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Code Issues Releases Wiki Activity

Add +twiddle option for testing.

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Fix up host resolution from resolv.conf.
This commit is contained in:
Michael Sawyer
2000-04-29 01:39:32 +00:00
parent 20c266cbc9
commit e01cfa577b
2 changed files with 73 additions and 6 deletions
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9
bin/dig/dig.c
View File

@@ -15,6 +15,8 @@
* SOFTWARE.
*/
#define TWIDDLE
#include <config.h>
#include <errno.h>
@@ -71,6 +73,9 @@ extern dns_name_t rootorg;
extern char *rootspace[BUFSIZE];
extern isc_buffer_t rootbuf;
extern int sendcount;
#ifdef TWIDDLE
extern isc_boolean_t twiddle;
#endif
isc_boolean_t short_form=ISC_FALSE;
@@ -394,6 +399,10 @@ parse_args(isc_boolean_t is_batchfile, int argc, char **argv) {
recurse = ISC_TRUE;
} else if (strncmp(argv[0],"+norec",6) == 0) {
recurse = ISC_FALSE;
#ifdef TWIDDLE
} else if (strncmp(argv[0],"+twiddle",6) == 0) {
twiddle = ISC_TRUE;
#endif
} else if (strncmp(argv[0],"-f",2) == 0) {
if (argv[0][2]!=0) {
batchname=&argv[0][2];

70
bin/dig/dighost.c
View File

@@ -15,7 +15,7 @@
* SOFTWARE.
*/
#define DEBUG
#define TWIDDLE (random()%4+1)
#include <config.h>
@@ -62,6 +62,9 @@ ISC_LIST(dig_server_t) server_list;
isc_boolean_t tcp_mode = ISC_FALSE, recurse = ISC_TRUE, have_ipv6 = ISC_FALSE,
free_now = ISC_FALSE;
#ifdef TWIDDLE
isc_boolean_t twiddle = ISC_FALSE;
#endif
in_port_t port;
unsigned int timeout;
isc_mem_t *mctx = NULL;
@@ -181,6 +184,32 @@ istype(char *text) {
}
#ifdef TWIDDLE
void
twiddlebuf(isc_buffer_t buf) {
isc_region_t r;
int len, pos, bit;
unsigned char bitfield;
int i, tw;
hex_dump(&buf);
tw=TWIDDLE;
printf ("Twiddling %d bits: ",tw);
for (i=0;i<tw;i++) {
isc_buffer_usedregion (&buf, &r);
len = r.length;
pos=(int)random();
pos = pos%len;
bit = (int)random()%8;
bitfield = 1 << bit;
printf ("%d@%03x ",bit, pos);
r.base[pos] ^= bitfield;
}
puts ("");
hex_dump(&buf);
}
#endif
static void
setup_system(void) {
char rcinput[MXNAME];
@@ -535,7 +564,7 @@ send_done(isc_task_t *task, isc_event_t *event) {
static void
cancel_lookup(dig_lookup_t *lookup) {
dig_query_t *query;
dig_query_t *query=NULL;
debug("cancel_lookup()");
if (!lookup->pending)
@@ -678,9 +707,15 @@ launch_next_query(dig_query_t *query, isc_boolean_t include_question) {
isc_buffer_clear(&query->lengthbuf);
isc_buffer_putuint16(&query->slbuf, query->lookup->sendbuf.used);
ISC_LIST_ENQUEUE(query->sendlist, &query->slbuf, link);
if (include_question)
if (include_question) {
#ifdef TWIDDLE
if (twiddle) {
twiddlebuf(query->lookup->sendbuf);
}
#endif
ISC_LIST_ENQUEUE(query->sendlist, &query->lookup->sendbuf,
link);
}
ISC_LIST_ENQUEUE(query->lengthlist, &query->lengthbuf, link);
result = isc_socket_recvv(query->sock, &query->lengthlist, 0, task,
@@ -894,15 +929,17 @@ get_address(char *hostname, in_port_t port, isc_sockaddr_t *sockaddr) {
struct in_addr in4;
struct in6_addr in6;
struct hostent *he;
char host[MXNAME];
debug("get_address()");
if (have_ipv6 && inet_pton(AF_INET6, hostname, &in6) == 1)
sscanf (hostname, "%s", host); /* Force CR, etc... out */
if (have_ipv6 && inet_pton(AF_INET6, host, &in6) == 1)
isc_sockaddr_fromin6(sockaddr, &in6, port);
else if (inet_pton(AF_INET, hostname, &in4) == 1)
else if (inet_pton(AF_INET, host, &in4) == 1)
isc_sockaddr_fromin(sockaddr, &in4, port);
else {
he = gethostbyname(hostname);
he = gethostbyname(host);
if (he == NULL)
fatal("Couldn't look up your server host %s. errno=%d",
hostname, h_errno);
@@ -977,6 +1014,11 @@ do_lookup_udp(dig_lookup_t *lookup) {
check_result(result, "isc_socket_recvv");
sendcount++;
debug("Sent count number %d", sendcount);
#ifdef TWIDDLE
if (twiddle) {
twiddlebuf(lookup->sendbuf);
}
#endif
ISC_LIST_ENQUEUE(query->sendlist, &lookup->sendbuf, link);
debug("Sending a request.");
result = isc_socket_sendtov(query->sock, &query->sendlist,
@@ -1055,10 +1097,26 @@ free_lists(void) {
int
main(int argc, char **argv) {
dig_lookup_t *lookup = NULL;
#ifdef TWIDDLE
FILE *fp;
int i,p;
#endif
ISC_LIST_INIT(lookup_list);
ISC_LIST_INIT(server_list);
#ifdef TWIDDLE
fp = fopen("/dev/urandom","r");
if (fp!=NULL) {
fread (&i, sizeof(int), 1, fp);
srandom(i);
}
else {
srandom ((int)&main);
}
p = getpid()%16+8;
for (i=0 ; i<p; i++);
#endif
setup_libs();
port = 53;
timeout = 10;