aboutsummaryrefslogtreecommitdiff
path: root/remote.h
blob: 2ecf4c8c74ce590c9bcc917d997b3c7acf9c07c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
#ifndef REMOTE_H
#define REMOTE_H

#include "parse-options.h"
#include "hashmap.h"

enum {
	REMOTE_UNCONFIGURED = 0,
	REMOTE_CONFIG,
	REMOTE_REMOTES,
	REMOTE_BRANCHES
};

struct remote {
	struct hashmap_entry ent;  /* must be first */

	const char *name;
	int origin, configured_in_repo;

	const char *foreign_vcs;

	const char **url;
	int url_nr;
	int url_alloc;

	const char **pushurl;
	int pushurl_nr;
	int pushurl_alloc;

	const char **push_refspec;
	struct refspec *push;
	int push_refspec_nr;
	int push_refspec_alloc;

	const char **fetch_refspec;
	struct refspec *fetch;
	int fetch_refspec_nr;
	int fetch_refspec_alloc;

	/*
	 * -1 to never fetch tags
	 * 0 to auto-follow tags on heuristic (default)
	 * 1 to always auto-follow tags
	 * 2 to always fetch tags
	 */
	int fetch_tags;
	int skip_default_update;
	int mirror;
	int prune;

	const char *receivepack;
	const char *uploadpack;

	/*
	 * for curl remotes only
	 */
	char *http_proxy;
	char *http_proxy_authmethod;
};

struct remote *remote_get(const char *name);
struct remote *pushremote_get(const char *name);
int remote_is_configured(struct remote *remote, int in_repo);

typedef int each_remote_fn(struct remote *remote, void *priv);
int for_each_remote(each_remote_fn fn, void *priv);

int remote_has_url(struct remote *remote, const char *url);

struct refspec {
	unsigned force : 1;
	unsigned pattern : 1;
	unsigned matching : 1;
	unsigned exact_sha1 : 1;

	char *src;
	char *dst;
};

extern const struct refspec *tag_refspec;

struct ref {
	struct ref *next;
	struct object_id old_oid;
	struct object_id new_oid;
	struct object_id old_oid_expect; /* used by expect-old */
	char *symref;
	unsigned int
		force:1,
		forced_update:1,
		expect_old_sha1:1,
		deletion:1;

	enum {
		REF_NOT_MATCHED = 0, /* initial value */
		REF_MATCHED,
		REF_UNADVERTISED_NOT_ALLOWED
	} match_status;

	/*
	 * Order is important here, as we write to FETCH_HEAD
	 * in numeric order. And the default NOT_FOR_MERGE
	 * should be 0, so that xcalloc'd structures get it
	 * by default.
	 */
	enum {
		FETCH_HEAD_MERGE = -1,
		FETCH_HEAD_NOT_FOR_MERGE = 0,
		FETCH_HEAD_IGNORE = 1
	} fetch_head_status;

	enum {
		REF_STATUS_NONE = 0,
		REF_STATUS_OK,
		REF_STATUS_REJECT_NONFASTFORWARD,
		REF_STATUS_REJECT_ALREADY_EXISTS,
		REF_STATUS_REJECT_NODELETE,
		REF_STATUS_REJECT_FETCH_FIRST,
		REF_STATUS_REJECT_NEEDS_FORCE,
		REF_STATUS_REJECT_STALE,
		REF_STATUS_REJECT_SHALLOW,
		REF_STATUS_UPTODATE,
		REF_STATUS_REMOTE_REJECT,
		REF_STATUS_EXPECTING_REPORT,
		REF_STATUS_ATOMIC_PUSH_FAILED
	} status;
	char *remote_status;
	struct ref *peer_ref; /* when renaming */
	char name[FLEX_ARRAY]; /* more */
};

#define REF_NORMAL	(1u << 0)
#define REF_HEADS	(1u << 1)
#define REF_TAGS	(1u << 2)

extern struct ref *find_ref_by_name(const struct ref *list, const char *name);

struct ref *alloc_ref(const char *name);
struct ref *copy_ref(const struct ref *ref);
struct ref *copy_ref_list(const struct ref *ref);
void sort_ref_list(struct ref **, int (*cmp)(const void *, const void *));
extern int count_refspec_match(const char *, struct ref *refs, struct ref **matched_ref);
int ref_compare_name(const void *, const void *);

int check_ref_type(const struct ref *ref, int flags);

/*
 * Frees the entire list and peers of elements.
 */
void free_refs(struct ref *ref);

struct oid_array;
extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
				     struct ref **list, unsigned int flags,
				     struct oid_array *extra_have,
				     struct oid_array *shallow);

int resolve_remote_symref(struct ref *ref, struct ref *list);
int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);

/*
 * Remove and free all but the first of any entries in the input list
 * that map the same remote reference to the same local reference.  If
 * there are two entries that map different remote references to the
 * same local reference, emit an error message and die.  Return a
 * pointer to the head of the resulting list.
 */
struct ref *ref_remove_duplicates(struct ref *ref_map);

int valid_fetch_refspec(const char *refspec);
struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec);
extern struct refspec *parse_push_refspec(int nr_refspec, const char **refspec);

void free_refspec(int nr_refspec, struct refspec *refspec);

extern int query_refspecs(struct refspec *specs, int nr, struct refspec *query);
char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
		     const char *name);

int check_push_refs(struct ref *src, int nr_refspec, const char **refspec);
int match_push_refs(struct ref *src, struct ref **dst,
		    int nr_refspec, const char **refspec, int all);
void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
	int force_update);

/*
 * Given a list of the remote refs and the specification of things to
 * fetch, makes a (separate) list of the refs to fetch and the local
 * refs to store into.
 *
 * *tail is the pointer to the tail pointer of the list of results
 * beforehand, and will be set to the tail pointer of the list of
 * results afterward.
 *
 * missing_ok is usually false, but when we are adding branch.$name.merge
 * it is Ok if the branch is not at the remote anymore.
 */
int get_fetch_map(const struct ref *remote_refs, const struct refspec *refspec,
		  struct ref ***tail, int missing_ok);

struct ref *get_remote_ref(const struct ref *remote_refs, const char *name);

/*
 * For the given remote, reads the refspec's src and sets the other fields.
 */
int remote_find_tracking(struct remote *remote, struct refspec *refspec);

struct branch {
	const char *name;
	const char *refname;

	const char *remote_name;
	const char *pushremote_name;

	const char **merge_name;
	struct refspec **merge;
	int merge_nr;
	int merge_alloc;

	const char *push_tracking_ref;
};

struct branch *branch_get(const char *name);
const char *remote_for_branch(struct branch *branch, int *explicit);
const char *pushremote_for_branch(struct branch *branch, int *explicit);

int branch_has_merge_config(struct branch *branch);
int branch_merge_matches(struct branch *, int n, const char *);

/**
 * Return the fully-qualified refname of the tracking branch for `branch`.
 * I.e., what "branch@{upstream}" would give you. Returns NULL if no
 * upstream is defined.
 *
 * If `err` is not NULL and no upstream is defined, a more specific error
 * message is recorded there (if the function does not return NULL, then
 * `err` is not touched).
 */
const char *branch_get_upstream(struct branch *branch, struct strbuf *err);

/**
 * Return the tracking branch that corresponds to the ref we would push to
 * given a bare `git push` while `branch` is checked out.
 *
 * The return value and `err` conventions match those of `branch_get_upstream`.
 */
const char *branch_get_push(struct branch *branch, struct strbuf *err);

/* Flags to match_refs. */
enum match_refs_flags {
	MATCH_REFS_NONE		= 0,
	MATCH_REFS_ALL 		= (1 << 0),
	MATCH_REFS_MIRROR	= (1 << 1),
	MATCH_REFS_PRUNE	= (1 << 2),
	MATCH_REFS_FOLLOW_TAGS	= (1 << 3)
};

/* Reporting of tracking info */
int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
		       const char **upstream_name);
int format_tracking_info(struct branch *branch, struct strbuf *sb);

struct ref *get_local_heads(void);
/*
 * Find refs from a list which are likely to be pointed to by the given HEAD
 * ref. If 'all' is false, returns the most likely ref; otherwise, returns a
 * list of all candidate refs. If no match is found (or 'head' is NULL),
 * returns NULL. All returns are newly allocated and should be freed.
 */
struct ref *guess_remote_head(const struct ref *head,
			      const struct ref *refs,
			      int all);

/* Return refs which no longer exist on remote */
struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map);

/*
 * Compare-and-swap
 */
#define CAS_OPT_NAME "force-with-lease"

struct push_cas_option {
	unsigned use_tracking_for_rest:1;
	struct push_cas {
		struct object_id expect;
		unsigned use_tracking:1;
		char *refname;
	} *entry;
	int nr;
	int alloc;
};

extern int parseopt_push_cas_option(const struct option *, const char *arg, int unset);

extern int is_empty_cas(const struct push_cas_option *);
void apply_push_cas(struct push_cas_option *, struct remote *, struct ref *);

#endif