ZIP_EXTERN int
zip_file_extra_field_delete_by_id(struct zip *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, zip_flags_t flags)
{
struct zip_dirent *de;
if ((flags & ZIP_EF_BOTH) == 0) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (((flags & ZIP_EF_BOTH) == ZIP_EF_BOTH) && (ef_idx != ZIP_EXTRA_FIELD_ALL)) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
return -1;
if (ZIP_IS_RDONLY(za)) {
_zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
return -1;
}
if (_zip_file_extra_field_prepare_for_change(za, idx) < 0)
return -1;
de = za->entry[idx].changes;
de->extra_fields = _zip_ef_delete_by_id(de->extra_fields, ef_id, ef_idx, flags);
return 0;
}
ZIP_EXTERN zip_int16_t
zip_file_extra_fields_count_by_id(struct zip *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_flags_t flags)
{
struct zip_dirent *de;
struct zip_extra_field *ef;
zip_uint16_t n;
if ((flags & ZIP_EF_BOTH) == 0) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if ((de=_zip_get_dirent(za, idx, flags, &za->error)) == NULL)
return -1;
if (flags & ZIP_FL_LOCAL)
if (_zip_read_local_ef(za, idx) < 0)
return -1;
n = 0;
for (ef=de->extra_fields; ef; ef=ef->next)
if (ef->id == ef_id && (ef->flags & flags & ZIP_EF_BOTH))
n++;
return (zip_int16_t)n;
}
const char *
_zip_get_name(struct zip *za, zip_uint64_t idx, zip_flags_t flags, struct zip_error *error)
{
struct zip_dirent *de;
const zip_uint8_t *str;
if ((de=_zip_get_dirent(za, idx, flags, error)) == NULL)
return NULL;
if ((str=_zip_string_get(de->filename, NULL, flags, error)) == NULL)
return NULL;
return (const char *)str;
}
int
zip_file_set_external_attributes(struct zip *za, zip_uint64_t idx, zip_flags_t flags, zip_uint8_t opsys, zip_uint32_t attributes)
{
struct zip_entry *e;
int changed;
zip_uint8_t unchanged_opsys;
zip_uint32_t unchanged_attributes;
if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
return -1;
if (ZIP_IS_RDONLY(za)) {
_zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
return -1;
}
e = za->entry+idx;
unchanged_opsys = e->orig ? e->orig->version_madeby>>8 : ZIP_OPSYS_DEFAULT;
unchanged_attributes = e->orig ? e->orig->ext_attrib : ZIP_EXT_ATTRIB_DEFAULT;
changed = (opsys != unchanged_opsys || attributes != unchanged_attributes);
if (changed) {
if (e->changes == NULL) {
if ((e->changes=_zip_dirent_clone(e->orig)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return -1;
}
}
e->changes->version_madeby = (opsys << 8) | (e->changes->version_madeby & 0xff);
e->changes->ext_attrib = attributes;
e->changes->changed |= ZIP_DIRENT_ATTRIBUTES;
}
else if (e->changes) {
e->changes->changed &= ~ZIP_DIRENT_ATTRIBUTES;
if (e->changes->changed == 0) {
_zip_dirent_free(e->changes);
e->changes = NULL;
}
else {
e->changes->version_madeby = (unchanged_opsys << 8) | (e->changes->version_madeby & 0xff);
e->changes->ext_attrib = unchanged_attributes;
}
}
return 0;
}
int
zip_file_get_external_attributes(zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_uint8_t *opsys, zip_uint32_t *attributes)
{
zip_dirent_t *de;
if ((de=_zip_get_dirent(za, idx, flags, NULL)) == NULL)
return -1;
if (opsys)
*opsys = (zip_uint8_t)((de->version_madeby >> 8) & 0xff);
if (attributes)
*attributes = de->ext_attrib;
return 0;
}
int
zip_file_get_external_attributes(struct zip *za, zip_uint64_t idx, zip_flags_t flags, zip_uint8_t *opsys, zip_uint32_t *attributes)
{
struct zip_dirent *de;
zip_uint32_t len;
const zip_uint8_t *str;
if ((de=_zip_get_dirent(za, idx, flags, NULL)) == NULL)
return -1;
if (opsys)
*opsys = (de->version_madeby >> 8) & 0xff;
if (attributes)
*attributes = de->ext_attrib;
return 0;
}
ZIP_EXTERN const char *
zip_file_get_comment(struct zip *za, zip_uint64_t idx, zip_uint32_t *lenp, zip_flags_t flags)
{
struct zip_dirent *de;
zip_uint32_t len;
const zip_uint8_t *str;
if ((de=_zip_get_dirent(za, idx, flags, NULL)) == NULL)
return NULL;
if ((str=_zip_string_get(de->comment, &len, flags, &za->error)) == NULL)
return NULL;
if (lenp)
*lenp = len;
return (const char *)str;
}
ZIP_EXTERN const zip_uint8_t *
zip_file_extra_field_get(struct zip *za, zip_uint64_t idx, zip_uint16_t ef_idx, zip_uint16_t *idp, zip_uint16_t *lenp, zip_flags_t flags)
{
static const zip_uint8_t empty[1] = { '\0' };
struct zip_dirent *de;
struct zip_extra_field *ef;
int i;
if ((flags & ZIP_EF_BOTH) == 0) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((de=_zip_get_dirent(za, idx, flags, &za->error)) == NULL)
return NULL;
if (flags & ZIP_FL_LOCAL)
if (_zip_read_local_ef(za, idx) < 0)
return NULL;
i = 0;
for (ef=de->extra_fields; ef; ef=ef->next) {
if (ef->flags & flags & ZIP_EF_BOTH) {
if (i < ef_idx) {
i++;
continue;
}
if (idp)
*idp = ef->id;
if (lenp)
*lenp = ef->size;
if (ef->size > 0)
return ef->data;
else
return empty;
}
}
_zip_error_set(&za->error, ZIP_ER_NOENT, 0);
return NULL;
}
ZIP_EXTERN const zip_uint8_t *
zip_file_extra_field_get_by_id(struct zip *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, zip_uint16_t *lenp, zip_flags_t flags)
{
struct zip_dirent *de;
if ((flags & ZIP_EF_BOTH) == 0) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((de=_zip_get_dirent(za, idx, flags, &za->error)) == NULL)
return NULL;
if (flags & ZIP_FL_LOCAL)
if (_zip_read_local_ef(za, idx) < 0)
return NULL;
return _zip_ef_get_by_id(de->extra_fields, lenp, ef_id, ef_idx, flags, &za->error);
}
ZIP_EXTERN int zip_file_set_mtime(zip_t *za, zip_uint64_t idx, time_t mtime, zip_flags_t flags)
{
zip_entry_t *e;
int changed;
if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
return -1;
if (ZIP_IS_RDONLY(za)) {
zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
return -1;
}
e = za->entry+idx;
changed = e->orig == NULL || mtime != e->orig->last_mod;
if (changed) {
if (e->changes == NULL) {
if ((e->changes=_zip_dirent_clone(e->orig)) == NULL) {
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return -1;
}
}
e->changes->last_mod = mtime;
e->changes->changed |= ZIP_DIRENT_LAST_MOD;
}
else {
if (e->changes) {
e->changes->changed &= ~ZIP_DIRENT_LAST_MOD;
if (e->changes->changed == 0) {
_zip_dirent_free(e->changes);
e->changes = NULL;
}
}
}
return 0;
}
ZIP_EXTERN int
zip_file_set_comment(struct zip *za, zip_uint64_t idx,
const char *comment, zip_uint16_t len, zip_flags_t flags)
{
struct zip_entry *e;
struct zip_string *cstr;
struct zip_dirent *de;
int changed;
if ((de=_zip_get_dirent(za, idx, 0, NULL)) == NULL)
return -1;
if (ZIP_IS_RDONLY(za)) {
_zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
return -1;
}
if (len > 0 && comment == NULL) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (len > 0) {
if ((cstr=_zip_string_new((const zip_uint8_t *)comment, len, flags, &za->error)) == NULL)
return -1;
if ((flags & ZIP_FL_ENCODING_ALL) == ZIP_FL_ENC_GUESS && _zip_guess_encoding(cstr, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_UTF8_GUESSED)
cstr->encoding = ZIP_ENCODING_UTF8_KNOWN;
}
else
cstr = NULL;
e = za->entry+idx;
if (e->changes) {
_zip_string_free(e->changes->comment);
e->changes->comment = NULL;
e->changes->changed &= ~ZIP_DIRENT_COMMENT;
}
if (e->orig && e->orig->comment)
changed = !_zip_string_equal(e->orig->comment, cstr);
else
changed = (cstr != NULL);
if (changed) {
if (e->changes == NULL) {
if ((e->changes=_zip_dirent_clone(e->orig)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return -1;
}
}
e->changes->comment = cstr;
e->changes->changed |= ZIP_DIRENT_COMMENT;
}
else {
_zip_string_free(cstr);
if (e->changes && e->changes->changed == 0) {
_zip_dirent_free(e->changes);
e->changes = NULL;
}
}
return 0;
}
ZIP_EXTERN int
zip_file_extra_field_set(struct zip *za, zip_uint64_t idx, zip_uint16_t ef_id, zip_uint16_t ef_idx, const zip_uint8_t *data, zip_uint16_t len, zip_flags_t flags)
{
struct zip_dirent *de;
zip_uint16_t ls, cs;
struct zip_extra_field *ef, *ef_prev, *ef_new;
int i, found, new_len;
if ((flags & ZIP_EF_BOTH) == 0) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
return -1;
if (ZIP_IS_RDONLY(za)) {
_zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
return -1;
}
if (ZIP_EF_IS_INTERNAL(ef_id)) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (_zip_file_extra_field_prepare_for_change(za, idx) < 0)
return -1;
de = za->entry[idx].changes;
ef = de->extra_fields;
ef_prev = NULL;
i = 0;
found = 0;
for (; ef; ef=ef->next) {
if (ef->id == ef_id && (ef->flags & flags & ZIP_EF_BOTH)) {
if (i == ef_idx) {
found = 1;
break;
}
i++;
}
ef_prev = ef;
}
if (i < ef_idx && ef_idx != ZIP_EXTRA_FIELD_NEW) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if (flags & ZIP_EF_LOCAL)
ls = _zip_ef_size(de->extra_fields, ZIP_EF_LOCAL);
else
ls = 0;
if (flags & ZIP_EF_CENTRAL)
cs = _zip_ef_size(de->extra_fields, ZIP_EF_CENTRAL);
else
cs = 0;
new_len = ls > cs ? ls : cs;
if (found)
new_len -= ef->size + 4;
new_len += len + 4;
if (new_len > ZIP_UINT16_MAX) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if ((ef_new=_zip_ef_new(ef_id, len, data, flags)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return -1;
}
if (found) {
if ((ef->flags & ZIP_EF_BOTH) == (flags & ZIP_EF_BOTH)) {
ef_new->next = ef->next;
ef->next = NULL;
_zip_ef_free(ef);
if (ef_prev)
ef_prev->next = ef_new;
else
de->extra_fields = ef_new;
}
else {
ef->flags &= ~(flags & ZIP_EF_BOTH);
ef_new->next = ef->next;
ef->next = ef_new;
}
}
else if (ef_prev) {
ef_new->next = ef_prev->next;
ef_prev->next = ef_new;
}
else
de->extra_fields = ef_new;
return 0;
}
