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Merge "Remove libzipfile."

This commit is contained in:
Narayan Kamath 2015-03-23 10:49:06 +00:00 committed by Gerrit Code Review
parent 1d792dd416 766adf9f31
commit fd26252da2
8 changed files with 0 additions and 816 deletions
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58
include/zipfile/zipfile.h
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@ -1,58 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _ZIPFILE_ZIPFILE_H
#define _ZIPFILE_ZIPFILE_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef void* zipfile_t;
typedef void* zipentry_t;
// Provide a buffer. Returns NULL on failure.
zipfile_t init_zipfile(const void* data, size_t size);
// Release the zipfile resources.
void release_zipfile(zipfile_t file);
// Get a named entry object. Returns NULL if it doesn't exist
// or if we won't be able to decompress it. The zipentry_t is
// freed by release_zipfile()
zipentry_t lookup_zipentry(zipfile_t file, const char* entryName);
// Return the size of the entry.
size_t get_zipentry_size(zipentry_t entry);
// return the filename of this entry, you own the memory returned
char* get_zipentry_name(zipentry_t entry);
// The buffer must be 1.001 times the buffer size returned
// by get_zipentry_size. Returns nonzero on failure.
int decompress_zipentry(zipentry_t entry, void* buf, int bufsize);
// iterate through the entries in the zip file. pass a pointer to
// a void* initialized to NULL to start. Returns NULL when done
zipentry_t iterate_zipfile(zipfile_t file, void** cookie);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // _ZIPFILE_ZIPFILE_H

48
libzipfile/Android.mk
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LOCAL_PATH:= $(call my-dir)
# build host static library
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= \
centraldir.c \
zipfile.c
LOCAL_STATIC_LIBRARIES := libz
LOCAL_MODULE:= libzipfile
LOCAL_CFLAGS := -Werror
LOCAL_MULTILIB := both
include $(BUILD_HOST_STATIC_LIBRARY)
# build device static library
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= \
centraldir.c \
zipfile.c
LOCAL_STATIC_LIBRARIES := libz
LOCAL_MODULE:= libzipfile
LOCAL_CFLAGS := -Werror
include $(BUILD_STATIC_LIBRARY)
# build test_zipfile
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= \
test_zipfile.c
LOCAL_STATIC_LIBRARIES := libzipfile libz
LOCAL_MODULE := test_zipfile
LOCAL_CFLAGS := -Werror
include $(BUILD_HOST_EXECUTABLE)

0
libzipfile/MODULE_LICENSE_APACHE2
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190
libzipfile/NOTICE
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@ -1,190 +0,0 @@
Copyright (c) 2005-2008, The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
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direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
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not limited to compiled object code, generated documentation,
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"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
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(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
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represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
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"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
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excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
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2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
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You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
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the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
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7. Disclaimer of Warranty. Unless required by applicable law or
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
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END OF TERMS AND CONDITIONS

222
libzipfile/centraldir.c
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@ -1,222 +0,0 @@
#include "private.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <utils/Compat.h>
enum {
// finding the directory
CD_SIGNATURE = 0x06054b50,
EOCD_LEN = 22, // EndOfCentralDir len, excl. comment
MAX_COMMENT_LEN = 65535,
MAX_EOCD_SEARCH = MAX_COMMENT_LEN + EOCD_LEN,
// central directory entries
ENTRY_SIGNATURE = 0x02014b50,
ENTRY_LEN = 46, // CentralDirEnt len, excl. var fields
// local file header
LFH_SIZE = 30,
};
unsigned int
read_le_int(const unsigned char* buf)
{
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
}
unsigned int
read_le_short(const unsigned char* buf)
{
return buf[0] | (buf[1] << 8);
}
static int
read_central_dir_values(Zipfile* file, const unsigned char* buf, int len)
{
if (len < EOCD_LEN) {
// looks like ZIP file got truncated
fprintf(stderr, " Zip EOCD: expected >= %d bytes, found %d\n",
EOCD_LEN, len);
return -1;
}
file->disknum = read_le_short(&buf[0x04]);
file->diskWithCentralDir = read_le_short(&buf[0x06]);
file->entryCount = read_le_short(&buf[0x08]);
file->totalEntryCount = read_le_short(&buf[0x0a]);
file->centralDirSize = read_le_int(&buf[0x0c]);
file->centralDirOffest = read_le_int(&buf[0x10]);
file->commentLen = read_le_short(&buf[0x14]);
if (file->commentLen > 0) {
if (EOCD_LEN + file->commentLen > len) {
fprintf(stderr, "EOCD(%d) + comment(%d) exceeds len (%d)\n",
EOCD_LEN, file->commentLen, len);
return -1;
}
file->comment = buf + EOCD_LEN;
}
return 0;
}
static int
read_central_directory_entry(Zipfile* file, Zipentry* entry,
const unsigned char** buf, ssize_t* len)
{
const unsigned char* p;
unsigned short extraFieldLength;
unsigned short fileCommentLength;
unsigned long localHeaderRelOffset;
unsigned int dataOffset;
p = *buf;
if (*len < ENTRY_LEN) {
fprintf(stderr, "cde entry not large enough\n");
return -1;
}
if (read_le_int(&p[0x00]) != ENTRY_SIGNATURE) {
fprintf(stderr, "Whoops: didn't find expected signature\n");
return -1;
}
entry->compressionMethod = read_le_short(&p[0x0a]);
entry->compressedSize = read_le_int(&p[0x14]);
entry->uncompressedSize = read_le_int(&p[0x18]);
entry->fileNameLength = read_le_short(&p[0x1c]);
extraFieldLength = read_le_short(&p[0x1e]);
fileCommentLength = read_le_short(&p[0x20]);
localHeaderRelOffset = read_le_int(&p[0x2a]);
p += ENTRY_LEN;
// filename
if (entry->fileNameLength != 0) {
entry->fileName = p;
} else {
entry->fileName = NULL;
}
p += entry->fileNameLength;
// extra field
p += extraFieldLength;
// comment, if any
p += fileCommentLength;
*buf = p;
// the size of the extraField in the central dir is how much data there is,
// but the one in the local file header also contains some padding.
p = file->buf + localHeaderRelOffset;
extraFieldLength = read_le_short(&p[0x1c]);
dataOffset = localHeaderRelOffset + LFH_SIZE
+ entry->fileNameLength + extraFieldLength;
entry->data = file->buf + dataOffset;
#if 0
printf("file->buf=%p entry->data=%p dataOffset=%x localHeaderRelOffset=%d "
"entry->fileNameLength=%d extraFieldLength=%d\n",
file->buf, entry->data, dataOffset, localHeaderRelOffset,
entry->fileNameLength, extraFieldLength);
#endif
return 0;
}
/*
* Find the central directory and read the contents.
*
* The fun thing about ZIP archives is that they may or may not be
* readable from start to end. In some cases, notably for archives
* that were written to stdout, the only length information is in the
* central directory at the end of the file.
*
* Of course, the central directory can be followed by a variable-length
* comment field, so we have to scan through it backwards. The comment
* is at most 64K, plus we have 18 bytes for the end-of-central-dir stuff
* itself, plus apparently sometimes people throw random junk on the end
* just for the fun of it.
*
* This is all a little wobbly. If the wrong value ends up in the EOCD
* area, we're hosed. This appears to be the way that everbody handles
* it though, so we're in pretty good company if this fails.
*/
int
read_central_dir(Zipfile *file)
{
int err;
const unsigned char* buf = file->buf;
ZD_TYPE bufsize = file->bufsize;
const unsigned char* eocd;
const unsigned char* p;
const unsigned char* start;
ssize_t len;
int i;
// too small to be a ZIP archive?
if (bufsize < EOCD_LEN) {
fprintf(stderr, "Length is " ZD " -- too small\n", bufsize);
goto bail;
}
// find the end-of-central-dir magic
if (bufsize > MAX_EOCD_SEARCH) {
start = buf + bufsize - MAX_EOCD_SEARCH;
} else {
start = buf;
}
p = buf + bufsize - 4;
while (p >= start) {
if (*p == 0x50 && read_le_int(p) == CD_SIGNATURE) {
eocd = p;
break;
}
p--;
}
if (p < start) {
fprintf(stderr, "EOCD not found, not Zip\n");
goto bail;
}
// extract eocd values
err = read_central_dir_values(file, eocd, (buf+bufsize)-eocd);
if (err != 0) {
goto bail;
}
if (file->disknum != 0
|| file->diskWithCentralDir != 0
|| file->entryCount != file->totalEntryCount) {
fprintf(stderr, "Archive spanning not supported\n");
goto bail;
}
// Loop through and read the central dir entries.
p = buf + file->centralDirOffest;
len = (buf+bufsize)-p;
for (i=0; i < file->totalEntryCount; i++) {
Zipentry* entry = malloc(sizeof(Zipentry));
memset(entry, 0, sizeof(Zipentry));
err = read_central_directory_entry(file, entry, &p, &len);
if (err != 0) {
fprintf(stderr, "read_central_directory_entry failed\n");
free(entry);
goto bail;
}
// add it to our list
entry->next = file->entries;
file->entries = entry;
}
return 0;
bail:
return -1;
}

45
libzipfile/private.h
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@ -1,45 +0,0 @@
#ifndef PRIVATE_H
#define PRIVATE_H
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct Zipentry {
unsigned long fileNameLength;
const unsigned char* fileName;
unsigned short compressionMethod;
unsigned int uncompressedSize;
unsigned int compressedSize;
const unsigned char* data;
struct Zipentry* next;
} Zipentry;
typedef struct Zipfile
{
const unsigned char *buf;
ssize_t bufsize;
// Central directory
unsigned short disknum; //mDiskNumber;
unsigned short diskWithCentralDir; //mDiskWithCentralDir;
unsigned short entryCount; //mNumEntries;
unsigned short totalEntryCount; //mTotalNumEntries;
unsigned int centralDirSize; //mCentralDirSize;
unsigned int centralDirOffest; // offset from first disk //mCentralDirOffset;
unsigned short commentLen; //mCommentLen;
const unsigned char* comment; //mComment;
Zipentry* entries;
} Zipfile;
int read_central_dir(Zipfile* file);
unsigned int read_le_int(const unsigned char* buf);
unsigned int read_le_short(const unsigned char* buf);
#endif // PRIVATE_H

94
libzipfile/test_zipfile.c
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@ -1,94 +0,0 @@
#include <zipfile/zipfile.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
void dump_zipfile(FILE* to, zipfile_t file);
int
main(int argc, char** argv)
{
FILE* f;
size_t size, unsize;
void* buf;
void* scratch;
zipfile_t zip;
zipentry_t entry;
int err;
enum { HUH, LIST, UNZIP } what = HUH;
if (strcmp(argv[2], "-l") == 0 && argc == 3) {
what = LIST;
}
else if (strcmp(argv[2], "-u") == 0 && argc == 5) {
what = UNZIP;
}
else {
fprintf(stderr, "usage: test_zipfile ZIPFILE -l\n"
" lists the files in the zipfile\n"
" test_zipfile ZIPFILE -u FILENAME SAVETO\n"
" saves FILENAME from the zip file into SAVETO\n");
return 1;
}
f = fopen(argv[1], "r");
if (f == NULL) {
fprintf(stderr, "couldn't open %s\n", argv[1]);
return 1;
}
fseek(f, 0, SEEK_END);
size = ftell(f);
rewind(f);
buf = malloc(size);
fread(buf, 1, size, f);
zip = init_zipfile(buf, size);
if (zip == NULL) {
fprintf(stderr, "inti_zipfile failed\n");
return 1;
}
fclose(f);
switch (what)
{
case HUH:
break;
case LIST:
dump_zipfile(stdout, zip);
break;
case UNZIP:
entry = lookup_zipentry(zip, argv[3]);
if (entry == NULL) {
fprintf(stderr, "zip file '%s' does not contain file '%s'\n",
argv[1], argv[1]);
return 1;
}
f = fopen(argv[4], "w");
if (f == NULL) {
fprintf(stderr, "can't open file for writing '%s'\n", argv[4]);
return 1;
}
unsize = get_zipentry_size(entry);
size = unsize * 1.001;
scratch = malloc(size);
printf("scratch=%p\n", scratch);
err = decompress_zipentry(entry, scratch, size);
if (err != 0) {
fprintf(stderr, "error decompressing file\n");
return 1;
}
fwrite(scratch, unsize, 1, f);
free(scratch);
fclose(f);
break;
}
free(buf);
return 0;
}

159
libzipfile/zipfile.c
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@ -1,159 +0,0 @@
#include <zipfile/zipfile.h>
#include "private.h"
#include <stdlib.h>
#include <string.h>
#include <zlib.h>
#define DEF_MEM_LEVEL 8 // normally in zutil.h?
zipfile_t
init_zipfile(const void* data, size_t size)
{
int err;
Zipfile *file = malloc(sizeof(Zipfile));
if (file == NULL) return NULL;
memset(file, 0, sizeof(Zipfile));
file->buf = data;
file->bufsize = size;
err = read_central_dir(file);
if (err != 0) goto fail;
return file;
fail:
free(file);
return NULL;
}
void
release_zipfile(zipfile_t f)
{
Zipfile* file = (Zipfile*)f;
Zipentry* entry = file->entries;
while (entry) {
Zipentry* next = entry->next;
free(entry);
entry = next;
}
free(file);
}
zipentry_t
lookup_zipentry(zipfile_t f, const char* entryName)
{
Zipfile* file = (Zipfile*)f;
Zipentry* entry = file->entries;
while (entry) {
if (0 == memcmp(entryName, entry->fileName, entry->fileNameLength)) {
return entry;
}
entry = entry->next;
}
return NULL;
}
size_t
get_zipentry_size(zipentry_t entry)
{
return ((Zipentry*)entry)->uncompressedSize;
}
char*
get_zipentry_name(zipentry_t entry)
{
Zipentry* e = (Zipentry*)entry;
int l = e->fileNameLength;
char* s = malloc(l+1);
memcpy(s, e->fileName, l);
s[l] = '\0';
return s;
}
enum {
STORED = 0,
DEFLATED = 8
};
static int
inflate_wrapper(unsigned char* out, int unlen, const unsigned char* in, int clen)
{
z_stream zstream;
int err = 0;
int zerr;
memset(&zstream, 0, sizeof(zstream));
zstream.zalloc = Z_NULL;
zstream.zfree = Z_NULL;
zstream.opaque = Z_NULL;
zstream.next_in = (void*)in;
zstream.avail_in = clen;
zstream.next_out = (Bytef*) out;
zstream.avail_out = unlen;
zstream.data_type = Z_UNKNOWN;
// Use the undocumented "negative window bits" feature to tell zlib
// that there's no zlib header waiting for it.
zerr = inflateInit2(&zstream, -MAX_WBITS);
if (zerr != Z_OK) {
return -1;
}
// uncompress the data
zerr = inflate(&zstream, Z_FINISH);
if (zerr != Z_STREAM_END) {
fprintf(stderr, "zerr=%d Z_STREAM_END=%d total_out=%lu\n", zerr, Z_STREAM_END,
zstream.total_out);
err = -1;
}
inflateEnd(&zstream);
return err;
}
int
decompress_zipentry(zipentry_t e, void* buf, int bufsize)
{
Zipentry* entry = (Zipentry*)e;
switch (entry->compressionMethod)
{
case STORED:
memcpy(buf, entry->data, entry->uncompressedSize);
return 0;
case DEFLATED:
return inflate_wrapper(buf, bufsize, entry->data, entry->compressedSize);
default:
return -1;
}
}
void
dump_zipfile(FILE* to, zipfile_t file)
{
Zipfile* zip = (Zipfile*)file;
Zipentry* entry = zip->entries;
int i;
fprintf(to, "entryCount=%d\n", zip->entryCount);
for (i=0; i<zip->entryCount; i++) {
fprintf(to, " file \"");
fwrite(entry->fileName, entry->fileNameLength, 1, to);
fprintf(to, "\"\n");
entry = entry->next;
}
}
zipentry_t
iterate_zipfile(zipfile_t file, void** cookie)
{
Zipentry* entry = (Zipentry*)*cookie;
if (entry == NULL) {
Zipfile* zip = (Zipfile*)file;
*cookie = zip->entries;
return *cookie;
} else {
entry = entry->next;
*cookie = entry;
return entry;
}
}