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| author | DLL125 <134442578+DLL125@users.noreply.github.com> | 2023-07-17 14:11:12 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-17 14:11:12 +0200 |
| commit | 65765798d85258c0358b28b90aac68ed1851f49b (patch) | |
| tree | 22f573edc4e16790d9be208fce95db1134fe2ba4 /src/Common/libzip/zip_dirent.c | |
| parent | 6267b91931af87db2b95172389a6fbaac206e42e (diff) | |
| download | VeraCrypt-65765798d85258c0358b28b90aac68ed1851f49b.tar.gz VeraCrypt-65765798d85258c0358b28b90aac68ed1851f49b.zip | |
Libzip (#1152)
* Update LZMA to latest
* Update Libzip
Libzip updated to latest.
Diffstat (limited to 'src/Common/libzip/zip_dirent.c')
| -rw-r--r-- | src/Common/libzip/zip_dirent.c | 213 |
1 files changed, 129 insertions, 84 deletions
diff --git a/src/Common/libzip/zip_dirent.c b/src/Common/libzip/zip_dirent.c index 4615fc65..45a2a6a2 100644 --- a/src/Common/libzip/zip_dirent.c +++ b/src/Common/libzip/zip_dirent.c @@ -37,6 +37,7 @@ #include <string.h> #include <sys/types.h> #include <time.h> +#include <zlib.h> #include "zipint.h" @@ -127,15 +128,21 @@ _zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivor zip_uint64_t i; bool is_zip64; int ret; + zip_uint32_t cdir_crc; if ((off = zip_source_tell_write(za->src)) < 0) { - _zip_error_set_from_source(&za->error, za->src); + zip_error_set_from_source(&za->error, za->src); return -1; } offset = (zip_uint64_t)off; is_zip64 = false; + if (ZIP_WANT_TORRENTZIP(za)) { + cdir_crc = (zip_uint32_t)crc32(0, NULL, 0); + za->write_crc = &cdir_crc; + } + for (i = 0; i < survivors; i++) { zip_entry_t *entry = za->entry + filelist[i].idx; @@ -145,15 +152,17 @@ _zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivor is_zip64 = true; } + za->write_crc = NULL; + if ((off = zip_source_tell_write(za->src)) < 0) { - _zip_error_set_from_source(&za->error, za->src); + zip_error_set_from_source(&za->error, za->src); return -1; } size = (zip_uint64_t)off - offset; - if (offset > ZIP_UINT32_MAX || survivors > ZIP_UINT16_MAX) + if (offset > ZIP_UINT32_MAX || survivors > ZIP_UINT16_MAX) { is_zip64 = true; - + } if ((buffer = _zip_buffer_new(buf, sizeof(buf))) == NULL) { zip_error_set(&za->error, ZIP_ER_MEMORY, 0); @@ -186,7 +195,13 @@ _zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivor comment = za->comment_changed ? za->comment_changes : za->comment_orig; - _zip_buffer_put_16(buffer, (zip_uint16_t)(comment ? comment->length : 0)); + if (ZIP_WANT_TORRENTZIP(za)) { + _zip_buffer_put_16(buffer, TORRENTZIP_SIGNATURE_LENGTH + TORRENTZIP_CRC_LENGTH); + } + else { + _zip_buffer_put_16(buffer, (zip_uint16_t)(comment ? comment->length : 0)); + } + if (!_zip_buffer_ok(buffer)) { zip_error_set(&za->error, ZIP_ER_INTERNAL, 0); @@ -201,7 +216,15 @@ _zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivor _zip_buffer_free(buffer); - if (comment) { + if (ZIP_WANT_TORRENTZIP(za)) { + char torrentzip_comment[TORRENTZIP_SIGNATURE_LENGTH + TORRENTZIP_CRC_LENGTH + 1]; + snprintf(torrentzip_comment, sizeof(torrentzip_comment), TORRENTZIP_SIGNATURE "%08X", cdir_crc); + + if (_zip_write(za, torrentzip_comment, strlen(torrentzip_comment)) < 0) { + return -1; + } + } + else if (comment != NULL) { if (_zip_write(za, comment->raw, comment->length) < 0) { return -1; } @@ -219,7 +242,7 @@ _zip_dirent_clone(const zip_dirent_t *sde) { return NULL; if (sde) - memcpy(tde, sde, sizeof(*sde)); + (void)memcpy_s(tde, sizeof(*tde), sde, sizeof(*sde)); else _zip_dirent_init(tde); @@ -503,76 +526,18 @@ _zip_dirent_read(zip_dirent_t *zde, zip_source_t *src, zip_buffer_t *buffer, boo if (zde->uncomp_size == ZIP_UINT32_MAX || zde->comp_size == ZIP_UINT32_MAX || zde->offset == ZIP_UINT32_MAX) { zip_uint16_t got_len; - zip_buffer_t *ef_buffer; const zip_uint8_t *ef = _zip_ef_get_by_id(zde->extra_fields, &got_len, ZIP_EF_ZIP64, 0, local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL, error); - /* TODO: if got_len == 0 && !ZIP64_EOCD: no error, 0xffffffff is valid value */ - if (ef == NULL) { - if (!from_buffer) { - _zip_buffer_free(buffer); - } - return -1; - } - - if ((ef_buffer = _zip_buffer_new((zip_uint8_t *)ef, got_len)) == NULL) { - zip_error_set(error, ZIP_ER_MEMORY, 0); - if (!from_buffer) { - _zip_buffer_free(buffer); - } - return -1; - } - - if (zde->uncomp_size == ZIP_UINT32_MAX) { - zde->uncomp_size = _zip_buffer_get_64(ef_buffer); - } - else if (local) { - /* From appnote.txt: This entry in the Local header MUST - include BOTH original and compressed file size fields. */ - (void)_zip_buffer_skip(ef_buffer, 8); /* error is caught by _zip_buffer_eof() call */ - } - if (zde->comp_size == ZIP_UINT32_MAX) { - zde->comp_size = _zip_buffer_get_64(ef_buffer); - } - if (!local) { - if (zde->offset == ZIP_UINT32_MAX) { - zde->offset = _zip_buffer_get_64(ef_buffer); - } - if (zde->disk_number == ZIP_UINT16_MAX) { - zde->disk_number = _zip_buffer_get_32(ef_buffer); - } - } - - if (!_zip_buffer_eof(ef_buffer)) { - /* accept additional fields if values match */ - bool ok = true; - switch (got_len) { - case 28: - _zip_buffer_set_offset(ef_buffer, 24); - if (zde->disk_number != _zip_buffer_get_32(ef_buffer)) { - ok = false; - } - /* fallthrough */ - case 24: - _zip_buffer_set_offset(ef_buffer, 0); - if ((zde->uncomp_size != _zip_buffer_get_64(ef_buffer)) || (zde->comp_size != _zip_buffer_get_64(ef_buffer)) || (zde->offset != _zip_buffer_get_64(ef_buffer))) { - ok = false; - } - break; - - default: - ok = false; - } - if (!ok) { - zip_error_set(error, ZIP_ER_INCONS, ZIP_ER_DETAIL_INVALID_ZIP64_EF); - _zip_buffer_free(ef_buffer); + if (ef != NULL) { + if (!zip_dirent_process_ef_zip64(zde, ef, got_len, local, error)) { if (!from_buffer) { _zip_buffer_free(buffer); } return -1; } } - _zip_buffer_free(ef_buffer); } + if (!_zip_buffer_ok(buffer)) { zip_error_set(error, ZIP_ER_INTERNAL, 0); if (!from_buffer) { @@ -599,6 +564,65 @@ _zip_dirent_read(zip_dirent_t *zde, zip_source_t *src, zip_buffer_t *buffer, boo return (zip_int64_t)size + (zip_int64_t)variable_size; } +bool zip_dirent_process_ef_zip64(zip_dirent_t* zde, const zip_uint8_t* ef, zip_uint64_t got_len, bool local, zip_error_t* error) { + zip_buffer_t *ef_buffer; + + if ((ef_buffer = _zip_buffer_new((zip_uint8_t *)ef, got_len)) == NULL) { + zip_error_set(error, ZIP_ER_MEMORY, 0); + return false; + } + + if (zde->uncomp_size == ZIP_UINT32_MAX) { + zde->uncomp_size = _zip_buffer_get_64(ef_buffer); + } + else if (local) { + /* From appnote.txt: This entry in the Local header MUST + include BOTH original and compressed file size fields. */ + (void)_zip_buffer_skip(ef_buffer, 8); /* error is caught by _zip_buffer_eof() call */ + } + if (zde->comp_size == ZIP_UINT32_MAX) { + zde->comp_size = _zip_buffer_get_64(ef_buffer); + } + if (!local) { + if (zde->offset == ZIP_UINT32_MAX) { + zde->offset = _zip_buffer_get_64(ef_buffer); + } + if (zde->disk_number == ZIP_UINT16_MAX) { + zde->disk_number = _zip_buffer_get_32(ef_buffer); + } + } + + if (!_zip_buffer_eof(ef_buffer)) { + /* accept additional fields if values match */ + bool ok = true; + switch (got_len) { + case 28: + _zip_buffer_set_offset(ef_buffer, 24); + if (zde->disk_number != _zip_buffer_get_32(ef_buffer)) { + ok = false; + } + /* fallthrough */ + case 24: + _zip_buffer_set_offset(ef_buffer, 0); + if ((zde->uncomp_size != _zip_buffer_get_64(ef_buffer)) || (zde->comp_size != _zip_buffer_get_64(ef_buffer)) || (zde->offset != _zip_buffer_get_64(ef_buffer))) { + ok = false; + } + break; + + default: + ok = false; + } + if (!ok) { + zip_error_set(error, ZIP_ER_INCONS, ZIP_ER_DETAIL_INVALID_ZIP64_EF); + _zip_buffer_free(ef_buffer); + return false; + } + } + _zip_buffer_free(ef_buffer); + + return true; +} + static zip_string_t * _zip_dirent_process_ef_utf_8(const zip_dirent_t *de, zip_uint16_t id, zip_string_t *str) { @@ -728,7 +752,7 @@ _zip_dirent_size(zip_source_t *src, zip_uint16_t flags, zip_error_t *error) { size = local ? LENTRYSIZE : CDENTRYSIZE; if (zip_source_seek(src, local ? 26 : 28, SEEK_CUR) < 0) { - _zip_error_set_from_source(error, src); + zip_error_set_from_source(error, src); return -1; } @@ -901,7 +925,13 @@ _zip_dirent_write(zip_t *za, zip_dirent_t *de, zip_flags_t flags) { _zip_buffer_put_16(buffer, (zip_uint16_t)de->comp_method); } - _zip_u2d_time(de->last_mod, &dostime, &dosdate); + if (ZIP_WANT_TORRENTZIP(za)) { + dostime = 0xbc00; + dosdate = 0x2198; + } + else { + _zip_u2d_time(de->last_mod, &dostime, &dosdate); + } _zip_buffer_put_16(buffer, dostime); _zip_buffer_put_16(buffer, dosdate); @@ -937,12 +967,15 @@ _zip_dirent_write(zip_t *za, zip_dirent_t *de, zip_flags_t flags) { } _zip_buffer_put_16(buffer, _zip_string_length(de->filename)); - /* TODO: check for overflow */ - ef_total_size = (zip_uint32_t)_zip_ef_size(de->extra_fields, flags) + (zip_uint32_t)_zip_ef_size(ef, ZIP_EF_BOTH); + ef_total_size = (zip_uint32_t)_zip_ef_size(ef, ZIP_EF_BOTH); + if (!ZIP_WANT_TORRENTZIP(za)) { + /* TODO: check for overflow */ + ef_total_size += (zip_uint32_t)_zip_ef_size(de->extra_fields, flags); + } _zip_buffer_put_16(buffer, (zip_uint16_t)ef_total_size); if ((flags & ZIP_FL_LOCAL) == 0) { - _zip_buffer_put_16(buffer, _zip_string_length(de->comment)); + _zip_buffer_put_16(buffer, ZIP_WANT_TORRENTZIP(za) ? 0 : _zip_string_length(de->comment)); _zip_buffer_put_16(buffer, (zip_uint16_t)de->disk_number); _zip_buffer_put_16(buffer, de->int_attrib); _zip_buffer_put_32(buffer, de->ext_attrib); @@ -981,13 +1014,13 @@ _zip_dirent_write(zip_t *za, zip_dirent_t *de, zip_flags_t flags) { } } _zip_ef_free(ef); - if (de->extra_fields) { + if (de->extra_fields && !ZIP_WANT_TORRENTZIP(za)) { if (_zip_ef_write(za, de->extra_fields, flags) < 0) { return -1; } } - if ((flags & ZIP_FL_LOCAL) == 0) { + if ((flags & ZIP_FL_LOCAL) == 0 && !ZIP_WANT_TORRENTZIP(za)) { if (de->comment) { if (_zip_string_write(za, de->comment) < 0) { return -1; @@ -1089,15 +1122,10 @@ _zip_get_dirent(zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_error_t *err void _zip_u2d_time(time_t intime, zip_uint16_t *dtime, zip_uint16_t *ddate) { struct tm *tpm; - -#ifdef HAVE_LOCALTIME_R struct tm tm; - tpm = localtime_r(&intime, &tm); -#else - tpm = localtime(&intime); -#endif + tpm = zip_localtime(&intime, &tm); if (tpm == NULL) { - /* if localtime() fails, return an arbitrary date (1980-01-01 00:00:00) */ + /* if localtime fails, return an arbitrary date (1980-01-01 00:00:00) */ *ddate = (1 << 5) + 1; *dtime = 0; return; @@ -1108,8 +1136,6 @@ _zip_u2d_time(time_t intime, zip_uint16_t *dtime, zip_uint16_t *ddate) { *ddate = (zip_uint16_t)(((tpm->tm_year + 1900 - 1980) << 9) + ((tpm->tm_mon + 1) << 5) + tpm->tm_mday); *dtime = (zip_uint16_t)(((tpm->tm_hour) << 11) + ((tpm->tm_min) << 5) + ((tpm->tm_sec) >> 1)); - - return; } @@ -1160,3 +1186,22 @@ _zip_dirent_apply_attributes(zip_dirent_t *de, zip_file_attributes_t *attributes de->version_madeby = (de->version_madeby & 0xff) | (zip_uint16_t)(attributes->host_system << 8); } } + + +/* _zip_dirent_torrent_normalize(de); + Set values suitable for torrentzip. +*/ + +void zip_dirent_torrentzip_normalize(zip_dirent_t *de) { + de->version_madeby = 0; + de->version_needed = 20; /* 2.0 */ + de->bitflags = 2; /* maximum compression */ + de->comp_method = ZIP_CM_DEFLATE; + de->compression_level = TORRENTZIP_COMPRESSION_FLAGS; + de->disk_number = 0; + de->int_attrib = 0; + de->ext_attrib = 0; + + /* last_mod, extra_fields, and comment are normalized in zip_dirent_write() directly */ + +} |