pike.git/lib/modules/Sql.pmod/pgsql.pike:13a120dadc9bed09c7e9ce801dd89c1cd62d748c

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1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 /* * This is the PostgreSQL direct network module for Pike. * * TODO: support SSL connections */ //! This is an interface to the PostgreSQL database //! server. This module is independent of external libraries. //! Note that you @b{do not@} need to have a //! PostgreSQL server running on your host to use this module: you can //! connect to the database over a TCP/IP socket. //! //! This module replaces the functionality of the older @[Sql.postgres] //! and @[Postgres.postgres] modules. //! //! This module implements the PostgreSQL network protocol version 3. //! Refer to the PostgreSQL documentation for further details. //! //! @seealso //! @[Sql.Sql], @[Sql.postgres] #pike __REAL_VERSION__ //#define DEBUG 1 //#define DEBUGMORE 1 #ifdef DEBUG #define PD(X ...) werror(X) #define UNBUFFEREDIO 1 // Make all IO unbuffered #else #undef DEBUGMORE #define PD(X ...) #endif //#define NO_LOCKING 1 // This breaks the driver, do not enable, // only for benchmarking mutex performance #define USEPGsql 1 // Doesn't use Stdio.FILE, but PGassist #ifdef USEPGsql #define UNBUFFEREDIO 1 #endif #define FETCHLIMIT 1024 // Initial upper limit on the // number of rows to fetch across the // network at a time // 0 for no chunking // Needs to be >0 for interleaved // portals #define FETCHLIMITLONGRUN 1 // for long running background queries #define STREAMEXECUTES 1 // streams executes if defined #define MINPREPARELENGTH 16 // statements shorter than this will not // be cached #define PGSQL_DEFAULT_PORT 5432 #define PGSQL_DEFAULT_HOST "localhost" #define PREPSTMTPREFIX "pike_prep_" #define PORTALPREFIX "pike_portal_" #define FACTORPLAN 8 #define DRIVERNAME "pgsql" #define MARKSTART "{""{""{""{\n" // split string to avoid #define MARKERROR ">>>>" // foldeditors from recognising #define MARKEND "\n}""}""}""}" // it as a fold #define ERROR(X ...) predef::error(X) pgsql_result _portal; int _nextportal; int _closesent; int _fetchlimit=FETCHLIMIT; private int unnamedportalinuse; private int portalsinflight; private object conn; private string SSauthdata,cancelsecret; private int backendpid; private int backendstatus; private mapping(string:mixed) options; private string lastmessage; private mapping(string:array(mixed)) notifylist=([]); private mapping(string:string) msgresponse; private mapping(string:string) runtimeparameter; private enum state {unauthenticated,authenticated,readyforquery, parsecomplete,bindcomplete,commandcomplete,gotrowdescription, gotparameterdescription,dataready,dataprocessed,portalsuspended, copyinresponse}; private state mstate; private enum querystate {queryidle,inquery,cancelpending,canceled}; private querystate qstate; private mapping(string:mapping(string:mixed)) prepareds=([]); private int pstmtcount; private int pportalcount; private int totalhits; private int cachedepth=1024; // Maximum cachecountsum for prepared statements, // may be tuned by the application private int timeout=4096; // Queries running longer than this number of // seconds are canceled automatically private int portalbuffersize=32*1024; // Approximate buffer per portal private int reconnected; // Number of times the connection was reset private string host, database, user, pass; private int port; private mapping(string:string) sessiondefaults=([]); // runtime parameters private Thread.Mutex querymutex; private Thread.Mutex stealmutex; protected string _sprintf(int type, void|mapping flags) { string res=UNDEFINED; switch(type) { case 'O': res=sprintf(DRIVERNAME"://%s@%s:%d/%s pid:%d %s reconnected:%d\n" "mstate: %O qstate: %O pstmtcount: %d pportalcount: %d\n" "Last query: %O\n" "Last message: %s\n" "Last error: %O\n" "portal %d %O\n%O\n", user,host,port,database,backendpid,status_commit(),reconnected, mstate,qstate,pstmtcount,pportalcount, _portal&&_portal->query||"", lastmessage||"", msgresponse, !!_portal,runtimeparameter,prepareds); break; } return res; } #define BOOLOID 16 #define BYTEAOID 17 #define CHAROID 18 #define INT8OID 20 #define INT2OID 21 #define INT4OID 23 #define TEXTOID 25 #define OIDOID 26 #define XMLOID 142 #define FLOAT4OID 700 #define MACADDROID 829 #define INETOID 869 #define BPCHAROID 1042 #define VARCHAROID 1043 #define CTIDOID 1247 #define UUIDOID 2950 #define PG_PROTOCOL(m,n) (((m)<<16)|(n)) #define FLUSH "H\0\0\0\4" //! @decl void create() //! @decl void create(string host, void|string database, void|string user,@ //! void|string password, void|mapping(string:mixed) options) //! //! With no arguments, this function initializes (reinitializes if a //! connection had been previously set up) a connection to the //! PostgreSQL backend. Since PostgreSQL requires a database to be //! selected, it will try to connect to the default database. The //! connection may fail however for a variety of reasons, in this case //! the most likely of all is because you don't have enough authority //! to connect to that database. So use of this particular syntax is //! discouraged. //! //! The host argument can have the syntax @expr{"hostname"@} or //! @expr{"hostname:portname"@}. This allows to specify the TCP/IP //! port to connect to. If it is @expr{0@} or @expr{""@}, it will try //! to connect to localhost, default port. //! //! The database argument specifies the database to connect to. If //! @expr{0@} or @expr{""@}, it will try to connect to the specified //! database. //! //! @note //! You need to have a database selected before using the sql-object, //! otherwise you'll get exceptions when you try to query it. Also //! notice that this function @b{can@} raise exceptions if the db //! server doesn't respond, if the database doesn't exist or is not //! accessible by you. //! //! @seealso //! @[Postgres.postgres], @[Sql.Sql], @[postgres->select_db] protected void create(void|string _host, void|string _database, void|string _user, void|string _pass, void|mapping(string:mixed) _options) { pass = _pass; _pass = "CENSORED"; user = _user; database = _database; host = _host || PGSQL_DEFAULT_HOST; options = _options; if(search(host,":")>=0 && sscanf(_host,"%s:%d",host,port)!=2) ERROR("Error in parsing the hostname argument\n"); if(!port) port = PGSQL_DEFAULT_PORT; querymutex=Thread.Mutex(); stealmutex=Thread.Mutex(); reconnect(); } //! @decl string error() //! //! This function returns the textual description of the last //! server-related error. Returns @expr{0@} if no error has occurred //! yet. It is not cleared upon reading (can be invoked multiple //! times, will return the same result until a new error occurs). //! //! To clear the error, pass 1 as argument. //! //! @seealso //! big_query string error(void|int clear) { string s=lastmessage; if(clear) lastmessage=UNDEFINED; return s; } //! @decl string host_info() //! //! This function returns a string describing what host are we talking to, //! and how (TCP/IP or UNIX sockets). string host_info() { return sprintf("Via fd:%d over TCP/IP to %s:%d",conn->query_fd(),host,port); } #define SENDCMD(x ...) conn.sendcmd(x) #define GETBYTE() conn.getbyte() #define GETSTRING(x) conn.getstring(x) #define GETINT16() conn.getint16() #define GETINT32() conn.getint32() #define FLUSHED conn.flushed #ifdef USEPGsql #define PEEK(x) conn.bpeek(x) #else #define PEEK(x) conn.peek(x) #endif #define plugstring(x) (sprintf x) #define plugbyte(x) sprintf("%c",x) inline final private string plugint16(int x) { return sprintf("%c%c",x>>8&255,x&255); } inline final private string plugint32(int x) { return sprintf("%c%c%c%c",x>>24&255,x>>16&255,x>>8&255,x&255); } inline final private string plugint64(int x) { return sprintf("%c%c%c%c%c%c%c%c", x>>56&255,x>>48&255,x>>40&255,x>>32&255,x>>24&255,x>>16&255,x>>8&255,x&255); } class PGassist { #ifdef UNBUFFEREDIO inherit Stdio.File:std; #else inherit Stdio.FILE:std; #endif #ifdef USEPGsql inherit _PGsql.PGsql:pg; #else int flushed; #endif void create(object pgsqlsess) { std::create(); #ifdef USEPGsql pg::setpgsqlsess(pgsqlsess); #else flushed=-1; #endif } int connect(string host,int port) { int res=std::connect(host,port); #ifdef USEPGsql if(res) pg::create(std::query_fd()); #endif return res; } #ifndef USEPGsql inline final int getbyte() { if(!FLUSHED && !PEEK(0)) sendflush(); #ifdef UNBUFFEREDIO return read(1)[0]; #else return getchar(); #endif } final string getstring(void|int len) { if(!zero_type(len)) { string acc="",res; do { if(!FLUSHED && !PEEK(0)) sendflush(); res=conn.read(len,!FLUSHED); if(res) { if(!sizeof(res)) return acc; acc+=res; } } while(sizeof(acc)<len&&res); return sizeof(acc)?acc:res; } array(int) acc=({}); int c; while((c=GETBYTE())>0) acc+=({c}); return `+("",@map(acc,String.int2char)); } inline final int getint16() { int s0=GETBYTE(); int r=(s0&0x7f)<<8|GETBYTE(); return s0&0x80 ? r-(1<<15) : r ; } inline final int getint32() { int r=GETINT16(); r=r<<8|GETBYTE(); return r<<8|GETBYTE(); } inline final int getint64() { int r=GETINT32(); return r<<32|GETINT32()&0xffffffff; } #endif final protected void sendflush() { sendcmd(({}),1); } final int sendcmd(string|array(string) data,void|int flush) { if(flush) { if(stringp(data)) data=({data,FLUSH}); else data+=({FLUSH}); PD("Flush\n"); FLUSHED=1; } else if(FLUSHED!=-1) FLUSHED=0; return write(data); } } final private object getsocket() { object lcon = PGassist(this); if(!lcon.connect(host,port)) return UNDEFINED; #if constant(SSL.sslfile) #if 0 SSL.context context = SSL.context(); #if 1 context->preferred_suites = ({ SSL_rsa_with_idea_cbc_sha, SSL_rsa_with_rc4_128_sha, SSL_rsa_with_rc4_128_md5, SSL_rsa_with_3des_ede_cbc_sha, SSL_rsa_export_with_rc4_40_md5, SSL_rsa_export_with_rc2_cbc_40_md5, SSL_rsa_export_with_des40_cbc_sha, }); #endif context->random = Crypto.Random.random_string; object read_callback=con->query_read_callback(); object write_callback=con->query_write_callback(); object close_callback=con->query_close_callback(); ssl = SSL.sslfile(con, context, 1,blocking); if(!blocking) { ssl->set_read_callback(read_callback); ssl->set_write_callback(write_callback); ssl->set_close_callback(close_callback); } con=ssl; #endif #endif return lcon; } //! Cancels the currently running query. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. void cancelquery() { if(qstate==inquery) { qstate=cancelpending; object lcon; PD("CancelRequest\n"); if(!(lcon=getsocket())) ERROR("Cancel connect failed\n"); lcon.write(({plugint32(16),plugint32(PG_PROTOCOL(1234,4567)), plugint32(backendpid),cancelsecret})); lcon.close(); } } //! Returns the old cachedepth, sets the new cachedepth for prepared //! statements automatic caching. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. int setcachedepth(void|int newdepth) { int olddepth=cachedepth; if(!zero_type(newdepth) && newdepth>=0) cachedepth=newdepth; return olddepth; } //! Returns the old timeout, sets the new timeout for long running //! queries. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. int settimeout(void|int newtimeout) { int oldtimeout=timeout; if(!zero_type(newtimeout) && newtimeout>0) timeout=newtimeout; return oldtimeout; } //! Returns the old portalbuffersize, sets the new portalbuffersize //! for buffering partially concurrent queries. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. int setportalbuffersize(void|int newportalbuffersize) { int oldportalbuffersize=portalbuffersize; if(!zero_type(newportalbuffersize) && newportalbuffersize>0) portalbuffersize=newportalbuffersize; return oldportalbuffersize; } //! Returns the old fetchlimit, sets the new fetchlimit to interleave //! queries. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. int setfetchlimit(void|int newfetchlimit) { int oldfetchlimit=_fetchlimit; if(!zero_type(newfetchlimit) && newfetchlimit>=0) _fetchlimit=newfetchlimit; return oldfetchlimit; } final private string glob2reg(string glob) { if (!glob||!sizeof(glob)) return "%"; return replace(glob,({"*","?","\\","%","_"}),({"%","_","\\\\","\\%","\\_"})); } final private string addnlifpresent(void|string msg) { return msg?msg+"\n":""; } final private string pinpointerror(void|string query,void|string offset) { if(!query) return ""; int k=(int)offset; if(k<=0) return MARKSTART+query+MARKEND; return MARKSTART+(k>1?query[..k-2]:"")+MARKERROR+query[k-1..]+MARKEND; } final int _decodemsg(void|state waitforstate) { #ifdef DEBUG { array line; #ifdef DEBUGMORE line=backtrace(); #endif PD("Waiting for state %O %O\n",waitforstate,line&&line[sizeof(line)-2]); } #endif while(mstate!=waitforstate) { if(mstate!=unauthenticated) { if(qstate==cancelpending) qstate=canceled,sendclose(); if(FLUSHED && qstate==inquery && !PEEK(0)) { int tcurr=time(); int told=tcurr+timeout; while(!PEEK(told-tcurr)) if((tcurr=time())-told>=timeout) { sendclose();cancelquery(); break; } } } int msgtype=GETBYTE(); int msglen=GETINT32(); enum errortype { noerror=0, protocolerror, protocolunsupported }; errortype errtype=noerror; switch(msgtype) { void getcols() { int bintext=GETBYTE(); array a; int cols=GETINT16(); msglen-=4+1+2+2*cols; foreach(a=allocate(cols,([]));;mapping m) m->type=GETINT16(); if(_portal) { a=({(["type":bintext?BYTEAOID:TEXTOID,"name":"line"])}); _portal->_datarowdesc=a; } mstate=gotrowdescription; }; array(string) getstrings() { string s; if(msglen<1) errtype=protocolerror; s=GETSTRING(msglen); if(s[--msglen]) errtype=protocolerror; if(!msglen) return ({}); s=s[..msglen-1];msglen=0; return s/"\0"; }; void getresponse() { msglen-=4; msgresponse=([]); foreach(getstrings();;string f) if(sizeof(f)) msgresponse[f[..0]]=f[1..]; PD("%O\n",msgresponse); }; case 'R':PD("Authentication\n"); { string sendpass; int authtype; msglen-=4+4; switch(authtype=GETINT32()) { case 0:PD("Ok\n"); mstate=authenticated; break; case 2:PD("KerberosV5\n"); errtype=protocolunsupported; break; case 3:PD("ClearTextPassword\n"); sendpass=pass; break; case 4:PD("CryptPassword\n"); if(msglen<2) errtype=protocolerror; sendpass=GETSTRING(msglen);msglen=0; errtype=protocolunsupported; break; case 5:PD("MD5Password\n"); if(msglen<4) errtype=protocolerror; #if constant(Crypto.MD5.hash) #define md5hex(x) String.string2hex(Crypto.MD5.hash(x)) sendpass=md5hex(pass+user); sendpass="md5"+md5hex(sendpass+GETSTRING(msglen)); #else GETSTRING(msglen); errtype=protocolunsupported; #endif msglen=0; break; case 6:PD("SCMCredential\n"); errtype=protocolunsupported; break; case 7:PD("GSS\n"); errtype=protocolunsupported; break; case 9:PD("SSPI\n"); errtype=protocolunsupported; break; case 8:PD("GSSContinue\n"); errtype=protocolunsupported; if(msglen<1) errtype=protocolerror; SSauthdata=GETSTRING(msglen);msglen=0; break; default:PD("Unknown Authentication Method %c\n",authtype); errtype=protocolunsupported; break; } switch(errtype) { case noerror: if(mstate==unauthenticated) SENDCMD(({"p",plugint32(4+sizeof(sendpass)+1), sendpass,"\0"}),1); break; default: case protocolunsupported: ERROR("Unsupported authenticationmethod %c\n",authtype); break; } break; } case 'K':PD("BackendKeyData\n"); msglen-=4+4;backendpid=GETINT32();cancelsecret=GETSTRING(msglen); msglen=0; break; case 'S':PD("ParameterStatus\n"); msglen-=4; { array(string) ts=getstrings(); if(sizeof(ts)==2) { runtimeparameter[ts[0]]=ts[1]; PD("%s=%s\n",ts[0],ts[1]); } else errtype=protocolerror; } break; case 'Z':PD("ReadyForQuery\n"); msglen-=4+1; backendstatus=GETBYTE(); mstate=readyforquery; qstate=queryidle; _closesent=0; break; case '1':PD("ParseComplete\n"); msglen-=4; mstate=parsecomplete; break; case 't': PD("ParameterDescription (for %s)\n", _portal?_portal->_portalname:"DISCARDED"); { array a; int cols=GETINT16(); msglen-=4+2+4*cols; foreach(a=allocate(cols);int i;) a[i]=GETINT32(); #ifdef DEBUGMORE PD("%O\n",a); #endif if(_portal) _portal->_datatypeoid=a; mstate=gotparameterdescription; break; } case 'T': PD("RowDescription (for %s)\n", _portal?_portal->_portalname:"DISCARDED"); msglen-=4+2; { array a; foreach(a=allocate(GETINT16());int i;) { string s; msglen-=sizeof(s=GETSTRING())+1; mapping(string:mixed) res=(["name":s]); msglen-=4+2+4+2+4+2; res->tableoid=GETINT32()||UNDEFINED; res->tablecolattr=GETINT16()||UNDEFINED; res->type=GETINT32(); { int len=GETINT16(); res->length=len>=0?len:"variable"; } res->atttypmod=GETINT32();res->formatcode=GETINT16(); a[i]=res; } #ifdef DEBUGMORE PD("%O\n",a); #endif if(_portal) _portal->_datarowdesc=a; mstate=gotrowdescription; break; } case 'n':PD("NoData\n"); msglen-=4; _portal->_datarowdesc=({}); mstate=gotrowdescription; break; case '2':PD("BindComplete\n"); msglen-=4; mstate=bindcomplete; break; case 'D':PD("DataRow\n"); msglen-=4; if(_portal) { #ifdef USEPGsql conn.decodedatarow(msglen,_portal);msglen=0; #else array a, datarowdesc; _portal->_bytesreceived+=msglen; datarowdesc=_portal->_datarowdesc; int cols=GETINT16(); a=allocate(cols,UNDEFINED); msglen-=2+4*cols; foreach(a;int i;) { int collen=GETINT32(); if(collen>0) { msglen-=collen; mixed value; switch(datarowdesc[i]->type) { default:value=GETSTRING(collen); break; case CHAROID: case BOOLOID:value=GETBYTE(); break; case INT8OID:value=conn.getint64(); break; case FLOAT4OID:value=(float)GETSTRING(collen); break; case INT2OID:value=GETINT16(); break; case OIDOID: case INT4OID:value=GETINT32(); } a[i]=value; } else if(!collen) a[i]=""; } a=({a}); _portal->_datarows+=a; _portal->_inflight-=sizeof(a); #endif } else GETSTRING(msglen),msglen=0; mstate=dataready; break; case 's':PD("PortalSuspended\n"); msglen-=4; mstate=portalsuspended; break; case 'C':PD("CommandComplete\n"); { msglen-=4; if(msglen<1) errtype=protocolerror; string s=GETSTRING(msglen-1); if(_portal) _portal->_statuscmdcomplete=s; PD("%s\n",s); if(GETBYTE()) errtype=protocolerror; msglen=0; mstate=commandcomplete; break; } case 'I':PD("EmptyQueryResponse\n"); msglen-=4; mstate=commandcomplete; break; case '3':PD("CloseComplete\n"); msglen-=4; _closesent=0; break; case 'd':PD("CopyData\n"); msglen-=4; if(msglen<0) errtype=protocolerror; if(_portal) { _portal->_bytesreceived+=msglen; _portal->_datarows+=({({GETSTRING(msglen)})}); } msglen=0; mstate=dataready; break; case 'H':PD("CopyOutResponse\n"); getcols(); if(_portal) _portal->_fetchlimit=0; // disables further Executes break; case 'G':PD("CopyInResponse\n"); getcols(); mstate=copyinresponse; break; case 'c':PD("CopyDone\n"); msglen-=4; break; case 'E':PD("ErrorResponse\n"); getresponse(); switch(msgresponse->C) { case "P0001": lastmessage=sprintf("%s: %s",msgresponse->S,msgresponse->M); ERROR(lastmessage +"\n"+pinpointerror(_portal->query,msgresponse->P)); break; default: lastmessage=sprintf("%s %s:%s %s\n (%s:%s:%s)\n%s%s%s%s\n%s", msgresponse->S,msgresponse->C,msgresponse->P||"",msgresponse->M, msgresponse->F||"",msgresponse->R||"",msgresponse->L||"", addnlifpresent(msgresponse->D),addnlifpresent(msgresponse->H), pinpointerror(_portal&&_portal->query,msgresponse->P), pinpointerror(msgresponse->q,msgresponse->p), addnlifpresent(msgresponse->W)); switch(msgresponse->S) { case "PANIC":werror(lastmessage); } ERROR(lastmessage); } break; case 'N':PD("NoticeResponse\n"); getresponse(); lastmessage=sprintf("%s %s: %s", msgresponse->S,msgresponse->C,msgresponse->M); break; case 'A':PD("NotificationResponse\n"); { msglen-=4+4; int pid=GETINT32(); string condition,extrainfo=UNDEFINED; { array(string) ts=getstrings(); switch(sizeof(ts)) { case 0:errtype=protocolerror; break; default:errtype=protocolerror; case 2:extrainfo=ts[1]; case 1:condition=ts[0]; } } PD("%d %s\n%s\n",pid,condition,extrainfo); array cb; if((cb=notifylist[condition]||notifylist[""]) && (pid!=backendpid || sizeof(cb)>1 && cb[1])) cb[0](pid,condition,extrainfo,@cb[2..]); break; } default:PD("Unknown message received %c\n",msgtype); msglen-=4;PD("%O\n",GETSTRING(msglen));msglen=0; errtype=protocolunsupported; break; } if(msglen) errtype=protocolerror; switch(errtype) { case protocolunsupported: ERROR("Unsupported servermessage received %c\n",msgtype); break; case protocolerror: reconnect(1); ERROR("Protocol error with databasel %s@%s:%d/%s\n", user,host,port,database); break; case noerror: break; } if(zero_type(waitforstate)) break; } PD("Found state %O\n",mstate); return mstate; } #ifndef UNBUFFEREDIO private int read_cb(mixed foo, string d) { conn.unread(d); do _decodemsg(); while(PEEK(0)==1); return 0; } #endif final private void sendterminate() { PD("Terminate\n"); SENDCMD(({"X",plugint32(4)})); conn.close(); } void destroy() { sendterminate(); } private void reconnect(void|int force) { if(conn) { reconnected++; #ifdef DEBUG ERROR("While debugging, reconnects are forbidden\n"); exit(1); #endif if(!force) sendterminate(); foreach(prepareds;;mapping tprepared) m_delete(tprepared,"preparedname"); } if(!(conn=getsocket())) ERROR("Couldn't connect to database on %s:%d\n",host,port); _closesent=0; mstate=unauthenticated; qstate=queryidle; runtimeparameter=([]); array(string) plugbuf=({"",plugint32(PG_PROTOCOL(3,0))}); if(user) plugbuf+=({"user\0",user,"\0"}); if(database) plugbuf+=({"database\0",database,"\0"}); foreach(sessiondefaults;string name;string value) plugbuf+=({name,"\0",value,"\0"}); plugbuf+=({"\0"}); int len=4; foreach(plugbuf;;string s) len+=sizeof(s); plugbuf[0]=plugint32(len); SENDCMD(plugbuf); PD("%O\n",plugbuf); _decodemsg(readyforquery); PD("%O\n",runtimeparameter); } //! @decl void reload() //! //! Resets the connection to the database. Can be used for //! a variety of reasons, for example to detect the status of a connection. void reload(void|int special) { mixed err; int didsync; if(err = catch { sendclose(); PD("Portalsinflight: %d\n",portalsinflight); if(!portalsinflight) { PD("Sync\n"); SENDCMD(({"S",plugint32(4)})); didsync=1; if(!special) { _decodemsg(readyforquery); foreach(prepareds;;mapping tprepared) { m_delete(tprepared,"datatypeoid"); m_delete(tprepared,"datarowdesc"); } } } }) { PD("%O\n",err); reconnect(1); } else if(didsync && special==2) _decodemsg(readyforquery); #ifndef UNBUFFEREDIO conn.set_read_callback(read_cb); #endif } //! @decl void select_db(string dbname) //! //! This function allows you to connect to a database. Due to //! restrictions of the Postgres frontend-backend protocol, you always //! have to be connected to a database, so in fact this function just //! allows you to connect to a different database on the same server. //! //! @note //! This function @b{can@} raise exceptions if something goes wrong //! (backend process not running, not enough permissions..) //! //! @seealso //! create void select_db(string dbname) { database=dbname; reconnect(); } //! With PostgreSQL you can LISTEN to NOTIFY events. //! This function allows you to detect and handle such events. //! //! @param condition //! Name of the notification event we're listening //! to. A special case is the empty string, which matches all events, //! and can be used as fallback function which is called only when the //! specific condition is not handled.. //! //! @param notify_cb //! Function to be called on receiving a notification-event of //! condition @[condition]. //! The callback function is invoked with //! @expr{void notify_cb(pid,condition,extrainfo, .. args);@} //! @[pid] is the process id of the database session that originated //! the event. @[condition] contains the current condition. //! @[extrainfo] contains optional extra information specified by //! the database. //! The rest of the arguments to @[notify_cb] are passed //! verbatim from @[args]. //! The callback function must return no value. //! //! @param selfnotify //! Normally notify events generated by your own session are ignored. //! If you want to receive those as well, set @[selfnotify] to one. //! //! @param args //! Extra arguments to pass to @[notify_cb]. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. void set_notify_callback(string condition, void|function(int,string,string,mixed ...:void) notify_cb,void|int selfnotify, mixed ... args) { if(!notify_cb) m_delete(notifylist,condition); else { array old=notifylist[condition]; if(!old) old=({notify_cb}); if(selfnotify||args) old+=({selfnotify}); if(args) old+=args; notifylist[condition]=old; } } //! This function quotes magic characters inside strings embedded in a //! textual query. Quoting must not be done for parameters passed in //! bindings. //! //! @seealso //! big_query string quote(string s) { string r=runtimeparameter->standard_conforming_strings; if(r && r=="on") return replace(s, "'", "''"); return replace(s, ({ "'", "\\" }), ({ "''", "\\\\" }) ); } //! This function creates a new database with the given name (assuming we //! have enough permissions to do this). //! //! @seealso //! drop_db void create_db(string db) { big_query("CREATE DATABASE :db",([":db":db])); } //! This function destroys a database and all the data it contains (assuming //! we have enough permissions to do so). //! //! @seealso //! create_db void drop_db(string db) { big_query("DROP DATABASE :db",([":db":db])); } //! This function returns a string describing the server we are //! talking to. It has the form @expr{"servername/serverversion"@} //! (like the HTTP protocol description) and is most useful in //! conjunction with the generic SQL-server module. string server_info () { return DRIVERNAME"/"+(runtimeparameter->server_version||"unknown"); } //! Lists all the databases available on the server. //! If glob is specified, lists only those databases matching it. array(string) list_dbs (void|string glob) { array row,ret=({}); object res=big_query("SELECT d.datname " "FROM pg_database d " "WHERE d.datname ILIKE :glob " "ORDER BY d.datname", ([":glob":glob2reg(glob)])); while(row=res->fetch_row()) ret+=({row[0]}); return ret; } //! Returns an array containing the names of all the tables and views in the //! path in the currently selected database. //! If a glob is specified, it will return only those tables with matching //! names. array(string) list_tables (void|string glob) { array row,ret=({}); // This query might not work on PostgreSQL 7.4 object res=big_query( // due to missing schemasupport "SELECT CASE WHEN 'public'=n.nspname THEN '' ELSE n.nspname||'.' END " " ||c.relname AS name " "FROM pg_catalog.pg_class c " " LEFT JOIN pg_catalog.pg_namespace n ON n.oid=c.relnamespace " "WHERE c.relkind IN ('r','v') AND n.nspname<>'pg_catalog' " " AND n.nspname !~ '^pg_toast' AND pg_catalog.pg_table_is_visible(c.oid) " " AND c.relname ILIKE :glob " " ORDER BY 1", ([":glob":glob2reg(glob)])); while(row=res->fetch_row()) ret+=({row[0]}); return ret; } //! Returns a mapping, indexed on the column name, of mappings describing //! the attributes of a table of the current database. //! If a glob is specified, will return descriptions only of the columns //! matching it. //! //! The currently defined fields are: //! //! @mapping //! @member int "is_shared" //! //! @member string "owner" //! Tableowner //! //! @member string "length" //! Size of the columndatatype //! //! @member string "text" //! A textual description of the internal (to the server) type-name //! //! @member mixed "default" //! Default value for the column //! //! @member mixed "schema" //! Schema the table belongs to //! //! @member mixed "table" //! Name of the table //! //! @member mixed "kind" //! Type of table //! //! @member mixed "has_index" //! If the table has any indices //! //! @member mixed "has_primarykey" //! If the table has a primary key //! //! @member mixed "rowcount" //! Estimated rowcount of the table //! //! @member mixed "pagecount" //! Estimated pagecount of the table //! //! @endmapping //! //! Setting wild to * will include system columns in the list. //! array(mapping(string:mixed)) list_fields(void|string table, void|string wild) { array row, ret=({}); string schema=UNDEFINED; sscanf(table||"*", "%s.%s", schema, table); object res = big_query( "SELECT a.attname, a.atttypid, t.typname, a.attlen, " " c.relhasindex, c.relhaspkey, c.reltuples, c.relpages, " " c.relisshared, t.typdefault, " " n.nspname, c.relname, " " CASE c.relkind " " WHEN 'r' THEN 'table' " " WHEN 'v' THEN 'view' " " WHEN 'i' THEN 'index' " " WHEN 'S' THEN 'sequence' " " WHEN 's' THEN 'special' " " WHEN 't' THEN 'toastable' " // pun intended :-) " WHEN 'c' THEN 'composite' " " ELSE c.relkind::TEXT END AS relkind, " " r.rolname " "FROM pg_catalog.pg_class c " " LEFT JOIN pg_catalog.pg_namespace n ON n.oid=c.relnamespace " " JOIN pg_catalog.pg_roles r ON r.oid=c.relowner " " JOIN pg_catalog.pg_attribute a ON c.oid=a.attrelid " " JOIN pg_catalog.pg_type t ON a.atttypid=t.oid " "WHERE c.relname ILIKE :table AND " " (n.nspname ILIKE :schema OR " " :schema IS NULL " " AND n.nspname<>'pg_catalog' AND n.nspname !~ '^pg_toast') " " AND a.attname ILIKE :wild " " AND (a.attnum>0 OR '*'=:realwild) " "ORDER BY n.nspname,c.relname,a.attnum,a.attname", ([":schema":glob2reg(schema),":table":glob2reg(table), ":wild":glob2reg(wild),":realwild":wild])); array colnames=res->fetch_fields(); { mapping(string:string) renames=([ "attname":"name", "nspname":"schema", "relname":"table", "rolname":"owner", "typname":"type", "attlen":"length", "typdefault":"default", "relisshared":"is_shared", "atttypid":"typeoid", "relkind":"kind", "relhasindex":"has_index", "relhaspkey":"has_primarykey", "reltuples":"rowcount", "relpages":"pagecount", ]); foreach(colnames;int i;mapping m) { string nf,field=m->name; if(nf=renames[field]) field=nf; colnames[i]=field; } } #define delifzero(m,field) if(!(m)[field]) m_delete(m,field) while(row=res->fetch_row()) { mapping m=mkmapping(colnames,row); delifzero(m,"is_shared"); delifzero(m,"has_index"); delifzero(m,"has_primarykey"); delifzero(m,"default"); ret+=({m}); } return ret; } private int oidformat(int oid) { switch(oid) { case BOOLOID: case BYTEAOID: case CHAROID: case INT8OID: case INT2OID: case INT4OID: case TEXTOID: case OIDOID: case XMLOID: case MACADDROID: case INETOID: case BPCHAROID: case VARCHAROID: case CTIDOID: case UUIDOID: return 1; //binary } return 0; // text } final void _sendexecute(int fetchlimit) { string portalname=_portal->_portalname; PD("Execute portal %s fetchlimit %d\n",portalname,fetchlimit); SENDCMD(({"E",plugint32(4+sizeof(portalname)+1+4),portalname, "\0",plugint32(fetchlimit)}),1); _portal->_inflight+=fetchlimit; } final private void sendclose() { string portalname; portalsinflight--; if(_portal && (portalname=_portal->_portalname)) { _portal->_portalname = UNDEFINED; _portal = UNDEFINED; #ifdef DEBUGMORE PD("Closetrace %O\n",backtrace()); #endif if(!sizeof(portalname)) unnamedportalinuse--; PD("Close portal %s\n",portalname); SENDCMD(({"C",plugint32(4+1+sizeof(portalname)+1), "P",portalname,"\0"}),1); _closesent=1; } } final private string trbackendst(int c) { switch(c) { case 'I':return "idle"; case 'T':return "intransaction"; case 'E':return "infailedtransaction"; } return "unknown"; } //! Returns the current commitstatus of the connection. Returns either one of: //! unknown //! idle //! intransaction //! infailedtransaction //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. final string status_commit() { return trbackendst(backendstatus); } //! This is the only provided interface which allows you to query the //! database. If you wish to use the simpler "query" function, you need to //! use the @[Sql.Sql] generic SQL-object. //! //! It returns a pgsql_result object (which conforms to the //! @[Sql.sql_result] standard interface for accessing data). I //! recommend using @[query()] for simpler queries (because it is //! easier to handle, but stores all the result in memory), and //! @[big_query()] for queries you expect to return huge amounts of //! data (it's harder to handle, but fetches results on demand). //! //! @note //! This function @b{can@} raise exceptions. //! //! @seealso //! @[Sql.Sql], @[Sql.sql_result] object big_query(string q,void|mapping(string|int:mixed) bindings) { string preparedname=""; string portalname=""; if(stringp(q) && String.width(q)>8) q=string_to_utf8(q); array(string|int) paramValues; if(bindings) { int pi=0,rep=0; paramValues=allocate(sizeof(bindings)); array(string) from=allocate(sizeof(bindings)); array(string) to=allocate(sizeof(bindings)); foreach(bindings; mixed name; mixed value) { // Throws if mapping key is empty string. if(stringp(name)) { if(name[0]!=':') name=":"+name; if(name[1]=='_') { // Special parameter continue; } } from[rep]=name; string rval; if(multisetp(value)) { rval=sizeof(value) ? indices(value)[0] : ""; } else { if(zero_type(value)) paramValues[pi++]=UNDEFINED; // NULL else { if(stringp(value) && String.width(value)>8) value=string_to_utf8(value); paramValues[pi++]=value; } rval="$"+(string)pi; } to[rep++]=rval; } if(rep--) q=replace(q,from[..rep],to[..rep]); paramValues= pi ? paramValues[..pi-1] : ({}); } else paramValues = ({}); int tstart; mapping(string:mixed) tprepared; if(sizeof(q)>=MINPREPARELENGTH) { if(tprepared=prepareds[q]) { if(tprepared->preparedname) preparedname=tprepared->preparedname; else if((tstart=tprepared->trun) && tprepared->tparse*FACTORPLAN>=tstart) preparedname=PREPSTMTPREFIX+(string)pstmtcount++; } else { if(totalhits>=cachedepth) { array(string) plugbuf=({}); foreach(prepareds;string ind;tprepared) { int oldhits=tprepared->hits; totalhits-=oldhits-(tprepared->hits=oldhits>>1); if(oldhits<=1) { string oldprep=tprepared->preparedname; if(oldprep) { PD("Close statement %s\n",oldprep); plugbuf+=({"C",plugint32(4+1+sizeof(oldprep)+1), "S",oldprep,"\0"}); } m_delete(prepareds,ind); } } if(sizeof(plugbuf)) SENDCMD(plugbuf,1); // close expireds PD("%O\n",plugbuf); } prepareds[q]=tprepared=([]); } tstart=gethrtime(); } // pgsql_result autoassigns to portal pgsql_result(this,tprepared,q,_fetchlimit,portalbuffersize); if(unnamedportalinuse) portalname=PORTALPREFIX+(string)pportalcount++; else unnamedportalinuse++; _portal->_portalname=portalname; qstate=inquery; portalsinflight++; mixed err; if(err = catch { if(!sizeof(preparedname) || !tprepared || !tprepared->preparedname) { PD("Parse statement %s\n",preparedname); // Even though the protocol doesn't require the Parse command to be // followed by a flush, it makes a VERY noticeable difference in // performance if it is omitted; seems like a flaw in the PostgreSQL // server SENDCMD(({"P",plugint32(4+sizeof(preparedname)+1+sizeof(q)+1+2), preparedname,"\0",q,"\0",plugint16(0)}),1); PD("Query: %O\n",q); } // sends Parameter- and RowDescription for 'S' conn.set_read_callback(0); if(!tprepared || !tprepared->datatypeoid) { PD("Describe statement %s\n",preparedname); SENDCMD(({"D",plugint32(4+1+sizeof(preparedname)+1), "S",preparedname,"\0"}),1); } else { _portal->_datatypeoid=tprepared->datatypeoid; _portal->_datarowdesc=tprepared->datarowdesc; } { array(string) plugbuf=({"B",UNDEFINED}); int len=4+sizeof(portalname)+1+sizeof(preparedname)+1 +2+sizeof(paramValues)*(2+4)+2+2; plugbuf+=({portalname,"\0",preparedname,"\0", plugint16(sizeof(paramValues))}); if(!tprepared || !tprepared->datatypeoid) { _decodemsg(gotparameterdescription); if(tprepared) tprepared->datatypeoid=_portal->_datatypeoid; } array dtoid=_portal->_datatypeoid; foreach(dtoid;;int textbin) plugbuf+=({plugint16(oidformat(textbin))}); plugbuf+=({plugint16(sizeof(paramValues))}); foreach(paramValues;int i;mixed value) { if(zero_type(value)) plugbuf+=({plugint32(-1)}); // NULL else switch(dtoid[i]) { default: { int k; len+=k=sizeof(value=(string)value); plugbuf+=({plugint32(k),value}); break; } case BOOLOID:plugbuf+=({plugint32(1)});len++; switch(stringp(value)?value[0]:value) { case 'o':case 'O': plugbyte(stringp(value)&&sizeof(value)>1 &&(value[1]=='n'||value[1]=='N')); break; case 0:case 'f':case 'F':case 'n':case 'N': plugbuf+=({plugbyte(0)}); break; default: plugbuf+=({plugbyte(1)}); break; } break; case CHAROID:plugbuf+=({plugint32(1)});len++; if(intp(value)) plugbuf+=({plugbyte(value)}); else { value=(string)value; if(sizeof(value)!=1) ERROR("\"char\" types must be 1 byte wide, got %d\n", sizeof(value)); plugbuf+=({value}); } break; case INT8OID:len+=8; plugbuf+=({plugint32(8),plugint64((int)value)}); break; case INT4OID:len+=4; plugbuf+=({plugint32(4),plugint32((int)value)}); break; case INT2OID:len+=2; plugbuf+=({plugint32(2),plugint16((int)value)}); break; } } if(!tprepared || !tprepared->datarowdesc) { _decodemsg(gotrowdescription); if(tprepared) tprepared->datarowdesc=_portal->_datarowdesc; } { array a;int i; len+=(i=sizeof(a=_portal->_datarowdesc))*2; plugbuf+=({plugint16(i)}); foreach(a;;mapping col) plugbuf+=({plugint16(oidformat(col->type))}); } plugbuf[1]=plugint32(len); PD("Bind portal %s statement %s\n",portalname,preparedname); SENDCMD(plugbuf); #ifdef DEBUGMORE PD("%O\n",plugbuf); #endif } _portal->_statuscmdcomplete=UNDEFINED; _sendexecute(_fetchlimit && FETCHLIMITLONGRUN); if(tprepared) { _decodemsg(bindcomplete); int tend=gethrtime(); if(tend==tstart) m_delete(prepareds,q); else { tprepared->hit++; totalhits++; if(!tprepared->preparedname) { if(sizeof(preparedname)) tprepared->preparedname=preparedname; tstart=tend-tstart; if(tprepared->tparse>tstart) tprepared->tparse=tstart; else tstart=tprepared->tparse; } tprepared->trunstart=tend; } } }) { PD("%O\n",err); reload(1); backendstatus=UNDEFINED; throw(err); } { pgsql_result tportal=_portal; // Make copy, because it might dislodge tportal->fetch_row(1); // upon initial fetch_row() return tportal; } } //! This is an alias for @[big_query()], since @[big_query()] already supports //! streaming of multiple simultaneous queries through the same connection. //! //! @seealso //! @[big_query], @[Sql.Sql], @[Sql.sql_result] object streaming_query(string q,void|mapping(string|int:mixed) bindings) { return big_query(q,bindings); } class pgsql_result { object _pgsqlsess; private int numrows; private int eoffound; private mixed delayederror; private int copyinprogress; int _fetchlimit; private mapping tprepared; #ifdef NO_LOCKING int _qmtxkey; #else Thread.MutexKey _qmtxkey; #endif string query; string _portalname; int _bytesreceived; int _rowsreceived; int _interruptable; int _inflight; int _portalbuffersize; string _statuscmdcomplete; array(array(mixed)) _datarows; array(mapping(string:mixed)) _datarowdesc; array(int) _datatypeoid; #ifdef USEPGsql int _buffer; #endif private object fetchmutex;; protected string _sprintf(int type, void|mapping flags) { string res=UNDEFINED; switch(type) { case 'O': res=sprintf(DRIVERNAME"_result numrows: %d eof: %d querylock: %d" " inflight: %d portalname: %O\n" "query: %O\n" "laststatus: %s\n" "%O\n" "%O\n", numrows,eoffound,!!_qmtxkey,_inflight,_portalname, query, _statuscmdcomplete||"", _datarowdesc, _pgsqlsess); break; } return res; } void create(object pgsqlsess,mapping(string:mixed) _tprepared, string _query,int fetchlimit,int portalbuffersize) { _pgsqlsess = pgsqlsess; tprepared = _tprepared; query = _query; _datarows = ({ }); numrows = UNDEFINED; fetchmutex = Thread.Mutex(); _fetchlimit=fetchlimit; _portalbuffersize=portalbuffersize; steallock(); } //! Returns the command-complete status for this query. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. //! //! @seealso //! @[affected_rows] string status_command_complete() { return _statuscmdcomplete; } //! Returns the number of affected rows by this query. //! //! This function is PostgreSQL-specific, and thus it is not available //! through the generic SQL-interface. //! //! @seealso //! @[status_command_complete] int affected_rows() { int rows; if(_statuscmdcomplete) sscanf(_statuscmdcomplete,"%*s %d",rows); return rows; } int num_fields() { return sizeof(_portal->datarowdesc); } int num_rows() { int numrows; sscanf(_statuscmdcomplete,"%*s %d",numrows); return numrows; } int eof() { return eoffound; } array(mapping(string:mixed)) fetch_fields() { return _datarowdesc+({}); } private void releasesession() { if(_pgsqlsess) { if(copyinprogress) { PD("CopyDone\n"); _pgsqlsess.SENDCMD("c\0\0\0\4",1); } _pgsqlsess.reload(2); } _qmtxkey=UNDEFINED; _pgsqlsess=UNDEFINED; } void destroy() { catch { // inside destructors, exceptions don't work releasesession(); }; } inline private array(mixed) getdatarow() { array(mixed) datarow=_datarows[0]; _datarows=_datarows[1..]; return datarow; } private void steallock() { #ifndef NO_LOCKING PD("Going to steal oldportal %d\n",!!_pgsqlsess._portal); Thread.MutexKey stealmtxkey = stealmutex.lock(); do if(_qmtxkey = querymutex.current_locking_key()) { pgsql_result portalb; if(portalb=_pgsqlsess._portal) { _pgsqlsess._nextportal++; if(portalb->_interruptable) portalb->fetch_row(2); else { PD("Waiting for the querymutex\n"); if((_qmtxkey=querymutex.lock(2))) { if(copyinprogress) ERROR("COPY needs to be finished first\n"); ERROR("Driver bug, please report, " "conflict while interleaving SQL-operations\n"); } PD("Got the querymutex\n"); } _pgsqlsess._nextportal--; } break; } while(!(_qmtxkey=querymutex.trylock())); #else PD("Skipping lock\n"); _qmtxkey=1; #endif _pgsqlsess._portal=this; PD("Stealing successful\n"); } int|array(string|int) fetch_row(void|int|string buffer) { #ifndef NO_LOCKING Thread.MutexKey fetchmtxkey = fetchmutex.lock(); #endif if(!buffer && sizeof(_datarows)) return getdatarow(); if(copyinprogress) { fetchmtxkey = UNDEFINED; if(stringp(buffer)) { PD("CopyData\n"); _pgsqlsess.SENDCMD(({"d",plugint32(4+sizeof(buffer)),buffer})); } else releasesession(); return UNDEFINED; } mixed err; if(buffer!=2 && (err=delayederror)) { delayederror=UNDEFINED; throw(err); } err = catch { if(_portalname) { if(buffer!=2 && !_qmtxkey) { steallock(); _pgsqlsess._sendexecute(_fetchlimit); } while(_pgsqlsess._closesent) _pgsqlsess._decodemsg(); // Flush previous portal sequence for(;;) { #ifdef DEBUGMORE PD("buffer: %d nextportal: %d lock: %d\n", buffer,_pgsqlsess._nextportal,!!_qmtxkey); #endif #ifdef USEPGsql _buffer=buffer; #endif switch(_pgsqlsess._decodemsg()) { case copyinresponse: copyinprogress=1; return UNDEFINED; case dataready: if(tprepared) { tprepared->trun=gethrtime()-tprepared->trunstart; m_delete(tprepared,"trunstart"); tprepared = UNDEFINED; } mstate=dataprocessed; _rowsreceived++; switch(buffer) { case 0: case 1: if(_fetchlimit) _fetchlimit= min(_portalbuffersize/2*_rowsreceived/_bytesreceived || 1, _pgsqlsess._fetchlimit); } switch(buffer) { case 2: case 3: continue; case 1: _interruptable=1; if(_pgsqlsess._nextportal) continue; #if STREAMEXECUTES if(_fetchlimit && _inflight<=_fetchlimit-1) _pgsqlsess._sendexecute(_fetchlimit); #endif return UNDEFINED; } #if STREAMEXECUTES if(_fetchlimit && _inflight<=_fetchlimit-1) _pgsqlsess._sendexecute(_fetchlimit); // Overlap Executes #endif return getdatarow(); case commandcomplete: _inflight=0; releasesession(); switch(buffer) { case 1: case 2: return UNDEFINED; case 3: if(sizeof(_datarows)) return getdatarow(); } break; case portalsuspended: if(_inflight) continue; if(_pgsqlsess._nextportal) { switch(buffer) { case 1: case 2: _qmtxkey = UNDEFINED; return UNDEFINED; case 3: _qmtxkey = UNDEFINED; return getdatarow(); } _fetchlimit=FETCHLIMITLONGRUN; if(sizeof(_datarows)) { _qmtxkey = UNDEFINED; return getdatarow(); } buffer=3; } _pgsqlsess._sendexecute(_fetchlimit); default: continue; } break; } } eoffound=1; return UNDEFINED; }; PD("Exception %O\n",err); _pgsqlsess.reload(); if(buffer!=2) throw(err); if(!delayederror) delayederror=err; return UNDEFINED; } };

pike.git/ lib/ modules/ Sql.pmod/ pgsql.pike > 13a120dadc9bed09c7e9ce801dd89c1cd62d748c [Annotate]