diff options
Diffstat (limited to 'ext/zip/lib/zip_extra_field.c')
| -rw-r--r-- | ext/zip/lib/zip_extra_field.c | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/ext/zip/lib/zip_extra_field.c b/ext/zip/lib/zip_extra_field.c deleted file mode 100644 index 133322aeb1..0000000000 --- a/ext/zip/lib/zip_extra_field.c +++ /dev/null @@ -1,438 +0,0 @@ -/* - zip_extra_field.c -- manipulate extra fields - 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 <string.h> - -#include "zipint.h" - - -zip_extra_field_t * -_zip_ef_clone(const zip_extra_field_t *ef, zip_error_t *error) -{ - zip_extra_field_t *head, *prev, *def; - - head = prev = NULL; - - while (ef) { - if ((def=_zip_ef_new(ef->id, ef->size, ef->data, ef->flags)) == NULL) { - zip_error_set(error, ZIP_ER_MEMORY, 0); - _zip_ef_free(head); - return NULL; - } - - if (head == NULL) - head = def; - if (prev) - prev->next = def; - prev = def; - - ef = ef->next; - } - - return head; -} - - -zip_extra_field_t * -_zip_ef_delete_by_id(zip_extra_field_t *ef, zip_uint16_t id, zip_uint16_t id_idx, zip_flags_t flags) -{ - zip_extra_field_t *head, *prev; - int i; - - i = 0; - head = ef; - prev = NULL; - for (; ef; ef=(prev ? prev->next : head)) { - if ((ef->flags & flags & ZIP_EF_BOTH) && ((ef->id == id) || (id == ZIP_EXTRA_FIELD_ALL))) { - if (id_idx == ZIP_EXTRA_FIELD_ALL || i == id_idx) { - ef->flags &= ~(flags & ZIP_EF_BOTH); - if ((ef->flags & ZIP_EF_BOTH) == 0) { - if (prev) - prev->next = ef->next; - else - head = ef->next; - ef->next = NULL; - _zip_ef_free(ef); - - if (id_idx == ZIP_EXTRA_FIELD_ALL) - continue; - } - } - - i++; - if (i > id_idx) - break; - } - prev = ef; - } - - return head; -} - - - -void -_zip_ef_free(zip_extra_field_t *ef) -{ - zip_extra_field_t *ef2; - - while (ef) { - ef2 = ef->next; - free(ef->data); - free(ef); - ef = ef2; - } -} - - -const zip_uint8_t * -_zip_ef_get_by_id(const zip_extra_field_t *ef, zip_uint16_t *lenp, zip_uint16_t id, zip_uint16_t id_idx, zip_flags_t flags, zip_error_t *error) -{ - static const zip_uint8_t empty[1] = { '\0' }; - - int i; - - i = 0; - for (; ef; ef=ef->next) { - if (ef->id == id && (ef->flags & flags & ZIP_EF_BOTH)) { - if (i < id_idx) { - i++; - continue; - } - - if (lenp) - *lenp = ef->size; - if (ef->size > 0) - return ef->data; - else - return empty; - } - } - - zip_error_set(error, ZIP_ER_NOENT, 0); - return NULL; -} - - -zip_extra_field_t * -_zip_ef_merge(zip_extra_field_t *to, zip_extra_field_t *from) -{ - zip_extra_field_t *ef2, *tt, *tail; - int duplicate; - - if (to == NULL) - return from; - - for (tail=to; tail->next; tail=tail->next) - ; - - for (; from; from=ef2) { - ef2 = from->next; - - duplicate = 0; - for (tt=to; tt; tt=tt->next) { - if (tt->id == from->id && tt->size == from->size && memcmp(tt->data, from->data, tt->size) == 0) { - tt->flags |= (from->flags & ZIP_EF_BOTH); - duplicate = 1; - break; - } - } - - from->next = NULL; - if (duplicate) - _zip_ef_free(from); - else - tail = tail->next = from; - } - - return to; -} - - -zip_extra_field_t * -_zip_ef_new(zip_uint16_t id, zip_uint16_t size, const zip_uint8_t *data, zip_flags_t flags) -{ - zip_extra_field_t *ef; - - if ((ef=(zip_extra_field_t *)malloc(sizeof(*ef))) == NULL) - return NULL; - - ef->next = NULL; - ef->flags = flags; - ef->id = id; - ef->size = size; - if (size > 0) { - if ((ef->data=(zip_uint8_t *)_zip_memdup(data, size, NULL)) == NULL) { - free(ef); - return NULL; - } - } - else - ef->data = NULL; - - return ef; -} - - -bool -_zip_ef_parse(const zip_uint8_t *data, zip_uint16_t len, zip_flags_t flags, zip_extra_field_t **ef_head_p, zip_error_t *error) -{ - zip_buffer_t *buffer; - zip_extra_field_t *ef, *ef2, *ef_head; - - if ((buffer = _zip_buffer_new((zip_uint8_t *)data, len)) == NULL) { - zip_error_set(error, ZIP_ER_MEMORY, 0); - return false; - } - - ef_head = ef = NULL; - - while (_zip_buffer_ok(buffer) && _zip_buffer_left(buffer) >= 4) { - zip_uint16_t fid, flen; - zip_uint8_t *ef_data; - - fid = _zip_buffer_get_16(buffer); - flen = _zip_buffer_get_16(buffer); - ef_data = _zip_buffer_get(buffer, flen); - - if (ef_data == NULL) { - zip_error_set(error, ZIP_ER_INCONS, 0); - _zip_buffer_free(buffer); - _zip_ef_free(ef_head); - return false; - } - - if ((ef2=_zip_ef_new(fid, flen, ef_data, flags)) == NULL) { - zip_error_set(error, ZIP_ER_MEMORY, 0); - _zip_buffer_free(buffer); - _zip_ef_free(ef_head); - return false; - } - - if (ef_head) { - ef->next = ef2; - ef = ef2; - } - else - ef_head = ef = ef2; - } - - if (!_zip_buffer_eof(buffer)) { - /* Android APK files align stored file data with padding in extra fields; ignore. */ - /* see https://android.googlesource.com/platform/build/+/master/tools/zipalign/ZipAlign.cpp */ - size_t glen = _zip_buffer_left(buffer); - zip_uint8_t *garbage; - garbage = _zip_buffer_get(buffer, glen); - if (glen >= 4 || garbage == NULL || memcmp(garbage, "\0\0\0", glen) != 0) { - zip_error_set(error, ZIP_ER_INCONS, 0); - _zip_buffer_free(buffer); - _zip_ef_free(ef_head); - return false; - } - } - - _zip_buffer_free(buffer); - - if (ef_head_p) { - *ef_head_p = ef_head; - } - else { - _zip_ef_free(ef_head); - } - - return true; -} - - -zip_extra_field_t * -_zip_ef_remove_internal(zip_extra_field_t *ef) -{ - zip_extra_field_t *ef_head; - zip_extra_field_t *prev, *next; - - ef_head = ef; - prev = NULL; - - while (ef) { - if (ZIP_EF_IS_INTERNAL(ef->id)) { - next = ef->next; - if (ef_head == ef) - ef_head = next; - ef->next = NULL; - _zip_ef_free(ef); - if (prev) - prev->next = next; - ef = next; - } - else { - prev = ef; - ef = ef->next; - } - } - - return ef_head; -} - - -zip_uint16_t -_zip_ef_size(const zip_extra_field_t *ef, zip_flags_t flags) -{ - zip_uint16_t size; - - size = 0; - for (; ef; ef=ef->next) { - if (ef->flags & flags & ZIP_EF_BOTH) - size = (zip_uint16_t)(size+4+ef->size); - } - - return size; -} - - -int -_zip_ef_write(zip_t *za, const zip_extra_field_t *ef, zip_flags_t flags) -{ - zip_uint8_t b[4]; - zip_buffer_t *buffer = _zip_buffer_new(b, sizeof(b)); - - if (buffer == NULL) { - return -1; - } - - for (; ef; ef=ef->next) { - if (ef->flags & flags & ZIP_EF_BOTH) { - _zip_buffer_set_offset(buffer, 0); - _zip_buffer_put_16(buffer, ef->id); - _zip_buffer_put_16(buffer, ef->size); - if (!_zip_buffer_ok(buffer)) { - zip_error_set(&za->error, ZIP_ER_INTERNAL, 0); - _zip_buffer_free(buffer); - return -1; - } - if (_zip_write(za, b, 4) < 0) { - _zip_buffer_free(buffer); - return -1; - } - if (ef->size > 0) { - if (_zip_write(za, ef->data, ef->size) < 0) { - _zip_buffer_free(buffer); - return -1; - } - } - } - } - - _zip_buffer_free(buffer); - return 0; -} - - -int -_zip_read_local_ef(zip_t *za, zip_uint64_t idx) -{ - zip_entry_t *e; - unsigned char b[4]; - zip_buffer_t *buffer; - zip_uint16_t fname_len, ef_len; - - if (idx >= za->nentry) { - zip_error_set(&za->error, ZIP_ER_INVAL, 0); - return -1; - } - - e = za->entry+idx; - - if (e->orig == NULL || e->orig->local_extra_fields_read) - return 0; - - if (e->orig->offset + 26 > ZIP_INT64_MAX) { - zip_error_set(&za->error, ZIP_ER_SEEK, EFBIG); - return -1; - } - - if (zip_source_seek(za->src, (zip_int64_t)(e->orig->offset + 26), SEEK_SET) < 0) { - _zip_error_set_from_source(&za->error, za->src); - return -1; - } - - if ((buffer = _zip_buffer_new_from_source(za->src, sizeof(b), b, &za->error)) == NULL) { - return -1; - } - - fname_len = _zip_buffer_get_16(buffer); - ef_len = _zip_buffer_get_16(buffer); - - if (!_zip_buffer_eof(buffer)) { - _zip_buffer_free(buffer); - zip_error_set(&za->error, ZIP_ER_INTERNAL, 0); - return -1; - } - - _zip_buffer_free(buffer); - - if (ef_len > 0) { - zip_extra_field_t *ef; - zip_uint8_t *ef_raw; - - if (zip_source_seek(za->src, fname_len, SEEK_CUR) < 0) { - zip_error_set(&za->error, ZIP_ER_SEEK, errno); - return -1; - } - - ef_raw = _zip_read_data(NULL, za->src, ef_len, 0, &za->error); - - if (ef_raw == NULL) - return -1; - - if (!_zip_ef_parse(ef_raw, ef_len, ZIP_EF_LOCAL, &ef, &za->error)) { - free(ef_raw); - return -1; - } - free(ef_raw); - - if (ef) { - ef = _zip_ef_remove_internal(ef); - e->orig->extra_fields = _zip_ef_merge(e->orig->extra_fields, ef); - } - } - - e->orig->local_extra_fields_read = 1; - - if (e->changes && e->changes->local_extra_fields_read == 0) { - e->changes->extra_fields = e->orig->extra_fields; - e->changes->local_extra_fields_read = 1; - } - - return 0; -} |