Hi guys,
i'm working on a project that requires WinPcap to cature data traffic flowing
from all the virtual machines. I'm almost done with the program and it has
filtering. The only thing i face now is that i'm having this error.
argument of type "MYSQL_RES *" is incompatible with parameter of type const char
my objective is to extract data out from the database. I did it and stored it
into filter_exp but it doesn't work. The codes highlighted in red has an error
that i've mentioned on top. Let's see how i declare filter_exp. how do i make
it in a way when i receive the result from the database. it will just insert
whatever value into filter_exp. any conversion needed?
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------This
part has no
errors.-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------MYSQL_RES
*filter_exp;
MYSQL *conn; // pointer to MySQL structure
conn = mysql_init(NULL); // connection handle
// Connect to MySQL database // host address = localhost, username = root,
database = project mysql_real_connect(conn, "localhost", "root", "",
"project", 0, NULL, 0);
mysql_query(conn, "SELECT Filter FROM setting"); /* Send a query to the
database. */ filter_exp = mysql_store_result(conn); /* Receive the result and
store it in filter_exp */ mysql_free_result(filter_exp); // free the
resources
sprintf(cmd6, "DELETE FROM start"); mysql_real_query(conn, cmd6 ,
strlen(cmd6));
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--
/* * Compiling + setting the filter * */
if (lDevice->addresses != NULL) /* Retrieve the mask of the
first address of the interface */ net=((struct sockaddr_in
*)(lDevice->addresses->netmask))->sin_addr.S_un.S_addr; else /* If
the interface is without an address we suppose to be in a C class network */
net=0xffffff;
if (pcap_compile(lIFCHandle, &lFCode, filter_exp , 0, net) == -1) {
fprintf(stderr, "Couldn't parse filter %s: %s\n", filter_exp,
pcap_geterr(lIFCHandle)); return(2); } if
(pcap_setfilter(lIFCHandle, &lFCode) == -1) { fprintf(stderr,
"Couldn't install filter %s: %s\n", filter_exp, pcap_geterr(lIFCHandle));
return(2); } _______________________________________________
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