forbid movement ANSI escape sequence in signature files

git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5385 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 25 insertions, 1 deletions

diff --git a/pttbbs/mbbsd/edit.c b/pttbbs/mbbsd/edit.c
index 46d01980..25a25976 100644
--- a/pttbbs/mbbsd/edit.c
+++ b/pttbbs/mbbsd/edit.c
@@ -1440,6 +1440,28 @@ quote_strip_ansi_inline(unsigned char *is)
     *os = 0;
 }
 
+static int
+process_ansi_movecmd(char *s, int replace) {
+    const char *pattern_movecmd = "ABCDfjHJRu";
+    const char *pattern_ansi_code = "0123456789;,[";
+
+    while (*s) {
+        char *esc = strchr(s, ESC_CHR);
+        if (!esc)
+            return 0;
+        s = ++esc;
+        while (*esc && strchr(pattern_ansi_code, *esc))
+            esc++;
+        if (strchr(pattern_movecmd, *esc)) {
+            if (replace == YEA)
+                *esc = 's';
+            else
+                return 1;
+        }
+    }
+    return 0;
+}
+
 static void
 do_quote(void)
 {
@@ -1795,8 +1817,10 @@ browse_sigs:
 		    if ((fs = fopen(fpath, "r"))) {
 			fputs("\n--\n", fp);
 			for (i = 0; i < MAX_SIGLINES &&
-				fgets(buf, sizeof(buf), fs); i++)
+                                    fgets(buf, sizeof(buf), fs); i++) {
+                            process_ansi_movecmd(buf, YEA);
 			    fputs(buf, fp);
+                        }
 			fclose(fs);
 			fpath[i] = ch;
 		    }