From 77a15cf8943d5588e17815771420d189f3f8bca8 Mon Sep 17 00:00:00 2001
From: Leandro Lucarella <llucax@gmail.com>
Date: Sun, 28 May 2006 20:33:36 +0000
Subject: [PATCH] IPAddr.

---
 practicas/pipi/src/Makefile        |  6 +++-
 practicas/pipi/src/ipaddr.cpp      | 55 ++++++++++++++++++++++++++++++
 practicas/pipi/src/ipaddr.h        | 39 +++++++++++++++++++++
 practicas/pipi/src/test_ipaddr.cpp | 14 ++++++++
 4 files changed, 113 insertions(+), 1 deletion(-)
 create mode 100644 practicas/pipi/src/ipaddr.cpp
 create mode 100644 practicas/pipi/src/ipaddr.h
 create mode 100644 practicas/pipi/src/test_ipaddr.cpp

diff --git a/practicas/pipi/src/Makefile b/practicas/pipi/src/Makefile
index 3c5f4e0..d0290d4 100644
--- a/practicas/pipi/src/Makefile
+++ b/practicas/pipi/src/Makefile
@@ -27,7 +27,7 @@ CXXFLAGS = $(CFLAGS) -fno-inline
 CC=g++
 
 # Programas
-targets=test_send test_recv
+targets=test_send test_recv test_ipaddr
 
 # Fuentes
 fuentes ?= $(wildcard *.cpp)
@@ -44,6 +44,8 @@ test_send: test_send.o media.o
 
 test_recv: test_recv.o media.o
 
+test_ipaddr: test_ipaddr.o ipaddr.o
+
 depend:
 	@makedepend $(fuentes) > /dev/null 2>&1
 
@@ -52,6 +54,7 @@ clean:
 
 # DO NOT DELETE
 
+ipaddr.o: ipaddr.h
 media.o: media.h frame.h /usr/include/unistd.h /usr/include/features.h
 media.o: /usr/include/sys/cdefs.h /usr/include/gnu/stubs.h
 media.o: /usr/include/bits/posix_opt.h /usr/include/bits/types.h
@@ -66,6 +69,7 @@ media.o: /usr/include/bits/pthreadtypes.h /usr/include/bits/sched.h
 media.o: /usr/include/sys/ipc.h /usr/include/bits/ipctypes.h
 media.o: /usr/include/bits/ipc.h /usr/include/sys/msg.h
 media.o: /usr/include/bits/msq.h
+test_ipaddr.o: ipaddr.h
 test_recv.o: ethernetframe.h frame.h media.h /usr/include/unistd.h
 test_recv.o: /usr/include/features.h /usr/include/sys/cdefs.h
 test_recv.o: /usr/include/gnu/stubs.h /usr/include/bits/posix_opt.h
diff --git a/practicas/pipi/src/ipaddr.cpp b/practicas/pipi/src/ipaddr.cpp
new file mode 100644
index 0000000..5f33669
--- /dev/null
+++ b/practicas/pipi/src/ipaddr.cpp
@@ -0,0 +1,55 @@
+
+#include "ipaddr.h"
+#include <sstream>
+
+/// Constructor
+IPAddr::IPAddr(atom a1, atom a2, atom a3, atom a4)
+{
+    atoms[0] = a1;
+    atoms[1] = a2;
+    atoms[2] = a3;
+    atoms[3] = a4;
+}
+
+/// Constructor
+IPAddr::IPAddr(unsigned ip)
+{
+    atoms[0] = ip >> 24;
+    atoms[1] = ip >> 16;
+    atoms[2] = ip >> 8;
+    atoms[3] = ip;
+}
+
+/// Constructor
+IPAddr::IPAddr(std::string ip) throw (std::logic_error)
+{
+    std::istringstream iss(ip);
+    for (int i = 0; i < 4; ++i)
+    {
+        if (!std::getline(iss, ip, '.'))
+            throw std::logic_error("Dirección IP inválida");
+        atoms[i] = std::atoi(ip.c_str());
+    }
+}
+
+/// Operador de casteo a unsigned
+IPAddr::operator unsigned () const
+{
+    return (atoms[0] << 24) + (atoms[1] << 16) + (atoms[2] << 8) + atoms[3];
+}
+
+/// Operador de casteo a std::string
+IPAddr::operator std::string () const
+{
+    std::ostringstream oss;
+    oss << unsigned(atoms[0]) << "." << unsigned(atoms[1]) << "."
+        << unsigned(atoms[2]) << "." << unsigned(atoms[3]);
+    return oss.str();
+}
+
+std::ostream& operator<< (std::ostream& os, const IPAddr& ip)
+{
+    return os << std::string(ip);
+}
+
+// vim: set et sw=4 sts=4 :
diff --git a/practicas/pipi/src/ipaddr.h b/practicas/pipi/src/ipaddr.h
new file mode 100644
index 0000000..eed830d
--- /dev/null
+++ b/practicas/pipi/src/ipaddr.h
@@ -0,0 +1,39 @@
+#ifndef _IPADDR_H_
+#define _IPADDR_H_
+
+#include <string>
+#include <cstdlib>
+#include <stdexcept>
+
+/// Dirección IP
+struct IPAddr
+{
+
+    /// Átomo de dirección IP
+    typedef unsigned char atom;
+
+    /// Representación interna
+    atom atoms[4];
+
+    /// Constructor
+    IPAddr(atom a1, atom a2, atom a3, atom a4);
+
+    /// Constructor
+    IPAddr(unsigned ip);
+
+    /// Constructor
+    IPAddr(std::string ip) throw (std::logic_error);
+
+    /// Operador de casteo a unsigned
+    operator unsigned () const;
+
+    /// Operador de casteo a std::string
+    operator std::string () const;
+
+};
+
+std::ostream& operator<< (std::ostream& os, const IPAddr& ip);
+
+#endif // _IPADDR_H_
+
+// vim: set et sw=4 sts=4 :
diff --git a/practicas/pipi/src/test_ipaddr.cpp b/practicas/pipi/src/test_ipaddr.cpp
new file mode 100644
index 0000000..b3a84d9
--- /dev/null
+++ b/practicas/pipi/src/test_ipaddr.cpp
@@ -0,0 +1,14 @@
+#include "ipaddr.h"
+#include <iostream>
+
+int main()
+{
+    IPAddr ip1(0x0a0a0a05);
+    IPAddr ip2("10.10.10.1");
+    IPAddr ip3(10, 10, 10, 2);
+    std::cout << "IP1 = " << ip1 << "\n";
+    std::cout << "IP2 = " << ip2 << "\n";
+    std::cout << "IP3 = " << ip3 << "\n";
+}
+
+// vim: set et sw=4 sts=4 :
-- 
2.43.0