busybox: Backport fix to wget

packages/busybox/wget.c.patch

@@ -0,0 +1,57 @@
+Apply fix for https://bugs.busybox.net/show_bug.cgi?id=9471 from git
+
+diff --git a/networking/wget.c b/networking/wget.c
+index c82086878..d5a92a950 100644
+--- a/networking/wget.c
++++ b/networking/wget.c
+@@ -137,6 +137,8 @@
+ #endif
+ 
+ 
++#define SSL_SUPPORTED (ENABLE_FEATURE_WGET_OPENSSL || ENABLE_FEATURE_WGET_SSL_HELPER)
++
+ struct host_info {
+ 	char *allocated;
+ 	const char *path;
+@@ -147,7 +149,7 @@ struct host_info {
+ };
+ static const char P_FTP[] ALIGN1 = "ftp";
+ static const char P_HTTP[] ALIGN1 = "http";
+-#if ENABLE_FEATURE_WGET_OPENSSL || ENABLE_FEATURE_WGET_SSL_HELPER
++#if SSL_SUPPORTED
+ static const char P_HTTPS[] ALIGN1 = "https";
+ #endif
+ 
+@@ -448,7 +450,7 @@ static void parse_url(const char *src_url, struct host_info *h)
+ 		if (strcmp(url, P_FTP) == 0) {
+ 			h->port = bb_lookup_port(P_FTP, "tcp", 21);
+ 		} else
+-#if ENABLE_FEATURE_WGET_OPENSSL || ENABLE_FEATURE_WGET_SSL_HELPER
++#if SSL_SUPPORTED
+ 		if (strcmp(url, P_HTTPS) == 0) {
+ 			h->port = bb_lookup_port(P_HTTPS, "tcp", 443);
+ 			h->protocol = P_HTTPS;
+@@ -1089,12 +1091,17 @@ static void download_one_url(const char *url)
+ 		}
+ 
+ 		fflush(sfp);
+-		/* If we use SSL helper, keeping our end of the socket open for writing
+-		 * makes our end (i.e. the same fd!) readable (EAGAIN instead of EOF)
+-		 * even after child closes its copy of the fd.
+-		 * This helps:
+-		 */
+-		shutdown(fileno(sfp), SHUT_WR);
++
++#if SSL_SUPPORTED
++		if (target.protocol == P_HTTPS) {
++			/* If we use SSL helper, keeping our end of the socket open for writing
++			 * makes our end (i.e. the same fd!) readable (EAGAIN instead of EOF)
++			 * even after child closes its copy of the fd.
++			 * This helps:
++			 */
++			shutdown(fileno(sfp), SHUT_WR);
++		}
++#endif
+ 
+ 		/*
+ 		 * Retrieve HTTP response line and check for "200" status code.