Initial dump from Zyxel

package/mailsend/patches/001-ZYXEL_ENHANCE_use_IPv4_query_smtp_server_at_first_JakeChang.patch

@@ -0,0 +1,46 @@
+Index: mailsend-1.17b15/smtp.c
+===================================================================
+--- mailsend-1.17b15.orig/smtp.c	2014-05-26 02:24:43.000000000 +0800
++++ mailsend-1.17b15/smtp.c	2017-03-29 13:37:43.317648230 +0800
+@@ -51,9 +51,33 @@
+     }
+     else
+     {
++#if 1 /* Zyxel, if user not select protocol, query IPv4 address at first, try IPv6 if fail. */
++		showVerbose("Use IPv4 address of SMTP server at first, try IPv6 if fail.\n");
++#else
+         showVerbose("Will detect IPv4 or IPv6 automatically\n");
++#endif
+     }
+     
++#if 1 /* Zyxel, if user not select protocol, query IPv4 address at first, try IPv6 if fail. */
++	if(g_use_protocol == MSOCK_USE_AUTO)
++	{
++		sfd=clientSocket(MSOCK_USE_IPV4, smtp_server,port, g_connect_timeout);
++		if (sfd == INVALID_SOCKET)
++		{
++			sfd=clientSocket(MSOCK_USE_IPV6, smtp_server,port, g_connect_timeout);
++			if (sfd == INVALID_SOCKET)
++			{
++				errorMsg("Could not connect to SMTP server \"%s\" at port %d",
++						smtp_server,port);
++				return (INVALID_SOCKET);
++			}
++		}
++	}
++	else
++	{
++		sfd=clientSocket(g_use_protocol, smtp_server,port, g_connect_timeout);
++	}
++#else
+     sfd=clientSocket(g_use_protocol, smtp_server,port, g_connect_timeout);
+     if (sfd == INVALID_SOCKET)
+     {
+@@ -61,6 +85,7 @@
+                 smtp_server,port);
+         return (INVALID_SOCKET);
+     }
++#endif
+ 
+     /* set the socket to msock lib's static place, not thread safe*/
+     msock_set_socket(sfd);

package/mailsend/patches/002-ZYXEL_ENHANCE_upgrade_openssl_JakeChang.patch

@@ -0,0 +1,37 @@
+Index: mailsend-1.17b15/utils.c
+===================================================================
+--- mailsend-1.17b15.orig/utils.c	2014-05-26 02:24:43.000000000 +0800
++++ mailsend-1.17b15/utils.c	2020-02-07 12:01:36.906823900 +0800
+@@ -791,8 +791,13 @@
+     unsigned char
+         hmac_md5[16];
+ 
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+     HMAC_CTX
+         ctx;
++#else
++    HMAC_CTX
++        *ctx;
++#endif
+ 
+     const EVP_MD
+         *md5=NULL;
+@@ -831,11 +836,18 @@
+     showVerbose("Challenge After decoding: %s\n",data);
+ 
+     /* take HMAC-MD5 of the challenge*/
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+     md5=EVP_get_digestbyname("md5");
+     HMAC_CTX_init(&ctx);
+     HMAC_Init(&ctx,secret,strlen(secret),md5);
+     HMAC_Update(&ctx,data,data_len);
+     HMAC_Final(&ctx,hmac_md5,&hmac_len);
++#else
++    ctx = HMAC_CTX_new();
++    HMAC_Init_ex(ctx,secret,strlen(secret),EVP_md5(),NULL);
++    HMAC_Update(ctx,data,data_len);
++    HMAC_Final(ctx,hmac_md5,&hmac_len);
++#endif
+ 
+     /* convert the digest to hex */
+     memset(hex,0,sizeof(hex));