Implemented system info collection block

3 files changed, 235 insertions, 0 deletions

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 660bbfd..6e00442 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -50,6 +50,7 @@ list(APPEND grgsm_sources
     flow_control/burst_fnr_filter_impl.cc
     flow_control/dummy_burst_filter_impl.cc
     flow_control/uplink_downlink_splitter_impl.cc
+    misc_utils/collect_system_info_impl.cc
     misc_utils/controlled_rotator_cc_impl.cc
     misc_utils/controlled_fractional_resampler_cc_impl.cc
     misc_utils/msg_to_tag_impl.cc
diff --git a/lib/misc_utils/collect_system_info_impl.cc b/lib/misc_utils/collect_system_info_impl.cc
new file mode 100755
index 0000000..74ea170
--- /dev/null
+++ b/lib/misc_utils/collect_system_info_impl.cc
@@ -0,0 +1,185 @@
+/* -*- c++ -*- */
+/*
+ * @file
+ * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @section LICENSE
+ *
+ * Gr-gsm is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * Gr-gsm is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnuradio/io_signature.h>
+#include <grgsm/gsmtap.h>
+#include <unistd.h>
+#include <grgsm/endian.h>
+
+#include "collect_system_info_impl.h"
+
+namespace gr {
+  namespace gsm {
+    
+    void collect_system_info_impl::process_messages(pmt::pmt_t msg){
+        pmt::pmt_t message_plus_header_blob = pmt::cdr(msg);
+        uint8_t * message_plus_header = (uint8_t *)pmt::blob_data(message_plus_header_blob);
+        gsmtap_hdr * header = (gsmtap_hdr *)message_plus_header;
+        uint8_t * msg_elements = (uint8_t *)(message_plus_header+sizeof(gsmtap_hdr));
+        
+        uint8_t chan_type = header->sub_type;
+                
+        if (chan_type == GSMTAP_CHANNEL_BCCH && msg_elements[1] == 0x06) 
+        {
+            int frame_nr = be32toh(header->frame_number);
+                        
+            if (msg_elements[2]  == 0x19)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 1");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x1a)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 2");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x1b)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 3");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x1c)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 4");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x02)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 2bis");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x03)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 2ter");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x07)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 2quater");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[2]  == 0x00)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 13");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+        }
+        else if ((chan_type == GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH
+            || chan_type == GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH4
+            || chan_type == GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_SDCCH8
+            || chan_type == GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_TCH_F
+            || chan_type == GSMTAP_CHANNEL_ACCH|GSMTAP_CHANNEL_TCH_H)
+            && msg_elements[5] == 0x06)
+        {
+            int frame_nr = be32toh(header->frame_number);
+                        
+            if (msg_elements[6]  == 0x1D)
+            {   
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 5");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[6]  == 0x1E)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 6");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[6]  == 0x05)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 5bis");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+            else if (msg_elements[6]  == 0x06)
+            {
+                d_framenumbers.push_back(frame_nr);
+                d_sit_types.push_back("System Information Type 5ter");
+                d_sit_data.push_back(get_hex_string(msg_elements));
+            }
+        }
+    }
+    
+    std::vector<int> collect_system_info_impl::get_framenumbers()
+    {
+        return d_framenumbers;
+    }
+    
+    std::vector<std::string> collect_system_info_impl::get_system_information_type()
+    {
+        return d_sit_types;
+    }
+    
+    std::vector<std::string> collect_system_info_impl::get_data()
+    {
+        return d_sit_data;
+    }
+    
+    std::string collect_system_info_impl::get_hex_string(uint8_t * msg_elements)
+    {
+        std::stringstream sstream;
+        for (int i=0; i<23; i++)
+        {
+            sstream << std::setfill ('0') << std::setw(2) << std::hex << static_cast<int>(msg_elements[i]);
+        }
+        return sstream.str();
+    }
+    
+    collect_system_info::sptr
+    collect_system_info::make()
+    {
+      return gnuradio::get_initial_sptr
+        (new collect_system_info_impl());
+    }
+
+    /*
+     * The private constructor
+     */
+    collect_system_info_impl::collect_system_info_impl()
+      : gr::block("collect_system_info",
+              gr::io_signature::make(0, 0, 0),
+              gr::io_signature::make(0, 0, 0))
+    {
+        message_port_register_in(pmt::mp("msgs"));
+        set_msg_handler(pmt::mp("msgs"), boost::bind(&collect_system_info_impl::process_messages, this, _1));
+    }
+    
+    /*
+     * Our virtual destructor.
+     */
+    collect_system_info_impl::~collect_system_info_impl()
+    {
+    }
+  } /* namespace gsm */
+} /* namespace gr */
diff --git a/lib/misc_utils/collect_system_info_impl.h b/lib/misc_utils/collect_system_info_impl.h
new file mode 100755
index 0000000..df017f6
--- /dev/null
+++ b/lib/misc_utils/collect_system_info_impl.h
@@ -0,0 +1,49 @@
+/* -*- c++ -*- */
+/*
+ * @file
+ * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @section LICENSE
+ *
+ * Gr-gsm is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * Gr-gsm is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_GSM_COLLECT_SYSTEM_INFO_IMPL_H
+#define INCLUDED_GSM_COLLECT_SYSTEM_INFO_IMPL_H
+
+#include <grgsm/misc_utils/collect_system_info.h>
+#include <vector>
+
+namespace gr {
+  namespace gsm {
+    class collect_system_info_impl : public collect_system_info
+    {
+     private:
+      void process_messages(pmt::pmt_t msg);
+      std::vector<int> d_framenumbers;
+      std::vector<std::string> d_sit_types;
+      std::vector<std::string> d_sit_data;
+      std::string get_hex_string(uint8_t * msg_elements);
+     public:
+      virtual std::vector<int> get_framenumbers();
+      virtual std::vector<std::string> get_system_information_type();
+      virtual std::vector<std::string> get_data();
+      collect_system_info_impl();
+      ~collect_system_info_impl();
+    };
+  } // namespace gsm
+} // namespace gr
+
+#endif /* INCLUDED_GSM_COLLECT_SYSTEM_INFO_IMPL_H */