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proxysql/test/tap/tests/pgsql-unsupported_feature_t...

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/**
* @file pgsql-unsupported_feature_test-t.cpp
* @brief Ensures that ProxySQL does not crash and maintains the connection/session integrity when unsupported queries are executed.
* Currently validates:
* 1) Prepare Statement
* 2) COPY
*/
#include <string>
#include <sstream>
#include "libpq-fe.h"
#include "command_line.h"
#include "tap.h"
#include "utils.h"
CommandLine cl;
PGconn* create_new_connection(bool with_ssl) {
std::stringstream ss;
ss << "host=" << cl.pgsql_host << " port=" << cl.pgsql_port;
ss << " user=" << cl.pgsql_username << " password=" << cl.pgsql_password;
if (with_ssl) {
ss << " sslmode=require";
} else {
ss << " sslmode=disable";
}
PGconn* conn = PQconnectdb(ss.str().c_str());
const bool res = (conn && PQstatus(conn) == CONNECTION_OK);
ok(res, "Connection created successfully. %s", PQerrorMessage(conn));
if (res) return conn;
PQfinish(conn);
return nullptr;
}
void check_transaction_state(PGconn* conn) {
PGresult* res;
// Check if the transaction is still active
res = PQexec(conn, "SELECT 1");
ok(PQresultStatus(res) == PGRES_TUPLES_OK && PQtransactionStatus(conn) == PQTRANS_INTRANS,
"Transaction state was not affected by the error. %s", PQerrorMessage(conn));
PQclear(res);
}
void check_prepared_statement_binary(PGconn* conn) {
PGresult* res;
const char* paramValues[1] = { "1" };
// Start a transaction
res = PQexec(conn, "BEGIN");
if (PQresultStatus(res) != PGRES_COMMAND_OK) {
BAIL_OUT("Could not start transaction. %s", PQerrorMessage(conn));
}
PQclear(res);
// Test: Prepare a statement (using binary mode)
res = PQprepare(conn, "myplan", "SELECT $1::int", 1, NULL);
ok(PQresultStatus(res) != PGRES_COMMAND_OK, "Prepare statement failed. %s", PQerrorMessage(conn));
PQclear(res);
// Execute the prepared statement using binary protocol
res = PQexecPrepared(conn, "myplan", 1, paramValues, NULL, NULL, 1); // Binary result format (1)
ok(PQresultStatus(res) != PGRES_COMMAND_OK && PQresultStatus(res) != PGRES_TUPLES_OK, "Prepare statements are not supported for PostgreSQL: %s", PQerrorMessage(conn));
PQclear(res);
// Check if the transaction state is still active
check_transaction_state(conn);
// End the transaction
res = PQexec(conn, "ROLLBACK");
PQclear(res);
}
void check_copy_binary(PGconn* conn) {
PGresult* res;
// Start a transaction
res = PQexec(conn, "BEGIN");
if (PQresultStatus(res) != PGRES_COMMAND_OK) {
BAIL_OUT("Could not start transaction. %s", PQerrorMessage(conn));
}
PQclear(res);
// Test: COPY binary format
res = PQexec(conn, "COPY (SELECT 1) TO STDOUT (FORMAT BINARY)");
ok(PQresultStatus(res) != PGRES_COPY_OUT, "COPY binary command failed to start. %s", PQerrorMessage(conn));
PQclear(res);
// Attempt to fetch data in binary mode, expect it to fail
char buffer[256];
int ret = PQgetCopyData(conn, (char**)&buffer, 1); // Binary mode (1)
ok(ret == -2, "COPY in binary mode should have failed. %s", PQerrorMessage(conn));
// Check if the transaction state is still active
check_transaction_state(conn);
// End the transaction
res = PQexec(conn, "ROLLBACK");
PQclear(res);
}
void execute_tests(bool with_ssl) {
PGconn* conn = create_new_connection(with_ssl);
if (conn == nullptr)
return;
// Test 1: Prepared Statement in binary mode
//check_prepared_statement_binary(conn);
// Test 2: COPY in binary mode
//check_copy_binary(conn);
// Close the connection
PQfinish(conn);
}
int main(int argc, char** argv) {
plan(1); // Total number of tests planned
if (cl.getEnv())
return exit_status();
execute_tests(false); // without SSL
return exit_status();
}