#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.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 struct zip_string *_zip_read_string(const unsigned char **, FILE *, zip_uint16_t, int, struct zip_error *);
static struct zip_string *_zip_dirent_process_ef_utf_8(const struct zip_dirent *, zip_uint16_t, struct zip_string *);
static struct zip_extra_field *_zip_ef_utf8(zip_uint16_t, struct zip_string *, struct zip_error *);
void
_zip_cdir_free(struct zip_cdir *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);
}
int
_zip_cdir_grow(struct zip_cdir *cd, zip_uint64_t nentry, struct zip_error *error)
{
struct zip_entry *entry;
zip_uint64_t i;
if (nentry < cd->nentry_alloc) {
_zip_error_set(error, ZIP_ER_INTERNAL, 0);
return -1;
}
if (nentry == cd->nentry_alloc)
return 0;
if ((entry=((struct zip_entry *)
realloc(cd->entry, sizeof(*(cd->entry))*(size_t)nentry))) == NULL) {
_zip_error_set(error, ZIP_ER_MEMORY, 0);
return -1;
}
for (i=cd->nentry_alloc; i<nentry; i++)
_zip_entry_init(entry+i);
cd->nentry_alloc = nentry;
cd->entry = entry;
return 0;
}
struct zip_cdir *
_zip_cdir_new(zip_uint64_t nentry, struct zip_error *error)
{
struct zip_cdir *cd;
zip_uint64_t i;
if ((cd=(struct zip_cdir *)malloc(sizeof(*cd))) == NULL) {
_zip_error_set(error, ZIP_ER_MEMORY, 0);
return NULL;
}
if (nentry == 0)
cd->entry = NULL;
else if (nentry > ((size_t)-1)/sizeof(*(cd->entry)) || (cd->entry=(struct zip_entry *)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(struct zip *za, const struct zip_filelist *filelist, zip_uint64_t survivors, FILE *fp)
{
off_t off;
zip_uint64_t offset, size;
struct zip_string *comment;
zip_uint64_t i;
int is_zip64;
int ret;
if ((off=ftello(fp)) < 0) {
_zip_error_set(&za->error, ZIP_ER_READ, errno);
return -1;
}
offset = (zip_uint64_t)off;
is_zip64 = 0;
for (i=0; i<survivors; i++) {
struct zip_entry *entry = za->entry+filelist[i].idx;
if ((ret=_zip_dirent_write(entry->changes ? entry->changes : entry->orig, fp, ZIP_FL_CENTRAL, &za->error)) < 0)
return -1;
if (ret)
is_zip64 = 1;
}
if ((off=ftello(fp)) < 0) {
_zip_error_set(&za->error, ZIP_ER_READ, errno);
return -1;
}
size = (zip_uint64_t)off - offset;
if (offset > ZIP_UINT32_MAX || survivors > ZIP_UINT16_MAX)
is_zip64 = 1;
if (is_zip64) {
fwrite(EOCD64_MAGIC, 1, 4, fp);
_zip_write8(EOCD64LEN-12, fp);
_zip_write2(45, fp);
_zip_write2(45, fp);
_zip_write4(0, fp);
_zip_write4(0, fp);
_zip_write8(survivors, fp);
_zip_write8(survivors, fp);
_zip_write8(size, fp);
_zip_write8(offset, fp);
fwrite(EOCD64LOC_MAGIC, 1, 4, fp);
_zip_write4(0, fp);
_zip_write8(offset+size, fp);
_zip_write4(1, fp);
}
fwrite(EOCD_MAGIC, 1, 4, fp);
_zip_write4(0, fp);
_zip_write2(survivors >= ZIP_UINT16_MAX ? ZIP_UINT16_MAX : (zip_uint16_t)survivors, fp);
_zip_write2(survivors >= ZIP_UINT16_MAX ? ZIP_UINT16_MAX : (zip_uint16_t)survivors, fp);
_zip_write4(size >= ZIP_UINT32_MAX ? ZIP_UINT32_MAX : (zip_uint32_t)size, fp);
_zip_write4(offset >= ZIP_UINT32_MAX ? ZIP_UINT32_MAX : (zip_uint32_t)offset, fp);
comment = za->comment_changed ? za->comment_changes : za->comment_orig;
_zip_write2(comment ? comment->length : 0, fp);
if (comment)
fwrite(comment->raw, 1, comment->length, fp);
if (ferror(fp)) {
_zip_error_set(&za->error, ZIP_ER_WRITE, errno);
return -1;
}
return (zip_int64_t)size;
}
struct zip_dirent *
_zip_dirent_clone(const struct zip_dirent *sde)
{
struct zip_dirent *tde;
if ((tde=(struct zip_dirent *)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(struct zip_dirent *zde)
{
if (!zde->cloned || zde->changed & ZIP_DIRENT_FILENAME)
_zip_string_free(zde->filename);
if (!zde->cloned || zde->changed & ZIP_DIRENT_EXTRA_FIELD)
_zip_ef_free(zde->extra_fields);
if (!zde->cloned || zde->changed & ZIP_DIRENT_COMMENT)
_zip_string_free(zde->comment);
}
void
_zip_dirent_free(struct zip_dirent *zde)
{
if (zde == NULL)
return;
_zip_dirent_finalize(zde);
free(zde);
}
void
_zip_dirent_init(struct zip_dirent *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;
}
int
_zip_dirent_needs_zip64(const struct zip_dirent *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 1;
return 0;
}
struct zip_dirent *
_zip_dirent_new(void)
{
struct zip_dirent *de;
if ((de=(struct zip_dirent *)malloc(sizeof(*de))) == NULL)
return NULL;
_zip_dirent_init(de);
return de;
}
int
_zip_dirent_read(struct zip_dirent *zde, FILE *fp,
const unsigned char **bufp, zip_uint64_t *leftp, int local,
struct zip_error *error)
{
unsigned char buf[CDENTRYSIZE];
const unsigned char *cur;
zip_uint16_t dostime, dosdate;
zip_uint32_t size;
zip_uint16_t filename_len, comment_len, ef_len;
if (local)
size = LENTRYSIZE;
else
size = CDENTRYSIZE;
if (leftp && (*leftp < size)) {
_zip_error_set(error, ZIP_ER_NOZIP, 0);
return -1;
}
if (bufp) {
cur = *bufp;
}
else {
if ((fread(buf, 1, size, fp)<size)) {
_zip_error_set(error, ZIP_ER_READ, errno);
return -1;
}
cur = buf;
}
if (memcmp(cur, (local ? LOCAL_MAGIC : CENTRAL_MAGIC), 4) != 0) {
_zip_error_set(error, ZIP_ER_NOZIP, 0);
return -1;
}
cur += 4;
_zip_dirent_init(zde);
if (!local)
zde->version_madeby = _zip_read2(&cur);
else
zde->version_madeby = 0;
zde->version_needed = _zip_read2(&cur);
zde->bitflags = _zip_read2(&cur);
zde->comp_method = _zip_read2(&cur);
dostime = _zip_read2(&cur);
dosdate = _zip_read2(&cur);
zde->last_mod = _zip_d2u_time(dostime, dosdate);
zde->crc = _zip_read4(&cur);
zde->comp_size = _zip_read4(&cur);
zde->uncomp_size = _zip_read4(&cur);
filename_len = _zip_read2(&cur);
ef_len = _zip_read2(&cur);
if (local) {
comment_len = 0;
zde->disk_number = 0;
zde->int_attrib = 0;
zde->ext_attrib = 0;
zde->offset = 0;
} else {
comment_len = _zip_read2(&cur);
zde->disk_number = _zip_read2(&cur);
zde->int_attrib = _zip_read2(&cur);
zde->ext_attrib = _zip_read4(&cur);
zde->offset = _zip_read4(&cur);
}
zde->filename = NULL;
zde->extra_fields = NULL;
zde->comment = NULL;
size += filename_len+ef_len+comment_len;
if (leftp && (*leftp < size)) {
_zip_error_set(error, ZIP_ER_INCONS, 0);
return -1;
}
if (filename_len) {
zde->filename = _zip_read_string(bufp ? &cur : NULL, fp, filename_len, 1, error);
if (!zde->filename)
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);
return -1;
}
}
}
if (ef_len) {
zip_uint8_t *ef = _zip_read_data(bufp ? &cur : NULL, fp, ef_len, 0, error);
if (ef == NULL)
return -1;
if ((zde->extra_fields=_zip_ef_parse(ef, ef_len, local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL, error)) == NULL) {
free(ef);
return -1;
}
free(ef);
if (local)
zde->local_extra_fields_read = 1;
}
if (comment_len) {
zde->comment = _zip_read_string(bufp ? &cur : NULL, fp, comment_len, 0, error);
if (!zde->comment)
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);
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, needed_len;
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)
return -1;
if (local)
needed_len = 16;
else
needed_len = ((zde->uncomp_size == ZIP_UINT32_MAX) + (zde->comp_size == ZIP_UINT32_MAX) + (zde->offset == ZIP_UINT32_MAX)) * 8
+ (zde->disk_number == ZIP_UINT16_MAX) * 4;
if (got_len != needed_len) {
_zip_error_set(error, ZIP_ER_INCONS, 0);
return -1;
}
if (zde->uncomp_size == ZIP_UINT32_MAX)
zde->uncomp_size = _zip_read8(&ef);
else if (local)
ef += 8;
if (zde->comp_size == ZIP_UINT32_MAX)
zde->comp_size = _zip_read8(&ef);
if (!local) {
if (zde->offset == ZIP_UINT32_MAX)
zde->offset = _zip_read8(&ef);
if (zde->disk_number == ZIP_UINT16_MAX)
zde->disk_number = _zip_read4(&ef);
}
}
if (!local) {
if (zde->offset > ZIP_OFF_MAX) {
_zip_error_set(error, ZIP_ER_SEEK, EFBIG);
return -1;
}
}
zde->extra_fields = _zip_ef_remove_internal(zde->extra_fields);
if (bufp)
*bufp = cur;
if (leftp)
*leftp -= size;
return 0;
}
static struct zip_string *
_zip_dirent_process_ef_utf_8(const struct zip_dirent *de, zip_uint16_t id, struct zip_string *str)
{
zip_uint16_t ef_len;
zip_uint32_t ef_crc;
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;
ef++;
ef_crc = _zip_read4(&ef);
if (_zip_string_crc32(str) == ef_crc) {
struct zip_string *ef_str = _zip_string_new(ef, ef_len-5, ZIP_ENCODING_UTF8_KNOWN, NULL);
if (ef_str != NULL) {
_zip_string_free(str);
str = ef_str;
}
}
return str;
}
zip_int32_t
_zip_dirent_size(FILE *f, zip_uint16_t flags, struct zip_error *error)
{
zip_int32_t size;
int local = (flags & ZIP_EF_LOCAL);
int i;
unsigned char b[6];
const unsigned char *p;
size = local ? LENTRYSIZE : CDENTRYSIZE;
if (fseek(f, local ? 26 : 28, SEEK_CUR) < 0) {
_zip_error_set(error, ZIP_ER_SEEK, errno);
return -1;
}
if (fread(b, (local ? 4 : 6), 1, f) != 1) {
_zip_error_set(error, ZIP_ER_READ, errno);
return -1;
}
p = b;
for (i=0; i<(local ? 2 : 3); i++) {
size += _zip_read2(&p);
}
return size;
}
void
_zip_dirent_torrent_normalize(struct zip_dirent *de)
{
static struct tm torrenttime;
static time_t last_mod = 0;
if (last_mod == 0) {
#ifdef HAVE_STRUCT_TM_TM_ZONE
time_t now;
struct tm *l;
#endif
torrenttime.tm_sec = 0;
torrenttime.tm_min = 32;
torrenttime.tm_hour = 23;
torrenttime.tm_mday = 24;
torrenttime.tm_mon = 11;
torrenttime.tm_year = 96;
torrenttime.tm_wday = 0;
torrenttime.tm_yday = 0;
torrenttime.tm_isdst = 0;
#ifdef HAVE_STRUCT_TM_TM_ZONE
time(&now);
l = localtime(&now);
torrenttime.tm_gmtoff = l->tm_gmtoff;
torrenttime.tm_zone = l->tm_zone;
#endif
last_mod = mktime(&torrenttime);
}
de->version_madeby = 0;
de->version_needed = 20;
de->bitflags = 2;
de->comp_method = ZIP_CM_DEFLATE;
de->last_mod = last_mod;
de->disk_number = 0;
de->int_attrib = 0;
de->ext_attrib = 0;
_zip_ef_free(de->extra_fields);
de->extra_fields = NULL;
_zip_string_free(de->comment);
de->comment = NULL;
}
int
_zip_dirent_write(struct zip_dirent *de, FILE *fp, zip_flags_t flags, struct zip_error *error)
{
unsigned short dostime, dosdate;
enum zip_encoding_type com_enc, name_enc;
struct zip_extra_field *ef;
zip_uint8_t ef_zip64[24], *ef_zip64_p;
int is_zip64;
int is_really_zip64;
ef = NULL;
is_zip64 = 0;
fwrite((flags & ZIP_FL_LOCAL) ? LOCAL_MAGIC : CENTRAL_MAGIC, 1, 4, fp);
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_GPBF_ENCODING_UTF_8;
if (name_enc == ZIP_ENCODING_UTF8_KNOWN) {
ef = _zip_ef_utf8(ZIP_EF_UTF_8_NAME, de->filename, error);
if (ef == NULL)
return -1;
}
if ((flags & ZIP_FL_LOCAL) == 0 && com_enc == ZIP_ENCODING_UTF8_KNOWN){
struct zip_extra_field *ef2 = _zip_ef_utf8(ZIP_EF_UTF_8_COMMENT, de->comment, error);
if (ef2 == NULL) {
_zip_ef_free(ef);
return -1;
}
ef2->next = ef;
ef = ef2;
}
}
ef_zip64_p = ef_zip64;
if (flags & ZIP_FL_LOCAL) {
if ((flags & ZIP_FL_FORCE_ZIP64) || de->comp_size > ZIP_UINT32_MAX || de->uncomp_size > ZIP_UINT32_MAX) {
_zip_poke8(de->uncomp_size, &ef_zip64_p);
_zip_poke8(de->comp_size, &ef_zip64_p);
}
}
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->comp_size >= ZIP_UINT32_MAX)
_zip_poke8(de->comp_size, &ef_zip64_p);
if (de->uncomp_size >= ZIP_UINT32_MAX)
_zip_poke8(de->uncomp_size, &ef_zip64_p);
if (de->offset >= ZIP_UINT32_MAX)
_zip_poke8(de->offset, &ef_zip64_p);
}
}
if (ef_zip64_p != ef_zip64) {
struct zip_extra_field *ef64 = _zip_ef_new(ZIP_EF_ZIP64, (zip_uint16_t)(ef_zip64_p-ef_zip64), ef_zip64, ZIP_EF_BOTH);
ef64->next = ef;
ef = ef64;
is_zip64 = 1;
}
if ((flags & (ZIP_FL_LOCAL|ZIP_FL_FORCE_ZIP64)) == (ZIP_FL_LOCAL|ZIP_FL_FORCE_ZIP64))
is_really_zip64 = _zip_dirent_needs_zip64(de, flags);
else
is_really_zip64 = is_zip64;
if ((flags & ZIP_FL_LOCAL) == 0)
_zip_write2(is_really_zip64 ? 45 : de->version_madeby, fp);
_zip_write2(is_really_zip64 ? 45 : de->version_needed, fp);
_zip_write2(de->bitflags&0xfff9, fp);
_zip_write2((zip_uint16_t)de->comp_method, fp);
_zip_u2d_time(de->last_mod, &dostime, &dosdate);
_zip_write2(dostime, fp);
_zip_write2(dosdate, fp);
_zip_write4(de->crc, fp);
if (de->comp_size < ZIP_UINT32_MAX)
_zip_write4((zip_uint32_t)de->comp_size, fp);
else
_zip_write4(ZIP_UINT32_MAX, fp);
if (de->uncomp_size < ZIP_UINT32_MAX)
_zip_write4((zip_uint32_t)de->uncomp_size, fp);
else
_zip_write4(ZIP_UINT32_MAX, fp);
_zip_write2(_zip_string_length(de->filename), fp);
_zip_write2(_zip_ef_size(de->extra_fields, flags) + _zip_ef_size(ef, ZIP_EF_BOTH), fp);
if ((flags & ZIP_FL_LOCAL) == 0) {
_zip_write2(_zip_string_length(de->comment), fp);
_zip_write2((zip_uint16_t)de->disk_number, fp);
_zip_write2(de->int_attrib, fp);
_zip_write4(de->ext_attrib, fp);
if (de->offset < ZIP_UINT32_MAX)
_zip_write4((zip_uint32_t)de->offset, fp);
else
_zip_write4(ZIP_UINT32_MAX, fp);
}
if (de->filename)
_zip_string_write(de->filename, fp);
if (ef)
_zip_ef_write(ef, ZIP_EF_BOTH, fp);
if (de->extra_fields)
_zip_ef_write(de->extra_fields, flags, fp);
if ((flags & ZIP_FL_LOCAL) == 0) {
if (de->comment)
_zip_string_write(de->comment, fp);
}
_zip_ef_free(ef);
if (ferror(fp)) {
_zip_error_set(error, ZIP_ER_WRITE, errno);
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 struct zip_extra_field *
_zip_ef_utf8(zip_uint16_t id, struct zip_string *str, struct zip_error *error)
{
const zip_uint8_t *raw;
zip_uint8_t *data, *p;
zip_uint32_t len;
struct zip_extra_field *ef;
raw = _zip_string_get(str, &len, ZIP_FL_ENC_RAW, NULL);
if (len+5 > ZIP_UINT16_MAX) {
}
if ((data=(zip_uint8_t *)malloc(len+5)) == NULL) {
_zip_error_set(error, ZIP_ER_MEMORY, 0);
return NULL;
}
p = data;
*(p++) = 1;
_zip_poke4(_zip_string_crc32(str), &p);
memcpy(p, raw, len);
p += len;
ef = _zip_ef_new(id, (zip_uint16_t)(p-data), data, ZIP_EF_BOTH);
free(data);
return ef;
}
struct zip_dirent *
_zip_get_dirent(struct zip *za, zip_uint64_t idx, zip_flags_t flags, struct zip_error *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;
}
zip_uint16_t
_zip_read2(const zip_uint8_t **a)
{
zip_uint16_t ret;
ret = (zip_uint16_t)((*a)[0]+((*a)[1]<<8));
*a += 2;
return ret;
}
zip_uint32_t
_zip_read4(const zip_uint8_t **a)
{
zip_uint32_t ret;
ret = ((((((zip_uint32_t)(*a)[3]<<8)+(*a)[2])<<8)+(*a)[1])<<8)+(*a)[0];
*a += 4;
return ret;
}
zip_uint64_t
_zip_read8(const zip_uint8_t **a)
{
zip_uint64_t x, y;
x = ((((((zip_uint64_t)(*a)[3]<<8)+(*a)[2])<<8)+(*a)[1])<<8)+(*a)[0];
*a += 4;
y = ((((((zip_uint64_t)(*a)[3]<<8)+(*a)[2])<<8)+(*a)[1])<<8)+(*a)[0];
*a += 4;
return x+(y<<32);
}
zip_uint8_t *
_zip_read_data(const zip_uint8_t **buf, FILE *fp, size_t len, int nulp, struct zip_error *error)
{
zip_uint8_t *r;
if (len == 0 && nulp == 0)
return NULL;
r = (zip_uint8_t *)malloc(nulp ? len+1 : len);
if (!r) {
_zip_error_set(error, ZIP_ER_MEMORY, 0);
return NULL;
}
if (buf) {
memcpy(r, *buf, len);
*buf += len;
}
else {
if (fread(r, 1, len, fp)<len) {
free(r);
if (ferror(fp))
_zip_error_set(error, ZIP_ER_READ, errno);
else
_zip_error_set(error, ZIP_ER_INCONS, 0);
return NULL;
}
}
if (nulp) {
zip_uint8_t *o;
r[len] = 0;
for (o=r; o<r+len; o++)
if (*o == '\0')
*o = ' ';
}
return r;
}
static struct zip_string *
_zip_read_string(const zip_uint8_t **buf, FILE *fp, zip_uint16_t len, int nulp, struct zip_error *error)
{
zip_uint8_t *raw;
struct zip_string *s;
if ((raw=_zip_read_data(buf, fp, len, nulp, error)) == NULL)
return NULL;
s = _zip_string_new(raw, len, ZIP_FL_ENC_GUESS, error);
free(raw);
return s;
}
void
_zip_poke4(zip_uint32_t i, zip_uint8_t **p)
{
*((*p)++) = i&0xff;
*((*p)++) = (i>>8)&0xff;
*((*p)++) = (i>>16)&0xff;
*((*p)++) = (i>>24)&0xff;
}
void
_zip_poke8(zip_uint64_t i, zip_uint8_t **p)
{
*((*p)++) = i&0xff;
*((*p)++) = (i>>8)&0xff;
*((*p)++) = (i>>16)&0xff;
*((*p)++) = (i>>24)&0xff;
*((*p)++) = (i>>32)&0xff;
*((*p)++) = (i>>40)&0xff;
*((*p)++) = (i>>48)&0xff;
*((*p)++) = (i>>56)&0xff;
}
void
_zip_write2(zip_uint16_t i, FILE *fp)
{
putc(i&0xff, fp);
putc((i>>8)&0xff, fp);
return;
}
void
_zip_write4(zip_uint32_t i, FILE *fp)
{
putc(i&0xff, fp);
putc((i>>8)&0xff, fp);
putc((i>>16)&0xff, fp);
putc((i>>24)&0xff, fp);
return;
}
void
_zip_write8(zip_uint64_t i, FILE *fp)
{
putc(i&0xff, fp);
putc((i>>8)&0xff, fp);
putc((i>>16)&0xff, fp);
putc((i>>24)&0xff, fp);
putc((i>>32)&0xff, fp);
putc((i>>40)&0xff, fp);
putc((i>>48)&0xff, fp);
putc((i>>56)&0xff, fp);
return;
}
void
_zip_u2d_time(time_t time, zip_uint16_t *dtime, zip_uint16_t *ddate)
{
struct tm *tm;
tm = localtime(&time);
*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;
}