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Diffstat (limited to 'src/dnsstub/dns_ipq.c')
-rw-r--r--src/dnsstub/dns_ipq.c147
1 files changed, 73 insertions, 74 deletions
diff --git a/src/dnsstub/dns_ipq.c b/src/dnsstub/dns_ipq.c
index 26c3818..d1a40e5 100644
--- a/src/dnsstub/dns_ipq.c
+++ b/src/dnsstub/dns_ipq.c
@@ -1,10 +1,10 @@
-#include "case.h"
#include "byte.h"
-#include "str.h"
-#include "stralloc.h"
+#include "case.h"
#include "dnsresolv.h"
-#include "socket_if.h"
#include "ip.h"
+#include "socket_if.h"
+#include "str.h"
+#include "stralloc.h"
/**
@file dns_ipq.c
@@ -16,7 +16,7 @@
/**
@fn int doit -> @return number of added chars to name
*/
-static int doit(stralloc *work,const char *rule)
+static int doit(stralloc *work, const char *rule)
{
char ch;
unsigned int colon;
@@ -24,27 +24,27 @@ static int doit(stralloc *work,const char *rule)
ch = *rule++;
if ((ch != '?') && (ch != '=') && (ch != '*') && (ch != '-')) return 1;
- colon = str_chr((char *)rule,':');
+ colon = str_chr((char *)rule, ':');
if (!rule[colon]) return 1;
if (work->len < colon) return 1;
prefixlen = work->len - colon;
if ((ch == '=') && prefixlen) return 1;
- if (case_diffb((char *)rule,colon,work->s + prefixlen)) return 1;
+ if (case_diffb((char *)rule, colon, work->s + prefixlen)) return 1;
if (ch == '?') {
- if (byte_chr(work->s,prefixlen,'.') < prefixlen) return 1;
- if (byte_chr(work->s,prefixlen,'[') < prefixlen) return 1;
- if (byte_chr(work->s,prefixlen,']') < prefixlen) return 1;
+ if (byte_chr(work->s, prefixlen, '.') < prefixlen) return 1;
+ if (byte_chr(work->s, prefixlen, '[') < prefixlen) return 1;
+ if (byte_chr(work->s, prefixlen, ']') < prefixlen) return 1;
}
work->len = prefixlen;
if (ch == '-') work->len = 0;
- return stralloc_cats(work,rule + colon + 1);
+ return stralloc_cats(work, rule + colon + 1);
}
/** @fn int dns_ip4_qualify_rules -> @return number of IPv4 addresss with rules */
-int dns_ip4_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const stralloc *rules)
+int dns_ip4_qualify_rules(stralloc *ipout, stralloc *fqdn, const stralloc *in, const stralloc *rules)
{
unsigned int i;
unsigned int j;
@@ -52,25 +52,24 @@ int dns_ip4_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,cons
unsigned int fqdnlen;
int rc = 0;
- if (!stralloc_copy(fqdn,(stralloc *)in)) return DNS_MEM;
+ if (!stralloc_copy(fqdn, (stralloc *)in)) return DNS_MEM;
for (j = i = 0; j < rules->len; ++j)
if (!rules->s[j]) {
- if (!doit(fqdn,rules->s + i)) return DNS_INT;
+ if (!doit(fqdn, rules->s + i)) return DNS_INT;
i = j + 1;
}
fqdnlen = fqdn->len;
- plus = byte_chr(fqdn->s,fqdnlen,'+');
- if (plus >= fqdnlen)
- return dns_ip4(ipout,fqdn);
+ plus = byte_chr(fqdn->s, fqdnlen, '+');
+ if (plus >= fqdnlen) return dns_ip4(ipout, fqdn);
i = plus + 1;
for (;;) {
- j = byte_chr(fqdn->s + i,fqdnlen - i,'+');
- byte_copy(fqdn->s + plus,j,fqdn->s + i);
+ j = byte_chr(fqdn->s + i, fqdnlen - i, '+');
+ byte_copy(fqdn->s + plus, j, fqdn->s + i);
fqdn->len = plus + j;
- if (rc += dns_ip4(ipout,fqdn) < 0) return DNS_ERR;
+ if (rc += dns_ip4(ipout, fqdn) < 0) return DNS_ERR;
i += j;
if (i >= fqdnlen) return rc;
++i;
@@ -80,45 +79,44 @@ int dns_ip4_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,cons
/** @fn int dns_ip4_qualify -> @return number of IPv4 addresss qualified */
-int dns_ip4_qualify(stralloc *ipout,stralloc *fqdn,const stralloc *in)
+int dns_ip4_qualify(stralloc *ipout, stralloc *fqdn, const stralloc *in)
{
int r;
static stralloc rules;
- if ((r = dns_ip_qualify_localhost(ipout,fqdn,in)) > 0 ) return r;
+ if ((r = dns_ip_qualify_localhost(ipout, fqdn, in)) > 0) return r;
if (dns_resolvconfrewrite(&rules) < 0) return DNS_INT;
- return dns_ip4_qualify_rules(ipout,fqdn,in,&rules);
+ return dns_ip4_qualify_rules(ipout, fqdn, in, &rules);
}
/** @fn int dns_ip4_qualify_rules -> @return number of IPv6 addresss with rules */
-int dns_ip6_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const stralloc *rules)
+int dns_ip6_qualify_rules(stralloc *ipout, stralloc *fqdn, const stralloc *in, const stralloc *rules)
{
unsigned int i;
unsigned int j;
unsigned int plus;
unsigned int fqdnlen;
- int rc = 0;
+ int rc = 0;
- if (!stralloc_copy(fqdn,(stralloc *)in)) return DNS_MEM;
+ if (!stralloc_copy(fqdn, (stralloc *)in)) return DNS_MEM;
for (j = i = 0; j < rules->len; ++j)
if (!rules->s[j]) {
- if (!doit(fqdn,rules->s + i)) return DNS_INT;
+ if (!doit(fqdn, rules->s + i)) return DNS_INT;
i = j + 1;
}
fqdnlen = fqdn->len;
- plus = byte_chr(fqdn->s,fqdnlen,'+');
- if (plus >= fqdnlen)
- return dns_ip6(ipout,fqdn);
+ plus = byte_chr(fqdn->s, fqdnlen, '+');
+ if (plus >= fqdnlen) return dns_ip6(ipout, fqdn);
i = plus + 1;
for (;;) {
- j = byte_chr(fqdn->s + i,fqdnlen - i,'+');
- byte_copy(fqdn->s + plus,j,fqdn->s + i);
+ j = byte_chr(fqdn->s + i, fqdnlen - i, '+');
+ byte_copy(fqdn->s + plus, j, fqdn->s + i);
fqdn->len = plus + j;
- if ((rc += dns_ip6(ipout,fqdn)) < 0) return DNS_ERR;
+ if ((rc += dns_ip6(ipout, fqdn)) < 0) return DNS_ERR;
i += j;
if (i >= fqdnlen) return rc;
++i;
@@ -128,19 +126,19 @@ int dns_ip6_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,cons
/** @fn int dns_ip6_qualify -> @return number of IPv6 addresss qualified */
-int dns_ip6_qualify(stralloc *ipout,stralloc *fqdn,const stralloc *in)
+int dns_ip6_qualify(stralloc *ipout, stralloc *fqdn, const stralloc *in)
{
- int r;
+ int r;
static stralloc rules;
-
- if ((r = dns_ip_qualify_localhost(ipout,fqdn,in)) > 0) return r;
+
+ if ((r = dns_ip_qualify_localhost(ipout, fqdn, in)) > 0) return r;
if (dns_resolvconfrewrite(&rules) < 0) return DNS_INT;
- return dns_ip6_qualify_rules(ipout,fqdn,in,&rules);
+ return dns_ip6_qualify_rules(ipout, fqdn, in, &rules);
}
/** @fn int dns_ip_qualify_rules -> @return number of IPv6+IPv4 addresss with rules */
-int dns_ip_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const stralloc *rules)
+int dns_ip_qualify_rules(stralloc *ipout, stralloc *fqdn, const stralloc *in, const stralloc *rules)
{
unsigned int i;
unsigned int j;
@@ -148,25 +146,25 @@ int dns_ip_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const
unsigned int plus;
unsigned int fqdnlen;
stralloc tmp = {0};
- int rc = 0;
+ int rc = 0;
- if (!stralloc_copy(fqdn,(stralloc *)in)) return DNS_MEM;
- if (!stralloc_copys(ipout,"")) return DNS_MEM;
+ if (!stralloc_copy(fqdn, (stralloc *)in)) return DNS_MEM;
+ if (!stralloc_copys(ipout, "")) return DNS_MEM;
for (j = i = 0; j < rules->len; ++j)
if (!rules->s[j]) {
- if (!doit(fqdn,rules->s + i)) return DNS_INT;
+ if (!doit(fqdn, rules->s + i)) return DNS_INT;
i = j + 1;
}
fqdnlen = fqdn->len;
- plus = byte_chr(fqdn->s,fqdnlen,'+');
+ plus = byte_chr(fqdn->s, fqdnlen, '+');
if (plus >= fqdnlen) {
- rc = dns_ip6(ipout,fqdn);
- if (dns_ip4(&tmp,fqdn) > 0) {
+ rc = dns_ip6(ipout, fqdn);
+ if (dns_ip4(&tmp, fqdn) > 0) {
for (k = 0; k < tmp.len; k += 4) {
- if (!stralloc_catb(ipout,(const char *) V4mappedprefix,12)) return DNS_MEM;
- if (!stralloc_catb(ipout,tmp.s + k,4)) return DNS_MEM;
+ if (!stralloc_catb(ipout, (const char *)V4mappedprefix, 12)) return DNS_MEM;
+ if (!stralloc_catb(ipout, tmp.s + k, 4)) return DNS_MEM;
rc++;
}
}
@@ -175,20 +173,21 @@ int dns_ip_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const
i = plus + 1;
for (;;) {
- j = byte_chr(fqdn->s + i,fqdnlen - i,'+');
- byte_copy(fqdn->s + plus,j,fqdn->s + i);
+ j = byte_chr(fqdn->s + i, fqdnlen - i, '+');
+ byte_copy(fqdn->s + plus, j, fqdn->s + i);
fqdn->len = plus + j;
- if (!stralloc_copys(ipout,"")) return DNS_MEM;
- rc = dns_ip6(&tmp,fqdn);
- if (rc) if (!stralloc_cat(ipout,&tmp)) return DNS_MEM;
- if (dns_ip4(&tmp,fqdn) > 0) {
+ if (!stralloc_copys(ipout, "")) return DNS_MEM;
+ rc = dns_ip6(&tmp, fqdn);
+ if (rc)
+ if (!stralloc_cat(ipout, &tmp)) return DNS_MEM;
+ if (dns_ip4(&tmp, fqdn) > 0) {
for (k = 0; k < tmp.len; k += 4) {
- if (!stralloc_catb(ipout,(const char *) V4mappedprefix,12)) return DNS_MEM;
- if (!stralloc_catb(ipout,tmp.s + k,4)) return DNS_MEM;
+ if (!stralloc_catb(ipout, (const char *)V4mappedprefix, 12)) return DNS_MEM;
+ if (!stralloc_catb(ipout, tmp.s + k, 4)) return DNS_MEM;
rc++;
}
}
-
+
if (rc < 0) return DNS_ERR;
i += j;
if (i >= fqdnlen) return rc;
@@ -199,38 +198,38 @@ int dns_ip_qualify_rules(stralloc *ipout,stralloc *fqdn,const stralloc *in,const
/** @fn int dns_ip_qualify_localhost -> @return number of IP addresss */
-int dns_ip_qualify_localhost(stralloc *ipout,stralloc *fqdn,const stralloc *in)
+int dns_ip_qualify_localhost(stralloc *ipout, stralloc *fqdn, const stralloc *in)
{
- if (!stralloc_copys(ipout,"")) return DNS_MEM;
- if (!stralloc_copys(fqdn,"")) return DNS_MEM;
+ if (!stralloc_copys(ipout, "")) return DNS_MEM;
+ if (!stralloc_copys(fqdn, "")) return DNS_MEM;
ipout->len = 0;
- if (byte_equal(in->s,9,LOCALHOST)) {
- if (!stralloc_copyb(ipout,(const char *) V6loopback,16)) return DNS_MEM;
- if (!stralloc_catb(ipout,(const char *) V46loopback,16)) return DNS_MEM;
- if (!stralloc_copys(fqdn,"localhost.localhost.")) return DNS_MEM;
+ if (byte_equal(in->s, 9, LOCALHOST)) {
+ if (!stralloc_copyb(ipout, (const char *)V6loopback, 16)) return DNS_MEM;
+ if (!stralloc_catb(ipout, (const char *)V46loopback, 16)) return DNS_MEM;
+ if (!stralloc_copys(fqdn, "localhost.localhost.")) return DNS_MEM;
}
- if (byte_equal(in->s,13,IP4_LOOPBACK)) {
- if (!stralloc_copyb(ipout,(const char *) V46loopback,16)) return DNS_MEM;
- if (!stralloc_copys(fqdn,"ip4-loopback.localhost.")) return DNS_MEM;
+ if (byte_equal(in->s, 13, IP4_LOOPBACK)) {
+ if (!stralloc_copyb(ipout, (const char *)V46loopback, 16)) return DNS_MEM;
+ if (!stralloc_copys(fqdn, "ip4-loopback.localhost.")) return DNS_MEM;
}
- if (byte_equal(in->s,13,IP6_LOOPBACK)) {
- if (!stralloc_copyb(ipout,(const char *) V6loopback,16)) return DNS_MEM;
- if (!stralloc_copys(fqdn,"ip6-loopback.localhost.")) return DNS_MEM;
+ if (byte_equal(in->s, 13, IP6_LOOPBACK)) {
+ if (!stralloc_copyb(ipout, (const char *)V6loopback, 16)) return DNS_MEM;
+ if (!stralloc_copys(fqdn, "ip6-loopback.localhost.")) return DNS_MEM;
}
-// if (!stralloc_0(fqdn)) return DNS_MEM; // don't do it
+ // if (!stralloc_0(fqdn)) return DNS_MEM; // don't do it
return ipout->len ? ipout->len % 15 : 0;
}
/** @fn int dns_ip_qualify -> @return number of IP addresss */
-int dns_ip_qualify(stralloc *ipout,stralloc *fqdn,const stralloc *in)
+int dns_ip_qualify(stralloc *ipout, stralloc *fqdn, const stralloc *in)
{
int r;
static stralloc rules;
- if ((r = dns_ip_qualify_localhost(ipout,fqdn,in)) > 0 ) return r;
+ if ((r = dns_ip_qualify_localhost(ipout, fqdn, in)) > 0) return r;
if (dns_resolvconfrewrite(&rules) < 0) return DNS_INT;
- return dns_ip_qualify_rules(ipout,fqdn,in,&rules);
+ return dns_ip_qualify_rules(ipout, fqdn, in, &rules);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 12:03:44 +0000