Tcl Source Code

 *
 * MODULE_SCOPE int	TclUtfToUniChar(const char *string, Tcl_UniChar *ch);
 *----------------------------------------------------------------
 */

#define TclUtfToUniChar(str, chPtr) \
	((((unsigned char) *(str)) < 0xC0) ?		\
	    ((*(chPtr) = (unsigned char) *(str)), 1)	\
	    : Tcl_UtfToUniChar(str, chPtr))

/*
 *----------------------------------------------------------------
 * Macro counterpart of the Tcl_NumUtfChars() function. To be used in speed-
 * -sensitive points where it pays to avoid a function call in the common case
 * of counting along a string of all one-byte characters.  The ANSI C

 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include "tclFileSystem.h"
#include <assert.h>

/*
 * Prototypes for functions defined later in this file.
 */

static Tcl_Obj *	AppendPath(Tcl_Obj *head, Tcl_Obj *tail);
static void		DupFsPathInternalRep(Tcl_Obj *srcPtr,

}

Tcl_Obj *
TclJoinPath(
    int elements,
    Tcl_Obj * const objv[])
{
    Tcl_Obj *res = NULL;

    int i;
    const Tcl_Filesystem *fsPtr = NULL;

    assert ( elements >= 0 );

    if (elements == 0) {
	return Tcl_NewObj();
    }


    assert ( elements > 0 );

    if (elements == 2) {
	Tcl_Obj *elt = objv[0];

	/*
	 * This is a special case where we can be much more efficient, where
	 * we are joining a single relative path onto an object that is
	 * already of path type. The 'TclNewFSPathObj' call below creates an
	 * object which can be normalized more efficiently. Currently we only
	 * use the special case when we have exactly two elements, but we
	 * could expand that in the future.
	 *
	 * Bugfix [a47641a0]. TclNewFSPathObj requires first argument
	 * to be an absolute path. Added a check for that elt is absolute.
	 */


	if ((elt->typePtr == &tclFsPathType)
		&& !((elt->bytes != NULL) && (elt->bytes[0] == '\0'))
                && TclGetPathType(elt, NULL, NULL, NULL) == TCL_PATH_ABSOLUTE) {
            Tcl_Obj *tailObj = objv[1];
	    Tcl_PathType type = TclGetPathType(tailObj, NULL, NULL, NULL);


	    if (type == TCL_PATH_RELATIVE) {
		const char *str;
		int len;

		str = Tcl_GetStringFromObj(tailObj, &len);
		if (len == 0) {
		    /*
		     * This happens if we try to handle the root volume '/'.
		     * There's no need to return a special path object, when
		     * the base itself is just fine!
		     */

		    return elt;
		}

		/*
		 * If it doesn't begin with '.' and is a unix path or it a
		 * windows path without backslashes, then we can be very
		 * efficient here. (In fact even a windows path with
		 * backslashes can be joined efficiently, but the path object
		 * would not have forward slashes only, and this would
		 * therefore contradict our 'file join' documentation).
		 */

		if (str[0] != '.' && ((tclPlatform != TCL_PLATFORM_WINDOWS)
			|| (strchr(str, '\\') == NULL))) {
		    /*
		     * Finally, on Windows, 'file join' is defined to convert
		     * all backslashes to forward slashes, so the base part
		     * cannot have backslashes either.
		     */

		    if ((tclPlatform != TCL_PLATFORM_WINDOWS)
			    || (strchr(Tcl_GetString(elt), '\\') == NULL)) {

			if (PATHFLAGS(elt)) {
			    return TclNewFSPathObj(elt, str, len);

			}
			if (TCL_PATH_ABSOLUTE != Tcl_FSGetPathType(elt)) {
			    return TclNewFSPathObj(elt, str, len);

			}
			(void) Tcl_FSGetNormalizedPath(NULL, elt);
			if (elt == PATHOBJ(elt)->normPathPtr) {
			    return TclNewFSPathObj(elt, str, len);

			}
		    }
		}

		/*
		 * Otherwise we don't have an easy join, and we must let the
		 * more general code below handle things.
		 */
	    } else if (tclPlatform == TCL_PLATFORM_UNIX) {
		return tailObj;

	    } else {
		const char *str = TclGetString(tailObj);

		if (tclPlatform == TCL_PLATFORM_WINDOWS) {
		    if (strchr(str, '\\') == NULL) {
			return tailObj;

		    }
		}
	    }
	}
    }

    assert ( res == NULL );

    for (i = 0; i < elements; i++) {
	int driveNameLength, strEltLen, length;
	Tcl_PathType type;
	char *strElt, *ptr;
	Tcl_Obj *driveName = NULL;
	Tcl_Obj *elt = objv[i];

	strElt = Tcl_GetStringFromObj(elt, &strEltLen);
	driveNameLength = 0;
	type = TclGetPathType(elt, &fsPtr, &driveNameLength, &driveName);
	if (type != TCL_PATH_RELATIVE) {
	    /*
	     * Zero out the current result.
	     */

		     * is not in normalized form
		     */

		    goto noQuickReturn;
		}
		ptr++;
	    }
	    if (res != NULL) {
		TclDecrRefCount(res);
	    }

	    /*
	     * This element is just what we want to return already; no further
	     * manipulation is requred.
	     */

	    return elt;
	}

	/*
	 * The path element was not of a suitable form to be returned as is.
	 * We need to perform a more complex operation here.
	 */

    noQuickReturn:
	if (res == NULL) {
	    res = Tcl_NewObj();
	    ptr = Tcl_GetStringFromObj(res, &length);
	} else {
	    ptr = Tcl_GetStringFromObj(res, &length);
	}

	/*
	 * Strip off any './' before a tilde, unless this is the beginning of
	 * the path.
	 */

	if (length > 0 && strEltLen > 0 && (strElt[0] == '.') &&

	    int needsSep = 0;

	    if (fsPtr->filesystemSeparatorProc != NULL) {
		Tcl_Obj *sep = fsPtr->filesystemSeparatorProc(res);

		if (sep != NULL) {
		    separator = TclGetString(sep)[0];
		    Tcl_DecrRefCount(sep);
		}
		/* Safety check in case the VFS driver caused sharing */
		if (Tcl_IsShared(res)) {
		    TclDecrRefCount(res);
		    res = Tcl_DuplicateObj(res);
		    Tcl_IncrRefCount(res);
		}

		    needsSep = 1;
		}
	    }
	    length = ptr - TclGetString(res);
	    Tcl_SetObjLength(res, length);
	}
    }
    assert ( res != NULL );


    return res;






}

/*
 *---------------------------------------------------------------------------
 *
 * Tcl_FSConvertToPathType --
 *

/*
 * zipfs.c --
 *
 *	Implementation of the ZIP filesystem used in AndroWish.
 *
 * Copyright (c) 2013-2017 Christian Werner <[email protected]>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include "tclFileSystem.h"
#include "zipfs.h"

#if !defined(_WIN32) && !defined(_WIN64)
#include <sys/mman.h>
#endif
#include <errno.h>
#include <string.h>
#include <sys/stat.h>

typedef struct ZipEntry {
    char *name;               /* The full pathname of the virtual file */
    ZipFile *zipfile;         /* The ZIP file holding this virtual file */
    long offset;              /* Data offset into memory mapped ZIP file */
    int nbyte;                /* Uncompressed size of the virtual file */
    int nbytecompr;           /* Compressed size of the virtual file */
    int cmeth;                /* Compress method */
    int isdir;	              /* Set to 1 if directory, -1 if root */
    int depth; 	              /* Number of slashes in path. */
    int crc32;                /* CRC-32 */
    int timestamp;            /* Modification time */
    int isenc;                /* True if data is encrypted */
    unsigned char *data;      /* File data if written */
    struct ZipEntry *next;    /* Next file in the same archive */
    struct ZipEntry *tnext;   /* Next top-level dir in archive */

    ZipFile *zipfile;         /* The ZIP file holding this channel */
    ZipEntry *zipentry;       /* Pointer back to virtual file */
    unsigned long nmax;       /* Max. size for write */
    unsigned long nbyte;      /* Number of bytes of uncompressed data */
    unsigned long nread;      /* Pos of next byte to be read from the channel */
    unsigned char *ubuf;      /* Pointer to the uncompressed data */
    int iscompr;              /* True if data is compressed */
    int isdir;	              /* Set to 1 if directory, -1 if root */
    int isenc;                /* True if data is encrypted */
    int iswr;                 /* True if open for writing */
    unsigned long keys[3];    /* Key for decryption */
} ZipChannel;

/*
 * Global variables.

		    continue;
		}
	    }
	}
	path[j++] = c;
    }
    if (j == 0) {
	path[j++] = '/';
    }
    path[j] = 0;
    Tcl_DStringSetLength(dsPtr, j);
    return Tcl_DStringValue(dsPtr);
}

/*

	zf->data = MAP_FAILED;
    }
#endif
    if (zf->tofree != NULL) {
	Tcl_Free((char *) zf->tofree);
	zf->tofree = NULL;
    }
    if (zf->chan != NULL) {
	Tcl_Close(interp, zf->chan);
	zf->chan = NULL;
    }
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSOpenArchive --
 *

    }
    if (mntpt[0] != '\0') {
	z = (ZipEntry *) Tcl_Alloc(sizeof (*z));
	z->name = NULL;
	z->tnext = NULL;
	z->depth = CountSlashes(mntpt);
	z->zipfile = zf;
	z->isdir = (zf->baseoffs == 0) ? 1 : -1;	/* root marker */
	z->isenc = 0;
	z->offset = zf->baseoffs;
	z->crc32 = 0;
	z->timestamp = 0;
	z->nbyte = z->nbytecompr = 0;
	z->cmeth = ZIP_COMPMETH_STORED;
	z->data = NULL;

static int
ZipChannelRead(ClientData instanceData, char *buf, int toRead, int *errloc)
{
    ZipChannel *info = (ZipChannel *) instanceData;
    unsigned long nextpos;

    if (info->isdir < 0) {
	/*
	 * Special case: when executable combined with ZIP archive file
	 * read data in front of ZIP, i.e. the executable itself.
	 */
	nextpos = info->nread + toRead;
	if (nextpos > info->zipfile->baseoffs) {
	    toRead = info->zipfile->baseoffs - info->nread;
	    nextpos = info->zipfile->baseoffs;
	}
	if (toRead == 0) {
	    return 0;
	}
	memcpy(buf, info->zipfile->data, toRead);
	info->nread = nextpos;
	*errloc = 0;
	return toRead;
    }
    if (info->isdir) {
	*errloc = EISDIR;
	return -1;
    }
    nextpos = info->nread + toRead;
    if (nextpos > info->nbyte) {
	toRead = info->nbyte - info->nread;

 *-------------------------------------------------------------------------
 */

static int
ZipChannelSeek(ClientData instanceData, long offset, int mode, int *errloc)
{
    ZipChannel *info = (ZipChannel *) instanceData;
    unsigned long end;

    if (!info->iswr && (info->isdir < 0)) {
	/*
	 * Special case: when executable combined with ZIP archive file,
	 * seek within front of ZIP, i.e. the executable itself.
	 */
	end = info->zipfile->baseoffs;
    } else if (info->isdir) {
	*errloc = EINVAL;
	return -1;
    } else {
	end = info->nbyte;
    }
    switch (mode) {
    case SEEK_CUR:
	offset += info->nread;
	break;
    case SEEK_END:
	offset += end;
	break;
    case SEEK_SET:
	break;
    default:
	*errloc = EINVAL;
	return -1;
    }
    if (offset < 0) {
	*errloc = EINVAL;
	return -1;
    }
    if (info->iswr) {
	if ((unsigned long) offset > info->nmax) {
	    *errloc = EINVAL;
	    return -1;
	}
	if ((unsigned long) offset > info->nbyte) {
	    info->nbyte = offset;
	}
    } else if ((unsigned long) offset > end) {
	*errloc = EINVAL;
	return -1;
    }
    info->nread = (unsigned long) offset;
    return info->nread;
}


			   Tcl_GlobTypeData *types)
{
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    int scnt, len, l, dirOnly = -1, prefixLen, strip = 0, matchHidden = 0;
    char *pat, *prefix, *path, *p;
#if HAS_DRIVES
    int drive = 0;
    char drivePrefix[3];
#endif
    Tcl_DString ds, dsPref;

#if HAS_DRIVES
    if ((pattern != NULL) && (pattern[0] != '\0') &&
	(strchr(drvletters, pattern[0]) != NULL) && (pattern[1] == ':')) {

	    Tcl_DStringAppend(&dsPref, drivePrefix, -1);
	    prefixLen = Tcl_DStringLength(&dsPref);
	} else {
	    Tcl_DStringAppend(&dsPref, "/", 1);
	    prefixLen++;
	}
	prefix = Tcl_DStringValue(&dsPref);
	drive = prefix[0];
	if ((drive >= 'a') && (drive <= 'z')) {
	    drive -= 'a' - 'A';
	}
#else
	Tcl_DStringAppend(&dsPref, "/", 1);
	prefixLen++;
	prefix = Tcl_DStringValue(&dsPref);
#endif
    }
    if ((pattern != NULL) && ((pattern[0] == '.') ||

	    len--;
	} else {
	    l++;
	}
	if ((pattern == NULL) || (pattern[0] == '\0')) {
	    pattern = "*";
	}
	for (hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);
	     hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	    ZipFile *zf = (ZipFile *) Tcl_GetHashValue(hPtr);

#if HAS_DRIVES
	    if (drive && (drive != zf->mntdrv)) {
		continue;
	    }
#endif
	    if (zf->mntptlen == 0) {
		ZipEntry *z = zf->topents;

		while (z != NULL) {
		    int lenz = strlen(z->name);

		    if ((lenz > len + 1) &&

			    Tcl_DStringLength(&dsPref)));
		    Tcl_DStringSetLength(&dsPref, prefixLen);
		} else {
		    Tcl_ListObjAppendElement(NULL, result,
			Tcl_NewStringObj(zf->mntpt, zf->mntptlen));
		}
	    }

	}
	goto end;
    }
    if ((pattern == NULL) || (pattern[0] == '\0')) {
	hPtr = Tcl_FindHashEntry(&ZipFS.fileHash, path);
	if (hPtr != NULL) {
	    ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

#if HAS_DRIVES
	    if (drive && (drive != z->zipfile->mntdrv)) {
		goto end;
	    }
#endif
	    if ((dirOnly < 0) ||
		(!dirOnly && !z->isdir) ||
		(dirOnly && z->isdir)) {
		if (prefix != NULL) {
		    Tcl_DStringAppend(&dsPref, z->name, -1);
		    Tcl_ListObjAppendElement(NULL, result,
			Tcl_NewStringObj(Tcl_DStringValue(&dsPref),

	 hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
	ZipEntry *z = (ZipEntry *) Tcl_GetHashValue(hPtr);

	if ((dirOnly >= 0) &&
	    ((dirOnly && !z->isdir) || (!dirOnly && z->isdir))) {
	    continue;
	}
#if HAS_DRIVES
	if (drive && (drive != z->zipfile->mntdrv)) {
	    continue;
	}
#endif
	if ((z->depth == scnt) && Tcl_StringCaseMatch(z->name, pat, 0)) {
	    if (!matchHidden) {
		p = strrchr(z->name, '/');
		if ((p != NULL) && (p[1] == '.')) {
		    continue;
		}
	    }

    while (hPtr != NULL) {
	zf = (ZipFile *) Tcl_GetHashValue(hPtr);
	/*
	 * Volumes which overlay root are hidden.
	 */
#if HAS_DRIVES
	if (zf->mntpt[0]) {
	    vol = Tcl_ObjPrintf("%c:%s", zf->mntdrv, zf->mntpt);
	    Tcl_ListObjAppendElement(NULL, vols, vol);
	}
#else
	if (zf->mntpt[0]) {
	    vol = Tcl_NewStringObj(zf->mntpt, zf->mntptlen);
	    Tcl_ListObjAppendElement(NULL, vols, vol);
	}

	Tcl_ConditionWait(&ZipFSCond, &ZipFSMutex, &t);
	Tcl_MutexUnlock(&ZipFSMutex);
#endif
	Tcl_FSRegister(NULL, &zipfsFilesystem);
	Tcl_InitHashTable(&ZipFS.fileHash, TCL_STRING_KEYS);
	Tcl_InitHashTable(&ZipFS.zipHash, TCL_STRING_KEYS);
	ZipFS.initialized = ZipFS.idCount = 1;
#if defined(ZIPFS_IN_TCL) || defined(ZIPFS_IN_TK)
	if (interp != NULL) {
	    Tcl_StaticPackage(interp, "zipfs", Tclzipfs_Init, Tclzipfs_SafeInit);
	}
#endif
    }
    Unlock();
    if (interp != NULL) {
	TclMakeEnsemble(interp, "zipfs", safe ? initSafeMap : initMap);

	Tcl_PkgProvide(interp, "zipfs", "1.0");
    }
    return TCL_OK;
#else
    if (interp != NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("no zlib available", -1));
    }
    return TCL_ERROR;
#endif