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![Junio C Hamano](/assets/img/avatar_default.png)
Fix in passing custom args from "git clone" to "upload-pack" on the other side. * jv/upload-pack-filter-spec-quotefix: t5544: clarify 'hook works with partial clone' test upload-pack.c: fix filter spec quoting bug
1758 lines
45 KiB
C
1758 lines
45 KiB
C
#include "cache.h"
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#include "config.h"
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#include "refs.h"
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#include "pkt-line.h"
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#include "sideband.h"
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#include "repository.h"
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#include "object-store.h"
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#include "tag.h"
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#include "object.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "list-objects.h"
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#include "list-objects-filter.h"
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#include "list-objects-filter-options.h"
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#include "run-command.h"
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#include "connect.h"
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#include "sigchain.h"
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#include "version.h"
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#include "string-list.h"
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#include "strvec.h"
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#include "prio-queue.h"
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#include "protocol.h"
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#include "quote.h"
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#include "upload-pack.h"
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#include "serve.h"
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#include "commit-graph.h"
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#include "commit-reach.h"
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#include "shallow.h"
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/* Remember to update object flag allocation in object.h */
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#define THEY_HAVE (1u << 11)
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#define OUR_REF (1u << 12)
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#define WANTED (1u << 13)
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#define COMMON_KNOWN (1u << 14)
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#define SHALLOW (1u << 16)
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#define NOT_SHALLOW (1u << 17)
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#define CLIENT_SHALLOW (1u << 18)
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#define HIDDEN_REF (1u << 19)
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#define ALL_FLAGS (THEY_HAVE | OUR_REF | WANTED | COMMON_KNOWN | SHALLOW | \
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NOT_SHALLOW | CLIENT_SHALLOW | HIDDEN_REF)
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/* Enum for allowed unadvertised object request (UOR) */
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enum allow_uor {
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/* Allow specifying sha1 if it is a ref tip. */
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ALLOW_TIP_SHA1 = 0x01,
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/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
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ALLOW_REACHABLE_SHA1 = 0x02,
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/* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */
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ALLOW_ANY_SHA1 = 0x07
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};
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/*
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* Please annotate, and if possible group together, fields used only
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* for protocol v0 or only for protocol v2.
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*/
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struct upload_pack_data {
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struct string_list symref; /* v0 only */
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struct object_array want_obj;
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struct object_array have_obj;
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struct oid_array haves; /* v2 only */
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struct string_list wanted_refs; /* v2 only */
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struct object_array shallows;
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struct string_list deepen_not;
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struct object_array extra_edge_obj;
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int depth;
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timestamp_t deepen_since;
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int deepen_rev_list;
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int deepen_relative;
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int keepalive;
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int shallow_nr;
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timestamp_t oldest_have;
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unsigned int timeout; /* v0 only */
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enum {
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NO_MULTI_ACK = 0,
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MULTI_ACK = 1,
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MULTI_ACK_DETAILED = 2
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} multi_ack; /* v0 only */
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/* 0 for no sideband, otherwise DEFAULT_PACKET_MAX or LARGE_PACKET_MAX */
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int use_sideband;
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struct string_list uri_protocols;
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enum allow_uor allow_uor;
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struct list_objects_filter_options filter_options;
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struct string_list allowed_filters;
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struct packet_writer writer;
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const char *pack_objects_hook;
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unsigned stateless_rpc : 1; /* v0 only */
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unsigned no_done : 1; /* v0 only */
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unsigned daemon_mode : 1; /* v0 only */
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unsigned filter_capability_requested : 1; /* v0 only */
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unsigned use_thin_pack : 1;
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unsigned use_ofs_delta : 1;
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unsigned no_progress : 1;
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unsigned use_include_tag : 1;
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unsigned allow_filter : 1;
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unsigned allow_filter_fallback : 1;
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unsigned long tree_filter_max_depth;
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unsigned done : 1; /* v2 only */
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unsigned allow_ref_in_want : 1; /* v2 only */
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unsigned allow_sideband_all : 1; /* v2 only */
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unsigned advertise_sid : 1;
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};
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static void upload_pack_data_init(struct upload_pack_data *data)
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{
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struct string_list symref = STRING_LIST_INIT_DUP;
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struct string_list wanted_refs = STRING_LIST_INIT_DUP;
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struct object_array want_obj = OBJECT_ARRAY_INIT;
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struct object_array have_obj = OBJECT_ARRAY_INIT;
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struct oid_array haves = OID_ARRAY_INIT;
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struct object_array shallows = OBJECT_ARRAY_INIT;
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struct string_list deepen_not = STRING_LIST_INIT_DUP;
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struct string_list uri_protocols = STRING_LIST_INIT_DUP;
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struct object_array extra_edge_obj = OBJECT_ARRAY_INIT;
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struct string_list allowed_filters = STRING_LIST_INIT_DUP;
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memset(data, 0, sizeof(*data));
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data->symref = symref;
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data->wanted_refs = wanted_refs;
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data->want_obj = want_obj;
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data->have_obj = have_obj;
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data->haves = haves;
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data->shallows = shallows;
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data->deepen_not = deepen_not;
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data->uri_protocols = uri_protocols;
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data->extra_edge_obj = extra_edge_obj;
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data->allowed_filters = allowed_filters;
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data->allow_filter_fallback = 1;
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data->tree_filter_max_depth = ULONG_MAX;
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packet_writer_init(&data->writer, 1);
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data->keepalive = 5;
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data->advertise_sid = 0;
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}
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static void upload_pack_data_clear(struct upload_pack_data *data)
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{
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string_list_clear(&data->symref, 1);
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string_list_clear(&data->wanted_refs, 1);
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object_array_clear(&data->want_obj);
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object_array_clear(&data->have_obj);
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oid_array_clear(&data->haves);
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object_array_clear(&data->shallows);
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string_list_clear(&data->deepen_not, 0);
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object_array_clear(&data->extra_edge_obj);
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list_objects_filter_release(&data->filter_options);
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string_list_clear(&data->allowed_filters, 0);
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free((char *)data->pack_objects_hook);
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}
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static void reset_timeout(unsigned int timeout)
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{
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alarm(timeout);
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}
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static void send_client_data(int fd, const char *data, ssize_t sz,
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int use_sideband)
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{
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if (use_sideband) {
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send_sideband(1, fd, data, sz, use_sideband);
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return;
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}
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if (fd == 3)
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/* emergency quit */
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fd = 2;
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if (fd == 2) {
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/* XXX: are we happy to lose stuff here? */
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xwrite(fd, data, sz);
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return;
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}
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write_or_die(fd, data, sz);
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}
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static int write_one_shallow(const struct commit_graft *graft, void *cb_data)
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{
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FILE *fp = cb_data;
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if (graft->nr_parent == -1)
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fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid));
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return 0;
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}
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struct output_state {
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char buffer[8193];
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int used;
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unsigned packfile_uris_started : 1;
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unsigned packfile_started : 1;
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};
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static int relay_pack_data(int pack_objects_out, struct output_state *os,
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int use_sideband, int write_packfile_line)
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{
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/*
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* We keep the last byte to ourselves
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* in case we detect broken rev-list, so that we
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* can leave the stream corrupted. This is
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* unfortunate -- unpack-objects would happily
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* accept a valid packdata with trailing garbage,
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* so appending garbage after we pass all the
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* pack data is not good enough to signal
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* breakage to downstream.
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*/
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ssize_t readsz;
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readsz = xread(pack_objects_out, os->buffer + os->used,
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sizeof(os->buffer) - os->used);
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if (readsz < 0) {
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return readsz;
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}
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os->used += readsz;
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while (!os->packfile_started) {
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char *p;
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if (os->used >= 4 && !memcmp(os->buffer, "PACK", 4)) {
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os->packfile_started = 1;
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if (write_packfile_line) {
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if (os->packfile_uris_started)
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packet_delim(1);
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packet_write_fmt(1, "\1packfile\n");
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}
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break;
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}
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if ((p = memchr(os->buffer, '\n', os->used))) {
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if (!os->packfile_uris_started) {
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os->packfile_uris_started = 1;
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if (!write_packfile_line)
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BUG("packfile_uris requires sideband-all");
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packet_write_fmt(1, "\1packfile-uris\n");
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}
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*p = '\0';
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packet_write_fmt(1, "\1%s\n", os->buffer);
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os->used -= p - os->buffer + 1;
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memmove(os->buffer, p + 1, os->used);
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} else {
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/*
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* Incomplete line.
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*/
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return readsz;
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}
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}
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if (os->used > 1) {
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send_client_data(1, os->buffer, os->used - 1, use_sideband);
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os->buffer[0] = os->buffer[os->used - 1];
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os->used = 1;
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} else {
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send_client_data(1, os->buffer, os->used, use_sideband);
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os->used = 0;
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}
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return readsz;
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}
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static void create_pack_file(struct upload_pack_data *pack_data,
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const struct string_list *uri_protocols)
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{
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struct child_process pack_objects = CHILD_PROCESS_INIT;
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struct output_state output_state = { { 0 } };
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char progress[128];
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char abort_msg[] = "aborting due to possible repository "
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"corruption on the remote side.";
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ssize_t sz;
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int i;
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FILE *pipe_fd;
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if (!pack_data->pack_objects_hook)
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pack_objects.git_cmd = 1;
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else {
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strvec_push(&pack_objects.args, pack_data->pack_objects_hook);
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strvec_push(&pack_objects.args, "git");
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pack_objects.use_shell = 1;
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}
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if (pack_data->shallow_nr) {
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strvec_push(&pack_objects.args, "--shallow-file");
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strvec_push(&pack_objects.args, "");
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}
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strvec_push(&pack_objects.args, "pack-objects");
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strvec_push(&pack_objects.args, "--revs");
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if (pack_data->use_thin_pack)
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strvec_push(&pack_objects.args, "--thin");
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strvec_push(&pack_objects.args, "--stdout");
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if (pack_data->shallow_nr)
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strvec_push(&pack_objects.args, "--shallow");
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if (!pack_data->no_progress)
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strvec_push(&pack_objects.args, "--progress");
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if (pack_data->use_ofs_delta)
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strvec_push(&pack_objects.args, "--delta-base-offset");
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if (pack_data->use_include_tag)
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strvec_push(&pack_objects.args, "--include-tag");
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if (pack_data->filter_options.choice) {
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const char *spec =
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expand_list_objects_filter_spec(&pack_data->filter_options);
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strvec_pushf(&pack_objects.args, "--filter=%s", spec);
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}
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if (uri_protocols) {
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for (i = 0; i < uri_protocols->nr; i++)
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strvec_pushf(&pack_objects.args, "--uri-protocol=%s",
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uri_protocols->items[i].string);
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}
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pack_objects.in = -1;
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pack_objects.out = -1;
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pack_objects.err = -1;
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pack_objects.clean_on_exit = 1;
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if (start_command(&pack_objects))
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die("git upload-pack: unable to fork git-pack-objects");
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pipe_fd = xfdopen(pack_objects.in, "w");
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if (pack_data->shallow_nr)
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for_each_commit_graft(write_one_shallow, pipe_fd);
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for (i = 0; i < pack_data->want_obj.nr; i++)
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fprintf(pipe_fd, "%s\n",
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oid_to_hex(&pack_data->want_obj.objects[i].item->oid));
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fprintf(pipe_fd, "--not\n");
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for (i = 0; i < pack_data->have_obj.nr; i++)
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fprintf(pipe_fd, "%s\n",
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oid_to_hex(&pack_data->have_obj.objects[i].item->oid));
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for (i = 0; i < pack_data->extra_edge_obj.nr; i++)
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fprintf(pipe_fd, "%s\n",
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oid_to_hex(&pack_data->extra_edge_obj.objects[i].item->oid));
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fprintf(pipe_fd, "\n");
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fflush(pipe_fd);
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fclose(pipe_fd);
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/* We read from pack_objects.err to capture stderr output for
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* progress bar, and pack_objects.out to capture the pack data.
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*/
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while (1) {
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struct pollfd pfd[2];
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int pe, pu, pollsize, polltimeout;
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int ret;
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reset_timeout(pack_data->timeout);
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pollsize = 0;
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pe = pu = -1;
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if (0 <= pack_objects.out) {
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pfd[pollsize].fd = pack_objects.out;
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pfd[pollsize].events = POLLIN;
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pu = pollsize;
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pollsize++;
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}
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if (0 <= pack_objects.err) {
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pfd[pollsize].fd = pack_objects.err;
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pfd[pollsize].events = POLLIN;
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pe = pollsize;
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pollsize++;
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}
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if (!pollsize)
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break;
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polltimeout = pack_data->keepalive < 0
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? -1
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: 1000 * pack_data->keepalive;
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ret = poll(pfd, pollsize, polltimeout);
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if (ret < 0) {
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if (errno != EINTR) {
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error_errno("poll failed, resuming");
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sleep(1);
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}
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continue;
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}
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if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
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/* Status ready; we ship that in the side-band
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* or dump to the standard error.
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*/
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sz = xread(pack_objects.err, progress,
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sizeof(progress));
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if (0 < sz)
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send_client_data(2, progress, sz,
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pack_data->use_sideband);
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else if (sz == 0) {
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close(pack_objects.err);
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pack_objects.err = -1;
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}
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else
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goto fail;
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/* give priority to status messages */
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continue;
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}
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if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
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int result = relay_pack_data(pack_objects.out,
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&output_state,
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pack_data->use_sideband,
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!!uri_protocols);
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if (result == 0) {
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close(pack_objects.out);
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pack_objects.out = -1;
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} else if (result < 0) {
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goto fail;
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}
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}
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/*
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* We hit the keepalive timeout without saying anything; send
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* an empty message on the data sideband just to let the other
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* side know we're still working on it, but don't have any data
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* yet.
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*
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* If we don't have a sideband channel, there's no room in the
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* protocol to say anything, so those clients are just out of
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* luck.
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*/
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if (!ret && pack_data->use_sideband) {
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static const char buf[] = "0005\1";
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write_or_die(1, buf, 5);
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}
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}
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if (finish_command(&pack_objects)) {
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error("git upload-pack: git-pack-objects died with error.");
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goto fail;
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}
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|
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/* flush the data */
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if (output_state.used > 0) {
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send_client_data(1, output_state.buffer, output_state.used,
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pack_data->use_sideband);
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fprintf(stderr, "flushed.\n");
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}
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if (pack_data->use_sideband)
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packet_flush(1);
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return;
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fail:
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send_client_data(3, abort_msg, sizeof(abort_msg),
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pack_data->use_sideband);
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die("git upload-pack: %s", abort_msg);
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}
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static int do_got_oid(struct upload_pack_data *data, const struct object_id *oid)
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{
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int we_knew_they_have = 0;
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struct object *o = parse_object(the_repository, oid);
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if (!o)
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die("oops (%s)", oid_to_hex(oid));
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if (o->type == OBJ_COMMIT) {
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struct commit_list *parents;
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struct commit *commit = (struct commit *)o;
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if (o->flags & THEY_HAVE)
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we_knew_they_have = 1;
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else
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o->flags |= THEY_HAVE;
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if (!data->oldest_have || (commit->date < data->oldest_have))
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data->oldest_have = commit->date;
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for (parents = commit->parents;
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parents;
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parents = parents->next)
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parents->item->object.flags |= THEY_HAVE;
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}
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if (!we_knew_they_have) {
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add_object_array(o, NULL, &data->have_obj);
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return 1;
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}
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return 0;
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}
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static int got_oid(struct upload_pack_data *data,
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const char *hex, struct object_id *oid)
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{
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if (get_oid_hex(hex, oid))
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die("git upload-pack: expected SHA1 object, got '%s'", hex);
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if (!has_object_file_with_flags(oid,
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OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT))
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return -1;
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return do_got_oid(data, oid);
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}
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|
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static int ok_to_give_up(struct upload_pack_data *data)
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|
{
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|
uint32_t min_generation = GENERATION_NUMBER_ZERO;
|
|
|
|
if (!data->have_obj.nr)
|
|
return 0;
|
|
|
|
return can_all_from_reach_with_flag(&data->want_obj, THEY_HAVE,
|
|
COMMON_KNOWN, data->oldest_have,
|
|
min_generation);
|
|
}
|
|
|
|
static int get_common_commits(struct upload_pack_data *data,
|
|
struct packet_reader *reader)
|
|
{
|
|
struct object_id oid;
|
|
char last_hex[GIT_MAX_HEXSZ + 1];
|
|
int got_common = 0;
|
|
int got_other = 0;
|
|
int sent_ready = 0;
|
|
|
|
save_commit_buffer = 0;
|
|
|
|
for (;;) {
|
|
const char *arg;
|
|
|
|
reset_timeout(data->timeout);
|
|
|
|
if (packet_reader_read(reader) != PACKET_READ_NORMAL) {
|
|
if (data->multi_ack == MULTI_ACK_DETAILED
|
|
&& got_common
|
|
&& !got_other
|
|
&& ok_to_give_up(data)) {
|
|
sent_ready = 1;
|
|
packet_write_fmt(1, "ACK %s ready\n", last_hex);
|
|
}
|
|
if (data->have_obj.nr == 0 || data->multi_ack)
|
|
packet_write_fmt(1, "NAK\n");
|
|
|
|
if (data->no_done && sent_ready) {
|
|
packet_write_fmt(1, "ACK %s\n", last_hex);
|
|
return 0;
|
|
}
|
|
if (data->stateless_rpc)
|
|
exit(0);
|
|
got_common = 0;
|
|
got_other = 0;
|
|
continue;
|
|
}
|
|
if (skip_prefix(reader->line, "have ", &arg)) {
|
|
switch (got_oid(data, arg, &oid)) {
|
|
case -1: /* they have what we do not */
|
|
got_other = 1;
|
|
if (data->multi_ack
|
|
&& ok_to_give_up(data)) {
|
|
const char *hex = oid_to_hex(&oid);
|
|
if (data->multi_ack == MULTI_ACK_DETAILED) {
|
|
sent_ready = 1;
|
|
packet_write_fmt(1, "ACK %s ready\n", hex);
|
|
} else
|
|
packet_write_fmt(1, "ACK %s continue\n", hex);
|
|
}
|
|
break;
|
|
default:
|
|
got_common = 1;
|
|
oid_to_hex_r(last_hex, &oid);
|
|
if (data->multi_ack == MULTI_ACK_DETAILED)
|
|
packet_write_fmt(1, "ACK %s common\n", last_hex);
|
|
else if (data->multi_ack)
|
|
packet_write_fmt(1, "ACK %s continue\n", last_hex);
|
|
else if (data->have_obj.nr == 1)
|
|
packet_write_fmt(1, "ACK %s\n", last_hex);
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (!strcmp(reader->line, "done")) {
|
|
if (data->have_obj.nr > 0) {
|
|
if (data->multi_ack)
|
|
packet_write_fmt(1, "ACK %s\n", last_hex);
|
|
return 0;
|
|
}
|
|
packet_write_fmt(1, "NAK\n");
|
|
return -1;
|
|
}
|
|
die("git upload-pack: expected SHA1 list, got '%s'", reader->line);
|
|
}
|
|
}
|
|
|
|
static int is_our_ref(struct object *o, enum allow_uor allow_uor)
|
|
{
|
|
int allow_hidden_ref = (allow_uor &
|
|
(ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
|
|
return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
|
|
}
|
|
|
|
/*
|
|
* on successful case, it's up to the caller to close cmd->out
|
|
*/
|
|
static int do_reachable_revlist(struct child_process *cmd,
|
|
struct object_array *src,
|
|
struct object_array *reachable,
|
|
enum allow_uor allow_uor)
|
|
{
|
|
static const char *argv[] = {
|
|
"rev-list", "--stdin", NULL,
|
|
};
|
|
struct object *o;
|
|
FILE *cmd_in = NULL;
|
|
int i;
|
|
|
|
cmd->argv = argv;
|
|
cmd->git_cmd = 1;
|
|
cmd->no_stderr = 1;
|
|
cmd->in = -1;
|
|
cmd->out = -1;
|
|
|
|
/*
|
|
* If the next rev-list --stdin encounters an unknown commit,
|
|
* it terminates, which will cause SIGPIPE in the write loop
|
|
* below.
|
|
*/
|
|
sigchain_push(SIGPIPE, SIG_IGN);
|
|
|
|
if (start_command(cmd))
|
|
goto error;
|
|
|
|
cmd_in = xfdopen(cmd->in, "w");
|
|
|
|
for (i = get_max_object_index(); 0 < i; ) {
|
|
o = get_indexed_object(--i);
|
|
if (!o)
|
|
continue;
|
|
if (reachable && o->type == OBJ_COMMIT)
|
|
o->flags &= ~TMP_MARK;
|
|
if (!is_our_ref(o, allow_uor))
|
|
continue;
|
|
if (fprintf(cmd_in, "^%s\n", oid_to_hex(&o->oid)) < 0)
|
|
goto error;
|
|
}
|
|
for (i = 0; i < src->nr; i++) {
|
|
o = src->objects[i].item;
|
|
if (is_our_ref(o, allow_uor)) {
|
|
if (reachable)
|
|
add_object_array(o, NULL, reachable);
|
|
continue;
|
|
}
|
|
if (reachable && o->type == OBJ_COMMIT)
|
|
o->flags |= TMP_MARK;
|
|
if (fprintf(cmd_in, "%s\n", oid_to_hex(&o->oid)) < 0)
|
|
goto error;
|
|
}
|
|
if (ferror(cmd_in) || fflush(cmd_in))
|
|
goto error;
|
|
fclose(cmd_in);
|
|
cmd->in = -1;
|
|
sigchain_pop(SIGPIPE);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
sigchain_pop(SIGPIPE);
|
|
|
|
if (cmd_in)
|
|
fclose(cmd_in);
|
|
if (cmd->out >= 0)
|
|
close(cmd->out);
|
|
return -1;
|
|
}
|
|
|
|
static int get_reachable_list(struct upload_pack_data *data,
|
|
struct object_array *reachable)
|
|
{
|
|
struct child_process cmd = CHILD_PROCESS_INIT;
|
|
int i;
|
|
struct object *o;
|
|
char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */
|
|
const unsigned hexsz = the_hash_algo->hexsz;
|
|
|
|
if (do_reachable_revlist(&cmd, &data->shallows, reachable,
|
|
data->allow_uor) < 0)
|
|
return -1;
|
|
|
|
while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) {
|
|
struct object_id oid;
|
|
const char *p;
|
|
|
|
if (parse_oid_hex(namebuf, &oid, &p) || *p != '\n')
|
|
break;
|
|
|
|
o = lookup_object(the_repository, &oid);
|
|
if (o && o->type == OBJ_COMMIT) {
|
|
o->flags &= ~TMP_MARK;
|
|
}
|
|
}
|
|
for (i = get_max_object_index(); 0 < i; i--) {
|
|
o = get_indexed_object(i - 1);
|
|
if (o && o->type == OBJ_COMMIT &&
|
|
(o->flags & TMP_MARK)) {
|
|
add_object_array(o, NULL, reachable);
|
|
o->flags &= ~TMP_MARK;
|
|
}
|
|
}
|
|
close(cmd.out);
|
|
|
|
if (finish_command(&cmd))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int has_unreachable(struct object_array *src, enum allow_uor allow_uor)
|
|
{
|
|
struct child_process cmd = CHILD_PROCESS_INIT;
|
|
char buf[1];
|
|
int i;
|
|
|
|
if (do_reachable_revlist(&cmd, src, NULL, allow_uor) < 0)
|
|
return 1;
|
|
|
|
/*
|
|
* The commits out of the rev-list are not ancestors of
|
|
* our ref.
|
|
*/
|
|
i = read_in_full(cmd.out, buf, 1);
|
|
if (i)
|
|
goto error;
|
|
close(cmd.out);
|
|
cmd.out = -1;
|
|
|
|
/*
|
|
* rev-list may have died by encountering a bad commit
|
|
* in the history, in which case we do want to bail out
|
|
* even when it showed no commit.
|
|
*/
|
|
if (finish_command(&cmd))
|
|
goto error;
|
|
|
|
/* All the non-tip ones are ancestors of what we advertised */
|
|
return 0;
|
|
|
|
error:
|
|
if (cmd.out >= 0)
|
|
close(cmd.out);
|
|
return 1;
|
|
}
|
|
|
|
static void check_non_tip(struct upload_pack_data *data)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* In the normal in-process case without
|
|
* uploadpack.allowReachableSHA1InWant,
|
|
* non-tip requests can never happen.
|
|
*/
|
|
if (!data->stateless_rpc && !(data->allow_uor & ALLOW_REACHABLE_SHA1))
|
|
goto error;
|
|
if (!has_unreachable(&data->want_obj, data->allow_uor))
|
|
/* All the non-tip ones are ancestors of what we advertised */
|
|
return;
|
|
|
|
error:
|
|
/* Pick one of them (we know there at least is one) */
|
|
for (i = 0; i < data->want_obj.nr; i++) {
|
|
struct object *o = data->want_obj.objects[i].item;
|
|
if (!is_our_ref(o, data->allow_uor)) {
|
|
packet_writer_error(&data->writer,
|
|
"upload-pack: not our ref %s",
|
|
oid_to_hex(&o->oid));
|
|
die("git upload-pack: not our ref %s",
|
|
oid_to_hex(&o->oid));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void send_shallow(struct upload_pack_data *data,
|
|
struct commit_list *result)
|
|
{
|
|
while (result) {
|
|
struct object *object = &result->item->object;
|
|
if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
|
|
packet_writer_write(&data->writer, "shallow %s",
|
|
oid_to_hex(&object->oid));
|
|
register_shallow(the_repository, &object->oid);
|
|
data->shallow_nr++;
|
|
}
|
|
result = result->next;
|
|
}
|
|
}
|
|
|
|
static void send_unshallow(struct upload_pack_data *data)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < data->shallows.nr; i++) {
|
|
struct object *object = data->shallows.objects[i].item;
|
|
if (object->flags & NOT_SHALLOW) {
|
|
struct commit_list *parents;
|
|
packet_writer_write(&data->writer, "unshallow %s",
|
|
oid_to_hex(&object->oid));
|
|
object->flags &= ~CLIENT_SHALLOW;
|
|
/*
|
|
* We want to _register_ "object" as shallow, but we
|
|
* also need to traverse object's parents to deepen a
|
|
* shallow clone. Unregister it for now so we can
|
|
* parse and add the parents to the want list, then
|
|
* re-register it.
|
|
*/
|
|
unregister_shallow(&object->oid);
|
|
object->parsed = 0;
|
|
parse_commit_or_die((struct commit *)object);
|
|
parents = ((struct commit *)object)->parents;
|
|
while (parents) {
|
|
add_object_array(&parents->item->object,
|
|
NULL, &data->want_obj);
|
|
parents = parents->next;
|
|
}
|
|
add_object_array(object, NULL, &data->extra_edge_obj);
|
|
}
|
|
/* make sure commit traversal conforms to client */
|
|
register_shallow(the_repository, &object->oid);
|
|
}
|
|
}
|
|
|
|
static int check_ref(const char *refname_full, const struct object_id *oid,
|
|
int flag, void *cb_data);
|
|
static void deepen(struct upload_pack_data *data, int depth)
|
|
{
|
|
if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) {
|
|
int i;
|
|
|
|
for (i = 0; i < data->shallows.nr; i++) {
|
|
struct object *object = data->shallows.objects[i].item;
|
|
object->flags |= NOT_SHALLOW;
|
|
}
|
|
} else if (data->deepen_relative) {
|
|
struct object_array reachable_shallows = OBJECT_ARRAY_INIT;
|
|
struct commit_list *result;
|
|
|
|
/*
|
|
* Checking for reachable shallows requires that our refs be
|
|
* marked with OUR_REF.
|
|
*/
|
|
head_ref_namespaced(check_ref, NULL);
|
|
for_each_namespaced_ref(check_ref, NULL);
|
|
|
|
get_reachable_list(data, &reachable_shallows);
|
|
result = get_shallow_commits(&reachable_shallows,
|
|
depth + 1,
|
|
SHALLOW, NOT_SHALLOW);
|
|
send_shallow(data, result);
|
|
free_commit_list(result);
|
|
object_array_clear(&reachable_shallows);
|
|
} else {
|
|
struct commit_list *result;
|
|
|
|
result = get_shallow_commits(&data->want_obj, depth,
|
|
SHALLOW, NOT_SHALLOW);
|
|
send_shallow(data, result);
|
|
free_commit_list(result);
|
|
}
|
|
|
|
send_unshallow(data);
|
|
}
|
|
|
|
static void deepen_by_rev_list(struct upload_pack_data *data,
|
|
int ac,
|
|
const char **av)
|
|
{
|
|
struct commit_list *result;
|
|
|
|
disable_commit_graph(the_repository);
|
|
result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW);
|
|
send_shallow(data, result);
|
|
free_commit_list(result);
|
|
send_unshallow(data);
|
|
}
|
|
|
|
/* Returns 1 if a shallow list is sent or 0 otherwise */
|
|
static int send_shallow_list(struct upload_pack_data *data)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (data->depth > 0 && data->deepen_rev_list)
|
|
die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together");
|
|
if (data->depth > 0) {
|
|
deepen(data, data->depth);
|
|
ret = 1;
|
|
} else if (data->deepen_rev_list) {
|
|
struct strvec av = STRVEC_INIT;
|
|
int i;
|
|
|
|
strvec_push(&av, "rev-list");
|
|
if (data->deepen_since)
|
|
strvec_pushf(&av, "--max-age=%"PRItime, data->deepen_since);
|
|
if (data->deepen_not.nr) {
|
|
strvec_push(&av, "--not");
|
|
for (i = 0; i < data->deepen_not.nr; i++) {
|
|
struct string_list_item *s = data->deepen_not.items + i;
|
|
strvec_push(&av, s->string);
|
|
}
|
|
strvec_push(&av, "--not");
|
|
}
|
|
for (i = 0; i < data->want_obj.nr; i++) {
|
|
struct object *o = data->want_obj.objects[i].item;
|
|
strvec_push(&av, oid_to_hex(&o->oid));
|
|
}
|
|
deepen_by_rev_list(data, av.nr, av.v);
|
|
strvec_clear(&av);
|
|
ret = 1;
|
|
} else {
|
|
if (data->shallows.nr > 0) {
|
|
int i;
|
|
for (i = 0; i < data->shallows.nr; i++)
|
|
register_shallow(the_repository,
|
|
&data->shallows.objects[i].item->oid);
|
|
}
|
|
}
|
|
|
|
data->shallow_nr += data->shallows.nr;
|
|
return ret;
|
|
}
|
|
|
|
static int process_shallow(const char *line, struct object_array *shallows)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "shallow ", &arg)) {
|
|
struct object_id oid;
|
|
struct object *object;
|
|
if (get_oid_hex(arg, &oid))
|
|
die("invalid shallow line: %s", line);
|
|
object = parse_object(the_repository, &oid);
|
|
if (!object)
|
|
return 1;
|
|
if (object->type != OBJ_COMMIT)
|
|
die("invalid shallow object %s", oid_to_hex(&oid));
|
|
if (!(object->flags & CLIENT_SHALLOW)) {
|
|
object->flags |= CLIENT_SHALLOW;
|
|
add_object_array(object, NULL, shallows);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_deepen(const char *line, int *depth)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "deepen ", &arg)) {
|
|
char *end = NULL;
|
|
*depth = (int)strtol(arg, &end, 0);
|
|
if (!end || *end || *depth <= 0)
|
|
die("Invalid deepen: %s", line);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "deepen-since ", &arg)) {
|
|
char *end = NULL;
|
|
*deepen_since = parse_timestamp(arg, &end, 0);
|
|
if (!end || *end || !deepen_since ||
|
|
/* revisions.c's max_age -1 is special */
|
|
*deepen_since == -1)
|
|
die("Invalid deepen-since: %s", line);
|
|
*deepen_rev_list = 1;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int process_deepen_not(const char *line, struct string_list *deepen_not, int *deepen_rev_list)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "deepen-not ", &arg)) {
|
|
char *ref = NULL;
|
|
struct object_id oid;
|
|
if (expand_ref(the_repository, arg, strlen(arg), &oid, &ref) != 1)
|
|
die("git upload-pack: ambiguous deepen-not: %s", line);
|
|
string_list_append(deepen_not, ref);
|
|
free(ref);
|
|
*deepen_rev_list = 1;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
NORETURN __attribute__((format(printf,2,3)))
|
|
static void send_err_and_die(struct upload_pack_data *data,
|
|
const char *fmt, ...)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
strbuf_vaddf(&buf, fmt, ap);
|
|
va_end(ap);
|
|
|
|
packet_writer_error(&data->writer, "%s", buf.buf);
|
|
die("%s", buf.buf);
|
|
}
|
|
|
|
static void check_one_filter(struct upload_pack_data *data,
|
|
struct list_objects_filter_options *opts)
|
|
{
|
|
const char *key = list_object_filter_config_name(opts->choice);
|
|
struct string_list_item *item = string_list_lookup(&data->allowed_filters,
|
|
key);
|
|
int allowed;
|
|
|
|
if (item)
|
|
allowed = (intptr_t)item->util;
|
|
else
|
|
allowed = data->allow_filter_fallback;
|
|
|
|
if (!allowed)
|
|
send_err_and_die(data, "filter '%s' not supported", key);
|
|
|
|
if (opts->choice == LOFC_TREE_DEPTH &&
|
|
opts->tree_exclude_depth > data->tree_filter_max_depth)
|
|
send_err_and_die(data,
|
|
"tree filter allows max depth %lu, but got %lu",
|
|
data->tree_filter_max_depth,
|
|
opts->tree_exclude_depth);
|
|
}
|
|
|
|
static void check_filter_recurse(struct upload_pack_data *data,
|
|
struct list_objects_filter_options *opts)
|
|
{
|
|
size_t i;
|
|
|
|
check_one_filter(data, opts);
|
|
if (opts->choice != LOFC_COMBINE)
|
|
return;
|
|
|
|
for (i = 0; i < opts->sub_nr; i++)
|
|
check_filter_recurse(data, &opts->sub[i]);
|
|
}
|
|
|
|
static void die_if_using_banned_filter(struct upload_pack_data *data)
|
|
{
|
|
check_filter_recurse(data, &data->filter_options);
|
|
}
|
|
|
|
static void receive_needs(struct upload_pack_data *data,
|
|
struct packet_reader *reader)
|
|
{
|
|
int has_non_tip = 0;
|
|
|
|
data->shallow_nr = 0;
|
|
for (;;) {
|
|
struct object *o;
|
|
const char *features;
|
|
struct object_id oid_buf;
|
|
const char *arg;
|
|
int feature_len;
|
|
|
|
reset_timeout(data->timeout);
|
|
if (packet_reader_read(reader) != PACKET_READ_NORMAL)
|
|
break;
|
|
|
|
if (process_shallow(reader->line, &data->shallows))
|
|
continue;
|
|
if (process_deepen(reader->line, &data->depth))
|
|
continue;
|
|
if (process_deepen_since(reader->line, &data->deepen_since, &data->deepen_rev_list))
|
|
continue;
|
|
if (process_deepen_not(reader->line, &data->deepen_not, &data->deepen_rev_list))
|
|
continue;
|
|
|
|
if (skip_prefix(reader->line, "filter ", &arg)) {
|
|
if (!data->filter_capability_requested)
|
|
die("git upload-pack: filtering capability not negotiated");
|
|
list_objects_filter_die_if_populated(&data->filter_options);
|
|
parse_list_objects_filter(&data->filter_options, arg);
|
|
die_if_using_banned_filter(data);
|
|
continue;
|
|
}
|
|
|
|
if (!skip_prefix(reader->line, "want ", &arg) ||
|
|
parse_oid_hex(arg, &oid_buf, &features))
|
|
die("git upload-pack: protocol error, "
|
|
"expected to get object ID, not '%s'", reader->line);
|
|
|
|
if (parse_feature_request(features, "deepen-relative"))
|
|
data->deepen_relative = 1;
|
|
if (parse_feature_request(features, "multi_ack_detailed"))
|
|
data->multi_ack = MULTI_ACK_DETAILED;
|
|
else if (parse_feature_request(features, "multi_ack"))
|
|
data->multi_ack = MULTI_ACK;
|
|
if (parse_feature_request(features, "no-done"))
|
|
data->no_done = 1;
|
|
if (parse_feature_request(features, "thin-pack"))
|
|
data->use_thin_pack = 1;
|
|
if (parse_feature_request(features, "ofs-delta"))
|
|
data->use_ofs_delta = 1;
|
|
if (parse_feature_request(features, "side-band-64k"))
|
|
data->use_sideband = LARGE_PACKET_MAX;
|
|
else if (parse_feature_request(features, "side-band"))
|
|
data->use_sideband = DEFAULT_PACKET_MAX;
|
|
if (parse_feature_request(features, "no-progress"))
|
|
data->no_progress = 1;
|
|
if (parse_feature_request(features, "include-tag"))
|
|
data->use_include_tag = 1;
|
|
if (data->allow_filter &&
|
|
parse_feature_request(features, "filter"))
|
|
data->filter_capability_requested = 1;
|
|
|
|
arg = parse_feature_value(features, "session-id", &feature_len, NULL);
|
|
if (arg) {
|
|
char *client_sid = xstrndup(arg, feature_len);
|
|
trace2_data_string("transfer", NULL, "client-sid", client_sid);
|
|
free(client_sid);
|
|
}
|
|
|
|
o = parse_object(the_repository, &oid_buf);
|
|
if (!o) {
|
|
packet_writer_error(&data->writer,
|
|
"upload-pack: not our ref %s",
|
|
oid_to_hex(&oid_buf));
|
|
die("git upload-pack: not our ref %s",
|
|
oid_to_hex(&oid_buf));
|
|
}
|
|
if (!(o->flags & WANTED)) {
|
|
o->flags |= WANTED;
|
|
if (!((data->allow_uor & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1
|
|
|| is_our_ref(o, data->allow_uor)))
|
|
has_non_tip = 1;
|
|
add_object_array(o, NULL, &data->want_obj);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We have sent all our refs already, and the other end
|
|
* should have chosen out of them. When we are operating
|
|
* in the stateless RPC mode, however, their choice may
|
|
* have been based on the set of older refs advertised
|
|
* by another process that handled the initial request.
|
|
*/
|
|
if (has_non_tip)
|
|
check_non_tip(data);
|
|
|
|
if (!data->use_sideband && data->daemon_mode)
|
|
data->no_progress = 1;
|
|
|
|
if (data->depth == 0 && !data->deepen_rev_list && data->shallows.nr == 0)
|
|
return;
|
|
|
|
if (send_shallow_list(data))
|
|
packet_flush(1);
|
|
}
|
|
|
|
/* return non-zero if the ref is hidden, otherwise 0 */
|
|
static int mark_our_ref(const char *refname, const char *refname_full,
|
|
const struct object_id *oid)
|
|
{
|
|
struct object *o = lookup_unknown_object(oid);
|
|
|
|
if (ref_is_hidden(refname, refname_full)) {
|
|
o->flags |= HIDDEN_REF;
|
|
return 1;
|
|
}
|
|
o->flags |= OUR_REF;
|
|
return 0;
|
|
}
|
|
|
|
static int check_ref(const char *refname_full, const struct object_id *oid,
|
|
int flag, void *cb_data)
|
|
{
|
|
const char *refname = strip_namespace(refname_full);
|
|
|
|
mark_our_ref(refname, refname_full, oid);
|
|
return 0;
|
|
}
|
|
|
|
static void format_symref_info(struct strbuf *buf, struct string_list *symref)
|
|
{
|
|
struct string_list_item *item;
|
|
|
|
if (!symref->nr)
|
|
return;
|
|
for_each_string_list_item(item, symref)
|
|
strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util);
|
|
}
|
|
|
|
static void format_session_id(struct strbuf *buf, struct upload_pack_data *d) {
|
|
if (d->advertise_sid)
|
|
strbuf_addf(buf, " session-id=%s", trace2_session_id());
|
|
}
|
|
|
|
static int send_ref(const char *refname, const struct object_id *oid,
|
|
int flag, void *cb_data)
|
|
{
|
|
static const char *capabilities = "multi_ack thin-pack side-band"
|
|
" side-band-64k ofs-delta shallow deepen-since deepen-not"
|
|
" deepen-relative no-progress include-tag multi_ack_detailed";
|
|
const char *refname_nons = strip_namespace(refname);
|
|
struct object_id peeled;
|
|
struct upload_pack_data *data = cb_data;
|
|
|
|
if (mark_our_ref(refname_nons, refname, oid))
|
|
return 0;
|
|
|
|
if (capabilities) {
|
|
struct strbuf symref_info = STRBUF_INIT;
|
|
struct strbuf session_id = STRBUF_INIT;
|
|
|
|
format_symref_info(&symref_info, &data->symref);
|
|
format_session_id(&session_id, data);
|
|
packet_write_fmt(1, "%s %s%c%s%s%s%s%s%s%s object-format=%s agent=%s\n",
|
|
oid_to_hex(oid), refname_nons,
|
|
0, capabilities,
|
|
(data->allow_uor & ALLOW_TIP_SHA1) ?
|
|
" allow-tip-sha1-in-want" : "",
|
|
(data->allow_uor & ALLOW_REACHABLE_SHA1) ?
|
|
" allow-reachable-sha1-in-want" : "",
|
|
data->stateless_rpc ? " no-done" : "",
|
|
symref_info.buf,
|
|
data->allow_filter ? " filter" : "",
|
|
session_id.buf,
|
|
the_hash_algo->name,
|
|
git_user_agent_sanitized());
|
|
strbuf_release(&symref_info);
|
|
strbuf_release(&session_id);
|
|
} else {
|
|
packet_write_fmt(1, "%s %s\n", oid_to_hex(oid), refname_nons);
|
|
}
|
|
capabilities = NULL;
|
|
if (!peel_iterated_oid(oid, &peeled))
|
|
packet_write_fmt(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
|
|
return 0;
|
|
}
|
|
|
|
static int find_symref(const char *refname, const struct object_id *oid,
|
|
int flag, void *cb_data)
|
|
{
|
|
const char *symref_target;
|
|
struct string_list_item *item;
|
|
|
|
if ((flag & REF_ISSYMREF) == 0)
|
|
return 0;
|
|
symref_target = resolve_ref_unsafe(refname, 0, NULL, &flag);
|
|
if (!symref_target || (flag & REF_ISSYMREF) == 0)
|
|
die("'%s' is a symref but it is not?", refname);
|
|
item = string_list_append(cb_data, strip_namespace(refname));
|
|
item->util = xstrdup(strip_namespace(symref_target));
|
|
return 0;
|
|
}
|
|
|
|
static int parse_object_filter_config(const char *var, const char *value,
|
|
struct upload_pack_data *data)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
const char *sub, *key;
|
|
size_t sub_len;
|
|
|
|
if (parse_config_key(var, "uploadpackfilter", &sub, &sub_len, &key))
|
|
return 0;
|
|
|
|
if (!sub) {
|
|
if (!strcmp(key, "allow"))
|
|
data->allow_filter_fallback = git_config_bool(var, value);
|
|
return 0;
|
|
}
|
|
|
|
strbuf_add(&buf, sub, sub_len);
|
|
|
|
if (!strcmp(key, "allow"))
|
|
string_list_insert(&data->allowed_filters, buf.buf)->util =
|
|
(void *)(intptr_t)git_config_bool(var, value);
|
|
else if (!strcmp(buf.buf, "tree") && !strcmp(key, "maxdepth")) {
|
|
if (!value) {
|
|
strbuf_release(&buf);
|
|
return config_error_nonbool(var);
|
|
}
|
|
string_list_insert(&data->allowed_filters, buf.buf)->util =
|
|
(void *)(intptr_t)1;
|
|
data->tree_filter_max_depth = git_config_ulong(var, value);
|
|
}
|
|
|
|
strbuf_release(&buf);
|
|
return 0;
|
|
}
|
|
|
|
static int upload_pack_config(const char *var, const char *value, void *cb_data)
|
|
{
|
|
struct upload_pack_data *data = cb_data;
|
|
|
|
if (!strcmp("uploadpack.allowtipsha1inwant", var)) {
|
|
if (git_config_bool(var, value))
|
|
data->allow_uor |= ALLOW_TIP_SHA1;
|
|
else
|
|
data->allow_uor &= ~ALLOW_TIP_SHA1;
|
|
} else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) {
|
|
if (git_config_bool(var, value))
|
|
data->allow_uor |= ALLOW_REACHABLE_SHA1;
|
|
else
|
|
data->allow_uor &= ~ALLOW_REACHABLE_SHA1;
|
|
} else if (!strcmp("uploadpack.allowanysha1inwant", var)) {
|
|
if (git_config_bool(var, value))
|
|
data->allow_uor |= ALLOW_ANY_SHA1;
|
|
else
|
|
data->allow_uor &= ~ALLOW_ANY_SHA1;
|
|
} else if (!strcmp("uploadpack.keepalive", var)) {
|
|
data->keepalive = git_config_int(var, value);
|
|
if (!data->keepalive)
|
|
data->keepalive = -1;
|
|
} else if (!strcmp("uploadpack.allowfilter", var)) {
|
|
data->allow_filter = git_config_bool(var, value);
|
|
} else if (!strcmp("uploadpack.allowrefinwant", var)) {
|
|
data->allow_ref_in_want = git_config_bool(var, value);
|
|
} else if (!strcmp("uploadpack.allowsidebandall", var)) {
|
|
data->allow_sideband_all = git_config_bool(var, value);
|
|
} else if (!strcmp("core.precomposeunicode", var)) {
|
|
precomposed_unicode = git_config_bool(var, value);
|
|
} else if (!strcmp("transfer.advertisesid", var)) {
|
|
data->advertise_sid = git_config_bool(var, value);
|
|
}
|
|
|
|
if (current_config_scope() != CONFIG_SCOPE_LOCAL &&
|
|
current_config_scope() != CONFIG_SCOPE_WORKTREE) {
|
|
if (!strcmp("uploadpack.packobjectshook", var))
|
|
return git_config_string(&data->pack_objects_hook, var, value);
|
|
}
|
|
|
|
if (parse_object_filter_config(var, value, data) < 0)
|
|
return -1;
|
|
|
|
return parse_hide_refs_config(var, value, "uploadpack");
|
|
}
|
|
|
|
void upload_pack(struct upload_pack_options *options)
|
|
{
|
|
struct packet_reader reader;
|
|
struct upload_pack_data data;
|
|
|
|
upload_pack_data_init(&data);
|
|
|
|
git_config(upload_pack_config, &data);
|
|
|
|
data.stateless_rpc = options->stateless_rpc;
|
|
data.daemon_mode = options->daemon_mode;
|
|
data.timeout = options->timeout;
|
|
|
|
head_ref_namespaced(find_symref, &data.symref);
|
|
|
|
if (options->advertise_refs || !data.stateless_rpc) {
|
|
reset_timeout(data.timeout);
|
|
head_ref_namespaced(send_ref, &data);
|
|
for_each_namespaced_ref(send_ref, &data);
|
|
advertise_shallow_grafts(1);
|
|
packet_flush(1);
|
|
} else {
|
|
head_ref_namespaced(check_ref, NULL);
|
|
for_each_namespaced_ref(check_ref, NULL);
|
|
}
|
|
|
|
if (!options->advertise_refs) {
|
|
packet_reader_init(&reader, 0, NULL, 0,
|
|
PACKET_READ_CHOMP_NEWLINE |
|
|
PACKET_READ_DIE_ON_ERR_PACKET);
|
|
|
|
receive_needs(&data, &reader);
|
|
|
|
/*
|
|
* An EOF at this exact point in negotiation should be
|
|
* acceptable from stateless clients as they will consume the
|
|
* shallow list before doing subsequent rpc with haves/etc.
|
|
*/
|
|
if (data.stateless_rpc)
|
|
reader.options |= PACKET_READ_GENTLE_ON_EOF;
|
|
|
|
if (data.want_obj.nr &&
|
|
packet_reader_peek(&reader) != PACKET_READ_EOF) {
|
|
reader.options &= ~PACKET_READ_GENTLE_ON_EOF;
|
|
get_common_commits(&data, &reader);
|
|
create_pack_file(&data, NULL);
|
|
}
|
|
}
|
|
|
|
upload_pack_data_clear(&data);
|
|
}
|
|
|
|
static int parse_want(struct packet_writer *writer, const char *line,
|
|
struct object_array *want_obj)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "want ", &arg)) {
|
|
struct object_id oid;
|
|
struct object *o;
|
|
|
|
if (get_oid_hex(arg, &oid))
|
|
die("git upload-pack: protocol error, "
|
|
"expected to get oid, not '%s'", line);
|
|
|
|
o = parse_object(the_repository, &oid);
|
|
if (!o) {
|
|
packet_writer_error(writer,
|
|
"upload-pack: not our ref %s",
|
|
oid_to_hex(&oid));
|
|
die("git upload-pack: not our ref %s",
|
|
oid_to_hex(&oid));
|
|
}
|
|
|
|
if (!(o->flags & WANTED)) {
|
|
o->flags |= WANTED;
|
|
add_object_array(o, NULL, want_obj);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_want_ref(struct packet_writer *writer, const char *line,
|
|
struct string_list *wanted_refs,
|
|
struct object_array *want_obj)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "want-ref ", &arg)) {
|
|
struct object_id oid;
|
|
struct string_list_item *item;
|
|
struct object *o;
|
|
|
|
if (read_ref(arg, &oid)) {
|
|
packet_writer_error(writer, "unknown ref %s", arg);
|
|
die("unknown ref %s", arg);
|
|
}
|
|
|
|
item = string_list_append(wanted_refs, arg);
|
|
item->util = oiddup(&oid);
|
|
|
|
o = parse_object_or_die(&oid, arg);
|
|
if (!(o->flags & WANTED)) {
|
|
o->flags |= WANTED;
|
|
add_object_array(o, NULL, want_obj);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_have(const char *line, struct oid_array *haves)
|
|
{
|
|
const char *arg;
|
|
if (skip_prefix(line, "have ", &arg)) {
|
|
struct object_id oid;
|
|
|
|
if (get_oid_hex(arg, &oid))
|
|
die("git upload-pack: expected SHA1 object, got '%s'", arg);
|
|
oid_array_append(haves, &oid);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void process_args(struct packet_reader *request,
|
|
struct upload_pack_data *data)
|
|
{
|
|
while (packet_reader_read(request) == PACKET_READ_NORMAL) {
|
|
const char *arg = request->line;
|
|
const char *p;
|
|
|
|
/* process want */
|
|
if (parse_want(&data->writer, arg, &data->want_obj))
|
|
continue;
|
|
if (data->allow_ref_in_want &&
|
|
parse_want_ref(&data->writer, arg, &data->wanted_refs,
|
|
&data->want_obj))
|
|
continue;
|
|
/* process have line */
|
|
if (parse_have(arg, &data->haves))
|
|
continue;
|
|
|
|
/* process args like thin-pack */
|
|
if (!strcmp(arg, "thin-pack")) {
|
|
data->use_thin_pack = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "ofs-delta")) {
|
|
data->use_ofs_delta = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "no-progress")) {
|
|
data->no_progress = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "include-tag")) {
|
|
data->use_include_tag = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "done")) {
|
|
data->done = 1;
|
|
continue;
|
|
}
|
|
|
|
/* Shallow related arguments */
|
|
if (process_shallow(arg, &data->shallows))
|
|
continue;
|
|
if (process_deepen(arg, &data->depth))
|
|
continue;
|
|
if (process_deepen_since(arg, &data->deepen_since,
|
|
&data->deepen_rev_list))
|
|
continue;
|
|
if (process_deepen_not(arg, &data->deepen_not,
|
|
&data->deepen_rev_list))
|
|
continue;
|
|
if (!strcmp(arg, "deepen-relative")) {
|
|
data->deepen_relative = 1;
|
|
continue;
|
|
}
|
|
|
|
if (data->allow_filter && skip_prefix(arg, "filter ", &p)) {
|
|
list_objects_filter_die_if_populated(&data->filter_options);
|
|
parse_list_objects_filter(&data->filter_options, p);
|
|
die_if_using_banned_filter(data);
|
|
continue;
|
|
}
|
|
|
|
if ((git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
|
|
data->allow_sideband_all) &&
|
|
!strcmp(arg, "sideband-all")) {
|
|
data->writer.use_sideband = 1;
|
|
continue;
|
|
}
|
|
|
|
if (skip_prefix(arg, "packfile-uris ", &p)) {
|
|
string_list_split(&data->uri_protocols, p, ',', -1);
|
|
continue;
|
|
}
|
|
|
|
/* ignore unknown lines maybe? */
|
|
die("unexpected line: '%s'", arg);
|
|
}
|
|
|
|
if (data->uri_protocols.nr && !data->writer.use_sideband)
|
|
string_list_clear(&data->uri_protocols, 0);
|
|
|
|
if (request->status != PACKET_READ_FLUSH)
|
|
die(_("expected flush after fetch arguments"));
|
|
}
|
|
|
|
static int process_haves(struct upload_pack_data *data, struct oid_array *common)
|
|
{
|
|
int i;
|
|
|
|
/* Process haves */
|
|
for (i = 0; i < data->haves.nr; i++) {
|
|
const struct object_id *oid = &data->haves.oid[i];
|
|
|
|
if (!has_object_file_with_flags(oid,
|
|
OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT))
|
|
continue;
|
|
|
|
oid_array_append(common, oid);
|
|
|
|
do_got_oid(data, oid);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int send_acks(struct upload_pack_data *data, struct oid_array *acks)
|
|
{
|
|
int i;
|
|
|
|
packet_writer_write(&data->writer, "acknowledgments\n");
|
|
|
|
/* Send Acks */
|
|
if (!acks->nr)
|
|
packet_writer_write(&data->writer, "NAK\n");
|
|
|
|
for (i = 0; i < acks->nr; i++) {
|
|
packet_writer_write(&data->writer, "ACK %s\n",
|
|
oid_to_hex(&acks->oid[i]));
|
|
}
|
|
|
|
if (ok_to_give_up(data)) {
|
|
/* Send Ready */
|
|
packet_writer_write(&data->writer, "ready\n");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_haves_and_send_acks(struct upload_pack_data *data)
|
|
{
|
|
struct oid_array common = OID_ARRAY_INIT;
|
|
int ret = 0;
|
|
|
|
process_haves(data, &common);
|
|
if (data->done) {
|
|
ret = 1;
|
|
} else if (send_acks(data, &common)) {
|
|
packet_writer_delim(&data->writer);
|
|
ret = 1;
|
|
} else {
|
|
/* Add Flush */
|
|
packet_writer_flush(&data->writer);
|
|
ret = 0;
|
|
}
|
|
|
|
oid_array_clear(&data->haves);
|
|
oid_array_clear(&common);
|
|
return ret;
|
|
}
|
|
|
|
static void send_wanted_ref_info(struct upload_pack_data *data)
|
|
{
|
|
const struct string_list_item *item;
|
|
|
|
if (!data->wanted_refs.nr)
|
|
return;
|
|
|
|
packet_writer_write(&data->writer, "wanted-refs\n");
|
|
|
|
for_each_string_list_item(item, &data->wanted_refs) {
|
|
packet_writer_write(&data->writer, "%s %s\n",
|
|
oid_to_hex(item->util),
|
|
item->string);
|
|
}
|
|
|
|
packet_writer_delim(&data->writer);
|
|
}
|
|
|
|
static void send_shallow_info(struct upload_pack_data *data)
|
|
{
|
|
/* No shallow info needs to be sent */
|
|
if (!data->depth && !data->deepen_rev_list && !data->shallows.nr &&
|
|
!is_repository_shallow(the_repository))
|
|
return;
|
|
|
|
packet_writer_write(&data->writer, "shallow-info\n");
|
|
|
|
if (!send_shallow_list(data) &&
|
|
is_repository_shallow(the_repository))
|
|
deepen(data, INFINITE_DEPTH);
|
|
|
|
packet_delim(1);
|
|
}
|
|
|
|
enum fetch_state {
|
|
FETCH_PROCESS_ARGS = 0,
|
|
FETCH_SEND_ACKS,
|
|
FETCH_SEND_PACK,
|
|
FETCH_DONE,
|
|
};
|
|
|
|
int upload_pack_v2(struct repository *r, struct strvec *keys,
|
|
struct packet_reader *request)
|
|
{
|
|
enum fetch_state state = FETCH_PROCESS_ARGS;
|
|
struct upload_pack_data data;
|
|
|
|
clear_object_flags(ALL_FLAGS);
|
|
|
|
upload_pack_data_init(&data);
|
|
data.use_sideband = LARGE_PACKET_MAX;
|
|
|
|
git_config(upload_pack_config, &data);
|
|
|
|
while (state != FETCH_DONE) {
|
|
switch (state) {
|
|
case FETCH_PROCESS_ARGS:
|
|
process_args(request, &data);
|
|
|
|
if (!data.want_obj.nr) {
|
|
/*
|
|
* Request didn't contain any 'want' lines,
|
|
* guess they didn't want anything.
|
|
*/
|
|
state = FETCH_DONE;
|
|
} else if (data.haves.nr) {
|
|
/*
|
|
* Request had 'have' lines, so lets ACK them.
|
|
*/
|
|
state = FETCH_SEND_ACKS;
|
|
} else {
|
|
/*
|
|
* Request had 'want's but no 'have's so we can
|
|
* immedietly go to construct and send a pack.
|
|
*/
|
|
state = FETCH_SEND_PACK;
|
|
}
|
|
break;
|
|
case FETCH_SEND_ACKS:
|
|
if (process_haves_and_send_acks(&data))
|
|
state = FETCH_SEND_PACK;
|
|
else
|
|
state = FETCH_DONE;
|
|
break;
|
|
case FETCH_SEND_PACK:
|
|
send_wanted_ref_info(&data);
|
|
send_shallow_info(&data);
|
|
|
|
if (data.uri_protocols.nr) {
|
|
create_pack_file(&data, &data.uri_protocols);
|
|
} else {
|
|
packet_writer_write(&data.writer, "packfile\n");
|
|
create_pack_file(&data, NULL);
|
|
}
|
|
state = FETCH_DONE;
|
|
break;
|
|
case FETCH_DONE:
|
|
continue;
|
|
}
|
|
}
|
|
|
|
upload_pack_data_clear(&data);
|
|
return 0;
|
|
}
|
|
|
|
int upload_pack_advertise(struct repository *r,
|
|
struct strbuf *value)
|
|
{
|
|
if (value) {
|
|
int allow_filter_value;
|
|
int allow_ref_in_want;
|
|
int allow_sideband_all_value;
|
|
char *str = NULL;
|
|
|
|
strbuf_addstr(value, "shallow");
|
|
|
|
if (!repo_config_get_bool(the_repository,
|
|
"uploadpack.allowfilter",
|
|
&allow_filter_value) &&
|
|
allow_filter_value)
|
|
strbuf_addstr(value, " filter");
|
|
|
|
if (!repo_config_get_bool(the_repository,
|
|
"uploadpack.allowrefinwant",
|
|
&allow_ref_in_want) &&
|
|
allow_ref_in_want)
|
|
strbuf_addstr(value, " ref-in-want");
|
|
|
|
if (git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
|
|
(!repo_config_get_bool(the_repository,
|
|
"uploadpack.allowsidebandall",
|
|
&allow_sideband_all_value) &&
|
|
allow_sideband_all_value))
|
|
strbuf_addstr(value, " sideband-all");
|
|
|
|
if (!repo_config_get_string(the_repository,
|
|
"uploadpack.blobpackfileuri",
|
|
&str) &&
|
|
str) {
|
|
strbuf_addstr(value, " packfile-uris");
|
|
free(str);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|