text: /*
    +----------------------------------------------------------------------+
    | TAR archive support for Phar                                         |
    +----------------------------------------------------------------------+
    | Copyright (c) The PHP Group                                          |
    +----------------------------------------------------------------------+
    | This source file is subject to version 3.01 of the PHP license,      |
    | that is bundled with this package in the file LICENSE, and is        |
    | available through the world-wide-web at the following url:           |
    | http://www.php.net/license/3_01.txt.                                 |
    | If you did not receive a copy of the PHP license and are unable to   |
    | obtain it through the world-wide-web, please send a note to          |
    | license@php.net so we can mail you a copy immediately.               |
    +----------------------------------------------------------------------+
    | Authors: Dmitry Stogov <dmitry@php.net>                              |
    |          Gregory Beaver <cellog@php.net>                             |
    +----------------------------------------------------------------------+
  */
  
  #include "phar_internal.h"
  
  static uint32_t phar_tar_number(char *buf, size_t len) /* {{{ */
  {
  	uint32_t num = 0;
  	size_t i = 0;
  
  	while (i < len && buf[i] == ' ') {
  		++i;
  	}
  
  	while (i < len && buf[i] >= '0' && buf[i] <= '7') {
  		num = num * 8 + (buf[i] - '0');
  		++i;
  	}
  
  	return num;
  }
  /* }}} */
  
  /* adapted from format_octal() in libarchive
   *
   * Copyright (c) 2003-2009 Tim Kientzle
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  static int phar_tar_octal(char *buf, uint32_t val, int len) /* {{{ */
  {
  	char *p = buf;
  	int s = len;
  
  	p += len;		/* Start at the end and work backwards. */
  	while (s-- > 0) {
  		*--p = (char)('0' + (val & 7));
  		val >>= 3;
  	}
  
  	if (val == 0)
  		return SUCCESS;
  
  	/* If it overflowed, fill field with max value. */
  	while (len-- > 0)
  		*p++ = '7';
  
  	return FAILURE;
  }
  /* }}} */
  
  static uint32_t phar_tar_checksum(char *buf, size_t len) /* {{{ */
  {
  	uint32_t sum = 0;
  	char *end = buf + len;
  
  	while (buf != end) {
  		sum += (unsigned char)*buf;
  		++buf;
  	}
  	return sum;
  }
  /* }}} */
  
  int phar_is_tar(char *buf, char *fname) /* {{{ */
  {
  	tar_header *header = (tar_header *) buf;
  	uint32_t checksum = phar_tar_number(header->checksum, sizeof(header->checksum));
  	uint32_t ret;
  	char save[sizeof(header->checksum)], *bname;
  
  	/* assume that the first filename in a tar won't begin with <?php */
  	if (!strncmp(buf, "<?php", sizeof("<?php")-1)) {
  		return 0;
  	}
  
  	memcpy(save, header->checksum, sizeof(header->checksum));
  	memset(header->checksum, ' ', sizeof(header->checksum));
  	ret = (checksum == phar_tar_checksum(buf, 512));
  	memcpy(header->checksum, save, sizeof(header->checksum));
  	if ((bname = strrchr(fname, PHP_DIR_SEPARATOR))) {
  		fname = bname;
  	}
  	if (!ret && (bname = strstr(fname, ".tar")) && (bname[4] == '\0' || bname[4] == '.')) {
  		/* probably a corrupted tar - so we will pretend it is one */
  		return 1;
  	}
  	return ret;
  }
  /* }}} */
  
  int phar_open_or_create_tar(char *fname, size_t fname_len, char *alias, size_t alias_len, int is_data, uint32_t options, phar_archive_data** pphar, char **error) /* {{{ */
  {
  	phar_archive_data *phar;
  	int ret = phar_create_or_parse_filename(fname, fname_len, alias, alias_len, is_data, options, &phar, error);
  
  	if (FAILURE == ret) {
  		return FAILURE;
  	}
  
  	if (pphar) {
  		*pphar = phar;
  	}
  
  	phar->is_data = is_data;
  
  	if (phar->is_tar) {
  		return ret;
  	}
  
  	if (phar->is_brandnew) {
  		phar->is_tar = 1;
  		phar->is_zip = 0;
  		phar->internal_file_start = 0;
  		return SUCCESS;
  	}
  
  	/* we've reached here - the phar exists and is a regular phar */
  	if (error) {
  		spprintf(error, 4096, "phar tar error: \"%s\" already exists as a regular phar and must be deleted from disk prior to creating as a tar-based phar", fname);
  	}
  	return FAILURE;
  }
  /* }}} */
  
  static int phar_tar_process_metadata(phar_entry_info *entry, php_stream *fp) /* {{{ */
  {
  	char *metadata;
  	size_t save = php_stream_tell(fp), read;
  	phar_entry_info *mentry;
  
  	metadata = (char *) safe_emalloc(1, entry->uncompressed_filesize, 1);
  
  	read = php_stream_read(fp, metadata, entry->uncompressed_filesize);
  	if (read != entry->uncompressed_filesize) {
  		efree(metadata);
  		php_stream_seek(fp, save, SEEK_SET);
  		return FAILURE;
  	}
  
  	if (phar_parse_metadata(&metadata, &entry->metadata, entry->uncompressed_filesize) == FAILURE) {
  		/* if not valid serialized data, it is a regular string */
  		efree(metadata);
  		php_stream_seek(fp, save, SEEK_SET);
  		return FAILURE;
  	}
  
  	if (entry->filename_len == sizeof(".phar/.metadata.bin")-1 && !memcmp(entry->filename, ".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1)) {
  		entry->phar->metadata = entry->metadata;
  		ZVAL_UNDEF(&entry->metadata);
  	} else if (entry->filename_len >= sizeof(".phar/.metadata/") + sizeof("/.metadata.bin") - 1 && NULL != (mentry = zend_hash_str_find_ptr(&(entry->phar->manifest), entry->filename + sizeof(".phar/.metadata/") - 1, entry->filename_len - (sizeof("/.metadata.bin") - 1 + sizeof(".phar/.metadata/") - 1)))) {
  		/* transfer this metadata to the entry it refers */
  		mentry->metadata = entry->metadata;
  		ZVAL_UNDEF(&entry->metadata);
  	}
  
  	efree(metadata);
  	php_stream_seek(fp, save, SEEK_SET);
  	return SUCCESS;
  }
  /* }}} */
  
  #if !HAVE_STRNLEN
  static size_t strnlen(const char *s, size_t maxlen) {
          char *r = (char *)memchr(s, '\0', maxlen);
          return r ? r-s : maxlen;
  }
  #endif
  
  int phar_parse_tarfile(php_stream* fp, char *fname, size_t fname_len, char *alias, size_t alias_len, phar_archive_data** pphar, int is_data, uint32_t compression, char **error) /* {{{ */
  {
  	char buf[512], *actual_alias = NULL, *p;
  	phar_entry_info entry = {0};
  	size_t pos = 0, read, totalsize;
  	tar_header *hdr;
  	uint32_t sum1, sum2, size, old;
  	phar_archive_data *myphar, *actual;
  	int last_was_longlink = 0;
  	size_t linkname_len;
  
  	if (error) {
  		*error = NULL;
  	}
  
  	php_stream_seek(fp, 0, SEEK_END);
  	totalsize = php_stream_tell(fp);
  	php_stream_seek(fp, 0, SEEK_SET);
  	read = php_stream_read(fp, buf, sizeof(buf));
  
  	if (read != sizeof(buf)) {
  		if (error) {
  			spprintf(error, 4096, "phar error: \"%s\" is not a tar file or is truncated", fname);
  		}
  		php_stream_close(fp);
  		return FAILURE;
  	}
  
  	hdr = (tar_header*)buf;
  	old = (memcmp(hdr->magic, "ustar", sizeof("ustar")-1) != 0);
  
  	myphar = (phar_archive_data *) pecalloc(1, sizeof(phar_archive_data), PHAR_G(persist));
  	myphar->is_persistent = PHAR_G(persist);
  	/* estimate number of entries, can't be certain with tar files */
  	zend_hash_init(&myphar->manifest, 2 + (totalsize >> 12),
  		zend_get_hash_value, destroy_phar_manifest_entry, (zend_bool)myphar->is_persistent);
  	zend_hash_init(&myphar->mounted_dirs, 5,
  		zend_get_hash_value, NULL, (zend_bool)myphar->is_persistent);
  	zend_hash_init(&myphar->virtual_dirs, 4 + (totalsize >> 11),
  		zend_get_hash_value, NULL, (zend_bool)myphar->is_persistent);
  	myphar->is_tar = 1;
  	/* remember whether this entire phar was compressed with gz/bzip2 */
  	myphar->flags = compression;
  
  	entry.is_tar = 1;
  	entry.is_crc_checked = 1;
  	entry.phar = myphar;
  	pos += sizeof(buf);
  
  	do {
  		phar_entry_info *newentry;
  
  		pos = php_stream_tell(fp);
  		hdr = (tar_header*) buf;
  		sum1 = phar_tar_number(hdr->checksum, sizeof(hdr->checksum));
  		if (sum1 == 0 && phar_tar_checksum(buf, sizeof(buf)) == 0) {
  			break;
  		}
  		memset(hdr->checksum, ' ', sizeof(hdr->checksum));
  		sum2 = phar_tar_checksum(buf, old?sizeof(old_tar_header):sizeof(tar_header));
  
  		size = entry.uncompressed_filesize = entry.compressed_filesize =
  			phar_tar_number(hdr->size, sizeof(hdr->size));
  
  		/* skip global/file headers (pax) */
  		if (!old && (hdr->typeflag == TAR_GLOBAL_HDR || hdr->typeflag == TAR_FILE_HDR)) {
  			size = (size+511)&~511;
  			goto next;
  		}
  
  		if (((!old && hdr->prefix[0] == 0) || old) && strnlen(hdr->name, 100) == sizeof(".phar/signature.bin")-1 && !strncmp(hdr->name, ".phar/signature.bin", sizeof(".phar/signature.bin")-1)) {
  			zend_off_t curloc;
  			size_t sig_len;
  
  			if (size > 511) {
  				if (error) {
  					spprintf(error, 4096, "phar error: tar-based phar \"%s\" has signature that is larger than 511 bytes, cannot process", fname);
  				}
  bail:
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  			curloc = php_stream_tell(fp);
  			read = php_stream_read(fp, buf, size);
  			if (read != size || read <= 8) {
  				if (error) {
  					spprintf(error, 4096, "phar error: tar-based phar \"%s\" signature cannot be read", fname);
  				}
  				goto bail;
  			}
  #ifdef WORDS_BIGENDIAN
  # define PHAR_GET_32(buffer) \
  	(((((unsigned char*)(buffer))[3]) << 24) \
  		| ((((unsigned char*)(buffer))[2]) << 16) \
  		| ((((unsigned char*)(buffer))[1]) <<  8) \
  		| (((unsigned char*)(buffer))[0]))
  #else
  # define PHAR_GET_32(buffer) (uint32_t) *(buffer)
  #endif
  			myphar->sig_flags = PHAR_GET_32(buf);
  			if (FAILURE == phar_verify_signature(fp, php_stream_tell(fp) - size - 512, myphar->sig_flags, buf + 8, size - 8, fname, &myphar->signature, &sig_len, error)) {
  				if (error) {
  					char *save = *error;
  					spprintf(error, 4096, "phar error: tar-based phar \"%s\" signature cannot be verified: %s", fname, save);
  					efree(save);
  				}
  				goto bail;
  			}
  			myphar->sig_len = sig_len;
  			php_stream_seek(fp, curloc + 512, SEEK_SET);
  			/* signature checked out, let's ensure this is the last file in the phar */
  			if (((hdr->typeflag == '\0') || (hdr->typeflag == TAR_FILE)) && size > 0) {
  				/* this is not good enough - seek succeeds even on truncated tars */
  				php_stream_seek(fp, 512, SEEK_CUR);
  				if ((uint32_t)php_stream_tell(fp) > totalsize) {
  					if (error) {
  						spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  					}
  					php_stream_close(fp);
  					phar_destroy_phar_data(myphar);
  					return FAILURE;
  				}
  			}
  
  			read = php_stream_read(fp, buf, sizeof(buf));
  
  			if (read != sizeof(buf)) {
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  
  			hdr = (tar_header*) buf;
  			sum1 = phar_tar_number(hdr->checksum, sizeof(hdr->checksum));
  
  			if (sum1 == 0 && phar_tar_checksum(buf, sizeof(buf)) == 0) {
  				break;
  			}
  
  			if (error) {
  				spprintf(error, 4096, "phar error: \"%s\" has entries after signature, invalid phar", fname);
  			}
  
  			goto bail;
  		}
  
  		if (!last_was_longlink && hdr->typeflag == 'L') {
  			last_was_longlink = 1;
  			/* support the ././@LongLink system for storing long filenames */
  			entry.filename_len = entry.uncompressed_filesize;
  
  			/* Check for overflow - bug 61065 */
  			if (entry.filename_len == UINT_MAX || entry.filename_len == 0) {
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (invalid entry size)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  			entry.filename = pemalloc(entry.filename_len+1, myphar->is_persistent);
  
  			read = php_stream_read(fp, entry.filename, entry.filename_len);
  			if (read != entry.filename_len) {
  				efree(entry.filename);
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  			entry.filename[entry.filename_len] = '\0';
  
  			/* skip blank stuff */
  			size = ((size+511)&~511) - size;
  
  			/* this is not good enough - seek succeeds even on truncated tars */
  			php_stream_seek(fp, size, SEEK_CUR);
  			if ((uint32_t)php_stream_tell(fp) > totalsize) {
  				efree(entry.filename);
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  
  			read = php_stream_read(fp, buf, sizeof(buf));
  
  			if (read != sizeof(buf)) {
  				efree(entry.filename);
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  			continue;
  		} else if (!last_was_longlink && !old && hdr->prefix[0] != 0) {
  			char name[256];
  			int i, j;
  
  			for (i = 0; i < 155; i++) {
  				name[i] = hdr->prefix[i];
  				if (name[i] == '\0') {
  					break;
  				}
  			}
  			name[i++] = '/';
  			for (j = 0; j < 100; j++) {
  				name[i+j] = hdr->name[j];
  				if (name[i+j] == '\0') {
  					break;
  				}
  			}
  
  			entry.filename_len = i+j;
  
  			if (name[entry.filename_len - 1] == '/') {
  				/* some tar programs store directories with trailing slash */
  				entry.filename_len--;
  			}
  			entry.filename = pestrndup(name, entry.filename_len, myphar->is_persistent);
  		} else if (!last_was_longlink) {
  			int i;
  
  			/* calculate strlen, which can be no longer than 100 */
  			for (i = 0; i < 100; i++) {
  				if (hdr->name[i] == '\0') {
  					break;
  				}
  			}
  			entry.filename_len = i;
  			entry.filename = pestrndup(hdr->name, i, myphar->is_persistent);
  
  			if (i > 0 && entry.filename[entry.filename_len - 1] == '/') {
  				/* some tar programs store directories with trailing slash */
  				entry.filename[entry.filename_len - 1] = '\0';
  				entry.filename_len--;
  			}
  		}
  		last_was_longlink = 0;
  
  		phar_add_virtual_dirs(myphar, entry.filename, entry.filename_len);
  
  		if (sum1 != sum2) {
  			if (error) {
  				spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (checksum mismatch of file \"%s\")", fname, entry.filename);
  			}
  			pefree(entry.filename, myphar->is_persistent);
  			php_stream_close(fp);
  			phar_destroy_phar_data(myphar);
  			return FAILURE;
  		}
  
  		entry.tar_type = ((old & (hdr->typeflag == '\0')) ? TAR_FILE : hdr->typeflag);
  		entry.offset = entry.offset_abs = pos; /* header_offset unused in tar */
  		entry.fp_type = PHAR_FP;
  		entry.flags = phar_tar_number(hdr->mode, sizeof(hdr->mode)) & PHAR_ENT_PERM_MASK;
  		entry.timestamp = phar_tar_number(hdr->mtime, sizeof(hdr->mtime));
  		entry.is_persistent = myphar->is_persistent;
  
  		if (old && entry.tar_type == TAR_FILE && S_ISDIR(entry.flags)) {
  			entry.tar_type = TAR_DIR;
  		}
  
  		if (entry.tar_type == TAR_DIR) {
  			entry.is_dir = 1;
  		} else {
  			entry.is_dir = 0;
  		}
  
  		entry.link = NULL;
  		/* link field is null-terminated unless it has 100 non-null chars.
  		 * Thus we can not use strlen. */
  		linkname_len = strnlen(hdr->linkname, 100);
  		if (entry.tar_type == TAR_LINK) {
  			if (!zend_hash_str_exists(&myphar->manifest, hdr->linkname, linkname_len)) {
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file - hard link to non-existent file \"%.*s\"", fname, (int)linkname_len, hdr->linkname);
  				}
  				pefree(entry.filename, entry.is_persistent);
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  			entry.link = estrndup(hdr->linkname, linkname_len);
  		} else if (entry.tar_type == TAR_SYMLINK) {
  			entry.link = estrndup(hdr->linkname, linkname_len);
  		}
  		phar_set_inode(&entry);
  
  		newentry = zend_hash_str_update_mem(&myphar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info));
  		ZEND_ASSERT(newentry != NULL);
  
  		if (entry.is_persistent) {
  			++entry.manifest_pos;
  		}
  
  		if (entry.filename_len >= sizeof(".phar/.metadata")-1 && !memcmp(entry.filename, ".phar/.metadata", sizeof(".phar/.metadata")-1)) {
  			if (FAILURE == phar_tar_process_metadata(newentry, fp)) {
  				if (error) {
  					spprintf(error, 4096, "phar error: tar-based phar \"%s\" has invalid metadata in magic file \"%s\"", fname, entry.filename);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  		}
  
  		if (!actual_alias && entry.filename_len == sizeof(".phar/alias.txt")-1 && !strncmp(entry.filename, ".phar/alias.txt", sizeof(".phar/alias.txt")-1)) {
  			/* found explicit alias */
  			if (size > 511) {
  				if (error) {
  					spprintf(error, 4096, "phar error: tar-based phar \"%s\" has alias that is larger than 511 bytes, cannot process", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  
  			read = php_stream_read(fp, buf, size);
  
  			if (read == size) {
  				buf[size] = '\0';
  				if (!phar_validate_alias(buf, size)) {
  					if (size > 50) {
  						buf[50] = '.';
  						buf[51] = '.';
  						buf[52] = '.';
  						buf[53] = '\0';
  					}
  
  					if (error) {
  						spprintf(error, 4096, "phar error: invalid alias \"%s\" in tar-based phar \"%s\"", buf, fname);
  					}
  
  					php_stream_close(fp);
  					phar_destroy_phar_data(myphar);
  					return FAILURE;
  				}
  
  				actual_alias = pestrndup(buf, size, myphar->is_persistent);
  				myphar->alias = actual_alias;
  				myphar->alias_len = size;
  				php_stream_seek(fp, pos, SEEK_SET);
  			} else {
  				if (error) {
  					spprintf(error, 4096, "phar error: Unable to read alias from tar-based phar \"%s\"", fname);
  				}
  
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  		}
  
  		size = (size+511)&~511;
  
  		if (((hdr->typeflag == '\0') || (hdr->typeflag == TAR_FILE)) && size > 0) {
  next:
  			/* this is not good enough - seek succeeds even on truncated tars */
  			php_stream_seek(fp, size, SEEK_CUR);
  			if ((uint32_t)php_stream_tell(fp) > totalsize) {
  				if (error) {
  					spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  				}
  				php_stream_close(fp);
  				phar_destroy_phar_data(myphar);
  				return FAILURE;
  			}
  		}
  
  		read = php_stream_read(fp, buf, sizeof(buf));
  
  		if (read != sizeof(buf)) {
  			if (error) {
  				spprintf(error, 4096, "phar error: \"%s\" is a corrupted tar file (truncated)", fname);
  			}
  			php_stream_close(fp);
  			phar_destroy_phar_data(myphar);
  			return FAILURE;
  		}
  	} while (!php_stream_eof(fp));
  
  	if (zend_hash_str_exists(&(myphar->manifest), ".phar/stub.php", sizeof(".phar/stub.php")-1)) {
  		myphar->is_data = 0;
  	} else {
  		myphar->is_data = 1;
  	}
  
  	/* ensure signature set */
  	if (!myphar->is_data && PHAR_G(require_hash) && !myphar->signature) {
  		php_stream_close(fp);
  		phar_destroy_phar_data(myphar);
  		if (error) {
  			spprintf(error, 0, "tar-based phar \"%s\" does not have a signature", fname);
  		}
  		return FAILURE;
  	}
  
  	myphar->fname = pestrndup(fname, fname_len, myphar->is_persistent);
  #ifdef PHP_WIN32
  	phar_unixify_path_separators(myphar->fname, fname_len);
  #endif
  	myphar->fname_len = fname_len;
  	myphar->fp = fp;
  	p = strrchr(myphar->fname, '/');
  
  	if (p) {
  		myphar->ext = memchr(p, '.', (myphar->fname + fname_len) - p);
  		if (myphar->ext == p) {
  			myphar->ext = memchr(p + 1, '.', (myphar->fname + fname_len) - p - 1);
  		}
  		if (myphar->ext) {
  			myphar->ext_len = (myphar->fname + fname_len) - myphar->ext;
  		}
  	}
  
  	phar_request_initialize();
  
  	if (NULL == (actual = zend_hash_str_add_ptr(&(PHAR_G(phar_fname_map)), myphar->fname, fname_len, myphar))) {
  		if (error) {
  			spprintf(error, 4096, "phar error: Unable to add tar-based phar \"%s\" to phar registry", fname);
  		}
  		php_stream_close(fp);
  		phar_destroy_phar_data(myphar);
  		return FAILURE;
  	}
  
  	myphar = actual;
  
  	if (actual_alias) {
  		phar_archive_data *fd_ptr;
  
  		myphar->is_temporary_alias = 0;
  
  		if (NULL != (fd_ptr = zend_hash_str_find_ptr(&(PHAR_G(phar_alias_map)), actual_alias, myphar->alias_len))) {
  			if (SUCCESS != phar_free_alias(fd_ptr, actual_alias, myphar->alias_len)) {
  				if (error) {
  					spprintf(error, 4096, "phar error: Unable to add tar-based phar \"%s\", alias is already in use", fname);
  				}
  				zend_hash_str_del(&(PHAR_G(phar_fname_map)), myphar->fname, fname_len);
  				return FAILURE;
  			}
  		}
  
  		zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), actual_alias, myphar->alias_len, myphar);
  	} else {
  		phar_archive_data *fd_ptr;
  
  		if (alias_len) {
  			if (NULL != (fd_ptr = zend_hash_str_find_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len))) {
  				if (SUCCESS != phar_free_alias(fd_ptr, alias, alias_len)) {
  					if (error) {
  						spprintf(error, 4096, "phar error: Unable to add tar-based phar \"%s\", alias is already in use", fname);
  					}
  					zend_hash_str_del(&(PHAR_G(phar_fname_map)), myphar->fname, fname_len);
  					return FAILURE;
  				}
  			}
  			zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len, myphar);
  			myphar->alias = pestrndup(alias, alias_len, myphar->is_persistent);
  			myphar->alias_len = alias_len;
  		} else {
  			myphar->alias = pestrndup(myphar->fname, fname_len, myphar->is_persistent);
  			myphar->alias_len = fname_len;
  		}
  
  		myphar->is_temporary_alias = 1;
  	}
  
  	if (pphar) {
  		*pphar = myphar;
  	}
  
  	return SUCCESS;
  }
  /* }}} */
  
  struct _phar_pass_tar_info {
  	php_stream *old;
  	php_stream *new;
  	int free_fp;
  	int free_ufp;
  	char **error;
  };
  
  static int phar_tar_writeheaders_int(phar_entry_info *entry, void *argument) /* {{{ */
  {
  	tar_header header;
  	size_t pos;
  	struct _phar_pass_tar_info *fp = (struct _phar_pass_tar_info *)argument;
  	char padding[512];
  
  	if (entry->is_mounted) {
  		return ZEND_HASH_APPLY_KEEP;
  	}
  
  	if (entry->is_deleted) {
  		if (entry->fp_refcount <= 0) {
  			return ZEND_HASH_APPLY_REMOVE;
  		} else {
  			/* we can't delete this in-memory until it is closed */
  			return ZEND_HASH_APPLY_KEEP;
  		}
  	}
  
  	phar_add_virtual_dirs(entry->phar, entry->filename, entry->filename_len);
  	memset((char *) &header, 0, sizeof(header));
  
  	if (entry->filename_len > 100) {
  		char *boundary;
  		if (entry->filename_len > 256) {
  			if (fp->error) {
  				spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, filename \"%s\" is too long for tar file format", entry->phar->fname, entry->filename);
  			}
  			return ZEND_HASH_APPLY_STOP;
  		}
  		boundary = entry->filename + entry->filename_len - 101;
  		while (*boundary && *boundary != '/') {
  			++boundary;
  		}
  		if (!*boundary || ((boundary - entry->filename) > 155)) {
  			if (fp->error) {
  				spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, filename \"%s\" is too long for tar file format", entry->phar->fname, entry->filename);
  			}
  			return ZEND_HASH_APPLY_STOP;
  		}
  		memcpy(header.prefix, entry->filename, boundary - entry->filename);
  		memcpy(header.name, boundary + 1, entry->filename_len - (boundary + 1 - entry->filename));
  	} else {
  		memcpy(header.name, entry->filename, entry->filename_len);
  	}
  
  	phar_tar_octal(header.mode, entry->flags & PHAR_ENT_PERM_MASK, sizeof(header.mode)-1);
  
  	if (FAILURE == phar_tar_octal(header.size, entry->uncompressed_filesize, sizeof(header.size)-1)) {
  		if (fp->error) {
  			spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, filename \"%s\" is too large for tar file format", entry->phar->fname, entry->filename);
  		}
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	if (FAILURE == phar_tar_octal(header.mtime, entry->timestamp, sizeof(header.mtime)-1)) {
  		if (fp->error) {
  			spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, file modification time of file \"%s\" is too large for tar file format", entry->phar->fname, entry->filename);
  		}
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	/* calc checksum */
  	header.typeflag = entry->tar_type;
  
  	if (entry->link) {
  		if (strlcpy(header.linkname, entry->link, sizeof(header.linkname)) >= sizeof(header.linkname)) {
  			if (fp->error) {
  				spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, link \"%s\" is too long for format", entry->phar->fname, entry->link);
  			}
  			return ZEND_HASH_APPLY_STOP;
  		}
  	}
  
  	memcpy(header.magic, "ustar", sizeof("ustar")-1);
  	memcpy(header.version, "00", sizeof("00")-1);
  	memcpy(header.checksum, "        ", sizeof("        ")-1);
  	entry->crc32 = phar_tar_checksum((char *)&header, sizeof(header));
  
  	if (FAILURE == phar_tar_octal(header.checksum, entry->crc32, sizeof(header.checksum)-1)) {
  		if (fp->error) {
  			spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, checksum of file \"%s\" is too large for tar file format", entry->phar->fname, entry->filename);
  		}
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	/* write header */
  	entry->header_offset = php_stream_tell(fp->new);
  
  	if (sizeof(header) != php_stream_write(fp->new, (char *) &header, sizeof(header))) {
  		if (fp->error) {
  			spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, header for  file \"%s\" could not be written", entry->phar->fname, entry->filename);
  		}
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	pos = php_stream_tell(fp->new); /* save start of file within tar */
  
  	/* write contents */
  	if (entry->uncompressed_filesize) {
  		if (FAILURE == phar_open_entry_fp(entry, fp->error, 0)) {
  			return ZEND_HASH_APPLY_STOP;
  		}
  
  		if (-1 == phar_seek_efp(entry, 0, SEEK_SET, 0, 0)) {
  			if (fp->error) {
  				spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, contents of file \"%s\" could not be written, seek failed", entry->phar->fname, entry->filename);
  			}
  			return ZEND_HASH_APPLY_STOP;
  		}
  
  		if (SUCCESS != php_stream_copy_to_stream_ex(phar_get_efp(entry, 0), fp->new, entry->uncompressed_filesize, NULL)) {
  			if (fp->error) {
  				spprintf(fp->error, 4096, "tar-based phar \"%s\" cannot be created, contents of file \"%s\" could not be written", entry->phar->fname, entry->filename);
  			}
  			return ZEND_HASH_APPLY_STOP;
  		}
  
  		memset(padding, 0, 512);
  		php_stream_write(fp->new, padding, ((entry->uncompressed_filesize +511)&~511) - entry->uncompressed_filesize);
  	}
  
  	if (!entry->is_modified && entry->fp_refcount) {
  		/* open file pointers refer to this fp, do not free the stream */
  		switch (entry->fp_type) {
  			case PHAR_FP:
  				fp->free_fp = 0;
  				break;
  			case PHAR_UFP:
  				fp->free_ufp = 0;
  			default:
  				break;
  		}
  	}
  
  	entry->is_modified = 0;
  
  	if (entry->fp_type == PHAR_MOD && entry->fp != entry->phar->fp && entry->fp != entry->phar->ufp) {
  		if (!entry->fp_refcount) {
  			php_stream_close(entry->fp);
  		}
  		entry->fp = NULL;
  	}
  
  	entry->fp_type = PHAR_FP;
  
  	/* note new location within tar */
  	entry->offset = entry->offset_abs = pos;
  	return ZEND_HASH_APPLY_KEEP;
  }
  /* }}} */
  
  static int phar_tar_writeheaders(zval *zv, void *argument) /* {{{ */
  {
  	return phar_tar_writeheaders_int(Z_PTR_P(zv), argument);
  }
  /* }}} */
  
  int phar_tar_setmetadata(zval *metadata, phar_entry_info *entry, char **error) /* {{{ */
  {
  	php_serialize_data_t metadata_hash;
  
  	if (entry->metadata_str.s) {
  		smart_str_free(&entry->metadata_str);
  	}
  
  	entry->metadata_str.s = NULL;
  	PHP_VAR_SERIALIZE_INIT(metadata_hash);
  	php_var_serialize(&entry->metadata_str, metadata, &metadata_hash);
  	PHP_VAR_SERIALIZE_DESTROY(metadata_hash);
  	entry->uncompressed_filesize = entry->compressed_filesize = entry->metadata_str.s ? ZSTR_LEN(entry->metadata_str.s) : 0;
  
  	if (entry->fp && entry->fp_type == PHAR_MOD) {
  		php_stream_close(entry->fp);
  	}
  
  	entry->fp_type = PHAR_MOD;
  	entry->is_modified = 1;
  	entry->fp = php_stream_fopen_tmpfile();
  	entry->offset = entry->offset_abs = 0;
  	if (entry->fp == NULL) {
  		spprintf(error, 0, "phar error: unable to create temporary file");
  		return -1;
  	}
  	if (ZSTR_LEN(entry->metadata_str.s) != php_stream_write(entry->fp, ZSTR_VAL(entry->metadata_str.s), ZSTR_LEN(entry->metadata_str.s))) {
  		spprintf(error, 0, "phar tar error: unable to write metadata to magic metadata file \"%s\"", entry->filename);
  		zend_hash_str_del(&(entry->phar->manifest), entry->filename, entry->filename_len);
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	return ZEND_HASH_APPLY_KEEP;
  }
  /* }}} */
  
  static int phar_tar_setupmetadata(zval *zv, void *argument) /* {{{ */
  {
  	int lookfor_len;
  	struct _phar_pass_tar_info *i = (struct _phar_pass_tar_info *)argument;
  	char *lookfor, **error = i->error;
  	phar_entry_info *entry = (phar_entry_info *)Z_PTR_P(zv), *metadata, newentry = {0};
  
  	if (entry->filename_len >= sizeof(".phar/.metadata") && !memcmp(entry->filename, ".phar/.metadata", sizeof(".phar/.metadata")-1)) {
  		if (entry->filename_len == sizeof(".phar/.metadata.bin")-1 && !memcmp(entry->filename, ".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1)) {
  			return phar_tar_setmetadata(&entry->phar->metadata, entry, error);
  		}
  		/* search for the file this metadata entry references */
  		if (entry->filename_len >= sizeof(".phar/.metadata/") + sizeof("/.metadata.bin") - 1 && !zend_hash_str_exists(&(entry->phar->manifest), entry->filename + sizeof(".phar/.metadata/") - 1, entry->filename_len - (sizeof("/.metadata.bin") - 1 + sizeof(".phar/.metadata/") - 1))) {
  			/* this is orphaned metadata, erase it */
  			return ZEND_HASH_APPLY_REMOVE;
  		}
  		/* we can keep this entry, the file that refers to it exists */
  		return ZEND_HASH_APPLY_KEEP;
  	}
  
  	if (!entry->is_modified) {
  		return ZEND_HASH_APPLY_KEEP;
  	}
  
  	/* now we are dealing with regular files, so look for metadata */
  	lookfor_len = spprintf(&lookfor, 0, ".phar/.metadata/%s/.metadata.bin", entry->filename);
  
  	if (Z_TYPE(entry->metadata) == IS_UNDEF) {
  		zend_hash_str_del(&(entry->phar->manifest), lookfor, lookfor_len);
  		efree(lookfor);
  		return ZEND_HASH_APPLY_KEEP;
  	}
  
  	if (NULL != (metadata = zend_hash_str_find_ptr(&(entry->phar->manifest), lookfor, lookfor_len))) {
  		int ret;
  		ret = phar_tar_setmetadata(&entry->metadata, metadata, error);
  		efree(lookfor);
  		return ret;
  	}
  
  	newentry.filename = lookfor;
  	newentry.filename_len = lookfor_len;
  	newentry.phar = entry->phar;
  	newentry.tar_type = TAR_FILE;
  	newentry.is_tar = 1;
  
  	if (NULL == (metadata = zend_hash_str_add_mem(&(entry->phar->manifest), lookfor, lookfor_len, (void *)&newentry, sizeof(phar_entry_info)))) {
  		efree(lookfor);
  		spprintf(error, 0, "phar tar error: unable to add magic metadata file to manifest for file \"%s\"", entry->filename);
  		return ZEND_HASH_APPLY_STOP;
  	}
  
  	return phar_tar_setmetadata(&entry->metadata, metadata, error);
  }
  /* }}} */
  
  int phar_tar_flush(phar_archive_data *phar, char *user_stub, zend_long len, int defaultstub, char **error) /* {{{ */
  {
  	phar_entry_info entry = {0};
  	static const char newstub[] = "<?php // tar-based phar archive stub file\n__HALT_COMPILER();";
  	php_stream *oldfile, *newfile, *stubfile;
  	int closeoldfile, free_user_stub;
  	size_t signature_length;
  	struct _phar_pass_tar_info pass;
  	char *buf, *signature, *tmp, sigbuf[8];
  	char halt_stub[] = "__HALT_COMPILER();";
  
  	entry.flags = PHAR_ENT_PERM_DEF_FILE;
  	entry.timestamp = time(NULL);
  	entry.is_modified = 1;
  	entry.is_crc_checked = 1;
  	entry.is_tar = 1;
  	entry.tar_type = '0';
  	entry.phar = phar;
  	entry.fp_type = PHAR_MOD;
  	entry.fp = NULL;
  	entry.filename = NULL;
  
  	if (phar->is_persistent) {
  		if (error) {
  			spprintf(error, 0, "internal error: attempt to flush cached tar-based phar \"%s\"", phar->fname);
  		}
  		return EOF;
  	}
  
  	if (phar->is_data) {
  		goto nostub;
  	}
  
  	/* set alias */
  	if (!phar->is_temporary_alias && phar->alias_len) {
  		entry.filename = estrndup(".phar/alias.txt", sizeof(".phar/alias.txt")-1);
  		entry.filename_len = sizeof(".phar/alias.txt")-1;
  		entry.fp = php_stream_fopen_tmpfile();
  		if (entry.fp == NULL) {
  			efree(entry.filename);
  			spprintf(error, 0, "phar error: unable to create temporary file");
  			return -1;
  		}
  		if (phar->alias_len != php_stream_write(entry.fp, phar->alias, phar->alias_len)) {
  			if (error) {
  				spprintf(error, 0, "unable to set alias in tar-based phar \"%s\"", phar->fname);
  			}
  			php_stream_close(entry.fp);
  			efree(entry.filename);
  			return EOF;
  		}
  
  		entry.uncompressed_filesize = phar->alias_len;
  
  		zend_hash_str_update_mem(&phar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info));
  		/* At this point the entry is saved into the manifest. The manifest destroy
  			routine will care about any resources to be freed. */
  	} else {
  		zend_hash_str_del(&phar->manifest, ".phar/alias.txt", sizeof(".phar/alias.txt")-1);
  	}
  
  	/* set stub */
  	if (user_stub && !defaultstub) {
  		char *pos;
  		if (len < 0) {
  			/* resource passed in */
  			if (!(php_stream_from_zval_no_verify(stubfile, (zval *)user_stub))) {
  				if (error) {
  					spprintf(error, 0, "unable to access resource to copy stub to new tar-based phar \"%s\"", phar->fname);
  				}
  				return EOF;
  			}
  			if (len == -1) {
  				len = PHP_STREAM_COPY_ALL;
  			} else {
  				len = -len;
  			}
  			user_stub = 0;
  
  			// TODO: refactor to avoid reallocation ???
  //???		len = php_stream_copy_to_mem(stubfile, &user_stub, len, 0)
  			{
  				zend_string *str = php_stream_copy_to_mem(stubfile, len, 0);
  				if (str) {
  					len = ZSTR_LEN(str);
  					user_stub = estrndup(ZSTR_VAL(str), ZSTR_LEN(str));
  					zend_string_release_ex(str, 0);
  				} else {
  					user_stub = NULL;
  					len = 0;
  				}
  			}
  
  			if (!len || !user_stub) {
  				if (error) {
  					spprintf(error, 0, "unable to read resource to copy stub to new tar-based phar \"%s\"", phar->fname);
  				}
  				return EOF;
  			}
  			free_user_stub = 1;
  		} else {
  			free_user_stub = 0;
  		}
  
  		tmp = estrndup(user_stub, len);
  		if ((pos = php_stristr(tmp, halt_stub, len, sizeof(halt_stub) - 1)) == NULL) {
  			efree(tmp);
  			if (error) {
  				spprintf(error, 0, "illegal stub for tar-based phar \"%s\"", phar->fname);
  			}
  			if (free_user_stub) {
  				efree(user_stub);
  			}
  			return EOF;
  		}
  		pos = user_stub + (pos - tmp);
  		efree(tmp);
  
  		len = pos - user_stub + 18;
  		entry.fp = php_stream_fopen_tmpfile();
  		if (entry.fp == NULL) {
  			spprintf(error, 0, "phar error: unable to create temporary file");
  			return EOF;
  		}
  		entry.uncompressed_filesize = len + 5;
  
  		if ((size_t)len != php_stream_write(entry.fp, user_stub, len)
  		||            5 != php_stream_write(entry.fp, " ?>\r\n", 5)) {
  			if (error) {
  				spprintf(error, 0, "unable to create stub from string in new tar-based phar \"%s\"", phar->fname);
  			}
  			if (free_user_stub) {
  				efree(user_stub);
  			}
  			php_stream_close(entry.fp);
  			return EOF;
  		}
  
  		entry.filename = estrndup(".phar/stub.php", sizeof(".phar/stub.php")-1);
  		entry.filename_len = sizeof(".phar/stub.php")-1;
  		zend_hash_str_update_mem(&phar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info));
  
  		if (free_user_stub) {
  			efree(user_stub);
  		}
  	} else {
  		/* Either this is a brand new phar (add the stub), or the default stub is required (overwrite the stub) */
  		entry.fp = php_stream_fopen_tmpfile();
  		if (entry.fp == NULL) {
  			spprintf(error, 0, "phar error: unable to create temporary file");
  			return EOF;
  		}
  		if (sizeof(newstub)-1 != php_stream_write(entry.fp, newstub, sizeof(newstub)-1)) {
  			php_stream_close(entry.fp);
  			if (error) {
  				spprintf(error, 0, "unable to %s stub in%star-based phar \"%s\", failed", user_stub ? "overwrite" : "create", user_stub ? " " : " new ", phar->fname);
  			}
  			return EOF;
  		}
  
  		entry.uncompressed_filesize = entry.compressed_filesize = sizeof(newstub) - 1;
  		entry.filename = estrndup(".phar/stub.php", sizeof(".phar/stub.php")-1);
  		entry.filename_len = sizeof(".phar/stub.php")-1;
  
  		if (!defaultstub) {
  			if (!zend_hash_str_exists(&phar->manifest, ".phar/stub.php", sizeof(".phar/stub.php")-1)) {
  				if (NULL == zend_hash_str_add_mem(&phar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info))) {
  					php_stream_close(entry.fp);
  					efree(entry.filename);
  					if (error) {
  						spprintf(error, 0, "unable to create stub in tar-based phar \"%s\"", phar->fname);
  					}
  					return EOF;
  				}
  			} else {
  				php_stream_close(entry.fp);
  				efree(entry.filename);
  			}
  		} else {
  			zend_hash_str_update_mem(&phar->manifest, entry.filename, entry.filename_len, (void*)&entry, sizeof(phar_entry_info));
  		}
  	}
  nostub:
  	if (phar->fp && !phar->is_brandnew) {
  		oldfile = phar->fp;
  		closeoldfile = 0;
  		php_stream_rewind(oldfile);
  	} else {
  		oldfile = php_stream_open_wrapper(phar->fname, "rb", 0, NULL);
  		closeoldfile = oldfile != NULL;
  	}
  
  	newfile = php_stream_fopen_tmpfile();
  	if (!newfile) {
  		if (error) {
  			spprintf(error, 0, "unable to create temporary file");
  		}
  		if (closeoldfile) {
  			php_stream_close(oldfile);
  		}
  		return EOF;
  	}
  
  	pass.old = oldfile;
  	pass.new = newfile;
  	pass.error = error;
  	pass.free_fp = 1;
  	pass.free_ufp = 1;
  
  	if (Z_TYPE(phar->metadata) != IS_UNDEF) {
  		phar_entry_info *mentry;
  		if (NULL != (mentry = zend_hash_str_find_ptr(&(phar->manifest), ".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1))) {
  			if (ZEND_HASH_APPLY_KEEP != phar_tar_setmetadata(&phar->metadata, mentry, error)) {
  				if (closeoldfile) {
  					php_stream_close(oldfile);
  				}
  				return EOF;
  			}
  		} else {
  			phar_entry_info newentry = {0};
  
  			newentry.filename = estrndup(".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1);
  			newentry.filename_len = sizeof(".phar/.metadata.bin")-1;
  			newentry.phar = phar;
  			newentry.tar_type = TAR_FILE;
  			newentry.is_tar = 1;
  
  			if (NULL == (mentry = zend_hash_str_add_mem(&(phar->manifest), ".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1, (void *)&newentry, sizeof(phar_entry_info)))) {
  				spprintf(error, 0, "phar tar error: unable to add magic metadata file to manifest for phar archive \"%s\"", phar->fname);
  				if (closeoldfile) {
  					php_stream_close(oldfile);
  				}
  				return EOF;
  			}
  
  			if (ZEND_HASH_APPLY_KEEP != phar_tar_setmetadata(&phar->metadata, mentry, error)) {
  				zend_hash_str_del(&(phar->manifest), ".phar/.metadata.bin", sizeof(".phar/.metadata.bin")-1);
  				if (closeoldfile) {
  					php_stream_close(oldfile);
  				}
  				return EOF;
  			}
  		}
  	}
  
  	zend_hash_apply_with_argument(&phar->manifest, phar_tar_setupmetadata, (void *) &pass);
  
  	if (error && *error) {
  		if (closeoldfile) {
  			php_stream_close(oldfile);
  		}
  
  		/* on error in the hash iterator above, error is set */
  		php_stream_close(newfile);
  		return EOF;
  	}
  
  	zend_hash_apply_with_argument(&phar->manifest, phar_tar_writeheaders, (void *) &pass);
  
  	/* add signature for executable tars or tars explicitly set with setSignatureAlgorithm */
  	if (!phar->is_data || phar->sig_flags) {
  		if (FAILURE == phar_create_signature(phar, newfile, &signature, &signature_length, error)) {
  			if (error) {
  				char *save = *error;
  				spprintf(error, 0, "phar error: unable to write signature to tar-based phar: %s", save);
  				efree(save);
  			}
  
  			if (closeoldfile) {
  				php_stream_close(oldfile);
  			}
  
  			php_stream_close(newfile);
  			return EOF;
  		}
  
  		entry.filename = ".phar/signature.bin";
  		entry.filename_len = sizeof(".phar/signature.bin")-1;
  		entry.fp = php_stream_fopen_tmpfile();
  		if (entry.fp == NULL) {
  			spprintf(error, 0, "phar error: unable to create temporary file");
  			return EOF;
  		}
  #ifdef WORDS_BIGENDIAN
  # define PHAR_SET_32(var, buffer) \
  	*(uint32_t *)(var) = (((((unsigned char*)&(buffer))[3]) << 24) \
  		| ((((unsigned char*)&(buffer))[2]) << 16) \
  		| ((((unsigned char*)&(buffer))[1]) << 8) \
  		| (((unsigned char*)&(buffer))[0]))
  #else
  # define PHAR_SET_32(var, buffer) *(uint32_t *)(var) = (uint32_t) (buffer)
  #endif
  		PHAR_SET_32(sigbuf, phar->sig_flags);
  		PHAR_SET_32(sigbuf + 4, signature_length);
  
  		if (8 != php_stream_write(entry.fp, sigbuf, 8) || signature_length != php_stream_write(entry.fp, signature, signature_length)) {
  			efree(signature);
  			if (error) {
  				spprintf(error, 0, "phar error: unable to write signature to tar-based phar %s", phar->fname);
  			}
  
  			if (closeoldfile) {
  				php_stream_close(oldfile);
  			}
  			php_stream_close(newfile);
  			return EOF;
  		}
  
  		efree(signature);
  		entry.uncompressed_filesize = entry.compressed_filesize = signature_length + 8;
  		/* throw out return value and write the signature */
  		entry.filename_len = phar_tar_writeheaders_int(&entry, (void *)&pass);
  
  		if (error && *error) {
  			if (closeoldfile) {
  				php_stream_close(oldfile);
  			}
  			/* error is set by writeheaders */
  			php_stream_close(newfile);
  			return EOF;
  		}
  	} /* signature */
  
  	/* add final zero blocks */
  	buf = (char *) ecalloc(1024, 1);
  	php_stream_write(newfile, buf, 1024);
  	efree(buf);
  
  	if (closeoldfile) {
  		php_stream_close(oldfile);
  	}
  
  	/* on error in the hash iterator above, error is set */
  	if (error && *error) {
  		php_stream_close(newfile);
  		return EOF;
  	}
  
  	if (phar->fp && pass.free_fp) {
  		php_stream_close(phar->fp);
  	}
  
  	if (phar->ufp) {
  		if (pass.free_ufp) {
  			php_stream_close(phar->ufp);
  		}
  		phar->ufp = NULL;
  	}
  
  	phar->is_brandnew = 0;
  	php_stream_rewind(newfile);
  
  	if (phar->donotflush) {
  		/* deferred flush */
  		phar->fp = newfile;
  	} else {
  		phar->fp = php_stream_open_wrapper(phar->fname, "w+b", IGNORE_URL|STREAM_MUST_SEEK|REPORT_ERRORS, NULL);
  		if (!phar->fp) {
  			phar->fp = newfile;
  			if (error) {
  				spprintf(error, 0, "unable to open new phar \"%s\" for writing", phar->fname);
  			}
  			return EOF;
  		}
  
  		if (phar->flags & PHAR_FILE_COMPRESSED_GZ) {
  			php_stream_filter *filter;
  			/* to properly compress, we have to tell zlib to add a zlib header */
  			zval filterparams;
  
  			array_init(&filterparams);
  /* this is defined in zlib's zconf.h */
  #ifndef MAX_WBITS
  #define MAX_WBITS 15
  #endif
  			add_assoc_long(&filterparams, "window", MAX_WBITS + 16);
  			filter = php_stream_filter_create("zlib.deflate", &filterparams, php_stream_is_persistent(phar->fp));
  			zend_array_destroy(Z_ARR(filterparams));
  
  			if (!filter) {
  				/* copy contents uncompressed rather than lose them */
  				php_stream_copy_to_stream_ex(newfile, phar->fp, PHP_STREAM_COPY_ALL, NULL);
  				php_stream_close(newfile);
  				if (error) {
  					spprintf(error, 4096, "unable to compress all contents of phar \"%s\" using zlib, PHP versions older than 5.2.6 have a buggy zlib", phar->fname);
  				}
  				return EOF;
  			}
  
  			php_stream_filter_append(&phar->fp->writefilters, filter);
  			php_stream_copy_to_stream_ex(newfile, phar->fp, PHP_STREAM_COPY_ALL, NULL);
  			php_stream_filter_flush(filter, 1);
  			php_stream_filter_remove(filter, 1);
  			php_stream_close(phar->fp);
  			/* use the temp stream as our base */
  			phar->fp = newfile;
  		} else if (phar->flags & PHAR_FILE_COMPRESSED_BZ2) {
  			php_stream_filter *filter;
  
  			filter = php_stream_filter_create("bzip2.compress", NULL, php_stream_is_persistent(phar->fp));
  			php_stream_filter_append(&phar->fp->writefilters, filter);
  			php_stream_copy_to_stream_ex(newfile, phar->fp, PHP_STREAM_COPY_ALL, NULL);
  			php_stream_filter_flush(filter, 1);
  			php_stream_filter_remove(filter, 1);
  			php_stream_close(phar->fp);
  			/* use the temp stream as our base */
  			phar->fp = newfile;
  		} else {
  			php_stream_copy_to_stream_ex(newfile, phar->fp, PHP_STREAM_COPY_ALL, NULL);
  			/* we could also reopen the file in "rb" mode but there is no need for that */
  			php_stream_close(newfile);
  		}
  	}
  	return EOF;
  }
  /* }}} */
  