error_test.cpp

error_test.cpp

/* compile with 
   gcc -ggdb -O0 -lssl -lcrypto -ldl -pthread -o ssltest error_test.cpp
*/
#include <openssl/ssl.h>
#include <dlfcn.h>
#include <pthread.h>

static void *lib = 0;
static int (*initfunc)(int,char**,char**);
static void (*endfunc)(void);

static void loadIt()
{
	lib = dlopen("libmysqlclient.so.18", RTLD_LAZY);
	initfunc = (int(*)(int,char**,char**))dlsym(lib, "mysql_server_init");
	endfunc = (void(*)(void))dlsym(lib, "mysql_server_end");
}

static void unloadIt()
{
	initfunc = 0;
	dlclose(lib);
	lib = 0;
}

int main(int argc, char *argv[])
{
	SSL_CTX *ctx = NULL;

	SSL_library_init();

	ctx = SSL_CTX_new(SSLv23_client_method());
	printf("before init ctx is %p\n", ctx);

	loadIt();
	initfunc(0, 0, 0);
	endfunc();
	unloadIt();

	ctx = SSL_CTX_new(SSLv23_client_method());
	printf("after init ctx is %p\n", ctx);
	
	SSL_library_init();

	ctx = SSL_CTX_new(SSLv23_client_method());
	printf("after SSL reinit ctx is %p\n", ctx);
}