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Fixed resolver to not do any DNS resolution if dns_resolution == 0

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This commit is contained in:
pdw
2003-08-30 09:40:03 +00:00
parent ebb28db1b6
commit 37f7fadd8a
3 changed files with 31 additions and 24 deletions
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3
ChangeLog
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@@ -5,7 +5,8 @@ Attributions apply to all preceding items up to the next blank line.
Unattributed items are by Paul Warren and Chris Lightfoot.
0.14
* Fixed DNS resolution so that no lookups are done if options.dns_resolution ==
0
* Configure/compilation fixes for Mac OS X
* MacOS interfaces to avoid by default

2
configure.in
View File

@@ -21,7 +21,7 @@ AC_CONFIG_AUX_DIR(config)
AC_CANONICAL_SYSTEM
AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(iftop, "0.13")
AM_INIT_AUTOMAKE(iftop, "0.14pre2")
AC_DEFINE_UNQUOTED(IFTOP_VERSION, "$VERSION", [The iftop version number])

50
resolver.c
View File

@@ -19,6 +19,7 @@
#include "threadprof.h"
#include "options.h"
#define RESOLVE_QUEUE_LENGTH 20
@@ -33,6 +34,8 @@ hash_type* ns_hash;
int head;
int tail;
extern options_t options;
/*
* We have a choice of resolver methods. Real computers have getnameinfo or
@@ -335,32 +338,35 @@ void resolve(struct in_addr* addr, char* result, int buflen) {
char* hostname;
int added = 0;
pthread_mutex_lock(&resolver_queue_mutex);
if(options.dnsresolution == 1) {
if(hash_find(ns_hash, addr, (void**)&hostname) == HASH_STATUS_OK) {
/* Found => already resolved, or on the queue */
}
else {
hostname = strdup(inet_ntoa(*addr));
hash_insert(ns_hash, addr, hostname);
pthread_mutex_lock(&resolver_queue_mutex);
if(((head + 1) % RESOLVE_QUEUE_LENGTH) == tail) {
/* queue full */
if(hash_find(ns_hash, addr, (void**)&hostname) == HASH_STATUS_OK) {
/* Found => already resolved, or on the queue */
}
else {
resolve_queue[head] = *addr;
head = (head + 1) % RESOLVE_QUEUE_LENGTH;
added = 1;
hostname = strdup(inet_ntoa(*addr));
hash_insert(ns_hash, addr, hostname);
if(((head + 1) % RESOLVE_QUEUE_LENGTH) == tail) {
/* queue full */
}
else {
resolve_queue[head] = *addr;
head = (head + 1) % RESOLVE_QUEUE_LENGTH;
added = 1;
}
}
pthread_mutex_unlock(&resolver_queue_mutex);
if(added == 1) {
pthread_cond_signal(&resolver_queue_cond);
}
if(result != NULL && buflen > 1) {
strncpy(result, hostname, buflen - 1);
result[buflen - 1] = '\0';
}
}
pthread_mutex_unlock(&resolver_queue_mutex);
if(added == 1) {
pthread_cond_signal(&resolver_queue_cond);
}
if(result != NULL && buflen > 1) {
strncpy(result, hostname, buflen - 1);
result[buflen - 1] = '\0';
}
}