Occasionally, a server will become incorrectly configured or will
start behaving incorrectly.  Even more rarely, a server will be
compromised, and a modified version of the server put in place to
cause problems.  These cases are the reason for the _jupe_, a
temporary server ban.  This is similar to the G-line, which is a
temporary user ban, and indeed, the jupe API is very similar to the
G-line API.

<macro>
#define JUPE_MAX_EXPIRE	604800	/* max expire: 7 days */

This macro lists the maximum expire time a jupe is permitted to have.
This value is limited to 7 days to prevent abuse of the system.
</macro>

<macro>
#define JUPE_ACTIVE	0x0001

This flag is used to indicate that a given jupe is globally active.
</macro>

<macro>
#define JUPE_LOCAL	0x0002

This flag is used to indicate that a given jupe is a local one.  Local
jupes do not affect users on other servers.
</macro>

<macro>
#define JUPE_LDEACT	0x0004	/* locally deactivated */

This flag is set on global jupes that have been locally deactivated.
This flag is maintained internally by the jupe subsystem.
</macro>

<struct>
struct Jupe;

The struct Jupe describes everything about a given jupe.  None of its
fields may be directly accessed by the application; use the functions
and macros described below instead.
</struct>

<function>
int JupeIsActive(struct Jupe* j);

This macro returns a non-zero value if the jupe is active, or 0
otherwise.  If a jupe is locally deactivated, this macro will always
return 0.
</function>

<function>
int JupeIsRemActive(struct Jupe* j);

This macro returns a non-zero value if the jupe is active, ignoring
whether or not it is locally deactivated.
</function>

<function>
int JupeIsLocal(struct Jupe* j);

This macro returns a non-zero value if the jupe is local only.
</function>

<function>
char* JupeServer(struct Jupe* j);

This macro returns the server name associated with the jupe.
</function>

<function>
char* JupeReason(struct Jupe* j);

This macro returns the reason that was given when the jupe was set.
</function>

<function>
time_t JupeLastMod(struct Jupe* j);

Jupes have a modification time that must be monotonically increasing.
This macro simply returns that modification time.
</function>

<function>
int jupe_add(struct Client *cptr, struct Client *sptr, char *server,
	     char *reason, time_t expire, time_t lastmod, unsigned int flags);

This function simply adds a jupe, set by _sptr_ and with a _server_,
_reason_, _expire_, and _lastmod_ as specified.  The _flags_ parameter
is a bit mask consisting of the binary OR of JUPE_LOCAL and
JUPE_ACTIVE, as appropriate.  The jupe_add() function will propagate
the jupe to all servers (assuming JUPE_LOCAL was not passed), and will
break its link to the server specified by _server_ (assuming that the
JUPE_ACTIVE flag _was_ passed).
</function>

<function>
int jupe_activate(struct Client *cptr, struct Client *sptr, struct Jupe *jupe,
		  time_t lastmod, unsigned int flags);

This function activates the jupe specified by _jupe_, setting its
_lastmod_ time as specified.  If _flags_ is JUPE_LOCAL and if the jupe
is locally deactivated, this function will turn off the local
deactivation flag, but will not modify _lastmod_.  If the jupe is
globally deactivated, passing this function the JUPE_LOCAL flag will
have no effect.
</function>

<function>
int jupe_deactivate(struct Client *cptr, struct Client *sptr,
		    struct Jupe *jupe, time_t lastmod, unsigned int flags);

This function is similar to jupe_activate() except that it deactivates
the jupe.  If the given jupe is local, then the jupe is deleted from
memory.  In all other cases, the jupe is simply deactivated, either
locally (if JUPE_LOCAL was passed via _flags_) or globally.  Global
deactivation will update the _lastmod_ time.
</function>

<function>
struct Jupe* jupe_find(char *server);

This function searches for a jupe matching the given _server_.
</function>

<function>
void jupe_free(struct Jupe *jupe);

This function releases all storage associated with a given jupe.
</function>

<function>
void jupe_burst(struct Client *cptr);

This function generates a burst of all existing global jupes and sends
them to the server specified by _cptr_.
</function>

<function>
int jupe_resend(struct Client *cptr, struct Jupe *jupe);

This function resends the _jupe_ to a server specified by _cptr_.
This may be used if, for instance, it is discovered that a server is
not synchronized with respect to a particular jupe.
</function>

<function>
int jupe_list(struct Client *sptr, char *server);

This function sends the information about a jupe matching _server_ to
the client specified by _sptr_.  If _server_ is a NULL pointer, a list
of all jupes is sent.
</function>

<authors>
Kev <klmitch@mit.edu>
</authors>

<changelog>
[2001-6-15 Kev] Initial documentation of the jupe API.
</changelog>