Add support to option "dhcp-option" in ovpn file

Sources/OpenVPN3/client/ovpncli.cpp

@@ -663,6 +663,14 @@ namespace openvpn {
 	    se.friendlyName = i->friendlyName;
 	    eval.serverList.push_back(se);
 	  }
+    // Added by Dener Araújo - 2020-09-06
+    for (ParseClientConfig::DhcpOptionList::const_iterator i = cc.dhcpOptionList().begin(); i != cc.dhcpOptionList().end(); ++i)
+      {
+        DhcpOptionEntry de;
+        de.type = i->type;
+        de.address = i->address;
+        eval.dhcpOptionList.push_back(de);
+      }
       }
       catch (const std::exception& e)
 	{

Sources/OpenVPN3/client/ovpncli.hpp

@@ -47,6 +47,15 @@ namespace openvpn {
       std::string friendlyName;
     };
 
+    // Added by Dener Araújo - 2020-09-06
+    // Represents an "dhcp-option" with its type (DNS, WINS, etc) and its address
+    // (client reads)
+    struct DhcpOptionEntry
+    {
+      std::string type;
+      std::string address;
+    };
+
     // return properties of config
     // (client reads)
     struct EvalConfig
@@ -91,6 +100,10 @@ namespace openvpn {
 
       // optional list of user-selectable VPN servers
       std::vector<ServerEntry> serverList;
+
+      // Added by Dener Araújo - 2020-09-06
+      // optional list of "dhcp-option"
+      std::vector<DhcpOptionEntry> dhcpOptionList;
     };
 
     // used to pass credentials to VPN core

Sources/OpenVPN3/openvpn/client/cliopthelper.hpp

@@ -59,6 +59,17 @@ namespace openvpn {
     {
     };
 
+    // Added by Dener Araújo - 2020-09-06
+    struct DhcpOptionEntry {
+      std::string type;
+      std::string address;
+    };
+
+    // Added by Dener Araújo - 2020-09-06
+    struct DhcpOptionList : public std::vector<DhcpOptionEntry>
+    {
+    };
+
     struct RemoteItem {
       std::string host;
       std::string port;
@@ -283,6 +294,30 @@ namespace openvpn {
 	  }
 	}
 
+    // Added by Dener Araújo - 2020-09-06
+    // dhpc-option
+    {
+      const OptionList::IndexList *dhcpList = options.get_index_ptr("dhcp-option");
+
+      if (dhcpList)
+      {
+        for (OptionList::IndexList::const_iterator i = dhcpList->begin(); i != dhcpList->end(); ++i)
+        {
+          const Option& o = options[*i];
+          o.touch();
+
+          const std::string arg1 = o.get_optional(1, 256);
+          const std::string arg2 = o.get_optional(2, 256);
+
+          DhcpOptionEntry dhcp;
+          dhcp.type = arg1;
+          dhcp.address = arg2;
+
+          dhcpOptionList_.push_back(std::move(dhcp));
+        }
+      }
+    }
+
 	// protocol configuration
 	{
 	  protoConfig.reset(new ProtoContext::Config());
@@ -435,6 +470,10 @@ namespace openvpn {
 
     // return first remote directive in config
     const RemoteItem& firstRemoteListItem() const { return firstRemoteListItem_; }
+      
+    // Added by Dener Araújo - 2020-09-06
+    // dhpc-option
+    const DhcpOptionList& dhcpOptionList() const { return dhcpOptionList_; }
 
     std::string to_string() const
     {
@@ -524,6 +563,18 @@ namespace openvpn {
 
       root["mode"] = Json::Value("client");
       root["dev"] = Json::Value(dev);
+      // Added by Dener Araújo - 2020-09-06
+      root["dhcp-options"] = Json::Value(Json::arrayValue);
+      for (size_t i = 0; i < dhcpOptionList_.size(); i++)
+      {
+    const DhcpOptionEntry& item = dhcpOptionList_[i];
+
+    Json::Value el = Json::Value(Json::objectValue);
+    el["type"] = Json::Value(item.type);
+    el["address"] = Json::Value(item.address);
+
+    root["dhcp-options"].append(el);
+      }
       root["dev-type"] = Json::Value(protoConfig->layer.dev_type());
       root["remotes"] = Json::Value(Json::arrayValue);
       for (size_t i = 0; i < remoteList->size(); i++)
@@ -716,6 +767,7 @@ namespace openvpn {
     ProtoContext::Config::Ptr protoConfig;
     SSLLib::SSLAPI::Config::Ptr sslConfig;
     std::string dev;
+    DhcpOptionList dhcpOptionList_; // Added by Dener Araújo - 2020-09-06
   };
 }
 

Sources/OpenVPNAdapter/library/OpenVPNConfigurationEvaluation.h

@@ -10,6 +10,7 @@
 
 typedef NS_ENUM(NSInteger, OpenVPNTransportProtocol);
 @class OpenVPNServerEntry;
+@class OpenVPNDhcpOptionEntry; //Added by Dener Araújo - 2020-09-06
 
 @interface OpenVPNConfigurationEvaluation : NSObject
 
@@ -78,6 +79,12 @@ typedef NS_ENUM(NSInteger, OpenVPNTransportProtocol);
  */
 @property (nullable, readonly, nonatomic) NSArray<OpenVPNServerEntry *> *servers;
 
+/**
+ Added by Dener Araújo - 2020-09-06
+ Optional list of "dhcp-option"
+*/
+@property (nullable, readonly, nonatomic) NSArray<OpenVPNDhcpOptionEntry *> *dhcpOptions;
+
 - (nonnull instancetype) init NS_UNAVAILABLE;
 
 @end

Sources/OpenVPNAdapter/library/OpenVPNConfigurationEvaluation.mm

@@ -13,6 +13,7 @@
 
 #import "OpenVPNConfiguration+Internal.h"
 #import "OpenVPNServerEntry+Internal.h"
+#import "OpenVPNDhcpOptionEntry+Internal.h" //Added by Dener Araújo - 2020-09-06
 
 using namespace openvpn;
 
@@ -56,6 +57,20 @@ using namespace openvpn;
             
             _servers = servers;
         }
+
+        //Added by Dener Araújo - 2020-09-06
+        _dhcpOptions = nil;
+        
+        if (!eval.dhcpOptionList.empty()) {
+            NSMutableArray *dhcpOptions = [NSMutableArray new];
+            
+            for (ClientAPI::DhcpOptionEntry entry : eval.dhcpOptionList) {
+                OpenVPNDhcpOptionEntry *dhcpOptionEntry = [[OpenVPNDhcpOptionEntry alloc] initWithDhcpOptionEntry:entry];
+                [dhcpOptions addObject:dhcpOptionEntry];
+            }
+            
+            _dhcpOptions = dhcpOptions;
+        }
     }
     return self;
 }

Sources/OpenVPNAdapter/library/OpenVPNDhcpOptionEntry+Internal.h

@@ -0,0 +1,18 @@
+//
+//  OpenVPNDhcpOptionEntry+Internal.h
+//  Pods
+//
+//  Created by Dener Araújo on 06/09/20.
+//
+
+#import "OpenVPNDhcpOptionEntry.h"
+
+#include <ovpnapi.hpp>
+
+using namespace openvpn;
+
+@interface OpenVPNDhcpOptionEntry (Internal)
+
+- (instancetype)initWithDhcpOptionEntry:(ClientAPI::DhcpOptionEntry)entry;
+
+@end

Sources/OpenVPNAdapter/library/OpenVPNDhcpOptionEntry.h

@@ -0,0 +1,17 @@
+//
+//  OpenVPNDhcpOptionEntry.h
+//  Pods
+//
+//  Created by Dener Araújo on 06/09/20.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface OpenVPNDhcpOptionEntry : NSObject
+
+@property (nullable, readonly, nonatomic) NSString *type;
+@property (nullable, readonly, nonatomic) NSString *address;
+
+- (nonnull instancetype) init NS_UNAVAILABLE;
+
+@end

Sources/OpenVPNAdapter/library/OpenVPNDhcpOptionEntry.mm

@@ -0,0 +1,21 @@
+//
+//  OpenVPNDhcpOptionEntry.mm
+//  OpenVPNAdapter
+//
+//  Created by Dener Araújo on 06/09/20.
+//
+
+#import "OpenVPNDhcpOptionEntry.h"
+#import "OpenVPNDhcpOptionEntry+Internal.h"
+
+@implementation OpenVPNDhcpOptionEntry
+
+- (instancetype)initWithDhcpOptionEntry:(ClientAPI::DhcpOptionEntry)entry {
+    if (self = [super init]) {
+        _type = !entry.type.empty() ? [NSString stringWithUTF8String:entry.type.c_str()] : nil;
+        _address = !entry.address.empty() ? [NSString stringWithUTF8String:entry.address.c_str()] : nil;
+    }
+    return self;
+}
+
+@end

Sources/mbedTLS/library/entropy.c

@@ -262,7 +262,7 @@ int mbedtls_entropy_update_manual( mbedtls_entropy_context *ctx,
  */
 static int entropy_gather_internal( mbedtls_entropy_context *ctx )
 {
-    int ret, i, have_one_strong = 0;
+    int ret = 0, i, have_one_strong = 0; // Updated by Dener Araújo - 2020-09-06
     unsigned char buf[MBEDTLS_ENTROPY_MAX_GATHER];
     size_t olen;
 

Sources/mbedTLS/library/hmac_drbg.c

@@ -78,7 +78,7 @@ int mbedtls_hmac_drbg_update_ret( mbedtls_hmac_drbg_context *ctx,
     unsigned char rounds = ( additional != NULL && add_len != 0 ) ? 2 : 1;
     unsigned char sep[1];
     unsigned char K[MBEDTLS_MD_MAX_SIZE];
-    int ret;
+    int ret = 0; // Updated by Dener Araújo - 2020-09-06
 
     for( sep[0] = 0; sep[0] < rounds; sep[0]++ )
     {

Sources/mbedTLS/library/x509_crl.c

@@ -544,7 +544,7 @@ int mbedtls_x509_crl_parse( mbedtls_x509_crl *chain, const unsigned char *buf, s
 {
 #if defined(MBEDTLS_PEM_PARSE_C)
     int ret;
-    size_t use_len;
+    size_t use_len = 0; // Updated by Dener Araújo - 2020-09-06
     mbedtls_pem_context pem;
     int is_pem = 0;