extern "C" __declspec(dllexport) int Load()
{
mir_getLP(&pluginInfo);
srand((unsigned)time(0));
bayesdb = NULL;
if (_getOptB("BayesEnabled", defaultBayesEnabled)) {
if (CheckBayes()) {
OpenBayes();
if (_getOptB("BayesAutolearnNotApproved", defaultBayesAutolearnNotApproved)) {
dequeue_messages();
last_queue_check = time(NULL);
}
}
}
hModulesLoaded = HookEvent(ME_SYSTEM_MODULESLOADED, OnModulesLoaded);
hDBContactAdded = HookEvent(ME_DB_CONTACT_ADDED, OnDBContactAdded);
hDBEventAdded = HookEvent(ME_DB_EVENT_ADDED, OnDBEventAdded);
hDBEventFilterAdd = HookEvent(ME_DB_EVENT_FILTER_ADD, OnDBEventFilterAdd);
return 0;
}
void queue_message(MCONTACT hContact, DWORD msgtime, TCHAR *message)
{
char *tmp;
sqlite3_stmt *stmt;
if (!_getOptB("BayesAutolearnApproved", defaultBayesAutolearnApproved) &&
!_getOptB("BayesAutolearnNotApproved", defaultBayesAutolearnNotApproved))
return;
if (_getOptB("BayesEnabled", defaultBayesEnabled) == 0)
return;
if (bayesdb == NULL)
OpenBayes();
sqlite3_prepare_v2(bayesdb, "INSERT INTO queue VALUES(?,?,?)", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, (DWORD)hContact);
sqlite3_bind_int(stmt, 2, msgtime);
tmp = mir_u2a(message);
sqlite3_bind_text(stmt, 3, tmp, (int)mir_strlen(tmp), NULL);
sqlite3_step(stmt);
mir_free(tmp);
sqlite3_finalize(stmt);
}
/* Learn one message as either SPAM or HAM as specified in type parameter */
void learn(int type, TCHAR *msg)
{
char *tok, *message;
BYTE digest[16];
char sql_select[200], sql_update[200], sql_insert[200], sql_counter[200];
sqlite3_stmt *stmt;
#ifdef _DEBUG
sqlite3_stmt *stmtdbg;
#endif
if (_getOptB("BayesEnabled", defaultBayesEnabled) == 0)
return;
if (bayesdb == NULL)
OpenBayes();
message = mir_u2a(msg);
tok = strtok(message, DELIMS);
mir_snprintf(sql_counter, "UPDATE stats SET value=value+1 WHERE key='%s'", type == SPAM ? "spam_msgcount" : "ham_msgcount");
mir_snprintf(sql_select, "SELECT 1 FROM %s WHERE token=?", type == SPAM ? "spam" : "ham");
mir_snprintf(sql_update, "UPDATE %s SET num=num+1 WHERE token=?", type ? "spam" : "ham");
mir_snprintf(sql_insert, "INSERT INTO %s VALUES(?, 1)", type ? "spam" : "ham");
#ifdef _DEBUG
sqlite3_exec(bayesdbg, "BEGIN", NULL, NULL, NULL);
#endif
sqlite3_exec(bayesdb, "BEGIN", NULL, NULL, NULL);
while (tok) {
if (!is_token_valid(tok)) {
tok = strtok(NULL, DELIMS);
continue;
}
tokenhash(tok, digest);
sqlite3_prepare_v2(bayesdb, sql_select, -1, &stmt, NULL);
sqlite3_bind_blob(stmt, 1, digest, 16, SQLITE_STATIC);
if (SQLITE_ROW == sqlite3_step(stmt)) {
sqlite3_finalize(stmt);
sqlite3_prepare_v2(bayesdb, sql_update, -1, &stmt, NULL);
} else {
sqlite3_finalize(stmt);
sqlite3_prepare_v2(bayesdb, sql_insert, -1, &stmt, NULL);
}
sqlite3_bind_blob(stmt, 1, digest, 16, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
#ifdef _DEBUG
sqlite3_prepare_v2(bayesdbg, sql_select, -1, &stmtdbg, NULL);
sqlite3_bind_text(stmtdbg, 1, tok, (int)mir_strlen(tok), NULL);
if (SQLITE_ROW == sqlite3_step(stmtdbg)) {
sqlite3_finalize(stmtdbg);
sqlite3_prepare_v2(bayesdbg, sql_update, -1, &stmtdbg, NULL);
} else {
sqlite3_finalize(stmtdbg);
sqlite3_prepare_v2(bayesdbg, sql_insert, -1, &stmtdbg, NULL);
}
sqlite3_bind_text(stmtdbg, 1, tok, (int)mir_strlen(tok), SQLITE_STATIC);
sqlite3_step(stmtdbg);
sqlite3_finalize(stmtdbg);
#endif
tok = strtok(NULL, DELIMS);
}
sqlite3_exec(bayesdb, sql_counter, NULL, NULL, NULL);
sqlite3_exec(bayesdb, "COMMIT", NULL, NULL, NULL);
#ifdef _DEBUG
sqlite3_exec(bayesdbg, "COMMIT", NULL, NULL, NULL);
#endif
mir_free(message);
}
