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-rw-r--r--dnsstub/Makefile23
-rw-r--r--dnsstub/README.md171
-rw-r--r--dnsstub/TARGETS18
-rw-r--r--dnsstub/dns_cname.c59
-rw-r--r--dnsstub/dns_dfd.c76
-rw-r--r--dnsstub/dns_domain.c80
-rw-r--r--dnsstub/dns_dtda.c43
-rw-r--r--dnsstub/dns_ip.c198
-rw-r--r--dnsstub/dns_ipq.c236
-rw-r--r--dnsstub/dns_mx.c63
-rw-r--r--dnsstub/dns_name.c80
-rw-r--r--dnsstub/dns_nd.c48
-rw-r--r--dnsstub/dns_packet.c85
-rw-r--r--dnsstub/dns_random.c70
-rw-r--r--dnsstub/dns_rcip.c114
-rw-r--r--dnsstub/dns_rcrw.c141
-rw-r--r--dnsstub/dns_resolve.c39
-rw-r--r--dnsstub/dns_sortip.c45
-rw-r--r--dnsstub/dns_transmit.c436
-rw-r--r--dnsstub/dns_txt.c64
20 files changed, 0 insertions, 2089 deletions
diff --git a/dnsstub/Makefile b/dnsstub/Makefile
deleted file mode 100644
index 6c3bab3..0000000
--- a/dnsstub/Makefile
+++ /dev/null
@@ -1,23 +0,0 @@
-
-COMPILE=../compile
-MAKELIB=../makelib
-CCFLAGS=-I../include
-
-default: clean check dnsresolv.a
-
-check:
- @[ -f $(COMPILE) ] && [ -f $(MAKELIB) ] || ( cd .. ; ./configure ; )
-
-clean:
- rm -f `cat TARGETS`
-
-dnsresolv.a: \
-dns_domain.c dns_dtda.c dns_ip.c dns_ipq.c dns_name.c \
-dns_nd.c dns_packet.c dns_random.c dns_rcip.c dns_rcrw.c dns_resolve.c \
-dns_sortip.c dns_transmit.c dns_txt.c
- $(COMPILE) $(CCFLAGS) dns_domain.c dns_dfd.c dns_dtda.c dns_ip.c dns_ipq.c \
- dns_mx.c dns_name.c dns_nd.c dns_packet.c dns_random.c dns_rcip.c \
- dns_rcrw.c dns_resolve.c dns_sortip.c dns_transmit.c dns_txt.c dns_cname.c
- $(MAKELIB) dnsresolv.a dns_domain.o dns_dfd.o dns_dtda.o dns_ip.o dns_ipq.o \
- dns_mx.o dns_name.o dns_nd.o dns_packet.o dns_random.o dns_rcip.o \
- dns_rcrw.o dns_resolve.o dns_sortip.o dns_transmit.o dns_txt.o dns_cname.o
diff --git a/dnsstub/README.md b/dnsstub/README.md
deleted file mode 100644
index 95cd11c..0000000
--- a/dnsstub/README.md
+++ /dev/null
@@ -1,171 +0,0 @@
-/*! \mainpage
-
-Stub Resolver
-=============
-
-Simple DJBDNS stub-resolver based on 'djbdns-1.05(IPv6)' allowing for each
-calling application individually to include up to 16 DNSCACHEIP(s)
-as DNS forwarding/resolving servers to be tried sequentially.
-
-IP Addresses
-------------
-
-Here,
- - global IPv6,
- - IPv6 ULA, and
- - IPv6 LLU addresses with a given Interface-Id
-can be specified. The IPv4 format could be either a
- - legacy dotted-decimal or a
- - IPv4-mapped IPv6 address.
-
-In any case, compactified IPv6 addresses are understood.
-IPv4/IPv6 addresses in brackets are understood by dns_ip.
-
-Resolver Call
--------------
-
-If $DNSCACHEIP is not provided as environment variable, the stub-resolver
-will use the system-wide
- - /etc/resolv.conf
-file; however now without the capability for IPv6 LLU addresses.
-While IPv4-mapped IPv6 addresses are supported here by default as well,
-care has to taken not to jeopardize other client's usage.
-
-Name Qualification
-------------------
-
-If provided, the stub-resolver uses either a system-wide configuration file
- - /etc/dnsrewritefile or assumes this file to available as given in
- - $DNSREWRITEFILE
-in order to define persistent mapping-rules of local domain names to public
-ones (for lookup) or IP addresses (for direct matching).
-
-Well-known domain names 'localhost', 'ip4-loopback' and 'ip6-loopback'
-are handled locally, thus no DNS query is used (RFC 6761).
-'localhost' is advertised as '::1' and '::ff:127.0.0.1' in it's native
-IPv6 format. It is up to the caller to convert the IPv6-mapped IPv4
-address to the IPv4 format.
-
-Local domain names can be alternatively specified (per application) using
-the environment variable
- - $LOCALDOMAIN
-to be appended to unqualified hostnames dynamically. This is roughly equivalent
-with the 'search' string in /etc/resolv. Several domains names may be
-specified within $LOCALDOMAIN separated by blanks.
-
-See: https://cr.yp.to/djbdns/qualify.html
-
-
-Specific DNS Record type lookup
--------------------------------
-
-* dns_ip (A, AAAAA)
-* dns_name (PTR)
-* dns_cname (CNAME)
-* dns_txt (TXT) -- now considering several 'labels'
-* dns_mx (MX)
-
-
-Internals
----------
-
-* UDP message size:
-Unlike other implementations, this DNS stub-resolver supports UDP packet
-sizes up to 1028 byte without the need for (E)DNS0 packet enhancements.
-
-* DNS UDP query retrials:
-In case the NS is not able to initally reply to the query,
-it is retried again at the intervalls {1, 2, 4, 8, 16} secs.
-
-* DNS name qualification (dns_ip_qualify):
-Well-known domain names are qualified locally without invoking a DNS query
-while handling IPv4 and IPv6 addresses separately.
-
-* NS qualification/sorting for NS replies:
-NS qualification is not supported (yet), thus we use a randomly sorted
-list of NS IP addresses.
-
-* Query/Reply to/from DNS Cache servers/forwarders:
-Neither message (CurveDNS) nor transport layer (TLS) encryption is provided;
-the sub-resolver 'trusts' it's upstream caches/forwarders. We recommend to
-setup communication on private IPv4/IPv6 addresses; if applicable.
-
-* DNS TXT Records:
-The label substructure is now recognized in the RDATA section;
-each label may have the size of 255 byte.
-The length information is excluded from the output.
-Only printable characters are recognized in the output.
-
-* Return Codes:
-Different from DJB's initial routines, the DNS front-end routines
- dns_cname*, dns_ip*, dns_mx*, dns_name*, dns dns_txt*
-return now the number of replies received (not bytes!).
-Thus, three cases need to be considered:
-
- - rc < 0: Problem occured (SOFTFAIL, HARDFAIL)
- - rc = 0: No answer obtained (but query was successful) = NXDOMAIN
- - rc > 0: rc answers received; positive reply
-
-For return codes < 0, the following conventions have been applied:
-
- include/dnsresolv.h
-
-\#define DNS_NXD 0
-\#define DNS_MEM -1
-\#define DNS_ERR -2 /* parsing errors and others */
-\#define DNS_COM -3 /* (socket) communication errors */
-\#define DNS_INT -4 /* internal errors */
-\#define DNS_SOFT -5 /* either -2 or -3 */
-\#define DNS_HARD -6 /* CNAME loop problem */
-
-The modification of the return code is typically not problematic,
-since mostly just rc = -1 is checked.
-
-In the future, these return codes are subject of change.
-Thus, instead of
-
- if (dns_XX(...) == -1)
-
-one shoud use the more general syntax
-
- if (dns_XX(...) < 0)
-
-to check for 'negative' results, allowing further actions
-and refinements given the calling sequence.
-
-
-
-Environment Variables Read
---------------------------
-
-$DNSCACHEPIP The upstream resolver's IP[v4|v6] addresses (up to 32).
- IPv6 LLU addresses may be suffixed with the interface name.
-$DNSREWRITEFILE Alternate location for the system-wide
- /etc/dnsrewrite
-file
-$LOCALDOMAIN Additional local domain name appended to unqualified
- hostnames dynamically.
-
-Sample for the file /etc/dnsrewrite:
-
-\#annything.local -> me
-\-.example.com:me
-\# me -> 127.0.0.1
-\=me:127.0.0.1
-\# any.name.a -> any.name.af.mil
-\*.a:.af.mil
-\# any-name-without-dots -> any-name-without-dots.heaven.af.mil
-\?:.heaven.af.mil
-\# remove trailing dot
-\*.:
-
-and DJB's explanations are given here:
-
-Instructions are followed in order, each at most once. There are four types of instructions:
-
-\=post:new means that the host name post is replaced by new.
-\*post:new means that any name of the form prepost is replaced by prenew.
-\?post:new means that any name of the form prepost, where pre does not contain dots or brackets, is replaced by prenew.
-\-post:new means that any name of the form prepost is replaced by new.
-
-Erwin Hoffmann, June 2023.
diff --git a/dnsstub/TARGETS b/dnsstub/TARGETS
deleted file mode 100644
index 62f40be..0000000
--- a/dnsstub/TARGETS
+++ /dev/null
@@ -1,18 +0,0 @@
-dns_cname.o
-dns_dfd.o
-dns_domain.o
-dns_dtda.o
-dns_ip.o
-dns_ipq.o
-dns_mx.o
-dns_name.o
-dns_nd.o
-dns_packet.o
-dns_random.o
-dns_rcip.o
-dns_rcrw.o
-dns_resolve.o
-dns_sortip.o
-dns_transmit.o
-dns_txt.o
-dnsresolv.a
diff --git a/dnsstub/dns_cname.c b/dnsstub/dns_cname.c
deleted file mode 100644
index 408949a..0000000
--- a/dnsstub/dns_cname.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include "stralloc.h"
-#include "uint_t.h"
-#include "byte.h"
-#include "ip.h"
-#include "case.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_cname.c
- @author feh
- @brief DNS cname lookup
-*/
-
-static char *q = 0;
-
-int dns_cname_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- uint16 numanswers;
- uint16 datalen;
- int ranswers = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_CNAME))
- if (byte_equal(header + 2,2,DNS_C_IN)) {
- if (!dns_packet_getname(buf,len,pos,&q)) return DNS_ERR;
- if (dns_domain_todot_cat(out,q) <= 0) return DNS_ERR;
- }
- pos += datalen;
- ++ranswers;
- }
-
- return ranswers;
-}
-
-int dns_cname(stralloc *out,stralloc *fqdn)
-{
- int rc;
-
- if (dns_domain_fromdot(&q,fqdn->s,fqdn->len) <= 0) return DNS_ERR;
- if (dns_resolve(q,DNS_T_CNAME) < 0) return DNS_ERR;
- if ((rc = dns_cname_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
- if (case_equals(out->s,fqdn->s)) rc = -6; // loop DNS_HARD
-
- return rc;
-}
diff --git a/dnsstub/dns_dfd.c b/dnsstub/dns_dfd.c
deleted file mode 100644
index 756a1f8..0000000
--- a/dnsstub/dns_dfd.c
+++ /dev/null
@@ -1,76 +0,0 @@
-#include "error.h"
-#include "alloc.h"
-#include "byte.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_dfd.c
- @author djb
- @source ucspi-tcp
- @brief domain name qualification (domain from dot)
-*/
-
-int dns_domain_fromdot(char **out,const char *buf,unsigned int n)
-{
- char label[63];
- unsigned int labellen = 0; /* <= sizeof label */
- char name[255];
- unsigned int namelen = 0; /* <= sizeof name */
- char ch;
- char *x;
-
- errno = EPROTO;
-
- for (;;) {
- if (!n) break;
- ch = *buf++; --n;
- if (ch == '.') {
- if (labellen) {
- if (namelen + labellen + 1 > sizeof(name)) return 0;
- name[namelen++] = labellen;
- byte_copy(name + namelen,labellen,label);
- namelen += labellen;
- labellen = 0;
- }
- continue;
- }
- if (ch == '\\') { // octal -> decimal
- if (!n) break;
- ch = *buf++; --n;
- if ((ch >= '0') && (ch <= '7')) {
- ch -= '0';
- if (n && (*buf >= '0') && (*buf <= '7')) {
- ch <<= 3;
- ch += *buf - '0';
- ++buf; --n;
- if (n && (*buf >= '0') && (*buf <= '7')) {
- ch <<= 3;
- ch += *buf - '0';
- ++buf; --n;
- }
- }
- }
- }
- if (labellen >= sizeof(label)) return 0;
- label[labellen++] = ch;
- }
-
- if (labellen) {
- if (namelen + labellen + 1 > sizeof(name)) return 0;
- name[namelen++] = labellen;
- byte_copy(name + namelen,labellen,label);
- namelen += labellen;
- labellen = 0;
- }
-
- if (namelen + 1 > sizeof(name)) return 0;
- name[namelen++] = 0;
-
- x = alloc(namelen);
- if (!x) return DNS_MEM;
- byte_copy(x,namelen,name);
-
- if (*out) alloc_free(*out);
- *out = x;
- return 1;
-}
diff --git a/dnsstub/dns_domain.c b/dnsstub/dns_domain.c
deleted file mode 100644
index 654a827..0000000
--- a/dnsstub/dns_domain.c
+++ /dev/null
@@ -1,80 +0,0 @@
-#include "alloc.h"
-#include "case.h"
-#include "byte.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_domain.c
- @author djb
- @source ucspi-tcp
- @brief domain qualification
-*/
-
-unsigned int dns_domain_length(const char *dn)
-{
- const char *x;
- unsigned char c;
-
- x = dn;
- while ((c = *x++))
- x += (unsigned int) c;
- return x - dn;
-}
-
-void dns_domain_free(char **out)
-{
- if (*out) {
- alloc_free(*out);
- *out = 0;
- }
-}
-
-int dns_domain_copy(char **out,const char *in)
-{
- unsigned int len;
- char *x;
-
- len = dns_domain_length(in);
- x = alloc(len);
- if (!x) return 0;
- byte_copy(x,len,in);
- if (*out) alloc_free(*out);
- *out = x;
- return 1;
-}
-
-int dns_domain_equal(const char *dn1,const char *dn2)
-{
- unsigned int len;
-
- len = dns_domain_length(dn1);
- if (len != dns_domain_length(dn2)) return 0;
-
- if (case_diffb((char *)dn1,len,(char *)dn2)) return 0; /* safe since 63 < 'A' */
- return 1;
-}
-
-int dns_domain_suffix(const char *big,const char *little)
-{
- unsigned char c;
-
- for (;;) {
- if (dns_domain_equal(big,little)) return 1;
- c = *big++;
- if (!c) return 0;
- big += c;
- }
-}
-
-unsigned int dns_domain_suffixpos(const char *big,const char *little)
-{
- const char *orig = big;
- unsigned char c;
-
- for (;;) {
- if (dns_domain_equal(big,little)) return big - orig;
- c = *big++;
- if (!c) return 0;
- big += c;
- }
-}
diff --git a/dnsstub/dns_dtda.c b/dnsstub/dns_dtda.c
deleted file mode 100644
index 38358a2..0000000
--- a/dnsstub/dns_dtda.c
+++ /dev/null
@@ -1,43 +0,0 @@
-#include "stralloc.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_dtda.c
- @author djb
- @source ucspi-tcp
- @brief domain to dot append
-*/
-
-int dns_domain_todot_cat(stralloc *out,const char *d)
-{
- char ch;
- char ch2;
- unsigned char ch3;
- char buf[4];
-
- if (!*d)
- return stralloc_append(out,".");
-
- for (;;) {
- ch = *d++;
- while (ch--) {
- ch2 = *d++;
- if ((ch2 >= 'A') && (ch2 <= 'Z')) ch2 += 32; // FQDN -> lowercase
- if (((ch2 >= 'a') && (ch2 <= 'z')) ||
- ((ch2 >= '0') && (ch2 <= '9')) ||
- (ch2 == '-') || (ch2 == '_')) {
- if (!stralloc_append(out,&ch2)) return DNS_MEM;
- }
- else { // decimal -> octal
- ch3 = ch2;
- buf[3] = '0' + (ch3 & 7); ch3 >>= 3;
- buf[2] = '0' + (ch3 & 7); ch3 >>= 3;
- buf[1] = '0' + (ch3 & 7);
- buf[0] = '\\';
- if (!stralloc_catb(out,buf,4)) return DNS_MEM;
- }
- }
- if (!*d) return 1;
- if (!stralloc_append(out,".")) return DNS_MEM;
- }
-}
diff --git a/dnsstub/dns_ip.c b/dnsstub/dns_ip.c
deleted file mode 100644
index f89728c..0000000
--- a/dnsstub/dns_ip.c
+++ /dev/null
@@ -1,198 +0,0 @@
-#include "stralloc.h"
-#include "uint_t.h"
-#include "byte.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_ip.c
- @author djb, fefe, feh
- @source ucspi-tcp6
- @brief DNS IP query
-*/
-
-static char *q = 0;
-
-int dns_ip4_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- uint16 numanswers;
- uint16 datalen;
- int ranswers = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_A))
- if (byte_equal(header + 2,2,DNS_C_IN))
- if (datalen == 4) {
- if (!dns_packet_copy(buf,len,pos,header,4)) return DNS_ERR;
- if (!stralloc_catb(out,header,4)) return DNS_MEM;
- }
- pos += datalen;
- ++ranswers;
- }
-
- dns_sortip4(out->s,out->len);
- return ranswers;
-}
-
-int dns_ip4(stralloc *out,stralloc *fqdn)
-{
- unsigned int i;
- char code = 0;
- int dot = 0;
- char ch;
- char ip[4];
- int r;
- int rc = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
- if (!stralloc_readyplus(fqdn,1)) return DNS_MEM;
-
- fqdn->s[fqdn->len] = 0; /* test FQDN string */
- for (i = 1; i < fqdn->len; i++) {
- if (fqdn->s[i] >= '_') { code = 127; break; }
- if (fqdn->s[i] == '.') dot++;
- }
-
- if (code != 127 && dot == 3) /* if FQDN is just IPv4 */
- if (ip4_scan(fqdn->s,ip) || ip4_scanbracket(fqdn->s,ip)) {
- if (!stralloc_copyb(out,ip,4)) return DNS_MEM;
- return 1;
- }
-
- code = 0;
- for (i = 0; i <= fqdn->len; ++i) {
- if (i < fqdn->len)
- ch = fqdn->s[i];
- else
- ch = '.';
-
- if ((ch == '[') || (ch == ']')) continue;
- if (ch == '.') {
- if (!stralloc_append(out,&code)) return DNS_MEM;
- code = 0;
- continue;
- }
- if ((ch >= '0') && (ch <= '9')) {
- code *= 10;
- code += ch - '0';
- continue;
- }
-
- if (dns_domain_fromdot(&q,fqdn->s,fqdn->len) <= 0) return DNS_ERR; // fdqn -> A query -> response
- if (dns_resolve(q,DNS_T_A) >= 0) {
- if ((r = dns_ip4_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
- rc += r;
- }
-
- return rc;
- }
-
- out->len &= ~3;
- return 0;
-}
-
-int dns_ip6_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[16];
- uint16 numanswers;
- uint16 datalen;
- int ranswers = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_AAAA)) {
- if (byte_equal(header + 2,2,DNS_C_IN))
- if (datalen == 16) {
- if (!dns_packet_copy(buf,len,pos,header,16)) return DNS_ERR;
- if (!stralloc_catb(out,header,16)) return DNS_MEM;
- }
- } else if (byte_equal(header,2,DNS_T_A))
- if (byte_equal(header + 2,2,DNS_C_IN))
- if (datalen == 4) {
- byte_copy(header,12,V4mappedprefix);
- if (!dns_packet_copy(buf,len,pos,header + 12,4)) return DNS_ERR;
- if (!stralloc_catb(out,header,16)) return DNS_MEM;
- }
- pos += datalen;
- ++ranswers;
- }
-
- dns_sortip6(out->s,out->len);
- return ranswers;
-}
-
-int dns_ip6(stralloc *out,stralloc *fqdn)
-{
- unsigned int i;
- char code;
- char ch;
- char ip[16];
- int r;
- int rc = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
- if (!stralloc_readyplus(fqdn,1)) return DNS_MEM;
-
- fqdn->s[fqdn->len] = 0; /* if FQDN is just IPv6 */
- if (ip6_scan(fqdn->s,ip) || ip6_scanbracket(fqdn->s,ip)) {
- if (!stralloc_copyb(out,ip,16)) return DNS_MEM;
- return 1;
- }
-
- code = 0;
- for (i = 0; i <= fqdn->len; ++i) {
- if (i < fqdn->len)
- ch = fqdn->s[i];
- else
- ch = '.';
-
- if ((ch == '[') || (ch == ']')) continue;
- if (ch == '.') {
- if (!stralloc_append(out,&code)) return DNS_MEM;
- code = 0;
- continue;
- }
- if ((ch >= '0') && (ch <= '9')) {
- code *= 10;
- code += ch - '0';
- continue;
- }
-
- if (dns_domain_fromdot(&q,fqdn->s,fqdn->len) <= 0) return DNS_ERR; // fqdn -> AAAA query -> response
- if (dns_resolve(q,DNS_T_AAAA) >= 0) {
- if ((r = dns_ip6_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
- rc += r;
- }
-
- return rc;
- }
-
- out->len &= ~3;
- return 0;
-}
diff --git a/dnsstub/dns_ipq.c b/dnsstub/dns_ipq.c
deleted file mode 100644
index 26c3818..0000000
--- a/dnsstub/dns_ipq.c
+++ /dev/null
@@ -1,236 +0,0 @@
-#include "case.h"
-#include "byte.h"
-#include "str.h"
-#include "stralloc.h"
-#include "dnsresolv.h"
-#include "socket_if.h"
-#include "ip.h"
-
-/**
- @file dns_ipq.c
- @author djb, feh
- @source ucspi-tcp
- @brief DNS hostname qualification for ipv4 and ipv6
-*/
-
-/**
- @fn int doit -> @return number of added chars to name
-*/
-static int doit(stralloc *work,const char *rule)
-{
- char ch;
- unsigned int colon;
- unsigned int prefixlen;
-
- ch = *rule++;
- if ((ch != '?') && (ch != '=') && (ch != '*') && (ch != '-')) return 1;
- 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 (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;
- }
-
- work->len = prefixlen;
- if (ch == '-') work->len = 0;
- 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)
-{
- unsigned int i;
- unsigned int j;
- unsigned int plus;
- unsigned int fqdnlen;
- int rc = 0;
-
- 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;
- i = j + 1;
- }
-
- fqdnlen = fqdn->len;
- 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);
- fqdn->len = plus + j;
- if (rc += dns_ip4(ipout,fqdn) < 0) return DNS_ERR;
- i += j;
- if (i >= fqdnlen) return rc;
- ++i;
- }
- return 0;
-}
-
-/** @fn int dns_ip4_qualify -> @return number of IPv4 addresss qualified */
-
-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 (dns_resolvconfrewrite(&rules) < 0) return DNS_INT;
- 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)
-{
- unsigned int i;
- unsigned int j;
- unsigned int plus;
- unsigned int fqdnlen;
- int rc = 0;
-
- 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;
- i = j + 1;
- }
-
- fqdnlen = fqdn->len;
- 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);
- fqdn->len = plus + j;
- if ((rc += dns_ip6(ipout,fqdn)) < 0) return DNS_ERR;
- i += j;
- if (i >= fqdnlen) return rc;
- ++i;
- }
- return 0;
-}
-
-/** @fn int dns_ip6_qualify -> @return number of IPv6 addresss qualified */
-
-int dns_ip6_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 (dns_resolvconfrewrite(&rules) < 0) return DNS_INT;
- 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)
-{
- unsigned int i;
- unsigned int j;
- unsigned int k;
- unsigned int plus;
- unsigned int fqdnlen;
- stralloc tmp = {0};
- int rc = 0;
-
- 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;
- i = j + 1;
- }
-
- fqdnlen = fqdn->len;
- plus = byte_chr(fqdn->s,fqdnlen,'+');
- if (plus >= fqdnlen) {
- 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;
- rc++;
- }
- }
- return rc;
- }
-
- i = plus + 1;
- for (;;) {
- 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) {
- 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;
- rc++;
- }
- }
-
- if (rc < 0) return DNS_ERR;
- i += j;
- if (i >= fqdnlen) return rc;
- ++i;
- }
- return 0;
-}
-
-/** @fn int dns_ip_qualify_localhost -> @return number of IP addresss */
-
-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;
- 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,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 (!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 r;
- static stralloc rules;
-
- 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);
-}
diff --git a/dnsstub/dns_mx.c b/dnsstub/dns_mx.c
deleted file mode 100644
index c0845ef..0000000
--- a/dnsstub/dns_mx.c
+++ /dev/null
@@ -1,63 +0,0 @@
-#include "stralloc.h"
-#include "byte.h"
-#include "uint_t.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_mx.c
- @author djb
- @source qmail
- @brief dns MX query
- @param (on output) stralloc out
-*/
-
-static char *q = 0;
-
-int dns_mx_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- char pref[2];
- uint16 numanswers;
- uint16 datalen;
- int ranswers = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_MX))
- if (byte_equal(header + 2,2,DNS_C_IN)) {
- if (!dns_packet_copy(buf,len,pos,pref,2)) return DNS_ERR;
- if (!dns_packet_getname(buf,len,pos + 2,&q)) return DNS_ERR;
- if (!stralloc_catb(out,pref,2)) return DNS_MEM;
- if (dns_domain_todot_cat(out,q) <= 0) return DNS_ERR;
- if (!stralloc_0(out)) return DNS_MEM;
- }
- pos += datalen;
- ++ranswers;
- }
-
- return ranswers;
-}
-
-int dns_mx(stralloc *out,const stralloc *fqdn)
-{
- int rc = 0;
-
- if (dns_domain_fromdot(&q,fqdn->s,fqdn->len) <= 0) return DNS_ERR;
- if (dns_resolve(q,DNS_T_MX) >= 0) {
- if ((rc = dns_mx_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
- }
-
- return rc;
-}
diff --git a/dnsstub/dns_name.c b/dnsstub/dns_name.c
deleted file mode 100644
index 0723a8f..0000000
--- a/dnsstub/dns_name.c
+++ /dev/null
@@ -1,80 +0,0 @@
-#include "stralloc.h"
-#include "uint_t.h"
-#include "byte.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_name.c
- @author djb, fefe, feh
- @source ucspi-tcp
- @brief DNS name query (ptr)
-*/
-
-static char *q = 0;
-
-int dns_name_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- uint16 numanswers;
- uint16 datalen;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_PTR))
- if (byte_equal(header + 2,2,DNS_C_IN)) {
- if (!dns_packet_getname(buf,len,pos,&q)) return DNS_ERR;
- if (dns_domain_todot_cat(out,q) <= 0) return DNS_ERR;
- return 1;
- }
- pos += datalen;
- }
-
- return 0;
-}
-
-int dns_name4(stralloc *out,const char ip[4])
-{
- int rc;
- char name[DNS_NAME4_DOMAIN];
-
- dns_name4_domain(name,ip);
- if (dns_resolve(name,DNS_T_PTR) < 0) return DNS_ERR;
- if ((rc = dns_name_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
-
- return rc;
-}
-
-int dns_name6(stralloc *out,const char ip[16])
-{
- int rc;
- char name[DNS_NAME6_DOMAIN];
-
- dns_name6_domain(name,ip);
- if (dns_resolve(name,DNS_T_PTR) < 0) return DNS_ERR;
- if ((rc = dns_name_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
-
- return rc;
-}
-
-int dns_name(stralloc *out,const char ip[16])
-{
- if (ip6_isv4mapped(ip))
- return dns_name4(out,ip+12);
- else
- return dns_name6(out,ip);
-}
diff --git a/dnsstub/dns_nd.c b/dnsstub/dns_nd.c
deleted file mode 100644
index 6ce8ed9..0000000
--- a/dnsstub/dns_nd.c
+++ /dev/null
@@ -1,48 +0,0 @@
-#include "byte.h"
-#include "fmt.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_nd.c
- @autor djb, fefe
- @source ucspi-tcp
- @brief DNS domain name for ip (wire format)
-*/
-
-int dns_name4_domain(char name[DNS_NAME4_DOMAIN],const char ip[4])
-{
- unsigned int namelen;
- unsigned int i;
-
- namelen = 0;
- i = fmt_ulong(name + namelen + 1,(unsigned long) (unsigned char) ip[3]);
- name[namelen++] = i;
- namelen += i;
- i = fmt_ulong(name + namelen + 1,(unsigned long) (unsigned char) ip[2]);
- name[namelen++] = i;
- namelen += i;
- i = fmt_ulong(name + namelen + 1,(unsigned long) (unsigned char) ip[1]);
- name[namelen++] = i;
- namelen += i;
- i = fmt_ulong(name + namelen + 1,(unsigned long) (unsigned char) ip[0]);
- name[namelen++] = i;
- namelen += i;
- byte_copy(name + namelen,14,"\7in-addr\4arpa\0");
- return namelen+14;
-}
-
-int dns_name6_domain(char name[DNS_NAME6_DOMAIN],const char ip[16])
-{
- unsigned int j;
-
- for (j = 0; j < 16; j++) {
- name[j * 4] = 1;
- name[j * 4 + 1] = tohex(ip[15 - j] & 15);
- name[j * 4 + 2] = 1;
- name[j * 4 + 3] = tohex((unsigned char)ip[15 - j] >> 4);
- }
- byte_copy(name + 4 * 16,10,"\3ip6\4arpa\0");
- return 4 * 16 + 10;
-}
-
diff --git a/dnsstub/dns_packet.c b/dnsstub/dns_packet.c
deleted file mode 100644
index ce322ea..0000000
--- a/dnsstub/dns_packet.c
+++ /dev/null
@@ -1,85 +0,0 @@
-#include "error.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_packet.c
- @author djb
- @source ucspi-tcp
- @brief DNS low level packet routine
- @brief DNS should have used LZ77 instead of its own sophomoric compression algorithm.
-*/
-
-unsigned int dns_packet_copy(const char *buf,unsigned int len,unsigned int pos,char *out,unsigned int outlen)
-{
- while (outlen) {
- if (pos >= len) { errno = EPROTO; return 0; }
- *out = buf[pos++];
- ++out; --outlen;
- }
- return pos;
-}
-
-unsigned int dns_packet_skipname(const char *buf,unsigned int len,unsigned int pos)
-{
- unsigned char ch;
-
- for (;;) {
- if (pos >= len) break;
- ch = buf[pos++];
- if (ch >= 192) return pos + 1;
- if (ch >= 64) break;
- if (!ch) return pos;
- pos += ch;
- }
-
- errno = EPROTO;
- return 0;
-}
-
-unsigned int dns_packet_getname(const char *buf,unsigned int len,unsigned int pos,char **d)
-{
- unsigned int loop = 0;
- unsigned int state = 0;
- unsigned int firstcompress = 0;
- unsigned int where;
- unsigned char ch;
- char name[255];
- unsigned int namelen = 0;
-
- for (;;) {
- if (pos >= len) goto PROTO;
- ch = buf[pos++];
- if (++loop >= 1000) goto PROTO;
-
- if (state) {
- if (namelen + 1 > sizeof(name)) goto PROTO;
- name[namelen++] = ch;
- --state;
- } else {
- while (ch >= 192) {
- where = ch; where -= 192; where <<= 8;
- if (pos >= len) goto PROTO;
- ch = buf[pos++];
- if (!firstcompress) firstcompress = pos;
- pos = where + ch;
- if (pos >= len) goto PROTO;
- ch = buf[pos++];
- if (++loop >= 1000) goto PROTO;
- }
- if (ch >= 64) goto PROTO;
- if (namelen + 1 > sizeof(name)) goto PROTO;
- name[namelen++] = ch;
- if (!ch) break;
- state = ch;
- }
- }
-
- if (!dns_domain_copy(d,name)) return 0;
-
- if (firstcompress) return firstcompress;
- return pos;
-
- PROTO:
- errno = EPROTO;
- return 0;
-}
diff --git a/dnsstub/dns_random.c b/dnsstub/dns_random.c
deleted file mode 100644
index 200cd6c..0000000
--- a/dnsstub/dns_random.c
+++ /dev/null
@@ -1,70 +0,0 @@
-#include <unistd.h>
-#include "taia.h"
-#include "uint_t.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_random.c
- @author djb
- @source ucspi-tcp
- @brief random use of DNS resolvers given their IP
-*/
-
-static uint32 seed[32];
-static uint32 in[12];
-static uint32 out[8];
-static int outleft = 0;
-
-#define ROTATE(x,b) (((x) << (b)) | ((x) >> (32 - (b))))
-#define MUSH(i,b) x = t[i] += (((x ^ seed[i]) + sum) ^ ROTATE(x,b));
-
-static void surf(void)
-{
- uint32 t[12]; uint32 x; uint32 sum = 0;
- int r; int i; int loop;
-
- for (i = 0; i < 12; ++i) t[i] = in[i] ^ seed[12 + i];
- for (i = 0; i < 8; ++i) out[i] = seed[24 + i];
- x = t[11];
- for (loop = 0; loop < 2; ++loop) {
- for (r = 0; r < 16; ++r) {
- sum += 0x9e3779b9;
- MUSH(0,5) MUSH(1,7) MUSH(2,9) MUSH(3,13)
- MUSH(4,5) MUSH(5,7) MUSH(6,9) MUSH(7,13)
- MUSH(8,5) MUSH(9,7) MUSH(10,9) MUSH(11,13)
- }
- for (i = 0; i < 8; ++i) out[i] ^= t[i + 4];
- }
-}
-
-void dns_random_init(const char data[128])
-{
- int i;
- struct taia t;
- char tpack[16];
-
- for (i = 0; i < 32; ++i)
- uint32_unpack((char *)data + 4 * i,seed + i);
-
- taia_now(&t);
- taia_pack(tpack,&t);
- for (i = 0; i < 4; ++i)
- uint32_unpack(tpack + 4 * i,in + 4 + i);
-
- in[8] = getpid();
- in[9] = getppid();
- /* more space in 10 and 11, but this is probably enough */
-}
-
-unsigned int dns_random(unsigned int n)
-{
- if (!n) return 0;
-
- if (!outleft) {
- if (!++in[0]) if (!++in[1]) if (!++in[2]) ++in[3];
- surf();
- outleft = 8;
- }
-
- return out[--outleft] % n;
-}
diff --git a/dnsstub/dns_rcip.c b/dnsstub/dns_rcip.c
deleted file mode 100644
index 93b0daa..0000000
--- a/dnsstub/dns_rcip.c
+++ /dev/null
@@ -1,114 +0,0 @@
-#include "taia.h"
-#include "readclose.h"
-#include "byte.h"
-#include "ip.h"
-#include "env.h"
-#include "dnsresolv.h"
-#include "socket_if.h"
-
-/**
- @file dns_rcip.c
- @author djb, fefe, feh
- @source ucspi-tcp
- @brief DNS receive for query
-*/
-
-static stralloc data = {0};
-static stralloc ifname = {0};
-
-static int init(char ip[QUERY_MAXIPLEN],uint32 sid[QUERY_MAXNS])
-{
- int i;
- int j;
- int k = 0;
- int iplen = 0;
- char *x;
- char ip4[4];
-
-/* Read (compactified) IPv4|v6 addresses of resolvers
- Store them in array IP with fixed length :
- ip(64) -> 16 IPv4 addresses (not used anymore)
- ip(512) -> 16*2 IPv6 addresses (we use IPv4 mapped IPv6 addresses)
- sid(32) -> the scope for the respective IPv6 or 0
-*/
- for (i = 0; i < QUERY_MAXNS; ++i) sid[i] = 0;
-
- x = env_get("DNSCACHEIP");
- if (x)
- while (iplen <= 240 && *x != '\0') {
- if (*x == ' ')
- ++x;
- else
- if ((i = ip6_ifscan(x,ip + iplen,&ifname))) {
- if (ifname.len > 2) sid[k] = socket_getifidx(ifname.s);
- iplen += 16; k++;
- if (*(x += i) == '\0') break;
- }
- }
-
- if (!iplen) {
- i = openreadclose("/etc/resolv.conf",&data,64);
- if (i == -1) return DNS_INT;
- if (i) {
- if (!stralloc_append(&data,"\n")) return DNS_MEM;
- i = 0;
- for (j = 0; j < data.len; ++j)
- if (data.s[j] == '\n') {
- if (byte_equal("nameserver ",11,data.s + i) || byte_equal("nameserver\t",11,data.s + i)) {
- i += 10;
- while ((data.s[i] == ' ') || (data.s[i] == '\t'))
- i++;
- if (iplen <= 240) {
- data.s[j] = '\0'; /* ip6_ifscan needs terminated string on input */
- if (ip4_scan(data.s + i,ip4)) {
- if (byte_equal(ip4,4,"\0\0\0\0"))
- byte_copy(ip4,4,"\177\0\0\1");
- byte_copy(ip + iplen,12,V4mappedprefix);
- byte_copy(ip + iplen + 12,4,ip4);
- sid[k] = 0; iplen += 16; k++;
- } else if (ip6_ifscan(data.s + i,ip + iplen,&ifname)) {
- if (ifname.len > 2) sid[k] = socket_getifidx(ifname.s);
- iplen += 16; k++;
- }
- }
- }
- i = j + 1;
- }
- }
- }
-
- if (!iplen) {
- byte_copy(ip,16,"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1");
- iplen = 16;
- }
- byte_zero(ip + iplen,QUERY_MAXIPLEN - iplen);
- return 0;
-}
-
-static int ok = 0;
-static unsigned int uses;
-static struct taia deadline;
-static char ip[QUERY_MAXIPLEN]; /* defined if ok */
-static uint32 scopes[QUERY_MAXNS];
-
-int dns_resolvconfip(char s[QUERY_MAXIPLEN],uint32 scope[QUERY_MAXNS])
-{
- struct taia now;
-
- taia_now(&now);
- if (taia_less(&deadline,&now)) ok = 0;
- if (!uses) ok = 0;
-
- if (!ok) {
- if (init(ip,scopes) < 0) return DNS_INT;
- taia_uint(&deadline,600);
- taia_add(&deadline,&now,&deadline);
- uses = 10000;
- ok = 1;
- }
-
- --uses;
- byte_copy(s,QUERY_MAXIPLEN,ip);
- byte_copy(scope,128,scopes);
- return 0;
-}
diff --git a/dnsstub/dns_rcrw.c b/dnsstub/dns_rcrw.c
deleted file mode 100644
index 4633fed..0000000
--- a/dnsstub/dns_rcrw.c
+++ /dev/null
@@ -1,141 +0,0 @@
-#include <unistd.h>
-#include "taia.h"
-#include "env.h"
-#include "byte.h"
-#include "str.h"
-#include "readclose.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_rcrw.c
- @author djb
- @source ucspi-tcp
- @brief DNS receive rewrite
-*/
-
-static stralloc data = {0};
-
-static int init(stralloc *rules)
-{
- char host[256];
- const char *x;
- int i;
- int j;
- int k;
-
- if (!stralloc_copys(rules,"")) return DNS_MEM;
-
- x = env_get("DNSREWRITEFILE");
- if (!x) x = "/etc/dnsrewrite";
-
- i = openreadclose(x,&data,64);
- if (i == -1) return DNS_INT;
-
- if (i) {
- if (!stralloc_append(&data,"\n")) return DNS_MEM;
- i = 0;
- for (j = 0; j < data.len; ++j)
- if (data.s[j] == '\n') {
- if (!stralloc_catb(rules,data.s + i,j - i)) return DNS_MEM;
- while (rules->len) {
- if (rules->s[rules->len - 1] != ' ')
- if (rules->s[rules->len - 1] != '\t')
- if (rules->s[rules->len - 1] != '\r')
- break;
- --rules->len;
- }
- if (!stralloc_0(rules)) return DNS_MEM;
- i = j + 1;
- }
- return 0;
- }
-
- x = env_get("LOCALDOMAIN");
- if (x) {
- if (!stralloc_copys(&data,x)) return DNS_MEM;
- if (!stralloc_append(&data," ")) return DNS_MEM;
- if (!stralloc_copys(rules,"?:")) return DNS_MEM;
- i = 0;
- for (j = 0; j < data.len; ++j)
- if (data.s[j] == ' ') {
- if (!stralloc_cats(rules,"+.")) return DNS_MEM;
- if (!stralloc_catb(rules,data.s + i,j - i)) return DNS_MEM;
- i = j + 1;
- }
- if (!stralloc_0(rules)) return DNS_MEM;
- if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
- if (!stralloc_0(rules)) return DNS_MEM;
- return 0;
- }
-
- i = openreadclose("/etc/resolv.conf",&data,64);
- if (i == -1) return DNS_INT;
-
- if (i) {
- if (!stralloc_append(&data,"\n")) return DNS_MEM;
- i = 0;
- for (j = 0; j < data.len; ++j)
- if (data.s[j] == '\n') {
- if (byte_equal("search ",7,data.s + i) ||
- byte_equal("search\t",7,data.s + i) ||
- byte_equal("domain ",7,data.s + i) ||
- byte_equal("domain\t",7,data.s + i)) {
- if (!stralloc_copys(rules,"?:")) return DNS_MEM;
- i += 7;
- while (i < j) {
- k = byte_chr(data.s + i,j - i,' ');
- k = byte_chr(data.s + i,k,'\t');
- if (!k) { ++i; continue; }
- if (!stralloc_cats(rules,"+.")) return DNS_MEM;
- if (!stralloc_catb(rules,data.s + i,k)) return DNS_MEM;
- i += k;
- }
- if (!stralloc_0(rules)) return DNS_MEM;
- if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
- if (!stralloc_0(rules)) return DNS_MEM;
- return 0;
- }
- i = j + 1;
- }
- }
-
- host[0] = 0;
- if (gethostname(host,sizeof(host)) == -1) return DNS_ERR;
- host[(sizeof(host)) - 1] = 0;
- i = str_chr(host,'.');
- if (host[i]) {
- if (!stralloc_copys(rules,"?:")) return DNS_MEM;
- if (!stralloc_cats(rules,host + i)) return DNS_MEM;
- if (!stralloc_0(rules)) return DNS_MEM;
- }
- if (!stralloc_cats(rules,"*.:")) return DNS_MEM;
- if (!stralloc_0(rules)) return DNS_MEM;
-
- return 0;
-}
-
-static int ok = 0;
-static unsigned int uses;
-static struct taia deadline;
-static stralloc rules = {0}; /* defined if ok */
-
-int dns_resolvconfrewrite(stralloc *out)
-{
- struct taia now;
-
- taia_now(&now);
- if (taia_less(&deadline,&now)) ok = 0;
- if (!uses) ok = 0;
-
- if (!ok) {
- if (init(&rules) < 0) return DNS_INT;
- taia_uint(&deadline,600);
- taia_add(&deadline,&now,&deadline);
- uses = 10000;
- ok = 1;
- }
-
- --uses;
- if (!stralloc_copy(out,&rules)) return DNS_MEM;
- return 0;
-}
diff --git a/dnsstub/dns_resolve.c b/dnsstub/dns_resolve.c
deleted file mode 100644
index bcc4308..0000000
--- a/dnsstub/dns_resolve.c
+++ /dev/null
@@ -1,39 +0,0 @@
-#include "iopause.h"
-#include "taia.h"
-#include "byte.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_resolve.c
- @author djb, fefe, feh
- @source ucspi-tcp
- @brief high-level DNS resolve function
-*/
-
-struct dns_transmit dns_resolve_tx = {0};
-
-int dns_resolve(const char *q,const char qtype[2])
-{
- struct taia stamp;
- struct taia deadline;
- char servers[QUERY_MAXIPLEN];
- uint32 scopes[QUERY_MAXNS];
- iopause_fd x[1];
- int r;
-
- if (dns_resolvconfip(servers,scopes) < 0) return DNS_INT;
-
- if (dns_transmit_start6(&dns_resolve_tx,servers,1,q,qtype,(const char *)V6localnet,scopes) < 0) return DNS_COM;
-
- for (;;) {
- taia_now(&stamp);
- taia_uint(&deadline,120);
- taia_add(&deadline,&deadline,&stamp);
- dns_transmit_io(&dns_resolve_tx,x,&deadline);
- iopause(x,1,&deadline,&stamp);
- r = dns_transmit_get(&dns_resolve_tx,x,&stamp);
- if (r < 0) return DNS_COM;
- if (r == 1) return 0;
- }
-}
diff --git a/dnsstub/dns_sortip.c b/dnsstub/dns_sortip.c
deleted file mode 100644
index 56742e0..0000000
--- a/dnsstub/dns_sortip.c
+++ /dev/null
@@ -1,45 +0,0 @@
-#include "byte.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_sortip.c
- @authors djb, fefe, feh
- @source ucspi-tcp6
- @brief random sort of DNS servers per IP
-*/
-
-/* XXX: sort servers by configurable notion of closeness? */
-/* XXX: pay attention to competence of each server? */
-/* XXX: pay attention to qualification (DNSSec, DNSCurve) of each server? */
-/* YYY: we use a randomly sorted list of NS; not depending on answer */
-
-void dns_sortip4(char *s,unsigned int n)
-{
- unsigned int i;
- char tmp[4];
-
- n >>= 2; /* 4 byte per IPv4 address */
- while (n > 1) {
- i = dns_random(n);
- --n;
- byte_copy(tmp,4,s + (i << 2));
- byte_copy(s + (i << 2),4,s + (n << 2));
- byte_copy(s + (n << 2),4,tmp);
- }
-}
-
-void dns_sortip6(char *s,unsigned int n)
-{
- unsigned int i;
- char tmp[16];
-
- n >>= 4; /* 16 byte per IPv4 address */
- while (n > 1) {
- i = dns_random(n);
- --n;
- byte_copy(tmp,16,s + (i << 4));
- byte_copy(s + (i << 4),16,s + (n << 4));
- byte_copy(s + (n << 4),16,tmp);
- }
-}
diff --git a/dnsstub/dns_transmit.c b/dnsstub/dns_transmit.c
deleted file mode 100644
index 2513565..0000000
--- a/dnsstub/dns_transmit.c
+++ /dev/null
@@ -1,436 +0,0 @@
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <unistd.h>
-#include "socket_if.h"
-#include "alloc.h"
-#include "error.h"
-#include "byte.h"
-#include "uint_t.h"
-#include "ip.h"
-#include "dnsresolv.h"
-
-/**
- @file dns_transmit.c
- @authors djb, fefe, feh
- @source qlibs
- @brief DNS query function
- @brief scope_ids[32] -> 32 LLU root servers supported
-*/
-
-#define DNSPORT 53
-
-uint32 scope_ids[QUERY_MAXNS];
-
-static const int timeouts[5] = { 1, 2, 4, 8, 16 }; /* quadratic, not exponentially */
-
-int getscopeid(const struct dns_transmit *d,const char *ip)
-{
- int i;
-
- if (byte_diff(ip,2,V6linklocal)) return 0;
- for (i = 0; i < QUERY_MAXNS; ++i)
- if (byte_equal(d->servers + 16 * i,16,ip))
- return scope_ids[i];
-
- return 0;
-}
-
-int serverwantstcp(const char *buf,unsigned int len)
-{
- char out[12];
-
- if (!dns_packet_copy(buf,len,0,out,12)) return 1;
- if (out[2] & 2) return 1;
-
- return 0;
-}
-
-int serverfailed(const char *buf,unsigned int len)
-{
- char out[12];
- unsigned int rcode;
-
- if (!dns_packet_copy(buf,len,0,out,12)) return 1;
- rcode = out[3];
- rcode &= 15;
- if (rcode && (rcode != 3)) { errno = EAGAIN; return 1; }
-
- return 0;
-}
-
-int irrelevant(const struct dns_transmit *d,const char *buf,unsigned int len)
-{
- char out[12];
- char *dn;
- unsigned int pos;
-
- pos = dns_packet_copy(buf,len,0,out,12); if (!pos) return 1;
- if (byte_diff(out,2,d->query + 2)) return 1;
- if (out[4] != 0) return 1;
- if (out[5] != 1) return 1;
-
- dn = 0;
- pos = dns_packet_getname(buf,len,pos,&dn); if (!pos) return 1;
- if (!dns_domain_equal(dn,d->query + 14)) { alloc_free(dn); return 1; }
- alloc_free(dn);
-
- pos = dns_packet_copy(buf,len,pos,out,4); if (!pos) return 1;
- if (byte_diff(out,2,d->qtype)) return 1;
- if (byte_diff(out + 2,2,DNS_C_IN)) return 1;
-
- return 0;
-}
-
-void packetfree(struct dns_transmit *d)
-{
- if (!d->packet) return;
- alloc_free(d->packet);
- d->packet = 0;
-}
-
-void queryfree(struct dns_transmit *d)
-{
- if (!d->query) return;
- alloc_free(d->query);
- d->query = 0;
-}
-
-void socketfree(struct dns_transmit *d)
-{
- if (!d->s1) return;
- close(d->s1 - 1);
- d->s1 = 0;
-}
-
-void dns_transmit_free(struct dns_transmit *d)
-{
- queryfree(d);
- socketfree(d);
- packetfree(d);
-}
-
-int randombind6(struct dns_transmit *d)
-{
- int j;
-
- for (j = 0; j < 10; ++j) {
- if (socket_bind6(d->s1 - 1,d->localip,1025 + dns_random(64510),d->scope_id) == 0)
- return 0;
- }
- if (socket_bind6(d->s1 - 1,d->localip,0,d->scope_id) == 0)
- return 0;
-
- return DNS_COM;
-}
-
-int randombind4(struct dns_transmit *d)
-{
- int j;
-
- for (j = 0; j < 10; ++j) {
- if (socket_bind4(d->s1 - 1,d->localip + 12,1025 + dns_random(64510)) == 0)
- return 0;
- }
- if (socket_bind4(d->s1 - 1,d->localip + 12,0) == 0)
- return 0;
-
- return DNS_COM;
-}
-
-int thisudp(struct dns_transmit *d)
-{
- const char *ip;
-
- socketfree(d);
-
- while (d->udploop < 5) {
- for (; d->curserver < QUERY_MAXNS; ++d->curserver) {
- ip = d->servers + 16 * d->curserver;
- if (byte_diff(ip,16,V6localnet)) {
- d->query[2] = dns_random(256);
- d->query[3] = dns_random(256);
-
- if (ip6_isv4mapped(ip)) {
- d->s1 = 1 + socket_udp4();
- if (!d->s1) { dns_transmit_free(d); return DNS_COM; }
- if (randombind4(d) < 0) { dns_transmit_free(d); return DNS_COM; }
- } else {
- d->s1 = 1 + socket_udp6();
- if (!d->s1) { dns_transmit_free(d); return DNS_COM; }
- if (randombind6(d) < 0) { dns_transmit_free(d); return DNS_COM; }
- }
-
- if (byte_equal(ip,2,V6linklocal) && !d->scope_id)
- d->scope_id = getscopeid(d,ip);
- if (socket_connect(d->s1 - 1,ip,DNSPORT,d->scope_id) == 0)
- if (send(d->s1 - 1,d->query + 2,d->querylen - 2,0) == d->querylen - 2) {
- struct taia now;
- taia_now(&now);
- taia_uint(&d->deadline,timeouts[d->udploop]);
- taia_add(&d->deadline,&d->deadline,&now);
- d->tcpstate = 0;
- return 0;
- }
- socketfree(d);
- }
- }
- ++d->udploop;
- d->curserver = 0;
- }
-
- dns_transmit_free(d); return DNS_COM;
-}
-
-int firstudp(struct dns_transmit *d)
-{
- d->curserver = 0;
- return thisudp(d);
-}
-
-int nextudp(struct dns_transmit *d)
-{
- ++d->curserver;
- return thisudp(d);
-}
-
-int thistcp(struct dns_transmit *d)
-{
- struct taia now;
- const char *ip;
-
- socketfree(d);
- packetfree(d);
-
- for (; d->curserver < QUERY_MAXNS; ++d->curserver) {
- ip = d->servers + 16 * d->curserver;
- if (byte_diff(ip,16,V6localnet)) {
- d->query[2] = dns_random(256);
- d->query[3] = dns_random(256);
-
- if (ip6_isv4mapped(ip)) {
- d->s1 = 1 + socket_tcp4();
- if (!d->s1) { dns_transmit_free(d); return DNS_COM; }
- if (randombind4(d) < 0) { dns_transmit_free(d); return DNS_COM; }
- } else {
- d->s1 = 1 + socket_tcp6();
- if (!d->s1) { dns_transmit_free(d); return DNS_COM; }
- if (randombind6(d) < 0) { dns_transmit_free(d); return DNS_COM; }
- }
-
- taia_now(&now);
- taia_uint(&d->deadline,10);
- taia_add(&d->deadline,&d->deadline,&now);
-
- if (byte_equal(ip,2,V6linklocal) && !d->scope_id)
- d->scope_id = getscopeid(d,ip);
- if (socket_connect(d->s1 - 1,ip,DNSPORT,d->scope_id) == 0) {
- d->tcpstate = 2;
- return 0;
- }
- if ((errno == EINPROGRESS) || (errno == EWOULDBLOCK)) {
- d->tcpstate = 1;
- return 0;
- }
-
- socketfree(d);
- }
- }
-
- dns_transmit_free(d);
- return DNS_COM;
-}
-
-int firsttcp(struct dns_transmit *d)
-{
- d->curserver = 0;
- return thistcp(d);
-}
-
-int nexttcp(struct dns_transmit *d)
-{
- ++d->curserver;
- return thistcp(d);
-}
-
-int dns_transmit_start(struct dns_transmit *d,const char servers[QUERY_MAXIPLEN], \
- int flagrecursive,const char *q,const char qtype[2],const char localip[16])
-{
- unsigned int len;
-
- dns_transmit_free(d);
- errno = EIO;
-
- len = dns_domain_length(q);
- d->querylen = len + 18;
- d->query = alloc(d->querylen);
- if (!d->query) return DNS_COM;
-
- uint16_pack_big(d->query,len + 16);
- byte_copy(d->query + 2,12,flagrecursive ? "\0\0\1\0\0\1\0\0\0\0\0\0" : \
- "\0\0\0\0\0\1\0\0\0\0\0\0gcc-bug-workaround");
- byte_copy(d->query + 14,len,q);
- byte_copy(d->query + 14 + len,2,qtype);
- byte_copy(d->query + 16 + len,2,DNS_C_IN);
-
- byte_copy(d->qtype,2,(char *) qtype);
- d->servers = servers;
- byte_copy(d->localip,16,(char *) localip);
-
- d->udploop = flagrecursive ? 1 : 0;
-
- if (len + 16 > MSGSIZE) return firsttcp(d);
- return firstudp(d);
-}
-
-int dns_transmit_start6(struct dns_transmit *d,const char servers[QUERY_MAXIPLEN], \
- int flagrecursive,const char *q,const char qtype[2], \
- const char localip[16],const uint32 scopes[QUERY_MAXNS])
-{
- byte_copy(scope_ids,128,(char *) scopes);
-
- return dns_transmit_start(d,servers,flagrecursive,q,qtype,localip);
-}
-
-void dns_transmit_io(struct dns_transmit *d,iopause_fd *x,struct taia *deadline)
-{
- x->fd = d->s1 - 1;
-
- switch (d->tcpstate) {
- case 0: case 3: case 4: case 5:
- x->events = IOPAUSE_READ;
- break;
- case 1: case 2:
- x->events = IOPAUSE_WRITE;
- break;
- }
-
- if (taia_less(&d->deadline,deadline))
- *deadline = d->deadline;
-}
-
-int dns_transmit_get(struct dns_transmit *d,const iopause_fd *x,const struct taia *when)
-{
- char udpbuf[MSGSIZE + 1];
- unsigned char ch;
- int r;
- int fd;
-
- errno = EIO;
- fd = d->s1 - 1;
-
- if (!x->revents) {
- if (taia_less((struct taia *)when,&d->deadline)) return 0;
- errno = ETIMEDOUT;
- if (d->tcpstate == 0) return nextudp(d);
- return nexttcp(d);
- }
-
-/*
-have attempted to send UDP query to each server udploop times
-have sent query to curserver on UDP socket s
-*/
- if (d->tcpstate == 0) {
- r = recv(fd,udpbuf,sizeof(udpbuf),0);
- if (r <= 0) {
- if (errno == ECONNREFUSED) if (d->udploop == 2) return 0;
- return nextudp(d);
- }
- if (r + 1 > sizeof(udpbuf)) return 0;
-
- if (irrelevant(d,udpbuf,r)) return 0;
- if (serverwantstcp(udpbuf,r)) return firsttcp(d);
- if (serverfailed(udpbuf,r)) {
- if (d->udploop == 2) return 0;
- return nextudp(d);
- }
- socketfree(d);
-
- d->packetlen = r;
- d->packet = alloc(d->packetlen);
- if (!d->packet) { dns_transmit_free(d); return DNS_COM; }
- byte_copy(d->packet,d->packetlen,udpbuf);
- queryfree(d);
- return 1;
- }
-
-/*
-have sent connection attempt to curserver on TCP socket s
-pos not defined
-*/
- if (d->tcpstate == 1) {
- if (!socket_connected(fd)) return nexttcp(d);
- d->pos = 0;
- d->tcpstate = 2;
- return 0;
- }
-
-/*
-have connection to curserver on TCP socket s
-have sent pos bytes of query
-*/
- if (d->tcpstate == 2) {
- r = write(fd,d->query + d->pos,d->querylen - d->pos);
- if (r <= 0) return nexttcp(d);
- d->pos += r;
- if (d->pos == d->querylen) {
- struct taia now;
- taia_now(&now);
- taia_uint(&d->deadline,10);
- taia_add(&d->deadline,&d->deadline,&now);
- d->tcpstate = 3;
- }
- return 0;
- }
-
-/*
-have sent entire query to curserver on TCP socket s
-pos not defined
-*/
- if (d->tcpstate == 3) {
- r = read(fd,&ch,1);
- if (r <= 0) return nexttcp(d);
- d->packetlen = ch;
- d->tcpstate = 4;
- return 0;
- }
-
-/*
-have sent entire query to curserver on TCP socket s
-pos not defined
-have received one byte of packet length into packetlen
-*/
- if (d->tcpstate == 4) {
- r = read(fd,&ch,1);
- if (r <= 0) return nexttcp(d);
- d->packetlen <<= 8;
- d->packetlen += ch;
- d->tcpstate = 5;
- d->pos = 0;
- d->packet = alloc(d->packetlen);
- if (!d->packet) { dns_transmit_free(d); return DNS_COM; }
- return 0;
- }
-
-/*
-have sent entire query to curserver on TCP socket s
-have received entire packet length into packetlen
-packet is allocated
-have received pos bytes of packet
-*/
- if (d->tcpstate == 5) {
- r = read(fd,d->packet + d->pos,d->packetlen - d->pos);
- if (r <= 0) return nexttcp(d);
- d->pos += r;
- if (d->pos < d->packetlen) return 0;
-
- socketfree(d);
- if (irrelevant(d,d->packet,d->packetlen)) return nexttcp(d);
- if (serverwantstcp(d->packet,d->packetlen)) return nexttcp(d);
- if (serverfailed(d->packet,d->packetlen)) return nexttcp(d);
-
- queryfree(d);
- return 1;
- }
-
- return 0;
-}
diff --git a/dnsstub/dns_txt.c b/dnsstub/dns_txt.c
deleted file mode 100644
index 9a1b56a..0000000
--- a/dnsstub/dns_txt.c
+++ /dev/null
@@ -1,64 +0,0 @@
-#include "stralloc.h"
-#include "uint_t.h"
-#include "byte.h"
-#include "dnsresolv.h"
-
-int dns_txt_packet(stralloc *out,const char *buf,unsigned int len)
-{
- unsigned int pos;
- char header[12];
- uint16 numanswers;
- uint16 datalen;
- char ch;
- unsigned int txtlen;
- int i;
- int ranswers = 0;
-
- if (!stralloc_copys(out,"")) return DNS_MEM;
-
- pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 6,&numanswers);
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos += 4;
-
- while (numanswers--) {
- pos = dns_packet_skipname(buf,len,pos); if (!pos) return DNS_ERR;
- pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return DNS_ERR;
- uint16_unpack_big(header + 8,&datalen);
- if (byte_equal(header,2,DNS_T_TXT))
- if (byte_equal(header + 2,2,DNS_C_IN)) {
- if (pos + datalen > len) return DNS_ERR;
- txtlen = (unsigned char) buf[pos];
- for (i = 1; i < datalen; ++i) {
- ch = buf[pos + i];
- if (i == txtlen + 1) // next label
- txtlen += (unsigned char) ch + 1;
- else {
- if (ch < 32) ch = '?';
- if (ch > 126) ch = '?';
- if (!stralloc_append(out,&ch)) return DNS_MEM;
- }
- }
- }
- pos += datalen;
- ++ranswers;
- if (numanswers) if (!stralloc_append(out,"\n")) return DNS_MEM;
- }
-
- return ranswers;
-}
-
-static char *q = 0;
-
-int dns_txt(stralloc *out,const stralloc *fqdn)
-{
- int rc;
-
- if (dns_domain_fromdot(&q,fqdn->s,fqdn->len) <= 0) return DNS_ERR;
- if (dns_resolve(q,DNS_T_TXT) < 0) return DNS_ERR;
- if ((rc = dns_txt_packet(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen)) < 0) return DNS_ERR;
- dns_transmit_free(&dns_resolve_tx);
- dns_domain_free(&q);
-
- return rc;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 11:43:07 +0000