1 /*
2  * Copyright (c) 2018, 2019 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 	char *path_packfile;	/* if packed */
33 	int pack_idx;		/* if packed */
34 	off_t pack_offset;	/* if packed */
35 	struct got_delta_chain deltas; /* if deltified */
36 	int refcnt;		/* > 0 if open and/or cached */
37 };
38 
39 struct got_commit_object {
40 	struct got_object_id *tree_id;
41 	unsigned int nparents;
42 	struct got_object_id_queue parent_ids;
43 	char *author;
44 	time_t author_time;	/* UTC */
45 	time_t author_gmtoff;
46 	char *committer;
47 	time_t committer_time;	/* UTC */
48 	time_t committer_gmtoff;
49 	char *logmsg;
50 	int refcnt;		/* > 0 if open and/or cached */
51 };
52 
53 struct got_tree_object {
54 	struct got_tree_entries entries;
55 	int refcnt;
56 };
57 
58 struct got_blob_object {
59 	FILE *f;
60 	uint8_t *data;
61 	size_t hdrlen;
62 	size_t blocksize;
63 	uint8_t *read_buf;
64 	struct got_object_id id;
65 };
66 
67 struct got_tag_object {
68 	struct got_object_id id;
69 	int obj_type;
70 	char *tag;
71 	time_t tagger_time;
72 	time_t tagger_gmtoff;
73 	char *tagger;
74 	char *tagmsg;
75 	int refcnt;		/* > 0 if open and/or cached */
76 };
77 
78 #define GOT_OBJ_LABEL_COMMIT	"commit"
79 #define GOT_OBJ_LABEL_TREE	"tree"
80 #define GOT_OBJ_LABEL_BLOB	"blob"
81 #define GOT_OBJ_LABEL_TAG	"tag"
82 
83 #define GOT_COMMIT_LABEL_TREE		"tree "
84 #define GOT_COMMIT_LABEL_PARENT		"parent "
85 #define GOT_COMMIT_LABEL_AUTHOR		"author "
86 #define GOT_COMMIT_LABEL_COMMITTER	"committer "
87 
88 #define GOT_TAG_LABEL_OBJECT		"object "
89 #define GOT_TAG_LABEL_TYPE		"type "
90 #define GOT_TAG_LABEL_TAG		"tag "
91 #define GOT_TAG_LABEL_TAGGER		"tagger "
92 
93 struct got_object_id *got_object_get_id(struct got_object *);
94 const struct got_error *got_object_get_id_str(char **, struct got_object *);
95 const struct got_error *got_object_get_path(char **, struct got_object_id *,
96     struct got_repository *);
97 const struct got_error *got_object_open(struct got_object **,
98     struct got_repository *, struct got_object_id *);
99 const struct got_error *got_object_open_by_id_str(struct got_object **,
100     struct got_repository *, const char *);
101 void got_object_close(struct got_object *);
102 const struct got_error *got_object_commit_open(struct got_commit_object **,
103     struct got_repository *, struct got_object *);
104 const struct got_error *got_object_tree_open(struct got_tree_object **,
105     struct got_repository *, struct got_object *);
106 const struct got_error *got_object_blob_open(struct got_blob_object **,
107     struct got_repository *, struct got_object *, size_t);
108 char *got_object_blob_id_str(struct got_blob_object*, char *, size_t);
109 const struct got_error *got_object_tag_open(struct got_tag_object **,
110     struct got_repository *, struct got_object *);
111 const struct got_error *got_object_tree_entry_dup(struct got_tree_entry **,
112     struct got_tree_entry *);