cygwin 1.7 build fixes

It's less accepting of signed char ... insisting that e.g. tolower()
not receive one as a parameter.

It's probably good to phase out such usage, given the number of bugs
that lurk in the vicinity (assumptions that char is unsigned), so fix
these even though such usage is actually legal.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

1 files changed, 7 insertions, 7 deletions

diff --git a/src/server/telnet_server.c b/src/server/telnet_server.c
index 929c1c16..92e7480b 100644
--- a/src/server/telnet_server.c
+++ b/src/server/telnet_server.c
@@ -195,8 +195,8 @@ void telnet_clear_line(struct connection *connection, struct telnet_connection *
 int telnet_input(struct connection *connection)
 {
 	int bytes_read;
-	char buffer[TELNET_BUFFER_SIZE];
-	char *buf_p;
+	unsigned char buffer[TELNET_BUFFER_SIZE];
+	unsigned char *buf_p;
 	struct telnet_connection *t_con = connection->priv;
 	struct command_context *command_context = connection->cmd_ctx;
 
@@ -216,7 +216,7 @@ int telnet_input(struct connection *connection)
 		switch (t_con->state)
 		{
 			case TELNET_STATE_DATA:
-				if (*buf_p == '\xff')
+				if (*buf_p == 0xff)
 				{
 					t_con->state = TELNET_STATE_IAC;
 				}
@@ -395,16 +395,16 @@ int telnet_input(struct connection *connection)
 			case TELNET_STATE_IAC:
 				switch (*buf_p)
 				{
-					case '\xfe':
+					case 0xfe:
 						t_con->state = TELNET_STATE_DONT;
 						break;
-					case '\xfd':
+					case 0xfd:
 						t_con->state = TELNET_STATE_DO;
 						break;
-					case '\xfc':
+					case 0xfc:
 						t_con->state = TELNET_STATE_WONT;
 						break;
-					case '\xfb':
+					case 0xfb:
 						t_con->state = TELNET_STATE_WILL;
 						break;
 				}