Merge branch 'ph/push-to-delete-nothing'

* ph/push-to-delete-nothing:
  receive-pack: don't pass non-existent refs to post-{receive,update} hooks

Conflicts:
	builtin/receive-pack.c

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e2d3f94661ffd89e08a1bf0e52ff07b366612b65..261b610d24017557c137d83a9c005b662e795b6a 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -154,7 +154,8 @@ static void write_head_info(void)
 struct command {
        struct command *next;
        const char *error_string;
-       unsigned int skip_update;
+       unsigned int skip_update:1,
+                    did_not_exist:1;
        unsigned char old_sha1[20];
        unsigned char new_sha1[20];
        char ref_name[FLEX_ARRAY]; /* more */
@@ -264,6 +265,7 @@ static int run_and_feed_hook(const char *hook_name, feed_fn feed, void *feed_sta
 
 struct receive_hook_feed_state {
        struct command *cmd;
+       int skip_broken;
        struct strbuf buf;
 };
 
@@ -272,7 +274,8 @@ static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep)
        struct receive_hook_feed_state *state = state_;
        struct command *cmd = state->cmd;
 
-       while (cmd && cmd->error_string)
+       while (cmd &&
+              state->skip_broken && (cmd->error_string || cmd->did_not_exist))
                cmd = cmd->next;
        if (!cmd)
                return -1; /* EOF */
@@ -288,13 +291,15 @@ static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep)
        return 0;
 }
 
-static int run_receive_hook(struct command *commands, const char *hook_name)
+static int run_receive_hook(struct command *commands, const char *hook_name,
+                           int skip_broken)
 {
        struct receive_hook_feed_state state;
        int status;
 
        strbuf_init(&state.buf, 0);
        state.cmd = commands;
+       state.skip_broken = skip_broken;
        if (feed_receive_hook(&state, NULL, NULL))
                return 0;
        state.cmd = commands;
@@ -485,8 +490,13 @@ static const char *update(struct command *cmd)
 
        if (is_null_sha1(new_sha1)) {
                if (!parse_object(old_sha1)) {
-                       rp_warning("Allowing deletion of corrupt ref.");
                        old_sha1 = NULL;
+                       if (ref_exists(name)) {
+                               rp_warning("Allowing deletion of corrupt ref.");
+                       } else {
+                               rp_warning("Deleting a non-existent ref.");
+                               cmd->did_not_exist = 1;
+                       }
                }
                if (delete_ref(namespaced_name, old_sha1, 0)) {
                        rp_error("failed to delete %s", name);
@@ -517,7 +527,7 @@ static void run_update_post_hook(struct command *commands)
        struct child_process proc;
 
        for (argc = 0, cmd = commands; cmd; cmd = cmd->next) {
-               if (cmd->error_string)
+               if (cmd->error_string || cmd->did_not_exist)
                        continue;
                argc++;
        }
@@ -528,7 +538,7 @@ static void run_update_post_hook(struct command *commands)
 
        for (argc = 1, cmd = commands; cmd; cmd = cmd->next) {
                char *p;
-               if (cmd->error_string)
+               if (cmd->error_string || cmd->did_not_exist)
                        continue;
                p = xmalloc(strlen(cmd->ref_name) + 1);
                strcpy(p, cmd->ref_name);
@@ -672,7 +682,7 @@ static void execute_commands(struct command *commands, const char *unpacker_erro
                                       0, &cmd))
                set_connectivity_errors(commands);
 
-       if (run_receive_hook(commands, pre_receive_hook)) {
+       if (run_receive_hook(commands, pre_receive_hook, 0)) {
                for (cmd = commands; cmd; cmd = cmd->next)
                        cmd->error_string = "pre-receive hook declined";
                return;
@@ -940,7 +950,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
                        unlink_or_warn(pack_lockfile);
                if (report_status)
                        report(commands, unpack_status);
-               run_receive_hook(commands, post_receive_hook);
+               run_receive_hook(commands, post_receive_hook, 1);
                run_update_post_hook(commands);
                if (auto_gc) {
                        const char *argv_gc_auto[] = {

diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index 3abb2907ea91c5ef6298ca7ee64b7a8156d65d96..b69cf574d7e9a272ea70864e87ed6556abe94f13 100755 (executable)
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -40,6 +40,40 @@ mk_test () {
        )
 }
 
+mk_test_with_hooks() {
+       mk_test "$@" &&
+       (
+               cd testrepo &&
+               mkdir .git/hooks &&
+               cd .git/hooks &&
+
+               cat >pre-receive <<-'EOF' &&
+               #!/bin/sh
+               cat - >>pre-receive.actual
+               EOF
+
+               cat >update <<-'EOF' &&
+               #!/bin/sh
+               printf "%s %s %s\n" "$@" >>update.actual
+               EOF
+
+               cat >post-receive <<-'EOF' &&
+               #!/bin/sh
+               cat - >>post-receive.actual
+               EOF
+
+               cat >post-update <<-'EOF' &&
+               #!/bin/sh
+               for ref in "$@"
+               do
+                       printf "%s\n" "$ref" >>post-update.actual
+               done
+               EOF
+
+               chmod +x pre-receive update post-receive post-update
+       )
+}
+
 mk_child() {
        rm -rf "$1" &&
        git clone testrepo "$1"
@@ -559,6 +593,169 @@ test_expect_success 'allow deleting an invalid remote ref' '
 
 '
 
+test_expect_success 'pushing valid refs triggers post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master heads/next &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
+       newnext=$_z40 &&
+       git push testrepo refs/heads/master:refs/heads/master :refs/heads/next &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/next $orgnext $newnext
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               refs/heads/next
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deleting dangling ref triggers hooks with correct args' '
+       mk_test_with_hooks heads/master &&
+       rm -f testrepo/.git/objects/??/* &&
+       git push testrepo :refs/heads/master &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/master
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/master
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deletion of a non-existent ref is not fed to post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       git push testrepo master :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deletion of a non-existent ref alone does trigger post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master &&
+       git push testrepo :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_path_is_missing post-receive.actual &&
+               test_path_is_missing post-update.actual
+       )
+'
+
+test_expect_success 'mixed ref updates, deletes, invalid deletes trigger hooks with correct input' '
+       mk_test_with_hooks heads/master heads/next heads/pu &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
+       newnext=$_z40 &&
+       orgpu=$(cd testrepo && git show-ref -s --verify refs/heads/pu) &&
+       newpu=$(git show-ref -s --verify refs/heads/master) &&
+       git push testrepo refs/heads/master:refs/heads/master \
+           refs/heads/master:refs/heads/pu :refs/heads/next \
+           :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               $orgpu $newpu refs/heads/pu
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/next $orgnext $newnext
+               refs/heads/pu $orgpu $newpu
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               $orgpu $newpu refs/heads/pu
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               refs/heads/next
+               refs/heads/pu
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
 test_expect_success 'allow deleting a ref using --delete' '
        mk_test heads/master &&
        (cd testrepo && git config receive.denyDeleteCurrent warn) &&