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diff --git a/lib/pgsql_shim/pgsqlinterface.hpp b/lib/pgsql_shim/pgsqlinterface.hpp
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+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#ifndef PGSQLINTERFACE_H
+#define PGSQLINTERFACE_H
+
+#include "pgsql_shim/pgsql_shim_export.h"
+#include <memory>
+#include <libpq-fe.h>
+
+namespace icinga
+{
+
+struct PgsqlInterface
+{
+ PgsqlInterface(const PgsqlInterface&) = delete;
+ PgsqlInterface& operator=(PgsqlInterface&) = delete;
+
+ virtual void Destroy() = 0;
+
+ virtual void clear(PGresult *res) const = 0;
+ virtual char *cmdTuples(PGresult *res) const = 0;
+ virtual char *errorMessage(const PGconn *conn) const = 0;
+ virtual size_t escapeStringConn(PGconn *conn, char *to, const char *from, size_t length, int *error) const = 0;
+ virtual PGresult *exec(PGconn *conn, const char *query) const = 0;
+ virtual void finish(PGconn *conn) const = 0;
+ virtual char *fname(const PGresult *res, int field_num) const = 0;
+ virtual int getisnull(const PGresult *res, int tup_num, int field_num) const = 0;
+ virtual char *getvalue(const PGresult *res, int tup_num, int field_num) const = 0;
+ virtual int isthreadsafe() const = 0;
+ virtual int nfields(const PGresult *res) const = 0;
+ virtual int ntuples(const PGresult *res) const = 0;
+ virtual char *resultErrorMessage(const PGresult *res) const = 0;
+ virtual ExecStatusType resultStatus(const PGresult *res) const = 0;
+ virtual int serverVersion(const PGconn *conn) const = 0;
+ virtual PGconn *setdbLogin(const char *pghost, const char *pgport, const char *pgoptions, const char *pgtty, const char *dbName, const char *login, const char *pwd) const = 0;
+ virtual PGconn *connectdb(const char *conninfo) const = 0;
+ virtual ConnStatusType status(const PGconn *conn) const = 0;
+
+protected:
+ PgsqlInterface() = default;
+ ~PgsqlInterface() = default;
+};
+
+struct PgsqlInterfaceDeleter
+{
+ void operator()(PgsqlInterface *ifc) const
+ {
+ ifc->Destroy();
+ }
+};
+
+}
+
+extern "C"
+{
+ PGSQL_SHIM_EXPORT icinga::PgsqlInterface *create_pgsql_shim();
+}
+
+typedef icinga::PgsqlInterface *(*create_pgsql_shim_ptr)();
+
+#endif /* PGSQLINTERFACE_H */