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-rw-r--r--backend/impress/zip.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/backend/impress/zip.c b/backend/impress/zip.c
deleted file mode 100644
index b1f25c8c..00000000
--- a/backend/impress/zip.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/* imposter (OO.org Impress viewer)
-** Copyright (C) 2003-2005 Gurer Ozen
-** This code is free software; you can redistribute it and/or
-** modify it under the terms of GNU General Public License.
-*/
-
-#include <config.h>
-#include "common.h"
-#include "zip.h"
-#include <zlib.h>
-#define _(x) x
-
-typedef unsigned long ulong;
-
-enum {
- ZIP_OK = 0,
- ZIP_NOMEM,
- ZIP_NOSIG,
- ZIP_BADZIP,
- ZIP_NOMULTI,
- ZIP_EOPEN,
- ZIP_EREAD,
- ZIP_NOFILE
-};
-
-struct zipfile {
- struct zipfile *next;
- char *name;
- ulong crc;
- ulong zip_size;
- ulong real_size;
- ulong pos;
-};
-
-struct zip_struct {
- FILE *f;
- struct zipfile *files;
- ulong cd_pos;
- ulong cd_size;
- ulong cd_offset;
- ulong head_size;
- ulong rem_size;
- ulong nr_files;
-};
-
-char *
-zip_error (int err)
-{
- char *ret;
-
- switch (err) {
- case ZIP_OK:
- ret = _("No error");
- break;
- case ZIP_NOMEM:
- ret = _("Not enough memory");
- break;
- case ZIP_NOSIG:
- ret = _("Cannot find ZIP signature");
- break;
- case ZIP_BADZIP:
- ret = _("Invalid ZIP file");
- break;
- case ZIP_NOMULTI:
- ret = _("Multi file ZIPs are not supported");
- break;
- case ZIP_EOPEN:
- ret = _("Cannot open the file");
- break;
- case ZIP_EREAD:
- ret = _("Cannot read data from file");
- break;
- case ZIP_NOFILE:
- ret = _("Cannot find file in the ZIP archive");
- break;
- default:
- ret = _("Unknown error");
- break;
- }
- return ret;
-}
-
-static int
-find_cd (zip *z)
-{
- FILE *f;
- char *buf;
- ulong size, pos, i, flag;
-
- f = z->f;
- if (fseek (f, 0, SEEK_END) != 0) return 1;
- size = ftell (f);
- if (size < 0xffff) pos = 0; else pos = size - 0xffff;
- buf = malloc (size - pos + 1);
- if (!buf) return 1;
- if (fseek (f, pos, SEEK_SET) != 0) {
- free (buf);
- return 1;
- }
- if (fread (buf, size - pos, 1, f) != 1) {
- free (buf);
- return 1;
- }
- flag = 0;
- for (i = size - pos - 3; i > 0; i--) {
- if (buf[i] == 0x50 && buf[i+1] == 0x4b && buf[i+2] == 0x05 && buf[i+3] == 0x06) {
- z->cd_pos = i + pos;
- flag = 1;
- break;
- }
- }
- free (buf);
- if (flag != 1) return 1;
- return 0;
-}
-
-static unsigned long
-get_long (unsigned char *buf)
-{
- return buf[0] + (buf[1] << 8) + (buf[2] << 16) + (buf[3] << 24);
-}
-
-static unsigned long
-get_word (unsigned char *buf)
-{
- return buf[0] + (buf[1] << 8);
-}
-
-static int
-list_files (zip *z)
-{
- unsigned char buf[46];
- struct zipfile *zfile;
- ulong pat, fn_size;
- int nr = 0;
-
- pat = z->cd_offset;
- while (nr < z->nr_files) {
- fseek (z->f, pat + z->head_size, SEEK_SET);
-
- if (fread (buf, 46, 1, z->f) != 1) return ZIP_EREAD;
- if (get_long (buf) != 0x02014b50) return ZIP_BADZIP;
-
- zfile = malloc (sizeof (struct zipfile));
- if (!zfile) return ZIP_NOMEM;
- memset (zfile, 0, sizeof (struct zipfile));
-
- zfile->crc = get_long (buf + 16);
- zfile->zip_size = get_long (buf + 20);
- zfile->real_size = get_long (buf + 24);
- fn_size = get_word (buf + 28);
- zfile->pos = get_long (buf + 42);
-
- zfile->name = malloc (fn_size + 1);
- if (!zfile->name) {
- free (zfile);
- return ZIP_NOMEM;
- }
- fread (zfile->name, fn_size, 1, z->f);
- zfile->name[fn_size] = '\0';
-
- zfile->next = z->files;
- z->files = zfile;
-
- pat += 0x2e + fn_size + get_word (buf + 30) + get_word (buf + 32);
- nr++;
- }
- return ZIP_OK;
-}
-
-zip *
-zip_open (const char *fname, int *err)
-{
- unsigned char buf[22];
- zip *z;
- FILE *f;
-
- f = fopen (fname, "rb");
- if (NULL == f) {
- *err = ZIP_EOPEN;
- return NULL;
- }
-
- z = malloc (sizeof (zip));
- memset (z, 0, sizeof (zip));
- z->f = f;
-
- if (find_cd (z)) {
- zip_close (z);
- *err = ZIP_NOSIG;
- return NULL;
- }
-
- fseek (f, z->cd_pos, SEEK_SET);
- if (fread (buf, 22, 1, f) != 1) {
- zip_close (z);
- *err = ZIP_EREAD;
- return NULL;
- }
- z->nr_files = get_word (buf + 10);
- if (get_word (buf + 8) != z->nr_files) {
- zip_close (z);
- *err = ZIP_NOMULTI;
- return NULL;
- }
- z->cd_size = get_long (buf + 12);
- z->cd_offset = get_long (buf + 16);
- z->rem_size = get_word (buf + 20);
- z->head_size = z->cd_pos - (z->cd_offset + z->cd_size);
-
- *err = list_files (z);
- if (*err != ZIP_OK) {
- zip_close (z);
- return NULL;
- }
-
- *err = ZIP_OK;
- return z;
-}
-
-void
-zip_close (zip *z)
-{
- struct zipfile *zfile, *tmp;
-
- zfile = z->files;
- while (zfile) {
- tmp = zfile->next;
- if (zfile->name) free (zfile->name);
- free (zfile);
- zfile = tmp;
- }
- z->files = NULL;
- if (z->f) fclose (z->f);
- z->f = NULL;
-}
-
-static struct zipfile *
-find_file (zip *z, const char *name)
-{
- struct zipfile *zfile;
-
- zfile = z->files;
- while (zfile) {
- if (strcmp (zfile->name, name) == 0) return zfile;
- zfile = zfile->next;
- }
- return NULL;
-}
-
-static int
-seek_file (zip *z, struct zipfile *zfile)
-{
- unsigned char buf[30];
-
- fseek (z->f, zfile->pos + z->head_size, SEEK_SET);
- if (fread (buf, 30, 1, z->f) != 1) return ZIP_EREAD;
- if (get_long (buf) != 0x04034b50) return ZIP_BADZIP;
- fseek (z->f, get_word (buf + 26) + get_word (buf + 28), SEEK_CUR);
- return ZIP_OK;
-}
-
-iks *
-zip_load_xml (zip *z, const char *name, int *err)
-{
- iksparser *prs;
- char *real_buf;
- iks *x;
- struct zipfile *zfile;
-
- *err = ZIP_OK;
-
- zfile = find_file (z, name);
- if (!zfile) {
- *err = ZIP_NOFILE;
- return NULL;
- }
-
- seek_file (z, zfile);
-
- real_buf = malloc (zfile->real_size + 1);
- if (zfile->zip_size < zfile->real_size) {
- char *zip_buf;
- z_stream zs;
- zs.zalloc = NULL;
- zs.zfree = NULL;
- zs.opaque = NULL;
- zip_buf = malloc (zfile->zip_size);
- fread (zip_buf, zfile->zip_size, 1, z->f);
- zs.next_in = zip_buf;
- zs.avail_in = zfile->zip_size;
- zs.next_out = real_buf;
- zs.avail_out = zfile->real_size;
- inflateInit2 (&zs, -MAX_WBITS);
- inflate (&zs, Z_FINISH);
- inflateEnd (&zs);
- free (zip_buf);
- } else {
- fread (real_buf, zfile->real_size, 1, z->f);
- }
-
- real_buf[zfile->real_size] = '\0';
- prs = iks_dom_new (&x);
- iks_parse (prs, real_buf, zfile->real_size, 1);
- iks_parser_delete (prs);
- free (real_buf);
- return x;
-}
-
-unsigned long zip_get_size (zip *z, const char *name)
-{
- struct zipfile *zf;
-
- zf = find_file (z, name);
- if (!zf) return 0;
- return zf->real_size;
-}
-
-int zip_load (zip *z, const char *name, char *buf)
-{
- struct zipfile *zfile;
-
- zfile = find_file (z, name);
- if (!zfile) return ZIP_NOFILE;
-
- seek_file (z, zfile);
-
- if (zfile->zip_size < zfile->real_size) {
- char *zip_buf;
- z_stream zs;
- zs.zalloc = NULL;
- zs.zfree = NULL;
- zs.opaque = NULL;
- zip_buf = malloc (zfile->zip_size);
- fread (zip_buf, zfile->zip_size, 1, z->f);
- zs.next_in = zip_buf;
- zs.avail_in = zfile->zip_size;
- zs.next_out = buf;
- zs.avail_out = zfile->real_size;
- inflateInit2 (&zs, -MAX_WBITS);
- inflate (&zs, Z_FINISH);
- inflateEnd (&zs);
- free (zip_buf);
- } else {
- fread (buf, zfile->real_size, 1, z->f);
- }
-
- return ZIP_OK;
-}
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