samba: share readline wrappers among all buildsystems.

Guenther

5 files changed, 346 insertions, 0 deletions

diff --git a/libcli/smbreadline/readline.m4 b/libcli/smbreadline/readline.m4
new file mode 100644
index 00000000000..f450cacac99
--- /dev/null
+++ b/libcli/smbreadline/readline.m4
@@ -0,0 +1,96 @@
+###############################################
+# Readline included by default unless explicitly asked not to
+test "${with_readline+set}" != "set" && with_readline=yes
+
+EXTERNAL_READLINE=no
+# test for where we get readline() from
+AC_MSG_CHECKING(whether to use readline)
+AC_ARG_WITH(readline,
+[AS_HELP_STRING([--with-readline[=DIR]], [Look for readline include/libs in DIR (default=auto)])],
+[  case "$with_readline" in
+  yes)
+    AC_MSG_RESULT(yes)
+
+    AC_CHECK_HEADERS(readline.h history.h readline/readline.h)
+    AC_CHECK_HEADERS(readline/history.h)
+
+    AC_CHECK_HEADERS(readline.h readline/readline.h,[
+      for termlib in ncurses curses termcap terminfo termlib tinfo; do
+       AC_CHECK_LIB(${termlib}, tgetent, [TERMLIBS="-l${termlib}"; break])
+      done
+      AC_CHECK_LIB(readline, rl_callback_handler_install,
+       [TERMLIBS="-lreadline $TERMLIBS"
+       EXTERNAL_READLINE=yes
+       break], [TERMLIBS=], $TERMLIBS)])
+    ;;
+  no)
+    AC_MSG_RESULT(no)
+    ;;
+  *)
+    AC_MSG_RESULT(yes)
+
+    # Needed for AC_CHECK_HEADERS and AC_CHECK_LIB to look at
+    # alternate readline path
+    _ldflags=${LDFLAGS}
+    _cppflags=${CPPFLAGS}
+
+    # Add additional search path
+    LDFLAGS="-L$with_readline/lib $LDFLAGS"
+    CPPFLAGS="-I$with_readline/include $CPPFLAGS"
+
+    AC_CHECK_HEADERS(readline.h history.h readline/readline.h)
+    AC_CHECK_HEADERS(readline/history.h)
+
+    AC_CHECK_HEADERS(readline.h readline/readline.h,[
+      for termlib in ncurses curses termcap terminfo termlib; do
+       AC_CHECK_LIB(${termlib}, tgetent, [TERMLIBS="-l${termlib}"; break])
+      done
+      AC_CHECK_LIB(readline, rl_callback_handler_install,
+       [TERMLDFLAGS="-L$with_readline/lib"
+       TERMCPPFLAGS="-I$with_readline/include"
+       LDFLAGS="-L$with_readline/lib $LDFLAGS"
+       CPPFLAGS="-I$with_readline/include $CPPFLAGS"
+       TERMLIBS="-lreadline $TERMLIBS"
+       EXTERNAL_READLINE=yes
+       break], [TERMLIBS= CPPFLAGS=$_cppflags], $TERMLIBS)])
+
+    ;;
+  esac],
+  AC_MSG_RESULT(no)
+)
+
+# The readline API changed slightly from readline3 to readline4, so
+# code will generate warnings on one of them unless we have a few
+# special cases.
+AC_CHECK_LIB(readline, rl_completion_matches,
+	     [AC_DEFINE(HAVE_NEW_LIBREADLINE, 1,
+			[Do we have rl_completion_matches?])],
+	     [],
+	     [$TERMLIBS])
+
+# not all readline libs have rl_event_hook or history_list
+AC_CHECK_DECLS(rl_event_hook, [], [], [
+    #include <stdio.h>
+    #include <readline/readline.h>
+])
+AC_CHECK_LIB(readline, history_list,
+	     [AC_DEFINE(HAVE_HISTORY_LIST, 1, [Do we have history_list?])],
+	     [],
+	     [$TERMLIBS])
+
+AC_CHECK_LIB(readline, add_history,
+	     [AC_DEFINE(HAVE_ADD_HISTORY, 1, [Do we have add_history?])],
+	     [],
+	     [$TERMLIBS])
+
+AC_MSG_CHECKING(whether to use extern readline)
+if test x"$EXTERNAL_READLINE" = x"yes"; then
+	AC_MSG_RESULT(yes)
+	AC_DEFINE(HAVE_LIBREADLINE,1,[Whether the system has readline])
+	SMB_SUBSYSTEM(SMBREADLINE, [\$(smbreadlinesrcdir)/smbreadline.o], [READLINE])
+	SMB_EXT_LIB(READLINE, [${TERMLIBS}])
+	SMB_ENABLE(READLINE,YES)
+else
+	SMB_SUBSYSTEM(SMBREADLINE, [\$(smbreadlinesrcdir)/smbreadline.o], [])
+	AC_MSG_RESULT(no)
+fi
diff --git a/libcli/smbreadline/smbreadline.c b/libcli/smbreadline/smbreadline.c
new file mode 100644
index 00000000000..f8441ac5a34
--- /dev/null
+++ b/libcli/smbreadline/smbreadline.c
@@ -0,0 +1,180 @@
+/*
+   Unix SMB/CIFS implementation.
+   Samba readline wrapper implementation
+   Copyright (C) Simo Sorce 2001
+   Copyright (C) Andrew Tridgell 2001
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "../lib/util/select.h"
+#include "system/filesys.h"
+#include "system/select.h"
+#include "system/readline.h"
+#include "libcli/smbreadline/smbreadline.h"
+
+#undef malloc
+
+#ifdef HAVE_LIBREADLINE
+#  ifdef HAVE_READLINE_READLINE_H
+#    include <readline/readline.h>
+#    ifdef HAVE_READLINE_HISTORY_H
+#      include <readline/history.h>
+#    endif
+#  else
+#    ifdef HAVE_READLINE_H
+#      include <readline.h>
+#      ifdef HAVE_HISTORY_H
+#        include <history.h>
+#      endif
+#    else
+#      undef HAVE_LIBREADLINE
+#    endif
+#  endif
+#endif
+
+static bool smb_rl_done;
+
+#if HAVE_LIBREADLINE
+/*
+ * MacOS/X does not have rl_done in readline.h, but
+ * readline.so has it
+ */
+extern int rl_done;
+#endif
+
+void smb_readline_done(void)
+{
+	smb_rl_done = true;
+#if HAVE_LIBREADLINE
+	rl_done = 1;
+#endif
+}
+
+/****************************************************************************
+ Display the prompt and wait for input. Call callback() regularly
+****************************************************************************/
+
+static char *smb_readline_replacement(const char *prompt, void (*callback)(void),
+				char **(completion_fn)(const char *text, int start, int end))
+{
+	fd_set fds;
+	char *line = NULL;
+	struct timeval timeout;
+	int fd = x_fileno(x_stdin);
+	char *ret;
+
+	/* Prompt might be NULL in non-interactive mode. */
+	if (prompt) {
+		x_fprintf(x_stdout, "%s", prompt);
+		x_fflush(x_stdout);
+	}
+
+	line = (char *)malloc(BUFSIZ);
+	if (!line) {
+		return NULL;
+	}
+
+	while (!smb_rl_done) {
+		timeout.tv_sec = 5;
+		timeout.tv_usec = 0;
+
+		FD_ZERO(&fds);
+		FD_SET(fd,&fds);
+
+		if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 1) {
+			ret = x_fgets(line, BUFSIZ, x_stdin);
+			if (ret == 0) {
+				SAFE_FREE(line);
+			}
+			return ret;
+		}
+		if (callback) {
+			callback();
+		}
+	}
+	SAFE_FREE(line);
+	return NULL;
+}
+
+/****************************************************************************
+ Display the prompt and wait for input. Call callback() regularly.
+****************************************************************************/
+
+char *smb_readline(const char *prompt, void (*callback)(void),
+		   char **(completion_fn)(const char *text, int start, int end))
+{
+	char *ret;
+	bool interactive;
+
+	interactive = isatty(x_fileno(x_stdin)) || getenv("CLI_FORCE_INTERACTIVE");
+	if (!interactive) {
+		return smb_readline_replacement(NULL, callback, completion_fn);
+	}
+
+#if HAVE_LIBREADLINE
+
+	/* Aargh!  Readline does bizzare things with the terminal width
+	that mucks up expect(1).  Set CLI_NO_READLINE in the environment
+	to force readline not to be used. */
+
+	if (getenv("CLI_NO_READLINE"))
+		return smb_readline_replacement(prompt, callback, completion_fn);
+
+	if (completion_fn) {
+		/* The callback prototype has changed slightly between
+		different versions of Readline, so the same function
+		works in all of them to date, but we get compiler
+		warnings in some.  */
+		rl_attempted_completion_function = RL_COMPLETION_CAST completion_fn;
+	}
+
+#if HAVE_DECL_RL_EVENT_HOOK
+	if (callback)
+		rl_event_hook = (Function *)callback;
+#endif
+	ret = readline(prompt);
+	if (ret && *ret)
+		add_history(ret);
+
+#else
+	ret = smb_readline_replacement(prompt, callback, completion_fn);
+#endif
+
+	return ret;
+}
+
+/****************************************************************************
+ * return line buffer text
+ ****************************************************************************/
+const char *smb_readline_get_line_buffer(void)
+{
+#if defined(HAVE_LIBREADLINE)
+	return rl_line_buffer;
+#else
+	return NULL;
+#endif
+}
+
+
+/****************************************************************************
+ * set completion append character
+ ***************************************************************************/
+void smb_readline_ca_char(char c)
+{
+#if defined(HAVE_LIBREADLINE)
+	rl_completion_append_character = c;
+#endif
+}
diff --git a/libcli/smbreadline/smbreadline.h b/libcli/smbreadline/smbreadline.h
new file mode 100644
index 00000000000..102106f2626
--- /dev/null
+++ b/libcli/smbreadline/smbreadline.h
@@ -0,0 +1,10 @@
+#ifndef __SMBREADLINE_H__
+#define __SMBREADLINE_H__
+
+char *smb_readline(const char *prompt, void (*callback)(void),
+		   char **(completion_fn)(const char *text, int start, int end));
+const char *smb_readline_get_line_buffer(void);
+void smb_readline_ca_char(char c);
+void smb_readline_done(void);
+
+#endif /* __SMBREADLINE_H__ */
diff --git a/libcli/smbreadline/wscript_build b/libcli/smbreadline/wscript_build
new file mode 100644
index 00000000000..17699eafa2a
--- /dev/null
+++ b/libcli/smbreadline/wscript_build
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+
+
+termlib=bld.env.READLINE_TERMLIB or ''
+
+bld.SAMBA_SUBSYSTEM('SMBREADLINE',
+                    source='smbreadline.c',
+                    deps=termlib + ' readline talloc')
diff --git a/libcli/smbreadline/wscript_configure b/libcli/smbreadline/wscript_configure
new file mode 100644
index 00000000000..cec65268983
--- /dev/null
+++ b/libcli/smbreadline/wscript_configure
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+
+
+conf.CHECK_HEADERS('readline.h history.h readline/readline.h readline/history.h')
+for termlib in ['ncurses', 'curses', 'termcap', 'terminfo', 'termlib', 'tinfo']:
+    if conf.CHECK_FUNCS_IN('tgetent', termlib):
+        conf.env['READLINE_TERMLIB'] = termlib
+        break
+
+conf.CHECK_CODE('''
+#ifdef HAVE_READLINE_READLINE_H
+#  include <readline/readline.h>
+#  ifdef HAVE_READLINE_HISTORY_H
+#    include <readline/history.h>
+#  endif
+#else
+#  ifdef HAVE_READLINE_H
+#    include <readline.h>
+#    ifdef HAVE_HISTORY_H
+#      include <history.h>
+#    endif
+#  endif
+#endif
+int main(void) {rl_completion_t f; return 0;}
+''',
+'HAVE_RL_COMPLETION_FUNC_T', execute=False, addmain=False,
+msg='Checking for rl_completion_t')
+
+conf.CHECK_CODE('''
+#ifdef HAVE_READLINE_READLINE_H
+#  include <readline/readline.h>
+#  ifdef HAVE_READLINE_HISTORY_H
+#    include <readline/history.h>
+#  endif
+#else
+#  ifdef HAVE_READLINE_H
+#    include <readline.h>
+#    ifdef HAVE_HISTORY_H
+#      include <history.h>
+#    endif
+#  endif
+#endif
+int main(void) {CPPFunction f; return 0;}
+''',
+'HAVE_CPPFUNCTION', execute=False, addmain=False,
+msg='Checking for CPPFunction')
+
+if conf.CHECK_FUNCS_IN('rl_completion_matches', 'readline'):
+    conf.DEFINE('HAVE_NEW_LIBREADLINE', 1)
+
+if conf.CHECK_FUNCS_IN('rl_event_hook', 'readline'):
+    conf.DEFINE('HAVE_HISTORY_LIST', 1)