From bc60f8a77c6e676225810f33117abcf9117b1c1e Mon Sep 17 00:00:00 2001 From: Thomas Gummerer Date: Tue, 16 Feb 2016 10:47:49 +0100 Subject: [PATCH 1/4] remote: use parse_config_key 95b567c7 ("use skip_prefix to avoid repeating strings") transformed calls using starts_with() and then skipping the length of the prefix to skip_prefix() calls. In remote.c there are a few calls like: if (starts_with(foo, "bar")) foo += 3 These calls weren't touched by the aformentioned commit, but can be replaced by calls to parse_config_key(), to simplify the code and clarify the intentions. Do that. Helped-by: Jeff King Signed-off-by: Thomas Gummerer Reviewed-by: Jeff King Signed-off-by: Junio C Hamano --- remote.c | 69 ++++++++++++++++++++++++++------------------------------ 1 file changed, 32 insertions(+), 37 deletions(-) diff --git a/remote.c b/remote.c index 35940a5602..011c9fb868 100644 --- a/remote.c +++ b/remote.c @@ -318,93 +318,88 @@ static void read_branches_file(struct remote *remote) static int handle_config(const char *key, const char *value, void *cb) { const char *name; + int namelen; const char *subkey; struct remote *remote; struct branch *branch; - if (starts_with(key, "branch.")) { - name = key + 7; - subkey = strrchr(name, '.'); - if (!subkey) + if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) { + if (!name) return 0; - branch = make_branch(name, subkey - name); - if (!strcmp(subkey, ".remote")) { + branch = make_branch(name, namelen); + if (!strcmp(subkey, "remote")) { return git_config_string(&branch->remote_name, key, value); - } else if (!strcmp(subkey, ".pushremote")) { + } else if (!strcmp(subkey, "pushremote")) { return git_config_string(&branch->pushremote_name, key, value); - } else if (!strcmp(subkey, ".merge")) { + } else if (!strcmp(subkey, "merge")) { if (!value) return config_error_nonbool(key); add_merge(branch, xstrdup(value)); } return 0; } - if (starts_with(key, "url.")) { + if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) { struct rewrite *rewrite; - name = key + 4; - subkey = strrchr(name, '.'); - if (!subkey) + if (!name) return 0; - if (!strcmp(subkey, ".insteadof")) { - rewrite = make_rewrite(&rewrites, name, subkey - name); + if (!strcmp(subkey, "insteadof")) { + rewrite = make_rewrite(&rewrites, name, namelen); if (!value) return config_error_nonbool(key); add_instead_of(rewrite, xstrdup(value)); - } else if (!strcmp(subkey, ".pushinsteadof")) { - rewrite = make_rewrite(&rewrites_push, name, subkey - name); + } else if (!strcmp(subkey, "pushinsteadof")) { + rewrite = make_rewrite(&rewrites_push, name, namelen); if (!value) return config_error_nonbool(key); add_instead_of(rewrite, xstrdup(value)); } } - if (!starts_with(key, "remote.")) + if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0) return 0; - name = key + 7; /* Handle remote.* variables */ - if (!strcmp(name, "pushdefault")) + if (!name && !strcmp(subkey, "pushdefault")) return git_config_string(&pushremote_name, key, value); + if (!name) + return 0; /* Handle remote..* variables */ if (*name == '/') { warning("Config remote shorthand cannot begin with '/': %s", name); return 0; } - subkey = strrchr(name, '.'); - if (!subkey) - return 0; - remote = make_remote(name, subkey - name); + remote = make_remote(name, namelen); remote->origin = REMOTE_CONFIG; - if (!strcmp(subkey, ".mirror")) + if (!strcmp(subkey, "mirror")) remote->mirror = git_config_bool(key, value); - else if (!strcmp(subkey, ".skipdefaultupdate")) + else if (!strcmp(subkey, "skipdefaultupdate")) remote->skip_default_update = git_config_bool(key, value); - else if (!strcmp(subkey, ".skipfetchall")) + else if (!strcmp(subkey, "skipfetchall")) remote->skip_default_update = git_config_bool(key, value); - else if (!strcmp(subkey, ".prune")) + else if (!strcmp(subkey, "prune")) remote->prune = git_config_bool(key, value); - else if (!strcmp(subkey, ".url")) { + else if (!strcmp(subkey, "url")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_url(remote, v); - } else if (!strcmp(subkey, ".pushurl")) { + } else if (!strcmp(subkey, "pushurl")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_pushurl(remote, v); - } else if (!strcmp(subkey, ".push")) { + } else if (!strcmp(subkey, "push")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_push_refspec(remote, v); - } else if (!strcmp(subkey, ".fetch")) { + } else if (!strcmp(subkey, "fetch")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_fetch_refspec(remote, v); - } else if (!strcmp(subkey, ".receivepack")) { + } else if (!strcmp(subkey, "receivepack")) { const char *v; if (git_config_string(&v, key, value)) return -1; @@ -412,7 +407,7 @@ static int handle_config(const char *key, const char *value, void *cb) remote->receivepack = v; else error("more than one receivepack given, using the first"); - } else if (!strcmp(subkey, ".uploadpack")) { + } else if (!strcmp(subkey, "uploadpack")) { const char *v; if (git_config_string(&v, key, value)) return -1; @@ -420,18 +415,18 @@ static int handle_config(const char *key, const char *value, void *cb) remote->uploadpack = v; else error("more than one uploadpack given, using the first"); - } else if (!strcmp(subkey, ".tagopt")) { + } else if (!strcmp(subkey, "tagopt")) { if (!strcmp(value, "--no-tags")) remote->fetch_tags = -1; else if (!strcmp(value, "--tags")) remote->fetch_tags = 2; - } else if (!strcmp(subkey, ".proxy")) { + } else if (!strcmp(subkey, "proxy")) { return git_config_string((const char **)&remote->http_proxy, key, value); - } else if (!strcmp(subkey, ".proxyauthmethod")) { + } else if (!strcmp(subkey, "proxyauthmethod")) { return git_config_string((const char **)&remote->http_proxy_authmethod, key, value); - } else if (!strcmp(subkey, ".vcs")) { + } else if (!strcmp(subkey, "vcs")) { return git_config_string(&remote->foreign_vcs, key, value); } return 0; From 674468b3642abfff7c61d5ff95fffc43b87f70b7 Mon Sep 17 00:00:00 2001 From: Thomas Gummerer Date: Tue, 16 Feb 2016 10:47:50 +0100 Subject: [PATCH 2/4] remote: simplify remote_is_configured() The remote_is_configured() function allows checking whether a remote exists or not. The function however only works if remote_get() wasn't called before calling it. In addition, it only checks the configuration for remotes, but not remotes or branches files. Make use of the origin member of struct remote instead, which indicates where the remote comes from. It will be set to some value if the remote is configured in any file in the repository, but is initialized to 0 if the remote is only created in make_remote(). Signed-off-by: Thomas Gummerer Reviewed-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/fetch.c | 5 ++--- builtin/remote.c | 12 ++++++------ remote.c | 13 ++----------- remote.h | 3 ++- 4 files changed, 12 insertions(+), 21 deletions(-) diff --git a/builtin/fetch.c b/builtin/fetch.c index 8e742135f0..81218300d8 100644 --- a/builtin/fetch.c +++ b/builtin/fetch.c @@ -1016,10 +1016,9 @@ static int add_remote_or_group(const char *name, struct string_list *list) git_config(get_remote_group, &g); if (list->nr == prev_nr) { - struct remote *remote; - if (!remote_is_configured(name)) + struct remote *remote = remote_get(name); + if (!remote_is_configured(remote)) return 0; - remote = remote_get(name); string_list_append(list, remote->name); } return 1; diff --git a/builtin/remote.c b/builtin/remote.c index 2b2ff9b7d2..d966262ae0 100644 --- a/builtin/remote.c +++ b/builtin/remote.c @@ -1441,9 +1441,9 @@ static int set_remote_branches(const char *remotename, const char **branches, strbuf_addf(&key, "remote.%s.fetch", remotename); - if (!remote_is_configured(remotename)) - die(_("No such remote '%s'"), remotename); remote = remote_get(remotename); + if (!remote_is_configured(remote)) + die(_("No such remote '%s'"), remotename); if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) { strbuf_release(&key); @@ -1498,9 +1498,9 @@ static int get_url(int argc, const char **argv) remotename = argv[0]; - if (!remote_is_configured(remotename)) - die(_("No such remote '%s'"), remotename); remote = remote_get(remotename); + if (!remote_is_configured(remote)) + die(_("No such remote '%s'"), remotename); url_nr = 0; if (push_mode) { @@ -1566,9 +1566,9 @@ static int set_url(int argc, const char **argv) if (delete_mode) oldurl = newurl; - if (!remote_is_configured(remotename)) - die(_("No such remote '%s'"), remotename); remote = remote_get(remotename); + if (!remote_is_configured(remote)) + die(_("No such remote '%s'"), remotename); if (push_mode) { strbuf_addf(&name_buf, "remote.%s.pushurl", remotename); diff --git a/remote.c b/remote.c index 011c9fb868..e4a647cb7b 100644 --- a/remote.c +++ b/remote.c @@ -713,18 +713,9 @@ struct remote *pushremote_get(const char *name) return remote_get_1(name, pushremote_for_branch); } -int remote_is_configured(const char *name) +int remote_is_configured(struct remote *remote) { - struct remotes_hash_key lookup; - struct hashmap_entry lookup_entry; - read_config(); - - init_remotes_hash(); - lookup.str = name; - lookup.len = strlen(name); - hashmap_entry_init(&lookup_entry, memhash(name, lookup.len)); - - return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL; + return remote && remote->origin; } int for_each_remote(each_remote_fn fn, void *priv) diff --git a/remote.h b/remote.h index 4fd7a0f9b2..c21fd3788c 100644 --- a/remote.h +++ b/remote.h @@ -5,6 +5,7 @@ #include "hashmap.h" enum { + REMOTE_UNCONFIGURED = 0, REMOTE_CONFIG, REMOTE_REMOTES, REMOTE_BRANCHES @@ -59,7 +60,7 @@ struct remote { struct remote *remote_get(const char *name); struct remote *pushremote_get(const char *name); -int remote_is_configured(const char *name); +int remote_is_configured(struct remote *remote); typedef int each_remote_fn(struct remote *remote, void *priv); int for_each_remote(each_remote_fn fn, void *priv); From cc8e538d45e4260b27196c3238e6f15d64236523 Mon Sep 17 00:00:00 2001 From: Thomas Gummerer Date: Tue, 16 Feb 2016 10:47:51 +0100 Subject: [PATCH 3/4] remote: actually check if remote exits When converting the git remote command to a builtin in 211c89 ("Make git-remote a builtin"), a few calls to check if a remote exists were converted from: if (!exists $remote->{$name}) { [...] to: remote = remote_get(argv[1]); if (!remote) [...] The new check is not quite correct, because remote_get() never returns NULL if a name is given. This leaves us with the somewhat cryptic error message "error: Could not remove config section 'remote.test'", if we are trying to remove a remote that does not exist, or a similar error if we try to rename a remote. Use the remote_is_configured() function to check whether the remote actually exists, and die with a more sensible error message ("No such remote: $remotename") instead if it doesn't. Signed-off-by: Thomas Gummerer Reviewed-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/remote.c | 4 ++-- t/t5505-remote.sh | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/builtin/remote.c b/builtin/remote.c index d966262ae0..981c487ef9 100644 --- a/builtin/remote.c +++ b/builtin/remote.c @@ -634,7 +634,7 @@ static int mv(int argc, const char **argv) rename.remote_branches = &remote_branches; oldremote = remote_get(rename.old); - if (!oldremote) + if (!remote_is_configured(oldremote)) die(_("No such remote: %s"), rename.old); if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG) @@ -773,7 +773,7 @@ static int rm(int argc, const char **argv) usage_with_options(builtin_remote_rm_usage, options); remote = remote_get(argv[1]); - if (!remote) + if (!remote_is_configured(remote)) die(_("No such remote: %s"), argv[1]); known_remotes.to_delete = remote; diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh index 1a8e3b81c8..f1d073f1ba 100755 --- a/t/t5505-remote.sh +++ b/t/t5505-remote.sh @@ -139,6 +139,24 @@ test_expect_success 'remove remote protects local branches' ' ) ' +test_expect_success 'remove errors out early when deleting non-existent branch' ' + ( + cd test && + echo "fatal: No such remote: foo" >expect && + test_must_fail git remote rm foo 2>actual && + test_i18ncmp expect actual + ) +' + +test_expect_success 'rename errors out early when deleting non-existent branch' ' + ( + cd test && + echo "fatal: No such remote: foo" >expect && + test_must_fail git remote rename foo bar 2>actual && + test_i18ncmp expect actual + ) +' + cat >test/expect < Date: Tue, 16 Feb 2016 10:47:52 +0100 Subject: [PATCH 4/4] remote: use remote_is_configured() for add and rename Both remote add and remote rename use a slightly different hand-rolled check if the remote exits. The hand-rolled check may have some subtle cases in which it might fail to detect when a remote already exists. One such case was fixed in fb86e32 ("git remote: allow adding remotes agreeing with url.<...>.insteadOf"). Another case is when a remote is configured as follows: [remote "foo"] vcs = bar If we try to run `git remote add foo bar` with the above remote configuration, git segfaults. This change fixes it. In addition, git remote rename $existing foo with the configuration for foo as above silently succeeds, even though foo already exists, modifying its configuration. With this patch it fails with "remote foo already exists". Signed-off-by: Thomas Gummerer Reviewed-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/remote.c | 7 ++----- t/t5505-remote.sh | 15 +++++++++++++++ 2 files changed, 17 insertions(+), 5 deletions(-) diff --git a/builtin/remote.c b/builtin/remote.c index 981c487ef9..bd57f1b29b 100644 --- a/builtin/remote.c +++ b/builtin/remote.c @@ -186,10 +186,7 @@ static int add(int argc, const char **argv) url = argv[1]; remote = remote_get(name); - if (remote && (remote->url_nr > 1 || - (strcmp(name, remote->url[0]) && - strcmp(url, remote->url[0])) || - remote->fetch_refspec_nr)) + if (remote_is_configured(remote)) die(_("remote %s already exists."), name); strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name); @@ -641,7 +638,7 @@ static int mv(int argc, const char **argv) return migrate_file(oldremote); newremote = remote_get(rename.new); - if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr)) + if (remote_is_configured(newremote)) die(_("remote %s already exists."), rename.new); strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new); diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh index f1d073f1ba..94079a0e63 100755 --- a/t/t5505-remote.sh +++ b/t/t5505-remote.sh @@ -157,6 +157,21 @@ test_expect_success 'rename errors out early when deleting non-existent branch' ) ' +test_expect_success 'add existing foreign_vcs remote' ' + test_config remote.foo.vcs bar && + echo "fatal: remote foo already exists." >expect && + test_must_fail git remote add foo bar 2>actual && + test_i18ncmp expect actual +' + +test_expect_success 'add existing foreign_vcs remote' ' + test_config remote.foo.vcs bar && + test_config remote.bar.vcs bar && + echo "fatal: remote bar already exists." >expect && + test_must_fail git remote rename foo bar 2>actual && + test_i18ncmp expect actual +' + cat >test/expect <