337 lines
9.7 KiB
C
337 lines
9.7 KiB
C
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/*
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* This file is part of uudeview, the simple and friendly multi-part multi-
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* file uudecoder program (c) 1994 by Frank Pilhofer. The author may be
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* contacted by his email address, fp@informatik.uni-frankfurt.de
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __UUINT_H__
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#define __UUINT_H__
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/*
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* This file describes the internal structures, variables and definitions
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* of UUDeview. It should not be included from other packages. Subject to
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* change without notice. Do not depend on anything here.
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*
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* $Id$
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*/
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#ifndef _ANSI_ARGS_
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#ifdef PROTOTYPES
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#define _ANSI_ARGS_(c) c
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#else
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#define _ANSI_ARGS_(c) ()
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#endif
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#endif
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/*
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* Busy Polls will be made after processing ... lines
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*/
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#define BUSY_LINE_TICKS 50
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/*
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* States of MIME scanner
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*/
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#define MS_HEADERS 1 /* still inside of headers */
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#define MS_BODY 2 /* body of `simple' messages */
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#define MS_PREAMBLE 3 /* preamble of Multipart/Mixed */
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#define MS_SUBPART 4 /* within one of the Multiparts */
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#define MS_EPILOGUE 5 /* epilogue of Multipart/Mixed */
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/*
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* Number of subsequent encoded lines we require to believe this
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* is valid data.
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*/
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#define ELC_COUNT 4
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/*
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* Flags a part may have. FL_PROPER means that we are sure about the file's
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* encoding, beginning and end, and don't have to use special care when de-
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* coding.
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*/
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#define FL_NONE 0 /* no flag, just plain normal */
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#define FL_SINGLE 1 /* standalone MSG, do not mix */
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#define FL_PARTIAL 2 /* from Message/Partial */
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#define FL_PROPER 4 /* proper MIME part */
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#define FL_TOEND 8 /* part continues to EOF */
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/*
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* Auxiliary macro: compute the percentage of a against b.
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* The obvious answer is (100*a)/b, but this overflows for large a.
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* a/(b/100) is better; we use a/((b/100)+1) so that we don't divide
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* by zero for b<100 and the result doesn't become larger than 100%
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*/
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#define UUPERCENT(a,b) ((int) ((unsigned long)(a) / \
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(((unsigned long)(b)/100)+1)))
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/*
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* Make the Busy Callback easier. The macro returns true if the BusyCallback
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* wants us to terminate.
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*/
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extern unsigned long uuyctr;
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#define UUBUSYPOLL(a,b) (((++uuyctr%BUSY_LINE_TICKS)==0) ? (progress.percent=UUPERCENT((a),(b)),UUBusyPoll()):0)
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/*
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* How many lines of headers do we need to believe another mail
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* header is approaching? Use more restrictive values for MIME
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* mails, less restrictive for Freestyle
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*/
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typedef struct {
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int restart; /* restarting after a MIME body (not subpart) */
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int afterdata; /* after we had useful data in freestyle mode */
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int afternl; /* after an empty line in freestyle mode */
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} headercount;
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extern headercount hlcount;
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/*
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* Information from the headers of a message. Each instance must
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* have its very own copy of the strings. If `mimevers' is NULL,
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* then this message does not comply to the MIME standard.
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*/
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typedef struct _headers {
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char *from; /* From: */
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char *subject; /* Subject: */
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char *rcpt; /* To: */
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char *date; /* Date: */
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char *mimevers; /* MIME-Version: */
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char *ctype; /* Content-Type: */
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char *ctenc; /* Content-Transfer-Encoding: */
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char *fname; /* Potential Filename from Content-Type Parameter */
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char *boundary; /* MIME-Boundary from Content-Type Parameter */
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char *mimeid; /* MIME-Id for Message/Partial */
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int partno; /* part number for Message/Partial */
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int numparts; /* number of parts for Message/Partial */
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} headers;
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/*
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* Scanner state
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*/
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typedef struct _scanstate {
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int isfolder; /* if we think this is a valid email folder */
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int ismime; /* if we are within a valid MIME message */
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int mimestate; /* state of MIME scanner */
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int mimeenc; /* encoding of this MIME file */
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char *source; /* source filename */
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headers envelope; /* mail envelope headers */
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} scanstate;
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/*
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* Structure that holds the information for a single file / part of
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* a file. If a subject line is encountered, it is copied to subject;
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* if a begin is found, the mode and name of the file is extracted.
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* flags are set if 'begin' or 'end' is detected and 'uudet' if valid
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* uuencoded data is found. If the file contains a 'From:' line with
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* a '@' in it (indicating an origin email address), it is preserved
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* in 'origin'.
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**/
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typedef struct _fileread {
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char *subject; /* Whole subject line */
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char *filename; /* Only filled in if begin detected */
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char *origin; /* Whole 'From:' line */
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char *mimeid; /* the ID for Mime-encoded files */
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char *mimetype; /* Content-Type */
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short mode; /* Mode of File (from 'begin') */
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int begin; /* begin detected */
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int end; /* end detected */
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int flags; /* associated flags */
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short uudet; /* valid encoded data. value indicates encoding */
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short partno; /* Mime-files have a part number within */
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short maxpno; /* ... plus the total number of parts */
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char *sfname; /* Associated source file */
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long startpos; /* ftell() position where data starts */
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long length; /* length of data */
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} fileread;
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/*
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* Structure for holding one part of a file, with some more information
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* about it. The UUPreProcessPart() function takes one a fileread structure
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* and produces this uufile structure.
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* Linked List, ordered by partno.
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**/
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typedef struct _uufile {
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char *filename;
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char *subfname;
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char *mimeid;
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char *mimetype;
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short partno;
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fileread *data;
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struct _uufile *NEXT;
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} uufile;
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extern void *uu_MsgCBArg;
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extern void *uu_BusyCBArg;
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extern void *uu_FileCBArg;
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extern void *uu_FFCBArg;
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/*
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* variables
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*/
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extern int uu_fast_scanning;
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extern int uu_bracket_policy;
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extern int uu_verbose;
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extern int uu_desperate;
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extern int uu_ignreply;
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extern int uu_debug;
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extern int uu_errno;
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extern int uu_dumbness;
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extern int uu_overwrite;
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extern int uu_ignmode;
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extern int uu_headercount;
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extern int uu_usepreamble;
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extern int uu_handletext;
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extern int uu_tinyb64;
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extern char *uusavepath;
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extern char *uuencodeext;
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/*
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* Encoding/Decoding tables
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*/
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extern unsigned char UUEncodeTable[];
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extern unsigned char XXEncodeTable[];
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extern unsigned char B64EncodeTable[];
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extern unsigned char BHEncodeTable[];
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/*
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* String tables from uustring.c
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*/
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extern char *msgnames[];
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extern char *codenames[];
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extern char *uuretcodes[];
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extern uulist *UUGlobalFileList;
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/*
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* State of MIME variables and current progress
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*/
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extern int nofnum, mssdepth;
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extern int mimseqno, lastvalid;
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extern int lastenc;
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extern scanstate multistack[];
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extern headers localenv;
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extern scanstate sstate;
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extern uuprogress progress;
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/*
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* mallocable areas
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*/
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extern char *uugen_fnbuffer, *uugen_inbuffer;
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extern char *uucheck_lastname, *uucheck_tempname;
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extern char *uuestr_itemp, *uuestr_otemp;
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extern char *uulib_msgstring, *uuncdl_fulline;
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extern char *uuncdp_oline, *uuscan_shlline;
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extern char *uuscan_pvvalue, *uuscan_phtext;
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extern char *uuscan_sdline, *uuscan_sdbhds1;
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extern char *uuscan_sdbhds2, *uuscan_spline;
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extern char *uuutil_bhwtmp;
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extern char *uunconc_UUxlat, *uunconc_UUxlen;
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extern char *uunconc_B64xlat, *uunconc_XXxlat;
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extern char *uunconc_BHxlat, *uunconc_save;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void (*uu_MsgCallback) _ANSI_ARGS_((void *, char *, int));
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extern int (*uu_BusyCallback) _ANSI_ARGS_((void *, uuprogress *));
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extern int (*uu_FileCallback) _ANSI_ARGS_((void *, char *, char *, int));
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extern char * (*uu_FNameFilter) _ANSI_ARGS_((void *, char *));
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/*
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* Functions from uulib.c that aren't defined in <uudeview.h>
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* Be careful about the definition with variable arguments.
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*/
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#if defined(STDC_HEADERS) || defined(HAVE_STDARG_H)
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int UUMessage _ANSI_ARGS_((char *, int,
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int, char *, ...));
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#else
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int UUMessage ();
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#endif
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int UUBusyPoll _ANSI_ARGS_((void));
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/*
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* Functions from uucheck.c
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*/
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uufile * UUPreProcessPart _ANSI_ARGS_((fileread *, int *));
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int UUInsertPartToList _ANSI_ARGS_((uufile *));
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uulist * UUCheckGlobalList _ANSI_ARGS_((void));
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/*
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* Functions from uuutil.c
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*/
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void UUkillfread _ANSI_ARGS_((fileread *));
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void UUkillfile _ANSI_ARGS_((uufile *));
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void UUkilllist _ANSI_ARGS_((uulist *));
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void UUkillheaders _ANSI_ARGS_((headers *));
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fileread * ScanPart _ANSI_ARGS_((FILE *, char *, int *));
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int UUbhdecomp _ANSI_ARGS_((char *, char *,
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char *, int *,
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size_t, size_t,
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size_t *));
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size_t UUbhwrite _ANSI_ARGS_((char *, size_t, size_t,
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FILE *));
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/*
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* Functions from uunconc.c
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*/
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int UURepairData _ANSI_ARGS_((FILE *, char *,
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int, int *));
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void UUInitConc _ANSI_ARGS_((void));
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int UUValidData _ANSI_ARGS_((char *, int, int *));
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size_t UUDecodeLine _ANSI_ARGS_((char *, char *, int));
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int UUDecodePart _ANSI_ARGS_((FILE *, FILE *, int *,
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long, int, int, char *));
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int UUDecode _ANSI_ARGS_((uulist *));
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/*
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* Message retrieval from uustring.c
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*/
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char * uustring _ANSI_ARGS_((int));
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/*
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* From uuscan.c
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*/
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int UUScanHeader _ANSI_ARGS_((FILE *, headers *));
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#ifdef __cplusplus
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}
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#endif
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#endif
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