transport.h

   1 #ifndef TRANSPORT_H
   2 #define TRANSPORT_H
   3
   4 #include "cache.h"
   5 #include "run-command.h"
   6 #include "remote.h"
   7 #include "list-objects-filter-options.h"
   8
   9 struct string_list;
  10
  11 struct git_transport_options {
  12         unsigned thin : 1;
  13         unsigned keep : 1;
  14         unsigned followtags : 1;
  15         unsigned check_self_contained_and_connected : 1;
  16         unsigned self_contained_and_connected : 1;
  17         unsigned update_shallow : 1;
  18         unsigned deepen_relative : 1;
  19         unsigned from_promisor : 1;
  20         unsigned no_dependents : 1;
  21         int depth;
  22         const char *deepen_since;
  23         const struct string_list *deepen_not;
  24         const char *uploadpack;
  25         const char *receivepack;
  26         struct push_cas_option *cas;
  27         struct list_objects_filter_options filter_options;
  28 };
  29
  30 enum transport_family {
  31         TRANSPORT_FAMILY_ALL = 0,
  32         TRANSPORT_FAMILY_IPV4,
  33         TRANSPORT_FAMILY_IPV6
  34 };
  35
  36 struct transport {
  37         const struct transport_vtable *vtable;
  38
  39         struct remote *remote;
  40         const char *url;
  41         void *data;
  42         const struct ref *remote_refs;
  43
  44         /**
  45          * Indicates whether we already called get_refs_list(); set by
  46          * transport.c::transport_get_remote_refs().
  47          */
  48         unsigned got_remote_refs : 1;
  49
  50         /*
  51          * Transports that call take-over destroys the data specific to
  52          * the transport type while doing so, and cannot be reused.
  53          */
  54         unsigned cannot_reuse : 1;
  55
  56         /*
  57          * A hint from caller that it will be performing a clone, not
  58          * normal fetch. IOW the repository is guaranteed empty.
  59          */
  60         unsigned cloning : 1;
  61
  62         /*
  63          * Indicates that the transport is connected via a half-duplex
  64          * connection and should operate in stateless-rpc mode.
  65          */
  66         unsigned stateless_rpc : 1;
  67
  68         /*
  69          * These strings will be passed to the {pre, post}-receive hook,
  70          * on the remote side, if both sides support the push options capability.
  71          */
  72         const struct string_list *push_options;
  73
  74         char *pack_lockfile;
  75         signed verbose : 3;
  76         /**
  77          * Transports should not set this directly, and should use this
  78          * value without having to check isatty(2), -q/--quiet
  79          * (transport->verbose < 0), etc. - checking has already been done
  80          * in transport_set_verbosity().
  81          **/
  82         unsigned progress : 1;
  83         /*
  84          * If transport is at least potentially smart, this points to
  85          * git_transport_options structure to use in case transport
  86          * actually turns out to be smart.
  87          */
  88         struct git_transport_options *smart_options;
  89
  90         enum transport_family family;
  91 };
  92
  93 #define TRANSPORT_PUSH_ALL                      (1<<0)
  94 #define TRANSPORT_PUSH_FORCE                    (1<<1)
  95 #define TRANSPORT_PUSH_DRY_RUN                  (1<<2)
  96 #define TRANSPORT_PUSH_MIRROR                   (1<<3)
  97 #define TRANSPORT_PUSH_PORCELAIN                (1<<4)
  98 #define TRANSPORT_PUSH_SET_UPSTREAM             (1<<5)
  99 #define TRANSPORT_RECURSE_SUBMODULES_CHECK      (1<<6)
 100 #define TRANSPORT_PUSH_PRUNE                    (1<<7)
 101 #define TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND  (1<<8)
 102 #define TRANSPORT_PUSH_NO_HOOK                  (1<<9)
 103 #define TRANSPORT_PUSH_FOLLOW_TAGS              (1<<10)
 104 #define TRANSPORT_PUSH_CERT_ALWAYS              (1<<11)
 105 #define TRANSPORT_PUSH_CERT_IF_ASKED            (1<<12)
 106 #define TRANSPORT_PUSH_ATOMIC                   (1<<13)
 107 #define TRANSPORT_PUSH_OPTIONS                  (1<<14)
 108 #define TRANSPORT_RECURSE_SUBMODULES_ONLY       (1<<15)
 109
 110 extern int transport_summary_width(const struct ref *refs);
 111
 112 /* Returns a transport suitable for the url */
 113 struct transport *transport_get(struct remote *, const char *);
 114
 115 /*
 116  * Check whether a transport is allowed by the environment.
 117  *
 118  * Type should generally be the URL scheme, as described in
 119  * Documentation/git.txt
 120  *
 121  * from_user specifies if the transport was given by the user.  If unknown pass
 122  * a -1 to read from the environment to determine if the transport was given by
 123  * the user.
 124  *
 125  */
 126 int is_transport_allowed(const char *type, int from_user);
 127
 128 /*
 129  * Check whether a transport is allowed by the environment,
 130  * and die otherwise.
 131  */
 132 void transport_check_allowed(const char *type);
 133
 134 /* Transport options which apply to git:// and scp-style URLs */
 135
 136 /* The program to use on the remote side to send a pack */
 137 #define TRANS_OPT_UPLOADPACK "uploadpack"
 138
 139 /* The program to use on the remote side to receive a pack */
 140 #define TRANS_OPT_RECEIVEPACK "receivepack"
 141
 142 /* Transfer the data as a thin pack if not null */
 143 #define TRANS_OPT_THIN "thin"
 144
 145 /* Check the current value of the remote ref */
 146 #define TRANS_OPT_CAS "cas"
 147
 148 /* Keep the pack that was transferred if not null */
 149 #define TRANS_OPT_KEEP "keep"
 150
 151 /* Limit the depth of the fetch if not null */
 152 #define TRANS_OPT_DEPTH "depth"
 153
 154 /* Limit the depth of the fetch based on time if not null */
 155 #define TRANS_OPT_DEEPEN_SINCE "deepen-since"
 156
 157 /* Limit the depth of the fetch based on revs if not null */
 158 #define TRANS_OPT_DEEPEN_NOT "deepen-not"
 159
 160 /* Limit the deepen of the fetch if not null */
 161 #define TRANS_OPT_DEEPEN_RELATIVE "deepen-relative"
 162
 163 /* Aggressively fetch annotated tags if possible */
 164 #define TRANS_OPT_FOLLOWTAGS "followtags"
 165
 166 /* Accept refs that may update .git/shallow without --depth */
 167 #define TRANS_OPT_UPDATE_SHALLOW "updateshallow"
 168
 169 /* Send push certificates */
 170 #define TRANS_OPT_PUSH_CERT "pushcert"
 171
 172 /* Indicate that these objects are being fetched by a promisor */
 173 #define TRANS_OPT_FROM_PROMISOR "from-promisor"
 174
 175 /*
 176  * Indicate that only the objects wanted need to be fetched, not their
 177  * dependents
 178  */
 179 #define TRANS_OPT_NO_DEPENDENTS "no-dependents"
 180
 181 /* Filter objects for partial clone and fetch */
 182 #define TRANS_OPT_LIST_OBJECTS_FILTER "filter"
 183
 184 /**
 185  * Returns 0 if the option was used, non-zero otherwise. Prints a
 186  * message to stderr if the option is not used.
 187  **/
 188 int transport_set_option(struct transport *transport, const char *name,
 189                          const char *value);
 190 void transport_set_verbosity(struct transport *transport, int verbosity,
 191         int force_progress);
 192
 193 #define REJECT_NON_FF_HEAD     0x01
 194 #define REJECT_NON_FF_OTHER    0x02
 195 #define REJECT_ALREADY_EXISTS  0x04
 196 #define REJECT_FETCH_FIRST     0x08
 197 #define REJECT_NEEDS_FORCE     0x10
 198
 199 int transport_push(struct transport *connection,
 200                    int refspec_nr, const char **refspec, int flags,
 201                    unsigned int * reject_reasons);
 202
 203 /*
 204  * Retrieve refs from a remote.
 205  *
 206  * Optionally a list of ref prefixes can be provided which can be sent to the
 207  * server (when communicating using protocol v2) to enable it to limit the ref
 208  * advertisement.  Since ref filtering is done on the server's end (and only
 209  * when using protocol v2), this can return refs which don't match the provided
 210  * ref_prefixes.
 211  */
 212 const struct ref *transport_get_remote_refs(struct transport *transport,
 213                                             const struct argv_array *ref_prefixes);
 214
 215 int transport_fetch_refs(struct transport *transport, struct ref *refs);
 216 void transport_unlock_pack(struct transport *transport);
 217 int transport_disconnect(struct transport *transport);
 218 char *transport_anonymize_url(const char *url);
 219 void transport_take_over(struct transport *transport,
 220                          struct child_process *child);
 221
 222 int transport_connect(struct transport *transport, const char *name,
 223                       const char *exec, int fd[2]);
 224
 225 /* Transport methods defined outside transport.c */
 226 int transport_helper_init(struct transport *transport, const char *name);
 227 int bidirectional_transfer_loop(int input, int output);
 228
 229 /* common methods used by transport.c and builtin/send-pack.c */
 230 void transport_verify_remote_names(int nr_heads, const char **heads);
 231
 232 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose);
 233
 234 int transport_refs_pushed(struct ref *ref);
 235
 236 void transport_print_push_status(const char *dest, struct ref *refs,
 237                   int verbose, int porcelain, unsigned int *reject_reasons);
 238
 239 typedef void alternate_ref_fn(const char *refname, const struct object_id *oid, void *);
 240 extern void for_each_alternate_ref(alternate_ref_fn, void *);
 241 #endif