8 #include "sysdep_decls.h"
12 // Values for CitContext.state
14 // A session that is doing nothing is in CON_IDLE state. When activity
15 // is detected on the socket, it goes to CON_READY, indicating that it
16 // needs to have a worker thread bound to it. When a thread binds to
17 // the session, it goes to CON_EXECUTING and does its thing. When the
18 // transaction is finished, the thread sets it back to CON_IDLE and lets
20 typedef enum __CCState {
21 CON_IDLE, // This context is doing nothing
22 CON_GREETING, // This context needs to output its greeting
23 CON_STARTING, // This context is outputting its greeting
24 CON_READY, // This context needs attention
25 CON_EXECUTING, // This context is bound to a thread
26 CON_SYS // This is a system context and mustn't be purged
29 #ifndef __CIT_CONTEXT__
30 #define __CIT_CONTEXT__
31 typedef struct CitContext CitContext;
34 // This structure keeps track of all information relating to a running
35 // session on the server. We keep one of these for each session.
37 CitContext *prev; /* Link to previous session in list */
38 CitContext *next; /* Link to next session in the list */
40 int cs_pid; /* session ID */
41 int dont_term; /* for special activities like artv so we don't get killed */
42 double created; /* time of birth */
43 time_t lastcmd; /* time of last command executed */
44 time_t lastidle; /* For computing idle time */
45 CCState state; /* thread state (see CON_ values below) */
46 int kill_me; /* Set to nonzero to flag for termination */
48 IOBuffer SendBuf, /* Our write Buffer */
49 RecvBuf, /* Our block buffered read buffer */
50 SBuf; /* Our block buffered read buffer for clients */
52 StrBuf *MigrateBuf; /* Our block buffered read buffer */
53 StrBuf *sMigrateBuf; /* Our block buffered read buffer */
56 int is_local_client; /* set to 1 if client is running on the same host */
57 /* Redirect this session's output to a memory buffer? */
58 StrBuf *redirect_buffer; /* the buffer */
59 StrBuf *StatusMessage;
65 char curr_user[USERNAME_SIZE]; /* name of current user */
66 int logged_in; /* logged in? */
67 int internal_pgm; /* authenticated as internal program? */
68 int nologin; /* not allowed to log in */
69 int curr_view; /* The view type for the current user/room */
71 time_t previous_login; /* Date/time of previous login */
72 char lastcmdname[5]; /* name of last command executed */
73 unsigned cs_flags; /* miscellaneous flags */
74 int is_async; /* Nonzero if client accepts async msgs */
75 int async_waiting; /* Nonzero if there are async msgs waiting */
76 int input_waiting; /* Nonzero if there is client input waiting */
77 int can_receive_im; /* Session is capable of receiving instant messages */
79 /* Client information */
80 char cs_clientinfo[256];/* if its a unix domain socket, some info for logging. */
81 uid_t cs_UDSclientUID; /* the uid of the client when talking via UDS */
82 char cs_clientname[32]; /* name of client software */
83 char cs_host[64]; /* host logged in from */
84 char cs_addr[64]; /* address logged in from */
86 /* The Internet type of thing */
87 char cs_principal_id[256]; /* User principal identity for XMPP, ActivityPub, etc. */
88 char cs_inet_email[128]; /* Return address of outbound Internet mail */
89 char cs_inet_other_emails[1024]; /* User's other valid Internet email addresses */
90 char cs_inet_fn[128]; /* Friendly-name of outbound Internet mail */
92 FILE *download_fp; /* Fields relating to file transfer */
93 size_t download_fp_total;
94 char download_desired_section[128];
97 char upl_path[PATH_MAX];
98 char upl_comment[256];
99 char upl_filedir[PATH_MAX];
100 char upl_mimetype[64];
102 struct ctdluser user; /* Database record buffers */
103 struct ctdlroom room;
105 /* A linked list of all instant messages sent to us. */
106 struct ExpressMessage *FirstExpressMessage;
107 int disable_exp; /* Set to 1 to disable incoming pages */
108 int newmail; /* Other sessions increment this */
110 /* Preferred MIME formats */
111 char preferred_formats[256];
112 int msg4_dont_decode;
114 /* Dynamically allocated session data */
115 void *session_specific_data; /* Used by individual protocol modules */
116 struct cit_ical *CIT_ICAL; /* calendaring data */
117 struct ma_info *ma; /* multipart/alternative data */
118 const char *ServiceName; /* readable purpose of this session */
120 char *ldap_dn; /* DN of user when using AUTHMODE_LDAP */
122 void (*h_command_function) (void) ; /* service command function */
123 void (*h_async_function) (void) ; /* do async msgs function */
124 void (*h_greeting_function) (void) ; /* greeting function for session startup */
126 long *cached_msglist; /* results of the previous CtdlForEachMessage() */
129 char vcard_updated_by_ldap; /* !0 iff ldap changed the vcard, treat as aide update */
132 #define CC MyContext()
134 extern pthread_key_t MyConKey; /* TSD key for MyContext() */
135 extern int num_sessions;
136 extern CitContext masterCC;
137 extern CitContext *ContextList;
139 CitContext *MyContext (void);
140 void RemoveContext (struct CitContext *);
141 CitContext *CreateNewContext (void);
142 void context_cleanup(void);
143 void kill_session (int session_to_kill);
144 void InitializeMasterCC(void);
145 void dead_session_purge(int force);
146 void set_async_waiting(struct CitContext *ccptr);
148 CitContext *CloneContext(CitContext *CloneMe);
150 /* forcibly close and flush fd's on shutdown */
151 void terminate_all_sessions(void);
153 void terminate_idle_sessions(void);
154 int CtdlTerminateOtherSession (int session_num);
155 /* bits returned by CtdlTerminateOtherSession */
156 #define TERM_FOUND 0x01
157 #define TERM_ALLOWED 0x02
158 #define TERM_KILLED 0x03
159 #define TERM_NOTALLOWED -1
162 * Bind a thread to a context. (It's inline merely to speed things up.)
164 static INLINE void become_session(CitContext *which_con) {
165 pthread_setspecific(MyConKey, (void *)which_con );
168 #endif /* CONTEXT_H */