From b52880892d1a85203e58cdb049877e7ae4c16663 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 13 Jan 2010 19:35:38 -0800
Subject: Added strict compiler flags. Made changes to meet compilation. Added
 test to verify ip and mac addr code.

---
 lib/device_addr.cpp | 55 +++++++++++++++++++++++++++++++++--------------------
 1 file changed, 34 insertions(+), 21 deletions(-)

(limited to 'lib/device_addr.cpp')

diff --git a/lib/device_addr.cpp b/lib/device_addr.cpp
index ac66c0d25..34c61ede8 100644
--- a/lib/device_addr.cpp
+++ b/lib/device_addr.cpp
@@ -5,36 +5,49 @@
 #include <usrp_uhd/device_addr.hpp>
 #include <sstream>
 #include <cstring>
-#include <cstdio>
 #include <stdexcept>
+#include <boost/format.hpp>
+#include <boost/algorithm/string.hpp>
 
 //----------------------- u2 mac addr wrapper ------------------------//
-usrp_uhd::mac_addr_t::mac_addr_t(const std::string &str){
+usrp_uhd::mac_addr_t::mac_addr_t(const std::string &mac_addr_str){
     //ether_aton_r(str.c_str(), &mac_addr);
-    bool good = false;
-    char p[6] = {0x00, 0x50, 0xC2, 0x85, 0x30, 0x00}; // Matt's IAB
+    uint8_t p[6] = {0x00, 0x50, 0xC2, 0x85, 0x30, 0x00}; // Matt's IAB
 
-    switch (str.size()){
-    case 5:
-      good = sscanf(str.c_str(), "%hhx:%hhx", &p[4], &p[5]) == 2;
-      break;
-    case 17:
-      good = sscanf(str.c_str(), "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
-            &p[0], &p[1], &p[2], &p[3], &p[4], &p[5]) == 6;
-      break;
+    try{
+        //only allow patterns of xx:xx or xx:xx:xx:xx:xx:xx
+        //the IAB above will fill in for the shorter pattern
+        if (mac_addr_str.size() != 5 and mac_addr_str.size() != 17)
+            throw std::runtime_error("expected exactly 5 or 17 characters");
+
+        //split the mac addr hex string at the colons
+        std::vector<std::string> hex_strs;
+        boost::split(hex_strs, mac_addr_str, boost::is_any_of(":"));
+        for (size_t i = 0; i < hex_strs.size(); i++){
+            int hex_num;
+            std::istringstream iss(hex_strs[i]);
+            iss >> std::hex >> hex_num;
+            p[i] = uint8_t(hex_num);
+        }
+
+    }
+    catch(std::exception const& e){
+        throw std::runtime_error(str(
+            boost::format("Invalid mac address: %s\n\t%s") % mac_addr_str % e.what()
+        ));
     }
 
-    if (not good) throw std::runtime_error("Invalid mac address: " + str);
     memcpy(&mac_addr, p, sizeof(mac_addr));
 }
 
 std::string usrp_uhd::mac_addr_t::to_string(void) const{
-    char addr_buf[128];
     //ether_ntoa_r(&mac_addr, addr_buf);
     const uint8_t *p = reinterpret_cast<const uint8_t *>(&mac_addr);
-    sprintf(addr_buf, "%02x:%02x:%02x:%02x:%02x:%02x",
-        p[0], p[1], p[2], p[3], p[4], p[5]);
-    return std::string(addr_buf);
+    return str(
+        boost::format("%02x:%02x:%02x:%02x:%02x:%02x")
+        % int(p[0]) % int(p[1]) % int(p[2])
+        % int(p[3]) % int(p[4]) % int(p[5])
+    );
 }
 
 std::ostream& operator<<(std::ostream &os, const usrp_uhd::mac_addr_t &x){
@@ -43,9 +56,9 @@ std::ostream& operator<<(std::ostream &os, const usrp_uhd::mac_addr_t &x){
 }
 
 //----------------------- u2 ipv4 wrapper ----------------------------//
-usrp_uhd::ip_addr_t::ip_addr_t(const std::string &str){
-    int ret = inet_pton(AF_INET, str.c_str(), &ip_addr);
-    if (ret == 0) throw std::runtime_error("Invalid ip address: " + str);
+usrp_uhd::ip_addr_t::ip_addr_t(const std::string &ip_addr_str){
+    int ret = inet_pton(AF_INET, ip_addr_str.c_str(), &ip_addr);
+    if (ret == 0) throw std::runtime_error("Invalid ip address: " + ip_addr_str);
 }
 
 std::string usrp_uhd::ip_addr_t::to_string(void) const{
@@ -73,7 +86,7 @@ usrp_uhd::device_addr_t::device_addr_t(device_addr_type_t device_addr_type){
 }
 
 std::string usrp_uhd::device_addr_t::to_string(void) const{
-    std::stringstream out;
+    std::ostringstream out;
     out << "USRP Type: ";
     switch(type){
     case DEVICE_ADDR_TYPE_AUTO:
-- 
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