0e7a8e9b4e
git-svn-id: svn://svn.openwrt.org/openwrt/packages@17673 3c298f89-4303-0410-b956-a3cf2f4a3e73
41 lines
835 B
Diff
41 lines
835 B
Diff
--- a/tdlookup.c
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+++ b/tdlookup.c
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@@ -280,15 +280,24 @@ static int doit(char *q,char qtype[2])
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int respond(char *q,char qtype[2],char ip[4])
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{
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- int fd;
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+ static struct tai cdb_valid = { 0 };
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+ static int fd = -1;
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+ struct tai one_second;
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int r;
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char key[6];
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tai_now(&now);
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- fd = open_read("data.cdb");
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- if (fd == -1) return 0;
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- cdb_init(&c,fd);
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-
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+ if (tai_less(&cdb_valid, &now)) {
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+ if (fd != -1) {
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+ cdb_free(&c);
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+ close(fd);
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+ }
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+ fd = open_read("data.cdb");
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+ if (fd == -1) return 0;
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+ cdb_init(&c,fd);
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+ tai_uint(&one_second, 1);
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+ tai_add(&cdb_valid, &now, &one_second);
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+ }
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byte_zero(clientloc,2);
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key[0] = 0;
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key[1] = '%';
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@@ -312,7 +321,5 @@ int respond(char *q,char qtype[2],char i
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r = doit(q,qtype);
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- cdb_free(&c);
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- close(fd);
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return r;
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}
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