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__

#include <stdio.h>

#include "uudeview.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.
 */

#if COMPILE_SEPERATELY
#define UULIBINT_VAR extern
#define UULIBINT_FUNC
#else
#define UULIBINT_VAR extern
#define UULIBINT_FUNC static
#endif

/*
 * 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.
 */

UULIBINT_VAR 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;

UULIBINT_VAR 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;

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

/*
 * variables
 */

UULIBINT_VAR int uu_autocheck;
UULIBINT_VAR int uu_rbuf;
UULIBINT_VAR 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)

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

UULIBINT_VAR char *uusavepath;
UULIBINT_VAR char *uuencodeext;

/*
 * Encoding/Decoding tables
 */

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

/*
 * String tables from uustring.c
 */

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

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

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

/*
 * mallocable areas
 */

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

#ifdef __cplusplus
extern "C" {
#endif

/*
 * 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__ * 16 + level, __VA_ARGS__)
UULIBINT_FUNC int       UUMessage_              (const char *, int, const char *, ...);
UULIBINT_FUNC int       UUBusyPoll              (void);

/*
 * Functions from uucheck.c
 */

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

/*
 * Functions from uuutil.c
 */

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

UULIBINT_FUNC fileread *UUScanPart              (FILE *, char *, int *);

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

/*
 * Functions from uunconc.c
 */

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

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

/*
 * Message retrieval from uustring.c
 */

UULIBINT_FUNC char *    uustring                (int);

/*
 * From uuscan.c
 */

UULIBINT_FUNC int       UUScanHeader            (FILE *, headers *);

#ifdef __cplusplus
}
#endif
#endif
Revision:	1.17
Committed:	Sat Sep 24 10:55:42 2022 UTC (19 months, 3 weeks ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.16:	+14 -10 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* This file is part of uudeview, the simple and friendly multi-part multi-
3	* file uudecoder program (c) 1994-2001 by Frank Pilhofer. The author may
4	* be contacted at fp@fpx.de
5	*
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	#include <stdio.h>
21
22	#include "uudeview.h"
23
24	/*
25	* This file describes the internal structures, variables and definitions
26	* of UUDeview. It should not be included from other packages. Subject to
27	* change without notice. Do not depend on anything here.
28	*/
29
30	#if COMPILE_SEPERATELY
31	#define UULIBINT_VAR extern
32	#define UULIBINT_FUNC
33	#else
34	#define UULIBINT_VAR extern
35	#define UULIBINT_FUNC static
36	#endif
37
38	/*
39	* Busy Polls will be made after processing ... lines
40	*/
41
42	#define BUSY_LINE_TICKS 50
43
44	/*
45	* States of MIME scanner
46	*/
47
48	#define MS_HEADERS 1 /* still inside of headers */
49	#define MS_BODY 2 /* body of `simple' messages */
50	#define MS_PREAMBLE 3 /* preamble of Multipart/Mixed */
51	#define MS_SUBPART 4 /* within one of the Multiparts */
52	#define MS_EPILOGUE 5 /* epilogue of Multipart/Mixed */
53
54	/*
55	* Number of subsequent encoded lines we require to believe this
56	* is valid data.
57	*/
58
59	#define ELC_COUNT 4
60
61	/*
62	* Flags a part may have. FL_PROPER means that we are sure about the file's
63	* encoding, beginning and end, and don't have to use special care when de-
64	* coding.
65	*/
66
67	#define FL_NONE 0 /* no flag, just plain normal */
68	#define FL_SINGLE 1 /* standalone MSG, do not mix */
69	#define FL_PARTIAL 2 /* from Message/Partial */
70	#define FL_PROPER 4 /* proper MIME part */
71	#define FL_TOEND 8 /* part continues to EOF */
72
73	/*
74	* Auxiliary macro: compute the percentage of a against b.
75	* The obvious answer is (100*a)/b, but this overflows for large a.
76	* a/(b/100) is better; we use a/((b/100)+1) so that we don't divide
77	* by zero for b<100 and the result doesn't become larger than 100%
78	*/
79
80	#define UUPERCENT(a,b) ((int) ((unsigned long)(a) / \
81	(((unsigned long)(b)/100)+1)))
82
83	/*
84	* Make the Busy Callback easier. The macro returns true if the BusyCallback
85	* wants us to terminate.
86	*/
87
88	UULIBINT_VAR unsigned long uuyctr;
89	#define UUBUSYPOLL(a,b) (((++uuyctr%BUSY_LINE_TICKS)==0) ? (progress.percent=UUPERCENT((a),(b)),UUBusyPoll()):0)
90
91	/*
92	* How many lines of headers do we need to believe another mail
93	* header is approaching? Use more restrictive values for MIME
94	* mails, less restrictive for Freestyle
95	*/
96
97	typedef struct {
98	int restart; /* restarting after a MIME body (not subpart) */
99	int afterdata; /* after we had useful data in freestyle mode */
100	int afternl; /* after an empty line in freestyle mode */
101	} headercount;
102
103	UULIBINT_VAR headercount hlcount;
104
105	/*
106	* Information from the headers of a message. Each instance must
107	* have its very own copy of the strings. If `mimevers' is NULL,
108	* then this message does not comply to the MIME standard.
109	*/
110
111	typedef struct _headers {
112	char from; / From: */
113	char subject; / Subject: */
114	char rcpt; / To: */
115	char date; / Date: */
116	char mimevers; / MIME-Version: */
117	char ctype; / Content-Type: */
118	char ctenc; / Content-Transfer-Encoding: */
119	char fname; / Potential Filename from Content-Type Parameter */
120	char boundary; / MIME-Boundary from Content-Type Parameter */
121	char mimeid; / MIME-Id for Message/Partial */
122	int partno; /* part number for Message/Partial */
123	int numparts; /* number of parts for Message/Partial */
124	} headers;
125
126	/*
127	* Scanner state
128	*/
129
130	typedef struct _scanstate {
131	int isfolder; /* if we think this is a valid email folder */
132	int ismime; /* if we are within a valid MIME message */
133	int mimestate; /* state of MIME scanner */
134	int mimeenc; /* encoding of this MIME file */
135	char source; / source filename */
136	headers envelope; /* mail envelope headers */
137	} scanstate;
138
139	UULIBINT_VAR void *uu_MsgCBArg;
140	UULIBINT_VAR void *uu_BusyCBArg;
141	UULIBINT_VAR void *uu_FileCBArg;
142	UULIBINT_VAR void *uu_FFCBArg;
143	UULIBINT_VAR void *uu_FNCBArg;
144
145	/*
146	* variables
147	*/
148
149	UULIBINT_VAR int uu_autocheck;
150	UULIBINT_VAR int uu_rbuf;
151	UULIBINT_VAR int uu_wbuf;
152	#define UUSETBUF(fp,buff,size) if (size) setvbuf ((fp), ((buff) = malloc (size)), _IOFBF, (size))
153	#define UUCLRBUF(size,buff) if (size) free (buff)
154
155	UULIBINT_VAR int uu_fast_scanning;
156	UULIBINT_VAR int uu_bracket_policy;
157	UULIBINT_VAR int uu_verbose;
158	UULIBINT_VAR int uu_desperate;
159	UULIBINT_VAR int uu_ignreply;
160	UULIBINT_VAR int uu_debug;
161	UULIBINT_VAR int uu_errno;
162	UULIBINT_VAR int uu_dumbness;
163	UULIBINT_VAR int uu_overwrite;
164	UULIBINT_VAR int uu_ignmode;
165	UULIBINT_VAR int uu_headercount;
166	UULIBINT_VAR int uu_usepreamble;
167	UULIBINT_VAR int uu_handletext;
168	UULIBINT_VAR int uu_tinyb64;
169	UULIBINT_VAR int uu_remove_input;
170	UULIBINT_VAR int uu_more_mime;
171	UULIBINT_VAR int uu_dotdot;
172
173	UULIBINT_VAR char *uusavepath;
174	UULIBINT_VAR char *uuencodeext;
175
176	/*
177	* Encoding/Decoding tables
178	*/
179
180	UULIBINT_VAR unsigned char UUEncodeTable[];
181	UULIBINT_VAR unsigned char XXEncodeTable[];
182	UULIBINT_VAR unsigned char B64EncodeTable[];
183	UULIBINT_VAR unsigned char BHEncodeTable[];
184
185	/*
186	* String tables from uustring.c
187	*/
188
189	UULIBINT_VAR char *msgnames[];
190	UULIBINT_VAR char *codenames[];
191	UULIBINT_VAR char *uuretcodes[];
192
193	/*
194	* State of MIME variables and current progress
195	*/
196
197	UULIBINT_VAR int nofnum, mssdepth;
198	UULIBINT_VAR int mimseqno, lastvalid;
199	UULIBINT_VAR int lastenc;
200	UULIBINT_VAR scanstate multistack[];
201	UULIBINT_VAR headers localenv;
202	UULIBINT_VAR scanstate sstate;
203	UULIBINT_VAR uuprogress progress;
204
205	/*
206	* mallocable areas
207	*/
208
209	UULIBINT_VAR char uugen_fnbuffer, uugen_inbuffer;
210	UULIBINT_VAR char uucheck_lastname, uucheck_tempname;
211	UULIBINT_VAR char uuestr_itemp, uuestr_otemp;
212	UULIBINT_VAR char uulib_msgstring, uuncdl_fulline;
213	UULIBINT_VAR char uuncdp_oline, uuscan_shlline, *uuscan_shlline2;
214	UULIBINT_VAR char uuscan_pvvalue, uuscan_phtext;
215	UULIBINT_VAR char uuscan_sdline, uuscan_sdbhds1;
216	UULIBINT_VAR char uuscan_sdbhds2, uuscan_spline;
217	UULIBINT_VAR char *uuutil_bhwtmp;
218	UULIBINT_VAR char uunconc_UUxlat, uunconc_UUxlen;
219	UULIBINT_VAR char uunconc_B64xlat, uunconc_XXxlat;
220	UULIBINT_VAR char uunconc_BHxlat, uunconc_save;
221
222	#ifdef __cplusplus
223	extern "C" {
224	#endif
225
226	/*
227	* Functions from uulib.c that aren't defined in <uudeview.h>
228	* Be careful about the definition with variable arguments.
229	*/
230
231	#define UUMessage(level, ...) UUMessage_ (__FILE__, __LINE__ * 16 + level, __VA_ARGS__)
232	UULIBINT_FUNC int UUMessage_ (const char , int, const char , ...);
233	UULIBINT_FUNC int UUBusyPoll (void);
234
235	/*
236	* Functions from uucheck.c
237	*/
238
239	UULIBINT_FUNC uufile * UUPreProcessPart (fileread , int );
240	UULIBINT_FUNC int UUInsertPartToList (uufile *);
241
242	/*
243	* Functions from uuutil.c
244	*/
245
246	UULIBINT_FUNC void UUkillfread (fileread *);
247	UULIBINT_FUNC void UUkillfile (uufile *);
248	UULIBINT_FUNC void UUkilllist (uulist *);
249	UULIBINT_FUNC void UUkillheaders (headers *);
250
251	UULIBINT_FUNC fileread UUScanPart (FILE , char , int );
252
253	UULIBINT_FUNC int UUbhdecomp (char , char ,
254	char , int ,
255	size_t, size_t,
256	size_t *);
257	UULIBINT_FUNC size_t UUbhwrite (char , size_t, size_t, FILE );
258
259	/*
260	* Functions from uunconc.c
261	*/
262
263	UULIBINT_FUNC int UURepairData (FILE , char , int, int *);
264
265	UULIBINT_FUNC void UUInitConc (void);
266	UULIBINT_FUNC int UUValidData (char , int, int );
267	UULIBINT_FUNC size_t UUDecodeLine (char , char , int);
268	UULIBINT_FUNC int UUDecodeField (char , char , int);
269	UULIBINT_FUNC int UUDecodePart (FILE , FILE , int *,
270	long, int, int, char *);
271	UULIBINT_FUNC int UUDecode (uulist *);
272
273	/*
274	* Message retrieval from uustring.c
275	*/
276
277	UULIBINT_FUNC char * uustring (int);
278
279	/*
280	* From uuscan.c
281	*/
282
283	UULIBINT_FUNC int UUScanHeader (FILE , headers );
284
285	#ifdef __cplusplus
286	}
287	#endif
288	#endif