1 /*
2  * Copyright (c) 2018, 2019, 2020 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 struct got_object_id {
18 	u_int8_t sha1[SHA1_DIGEST_LENGTH];
19 };
20 
21 struct got_object {
22 	int type;
23 
24 	int flags;
25 #define GOT_OBJ_FLAG_PACKED		0x01
26 #define GOT_OBJ_FLAG_DELTIFIED		0x02
27 
28 	size_t hdrlen;
29 	size_t size;
30 	struct got_object_id id;
31 
32 	int pack_idx;		/* if packed */
33 	off_t pack_offset;	/* if packed */
34 	struct got_delta_chain deltas; /* if deltified */
35 	int refcnt;		/* > 0 if open and/or cached */
36 };
37 
38 struct got_commit_object {
39 	struct got_object_id *tree_id;
40 	unsigned int nparents;
41 	struct got_object_id_queue parent_ids;
42 	char *author;
43 	time_t author_time;	/* UTC */
44 	time_t author_gmtoff;
45 	char *committer;
46 	time_t committer_time;	/* UTC */
47 	time_t committer_gmtoff;
48 	char *logmsg;
49 	int refcnt;		/* > 0 if open and/or cached */
50 
51 	int flags;
52 #define GOT_COMMIT_FLAG_PACKED		0x01
53 };
54 
55 struct got_tree_entry {
56 	mode_t mode;
57 	char name[NAME_MAX + 1 /* NUL */];
58 	struct got_object_id id;
59 	int idx;
60 };
61 
62 struct got_tree_object {
63 	int nentries;
64 	struct got_tree_entry *entries;
65 	int refcnt;
66 };
67 
68 struct got_blob_object {
69 	FILE *f;
70 	uint8_t *data;
71 	size_t hdrlen;
72 	size_t blocksize;
73 	uint8_t *read_buf;
74 	struct got_object_id id;
75 };
76 
77 struct got_tag_object {
78 	struct got_object_id id;
79 	int obj_type;
80 	char *tag;
81 	time_t tagger_time;
82 	time_t tagger_gmtoff;
83 	char *tagger;
84 	char *tagmsg;
85 	int refcnt;		/* > 0 if open and/or cached */
86 };
87 
88 struct got_object_id *got_object_get_id(struct got_object *);
89 const struct got_error *got_object_get_id_str(char **, struct got_object *);
90 const struct got_error *got_object_get_path(char **, struct got_object_id *,
91     struct got_repository *);
92 const struct got_error *got_object_open(struct got_object **,
93     struct got_repository *, struct got_object_id *);
94 const struct got_error *got_object_open_by_id_str(struct got_object **,
95     struct got_repository *, const char *);
96 void got_object_close(struct got_object *);
97 const struct got_error *got_object_commit_open(struct got_commit_object **,
98     struct got_repository *, struct got_object *);
99 const struct got_error *got_object_tree_open(struct got_tree_object **,
100     struct got_repository *, struct got_object *);
101 const struct got_error *got_object_blob_open(struct got_blob_object **,
102     struct got_repository *, struct got_object *, size_t);
103 char *got_object_blob_id_str(struct got_blob_object*, char *, size_t);
104 const struct got_error *got_object_tag_open(struct got_tag_object **,
105     struct got_repository *, struct got_object *);
106 const struct got_error *got_object_tree_entry_dup(struct got_tree_entry **,
107     struct got_tree_entry *);
108 
109 const struct got_error *got_traverse_packed_commits(
110     struct got_object_id_queue *, struct got_object_id *, const char *,
111     struct got_repository *);