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Diffstat (limited to 'lib/wrappers/zip/libzip_all.c')
| -rwxr-xr-x | lib/wrappers/zip/libzip_all.c | 4189 |
1 files changed, 0 insertions, 4189 deletions
diff --git a/lib/wrappers/zip/libzip_all.c b/lib/wrappers/zip/libzip_all.c deleted file mode 100755 index 797374b29..000000000 --- a/lib/wrappers/zip/libzip_all.c +++ /dev/null @@ -1,4189 +0,0 @@ -/* - zipint.h -- internal declarations. - Copyright (C) 1999-2008 Dieter Baron and Thomas Klausner - - This file is part of libzip, a library to manipulate ZIP archives. - The authors can be contacted at <libzip@nih.at> - - 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. - 3. The names of the authors may not be used to endorse or promote - products derived from this software without specific prior - written permission. - - THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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. -*/ - -#include <zlib.h> - -/* -#ifdef _MSC_VER -#define ZIP_EXTERN __declspec(dllimport) -#endif -*/ - -/* - zip.h -- exported declarations. - Copyright (C) 1999-2008 Dieter Baron and Thomas Klausner - - This file is part of libzip, a library to manipulate ZIP archives. - The authors can be contacted at <libzip@nih.at> - - 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. - 3. The names of the authors may not be used to endorse or promote - products derived from this software without specific prior - written permission. - - THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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. -*/ - - -#ifndef ZIP_EXTERN -#define ZIP_EXTERN -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -#include <sys/types.h> -#include <stdio.h> -#include <time.h> - -/* flags for zip_open */ - -#define ZIP_CREATE 1 -#define ZIP_EXCL 2 -#define ZIP_CHECKCONS 4 - - -/* flags for zip_name_locate, zip_fopen, zip_stat, ... */ - -#define ZIP_FL_NOCASE 1 /* ignore case on name lookup */ -#define ZIP_FL_NODIR 2 /* ignore directory component */ -#define ZIP_FL_COMPRESSED 4 /* read compressed data */ -#define ZIP_FL_UNCHANGED 8 /* use original data, ignoring changes */ -#define ZIP_FL_RECOMPRESS 16 /* force recompression of data */ - -/* archive global flags flags */ - -#define ZIP_AFL_TORRENT 1 /* torrent zipped */ - -/* libzip error codes */ - -#define ZIP_ER_OK 0 /* N No error */ -#define ZIP_ER_MULTIDISK 1 /* N Multi-disk zip archives not supported */ -#define ZIP_ER_RENAME 2 /* S Renaming temporary file failed */ -#define ZIP_ER_CLOSE 3 /* S Closing zip archive failed */ -#define ZIP_ER_SEEK 4 /* S Seek error */ -#define ZIP_ER_READ 5 /* S Read error */ -#define ZIP_ER_WRITE 6 /* S Write error */ -#define ZIP_ER_CRC 7 /* N CRC error */ -#define ZIP_ER_ZIPCLOSED 8 /* N Containing zip archive was closed */ -#define ZIP_ER_NOENT 9 /* N No such file */ -#define ZIP_ER_EXISTS 10 /* N File already exists */ -#define ZIP_ER_OPEN 11 /* S Can't open file */ -#define ZIP_ER_TMPOPEN 12 /* S Failure to create temporary file */ -#define ZIP_ER_ZLIB 13 /* Z Zlib error */ -#define ZIP_ER_MEMORY 14 /* N Malloc failure */ -#define ZIP_ER_CHANGED 15 /* N Entry has been changed */ -#define ZIP_ER_COMPNOTSUPP 16 /* N Compression method not supported */ -#define ZIP_ER_EOF 17 /* N Premature EOF */ -#define ZIP_ER_INVAL 18 /* N Invalid argument */ -#define ZIP_ER_NOZIP 19 /* N Not a zip archive */ -#define ZIP_ER_INTERNAL 20 /* N Internal error */ -#define ZIP_ER_INCONS 21 /* N Zip archive inconsistent */ -#define ZIP_ER_REMOVE 22 /* S Can't remove file */ -#define ZIP_ER_DELETED 23 /* N Entry has been deleted */ - - -/* type of system error value */ - -#define ZIP_ET_NONE 0 /* sys_err unused */ -#define ZIP_ET_SYS 1 /* sys_err is errno */ -#define ZIP_ET_ZLIB 2 /* sys_err is zlib error code */ - -/* compression methods */ - -#define ZIP_CM_DEFAULT -1 /* better of deflate or store */ -#define ZIP_CM_STORE 0 /* stored (uncompressed) */ -#define ZIP_CM_SHRINK 1 /* shrunk */ -#define ZIP_CM_REDUCE_1 2 /* reduced with factor 1 */ -#define ZIP_CM_REDUCE_2 3 /* reduced with factor 2 */ -#define ZIP_CM_REDUCE_3 4 /* reduced with factor 3 */ -#define ZIP_CM_REDUCE_4 5 /* reduced with factor 4 */ -#define ZIP_CM_IMPLODE 6 /* imploded */ -/* 7 - Reserved for Tokenizing compression algorithm */ -#define ZIP_CM_DEFLATE 8 /* deflated */ -#define ZIP_CM_DEFLATE64 9 /* deflate64 */ -#define ZIP_CM_PKWARE_IMPLODE 10 /* PKWARE imploding */ -/* 11 - Reserved by PKWARE */ -#define ZIP_CM_BZIP2 12 /* compressed using BZIP2 algorithm */ -/* 13 - Reserved by PKWARE */ -#define ZIP_CM_LZMA 14 /* LZMA (EFS) */ -/* 15-17 - Reserved by PKWARE */ -#define ZIP_CM_TERSE 18 /* compressed using IBM TERSE (new) */ -#define ZIP_CM_LZ77 19 /* IBM LZ77 z Architecture (PFS) */ -#define ZIP_CM_WAVPACK 97 /* WavPack compressed data */ -#define ZIP_CM_PPMD 98 /* PPMd version I, Rev 1 */ - -/* encryption methods */ - -#define ZIP_EM_NONE 0 /* not encrypted */ -#define ZIP_EM_TRAD_PKWARE 1 /* traditional PKWARE encryption */ -#if 0 /* Strong Encryption Header not parsed yet */ -#define ZIP_EM_DES 0x6601 /* strong encryption: DES */ -#define ZIP_EM_RC2_OLD 0x6602 /* strong encryption: RC2, version < 5.2 */ -#define ZIP_EM_3DES_168 0x6603 -#define ZIP_EM_3DES_112 0x6609 -#define ZIP_EM_AES_128 0x660e -#define ZIP_EM_AES_192 0x660f -#define ZIP_EM_AES_256 0x6610 -#define ZIP_EM_RC2 0x6702 /* strong encryption: RC2, version >= 5.2 */ -#define ZIP_EM_RC4 0x6801 -#endif -#define ZIP_EM_UNKNOWN 0xffff /* unknown algorithm */ - -typedef long myoff_t; /* XXX: 64 bit support */ - -enum zip_source_cmd { - ZIP_SOURCE_OPEN, /* prepare for reading */ - ZIP_SOURCE_READ, /* read data */ - ZIP_SOURCE_CLOSE, /* reading is done */ - ZIP_SOURCE_STAT, /* get meta information */ - ZIP_SOURCE_ERROR, /* get error information */ - ZIP_SOURCE_FREE /* cleanup and free resources */ -}; - -typedef ssize_t (*zip_source_callback)(void *state, void *data, - size_t len, enum zip_source_cmd cmd); - -struct zip_stat { - const char *name; /* name of the file */ - int index; /* index within archive */ - unsigned int crc; /* crc of file data */ - time_t mtime; /* modification time */ - myoff_t size; /* size of file (uncompressed) */ - myoff_t comp_size; /* size of file (compressed) */ - unsigned short comp_method; /* compression method used */ - unsigned short encryption_method; /* encryption method used */ -}; - -struct zip; -struct zip_file; -struct zip_source; - - -ZIP_EXTERN int zip_add(struct zip *, const char *, struct zip_source *); -ZIP_EXTERN int zip_add_dir(struct zip *, const char *); -ZIP_EXTERN int zip_close(struct zip *); -ZIP_EXTERN int zip_delete(struct zip *, int); -ZIP_EXTERN void zip_error_clear(struct zip *); -ZIP_EXTERN void zip_error_get(struct zip *, int *, int *); -ZIP_EXTERN int zip_error_get_sys_type(int); -ZIP_EXTERN int zip_error_to_str(char *, size_t, int, int); -ZIP_EXTERN int zip_fclose(struct zip_file *); -ZIP_EXTERN void zip_file_error_clear(struct zip_file *); -ZIP_EXTERN void zip_file_error_get(struct zip_file *, int *, int *); -ZIP_EXTERN const char *zip_file_strerror(struct zip_file *); -ZIP_EXTERN struct zip_file *zip_fopen(struct zip *, const char *, int); -ZIP_EXTERN struct zip_file *zip_fopen_index(struct zip *, int, int); -ZIP_EXTERN ssize_t zip_fread(struct zip_file *, void *, size_t); -ZIP_EXTERN const char *zip_get_archive_comment(struct zip *, int *, int); -ZIP_EXTERN int zip_get_archive_flag(struct zip *, int, int); -ZIP_EXTERN const char *zip_get_file_comment(struct zip *, int, int *, int); -ZIP_EXTERN const char *zip_get_name(struct zip *, int, int); -ZIP_EXTERN int zip_get_num_files(struct zip *); -ZIP_EXTERN int zip_name_locate(struct zip *, const char *, int); -ZIP_EXTERN struct zip *zip_open(const char *, int, int *); -ZIP_EXTERN int zip_rename(struct zip *, int, const char *); -ZIP_EXTERN int zip_replace(struct zip *, int, struct zip_source *); -ZIP_EXTERN int zip_set_archive_comment(struct zip *, const char *, int); -ZIP_EXTERN int zip_set_archive_flag(struct zip *, int, int); -ZIP_EXTERN int zip_set_file_comment(struct zip *, int, const char *, int); -ZIP_EXTERN struct zip_source *zip_source_buffer(struct zip *, const void *, - myoff_t, int); -ZIP_EXTERN struct zip_source *zip_source_file(struct zip *, const char *, - myoff_t, myoff_t); -ZIP_EXTERN struct zip_source *zip_source_filep(struct zip *, FILE *, - myoff_t, myoff_t); -ZIP_EXTERN void zip_source_free(struct zip_source *); -ZIP_EXTERN struct zip_source *zip_source_function(struct zip *, - zip_source_callback, void *); -ZIP_EXTERN struct zip_source *zip_source_zip(struct zip *, struct zip *, - int, int, myoff_t, myoff_t); -ZIP_EXTERN int zip_stat(struct zip *, const char *, int, struct zip_stat *); -ZIP_EXTERN int zip_stat_index(struct zip *, int, int, struct zip_stat *); -ZIP_EXTERN void zip_stat_init(struct zip_stat *); -ZIP_EXTERN const char *zip_strerror(struct zip *); -ZIP_EXTERN int zip_unchange(struct zip *, int); -ZIP_EXTERN int zip_unchange_all(struct zip *); -ZIP_EXTERN int zip_unchange_archive(struct zip *); - -#ifdef __cplusplus -} -#endif - - -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the declaration of `tzname', and to 0 if you don't. - */ -/* #undef HAVE_DECL_TZNAME */ - -#define HAVE_CONFIG_H 1 - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `fseeko' function. */ -#define HAVE_FSEEKO 1 - -/* Define to 1 if you have the `ftello' function. */ -#define HAVE_FTELLO 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `z' library (-lz). */ -#define HAVE_LIBZ 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the `mkstemp' function. */ -#define HAVE_MKSTEMP 1 - -/* Define to 1 if you have the `MoveFileExA' function. */ -/* #undef HAVE_MOVEFILEEXA */ - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if `tm_zone' is member of `struct tm'. */ -#define HAVE_STRUCT_TM_TM_ZONE 1 - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if your `struct tm' has `tm_zone'. Deprecated, use - `HAVE_STRUCT_TM_TM_ZONE' instead. */ -#define HAVE_TM_ZONE 1 - -/* Define to 1 if you don't have `tm_zone' but do have the external array - `tzname'. */ -/* #undef HAVE_TZNAME */ - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if your C compiler doesn't accept -c and -o together. */ -/* #undef NO_MINUS_C_MINUS_O */ - -/* Name of package */ -#define PACKAGE "libzip" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "libzip@nih.at" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "libzip" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "libzip 0.9" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "libzip" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "0.9" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Define to 1 if your <sys/time.h> declares `struct tm'. */ -/* #undef TM_IN_SYS_TIME */ - -/* Version number of package */ -#define VERSION "0.9" - - -#ifndef HAVE_MKSTEMP -int _zip_mkstemp(char *); -#define mkstemp _zip_mkstemp -#endif - -#ifdef HAVE_MOVEFILEEXA -#include <windows.h> -#define _zip_rename(s, t) \ - (!MoveFileExA((s), (t), \ - MOVEFILE_COPY_ALLOWED|MOVEFILE_REPLACE_EXISTING)) -#else -#define _zip_rename rename -#endif - -#ifndef HAVE_FSEEKO -#define fseeko(s, o, w) (fseek((s), (long int)(o), (w))) -#endif -#ifndef HAVE_FTELLO -#define ftello(s) ((long)ftell((s))) -#endif - - -#define CENTRAL_MAGIC "PK\1\2" -#define LOCAL_MAGIC "PK\3\4" -#define EOCD_MAGIC "PK\5\6" -#define DATADES_MAGIC "PK\7\8" -#define TORRENT_SIG "TORRENTZIPPED-" -#define TORRENT_SIG_LEN 14 -#define TORRENT_CRC_LEN 8 -#define TORRENT_MEM_LEVEL 8 -#define CDENTRYSIZE 46u -#define LENTRYSIZE 30 -#define MAXCOMLEN 65536 -#define EOCDLEN 22 -#define CDBUFSIZE (MAXCOMLEN+EOCDLEN) -#define BUFSIZE 8192 - - -/* state of change of a file in zip archive */ - -enum zip_state { ZIP_ST_UNCHANGED, ZIP_ST_DELETED, ZIP_ST_REPLACED, - ZIP_ST_ADDED, ZIP_ST_RENAMED }; - -/* constants for struct zip_file's member flags */ - -#define ZIP_ZF_EOF 1 /* EOF reached */ -#define ZIP_ZF_DECOMP 2 /* decompress data */ -#define ZIP_ZF_CRC 4 /* compute and compare CRC */ - -/* directory entry: general purpose bit flags */ - -#define ZIP_GPBF_ENCRYPTED 0x0001 /* is encrypted */ -#define ZIP_GPBF_DATA_DESCRIPTOR 0x0008 /* crc/size after file data */ -#define ZIP_GPBF_STRONG_ENCRYPTION 0x0040 /* uses strong encryption */ - -/* error information */ - -struct zip_error { - int zip_err; /* libzip error code (ZIP_ER_*) */ - int sys_err; /* copy of errno (E*) or zlib error code */ - char *str; /* string representation or NULL */ -}; - -/* zip archive, part of API */ - -struct zip { - char *zn; /* file name */ - FILE *zp; /* file */ - struct zip_error error; /* error information */ - - unsigned int flags; /* archive global flags */ - unsigned int ch_flags; /* changed archive global flags */ - - struct zip_cdir *cdir; /* central directory */ - char *ch_comment; /* changed archive comment */ - int ch_comment_len; /* length of changed zip archive - * comment, -1 if unchanged */ - int nentry; /* number of entries */ - int nentry_alloc; /* number of entries allocated */ - struct zip_entry *entry; /* entries */ - int nfile; /* number of opened files within archive */ - int nfile_alloc; /* number of files allocated */ - struct zip_file **file; /* opened files within archive */ -}; - -/* file in zip archive, part of API */ - -struct zip_file { - struct zip *za; /* zip archive containing this file */ - struct zip_error error; /* error information */ - int flags; /* -1: eof, >0: error */ - - int method; /* compression method */ - myoff_t fpos; /* position within zip file (fread/fwrite) */ - unsigned long bytes_left; /* number of bytes left to read */ - unsigned long cbytes_left; /* number of bytes of compressed data left */ - - unsigned long crc; /* CRC so far */ - unsigned long crc_orig; /* CRC recorded in archive */ - - char *buffer; - z_stream *zstr; -}; - -/* zip archive directory entry (central or local) */ - -struct zip_dirent { - unsigned short version_madeby; /* (c) version of creator */ - unsigned short version_needed; /* (cl) version needed to extract */ - unsigned short bitflags; /* (cl) general purpose bit flag */ - unsigned short comp_method; /* (cl) compression method used */ - time_t last_mod; /* (cl) time of last modification */ - unsigned int crc; /* (cl) CRC-32 of uncompressed data */ - unsigned int comp_size; /* (cl) size of commpressed data */ - unsigned int uncomp_size; /* (cl) size of uncommpressed data */ - char *filename; /* (cl) file name (NUL-terminated) */ - unsigned short filename_len; /* (cl) length of filename (w/o NUL) */ - char *extrafield; /* (cl) extra field */ - unsigned short extrafield_len; /* (cl) length of extra field */ - char *comment; /* (c) file comment */ - unsigned short comment_len; /* (c) length of file comment */ - unsigned short disk_number; /* (c) disk number start */ - unsigned short int_attrib; /* (c) internal file attributes */ - unsigned int ext_attrib; /* (c) external file attributes */ - unsigned int offset; /* (c) offset of local header */ -}; - -/* zip archive central directory */ - -struct zip_cdir { - struct zip_dirent *entry; /* directory entries */ - int nentry; /* number of entries */ - - unsigned int size; /* size of central direcotry */ - unsigned int offset; /* offset of central directory in file */ - char *comment; /* zip archive comment */ - unsigned short comment_len; /* length of zip archive comment */ -}; - - - -struct zip_source { - zip_source_callback f; - void *ud; -}; - -/* entry in zip archive directory */ - -struct zip_entry { - enum zip_state state; - struct zip_source *source; - char *ch_filename; - char *ch_comment; - int ch_comment_len; -}; - - - -extern const char * const _zip_err_str[]; -extern const int _zip_nerr_str; -extern const int _zip_err_type[]; - - - -#define ZIP_ENTRY_DATA_CHANGED(x) \ - ((x)->state == ZIP_ST_REPLACED \ - || (x)->state == ZIP_ST_ADDED) - - - -int _zip_cdir_compute_crc(struct zip *, uLong *); -void _zip_cdir_free(struct zip_cdir *); -struct zip_cdir *_zip_cdir_new(int, struct zip_error *); -int _zip_cdir_write(struct zip_cdir *, FILE *, struct zip_error *); - -void _zip_dirent_finalize(struct zip_dirent *); -void _zip_dirent_init(struct zip_dirent *); -int _zip_dirent_read(struct zip_dirent *, FILE *, - unsigned char **, unsigned int, int, struct zip_error *); -void _zip_dirent_torrent_normalize(struct zip_dirent *); -int _zip_dirent_write(struct zip_dirent *, FILE *, int, struct zip_error *); - -void _zip_entry_free(struct zip_entry *); -void _zip_entry_init(struct zip *, int); -struct zip_entry *_zip_entry_new(struct zip *); - -void _zip_error_clear(struct zip_error *); -void _zip_error_copy(struct zip_error *, struct zip_error *); -void _zip_error_fini(struct zip_error *); -void _zip_error_get(struct zip_error *, int *, int *); -void _zip_error_init(struct zip_error *); -void _zip_error_set(struct zip_error *, int, int); -const char *_zip_error_strerror(struct zip_error *); - -int _zip_file_fillbuf(void *, size_t, struct zip_file *); -unsigned int _zip_file_get_offset(struct zip *, int); - -int _zip_filerange_crc(FILE *, myoff_t, myoff_t, uLong *, struct zip_error *); - -struct zip_source *_zip_source_file_or_p(struct zip *, const char *, FILE *, - myoff_t, myoff_t); - -void _zip_free(struct zip *); -const char *_zip_get_name(struct zip *, int, int, struct zip_error *); -int _zip_local_header_read(struct zip *, int); -void *_zip_memdup(const void *, size_t, struct zip_error *); -int _zip_name_locate(struct zip *, const char *, int, struct zip_error *); -struct zip *_zip_new(struct zip_error *); -unsigned short _zip_read2(unsigned char **); -unsigned int _zip_read4(unsigned char **); -int _zip_replace(struct zip *, int, const char *, struct zip_source *); -int _zip_set_name(struct zip *, int, const char *); -int _zip_unchange(struct zip *, int, int); -void _zip_unchange_data(struct zip_entry *); - - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -const char * -_zip_error_strerror(struct zip_error *err) -{ - const char *zs, *ss; - char buf[128], *s; - - _zip_error_fini(err); - - if (err->zip_err < 0 || err->zip_err >= _zip_nerr_str) { - sprintf(buf, "Unknown error %d", err->zip_err); - zs = NULL; - ss = buf; - } - else { - zs = _zip_err_str[err->zip_err]; - - switch (_zip_err_type[err->zip_err]) { - case ZIP_ET_SYS: - ss = strerror(err->sys_err); - break; - - case ZIP_ET_ZLIB: - ss = zError(err->sys_err); - break; - - default: - ss = NULL; - } - } - - if (ss == NULL) - return zs; - else { - if ((s=(char *)malloc(strlen(ss) - + (zs ? strlen(zs)+2 : 0) + 1)) == NULL) - return _zip_err_str[ZIP_ER_MEMORY]; - - sprintf(s, "%s%s%s", - (zs ? zs : ""), - (zs ? ": " : ""), - ss); - err->str = s; - - return s; - } -} - -#include <stdlib.h> - - - -void -_zip_error_clear(struct zip_error *err) -{ - err->zip_err = ZIP_ER_OK; - err->sys_err = 0; -} - - - -void -_zip_error_copy(struct zip_error *dst, struct zip_error *src) -{ - dst->zip_err = src->zip_err; - dst->sys_err = src->sys_err; -} - - - -void -_zip_error_fini(struct zip_error *err) -{ - free(err->str); - err->str = NULL; -} - - - -void -_zip_error_get(struct zip_error *err, int *zep, int *sep) -{ - if (zep) - *zep = err->zip_err; - if (sep) { - if (zip_error_get_sys_type(err->zip_err) != ZIP_ET_NONE) - *sep = err->sys_err; - else - *sep = 0; - } -} - - - -void -_zip_error_init(struct zip_error *err) -{ - err->zip_err = ZIP_ER_OK; - err->sys_err = 0; - err->str = NULL; -} - - - -void -_zip_error_set(struct zip_error *err, int ze, int se) -{ - if (err) { - err->zip_err = ze; - err->sys_err = se; - } -} - - -#include <sys/types.h> -#include <sys/stat.h> - -#include <assert.h> -#include <ctype.h> -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> - -#ifndef O_BINARY -#define O_BINARY 0 -#endif - - - -int -_zip_mkstemp(char *path) -{ - int fd; - char *start, *trv; - struct stat sbuf; - pid_t pid; - - /* To guarantee multiple calls generate unique names even if - the file is not created. 676 different possibilities with 7 - or more X's, 26 with 6 or less. */ - static char xtra[2] = "aa"; - int xcnt = 0; - - pid = getpid(); - - /* Move to end of path and count trailing X's. */ - for (trv = path; *trv; ++trv) - if (*trv == 'X') - xcnt++; - else - xcnt = 0; - - /* Use at least one from xtra. Use 2 if more than 6 X's. */ - if (*(trv - 1) == 'X') - *--trv = xtra[0]; - if (xcnt > 6 && *(trv - 1) == 'X') - *--trv = xtra[1]; - - /* Set remaining X's to pid digits with 0's to the left. */ - while (*--trv == 'X') { - *trv = (pid % 10) + '0'; - pid /= 10; - } - - /* update xtra for next call. */ - if (xtra[0] != 'z') - xtra[0]++; - else { - xtra[0] = 'a'; - if (xtra[1] != 'z') - xtra[1]++; - else - xtra[1] = 'a'; - } - - /* - * check the target directory; if you have six X's and it - * doesn't exist this runs for a *very* long time. - */ - for (start = trv + 1;; --trv) { - if (trv <= path) - break; - if (*trv == '/') { - *trv = '\0'; - if (stat(path, &sbuf)) - return (0); - if (!S_ISDIR(sbuf.st_mode)) { - errno = ENOTDIR; - return (0); - } - *trv = '/'; - break; - } - } - - for (;;) { - if ((fd=open(path, O_CREAT|O_EXCL|O_RDWR|O_BINARY, 0600)) >= 0) - return (fd); - if (errno != EEXIST) - return (0); - - /* tricky little algorithm for backward compatibility */ - for (trv = start;;) { - if (!*trv) - return (0); - if (*trv == 'z') - *trv++ = 'a'; - else { - if (isdigit((unsigned char)*trv)) - *trv = 'a'; - else - ++*trv; - break; - } - } - } - /*NOTREACHED*/ -} - - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> - -static time_t _zip_d2u_time(int, int); -static char *_zip_readfpstr(FILE *, unsigned int, int, struct zip_error *); -static char *_zip_readstr(unsigned char **, int, int, struct zip_error *); -static void _zip_u2d_time(time_t, unsigned short *, unsigned short *); -static void _zip_write2(unsigned short, FILE *); -static void _zip_write4(unsigned int, FILE *); - - - -void -_zip_cdir_free(struct zip_cdir *cd) -{ - int i; - - if (!cd) - return; - - for (i=0; i<cd->nentry; i++) - _zip_dirent_finalize(cd->entry+i); - free(cd->comment); - free(cd->entry); - free(cd); -} - - - -struct zip_cdir * -_zip_cdir_new(int nentry, struct zip_error *error) -{ - struct zip_cdir *cd; - - if ((cd=(struct zip_cdir *)malloc(sizeof(*cd))) == NULL) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - return NULL; - } - - if ((cd->entry=(struct zip_dirent *)malloc(sizeof(*(cd->entry))*nentry)) - == NULL) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - free(cd); - return NULL; - } - - /* entries must be initialized by caller */ - - cd->nentry = nentry; - cd->size = cd->offset = 0; - cd->comment = NULL; - cd->comment_len = 0; - - return cd; -} - - - -int -_zip_cdir_write(struct zip_cdir *cd, FILE *fp, struct zip_error *error) -{ - int i; - - cd->offset = ftello(fp); - - for (i=0; i<cd->nentry; i++) { - if (_zip_dirent_write(cd->entry+i, fp, 0, error) != 0) - return -1; - } - - cd->size = ftello(fp) - cd->offset; - - /* clearerr(fp); */ - fwrite(EOCD_MAGIC, 1, 4, fp); - _zip_write4(0, fp); - _zip_write2((unsigned short)cd->nentry, fp); - _zip_write2((unsigned short)cd->nentry, fp); - _zip_write4(cd->size, fp); - _zip_write4(cd->offset, fp); - _zip_write2(cd->comment_len, fp); - fwrite(cd->comment, 1, cd->comment_len, fp); - - if (ferror(fp)) { - _zip_error_set(error, ZIP_ER_WRITE, errno); - return -1; - } - - return 0; -} - - - -void -_zip_dirent_finalize(struct zip_dirent *zde) -{ - free(zde->filename); - zde->filename = NULL; - free(zde->extrafield); - zde->extrafield = NULL; - free(zde->comment); - zde->comment = NULL; -} - - - -void -_zip_dirent_init(struct zip_dirent *de) -{ - de->version_madeby = 0; - de->version_needed = 20; /* 2.0 */ - de->bitflags = 0; - de->comp_method = 0; - de->last_mod = 0; - de->crc = 0; - de->comp_size = 0; - de->uncomp_size = 0; - de->filename = NULL; - de->filename_len = 0; - de->extrafield = NULL; - de->extrafield_len = 0; - de->comment = NULL; - de->comment_len = 0; - de->disk_number = 0; - de->int_attrib = 0; - de->ext_attrib = 0; - de->offset = 0; -} - - - -/* _zip_dirent_read(zde, fp, bufp, left, localp, error): - Fills the zip directory entry zde. - - If bufp is non-NULL, data is taken from there and bufp is advanced - by the amount of data used; no more than left bytes are used. - Otherwise data is read from fp as needed. - - If localp != 0, it reads a local header instead of a central - directory entry. - - Returns 0 if successful. On error, error is filled in and -1 is - returned. -*/ - -int -_zip_dirent_read(struct zip_dirent *zde, FILE *fp, - unsigned char **bufp, unsigned int left, int localp, - struct zip_error *error) -{ - unsigned char buf[CDENTRYSIZE]; - unsigned char *cur; - unsigned short dostime, dosdate; - unsigned int size; - - if (localp) - size = LENTRYSIZE; - else - size = CDENTRYSIZE; - - if (bufp) { - /* use data from buffer */ - cur = *bufp; - if (left < size) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return -1; - } - } - else { - /* read entry from disk */ - if ((fread(buf, 1, size, fp)<size)) { - _zip_error_set(error, ZIP_ER_READ, errno); - return -1; - } - left = size; - cur = buf; - } - - if (memcmp(cur, (localp ? LOCAL_MAGIC : CENTRAL_MAGIC), 4) != 0) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return -1; - } - cur += 4; - - - /* convert buffercontents to zip_dirent */ - - if (!localp) - zde->version_madeby = _zip_read2(&cur); - else - zde->version_madeby = 0; - zde->version_needed = _zip_read2(&cur); - zde->bitflags = _zip_read2(&cur); - zde->comp_method = _zip_read2(&cur); - - /* convert to time_t */ - dostime = _zip_read2(&cur); - dosdate = _zip_read2(&cur); - zde->last_mod = _zip_d2u_time(dostime, dosdate); - - zde->crc = _zip_read4(&cur); - zde->comp_size = _zip_read4(&cur); - zde->uncomp_size = _zip_read4(&cur); - - zde->filename_len = _zip_read2(&cur); - zde->extrafield_len = _zip_read2(&cur); - - if (localp) { - zde->comment_len = 0; - zde->disk_number = 0; - zde->int_attrib = 0; - zde->ext_attrib = 0; - zde->offset = 0; - } else { - zde->comment_len = _zip_read2(&cur); - zde->disk_number = _zip_read2(&cur); - zde->int_attrib = _zip_read2(&cur); - zde->ext_attrib = _zip_read4(&cur); - zde->offset = _zip_read4(&cur); - } - - zde->filename = NULL; - zde->extrafield = NULL; - zde->comment = NULL; - - if (bufp) { - if (left < CDENTRYSIZE + (zde->filename_len+zde->extrafield_len - +zde->comment_len)) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return -1; - } - - if (zde->filename_len) { - zde->filename = _zip_readstr(&cur, zde->filename_len, 1, error); - if (!zde->filename) - return -1; - } - - if (zde->extrafield_len) { - zde->extrafield = _zip_readstr(&cur, zde->extrafield_len, 0, - error); - if (!zde->extrafield) - return -1; - } - - if (zde->comment_len) { - zde->comment = _zip_readstr(&cur, zde->comment_len, 0, error); - if (!zde->comment) - return -1; - } - } - else { - if (zde->filename_len) { - zde->filename = _zip_readfpstr(fp, zde->filename_len, 1, error); - if (!zde->filename) - return -1; - } - - if (zde->extrafield_len) { - zde->extrafield = _zip_readfpstr(fp, zde->extrafield_len, 0, - error); - if (!zde->extrafield) - return -1; - } - - if (zde->comment_len) { - zde->comment = _zip_readfpstr(fp, zde->comment_len, 0, error); - if (!zde->comment) - return -1; - } - } - - if (bufp) - *bufp = cur; - - return 0; -} - - - -/* _zip_dirent_torrent_normalize(de); - Set values suitable for torrentzip. -*/ - -void -_zip_dirent_torrent_normalize(struct zip_dirent *de) -{ - static struct tm torrenttime; - static time_t last_mod = 0; - - if (last_mod == 0) { -#ifdef HAVE_STRUCT_TM_TM_ZONE - time_t now; - struct tm *l; -#endif - - torrenttime.tm_sec = 0; - torrenttime.tm_min = 32; - torrenttime.tm_hour = 23; - torrenttime.tm_mday = 24; - torrenttime.tm_mon = 11; - torrenttime.tm_year = 96; - torrenttime.tm_wday = 0; - torrenttime.tm_yday = 0; - torrenttime.tm_isdst = 0; - -#ifdef HAVE_STRUCT_TM_TM_ZONE - time(&now); - l = localtime(&now); - torrenttime.tm_gmtoff = l->tm_gmtoff; - torrenttime.tm_zone = l->tm_zone; -#endif - - last_mod = mktime(&torrenttime); - } - - de->version_madeby = 0; - de->version_needed = 20; /* 2.0 */ - de->bitflags = 2; /* maximum compression */ - de->comp_method = ZIP_CM_DEFLATE; - de->last_mod = last_mod; - - de->disk_number = 0; - de->int_attrib = 0; - de->ext_attrib = 0; - de->offset = 0; - - free(de->extrafield); - de->extrafield = NULL; - de->extrafield_len = 0; - free(de->comment); - de->comment = NULL; - de->comment_len = 0; -} - - - -/* _zip_dirent_write(zde, fp, localp, error): - Writes zip directory entry zde to file fp. - - If localp != 0, it writes a local header instead of a central - directory entry. - - Returns 0 if successful. On error, error is filled in and -1 is - returned. -*/ - -int -_zip_dirent_write(struct zip_dirent *zde, FILE *fp, int localp, - struct zip_error *error) -{ - unsigned short dostime, dosdate; - - fwrite(localp ? LOCAL_MAGIC : CENTRAL_MAGIC, 1, 4, fp); - - if (!localp) - _zip_write2(zde->version_madeby, fp); - _zip_write2(zde->version_needed, fp); - _zip_write2(zde->bitflags, fp); - _zip_write2(zde->comp_method, fp); - - _zip_u2d_time(zde->last_mod, &dostime, &dosdate); - _zip_write2(dostime, fp); - _zip_write2(dosdate, fp); - - _zip_write4(zde->crc, fp); - _zip_write4(zde->comp_size, fp); - _zip_write4(zde->uncomp_size, fp); - - _zip_write2(zde->filename_len, fp); - _zip_write2(zde->extrafield_len, fp); - - if (!localp) { - _zip_write2(zde->comment_len, fp); - _zip_write2(zde->disk_number, fp); - _zip_write2(zde->int_attrib, fp); - _zip_write4(zde->ext_attrib, fp); - _zip_write4(zde->offset, fp); - } - - if (zde->filename_len) - fwrite(zde->filename, 1, zde->filename_len, fp); - - if (zde->extrafield_len) - fwrite(zde->extrafield, 1, zde->extrafield_len, fp); - - if (!localp) { - if (zde->comment_len) - fwrite(zde->comment, 1, zde->comment_len, fp); - } - - if (ferror(fp)) { - _zip_error_set(error, ZIP_ER_WRITE, errno); - return -1; - } - - return 0; -} - - - -static time_t -_zip_d2u_time(int dtime, int ddate) -{ - struct tm *tm; - time_t now; - - now = time(NULL); - tm = localtime(&now); - /* let mktime decide if DST is in effect */ - tm->tm_isdst = -1; - - tm->tm_year = ((ddate>>9)&127) + 1980 - 1900; - tm->tm_mon = ((ddate>>5)&15) - 1; - tm->tm_mday = ddate&31; - - tm->tm_hour = (dtime>>11)&31; - tm->tm_min = (dtime>>5)&63; - tm->tm_sec = (dtime<<1)&62; - - return mktime(tm); -} - - - -unsigned short -_zip_read2(unsigned char **a) -{ - unsigned short ret; - - ret = (*a)[0]+((*a)[1]<<8); - *a += 2; - - return ret; -} - - - -unsigned int -_zip_read4(unsigned char **a) -{ - unsigned int ret; - - ret = ((((((*a)[3]<<8)+(*a)[2])<<8)+(*a)[1])<<8)+(*a)[0]; - *a += 4; - - return ret; -} - - - -static char * -_zip_readfpstr(FILE *fp, unsigned int len, int nulp, struct zip_error *error) -{ - char *r, *o; - - r = (char *)malloc(nulp ? len+1 : len); - if (!r) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - return NULL; - } - - if (fread(r, 1, len, fp)<len) { - free(r); - _zip_error_set(error, ZIP_ER_READ, errno); - return NULL; - } - - if (nulp) { - /* replace any in-string NUL characters with spaces */ - r[len] = 0; - for (o=r; o<r+len; o++) - if (*o == '\0') - *o = ' '; - } - - return r; -} - - - -static char * -_zip_readstr(unsigned char **buf, int len, int nulp, struct zip_error *error) -{ - char *r, *o; - - r = (char *)malloc(nulp ? len+1 : len); - if (!r) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - return NULL; - } - - memcpy(r, *buf, len); - *buf += len; - - if (nulp) { - /* replace any in-string NUL characters with spaces */ - r[len] = 0; - for (o=r; o<r+len; o++) - if (*o == '\0') - *o = ' '; - } - - return r; -} - - - -static void -_zip_write2(unsigned short i, FILE *fp) -{ - putc(i&0xff, fp); - putc((i>>8)&0xff, fp); - - return; -} - - - -static void -_zip_write4(unsigned int i, FILE *fp) -{ - putc(i&0xff, fp); - putc((i>>8)&0xff, fp); - putc((i>>16)&0xff, fp); - putc((i>>24)&0xff, fp); - - return; -} - - - -static void -_zip_u2d_time(time_t time, unsigned short *dtime, unsigned short *ddate) -{ - struct tm *tm; - - tm = localtime(&time); - *ddate = ((tm->tm_year+1900-1980)<<9) + ((tm->tm_mon+1)<<5) - + tm->tm_mday; - *dtime = ((tm->tm_hour)<<11) + ((tm->tm_min)<<5) - + ((tm->tm_sec)>>1); - - return; -} - - - -ZIP_EXTERN int -zip_delete(struct zip *za, int idx) -{ - if (idx < 0 || idx >= za->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - /* allow duplicate file names, because the file will - * be removed directly afterwards */ - if (_zip_unchange(za, idx, 1) != 0) - return -1; - - za->entry[idx].state = ZIP_ST_DELETED; - - return 0; -} - - - -ZIP_EXTERN void -zip_error_clear(struct zip *za) -{ - _zip_error_clear(&za->error); -} - - -ZIP_EXTERN int -zip_add(struct zip *za, const char *name, struct zip_source *source) -{ - if (name == NULL || source == NULL) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - return _zip_replace(za, -1, name, source); -} - - -ZIP_EXTERN int -zip_error_get_sys_type(int ze) -{ - if (ze < 0 || ze >= _zip_nerr_str) - return 0; - - return _zip_err_type[ze]; -} - - -ZIP_EXTERN void -zip_error_get(struct zip *za, int *zep, int *sep) -{ - _zip_error_get(&za->error, zep, sep); -} - - -const char * const _zip_err_str[] = { - "No error", - "Multi-disk zip archives not supported", - "Renaming temporary file failed", - "Closing zip archive failed", - "Seek error", - "Read error", - "Write error", - "CRC error", - "Containing zip archive was closed", - "No such file", - "File already exists", - "Can't open file", - "Failure to create temporary file", - "Zlib error", - "Malloc failure", - "Entry has been changed", - "Compression method not supported", - "Premature EOF", - "Invalid argument", - "Not a zip archive", - "Internal error", - "Zip archive inconsistent", - "Can't remove file", - "Entry has been deleted", -}; - -const int _zip_nerr_str = sizeof(_zip_err_str)/sizeof(_zip_err_str[0]); - -#define N ZIP_ET_NONE -#define S ZIP_ET_SYS -#define Z ZIP_ET_ZLIB - -const int _zip_err_type[] = { - N, - N, - S, - S, - S, - S, - S, - N, - N, - N, - N, - S, - S, - Z, - N, - N, - N, - N, - N, - N, - N, - N, - S, - N, -}; - - -struct zip_entry * -_zip_entry_new(struct zip *za) -{ - struct zip_entry *ze; - if (!za) { - ze = (struct zip_entry *)malloc(sizeof(struct zip_entry)); - if (!ze) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - } - else { - if (za->nentry >= za->nentry_alloc-1) { - za->nentry_alloc += 16; - za->entry = (struct zip_entry *)realloc(za->entry, - sizeof(struct zip_entry) - * za->nentry_alloc); - if (!za->entry) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - } - ze = za->entry+za->nentry; - } - - ze->state = ZIP_ST_UNCHANGED; - - ze->ch_filename = NULL; - ze->ch_comment = NULL; - ze->ch_comment_len = -1; - ze->source = NULL; - - if (za) - za->nentry++; - - return ze; -} - - -void -_zip_entry_free(struct zip_entry *ze) -{ - free(ze->ch_filename); - ze->ch_filename = NULL; - free(ze->ch_comment); - ze->ch_comment = NULL; - ze->ch_comment_len = -1; - - _zip_unchange_data(ze); -} - - -static int add_data(struct zip *, struct zip_source *, struct zip_dirent *, - FILE *); -static int add_data_comp(zip_source_callback, void *, struct zip_stat *, - FILE *, struct zip_error *); -static int add_data_uncomp(struct zip *, zip_source_callback, void *, - struct zip_stat *, FILE *); -static void ch_set_error(struct zip_error *, zip_source_callback, void *); -static int copy_data(FILE *, myoff_t, FILE *, struct zip_error *); -static int write_cdir(struct zip *, struct zip_cdir *, FILE *); -static int _zip_cdir_set_comment(struct zip_cdir *, struct zip *); -static int _zip_changed(struct zip *, int *); -static char *_zip_create_temp_output(struct zip *, FILE **); -static int _zip_torrentzip_cmp(const void *, const void *); - - - -struct filelist { - int idx; - const char *name; -}; - - - -ZIP_EXTERN int -zip_close(struct zip *za) -{ - int survivors; - int i, j, error; - char *temp; - FILE *out; - mode_t mask; - struct zip_cdir *cd; - struct zip_dirent de; - struct filelist *filelist; - int reopen_on_error; - int new_torrentzip; - - reopen_on_error = 0; - - if (za == NULL) - return -1; - - if (!_zip_changed(za, &survivors)) { - _zip_free(za); - return 0; - } - - /* don't create zip files with no entries */ - if (survivors == 0) { - if (za->zn && za->zp) { - if (remove(za->zn) != 0) { - _zip_error_set(&za->error, ZIP_ER_REMOVE, errno); - return -1; - } - } - _zip_free(za); - return 0; - } - - if ((filelist=(struct filelist *)malloc(sizeof(filelist[0])*survivors)) - == NULL) - return -1; - - if ((cd=_zip_cdir_new(survivors, &za->error)) == NULL) { - free(filelist); - return -1; - } - - for (i=0; i<survivors; i++) - _zip_dirent_init(&cd->entry[i]); - - /* archive comment is special for torrentzip */ - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) { - cd->comment = _zip_memdup(TORRENT_SIG "XXXXXXXX", - TORRENT_SIG_LEN + TORRENT_CRC_LEN, - &za->error); - if (cd->comment == NULL) { - _zip_cdir_free(cd); - free(filelist); - return -1; - } - cd->comment_len = TORRENT_SIG_LEN + TORRENT_CRC_LEN; - } - else if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, ZIP_FL_UNCHANGED) == 0) { - if (_zip_cdir_set_comment(cd, za) == -1) { - _zip_cdir_free(cd); - free(filelist); - return -1; - } - } - - if ((temp=_zip_create_temp_output(za, &out)) == NULL) { - _zip_cdir_free(cd); - return -1; - } - - - /* create list of files with index into original archive */ - for (i=j=0; i<za->nentry; i++) { - if (za->entry[i].state == ZIP_ST_DELETED) - continue; - - filelist[j].idx = i; - filelist[j].name = zip_get_name(za, i, 0); - j++; - } - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) - qsort(filelist, survivors, sizeof(filelist[0]), - _zip_torrentzip_cmp); - - new_torrentzip = (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 1 - && zip_get_archive_flag(za, ZIP_AFL_TORRENT, - ZIP_FL_UNCHANGED) == 0); - error = 0; - for (j=0; j<survivors; j++) { - i = filelist[j].idx; - - /* create new local directory entry */ - if (ZIP_ENTRY_DATA_CHANGED(za->entry+i) || new_torrentzip) { - _zip_dirent_init(&de); - - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) - _zip_dirent_torrent_normalize(&de); - - /* use it as central directory entry */ - memcpy(cd->entry+j, &de, sizeof(cd->entry[j])); - - /* set/update file name */ - if (za->entry[i].ch_filename == NULL) { - if (za->entry[i].state == ZIP_ST_ADDED) { - de.filename = strdup("-"); - de.filename_len = 1; - cd->entry[j].filename = "-"; - } - else { - de.filename = strdup(za->cdir->entry[i].filename); - de.filename_len = strlen(de.filename); - cd->entry[j].filename = za->cdir->entry[i].filename; - cd->entry[j].filename_len = de.filename_len; - } - } - } - else { - /* copy existing directory entries */ - if (fseeko(za->zp, za->cdir->entry[i].offset, SEEK_SET) != 0) { - _zip_error_set(&za->error, ZIP_ER_SEEK, errno); - error = 1; - break; - } - if (_zip_dirent_read(&de, za->zp, NULL, 0, 1, &za->error) != 0) { - error = 1; - break; - } - if (de.bitflags & ZIP_GPBF_DATA_DESCRIPTOR) { - de.crc = za->cdir->entry[i].crc; - de.comp_size = za->cdir->entry[i].comp_size; - de.uncomp_size = za->cdir->entry[i].uncomp_size; - de.bitflags &= ~ZIP_GPBF_DATA_DESCRIPTOR; - } - memcpy(cd->entry+j, za->cdir->entry+i, sizeof(cd->entry[j])); - } - - if (za->entry[i].ch_filename) { - free(de.filename); - if ((de.filename=strdup(za->entry[i].ch_filename)) == NULL) { - error = 1; - break; - } - de.filename_len = strlen(de.filename); - cd->entry[j].filename = za->entry[i].ch_filename; - cd->entry[j].filename_len = de.filename_len; - } - - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 0 - && za->entry[i].ch_comment_len != -1) { - /* as the rest of cd entries, its malloc/free is done by za */ - cd->entry[j].comment = za->entry[i].ch_comment; - cd->entry[j].comment_len = za->entry[i].ch_comment_len; - } - - cd->entry[j].offset = ftello(out); - - if (ZIP_ENTRY_DATA_CHANGED(za->entry+i) || new_torrentzip) { - struct zip_source *zs; - - zs = NULL; - if (!ZIP_ENTRY_DATA_CHANGED(za->entry+i)) { - if ((zs=zip_source_zip(za, za, i, ZIP_FL_RECOMPRESS, 0, -1)) - == NULL) { - error = 1; - break; - } - } - - if (add_data(za, zs ? zs : za->entry[i].source, &de, out) < 0) { - error = 1; - break; - } - cd->entry[j].last_mod = de.last_mod; - cd->entry[j].comp_method = de.comp_method; - cd->entry[j].comp_size = de.comp_size; - cd->entry[j].uncomp_size = de.uncomp_size; - cd->entry[j].crc = de.crc; - } - else { - if (_zip_dirent_write(&de, out, 1, &za->error) < 0) { - error = 1; - break; - } - /* we just read the local dirent, file is at correct position */ - if (copy_data(za->zp, cd->entry[j].comp_size, out, - &za->error) < 0) { - error = 1; - break; - } - } - - _zip_dirent_finalize(&de); - } - - if (!error) { - if (write_cdir(za, cd, out) < 0) - error = 1; - } - - /* pointers in cd entries are owned by za */ - cd->nentry = 0; - _zip_cdir_free(cd); - - if (error) { - _zip_dirent_finalize(&de); - fclose(out); - remove(temp); - free(temp); - return -1; - } - - if (fclose(out) != 0) { - _zip_error_set(&za->error, ZIP_ER_CLOSE, errno); - remove(temp); - free(temp); - return -1; - } - - if (za->zp) { - fclose(za->zp); - za->zp = NULL; - reopen_on_error = 1; - } - if (_zip_rename(temp, za->zn) != 0) { - _zip_error_set(&za->error, ZIP_ER_RENAME, errno); - remove(temp); - free(temp); - if (reopen_on_error) { - /* ignore errors, since we're already in an error case */ - za->zp = fopen(za->zn, "rb"); - } - return -1; - } - mask = umask(0); - umask(mask); - chmod(za->zn, 0666&~mask); - - _zip_free(za); - free(temp); - - return 0; -} - - - -static int -add_data(struct zip *za, struct zip_source *zs, struct zip_dirent *de, FILE *ft) -{ - myoff_t offstart, offend; - zip_source_callback cb; - void *ud; - struct zip_stat st; - - cb = zs->f; - ud = zs->ud; - - if (cb(ud, &st, sizeof(st), ZIP_SOURCE_STAT) < (ssize_t)sizeof(st)) { - ch_set_error(&za->error, cb, ud); - return -1; - } - - if (cb(ud, NULL, 0, ZIP_SOURCE_OPEN) < 0) { - ch_set_error(&za->error, cb, ud); - return -1; - } - - offstart = ftello(ft); - - if (_zip_dirent_write(de, ft, 1, &za->error) < 0) - return -1; - - if (st.comp_method != ZIP_CM_STORE) { - if (add_data_comp(cb, ud, &st, ft, &za->error) < 0) - return -1; - } - else { - if (add_data_uncomp(za, cb, ud, &st, ft) < 0) - return -1; - } - - if (cb(ud, NULL, 0, ZIP_SOURCE_CLOSE) < 0) { - ch_set_error(&za->error, cb, ud); - return -1; - } - - offend = ftello(ft); - - if (fseeko(ft, offstart, SEEK_SET) < 0) { - _zip_error_set(&za->error, ZIP_ER_SEEK, errno); - return -1; - } - - - de->last_mod = st.mtime; - de->comp_method = st.comp_method; - de->crc = st.crc; - de->uncomp_size = st.size; - de->comp_size = st.comp_size; - - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) - _zip_dirent_torrent_normalize(de); - - if (_zip_dirent_write(de, ft, 1, &za->error) < 0) - return -1; - - if (fseeko(ft, offend, SEEK_SET) < 0) { - _zip_error_set(&za->error, ZIP_ER_SEEK, errno); - return -1; - } - - return 0; -} - - - -static int -add_data_comp(zip_source_callback cb, void *ud, struct zip_stat *st,FILE *ft, - struct zip_error *error) -{ - char buf[BUFSIZE]; - ssize_t n; - - st->comp_size = 0; - while ((n=cb(ud, buf, sizeof(buf), ZIP_SOURCE_READ)) > 0) { - if (fwrite(buf, 1, n, ft) != (size_t)n) { - _zip_error_set(error, ZIP_ER_WRITE, errno); - return -1; - } - - st->comp_size += n; - } - if (n < 0) { - ch_set_error(error, cb, ud); - return -1; - } - - return 0; -} - - - -static int -add_data_uncomp(struct zip *za, zip_source_callback cb, void *ud, - struct zip_stat *st, FILE *ft) -{ - char b1[BUFSIZE], b2[BUFSIZE]; - int end, flush, ret; - ssize_t n; - size_t n2; - z_stream zstr; - int mem_level; - - st->comp_method = ZIP_CM_DEFLATE; - st->comp_size = st->size = 0; - st->crc = crc32(0, NULL, 0); - - zstr.zalloc = Z_NULL; - zstr.zfree = Z_NULL; - zstr.opaque = NULL; - zstr.avail_in = 0; - zstr.avail_out = 0; - - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) - mem_level = TORRENT_MEM_LEVEL; - else - mem_level = MAX_MEM_LEVEL; - - /* -MAX_WBITS: undocumented feature of zlib to _not_ write a zlib header */ - deflateInit2(&zstr, Z_BEST_COMPRESSION, Z_DEFLATED, -MAX_WBITS, mem_level, - Z_DEFAULT_STRATEGY); - - zstr.next_out = (Bytef *)b2; - zstr.avail_out = sizeof(b2); - zstr.avail_in = 0; - - flush = 0; - end = 0; - while (!end) { - if (zstr.avail_in == 0 && !flush) { - if ((n=cb(ud, b1, sizeof(b1), ZIP_SOURCE_READ)) < 0) { - ch_set_error(&za->error, cb, ud); - deflateEnd(&zstr); - return -1; - } - if (n > 0) { - zstr.avail_in = n; - zstr.next_in = (Bytef *)b1; - st->size += n; - st->crc = crc32(st->crc, (Bytef *)b1, n); - } - else - flush = Z_FINISH; - } - - ret = deflate(&zstr, flush); - if (ret != Z_OK && ret != Z_STREAM_END) { - _zip_error_set(&za->error, ZIP_ER_ZLIB, ret); - return -1; - } - - if (zstr.avail_out != sizeof(b2)) { - n2 = sizeof(b2) - zstr.avail_out; - - if (fwrite(b2, 1, n2, ft) != n2) { - _zip_error_set(&za->error, ZIP_ER_WRITE, errno); - return -1; - } - - zstr.next_out = (Bytef *)b2; - zstr.avail_out = sizeof(b2); - st->comp_size += n2; - } - - if (ret == Z_STREAM_END) { - deflateEnd(&zstr); - end = 1; - } - } - - return 0; -} - - - -static void -ch_set_error(struct zip_error *error, zip_source_callback cb, void *ud) -{ - int e[2]; - - if ((cb(ud, e, sizeof(e), ZIP_SOURCE_ERROR)) < (ssize_t)sizeof(e)) { - error->zip_err = ZIP_ER_INTERNAL; - error->sys_err = 0; - } - else { - error->zip_err = e[0]; - error->sys_err = e[1]; - } -} - - - -static int -copy_data(FILE *fs, myoff_t len, FILE *ft, struct zip_error *error) -{ - char buf[BUFSIZE]; - int n, nn; - - if (len == 0) - return 0; - - while (len > 0) { - nn = len > sizeof(buf) ? sizeof(buf) : len; - if ((n=fread(buf, 1, nn, fs)) < 0) { - _zip_error_set(error, ZIP_ER_READ, errno); - return -1; - } - else if (n == 0) { - _zip_error_set(error, ZIP_ER_EOF, 0); - return -1; - } - - if (fwrite(buf, 1, n, ft) != (size_t)n) { - _zip_error_set(error, ZIP_ER_WRITE, errno); - return -1; - } - - len -= n; - } - - return 0; -} - - - -static int -write_cdir(struct zip *za, struct zip_cdir *cd, FILE *out) -{ - myoff_t offset; - uLong crc; - char buf[TORRENT_CRC_LEN+1]; - - if (_zip_cdir_write(cd, out, &za->error) < 0) - return -1; - - if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 0) - return 0; - - - /* fix up torrentzip comment */ - - offset = ftello(out); - - if (_zip_filerange_crc(out, cd->offset, cd->size, &crc, &za->error) < 0) - return -1; - - snprintf(buf, sizeof(buf), "%08lX", (long)crc); - - if (fseeko(out, offset-TORRENT_CRC_LEN, SEEK_SET) < 0) { - _zip_error_set(&za->error, ZIP_ER_SEEK, errno); - return -1; - } - - if (fwrite(buf, TORRENT_CRC_LEN, 1, out) != 1) { - _zip_error_set(&za->error, ZIP_ER_WRITE, errno); - return -1; - } - - return 0; -} - - - -static int -_zip_cdir_set_comment(struct zip_cdir *dest, struct zip *src) -{ - if (src->ch_comment_len != -1) { - dest->comment = _zip_memdup(src->ch_comment, - src->ch_comment_len, &src->error); - if (dest->comment == NULL) - return -1; - dest->comment_len = src->ch_comment_len; - } else { - if (src->cdir && src->cdir->comment) { - dest->comment = _zip_memdup(src->cdir->comment, - src->cdir->comment_len, &src->error); - if (dest->comment == NULL) - return -1; - dest->comment_len = src->cdir->comment_len; - } - } - - return 0; -} - - - -static int -_zip_changed(struct zip *za, int *survivorsp) -{ - int changed, i, survivors; - - changed = survivors = 0; - - if (za->ch_comment_len != -1 - || za->ch_flags != za->flags) - changed = 1; - - for (i=0; i<za->nentry; i++) { - if ((za->entry[i].state != ZIP_ST_UNCHANGED) - || (za->entry[i].ch_comment_len != -1)) - changed = 1; - if (za->entry[i].state != ZIP_ST_DELETED) - survivors++; - } - - *survivorsp = survivors; - - return changed; -} - - - -static char * -_zip_create_temp_output(struct zip *za, FILE **outp) -{ - char *temp; - int tfd; - FILE *tfp; - - if ((temp=(char *)malloc(strlen(za->zn)+8)) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - sprintf(temp, "%s.XXXXXX", za->zn); - - if ((tfd=mkstemp(temp)) == -1) { - _zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno); - free(temp); - return NULL; - } - - if ((tfp=fdopen(tfd, "r+b")) == NULL) { - _zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno); - close(tfd); - remove(temp); - free(temp); - return NULL; - } - - *outp = tfp; - return temp; -} - - - -static int -_zip_torrentzip_cmp(const void *a, const void *b) -{ - return strcasecmp(((const struct filelist *)a)->name, - ((const struct filelist *)b)->name); -} - - - -ZIP_EXTERN int -zip_add_dir(struct zip *za, const char *name) -{ - int len, ret; - char *s; - struct zip_source *source; - - if (name == NULL) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - s = NULL; - len = strlen(name); - - if (name[len-1] != '/') { - if ((s=(char *)malloc(len+2)) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return -1; - } - strcpy(s, name); - s[len] = '/'; - s[len+1] = '\0'; - } - - if ((source=zip_source_buffer(za, NULL, 0, 0)) == NULL) { - free(s); - return -1; - } - - ret = _zip_replace(za, -1, s ? s : name, source); - - free(s); - if (ret < 0) - zip_source_free(source); - - return ret; -} - - -ZIP_EXTERN int -zip_error_to_str(char *buf, size_t len, int ze, int se) -{ - const char *zs, *ss; - - if (ze < 0 || ze >= _zip_nerr_str) - return snprintf(buf, len, "Unknown error %d", ze); - - zs = _zip_err_str[ze]; - - switch (_zip_err_type[ze]) { - case ZIP_ET_SYS: - ss = strerror(se); - break; - - case ZIP_ET_ZLIB: - ss = zError(se); - break; - - default: - ss = NULL; - } - - return snprintf(buf, len, "%s%s%s", - zs, (ss ? ": " : ""), (ss ? ss : "")); -} - - -ZIP_EXTERN void -zip_file_error_clear(struct zip_file *zf) -{ - _zip_error_clear(&zf->error); -} - - -ZIP_EXTERN int -zip_fclose(struct zip_file *zf) -{ - int i, ret; - - if (zf->zstr) - inflateEnd(zf->zstr); - free(zf->buffer); - free(zf->zstr); - - for (i=0; i<zf->za->nfile; i++) { - if (zf->za->file[i] == zf) { - zf->za->file[i] = zf->za->file[zf->za->nfile-1]; - zf->za->nfile--; - break; - } - } - - ret = 0; - if (zf->error.zip_err) - ret = zf->error.zip_err; - else if ((zf->flags & ZIP_ZF_CRC) && (zf->flags & ZIP_ZF_EOF)) { - /* if EOF, compare CRC */ - if (zf->crc_orig != zf->crc) - ret = ZIP_ER_CRC; - } - - free(zf); - return ret; -} - - -int -_zip_filerange_crc(FILE *fp, myoff_t start, myoff_t len, uLong *crcp, - struct zip_error *errp) -{ - Bytef buf[BUFSIZE]; - size_t n; - - *crcp = crc32(0L, Z_NULL, 0); - - if (fseeko(fp, start, SEEK_SET) != 0) { - _zip_error_set(errp, ZIP_ER_SEEK, errno); - return -1; - } - - while (len > 0) { - n = len > BUFSIZE ? BUFSIZE : len; - if ((n=fread(buf, 1, n, fp)) <= 0) { - _zip_error_set(errp, ZIP_ER_READ, errno); - return -1; - } - - *crcp = crc32(*crcp, buf, n); - - len-= n; - } - - return 0; -} - - -ZIP_EXTERN const char * -zip_file_strerror(struct zip_file *zf) -{ - return _zip_error_strerror(&zf->error); -} - - -/* _zip_file_get_offset(za, ze): - Returns the offset of the file data for entry ze. - - On error, fills in za->error and returns 0. -*/ - -unsigned int -_zip_file_get_offset(struct zip *za, int idx) -{ - struct zip_dirent de; - unsigned int offset; - - offset = za->cdir->entry[idx].offset; - - if (fseeko(za->zp, offset, SEEK_SET) != 0) { - _zip_error_set(&za->error, ZIP_ER_SEEK, errno); - return 0; - } - - if (_zip_dirent_read(&de, za->zp, NULL, 0, 1, &za->error) != 0) - return 0; - - offset += LENTRYSIZE + de.filename_len + de.extrafield_len; - - _zip_dirent_finalize(&de); - - return offset; -} - - -ZIP_EXTERN void -zip_file_error_get(struct zip_file *zf, int *zep, int *sep) -{ - _zip_error_get(&zf->error, zep, sep); -} - - -static struct zip_file *_zip_file_new(struct zip *za); - - - -ZIP_EXTERN struct zip_file * -zip_fopen_index(struct zip *za, int fileno, int flags) -{ - int len, ret; - int zfflags; - struct zip_file *zf; - - if ((fileno < 0) || (fileno >= za->nentry)) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((flags & ZIP_FL_UNCHANGED) == 0 - && ZIP_ENTRY_DATA_CHANGED(za->entry+fileno)) { - _zip_error_set(&za->error, ZIP_ER_CHANGED, 0); - return NULL; - } - - if (fileno >= za->cdir->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - zfflags = 0; - switch (za->cdir->entry[fileno].comp_method) { - case ZIP_CM_STORE: - zfflags |= ZIP_ZF_CRC; - break; - - case ZIP_CM_DEFLATE: - if ((flags & ZIP_FL_COMPRESSED) == 0) - zfflags |= ZIP_ZF_CRC | ZIP_ZF_DECOMP; - break; - default: - if ((flags & ZIP_FL_COMPRESSED) == 0) { - _zip_error_set(&za->error, ZIP_ER_COMPNOTSUPP, 0); - return NULL; - } - break; - } - - zf = _zip_file_new(za); - - zf->flags = zfflags; - /* zf->name = za->cdir->entry[fileno].filename; */ - zf->method = za->cdir->entry[fileno].comp_method; - zf->bytes_left = za->cdir->entry[fileno].uncomp_size; - zf->cbytes_left = za->cdir->entry[fileno].comp_size; - zf->crc_orig = za->cdir->entry[fileno].crc; - - if ((zf->fpos=_zip_file_get_offset(za, fileno)) == 0) { - zip_fclose(zf); - return NULL; - } - - if ((zf->flags & ZIP_ZF_DECOMP) == 0) - zf->bytes_left = zf->cbytes_left; - else { - if ((zf->buffer=(char *)malloc(BUFSIZE)) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - zip_fclose(zf); - return NULL; - } - - len = _zip_file_fillbuf(zf->buffer, BUFSIZE, zf); - if (len <= 0) { - _zip_error_copy(&za->error, &zf->error); - zip_fclose(zf); - return NULL; - } - - if ((zf->zstr = (z_stream *)malloc(sizeof(z_stream))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - zip_fclose(zf); - return NULL; - } - zf->zstr->zalloc = Z_NULL; - zf->zstr->zfree = Z_NULL; - zf->zstr->opaque = NULL; - zf->zstr->next_in = (Bytef *)zf->buffer; - zf->zstr->avail_in = len; - - /* negative value to tell zlib that there is no header */ - if ((ret=inflateInit2(zf->zstr, -MAX_WBITS)) != Z_OK) { - _zip_error_set(&za->error, ZIP_ER_ZLIB, ret); - zip_fclose(zf); - return NULL; - } - } - - return zf; -} - - - -int -_zip_file_fillbuf(void *buf, size_t buflen, struct zip_file *zf) -{ - int i, j; - - if (zf->error.zip_err != ZIP_ER_OK) - return -1; - - if ((zf->flags & ZIP_ZF_EOF) || zf->cbytes_left <= 0 || buflen <= 0) - return 0; - - if (fseeko(zf->za->zp, zf->fpos, SEEK_SET) < 0) { - _zip_error_set(&zf->error, ZIP_ER_SEEK, errno); - return -1; - } - if (buflen < zf->cbytes_left) - i = buflen; - else - i = zf->cbytes_left; - - j = fread(buf, 1, i, zf->za->zp); - if (j == 0) { - _zip_error_set(&zf->error, ZIP_ER_EOF, 0); - j = -1; - } - else if (j < 0) - _zip_error_set(&zf->error, ZIP_ER_READ, errno); - else { - zf->fpos += j; - zf->cbytes_left -= j; - } - - return j; -} - - - -static struct zip_file * -_zip_file_new(struct zip *za) -{ - struct zip_file *zf, **file; - int n; - - if ((zf=(struct zip_file *)malloc(sizeof(struct zip_file))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - if (za->nfile >= za->nfile_alloc-1) { - n = za->nfile_alloc + 10; - file = (struct zip_file **)realloc(za->file, - n*sizeof(struct zip_file *)); - if (file == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - free(zf); - return NULL; - } - za->nfile_alloc = n; - za->file = file; - } - - za->file[za->nfile++] = zf; - - zf->za = za; - _zip_error_init(&zf->error); - zf->flags = 0; - zf->crc = crc32(0L, Z_NULL, 0); - zf->crc_orig = 0; - zf->method = -1; - zf->bytes_left = zf->cbytes_left = 0; - zf->fpos = 0; - zf->buffer = NULL; - zf->zstr = NULL; - - return zf; -} - - -ZIP_EXTERN struct zip_file * -zip_fopen(struct zip *za, const char *fname, int flags) -{ - int idx; - - if ((idx=zip_name_locate(za, fname, flags)) < 0) - return NULL; - - return zip_fopen_index(za, idx, flags); -} - - -ZIP_EXTERN int -zip_set_file_comment(struct zip *za, int idx, const char *comment, int len) -{ - char *tmpcom; - - if (idx < 0 || idx >= za->nentry - || len < 0 || len > MAXCOMLEN - || (len > 0 && comment == NULL)) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if (len > 0) { - if ((tmpcom=(char *)_zip_memdup(comment, len, &za->error)) == NULL) - return -1; - } - else - tmpcom = NULL; - - free(za->entry[idx].ch_comment); - za->entry[idx].ch_comment = tmpcom; - za->entry[idx].ch_comment_len = len; - - return 0; -} - - -ZIP_EXTERN struct zip_source * -zip_source_file(struct zip *za, const char *fname, myoff_t start, myoff_t len) -{ - if (za == NULL) - return NULL; - - if (fname == NULL || start < 0 || len < -1) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - return _zip_source_file_or_p(za, fname, NULL, start, len); -} - - -struct read_data { - const char *buf, *data, *end; - time_t mtime; - int freep; -}; - -static ssize_t read_data(void *state, void *data, size_t len, - enum zip_source_cmd cmd); - - - -ZIP_EXTERN struct zip_source * -zip_source_buffer(struct zip *za, const void *data, myoff_t len, int freep) -{ - struct read_data *f; - struct zip_source *zs; - - if (za == NULL) - return NULL; - - if (len < 0 || (data == NULL && len > 0)) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((f=(struct read_data *)malloc(sizeof(*f))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - f->data = (const char *)data; - f->end = ((const char *)data)+len; - f->freep = freep; - f->mtime = time(NULL); - - if ((zs=zip_source_function(za, read_data, f)) == NULL) { - free(f); - return NULL; - } - - return zs; -} - - - -static ssize_t -read_data(void *state, void *data, size_t len, enum zip_source_cmd cmd) -{ - struct read_data *z; - char *buf; - size_t n; - - z = (struct read_data *)state; - buf = (char *)data; - - switch (cmd) { - case ZIP_SOURCE_OPEN: - z->buf = z->data; - return 0; - - case ZIP_SOURCE_READ: - n = z->end - z->buf; - if (n > len) - n = len; - - if (n) { - memcpy(buf, z->buf, n); - z->buf += n; - } - - return n; - - case ZIP_SOURCE_CLOSE: - return 0; - - case ZIP_SOURCE_STAT: - { - struct zip_stat *st; - - if (len < sizeof(*st)) - return -1; - - st = (struct zip_stat *)data; - - zip_stat_init(st); - st->mtime = z->mtime; - st->size = z->end - z->data; - - return sizeof(*st); - } - - case ZIP_SOURCE_ERROR: - { - int *e; - - if (len < sizeof(int)*2) - return -1; - - e = (int *)data; - e[0] = e[1] = 0; - } - return sizeof(int)*2; - - case ZIP_SOURCE_FREE: - if (z->freep) { - free((void *)z->data); - z->data = NULL; - } - free(z); - return 0; - - default: - ; - } - - return -1; -} - - -int -_zip_set_name(struct zip *za, int idx, const char *name) -{ - char *s; - int i; - - if (idx < 0 || idx >= za->nentry || name == NULL) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if ((i=_zip_name_locate(za, name, 0, NULL)) != -1 && i != idx) { - _zip_error_set(&za->error, ZIP_ER_EXISTS, 0); - return -1; - } - - /* no effective name change */ - if (i == idx) - return 0; - - if ((s=strdup(name)) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return -1; - } - - if (za->entry[idx].state == ZIP_ST_UNCHANGED) - za->entry[idx].state = ZIP_ST_RENAMED; - - free(za->entry[idx].ch_filename); - za->entry[idx].ch_filename = s; - - return 0; -} - - -ZIP_EXTERN int -zip_set_archive_flag(struct zip *za, int flag, int value) -{ - if (value) - za->ch_flags |= flag; - else - za->ch_flags &= ~flag; - - return 0; -} - - -void -_zip_unchange_data(struct zip_entry *ze) -{ - if (ze->source) { - (void)ze->source->f(ze->source->ud, NULL, 0, ZIP_SOURCE_FREE); - free(ze->source); - ze->source = NULL; - } - - ze->state = ze->ch_filename ? ZIP_ST_RENAMED : ZIP_ST_UNCHANGED; -} - - -ZIP_EXTERN int -zip_unchange_archive(struct zip *za) -{ - free(za->ch_comment); - za->ch_comment = NULL; - za->ch_comment_len = -1; - - za->ch_flags = za->flags; - - return 0; -} - -ZIP_EXTERN int -zip_unchange(struct zip *za, int idx) -{ - return _zip_unchange(za, idx, 0); -} - - - -int -_zip_unchange(struct zip *za, int idx, int allow_duplicates) -{ - int i; - - if (idx < 0 || idx >= za->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if (za->entry[idx].ch_filename) { - if (!allow_duplicates) { - i = _zip_name_locate(za, - _zip_get_name(za, idx, ZIP_FL_UNCHANGED, NULL), - 0, NULL); - if (i != -1 && i != idx) { - _zip_error_set(&za->error, ZIP_ER_EXISTS, 0); - return -1; - } - } - - free(za->entry[idx].ch_filename); - za->entry[idx].ch_filename = NULL; - } - - free(za->entry[idx].ch_comment); - za->entry[idx].ch_comment = NULL; - za->entry[idx].ch_comment_len = -1; - - _zip_unchange_data(za->entry+idx); - - return 0; -} - -ZIP_EXTERN int -zip_unchange_all(struct zip *za) -{ - int ret, i; - - ret = 0; - for (i=0; i<za->nentry; i++) - ret |= _zip_unchange(za, i, 1); - - ret |= zip_unchange_archive(za); - - return ret; -} - - -ZIP_EXTERN int -zip_set_archive_comment(struct zip *za, const char *comment, int len) -{ - char *tmpcom; - - if (len < 0 || len > MAXCOMLEN - || (len > 0 && comment == NULL)) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if (len > 0) { - if ((tmpcom=(char *)_zip_memdup(comment, len, &za->error)) == NULL) - return -1; - } - else - tmpcom = NULL; - - free(za->ch_comment); - za->ch_comment = tmpcom; - za->ch_comment_len = len; - - return 0; -} - - -ZIP_EXTERN int -zip_replace(struct zip *za, int idx, struct zip_source *source) -{ - if (idx < 0 || idx >= za->nentry || source == NULL) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if (_zip_replace(za, idx, NULL, source) == -1) - return -1; - - return 0; -} - - - - -int -_zip_replace(struct zip *za, int idx, const char *name, - struct zip_source *source) -{ - if (idx == -1) { - if (_zip_entry_new(za) == NULL) - return -1; - - idx = za->nentry - 1; - } - - _zip_unchange_data(za->entry+idx); - - if (name && _zip_set_name(za, idx, name) != 0) - return -1; - - za->entry[idx].state = ((za->cdir == NULL || idx >= za->cdir->nentry) - ? ZIP_ST_ADDED : ZIP_ST_REPLACED); - za->entry[idx].source = source; - - return idx; -} - - -ZIP_EXTERN int -zip_rename(struct zip *za, int idx, const char *name) -{ - const char *old_name; - int old_is_dir, new_is_dir; - - if (idx >= za->nentry || idx < 0 || name[0] == '\0') { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if ((old_name=zip_get_name(za, idx, 0)) == NULL) - return -1; - - new_is_dir = (name[strlen(name)-1] == '/'); - old_is_dir = (old_name[strlen(old_name)-1] == '/'); - - if (new_is_dir != old_is_dir) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - return _zip_set_name(za, idx, name); -} - -#include <sys/stat.h> -#include <errno.h> -#include <limits.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -static void set_error(int *, struct zip_error *, int); -static struct zip *_zip_allocate_new(const char *, int *); -static int _zip_checkcons(FILE *, struct zip_cdir *, struct zip_error *); -static void _zip_check_torrentzip(struct zip *); -static struct zip_cdir *_zip_find_central_dir(FILE *, int, int *, myoff_t); -static int _zip_file_exists(const char *, int, int *); -static int _zip_headercomp(struct zip_dirent *, int, - struct zip_dirent *, int); -static unsigned char *_zip_memmem(const unsigned char *, int, - const unsigned char *, int); -static struct zip_cdir *_zip_readcdir(FILE *, unsigned char *, unsigned char *, - int, int, struct zip_error *); - - - -ZIP_EXTERN struct zip * -zip_open(const char *fn, int flags, int *zep) -{ - FILE *fp; - struct zip *za; - struct zip_cdir *cdir; - int i; - myoff_t len; - - switch (_zip_file_exists(fn, flags, zep)) { - case -1: - return NULL; - case 0: - return _zip_allocate_new(fn, zep); - default: - break; - } - - if ((fp=fopen(fn, "rb")) == NULL) { - set_error(zep, NULL, ZIP_ER_OPEN); - return NULL; - } - - fseeko(fp, 0, SEEK_END); - len = ftello(fp); - - /* treat empty files as empty archives */ - if (len == 0) { - if ((za=_zip_allocate_new(fn, zep)) == NULL) - fclose(fp); - else - za->zp = fp; - return za; - } - - cdir = _zip_find_central_dir(fp, flags, zep, len); - if (cdir == NULL) { - fclose(fp); - return NULL; - } - - if ((za=_zip_allocate_new(fn, zep)) == NULL) { - _zip_cdir_free(cdir); - fclose(fp); - return NULL; - } - - za->cdir = cdir; - za->zp = fp; - - if ((za->entry=(struct zip_entry *)malloc(sizeof(*(za->entry)) - * cdir->nentry)) == NULL) { - set_error(zep, NULL, ZIP_ER_MEMORY); - _zip_free(za); - return NULL; - } - for (i=0; i<cdir->nentry; i++) - _zip_entry_new(za); - - _zip_check_torrentzip(za); - za->ch_flags = za->flags; - - return za; -} - - - -static void -set_error(int *zep, struct zip_error *err, int ze) -{ - int se; - - if (err) { - _zip_error_get(err, &ze, &se); - if (zip_error_get_sys_type(ze) == ZIP_ET_SYS) - errno = se; - } - - if (zep) - *zep = ze; -} - - - -/* _zip_readcdir: - tries to find a valid end-of-central-directory at the beginning of - buf, and then the corresponding central directory entries. - Returns a struct zip_cdir which contains the central directory - entries, or NULL if unsuccessful. */ - -static struct zip_cdir * -_zip_readcdir(FILE *fp, unsigned char *buf, unsigned char *eocd, int buflen, - int flags, struct zip_error *error) -{ - struct zip_cdir *cd; - unsigned char *cdp, **bufp; - int i, comlen, nentry; - - comlen = buf + buflen - eocd - EOCDLEN; - if (comlen < 0) { - /* not enough bytes left for comment */ - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return NULL; - } - - /* check for end-of-central-dir magic */ - if (memcmp(eocd, EOCD_MAGIC, 4) != 0) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return NULL; - } - - if (memcmp(eocd+4, "\0\0\0\0", 4) != 0) { - _zip_error_set(error, ZIP_ER_MULTIDISK, 0); - return NULL; - } - - cdp = eocd + 8; - /* number of cdir-entries on this disk */ - i = _zip_read2(&cdp); - /* number of cdir-entries */ - nentry = _zip_read2(&cdp); - - if ((cd=_zip_cdir_new(nentry, error)) == NULL) - return NULL; - - cd->size = _zip_read4(&cdp); - cd->offset = _zip_read4(&cdp); - cd->comment = NULL; - cd->comment_len = _zip_read2(&cdp); - - if ((comlen < cd->comment_len) || (cd->nentry != i)) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - free(cd); - return NULL; - } - if ((flags & ZIP_CHECKCONS) && comlen != cd->comment_len) { - _zip_error_set(error, ZIP_ER_INCONS, 0); - free(cd); - return NULL; - } - - if (cd->comment_len) { - if ((cd->comment=(char *)_zip_memdup(eocd+EOCDLEN, - cd->comment_len, error)) - == NULL) { - free(cd); - return NULL; - } - } - - cdp = eocd; - if (cd->size < (unsigned int)(eocd-buf)) { - /* if buffer already read in, use it */ - cdp = eocd - cd->size; - bufp = &cdp; - } - else { - /* go to start of cdir and read it entry by entry */ - bufp = NULL; - clearerr(fp); - fseeko(fp, cd->offset, SEEK_SET); - /* possible consistency check: cd->offset = - len-(cd->size+cd->comment_len+EOCDLEN) ? */ - if (ferror(fp) || ((unsigned long)ftello(fp) != cd->offset)) { - /* seek error or offset of cdir wrong */ - if (ferror(fp)) - _zip_error_set(error, ZIP_ER_SEEK, errno); - else - _zip_error_set(error, ZIP_ER_NOZIP, 0); - free(cd); - return NULL; - } - } - - for (i=0; i<cd->nentry; i++) { - if ((_zip_dirent_read(cd->entry+i, fp, bufp, eocd-cdp, 0, - error)) < 0) { - cd->nentry = i; - _zip_cdir_free(cd); - return NULL; - } - } - - return cd; -} - - - -/* _zip_checkcons: - Checks the consistency of the central directory by comparing central - directory entries with local headers and checking for plausible - file and header offsets. Returns -1 if not plausible, else the - difference between the lowest and the highest fileposition reached */ - -static int -_zip_checkcons(FILE *fp, struct zip_cdir *cd, struct zip_error *error) -{ - int i; - unsigned int min, max, j; - struct zip_dirent temp; - - if (cd->nentry) { - max = cd->entry[0].offset; - min = cd->entry[0].offset; - } - else - min = max = 0; - - for (i=0; i<cd->nentry; i++) { - if (cd->entry[i].offset < min) - min = cd->entry[i].offset; - if (min > cd->offset) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return -1; - } - - j = cd->entry[i].offset + cd->entry[i].comp_size - + cd->entry[i].filename_len + LENTRYSIZE; - if (j > max) - max = j; - if (max > cd->offset) { - _zip_error_set(error, ZIP_ER_NOZIP, 0); - return -1; - } - - if (fseeko(fp, cd->entry[i].offset, SEEK_SET) != 0) { - _zip_error_set(error, ZIP_ER_SEEK, 0); - return -1; - } - - if (_zip_dirent_read(&temp, fp, NULL, 0, 1, error) == -1) - return -1; - - if (_zip_headercomp(cd->entry+i, 0, &temp, 1) != 0) { - _zip_error_set(error, ZIP_ER_INCONS, 0); - _zip_dirent_finalize(&temp); - return -1; - } - _zip_dirent_finalize(&temp); - } - - return max - min; -} - - - -/* _zip_check_torrentzip: - check wether ZA has a valid TORRENTZIP comment, i.e. is torrentzipped */ - -static void -_zip_check_torrentzip(struct zip *za) -{ - uLong crc_got, crc_should; - char buf[8+1]; - char *end; - - if (za->zp == NULL || za->cdir == NULL) - return; - - if (za->cdir->comment_len != TORRENT_SIG_LEN+8 - || strncmp(za->cdir->comment, TORRENT_SIG, TORRENT_SIG_LEN) != 0) - return; - - memcpy(buf, za->cdir->comment+TORRENT_SIG_LEN, 8); - buf[8] = '\0'; - errno = 0; - crc_should = strtoul(buf, &end, 16); - if ((crc_should == UINT_MAX && errno != 0) || (end && *end)) - return; - - if (_zip_filerange_crc(za->zp, za->cdir->offset, za->cdir->size, - &crc_got, NULL) < 0) - return; - - if (crc_got == crc_should) - za->flags |= ZIP_AFL_TORRENT; -} - - - - -/* _zip_headercomp: - compares two headers h1 and h2; if they are local headers, set - local1p or local2p respectively to 1, else 0. Return 0 if they - are identical, -1 if not. */ - -static int -_zip_headercomp(struct zip_dirent *h1, int local1p, struct zip_dirent *h2, - int local2p) -{ - if ((h1->version_needed != h2->version_needed) -#if 0 - /* some zip-files have different values in local - and global headers for the bitflags */ - || (h1->bitflags != h2->bitflags) -#endif - || (h1->comp_method != h2->comp_method) - || (h1->last_mod != h2->last_mod) - || (h1->filename_len != h2->filename_len) - || !h1->filename || !h2->filename - || strcmp(h1->filename, h2->filename)) - return -1; - - /* check that CRC and sizes are zero if data descriptor is used */ - if ((h1->bitflags & ZIP_GPBF_DATA_DESCRIPTOR) && local1p - && (h1->crc != 0 - || h1->comp_size != 0 - || h1->uncomp_size != 0)) - return -1; - if ((h2->bitflags & ZIP_GPBF_DATA_DESCRIPTOR) && local2p - && (h2->crc != 0 - || h2->comp_size != 0 - || h2->uncomp_size != 0)) - return -1; - - /* check that CRC and sizes are equal if no data descriptor is used */ - if (((h1->bitflags & ZIP_GPBF_DATA_DESCRIPTOR) == 0 || local1p == 0) - && ((h2->bitflags & ZIP_GPBF_DATA_DESCRIPTOR) == 0 || local2p == 0)) { - if ((h1->crc != h2->crc) - || (h1->comp_size != h2->comp_size) - || (h1->uncomp_size != h2->uncomp_size)) - return -1; - } - - if ((local1p == local2p) - && ((h1->extrafield_len != h2->extrafield_len) - || (h1->extrafield_len && h2->extrafield - && memcmp(h1->extrafield, h2->extrafield, - h1->extrafield_len)))) - return -1; - - /* if either is local, nothing more to check */ - if (local1p || local2p) - return 0; - - if ((h1->version_madeby != h2->version_madeby) - || (h1->disk_number != h2->disk_number) - || (h1->int_attrib != h2->int_attrib) - || (h1->ext_attrib != h2->ext_attrib) - || (h1->offset != h2->offset) - || (h1->comment_len != h2->comment_len) - || (h1->comment_len && h2->comment - && memcmp(h1->comment, h2->comment, h1->comment_len))) - return -1; - - return 0; -} - - - -static struct zip * -_zip_allocate_new(const char *fn, int *zep) -{ - struct zip *za; - struct zip_error error; - - if ((za=_zip_new(&error)) == NULL) { - set_error(zep, &error, 0); - return NULL; - } - - za->zn = strdup(fn); - if (!za->zn) { - _zip_free(za); - set_error(zep, NULL, ZIP_ER_MEMORY); - return NULL; - } - return za; -} - - - -static int -_zip_file_exists(const char *fn, int flags, int *zep) -{ - struct stat st; - - if (fn == NULL) { - set_error(zep, NULL, ZIP_ER_INVAL); - return -1; - } - - if (stat(fn, &st) != 0) { - if (flags & ZIP_CREATE) - return 0; - else { - set_error(zep, NULL, ZIP_ER_OPEN); - return -1; - } - } - else if ((flags & ZIP_EXCL)) { - set_error(zep, NULL, ZIP_ER_EXISTS); - return -1; - } - /* ZIP_CREATE gets ignored if file exists and not ZIP_EXCL, - just like open() */ - - return 1; -} - - - -static struct zip_cdir * -_zip_find_central_dir(FILE *fp, int flags, int *zep, myoff_t len) -{ - struct zip_cdir *cdir, *cdirnew; - unsigned char *buf, *match; - int a, best, buflen, i; - struct zip_error zerr; - - i = fseeko(fp, -(len < CDBUFSIZE ? len : CDBUFSIZE), SEEK_END); - if (i == -1 && errno != EFBIG) { - /* seek before start of file on my machine */ - set_error(zep, NULL, ZIP_ER_SEEK); - return NULL; - } - - /* 64k is too much for stack */ - if ((buf=(unsigned char *)malloc(CDBUFSIZE)) == NULL) { - set_error(zep, NULL, ZIP_ER_MEMORY); - return NULL; - } - - clearerr(fp); - buflen = fread(buf, 1, CDBUFSIZE, fp); - - if (ferror(fp)) { - set_error(zep, NULL, ZIP_ER_READ); - free(buf); - return NULL; - } - - best = -1; - cdir = NULL; - match = buf; - _zip_error_set(&zerr, ZIP_ER_NOZIP, 0); - - while ((match=_zip_memmem(match, buflen-(match-buf)-18, - (const unsigned char *)EOCD_MAGIC, 4))!=NULL) { - /* found match -- check, if good */ - /* to avoid finding the same match all over again */ - match++; - if ((cdirnew=_zip_readcdir(fp, buf, match-1, buflen, flags, - &zerr)) == NULL) - continue; - - if (cdir) { - if (best <= 0) - best = _zip_checkcons(fp, cdir, &zerr); - a = _zip_checkcons(fp, cdirnew, &zerr); - if (best < a) { - _zip_cdir_free(cdir); - cdir = cdirnew; - best = a; - } - else - _zip_cdir_free(cdirnew); - } - else { - cdir = cdirnew; - if (flags & ZIP_CHECKCONS) - best = _zip_checkcons(fp, cdir, &zerr); - else - best = 0; - } - cdirnew = NULL; - } - - free(buf); - - if (best < 0) { - set_error(zep, &zerr, 0); - _zip_cdir_free(cdir); - return NULL; - } - - return cdir; -} - - - -static unsigned char * -_zip_memmem(const unsigned char *big, int biglen, const unsigned char *little, - int littlelen) -{ - const unsigned char *p; - - if ((biglen < littlelen) || (littlelen == 0)) - return NULL; - p = big-1; - while ((p=(const unsigned char *) - memchr(p+1, little[0], (size_t)(big-(p+1)+biglen-littlelen+1))) - != NULL) { - if (memcmp(p+1, little+1, littlelen-1)==0) - return (unsigned char *)p; - } - - return NULL; -} - - -/* _zip_new: - creates a new zipfile struct, and sets the contents to zero; returns - the new struct. */ - -struct zip * -_zip_new(struct zip_error *error) -{ - struct zip *za; - - za = (struct zip *)malloc(sizeof(struct zip)); - if (!za) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - return NULL; - } - - za->zn = NULL; - za->zp = NULL; - _zip_error_init(&za->error); - za->cdir = NULL; - za->ch_comment = NULL; - za->ch_comment_len = -1; - za->nentry = za->nentry_alloc = 0; - za->entry = NULL; - za->nfile = za->nfile_alloc = 0; - za->file = NULL; - za->flags = za->ch_flags = 0; - - return za; -} - - -void * -_zip_memdup(const void *mem, size_t len, struct zip_error *error) -{ - void *ret; - - ret = malloc(len); - if (!ret) { - _zip_error_set(error, ZIP_ER_MEMORY, 0); - return NULL; - } - - memcpy(ret, mem, len); - - return ret; -} - - -ZIP_EXTERN int -zip_get_num_files(struct zip *za) -{ - if (za == NULL) - return -1; - - return za->nentry; -} - -ZIP_EXTERN const char * -zip_get_name(struct zip *za, int idx, int flags) -{ - return _zip_get_name(za, idx, flags, &za->error); -} - - - -const char * -_zip_get_name(struct zip *za, int idx, int flags, struct zip_error *error) -{ - if (idx < 0 || idx >= za->nentry) { - _zip_error_set(error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((flags & ZIP_FL_UNCHANGED) == 0) { - if (za->entry[idx].state == ZIP_ST_DELETED) { - _zip_error_set(error, ZIP_ER_DELETED, 0); - return NULL; - } - if (za->entry[idx].ch_filename) - return za->entry[idx].ch_filename; - } - - if (za->cdir == NULL || idx >= za->cdir->nentry) { - _zip_error_set(error, ZIP_ER_INVAL, 0); - return NULL; - } - - return za->cdir->entry[idx].filename; -} - - -ZIP_EXTERN const char * -zip_get_file_comment(struct zip *za, int idx, int *lenp, int flags) -{ - if (idx < 0 || idx >= za->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((flags & ZIP_FL_UNCHANGED) - || (za->entry[idx].ch_comment_len == -1)) { - if (lenp != NULL) - *lenp = za->cdir->entry[idx].comment_len; - return za->cdir->entry[idx].comment; - } - - if (lenp != NULL) - *lenp = za->entry[idx].ch_comment_len; - return za->entry[idx].ch_comment; -} - - -ZIP_EXTERN int -zip_get_archive_flag(struct zip *za, int flag, int flags) -{ - int fl; - - fl = (flags & ZIP_FL_UNCHANGED) ? za->flags : za->ch_flags; - - return (fl & flag) ? 1 : 0; -} - - -ZIP_EXTERN const char * -zip_get_archive_comment(struct zip *za, int *lenp, int flags) -{ - if ((flags & ZIP_FL_UNCHANGED) - || (za->ch_comment_len == -1)) { - if (za->cdir) { - if (lenp != NULL) - *lenp = za->cdir->comment_len; - return za->cdir->comment; - } - else { - if (lenp != NULL) - *lenp = -1; - return NULL; - } - } - - if (lenp != NULL) - *lenp = za->ch_comment_len; - return za->ch_comment; -} - - -/* _zip_free: - frees the space allocated to a zipfile struct, and closes the - corresponding file. */ - -void -_zip_free(struct zip *za) -{ - int i; - - if (za == NULL) - return; - - if (za->zn) - free(za->zn); - - if (za->zp) - fclose(za->zp); - - _zip_cdir_free(za->cdir); - - if (za->entry) { - for (i=0; i<za->nentry; i++) { - _zip_entry_free(za->entry+i); - } - free(za->entry); - } - - for (i=0; i<za->nfile; i++) { - if (za->file[i]->error.zip_err == ZIP_ER_OK) { - _zip_error_set(&za->file[i]->error, ZIP_ER_ZIPCLOSED, 0); - za->file[i]->za = NULL; - } - } - - free(za->file); - - free(za); - - return; -} - - -ZIP_EXTERN ssize_t -zip_fread(struct zip_file *zf, void *outbuf, size_t toread) -{ - int ret; - size_t out_before, len; - int i; - - if (!zf) - return -1; - - if (zf->error.zip_err != 0) - return -1; - - if ((zf->flags & ZIP_ZF_EOF) || (toread == 0)) - return 0; - - if (zf->bytes_left == 0) { - zf->flags |= ZIP_ZF_EOF; - if (zf->flags & ZIP_ZF_CRC) { - if (zf->crc != zf->crc_orig) { - _zip_error_set(&zf->error, ZIP_ER_CRC, 0); - return -1; - } - } - return 0; - } - - if ((zf->flags & ZIP_ZF_DECOMP) == 0) { - ret = _zip_file_fillbuf(outbuf, toread, zf); - if (ret > 0) { - if (zf->flags & ZIP_ZF_CRC) - zf->crc = crc32(zf->crc, (Bytef *)outbuf, ret); - zf->bytes_left -= ret; - } - return ret; - } - - zf->zstr->next_out = (Bytef *)outbuf; - zf->zstr->avail_out = toread; - out_before = zf->zstr->total_out; - - /* endless loop until something has been accomplished */ - for (;;) { - ret = inflate(zf->zstr, Z_SYNC_FLUSH); - - switch (ret) { - case Z_OK: - case Z_STREAM_END: - /* all ok */ - /* Z_STREAM_END probably won't happen, since we didn't - have a header */ - len = zf->zstr->total_out - out_before; - if (len >= zf->bytes_left || len >= toread) { - if (zf->flags & ZIP_ZF_CRC) - zf->crc = crc32(zf->crc, (Bytef *)outbuf, len); - zf->bytes_left -= len; - return len; - } - break; - - case Z_BUF_ERROR: - if (zf->zstr->avail_in == 0) { - i = _zip_file_fillbuf(zf->buffer, BUFSIZE, zf); - if (i == 0) { - _zip_error_set(&zf->error, ZIP_ER_INCONS, 0); - return -1; - } - else if (i < 0) - return -1; - zf->zstr->next_in = (Bytef *)zf->buffer; - zf->zstr->avail_in = i; - continue; - } - /* fallthrough */ - case Z_NEED_DICT: - case Z_DATA_ERROR: - case Z_STREAM_ERROR: - case Z_MEM_ERROR: - _zip_error_set(&zf->error, ZIP_ER_ZLIB, ret); - return -1; - } - } -} - - -ZIP_EXTERN const char * -zip_strerror(struct zip *za) -{ - return _zip_error_strerror(&za->error); -} - - -ZIP_EXTERN void -zip_stat_init(struct zip_stat *st) -{ - st->name = NULL; - st->index = -1; - st->crc = 0; - st->mtime = (time_t)-1; - st->size = -1; - st->comp_size = -1; - st->comp_method = ZIP_CM_STORE; - st->encryption_method = ZIP_EM_NONE; -} - - -ZIP_EXTERN int -zip_stat_index(struct zip *za, int index, int flags, struct zip_stat *st) -{ - const char *name; - - if (index < 0 || index >= za->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - if ((name=zip_get_name(za, index, flags)) == NULL) - return -1; - - - if ((flags & ZIP_FL_UNCHANGED) == 0 - && ZIP_ENTRY_DATA_CHANGED(za->entry+index)) { - if (za->entry[index].source->f(za->entry[index].source->ud, - st, sizeof(*st), ZIP_SOURCE_STAT) < 0) { - _zip_error_set(&za->error, ZIP_ER_CHANGED, 0); - return -1; - } - } - else { - if (za->cdir == NULL || index >= za->cdir->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - st->crc = za->cdir->entry[index].crc; - st->size = za->cdir->entry[index].uncomp_size; - st->mtime = za->cdir->entry[index].last_mod; - st->comp_size = za->cdir->entry[index].comp_size; - st->comp_method = za->cdir->entry[index].comp_method; - if (za->cdir->entry[index].bitflags & ZIP_GPBF_ENCRYPTED) { - if (za->cdir->entry[index].bitflags & ZIP_GPBF_STRONG_ENCRYPTION) { - /* XXX */ - st->encryption_method = ZIP_EM_UNKNOWN; - } - else - st->encryption_method = ZIP_EM_TRAD_PKWARE; - } - else - st->encryption_method = ZIP_EM_NONE; - /* st->bitflags = za->cdir->entry[index].bitflags; */ - } - - st->index = index; - st->name = name; - - return 0; -} - - -ZIP_EXTERN int -zip_stat(struct zip *za, const char *fname, int flags, struct zip_stat *st) -{ - int idx; - - if ((idx=zip_name_locate(za, fname, flags)) < 0) - return -1; - - return zip_stat_index(za, idx, flags, st); -} - - -struct read_zip { - struct zip_file *zf; - struct zip_stat st; - myoff_t off, len; -}; - -static ssize_t read_zip(void *st, void *data, size_t len, - enum zip_source_cmd cmd); - - - -ZIP_EXTERN struct zip_source * -zip_source_zip(struct zip *za, struct zip *srcza, int srcidx, int flags, - myoff_t start, myoff_t len) -{ - struct zip_error error; - struct zip_source *zs; - struct read_zip *p; - - /* XXX: ZIP_FL_RECOMPRESS */ - - if (za == NULL) - return NULL; - - if (srcza == NULL || start < 0 || len < -1 || srcidx < 0 || srcidx >= srcza->nentry) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((flags & ZIP_FL_UNCHANGED) == 0 - && ZIP_ENTRY_DATA_CHANGED(srcza->entry+srcidx)) { - _zip_error_set(&za->error, ZIP_ER_CHANGED, 0); - return NULL; - } - - if (len == 0) - len = -1; - - if (start == 0 && len == -1 && (flags & ZIP_FL_RECOMPRESS) == 0) - flags |= ZIP_FL_COMPRESSED; - else - flags &= ~ZIP_FL_COMPRESSED; - - if ((p=(struct read_zip *)malloc(sizeof(*p))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - _zip_error_copy(&error, &srcza->error); - - if (zip_stat_index(srcza, srcidx, flags, &p->st) < 0 - || (p->zf=zip_fopen_index(srcza, srcidx, flags)) == NULL) { - free(p); - _zip_error_copy(&za->error, &srcza->error); - _zip_error_copy(&srcza->error, &error); - - return NULL; - } - p->off = start; - p->len = len; - - if ((flags & ZIP_FL_COMPRESSED) == 0) { - p->st.size = p->st.comp_size = len; - p->st.comp_method = ZIP_CM_STORE; - p->st.crc = 0; - } - - if ((zs=zip_source_function(za, read_zip, p)) == NULL) { - free(p); - return NULL; - } - - return zs; -} - - - -static ssize_t -read_zip(void *state, void *data, size_t len, enum zip_source_cmd cmd) -{ - struct read_zip *z; - char b[8192], *buf; - int i, n; - - z = (struct read_zip *)state; - buf = (char *)data; - - switch (cmd) { - case ZIP_SOURCE_OPEN: - for (n=0; n<z->off; n+= i) { - i = (z->off-n > sizeof(b) ? sizeof(b) : z->off-n); - if ((i=zip_fread(z->zf, b, i)) < 0) { - zip_fclose(z->zf); - z->zf = NULL; - return -1; - } - } - return 0; - - case ZIP_SOURCE_READ: - if (z->len != -1) - n = len > z->len ? z->len : len; - else - n = len; - - - if ((i=zip_fread(z->zf, buf, n)) < 0) - return -1; - - if (z->len != -1) - z->len -= i; - - return i; - - case ZIP_SOURCE_CLOSE: - return 0; - - case ZIP_SOURCE_STAT: - if (len < sizeof(z->st)) - return -1; - len = sizeof(z->st); - - memcpy(data, &z->st, len); - return len; - - case ZIP_SOURCE_ERROR: - { - int *e; - - if (len < sizeof(int)*2) - return -1; - - e = (int *)data; - zip_file_error_get(z->zf, e, e+1); - } - return sizeof(int)*2; - - case ZIP_SOURCE_FREE: - zip_fclose(z->zf); - free(z); - return 0; - - default: - ; - } - - return -1; -} - - -ZIP_EXTERN struct zip_source * -zip_source_function(struct zip *za, zip_source_callback zcb, void *ud) -{ - struct zip_source *zs; - - if (za == NULL) - return NULL; - - if ((zs=(struct zip_source *)malloc(sizeof(*zs))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - zs->f = zcb; - zs->ud = ud; - - return zs; -} - - -ZIP_EXTERN void -zip_source_free(struct zip_source *source) -{ - if (source == NULL) - return; - - (void)source->f(source->ud, NULL, 0, ZIP_SOURCE_FREE); - - free(source); -} - - -struct read_file { - char *fname; /* name of file to copy from */ - FILE *f; /* file to copy from */ - myoff_t off; /* start offset of */ - myoff_t len; /* lengt of data to copy */ - myoff_t remain; /* bytes remaining to be copied */ - int e[2]; /* error codes */ -}; - -static ssize_t read_file(void *state, void *data, size_t len, - enum zip_source_cmd cmd); - - - -ZIP_EXTERN struct zip_source * -zip_source_filep(struct zip *za, FILE *file, myoff_t start, myoff_t len) -{ - if (za == NULL) - return NULL; - - if (file == NULL || start < 0 || len < -1) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - return _zip_source_file_or_p(za, NULL, file, start, len); -} - - - -struct zip_source * -_zip_source_file_or_p(struct zip *za, const char *fname, FILE *file, - myoff_t start, myoff_t len) -{ - struct read_file *f; - struct zip_source *zs; - - if (file == NULL && fname == NULL) { - _zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - if ((f=(struct read_file *)malloc(sizeof(struct read_file))) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - return NULL; - } - - f->fname = NULL; - if (fname) { - if ((f->fname=strdup(fname)) == NULL) { - _zip_error_set(&za->error, ZIP_ER_MEMORY, 0); - free(f); - return NULL; - } - } - f->f = file; - f->off = start; - f->len = (len ? len : -1); - - if ((zs=zip_source_function(za, read_file, f)) == NULL) { - free(f); - return NULL; - } - - return zs; -} - - - -static ssize_t -read_file(void *state, void *data, size_t len, enum zip_source_cmd cmd) -{ - struct read_file *z; - char *buf; - int i, n; - - z = (struct read_file *)state; - buf = (char *)data; - - switch (cmd) { - case ZIP_SOURCE_OPEN: - if (z->fname) { - if ((z->f=fopen(z->fname, "rb")) == NULL) { - z->e[0] = ZIP_ER_OPEN; - z->e[1] = errno; - return -1; - } - } - - if (fseeko(z->f, z->off, SEEK_SET) < 0) { - z->e[0] = ZIP_ER_SEEK; - z->e[1] = errno; - return -1; - } - z->remain = z->len; - return 0; - - case ZIP_SOURCE_READ: - if (z->remain != -1) - n = len > z->remain ? z->remain : len; - else - n = len; - - if ((i=fread(buf, 1, n, z->f)) < 0) { - z->e[0] = ZIP_ER_READ; - z->e[1] = errno; - return -1; - } - - if (z->remain != -1) - z->remain -= i; - - return i; - - case ZIP_SOURCE_CLOSE: - if (z->fname) { - fclose(z->f); - z->f = NULL; - } - return 0; - - case ZIP_SOURCE_STAT: - { - struct zip_stat *st; - struct stat fst; - int err; - - if (len < sizeof(*st)) - return -1; - - if (z->f) - err = fstat(fileno(z->f), &fst); - else - err = stat(z->fname, &fst); - - if (err != 0) { - z->e[0] = ZIP_ER_READ; /* best match */ - z->e[1] = errno; - return -1; - } - - st = (struct zip_stat *)data; - - zip_stat_init(st); - st->mtime = fst.st_mtime; - if (z->len != -1) - st->size = z->len; - else if ((fst.st_mode&S_IFMT) == S_IFREG) - st->size = fst.st_size; - - return sizeof(*st); - } - - case ZIP_SOURCE_ERROR: - if (len < sizeof(int)*2) - return -1; - - memcpy(data, z->e, sizeof(int)*2); - return sizeof(int)*2; - - case ZIP_SOURCE_FREE: - free(z->fname); - if (z->f) - fclose(z->f); - free(z); - return 0; - - default: - ; - } - - return -1; -} - - -ZIP_EXTERN int -zip_name_locate(struct zip *za, const char *fname, int flags) -{ - return _zip_name_locate(za, fname, flags, &za->error); -} - - - -int -_zip_name_locate(struct zip *za, const char *fname, int flags, - struct zip_error *error) -{ - int (*cmp)(const char *, const char *); - const char *fn, *p; - int i, n; - - if (fname == NULL) { - _zip_error_set(error, ZIP_ER_INVAL, 0); - return -1; - } - - cmp = (flags & ZIP_FL_NOCASE) ? strcasecmp : strcmp; - - n = (flags & ZIP_FL_UNCHANGED) ? za->cdir->nentry : za->nentry; - for (i=0; i<n; i++) { - if (flags & ZIP_FL_UNCHANGED) - fn = za->cdir->entry[i].filename; - else - fn = _zip_get_name(za, i, flags, error); - - /* newly added (partially filled) entry */ - if (fn == NULL) - continue; - - if (flags & ZIP_FL_NODIR) { - p = strrchr(fn, '/'); - if (p) - fn = p+1; - } - - if (cmp(fname, fn) == 0) - return i; - } - - _zip_error_set(error, ZIP_ER_NOENT, 0); - return -1; -} - |