int
zip_stat_index(struct zip *za, int index, int flags, struct zip_stat *st)
{
const char *name;
if (index < 0 || index >= za->nentry) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
if ((name=zip_get_name(za, index, flags)) == NULL)
return -1;
if ((flags & ZIP_FL_UNCHANGED) == 0
&& ZIP_ENTRY_DATA_CHANGED(za->entry+index)) {
if (za->entry[index].source->f(za->entry[index].source->ud,
st, sizeof(*st), ZIP_SOURCE_STAT) < 0) {
_zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
return -1;
}
}
else {
if (za->cdir == NULL || index >= za->cdir->nentry) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return -1;
}
st->crc = za->cdir->entry[index].crc;
st->size = za->cdir->entry[index].uncomp_size;
st->mtime = za->cdir->entry[index].last_mod;
st->comp_size = za->cdir->entry[index].comp_size;
st->comp_method = za->cdir->entry[index].comp_method;
if (za->cdir->entry[index].bitflags & ZIP_GPBF_ENCRYPTED) {
if (za->cdir->entry[index].bitflags & ZIP_GPBF_STRONG_ENCRYPTION) {
/* XXX */
st->encryption_method = ZIP_EM_UNKNOWN;
}
else
st->encryption_method = ZIP_EM_TRAD_PKWARE;
}
else
st->encryption_method = ZIP_EM_NONE;
/* st->bitflags = za->cdir->entry[index].bitflags; */
}
st->index = index;
st->name = name;
return 0;
}
struct zip_source *
zip_source_zip(struct zip *za, struct zip *srcza, int srcidx, int flags,
off_t start, off_t len)
{
struct zip_error error;
struct zip_source *zs;
struct read_zip *p;
if (za == NULL)
return NULL;
if (srcza == NULL || start < 0 || len < -1 || srcidx < 0 || 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)) {
_zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
return NULL;
}
if (len == 0)
len = -1;
if (start == 0 && len == -1)
flags |= ZIP_FL_COMPRESSED;
else
flags &= ~ZIP_FL_COMPRESSED;
if ((p=(struct read_zip *)malloc(sizeof(*p))) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
return NULL;
}
_zip_error_copy(&error, &srcza->error);
if (zip_stat_index(srcza, srcidx, flags, &p->st) < 0
|| (p->zf=zip_fopen_index(srcza, srcidx, flags)) == NULL) {
free(p);
_zip_error_copy(&za->error, &srcza->error);
_zip_error_copy(&srcza->error, &error);
return NULL;
}
p->off = start;
p->len = len;
if ((flags & ZIP_FL_COMPRESSED) == 0) {
p->st.size = p->st.comp_size = len;
p->st.comp_method = ZIP_CM_STORE;
p->st.crc = 0;
}
if ((zs=zip_source_function(za, read_zip, p)) == NULL) {
free(p);
return NULL;
}
return zs;
}
ZIP_EXTERN int
zip_close(zip_t *za)
{
zip_uint64_t i, j, survivors;
zip_int64_t off;
int error;
zip_filelist_t *filelist;
int changed;
if (za == NULL)
return -1;
changed = _zip_changed(za, &survivors);
/* don't create zip files with no entries */
if (survivors == 0) {
if ((za->open_flags & ZIP_TRUNCATE) || changed) {
if (zip_source_remove(za->src) < 0) {
_zip_error_set_from_source(&za->error, za->src);
return -1;
}
}
zip_discard(za);
return 0;
}
if (!changed) {
zip_discard(za);
return 0;
}
if (survivors > za->nentry) {
zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
if ((filelist=(zip_filelist_t *)malloc(sizeof(filelist[0])*(size_t)survivors)) == NULL)
return -1;
/* create list of files with index into original archive */
for (i=j=0; i<za->nentry; i++) {
if (za->entry[i].deleted)
continue;
if (j >= survivors) {
free(filelist);
zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
filelist[j].idx = i;
j++;
}
if (j < survivors) {
free(filelist);
zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
if (zip_source_begin_write(za->src) < 0) {
_zip_error_set_from_source(&za->error, za->src);
free(filelist);
return -1;
}
error = 0;
for (j=0; j<survivors; j++) {
int new_data;
zip_entry_t *entry;
zip_dirent_t *de;
i = filelist[j].idx;
entry = za->entry+i;
new_data = (ZIP_ENTRY_DATA_CHANGED(entry) || ZIP_ENTRY_CHANGED(entry, ZIP_DIRENT_COMP_METHOD));
/* create new local directory entry */
if (entry->changes == NULL) {
if ((entry->changes=_zip_dirent_clone(entry->orig)) == NULL) {
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
error = 1;
break;
}
}
de = entry->changes;
if (_zip_read_local_ef(za, i) < 0) {
error = 1;
break;
}
if ((off = zip_source_tell_write(za->src)) < 0) {
error = 1;
break;
}
de->offset = (zip_uint64_t)off;
if (new_data) {
zip_source_t *zs;
zs = NULL;
if (!ZIP_ENTRY_DATA_CHANGED(entry)) {
if ((zs=_zip_source_zip_new(za, za, i, ZIP_FL_UNCHANGED, 0, 0, NULL)) == NULL) {
error = 1;
break;
}
}
/* add_data writes dirent */
if (add_data(za, zs ? zs : entry->source, de) < 0) {
error = 1;
if (zs)
zip_source_free(zs);
break;
}
if (zs)
zip_source_free(zs);
}
else {
zip_uint64_t offset;
/* when copying data, all sizes are known -> no data descriptor needed */
de->bitflags &= (zip_uint16_t)~ZIP_GPBF_DATA_DESCRIPTOR;
if (_zip_dirent_write(za, de, ZIP_FL_LOCAL) < 0) {
error = 1;
break;
}
if ((offset=_zip_file_get_offset(za, i, &za->error)) == 0) {
error = 1;
break;
}
if (zip_source_seek(za->src, (zip_int64_t)offset, SEEK_SET) < 0) {
_zip_error_set_from_source(&za->error, za->src);
error = 1;
break;
}
if (copy_data(za, de->comp_size) < 0) {
error = 1;
break;
}
}
}
if (!error) {
if (write_cdir(za, filelist, survivors) < 0)
error = 1;
}
free(filelist);
if (!error) {
if (zip_source_commit_write(za->src) != 0) {
_zip_error_set_from_source(&za->error, za->src);
error = 1;
}
}
if (error) {
zip_source_rollback_write(za->src);
return -1;
}
zip_discard(za);
return 0;
}
ZIP_EXTERN int
zip_close(struct zip *za)
{
zip_uint64_t i, j, survivors;
int error;
char *temp;
FILE *out;
#ifndef _WIN32
mode_t mask;
#endif
struct zip_filelist *filelist;
int reopen_on_error;
int new_torrentzip;
int changed;
reopen_on_error = 0;
if (za == NULL)
return -1;
changed = _zip_changed(za, &survivors);
/* don't create zip files with no entries */
if (survivors == 0) {
if (za->zn && ((za->open_flags & ZIP_TRUNCATE) || (changed && za->zp))) {
if (remove(za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_REMOVE, errno);
return -1;
}
}
zip_discard(za);
return 0;
}
if (!changed) {
zip_discard(za);
return 0;
}
if (survivors > za->nentry) {
_zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
if ((filelist=(struct zip_filelist *)malloc(sizeof(filelist[0])*(size_t)survivors)) == NULL)
return -1;
/* archive comment is special for torrentzip */
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) {
/* TODO: use internal function when zip_set_archive_comment clears TORRENT flag */
if (zip_set_archive_comment(za, TORRENT_SIG "XXXXXXXX", TORRENT_SIG_LEN + TORRENT_CRC_LEN) < 0) {
free(filelist);
return -1;
}
}
/* TODO: if no longer torrentzip and archive comment not changed by user, delete it */
/* create list of files with index into original archive */
for (i=j=0; i<za->nentry; i++) {
if (za->entry[i].deleted)
continue;
if (j >= survivors) {
free(filelist);
_zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
filelist[j].idx = i;
filelist[j].name = zip_get_name(za, i, 0);
j++;
}
if (j < survivors) {
free(filelist);
_zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
return -1;
}
if ((temp=_zip_create_temp_output(za, &out)) == NULL) {
free(filelist);
return -1;
}
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0))
qsort(filelist, (size_t)survivors, sizeof(filelist[0]),
_zip_torrentzip_cmp);
new_torrentzip = (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 1
&& zip_get_archive_flag(za, ZIP_AFL_TORRENT,
ZIP_FL_UNCHANGED) == 0);
error = 0;
for (j=0; j<survivors; j++) {
int new_data;
struct zip_entry *entry;
struct zip_dirent *de;
i = filelist[j].idx;
entry = za->entry+i;
new_data = (ZIP_ENTRY_DATA_CHANGED(entry) || new_torrentzip || ZIP_ENTRY_CHANGED(entry, ZIP_DIRENT_COMP_METHOD));
/* create new local directory entry */
if (entry->changes == NULL) {
if ((entry->changes=_zip_dirent_clone(entry->orig)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
error = 1;
break;
}
}
de = entry->changes;
if (_zip_read_local_ef(za, i) < 0) {
error = 1;
break;
}
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0))
_zip_dirent_torrent_normalize(entry->changes);
de->offset = (zip_uint64_t)ftello(out); /* TODO: check for errors */
if (new_data) {
struct zip_source *zs;
zs = NULL;
if (!ZIP_ENTRY_DATA_CHANGED(entry)) {
if ((zs=_zip_source_zip_new(za, za, i, ZIP_FL_UNCHANGED, 0, 0, NULL)) == NULL) {
error = 1;
break;
}
}
/* add_data writes dirent */
if (add_data(za, zs ? zs : entry->source, de, out) < 0) {
error = 1;
if (zs)
zip_source_free(zs);
break;
}
if (zs)
zip_source_free(zs);
}
else {
zip_uint64_t offset;
/* when copying data, all sizes are known -> no data descriptor needed */
de->bitflags &= ~ZIP_GPBF_DATA_DESCRIPTOR;
if (_zip_dirent_write(de, out, ZIP_FL_LOCAL, &za->error) < 0) {
error = 1;
break;
}
if ((offset=_zip_file_get_offset(za, i, &za->error)) == 0) {
error = 1;
break;
}
if ((fseeko(za->zp, (off_t)offset, SEEK_SET) < 0)) {
_zip_error_set(&za->error, ZIP_ER_SEEK, errno);
error = 1;
break;
}
if (copy_data(za->zp, de->comp_size, out, &za->error) < 0) {
error = 1;
break;
}
}
}
if (!error) {
if (write_cdir(za, filelist, survivors, out) < 0)
error = 1;
}
free(filelist);
if (error) {
fclose(out);
(void)remove(temp);
free(temp);
return -1;
}
if (fclose(out) != 0) {
_zip_error_set(&za->error, ZIP_ER_CLOSE, errno);
(void)remove(temp);
free(temp);
return -1;
}
if (za->zp) {
fclose(za->zp);
za->zp = NULL;
reopen_on_error = 1;
}
if (_zip_rename(temp, za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_RENAME, errno);
(void)remove(temp);
free(temp);
if (reopen_on_error) {
/* ignore errors, since we're already in an error case */
za->zp = fopen(za->zn, "rb");
}
return -1;
}
#ifndef _WIN32
mask = umask(0);
umask(mask);
chmod(za->zn, 0666&~mask);
#endif
zip_discard(za);
free(temp);
return 0;
}
zip_fopen_index_encrypted(struct zip *za, zip_uint64_t fileno, int flags,
const char *password)
{
struct zip_file *zf;
zip_compression_implementation comp_impl;
zip_encryption_implementation enc_impl;
struct zip_source *src, *s2;
zip_uint64_t start;
struct zip_stat st;
if (fileno >= za->nentry) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((flags & ZIP_FL_UNCHANGED) == 0
&& ZIP_ENTRY_DATA_CHANGED(za->entry+fileno)) {
_zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
return NULL;
}
if (fileno >= za->cdir->nentry) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
if (flags & ZIP_FL_ENCRYPTED)
flags |= ZIP_FL_COMPRESSED;
zip_stat_index(za, fileno, flags, &st);
enc_impl = NULL;
if ((flags & ZIP_FL_ENCRYPTED) == 0) {
if (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 ((start=_zip_file_get_offset(za, fileno)) == 0)
return NULL;
if (st.comp_size == 0) {
if ((src=zip_source_buffer(za, NULL, 0, 0)) == NULL)
return NULL;
}
else {
if ((src=_zip_source_file_or_p(za, NULL, za->zp, start, st.comp_size,
0, &st)) == NULL)
return NULL;
if (enc_impl) {
if ((s2=enc_impl(za, src, ZIP_EM_TRAD_PKWARE, 0,
password)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
return NULL;
}
src = s2;
}
if (comp_impl) {
if ((s2=comp_impl(za, src, za->cdir->entry[fileno].comp_method,
0)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
return NULL;
}
src = s2;
}
if ((flags & ZIP_FL_COMPRESSED) == 0
|| st.comp_method == ZIP_CM_STORE ) {
if ((s2=zip_source_crc(za, src, 1)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
return NULL;
}
src = s2;
}
}
if (zip_source_open(src) < 0) {
_zip_error_set_from_source(&za->error, src);
zip_source_free(src);
return NULL;
}
zf = _zip_file_new(za);
zf->src = src;
return zf;
}
ZIP_EXTERN int
zip_close(struct zip *za)
{
int survivors;
int i, j, error;
char *temp;
FILE *out;
mode_t mask;
struct zip_cdir *cd;
struct zip_dirent de;
struct filelist *filelist;
int reopen_on_error;
int new_torrentzip;
reopen_on_error = 0;
if (za == NULL)
return -1;
if (!_zip_changed(za, &survivors)) {
_zip_free(za);
return 0;
}
/* don't create zip files with no entries */
if (survivors == 0) {
if (za->zn && za->zp) {
if (remove(za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_REMOVE, errno);
return -1;
}
}
_zip_free(za);
return 0;
}
if ((filelist=(struct filelist *)malloc(sizeof(filelist[0])*survivors))
== NULL)
return -1;
if ((cd=_zip_cdir_new(survivors, &za->error)) == NULL) {
free(filelist);
return -1;
}
for (i=0; i<survivors; i++)
_zip_dirent_init(&cd->entry[i]);
/* archive comment is special for torrentzip */
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0)) {
cd->comment = (char*)_zip_memdup((void*)(TORRENT_SIG "XXXXXXXX"),
TORRENT_SIG_LEN + TORRENT_CRC_LEN,
&za->error);
if (cd->comment == NULL) {
_zip_cdir_free(cd);
free(filelist);
return -1;
}
cd->comment_len = TORRENT_SIG_LEN + TORRENT_CRC_LEN;
}
else if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, ZIP_FL_UNCHANGED) == 0) {
if (_zip_cdir_set_comment(cd, za) == -1) {
_zip_cdir_free(cd);
free(filelist);
return -1;
}
}
if ((temp=_zip_create_temp_output(za, &out)) == NULL) {
_zip_cdir_free(cd);
free(filelist);
return -1;
}
/* create list of files with index into original archive */
for (i=j=0; i<za->nentry; i++) {
if (za->entry[i].state == ZIP_ST_DELETED)
continue;
filelist[j].idx = i;
filelist[j].name = zip_get_name(za, i, 0);
j++;
}
survivors = j;
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0))
qsort(filelist, survivors, sizeof(filelist[0]),
_zip_torrentzip_cmp);
new_torrentzip = (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 1
&& zip_get_archive_flag(za, ZIP_AFL_TORRENT,
ZIP_FL_UNCHANGED) == 0);
error = 0;
for (j=0; j<survivors; j++) {
i = filelist[j].idx;
/* create new local directory entry */
if (ZIP_ENTRY_DATA_CHANGED(za->entry+i) || new_torrentzip) {
_zip_dirent_init(&de);
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0))
_zip_dirent_torrent_normalize(&de);
/* use it as central directory entry */
memcpy(cd->entry+j, &de, sizeof(cd->entry[j]));
/* set/update file name */
if (za->entry[i].ch_filename == NULL) {
if (za->entry[i].state == ZIP_ST_ADDED) {
de.filename = strdup("-");
de.filename_len = 1;
cd->entry[j].filename = "-";
cd->entry[j].filename_len = 1;
}
else {
de.filename = strdup(za->cdir->entry[i].filename);
de.filename_len = strlen(de.filename);
cd->entry[j].filename = za->cdir->entry[i].filename;
cd->entry[j].filename_len = de.filename_len;
}
}
}
else {
/* copy existing directory entries */
if (fseeko(za->zp, za->cdir->entry[i].offset, SEEK_SET) != 0) {
_zip_error_set(&za->error, ZIP_ER_SEEK, errno);
error = 1;
break;
}
if (_zip_dirent_read(&de, za->zp, NULL, NULL, 1,
&za->error) != 0) {
error = 1;
break;
}
memcpy(cd->entry+j, za->cdir->entry+i, sizeof(cd->entry[j]));
if (de.bitflags & ZIP_GPBF_DATA_DESCRIPTOR) {
de.crc = za->cdir->entry[i].crc;
de.comp_size = za->cdir->entry[i].comp_size;
de.uncomp_size = za->cdir->entry[i].uncomp_size;
de.bitflags &= ~ZIP_GPBF_DATA_DESCRIPTOR;
cd->entry[j].bitflags &= ~ZIP_GPBF_DATA_DESCRIPTOR;
}
}
if (za->entry[i].ch_filename) {
free(de.filename);
if ((de.filename=strdup(za->entry[i].ch_filename)) == NULL) {
error = 1;
break;
}
de.filename_len = strlen(de.filename);
cd->entry[j].filename = za->entry[i].ch_filename;
cd->entry[j].filename_len = de.filename_len;
}
if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0) == 0
&& za->entry[i].ch_comment_len != -1) {
/* as the rest of cd entries, its malloc/free is done by za */
cd->entry[j].comment = za->entry[i].ch_comment;
cd->entry[j].comment_len = za->entry[i].ch_comment_len;
}
cd->entry[j].offset = (unsigned int)ftello(out);
if (ZIP_ENTRY_DATA_CHANGED(za->entry+i) || new_torrentzip) {
struct zip_source *zs;
zs = NULL;
if (!ZIP_ENTRY_DATA_CHANGED(za->entry+i)) {
if ((zs=zip_source_zip(za, za, i, ZIP_FL_RECOMPRESS, 0, -1))
== NULL) {
error = 1;
break;
}
}
if (add_data(za, zs ? zs : za->entry[i].source, &de, out) < 0) {
error = 1;
break;
}
cd->entry[j].last_mod = de.last_mod;
cd->entry[j].comp_method = de.comp_method;
cd->entry[j].comp_size = de.comp_size;
cd->entry[j].uncomp_size = de.uncomp_size;
cd->entry[j].crc = de.crc;
}
else {
if (_zip_dirent_write(&de, out, 1, &za->error) < 0) {
error = 1;
break;
}
/* we just read the local dirent, file is at correct position */
if (copy_data(za->zp, cd->entry[j].comp_size, out,
&za->error) < 0) {
error = 1;
break;
}
}
_zip_dirent_finalize(&de);
}
free(filelist);
if (!error) {
if (write_cdir(za, cd, out) < 0)
error = 1;
}
/* pointers in cd entries are owned by za */
cd->nentry = 0;
_zip_cdir_free(cd);
if (error) {
_zip_dirent_finalize(&de);
fclose(out);
remove(temp);
free(temp);
return -1;
}
if (fclose(out) != 0) {
_zip_error_set(&za->error, ZIP_ER_CLOSE, errno);
remove(temp);
free(temp);
return -1;
}
if (za->zp) {
fclose(za->zp);
za->zp = NULL;
reopen_on_error = 1;
}
if (_zip_rename(temp, za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_RENAME, errno);
remove(temp);
free(temp);
if (reopen_on_error) {
/* ignore errors, since we're already in an error case */
za->zp = fopen(za->zn, "rb");
}
return -1;
}
#ifndef _MSC_VER
mask = umask(0);
umask(mask);
chmod(za->zn, 0666&~mask);
#endif
_zip_free(za);
free(temp);
return 0;
}
ZIP_EXTERN struct zip_file *
zip_fopen_index(struct zip *za, int fileno, int flags)
{
int len, ret;
int zfflags;
struct zip_file *zf;
if ((fileno < 0) || (fileno >= za->nentry)) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
if ((flags & ZIP_FL_UNCHANGED) == 0
&& ZIP_ENTRY_DATA_CHANGED(za->entry+fileno)) {
_zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
return NULL;
}
if (fileno >= za->cdir->nentry) {
_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
return NULL;
}
zfflags = 0;
switch (za->cdir->entry[fileno].comp_method) {
case ZIP_CM_STORE:
zfflags |= ZIP_ZF_CRC;
break;
case ZIP_CM_DEFLATE:
if ((flags & ZIP_FL_COMPRESSED) == 0)
zfflags |= ZIP_ZF_CRC | ZIP_ZF_DECOMP;
break;
default:
if ((flags & ZIP_FL_COMPRESSED) == 0) {
_zip_error_set(&za->error, ZIP_ER_COMPNOTSUPP, 0);
return NULL;
}
break;
}
zf = _zip_file_new(za);
zf->flags = zfflags;
/* zf->name = za->cdir->entry[fileno].filename; */
zf->method = za->cdir->entry[fileno].comp_method;
zf->bytes_left = za->cdir->entry[fileno].uncomp_size;
zf->cbytes_left = za->cdir->entry[fileno].comp_size;
zf->crc_orig = za->cdir->entry[fileno].crc;
if ((zf->fpos=_zip_file_get_offset(za, fileno)) == 0) {
zip_fclose(zf);
return NULL;
}
if ((zf->flags & ZIP_ZF_DECOMP) == 0)
zf->bytes_left = zf->cbytes_left;
else {
if ((zf->buffer=(char *)malloc(BUFSIZE)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
zip_fclose(zf);
return NULL;
}
len = _zip_file_fillbuf(zf->buffer, BUFSIZE, zf);
if (len <= 0) {
_zip_error_copy(&za->error, &zf->error);
zip_fclose(zf);
return NULL;
}
if ((zf->zstr = (z_stream *)malloc(sizeof(z_stream))) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
zip_fclose(zf);
return NULL;
}
zf->zstr->zalloc = Z_NULL;
zf->zstr->zfree = Z_NULL;
zf->zstr->opaque = NULL;
zf->zstr->next_in = (Bytef *)zf->buffer;
zf->zstr->avail_in = len;
/* negative value to tell zlib that there is no header */
if ((ret=inflateInit2(zf->zstr, -MAX_WBITS)) != Z_OK) {
_zip_error_set(&za->error, ZIP_ER_ZLIB, ret);
zip_fclose(zf);
return NULL;
}
}
return zf;
}
int
zip_close(struct zip *za)
{
int changed, survivors;
int i, j, tfd, error;
char *temp;
FILE *tfp;
mode_t mask;
struct zip_cdir *cd;
struct zip_dirent de;
changed = survivors = 0;
for (i=0; i<za->nentry; i++) {
if (za->entry[i].state != ZIP_ST_UNCHANGED)
changed = 1;
if (za->entry[i].state != ZIP_ST_DELETED)
survivors++;
}
if (!changed) {
_zip_free(za);
return 0;
}
/* don't create zip files with no entries */
if (survivors == 0) {
if (za->zn) {
if (remove(za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_REMOVE, errno);
return -1;
}
}
_zip_free(za);
return 0;
}
if ((cd=_zip_cdir_new(survivors, &za->error)) == NULL)
return -1;
if ((temp=malloc(strlen(za->zn)+8)) == NULL) {
_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
_zip_cdir_free(cd);
return -1;
}
sprintf(temp, "%s.XXXXXX", za->zn);
if ((tfd=mkstemp(temp)) == -1) {
_zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno);
_zip_cdir_free(cd);
free(temp);
return -1;
}
if ((tfp=fdopen(tfd, "r+b")) == NULL) {
_zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno);
_zip_cdir_free(cd);
close(tfd);
remove(temp);
free(temp);
return -1;
}
error = 0;
for (i=j=0; i<za->nentry; i++) {
if (za->entry[i].state == ZIP_ST_DELETED)
continue;
if (ZIP_ENTRY_DATA_CHANGED(za->entry+i)) {
_zip_dirent_init(&de);
memcpy(cd->entry+j, &de, sizeof(cd->entry[i]));
if (za->entry[i].ch_filename == NULL) {
if (za->entry[i].state == ZIP_ST_REPLACED) {
de.filename = strdup(za->cdir->entry[i].filename);
de.filename_len = strlen(de.filename);
cd->entry[j].filename = za->cdir->entry[i].filename;
cd->entry[j].filename_len = de.filename_len;
}
else {
de.filename = strdup("-");
de.filename_len = 1;
cd->entry[j].filename = "-";
cd->entry[j].filename_len = de.filename_len;
}
}
}
else {
if (fseek(za->zp, za->cdir->entry[i].offset, SEEK_SET) != 0) {
_zip_error_set(&za->error, ZIP_ER_SEEK, errno);
error = 1;
break;
}
if (_zip_dirent_read(&de, za->zp, NULL, 0, 1, &za->error) != 0) {
error = 1;
break;
}
memcpy(cd->entry+j, za->cdir->entry+i, sizeof(cd->entry[i]));
}
if (za->entry[i].ch_filename) {
free(de.filename);
de.filename = strdup(za->entry[i].ch_filename);
de.filename_len = strlen(de.filename);
cd->entry[j].filename = za->entry[i].ch_filename;
cd->entry[j].filename_len = de.filename_len;
}
cd->entry[j].offset = ftell(tfp);
if (ZIP_ENTRY_DATA_CHANGED(za->entry+i)) {
if (add_data(za, i, &de, tfp) < 0) {
error = -1;
break;
}
cd->entry[j].last_mod = de.last_mod;
cd->entry[j].comp_method = de.comp_method;
cd->entry[j].comp_size = de.comp_size;
cd->entry[j].uncomp_size = de.uncomp_size;
cd->entry[j].crc = de.crc;
}
else {
if (_zip_dirent_write(&de, tfp, 1, &za->error) < 0) {
error = 1;
break;
}
/* we just read the local dirent, file is at correct position */
if (copy_data(za->zp, de.comp_size, tfp, &za->error) < 0) {
error = 1;
break;
}
}
j++;
_zip_dirent_finalize(&de);
}
if (!error) {
if (_zip_cdir_write(cd, tfp, &za->error) < 0)
error = 1;
}
/* pointers in cd are owned by za */
cd->nentry = 0;
_zip_cdir_free(cd);
if (error) {
_zip_dirent_finalize(&de);
fclose(tfp);
remove(temp);
free(temp);
return -1;
}
if (fclose(tfp) != 0) {
_zip_error_set(&za->error, ZIP_ER_CLOSE, errno);
remove(temp);
free(temp);
return -1;
}
if (rename(temp, za->zn) != 0) {
_zip_error_set(&za->error, ZIP_ER_RENAME, errno);
remove(temp);
free(temp);
return -1;
}
if (za->zp) {
fclose(za->zp);
za->zp = NULL;
}
mask = umask(0);
umask(mask);
chmod(za->zn, 0666&~mask);
_zip_free(za);
return 0;
}
struct zip_source *
_zip_source_zip_new(struct zip *za, struct zip *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;
struct zip_source *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) {
if ((src=zip_source_buffer(za, NULL, 0, 0)) == NULL)
return NULL;
}
else {
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;
/* XXX: check for overflow of st2.size */
if ((src=_zip_source_file_or_p(za, NULL, srcza->zp, offset+start, (zip_int64_t)st2.size, 0, &st2)) == NULL)
return NULL;
}
else {
/* XXX: check for overflow of st.comp_size */
if ((src=_zip_source_file_or_p(za, NULL, srcza->zp, offset, (zip_int64_t)st.comp_size, 0, &st)) == NULL)
return NULL;
}
if (enc_impl) {
if ((s2=enc_impl(za, src, st.encryption_method, 0, password)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
return NULL;
}
src = s2;
}
if (comp_impl) {
if ((s2=comp_impl(za, src, st.comp_method, 0)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
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 */
if ((s2=zip_source_crc(za, src, 1)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) */
return NULL;
}
src = s2;
}
if (start+len > 0 && (comp_impl || enc_impl)) {
if ((s2=zip_source_window(za, src, start, len ? len : st.size-start)) == NULL) {
zip_source_free(src);
/* XXX: set error (how?) (why?) */
return NULL;
}
src = s2;
}
}
return src;
}
