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Diffstat (limited to 'depends/pack200/src/unpack200.cpp')
| -rw-r--r-- | depends/pack200/src/unpack200.cpp | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/depends/pack200/src/unpack200.cpp b/depends/pack200/src/unpack200.cpp deleted file mode 100644 index 22b7f3b0..00000000 --- a/depends/pack200/src/unpack200.cpp +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code 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 - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ -#include <sys/types.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stdarg.h> -#include <errno.h> -#include <assert.h> -#include <limits.h> -#include <time.h> -#include <stdint.h> - -#include "constants.h" -#include "utils.h" -#include "defines.h" -#include "bytes.h" -#include "coding.h" -#include "unpack200.h" -#include "unpack.h" -#include "zip.h" - -// Callback for fetching data, Unix style. -static int64_t read_input_via_stdio(unpacker *u, void *buf, int64_t minlen, int64_t maxlen) -{ - assert(u->infileptr != nullptr); - assert(minlen <= maxlen); // don't talk nonsense - int64_t numread = 0; - char *bufptr = (char *)buf; - while (numread < minlen) - { - // read available input, up to buf.length or maxlen - int readlen = (1 << 16); - if (readlen > (maxlen - numread)) - readlen = (int)(maxlen - numread); - int nr = 0; - - nr = (int)fread(bufptr, 1, readlen, u->infileptr); - if (nr <= 0) - { - if (errno != EINTR) - break; - nr = 0; - } - numread += nr; - bufptr += nr; - assert(numread <= maxlen); - } - return numread; -} - -enum -{ - EOF_MAGIC = 0, - BAD_MAGIC = -1 -}; - -static int read_magic(unpacker *u, char peek[], int peeklen) -{ - assert(peeklen == 4); // magic numbers are always 4 bytes - int64_t nr = (u->read_input_fn)(u, peek, peeklen, peeklen); - if (nr != peeklen) - { - return (nr == 0) ? EOF_MAGIC : BAD_MAGIC; - } - int magic = 0; - for (int i = 0; i < peeklen; i++) - { - magic <<= 8; - magic += peek[i] & 0xFF; - } - return magic; -} - -void unpack_200(FILE *input, FILE *output) -{ - unpacker u; - u.init(read_input_via_stdio); - - // initialize jar output - // the output takes ownership of the file handle - jar jarout; - jarout.init(&u); - jarout.jarfp = output; - - // the input doesn't - u.infileptr = input; - - // read the magic! - char peek[4]; - int magic; - magic = read_magic(&u, peek, (int)sizeof(peek)); - - // if it is a gzip encoded file, we need an extra gzip input filter - if ((magic & GZIP_MAGIC_MASK) == GZIP_MAGIC) - { - gunzip *gzin = NEW(gunzip, 1); - gzin->init(&u); - // FIXME: why the side effects? WHY? - u.gzin->start(magic); - u.start(); - } - else - { - // otherwise, feed the bytes to the unpacker directly - u.start(peek, sizeof(peek)); - } - - // Note: The checks to u.aborting() are necessary to gracefully - // terminate processing when the first segment throws an error. - for (;;) - { - // Each trip through this loop unpacks one segment - // and then resets the unpacker. - for (unpacker::file *filep; (filep = u.get_next_file()) != nullptr;) - { - u.write_file_to_jar(filep); - } - - // Peek ahead for more data. - magic = read_magic(&u, peek, (int)sizeof(peek)); - if (magic != (int)JAVA_PACKAGE_MAGIC) - { - // we do not feel strongly about this kind of thing... - /* - if (magic != EOF_MAGIC) - unpack_abort("garbage after end of pack archive"); - */ - break; // all done - } - - // Release all storage from parsing the old segment. - u.reset(); - // Restart, beginning with the peek-ahead. - u.start(peek, sizeof(peek)); - } - u.finish(); - u.free(); // tidy up malloc blocks - fclose(input); -} |