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Using RadixTree instead of list to storage IPs

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Used by the operator @ipMatch and variants, this structure storage all the IPs
addresses for later comparison. Last version was using RadixTree only if the
set of IPs was specified from files. IPs specified as parameters, was using
a chained list. Chained lists may affect the performance, since lookups in
worst case will be O(n). RadixTrees could provide better results depending
on the amount of elements and its contents.
This commit is contained in:
Felipe Zimmerle
2013-10-31 09:53:24 -07:00
parent 80185e2a90
commit 0037a0732a
7 changed files with 96 additions and 151 deletions
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10
apache2/re.h
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@@ -19,7 +19,6 @@
#define POSITIVE_VALUE 1
#define NEGATIVE_VALUE 2
typedef struct msre_ipmatch msre_ipmatch;
typedef struct msre_engine msre_engine;
typedef struct msre_ruleset msre_ruleset;
typedef struct msre_ruleset_internal msre_ruleset_internal;
@@ -38,6 +37,7 @@ typedef struct msre_cache_rec msre_cache_rec;
#include "apr_tables.h"
#include "modsecurity.h"
#include "msc_pcre.h"
#include "msc_tree.h"
#include "persist_dbm.h"
#include "apache2.h"
#include "http_config.h"
@@ -139,12 +139,6 @@ int DSOLOCAL msre_ruleset_phase_rule_remove_with_exception(msre_ruleset *ruleset
#define RULE_TYPE_LUA 3 /* SecRuleScript */
#endif
struct msre_ipmatch {
apr_ipsubnet_t *ipsubnet;
const char * address;
struct msre_ipmatch *next;
};
struct msre_rule {
apr_array_header_t *targets;
const char *op_name;
@@ -183,7 +177,7 @@ struct msre_rule {
int re_precomp;
int escape_re;
msre_ipmatch *ip_op;
TreeRoot *ip_op;
};
char DSOLOCAL *msre_rule_generate_unparsed(apr_pool_t *pool, const msre_rule *rule, const char *targets, const char *args, const char *actions);