package/pound: Fix build with openssl 1.0.2

Fixes
http://autobuild.buildroot.net/results/5be/5be1082dee8387b1140d802ac3c788896a4bf980/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit d28fa26f272fddb1573da2d20e52412fd70dff4b)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pound/0001-fix-openssl-1.0.2.patch

+From eb471de8f26e0367dd08d299d2252fa8b2b958a9 Mon Sep 17 00:00:00 2001
+From: Emilio <emilio.campos@zevenet.com>
+Date: Mon, 17 Jul 2017 09:41:32 +0200
+Subject: [PATCH] [Improvement] Added support to compile pound with openssl
+ 1.0.2
+
+Signed-off-by: Emilio <emilio.campos@zevenet.com>
+
+	new file:   dh2048.h
+	modified:   svc.c
+
+Patch was downloaded from 3rd-party repo:
+https://github.com/zevenet/pound/commit/eb471de8f26e0367dd08d299d2252fa8b2b958a9
+
+This repo was announced on upstream mailinglist:
+http://www.apsis.ch/pound/pound_list/archive/2017/2017-07/1500287626000#1500287626000
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+---
+ dh2048.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
+ svc.c    | 33 +++++++++++++++++++++++++++++++++
+ 2 files changed, 86 insertions(+)
+ create mode 100644 dh2048.h
+
+diff --git a/dh2048.h b/dh2048.h
+new file mode 100644
+index 0000000..79c693c
+--- /dev/null
++++ b/dh2048.h
+@@ -0,0 +1,53 @@
++#ifndef HEADER_DH_H
++# include <openssl/dh.h>
++#endif
++
++DH *get_dh2048()
++{
++    static unsigned char dhp_2048[] = {
++	0xBF, 0x6C, 0xC6, 0xBD, 0xEA, 0x10, 0x84, 0x59, 0x40, 0xC2, 
++	0xC6, 0xA2, 0x9B, 0x19, 0xD3, 0x2E, 0x2F, 0xAB, 0xE6, 0xE4, 
++	0x1E, 0x91, 0x0D, 0x59, 0xDC, 0x96, 0x3F, 0x6E, 0x65, 0x38, 
++	0xB9, 0xBE, 0xBB, 0x8F, 0xDF, 0x73, 0xAC, 0xAC, 0xB3, 0x2F, 
++	0xA7, 0x02, 0x0B, 0x87, 0xB7, 0x3F, 0x3A, 0x42, 0x8A, 0x94, 
++	0xDD, 0xEC, 0x33, 0xA4, 0x25, 0xB1, 0xBF, 0x84, 0x91, 0x87, 
++	0xD8, 0x1C, 0x42, 0xB9, 0x8E, 0x00, 0x1F, 0x49, 0xED, 0x57, 
++	0xA4, 0x48, 0xB0, 0xCC, 0xD8, 0xB8, 0x83, 0xCA, 0x3E, 0xDF, 
++	0xA2, 0xF2, 0x07, 0x71, 0x71, 0x18, 0x1F, 0x50, 0x45, 0x3A, 
++	0x66, 0x04, 0x7F, 0x15, 0xB2, 0xA8, 0x02, 0x77, 0xCE, 0xC6, 
++	0xF9, 0x7C, 0x63, 0xE4, 0x52, 0x41, 0xFA, 0x62, 0xB9, 0x0D, 
++	0xDC, 0x08, 0x62, 0xEC, 0x00, 0xAB, 0xB0, 0xF7, 0x79, 0x48, 
++	0x75, 0x22, 0x85, 0xCC, 0x67, 0x3C, 0xEA, 0x09, 0x32, 0xAC, 
++	0x30, 0xED, 0x1E, 0x67, 0xDC, 0x74, 0xF8, 0xD9, 0xC3, 0xD0, 
++	0xA0, 0x60, 0x4D, 0xCE, 0x52, 0xBC, 0xA3, 0xE5, 0x18, 0x7B, 
++	0x0B, 0xC8, 0xCE, 0x70, 0xA2, 0xC8, 0x21, 0xCA, 0xCE, 0xA5, 
++	0xD4, 0xCB, 0x85, 0xFC, 0xC7, 0x07, 0x5C, 0x05, 0x87, 0xFC, 
++	0x2F, 0x67, 0x4D, 0x2D, 0x4F, 0xA4, 0xEE, 0x63, 0x98, 0x49, 
++	0xE4, 0x2E, 0xD7, 0x3F, 0x7D, 0x69, 0x68, 0x0A, 0xA2, 0x3E, 
++	0x5A, 0x04, 0xD4, 0xDD, 0xBB, 0xC7, 0xB4, 0x34, 0xB7, 0x21, 
++	0xD3, 0xAC, 0x99, 0xD7, 0x87, 0x45, 0x5E, 0x18, 0x68, 0x16, 
++	0x3A, 0xAF, 0xE2, 0x04, 0x57, 0xB8, 0x6A, 0xB8, 0x2F, 0x75, 
++	0xD5, 0x79, 0x96, 0x60, 0x8D, 0xD1, 0xCC, 0xD1, 0x33, 0x85, 
++	0x53, 0x88, 0x87, 0x34, 0xA6, 0x4B, 0x49, 0x24, 0x53, 0xD6, 
++	0xF1, 0x1E, 0x4E, 0x98, 0x4D, 0x6B, 0x44, 0x31, 0x94, 0xFF, 
++	0x46, 0xC2, 0x38, 0x2E, 0xEA, 0xBB
++    };
++    static unsigned char dhg_2048[] = {
++	0x05
++    };
++    DH *dh = DH_new();
++    BIGNUM *dhp_bn, *dhg_bn;
++
++    if (dh == NULL)
++        return NULL;
++    dhp_bn = BN_bin2bn(dhp_2048, sizeof (dhp_2048), NULL);
++    dhg_bn = BN_bin2bn(dhg_2048, sizeof (dhg_2048), NULL);
++    if (dhp_bn == NULL || dhg_bn == NULL
++            || !DH_set0_pqg(dh, dhp_bn, NULL, dhg_bn)) {
++        DH_free(dh);
++        BN_free(dhp_bn);
++        BN_free(dhg_bn);
++        return NULL;
++    }
++    return dh;
++}
+diff --git a/svc.c b/svc.c
+index 1341397..758dfbd 100644
+--- a/svc.c
++++ b/svc.c
+@@ -1512,6 +1512,39 @@ do_RSAgen(void)
+     return;
+ }
+ 
++
++#if OPENSSL_VERSION_NUMBER < 0x10100000
++static inline int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
++{
++	/* If the fields p and g in d are NULL, the corresponding input
++	 * parameters MUST be non-NULL.  q may remain NULL.
++	 */
++	if ((dh->p == NULL && p == NULL)
++	    || (dh->g == NULL && g == NULL))
++		return 0;
++
++	if (p != NULL) {
++		BN_free(dh->p);
++		dh->p = p;
++	}
++	if (q != NULL) {
++		BN_free(dh->q);
++		dh->q = q;
++	}
++	if (g != NULL) {
++		BN_free(dh->g);
++		dh->g = g;
++	}
++
++	if (q != NULL) {
++		dh->length = BN_num_bits(q);
++	}
++
++	return 1;
++}
++#endif
++
++
+ #include    "dh512.h"
+ 
+ #if DH_LEN == 1024