8 #include "sysdep_decls.h"
13 * Values for CitContext.state
15 * A session that is doing nothing is in CON_IDLE state. When activity
16 * is detected on the socket, it goes to CON_READY, indicating that it
17 * needs to have a worker thread bound to it. When a thread binds to
18 * the session, it goes to CON_EXECUTING and does its thing. When the
19 * transaction is finished, the thread sets it back to CON_IDLE and lets
22 typedef enum __CCState {
23 CON_IDLE, /* This context is doing nothing */
24 CON_GREETING, /* This context needs to output its greeting */
25 CON_STARTING, /* This context is outputting its greeting */
26 CON_READY, /* This context needs attention */
27 CON_EXECUTING, /* This context is bound to a thread */
28 CON_SYS /* This is a system context and mustn't be purged */
33 * Here's the big one... the Citadel context structure.
35 * This structure keeps track of all information relating to a running
36 * session on the server. We keep one of these for each session thread.
40 struct CitContext *prev; /* Link to previous session in list */
41 struct CitContext *next; /* Link to next session in the list */
43 int cs_pid; /* session ID */
44 int dont_term; /* for special activities like artv so we don't get killed */
45 time_t lastcmd; /* time of last command executed */
46 time_t lastidle; /* For computing idle time */
47 CCState state; /* thread state (see CON_ values below) */
48 int kill_me; /* Set to nonzero to flag for termination */
50 IOBuffer SendBuf, /* Our write Buffer */
51 RecvBuf, /* Our block buffered read buffer */
52 SBuf; /* Our block buffered read buffer for clients */
54 StrBuf *MigrateBuf; /* Our block buffered read buffer */
55 StrBuf *sMigrateBuf; /* Our block buffered read buffer */
58 int is_local_socket; /* set to 1 if client is on unix domain sock */
59 /* Redirect this session's output to a memory buffer? */
60 StrBuf *redirect_buffer; /* the buffer */
66 char curr_user[USERNAME_SIZE]; /* name of current user */
67 int logged_in; /* logged in */
68 int internal_pgm; /* authenticated as internal program */
69 int nologin; /* not allowed to log in */
70 int curr_view; /* The view type for the current user/room */
71 int is_master; /* Is this session logged in using the master user? */
73 char net_node[32] ;/* Is the client another Citadel server? */
74 time_t previous_login; /* Date/time of previous login */
75 char lastcmdname[5]; /* name of last command executed */
76 unsigned cs_flags; /* miscellaneous flags */
77 int is_async; /* Nonzero if client accepts async msgs */
78 int async_waiting; /* Nonzero if there are async msgs waiting */
79 int input_waiting; /* Nonzero if there is client input waiting */
80 int can_receive_im; /* Session is capable of receiving instant messages */
82 /* Client information */
83 int cs_clientdev; /* client developer ID */
84 int cs_clienttyp; /* client type code */
85 int cs_clientver; /* client version number */
86 char cs_clientinfo[256];/* if its a unix domain socket, some info for logging. */
87 uid_t cs_UDSclientUID; /* the uid of the client when talking via UDS */
88 char cs_clientname[32]; /* name of client software */
89 char cs_host[64]; /* host logged in from */
90 char cs_addr[64]; /* address logged in from */
92 /* The Internet type of thing */
93 char cs_inet_email[128]; /* Return address of outbound Internet mail */
94 char cs_inet_other_emails[1024]; /* User's other valid Internet email addresses */
95 char cs_inet_fn[128]; /* Friendly-name of outbound Internet mail */
97 FILE *download_fp; /* Fields relating to file transfer */
98 size_t download_fp_total;
99 char download_desired_section[128];
102 char upl_path[PATH_MAX];
103 char upl_comment[256];
104 char upl_filedir[PATH_MAX];
105 char upl_mimetype[64];
109 struct ctdluser user; /* Database record buffers */
110 struct ctdlroom room;
112 /* Beginning of cryptography - session nonce */
113 char cs_nonce[NONCE_SIZE]; /* The nonce for this session's next auth transaction */
116 /* A linked list of all instant messages sent to us. */
117 struct ExpressMessage *FirstExpressMessage;
118 int disable_exp; /* Set to 1 to disable incoming pages */
119 int newmail; /* Other sessions increment this */
121 /* Masqueraded values in the 'who is online' list */
122 char fake_username[USERNAME_SIZE];
123 char fake_hostname[64];
124 char fake_roomname[ROOMNAMELEN];
126 /* Preferred MIME formats */
127 char preferred_formats[256];
128 int msg4_dont_decode;
130 /* Dynamically allocated session data */
131 char *session_specific_data; /* Used by individual protocol modules */
132 struct cit_ical *CIT_ICAL; /* calendaring data */
133 struct ma_info *ma; /* multipart/alternative data */
134 const char *ServiceName; /* readable purpose of this session */
135 void *openid_data; /* Data stored by the OpenID module */
136 char *ldap_dn; /* DN of user when using AUTHMODE_LDAP */
139 void (*h_command_function) (void) ; /* service command function */
140 void (*h_async_function) (void) ; /* do async msgs function */
141 void (*h_greeting_function) (void) ; /* greeting function for session startup */
144 typedef struct CitContext CitContext;
147 #define CC MyContext()
150 extern citthread_key_t MyConKey; /* TSD key for MyContext() */
151 extern int num_sessions;
152 extern CitContext masterCC;
153 extern CitContext *ContextList;
155 CitContext *MyContext (void);
156 void RemoveContext (struct CitContext *);
157 CitContext *CreateNewContext (void);
158 void context_cleanup(void);
159 void kill_session (int session_to_kill);
160 void InitializeMasterCC(void);
161 void dead_session_purge(int force);
162 void set_async_waiting(struct CitContext *ccptr);
164 CitContext *CloneContext(CitContext *CloneMe);
166 /* forcibly close and flush fd's on shutdown */
167 void terminate_stuck_sessions(void);
169 /* Deprecated, user CtdlBumpNewMailCounter() instead */
170 void BumpNewMailCounter(long) __attribute__ ((deprecated));
172 void terminate_idle_sessions(void);
173 int CtdlTerminateOtherSession (int session_num);
174 /* bits returned by CtdlTerminateOtherSession */
175 #define TERM_FOUND 0x01
176 #define TERM_ALLOWED 0x02
177 #define TERM_KILLED 0x03
178 #define TERM_NOTALLOWED -1
181 * Bind a thread to a context. (It's inline merely to speed things up.)
183 static INLINE void become_session(CitContext *which_con) {
185 pid_t tid = syscall(SYS_gettid);
187 citthread_setspecific(MyConKey, (void *)which_con );
189 CtdlLogPrintf(CTDL_DEBUG, "[%d]: Now doing %s\n",
191 ((which_con != NULL) && (which_con->ServiceName != NULL)) ?
192 which_con->ServiceName:"");
197 #endif /* CONTEXT_H */