8 #define INLINE __inline__
15 #include <openssl/ssl.h>
19 * New format for a message in memory
22 int cm_magic; /* Self-check (NOT SAVED TO DISK) */
23 char cm_anon_type; /* Anonymous or author-visible */
24 char cm_format_type; /* Format type */
25 char *cm_fields[256]; /* Data fields */
26 unsigned int cm_flags; /* How to handle (NOT SAVED TO DISK) */
29 #define CTDLMESSAGE_MAGIC 0x159d
30 #define CM_SKIP_HOOKS 0x01 /* Don't run server-side handlers */
34 * Generic per-session variable or data structure storage
37 struct CtdlSessData *next;
43 * Static user data symbol types. Server extensions can ask for dynamic
44 * extensions to per-session data, but the symbol ID has to be listed here.
47 SYM_DESIRED_SECTION, /* Used by the MIME parser */
48 SYM_MA_INFO, /* Handles multipart/alternative */
49 SYM_CIT_ICAL, /* Used by the calendar service */
50 SYM_IMAP, /* Used by the IMAP service */
51 SYM_POP3, /* Used by the POP3 service */
52 SYM_SMTP, /* Used by the SMTP service */
55 SYM_VCARD, /* vCard handling requires this */
61 * Here's the big one... the Citadel context structure.
63 * This structure keeps track of all information relating to a running
64 * session on the server. We keep one of these for each session thread.
66 * Note that the first element is "*next" so that it may be used without
67 * modification in a linked list.
70 struct CitContext *prev;
71 struct CitContext *next; /* Link to next session in the list */
73 struct ctdluser user; /* Database record buffers */
76 int state; /* thread state (see CON_ values below) */
77 int kill_me; /* Set to nonzero to flag for termination */
79 char curr_user[USERNAME_SIZE]; /* name of current user */
80 int logged_in; /* logged in */
81 int internal_pgm; /* authenticated as internal program */
82 char temp[PATH_MAX]; /* temp file name */
83 int nologin; /* not allowed to log in */
84 int is_local_socket; /* set to 1 if client is on unix domain sock */
85 int curr_view; /* The view type for the current user/room */
87 char net_node[PATH_MAX];/* Is the client another Citadel server? */
89 int cs_pid; /* session ID */
90 time_t lastcmd; /* time of last command executed */
91 time_t lastidle; /* For computing idle time */
92 time_t previous_login; /* Date/time of previous login */
93 char lastcmdname[5]; /* name of last command executed */
94 unsigned cs_flags; /* miscellaneous flags */
95 void (*h_command_function) (void) ; /* service command function */
96 void (*h_async_function) (void) ; /* do async msgs function */
97 int is_async; /* Nonzero if client accepts async msgs */
98 int async_waiting; /* Nonzero if there are async msgs waiting */
99 int input_waiting; /* Nonzero if there is client input waiting */
101 /* feeping creaturisms... */
102 int cs_clientdev; /* client developer ID */
103 int cs_clienttyp; /* client type code */
104 int cs_clientver; /* client version number */
105 char cs_clientname[32]; /* name of client software */
106 char cs_host[64]; /* host logged in from */
107 char cs_addr[64]; /* address logged in from */
109 /* The Internet type of thing */
110 char cs_inet_email[SIZ];/* Return address of outbound Internet mail */
112 FILE *download_fp; /* Fields relating to file transfer */
114 char upl_file[PATH_MAX];
115 char upl_path[PATH_MAX];
116 char upl_comment[SIZ];
117 char upl_filedir[PATH_MAX];
121 /* Beginning of cryptography - session nonce */
122 char cs_nonce[NONCE_SIZE]; /* The nonce for this session's next auth transaction */
124 /* Redirect this session's output to somewhere else? */
125 FILE *redirect_fp; /* a file instead (will go away) */
126 char *redirect_buffer; /* the buffer */
127 size_t redirect_len; /* length of data in buffer */
128 size_t redirect_alloc; /* length of allocated buffer */
135 char *output_buffer; /* hold output for one big dump */
138 /* A linked list of all instant messages sent to us. */
139 struct ExpressMessage *FirstExpressMessage;
140 int disable_exp; /* Set to 1 to disable incoming pages */
141 int newmail; /* Other sessions increment this */
144 char fake_username[USERNAME_SIZE]; /* Fake username <bc> */
145 char fake_postname[USERNAME_SIZE]; /* Fake postname <bc> */
146 char fake_hostname[64]; /* Fake hostname <bc> */
147 char fake_roomname[ROOMNAMELEN]; /* Fake roomname <bc> */
149 char preferred_formats[SIZ]; /* Preferred MIME formats */
151 /* Dynamically allocated session data */
152 struct CtdlSessData *FirstSessData;
155 typedef struct CitContext t_context;
158 * Values for CitContext.state
160 * A session that is doing nothing is in CON_IDLE state. When activity
161 * is detected on the socket, it goes to CON_READY, indicating that it
162 * needs to have a worker thread bound to it. When a thread binds to
163 * the session, it goes to CON_EXECUTING and does its thing. When the
164 * transaction is finished, the thread sets it back to CON_IDLE and lets
168 CON_IDLE, /* This context is doing nothing */
169 CON_READY, /* This context needs attention */
170 CON_EXECUTING /* This context is bound to a thread */
174 #define CS_STEALTH 1 /* stealth mode */
175 #define CS_CHAT 2 /* chat mode */
176 #define CS_POSTING 4 /* Posting */
178 struct CitContext *MyContext(void);
179 #define CC MyContext()
181 extern struct CitContext *ContextList;
182 extern int ScheduledShutdown;
183 extern struct CitControl CitControl;
186 struct ExpressMessage {
187 struct ExpressMessage *next;
188 time_t timestamp; /* When this message was sent */
189 unsigned flags; /* Special instructions */
190 char sender[64]; /* Name of sending user */
191 char *text; /* Message text (if applicable) */
194 #define EM_BROADCAST 1 /* Broadcast message */
195 #define EM_GO_AWAY 2 /* Server requests client log off */
196 #define EM_CHAT 4 /* Server requests client enter chat */
199 struct ChatLine *next;
203 char chat_username[USERNAME_SIZE];
204 char chat_room[ROOMNAMELEN];
208 * Various things we need to lock and unlock
242 * message transfer formats
245 MT_CITADEL, /* Citadel proprietary */
246 MT_RFC822, /* RFC822 */
247 MT_MIME, /* MIME-formatted message */
248 MT_DOWNLOAD /* Download a component */
252 * Message format types in the database
254 #define FMT_CITADEL 0 /* Citadel vari-format (proprietary) */
255 #define FMT_FIXED 1 /* Fixed format (proprietary) */
256 #define FMT_RFC822 4 /* Standard (headers are in M field) */
260 * Citadel DataBases (define one for each cdb we need to open)
263 CDB_MSGMAIN, /* message base */
264 CDB_USERS, /* user file */
265 CDB_ROOMS, /* room index */
266 CDB_FLOORTAB, /* floor index */
267 CDB_MSGLISTS, /* room message lists */
268 CDB_VISIT, /* user/room relationships */
269 CDB_DIRECTORY, /* address book directory */
270 CDB_USETABLE, /* network use table */
271 CDB_BIGMSGS, /* larger message bodies */
272 MAXCDB /* total number of CDB's defined */
282 /* Structures and declarations for function hooks of various types */
284 struct LogFunctionHook {
285 struct LogFunctionHook *next;
287 void (*h_function_pointer) (char *);
289 extern struct LogFunctionHook *LogHookTable;
291 struct CleanupFunctionHook {
292 struct CleanupFunctionHook *next;
293 void (*h_function_pointer) (void);
295 extern struct CleanupFunctionHook *CleanupHookTable;
301 * SessionFunctionHook extensions are used for any type of hook for which
302 * the context in which it's being called (which is determined by the event
303 * type) will make it obvious for the hook function to know where to look for
306 struct SessionFunctionHook {
307 struct SessionFunctionHook *next;
308 void (*h_function_pointer) (void);
311 extern struct SessionFunctionHook *SessionHookTable;
314 * Event types can't be enum'ed, because they must remain consistent between
315 * builds (to allow for binary modules built somewhere else)
317 #define EVT_STOP 0 /* Session is terminating */
318 #define EVT_START 1 /* Session is starting */
319 #define EVT_LOGIN 2 /* A user is logging in */
320 #define EVT_NEWROOM 3 /* Changing rooms */
321 #define EVT_LOGOUT 4 /* A user is logging out */
322 #define EVT_SETPASS 5 /* Setting or changing password */
323 #define EVT_CMD 6 /* Called after each server command */
324 #define EVT_RWHO 7 /* An RWHO command is being executed */
325 #define EVT_ASYNC 8 /* Doing asynchronous messages */
327 #define EVT_TIMER 50 /* Timer events are called once per minute
328 and are not tied to any session */
331 * UserFunctionHook extensions are used for any type of hook which implements
332 * an operation on a user or username (potentially) other than the one
333 * operating the current session.
335 struct UserFunctionHook {
336 struct UserFunctionHook *next;
337 void (*h_function_pointer) (struct ctdluser *usbuf);
340 extern struct UserFunctionHook *UserHookTable;
342 #define EVT_PURGEUSER 100 /* Deleting a user */
343 #define EVT_NEWUSER 102 /* Creating a user */
346 * MessageFunctionHook extensions are used for hooks which implement handlers
347 * for various types of message operations (save, read, etc.)
349 struct MessageFunctionHook {
350 struct MessageFunctionHook *next;
351 int (*h_function_pointer) (struct CtdlMessage *msg);
354 extern struct MessageFunctionHook *MessageHookTable;
356 #define EVT_BEFOREREAD 200
357 #define EVT_BEFORESAVE 201
358 #define EVT_AFTERSAVE 202
359 #define EVT_SMTPSCAN 203 /* called before submitting a msg from SMTP */
364 * NetprocFunctionHook extensions are used for hooks which implement handlers
365 * for incoming network messages.
367 struct NetprocFunctionHook {
368 struct NetprocFunctionHook *next;
369 int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
371 extern struct NetprocFunctionHook *NetprocHookTable;
375 * DeleteFunctionHook extensions are used for hooks which get called when a
376 * message is about to be deleted.
378 struct DeleteFunctionHook {
379 struct DeleteFunctionHook *next;
380 void (*h_function_pointer) (char *target_room, long msgnum);
382 extern struct DeleteFunctionHook *DeleteHookTable;
386 * ExpressMessageFunctionHook extensions are used for hooks which implement
387 * the sending of an instant message through various channels. Any function
388 * registered should return the number of recipients to whom the message was
389 * successfully transmitted.
391 struct XmsgFunctionHook {
392 struct XmsgFunctionHook *next;
393 int (*h_function_pointer) (char *, char *, char *);
396 extern struct XmsgFunctionHook *XmsgHookTable;
398 /* Priority levels for paging functions (lower is better) */
400 XMSG_PRI_LOCAL, /* Other users on -this- server */
401 XMSG_PRI_REMOTE, /* Other users on a Citadel network (future) */
402 XMSG_PRI_FOREIGN, /* Contacts on foreign instant message hosts */
409 * ServiceFunctionHook extensions are used for hooks which implement various
410 * non-Citadel services (on TCP protocols) directly in the Citadel server.
412 struct ServiceFunctionHook {
413 struct ServiceFunctionHook *next;
416 void (*h_greeting_function) (void) ;
417 void (*h_command_function) (void) ;
418 void (*h_async_function) (void) ;
421 extern struct ServiceFunctionHook *ServiceHookTable;
425 /* Defines the relationship of a user to a particular room */
431 unsigned int v_flags;
433 char v_answered[SIZ];
437 #define V_FORGET 1 /* User has zapped this room */
438 #define V_LOCKOUT 2 /* User is locked out of this room */
439 #define V_ACCESS 4 /* Access is granted to this room */
442 /* Supplementary data for a message on disk
443 * These are kept separate from the message itself for one of two reasons:
444 * 1. Either their values may change at some point after initial save, or
445 * 2. They are merely caches of data which exist somewhere else, for speed.
448 long meta_msgnum; /* Message number in *local* message base */
449 int meta_refcount; /* Number of rooms pointing to this msg */
450 char meta_content_type[64]; /* Cached MIME content-type */
451 long meta_rfc822_length; /* Cache of RFC822-translated msg length */
456 * Serialization routines use this struct to return a pointer and a length
464 /* Preferred field order */
465 /* ********** Important fields */
466 /* *************** Semi-important fields */
467 /* * Message text (MUST be last) */
468 #define FORDER "IPTAFONHRDBCEGJKLQSVWXYZUM"
470 #endif /* SERVER_H */