- missing file

ext/zip/lib/zip_close.c

@@ -0,0 +1,556 @@
+/*
+  $NiH: zip_close.c,v 1.60 2006/05/09 17:21:47 wiz Exp $
+
+  zip_close.c -- close zip archive and update changes
+  Copyright (C) 1999, 2004, 2005 Dieter Baron and Thomas Klausner
+
+  This file is part of libzip, a library to manipulate ZIP archives.
+  The authors can be contacted at <nih@giga.or.at>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+  3. The names of the authors may not be used to endorse or promote
+     products derived from this software without specific prior
+     written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#ifndef _MSC_VER
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "zip.h"
+#include "zipint.h"
+
+static int add_data(struct zip *, int, struct zip_dirent *, FILE *);
+static int add_data_comp(zip_source_callback, void *, struct zip_stat *,
+			 FILE *, struct zip_error *);
+static int add_data_uncomp(zip_source_callback, void *, struct zip_stat *,
+			   FILE *, struct zip_error *);
+static void ch_set_error(struct zip_error *, zip_source_callback, void *);
+static int copy_data(FILE *, off_t, FILE *, struct zip_error *);
+static int _zip_cdir_set_comment(struct zip_cdir *, struct zip *);
+static int _zip_changed(struct zip *, int *);
+static char *_zip_create_temp_output(struct zip *, FILE **);
+
+
+
+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;
+		int rename_error = 0;
+
+    if (!_zip_changed(za, &survivors)) {
+	_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;
+
+    for (i=0; i<survivors; i++)
+	_zip_dirent_init(&cd->entry[i]);
+
+    if (_zip_cdir_set_comment(cd, za) == -1) {
+	_zip_cdir_free(cd);
+	return -1;
+    }
+
+    if ((temp=_zip_create_temp_output(za, &out)) == NULL) {
+	_zip_cdir_free(cd);
+	return -1;
+    }
+
+    error = 0;
+    for (i=j=0; i<za->nentry; i++) {
+	if (za->entry[i].state == ZIP_ST_DELETED)
+	    continue;
+
+	/* create new local directory entry */
+	if (ZIP_ENTRY_DATA_CHANGED(za->entry+i)) {
+	    _zip_dirent_init(&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_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 {
+	    /* copy existing directory entries */
+	    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;
+	    }
+
+		if (de.bitflags & ZIP_GPBF_USE_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;
+		}
+	    memcpy(cd->entry+j, za->cdir->entry+i, sizeof(cd->entry[j]));
+	}
+
+	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 (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 = ftell(out);
+
+	if (ZIP_ENTRY_DATA_CHANGED(za->entry+i)) {
+	    if (add_data(za, i, &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, de.comp_size, out, &za->error) < 0) {
+		error = 1;
+		break;
+	    }
+	}
+
+	j++;
+
+	_zip_dirent_finalize(&de);
+    }
+
+    if (!error) {
+	if (_zip_cdir_write(cd, out, &za->error) < 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;
+    }
+
+#ifdef PHP_WIN32 
+	if (!MoveFileEx(temp, za->zn, MOVEFILE_REPLACE_EXISTING)) {
+		rename_error = -1;
+	}
+#else
+	if (rename(temp, za->zn) != 0) {
+		rename_error = -1;
+	}
+#endif
+
+	if (rename_error < 0) {
+		_zip_error_set(&za->error, ZIP_ER_RENAME, errno);
+		remove(temp);
+		free(temp);
+		return -1;
+	}
+
+    mask = umask(0);
+    umask(mask);
+    chmod(za->zn, 0666&~mask);
+
+    _zip_free(za);
+
+    return 0;
+}
+
+
+
+static int
+add_data(struct zip *za, int idx, struct zip_dirent *de, FILE *ft)
+{
+    off_t offstart, offend;
+    zip_source_callback cb;
+    void *ud;
+    struct zip_stat st;
+
+    cb = za->entry[idx].source->f;
+    ud = za->entry[idx].source->ud;
+
+    if (cb(ud, &st, sizeof(st), ZIP_SOURCE_STAT) < (ssize_t)sizeof(st)) {
+	ch_set_error(&za->error, cb, ud);
+	return -1;
+    }
+
+    if (cb(ud, NULL, 0, ZIP_SOURCE_OPEN) < 0) {
+	ch_set_error(&za->error, cb, ud);
+	return -1;
+    }
+
+    offstart = ftell(ft);
+
+    if (_zip_dirent_write(de, ft, 1, &za->error) < 0)
+	return -1;
+
+    if (st.comp_method != ZIP_CM_STORE) {
+	if (add_data_comp(cb, ud, &st, ft, &za->error) < 0)
+	    return -1;
+    }
+    else {
+	if (add_data_uncomp(cb, ud, &st, ft, &za->error) < 0)
+	    return -1;
+    }
+
+    if (cb(ud, NULL, 0, ZIP_SOURCE_CLOSE) < 0) {
+	ch_set_error(&za->error, cb, ud);
+	return -1;
+    }
+
+    offend = ftell(ft);
+
+    if (fseek(ft, offstart, SEEK_SET) < 0) {
+	_zip_error_set(&za->error, ZIP_ER_SEEK, errno);
+	return -1;
+    }
+
+    de->comp_method = st.comp_method;
+    de->last_mod = st.mtime;
+    de->crc = st.crc;
+    de->uncomp_size = st.size;
+    de->comp_size = st.comp_size;
+
+    if (_zip_dirent_write(de, ft, 1, &za->error) < 0)
+	return -1;
+
+    if (fseek(ft, offend, SEEK_SET) < 0) {
+	_zip_error_set(&za->error, ZIP_ER_SEEK, errno);
+	return -1;
+    }
+
+    return 0;
+}
+
+
+
+static int
+add_data_comp(zip_source_callback cb, void *ud, struct zip_stat *st,FILE *ft,
+	      struct zip_error *error)
+{
+    char buf[BUFSIZE];
+    ssize_t n;
+
+    st->comp_size = 0;
+    while ((n=cb(ud, buf, sizeof(buf), ZIP_SOURCE_READ)) > 0) {
+	if (fwrite(buf, 1, n, ft) != (size_t)n) {
+	    _zip_error_set(error, ZIP_ER_WRITE, errno);
+	    return -1;
+	}
+
+	st->comp_size += n;
+    }
+    if (n < 0) {
+	ch_set_error(error, cb, ud);
+	return -1;
+    }
+
+    return 0;
+}
+
+
+
+static int
+add_data_uncomp(zip_source_callback cb, void *ud, struct zip_stat *st,
+		FILE *ft, struct zip_error *error)
+{
+    char b1[BUFSIZE], b2[BUFSIZE];
+    int end, flush, ret;
+    ssize_t n;
+    size_t n2;
+    z_stream zstr;
+
+    st->comp_method = ZIP_CM_DEFLATE;
+    st->comp_size = st->size = 0;
+    st->crc = crc32(0, NULL, 0);
+
+    zstr.zalloc = Z_NULL;
+    zstr.zfree = Z_NULL;
+    zstr.opaque = NULL;
+    zstr.avail_in = 0;
+    zstr.avail_out = 0;
+
+    /* -15: undocumented feature of zlib to _not_ write a zlib header */
+    deflateInit2(&zstr, Z_BEST_COMPRESSION, Z_DEFLATED, -15, 9,
+		 Z_DEFAULT_STRATEGY);
+
+    zstr.next_out = (Bytef *)b2;
+    zstr.avail_out = sizeof(b2);
+    zstr.avail_in = 0;
+
+    flush = 0;
+    end = 0;
+    while (!end) {
+	if (zstr.avail_in == 0 && !flush) {
+	    if ((n=cb(ud, b1, sizeof(b1), ZIP_SOURCE_READ)) < 0) {
+		ch_set_error(error, cb, ud);
+		deflateEnd(&zstr);
+		return -1;
+	    }
+	    if (n > 0) {
+		zstr.avail_in = n;
+		zstr.next_in = (Bytef *)b1;
+		st->size += n;
+		st->crc = crc32(st->crc, (Bytef *)b1, n);
+	    }
+	    else
+		flush = Z_FINISH;
+	}
+
+	ret = deflate(&zstr, flush);
+	if (ret != Z_OK && ret != Z_STREAM_END) {
+	    _zip_error_set(error, ZIP_ER_ZLIB, ret);
+	    return -1;
+	}
+
+	if (zstr.avail_out != sizeof(b2)) {
+	    n2 = sizeof(b2) - zstr.avail_out;
+
+	    if (fwrite(b2, 1, n2, ft) != n2) {
+		_zip_error_set(error, ZIP_ER_WRITE, errno);
+		return -1;
+	    }
+
+	    zstr.next_out = (Bytef *)b2;
+	    zstr.avail_out = sizeof(b2);
+	    st->comp_size += n2;
+	}
+
+	if (ret == Z_STREAM_END) {
+	    deflateEnd(&zstr);
+	    end = 1;
+	}
+    }
+
+    return 0;
+}
+
+
+
+static void
+ch_set_error(struct zip_error *error, zip_source_callback cb, void *ud)
+{
+    int e[2];
+
+    if ((cb(ud, e, sizeof(e), ZIP_SOURCE_ERROR)) < (ssize_t)sizeof(e)) {
+	error->zip_err = ZIP_ER_INTERNAL;
+	error->sys_err = 0;
+    }
+    else {
+	error->zip_err = e[0];
+	error->sys_err = e[1];
+    }
+}
+
+
+
+static int
+copy_data(FILE *fs, off_t len, FILE *ft, struct zip_error *error)
+{
+    char buf[BUFSIZE];
+    int n, nn;
+
+    if (len == 0)
+	return 0;
+
+    while (len > 0) {
+	nn = len > sizeof(buf) ? sizeof(buf) : len;
+	if ((n=fread(buf, 1, nn, fs)) < 0) {
+	    _zip_error_set(error, ZIP_ER_READ, errno);
+	    return -1;
+	}
+	else if (n == 0) {
+	    _zip_error_set(error, ZIP_ER_EOF, 0);
+	    return -1;
+	}
+
+	if (fwrite(buf, 1, n, ft) != (size_t)n) {
+	    _zip_error_set(error, ZIP_ER_WRITE, errno);
+	    return -1;
+	}
+
+	len -= n;
+    }
+
+    return 0;
+}
+
+
+
+static int
+_zip_cdir_set_comment(struct zip_cdir *dest, struct zip *src)
+{
+    if (src->ch_comment_len != -1) {
+	dest->comment = _zip_memdup(src->ch_comment,
+				    src->ch_comment_len, &src->error);
+	if (dest->comment == NULL)
+	    return -1;
+	dest->comment_len = src->ch_comment_len;
+    } else {
+	if (src->cdir && src->cdir->comment) {
+	    dest->comment = _zip_memdup(src->cdir->comment,
+					src->cdir->comment_len, &src->error);
+	    if (dest->comment == NULL)
+		return -1;
+	    dest->comment_len = src->cdir->comment_len;
+	}
+    }
+
+    return 0;
+}
+
+
+
+static int
+_zip_changed(struct zip *za, int *survivorsp)
+{
+    int changed, i, survivors;
+
+    changed = survivors = 0;
+
+    if (za->ch_comment_len != -1)
+	changed = 1;
+
+    for (i=0; i<za->nentry; i++) {
+	if ((za->entry[i].state != ZIP_ST_UNCHANGED)
+	    || (za->entry[i].ch_comment_len != -1))
+	    changed = 1;
+	if (za->entry[i].state != ZIP_ST_DELETED)
+	    survivors++;
+    }
+
+    *survivorsp = survivors;
+
+    return changed;
+}
+
+
+
+static char *
+_zip_create_temp_output(struct zip *za, FILE **outp)
+{
+    char *temp;
+    int tfd;
+    FILE *tfp;
+
+    if ((temp=(char *)malloc(strlen(za->zn)+8)) == NULL) {
+	_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+	return NULL;
+    }
+
+    sprintf(temp, "%s.XXXXXX", za->zn);
+
+    if ((tfd=mkstemp(temp)) == -1) {
+	_zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno);
+	free(temp);
+	return NULL;
+    }
+
+    if ((tfp=fdopen(tfd, "r+b")) == NULL) {
+	_zip_error_set(&za->error, ZIP_ER_TMPOPEN, errno);
+	close(tfd);
+	remove(temp);
+	free(temp);
+	return NULL;
+    }
+
+    *outp = tfp;
+    return temp;
+}