diff options
Diffstat (limited to 'packages/net-tools/files/net-tools-1.60-duplicate-tcp.patch')
| -rw-r--r-- | packages/net-tools/files/net-tools-1.60-duplicate-tcp.patch | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/packages/net-tools/files/net-tools-1.60-duplicate-tcp.patch b/packages/net-tools/files/net-tools-1.60-duplicate-tcp.patch new file mode 100644 index 0000000000..316ac65a5b --- /dev/null +++ b/packages/net-tools/files/net-tools-1.60-duplicate-tcp.patch @@ -0,0 +1,194 @@ +--- net-tools-1.60/netstat.c.foo Mon Apr 22 14:25:20 2002 ++++ net-tools-1.60/netstat.c Mon Apr 22 14:25:22 2002 +@@ -435,6 +435,162 @@ + " will not be shown, you would have to be root to see it all.)\n")); + } + ++#define TCP_HASH_SIZE 1009 ++ ++static struct tcp_node { ++ struct tcp_node *next; ++ char *socket_pair; ++} *tcp_node_hash[TCP_HASH_SIZE]; ++ ++static unsigned int tcp_node_compute_string_hash(const char *p) ++{ ++ unsigned int h = *p; ++ ++ if (h) ++ for (p += 1; *p != '\0'; p++) ++ h = (h << 5) - h + *p; ++ ++ return h; ++} ++ ++#define TCP_NODE_HASH_STRING(x) \ ++ (tcp_node_compute_string_hash(x) % TCP_HASH_SIZE) ++ ++static void tcp_node_hash_clear(void) ++{ ++ int i; ++ struct tcp_node *next_node; ++ struct tcp_node *tmp_node; ++ for (i=0; i < TCP_HASH_SIZE; i++) { ++ if (tcp_node_hash[i]) { ++ /* free the children of this hash bucket */ ++ next_node = tcp_node_hash[i]->next; ++ while (next_node) { ++ tmp_node = next_node; ++ next_node = next_node->next; ++ free(tmp_node->socket_pair); ++ free(tmp_node); ++ } ++ ++ /* free the bucket itself */ ++ free(tcp_node_hash[i]); ++ tcp_node_hash[i] = NULL; ++ } ++ } ++} ++ ++/* This function takes a socket pair string. If it already exists in ++ the hash it returns -1, otherwise it returns 0. */ ++ ++static int tcp_node_hash_check_and_append(const char *local_addr, ++ int local_port, ++ const char *rem_addr, ++ int rem_port) ++{ ++ unsigned int hash_val; ++ struct tcp_node *tmp_node; ++ int tmp_string_len; ++ char *tmp_string;; ++ ++ /* Size of the string is the size of the two lengths of the address ++ strings plus enough sizes for the colons and the ports. */ ++ tmp_string_len = strlen(local_addr) + strlen(rem_addr) + 32; ++ tmp_string = malloc(tmp_string_len); ++ if (!tmp_string) ++ return 0; ++ ++ if (snprintf(tmp_string, tmp_string_len - 1, "%s:%d:%s:%d", ++ local_addr, local_port, rem_addr, rem_port) < 0) { ++ free(tmp_string); ++ return 0; ++ } ++ ++ hash_val = TCP_NODE_HASH_STRING(tmp_string); ++ ++ /* See if we have to allocate this node */ ++ if (!tcp_node_hash[hash_val]) { ++ tcp_node_hash[hash_val] = malloc(sizeof(struct tcp_node)); ++ if (!tcp_node_hash[hash_val]) { ++ free(tmp_string); ++ return 0; ++ } ++ ++ memset(tcp_node_hash[hash_val], 0, sizeof(struct tcp_node)); ++ ++ /* Stuff this new value into the hash bucket and return early */ ++ tcp_node_hash[hash_val]->socket_pair = tmp_string; ++ return 0; ++ } ++ ++ /* Try to find the value in the hash bucket. */ ++ tmp_node = tcp_node_hash[hash_val]; ++ while (tmp_node) { ++ if (!strcmp(tmp_node->socket_pair, tmp_string)) { ++ free(tmp_string); ++ return -1; ++ } ++ tmp_node = tmp_node->next; ++ } ++ ++ /* If we got this far it means that it isn't in the hash bucket. ++ Add it to the front since it's faster that way. */ ++ tmp_node = tcp_node_hash[hash_val]; ++ ++ tcp_node_hash[hash_val] = malloc(sizeof(struct tcp_node)); ++ if (!tcp_node_hash[hash_val]) { ++ free(tmp_string); ++ tcp_node_hash[hash_val] = tmp_node; ++ return 0; ++ } ++ ++ tcp_node_hash[hash_val]->socket_pair = tmp_string; ++ tcp_node_hash[hash_val]->next = tmp_node; ++ ++ return 0; ++} ++ ++#if 0 ++static void tcp_node_hash_report_bucket_size(void) ++{ ++ int max = 0; ++ int min = 0; ++ int num = 0; ++ int total = 0; ++ struct tcp_node *tmp_node; ++ int tmp, i; ++ float avg; ++ ++ for (i=0; i < TCP_HASH_SIZE; i++) { ++ tmp_node = tcp_node_hash[i]; ++ if (!tmp_node) ++ continue; ++ ++ tmp = 0; ++ ++ num++; ++ tmp = 1; ++ ++ while (tmp_node) { ++ tmp++; ++ tmp_node = tmp_node->next; ++ } ++ ++ total += tmp; ++ if (tmp > max) ++ max = tmp; ++ ++ if (min == 0 || tmp < min) ++ min = tmp; ++ } ++ ++ avg = (float)total/(float)num; ++ ++ printf("%d nodes in %d buckets min/max/avg %d/%d/%.2f\n", ++ total, num, min, max, avg); ++ ++} ++#endif ++ + #if HAVE_AFNETROM + static const char *netrom_state[] = + { +@@ -752,11 +908,20 @@ + fprintf(stderr, _("warning, got bogus tcp line.\n")); + return; + } ++ + if ((ap = get_afntype(((struct sockaddr *) &localaddr)->sa_family)) == NULL) { + fprintf(stderr, _("netstat: unsupported address family %d !\n"), + ((struct sockaddr *) &localaddr)->sa_family); + return; + } ++ ++ /* make sure that we haven't seen this socket pair before */ ++ if (tcp_node_hash_check_and_append(local_addr, local_port, ++ rem_addr, rem_port) < 0) { ++ /* fprintf(stderr, _("warning, got duplicate tcp line.\n")); */ ++ return; ++ } ++ + if (state == TCP_LISTEN) { + time_len = 0; + retr = 0L; +@@ -1849,6 +2014,7 @@ + break; + sleep(1); + prg_cache_clear(); ++ tcp_node_hash_clear(); + } + return (i); + } |