X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fevent_client.h;h=9c4fd2ba143806ce50bc529f6f94e8048e4d4c38;hb=c855d497545dad80942a194624c111a54cd1fdc7;hp=4617908c578bb060b37b764ffd491bb1d4a4057e;hpb=869c309f23d4dfdf72681ae921e23b98a632a5d1;p=citadel.git diff --git a/citadel/event_client.h b/citadel/event_client.h index 4617908c5..9c4fd2ba1 100644 --- a/citadel/event_client.h +++ b/citadel/event_client.h @@ -1,89 +1,219 @@ +#ifndef __EVENT_CLIENT_H__ +#define __EVENT_CLIENT_H__ +#define EV_COMPAT3 0 +#include "sysconfig.h" #include #include #include #include #include #include +#include typedef struct AsyncIO AsyncIO; typedef enum _eNextState { + eSendDNSQuery, + eReadDNSReply, + + eDBQuery, + + eConnect, eSendReply, eSendMore, + eSendFile, + eReadMessage, + eReadMore, + eReadPayload, + eReadFile, + eTerminateConnection, eAbort }eNextState; -typedef int (*EventContextAttach)(void *Data); -typedef eNextState (*IO_CallBack)(void *Data); +typedef eNextState (*IO_CallBack)(AsyncIO *IO); typedef eReadState (*IO_LineReaderCallback)(AsyncIO *IO); typedef void (*ParseDNSAnswerCb)(AsyncIO*, unsigned char*, int); typedef void (*FreeDNSReply)(void *DNSData); -struct AsyncIO { - StrBuf *Host; - char service[32]; - /* To cycle through several possible services... */ - struct addrinfo *res; - struct addrinfo *curr_ai; +typedef struct __ReadAsyncMsg { + StrBuf *MsgBuf; + size_t maxlen; /* maximum message length */ - /* connection related */ - int IP6; - struct hostent *HEnt; - int sock; - int active_event; - eNextState NextState; + const char *terminator; /* token signalling EOT */ + long tlen; + int dodot; + + int flushing; /* if we read maxlen, read until nothing more arives and ignore this. */ + + int crlf; /* CRLF newlines instead of LF */ +} ReadAsyncMsg; + + +typedef struct _DNSQueryParts { + ParseDNSAnswerCb DNS_CB; + IO_CallBack PostDNS; + + int DNSStatus; + void *VParsedDNSReply; + FreeDNSReply DNSReplyFree; + void *Data; +} DNSQueryParts; + +typedef struct _evcurl_request_data +{ + CURL *chnd; + struct curl_slist *headers; + char errdesc[CURL_ERROR_SIZE]; + + int attached; + + char *PlainPostData; + long PlainPostDataLen; + StrBuf *PostData; + + StrBuf *ReplyData; + long httpcode; +} evcurl_request_data; + +/* DNS Related */ +typedef struct __evcares_data { ev_io recv_event, send_event; - StrBuf *ErrMsg; /* if we fail to connect, or lookup, error goes here. */ + ev_timer timeout; /* timeout while requesting ips */ +#ifdef DEBUG_CARES + short int SourcePort; +#endif + struct ares_options Options; + ares_channel Channel; + DNSQueryParts *Query; + + IO_CallBack Fail; /* the dns lookup didn't work out. */ +} evcares_data; + +struct AsyncIO { + long ID; + eNextState NextState; + /* connection related */ + ParsedURL *ConnectMe; + /* read/send related... */ StrBuf *IOBuf; IOBuffer SendBuf, RecvBuf; + FDIOBuffer IOB; /* when sending from / reading into files, this is used. */ + + /* our events... */ + ev_cleanup abort_by_shutdown, /* server wants to go down... */ + db_abort_by_shutdown; /* server wants to go down... */ + ev_timer conn_fail, /* connection establishing timed out */ + rw_timeout; /* timeout while sending data */ + ev_idle unwind_stack, /* get c-ares out of the stack */ + db_unwind_stack, /* wait for next db operation... */ + conn_fail_immediate; /* unwind stack, but fail immediately. */ + ev_io recv_event, /* receive data from the client */ + send_event, /* send more data to the client */ + conn_event; /* Connection successfully established */ + + StrBuf *ErrMsg; /* if we fail to connect, or lookup, error goes here. */ + /* Citadel application callbacks... */ IO_CallBack ReadDone, /* Theres new data to read... */ SendDone, /* we may send more data */ Terminate, /* shutting down... */ Timeout, /* Timeout handler; may also be connection timeout */ - ConnFail; /* What to do when one connection failed? */ + ConnFail, /* What to do when one connection failed? */ + ShutdownAbort,/* we're going down. make your piece. */ + NextDBOperation; /* Perform Database IO */ IO_LineReaderCallback LineReader; /* if we have linereaders, maybe we want to read more lines before the real application logic is called? */ - struct ares_options DNSOptions; - ares_channel DNSChannel; - ParseDNSAnswerCb DNS_CB; - IO_CallBack PostDNS; - int DNSStatus; - void *VParsedDNSReply; - FreeDNSReply DNSReplyFree; + evcares_data DNS; + + evcurl_request_data HttpReq; + + /* Saving / loading a message async from / to disk */ + ReadAsyncMsg *ReadMsg; + struct CtdlMessage *AsyncMsg; + struct recptypes *AsyncRcp; /* Custom data; its expected to contain AsyncIO so we can save malloc()s... */ - DeleteHashDataFunc DeleteData; /* so if we have to destroy you, what to do... */ - void *Data; /* application specific data */ + void *Data; /* application specific data */ + void *CitContext; /* Citadel Session context... */ }; typedef struct _IOAddHandler { - void *Ctx; - EventContextAttach EvAttch; + AsyncIO *IO; + IO_CallBack EvAttch; }IOAddHandler; +#define CCID ((CitContext*)IO->CitContext)->cs_pid +#define EV_syslog(LEVEL, FORMAT, ...) syslog(LEVEL, "IO[%ld]CC[%d]" FORMAT, IO->ID, CCID, __VA_ARGS__) +#define EVM_syslog(LEVEL, FORMAT) syslog(LEVEL, "IO[%ld]CC[%d]" FORMAT, IO->ID, CCID) + +#define EVNC_syslog(LEVEL, FORMAT, ...) syslog(LEVEL, "IO[%ld]" FORMAT, IO->ID, __VA_ARGS__) +#define EVNCM_syslog(LEVEL, FORMAT) syslog(LEVEL, "IO[%ld]" FORMAT, IO->ID) + void FreeAsyncIOContents(AsyncIO *IO); -int QueueEventContext(void *Ctx, AsyncIO *IO, EventContextAttach CB); -int ShutDownEventQueue(void); +eNextState NextDBOperation(AsyncIO *IO, IO_CallBack CB); +eNextState QueueDBOperation(AsyncIO *IO, IO_CallBack CB); +eNextState QueueEventContext(AsyncIO *IO, IO_CallBack CB); +eNextState QueueCurlContext(AsyncIO *IO); + +eNextState EvConnectSock(AsyncIO *IO, + double conn_timeout, + double first_rw_timeout, + int ReadFirst); +void IO_postdns_callback(struct ev_loop *loop, ev_idle *watcher, int revents); + +int QueueQuery(ns_type Type, const char *name, AsyncIO *IO, DNSQueryParts *QueryParts, IO_CallBack PostDNS); +void QueueGetHostByName(AsyncIO *IO, const char *Hostname, DNSQueryParts *QueryParts, IO_CallBack PostDNS); + +void QueryCbDone(AsyncIO *IO); + +void StopClient(AsyncIO *IO); + +void StopClientWatchers(AsyncIO *IO); + +void SetNextTimeout(AsyncIO *IO, double timeout); + +void InitC_ares_dns(AsyncIO *IO); + +#include + +#define OPT(s, v) \ + do { \ + sta = curl_easy_setopt(chnd, (CURLOPT_##s), (v)); \ + if (sta) { \ + syslog(LOG_ERR, "error setting option " #s " on curl handle: %s", curl_easy_strerror(sta)); \ + } } while (0) + +void InitIOStruct(AsyncIO *IO, + void *Data, + eNextState NextState, + IO_LineReaderCallback LineReader, + IO_CallBack DNS_Fail, + IO_CallBack SendDone, + IO_CallBack ReadDone, + IO_CallBack Terminate, + IO_CallBack ConnFail, + IO_CallBack Timeout, + IO_CallBack ShutdownAbort); + +int InitcURLIOStruct(AsyncIO *IO, + void *Data, + const char* Desc, + IO_CallBack SendDone, + IO_CallBack Terminate, + IO_CallBack ShutdownAbort); -void InitEventIO(AsyncIO *IO, - void *pData, - IO_CallBack ReadDone, - IO_CallBack SendDone, - IO_CallBack Terminate, - IO_CallBack Timeout, - IO_CallBack ConnFail, - IO_LineReaderCallback LineReader, - int ReadFirst); +eNextState ReAttachIO(AsyncIO *IO, + void *pData, + int ReadFirst); -int QueueQuery(ns_type Type, char *name, AsyncIO *IO, IO_CallBack PostDNS); +#endif /* __EVENT_CLIENT_H__ */