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 */
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? */
133 /* A linked list of all express messages sent to us. */
134 struct ExpressMessage *FirstExpressMessage;
135 int disable_exp; /* Set to 1 to disable incoming pages */
136 int newmail; /* Other sessions increment this */
139 char fake_username[USERNAME_SIZE]; /* Fake username <bc> */
140 char fake_postname[USERNAME_SIZE]; /* Fake postname <bc> */
141 char fake_hostname[64]; /* Fake hostname <bc> */
142 char fake_roomname[ROOMNAMELEN]; /* Fake roomname <bc> */
144 char preferred_formats[SIZ]; /* Preferred MIME formats */
146 /* Dynamically allocated session data */
147 struct CtdlSessData *FirstSessData;
150 typedef struct CitContext t_context;
152 /* Values for CitContext.state */
154 CON_IDLE, /* This context is doing nothing */
155 CON_EXECUTING /* This context is bound to a thread */
159 #define CS_STEALTH 1 /* stealth mode */
160 #define CS_CHAT 2 /* chat mode */
161 #define CS_POSTING 4 /* Posting */
163 struct CitContext *MyContext(void);
164 #define CC MyContext()
166 extern struct CitContext *ContextList;
167 extern int ScheduledShutdown;
168 extern struct CitControl CitControl;
171 struct ExpressMessage {
172 struct ExpressMessage *next;
173 time_t timestamp; /* When this message was sent */
174 unsigned flags; /* Special instructions */
175 char sender[64]; /* Name of sending user */
176 char *text; /* Message text (if applicable) */
179 #define EM_BROADCAST 1 /* Broadcast message */
180 #define EM_GO_AWAY 2 /* Server requests client log off */
181 #define EM_CHAT 4 /* Server requests client enter chat */
184 struct ChatLine *next;
188 char chat_username[USERNAME_SIZE];
189 char chat_room[ROOMNAMELEN];
193 * Various things we need to lock and unlock
226 * message transfer formats
229 MT_CITADEL, /* Citadel proprietary */
230 MT_RFC822, /* RFC822 */
231 MT_MIME, /* MIME-formatted message */
232 MT_DOWNLOAD /* Download a component */
236 * Message format types in the database
238 #define FMT_CITADEL 0 /* Citadel vari-format (proprietary) */
239 #define FMT_FIXED 1 /* Fixed format (proprietary) */
240 #define FMT_RFC822 4 /* Standard (headers are in M field) */
244 * Citadel DataBases (define one for each cdb we need to open)
247 CDB_MSGMAIN, /* message base */
248 CDB_USERS, /* user file */
249 CDB_ROOMS, /* room index */
250 CDB_FLOORTAB, /* floor index */
251 CDB_MSGLISTS, /* room message lists */
252 CDB_VISIT, /* user/room relationships */
253 CDB_DIRECTORY, /* address book directory */
254 CDB_USETABLE, /* network use table */
255 MAXCDB /* total number of CDB's defined */
265 /* Structures and declarations for function hooks of various types */
267 struct LogFunctionHook {
268 struct LogFunctionHook *next;
270 void (*h_function_pointer) (char *);
272 extern struct LogFunctionHook *LogHookTable;
274 struct CleanupFunctionHook {
275 struct CleanupFunctionHook *next;
276 void (*h_function_pointer) (void);
278 extern struct CleanupFunctionHook *CleanupHookTable;
284 * SessionFunctionHook extensions are used for any type of hook for which
285 * the context in which it's being called (which is determined by the event
286 * type) will make it obvious for the hook function to know where to look for
289 struct SessionFunctionHook {
290 struct SessionFunctionHook *next;
291 void (*h_function_pointer) (void);
294 extern struct SessionFunctionHook *SessionHookTable;
297 * Event types can't be enum'ed, because they must remain consistent between
298 * builds (to allow for binary modules built somewhere else)
300 #define EVT_STOP 0 /* Session is terminating */
301 #define EVT_START 1 /* Session is starting */
302 #define EVT_LOGIN 2 /* A user is logging in */
303 #define EVT_NEWROOM 3 /* Changing rooms */
304 #define EVT_LOGOUT 4 /* A user is logging out */
305 #define EVT_SETPASS 5 /* Setting or changing password */
306 #define EVT_CMD 6 /* Called after each server command */
307 #define EVT_RWHO 7 /* An RWHO command is being executed */
309 #define EVT_TIMER 50 /* Timer events are called once per minute
310 and are not tied to any session */
313 * UserFunctionHook extensions are used for any type of hook which implements
314 * an operation on a user or username (potentially) other than the one
315 * operating the current session.
317 struct UserFunctionHook {
318 struct UserFunctionHook *next;
319 void (*h_function_pointer) (char *username, long usernum);
322 extern struct UserFunctionHook *UserHookTable;
324 #define EVT_PURGEUSER 100 /* Deleting a user */
325 #define EVT_OUTPUTMSG 101 /* Outputting a message */
328 * MessageFunctionHook extensions are used for hooks which implement handlers
329 * for various types of message operations (save, read, etc.)
331 struct MessageFunctionHook {
332 struct MessageFunctionHook *next;
333 int (*h_function_pointer) (struct CtdlMessage *msg);
336 extern struct MessageFunctionHook *MessageHookTable;
338 #define EVT_BEFOREREAD 200
339 #define EVT_BEFORESAVE 201
340 #define EVT_AFTERSAVE 202
341 #define EVT_SMTPSCAN 203 /* called before submitting a msg from SMTP */
346 * NetprocFunctionHook extensions are used for hooks which implement handlers
347 * for incoming network messages.
349 struct NetprocFunctionHook {
350 struct NetprocFunctionHook *next;
351 int (*h_function_pointer) (struct CtdlMessage *msg, char *target_room);
353 extern struct NetprocFunctionHook *NetprocHookTable;
357 * DeleteFunctionHook extensions are used for hooks which get called when a
358 * message is about to be deleted.
360 struct DeleteFunctionHook {
361 struct DeleteFunctionHook *next;
362 void (*h_function_pointer) (char *target_room, long msgnum);
364 extern struct DeleteFunctionHook *DeleteHookTable;
368 * ExpressMessageFunctionHook extensions are used for hooks which implement
369 * the sending of an express message through various channels. Any function
370 * registered should return the number of recipients to whom the message was
371 * successfully transmitted.
373 struct XmsgFunctionHook {
374 struct XmsgFunctionHook *next;
375 int (*h_function_pointer) (char *, char *, char *);
378 extern struct XmsgFunctionHook *XmsgHookTable;
380 /* Priority levels for paging functions (lower is better) */
382 XMSG_PRI_LOCAL, /* Other users on -this- server */
383 XMSG_PRI_REMOTE, /* Other users on a Citadel network (future) */
384 XMSG_PRI_FOREIGN, /* Contacts on foreign instant message hosts */
391 * ServiceFunctionHook extensions are used for hooks which implement various
392 * non-Citadel services (on TCP protocols) directly in the Citadel server.
394 struct ServiceFunctionHook {
395 struct ServiceFunctionHook *next;
398 void (*h_greeting_function) (void) ;
399 void (*h_command_function) (void) ;
402 extern struct ServiceFunctionHook *ServiceHookTable;
406 /* Defines the relationship of a user to a particular room */
412 unsigned int v_flags;
417 #define V_FORGET 1 /* User has zapped this room */
418 #define V_LOCKOUT 2 /* User is locked out of this room */
419 #define V_ACCESS 4 /* Access is granted to this room */
422 /* Supplementary data for a message on disk
423 * (These are kept separately from the message itself because they are
424 * fields whose values may change at some point after the message is saved.)
427 long meta_msgnum; /* Message number in *local* message base */
428 int meta_refcount; /* Number of rooms which point to this msg */
429 char meta_content_type[64];
430 /* more stuff will be added to this record in the future */
435 /* Built-in debuggable stuff for checking for memory leaks */
436 #ifdef DEBUG_MEMORY_LEAKS
438 #define mallok(howbig) tracked_malloc(howbig, __FILE__, __LINE__)
439 #define phree(whichptr) tracked_free(whichptr)
440 #define reallok(whichptr,howbig) tracked_realloc(whichptr,howbig)
441 #define strdoop(orig) tracked_strdup(orig, __FILE__, __LINE__)
443 void *tracked_malloc(size_t, char *, int);
444 void tracked_free(void *);
445 void *tracked_realloc(void *, size_t);
446 void dump_tracked(void);
447 char *tracked_strdup(const char *, char *, int);
450 struct TheHeap *next;
456 extern struct TheHeap *heap;
460 #define mallok(howbig) malloc(howbig)
461 #define phree(whichptr) free(whichptr)
462 #define reallok(whichptr,howbig) realloc(whichptr,howbig)
463 #define strdoop(orig) strdup(orig)
470 * Serialization routines use this struct to return a pointer and a length
478 /* Preferred field order */
479 /* ********** Important fields */
480 /* *************** Semi-important fields */
481 /* * Message text (MUST be last) */
482 #define FORDER "IPTAFONHRDBCEGJKLQSVWXYZUM"
484 #endif /* SERVER_H */