remote.h

   1 #ifndef REMOTE_H
   2 #define REMOTE_H
   3
   4 #include "parse-options.h"
   5
   6 enum {
   7         REMOTE_CONFIG,
   8         REMOTE_REMOTES,
   9         REMOTE_BRANCHES
  10 };
  11
  12 struct remote {
  13         const char *name;
  14         int origin;
  15
  16         const char *foreign_vcs;
  17
  18         const char **url;
  19         int url_nr;
  20         int url_alloc;
  21
  22         const char **pushurl;
  23         int pushurl_nr;
  24         int pushurl_alloc;
  25
  26         const char **push_refspec;
  27         struct refspec *push;
  28         int push_refspec_nr;
  29         int push_refspec_alloc;
  30
  31         const char **fetch_refspec;
  32         struct refspec *fetch;
  33         int fetch_refspec_nr;
  34         int fetch_refspec_alloc;
  35
  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;
  43         int skip_default_update;
  44         int mirror;
  45         int prune;
  46
  47         const char *receivepack;
  48         const char *uploadpack;
  49
  50         /*
  51          * for curl remotes only
  52          */
  53         char *http_proxy;
  54 };
  55
  56 struct remote *remote_get(const char *name);
  57 struct remote *pushremote_get(const char *name);
  58 int remote_is_configured(const char *name);
  59
  60 typedef int each_remote_fn(struct remote *remote, void *priv);
  61 int for_each_remote(each_remote_fn fn, void *priv);
  62
  63 int remote_has_url(struct remote *remote, const char *url);
  64
  65 struct refspec {
  66         unsigned force : 1;
  67         unsigned pattern : 1;
  68         unsigned matching : 1;
  69         unsigned exact_sha1 : 1;
  70
  71         char *src;
  72         char *dst;
  73 };
  74
  75 extern const struct refspec *tag_refspec;
  76
  77 struct ref {
  78         struct ref *next;
  79         unsigned char old_sha1[20];
  80         unsigned char new_sha1[20];
  81         unsigned char old_sha1_expect[20]; /* used by expect-old */
  82         char *symref;
  83         unsigned int
  84                 force:1,
  85                 forced_update:1,
  86                 expect_old_sha1:1,
  87                 expect_old_no_trackback:1,
  88                 deletion:1,
  89                 matched:1;
  90
  91         /*
  92          * Order is important here, as we write to FETCH_HEAD
  93          * in numeric order. And the default NOT_FOR_MERGE
  94          * should be 0, so that xcalloc'd structures get it
  95          * by default.
  96          */
  97         enum {
  98                 FETCH_HEAD_MERGE = -1,
  99                 FETCH_HEAD_NOT_FOR_MERGE = 0,
 100                 FETCH_HEAD_IGNORE = 1
 101         } fetch_head_status;
 102
 103         enum {
 104                 REF_STATUS_NONE = 0,
 105                 REF_STATUS_OK,
 106                 REF_STATUS_REJECT_NONFASTFORWARD,
 107                 REF_STATUS_REJECT_ALREADY_EXISTS,
 108                 REF_STATUS_REJECT_NODELETE,
 109                 REF_STATUS_REJECT_FETCH_FIRST,
 110                 REF_STATUS_REJECT_NEEDS_FORCE,
 111                 REF_STATUS_REJECT_STALE,
 112                 REF_STATUS_UPTODATE,
 113                 REF_STATUS_REMOTE_REJECT,
 114                 REF_STATUS_EXPECTING_REPORT
 115         } status;
 116         char *remote_status;
 117         struct ref *peer_ref; /* when renaming */
 118         char name[FLEX_ARRAY]; /* more */
 119 };
 120
 121 #define REF_NORMAL      (1u << 0)
 122 #define REF_HEADS       (1u << 1)
 123 #define REF_TAGS        (1u << 2)
 124
 125 extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
 126
 127 struct ref *alloc_ref(const char *name);
 128 struct ref *copy_ref(const struct ref *ref);
 129 struct ref *copy_ref_list(const struct ref *ref);
 130 void sort_ref_list(struct ref **, int (*cmp)(const void *, const void *));
 131 int ref_compare_name(const void *, const void *);
 132
 133 int check_ref_type(const struct ref *ref, int flags);
 134
 135 /*
 136  * Frees the entire list and peers of elements.
 137  */
 138 void free_refs(struct ref *ref);
 139
 140 struct extra_have_objects {
 141         int nr, alloc;
 142         unsigned char (*array)[20];
 143 };
 144 extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
 145                                      struct ref **list, unsigned int flags,
 146                                      struct extra_have_objects *);
 147
 148 int resolve_remote_symref(struct ref *ref, struct ref *list);
 149 int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1);
 150
 151 /*
 152  * Removes and frees any duplicate refs in the map.
 153  */
 154 void ref_remove_duplicates(struct ref *ref_map);
 155
 156 int valid_fetch_refspec(const char *refspec);
 157 struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec);
 158
 159 void free_refspec(int nr_refspec, struct refspec *refspec);
 160
 161 char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
 162                      const char *name);
 163
 164 int match_push_refs(struct ref *src, struct ref **dst,
 165                     int nr_refspec, const char **refspec, int all);
 166 void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
 167         int force_update);
 168
 169 /*
 170  * Given a list of the remote refs and the specification of things to
 171  * fetch, makes a (separate) list of the refs to fetch and the local
 172  * refs to store into.
 173  *
 174  * *tail is the pointer to the tail pointer of the list of results
 175  * beforehand, and will be set to the tail pointer of the list of
 176  * results afterward.
 177  *
 178  * missing_ok is usually false, but when we are adding branch.$name.merge
 179  * it is Ok if the branch is not at the remote anymore.
 180  */
 181 int get_fetch_map(const struct ref *remote_refs, const struct refspec *refspec,
 182                   struct ref ***tail, int missing_ok);
 183
 184 struct ref *get_remote_ref(const struct ref *remote_refs, const char *name);
 185
 186 /*
 187  * For the given remote, reads the refspec's src and sets the other fields.
 188  */
 189 int remote_find_tracking(struct remote *remote, struct refspec *refspec);
 190
 191 struct branch {
 192         const char *name;
 193         const char *refname;
 194
 195         const char *remote_name;
 196         struct remote *remote;
 197
 198         const char **merge_name;
 199         struct refspec **merge;
 200         int merge_nr;
 201         int merge_alloc;
 202 };
 203
 204 struct branch *branch_get(const char *name);
 205
 206 int branch_has_merge_config(struct branch *branch);
 207 int branch_merge_matches(struct branch *, int n, const char *);
 208
 209 /* Flags to match_refs. */
 210 enum match_refs_flags {
 211         MATCH_REFS_NONE         = 0,
 212         MATCH_REFS_ALL          = (1 << 0),
 213         MATCH_REFS_MIRROR       = (1 << 1),
 214         MATCH_REFS_PRUNE        = (1 << 2),
 215         MATCH_REFS_FOLLOW_TAGS  = (1 << 3)
 216 };
 217
 218 /* Reporting of tracking info */
 219 int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs);
 220 int format_tracking_info(struct branch *branch, struct strbuf *sb);
 221
 222 struct ref *get_local_heads(void);
 223 /*
 224  * Find refs from a list which are likely to be pointed to by the given HEAD
 225  * ref. If 'all' is false, returns the most likely ref; otherwise, returns a
 226  * list of all candidate refs. If no match is found (or 'head' is NULL),
 227  * returns NULL. All returns are newly allocated and should be freed.
 228  */
 229 struct ref *guess_remote_head(const struct ref *head,
 230                               const struct ref *refs,
 231                               int all);
 232
 233 /* Return refs which no longer exist on remote */
 234 struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map);
 235
 236 /*
 237  * Compare-and-swap
 238  */
 239 #define CAS_OPT_NAME "force-with-lease"
 240
 241 struct push_cas_option {
 242         unsigned use_tracking_for_rest:1;
 243         struct push_cas {
 244                 unsigned char expect[20];
 245                 unsigned use_tracking:1;
 246                 char *refname;
 247         } *entry;
 248         int nr;
 249         int alloc;
 250 };
 251
 252 extern int parseopt_push_cas_option(const struct option *, const char *arg, int unset);
 253 extern int parse_push_cas_option(struct push_cas_option *, const char *arg, int unset);
 254 extern void clear_cas_option(struct push_cas_option *);
 255
 256 extern int is_empty_cas(const struct push_cas_option *);
 257 void apply_push_cas(struct push_cas_option *, struct remote *, struct ref *);
 258
 259 #endif