From 8cb69713bee1d6169d7dc820ca25375f95bd99c2 Mon Sep 17 00:00:00 2001
From: jsorg71 <jsorg71>
Date: Mon, 2 Aug 2004 02:45:53 +0000
Subject: [PATCH] early work

---
 xrdp/xrdp_iso.c | 10 +++++---
 xrdp/xrdp_mcs.c | 68 ++++++++++++++++++++++++++++++++-----------------
 xrdp/xrdp_tcp.c | 18 ++++++++++++-
 3 files changed, 68 insertions(+), 28 deletions(-)

diff --git a/xrdp/xrdp_iso.c b/xrdp/xrdp_iso.c
index d2ec20a0..8bbbcbdc 100644
--- a/xrdp/xrdp_iso.c
+++ b/xrdp/xrdp_iso.c
@@ -27,7 +27,7 @@ struct xrdp_iso* xrdp_iso_create(struct xrdp_mcs* owner)
   struct xrdp_iso* self;
 
   self = (struct xrdp_iso*)g_malloc(sizeof(struct xrdp_iso), 1);
-  self->owner = owner;
+  self->mcs_layer = owner;
   self->in_s = owner->in_s;
   self->out_s = owner->out_s;
   self->tcp_layer = xrdp_tcp_create(self);
@@ -77,10 +77,12 @@ int xrdp_iso_recv(struct xrdp_iso* self)
 {
   int code;
 
+  DEBUG(("   in xrdp_iso_recv\n\r"));
   if (xrdp_iso_recv_msg(self, &code) != 0)
     return 1;
   if (code != ISO_PDU_DT)
     return 1;
+  DEBUG(("   out xrdp_iso_recv\n\r"));
   return 0;
 }
 
@@ -94,8 +96,8 @@ int xrdp_iso_send_msg(struct xrdp_iso* self, int code)
   out_uint16_be(self->out_s, 11); /* length */
   out_uint8(self->out_s, 8);
   out_uint8(self->out_s, code);
-  out_uint16(self->out_s, 0);
-  out_uint16(self->out_s, 0);
+  out_uint16_le(self->out_s, 0);
+  out_uint16_le(self->out_s, 0);
   out_uint8(self->out_s, 0);
   s_mark_end(self->out_s);
   if (xrdp_tcp_send(self->tcp_layer) != 0)
@@ -109,12 +111,14 @@ int xrdp_iso_incoming(struct xrdp_iso* self)
 {
   int code;
 
+  DEBUG(("   in xrdp_iso_incoming\n\r"));
   if (xrdp_iso_recv_msg(self, &code) != 0)
     return 1;
   if (code != ISO_PDU_CR)
     return 1;
   if (xrdp_iso_send_msg(self, ISO_PDU_CC) != 0)
     return 1;
+  DEBUG(("   out xrdp_iso_incoming\n\r"));
   return 0;
 }
 
diff --git a/xrdp/xrdp_mcs.c b/xrdp/xrdp_mcs.c
index 366f4b46..4cc24b89 100644
--- a/xrdp/xrdp_mcs.c
+++ b/xrdp/xrdp_mcs.c
@@ -27,7 +27,7 @@ struct xrdp_mcs* xrdp_mcs_create(struct xrdp_sec* owner)
   struct xrdp_mcs* self;
 
   self = (struct xrdp_mcs*)g_malloc(sizeof(struct xrdp_mcs), 1);
-  self->owner = owner;
+  self->sec_layer = owner;
   self->in_s = owner->in_s;
   self->out_s = owner->out_s;
   self->userid = 1;
@@ -45,6 +45,23 @@ void xrdp_mcs_delete(struct xrdp_mcs* self)
   g_free(self);
 }
 
+/*****************************************************************************/
+/* returns error */
+int xrdp_mcs_send_cjcf(struct xrdp_mcs* self, int chanid)
+{
+  if (xrdp_iso_init(self->iso_layer, 8) != 0)
+    return 1;
+  out_uint8(self->out_s, (MCS_CJCF << 2) | 2);
+  out_uint8(self->out_s, 0);
+  out_uint16_be(self->out_s, self->userid);
+  out_uint16_be(self->out_s, chanid);
+  out_uint16_be(self->out_s, chanid);
+  s_mark_end(self->out_s);
+  if (xrdp_iso_send(self->iso_layer) != 0)
+    return 1;
+  return 0;
+}
+
 /*****************************************************************************/
 /* returns error */
 int xrdp_mcs_recv(struct xrdp_mcs* self)
@@ -53,16 +70,32 @@ int xrdp_mcs_recv(struct xrdp_mcs* self)
   int opcode;
   int len;
 
-  if (xrdp_iso_recv(self->iso_layer) != 0)
-    return 1;
-  in_uint8(self->in_s, opcode);
-  appid = opcode >> 2;
+  DEBUG(("  in xrdp_mcs_recv\n\r"));
+  while (1)
+  {
+    if (xrdp_iso_recv(self->iso_layer) != 0)
+      return 1;
+    in_uint8(self->in_s, opcode);
+    appid = opcode >> 2;
+    if (appid == MCS_DPUM)
+      return 1;
+    if (appid == MCS_CJRQ)
+    {
+      xrdp_mcs_send_cjcf(self, self->userid + MCS_USERCHANNEL_BASE);
+      continue;
+    }
+    break;
+  }
   if (appid != MCS_SDRQ)
+  {
+    DEBUG(("  out xrdp_mcs_recv err got 0x%x need MCS_SDRQ\n\r", appid));
     return 1;
+  }
   in_uint8s(self->in_s, 5);
   in_uint8(self->in_s, len);
   if (len & 0x80)
     in_uint8s(self->in_s, 1);
+  DEBUG(("  out xrdp_mcs_recv\n\r"));
   return 0;
 }
 
@@ -72,6 +105,7 @@ int xrdp_mcs_ber_parse_header(struct xrdp_mcs* self, int tag_val, int* len)
 {
   int tag;
   int l;
+  int i;
 
   if (tag_val > 0xff)
   {
@@ -90,7 +124,8 @@ int xrdp_mcs_ber_parse_header(struct xrdp_mcs* self, int tag_val, int* len)
     *len = 0;
     while (l > 0)
     {
-      next_be(self->in_s, *len);
+      in_uint8(self->in_s, i);
+      *len = (*len << 8) | i;
       l--;
     }
   }
@@ -203,7 +238,7 @@ int xrdp_mcs_send_aucf(struct xrdp_mcs* self)
 {
   if (xrdp_iso_init(self->iso_layer, 4) != 0)
     return 1;
-  out_uint8(self->out_s, (MCS_AUCF << 2) | 2);
+  out_uint8(self->out_s, ((MCS_AUCF << 2) | 2));
   out_uint8s(self->out_s, 1);
   out_uint16_be(self->out_s, self->userid);
   s_mark_end(self->out_s);
@@ -233,23 +268,6 @@ int xrdp_mcs_recv_cjrq(struct xrdp_mcs* self)
   return 0;
 }
 
-/*****************************************************************************/
-/* returns error */
-int xrdp_mcs_send_cjcf(struct xrdp_mcs* self, int chanid)
-{
-  if (xrdp_iso_init(self->iso_layer, 8) != 0)
-    return 1;
-  out_uint8(self->out_s, (MCS_CJCF << 2) | 2);
-  out_uint8(self->out_s, 0);
-  out_uint16_be(self->out_s, self->userid);
-  out_uint16_be(self->out_s, chanid);
-  out_uint16_be(self->out_s, chanid);
-  s_mark_end(self->out_s);
-  if (xrdp_iso_send(self->iso_layer) != 0)
-    return 1;
-  return 0;
-}
-
 /*****************************************************************************/
 /* returns error */
 int xrdp_mcs_ber_out_header(struct xrdp_mcs* self, int tag_val, int len)
@@ -349,6 +367,7 @@ int xrdp_mcs_send_connect_response(struct xrdp_mcs* self)
 /* returns error */
 int xrdp_mcs_incoming(struct xrdp_mcs* self)
 {
+  DEBUG(("  in xrdp_mcs_incoming\n\r"));
   if (xrdp_iso_incoming(self->iso_layer) != 0)
     return 1;
   if (xrdp_mcs_recv_connect_initial(self) != 0)
@@ -369,6 +388,7 @@ int xrdp_mcs_incoming(struct xrdp_mcs* self)
     return 1;
   if (xrdp_mcs_send_cjcf(self, MCS_GLOBAL_CHANNEL) != 0)
     return 1;
+  DEBUG(("  out xrdp_mcs_incoming\n\r"));
   return 0;
 }
 
diff --git a/xrdp/xrdp_tcp.c b/xrdp/xrdp_tcp.c
index 5463b591..1a9961c3 100644
--- a/xrdp/xrdp_tcp.c
+++ b/xrdp/xrdp_tcp.c
@@ -27,9 +27,11 @@ struct xrdp_tcp* xrdp_tcp_create(struct xrdp_iso* owner)
   struct xrdp_tcp* self;
 
   self = (struct xrdp_tcp*)g_malloc(sizeof(struct xrdp_tcp), 1);
-  self->owner = owner;
+  self->iso_layer = owner;
   self->in_s = owner->in_s;
   self->out_s = owner->out_s;
+  /* get sck from xrdp_process */
+  self->sck = owner->mcs_layer->sec_layer->rdp_layer->pro_layer->sck;
   return self;
 }
 
@@ -54,6 +56,7 @@ int xrdp_tcp_recv(struct xrdp_tcp* self, int len)
 {
   int rcvd;
 
+  DEBUG(("    in xrdp_tcp_recv, gota get %d bytes\n", len))
   init_stream(self->in_s, len);
   while (len > 0)
   {
@@ -65,10 +68,16 @@ int xrdp_tcp_recv(struct xrdp_tcp* self, int len)
       if (g_tcp_last_error_would_block(self->sck))
         g_sleep(1);
       else
+      {
+        DEBUG(("    error = -1 in xrdp_tcp_recv socket %d\n", self->sck))
         return 1;
+      }
     }
     else if (rcvd == 0)
+    {
+      DEBUG(("    error = 0 in xrdp_tcp_recv socket %d\n", self->sck))
       return 1;
+    }
     else
     {
       self->in_s->end += rcvd;
@@ -87,6 +96,7 @@ int xrdp_tcp_send(struct xrdp_tcp* self)
   int sent;
 
   len = self->out_s->end - self->out_s->data;
+  DEBUG(("    in xrdp_tcp_send, gota send %d bytes\n", len))
   total = 0;
   while (total < len)
   {
@@ -98,10 +108,16 @@ int xrdp_tcp_send(struct xrdp_tcp* self)
       if (g_tcp_last_error_would_block(self->sck))
         g_sleep(1);
       else
+      {
+        DEBUG(("    error = -1 in xrdp_tcp_send socket %d\n", self->sck))
         return 1;
+      }
     }
     else if (sent == 0)
+    {
+      DEBUG(("    error = 0 in xrdp_tcp_send socket %d\n", self->sck))
       return 1;
+    }
     else
       total = total + sent;
   }