push --force-with-lease: implement logic to populate old_sha1_expect[]
[git/git.git] / remote.h
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1#ifndef REMOTE_H
2#define REMOTE_H
3
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4#include "parse-options.h"
5
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6enum {
7 REMOTE_CONFIG,
8 REMOTE_REMOTES,
9 REMOTE_BRANCHES
10};
11
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12struct remote {
13 const char *name;
89cf4c70 14 int origin;
5751f490 15
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16 const char *foreign_vcs;
17
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18 const char **url;
19 int url_nr;
2d31347b 20 int url_alloc;
5751f490 21
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22 const char **pushurl;
23 int pushurl_nr;
24 int pushurl_alloc;
25
5751f490 26 const char **push_refspec;
6b62816c 27 struct refspec *push;
5751f490 28 int push_refspec_nr;
2d31347b 29 int push_refspec_alloc;
5751f490 30
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31 const char **fetch_refspec;
32 struct refspec *fetch;
33 int fetch_refspec_nr;
2d31347b 34 int fetch_refspec_alloc;
5d46c9d4 35
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36 /*
37 * -1 to never fetch tags
38 * 0 to auto-follow tags on heuristic (default)
39 * 1 to always auto-follow tags
40 * 2 to always fetch tags
41 */
42 int fetch_tags;
211c8968 43 int skip_default_update;
84bb2dfd 44 int mirror;
d71ab174 45
5751f490 46 const char *receivepack;
0012ba21 47 const char *uploadpack;
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48
49 /*
50 * for curl remotes only
51 */
52 char *http_proxy;
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53};
54
55struct remote *remote_get(const char *name);
f24f715e 56struct remote *pushremote_get(const char *name);
9a23ba33 57int remote_is_configured(const char *name);
5751f490 58
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59typedef int each_remote_fn(struct remote *remote, void *priv);
60int for_each_remote(each_remote_fn fn, void *priv);
61
28b91f8a 62int remote_has_url(struct remote *remote, const char *url);
5d46c9d4 63
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64struct refspec {
65 unsigned force : 1;
66 unsigned pattern : 1;
a83619d6 67 unsigned matching : 1;
6e7b66ee 68 unsigned exact_sha1 : 1;
6b62816c 69
b42f6927 70 char *src;
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71 char *dst;
72};
73
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74extern const struct refspec *tag_refspec;
75
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76struct ref {
77 struct ref *next;
78 unsigned char old_sha1[20];
79 unsigned char new_sha1[20];
91048a95 80 unsigned char old_sha1_expect[20]; /* used by expect-old */
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81 char *symref;
82 unsigned int
83 force:1,
84 forced_update:1,
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85 expect_old_sha1:1,
86 expect_old_no_trackback:1,
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87 deletion:1,
88 matched:1;
89
90 /*
91 * Order is important here, as we write to FETCH_HEAD
92 * in numeric order. And the default NOT_FOR_MERGE
93 * should be 0, so that xcalloc'd structures get it
94 * by default.
95 */
96 enum {
97 FETCH_HEAD_MERGE = -1,
98 FETCH_HEAD_NOT_FOR_MERGE = 0,
99 FETCH_HEAD_IGNORE = 1
100 } fetch_head_status;
101
102 enum {
103 REF_STATUS_NONE = 0,
104 REF_STATUS_OK,
105 REF_STATUS_REJECT_NONFASTFORWARD,
106 REF_STATUS_REJECT_ALREADY_EXISTS,
107 REF_STATUS_REJECT_NODELETE,
108 REF_STATUS_REJECT_FETCH_FIRST,
109 REF_STATUS_REJECT_NEEDS_FORCE,
110 REF_STATUS_UPTODATE,
111 REF_STATUS_REMOTE_REJECT,
112 REF_STATUS_EXPECTING_REPORT
113 } status;
114 char *remote_status;
115 struct ref *peer_ref; /* when renaming */
116 char name[FLEX_ARRAY]; /* more */
117};
118
119#define REF_NORMAL (1u << 0)
120#define REF_HEADS (1u << 1)
121#define REF_TAGS (1u << 2)
122
123extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
124
59c69c0c 125struct ref *alloc_ref(const char *name);
59a57757 126struct ref *copy_ref(const struct ref *ref);
4577370e 127struct ref *copy_ref_list(const struct ref *ref);
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128void sort_ref_list(struct ref **, int (*cmp)(const void *, const void *));
129int ref_compare_name(const void *, const void *);
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130
131int check_ref_type(const struct ref *ref, int flags);
132
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133/*
134 * Frees the entire list and peers of elements.
135 */
136void free_refs(struct ref *ref);
137
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138struct extra_have_objects {
139 int nr, alloc;
140 unsigned char (*array)[20];
141};
142extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
143 struct ref **list, unsigned int flags,
144 struct extra_have_objects *);
145
be885d96 146int resolve_remote_symref(struct ref *ref, struct ref *list);
ec8452d5 147int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1);
be885d96 148
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149/*
150 * Removes and frees any duplicate refs in the map.
151 */
152void ref_remove_duplicates(struct ref *ref_map);
153
24b6177e 154int valid_fetch_refspec(const char *refspec);
46220ca1 155struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec);
d71ab174 156
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157void free_refspec(int nr_refspec, struct refspec *refspec);
158
159char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
160 const char *name);
161
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162int match_push_refs(struct ref *src, struct ref **dst,
163 int nr_refspec, const char **refspec, int all);
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164void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
165 int force_update);
6b62816c 166
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167/*
168 * Given a list of the remote refs and the specification of things to
169 * fetch, makes a (separate) list of the refs to fetch and the local
170 * refs to store into.
171 *
172 * *tail is the pointer to the tail pointer of the list of results
173 * beforehand, and will be set to the tail pointer of the list of
174 * results afterward.
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175 *
176 * missing_ok is usually false, but when we are adding branch.$name.merge
177 * it is Ok if the branch is not at the remote anymore.
d71ab174 178 */
4577370e 179int get_fetch_map(const struct ref *remote_refs, const struct refspec *refspec,
9ad7c5ae 180 struct ref ***tail, int missing_ok);
d71ab174 181
4577370e 182struct ref *get_remote_ref(const struct ref *remote_refs, const char *name);
d71ab174 183
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184/*
185 * For the given remote, reads the refspec's src and sets the other fields.
186 */
187int remote_find_tracking(struct remote *remote, struct refspec *refspec);
188
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189struct branch {
190 const char *name;
191 const char *refname;
192
193 const char *remote_name;
194 struct remote *remote;
195
196 const char **merge_name;
197 struct refspec **merge;
198 int merge_nr;
2d31347b 199 int merge_alloc;
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200};
201
202struct branch *branch_get(const char *name);
203
204int branch_has_merge_config(struct branch *branch);
85682c19 205int branch_merge_matches(struct branch *, int n, const char *);
cf818348 206
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207/* Flags to match_refs. */
208enum match_refs_flags {
209 MATCH_REFS_NONE = 0,
210 MATCH_REFS_ALL = (1 << 0),
6ddba5e2 211 MATCH_REFS_MIRROR = (1 << 1),
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212 MATCH_REFS_PRUNE = (1 << 2),
213 MATCH_REFS_FOLLOW_TAGS = (1 << 3)
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214};
215
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216/* Reporting of tracking info */
217int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs);
218int format_tracking_info(struct branch *branch, struct strbuf *sb);
219
454e2025 220struct ref *get_local_heads(void);
8ef51733 221/*
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222 * Find refs from a list which are likely to be pointed to by the given HEAD
223 * ref. If 'all' is false, returns the most likely ref; otherwise, returns a
224 * list of all candidate refs. If no match is found (or 'head' is NULL),
225 * returns NULL. All returns are newly allocated and should be freed.
8ef51733 226 */
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227struct ref *guess_remote_head(const struct ref *head,
228 const struct ref *refs,
229 int all);
230
f2ef6075 231/* Return refs which no longer exist on remote */
ed43de6e 232struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map);
f2ef6075 233
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234/*
235 * Compare-and-swap
236 */
237#define CAS_OPT_NAME "force-with-lease"
238
239struct push_cas_option {
240 unsigned use_tracking_for_rest:1;
241 struct push_cas {
242 unsigned char expect[20];
243 unsigned use_tracking:1;
244 char *refname;
245 } *entry;
246 int nr;
247 int alloc;
248};
249
250extern int parseopt_push_cas_option(const struct option *, const char *arg, int unset);
251extern int parse_push_cas_option(struct push_cas_option *, const char *arg, int unset);
252extern void clear_cas_option(struct push_cas_option *);
253
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254extern int is_empty_cas(const struct push_cas_option *);
255void apply_push_cas(struct push_cas_option *, struct remote *, struct ref *);
256
5751f490 257#endif