src/zipmerge.c - third_party/libzip - Git at Google

 /*
   zipmerge.c -- merge zip archives
   Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner

   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.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 <ctype.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

 #include "config.h"

 #ifndef HAVE_GETOPT
 #include "getopt.h"
 #endif

 #include "zip.h"

 char *progname;

 #define PROGRAM "zipmerge"

 #define USAGE "usage: %s [-DhIiSsV] target-zip zip...\n"

 char help_head[] = PROGRAM " (" PACKAGE ") by Dieter Baron and Thomas Klausner\n\n";

 char help[] = "\n\
   -h       display this help message\n\
   -V       display version number\n\
   -D       ignore directory component in file names\n\
   -I       ignore case in file names\n\
   -i       ask before overwriting files\n\
   -S       don't overwrite identical files\n\
   -s       overwrite identical files without asking\n\
 \n\
 Report bugs to <libzip@nih.at>.\n";

 char version_string[] = PROGRAM " (" PACKAGE " " VERSION ")\n\
 Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner\n\
 " PACKAGE " comes with ABSOLUTELY NO WARRANTY, to the extent permitted by law.\n";

 #define OPTIONS "hVDiIsS"

 #define CONFIRM_ALL_YES 0x001
 #define CONFIRM_ALL_NO 0x002
 #define CONFIRM_SAME_YES 0x010
 #define CONFIRM_SAME_NO 0x020

 int confirm;
 zip_flags_t name_flags;

 static int confirm_replace(zip_t *, const char *, zip_uint64_t, zip_t *, const char *, zip_uint64_t);
 static zip_t *merge_zip(zip_t *, const char *, const char *);


 int
 main(int argc, char *argv[]) {
     zip_t *za;
     zip_t **zs;
     int c, err;
     unsigned int i, n;
     char *tname;

     progname = argv[0];

     confirm = CONFIRM_ALL_YES;
     name_flags = 0;

     while ((c = getopt(argc, argv, OPTIONS)) != -1) {
         switch (c) {
         case 'D':
             name_flags |= ZIP_FL_NODIR;
             break;
         case 'i':
             confirm &= ~CONFIRM_ALL_YES;
             break;
         case 'I':
             name_flags |= ZIP_FL_NOCASE;
             break;
         case 's':
             confirm &= ~CONFIRM_SAME_NO;
             confirm |= CONFIRM_SAME_YES;
             break;
         case 'S':
             confirm &= ~CONFIRM_SAME_YES;
             confirm |= CONFIRM_SAME_NO;
             break;

         case 'h':
             fputs(help_head, stdout);
             printf(USAGE, progname);
             fputs(help, stdout);
             exit(0);
         case 'V':
             fputs(version_string, stdout);
             exit(0);

         default:
             fprintf(stderr, USAGE, progname);
             exit(2);
         }
     }

     if (argc < optind + 2) {
         fprintf(stderr, USAGE, progname);
         exit(2);
     }

     tname = argv[optind++];
     argv += optind;

     n = (unsigned int)(argc - optind);
     if ((zs = (zip_t **)malloc(sizeof(zs[0]) * n)) == NULL) {
         fprintf(stderr, "%s: out of memory\n", progname);
         exit(1);
     }

     if ((za = zip_open(tname, ZIP_CREATE, &err)) == NULL) {
         zip_error_t error;
         zip_error_init_with_code(&error, err);
         fprintf(stderr, "%s: can't open zip archive '%s': %s\n", progname, tname, zip_error_strerror(&error));
         zip_error_fini(&error);
         exit(1);
     }

     for (i = 0; i < n; i++) {
         if ((zs[i] = merge_zip(za, tname, argv[i])) == NULL)
             exit(1);
     }

     if (zip_close(za) < 0) {
         fprintf(stderr, "%s: cannot write zip archive '%s': %s\n", progname, tname, zip_strerror(za));
         exit(1);
     }

     for (i = 0; i < n; i++)
         zip_close(zs[i]);

     exit(0);
 }


 static int
 confirm_replace(zip_t *za, const char *tname, zip_uint64_t it, zip_t *zs, const char *sname, zip_uint64_t is) {
     char line[1024];
     struct zip_stat st, ss;

     if (confirm & CONFIRM_ALL_YES)
         return 1;
     else if (confirm & CONFIRM_ALL_NO)
         return 0;

     if (zip_stat_index(za, it, ZIP_FL_UNCHANGED, &st) < 0) {
         fprintf(stderr, "%s: cannot stat file %" PRIu64 " in '%s': %s\n", progname, it, tname, zip_strerror(za));
         return -1;
     }
     if (zip_stat_index(zs, is, 0, &ss) < 0) {
         fprintf(stderr, "%s: cannot stat file %" PRIu64 " in '%s': %s\n", progname, is, sname, zip_strerror(zs));
         return -1;
     }

     if (st.size == ss.size && st.crc == ss.crc) {
         if (confirm & CONFIRM_SAME_YES)
             return 1;
         else if (confirm & CONFIRM_SAME_NO)
             return 0;
     }

     printf("replace '%s' (%" PRIu64 " / %08x) in `%s'\n"
            "   with '%s' (%" PRIu64 " / %08x) from `%s'? ",
            st.name, st.size, st.crc, tname, ss.name, ss.size, ss.crc, sname);
     fflush(stdout);

     if (fgets(line, sizeof(line), stdin) == NULL) {
         fprintf(stderr, "%s: read error from stdin: %s\n", progname, strerror(errno));
         return -1;
     }

     if (tolower((unsigned char)line[0]) == 'y')
         return 1;

     return 0;
 }


 static zip_t *
 merge_zip(zip_t *za, const char *tname, const char *sname) {
     zip_t *zs;
     zip_source_t *source;
     zip_int64_t ret, idx;
     zip_uint64_t i;
     int err;
     const char *fname;

     if ((zs = zip_open(sname, 0, &err)) == NULL) {
         zip_error_t error;
         zip_error_init_with_code(&error, err);
         fprintf(stderr, "%s: can't open zip archive '%s': %s\n", progname, sname, zip_error_strerror(&error));
         zip_error_fini(&error);
         return NULL;
     }

     ret = zip_get_num_entries(zs, 0);
     if (ret < 0) {
         fprintf(stderr, "%s: cannot get number of entries for '%s': %s\n", progname, sname, zip_strerror(za));
         return NULL;
     }
     for (i = 0; i < (zip_uint64_t)ret; i++) {
         fname = zip_get_name(zs, i, 0);

         if ((idx = zip_name_locate(za, fname, name_flags)) >= 0) {
             switch (confirm_replace(za, tname, (zip_uint64_t)idx, zs, sname, i)) {
             case 0:
                 break;

             case 1:
                 if ((source = zip_source_zip(za, zs, i, 0, 0, 0)) == NULL || zip_replace(za, (zip_uint64_t)idx, source) < 0) {
                     zip_source_free(source);
                     fprintf(stderr, "%s: cannot replace '%s' in `%s': %s\n", progname, fname, tname, zip_strerror(za));
                     zip_close(zs);
                     return NULL;
                 }
                 break;

             case -1:
                 zip_close(zs);
                 return NULL;

             default:
                 fprintf(stderr,
                         "%s: internal error: "
                         "unexpected return code from confirm (%d)\n",
                         progname, err);
                 zip_close(zs);
                 return NULL;
             }
         }
         else {
             if ((source = zip_source_zip(za, zs, i, 0, 0, 0)) == NULL || zip_add(za, fname, source) < 0) {
                 zip_source_free(source);
                 fprintf(stderr, "%s: cannot add '%s' to `%s': %s\n", progname, fname, tname, zip_strerror(za));
                 zip_close(zs);
                 return NULL;
             }
         }
     }

     return zs;
 }
	/*
	zipmerge.c -- merge zip archives
	Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner

	This file is part of libzip, a library to manipulate ZIP archives.
	The authors can be contacted at <libzip@nih.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 <ctype.h>
	#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#include "config.h"

	#ifndef HAVE_GETOPT
	#include "getopt.h"
	#endif

	#include "zip.h"

	char *progname;

	#define PROGRAM "zipmerge"

	#define USAGE "usage: %s [-DhIiSsV] target-zip zip...\n"

	char help_head[] = PROGRAM " (" PACKAGE ") by Dieter Baron and Thomas Klausner\n\n";

	char help[] = "\n\
	-h display this help message\n\
	-V display version number\n\
	-D ignore directory component in file names\n\
	-I ignore case in file names\n\
	-i ask before overwriting files\n\
	-S don't overwrite identical files\n\
	-s overwrite identical files without asking\n\
	\n\
	Report bugs to <libzip@nih.at>.\n";

	char version_string[] = PROGRAM " (" PACKAGE " " VERSION ")\n\
	Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner\n\
	" PACKAGE " comes with ABSOLUTELY NO WARRANTY, to the extent permitted by law.\n";

	#define OPTIONS "hVDiIsS"

	#define CONFIRM_ALL_YES 0x001
	#define CONFIRM_ALL_NO 0x002
	#define CONFIRM_SAME_YES 0x010
	#define CONFIRM_SAME_NO 0x020

	int confirm;
	zip_flags_t name_flags;

	static int confirm_replace(zip_t , const char , zip_uint64_t, zip_t , const char , zip_uint64_t);
	static zip_t merge_zip(zip_t , const char , const char );


	int
	main(int argc, char *argv[]) {
	zip_t *za;
	zip_t **zs;
	int c, err;
	unsigned int i, n;
	char *tname;

	progname = argv[0];

	confirm = CONFIRM_ALL_YES;
	name_flags = 0;

	while ((c = getopt(argc, argv, OPTIONS)) != -1) {
	switch (c) {
	case 'D':
	name_flags \|= ZIP_FL_NODIR;
	break;
	case 'i':
	confirm &= ~CONFIRM_ALL_YES;
	break;
	case 'I':
	name_flags \|= ZIP_FL_NOCASE;
	break;
	case 's':
	confirm &= ~CONFIRM_SAME_NO;
	confirm \|= CONFIRM_SAME_YES;
	break;
	case 'S':
	confirm &= ~CONFIRM_SAME_YES;
	confirm \|= CONFIRM_SAME_NO;
	break;

	case 'h':
	fputs(help_head, stdout);
	printf(USAGE, progname);
	fputs(help, stdout);
	exit(0);
	case 'V':
	fputs(version_string, stdout);
	exit(0);

	default:
	fprintf(stderr, USAGE, progname);
	exit(2);
	}
	}

	if (argc < optind + 2) {
	fprintf(stderr, USAGE, progname);
	exit(2);
	}

	tname = argv[optind++];
	argv += optind;

	n = (unsigned int)(argc - optind);
	if ((zs = (zip_t *)malloc(sizeof(zs[0]) n)) == NULL) {
	fprintf(stderr, "%s: out of memory\n", progname);
	exit(1);
	}

	if ((za = zip_open(tname, ZIP_CREATE, &err)) == NULL) {
	zip_error_t error;
	zip_error_init_with_code(&error, err);
	fprintf(stderr, "%s: can't open zip archive '%s': %s\n", progname, tname, zip_error_strerror(&error));
	zip_error_fini(&error);
	exit(1);
	}

	for (i = 0; i < n; i++) {
	if ((zs[i] = merge_zip(za, tname, argv[i])) == NULL)
	exit(1);
	}

	if (zip_close(za) < 0) {
	fprintf(stderr, "%s: cannot write zip archive '%s': %s\n", progname, tname, zip_strerror(za));
	exit(1);
	}

	for (i = 0; i < n; i++)
	zip_close(zs[i]);

	exit(0);
	}


	static int
	confirm_replace(zip_t za, const char tname, zip_uint64_t it, zip_t zs, const char sname, zip_uint64_t is) {
	char line[1024];
	struct zip_stat st, ss;

	if (confirm & CONFIRM_ALL_YES)
	return 1;
	else if (confirm & CONFIRM_ALL_NO)
	return 0;

	if (zip_stat_index(za, it, ZIP_FL_UNCHANGED, &st) < 0) {
	fprintf(stderr, "%s: cannot stat file %" PRIu64 " in '%s': %s\n", progname, it, tname, zip_strerror(za));
	return -1;
	}
	if (zip_stat_index(zs, is, 0, &ss) < 0) {
	fprintf(stderr, "%s: cannot stat file %" PRIu64 " in '%s': %s\n", progname, is, sname, zip_strerror(zs));
	return -1;
	}

	if (st.size == ss.size && st.crc == ss.crc) {
	if (confirm & CONFIRM_SAME_YES)
	return 1;
	else if (confirm & CONFIRM_SAME_NO)
	return 0;
	}

	printf("replace '%s' (%" PRIu64 " / %08x) in `%s'\n"
	" with '%s' (%" PRIu64 " / %08x) from `%s'? ",
	st.name, st.size, st.crc, tname, ss.name, ss.size, ss.crc, sname);
	fflush(stdout);

	if (fgets(line, sizeof(line), stdin) == NULL) {
	fprintf(stderr, "%s: read error from stdin: %s\n", progname, strerror(errno));
	return -1;
	}

	if (tolower((unsigned char)line[0]) == 'y')
	return 1;

	return 0;
	}


	static zip_t *
	merge_zip(zip_t za, const char tname, const char *sname) {
	zip_t *zs;
	zip_source_t *source;
	zip_int64_t ret, idx;
	zip_uint64_t i;
	int err;
	const char *fname;

	if ((zs = zip_open(sname, 0, &err)) == NULL) {
	zip_error_t error;
	zip_error_init_with_code(&error, err);
	fprintf(stderr, "%s: can't open zip archive '%s': %s\n", progname, sname, zip_error_strerror(&error));
	zip_error_fini(&error);
	return NULL;
	}

	ret = zip_get_num_entries(zs, 0);
	if (ret < 0) {
	fprintf(stderr, "%s: cannot get number of entries for '%s': %s\n", progname, sname, zip_strerror(za));
	return NULL;
	}
	for (i = 0; i < (zip_uint64_t)ret; i++) {
	fname = zip_get_name(zs, i, 0);

	if ((idx = zip_name_locate(za, fname, name_flags)) >= 0) {
	switch (confirm_replace(za, tname, (zip_uint64_t)idx, zs, sname, i)) {
	case 0:
	break;

	case 1:
	if ((source = zip_source_zip(za, zs, i, 0, 0, 0)) == NULL \|\| zip_replace(za, (zip_uint64_t)idx, source) < 0) {
	zip_source_free(source);
	fprintf(stderr, "%s: cannot replace '%s' in `%s': %s\n", progname, fname, tname, zip_strerror(za));
	zip_close(zs);
	return NULL;
	}
	break;

	case -1:
	zip_close(zs);
	return NULL;

	default:
	fprintf(stderr,
	"%s: internal error: "
	"unexpected return code from confirm (%d)\n",
	progname, err);
	zip_close(zs);
	return NULL;
	}
	}
	else {
	if ((source = zip_source_zip(za, zs, i, 0, 0, 0)) == NULL \|\| zip_add(za, fname, source) < 0) {
	zip_source_free(source);
	fprintf(stderr, "%s: cannot add '%s' to `%s': %s\n", progname, fname, tname, zip_strerror(za));
	zip_close(zs);
	return NULL;
	}
	}
	}

	return zs;
	}