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Merge remote-tracking branch 'origin/fastpath'

Browse source 
Closes #986

* origin/fastpath:
  Do not allocate one OpaqueType per OpaqueVal.
  Fix memory-leak in OpaqueVal.
This commit is contained in:
Robin Sommer 2013-05-03 15:54:47 -07:00
commit 75cbce8ea4
6 changed files with 43 additions and 6 deletions
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5
CHANGES
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@ -1,4 +1,9 @@
2.1-496 | 2013-05-03 15:54:47 -0700
* Fix memory leak and unnecessary allocations in OpaqueVal.
Addresses #986. (Matthias Vallentin)
2.1-492 | 2013-05-02 12:46:26 -0700 2.1-492 | 2013-05-02 12:46:26 -0700
* Work-around for sumstats framework not propagating updates after * Work-around for sumstats framework not propagating updates after

2
VERSION
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@ -1 +1 @@
2.1-492 2.1-496

10
src/NetVar.cc
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@ -239,6 +239,11 @@ TableType* record_field_table;
StringVal* cmd_line_bpf_filter; StringVal* cmd_line_bpf_filter;
OpaqueType* md5_type;
OpaqueType* sha1_type;
OpaqueType* sha256_type;
OpaqueType* entropy_type;
#include "const.bif.netvar_def" #include "const.bif.netvar_def"
#include "types.bif.netvar_def" #include "types.bif.netvar_def"
#include "event.bif.netvar_def" #include "event.bif.netvar_def"
@ -298,6 +303,11 @@ void init_general_global_var()
cmd_line_bpf_filter = cmd_line_bpf_filter =
internal_val("cmd_line_bpf_filter")->AsStringVal(); internal_val("cmd_line_bpf_filter")->AsStringVal();
md5_type = new OpaqueType("md5");
sha1_type = new OpaqueType("sha1");
sha256_type = new OpaqueType("sha256");
entropy_type = new OpaqueType("entropy");
} }
void init_net_var() void init_net_var()

6
src/NetVar.h
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@ -243,6 +243,12 @@ extern TableType* record_field_table;
extern StringVal* cmd_line_bpf_filter; extern StringVal* cmd_line_bpf_filter;
class OpaqueType;
extern OpaqueType* md5_type;
extern OpaqueType* sha1_type;
extern OpaqueType* sha256_type;
extern OpaqueType* entropy_type;
// Initializes globals that don't pertain to network/event analysis. // Initializes globals that don't pertain to network/event analysis.
extern void init_general_global_var(); extern void init_general_global_var();

16
src/OpaqueVal.cc
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@ -1,4 +1,5 @@
#include "OpaqueVal.h" #include "OpaqueVal.h"
#include "NetVar.h"
#include "Reporter.h" #include "Reporter.h"
#include "Serializer.h" #include "Serializer.h"
@ -72,6 +73,10 @@ bool HashVal::DoUnserialize(UnserialInfo* info)
return UNSERIALIZE(&valid); return UNSERIALIZE(&valid);
} }
MD5Val::MD5Val() : HashVal(md5_type)
{
}
void MD5Val::digest(val_list& vlist, u_char result[MD5_DIGEST_LENGTH]) void MD5Val::digest(val_list& vlist, u_char result[MD5_DIGEST_LENGTH])
{ {
MD5_CTX h; MD5_CTX h;
@ -189,6 +194,10 @@ bool MD5Val::DoUnserialize(UnserialInfo* info)
return true; return true;
} }
SHA1Val::SHA1Val() : HashVal(sha1_type)
{
}
void SHA1Val::digest(val_list& vlist, u_char result[SHA_DIGEST_LENGTH]) void SHA1Val::digest(val_list& vlist, u_char result[SHA_DIGEST_LENGTH])
{ {
SHA_CTX h; SHA_CTX h;
@ -297,6 +306,10 @@ bool SHA1Val::DoUnserialize(UnserialInfo* info)
return true; return true;
} }
SHA256Val::SHA256Val() : HashVal(sha256_type)
{
}
void SHA256Val::digest(val_list& vlist, u_char result[SHA256_DIGEST_LENGTH]) void SHA256Val::digest(val_list& vlist, u_char result[SHA256_DIGEST_LENGTH])
{ {
SHA256_CTX h; SHA256_CTX h;
@ -410,6 +423,9 @@ bool SHA256Val::DoUnserialize(UnserialInfo* info)
return true; return true;
} }
EntropyVal::EntropyVal() : OpaqueVal(entropy_type)
{
}
bool EntropyVal::Feed(const void* data, size_t size) bool EntropyVal::Feed(const void* data, size_t size)
{ {

8
src/OpaqueVal.h
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@ -36,7 +36,7 @@ public:
u_char key[MD5_DIGEST_LENGTH], u_char key[MD5_DIGEST_LENGTH],
u_char result[MD5_DIGEST_LENGTH]); u_char result[MD5_DIGEST_LENGTH]);
MD5Val() : HashVal(new OpaqueType("md5")) { } MD5Val();
protected: protected:
friend class Val; friend class Val;
@ -55,7 +55,7 @@ class SHA1Val : public HashVal {
public: public:
static void digest(val_list& vlist, u_char result[SHA_DIGEST_LENGTH]); static void digest(val_list& vlist, u_char result[SHA_DIGEST_LENGTH]);
SHA1Val() : HashVal(new OpaqueType("sha1")) { } SHA1Val();
protected: protected:
friend class Val; friend class Val;
@ -74,7 +74,7 @@ class SHA256Val : public HashVal {
public: public:
static void digest(val_list& vlist, u_char result[SHA256_DIGEST_LENGTH]); static void digest(val_list& vlist, u_char result[SHA256_DIGEST_LENGTH]);
SHA256Val() : HashVal(new OpaqueType("sha256")) { } SHA256Val();
protected: protected:
friend class Val; friend class Val;
@ -91,7 +91,7 @@ private:
class EntropyVal : public OpaqueVal { class EntropyVal : public OpaqueVal {
public: public:
EntropyVal() : OpaqueVal(new OpaqueType("entropy")) { } EntropyVal();
bool Feed(const void* data, size_t size); bool Feed(const void* data, size_t size);
bool Get(double *r_ent, double *r_chisq, double *r_mean, bool Get(double *r_ent, double *r_chisq, double *r_mean,