#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "zipint.h"
static time_t _zip_d2u_time(zip_uint16_t, zip_uint16_t);
static zip_string_t *_zip_dirent_process_ef_utf_8(const zip_dirent_t *de, zip_uint16_t id, zip_string_t *str);
static zip_extra_field_t *_zip_ef_utf8(zip_uint16_t, zip_string_t *, zip_error_t *);
void
_zip_cdir_free(zip_cdir_t *cd)
{
zip_uint64_t i;
if (!cd)
return;
for (i=0; i<cd->nentry; i++)
_zip_entry_finalize(cd->entry+i);
free(cd->entry);
_zip_string_free(cd->comment);
free(cd);
}
zip_cdir_t *
_zip_cdir_new(zip_uint64_t nentry, zip_error_t *error)
{
zip_cdir_t *cd;
zip_uint64_t i;
if ((cd=(zip_cdir_t *)malloc(sizeof(*cd))) == NULL) {
zip_error_set(error, ZIP_ER_MEMORY, 0);
return NULL;
}
if (nentry == 0)
cd->entry = NULL;
else if ((nentry > SIZE_MAX/sizeof(*(cd->entry))) || (cd->entry=(zip_entry_t *)malloc(sizeof(*(cd->entry))*(size_t)nentry)) == NULL) {
zip_error_set(error, ZIP_ER_MEMORY, 0);
free(cd);
return NULL;
}
for (i=0; i<nentry; i++)
_zip_entry_init(cd->entry+i);
cd->nentry = cd->nentry_alloc = nentry;
cd->size = cd->offset = 0;
cd->comment = NULL;
return cd;
}
zip_int64_t
_zip_cdir_write(zip_t *za, const zip_filelist_t *filelist, zip_uint64_t survivors)
{
zip_uint64_t offset, size;
zip_string_t *comment;
zip_uint8_t buf[EOCDLEN + EOCD64LEN + EOCD64LOCLEN];
zip_buffer_t *buffer;
zip_int64_t off;
zip_uint64_t i;
bool is_zip64;
int ret;
if ((off = zip_source_tell_write(za->src)) < 0) {
_zip_error_set_from_source(&za->error, za->src);
return -1;
}
offset = (zip_uint64_t)off;
is_zip64 = false;
for (i=0; i<survivors; i++) {
zip_entry_t *entry = za->entry+filelist[i].idx;
if ((ret=_zip_dirent_write(za, entry->changes ? entry->changes : entry->orig, ZIP_FL_CENTRAL)) < 0)
return -1;
if (ret)
is_zip64 = true;
}
if ((off = zip_source_tell_write(za->src)) < 0) {
_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)
is_zip64 = true;
if ((buffer = _zip_buffer_new(buf, sizeof(buf))) == NULL) {
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return -1;
}
if (is_zip64) {
_zip_buffer_put(buffer, EOCD64_MAGIC, 4);
_zip_buffer_put_64(buffer, EOCD64LEN-12);
_zip_buffer_put_16(buffer, 45);
_zip_buffer_put_16(buffer, 45);
_zip_buffer_put_32(buffer, 0);
_zip_buffer_put_32(buffer, 0);
_zip_buffer_put_64(buffer, survivors);
_zip_buffer_put_64(buffer, survivors);
_zip_buffer_put_64(buffer, size);
_zip_buffer_put_64(buffer, offset);
_zip_buffer_put(buffer, EOCD64LOC_MAGIC, 4);
_zip_buffer_put_32(buffer, 0);
_zip_buffer_put_64(buffer, offset+size);
_zip_buffer_put_32(buffer, 1);
}
_zip_buffer_put(buffer, EOCD_MAGIC, 4);
_zip_buffer_put_32(buffer, 0);
_zip_buffer_put_16(buffer, (zip_uint16_t)(survivors >= ZIP_UINT16_MAX ? ZIP_UINT16_MAX : survivors));
_zip_buffer_put_16(buffer, (zip_uint16_t)(survivors >= ZIP_UINT16_MAX ? ZIP_UINT16_MAX : survivors));
_zip_buffer_put_32(buffer, size >= ZIP_UINT32_MAX ? ZIP_UINT32_MAX : (zip_uint32_t)size);
_zip_buffer_put_32(buffer, offset >= ZIP_UINT32_MAX ? ZIP_UINT32_MAX : (zip_uint32_t)offset);
comment = za->comment_changed ? za->comment_changes : za->comment_orig;
_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);
_zip_buffer_free(buffer);
return -1;
}
if (_zip_write(za, _zip_buffer_data(buffer), _zip_buffer_offset(buffer)) < 0) {
_zip_buffer_free(buffer);
return -1;
}
_zip_buffer_free(buffer);
if (comment) {
if (_zip_write(za, comment->raw, comment->length) < 0) {
return -1;
}
}
return (zip_int64_t)size;
}
zip_dirent_t *
_zip_dirent_clone(const zip_dirent_t *sde)
{
zip_dirent_t *tde;
if ((tde=(zip_dirent_t *)malloc(sizeof(*tde))) == NULL)
return NULL;
if (sde)
memcpy(tde, sde, sizeof(*sde));
else
_zip_dirent_init(tde);
tde->changed = 0;
tde->cloned = 1;
return tde;
}
void
_zip_dirent_finalize(zip_dirent_t *zde)
{
if (!zde->cloned || zde->changed & ZIP_DIRENT_FILENAME) {
_zip_string_free(zde->filename);
zde->filename = NULL;
}
if (!zde->cloned || zde->changed & ZIP_DIRENT_EXTRA_FIELD) {
_zip_ef_free(zde->extra_fields);
zde->extra_fields = NULL;
}
if (!zde->cloned || zde->changed & ZIP_DIRENT_COMMENT) {
_zip_string_free(zde->comment);
zde->comment = NULL;
}
}
void
_zip_dirent_free(zip_dirent_t *zde)
{
if (zde == NULL)
return;
_zip_dirent_finalize(zde);
free(zde);
}
void
_zip_dirent_init(zip_dirent_t *de)
{
de->changed = 0;
de->local_extra_fields_read = 0;
de->cloned = 0;
de->version_madeby = 20 | (ZIP_OPSYS_DEFAULT << 8);
de->version_needed = 20;
de->bitflags = 0;
de->comp_method = ZIP_CM_DEFAULT;
de->last_mod = 0;
de->crc = 0;
de->comp_size = 0;
de->uncomp_size = 0;
de->filename = NULL;
de->extra_fields = NULL;
de->comment = NULL;
de->disk_number = 0;
de->int_attrib = 0;
de->ext_attrib = ZIP_EXT_ATTRIB_DEFAULT;
de->offset = 0;
}
bool
_zip_dirent_needs_zip64(const zip_dirent_t *de, zip_flags_t flags)
{
if (de->uncomp_size >= ZIP_UINT32_MAX || de->comp_size >= ZIP_UINT32_MAX
|| ((flags & ZIP_FL_CENTRAL) && de->offset >= ZIP_UINT32_MAX))
return true;
return false;
}
zip_dirent_t *
_zip_dirent_new(void)
{
zip_dirent_t *de;
if ((de=(zip_dirent_t *)malloc(sizeof(*de))) == NULL)
return NULL;
_zip_dirent_init(de);
return de;
}
zip_int64_t
_zip_dirent_read(zip_dirent_t *zde, zip_source_t *src, zip_buffer_t *buffer, bool local, zip_error_t *error)
{
zip_uint8_t buf[CDENTRYSIZE];
zip_uint16_t dostime, dosdate;
zip_uint32_t size, variable_size;
zip_uint16_t filename_len, comment_len, ef_len;
bool from_buffer = (buffer != NULL);
size = local ? LENTRYSIZE : CDENTRYSIZE;
if (buffer) {
if (_zip_buffer_left(buffer) < size) {
zip_error_set(error, ZIP_ER_NOZIP, 0);
return -1;
}
}
else {
if ((buffer = _zip_buffer_new_from_source(src, size, buf, error)) == NULL) {
return -1;
}
}
if (memcmp(_zip_buffer_get(buffer, 4), (local ? LOCAL_MAGIC : CENTRAL_MAGIC), 4) != 0) {
zip_error_set(error, ZIP_ER_NOZIP, 0);
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
_zip_dirent_init(zde);
if (!local)
zde->version_madeby = _zip_buffer_get_16(buffer);
else
zde->version_madeby = 0;
zde->version_needed = _zip_buffer_get_16(buffer);
zde->bitflags = _zip_buffer_get_16(buffer);
zde->comp_method = _zip_buffer_get_16(buffer);
dostime = _zip_buffer_get_16(buffer);
dosdate = _zip_buffer_get_16(buffer);
zde->last_mod = _zip_d2u_time(dostime, dosdate);
zde->crc = _zip_buffer_get_32(buffer);
zde->comp_size = _zip_buffer_get_32(buffer);
zde->uncomp_size = _zip_buffer_get_32(buffer);
filename_len = _zip_buffer_get_16(buffer);
ef_len = _zip_buffer_get_16(buffer);
if (local) {
comment_len = 0;
zde->disk_number = 0;
zde->int_attrib = 0;
zde->ext_attrib = 0;
zde->offset = 0;
} else {
comment_len = _zip_buffer_get_16(buffer);
zde->disk_number = _zip_buffer_get_16(buffer);
zde->int_attrib = _zip_buffer_get_16(buffer);
zde->ext_attrib = _zip_buffer_get_32(buffer);
zde->offset = _zip_buffer_get_32(buffer);
}
if (!_zip_buffer_ok(buffer)) {
zip_error_set(error, ZIP_ER_INTERNAL, 0);
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
zde->filename = NULL;
zde->extra_fields = NULL;
zde->comment = NULL;
variable_size = (zip_uint32_t)filename_len+(zip_uint32_t)ef_len+(zip_uint32_t)comment_len;
if (from_buffer) {
if (_zip_buffer_left(buffer) < variable_size) {
zip_error_set(error, ZIP_ER_INCONS, 0);
return -1;
}
}
else {
_zip_buffer_free(buffer);
if ((buffer = _zip_buffer_new_from_source(src, variable_size, NULL, error)) == NULL) {
return -1;
}
}
if (filename_len) {
zde->filename = _zip_read_string(buffer, src, filename_len, 1, error);
if (!zde->filename) {
if (zip_error_code_zip(error) == ZIP_ER_EOF) {
zip_error_set(error, ZIP_ER_INCONS, 0);
}
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
if (zde->bitflags & ZIP_GPBF_ENCODING_UTF_8) {
if (_zip_guess_encoding(zde->filename, ZIP_ENCODING_UTF8_KNOWN) == ZIP_ENCODING_ERROR) {
zip_error_set(error, ZIP_ER_INCONS, 0);
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
}
}
if (ef_len) {
zip_uint8_t *ef = _zip_read_data(buffer, src, ef_len, 0, error);
if (ef == NULL) {
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
if (!_zip_ef_parse(ef, ef_len, local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL, &zde->extra_fields, error)) {
free(ef);
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
free(ef);
if (local)
zde->local_extra_fields_read = 1;
}
if (comment_len) {
zde->comment = _zip_read_string(buffer, src, comment_len, 0, error);
if (!zde->comment) {
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
if (zde->bitflags & ZIP_GPBF_ENCODING_UTF_8) {
if (_zip_guess_encoding(zde->comment, ZIP_ENCODING_UTF8_KNOWN) == ZIP_ENCODING_ERROR) {
zip_error_set(error, ZIP_ER_INCONS, 0);
if (!from_buffer) {
_zip_buffer_free(buffer);
}
return -1;
}
}
}
zde->filename = _zip_dirent_process_ef_utf_8(zde, ZIP_EF_UTF_8_NAME, zde->filename);
zde->comment = _zip_dirent_process_ef_utf_8(zde, ZIP_EF_UTF_8_COMMENT, zde->comment);
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);
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) {
(void)_zip_buffer_skip(ef_buffer, 8);
}
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(buffer);
}
if (!_zip_buffer_eof(ef_buffer)) {
zip_error_set(error, ZIP_ER_INCONS, 0);
_zip_buffer_free(ef_buffer);
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) {
_zip_buffer_free(buffer);
}
return -1;
}
if (!from_buffer) {
_zip_buffer_free(buffer);
}
if (zde->offset > ZIP_INT64_MAX) {
zip_error_set(error, ZIP_ER_SEEK, EFBIG);
return -1;
}
zde->extra_fields = _zip_ef_remove_internal(zde->extra_fields);
return (zip_int64_t)(size + variable_size);
}
static zip_string_t *
_zip_dirent_process_ef_utf_8(const zip_dirent_t *de, zip_uint16_t id, zip_string_t *str)
{
zip_uint16_t ef_len;
zip_uint32_t ef_crc;
zip_buffer_t *buffer;
const zip_uint8_t *ef = _zip_ef_get_by_id(de->extra_fields, &ef_len, id, 0, ZIP_EF_BOTH, NULL);
if (ef == NULL || ef_len < 5 || ef[0] != 1) {
return str;
}
if ((buffer = _zip_buffer_new((zip_uint8_t *)ef, ef_len)) == NULL) {
return str;
}
_zip_buffer_get_8(buffer);
ef_crc = _zip_buffer_get_32(buffer);
if (_zip_string_crc32(str) == ef_crc) {
zip_uint16_t len = (zip_uint16_t)_zip_buffer_left(buffer);
zip_string_t *ef_str = _zip_string_new(_zip_buffer_get(buffer, len), len, ZIP_FL_ENC_UTF_8, NULL);
if (ef_str != NULL) {
_zip_string_free(str);
str = ef_str;
}
}
_zip_buffer_free(buffer);
return str;
}
zip_int32_t
_zip_dirent_size(zip_source_t *src, zip_uint16_t flags, zip_error_t *error)
{
zip_int32_t size;
bool local = (flags & ZIP_EF_LOCAL) != 0;
int i;
zip_uint8_t b[6];
zip_buffer_t *buffer;
size = local ? LENTRYSIZE : CDENTRYSIZE;
if (zip_source_seek(src, local ? 26 : 28, SEEK_CUR) < 0) {
_zip_error_set_from_source(error, src);
return -1;
}
if ((buffer = _zip_buffer_new_from_source(src, local ? 4 : 6, b, error)) == NULL) {
return -1;
}
for (i=0; i<(local ? 2 : 3); i++) {
size += _zip_buffer_get_16(buffer);
}
if (!_zip_buffer_eof(buffer)) {
zip_error_set(error, ZIP_ER_INTERNAL, 0);
_zip_buffer_free(buffer);
return -1;
}
_zip_buffer_free(buffer);
return size;
}
int
_zip_dirent_write(zip_t *za, zip_dirent_t *de, zip_flags_t flags)
{
zip_uint16_t dostime, dosdate;
zip_encoding_type_t com_enc, name_enc;
zip_extra_field_t *ef;
zip_extra_field_t *ef64;
zip_uint32_t ef_total_size;
bool is_zip64;
bool is_really_zip64;
zip_uint8_t buf[CDENTRYSIZE];
zip_buffer_t *buffer;
ef = NULL;
name_enc = _zip_guess_encoding(de->filename, ZIP_ENCODING_UNKNOWN);
com_enc = _zip_guess_encoding(de->comment, ZIP_ENCODING_UNKNOWN);
if ((name_enc == ZIP_ENCODING_UTF8_KNOWN && com_enc == ZIP_ENCODING_ASCII) ||
(name_enc == ZIP_ENCODING_ASCII && com_enc == ZIP_ENCODING_UTF8_KNOWN) ||
(name_enc == ZIP_ENCODING_UTF8_KNOWN && com_enc == ZIP_ENCODING_UTF8_KNOWN))
de->bitflags |= ZIP_GPBF_ENCODING_UTF_8;
else {
de->bitflags &= (zip_uint16_t)~ZIP_GPBF_ENCODING_UTF_8;
if (name_enc == ZIP_ENCODING_UTF8_KNOWN) {
ef = _zip_ef_utf8(ZIP_EF_UTF_8_NAME, de->filename, &za->error);
if (ef == NULL)
return -1;
}
if ((flags & ZIP_FL_LOCAL) == 0 && com_enc == ZIP_ENCODING_UTF8_KNOWN){
zip_extra_field_t *ef2 = _zip_ef_utf8(ZIP_EF_UTF_8_COMMENT, de->comment, &za->error);
if (ef2 == NULL) {
_zip_ef_free(ef);
return -1;
}
ef2->next = ef;
ef = ef2;
}
}
is_really_zip64 = _zip_dirent_needs_zip64(de, flags);
is_zip64 = (flags & (ZIP_FL_LOCAL|ZIP_FL_FORCE_ZIP64)) == (ZIP_FL_LOCAL|ZIP_FL_FORCE_ZIP64) || is_really_zip64;
if (is_zip64) {
zip_uint8_t ef_zip64[EFZIP64SIZE];
zip_buffer_t *ef_buffer = _zip_buffer_new(ef_zip64, sizeof(ef_zip64));
if (ef_buffer == NULL) {
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
_zip_ef_free(ef);
return -1;
}
if (flags & ZIP_FL_LOCAL) {
if ((flags & ZIP_FL_FORCE_ZIP64) || de->comp_size > ZIP_UINT32_MAX || de->uncomp_size > ZIP_UINT32_MAX) {
_zip_buffer_put_64(ef_buffer, de->uncomp_size);
_zip_buffer_put_64(ef_buffer, de->comp_size);
}
}
else {
if ((flags & ZIP_FL_FORCE_ZIP64) || de->comp_size > ZIP_UINT32_MAX || de->uncomp_size > ZIP_UINT32_MAX || de->offset > ZIP_UINT32_MAX) {
if (de->uncomp_size >= ZIP_UINT32_MAX) {
_zip_buffer_put_64(ef_buffer, de->uncomp_size);
}
if (de->comp_size >= ZIP_UINT32_MAX) {
_zip_buffer_put_64(ef_buffer, de->comp_size);
}
if (de->offset >= ZIP_UINT32_MAX) {
_zip_buffer_put_64(ef_buffer, de->offset);
}
}
}
if (!_zip_buffer_ok(ef_buffer)) {
zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
_zip_buffer_free(ef_buffer);
_zip_ef_free(ef);
return -1;
}
ef64 = _zip_ef_new(ZIP_EF_ZIP64, (zip_uint16_t)(_zip_buffer_offset(ef_buffer)), ef_zip64, ZIP_EF_BOTH);
_zip_buffer_free(ef_buffer);
ef64->next = ef;
ef = ef64;
}
if ((buffer = _zip_buffer_new(buf, sizeof(buf))) == NULL) {
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
_zip_ef_free(ef);
return -1;
}
_zip_buffer_put(buffer, (flags & ZIP_FL_LOCAL) ? LOCAL_MAGIC : CENTRAL_MAGIC, 4);
if ((flags & ZIP_FL_LOCAL) == 0) {
_zip_buffer_put_16(buffer, (zip_uint16_t)(is_really_zip64 ? 45 : de->version_madeby));
}
_zip_buffer_put_16(buffer, (zip_uint16_t)(is_really_zip64 ? 45 : de->version_needed));
_zip_buffer_put_16(buffer, de->bitflags&0xfff9);
_zip_buffer_put_16(buffer, (zip_uint16_t)de->comp_method);
_zip_u2d_time(de->last_mod, &dostime, &dosdate);
_zip_buffer_put_16(buffer, dostime);
_zip_buffer_put_16(buffer, dosdate);
_zip_buffer_put_32(buffer, de->crc);
if (((flags & ZIP_FL_LOCAL) == ZIP_FL_LOCAL) && ((de->comp_size >= ZIP_UINT32_MAX) || (de->uncomp_size >= ZIP_UINT32_MAX))) {
_zip_buffer_put_32(buffer, ZIP_UINT32_MAX);
_zip_buffer_put_32(buffer, ZIP_UINT32_MAX);
}
else {
if (de->comp_size < ZIP_UINT32_MAX) {
_zip_buffer_put_32(buffer, (zip_uint32_t)de->comp_size);
}
else {
_zip_buffer_put_32(buffer, ZIP_UINT32_MAX);
}
if (de->uncomp_size < ZIP_UINT32_MAX) {
_zip_buffer_put_32(buffer, (zip_uint32_t)de->uncomp_size);
}
else {
_zip_buffer_put_32(buffer, ZIP_UINT32_MAX);
}
}
_zip_buffer_put_16(buffer, _zip_string_length(de->filename));
ef_total_size = (zip_uint32_t)_zip_ef_size(de->extra_fields, flags) + (zip_uint32_t)_zip_ef_size(ef, ZIP_EF_BOTH);
_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_uint16_t)de->disk_number);
_zip_buffer_put_16(buffer, de->int_attrib);
_zip_buffer_put_32(buffer, de->ext_attrib);
if (de->offset < ZIP_UINT32_MAX)
_zip_buffer_put_32(buffer, (zip_uint32_t)de->offset);
else
_zip_buffer_put_32(buffer, ZIP_UINT32_MAX);
}
if (!_zip_buffer_ok(buffer)) {
zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
_zip_buffer_free(buffer);
_zip_ef_free(ef);
return -1;
}
if (_zip_write(za, buf, _zip_buffer_offset(buffer)) < 0) {
_zip_buffer_free(buffer);
_zip_ef_free(ef);
return -1;
}
_zip_buffer_free(buffer);
if (de->filename) {
if (_zip_string_write(za, de->filename) < 0) {
_zip_ef_free(ef);
return -1;
}
}
if (ef) {
if (_zip_ef_write(za, ef, ZIP_EF_BOTH) < 0) {
_zip_ef_free(ef);
return -1;
}
}
_zip_ef_free(ef);
if (de->extra_fields) {
if (_zip_ef_write(za, de->extra_fields, flags) < 0) {
return -1;
}
}
if ((flags & ZIP_FL_LOCAL) == 0) {
if (de->comment) {
if (_zip_string_write(za, de->comment) < 0) {
return -1;
}
}
}
return is_zip64;
}
static time_t
_zip_d2u_time(zip_uint16_t dtime, zip_uint16_t ddate)
{
struct tm tm;
memset(&tm, 0, sizeof(tm));
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);
}
static zip_extra_field_t *
_zip_ef_utf8(zip_uint16_t id, zip_string_t *str, zip_error_t *error)
{
const zip_uint8_t *raw;
zip_uint32_t len;
zip_buffer_t *buffer;
zip_extra_field_t *ef;
if ((raw=_zip_string_get(str, &len, ZIP_FL_ENC_RAW, NULL)) == NULL) {
return NULL;
}
if (len+5 > ZIP_UINT16_MAX) {
zip_error_set(error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((buffer = _zip_buffer_new(NULL, len+5)) == NULL) {
zip_error_set(error, ZIP_ER_MEMORY, 0);
return NULL;
}
_zip_buffer_put_8(buffer, 1);
_zip_buffer_put_32(buffer, _zip_string_crc32(str));
_zip_buffer_put(buffer, raw, len);
if (!_zip_buffer_ok(buffer)) {
zip_error_set(error, ZIP_ER_INTERNAL, 0);
_zip_buffer_free(buffer);
return NULL;
}
ef = _zip_ef_new(id, (zip_uint16_t)(_zip_buffer_offset(buffer)), _zip_buffer_data(buffer), ZIP_EF_BOTH);
_zip_buffer_free(buffer);
return ef;
}
zip_dirent_t *
_zip_get_dirent(zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_error_t *error)
{
if (error == NULL)
error = &za->error;
if (idx >= za->nentry) {
zip_error_set(error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((flags & ZIP_FL_UNCHANGED) || za->entry[idx].changes == NULL) {
if (za->entry[idx].orig == NULL) {
zip_error_set(error, ZIP_ER_INVAL, 0);
return NULL;
}
if (za->entry[idx].deleted && (flags & ZIP_FL_UNCHANGED) == 0) {
zip_error_set(error, ZIP_ER_DELETED, 0);
return NULL;
}
return za->entry[idx].orig;
}
else
return za->entry[idx].changes;
}
void
_zip_u2d_time(time_t intime, zip_uint16_t *dtime, zip_uint16_t *ddate)
{
struct tm *tm;
tm = localtime(&intime);
if (tm->tm_year < 80) {
tm->tm_year = 80;
}
*ddate = (zip_uint16_t)(((tm->tm_year+1900-1980)<<9) + ((tm->tm_mon+1)<<5) + tm->tm_mday);
*dtime = (zip_uint16_t)(((tm->tm_hour)<<11) + ((tm->tm_min)<<5) + ((tm->tm_sec)>>1));
return;
}