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@@ -100,33 +100,32 @@ The task of the sniffer programmer to decode the raw stream into human readable
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#### Instructions:
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-1. To load this project you need to run QtCreator with administrator (root) privileges.
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-`sudo qtcreator Documents/eip/classes-simplesniffer/SimpleSniffer.pro`
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-2. Load the project `SimpleSniffer` into `QtCreator`. There are two ways to do this:
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+1. Load the project `SimpleSniffer` into `QtCreator`. There are two ways to do this:
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- * Using the virtual machine: Double click the file `SimpleSniffer.pro` located in the folder `/home/eip/labs/classes-simplesniffer` of your virtual machine.
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- * Downloading the project’s folder from `Bitbucket`: Use a terminal and write the command `git clone http:/bitbucket.org/eip-uprrp/classes-simplesniffer` to download the folder `classes-simplesniffer` from `Bitbucket`. Double click the file `SimpleSniffer.pro` located in the folder that you downloaded to your computer.
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+ * Using the virtual machine, you need to run QtCreator with administrator (root) privileges.:
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+`sudo qtcreator /home/eip/labs/classes-simplesniffer/SimpleSniffer.pro`
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+ * Downloading the project’s folder from `Bitbucket`: Use a terminal and write the command `git clone http:/bitbucket.org/eip-uprrp/classes-simplesniffer` to download the folder `classes-simplesniffer` from `Bitbucket`. In this directory, you need to run QtCreator with administrator (root) privileges:
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+`sudo qtcreator ./SimpleSniffer.pro`
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-3. Configure the project. In this laboratory experience you will be working with the files `ethernet_hdr.h`, `ethernet_packet.h`, `ethernet_packet.cpp`, `ip_packet.h` and `ip_packet.cpp`.
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+2. Configure the project. In this laboratory experience you will be working with the files `ethernet_hdr.h`, `ethernet_packet.h`, `ethernet_packet.cpp`, `ip_packet.h` and `ip_packet.cpp`.
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### Exercise 2 - Complete the class ethernet_packet
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1. Study the file `ethernet_hdr.h`. This file contains the definition of the data structure that represents an Ethernet header.:
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- #define ETHER_ADDR_LEN 6
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- struct sniff_ethernet {
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+ #define ETHER_ADDR_LEN 6
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+ struct sniff_ethernet {
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u_char ether_dhost[ETHER_ADDR_LEN]; /* destination host address */
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u_char ether_shost[ETHER_ADDR_LEN]; /* source host address */
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u_short ether_type; /* IP? ARP? RARP? etc */
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- };
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+ };
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- The Ethernet header above is used to decode the ethernet part of the raw data in each packet. It is composed of the source MAC address (ether_shost, 6 bytes), the destiantion MAC address (ether_dhost, 6 bytes), and the type of Ethernet packet (ether_type, 2 bytes), which is used to determine if the packet is an IP packet.
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+ The Ethernet header above is used to decode the ethernet part of the raw data in each packet. It is composed of the source MAC address (ether_shost, 6 bytes), the destiantion MAC address (ether_dhost, 6 bytes), and the type of Ethernet packet (ether_type, 2 bytes), which is used to determine if the packet is an IP packet.
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- As you know, it is not a good idea to show this information format to a regular user. Your first task is to define the functions of the C++ class that defines the functions that translate the MAC address information into human readable strings.
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+ As you know, it is not a good idea to show this information format to a regular user. Your first task is to define the functions of the C++ class that defines the functions that translate the MAC address information into human readable strings.
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2. The following code is the definition of the class `ethernet_packet`, that can be found in file `ethernet_packet.h`:
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