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/* Copyright 2003 - 2005 Netherlabs BV, bert.hubert@netherlabs.nl. See LICENSE
for more information. */
#include <string>
#include "spgsql.hh"
#include <iostream>
#include "pdns/logger.hh"
#include "pdns/dns.hh"
#include "pdns/namespaces.hh"
bool SPgSQL::s_dolog;
SPgSQL::SPgSQL(const string &database, const string &host, const string& port, const string &user,
const string &password)
{
d_db=0;
d_connectstr="";
if (!database.empty())
d_connectstr+="dbname="+database;
if (!user.empty())
d_connectstr+=" user="+user;
if(!host.empty())
d_connectstr+=" host="+host;
if(!port.empty())
d_connectstr+=" port="+port;
d_connectlogstr=d_connectstr;
if(!password.empty()) {
d_connectlogstr+=" password=<HIDDEN>";
d_connectstr+=" password="+password;
}
ensureConnect();
}
void SPgSQL::setLog(bool state)
{
s_dolog=state;
}
SPgSQL::~SPgSQL()
{
PQfinish(d_db);
}
SSqlException SPgSQL::sPerrorException(const string &reason)
{
return SSqlException(reason+string(": ")+(d_db ? PQerrorMessage(d_db) : "no connection"));
}
void SPgSQL::ensureConnect()
{
if(d_db)
PQfinish(d_db);
d_db=PQconnectdb(d_connectstr.c_str());
if (!d_db || PQstatus(d_db)==CONNECTION_BAD) {
try {
throw sPerrorException("Unable to connect to database, connect string: "+d_connectlogstr);
}
catch(...) {
if(d_db)
PQfinish(d_db);
d_db = 0;
throw;
}
}
}
int SPgSQL::doCommand(const string &query)
{
if(s_dolog)
L<<Logger::Warning<<"Command: "<<query<<endl;
bool first = true;
retry:
if(!(d_result=PQexec(d_db,query.c_str())) || PQresultStatus(d_result)!=PGRES_COMMAND_OK) {
string error("unknown reason");
if(d_result) {
error=PQresultErrorMessage(d_result);
PQclear(d_result);
}
if(PQstatus(d_db)==CONNECTION_BAD) {
ensureConnect();
if(first) {
first = false;
goto retry;
}
}
throw SSqlException("PostgreSQL failed to execute command: "+error);
}
if(d_result)
PQclear(d_result);
d_count=0;
return 0;
}
int SPgSQL::doQuery(const string &query)
{
if(s_dolog)
L<<Logger::Warning<<"Query: "<<query<<endl;
bool first = true;
retry:
if(!(d_result=PQexec(d_db,query.c_str())) || PQresultStatus(d_result)!=PGRES_TUPLES_OK) {
string error("unknown reason");
if(d_result) {
error=PQresultErrorMessage(d_result);
PQclear(d_result);
}
if(PQstatus(d_db)==CONNECTION_BAD) {
ensureConnect();
if(first) {
first = false;
goto retry;
}
}
throw SSqlException("PostgreSQL failed to execute command: "+error);
}
d_count=0;
return 0;
}
int SPgSQL::doQuery(const string &query, result_t &result)
{
result.clear();
if(s_dolog)
L<<Logger::Warning<<"Query: "<<query<<endl;
if(!(d_result=PQexec(d_db,query.c_str())) || PQresultStatus(d_result)!=PGRES_TUPLES_OK) {
string error("unknown reason");
if(d_result) {
error=PQresultErrorMessage(d_result);
PQclear(d_result);
}
throw SSqlException("PostgreSQL failed to execute command: "+error);
}
d_count=0;
row_t row;
while(getRow(row))
result.push_back(row);
return result.size();
}
bool SPgSQL::getRow(row_t &row)
{
row.clear();
if(d_count >= PQntuples(d_result)) {
PQclear(d_result);
return false;
}
for(int i=0;i<PQnfields(d_result);i++)
row.push_back(PQgetvalue(d_result,d_count,i) ?: "");
d_count++;
return true;
}
string SPgSQL::escape(const string &name)
{
string a;
for(string::const_iterator i=name.begin();i!=name.end();++i) {
if(*i=='\'' || *i=='\\')
a+='\\';
a+=*i;
}
return a;
}
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