From 7878f91cdda79b4860ed6564fbe5086740abb7c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9gory=20Soutad=C3=A9?= <soutade@gmail.com>
Date: Mon, 21 Nov 2022 17:56:29 +0100
Subject: [PATCH] Add support for MacOS and old compilers (not supporting
 C++11). Main patch is from Samuel Marks.

---
 README.md                  |  1 -
 include/Base64.h           | 12 +++++++--
 include/libgourou_common.h | 14 ++++++++--
 src/device.cpp             | 53 +++++++++++++++++++++++++++++++++++---
 src/fulfillment_item.cpp   |  5 ++++
 5 files changed, 77 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 0cffdd7..d09f731 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,6 @@ _externals_ :
 _internals_ :
 
   * PugiXML
-  * Base64
   * uPDFParser
 
 For utils :
diff --git a/include/Base64.h b/include/Base64.h
index cdfdc04..e5b4930 100644
--- a/include/Base64.h
+++ b/include/Base64.h
@@ -33,7 +33,11 @@ class Base64 {
  public:
 
   static std::string Encode(const std::string data) {
-    static constexpr char sEncodingTable[] = {
+    static
+#if __STDC_VERSION__ >= 201112L
+    constexpr
+#endif /* __STDC_VERSION__ >= 201112L */
+    char sEncodingTable[] = {
       'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
       'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
       'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
@@ -73,7 +77,11 @@ class Base64 {
   }
 
   static std::string Decode(const std::string& input, std::string& out) {
-    static constexpr unsigned char kDecodingTable[] = {
+    static
+#if __STDC_VERSION__ >= 201112L
+    constexpr
+#endif /* __STDC_VERSION__ >= 201112L */
+    unsigned char kDecodingTable[] = {
       64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
       64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
       64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
diff --git a/include/libgourou_common.h b/include/libgourou_common.h
index 826a1a3..22bbd2d 100644
--- a/include/libgourou_common.h
+++ b/include/libgourou_common.h
@@ -131,7 +131,17 @@ namespace gourou
 	DRM_INVALID_KEY_SIZE,
 	DRM_ERR_ENCRYPTION_KEY_FP
     };
-
+    
+    #ifndef _NOEXCEPT
+    #if __STDC_VERSION__ >= 201112L
+    #  define _NOEXCEPT noexcept
+    #  define _NOEXCEPT_(x) noexcept(x)
+    #else
+    #  define _NOEXCEPT throw()
+    #  define _NOEXCEPT_(x)
+    #endif
+    #endif /* !_NOEXCEPT */
+    
     /**
      * Generic exception class
      */
@@ -157,7 +167,7 @@ namespace gourou
 	    this->fullmessage = strdup(other.fullmessage);
 	}
 
-	~Exception()
+	~Exception() _NOEXCEPT
 	{
 	    free(fullmessage);
 	}
diff --git a/src/device.cpp b/src/device.cpp
index 481a99b..1418d47 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -29,13 +29,23 @@
 #include <libgourou_log.h>
 #include <device.h>
 
-// From https://stackoverflow.com/questions/1779715/how-to-get-mac-address-of-your-machine-using-a-c-program/35242525
+#include <string.h>
+#if defined(__linux__) || defined(linux) || defined(__linux)
 #include <sys/ioctl.h>
-#include <net/if.h> 
+#include <net/if.h>
 #include <unistd.h>
 #include <netinet/in.h>
-#include <string.h>
+#elif (defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
+      || defined(__bsdi__) || defined(__DragonFly__) || defined(__APPLE__))
+#include <ifaddrs.h>
+#include <sys/socket.h>
+#include <net/if_dl.h>
 
+#define BSD_HEADERS 1
+#endif
+
+#if defined(__linux__) || defined(linux) || defined(__linux)
+// From https://stackoverflow.com/questions/1779715/how-to-get-mac-address-of-your-machine-using-a-c-program/35242525
 int get_mac_address(unsigned char* mac_address)
 {
     struct ifreq ifr;
@@ -74,6 +84,43 @@ int get_mac_address(unsigned char* mac_address)
 
     return 1;
 }
+#elif BSD_HEADERS
+// https://stackoverflow.com/a/3978293
+int get_mac_address(unsigned char* mac_address, const char* if_name = "en0")
+{
+    ifaddrs* iflist;
+    int found = 0;
+    if (getifaddrs(&iflist) == 0) {
+        for (ifaddrs* cur = iflist; cur; cur = cur->ifa_next) {
+            if ((cur->ifa_addr->sa_family == AF_LINK) &&
+                (strcmp(cur->ifa_name, if_name) == 0) &&
+                cur->ifa_addr) {
+                sockaddr_dl* sdl = (sockaddr_dl*)cur->ifa_addr;
+                memcpy(mac_address, LLADDR(sdl), sdl->sdl_alen);
+                found = 1;
+                break;
+            }
+        }
+
+        freeifaddrs(iflist);
+    }
+    return found;
+}
+#else
+int get_mac_address(unsigned char* mac_address)
+{
+    GOUROU_LOG(INFO, "get_mac_address() not implemented for your platform, using a static address");
+    
+    mac_address[0] = 0x8D;
+    mac_address[1] = 0x70;
+    mac_address[2] = 0x13;
+    mac_address[3] = 0x8D;
+    mac_address[4] = 0x43;
+    mac_address[5] = 0x27;
+
+    return 1;
+}
+#endif /* defined(__linux__) || defined(linux) || defined(__linux) */
 
 
 namespace gourou
diff --git a/src/fulfillment_item.cpp b/src/fulfillment_item.cpp
index 924c63f..dbd8d31 100644
--- a/src/fulfillment_item.cpp
+++ b/src/fulfillment_item.cpp
@@ -17,6 +17,7 @@
   along with libgourou. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <cctype>
 #include <fulfillment_item.h>
 #include <libgourou_common.h>
 #include "user.h"
@@ -93,8 +94,12 @@ namespace gourou
     std::string FulfillmentItem::getMetadata(std::string name)
     {
 	// https://stackoverflow.com/questions/313970/how-to-convert-an-instance-of-stdstring-to-lower-case
+	#if __STDC_VERSION__ >= 201112L
 	std::transform(name.begin(), name.end(), name.begin(),
 		       [](unsigned char c){ return std::tolower(c); });
+	#else
+	std::transform(name.begin(), name.end(), name.begin(), tolower);
+	#endif
 	name = std::string("dc:") + name;
 	pugi::xpath_node path = metadatas.select_node(name.c_str());