remote.h

   1 #ifndef REMOTE_H
   2 #define REMOTE_H
   3
   4 #include "parse-options.h"
   5 #include "hashmap.h"
   6
   7 enum {
   8         REMOTE_UNCONFIGURED = 0,
   9         REMOTE_CONFIG,
  10         REMOTE_REMOTES,
  11         REMOTE_BRANCHES
  12 };
  13
  14 struct remote {
  15         struct hashmap_entry ent;  /* must be first */
  16
  17         const char *name;
  18         int origin;
  19
  20         const char *foreign_vcs;
  21
  22         const char **url;
  23         int url_nr;
  24         int url_alloc;
  25
  26         const char **pushurl;
  27         int pushurl_nr;
  28         int pushurl_alloc;
  29
  30         const char **push_refspec;
  31         struct refspec *push;
  32         int push_refspec_nr;
  33         int push_refspec_alloc;
  34
  35         const char **fetch_refspec;
  36         struct refspec *fetch;
  37         int fetch_refspec_nr;
  38         int fetch_refspec_alloc;
  39
  40         /*
  41          * -1 to never fetch tags
  42          * 0 to auto-follow tags on heuristic (default)
  43          * 1 to always auto-follow tags
  44          * 2 to always fetch tags
  45          */
  46         int fetch_tags;
  47         int skip_default_update;
  48         int mirror;
  49         int prune;
  50
  51         const char *receivepack;
  52         const char *uploadpack;
  53
  54         /*
  55          * for curl remotes only
  56          */
  57         char *http_proxy;
  58         char *http_proxy_authmethod;
  59 };
  60
  61 struct remote *remote_get(const char *name);
  62 struct remote *pushremote_get(const char *name);
  63 int remote_is_configured(struct remote *remote);
  64
  65 typedef int each_remote_fn(struct remote *remote, void *priv);
  66 int for_each_remote(each_remote_fn fn, void *priv);
  67
  68 int remote_has_url(struct remote *remote, const char *url);
  69
  70 struct refspec {
  71         unsigned force : 1;
  72         unsigned pattern : 1;
  73         unsigned matching : 1;
  74         unsigned exact_sha1 : 1;
  75
  76         char *src;
  77         char *dst;
  78 };
  79
  80 extern const struct refspec *tag_refspec;
  81
  82 struct ref {
  83         struct ref *next;
  84         struct object_id old_oid;
  85         struct object_id new_oid;
  86         struct object_id old_oid_expect; /* used by expect-old */
  87         char *symref;
  88         unsigned int
  89                 force:1,
  90                 forced_update:1,
  91                 expect_old_sha1:1,
  92                 expect_old_no_trackback:1,
  93                 deletion:1,
  94                 matched:1;
  95
  96         /*
  97          * Order is important here, as we write to FETCH_HEAD
  98          * in numeric order. And the default NOT_FOR_MERGE
  99          * should be 0, so that xcalloc'd structures get it
 100          * by default.
 101          */
 102         enum {
 103                 FETCH_HEAD_MERGE = -1,
 104                 FETCH_HEAD_NOT_FOR_MERGE = 0,
 105                 FETCH_HEAD_IGNORE = 1
 106         } fetch_head_status;
 107
 108         enum {
 109                 REF_STATUS_NONE = 0,
 110                 REF_STATUS_OK,
 111                 REF_STATUS_REJECT_NONFASTFORWARD,
 112                 REF_STATUS_REJECT_ALREADY_EXISTS,
 113                 REF_STATUS_REJECT_NODELETE,
 114                 REF_STATUS_REJECT_FETCH_FIRST,
 115                 REF_STATUS_REJECT_NEEDS_FORCE,
 116                 REF_STATUS_REJECT_STALE,
 117                 REF_STATUS_REJECT_SHALLOW,
 118                 REF_STATUS_UPTODATE,
 119                 REF_STATUS_REMOTE_REJECT,
 120                 REF_STATUS_EXPECTING_REPORT,
 121                 REF_STATUS_ATOMIC_PUSH_FAILED
 122         } status;
 123         char *remote_status;
 124         struct ref *peer_ref; /* when renaming */
 125         char name[FLEX_ARRAY]; /* more */
 126 };
 127
 128 #define REF_NORMAL      (1u << 0)
 129 #define REF_HEADS       (1u << 1)
 130 #define REF_TAGS        (1u << 2)
 131
 132 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
 133
 134 struct ref *alloc_ref(const char *name);
 135 struct ref *copy_ref(const struct ref *ref);
 136 struct ref *copy_ref_list(const struct ref *ref);
 137 void sort_ref_list(struct ref **, int (*cmp)(const void *, const void *));
 138 extern int count_refspec_match(const char *, struct ref *refs, struct ref **matched_ref);
 139 int ref_compare_name(const void *, const void *);
 140
 141 int check_ref_type(const struct ref *ref, int flags);
 142
 143 /*
 144  * Frees the entire list and peers of elements.
 145  */
 146 void free_refs(struct ref *ref);
 147
 148 struct sha1_array;
 149 extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
 150                                      struct ref **list, unsigned int flags,
 151                                      struct sha1_array *extra_have,
 152                                      struct sha1_array *shallow);
 153
 154 int resolve_remote_symref(struct ref *ref, struct ref *list);
 155 int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);
 156
 157 /*
 158  * Remove and free all but the first of any entries in the input list
 159  * that map the same remote reference to the same local reference.  If
 160  * there are two entries that map different remote references to the
 161  * same local reference, emit an error message and die.  Return a
 162  * pointer to the head of the resulting list.
 163  */
 164 struct ref *ref_remove_duplicates(struct ref *ref_map);
 165
 166 int valid_fetch_refspec(const char *refspec);
 167 struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec);
 168
 169 void free_refspec(int nr_refspec, struct refspec *refspec);
 170
 171 extern int query_refspecs(struct refspec *specs, int nr, struct refspec *query);
 172 char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
 173                      const char *name);
 174
 175 int check_push_refs(struct ref *src, int nr_refspec, const char **refspec);
 176 int match_push_refs(struct ref *src, struct ref **dst,
 177                     int nr_refspec, const char **refspec, int all);
 178 void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
 179         int force_update);
 180
 181 /*
 182  * Given a list of the remote refs and the specification of things to
 183  * fetch, makes a (separate) list of the refs to fetch and the local
 184  * refs to store into.
 185  *
 186  * *tail is the pointer to the tail pointer of the list of results
 187  * beforehand, and will be set to the tail pointer of the list of
 188  * results afterward.
 189  *
 190  * missing_ok is usually false, but when we are adding branch.$name.merge
 191  * it is Ok if the branch is not at the remote anymore.
 192  */
 193 int get_fetch_map(const struct ref *remote_refs, const struct refspec *refspec,
 194                   struct ref ***tail, int missing_ok);
 195
 196 struct ref *get_remote_ref(const struct ref *remote_refs, const char *name);
 197
 198 /*
 199  * For the given remote, reads the refspec's src and sets the other fields.
 200  */
 201 int remote_find_tracking(struct remote *remote, struct refspec *refspec);
 202
 203 struct branch {
 204         const char *name;
 205         const char *refname;
 206
 207         const char *remote_name;
 208         const char *pushremote_name;
 209
 210         const char **merge_name;
 211         struct refspec **merge;
 212         int merge_nr;
 213         int merge_alloc;
 214
 215         const char *push_tracking_ref;
 216 };
 217
 218 struct branch *branch_get(const char *name);
 219 const char *remote_for_branch(struct branch *branch, int *explicit);
 220 const char *pushremote_for_branch(struct branch *branch, int *explicit);
 221
 222 int branch_has_merge_config(struct branch *branch);
 223 int branch_merge_matches(struct branch *, int n, const char *);
 224
 225 /**
 226  * Return the fully-qualified refname of the tracking branch for `branch`.
 227  * I.e., what "branch@{upstream}" would give you. Returns NULL if no
 228  * upstream is defined.
 229  *
 230  * If `err` is not NULL and no upstream is defined, a more specific error
 231  * message is recorded there (if the function does not return NULL, then
 232  * `err` is not touched).
 233  */
 234 const char *branch_get_upstream(struct branch *branch, struct strbuf *err);
 235
 236 /**
 237  * Return the tracking branch that corresponds to the ref we would push to
 238  * given a bare `git push` while `branch` is checked out.
 239  *
 240  * The return value and `err` conventions match those of `branch_get_upstream`.
 241  */
 242 const char *branch_get_push(struct branch *branch, struct strbuf *err);
 243
 244 /* Flags to match_refs. */
 245 enum match_refs_flags {
 246         MATCH_REFS_NONE         = 0,
 247         MATCH_REFS_ALL          = (1 << 0),
 248         MATCH_REFS_MIRROR       = (1 << 1),
 249         MATCH_REFS_PRUNE        = (1 << 2),
 250         MATCH_REFS_FOLLOW_TAGS  = (1 << 3)
 251 };
 252
 253 /* Reporting of tracking info */
 254 int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
 255                        const char **upstream_name);
 256 int format_tracking_info(struct branch *branch, struct strbuf *sb);
 257
 258 struct ref *get_local_heads(void);
 259 /*
 260  * Find refs from a list which are likely to be pointed to by the given HEAD
 261  * ref. If 'all' is false, returns the most likely ref; otherwise, returns a
 262  * list of all candidate refs. If no match is found (or 'head' is NULL),
 263  * returns NULL. All returns are newly allocated and should be freed.
 264  */
 265 struct ref *guess_remote_head(const struct ref *head,
 266                               const struct ref *refs,
 267                               int all);
 268
 269 /* Return refs which no longer exist on remote */
 270 struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map);
 271
 272 /*
 273  * Compare-and-swap
 274  */
 275 #define CAS_OPT_NAME "force-with-lease"
 276
 277 struct push_cas_option {
 278         unsigned use_tracking_for_rest:1;
 279         struct push_cas {
 280                 unsigned char expect[20];
 281                 unsigned use_tracking:1;
 282                 char *refname;
 283         } *entry;
 284         int nr;
 285         int alloc;
 286 };
 287
 288 extern int parseopt_push_cas_option(const struct option *, const char *arg, int unset);
 289 extern int parse_push_cas_option(struct push_cas_option *, const char *arg, int unset);
 290
 291 extern int is_empty_cas(const struct push_cas_option *);
 292 void apply_push_cas(struct push_cas_option *, struct remote *, struct ref *);
 293
 294 #endif