3 /* Uncomment this if you want to track memory leaks.
4 * This incurs some overhead, so don't use it unless you're debugging the code!
6 /* #define DEBUG_MEMORY_LEAKS */
13 #define INLINE __inline__
20 #include <openssl/ssl.h>
24 * New format for a message in memory
27 int cm_magic; /* Self-check (NOT SAVED TO DISK) */
28 char cm_anon_type; /* Anonymous or author-visible */
29 char cm_format_type; /* Format type */
30 char *cm_fields[256]; /* Data fields */
31 unsigned int cm_flags; /* How to handle (NOT SAVED TO DISK) */
34 #define CTDLMESSAGE_MAGIC 0x159d
35 #define CM_SKIP_HOOKS 0x01 /* Don't run server-side handlers */
39 * Generic per-session variable or data structure storage
42 struct CtdlSessData *next;
48 * Static user data symbol types. Server extensions can ask for dynamic
49 * extensions to per-session data, but the symbol ID has to be listed here.
52 SYM_DESIRED_SECTION, /* Used by the MIME parser */
53 SYM_MA_INFO, /* Handles multipart/alternative */
54 SYM_REPL, /* Used for replication checking */
55 SYM_CIT_ICAL, /* Used by the calendar service */
56 SYM_IMAP, /* Used by the IMAP service */
57 SYM_POP3, /* Used by the POP3 service */
58 SYM_SMTP, /* Used by the SMTP service */
61 SYM_VCARD, /* vCard handling requires this */
67 * Here's the big one... the Citadel context structure.
69 * This structure keeps track of all information relating to a running
70 * session on the server. We keep one of these for each session thread.
72 * Note that the first element is "*next" so that it may be used without
73 * modification in a linked list.
76 struct CitContext *next; /* Link to next session in the list */
78 struct ctdluser user; /* Database record buffers */
81 int state; /* thread state (see CON_ values below) */
82 int kill_me; /* Set to nonzero to flag for termination */
84 char curr_user[USERNAME_SIZE]; /* name of current user */
85 int logged_in; /* logged in */
86 int internal_pgm; /* authenticated as internal program */
87 char temp[PATH_MAX]; /* temp file name */
88 int nologin; /* not allowed to log in */
89 int is_local_socket; /* set to 1 if client is on unix domain sock */
91 char net_node[PATH_MAX];/* Is the client another Citadel server? */
93 int cs_pid; /* session ID */
94 time_t lastcmd; /* time of last command executed */
95 time_t lastidle; /* For computing idle time */
96 time_t previous_login; /* Date/time of previous login */
97 char lastcmdname[5]; /* name of last command executed */
98 unsigned cs_flags; /* miscellaneous flags */
99 void (*h_command_function) (void) ; /* service command function */
100 int is_async; /* Nonzero if client accepts async msgs */
102 /* feeping creaturisms... */
103 int cs_clientdev; /* client developer ID */
104 int cs_clienttyp; /* client type code */
105 int cs_clientver; /* client version number */
106 char cs_clientname[32]; /* name of client software */
107 char cs_host[64]; /* host logged in from */
108 char cs_addr[64]; /* address logged in from */
110 /* The Internet type of thing */
111 char cs_inet_email[SIZ];/* Return address of outbound Internet mail */
113 FILE *download_fp; /* Fields relating to file transfer */
115 char upl_file[PATH_MAX];
116 char upl_path[PATH_MAX];
117 char upl_comment[SIZ];
118 char upl_filedir[PATH_MAX];
122 /* Beginning of cryptography - session nonce */
123 char cs_nonce[NONCE_SIZE]; /* The nonce for this session's next auth transaction */
125 /* Redirect this session's output to somewhere else? */
134 char *output_buffer; /* hold output for one big dump */
137 /* A linked list of all express messages sent to us. */
138 struct ExpressMessage *FirstExpressMessage;
139 int disable_exp; /* Set to 1 to disable incoming pages */
140 int newmail; /* Other sessions increment this */
143 char fake_username[USERNAME_SIZE]; /* Fake username <bc> */
144 char fake_postname[USERNAME_SIZE]; /* Fake postname <bc> */
145 char fake_hostname[64]; /* Fake hostname <bc> */
146 char fake_roomname[ROOMNAMELEN]; /* Fake roomname <bc> */
148 char preferred_formats[SIZ]; /* Preferred MIME formats */
150 /* Dynamically allocated session data */
151 struct CtdlSessData *FirstSessData;
154 typedef struct CitContext t_context;
156 /* Values for CitContext.state */
158 CON_IDLE, /* This context is doing nothing */
159 CON_READY, /* This context is ready-to-run */
160 CON_EXECUTING, /* This context is bound to a thread */
164 #define CS_STEALTH 1 /* stealth mode */
165 #define CS_CHAT 2 /* chat mode */
166 #define CS_POSTING 4 /* Posting */
168 struct CitContext *MyContext(void);
169 #define CC MyContext()
171 extern struct CitContext *ContextList;
172 extern int ScheduledShutdown;
173 extern struct CitControl CitControl;
176 struct ExpressMessage {
177 struct ExpressMessage *next;
178 time_t timestamp; /* When this message was sent */
179 unsigned flags; /* Special instructions */
180 char sender[64]; /* Name of sending user */
181 char *text; /* Message text (if applicable) */
184 #define EM_BROADCAST 1 /* Broadcast message */
185 #define EM_GO_AWAY 2 /* Server requests client log off */
186 #define EM_CHAT 4 /* Server requests client enter chat */
189 struct ChatLine *next;
193 char chat_username[USERNAME_SIZE];
194 char chat_room[ROOMNAMELEN];
198 * Various things we need to lock and unlock
233 * message transfer formats
236 MT_CITADEL, /* Citadel proprietary */
237 MT_RFC822, /* RFC822 */
238 MT_MIME, /* MIME-formatted message */
239 MT_DOWNLOAD /* Download a component */
243 * Message format types in the database
245 #define FMT_CITADEL 0 /* Citadel vari-format (proprietary) */
246 #define FMT_FIXED 1 /* Fixed format (proprietary) */
247 #define FMT_RFC822 4 /* Standard (headers are in M field) */
251 * Citadel DataBases (define one for each cdb we need to open)
254 CDB_MSGMAIN, /* message base */
255 CDB_USERS, /* user file */
256 CDB_ROOMS, /* room index */
257 CDB_FLOORTAB, /* floor index */
258 CDB_MSGLISTS, /* room message lists */
259 CDB_VISIT, /* user/room relationships */
260 CDB_DIRECTORY, /* address book directory */
261 CDB_USETABLE, /* network use table */
262 MAXCDB /* total number of CDB's defined */
272 /* Structures and declarations for function hooks of various types */
274 struct LogFunctionHook {
275 struct LogFunctionHook *next;
277 void (*h_function_pointer) (char *);
279 extern struct LogFunctionHook *LogHookTable;
281 struct CleanupFunctionHook {
282 struct CleanupFunctionHook *next;
283 void (*h_function_pointer) (void);
285 extern struct CleanupFunctionHook *CleanupHookTable;
291 * SessionFunctionHook extensions are used for any type of hook for which
292 * the context in which it's being called (which is determined by the event
293 * type) will make it obvious for the hook function to know where to look for
296 struct SessionFunctionHook {
297 struct SessionFunctionHook *next;
298 void (*h_function_pointer) (void);
301 extern struct SessionFunctionHook *SessionHookTable;
304 * Event types can't be enum'ed, because they must remain consistent between
305 * builds (to allow for binary modules built somewhere else)
307 #define EVT_STOP 0 /* Session is terminating */
308 #define EVT_START 1 /* Session is starting */
309 #define EVT_LOGIN 2 /* A user is logging in */
310 #define EVT_NEWROOM 3 /* Changing rooms */
311 #define EVT_LOGOUT 4 /* A user is logging out */
312 #define EVT_SETPASS 5 /* Setting or changing password */
313 #define EVT_CMD 6 /* Called after each server command */
314 #define EVT_RWHO 7 /* An RWHO command is being executed */
316 #define EVT_TIMER 50 /* Timer events are called once per minute
317 and are not tied to any session */
320 * UserFunctionHook extensions are used for any type of hook which implements
321 * an operation on a user or username (potentially) other than the one
322 * operating the current session.
324 struct UserFunctionHook {
325 struct UserFunctionHook *next;
326 void (*h_function_pointer) (struct ctdluser *usbuf);
329 extern struct UserFunctionHook *UserHookTable;
331 #define EVT_PURGEUSER 100 /* Deleting a user */
332 #define EVT_NEWUSER 102 /* Creating a user */
335 * MessageFunctionHook extensions are used for hooks which implement handlers
336 * for various types of message operations (save, read, etc.)
338 struct MessageFunctionHook {
339 struct MessageFunctionHook *next;
340 int (*h_function_pointer) (struct CtdlMessage *msg);
343 extern struct MessageFunctionHook *MessageHookTable;
345 #define EVT_BEFOREREAD 200
346 #define EVT_BEFORESAVE 201
347 #define EVT_AFTERSAVE 202
348 #define EVT_SMTPSCAN 203 /* called before submitting a msg from SMTP */
353 * NetprocFunctionHook extensions are used for hooks which implement handlers
354 * for incoming network messages.
356 struct NetprocFunctionHook {
357 struct NetprocFunctionHook *next;
358 int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
360 extern struct NetprocFunctionHook *NetprocHookTable;
364 * DeleteFunctionHook extensions are used for hooks which get called when a
365 * message is about to be deleted.
367 struct DeleteFunctionHook {
368 struct DeleteFunctionHook *next;
369 void (*h_function_pointer) (char *target_room, long msgnum);
371 extern struct DeleteFunctionHook *DeleteHookTable;
375 * ExpressMessageFunctionHook extensions are used for hooks which implement
376 * the sending of an express message through various channels. Any function
377 * registered should return the number of recipients to whom the message was
378 * successfully transmitted.
380 struct XmsgFunctionHook {
381 struct XmsgFunctionHook *next;
382 int (*h_function_pointer) (char *, char *, char *);
385 extern struct XmsgFunctionHook *XmsgHookTable;
387 /* Priority levels for paging functions (lower is better) */
389 XMSG_PRI_LOCAL, /* Other users on -this- server */
390 XMSG_PRI_REMOTE, /* Other users on a Citadel network (future) */
391 XMSG_PRI_FOREIGN, /* Contacts on foreign instant message hosts */
398 * ServiceFunctionHook extensions are used for hooks which implement various
399 * non-Citadel services (on TCP protocols) directly in the Citadel server.
401 struct ServiceFunctionHook {
402 struct ServiceFunctionHook *next;
405 void (*h_greeting_function) (void) ;
406 void (*h_command_function) (void) ;
409 extern struct ServiceFunctionHook *ServiceHookTable;
413 /* Defines the relationship of a user to a particular room */
419 unsigned int v_flags;
421 char v_answered[SIZ];
425 #define V_FORGET 1 /* User has zapped this room */
426 #define V_LOCKOUT 2 /* User is locked out of this room */
427 #define V_ACCESS 4 /* Access is granted to this room */
430 /* Supplementary data for a message on disk
431 * (These are kept separately from the message itself because they are
432 * fields whose values may change at some point after the message is saved.)
435 long meta_msgnum; /* Message number in *local* message base */
436 int meta_refcount; /* Number of rooms which point to this msg */
437 char meta_content_type[64];
438 /* more stuff will be added to this record in the future */
443 /* Built-in debuggable stuff for checking for memory leaks */
444 #ifdef DEBUG_MEMORY_LEAKS
446 #define mallok(howbig) tracked_malloc(howbig, __FILE__, __LINE__)
447 #define phree(whichptr) tracked_free(whichptr)
448 #define reallok(whichptr,howbig) tracked_realloc(whichptr,howbig)
449 #define strdoop(orig) tracked_strdup(orig, __FILE__, __LINE__)
451 void *tracked_malloc(size_t, char *, int);
452 void tracked_free(void *);
453 void *tracked_realloc(void *, size_t);
454 void dump_tracked(void);
455 char *tracked_strdup(const char *, char *, int);
458 struct TheHeap *next;
464 extern struct TheHeap *heap;
468 #define mallok(howbig) malloc(howbig)
469 #define phree(whichptr) free(whichptr)
470 #define reallok(whichptr,howbig) realloc(whichptr,howbig)
471 #define strdoop(orig) strdup(orig)
478 * Serialization routines use this struct to return a pointer and a length
486 /* Preferred field order */
487 /* ********** Important fields */
488 /* *************** Semi-important fields */
489 /* * Message text (MUST be last) */
490 #define FORDER "IPTAFONHRDBCEGJKLQSVWXYZUM"
492 #endif /* SERVER_H */