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_raw_object {
39 	FILE *f;
40 	uint8_t *data;
41 	off_t size;
42 	size_t hdrlen;
43 	int refcnt;		/* > 0 if open and/or cached */
44 };
45 
46 struct got_commit_object {
47 	struct got_object_id *tree_id;
48 	unsigned int nparents;
49 	struct got_object_id_queue parent_ids;
50 	char *author;
51 	time_t author_time;	/* UTC */
52 	time_t author_gmtoff;
53 	char *committer;
54 	time_t committer_time;	/* UTC */
55 	time_t committer_gmtoff;
56 	char *logmsg;
57 	int refcnt;		/* > 0 if open and/or cached */
58 
59 	int flags;
60 #define GOT_COMMIT_FLAG_PACKED		0x01
61 };
62 
63 struct got_tree_entry {
64 	mode_t mode;
65 	char name[NAME_MAX + 1 /* NUL */];
66 	struct got_object_id id;
67 	int idx;
68 };
69 
70 struct got_tree_object {
71 	int nentries;
72 	struct got_tree_entry *entries;
73 	int refcnt;
74 };
75 
76 struct got_blob_object {
77 	FILE *f;
78 	uint8_t *data;
79 	size_t hdrlen;
80 	size_t blocksize;
81 	uint8_t *read_buf;
82 	struct got_object_id id;
83 };
84 
85 struct got_tag_object {
86 	struct got_object_id id;
87 	int obj_type;
88 	char *tag;
89 	time_t tagger_time;
90 	time_t tagger_gmtoff;
91 	char *tagger;
92 	char *tagmsg;
93 	int refcnt;		/* > 0 if open and/or cached */
94 };
95 
96 struct got_object_id *got_object_get_id(struct got_object *);
97 const struct got_error *got_object_get_id_str(char **, struct got_object *);
98 const struct got_error *got_object_get_path(char **, struct got_object_id *,
99     struct got_repository *);
100 const struct got_error *got_object_open_loose_fd(int *, struct got_object_id *,
101     struct got_repository *);
102 const struct got_error *got_object_open_packed(struct got_object **,
103     struct got_object_id *, struct got_repository *);
104 const struct got_error *got_object_read_header_privsep(struct got_object **,
105     struct got_object_id *, struct got_repository *, int);
106 const struct got_error *got_object_open(struct got_object **,
107     struct got_repository *, struct got_object_id *);
108 const struct got_error *got_object_raw_open(struct got_raw_object **, int *,
109     struct got_repository *, struct got_object_id *);
110 const struct got_error *got_object_raw_close(struct got_raw_object *);
111 const struct got_error *got_object_open_by_id_str(struct got_object **,
112     struct got_repository *, const char *);
113 void got_object_close(struct got_object *);
114 const struct got_error *got_object_commit_open(struct got_commit_object **,
115     struct got_repository *, struct got_object *);
116 const struct got_error *got_object_tree_open(struct got_tree_object **,
117     struct got_repository *, struct got_object *);
118 const struct got_error *got_object_blob_open(struct got_blob_object **,
119     struct got_repository *, struct got_object *, size_t);
120 char *got_object_blob_id_str(struct got_blob_object*, char *, size_t);
121 const struct got_error *got_object_tag_open(struct got_tag_object **,
122     struct got_repository *, struct got_object *);
123 const struct got_error *got_object_tree_entry_dup(struct got_tree_entry **,
124     struct got_tree_entry *);
125 
126 const struct got_error *got_traverse_packed_commits(
127     struct got_object_id_queue *, struct got_object_id *, const char *,
128     struct got_repository *);