diff options
Diffstat (limited to 'builtin-receive-pack.c')
| -rw-r--r-- | builtin-receive-pack.c | 142 |
1 files changed, 110 insertions, 32 deletions
diff --git a/builtin-receive-pack.c b/builtin-receive-pack.c index db67c3162c..849f1fe6f9 100644 --- a/builtin-receive-pack.c +++ b/builtin-receive-pack.c @@ -9,22 +9,25 @@ #include "remote.h" #include "transport.h" -static const char receive_pack_usage[] = "git-receive-pack <git-dir>"; +static const char receive_pack_usage[] = "git receive-pack <git-dir>"; enum deny_action { + DENY_UNCONFIGURED, DENY_IGNORE, DENY_WARN, DENY_REFUSE, }; -static int deny_deletes = 0; -static int deny_non_fast_forwards = 0; -static enum deny_action deny_current_branch = DENY_WARN; +static int deny_deletes; +static int deny_non_fast_forwards; +static enum deny_action deny_current_branch = DENY_UNCONFIGURED; +static enum deny_action deny_delete_current = DENY_UNCONFIGURED; static int receive_fsck_objects; static int receive_unpack_limit = -1; static int transfer_unpack_limit = -1; static int unpack_limit = 100; static int report_status; +static const char *head_name; static char capabilities[] = " report-status delete-refs "; static int capabilities_sent; @@ -76,6 +79,11 @@ static int receive_pack_config(const char *var, const char *value, void *cb) return 0; } + if (strcmp(var, "receive.denydeletecurrent") == 0) { + deny_delete_current = parse_deny_action(var, value); + return 0; + } + return git_default_config(var, value, cb); } @@ -136,7 +144,7 @@ static int hook_status(int code, const char *hook_name) } } -static int run_hook(const char *hook_name) +static int run_receive_hook(const char *hook_name) { static char buf[sizeof(commands->old_sha1) * 2 + PATH_MAX + 4]; struct command *cmd; @@ -202,16 +210,67 @@ static int run_update_hook(struct command *cmd) static int is_ref_checked_out(const char *ref) { - unsigned char sha1[20]; - const char *head; - if (is_bare_repository()) return 0; - head = resolve_ref("HEAD", sha1, 0, NULL); - if (!head) + if (!head_name) return 0; - return !strcmp(head, ref); + return !strcmp(head_name, ref); +} + +static char *warn_unconfigured_deny_msg[] = { + "Updating the currently checked out branch may cause confusion,", + "as the index and work tree do not reflect changes that are in HEAD.", + "As a result, you may see the changes you just pushed into it", + "reverted when you run 'git diff' over there, and you may want", + "to run 'git reset --hard' before starting to work to recover.", + "", + "You can set 'receive.denyCurrentBranch' configuration variable to", + "'refuse' in the remote repository to forbid pushing into its", + "current branch." + "", + "To allow pushing into the current branch, you can set it to 'ignore';", + "but this is not recommended unless you arranged to update its work", + "tree to match what you pushed in some other way.", + "", + "To squelch this message, you can set it to 'warn'.", + "", + "Note that the default will change in a future version of git", + "to refuse updating the current branch unless you have the", + "configuration variable set to either 'ignore' or 'warn'." +}; + +static void warn_unconfigured_deny(void) +{ + int i; + for (i = 0; i < ARRAY_SIZE(warn_unconfigured_deny_msg); i++) + warning("%s", warn_unconfigured_deny_msg[i]); +} + +static char *warn_unconfigured_deny_delete_current_msg[] = { + "Deleting the current branch can cause confusion by making the next", + "'git clone' not check out any file.", + "", + "You can set 'receive.denyDeleteCurrent' configuration variable to", + "'refuse' in the remote repository to disallow deleting the current", + "branch.", + "", + "You can set it to 'ignore' to allow such a delete without a warning.", + "", + "To make this warning message less loud, you can set it to 'warn'.", + "", + "Note that the default will change in a future version of git", + "to refuse deleting the current branch unless you have the", + "configuration variable set to either 'ignore' or 'warn'." +}; + +static void warn_unconfigured_deny_delete_current(void) +{ + int i; + for (i = 0; + i < ARRAY_SIZE(warn_unconfigured_deny_delete_current_msg); + i++) + warning("%s", warn_unconfigured_deny_delete_current_msg[i]); } static const char *update(struct command *cmd) @@ -227,22 +286,20 @@ static const char *update(struct command *cmd) return "funny refname"; } - switch (deny_current_branch) { - case DENY_IGNORE: - break; - case DENY_WARN: - if (!is_ref_checked_out(name)) + if (is_ref_checked_out(name)) { + switch (deny_current_branch) { + case DENY_IGNORE: break; - warning("updating the currently checked out branch; this may" - " cause confusion,\n" - "as the index and working tree do not reflect changes" - " that are now in HEAD."); - break; - case DENY_REFUSE: - if (!is_ref_checked_out(name)) + case DENY_UNCONFIGURED: + case DENY_WARN: + warning("updating the current branch"); + if (deny_current_branch == DENY_UNCONFIGURED) + warn_unconfigured_deny(); break; - error("refusing to update checked out branch: %s", name); - return "branch is currently checked out"; + case DENY_REFUSE: + error("refusing to update checked out branch: %s", name); + return "branch is currently checked out"; + } } if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) { @@ -250,12 +307,30 @@ static const char *update(struct command *cmd) "but I can't find it!", sha1_to_hex(new_sha1)); return "bad pack"; } - if (deny_deletes && is_null_sha1(new_sha1) && - !is_null_sha1(old_sha1) && - !prefixcmp(name, "refs/heads/")) { - error("denying ref deletion for %s", name); - return "deletion prohibited"; + + if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { + if (deny_deletes && !prefixcmp(name, "refs/heads/")) { + error("denying ref deletion for %s", name); + return "deletion prohibited"; + } + + if (!strcmp(name, head_name)) { + switch (deny_delete_current) { + case DENY_IGNORE: + break; + case DENY_WARN: + case DENY_UNCONFIGURED: + if (deny_delete_current == DENY_UNCONFIGURED) + warn_unconfigured_deny_delete_current(); + warning("deleting the current branch"); + break; + case DENY_REFUSE: + error("refusing to delete the current branch: %s", name); + return "deletion of the current branch prohibited"; + } + } } + if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && !is_null_sha1(old_sha1) && !prefixcmp(name, "refs/heads/")) { @@ -349,6 +424,7 @@ static void run_update_post_hook(struct command *cmd) static void execute_commands(const char *unpacker_error) { struct command *cmd = commands; + unsigned char sha1[20]; if (unpacker_error) { while (cmd) { @@ -358,7 +434,7 @@ static void execute_commands(const char *unpacker_error) return; } - if (run_hook(pre_receive_hook)) { + if (run_receive_hook(pre_receive_hook)) { while (cmd) { cmd->error_string = "pre-receive hook declined"; cmd = cmd->next; @@ -366,6 +442,8 @@ static void execute_commands(const char *unpacker_error) return; } + head_name = resolve_ref("HEAD", sha1, 0, NULL); + while (cmd) { cmd->error_string = update(cmd); cmd = cmd->next; @@ -627,7 +705,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix) unlink(pack_lockfile); if (report_status) report(unpack_status); - run_hook(post_receive_hook); + run_receive_hook(post_receive_hook); run_update_post_hook(commands); } return 0; |