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src/3rdparty: Rebase patricia.{h,c} on upstream version

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This updates to a clang-formatted version that was merged recently.
This commit is contained in:
Tim Wojtulewicz 2022-07-28 12:27:16 -07:00
parent c4d015369b
commit 01c31e9917
2 changed files with 986 additions and 1046 deletions
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328
src/3rdparty/patricia.c vendored
View file

@ -1,22 +1,5 @@
/*
* This code originates from Dave Plonka's Net::Security perl module. An adaptation
* of it in C is kept at https://github.com/CAIDA/cc-common/tree/master/libpatricia.
* That repository is considered the upstream version for Zeek's fork. We make some
* custom changes to this upstream:
* - Replaces void_fn_t with data_fn_t and prefix_data_fn_t
* - Adds patricia_search_all method
* - One commented-out portion of an if statement that breaks one of our tests
*
* The current version is based on commit 4a2c61374f507a420d28bd9084c976142d279605
* from that repo.
*/
/*
* Johanna Amann <johanna@icir.org>
*
* Added patricia_search_all function.
*/
/*
* $Id: patricia.c,v 1.7 2005/12/07 20:46:41 dplonka Exp $
* Dave Plonka <plonka@doit.wisc.edu>
*
* This product includes software developed by the University of Michigan,
@ -29,40 +12,24 @@
* "demo.c" so that it could be used as a standalone API.
*/
/* From copyright.txt:
/*
* This code originates from Dave Plonka's Net::Security perl module. An
* adaptation of it in C is kept at
* https://github.com/CAIDA/cc-common/tree/master/libpatricia. That repository
* is considered the upstream version for Zeek's fork. We make some custom
* changes to this upstream:
* - Replaces void_fn_t with data_fn_t and prefix_data_fn_t
* - Adds patricia_search_all method
* - One commented-out portion of an if statement that breaks one of our tests
*
* Copyright (c) 1997, 1998, 1999
* The current version is based on commit
* fd262ab5ac5bae8b0d4a8b5e2e723115b1846376 from that repo.
*/
/*
* Johanna Amann <johanna@icir.org>
*
*
* The Regents of the University of Michigan ("The Regents") and Merit Network,
* Inc. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
* 3. All advertising materials mentioning features or use of
* this software must display the following acknowledgement:
* This product includes software developed by the University of Michigan, Merit
* Network, Inc., and their contributors.
* 4. Neither the name of the University, Merit Network, nor the
* names of their contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* Added patricia_search_all function.
*/
#ifndef UNUSED
@ -73,23 +40,22 @@
#endif
#endif
UNUSED static char copyright[] =
"This product includes software developed by the University of Michigan, Merit"
UNUSED static char copyright[] = "This product includes software developed by "
"the University of Michigan, Merit"
"Network, Inc., and their contributors.";
#include <arpa/inet.h> /* BSD, Linux, Solaris: for inet_addr */
#include <assert.h> /* assert */
#include <ctype.h> /* isdigit */
#include <errno.h> /* errno */
#include <math.h> /* sin */
#include <netinet/in.h> /* BSD, Linux: for inet_addr */
#include <stddef.h> /* NULL */
#include <stdio.h> /* sprintf, fprintf, stderr */
#include <stdlib.h> /* free, atol, calloc */
#include <string.h> /* memcpy, strchr, strlen */
#include <sys/types.h> /* BSD: for inet_addr */
#include <sys/socket.h> /* BSD, Linux: for inet_addr */
#include <netinet/in.h> /* BSD, Linux: for inet_addr */
#include <arpa/inet.h> /* BSD, Linux, Solaris: for inet_addr */
#include <stdbool.h>
#include <sys/types.h> /* BSD: for inet_addr */
#include "patricia.h"
@ -103,8 +69,7 @@ extern void out_of_memory(const char* where);
/* prefix_tochar
* convert prefix information to bytes
*/
u_char *
prefix_tochar (prefix_t * prefix)
u_char *prefix_tochar(prefix_t *prefix)
{
if (prefix == NULL)
return (NULL);
@ -112,8 +77,7 @@ prefix_tochar (prefix_t * prefix)
return ((u_char *)&prefix->add.sin);
}
int
comp_with_mask (void *addr, void *dest, u_int mask)
int comp_with_mask(void *addr, void *dest, u_int mask)
{
if (/* mask/8 == 0 || */ memcmp(addr, dest, mask / 8) == 0) {
@ -127,8 +91,7 @@ comp_with_mask (void *addr, void *dest, u_int mask)
}
/* this allows imcomplete prefix */
int
my_inet_pton (int af, const char *src, void *dst)
int my_inet_pton(int af, const char *src, void *dst)
{
if (af == AF_INET) {
int i, c, val;
@ -155,8 +118,10 @@ my_inet_pton (int af, const char *src, void *dst)
}
memcpy(dst, xp, sizeof(struct in_addr));
return (1);
#ifdef HAVE_IPV6
} else if (af == AF_INET6) {
return (inet_pton(af, src, dst));
#endif /* HAVE_IPV6 */
} else {
#ifndef NT
errno = EAFNOSUPPORT;
@ -171,8 +136,7 @@ my_inet_pton (int af, const char *src, void *dst)
* convert prefix information to ascii string with length
* thread safe and (almost) re-entrant implementation
*/
char *
prefix_toa2x (prefix_t *prefix, char *buff, int with_len)
char *prefix_toa2x(prefix_t *prefix, char *buff, int with_len)
{
if (prefix == NULL)
return ("(Null)");
@ -204,23 +168,24 @@ prefix_toa2x (prefix_t *prefix, char *buff, int with_len)
assert(prefix->bitlen <= sizeof(struct in_addr) * 8);
a = prefix_touchar(prefix);
if (with_len) {
sprintf (buff, "%d.%d.%d.%d/%d", a[0], a[1], a[2], a[3],
prefix->bitlen);
}
else {
sprintf(buff, "%d.%d.%d.%d/%d", a[0], a[1], a[2], a[3], prefix->bitlen);
} else {
sprintf(buff, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
}
return (buff);
}
#ifdef HAVE_IPV6
else if (prefix->family == AF_INET6) {
char *r;
r = (char *) inet_ntop (AF_INET6, &prefix->add.sin6, buff, 48 /* a guess value */ );
r = (char *)inet_ntop(AF_INET6, &prefix->add.sin6, buff,
48 /* a guess value */);
if (r && with_len) {
assert(prefix->bitlen <= sizeof(struct in6_addr) * 8);
sprintf(buff + strlen(buff), "/%d", prefix->bitlen);
}
return (buff);
}
#endif /* HAVE_IPV6 */
else
return (NULL);
}
@ -228,42 +193,39 @@ prefix_toa2x (prefix_t *prefix, char *buff, int with_len)
/* prefix_toa2
* convert prefix information to ascii string
*/
char *
prefix_toa2 (prefix_t *prefix, char *buff)
char *prefix_toa2(prefix_t *prefix, char *buff)
{
return (prefix_toa2x(prefix, buff, 0));
}
/* prefix_toa
*/
char *
prefix_toa (prefix_t * prefix)
char *prefix_toa(prefix_t *prefix)
{
return (prefix_toa2(prefix, (char *)NULL));
}
prefix_t *
New_Prefix2 (int family, void *dest, int bitlen, prefix_t *prefix)
prefix_t *New_Prefix2(int family, void *dest, int bitlen, prefix_t *prefix)
{
int dynamic_allocated = 0;
int default_bitlen = sizeof(struct in_addr) * 8;
#ifdef HAVE_IPV6
if (family == AF_INET6) {
default_bitlen = sizeof(struct in6_addr) * 8;
if (prefix == NULL) {
prefix = calloc(1, sizeof(prefix_t));
if (prefix == NULL)
out_of_memory("patricia/new_prefix2: unable to allocate memory");
dynamic_allocated++;
}
memcpy(&prefix->add.sin6, dest, sizeof(struct in6_addr));
}
else
} else
#endif /* HAVE_IPV6 */
if (family == AF_INET) {
if (prefix == NULL) {
#ifndef NT
prefix = calloc(1, sizeof (prefix_t));
prefix = calloc(1, sizeof(prefix4_t));
if (prefix == NULL)
out_of_memory("patricia/new_prefix2: unable to allocate memory");
#else
@ -277,8 +239,7 @@ New_Prefix2 (int family, void *dest, int bitlen, prefix_t *prefix)
dynamic_allocated++;
}
memcpy(&prefix->add.sin, dest, sizeof(struct in_addr));
}
else {
} else {
return (NULL);
}
@ -288,25 +249,26 @@ New_Prefix2 (int family, void *dest, int bitlen, prefix_t *prefix)
if (dynamic_allocated) {
prefix->ref_count++;
}
/* fprintf(stderr, "[C %s, %d]\n", prefix_toa (prefix), prefix->ref_count); */
/* fprintf(stderr, "[C %s, %d]\n", prefix_toa (prefix), prefix->ref_count);
*/
return (prefix);
}
prefix_t *
New_Prefix (int family, void *dest, int bitlen)
prefix_t *New_Prefix(int family, void *dest, int bitlen)
{
return (New_Prefix2(family, dest, bitlen, NULL));
}
/* ascii2prefix
*/
prefix_t *
ascii2prefix (int family, char *string)
prefix_t *ascii2prefix(int family, char *string)
{
u_long bitlen, maxbitlen = 0;
char *cp;
struct in_addr sin;
#ifdef HAVE_IPV6
struct in6_addr sin6;
#endif /* HAVE_IPV6 */
int result;
char save[MAXLINE];
@ -316,15 +278,20 @@ ascii2prefix (int family, char *string)
/* easy way to handle both families */
if (family == 0) {
family = AF_INET;
if (strchr (string, ':')) family = AF_INET6;
#ifdef HAVE_IPV6
if (strchr(string, ':'))
family = AF_INET6;
#endif /* HAVE_IPV6 */
}
if (family == AF_INET) {
maxbitlen = sizeof(struct in_addr) * 8;
}
#ifdef HAVE_IPV6
else if (family == AF_INET6) {
maxbitlen = sizeof(struct in6_addr) * 8;
}
#endif /* HAVE_IPV6 */
if ((cp = strchr(string, '/')) != NULL) {
bitlen = atol(cp + 1);
@ -334,10 +301,9 @@ ascii2prefix (int family, char *string)
memcpy(save, string, cp - string);
save[cp - string] = '\0';
string = save;
if (bitlen > maxbitlen)
if (/* bitlen < 0 || */ bitlen > maxbitlen)
bitlen = maxbitlen;
}
else {
} else {
bitlen = maxbitlen;
}
@ -347,6 +313,7 @@ ascii2prefix (int family, char *string)
return (New_Prefix(AF_INET, &sin, bitlen));
}
#ifdef HAVE_IPV6
else if (family == AF_INET6) {
// Get rid of this with next IPv6 upgrade
#if defined(NT) && !defined(HAVE_INET_NTOP)
@ -358,12 +325,12 @@ ascii2prefix (int family, char *string)
#endif /* NT */
return (New_Prefix(AF_INET6, &sin6, bitlen));
}
#endif /* HAVE_IPV6 */
else
return (NULL);
}
prefix_t *
Ref_Prefix (prefix_t * prefix)
prefix_t *Ref_Prefix(prefix_t *prefix)
{
if (prefix == NULL)
return (NULL);
@ -372,16 +339,17 @@ Ref_Prefix (prefix_t * prefix)
return (New_Prefix2(prefix->family, &prefix->add, prefix->bitlen, NULL));
}
prefix->ref_count++;
/* fprintf(stderr, "[A %s, %d]\n", prefix_toa (prefix), prefix->ref_count); */
/* fprintf(stderr, "[A %s, %d]\n", prefix_toa (prefix), prefix->ref_count);
*/
return (prefix);
}
void
Deref_Prefix (prefix_t * prefix)
void Deref_Prefix(prefix_t *prefix)
{
if (prefix == NULL)
return;
/* for secure programming, raise an assert. no static prefix can call this */
/* for secure programming, raise an assert. no static prefix can call this
*/
assert(prefix->ref_count > 0);
prefix->ref_count--;
@ -400,8 +368,7 @@ static int num_active_patricia = 0;
/* these routines support continuous mask only */
patricia_tree_t *
New_Patricia (int maxbits)
patricia_tree_t *New_Patricia(int maxbits)
{
patricia_tree_t *patricia = calloc(1, sizeof *patricia);
if (patricia == NULL)
@ -415,14 +382,12 @@ New_Patricia (int maxbits)
return (patricia);
}
/*
* if func is supplied, it will be called as func(node->data)
* before deleting the node
*/
void
Clear_Patricia (patricia_tree_t *patricia, data_fn_t func)
void Clear_Patricia(patricia_tree_t *patricia, data_fn_t func)
{
assert(patricia);
if (patricia->head) {
@ -439,8 +404,7 @@ Clear_Patricia (patricia_tree_t *patricia, data_fn_t func)
Deref_Prefix(Xrn->prefix);
if (Xrn->data && func)
func(Xrn->data);
}
else {
} else {
assert(Xrn->data == NULL);
}
Delete(Xrn);
@ -464,33 +428,30 @@ Clear_Patricia (patricia_tree_t *patricia, data_fn_t func)
/* Delete (patricia); */
}
void
Destroy_Patricia (patricia_tree_t *patricia, data_fn_t func)
void Destroy_Patricia(patricia_tree_t *patricia, data_fn_t func)
{
Clear_Patricia(patricia, func);
Delete(patricia);
num_active_patricia--;
}
/*
* if func is supplied, it will be called as func(node->prefix, node->data)
*/
void
patricia_process (patricia_tree_t *patricia, prefix_data_fn_t func)
void patricia_process(patricia_tree_t *patricia, prefix_data_fn_t func)
{
patricia_node_t *node;
assert(func);
PATRICIA_WALK (patricia->head, node) {
PATRICIA_WALK(patricia->head, node)
{
func(node->prefix, node->data);
} PATRICIA_WALK_END;
}
PATRICIA_WALK_END;
}
size_t
patricia_walk_inorder(patricia_node_t *node, prefix_data_fn_t func)
size_t patricia_walk_inorder(patricia_node_t *node, prefix_data_fn_t func)
{
size_t n = 0;
assert(func);
@ -511,9 +472,8 @@ patricia_walk_inorder(patricia_node_t *node, prefix_data_fn_t func)
return n;
}
patricia_node_t *
patricia_search_exact (patricia_tree_t *patricia, prefix_t *prefix)
patricia_node_t *patricia_search_exact(patricia_tree_t *patricia,
prefix_t *prefix)
{
patricia_node_t *node;
u_char *addr;
@ -538,19 +498,16 @@ patricia_search_exact (patricia_tree_t *patricia, prefix_t *prefix)
fprintf(stderr, "patricia_search_exact: take right %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_exact: take right at %u\n",
node->bit);
fprintf(stderr, "patricia_search_exact: take right at %u\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->r;
}
else {
} else {
#ifdef PATRICIA_DEBUG
if (node->prefix)
fprintf(stderr, "patricia_search_exact: take left %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_exact: take left at %u\n",
node->bit);
fprintf(stderr, "patricia_search_exact: take left at %u\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->l;
}
@ -581,8 +538,8 @@ patricia_search_exact (patricia_tree_t *patricia, prefix_t *prefix)
return (NULL);
}
bool
patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_t ***list, int *n)
int patricia_search_all(patricia_tree_t *patricia, prefix_t *prefix,
patricia_node_t ***list, int *n)
{
patricia_node_t *node;
patricia_node_t *stack[PATRICIA_MAXBITS + 1];
@ -600,7 +557,7 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
*n = 0;
if (patricia->head == NULL)
return (NULL);
return 0;
node = patricia->head;
addr = prefix_touchar(prefix);
@ -622,8 +579,7 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
fprintf(stderr, "patricia_search_all: take right %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_all: take right at %d\n",
node->bit);
fprintf(stderr, "patricia_search_all: take right at %d\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->r;
} else {
@ -632,8 +588,7 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
fprintf(stderr, "patricia_search_all: take left %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_all: take left at %d\n",
node->bit);
fprintf(stderr, "patricia_search_all: take left at %d\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->l;
}
@ -656,9 +611,10 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
#endif /* PATRICIA_DEBUG */
if (cnt <= 0)
return false;
return 0;
// ok, now we have an upper bound of how much we can return. Let's just alloc that...
// ok, now we have an upper bound of how much we can return. Let's just alloc
// that...
patricia_node_t **outlist = calloc(cnt, sizeof(patricia_node_t *));
if (outlist == NULL)
out_of_memory("patricia/patricia_search_all: unable to allocate memory");
@ -669,7 +625,8 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
fprintf(stderr, "patricia_search_all: pop %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
#endif /* PATRICIA_DEBUG */
if (comp_with_mask (prefix_tochar (node->prefix), prefix_tochar (prefix), node->prefix->bitlen)) {
if (comp_with_mask(prefix_tochar(node->prefix), prefix_tochar(prefix),
node->prefix->bitlen)) {
#ifdef PATRICIA_DEBUG
fprintf(stderr, "patricia_search_all: found %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
@ -679,13 +636,12 @@ patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_
}
}
*list = outlist;
return (*n == 0);
return *n != 0 ? 1 : 0;
}
/* if inclusive != 0, "best" may be the given prefix itself */
patricia_node_t *
patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix, int inclusive)
patricia_node_t *patricia_search_best2(patricia_tree_t *patricia,
prefix_t *prefix, int inclusive)
{
patricia_node_t *node;
patricia_node_t *stack[PATRICIA_MAXBITS + 1];
@ -720,19 +676,16 @@ patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix, int inclusiv
fprintf(stderr, "patricia_search_best: take right %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_best: take right at %u\n",
node->bit);
fprintf(stderr, "patricia_search_best: take right at %u\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->r;
}
else {
} else {
#ifdef PATRICIA_DEBUG
if (node->prefix)
fprintf(stderr, "patricia_search_best: take left %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
else
fprintf (stderr, "patricia_search_best: take left at %u\n",
node->bit);
fprintf(stderr, "patricia_search_best: take left at %u\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->l;
}
@ -763,9 +716,9 @@ patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix, int inclusiv
fprintf(stderr, "patricia_search_best: pop %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
#endif /* PATRICIA_DEBUG */
if (comp_with_mask (prefix_tochar (node->prefix),
prefix_tochar (prefix),
node->prefix->bitlen) && node->prefix->bitlen <= bitlen) {
if (comp_with_mask(prefix_tochar(node->prefix), prefix_tochar(prefix),
node->prefix->bitlen) &&
node->prefix->bitlen <= bitlen) {
#ifdef PATRICIA_DEBUG
fprintf(stderr, "patricia_search_best: found %s/%d\n",
prefix_toa(node->prefix), node->prefix->bitlen);
@ -776,16 +729,13 @@ patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix, int inclusiv
return (NULL);
}
patricia_node_t *
patricia_search_best (patricia_tree_t *patricia, prefix_t *prefix)
patricia_node_t *patricia_search_best(patricia_tree_t *patricia,
prefix_t *prefix)
{
return (patricia_search_best2(patricia, prefix, 1));
}
patricia_node_t *
patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
patricia_node_t *patricia_lookup(patricia_tree_t *patricia, prefix_t *prefix)
{
patricia_node_t *node, *new_node, *parent, *glue;
u_char *addr, *test_addr;
@ -800,7 +750,6 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
node = calloc(1, sizeof *node);
if (node == NULL)
out_of_memory("patricia/patricia_lookup: unable to allocate memory");
node->bit = prefix->bitlen;
node->prefix = Ref_Prefix(prefix);
node->parent = NULL;
@ -833,8 +782,7 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
fprintf(stderr, "patricia_lookup: take right at %u\n", node->bit);
#endif /* PATRICIA_DEBUG */
node = node->r;
}
else {
} else {
if (node->l == NULL)
break;
#ifdef PATRICIA_DEBUG
@ -852,8 +800,8 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
assert(node->prefix);
#ifdef PATRICIA_DEBUG
fprintf (stderr, "patricia_lookup: stop at %s/%d\n",
prefix_toa (node->prefix), node->prefix->bitlen);
fprintf(stderr, "patricia_lookup: stop at %s/%d\n", prefix_toa(node->prefix),
node->prefix->bitlen);
#endif /* PATRICIA_DEBUG */
test_addr = prefix_touchar(node->prefix);
@ -914,7 +862,6 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
new_node = calloc(1, sizeof *new_node);
if (new_node == NULL)
out_of_memory("patricia/patricia_lookup: unable to allocate memory");
new_node->bit = prefix->bitlen;
new_node->prefix = Ref_Prefix(prefix);
new_node->parent = NULL;
@ -928,8 +875,7 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
BIT_TEST(addr[node->bit >> 3], 0x80 >> (node->bit & 0x07))) {
assert(node->r == NULL);
node->r = new_node;
}
else {
} else {
assert(node->l == NULL);
node->l = new_node;
}
@ -944,19 +890,16 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
if (bitlen < patricia->maxbits &&
BIT_TEST(test_addr[bitlen >> 3], 0x80 >> (bitlen & 0x07))) {
new_node->r = node;
}
else {
} else {
new_node->l = node;
}
new_node->parent = node->parent;
if (node->parent == NULL) {
assert(patricia->head == node);
patricia->head = new_node;
}
else if (node->parent->r == node) {
} else if (node->parent->r == node) {
node->parent->r = new_node;
}
else {
} else {
node->parent->l = new_node;
}
node->parent = new_node;
@ -964,12 +907,10 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
fprintf(stderr, "patricia_lookup: new_node #3 %s/%d (parent)\n",
prefix_toa(prefix), prefix->bitlen);
#endif /* PATRICIA_DEBUG */
}
else {
} else {
glue = calloc(1, sizeof *glue);
if (glue == NULL)
out_of_memory("patricia/patricia_lookup: unable to allocate memory");
glue->bit = differ_bit;
glue->prefix = NULL;
glue->parent = node->parent;
@ -979,8 +920,7 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
BIT_TEST(addr[differ_bit >> 3], 0x80 >> (differ_bit & 0x07))) {
glue->r = new_node;
glue->l = node;
}
else {
} else {
glue->r = node;
glue->l = new_node;
}
@ -989,11 +929,9 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
if (node->parent == NULL) {
assert(patricia->head == node);
patricia->head = glue;
}
else if (node->parent->r == node) {
} else if (node->parent->r == node) {
node->parent->r = glue;
}
else {
} else {
node->parent->l = glue;
}
node->parent = glue;
@ -1005,9 +943,7 @@ patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix)
return (new_node);
}
void
patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
void patricia_remove(patricia_tree_t *patricia, patricia_node_t *node)
{
patricia_node_t *parent, *child;
@ -1049,8 +985,7 @@ patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
if (parent->r == node) {
parent->r = NULL;
child = parent->l;
}
else {
} else {
assert(parent->l == node);
parent->l = NULL;
child = parent->r;
@ -1064,11 +999,9 @@ patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
if (parent->parent == NULL) {
assert(patricia->head == parent);
patricia->head = child;
}
else if (parent->parent->r == parent) {
} else if (parent->parent->r == parent) {
parent->parent->r = child;
}
else {
} else {
assert(parent->parent->l == parent);
parent->parent->l = child;
}
@ -1084,8 +1017,7 @@ patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
#endif /* PATRICIA_DEBUG */
if (node->r) {
child = node->r;
}
else {
} else {
assert(node->l);
child = node->l;
}
@ -1104,8 +1036,7 @@ patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
if (parent->r == node) {
parent->r = child;
}
else {
} else {
assert(parent->l == node);
parent->l = child;
}
@ -1113,8 +1044,7 @@ patricia_remove (patricia_tree_t *patricia, patricia_node_t *node)
/* { from demo.c */
patricia_node_t *
make_and_lookup (patricia_tree_t *tree, char *string)
patricia_node_t *make_and_lookup(patricia_tree_t *tree, char *string)
{
prefix_t *prefix;
patricia_node_t *node;
@ -1126,8 +1056,7 @@ make_and_lookup (patricia_tree_t *tree, char *string)
return (node);
}
patricia_node_t *
try_search_exact (patricia_tree_t *tree, char *string)
patricia_node_t *try_search_exact(patricia_tree_t *tree, char *string)
{
prefix_t *prefix;
patricia_node_t *node;
@ -1136,17 +1065,15 @@ try_search_exact (patricia_tree_t *tree, char *string)
printf("try_search_exact: %s/%d\n", prefix_toa(prefix), prefix->bitlen);
if ((node = patricia_search_exact(tree, prefix)) == NULL) {
printf("try_search_exact: not found\n");
}
else {
printf ("try_search_exact: %s/%d found\n",
prefix_toa (node->prefix), node->prefix->bitlen);
} else {
printf("try_search_exact: %s/%d found\n", prefix_toa(node->prefix),
node->prefix->bitlen);
}
Deref_Prefix(prefix);
return (node);
}
void
lookup_then_remove (patricia_tree_t *tree, char *string)
void lookup_then_remove(patricia_tree_t *tree, char *string)
{
patricia_node_t *node;
@ -1154,8 +1081,7 @@ lookup_then_remove (patricia_tree_t *tree, char *string)
patricia_remove(tree, node);
}
patricia_node_t *
try_search_best (patricia_tree_t *tree, char *string)
patricia_node_t *try_search_best(patricia_tree_t *tree, char *string)
{
prefix_t *prefix;
patricia_node_t *node;
@ -1165,8 +1091,8 @@ try_search_best (patricia_tree_t *tree, char *string)
if ((node = patricia_search_best(tree, prefix)) == NULL)
printf("try_search_best: not found\n");
else
printf ("try_search_best: %s/%d found\n",
prefix_toa (node->prefix), node->prefix->bitlen);
printf("try_search_best: %s/%d found\n", prefix_toa(node->prefix),
node->prefix->bitlen);
Deref_Prefix(prefix);
return (node);
}

70
src/3rdparty/patricia.h vendored
View file

@ -1,16 +1,5 @@
/*
* This code originates from Dave Plonka's Net::Security perl module. An adaptation
* of it in C is kept at https://github.com/CAIDA/cc-common/tree/master/libpatricia.
* That repository is considered the upstream version for Zeek's fork. We make some
* custom changes to this upstream:
* - Replace void_fn_t with data_fn_t and prefix_data_fn_t
* - Add patricia_search_all method
*
* The current version is based on commit 4a2c61374f507a420d28bd9084c976142d279605
* from that repo.
*/
/*
* $Id: patricia.h,v 1.6 2005/12/07 20:53:01 dplonka Exp $
* Dave Plonka <plonka@doit.wisc.edu>
*
* This product includes software developed by the University of Michigan,
@ -23,6 +12,19 @@
* some other things it could be used as a standalone API.
*/
/*
* This code originates from Dave Plonka's Net::Security perl module. An
* adaptation of it in C is kept at
* https://github.com/CAIDA/cc-common/tree/master/libpatricia. That repository
* is considered the upstream version for Zeek's fork. We make some custom
* changes to this upstream:
* - Replace void_fn_t with data_fn_t and prefix_data_fn_t
* - Add patricia_search_all method
*
* The current version is based on commit
* fd262ab5ac5bae8b0d4a8b5e2e723115b1846376 from that repo.
*/
/* From copyright.txt:
*
* Copyright (c) 1997, 1998, 1999
@ -53,14 +55,19 @@
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#ifndef _PATRICIA_H
#define _PATRICIA_H
#define HAVE_IPV6
/* typedef unsigned int u_int; */
typedef void (*void_fn_t)();
/* { from defs.h */
#define prefix_touchar(prefix) ((u_char *)&(prefix)->add.sin)
#define MAXLINE 1024
@ -96,7 +103,9 @@ typedef struct _prefix_t {
int ref_count; /* reference count */
union {
struct in_addr sin;
#ifdef HAVE_IPV6
struct in6_addr sin6;
#endif /* IPV6 */
} add;
} prefix_t;
@ -120,12 +129,14 @@ typedef struct _patricia_tree_t {
int num_active_node; /* for debug purpose */
} patricia_tree_t;
patricia_node_t *patricia_search_exact (patricia_tree_t *patricia, prefix_t *prefix);
bool patricia_search_all (patricia_tree_t *patricia, prefix_t *prefix, patricia_node_t ***list, int *n);
patricia_node_t *patricia_search_best (patricia_tree_t *patricia, prefix_t *prefix);
patricia_node_t * patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix,
int inclusive);
patricia_node_t *patricia_search_exact(patricia_tree_t *patricia,
prefix_t *prefix);
int patricia_search_all(patricia_tree_t *patricia, prefix_t *prefix,
patricia_node_t ***list, int *n);
patricia_node_t *patricia_search_best(patricia_tree_t *patricia,
prefix_t *prefix);
patricia_node_t *patricia_search_best2(patricia_tree_t *patricia,
prefix_t *prefix, int inclusive);
patricia_node_t *patricia_lookup(patricia_tree_t *patricia, prefix_t *prefix);
void patricia_remove(patricia_tree_t *patricia, patricia_node_t *node);
patricia_tree_t *New_Patricia(int maxbits);
@ -139,11 +150,9 @@ char *prefix_toa (prefix_t * prefix);
/* { from demo.c */
prefix_t *
ascii2prefix (int family, char *string);
prefix_t *ascii2prefix(int family, char *string);
patricia_node_t *
make_and_lookup (patricia_tree_t *tree, char *string);
patricia_node_t *make_and_lookup(patricia_tree_t *tree, char *string);
/* } */
@ -170,13 +179,15 @@ do { \
while ((Xnode = Xrn)) { \
if (1)
#define PATRICIA_WALK_BREAK { \
#define PATRICIA_WALK_BREAK \
{ \
if (Xsp != Xstack) { \
Xrn = *(--Xsp); \
} else { \
Xrn = (patricia_node_t *)0; \
} \
continue; }
continue; \
}
#define PATRICIA_WALK_END \
if (Xrn->l) { \
@ -192,4 +203,7 @@ do { \
Xrn = (patricia_node_t *)0; \
} \
} \
} while (0)
} \
while (0)
#endif /* _PATRICIA_H */