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      1 /*-
      2  * Copyright (c) 2014 Michihiro NAKAJIMA
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
     15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
     18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "archive_platform.h"
     27 
     28 #ifdef HAVE_ERRNO_H
     29 #include <errno.h>
     30 #endif
     31 #include "archive_write_private.h"
     32 
     33 static int
     34 set_passphrase(struct archive_write *a, const char *p)
     35 {
     36 	if (p == NULL || p[0] == '\0') {
     37 		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
     38 		    "Empty passphrase is unacceptable");
     39 		return (ARCHIVE_FAILED);
     40 	}
     41 	free(a->passphrase);
     42 	a->passphrase = strdup(p);
     43 	if (a->passphrase == NULL) {
     44 		archive_set_error(&a->archive, ENOMEM,
     45 		    "Can't allocate data for passphrase");
     46 		return (ARCHIVE_FATAL);
     47 	}
     48 	return (ARCHIVE_OK);
     49 }
     50 
     51 
     52 int
     53 archive_write_set_passphrase(struct archive *_a, const char *p)
     54 {
     55 	struct archive_write *a = (struct archive_write *)_a;
     56 
     57 	archive_check_magic(_a, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW,
     58 		"archive_write_set_passphrase");
     59 
     60 	return (set_passphrase(a, p));
     61 }
     62 
     63 
     64 int
     65 archive_write_set_passphrase_callback(struct archive *_a, void *client_data,
     66     archive_passphrase_callback *cb)
     67 {
     68 	struct archive_write *a = (struct archive_write *)_a;
     69 
     70 	archive_check_magic(_a, ARCHIVE_WRITE_MAGIC, ARCHIVE_STATE_NEW,
     71 		"archive_write_set_passphrase_callback");
     72 
     73 	a->passphrase_callback = cb;
     74 	a->passphrase_client_data = client_data;
     75 	return (ARCHIVE_OK);
     76 }
     77 
     78 
     79 const char *
     80 __archive_write_get_passphrase(struct archive_write *a)
     81 {
     82 
     83 	if (a->passphrase != NULL)
     84 		return (a->passphrase);
     85 
     86 	if (a->passphrase_callback != NULL) {
     87 		const char *p;
     88 		p = a->passphrase_callback(&a->archive,
     89 		    a->passphrase_client_data);
     90 		set_passphrase(a, p);
     91 		a->passphrase_callback = NULL;
     92 		a->passphrase_client_data = NULL;
     93 	}
     94 	return (a->passphrase);
     95 }
     96