251 lines
10 KiB
C
251 lines
10 KiB
C
|
/* prot.h
|
||
|
|
Protocol header file.
|
||
|
|
|
||
|
|
Copyright (C) 1991, 1992 Ian Lance Taylor
|
||
|
|
|
||
|
|
This file is part of the Taylor UUCP package.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 of the
|
||
|
|
License, or (at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful, but
|
||
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
The author of the program may be contacted at ian@airs.com or
|
||
|
|
c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* We need the definition of uuconf_cmdtab to declare the protocol
|
||
|
|
parameter arrays. */
|
||
|
|
#ifndef UUCONF_H
|
||
|
|
#include "uuconf.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if ANSI_C
|
||
|
|
/* These structures are used in prototypes but are not defined in this
|
||
|
|
header file. */
|
||
|
|
struct sdaemon;
|
||
|
|
struct sconnection;
|
||
|
|
struct stransfer;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* The sprotocol structure holds information and functions for a specific
|
||
|
|
protocol (e.g. the 'g' protocol). */
|
||
|
|
|
||
|
|
struct sprotocol
|
||
|
|
{
|
||
|
|
/* The name of the protocol (e.g. 'g'). */
|
||
|
|
char bname;
|
||
|
|
/* Reliability requirements, an or of UUCONF_RELIABLE_xxx defines
|
||
|
|
from uuconf.h. */
|
||
|
|
int ireliable;
|
||
|
|
/* The maximum number of channels this protocol can support. */
|
||
|
|
int cchans;
|
||
|
|
/* Protocol parameter commands. */
|
||
|
|
struct uuconf_cmdtab *qcmds;
|
||
|
|
/* A routine to start the protocol. If *pzlog is set to be
|
||
|
|
non-NULL, it is an informative message to be logged; it should
|
||
|
|
then be passed to ubuffree. */
|
||
|
|
boolean (*pfstart) P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
/* Shutdown the protocol. */
|
||
|
|
boolean (*pfshutdown) P((struct sdaemon *qdaemon));
|
||
|
|
/* Send a command to the other side. */
|
||
|
|
boolean (*pfsendcmd) P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
/* Get buffer to space to fill with data. This should set *pcdata
|
||
|
|
to the amount of data desired. */
|
||
|
|
char *(*pzgetspace) P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
/* Send data to the other side. The argument z must be a return
|
||
|
|
value of pzgetspace. The ipos argument is the file position, and
|
||
|
|
is ignored by most protocols. */
|
||
|
|
boolean (*pfsenddata) P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
/* Wait for data to come in and call fgot_data with it until
|
||
|
|
fgot_data sets *pfexit. */
|
||
|
|
boolean (*pfwait) P((struct sdaemon *qdaemon));
|
||
|
|
/* Handle any file level actions that need to be taken. If a file
|
||
|
|
transfer is starting rather than ending, fstart is TRUE. If the
|
||
|
|
file is being sent rather than received, fsend is TRUE. If
|
||
|
|
fstart and fsend are both TRUE, cbytes holds the size of the
|
||
|
|
file. If *pfhandled is set to TRUE, then the protocol routine
|
||
|
|
has taken care of queueing up qtrans for the next action. */
|
||
|
|
boolean (*pffile) P((struct sdaemon *qdaemon, struct stransfer *qtrans,
|
||
|
|
boolean fstart, boolean fsend, long cbytes,
|
||
|
|
boolean *pfhandled));
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Send data to the other system. If the fread argument is TRUE, this
|
||
|
|
will also receive data into the receive buffer abPrecbuf; fread is
|
||
|
|
passed as TRUE if the protocol expects data to be coming back, to
|
||
|
|
make sure the input buffer does not fill up. Returns FALSE on
|
||
|
|
error. */
|
||
|
|
extern boolean fsend_data P((struct sconnection *qconn,
|
||
|
|
const char *zsend, size_t csend,
|
||
|
|
boolean fdoread));
|
||
|
|
|
||
|
|
/* Receive data from the other system when there is no data to send.
|
||
|
|
The cneed argument is the amount of data desired and the ctimeout
|
||
|
|
argument is the timeout in seconds. This will set *pcrec to the
|
||
|
|
amount of data received. It will return FALSE on error. If a
|
||
|
|
timeout occurs, it will return TRUE with *pcrec set to zero. */
|
||
|
|
extern boolean freceive_data P((struct sconnection *qconn, size_t cneed,
|
||
|
|
size_t *pcrec, int ctimeout,
|
||
|
|
boolean freport));
|
||
|
|
|
||
|
|
/* Get one character from the remote system, going through the
|
||
|
|
procotol buffering. The ctimeout argument is the timeout in
|
||
|
|
seconds, and the freport argument is TRUE if errors should be
|
||
|
|
reported (when closing a connection it is pointless to report
|
||
|
|
errors). This returns a character or -1 on a timeout or -2 on an
|
||
|
|
error. */
|
||
|
|
extern int breceive_char P((struct sconnection *qconn,
|
||
|
|
int ctimeout, boolean freport));
|
||
|
|
|
||
|
|
/* Compute a 32 bit CRC of a data buffer, given an initial CRC. */
|
||
|
|
extern unsigned long icrc P((const char *z, size_t c, unsigned long ick));
|
||
|
|
|
||
|
|
/* The initial CRC value to use for a new buffer. */
|
||
|
|
#if ANSI_C
|
||
|
|
#define ICRCINIT (0xffffffffUL)
|
||
|
|
#else
|
||
|
|
#define ICRCINIT ((unsigned long) 0xffffffffL)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* The size of the receive buffer. */
|
||
|
|
#define CRECBUFLEN (16384)
|
||
|
|
|
||
|
|
/* Buffer to hold received data. */
|
||
|
|
extern char abPrecbuf[CRECBUFLEN];
|
||
|
|
|
||
|
|
/* Index of start of data in abPrecbuf. */
|
||
|
|
extern int iPrecstart;
|
||
|
|
|
||
|
|
/* Index of end of data (first byte not included in data) in abPrecbuf. */
|
||
|
|
extern int iPrecend;
|
||
|
|
|
||
|
|
/* There are a couple of variables and functions that are shared by
|
||
|
|
the 'i' and 'j' protocols (the 'j' protocol is just a wrapper
|
||
|
|
around the 'i' protocol). These belong in a separate header file,
|
||
|
|
protij.h, but I don't want to create one for just a couple of
|
||
|
|
things. */
|
||
|
|
|
||
|
|
/* An escape sequence of characters for the 'j' protocol to avoid
|
||
|
|
(protocol parameter ``avoid''). */
|
||
|
|
extern const char *zJavoid_parameter;
|
||
|
|
|
||
|
|
/* Timeout to use when sending the 'i' protocol SYNC packet (protocol
|
||
|
|
parameter ``sync-timeout''). */
|
||
|
|
extern int cIsync_timeout;
|
||
|
|
|
||
|
|
/* Shared startup routine for the 'i' and 'j' protocols. */
|
||
|
|
extern boolean fijstart P((struct sdaemon *qdaemon, char **pzlog,
|
||
|
|
int imaxpacksize,
|
||
|
|
boolean (*pfsend) P((struct sconnection *qconn,
|
||
|
|
const char *zsend,
|
||
|
|
size_t csend,
|
||
|
|
boolean fdoread)),
|
||
|
|
boolean (*pfreceive) P((struct sconnection *qconn,
|
||
|
|
size_t cneed,
|
||
|
|
size_t *pcrec,
|
||
|
|
int ctimeout,
|
||
|
|
boolean freport))));
|
||
|
|
|
||
|
|
/* Prototypes for 'g' protocol functions. */
|
||
|
|
|
||
|
|
extern struct uuconf_cmdtab asGproto_params[];
|
||
|
|
extern boolean fgstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean fbiggstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean fgshutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fgsendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *zggetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean fgsenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean fgwait P((struct sdaemon *qdaemon));
|
||
|
|
|
||
|
|
/* Prototypes for 'f' protocol functions. */
|
||
|
|
|
||
|
|
extern struct uuconf_cmdtab asFproto_params[];
|
||
|
|
extern boolean ffstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean ffshutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean ffsendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *zfgetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean ffsenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean ffwait P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fffile P((struct sdaemon *qdaemon, struct stransfer *qtrans,
|
||
|
|
boolean fstart, boolean fsend, long cbytes,
|
||
|
|
boolean *pfhandled));
|
||
|
|
|
||
|
|
/* Prototypes for 't' protocol functions. */
|
||
|
|
|
||
|
|
extern struct uuconf_cmdtab asTproto_params[];
|
||
|
|
extern boolean ftstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean ftshutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean ftsendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *ztgetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean ftsenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean ftwait P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean ftfile P((struct sdaemon *qdaemon, struct stransfer *qtrans,
|
||
|
|
boolean fstart, boolean fsend, long cbytes,
|
||
|
|
boolean *pfhandled));
|
||
|
|
|
||
|
|
/* Prototypes for 'e' protocol functions. */
|
||
|
|
|
||
|
|
extern struct uuconf_cmdtab asEproto_params[];
|
||
|
|
extern boolean festart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean feshutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fesendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *zegetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean fesenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean fewait P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fefile P((struct sdaemon *qdaemon, struct stransfer *qtrans,
|
||
|
|
boolean fstart, boolean fsend, long cbytes,
|
||
|
|
boolean *pfhandled));
|
||
|
|
|
||
|
|
/* Prototypes for 'i' protocol functions. */
|
||
|
|
|
||
|
|
extern struct uuconf_cmdtab asIproto_params[];
|
||
|
|
extern boolean fistart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean fishutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fisendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *zigetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean fisenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean fiwait P((struct sdaemon *qdaemon));
|
||
|
|
|
||
|
|
/* Prototypes for 'j' protocol functions. The 'j' protocol mostly
|
||
|
|
uses the 'i' protocol functions, but it has a couple of functions
|
||
|
|
of its own. */
|
||
|
|
extern boolean fjstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean fjshutdown P((struct sdaemon *qdaemon));
|
||
|
|
|
||
|
|
/* Prototypes for 'a' protocol functions (these use 'z' as the second
|
||
|
|
character because 'a' is a modified Zmodem protocol). */
|
||
|
|
extern struct uuconf_cmdtab asZproto_params[];
|
||
|
|
extern boolean fzstart P((struct sdaemon *qdaemon, char **pzlog));
|
||
|
|
extern boolean fzshutdown P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fzsendcmd P((struct sdaemon *qdaemon, const char *z,
|
||
|
|
int ilocal, int iremote));
|
||
|
|
extern char *zzgetspace P((struct sdaemon *qdaemon, size_t *pcdata));
|
||
|
|
extern boolean fzsenddata P((struct sdaemon *qdaemon, char *z, size_t c,
|
||
|
|
int ilocal, int iremote, long ipos));
|
||
|
|
extern boolean fzwait P((struct sdaemon *qdaemon));
|
||
|
|
extern boolean fzfile P((struct sdaemon *qdaemon, struct stransfer *qtrans,
|
||
|
|
boolean fstart, boolean fsend, long cbytes,
|
||
|
|
boolean *pfhandled));
|