From e7a69008e6d8b0750e74bcec85ac1ee92703fa42 Mon Sep 17 00:00:00 2001
From: Wayne Davison <wayned@samba.org>
Date: Mon, 19 Jul 2004 08:27:17 +0000
Subject: [PATCH] Do a better job of writing out the BATCH.sh file (i.e. quote
 special characters and spaces in args, omit all the source args, omit the
 include/exclude args if we can).

---
 batch.c | 82 +++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 57 insertions(+), 25 deletions(-)

diff --git a/batch.c b/batch.c
index 8d3f7961..e84fe36f 100644
--- a/batch.c
+++ b/batch.c
@@ -9,11 +9,42 @@
 #include <time.h>
 
 extern char *batch_name;
+extern int delete_mode;
+extern int delete_excluded;
 
-void write_batch_argvs_file(int argc, char *argv[])
+static void write_arg(int fd, char *arg)
+{
+	char *x, *s;
+
+	if (*arg == '-' && (x = strchr(arg, '=')) != NULL) {
+		write(fd, arg, x - arg + 1);
+		arg += x - arg + 1;
+	}
+
+	if (strpbrk(arg, " \"'&;|[]()$#!*?^\\") != NULL) {
+		write(fd, "'", 1);
+		for (s = arg; (x = strchr(s, '\'')) != NULL; s = x + 1) {
+			write(fd, s, x - s + 1);
+			write(fd, "'", 1);
+		}
+		write(fd, s, strlen(s));
+		write(fd, "'", 1);
+		return;
+	}
+
+	write(fd, arg, strlen(arg));
+}
+
+/* This routine tries to write out an equivalent --read-batch command
+ * given the user's --write-batch args.  However, it doesn't really
+ * understand most of the options, so it uses some overly simple
+ * heuristics to munge the command line into something that will
+ * (hopefully) work. */
+void write_batch_shell_file(int argc, char *argv[], int file_arg_cnt)
 {
 	int fd, i;
-	char filename[MAXPATHLEN];
+	char *p, filename[MAXPATHLEN];
+	int need_excludes = delete_mode && !delete_excluded;
 
 	stringjoin(filename, sizeof filename,
 		   batch_name, ".sh", NULL);
@@ -24,34 +55,35 @@ void write_batch_argvs_file(int argc, char *argv[])
 		exit_cleanup(1);
 	}
 
-	/* Write argvs info to BATCH.rsync_argvs file */
-	for (i = 0; i < argc; i++) {
-		if (i == argc - 2) /* Skip source directory on cmdline */
-			continue;
-		if (strncmp(argv[i], "--files-from", 12) == 0) {
-			if (strchr(argv[i], '=') == NULL)
+	/* Write argvs info to BATCH.sh file */
+	write_arg(fd, argv[0]);
+	for (i = 1; i < argc - file_arg_cnt; i++) {
+		p = argv[i];
+		if (strncmp(p, "--files-from", 12) == 0
+		    || (!need_excludes && (strncmp(p, "--include", 9) == 0
+					|| strncmp(p, "--exclude", 9) == 0))) {
+			if (strchr(p, '=') == NULL)
 				i++;
 			continue;
 		}
-		if (i != 0)
-			write(fd, " ", 1);
-		if (strncmp(argv[i], "--write-batch", 13) == 0) {
-			write(fd, "--read", 6);
-			write(fd, argv[i] + 7, strlen(argv[i] + 7));
-		} else if (i == argc - 1) {
-			char *p = find_colon(argv[i]);
-			if (p) {
-				if (*++p == ':')
-					p++;
-			} else
-				p = argv[i];
-			write(fd, "${1:-", 5);
-			write(fd, p, strlen(p));
-			write(fd, "}", 1);
+		write(fd, " ", 1);
+		if (strncmp(p, "--write-batch", 13) == 0) {
+			write(fd, "--read-batch", 12);
+			if (p[13] == '=') {
+				write(fd, "=", 1);
+				write_arg(fd, p + 14);
+			}
 		} else
-			write(fd, argv[i], strlen(argv[i]));
+			write_arg(fd, p);
 	}
-	if (write(fd, "\n", 1) != 1 || close(fd) < 0) {
+	if ((p = find_colon(argv[argc - 1])) != NULL) {
+		if (*++p == ':')
+			p++;
+	} else
+		p = argv[argc - 1];
+	write(fd, " ${1:-", 6);
+	write_arg(fd, p);
+	if (write(fd, "}\n", 2) != 2 || close(fd) < 0) {
 		rsyserr(FERROR, errno, "Batch file %s write error", filename);
 		exit_cleanup(1);
 	}
-- 
2.34.1