1 /*
2  * Copyright (c) 2018, 2019, 2020, 2023 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/queue.h>
18 
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <sha1.h>
23 #include <sha2.h>
24 
25 #include "got_object.h"
26 #include "got_error.h"
27 
28 #include "got_lib_object_qid.h"
29 #include "got_lib_hash.h"
30 
31 const struct got_error *
32 got_object_qid_alloc_partial(struct got_object_qid **qid)
33 {
34 	*qid = malloc(sizeof(**qid));
35 	if (*qid == NULL)
36 		return got_error_from_errno("malloc");
37 
38 	(*qid)->data = NULL;
39 	return NULL;
40 }
41 
42 const struct got_error *
43 got_object_qid_alloc(struct got_object_qid **qid, struct got_object_id *id)
44 {
45 	*qid = calloc(1, sizeof(**qid));
46 	if (*qid == NULL)
47 		return got_error_from_errno("calloc");
48 
49 	memcpy(&(*qid)->id, id, sizeof((*qid)->id));
50 	return NULL;
51 }
52 
53 void
54 got_object_qid_free(struct got_object_qid *qid)
55 {
56 	free(qid);
57 }
58 
59 void
60 got_object_id_queue_free(struct got_object_id_queue *ids)
61 {
62 	struct got_object_qid *qid;
63 
64 	while (!STAILQ_EMPTY(ids)) {
65 		qid = STAILQ_FIRST(ids);
66 		STAILQ_REMOVE_HEAD(ids, entry);
67 		got_object_qid_free(qid);
68 	}
69 }
70 
71 const struct got_error *
72 got_object_id_queue_copy(const struct got_object_id_queue *src,
73     struct got_object_id_queue *dest)
74 {
75 	const struct got_error *err;
76 	struct got_object_qid *qid;
77 
78 	STAILQ_FOREACH(qid, src, entry) {
79 		struct got_object_qid *new;
80 		/*
81 		 * Deep-copy the object ID only. Let the caller deal
82 		 * with setting up the new->data pointer if needed.
83 		 */
84 		err = got_object_qid_alloc(&new, &qid->id);
85 		if (err) {
86 			got_object_id_queue_free(dest);
87 			return err;
88 		}
89 		STAILQ_INSERT_TAIL(dest, new, entry);
90 	}
91 
92 	return NULL;
93 }