wget: fix static link with gnutls

When statically linking with gnutls, we get definition clash error for
base64_encode which is also defined by gnutls.

This commit adds patch to rename base64_{encode,decode} defined in wget.

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/wget/0001-utils-rename-base64_-encode-decode.patch

@@ -0,0 +1,134 @@
+From 9e68787576fec304da23af26dca963a4cdea7765 Mon Sep 17 00:00:00 2001
+From: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
+Date: Tue, 8 Nov 2016 23:42:53 +0530
+Subject: [PATCH] utils: rename base64_{encode,decode}
+
+When statically linking with gnutls, we get definition clash error for
+base64_encode which is also defined by gnutls.
+
+/home/rahul.bedarkar/buildroot/output/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libgnutls.a(base64.o): In function `base64_encode':
+base64.c:(.text+0x148): multiple definition of `base64_encode'
+utils.o:utils.c:(.text+0x4378): first defined here
+collect2: error: ld returned 1 exit status
+
+To prevent definition clash, rename base64_{encode,decode}
+
+Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
+---
+ src/http-ntlm.c | 6 +++---
+ src/http.c      | 4 ++--
+ src/utils.c     | 8 ++++----
+ src/utils.h     | 4 ++--
+ 4 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/src/http-ntlm.c b/src/http-ntlm.c
+index 56c40ae..87f5a37 100644
+--- a/src/http-ntlm.c
++++ b/src/http-ntlm.c
+@@ -122,7 +122,7 @@ ntlm_input (struct ntlmdata *ntlm, const char *header)
+ 
+       DEBUGP (("Received a type-2 NTLM message.\n"));
+ 
+-      size = base64_decode (header, buffer);
++      size = wget_base64_decode (header, buffer);
+       if (size < 0)
+         return false;           /* malformed base64 from server */
+ 
+@@ -411,7 +411,7 @@ ntlm_output (struct ntlmdata *ntlm, const char *user, const char *passwd,
+     size = 32 + hostlen + domlen;
+ 
+     base64 = (char *) alloca (BASE64_LENGTH (size) + 1);
+-    base64_encode (ntlmbuf, size, base64);
++    wget_base64_encode (ntlmbuf, size, base64);
+ 
+     output = concat_strings ("NTLM ", base64, (char *) 0);
+     break;
+@@ -584,7 +584,7 @@ ntlm_output (struct ntlmdata *ntlm, const char *user, const char *passwd,
+ 
+     /* convert the binary blob into base64 */
+     base64 = (char *) alloca (BASE64_LENGTH (size) + 1);
+-    base64_encode (ntlmbuf, size, base64);
++    wget_base64_encode (ntlmbuf, size, base64);
+ 
+     output = concat_strings ("NTLM ", base64, (char *) 0);
+ 
+diff --git a/src/http.c b/src/http.c
+index 7e60a07..368d30d 100644
+--- a/src/http.c
++++ b/src/http.c
+@@ -2818,7 +2818,7 @@ metalink_from_http (const struct response *resp, const struct http_stat *hs,
+           char *bin_hash = alloca (dig_hash_str_len * 3 / 4 + 1);
+           size_t hash_bin_len;
+ 
+-          hash_bin_len = base64_decode (dig_hash, bin_hash);
++          hash_bin_len = wget_base64_decode (dig_hash, bin_hash);
+ 
+           /* One slot for me, one for zero-termination.  */
+           mfile->checksums =
+@@ -4546,7 +4546,7 @@ basic_authentication_encode (const char *user, const char *passwd)
+   sprintf (t1, "%s:%s", user, passwd);
+ 
+   t2 = (char *)alloca (BASE64_LENGTH (len1) + 1);
+-  base64_encode (t1, len1, t2);
++  wget_base64_encode (t1, len1, t2);
+ 
+   return concat_strings ("Basic ", t2, (char *) 0);
+ }
+diff --git a/src/utils.c b/src/utils.c
+index b07da9f..355f0ce 100644
+--- a/src/utils.c
++++ b/src/utils.c
+@@ -2140,7 +2140,7 @@ xsleep (double seconds)
+    base64 data.  */
+ 
+ size_t
+-base64_encode (const void *data, size_t length, char *dest)
++wget_base64_encode (const void *data, size_t length, char *dest)
+ {
+   /* Conversion table.  */
+   static const char tbl[64] = {
+@@ -2208,7 +2208,7 @@ base64_encode (const void *data, size_t length, char *dest)
+    This function originates from Free Recode.  */
+ 
+ ssize_t
+-base64_decode (const char *base64, void *dest)
++wget_base64_decode (const char *base64, void *dest)
+ {
+   /* Table of base64 values for first 128 characters.  Note that this
+      assumes ASCII (but so does Wget in other places).  */
+@@ -2588,7 +2588,7 @@ wg_pubkey_pem_to_der (const char *pem, unsigned char **der, size_t *der_len)
+ 
+   base64data = xmalloc (BASE64_LENGTH(stripped_pem_count));
+ 
+-  size = base64_decode (stripped_pem, base64data);
++  size = wget_base64_decode (stripped_pem, base64data);
+ 
+   if (size < 0) {
+     xfree (base64data);           /* malformed base64 from server */
+@@ -2651,7 +2651,7 @@ wg_pin_peer_pubkey (const char *pinnedpubkey, const char *pubkey, size_t pubkeyl
+           end_pos[0] = '\0';
+ 
+         /* decode base64 pinnedpubkey, 8 is length of "sha256//" */
+-        decoded_hash_length = base64_decode (begin_pos + 8, expectedsha256sumdigest);
++        decoded_hash_length = wget_base64_decode (begin_pos + 8, expectedsha256sumdigest);
+         /* if valid base64, compare sha256 digests directly */
+         if (SHA256_DIGEST_SIZE == decoded_hash_length &&
+            !memcmp (sha256sumdigest, expectedsha256sumdigest, SHA256_DIGEST_SIZE)) {
+diff --git a/src/utils.h b/src/utils.h
+index f224b73..aaac730 100644
+--- a/src/utils.h
++++ b/src/utils.h
+@@ -140,8 +140,8 @@ void xsleep (double);
+ /* How many bytes it will take to store LEN bytes in base64.  */
+ #define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
+ 
+-size_t base64_encode (const void *, size_t, char *);
+-ssize_t base64_decode (const char *, void *);
++size_t wget_base64_encode (const void *, size_t, char *);
++ssize_t wget_base64_decode (const char *, void *);
+ 
+ #ifdef HAVE_LIBPCRE
+ void *compile_pcre_regex (const char *);
+-- 
+2.6.2
+