pre-receive Hook
----------------
Before any ref is updated, if $GIT_DIR/hooks/pre-receive file exists
-and is executable, it will be invoked once, with three parameters
-per ref to be updated:
+and is executable, it will be invoked once with no parameters. The
+standard input of the hook will be one line per ref to be updated:
- $GIT_DIR/hooks/pre-receive (refname sha1-old sha1-new)+
+ sha1-old SP sha1-new SP refname LF
-The refname parameter is relative to $GIT_DIR; e.g. for the master
-head this is "refs/heads/master". The two sha1 arguments after
+The refname value is relative to $GIT_DIR; e.g. for the master
+head this is "refs/heads/master". The two sha1 values before
each refname are the object names for the refname before and after
the update. Refs to be created will have sha1-old equal to 0{40},
while refs to be deleted will have sha1-new equal to 0{40}, otherwise
-----------------
After all refs were updated (or attempted to be updated), if any
ref update was successful, and if $GIT_DIR/hooks/post-receive
-file exists and is executable, it will be invoke once with three
-parameters for each successfully updated ref:
+file exists and is executable, it will be invoke once with no
+parameters. The standard input of the hook will be one line
+for each successfully updated ref:
- $GIT_DIR/hooks/post-receive (refname sha1-old sha1-new)+
+ sha1-old SP sha1-new SP refname LF
-The refname parameter is relative to $GIT_DIR; e.g. for the master
-head this is "refs/heads/master". The two sha1 arguments after
+The refname value is relative to $GIT_DIR; e.g. for the master
+head this is "refs/heads/master". The two sha1 values before
each refname are the object names for the refname before and after
the update. Refs that were created will have sha1-old equal to
0{40}, while refs that were deleted will have sha1-new equal to
#!/bin/sh
# mail out commit update information.
- while test $# -gt 0
+ while read oval nval ref
do
- if expr "$2" : '0*$' >/dev/null
+ if expr "$oval" : '0*$' >/dev/null
then
echo "Created a new ref, with the following commits:"
- git-rev-list --pretty "$2"
+ git-rev-list --pretty "$nval"
else
echo "New commits:"
- git-rev-list --pretty "$3" "^$2"
+ git-rev-list --pretty "$nval" "^$oval"
fi |
- mail -s "Changes to ref $1" commit-list@mydomain
- shift; shift; shift; # discard this ref's args
+ mail -s "Changes to ref $ref" commit-list@mydomain
done
exit 0
return error("hook fork failed");
case -ERR_RUN_COMMAND_EXEC:
return error("hook execute failed");
+ case -ERR_RUN_COMMAND_PIPE:
+ return error("hook pipe failed");
case -ERR_RUN_COMMAND_WAITPID:
return error("waitpid failed");
case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
}
}
-static int run_hook(const char *hook_name,
- struct command *first_cmd,
- int single)
+static int run_hook(const char *hook_name)
{
+ static char buf[sizeof(commands->old_sha1) * 2 + PATH_MAX + 4];
struct command *cmd;
- int argc, code;
- const char **argv;
+ struct child_process proc;
+ const char *argv[2];
+ int have_input = 0, code;
- for (argc = 0, cmd = first_cmd; cmd; cmd = cmd->next) {
+ for (cmd = commands; !have_input && cmd; cmd = cmd->next) {
if (!cmd->error_string)
- argc += 3;
- if (single)
- break;
+ have_input = 1;
}
- if (!argc || access(hook_name, X_OK) < 0)
+ if (!have_input || access(hook_name, X_OK) < 0)
return 0;
- argv = xmalloc(sizeof(*argv) * (2 + argc));
argv[0] = hook_name;
- for (argc = 1, cmd = first_cmd; cmd; cmd = cmd->next) {
+ argv[1] = NULL;
+
+ memset(&proc, 0, sizeof(proc));
+ proc.argv = argv;
+ proc.in = -1;
+ proc.stdout_to_stderr = 1;
+
+ code = start_command(&proc);
+ if (code)
+ return hook_status(code, hook_name);
+ for (cmd = commands; cmd; cmd = cmd->next) {
if (!cmd->error_string) {
- argv[argc++] = xstrdup(cmd->ref_name);
- argv[argc++] = xstrdup(sha1_to_hex(cmd->old_sha1));
- argv[argc++] = xstrdup(sha1_to_hex(cmd->new_sha1));
+ size_t n = snprintf(buf, sizeof(buf), "%s %s %s\n",
+ sha1_to_hex(cmd->old_sha1),
+ sha1_to_hex(cmd->new_sha1),
+ cmd->ref_name);
+ if (write_in_full(proc.in, buf, n) != n)
+ break;
}
- if (single)
- break;
}
- argv[argc] = NULL;
-
- code = run_command_v_opt(argv,
- RUN_COMMAND_NO_STDIN | RUN_COMMAND_STDOUT_TO_STDERR);
- while (--argc > 0)
- free((char*)argv[argc]);
- free(argv);
-
- return hook_status(code, hook_name);
+ return hook_status(finish_command(&proc), hook_name);
}
static int run_update_hook(struct command *cmd)
return;
}
- if (run_hook(pre_receive_hook, commands, 0)) {
+ if (run_hook(pre_receive_hook)) {
while (cmd) {
cmd->error_string = "pre-receive hook declined";
cmd = cmd->next;
unlink(pack_lockfile);
if (report_status)
report(unpack_status);
- run_hook(post_receive_hook, commands, 0);
+ run_hook(post_receive_hook);
run_update_post_hook(commands);
}
return 0;
cat >victim/.git/hooks/pre-receive <<'EOF'
#!/bin/sh
-echo "$@" >>$GIT_DIR/pre-receive.args
-read x; printf "$x" >$GIT_DIR/pre-receive.stdin
+printf "$@" >>$GIT_DIR/pre-receive.args
+cat - >$GIT_DIR/pre-receive.stdin
echo STDOUT pre-receive
echo STDERR pre-receive >&2
EOF
cat >victim/.git/hooks/post-receive <<'EOF'
#!/bin/sh
-echo "$@" >>$GIT_DIR/post-receive.args
-read x; printf "$x" >$GIT_DIR/post-receive.stdin
+printf "$@" >>$GIT_DIR/post-receive.args
+cat - >$GIT_DIR/post-receive.stdin
echo STDOUT post-receive
echo STDERR post-receive >&2
EOF
test -f victim/.git/post-update.stdin
'
-test_expect_success 'pre-receive hook arguments' '
- echo \
- refs/heads/master $commit0 $commit1 \
- refs/heads/tofail $commit1 $commit0 \
- | git diff - victim/.git/pre-receive.args
+test_expect_success 'pre-receive hook input' '
+ (echo $commit0 $commit1 refs/heads/master;
+ echo $commit1 $commit0 refs/heads/tofail
+ ) | git diff - victim/.git/pre-receive.stdin
'
test_expect_success 'update hook arguments' '
) | git diff - victim/.git/update.args
'
-test_expect_success 'post-receive hook arguments' '
- echo refs/heads/master $commit0 $commit1 |
- git diff - victim/.git/post-receive.args
+test_expect_success 'post-receive hook input' '
+ echo $commit0 $commit1 refs/heads/master |
+ git diff - victim/.git/post-receive.stdin
'
test_expect_success 'post-update hook arguments' '
'
test_expect_success 'all hook stdin is /dev/null' '
- ! test -s victim/.git/pre-receive.stdin &&
! test -s victim/.git/update.stdin &&
- ! test -s victim/.git/post-receive.stdin &&
! test -s victim/.git/post-update.stdin
'
+test_expect_success 'all *-receive hook args are empty' '
+ ! test -s victim/.git/pre-receive.args &&
+ ! test -s victim/.git/post-receive.args
+'
+
test_expect_failure 'send-pack produced no output' '
test -s send.out
'