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deb-goldedplus/goldlib/uulib/uucheck.c
Alexander S. Aganichev 5932b8817b GoldED+ sources: Initial revision.
2000-02-25 10:15:17 +00:00

1469 lines
36 KiB
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/*
* This file is part of uudeview, the simple and friendly multi-part multi-
* file uudecoder program (c) 1994 by Frank Pilhofer. The author may be
* contacted by his email address, fp@informatik.uni-frankfurt.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef SYSTEM_WINDLL
#include <windows.h>
#endif
#ifdef SYSTEM_OS2
#include <os2.h>
#endif
/*
* uucheck.c
*
* Various checking and processing of one input part
**/
#include <stdio.h>
#include <ctype.h>
#ifdef STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#include <uudeview.h>
#include <uuint.h>
#include <fptools.h>
#include <uustring.h>
char * uucheck_id = "$Id$";
/*
* Arbitrary number. This is the maximum number of part numbers we
* store for our have-parts and missing-parts lists
*/
#define MAXPLIST 256
/*
* forward declarations of local functions
*/
static char * UUGetFileName _ANSI_ARGS_((char *, char *, char *));
static int UUGetPartNo _ANSI_ARGS_((char *, char **, char **));
/*
* State of Scanner function and PreProcessPart
*/
int lastvalid, lastenc, nofnum;
char *uucheck_lastname;
char *uucheck_tempname;
static int lastpart = 0;
static char *nofname = "UNKNOWN";
/*
* special characters we allow an unquoted filename to have
*/
static char *fnchars = "._-~!";
/*
* Policy for extracting a part number from the subject line.
* usually, look for part numbers in () brackets first, then in []
*/
static char *brackchr[] = {
"()[]", "[]()"
};
/*
* Extract a filename from the subject line. We need anything to identify
* the name of the program for sorting. If a nice filename cannot be found,
* the subject line itself is used
* ptonum is, if not NULL, a pointer to the part number in the subject line,
* so that it won't be used as filename.
**/
static char *
UUGetFileName (char *subject, char *ptonum, char *ptonend)
{
char *ptr = subject, *iter, *result, *part;
int count, length=0, alflag=0;
/*
* If this file has no subject line, assume it is the next part of the
* previous file (this is done in UUPreProcessPart)
**/
if (subject == NULL)
return NULL;
/*
* If the subject starts with 'Re', it is ignored
* REPosts or RETries are not ignored!
**/
if (uu_ignreply &&
(subject[0] == 'R' || subject[0] == 'r') &&
(subject[1] == 'E' || subject[1] == 'e') &&
(subject[2] == ':' || subject[2] == ' ')) {
return NULL;
}
/*
* Ignore a "Repost" prefix of the subject line. We don't want to get
* a file named "Repost" :-)
**/
if (_FP_strnicmp (subject, "repost", 6) == 0)
subject += 6;
if (_FP_strnicmp (subject, "re:", 3) == 0)
subject += 3;
while (*subject == ' ' || *subject == ':') subject++;
part = _FP_stristr (subject, "part");
if (part == subject) {
subject += 4;
while (*subject == ' ') subject++;
}
/*
* If the file was encoded by uuenview, then the filename is enclosed
* in [brackets]. But check what's inside these bracket's, try not to
* fall for something other than a filename
*/
ptr = subject;
while ((iter = strchr (ptr, '[')) != NULL) {
if (strchr (iter, ']') == NULL) {
ptr = iter + 1;
continue;
}
iter++;
while (isspace (*iter))
iter++;
count = length = alflag = 0;
while (iter[count] &&
(isalnum (iter[count]) || strchr (fnchars, iter[count])!=NULL)) {
if (isalpha (iter[count]))
alflag++;
count++;
}
if (count<4 || alflag==0) {
ptr = iter + 1;
continue;
}
length = count;
while (isspace (iter[count]))
count++;
if (iter[count] == ']') {
ptr = iter;
break;
}
length = 0;
ptr = iter + 1;
}
/*
* new filename detection routine, fists mostly for files by ftp-by-email
* servers that create subject lines with ftp.host.address:/full/path/file
* on them. We look for slashes and take the filename from after the last
* one ... or at least we try to.
*/
if (length == 0) {
ptr = subject;
while ((iter = strchr (ptr, '/')) != NULL) {
if (iter >= ptonum && iter <= ptonend) {
ptr = iter + 1;
continue;
}
count = length = 0;
iter++;
while (iter[count] &&
(isalnum(iter[count])||strchr(fnchars, iter[count])!=NULL))
count++;
if (iter[count] == ' ' && length > 4) {
length = count;
break;
}
ptr = iter + ((count)?count:1);
}
}
/*
* Look for two alphanumeric strings separated by a '.'
* (That's most likely a filename)
**/
if (length == 0) {
ptr = subject;
while (*ptr && *ptr != 0x0a && *ptr != 0x0d && ptr != part) {
iter = ptr;
count = length = alflag = 0;
if (_FP_strnicmp (ptr, "ftp", 3) == 0) {
/* hey, that's an ftp address */
while (isalpha (*ptr) || isdigit (*ptr) || *ptr == '.')
ptr++;
continue;
}
while ((isalnum(*iter)||strchr(fnchars, *iter)!=NULL||
*iter=='/') && *iter && iter != ptonum && *iter != '.') {
if (isalpha (*iter))
alflag = 1;
count++; iter++;
}
if (*iter == '\0' || iter == ptonum) {
if (iter == ptonum)
ptr = ptonend;
else
ptr = iter;
length = 0;
continue;
}
if (*iter++ != '.' || count > 32 || alflag == 0) {
ptr = iter;
length = 0;
continue;
}
if (_FP_strnicmp (iter, "edu", 3) == 0 ||
_FP_strnicmp (iter, "gov", 3) == 0) {
/* hey, that's an ftp address */
while (isalpha (*iter) || isdigit (*iter) || *iter == '.')
iter++;
ptr = iter;
length = 0;
continue;
}
length += count + 1;
count = 0;
while ((isalnum(iter[count])||strchr(fnchars, iter[count])!=NULL||
iter[count]=='/') && iter[count] && iter[count] != '.')
count++;
if (iter[count]==':' && iter[count+1]=='/') {
/* looks like stuff from a mail server */
ptr = iter + 1;
length = 0;
continue;
}
if (count > 8 || iter == ptonum) {
ptr = iter;
length = 0;
continue;
}
if (iter[count] != '.') {
length += count;
break;
}
while (iter[count] &&
(isalnum(iter[count])||strchr(fnchars, iter[count])!=NULL||
iter[count]=='/'))
count++;
if (iter[count]==':' && iter[count+1]=='/') {
/* looks like stuff from a mail server */
ptr = iter + 1;
length = 0;
continue;
}
if (count < 12 && iter != ptonum) {
length += count;
break;
}
ptr = iter;
length = 0;
}
}
if (length == 0) { /* No filename found, use subject line for ident */
ptr = subject;
while (*ptr && !isalpha (*ptr))
ptr++;
while ((isalnum(ptr[length])||strchr(fnchars,ptr[length])!=NULL||
ptr[length] == '/') &&
ptr[length] && ptr+length!=part && ptr+length!=ptonum)
length++;
if (length) {
if (ptr[length] == '\0' || ptr[length] == 0x0a || ptr[length] == 0x0d) {
length--;
/*
* I used to cut off digits from the end of the string, but
* let's try to live without. We want to distinguish
* DUTCH951 from DUTCH952
*
* while ((ptr[length] == ' ' || isdigit (ptr[length])) && length > 0)
* length--;
*/
}
else {
length--;
while (ptr[length] == ' ' && length > 0)
length--;
}
length++;
}
}
if (length == 0) { /* Still found nothing? We need *something*! */
ptr = nofname;
length = strlen (nofname);
}
if ((result = (char *) malloc (length + 1)) == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY), length+1);
return NULL;
}
memcpy (result, ptr, length);
result[length] = '\0';
return result;
}
/*
* Extract the Part Number from the subject line.
* We look first for numbers in (#/#)'s, then for numbers in [#/#]'s
* and then for digits that are not part of a string.
* If we cannot find anything, assume it is the next part of the
* previous file.
* If we find a part number, we put a pointer to it in *where. This is
* done so that the UUGetFileName function doesn't accidentally use the
* part number as the file name. *whend points to the end of this part
* number.
**/
static int
UUGetPartNo (char *subject, char **where, char **whend)
{
char *ptr = subject, *iter, *delim, bdel[2]=" ";
int count, length=0, bpc;
*where = NULL; bdel[0] = ' ';
*whend = NULL; bdel[1] = '\0';
iter = NULL;
delim = "";
if (subject == NULL)
return -1;
if (uu_ignreply &&
(subject[0] == 'R' || subject[0] == 'r') && /* Ignore replies, but not */
(subject[1] == 'E' || subject[1] == 'e') && /* reposts */
(subject[2] == ':' || subject[2] == ' '))
return -2;
/*
* First try numbers in () or [] (or vice versa, according to bracket
* policy)
*/
for (bpc=0, length=0; brackchr[uu_bracket_policy][bpc]; bpc+=2) {
ptr = subject;
while ((iter = strchr (ptr, brackchr[uu_bracket_policy][bpc])) != NULL) {
count = length = 0; iter++;
while (*iter == ' ' || *iter == '#')
iter++;
if (!isdigit (*iter)) {
ptr = iter;
continue;
}
while (isdigit (iter[count]))
count++;
length = count;
if (iter[count] == '\0' || iter[count+1] == '\0') {
iter += count;
length = 0;
break;
}
if (iter[count] == brackchr[uu_bracket_policy][bpc+1]) {
*where = iter;
bdel[0] = brackchr[uu_bracket_policy][bpc+1];
delim = bdel;
break;
}
while (iter[count] == ' ' || iter[count] == '#' ||
iter[count] == '/' || iter[count] == '\\') count++;
if (_FP_strnicmp (iter + count, "of", 2) == 0)
count += 2;
while (iter[count] == ' ') count++;
while (isdigit (iter[count])) count++;
while (iter[count] == ' ') count++;
if (iter[count] == brackchr[uu_bracket_policy][bpc+1]) {
*where = iter;
bdel[0] = brackchr[uu_bracket_policy][bpc+1];
delim = bdel;
break;
}
length = 0;
ptr = iter;
}
if (length)
break;
}
/*
* look for the string "part " followed by a number
*/
if (length == 0) {
if ((iter = _FP_stristr (subject, "part ")) != NULL) {
iter += 5;
while (isspace (*iter) || *iter == '.' || *iter == '-')
iter++;
while (isdigit (iter[length]))
length++;
if (length == 0) {
if (_FP_strnicmp (iter, "one", 3) == 0) length = 1;
else if (_FP_strnicmp (iter, "two", 3) == 0) length = 2;
else if (_FP_strnicmp (iter, "three", 5) == 0) length = 3;
else if (_FP_strnicmp (iter, "four", 4) == 0) length = 4;
else if (_FP_strnicmp (iter, "five", 4) == 0) length = 5;
else if (_FP_strnicmp (iter, "six", 3) == 0) length = 6;
else if (_FP_strnicmp (iter, "seven", 5) == 0) length = 7;
else if (_FP_strnicmp (iter, "eight", 5) == 0) length = 8;
else if (_FP_strnicmp (iter, "nine", 4) == 0) length = 9;
else if (_FP_strnicmp (iter, "ten", 3) == 0) length = 10;
if (length && (*whend = strchr (iter, ' '))) {
*where = iter;
return length;
}
else
length = 0;
}
else {
*where = iter;
delim = "of";
}
}
}
/*
* look for the string "part" followed by a number
*/
if (length == 0) {
if ((iter = _FP_stristr (subject, "part")) != NULL) {
iter += 4;
while (isspace (*iter) || *iter == '.' || *iter == '-')
iter++;
while (isdigit (iter[length]))
length++;
if (length == 0) {
if (_FP_strnicmp (iter, "one", 3) == 0) length = 1;
else if (_FP_strnicmp (iter, "two", 3) == 0) length = 2;
else if (_FP_strnicmp (iter, "three", 5) == 0) length = 3;
else if (_FP_strnicmp (iter, "four", 4) == 0) length = 4;
else if (_FP_strnicmp (iter, "five", 4) == 0) length = 5;
else if (_FP_strnicmp (iter, "six", 3) == 0) length = 6;
else if (_FP_strnicmp (iter, "seven", 5) == 0) length = 7;
else if (_FP_strnicmp (iter, "eight", 5) == 0) length = 8;
else if (_FP_strnicmp (iter, "nine", 4) == 0) length = 9;
else if (_FP_strnicmp (iter, "ten", 3) == 0) length = 10;
if (length && (*whend = strchr (iter, ' '))) {
*where = iter;
return length;
}
else
length = 0;
}
else {
*where = iter;
delim = "of";
}
}
}
/*
* look for [0-9]* "of" [0-9]*
*/
if (length == 0) {
if ((iter = _FP_strirstr (subject, "of")) != NULL) {
while (iter>subject && isspace (*(iter-1)))
iter--;
if (isdigit(*(iter-1))) {
while (iter>subject && isdigit (*(iter-1)))
iter--;
if (!isdigit (*iter) && !isalpha (*iter) && *iter != '.')
iter++;
ptr = iter;
while (isdigit (*ptr)) {
ptr++; length++;
}
*where = iter;
delim = "of";
}
}
}
/*
* look for whitespace-separated (or '/'-separated) digits
*/
if (length == 0) {
ptr = subject;
while (*ptr && length==0) {
while (*ptr && !isdigit (*ptr))
ptr++;
if (isdigit (*ptr) && (ptr==subject || *ptr==' ' || *ptr=='/')) {
while (isdigit (ptr[length]))
length++;
if (ptr[length]!='\0' && ptr[length]!=' ' && ptr[length]!='/') {
ptr += length;
length = 0;
}
else {
iter = ptr;
bdel[0] = ptr[length];
delim = bdel;
}
}
else {
while (isdigit (*ptr))
ptr++;
}
}
}
/*
* look for _any_ digits -- currently disabled, because it also fell
* for "part numbers" in file names
*/
#if 0
if (length == 0) {
count = strlen(subject) - 1;
ptr = subject;
while (count > 0) {
if (!isdigit(ptr[count])||isalpha(ptr[count+1])||ptr[count+1] == '.') {
count--;
continue;
}
length = 0;
while (count >= 0 && isdigit (ptr[count])) {
count--; length++;
}
if (count>=0 && ((isalpha (ptr[count]) &&
(ptr[count] != 's' || ptr[count+1] != 't') &&
(ptr[count] != 'n' || ptr[count+1] != 'd')) ||
ptr[count] == '/' || ptr[count] == '.' ||
ptr[count] == '-' || ptr[count] == '_')) {
length = 0;
continue;
}
count++;
iter = ptr + count;
if (length > 4) {
length = 0;
continue;
}
*where = iter;
delim = "of";
break;
}
}
#endif
/*
* look for part numbering as string
*/
if (length == 0) {
/*
* some people use the strangest things, including spelling mistakes :-)
*/
if ((iter = _FP_stristr (subject, "first")) != NULL) length = 1;
else if ((iter = _FP_stristr (subject, "second")) != NULL) length = 2;
else if ((iter = _FP_stristr (subject, "third")) != NULL) length = 3;
else if ((iter = _FP_stristr (subject, "forth")) != NULL) length = 4;
else if ((iter = _FP_stristr (subject, "fourth")) != NULL) length = 4;
else if ((iter = _FP_stristr (subject, "fifth")) != NULL) length = 5;
else if ((iter = _FP_stristr (subject, "sixth")) != NULL) length = 6;
else if ((iter = _FP_stristr (subject, "seventh")) != NULL) length = 7;
else if ((iter = _FP_stristr (subject, "eigth")) != NULL) length = 8;
else if ((iter = _FP_stristr (subject, "nineth")) != NULL) length = 9;
else if ((iter = _FP_stristr (subject, "ninth")) != NULL) length = 9;
else if ((iter = _FP_stristr (subject, "tenth")) != NULL) length = 10;
else iter = NULL;
if (length && iter && (*whend = strchr (iter, ' '))) {
*where = iter;
return length;
}
else
length = 0;
}
if (iter == NULL || length == 0) /* should be equivalent */
return -1;
*where = iter;
if (delim && delim[0]) {
if ((*whend=_FP_stristr (iter, delim)) != NULL && (*whend - *where) < 12) {
ptr = (*whend += strlen (delim));
while (*ptr == ' ')
ptr++;
if (isdigit (*ptr)) {
*whend = ptr;
while (isdigit (**whend))
*whend += 1;
}
}
else {
*whend = iter + length;
}
}
else {
*whend = iter + length;
}
return atoi (iter);
}
/*
* Obtain and process some information about the data.
**/
uufile *
UUPreProcessPart (fileread *data, int *ret)
{
char *where, *whend, temp[80], *ptr, *p2;
uufile *result;
if ((result = (uufile *) malloc (sizeof (uufile))) == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY), sizeof (uufile));
*ret = UURET_NOMEM;
return NULL;
}
memset (result, 0, sizeof (uufile));
if (data->partno) {
where = whend = NULL;
result->partno = data->partno;
}
else if (uu_dumbness) {
result->partno = -1;
where = whend = NULL;
}
else if ((result->partno=UUGetPartNo(data->subject,&where,&whend)) == -2) {
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
if (data->filename != NULL) {
if ((result->filename = _FP_strdup (data->filename)) == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY),
strlen (data->filename)+1);
*ret = UURET_NOMEM;
UUkillfile (result);
return NULL;
}
}
else
result->filename = NULL;
if (uu_dumbness <= 1)
result->subfname = UUGetFileName (data->subject, where, whend);
else
result->subfname = NULL;
result->mimeid = _FP_strdup (data->mimeid);
result->mimetype = _FP_strdup (data->mimetype);
if (result->partno == -1 &&
(data->uudet == PT_ENCODED || data->uudet == QP_ENCODED))
result->partno = 1;
if (data->flags & FL_SINGLE) {
/*
* Don't touch this part. But it should really have a filename
*/
if (result->filename == NULL) {
sprintf (temp, "%s.%03d", nofname, ++nofnum);
result->filename = _FP_strdup (temp);
}
if (result->subfname == NULL)
result->subfname = _FP_strdup (result->filename);
if (result->filename == NULL ||
result->subfname == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY),
(result->filename==NULL)?
(strlen(temp)+1):(strlen(result->filename)+1));
*ret = UURET_NOMEM;
UUkillfile(result);
return NULL;
}
if (result->partno == -1)
result->partno = 1;
}
else if (result->subfname == NULL && data->uudet &&
(data->begin || result->partno == 1 ||
(!uu_dumbness && result->partno == -1 &&
(data->subject != NULL || result->filename != NULL)))) {
/*
* If it's the first part of something and has some valid data, but
* no subject or anything, initialize lastvalid
*/
/*
* in this case, it really _should_ have a filename somewhere
*/
if (result->filename != NULL)
result->subfname = _FP_strdup (result->filename);
else { /* if not, escape to UNKNOWN. We need to fill subfname */
sprintf (temp, "%s.%03d", nofname, ++nofnum);
result->subfname = _FP_strdup (temp);
}
/*
* in case the strdup failed
*/
if (result->subfname == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY),
(result->filename)?
(strlen(result->filename)+1):(strlen(temp)+1));
*ret = UURET_NOMEM;
UUkillfile (result);
return NULL;
}
/*
* if it's also got an 'end', or is the last part in a MIME-Mail,
* then don't set lastvalid
*/
if (!data->end && (!data->partno || data->partno != data->maxpno)) {
/*
* initialize lastvalid
*/
lastvalid = 1;
lastenc = data->uudet;
lastpart = result->partno = 1;
_FP_strncpy (uucheck_lastname, result->subfname, 256);
}
else
result->partno = 1;
}
else if (result->subfname == NULL && data->uudet && data->mimeid) {
/*
* if it's got a file name, use it. Else use the mime-id for identifying
* this part, and hope there's no other files encoded in the same message
* under the same id.
*/
if (result->filename)
result->subfname = _FP_strdup (result->filename);
else
result->subfname = _FP_strdup (result->mimeid);
}
else if (result->subfname == NULL && data->uudet) {
/*
* ff we have lastvalid, use it. Make an exception for
* Base64-encoded files.
*/
if (data->uudet == B64ENCODED) {
/*
* Assume it's the first part. I wonder why it's got no part number?
*/
if (result->filename != NULL)
result->subfname = _FP_strdup (result->filename);
else { /* if not, escape to UNKNOWN. We need to fill subfname */
sprintf (temp, "%s.%03d", nofname, ++nofnum);
result->subfname = _FP_strdup (temp);
}
if (result->subfname == NULL) {
UUMessage (uucheck_id, __LINE__, UUMSG_ERROR,
uustring (S_OUT_OF_MEMORY),
(result->filename)?
(strlen(result->filename)+1):(strlen(temp)+1));
*ret = UURET_NOMEM;
UUkillfile (result);
return NULL;
}
lastvalid = 0;
}
else if (lastvalid && data->uudet == lastenc) {
result->subfname = _FP_strdup (uucheck_lastname);
result->partno = ++lastpart;
/*
* if it's the last part, invalidate lastvalid
*/
if (data->end || (data->partno && data->partno == data->maxpno))
lastvalid = 0;
}
else {
/*
* it's got no info, it's got no begin, and we don't know anything
* about this part. Let's forget all about it.
*/
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
}
else if (result->subfname == NULL && result->partno == -1) {
/*
* This, too, is a part without any useful information that we
* should forget about.
*/
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
else if (result->subfname == NULL) {
/*
* This is a part without useful subject name, a valid part number
* but no encoded data. It *could* be the zeroeth part of something,
* but we don't care here. Just forget it.
*/
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
/*
* now, handle some cases where we have a useful subject but no
* useful part number
*/
if (result->partno == -1 && data->begin) {
/*
* hmm, this is reason enough to initialize lastvalid, at least
* if we have no end
*/
if (!data->end) {
_FP_strncpy (uucheck_lastname, result->subfname, 256);
result->partno = lastpart = 1;
lastenc = data->uudet;
lastvalid = 1;
}
else
result->partno = 1;
}
else if (result->partno == -1 && data->uudet) {
if (lastvalid && _FP_stricmp (uucheck_lastname, result->subfname) == 0) {
/*
* if the subject filename is the same as last time, use part no
* of lastvalid. If at end, invalidate lastvalid
*/
result->partno = ++lastpart;
if (data->end)
lastvalid = 0;
}
else {
/*
* data but no part no. It's something UUInsertPartToList() should
* handle
*/
goto skipcheck;
}
}
else if (result->partno == -1) {
/*
* it's got no data, so why should we need this one anyway?
*/
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
/*
* at this point, the part should have a valid subfname and a valid
* part number. If it doesn't, then fail.
*/
if (result->subfname == NULL || result->partno == -1) {
*ret = UURET_NODATA;
UUkillfile (result);
return NULL;
}
skipcheck:
if (result->filename) {
if (*(ptr = _FP_cutdir (result->filename))) {
p2 = _FP_strdup (ptr);
_FP_free (result->filename);
result->filename = p2;
}
}
result->data = data;
result->NEXT = NULL;
*ret = UURET_OK;
return result;
}
/*
* Insert one part of a file into the global list
**/
int
UUInsertPartToList (uufile *data)
{
uulist *iter = UUGlobalFileList, *unew;
uufile *fiter, *last;
/*
* Part belongs together, if
* (a) The file name received from the subject lines match _or_
* the MIME-IDs match,
* (b) Not both parts have a begin line
* (c) Not both parts have an end line
* (d) Both parts don't have different MIME-IDs
* (e) Both parts don't encode different files
* (f) The other part wants to stay alone (FL_SINGLE)
*/
/*
* check if this part wants to be left alone. If so, don't bother
* to do all the checks
*/
while (iter) {
if (data->data->flags & FL_SINGLE) {
/* this space intentionally left blank */
}
else if ((_FP_stricmp (data->subfname, iter->subfname) == 0 ||
(data->mimeid && iter->mimeid &&
strcmp (data->mimeid, iter->mimeid) == 0)) &&
!(iter->begin && data->data->begin) &&
!(iter->end && data->data->end) &&
!(data->mimeid && iter->mimeid &&
strcmp (data->mimeid, iter->mimeid) != 0) &&
!(data->filename && iter->filename &&
strcmp (data->filename, iter->filename) != 0) &&
!(iter->flags & FL_SINGLE)) {
/*
* if we already have this part, don't try to insert it
*/
for (fiter=iter->thisfile;
fiter && (data->partno>fiter->partno) && !fiter->data->end;
fiter=fiter->NEXT)
/* empty loop */ ;
if (fiter &&
(data->partno==fiter->partno ||
(data->partno > fiter->partno && fiter->data->end)))
goto goahead;
if (iter->filename == NULL && data->filename != NULL) {
if ((iter->filename = _FP_strdup (data->filename)) == NULL)
return UURET_NOMEM;
}
/*
* special case when we might have tagged a part as Base64 when the
* file was really XX
*/
if (data->data->uudet == B64ENCODED &&
iter->uudet == XX_ENCODED && iter->begin) {
data->data->uudet = XX_ENCODED;
}
else if (data->data->uudet == XX_ENCODED && data->data->begin &&
iter->uudet == B64ENCODED) {
iter->uudet = XX_ENCODED;
fiter = iter->thisfile;
while (fiter) {
fiter->data->uudet = XX_ENCODED;
fiter = fiter->NEXT;
}
}
/*
* If this is from a Message/Partial, we believe only the
* iter->uudet from the first part
*/
if (data->data->flags & FL_PARTIAL) {
if (data->partno == 1) {
iter->uudet = data->data->uudet;
iter->flags = data->data->flags;
}
}
else {
if (data->data->uudet) iter->uudet = data->data->uudet;
if (data->data->flags) iter->flags = data->data->flags;
}
if (iter->mode == 0 && data->data->mode != 0)
iter->mode = data->data->mode;
if (data->data->begin) iter->begin = (data->partno)?data->partno:1;
if (data->data->end) iter->end = (data->partno)?data->partno:1;
if (data->mimetype) {
_FP_free (iter->mimetype);
iter->mimetype = _FP_strdup (data->mimetype);
}
/*
* insert part at the beginning
*/
if (data->partno != -1 && data->partno < iter->thisfile->partno) {
iter->state = UUFILE_READ;
data->NEXT = iter->thisfile;
iter->thisfile = data;
return UURET_OK;
}
/*
* insert part somewhere else
*/
iter->state = UUFILE_READ; /* prepare for re-checking */
fiter = iter->thisfile;
last = NULL;
while (fiter) {
/*
* if we find the same part no again, check which one looks better
*/
if (data->partno == fiter->partno) {
if (fiter->data->subject == NULL)
return UURET_NODATA;
else if (_FP_stristr (fiter->data->subject, "repost") != NULL &&
_FP_stristr (data->data->subject, "repost") == NULL)
return UURET_NODATA;
else if (fiter->data->uudet && !data->data->uudet)
return UURET_NODATA;
else {
/*
* replace
*/
data->NEXT = fiter->NEXT;
fiter->NEXT = NULL;
UUkillfile (fiter);
if (last == NULL)
iter->thisfile = data;
else
last->NEXT = data;
return UURET_OK;
}
}
/*
* if at the end of the part list, add it
*/
if (fiter->NEXT == NULL ||
(data->partno != -1 && data->partno < fiter->NEXT->partno)) {
data->NEXT = fiter->NEXT;
fiter->NEXT = data;
if (data->partno == -1)
data->partno = fiter->partno + 1;
return UURET_OK;
}
last = fiter;
fiter = fiter->NEXT;
}
return UURET_OK; /* Shouldn't get here */
}
goahead:
/*
* we need iter below
*/
if (iter->NEXT == NULL)
break;
iter = iter->NEXT;
}
/*
* handle new entry
*/
if (data->partno == -1) {
/*
* if it's got no part no, and it's MIME mail, then assume this is
* part no. 1. If it's not MIME, then we can't handle it; if it
* had a 'begin', it'd have got a part number assigned by
* UUPreProcessPart().
*/
if (data->data->uudet == B64ENCODED || data->data->uudet == BH_ENCODED)
data->partno = 1;
else
return UURET_NODATA;
}
if ((unew = (uulist *) malloc (sizeof (uulist))) == NULL) {
return UURET_NOMEM;
}
if ((unew->subfname = _FP_strdup (data->subfname)) == NULL) {
_FP_free (unew);
return UURET_NOMEM;
}
if (data->filename != NULL) {
if ((unew->filename = _FP_strdup (data->filename)) == NULL) {
_FP_free (unew->subfname);
_FP_free (unew);
return UURET_NOMEM;
}
}
else
unew->filename = NULL;
if (data->mimeid != NULL) {
if ((unew->mimeid = _FP_strdup (data->mimeid)) == NULL) {
_FP_free (unew->subfname);
_FP_free (unew->filename);
_FP_free (unew);
return UURET_NOMEM;
}
}
else
unew->mimeid = NULL;
if (data->mimetype != NULL) {
if ((unew->mimetype = _FP_strdup (data->mimetype)) == NULL) {
_FP_free (unew->mimeid);
_FP_free (unew->subfname);
_FP_free (unew->filename);
_FP_free (unew);
return UURET_NOMEM;
}
}
else
unew->mimetype = NULL;
unew->state = UUFILE_READ;
unew->binfile = NULL;
unew->thisfile = data;
unew->mode = data->data->mode;
unew->uudet = data->data->uudet;
unew->flags = data->data->flags;
unew->begin = (data->data->begin) ? ((data->partno)?data->partno:1) : 0;
unew->end = (data->data->end) ? ((data->partno)?data->partno:1) : 0;
unew->misparts = NULL;
unew->haveparts = NULL;
unew->NEXT = NULL;
if (iter == NULL)
UUGlobalFileList = unew;
else
iter->NEXT = unew;
return UURET_OK;
}
/*
* At this point, all files are read in and stored in the
* "UUGlobalFileList". Do some checking. All parts there?
**/
uulist *
UUCheckGlobalList (void)
{
int misparts[MAXPLIST], haveparts[MAXPLIST];
int miscount, havecount, count, flag, part;
uulist *liter=UUGlobalFileList, *prev;
uufile *fiter;
long thesize;
while (liter) {
miscount = 0;
thesize = 0;
if (liter->state & UUFILE_OK) {
liter = liter->NEXT;
continue;
}
else if ((liter->uudet == QP_ENCODED ||
liter->uudet == PT_ENCODED) &&
(liter->flags & FL_SINGLE)) {
if ((liter->flags&FL_PROPER)==0)
liter->size = -1;
else
liter->size = liter->thisfile->data->length;
liter->state = UUFILE_OK;
continue;
}
else if ((fiter = liter->thisfile) == NULL) {
liter->state = UUFILE_NODATA;
liter = liter->NEXT;
continue;
}
/*
* Re-Check this file
*/
flag = 0;
miscount = 0;
havecount = 0;
thesize = 0;
liter->state = UUFILE_READ;
/*
* search encoded data
*/
while (fiter && !fiter->data->uudet) {
if (havecount<MAXPLIST) {
haveparts[havecount++] = fiter->partno;
}
fiter = fiter->NEXT;
}
if (fiter == NULL) {
liter->state = UUFILE_NODATA;
liter = liter->NEXT;
continue;
}
if (havecount<MAXPLIST) {
haveparts[havecount++] = fiter->partno;
}
if ((part = fiter->partno) > 1) {
if (!fiter->data->begin) {
for (count=1; count < part && miscount < MAXPLIST; count++)
misparts[miscount++] = count;
}
}
/*
* don't care if so many parts are missing
*/
if (miscount >= MAXPLIST) {
liter->state = UUFILE_MISPART;
liter = liter->NEXT;
continue;
}
if (liter->uudet == B64ENCODED ||
liter->uudet == QP_ENCODED ||
liter->uudet == PT_ENCODED)
flag |= 3; /* Don't need begin or end with Base64 or plain text*/
if (fiter->data->begin) flag |= 1;
if (fiter->data->end) flag |= 2;
if (fiter->data->uudet) flag |= 4;
/*
* guess size of part
*/
switch (fiter->data->uudet) {
case UU_ENCODED:
case XX_ENCODED:
thesize += 3*fiter->data->length/4;
thesize -= 3*fiter->data->length/124; /* substract 2 of 62 chars */
break;
case B64ENCODED:
thesize += 3*fiter->data->length/4;
thesize -= fiter->data->length/52; /* substract 2 of 78 chars */
break;
case QP_ENCODED:
case PT_ENCODED:
thesize += fiter->data->length;
break;
}
fiter = fiter->NEXT;
while (fiter != NULL) {
for (count=part+1; count<fiter->partno && miscount<MAXPLIST; count++)
misparts[miscount++] = count;
part = fiter->partno;
if (havecount<MAXPLIST)
haveparts[havecount++]=part;
if (fiter->data->begin) flag |= 1;
if (fiter->data->end) flag |= 2;
if (fiter->data->uudet) flag |= 4;
switch (fiter->data->uudet) {
case UU_ENCODED:
case XX_ENCODED:
thesize += 3*fiter->data->length/4;
thesize -= 3*fiter->data->length/124; /* substract 2 of 62 chars */
break;
case B64ENCODED:
thesize += 3*fiter->data->length/4;
thesize -= fiter->data->length/52; /* substract 2 of 78 chars */
break;
case QP_ENCODED:
case PT_ENCODED:
thesize += fiter->data->length;
break;
}
if (fiter->data->end)
break;
fiter = fiter->NEXT;
}
/*
* if in fast mode, we don't notice an 'end'. So if its uu or xx
* encoded, there's a begin line and encoded data, assume it's
* there.
*/
if (uu_fast_scanning && (flag & 0x01) && (flag & 0x04) &&
(liter->uudet == UU_ENCODED || liter->uudet == XX_ENCODED))
flag |= 2;
/*
* Set the parts we have and/or missing
*/
_FP_free (liter->haveparts);
_FP_free (liter->misparts);
liter->haveparts = NULL;
liter->misparts = NULL;
if (havecount) {
if ((liter->haveparts=(int*)malloc((havecount+1)*sizeof(int)))!=NULL) {
memcpy (liter->haveparts, haveparts, havecount*sizeof(int));
liter->haveparts[havecount] = 0;
}
}
if (miscount) {
if ((liter->misparts=(int*)malloc((miscount+1)*sizeof(int)))!=NULL) {
memcpy (liter->misparts, misparts, miscount*sizeof(int));
liter->misparts[miscount] = 0;
}
liter->state |= UUFILE_MISPART;
}
/*
* Finalize checking
*/
if ((flag & 4) == 0) liter->state |= UUFILE_NODATA;
if ((flag & 1) == 0) liter->state |= UUFILE_NOBEGIN;
if ((flag & 2) == 0) liter->state |= UUFILE_NOEND;
if ((flag & 7) == 7 && miscount==0) {
liter->state = UUFILE_OK;
}
if ((uu_fast_scanning && (liter->flags&FL_PROPER)==0) || thesize<=0)
liter->size = -1;
else
liter->size = thesize;
if (liter->state==UUFILE_OK &&
(liter->filename==NULL || liter->filename[0]=='\0')) {
/*
* Emergency backup if the file does not have a filename
*/
_FP_free (liter->filename);
if (liter->subfname && liter->subfname[0] &&
_FP_strpbrk (liter->subfname, "()[];: ") == NULL)
liter->filename = _FP_strdup (liter->subfname);
else {
sprintf (uucheck_tempname, "%s.%03d", nofname, ++nofnum);
liter->filename = _FP_strdup (uucheck_tempname);
}
}
liter = liter->NEXT;
}
/*
* Sets back (PREV) links
*/
liter = UUGlobalFileList;
prev = NULL;
while (liter) {
liter->PREV = prev;
prev = liter;
liter = liter->NEXT;
}
return UUGlobalFileList;
}
/*****************************************************************************
+ Frank Pilhofer fp@informatik.uni-frankfurt.de +
+---------------------------------------------------------------------------+
| Department of Computer Sciences * University of Frankfurt / Main, Germany |
*****************************************************************************/
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