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/*
* DevMemPatt.cpp:
* written by palmers / teso
*/
#include <DevMemPatt.hpp>
DevMemPatt::DevMemPatt ()
{
rw = new rwKernel ();
}
DevMemPatt::DevMemPatt (rwKernel *a)
{
rw = a;
}
DevMemPatt::~DevMemPatt ()
{
}
int DevMemPatt::compare_data_snippet (unsigned char *x, struct sfp *y)
{
bool i = false;
int ret = -1;
short a = 0,
b = 0;
while ((b < y->length) && (a < READ_BUFF_SIZE))
{
if ((x[a] == y->fp[b].val) || (y->fp[b].type == WWCARD))
{
if (i == false)
{
i = true;
ret = a;
}
b++;
}
else if (i == true)
{
i = false;
ret = -1;
b = 0;
}
a++;
}
return ret;
}
unsigned int DevMemPatt::find_patt (unsigned int s, \
unsigned int e, unsigned short l, unsigned char *snipp)
{
bool i = false;
int ret = -1;
unsigned short a = 0,
b = 0;
unsigned char *readBuff = NULL;
readBuff = new unsigned char[READ_BUFF_SIZE];
while (s < e)
{
rw->read (readBuff, READ_BUFF_SIZE, s);
while ((b < l) && (a < READ_BUFF_SIZE))
{
if (readBuff[a] == snipp[b])
{
if (i == false)
{
i = true;
ret = a;
}
b++;
}
else if (i == true)
{
i = false;
ret = -1;
b = 0;
}
a++;
}
if (ret != -1)
{
if (ret == 0)
return s;
s = s + ret - READ_BUFF_SIZE;
}
s += READ_BUFF_SIZE;
}
return 0;
}
unsigned int DevMemPatt::find_patt (struct sfp *a)
{
int x = -1;
unsigned int s = a->start_addr,
e = a->stop_addr;
unsigned char *readBuff = NULL;
readBuff = new unsigned char[READ_BUFF_SIZE];
while (s < e)
{
rw->read (readBuff, READ_BUFF_SIZE, s);
if ((x = compare_data_snippet (readBuff, a)) != -1)
{
if (x == 0)
return s;
s = s + x - READ_BUFF_SIZE;
}
s += READ_BUFF_SIZE;
}
return 0;
}
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