1 #ifndef __EVENT_CLIENT_H__
2 #define __EVENT_CLIENT_H__
6 #include <sys/socket.h>
8 #include <arpa/nameser.h>
10 #include <curl/curl.h>
12 typedef struct AsyncIO AsyncIO;
14 typedef enum _eNextState {
28 typedef eNextState (*IO_CallBack)(AsyncIO *IO);
29 typedef eReadState (*IO_LineReaderCallback)(AsyncIO *IO);
30 typedef void (*ParseDNSAnswerCb)(AsyncIO*, unsigned char*, int);
31 typedef void (*FreeDNSReply)(void *DNSData);
34 typedef struct __ReadAsyncMsg {
36 size_t maxlen; /* maximum message length */
38 const char *terminator; /* token signalling EOT */
42 int flushing; /* if we read maxlen, read until nothing more arives and ignore this. */
44 int crlf; /* CRLF newlines instead of LF */
48 typedef struct _DNSQueryParts {
49 ParseDNSAnswerCb DNS_CB;
53 void *VParsedDNSReply;
54 FreeDNSReply DNSReplyFree;
58 typedef struct _evcurl_request_data
61 struct curl_slist *headers;
62 char errdesc[CURL_ERROR_SIZE];
67 long PlainPostDataLen;
72 } evcurl_request_data;
77 /* connection related */
80 /* read/send related... */
86 ev_cleanup abort_by_shutdown, /* server wants to go down... */
87 db_abort_by_shutdown; /* server wants to go down... */
88 ev_timer conn_fail, /* connection establishing timed out */
89 rw_timeout; /* timeout while sending data */
90 ev_idle unwind_stack, /* get c-ares out of the stack */
91 db_unwind_stack, /* wait for next db operation... */
92 conn_fail_immediate; /* unwind stack, but fail immediately. */
93 ev_io recv_event, /* receive data from the client */
94 send_event, /* send more data to the client */
95 conn_event; /* Connection successfully established */
97 StrBuf *ErrMsg; /* if we fail to connect, or lookup, error goes here. */
99 /* Citadel application callbacks... */
100 IO_CallBack ReadDone, /* Theres new data to read... */
101 SendDone, /* we may send more data */
102 Terminate, /* shutting down... */
103 Timeout, /* Timeout handler; may also be connection timeout */
104 ConnFail, /* What to do when one connection failed? */
105 DNSFail, /* the dns lookup didn't work out. */
106 ShutdownAbort,/* we're going down. make your piece. */
107 NextDBOperation; /* Perform Database IO */
109 IO_LineReaderCallback LineReader; /* if we have linereaders, maybe we want to read more lines before the real application logic is called? */
112 ev_io dns_recv_event,
114 struct ares_options DNSOptions;
115 ares_channel DNSChannel;
116 DNSQueryParts *DNSQuery;
118 evcurl_request_data HttpReq;
120 /* Saving / loading a message async from / to disk */
121 ReadAsyncMsg *ReadMsg;
122 struct CtdlMessage *AsyncMsg;
123 struct recptypes *AsyncRcp;
124 /* Custom data; its expected to contain AsyncIO so we can save malloc()s... */
125 void *Data; /* application specific data */
126 void *CitContext; /* Citadel Session context... */
129 typedef struct _IOAddHandler {
134 void FreeAsyncIOContents(AsyncIO *IO);
136 eNextState NextDBOperation(AsyncIO *IO, IO_CallBack CB);
137 eNextState QueueDBOperation(AsyncIO *IO, IO_CallBack CB);
138 eNextState QueueEventContext(AsyncIO *IO, IO_CallBack CB);
139 int ShutDownEventQueue(void);
141 eNextState InitEventIO(AsyncIO *IO,
144 double first_rw_timeout,
146 void IO_postdns_callback(struct ev_loop *loop, ev_idle *watcher, int revents);
148 int QueueQuery(ns_type Type, const char *name, AsyncIO *IO, DNSQueryParts *QueryParts, IO_CallBack PostDNS);
149 void QueueGetHostByName(AsyncIO *IO, const char *Hostname, DNSQueryParts *QueryParts, IO_CallBack PostDNS);
151 void QueryCbDone(AsyncIO *IO);
153 void StopClient(AsyncIO *IO);
155 void StopClientWatchers(AsyncIO *IO);
157 void SetNextTimeout(AsyncIO *IO, double timeout);
159 void InitC_ares_dns(AsyncIO *IO);
161 #include <curl/curl.h>
165 sta = curl_easy_setopt(chnd, (CURLOPT_##s), (v)); \
167 syslog(LOG_ERR, "error setting option " #s " on curl handle: %s", curl_easy_strerror(sta)); \
171 int evcurl_init(AsyncIO *IO,
174 IO_CallBack CallBack,
175 IO_CallBack Terminate);
177 eNextState ReAttachIO(AsyncIO *IO,
181 void evcurl_handle_start(AsyncIO *IO);
183 #endif /* __EVENT_CLIENT_H__ */