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--- a/dnsfilter.c
+++ b/dnsfilter.c
@@ -41,6 +41,7 @@ int inbuflen = 0;
iopause_fd *inio;
int flag0 = 1;
+int opt_replace = 0;
iopause_fd *io;
int iolen;
@@ -51,12 +52,16 @@ char name[DNS_NAME4_DOMAIN];
void errout(int i)
{
int j;
-
- if (!stralloc_copys(&x[i].middle,":")) nomem();
- if (!stralloc_cats(&x[i].middle,error_str(errno))) nomem();
- for (j = 0;j < x[i].middle.len;++j)
- if (x[i].middle.s[j] == ' ')
- x[i].middle.s[j] = '-';
+
+ if (opt_replace)
+ x[i].middle.len=0;
+ else {
+ if (!stralloc_copys(&x[i].middle,":")) nomem();
+ if (!stralloc_cats(&x[i].middle,error_str(errno))) nomem();
+ for (j = 0;j < x[i].middle.len;++j)
+ if (x[i].middle.s[j] == ' ')
+ x[i].middle.s[j] = '-';
+ }
}
int main(int argc,char **argv)
@@ -69,7 +74,7 @@ int main(int argc,char **argv)
int j;
int r;
- while ((opt = getopt(argc,argv,"c:l:")) != opteof)
+ while ((opt = getopt(argc,argv,"c:l:r")) != opteof)
switch(opt) {
case 'c':
scan_ulong(optarg,&u);
@@ -83,8 +88,11 @@ int main(int argc,char **argv)
if (u > 1000000) u = 1000000;
xmax = u;
break;
+ case 'r':
+ opt_replace = 1;
+ break;
default:
- strerr_die1x(111,"dnsfilter: usage: dnsfilter [ -c concurrency ] [ -l lines ]");
+ strerr_die1x(111,"dnsfilter: usage: dnsfilter [ -c concurrency ] [ -l lines ] [-r]");
}
x = (struct line *) alloc(xmax * sizeof(struct line));
@@ -140,8 +148,13 @@ int main(int argc,char **argv)
else if (r == 1) {
if (dns_name_packet(&x[i].middle,x[i].dt.packet,x[i].dt.packetlen) == -1)
errout(i);
- if (x[i].middle.len)
- if (!stralloc_cats(&x[i].left,"=")) nomem();
+ if (x[i].middle.len) {
+ if (opt_replace) {
+ if (!stralloc_copys(&x[i].left, "")) nomem();
+ } else {
+ if (!stralloc_cats(&x[i].left, "=")) nomem();
+ }
+ }
x[i].flagactive = 0;
--numactive;
}
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