Convert-UUlib/uulib/uuint.h

/*
 * This file is part of uudeview, the simple and friendly multi-part multi-
 * file uudecoder  program  (c) 1994-2001 by Frank Pilhofer. The author may
 * be contacted at fp@fpx.de
 *
 * 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.
 */

#ifndef __UUINT_H__
#define __UUINT_H__

/*
 * This file describes the internal structures, variables and definitions
 * of UUDeview. It should not be included from other packages. Subject to
 * change without notice. Do not depend on anything here.
 */

/*
 * Busy Polls will be made after processing ... lines
 */

#define BUSY_LINE_TICKS         50

/*
 * States of MIME scanner
 */

#define MS_HEADERS      1       /* still inside of headers      */
#define MS_BODY         2       /* body of `simple' messages    */
#define MS_PREAMBLE     3       /* preamble of Multipart/Mixed  */
#define MS_SUBPART      4       /* within one of the Multiparts */
#define MS_EPILOGUE     5       /* epilogue of Multipart/Mixed  */

/*
 * Number of subsequent encoded lines we require to believe this
 * is valid data.
 */

#define ELC_COUNT       4

/*
 * Flags a part may have. FL_PROPER means that we are sure about the file's
 * encoding, beginning and end, and don't have to use special care when de-
 * coding.
 */

#define FL_NONE         0       /* no flag, just plain normal   */
#define FL_SINGLE       1       /* standalone MSG, do not mix   */
#define FL_PARTIAL      2       /* from Message/Partial         */
#define FL_PROPER       4       /* proper MIME part             */
#define FL_TOEND        8       /* part continues to EOF        */

/*
 * Auxiliary macro: compute the percentage of a against b.
 * The obvious answer is (100*a)/b, but this overflows for large a.
 * a/(b/100) is better; we use a/((b/100)+1) so that we don't divide
 * by zero for b<100 and the result doesn't become larger than 100%
 */

#define UUPERCENT(a,b)  ((int) ((unsigned long)(a) / \
                                (((unsigned long)(b)/100)+1)))

/*
 * Make the Busy Callback easier. The macro returns true if the BusyCallback
 * wants us to terminate.
 */

extern unsigned long uuyctr;
#define UUBUSYPOLL(a,b) (((++uuyctr%BUSY_LINE_TICKS)==0) ? (progress.percent=UUPERCENT((a),(b)),UUBusyPoll()):0)

/*
 * How many lines of headers do we need to believe another mail
 * header is approaching? Use more restrictive values for MIME
 * mails, less restrictive for Freestyle
 */

typedef struct {
  int restart;          /* restarting after a MIME body (not subpart) */
  int afterdata;        /* after we had useful data in freestyle mode */
  int afternl;          /* after an empty line in freestyle mode      */
} headercount;

extern headercount hlcount;

/*
 * Information from the headers of a message. Each instance must
 * have its very own copy of the strings. If `mimevers' is NULL,
 * then this message does not comply to the MIME standard.
 */

typedef struct _headers {
  char *from;           /* From:                                          */
  char *subject;        /* Subject:                                       */
  char *rcpt;           /* To:                                            */
  char *date;           /* Date:                                          */
  char *mimevers;       /* MIME-Version:                                  */
  char *ctype;          /* Content-Type:                                  */
  char *ctenc;          /* Content-Transfer-Encoding:                     */
  char *fname;          /* Potential Filename from Content-Type Parameter */
  char *boundary;       /* MIME-Boundary from Content-Type Parameter      */
  char *mimeid;         /* MIME-Id for Message/Partial                    */
  int partno;           /* part number for Message/Partial                */
  int numparts;         /* number of parts for Message/Partial            */
} headers;

/*
 * Scanner state
 */

typedef struct _scanstate {
  int isfolder;         /* if we think this is a valid email folder       */
  int ismime;           /* if we are within a valid MIME message          */
  int mimestate;        /* state of MIME scanner                          */
  int mimeenc;          /* encoding of this MIME file                     */
  char *source;         /* source filename                                */
  headers envelope;     /* mail envelope headers                          */
} scanstate;

/*
 * Structure that holds the information for a single file / part of
 * a file. If a subject line is encountered, it is copied to subject;
 * if a begin is found, the mode and name of the file is extracted.
 * flags are set if 'begin' or 'end' is detected and 'uudet' if valid
 * uuencoded data is found. If the file contains a 'From:' line with
 * a '@' in it (indicating an origin email address), it is preserved
 * in 'origin'.
 **/

typedef struct _fileread {
  char *subject;        /* Whole subject line */
  char *filename;       /* Only filled in if begin detected */
  char *origin;         /* Whole 'From:' line */
  char *mimeid;         /* the ID for Mime-encoded files */
  char *mimetype;       /* Content-Type */
  int   begin;          /* begin detected */
  int   end;            /* end detected */
  long  yefilesize;     /* the yencode file size, or 0 */

  uint16_t mode;        /* Mode of File (from 'begin') */
  uint8_t flags;        /* associated flags */
  uint8_t uudet;        /* valid encoded data. value indicates encoding */
  int   partno;         /* Mime-files have a part number within */
  int   maxpno;         /* ... plus the total number of parts   */

  char *sfname;         /* Associated source file */
  long startpos;        /* ftell() position where data starts */
  long length;          /* length of data */
} fileread;

/*
 * Structure for holding one part of a file, with some more information
 * about it. The UUPreProcessPart() function takes one a fileread structure
 * and produces this uufile structure.
 * Linked List, ordered by partno.
 **/

typedef struct _uufile {
  struct _uufile *NEXT;
  char     *filename;
  char     *subfname;
  char     *mimeid;
  char     *mimetype;
  fileread *data;
  long      yefilesize;
  int       partno;
} uufile;

extern void *uu_MsgCBArg;
extern void *uu_BusyCBArg;
extern void *uu_FileCBArg;
extern void *uu_FFCBArg;
extern void *uu_FNCBArg;

/*
 * variables
 */

extern int uu_autocheck;
extern int uu_rbuf;
extern int uu_wbuf;
#define UUSETBUF(fp,buff,size) if (size) setvbuf ((fp), ((buff) = malloc (size)), _IOFBF, (size))
#define UUCLRBUF(size,buff) if (size) free (buff)

extern int uu_fast_scanning;
extern int uu_bracket_policy;
extern int uu_verbose;
extern int uu_desperate;
extern int uu_ignreply;
extern int uu_debug;
extern int uu_errno;
extern int uu_dumbness;
extern int uu_overwrite;
extern int uu_ignmode;
extern int uu_headercount;
extern int uu_usepreamble;
extern int uu_handletext;
extern int uu_tinyb64;
extern int uu_remove_input;
extern int uu_more_mime;
extern int uu_dotdot;

extern char *uusavepath;
extern char *uuencodeext;

/*
 * Encoding/Decoding tables
 */

extern unsigned char UUEncodeTable[];
extern unsigned char XXEncodeTable[];
extern unsigned char B64EncodeTable[];
extern unsigned char BHEncodeTable[];

/*
 * String tables from uustring.c
 */

extern char *msgnames[];
extern char *codenames[];
extern char *uuretcodes[];

extern uulist *UUGlobalFileList;

/*
 * State of MIME variables and current progress
 */

extern int nofnum, mssdepth;
extern int mimseqno, lastvalid;
extern int lastenc;
extern scanstate  multistack[];
extern headers    localenv;
extern scanstate  sstate;
extern uuprogress progress;

/*
 * mallocable areas
 */

extern char *uugen_fnbuffer, *uugen_inbuffer;
extern char *uucheck_lastname, *uucheck_tempname;
extern char *uuestr_itemp, *uuestr_otemp;
extern char *uulib_msgstring, *uuncdl_fulline;
extern char *uuncdp_oline, *uuscan_shlline, *uuscan_shlline2;
extern char *uuscan_pvvalue, *uuscan_phtext;
extern char *uuscan_sdline, *uuscan_sdbhds1;
extern char *uuscan_sdbhds2, *uuscan_spline;
extern char *uuutil_bhwtmp;
extern char *uunconc_UUxlat, *uunconc_UUxlen;
extern char *uunconc_B64xlat, *uunconc_XXxlat;
extern char *uunconc_BHxlat, *uunconc_save;

#ifdef __cplusplus
extern "C" {
#endif

extern void   (*uu_MsgCallback)     (void *, char *, int);
extern int    (*uu_BusyCallback)    (void *, uuprogress *);
extern int    (*uu_FileCallback)    (void *, char *, char *, int);
extern char * (*uu_FNameFilter)     (void *, char *);
extern char * (*uu_FileNameCallback)(void *, char *, char *);

/*
 * Functions from uulib.c that aren't defined in <uudeview.h>
 * Be careful about the definition with variable arguments.
 */

#define UUMessage(level, ...) UUMessage_ (__FILE__, __LINE__, level, __VA_ARGS__)
int             UUMessage_              (char *, int, int, char *, ...);
int             UUBusyPoll              (void);

/*
 * Functions from uucheck.c
 */

uufile *        UUPreProcessPart        (fileread *, int *);
int             UUInsertPartToList      (uufile *);

/*
 * Functions from uuutil.c
 */

void            UUkillfread             (fileread *);
void            UUkillfile              (uufile *);
void            UUkilllist              (uulist *);
void            UUkillheaders           (headers *);

fileread *      ScanPart                (FILE *, char *, int *);

int             UUbhdecomp              (char *, char *,
                                         char *, int *,
                                         size_t, size_t,
                                         size_t *);
size_t          UUbhwrite               (char *, size_t, size_t, FILE *);

/*
 * Functions from uunconc.c
 */

int             UURepairData            (FILE *, char *, int, int *);

void            UUInitConc              _ANSI_ARGS_((void));
int             UUValidData             _ANSI_ARGS_((char *, int, int *));
size_t          UUDecodeLine            _ANSI_ARGS_((char *, char *, int));
int             UUDecodeField           _ANSI_ARGS_((char *, char *, int));
int             UUDecodePart            _ANSI_ARGS_((FILE *, FILE *, int *,
                                                     long, int, int, char *));
int             UUDecode                _ANSI_ARGS_((uulist *));

/*
 * Message retrieval from uustring.c
 */

char *          uustring                (int);

/*
 * From uuscan.c
 */

int             UUScanHeader            (FILE *, headers *);

#ifdef __cplusplus
}
#endif
#endif
Revision:	1.15
Committed:	Sat Sep 24 06:25:44 2022 UTC (20 months, 2 weeks ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.14:	+0 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*
2			* This file is part of uudeview, the simple and friendly multi-part multi-
3	root	1.2	* file uudecoder program (c) 1994-2001 by Frank Pilhofer. The author may
4			* be contacted at fp@fpx.de
5	root	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*/
16
17			#ifndef __UUINT_H__
18			#define __UUINT_H__
19
20			/*
21			* This file describes the internal structures, variables and definitions
22			* of UUDeview. It should not be included from other packages. Subject to
23			* change without notice. Do not depend on anything here.
24			*/
25
26			/*
27			* Busy Polls will be made after processing ... lines
28			*/
29
30			#define BUSY_LINE_TICKS 50
31
32			/*
33			* States of MIME scanner
34			*/
35
36			#define MS_HEADERS 1 /* still inside of headers */
37			#define MS_BODY 2 /* body of `simple' messages */
38			#define MS_PREAMBLE 3 /* preamble of Multipart/Mixed */
39			#define MS_SUBPART 4 /* within one of the Multiparts */
40			#define MS_EPILOGUE 5 /* epilogue of Multipart/Mixed */
41
42			/*
43			* Number of subsequent encoded lines we require to believe this
44			* is valid data.
45			*/
46
47			#define ELC_COUNT 4
48
49			/*
50			* Flags a part may have. FL_PROPER means that we are sure about the file's
51			* encoding, beginning and end, and don't have to use special care when de-
52			* coding.
53			*/
54
55			#define FL_NONE 0 /* no flag, just plain normal */
56			#define FL_SINGLE 1 /* standalone MSG, do not mix */
57			#define FL_PARTIAL 2 /* from Message/Partial */
58			#define FL_PROPER 4 /* proper MIME part */
59			#define FL_TOEND 8 /* part continues to EOF */
60
61			/*
62			* Auxiliary macro: compute the percentage of a against b.
63			* The obvious answer is (100*a)/b, but this overflows for large a.
64			* a/(b/100) is better; we use a/((b/100)+1) so that we don't divide
65			* by zero for b<100 and the result doesn't become larger than 100%
66			*/
67
68			#define UUPERCENT(a,b) ((int) ((unsigned long)(a) / \
69			(((unsigned long)(b)/100)+1)))
70	root	1.10
71	root	1.1	/*
72			* Make the Busy Callback easier. The macro returns true if the BusyCallback
73			* wants us to terminate.
74			*/
75
76			extern unsigned long uuyctr;
77			#define UUBUSYPOLL(a,b) (((++uuyctr%BUSY_LINE_TICKS)==0) ? (progress.percent=UUPERCENT((a),(b)),UUBusyPoll()):0)
78
79			/*
80			* How many lines of headers do we need to believe another mail
81			* header is approaching? Use more restrictive values for MIME
82			* mails, less restrictive for Freestyle
83			*/
84
85			typedef struct {
86			int restart; /* restarting after a MIME body (not subpart) */
87			int afterdata; /* after we had useful data in freestyle mode */
88			int afternl; /* after an empty line in freestyle mode */
89			} headercount;
90
91			extern headercount hlcount;
92
93			/*
94			* Information from the headers of a message. Each instance must
95			* have its very own copy of the strings. If `mimevers' is NULL,
96			* then this message does not comply to the MIME standard.
97			*/
98
99			typedef struct _headers {
100			char from; / From: */
101			char subject; / Subject: */
102			char rcpt; / To: */
103			char date; / Date: */
104			char mimevers; / MIME-Version: */
105			char ctype; / Content-Type: */
106			char ctenc; / Content-Transfer-Encoding: */
107			char fname; / Potential Filename from Content-Type Parameter */
108			char boundary; / MIME-Boundary from Content-Type Parameter */
109			char mimeid; / MIME-Id for Message/Partial */
110			int partno; /* part number for Message/Partial */
111			int numparts; /* number of parts for Message/Partial */
112			} headers;
113
114			/*
115			* Scanner state
116			*/
117
118			typedef struct _scanstate {
119			int isfolder; /* if we think this is a valid email folder */
120			int ismime; /* if we are within a valid MIME message */
121			int mimestate; /* state of MIME scanner */
122			int mimeenc; /* encoding of this MIME file */
123			char source; / source filename */
124			headers envelope; /* mail envelope headers */
125			} scanstate;
126
127			/*
128			* Structure that holds the information for a single file / part of
129			* a file. If a subject line is encountered, it is copied to subject;
130			* if a begin is found, the mode and name of the file is extracted.
131			* flags are set if 'begin' or 'end' is detected and 'uudet' if valid
132			* uuencoded data is found. If the file contains a 'From:' line with
133			* a '@' in it (indicating an origin email address), it is preserved
134			* in 'origin'.
135			**/
136
137			typedef struct _fileread {
138			char subject; / Whole subject line */
139			char filename; / Only filled in if begin detected */
140			char origin; / Whole 'From:' line */
141			char mimeid; / the ID for Mime-encoded files */
142			char mimetype; / Content-Type */
143			int begin; /* begin detected */
144			int end; /* end detected */
145	root	1.8	long yefilesize; /* the yencode file size, or 0 */
146	root	1.1
147	root	1.11	uint16_t mode; /* Mode of File (from 'begin') */
148			uint8_t flags; /* associated flags */
149			uint8_t uudet; /* valid encoded data. value indicates encoding */
150	root	1.8	int partno; /* Mime-files have a part number within */
151			int maxpno; /* ... plus the total number of parts */
152	root	1.1
153			char sfname; / Associated source file */
154			long startpos; /* ftell() position where data starts */
155			long length; /* length of data */
156			} fileread;
157
158			/*
159			* Structure for holding one part of a file, with some more information
160			* about it. The UUPreProcessPart() function takes one a fileread structure
161			* and produces this uufile structure.
162			* Linked List, ordered by partno.
163			**/
164
165			typedef struct _uufile {
166	root	1.12	struct _uufile *NEXT;
167	root	1.1	char *filename;
168			char *subfname;
169			char *mimeid;
170			char *mimetype;
171			fileread *data;
172	root	1.8	long yefilesize;
173	root	1.12	int partno;
174	root	1.1	} uufile;
175
176			extern void *uu_MsgCBArg;
177			extern void *uu_BusyCBArg;
178			extern void *uu_FileCBArg;
179			extern void *uu_FFCBArg;
180	root	1.4	extern void *uu_FNCBArg;
181	root	1.1
182			/*
183			* variables
184			*/
185
186	root	1.9	extern int uu_autocheck;
187	root	1.7	extern int uu_rbuf;
188			extern int uu_wbuf;
189			#define UUSETBUF(fp,buff,size) if (size) setvbuf ((fp), ((buff) = malloc (size)), _IOFBF, (size))
190			#define UUCLRBUF(size,buff) if (size) free (buff)
191
192	root	1.1	extern int uu_fast_scanning;
193			extern int uu_bracket_policy;
194			extern int uu_verbose;
195			extern int uu_desperate;
196			extern int uu_ignreply;
197			extern int uu_debug;
198			extern int uu_errno;
199			extern int uu_dumbness;
200			extern int uu_overwrite;
201			extern int uu_ignmode;
202			extern int uu_headercount;
203			extern int uu_usepreamble;
204			extern int uu_handletext;
205			extern int uu_tinyb64;
206	root	1.2	extern int uu_remove_input;
207			extern int uu_more_mime;
208	root	1.5	extern int uu_dotdot;
209	root	1.1
210			extern char *uusavepath;
211			extern char *uuencodeext;
212
213			/*
214			* Encoding/Decoding tables
215			*/
216
217			extern unsigned char UUEncodeTable[];
218			extern unsigned char XXEncodeTable[];
219			extern unsigned char B64EncodeTable[];
220			extern unsigned char BHEncodeTable[];
221
222			/*
223			* String tables from uustring.c
224			*/
225
226			extern char *msgnames[];
227			extern char *codenames[];
228			extern char *uuretcodes[];
229
230			extern uulist *UUGlobalFileList;
231
232			/*
233			* State of MIME variables and current progress
234			*/
235
236			extern int nofnum, mssdepth;
237			extern int mimseqno, lastvalid;
238			extern int lastenc;
239			extern scanstate multistack[];
240			extern headers localenv;
241			extern scanstate sstate;
242			extern uuprogress progress;
243
244			/*
245			* mallocable areas
246			*/
247
248			extern char uugen_fnbuffer, uugen_inbuffer;
249			extern char uucheck_lastname, uucheck_tempname;
250			extern char uuestr_itemp, uuestr_otemp;
251			extern char uulib_msgstring, uuncdl_fulline;
252	root	1.6	extern char uuncdp_oline, uuscan_shlline, *uuscan_shlline2;
253	root	1.1	extern char uuscan_pvvalue, uuscan_phtext;
254			extern char uuscan_sdline, uuscan_sdbhds1;
255			extern char uuscan_sdbhds2, uuscan_spline;
256			extern char *uuutil_bhwtmp;
257			extern char uunconc_UUxlat, uunconc_UUxlen;
258			extern char uunconc_B64xlat, uunconc_XXxlat;
259			extern char uunconc_BHxlat, uunconc_save;
260
261			#ifdef __cplusplus
262			extern "C" {
263			#endif
264
265	root	1.4	extern void (uu_MsgCallback) (void , char *, int);
266			extern int (uu_BusyCallback) (void , uuprogress *);
267			extern int (uu_FileCallback) (void , char , char , int);
268			extern char * (uu_FNameFilter) (void , char *);
269			extern char * (uu_FileNameCallback)(void , char , char );
270	root	1.1
271			/*
272			* Functions from uulib.c that aren't defined in <uudeview.h>
273			* Be careful about the definition with variable arguments.
274			*/
275
276	root	1.14	#define UUMessage(level, ...) UUMessage_ (__FILE__, __LINE__, level, __VA_ARGS__)
277	root	1.13	int UUMessage_ (char , int, int, char , ...);
278	root	1.1	int UUBusyPoll (void);
279
280			/*
281			* Functions from uucheck.c
282			*/
283
284			uufile * UUPreProcessPart (fileread , int );
285	root	1.13	int UUInsertPartToList (uufile *);
286	root	1.1
287			/*
288			* Functions from uuutil.c
289			*/
290
291	root	1.13	void UUkillfread (fileread *);
292			void UUkillfile (uufile *);
293			void UUkilllist (uulist *);
294			void UUkillheaders (headers *);
295	root	1.1
296	root	1.13	fileread * ScanPart (FILE , char , int *);
297	root	1.1
298			int UUbhdecomp (char , char ,
299			char , int ,
300	root	1.10	size_t, size_t,
301	root	1.1	size_t *);
302			size_t UUbhwrite (char , size_t, size_t, FILE );
303
304			/*
305			* Functions from uunconc.c
306			*/
307
308			int UURepairData (FILE , char , int, int *);
309
310	root	1.13	void UUInitConc _ANSI_ARGS_((void));
311			int UUValidData _ANSI_ARGS_((char , int, int ));
312			size_t UUDecodeLine _ANSI_ARGS_((char , char , int));
313	root	1.6	int UUDecodeField _ANSI_ARGS_((char , char , int));
314			int UUDecodePart _ANSI_ARGS_((FILE , FILE , int *,
315			long, int, int, char *));
316	root	1.13	int UUDecode _ANSI_ARGS_((uulist *));
317	root	1.1
318			/*
319			* Message retrieval from uustring.c
320			*/
321
322			char * uustring (int);
323
324			/*
325			* From uuscan.c
326			*/
327
328			int UUScanHeader (FILE , headers );
329
330			#ifdef __cplusplus
331			}
332			#endif
333			#endif