From 7256e6b4d6439695fc1221b00ae0b876006ffe75 Mon Sep 17 00:00:00 2001
From: james <james@e7ae566f-a301-0410-adde-c780ea21d3b5>
Date: Mon, 22 Oct 2007 19:19:21 +0000
Subject: Modified command line and config file parser to allow quoted strings
 using single quotes ('') (Alon Bar-Lev).

git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2414 e7ae566f-a301-0410-adde-c780ea21d3b5
---
 openvpn.8 |  7 ++++---
 options.c | 17 ++++++++++++++++-
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/openvpn.8 b/openvpn.8
index aa48e70..287e2e1 100644
--- a/openvpn.8
+++ b/openvpn.8
@@ -380,13 +380,14 @@ can be removed, and the command can be given as
 Note that
 configuration files can be nested to a reasonable depth.
 
-Double quotation characters ("") can be used
-to enclose single parameters containing whitespace,
+Double quotation or single quotation characters ("", '')
+can be used to enclose single parameters containing whitespace,
 and "#" or ";" characters in the first column
 can be used to denote comments.
 
 Note that OpenVPN 2.0 and higher performs backslash-based shell
-escaping, so the following mappings should be observed:
+escaping for characters not in single quotations,
+so the following mappings should be observed:
 
 .RS
 .ft 3
diff --git a/options.c b/options.c
index f2310fc..5cc7f23 100644
--- a/options.c
+++ b/options.c
@@ -2577,6 +2577,7 @@ parse_line (const char *line,
   const int STATE_READING_QUOTED_PARM = 1;
   const int STATE_READING_UNQUOTED_PARM = 2;
   const int STATE_DONE = 3;
+  const int STATE_READING_SQUOTED_PARM = 4;
 
   const char *error_prefix = "";
 
@@ -2599,7 +2600,7 @@ parse_line (const char *line,
       in = *c;
       out = 0;
 
-      if (!backslash && in == '\\')
+      if (!backslash && in == '\\' && state != STATE_READING_SQUOTED_PARM)
 	{
 	  backslash = true;
 	}
@@ -2613,6 +2614,8 @@ parse_line (const char *line,
 		    break;
 		  if (!backslash && in == '\"')
 		    state = STATE_READING_QUOTED_PARM;
+		  else if (!backslash && in == '\'')
+		    state = STATE_READING_SQUOTED_PARM;
 		  else
 		    {
 		      out = in;
@@ -2634,6 +2637,13 @@ parse_line (const char *line,
 	      else
 		out = in;
 	    }
+	  else if (state == STATE_READING_SQUOTED_PARM)
+	    {
+	      if (in == '\'')
+	        state = STATE_DONE;
+	      else
+	        out = in;
+	    }
 	  if (state == STATE_DONE)
 	    {
 	      /* ASSERT (parm_len > 0); */
@@ -2681,6 +2691,11 @@ parse_line (const char *line,
       msg (msglevel, "%sOptions error: No closing quotation (\") in %s:%d", error_prefix, file, line_num);
       return 0;
     }
+  if (state == STATE_READING_SQUOTED_PARM)
+    {
+      msg (msglevel, "%sOptions error: No closing single quotation (\') in %s:%d", error_prefix, file, line_num);
+      return 0;
+    }
   if (state != STATE_INITIAL)
     {
       msg (msglevel, "%sOptions error: Residual parse state (%d) in %s:%d", error_prefix, state, file, line_num);
-- 
cgit