diff options
Diffstat (limited to 'ext/zip/lib/zip_source_zip_new.c')
| -rw-r--r-- | ext/zip/lib/zip_source_zip_new.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/ext/zip/lib/zip_source_zip_new.c b/ext/zip/lib/zip_source_zip_new.c deleted file mode 100644 index c19a2917f0..0000000000 --- a/ext/zip/lib/zip_source_zip_new.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - zip_source_zip_new.c -- prepare data structures for zip_fopen/zip_source_zip - Copyright (C) 2012-2015 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 <stdlib.h> - -#include "zipint.h" - - -zip_source_t * -_zip_source_zip_new(zip_t *za, zip_t *srcza, zip_uint64_t srcidx, zip_flags_t flags, zip_uint64_t start, zip_uint64_t len, const char *password) -{ - zip_compression_implementation comp_impl; - zip_encryption_implementation enc_impl; - zip_source_t *src, *s2; - zip_uint64_t offset; - struct zip_stat st; - - if (za == NULL) - return NULL; - - if (srcza == NULL || 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) || srcza->entry[srcidx].deleted)) { - zip_error_set(&za->error, ZIP_ER_CHANGED, 0); - return NULL; - } - - if (zip_stat_index(srcza, srcidx, flags|ZIP_FL_UNCHANGED, &st) < 0) { - zip_error_set(&za->error, ZIP_ER_INTERNAL, 0); - return NULL; - } - - if (flags & ZIP_FL_ENCRYPTED) - flags |= ZIP_FL_COMPRESSED; - - if ((start > 0 || len > 0) && (flags & ZIP_FL_COMPRESSED)) { - zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - /* overflow or past end of file */ - if ((start > 0 || len > 0) && (start+len < start || start+len > st.size)) { - zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return NULL; - } - - enc_impl = NULL; - if (((flags & ZIP_FL_ENCRYPTED) == 0) && (st.encryption_method != ZIP_EM_NONE)) { - if (password == NULL) { - zip_error_set(&za->error, ZIP_ER_NOPASSWD, 0); - return NULL; - } - if ((enc_impl=_zip_get_encryption_implementation(st.encryption_method)) == NULL) { - zip_error_set(&za->error, ZIP_ER_ENCRNOTSUPP, 0); - return NULL; - } - } - - comp_impl = NULL; - if ((flags & ZIP_FL_COMPRESSED) == 0) { - if (st.comp_method != ZIP_CM_STORE) { - if ((comp_impl=_zip_get_compression_implementation(st.comp_method)) == NULL) { - zip_error_set(&za->error, ZIP_ER_COMPNOTSUPP, 0); - return NULL; - } - } - } - - if ((offset=_zip_file_get_offset(srcza, srcidx, &za->error)) == 0) - return NULL; - - if (st.comp_size == 0) { - return zip_source_buffer(za, NULL, 0, 0); - } - - if (start+len > 0 && enc_impl == NULL && comp_impl == NULL) { - struct zip_stat st2; - - st2.size = len ? len : st.size-start; - st2.comp_size = st2.size; - st2.comp_method = ZIP_CM_STORE; - st2.mtime = st.mtime; - st2.valid = ZIP_STAT_SIZE|ZIP_STAT_COMP_SIZE|ZIP_STAT_COMP_METHOD|ZIP_STAT_MTIME; - - if ((src = _zip_source_window_new(srcza->src, offset+start, st2.size, &st2, &za->error)) == NULL) { - return NULL; - } - } - else { - if ((src = _zip_source_window_new(srcza->src, offset, st.comp_size, &st, &za->error)) == NULL) { - return NULL; - } - } - - if (_zip_source_set_source_archive(src, srcza) < 0) { - zip_source_free(src); - return NULL; - } - - /* creating a layered source calls zip_keep() on the lower layer, so we free it */ - - if (enc_impl) { - s2 = enc_impl(za, src, st.encryption_method, 0, password); - zip_source_free(src); - if (s2 == NULL) { - return NULL; - } - src = s2; - } - if (comp_impl) { - s2 = comp_impl(za, src, st.comp_method, 0); - zip_source_free(src); - if (s2 == NULL) { - return NULL; - } - src = s2; - } - if (((flags & ZIP_FL_COMPRESSED) == 0 || st.comp_method == ZIP_CM_STORE) && (len == 0 || len == st.comp_size)) { - /* when reading the whole file, check for CRC errors */ - s2 = zip_source_crc(za, src, 1); - zip_source_free(src); - if (s2 == NULL) { - return NULL; - } - src = s2; - } - - if (start+len > 0 && (comp_impl || enc_impl)) { - s2 = zip_source_window(za, src, start, len ? len : st.size-start); - zip_source_free(src); - if (s2 == NULL) { - return NULL; - } - src = s2; - } - - return src; -} |