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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /libcli/smbreadline/smbreadline.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libcli/smbreadline/smbreadline.c')
-rw-r--r--libcli/smbreadline/smbreadline.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/libcli/smbreadline/smbreadline.c b/libcli/smbreadline/smbreadline.c
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+++ b/libcli/smbreadline/smbreadline.c
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+/*
+ 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;
+
+#ifdef 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;
+#ifdef 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))
+{
+ char *line = NULL;
+ int fd = fileno(stdin);
+ char *ret;
+
+ /* Prompt might be NULL in non-interactive mode. */
+ if (prompt) {
+ printf("%s", prompt);
+ fflush(stdout);
+ }
+
+ line = (char *)malloc(BUFSIZ);
+ if (!line) {
+ return NULL;
+ }
+
+ while (!smb_rl_done) {
+ struct pollfd pfd;
+
+ ZERO_STRUCT(pfd);
+ pfd.fd = fd;
+ pfd.events = POLLIN|POLLHUP;
+
+ if (sys_poll_intr(&pfd, 1, 5000) == 1) {
+ ret = fgets(line, BUFSIZ, 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(fileno(stdin)) || getenv("CLI_FORCE_INTERACTIVE");
+ if (!interactive) {
+ return smb_readline_replacement(NULL, callback, completion_fn);
+ }
+
+#ifdef HAVE_LIBREADLINE
+
+ /* Aargh! Readline does bizarre 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;
+
+ /*
+ * We only want sensible characters as the word-break chars
+ * for the most part. This allows us to tab through a path.
+ */
+ rl_basic_word_break_characters = " \t\n";
+ }
+
+#ifdef HAVE_DECL_RL_EVENT_HOOK
+ if (callback)
+ rl_event_hook = (rl_hook_func_t *)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
+}