1 files changed, 75 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libcruft/res_mkquery.c b/mdk-stage1/dietlibc/libcruft/res_mkquery.c
new file mode 100644
index 000000000..cf5693668
--- /dev/null
+++ b/mdk-stage1/dietlibc/libcruft/res_mkquery.c
@@ -0,0 +1,75 @@
+#include <resolv.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <errno.h>
+#include <arpa/nameser.h>
+#include "dietfeatures.h"
+
+static char dnspacket[]="\xfe\xfe\001\000\000\001\000\000\000\000\000\000";
+
+/*
+                                    1  1  1  1  1  1
+      0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |                      ID                       |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |QR|   Opcode  |AA|TC|RD|RA|   Z    |   RCODE   |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |                    QDCOUNT                    |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |                    ANCOUNT                    |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |                    NSCOUNT                    |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    |                    ARCOUNT                    |
+    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+*/
+
+extern void __dns_make_fd(void);
+extern int __dns_fd;
+
+extern int __dns_servers;
+extern struct sockaddr __dns_server_ips[];
+
+extern void __dns_readstartfiles(void);
+
+int res_mkquery(int op, const char *dname, int class, int type, char* data,
+		int datalen, const unsigned char* newrr, char* buf, int buflen) {
+  unsigned char packet[512];
+  memmove(packet,dnspacket,12);
+  if ((_res.options&RES_RECURSE)==0) packet[2]=0;
+  *(unsigned short*)packet=rand();
+  {
+    unsigned char* x;
+    const char* y,* tmp;
+    x=packet+12; y=dname;
+    while (*y) {
+      while (*y=='.') ++y;
+      for (tmp=y; *tmp && *tmp!='.'; ++tmp) ;
+      *x=tmp-y;
+      if (!(tmp-y)) break;
+      ++x;
+      if (x>=packet+510-(tmp-y)) { return -1; }
+      memmove(x,y,tmp-y);
+      x+=tmp-y;
+      if (!*tmp) {
+	*x=0;
+	break;
+      }
+      y=tmp;
+    }
+    *++x= 0; *++x= type;	/* A */
+    *++x= 0; *++x= class;	/* IN */
+    ++x;
+    if (x-packet>buflen) return -1;
+    memmove(buf,packet,x-packet);
+    return x-packet;
+  }
+}
+