| 1 |
--- /dev/null |
| 2 |
+++ b/dnsnamex.c |
| 3 |
@@ -0,0 +1,34 @@ |
| 4 |
+#include "buffer.h" |
| 5 |
+#include "exit.h" |
| 6 |
+#include "strerr.h" |
| 7 |
+#include "ip4.h" |
| 8 |
+#include "dns.h" |
| 9 |
+ |
| 10 |
+#define FATAL "dnsnamex: fatal: " |
| 11 |
+ |
| 12 |
+static char seed[128]; |
| 13 |
+ |
| 14 |
+char ip[4]; |
| 15 |
+static stralloc out; |
| 16 |
+ |
| 17 |
+int main(int argc,char **argv) |
| 18 |
+{ |
| 19 |
+ dns_random_init(seed); |
| 20 |
+ |
| 21 |
+ if (*argv) ++argv; |
| 22 |
+ |
| 23 |
+ while (*argv) { |
| 24 |
+ if (!ip4_scan(*argv,ip)) |
| 25 |
+ strerr_die3x(111,FATAL,"unable to parse IP address ",*argv); |
| 26 |
+ if (dns_name4_multi(&out,ip) == -1) |
| 27 |
+ strerr_die4sys(111,FATAL,"unable to find host name for ",*argv,": "); |
| 28 |
+ |
| 29 |
+ buffer_put(buffer_1,out.s,out.len); |
| 30 |
+ buffer_puts(buffer_1,"\n"); |
| 31 |
+ |
| 32 |
+ ++argv; |
| 33 |
+ } |
| 34 |
+ |
| 35 |
+ buffer_flush(buffer_1); |
| 36 |
+ _exit(0); |
| 37 |
+} |
| 38 |
--- /dev/null |
| 39 |
+++ b/dns_namex.c |
| 40 |
@@ -0,0 +1,48 @@ |
| 41 |
+#include "stralloc.h" |
| 42 |
+#include "uint16.h" |
| 43 |
+#include "byte.h" |
| 44 |
+#include "dns.h" |
| 45 |
+ |
| 46 |
+static char *q = 0; |
| 47 |
+ |
| 48 |
+int dns_name_packet_multi(stralloc *out,const char *buf,unsigned int len) |
| 49 |
+{ |
| 50 |
+ unsigned int pos; |
| 51 |
+ char header[12]; |
| 52 |
+ uint16 numanswers; |
| 53 |
+ uint16 datalen; |
| 54 |
+ |
| 55 |
+ if (!stralloc_copys(out,"")) return -1; |
| 56 |
+ |
| 57 |
+ pos = dns_packet_copy(buf,len,0,header,12); if (!pos) return -1; |
| 58 |
+ uint16_unpack_big(header + 6,&numanswers); |
| 59 |
+ pos = dns_packet_skipname(buf,len,pos); if (!pos) return -1; |
| 60 |
+ pos += 4; |
| 61 |
+ |
| 62 |
+ while (numanswers--) { |
| 63 |
+ pos = dns_packet_skipname(buf,len,pos); if (!pos) return -1; |
| 64 |
+ pos = dns_packet_copy(buf,len,pos,header,10); if (!pos) return -1; |
| 65 |
+ uint16_unpack_big(header + 8,&datalen); |
| 66 |
+ if (byte_equal(header,2,DNS_T_PTR)) |
| 67 |
+ if (byte_equal(header + 2,2,DNS_C_IN)) { |
| 68 |
+ if (!dns_packet_getname(buf,len,pos,&q)) return -1; |
| 69 |
+ if (!dns_domain_todot_cat(out,q)) return -1; |
| 70 |
+ if (!stralloc_cats(out, " ")) return -1 ; |
| 71 |
+ } |
| 72 |
+ pos += datalen; |
| 73 |
+ } |
| 74 |
+ |
| 75 |
+ return 0; |
| 76 |
+} |
| 77 |
+ |
| 78 |
+int dns_name4_multi(stralloc *out,const char ip[4]) |
| 79 |
+{ |
| 80 |
+ char name[DNS_NAME4_DOMAIN]; |
| 81 |
+ |
| 82 |
+ dns_name4_domain(name,ip); |
| 83 |
+ if (dns_resolve(name,DNS_T_PTR) == -1) return -1; |
| 84 |
+ if (dns_name_packet_multi(out,dns_resolve_tx.packet,dns_resolve_tx.packetlen) == -1) return -1; |
| 85 |
+ dns_transmit_free(&dns_resolve_tx); |
| 86 |
+ dns_domain_free(&q); |
| 87 |
+ return 0; |
| 88 |
+} |
| 89 |
--- a/dns.h |
| 90 |
+++ b/dns.h |
| 91 |
@@ -70,9 +70,11 @@ extern struct dns_transmit dns_resolve_t |
| 92 |
extern int dns_ip4_packet(stralloc *,const char *,unsigned int); |
| 93 |
extern int dns_ip4(stralloc *,const stralloc *); |
| 94 |
extern int dns_name_packet(stralloc *,const char *,unsigned int); |
| 95 |
+extern int dns_name_packet_multi(stralloc *,const char *,unsigned int); |
| 96 |
extern void dns_name4_domain(char *,const char *); |
| 97 |
#define DNS_NAME4_DOMAIN 31 |
| 98 |
extern int dns_name4(stralloc *,const char *); |
| 99 |
+extern int dns_name4_multi(stralloc *,const char *); |
| 100 |
extern int dns_txt_packet(stralloc *,const char *,unsigned int); |
| 101 |
extern int dns_txt(stralloc *,const stralloc *); |
| 102 |
extern int dns_mx_packet(stralloc *,const char *,unsigned int); |
| 103 |
--- a/Makefile |
| 104 |
+++ b/Makefile |
| 105 |
@@ -219,10 +219,10 @@ uint64.h taia.h dd.h |
| 106 |
|
| 107 |
dns.a: \ |
| 108 |
makelib dns_dfd.o dns_domain.o dns_dtda.o dns_ip.o dns_ipq.o dns_mx.o \ |
| 109 |
-dns_name.o dns_nd.o dns_packet.o dns_random.o dns_rcip.o dns_rcrw.o \ |
| 110 |
+dns_name.o dns_namex.o dns_nd.o dns_packet.o dns_random.o dns_rcip.o dns_rcrw.o \ |
| 111 |
dns_resolve.o dns_sortip.o dns_transmit.o dns_txt.o |
| 112 |
./makelib dns.a dns_dfd.o dns_domain.o dns_dtda.o dns_ip.o \ |
| 113 |
- dns_ipq.o dns_mx.o dns_name.o dns_nd.o dns_packet.o \ |
| 114 |
+ dns_ipq.o dns_mx.o dns_name.o dns_namex.o dns_nd.o dns_packet.o \ |
| 115 |
dns_random.o dns_rcip.o dns_rcrw.o dns_resolve.o \ |
| 116 |
dns_sortip.o dns_transmit.o dns_txt.o |
| 117 |
|
| 118 |
@@ -261,6 +261,11 @@ compile dns_name.c stralloc.h gen_alloc. |
| 119 |
stralloc.h iopause.h taia.h tai.h uint64.h taia.h |
| 120 |
./compile dns_name.c |
| 121 |
|
| 122 |
+dns_namex.o: \ |
| 123 |
+compile dns_namex.c stralloc.h gen_alloc.h uint16.h byte.h dns.h \ |
| 124 |
+stralloc.h iopause.h taia.h tai.h uint64.h taia.h |
| 125 |
+ ./compile dns_namex.c |
| 126 |
+ |
| 127 |
dns_nd.o: \ |
| 128 |
compile dns_nd.c byte.h fmt.h dns.h stralloc.h gen_alloc.h iopause.h \ |
| 129 |
taia.h tai.h uint64.h taia.h |
| 130 |
@@ -394,6 +399,17 @@ compile dnsname.c buffer.h exit.h strerr |
| 131 |
gen_alloc.h iopause.h taia.h tai.h uint64.h taia.h |
| 132 |
./compile dnsname.c |
| 133 |
|
| 134 |
+dnsnamex: \ |
| 135 |
+load dnsnamex.o iopause.o dns.a env.a libtai.a alloc.a buffer.a unix.a \ |
| 136 |
+byte.a socket.lib |
| 137 |
+ ./load dnsnamex iopause.o dns.a env.a libtai.a alloc.a \ |
| 138 |
+ buffer.a unix.a byte.a `cat socket.lib` |
| 139 |
+ |
| 140 |
+dnsnamex.o: \ |
| 141 |
+compile dnsnamex.c buffer.h exit.h strerr.h ip4.h dns.h stralloc.h \ |
| 142 |
+gen_alloc.h iopause.h taia.h tai.h uint64.h taia.h |
| 143 |
+ ./compile dnsnamex.c |
| 144 |
+ |
| 145 |
dnsq: \ |
| 146 |
load dnsq.o iopause.o printrecord.o printpacket.o parsetype.o dns.a \ |
| 147 |
env.a libtai.a buffer.a alloc.a unix.a byte.a socket.lib |
| 148 |
@@ -658,7 +674,7 @@ prog: \ |
| 149 |
dnscache-conf dnscache walldns-conf walldns rbldns-conf rbldns \ |
| 150 |
rbldns-data pickdns-conf pickdns pickdns-data tinydns-conf tinydns \ |
| 151 |
tinydns-data tinydns-get tinydns-edit axfr-get axfrdns-conf axfrdns \ |
| 152 |
-dnsip dnsipq dnsname dnstxt dnsmx dnsfilter random-ip dnsqr dnsq \ |
| 153 |
+dnsip dnsipq dnsname dnsnamex dnstxt dnsmx dnsfilter random-ip dnsqr dnsq \ |
| 154 |
dnstrace dnstracesort cachetest utime rts |
| 155 |
|
| 156 |
prot.o: \ |
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