",0);
  18   if (flagrh != 1) return flagrh;
  19   if (!constmap_init(&maprh,rh.s,rh.len,0)) return flagrh = -1;
  20   fdmrh = open_read("control/morercpthosts.cdb");
  21   if (fdmrh == -1) if (errno != error_noent) return flagrh = -1;
  22   return 0;
  23 }
  24
  25 static stralloc host = {0};
  26
  27 int rcpthosts(buf,len)
  28 char *buf;
  29 int len;
  30 {
  31   int j;
  32
  33   if (flagrh != 1) return 1;
  34
  35   j = byte_rchr(buf,len,'@');
  36   if (j >= len) return 1; /* presumably envnoathost is acceptable */
  37
  38   ++j; buf += j; len -= j;
  39
  40   if (!stralloc_copyb(&host,buf,len)) return -1;
  41   buf = host.s;
  42   case_lowerb(buf,len);
  43
  44   for (j = 0;j < len;++j)
  45     if (!j || (buf[j] == '.'))
  46       if (constmap(&maprh,buf + j,len - j)) return 1;
  47
  48   if (fdmrh != -1) {
  49     uint32 dlen;
  50     int r;
  51
  52     for (j = 0;j < len;++j)
  53       if (!j || (buf[j] == '.')) {
  54         r = cdb_seek(fdmrh,buf + j,len - j,&dlen);
  55         if (r) return r;
  56       }
  57   }
  58
  59   return 0;
  60 }