s3:net: factor out interact_edit()

Signed-off-by: Michael Adam <obnox@samba.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/source3/utils/interact.c b/source3/utils/interact.c
new file mode 100644
index 0000000000..a18e56c3c9
--- /dev/null
+++ b/source3/utils/interact.c
@@ -0,0 +1,126 @@
+/*
+ * Samba Unix/Linux SMB client library
+ *
+ * Copyright (C) Gregor Beck 2011
+ *
+ * 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/>.
+ */
+
+/**
+ * @brief  Functions to interact with an user.
+ * @author Gregor Beck <gb@sernet.de>
+ * @date   Aug 2011
+ *
+ */
+
+#include "interact.h"
+
+#include "includes.h"
+#include <termios.h>
+
+static const char* get_editor(void) {
+	static const char* editor = NULL;
+	if (editor == NULL) {
+		editor = getenv("VISUAL");
+		if (editor == NULL) {
+			editor = getenv("EDITOR");
+		}
+		if (editor == NULL) {
+			editor = "vi";
+		}
+	}
+	return editor;
+}
+
+int interact_prompt(const char* msg, const char* acc, char def) {
+	struct termios old_tio, new_tio;
+	int c;
+
+	tcgetattr(STDIN_FILENO, &old_tio);
+	new_tio=old_tio;
+	new_tio.c_lflag &=(~ICANON & ~ECHO);
+	tcsetattr(STDIN_FILENO, TCSANOW, &new_tio);
+
+	do {
+		d_printf("%s? [%c]\n", msg, def);
+		fflush(stdout);
+		c = getchar();
+		if (c == '\n') {
+			c = def;
+			break;
+		}
+		else if (strchr(acc, tolower(c)) != NULL) {
+			break;
+		}
+		d_printf("Invalid input '%c'\n", c);
+	} while(c != EOF);
+	tcsetattr(STDIN_FILENO, TCSANOW, &old_tio);
+	return c;
+}
+
+
+char* interact_edit(TALLOC_CTX* mem_ctx, const char* str) {
+	char fname[] = "/tmp/net_idmap_check.XXXXXX";
+	char buf[128];
+	char* ret = NULL;
+	FILE* file;
+
+	int fd = mkstemp(fname);
+	if (fd == -1) {
+		DEBUG(0, ("failed to mkstemp %s: %s\n", fname,
+			  strerror(errno)));
+		return NULL;
+	}
+
+	file  = fdopen(fd, "w");
+	if (!file) {
+		DEBUG(0, ("failed to open %s for writing: %s\n", fname,
+			  strerror(errno)));
+		close(fd);
+		unlink(fname);
+		return NULL;
+	}
+
+	fprintf(file, "%s", str);
+	fclose(file);
+
+	snprintf(buf, sizeof(buf), "%s %s\n", get_editor(), fname);
+	if (system(buf) != 0) {
+		DEBUG(0, ("failed to start editor %s: %s\n", buf,
+			  strerror(errno)));
+		unlink(fname);
+		return NULL;
+	}
+
+	file = fopen(fname, "r");
+	if (!file) {
+		DEBUG(0, ("failed to open %s for reading: %s\n", fname,
+			  strerror(errno)));
+		unlink(fname);
+		return NULL;
+	}
+	while ( fgets(buf, sizeof(buf), file) ) {
+		ret = talloc_strdup_append(ret, buf);
+	}
+	fclose(file);
+	unlink(fname);
+
+	return talloc_steal(mem_ctx, ret);
+}
+
+
+
+/*Local Variables:*/
+/*mode: c*/
+/*End:*/