diff options
| -rw-r--r-- | remote.c | 104 | ||||
| -rw-r--r-- | remote.h | 1 | ||||
| -rwxr-xr-x | t/t5529-push-errors.sh | 48 | ||||
| -rw-r--r-- | transport.c | 8 |
4 files changed, 130 insertions, 31 deletions
@@ -1036,11 +1036,13 @@ int count_refspec_match(const char *pattern, } } if (!matched) { - *matched_ref = matched_weak; + if (matched_ref) + *matched_ref = matched_weak; return weak_match; } else { - *matched_ref = matched; + if (matched_ref) + *matched_ref = matched; return match; } } @@ -1060,18 +1062,25 @@ static struct ref *alloc_delete_ref(void) return ref; } -static struct ref *try_explicit_object_name(const char *name) +static int try_explicit_object_name(const char *name, + struct ref **match) { unsigned char sha1[20]; - struct ref *ref; - if (!*name) - return alloc_delete_ref(); + if (!*name) { + if (match) + *match = alloc_delete_ref(); + return 0; + } + if (get_sha1(name, sha1)) - return NULL; - ref = alloc_ref(name); - hashcpy(ref->new_sha1, sha1); - return ref; + return -1; + + if (match) { + *match = alloc_ref(name); + hashcpy((*match)->new_sha1, sha1); + } + return 0; } static struct ref *make_linked_ref(const char *name, struct ref ***tail) @@ -1101,12 +1110,37 @@ static char *guess_ref(const char *name, struct ref *peer) return strbuf_detach(&buf, NULL); } +static int match_explicit_lhs(struct ref *src, + struct refspec *rs, + struct ref **match, + int *allocated_match) +{ + switch (count_refspec_match(rs->src, src, match)) { + case 1: + if (allocated_match) + *allocated_match = 0; + return 0; + case 0: + /* The source could be in the get_sha1() format + * not a reference name. :refs/other is a + * way to delete 'other' ref at the remote end. + */ + if (try_explicit_object_name(rs->src, match) < 0) + return error("src refspec %s does not match any.", rs->src); + if (allocated_match) + *allocated_match = 1; + return 0; + default: + return error("src refspec %s matches more than one.", rs->src); + } +} + static int match_explicit(struct ref *src, struct ref *dst, struct ref ***dst_tail, struct refspec *rs) { struct ref *matched_src, *matched_dst; - int copy_src; + int allocated_src; const char *dst_value = rs->dst; char *dst_guess; @@ -1115,23 +1149,8 @@ static int match_explicit(struct ref *src, struct ref *dst, return 0; matched_src = matched_dst = NULL; - switch (count_refspec_match(rs->src, src, &matched_src)) { - case 1: - copy_src = 1; - break; - case 0: - /* The source could be in the get_sha1() format - * not a reference name. :refs/other is a - * way to delete 'other' ref at the remote end. - */ - matched_src = try_explicit_object_name(rs->src); - if (!matched_src) - return error("src refspec %s does not match any.", rs->src); - copy_src = 0; - break; - default: - return error("src refspec %s matches more than one.", rs->src); - } + if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0) + return -1; if (!dst_value) { unsigned char sha1[20]; @@ -1176,7 +1195,9 @@ static int match_explicit(struct ref *src, struct ref *dst, return error("dst ref %s receives from more than one src.", matched_dst->name); else { - matched_dst->peer_ref = copy_src ? copy_ref(matched_src) : matched_src; + matched_dst->peer_ref = allocated_src ? + matched_src : + copy_ref(matched_src); matched_dst->force = rs->force; } return 0; @@ -1358,6 +1379,31 @@ static void prepare_ref_index(struct string_list *ref_index, struct ref *ref) } /* + * Given only the set of local refs, sanity-check the set of push + * refspecs. We can't catch all errors that match_push_refs would, + * but we can catch some errors early before even talking to the + * remote side. + */ +int check_push_refs(struct ref *src, int nr_refspec, const char **refspec_names) +{ + struct refspec *refspec = parse_push_refspec(nr_refspec, refspec_names); + int ret = 0; + int i; + + for (i = 0; i < nr_refspec; i++) { + struct refspec *rs = refspec + i; + + if (rs->pattern || rs->matching) + continue; + + ret |= match_explicit_lhs(src, rs, NULL, NULL); + } + + free_refspec(nr_refspec, refspec); + return ret; +} + +/* * Given the set of refs the local repository has, the set of refs the * remote repository has, and the refspec used for push, determine * what remote refs we will update and with what value by setting @@ -166,6 +166,7 @@ extern int query_refspecs(struct refspec *specs, int nr, struct refspec *query); char *apply_refspecs(struct refspec *refspecs, int nr_refspec, const char *name); +int check_push_refs(struct ref *src, int nr_refspec, const char **refspec); int match_push_refs(struct ref *src, struct ref **dst, int nr_refspec, const char **refspec, int all); void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, diff --git a/t/t5529-push-errors.sh b/t/t5529-push-errors.sh new file mode 100755 index 0000000000..9871307fd4 --- /dev/null +++ b/t/t5529-push-errors.sh @@ -0,0 +1,48 @@ +#!/bin/sh + +test_description='detect some push errors early (before contacting remote)' +. ./test-lib.sh + +test_expect_success 'setup commits' ' + test_commit one +' + +test_expect_success 'setup remote' ' + git init --bare remote.git && + git remote add origin remote.git +' + +test_expect_success 'setup fake receive-pack' ' + FAKE_RP_ROOT=$(pwd) && + export FAKE_RP_ROOT && + write_script fake-rp <<-\EOF && + echo yes >"$FAKE_RP_ROOT"/rp-ran + exit 1 + EOF + git config remote.origin.receivepack "\"\$FAKE_RP_ROOT/fake-rp\"" +' + +test_expect_success 'detect missing branches early' ' + echo no >rp-ran && + echo no >expect && + test_must_fail git push origin missing && + test_cmp expect rp-ran +' + +test_expect_success 'detect missing sha1 expressions early' ' + echo no >rp-ran && + echo no >expect && + test_must_fail git push origin master~2:master && + test_cmp expect rp-ran +' + +test_expect_success 'detect ambiguous refs early' ' + git branch foo && + git tag foo && + echo no >rp-ran && + echo no >expect && + test_must_fail git push origin foo && + test_cmp expect rp-ran +' + +test_done diff --git a/transport.c b/transport.c index ca7bb441bf..325f03e1ee 100644 --- a/transport.c +++ b/transport.c @@ -1132,8 +1132,7 @@ int transport_push(struct transport *transport, return transport->push(transport, refspec_nr, refspec, flags); } else if (transport->push_refs) { - struct ref *remote_refs = - transport->get_refs_list(transport, 1); + struct ref *remote_refs; struct ref *local_refs = get_local_heads(); int match_flags = MATCH_REFS_NONE; int verbose = (transport->verbose > 0); @@ -1142,6 +1141,11 @@ int transport_push(struct transport *transport, int pretend = flags & TRANSPORT_PUSH_DRY_RUN; int push_ret, ret, err; + if (check_push_refs(local_refs, refspec_nr, refspec) < 0) + return -1; + + remote_refs = transport->get_refs_list(transport, 1); + if (flags & TRANSPORT_PUSH_ALL) match_flags |= MATCH_REFS_ALL; if (flags & TRANSPORT_PUSH_MIRROR) |