8 #define INLINE __inline__
15 #define OPENSSL_NO_KRB5 /* work around redhat b0rken ssl headers */
16 #include <openssl/ssl.h>
20 * New format for a message in memory
23 int cm_magic; /* Self-check (NOT SAVED TO DISK) */
24 char cm_anon_type; /* Anonymous or author-visible */
25 char cm_format_type; /* Format type */
26 char *cm_fields[256]; /* Data fields */
27 unsigned int cm_flags; /* How to handle (NOT SAVED TO DISK) */
30 #define CTDLMESSAGE_MAGIC 0x159d
31 #define CM_SKIP_HOOKS 0x01 /* Don't run server-side handlers */
35 * Here's the big one... the Citadel context structure.
37 * This structure keeps track of all information relating to a running
38 * session on the server. We keep one of these for each session thread.
40 * Note that the first element is "*next" so that it may be used without
41 * modification in a linked list.
44 struct CitContext *prev; /* Link to previous session in list */
45 struct CitContext *next; /* Link to next session in the list */
47 int state; /* thread state (see CON_ values below) */
48 int kill_me; /* Set to nonzero to flag for termination */
50 int cs_pid; /* session ID */
51 time_t lastcmd; /* time of last command executed */
52 time_t lastidle; /* For computing idle time */
54 char curr_user[USERNAME_SIZE]; /* name of current user */
55 int logged_in; /* logged in */
56 int internal_pgm; /* authenticated as internal program */
57 int nologin; /* not allowed to log in */
58 int is_local_socket; /* set to 1 if client is on unix domain sock */
59 int curr_view; /* The view type for the current user/room */
61 char net_node[32] ;/* Is the client another Citadel server? */
62 time_t previous_login; /* Date/time of previous login */
63 char lastcmdname[5]; /* name of last command executed */
64 unsigned cs_flags; /* miscellaneous flags */
65 void (*h_command_function) (void) ; /* service command function */
66 void (*h_async_function) (void) ; /* do async msgs function */
67 int is_async; /* Nonzero if client accepts async msgs */
68 int async_waiting; /* Nonzero if there are async msgs waiting */
69 int input_waiting; /* Nonzero if there is client input waiting */
71 /* feeping creaturisms... */
72 int cs_clientdev; /* client developer ID */
73 int cs_clienttyp; /* client type code */
74 int cs_clientver; /* client version number */
75 char cs_clientname[32]; /* name of client software */
76 char cs_host[64]; /* host logged in from */
77 char cs_addr[64]; /* address logged in from */
79 /* The Internet type of thing */
80 char cs_inet_email[128];/* Return address of outbound Internet mail */
82 FILE *download_fp; /* Fields relating to file transfer */
83 char download_desired_section[128];
86 char upl_path[PATH_MAX];
87 char upl_comment[256];
88 char upl_filedir[PATH_MAX];
92 struct ctdluser user; /* Database record buffers */
95 /* Beginning of cryptography - session nonce */
96 char cs_nonce[NONCE_SIZE]; /* The nonce for this session's next auth transaction */
98 /* Redirect this session's output to a memory buffer? */
99 char *redirect_buffer; /* the buffer */
100 size_t redirect_len; /* length of data in buffer */
101 size_t redirect_alloc; /* length of allocated buffer */
108 char *output_buffer; /* hold output for one big dump */
111 /* A linked list of all instant messages sent to us. */
112 struct ExpressMessage *FirstExpressMessage;
113 int disable_exp; /* Set to 1 to disable incoming pages */
114 int newmail; /* Other sessions increment this */
117 char fake_username[USERNAME_SIZE]; /* Fake username <bc> */
118 char fake_postname[USERNAME_SIZE]; /* Fake postname <bc> */
119 char fake_hostname[64]; /* Fake hostname <bc> */
120 char fake_roomname[ROOMNAMELEN]; /* Fake roomname <bc> */
122 char preferred_formats[256]; /* Preferred MIME formats */
124 /* Dynamically allocated session data */
125 struct citimap *IMAP;
126 struct citpop3 *POP3;
127 struct citsmtp *SMTP;
130 struct cit_ical *CIT_ICAL; /* calendaring data */
131 struct ma_info *ma; /* multipart/alternative data */
134 typedef struct CitContext t_context;
137 * Values for CitContext.state
139 * A session that is doing nothing is in CON_IDLE state. When activity
140 * is detected on the socket, it goes to CON_READY, indicating that it
141 * needs to have a worker thread bound to it. When a thread binds to
142 * the session, it goes to CON_EXECUTING and does its thing. When the
143 * transaction is finished, the thread sets it back to CON_IDLE and lets
147 CON_IDLE, /* This context is doing nothing */
148 CON_READY, /* This context needs attention */
149 CON_EXECUTING /* This context is bound to a thread */
153 #define CS_STEALTH 1 /* stealth mode */
154 #define CS_CHAT 2 /* chat mode */
155 #define CS_POSTING 4 /* Posting */
157 struct CitContext *MyContext(void);
158 #define CC MyContext()
161 * This is the control record for the message base...
164 long MMhighest; /* highest message number in file */
165 unsigned MMflags; /* Global system flags */
166 long MMnextuser; /* highest user number on system */
167 long MMnextroom; /* highest room number on system */
168 int version; /* Server-hosted upgrade level */
169 int fulltext_wordbreaker; /* ID of wordbreaker in use */
170 long MMfulltext; /* highest message number indexed */
173 extern struct CitContext *ContextList;
174 extern int ScheduledShutdown;
175 extern struct CitControl CitControl;
178 struct ExpressMessage {
179 struct ExpressMessage *next;
180 time_t timestamp; /* When this message was sent */
181 unsigned flags; /* Special instructions */
182 char sender[64]; /* Name of sending user */
183 char *text; /* Message text (if applicable) */
186 #define EM_BROADCAST 1 /* Broadcast message */
187 #define EM_GO_AWAY 2 /* Server requests client log off */
188 #define EM_CHAT 4 /* Server requests client enter chat */
191 struct ChatLine *next;
195 char chat_username[USERNAME_SIZE];
196 char chat_room[ROOMNAMELEN];
200 * Various things we need to lock and unlock
235 * message transfer formats
238 MT_CITADEL, /* Citadel proprietary */
239 MT_RFC822, /* RFC822 */
240 MT_MIME, /* MIME-formatted message */
241 MT_DOWNLOAD /* Download a component */
245 * Message format types in the database
247 #define FMT_CITADEL 0 /* Citadel vari-format (proprietary) */
248 #define FMT_FIXED 1 /* Fixed format (proprietary) */
249 #define FMT_RFC822 4 /* Standard (headers are in M field) */
253 * Citadel DataBases (define one for each cdb we need to open)
256 CDB_MSGMAIN, /* message base */
257 CDB_USERS, /* user file */
258 CDB_ROOMS, /* room index */
259 CDB_FLOORTAB, /* floor index */
260 CDB_MSGLISTS, /* room message lists */
261 CDB_VISIT, /* user/room relationships */
262 CDB_DIRECTORY, /* address book directory */
263 CDB_USETABLE, /* network use table */
264 CDB_BIGMSGS, /* larger message bodies */
265 CDB_FULLTEXT, /* full text search index */
266 MAXCDB /* total number of CDB's defined */
276 /* Structures and declarations for function hooks of various types */
278 struct LogFunctionHook {
279 struct LogFunctionHook *next;
281 void (*h_function_pointer) (char *);
283 extern struct LogFunctionHook *LogHookTable;
285 struct CleanupFunctionHook {
286 struct CleanupFunctionHook *next;
287 void (*h_function_pointer) (void);
289 extern struct CleanupFunctionHook *CleanupHookTable;
295 * SessionFunctionHook extensions are used for any type of hook for which
296 * the context in which it's being called (which is determined by the event
297 * type) will make it obvious for the hook function to know where to look for
300 struct SessionFunctionHook {
301 struct SessionFunctionHook *next;
302 void (*h_function_pointer) (void);
305 extern struct SessionFunctionHook *SessionHookTable;
308 * Event types can't be enum'ed, because they must remain consistent between
309 * builds (to allow for binary modules built somewhere else)
311 #define EVT_STOP 0 /* Session is terminating */
312 #define EVT_START 1 /* Session is starting */
313 #define EVT_LOGIN 2 /* A user is logging in */
314 #define EVT_NEWROOM 3 /* Changing rooms */
315 #define EVT_LOGOUT 4 /* A user is logging out */
316 #define EVT_SETPASS 5 /* Setting or changing password */
317 #define EVT_CMD 6 /* Called after each server command */
318 #define EVT_RWHO 7 /* An RWHO command is being executed */
319 #define EVT_ASYNC 8 /* Doing asynchronous messages */
321 #define EVT_TIMER 50 /* Timer events are called once per minute
322 and are not tied to any session */
325 * UserFunctionHook extensions are used for any type of hook which implements
326 * an operation on a user or username (potentially) other than the one
327 * operating the current session.
329 struct UserFunctionHook {
330 struct UserFunctionHook *next;
331 void (*h_function_pointer) (struct ctdluser *usbuf);
334 extern struct UserFunctionHook *UserHookTable;
336 #define EVT_PURGEUSER 100 /* Deleting a user */
337 #define EVT_NEWUSER 102 /* Creating a user */
340 * MessageFunctionHook extensions are used for hooks which implement handlers
341 * for various types of message operations (save, read, etc.)
343 struct MessageFunctionHook {
344 struct MessageFunctionHook *next;
345 int (*h_function_pointer) (struct CtdlMessage *msg);
348 extern struct MessageFunctionHook *MessageHookTable;
350 #define EVT_BEFOREREAD 200
351 #define EVT_BEFORESAVE 201
352 #define EVT_AFTERSAVE 202
353 #define EVT_SMTPSCAN 203 /* called before submitting a msg from SMTP */
358 * NetprocFunctionHook extensions are used for hooks which implement handlers
359 * for incoming network messages.
361 struct NetprocFunctionHook {
362 struct NetprocFunctionHook *next;
363 int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
365 extern struct NetprocFunctionHook *NetprocHookTable;
369 * DeleteFunctionHook extensions are used for hooks which get called when a
370 * message is about to be deleted.
372 struct DeleteFunctionHook {
373 struct DeleteFunctionHook *next;
374 void (*h_function_pointer) (char *target_room, long msgnum);
376 extern struct DeleteFunctionHook *DeleteHookTable;
380 * ExpressMessageFunctionHook extensions are used for hooks which implement
381 * the sending of an instant message through various channels. Any function
382 * registered should return the number of recipients to whom the message was
383 * successfully transmitted.
385 struct XmsgFunctionHook {
386 struct XmsgFunctionHook *next;
387 int (*h_function_pointer) (char *, char *, char *);
390 extern struct XmsgFunctionHook *XmsgHookTable;
392 /* Priority levels for paging functions (lower is better) */
394 XMSG_PRI_LOCAL, /* Other users on -this- server */
395 XMSG_PRI_REMOTE, /* Other users on a Citadel network (future) */
396 XMSG_PRI_FOREIGN, /* Contacts on foreign instant message hosts */
403 * ServiceFunctionHook extensions are used for hooks which implement various
404 * non-Citadel services (on TCP protocols) directly in the Citadel server.
406 struct ServiceFunctionHook {
407 struct ServiceFunctionHook *next;
410 void (*h_greeting_function) (void) ;
411 void (*h_command_function) (void) ;
412 void (*h_async_function) (void) ;
415 extern struct ServiceFunctionHook *ServiceHookTable;
419 /* Defines the relationship of a user to a particular room */
425 unsigned int v_flags;
427 char v_answered[SIZ];
431 #define V_FORGET 1 /* User has zapped this room */
432 #define V_LOCKOUT 2 /* User is locked out of this room */
433 #define V_ACCESS 4 /* Access is granted to this room */
436 /* Supplementary data for a message on disk
437 * These are kept separate from the message itself for one of two reasons:
438 * 1. Either their values may change at some point after initial save, or
439 * 2. They are merely caches of data which exist somewhere else, for speed.
442 long meta_msgnum; /* Message number in *local* message base */
443 int meta_refcount; /* Number of rooms pointing to this msg */
444 char meta_content_type[64]; /* Cached MIME content-type */
445 long meta_rfc822_length; /* Cache of RFC822-translated msg length */
450 * Serialization routines use this struct to return a pointer and a length
458 /* Preferred field order */
459 /* ********** Important fields */
460 /* *************** Semi-important fields */
461 /* * Message text (MUST be last) */
462 #define FORDER "IPTAFONHRDBCEGJKLQSVWXZYUM"
464 #endif /* SERVER_H */