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Fixed infinite loop bug, cleaned out tab chars.

This commit is contained in:
Ryan C. Gordon 2002-08-30 14:30:49 +00:00
parent b28af63f2f
commit ee077eabec
1 changed files with 24 additions and 22 deletions
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46
archivers/zip.c
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@ -549,18 +549,18 @@ static void zip_free_entries(ZIPentry *entries, PHYSFS_uint32 max)
static ZIPentry *zip_find_entry(ZIPinfo *info, const char *path, int *isDir)
{
ZIPentry *a = info->entries;
PHYSFS_sint32 pathlen = strlen(path);
PHYSFS_sint32 lo = 0;
PHYSFS_sint32 pathlen = strlen(path);
PHYSFS_sint32 lo = 0;
PHYSFS_sint32 hi = (PHYSFS_sint32) (info->entryCount - 1);
PHYSFS_sint32 middle;
const char *thispath = NULL;
const char *thispath = NULL;
int rc;
while (lo <= hi)
{
middle = lo + ((hi - lo) / 2);
thispath = a[middle].name;
rc = strncmp(path, thispath, pathlen);
middle = lo + ((hi - lo) / 2);
thispath = a[middle].name;
rc = strncmp(path, thispath, pathlen);
if (rc > 0)
lo = middle + 1;
@ -568,19 +568,21 @@ static ZIPentry *zip_find_entry(ZIPinfo *info, const char *path, int *isDir)
else if (rc < 0)
hi = middle - 1;
else /* substring match...might be dir or entry or nothing. */
{
else /* substring match...might be dir or entry or nothing. */
{
if (isDir != NULL)
{
*isDir = (thispath[pathlen] == '/');
if (*isDir)
*isDir = (thispath[pathlen] == '/');
if (*isDir)
return(NULL);
} /* if */
if (thispath[pathlen] == '\0') /* found entry? */
return(&a[middle]);
} /* else */
} /* while */
return(&a[middle]);
else
hi = middle - 1; /* adjust search params, try again. */
} /* if */
} /* while */
if (isDir != NULL)
*isDir = 0;
@ -1024,31 +1026,31 @@ static int zip_parse_end_of_central_dir(void *in, DirHandle *dirh,
/* find the end-of-central-dir record, and seek to it. */
pos = zip_find_end_of_central_dir(in, &len);
BAIL_IF_MACRO(pos == -1, NULL, 0);
BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, pos), NULL, 0);
BAIL_IF_MACRO(!__PHYSFS_platformSeek(in, pos), NULL, 0);
/* check signature again, just in case. */
BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
BAIL_IF_MACRO(ui32 != ZIP_END_OF_CENTRAL_DIR_SIG, ERR_NOT_AN_ARCHIVE, 0);
/* number of this disk */
/* number of this disk */
BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
BAIL_IF_MACRO(ui16 != 0, ERR_UNSUPPORTED_ARCHIVE, 0);
/* number of the disk with the start of the central directory */
/* number of the disk with the start of the central directory */
BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
BAIL_IF_MACRO(ui16 != 0, ERR_UNSUPPORTED_ARCHIVE, 0);
/* total number of entries in the central dir on this disk */
/* total number of entries in the central dir on this disk */
BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
/* total number of entries in the central dir */
/* total number of entries in the central dir */
BAIL_IF_MACRO(!readui16(in, &zipinfo->entryCount), NULL, 0);
BAIL_IF_MACRO(ui16 != zipinfo->entryCount, ERR_UNSUPPORTED_ARCHIVE, 0);
/* size of the central directory */
/* size of the central directory */
BAIL_IF_MACRO(!readui32(in, &ui32), NULL, 0);
/* offset of central directory */
/* offset of central directory */
BAIL_IF_MACRO(!readui32(in, central_dir_ofs), NULL, 0);
BAIL_IF_MACRO(pos < *central_dir_ofs + ui32, ERR_UNSUPPORTED_ARCHIVE, 0);
@ -1060,12 +1062,12 @@ static int zip_parse_end_of_central_dir(void *in, DirHandle *dirh,
* sizeof central dir)...the difference in bytes is how much arbitrary
* data is at the start of the physical file.
*/
*data_start = pos - (*central_dir_ofs + ui32);
*data_start = pos - (*central_dir_ofs + ui32);
/* Now that we know the difference, fix up the central dir offset... */
*central_dir_ofs += *data_start;
/* zipfile comment length */
/* zipfile comment length */
BAIL_IF_MACRO(!readui16(in, &ui16), NULL, 0);
/*