1 files changed, 289 insertions, 0 deletions

diff --git a/meta-webserver/recipes-httpd/apache2/apache2/npn-patch-2.4.7.patch b/meta-webserver/recipes-httpd/apache2/apache2/npn-patch-2.4.7.patch
new file mode 100644
index 000000000..a4f185501
--- /dev/null
+++ b/meta-webserver/recipes-httpd/apache2/apache2/npn-patch-2.4.7.patch
@@ -0,0 +1,289 @@
+Add support for TLS Next Protocol Negotiation:
+
+* modules/ssl/mod_ssl.c, modules/ssl/mod_ssl.h: Add and implement new
+  hooks for next protocol advertisement/discovery.
+
+* modules/ssl/ssl_engine_init.c (ssl_init_ctx_callbacks): Enable
+  NPN advertisement callback in handshake.
+
+* modules/ssl/ssl_engine_io.c (ssl_io_filter_input): Invoke
+  next-protocol discovery hook.
+
+* modules/ssl/ssl_engine_kernel.c (ssl_callback_AdvertiseNextProtos):
+  New callback.
+
+* modules/ssl/ssl_private.h: Add prototype.
+
+Submitted by: Matthew Steele <mdsteele google.com>
+  with slight tweaks by jorton
+
+http://svn.apache.org/viewvc?view=revision&revision=1332643
+https://bugzilla.redhat.com//show_bug.cgi?id=809599
+Upstream-Status: Backport
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+---
+ CHANGES                         |  2 +
+ modules/ssl/mod_ssl.c           | 12 ++++++
+ modules/ssl/mod_ssl.h           | 21 +++++++++++
+ modules/ssl/ssl_engine_init.c   |  5 +++
+ modules/ssl/ssl_engine_io.c     | 24 ++++++++++++
+ modules/ssl/ssl_engine_kernel.c | 82 +++++++++++++++++++++++++++++++++++++++++
+ modules/ssl/ssl_private.h       |  6 +++
+ 7 files changed, 152 insertions(+)
+
+diff --git a/CHANGES b/CHANGES
+--- a/CHANGES
++++ b/CHANGES
+@@ -1,6 +1,8 @@
+                                                          -*- coding: utf-8 -*-
+ 
+ Changes with Apache 2.4.7
++  *) mod_ssl: Add support for TLS Next Protocol Negotiation.  PR 52210.
++     [Matthew Steele <mdsteele google.com>]
+ 
+   *) APR 1.5.0 or later is now required for the event MPM.
+   
+diff --git a/modules/ssl/mod_ssl.c b/modules/ssl/mod_ssl.c
+--- a/modules/ssl/mod_ssl.c
++++ b/modules/ssl/mod_ssl.c
+@@ -275,6 +275,18 @@ static const command_rec ssl_config_cmds[] = {
+     AP_END_CMD
+ };
+ 
++/* Implement 'modssl_run_npn_advertise_protos_hook'. */
++APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(
++    modssl, AP, int, npn_advertise_protos_hook,
++    (conn_rec *connection, apr_array_header_t *protos),
++    (connection, protos), OK, DECLINED);
++
++/* Implement 'modssl_run_npn_proto_negotiated_hook'. */
++APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(
++    modssl, AP, int, npn_proto_negotiated_hook,
++    (conn_rec *connection, const char *proto_name, apr_size_t proto_name_len),
++    (connection, proto_name, proto_name_len), OK, DECLINED);
++
+ /*
+  *  the various processing hooks
+  */
+diff --git a/modules/ssl/mod_ssl.h b/modules/ssl/mod_ssl.h
+--- a/modules/ssl/mod_ssl.h
++++ b/modules/ssl/mod_ssl.h
+@@ -63,5 +63,26 @@ APR_DECLARE_OPTIONAL_FN(int, ssl_proxy_enable, (conn_rec *));
+ 
+ APR_DECLARE_OPTIONAL_FN(int, ssl_engine_disable, (conn_rec *));
+ 
++/** The npn_advertise_protos optional hook allows other modules to add entries
++ * to the list of protocol names advertised by the server during the Next
++ * Protocol Negotiation (NPN) portion of the SSL handshake.  The hook callee is
++ * given the connection and an APR array; it should push one or more char*'s
++ * pointing to null-terminated strings (such as "http/1.1" or "spdy/2") onto
++ * the array and return OK, or do nothing and return DECLINED. */
++APR_DECLARE_EXTERNAL_HOOK(modssl, AP, int, npn_advertise_protos_hook,
++                          (conn_rec *connection, apr_array_header_t *protos));
++
++/** The npn_proto_negotiated optional hook allows other modules to discover the
++ * name of the protocol that was chosen during the Next Protocol Negotiation
++ * (NPN) portion of the SSL handshake.  Note that this may be the empty string
++ * (in which case modules should probably assume HTTP), or it may be a protocol
++ * that was never even advertised by the server.  The hook callee is given the
++ * connection, a non-null-terminated string containing the protocol name, and
++ * the length of the string; it should do something appropriate (i.e. insert or
++ * remove filters) and return OK, or do nothing and return DECLINED. */
++APR_DECLARE_EXTERNAL_HOOK(modssl, AP, int, npn_proto_negotiated_hook,
++                          (conn_rec *connection, const char *proto_name,
++                           apr_size_t proto_name_len));
++
+ #endif /* __MOD_SSL_H__ */
+ /** @} */
+diff --git a/modules/ssl/ssl_engine_init.c b/modules/ssl/ssl_engine_init.c
+--- a/modules/ssl/ssl_engine_init.c
++++ b/modules/ssl/ssl_engine_init.c
+@@ -546,6 +546,11 @@ static void ssl_init_ctx_callbacks(server_rec *s,
+     SSL_CTX_set_tmp_dh_callback(ctx,  ssl_callback_TmpDH);
+ 
+     SSL_CTX_set_info_callback(ctx, ssl_callback_Info);
++
++#ifdef HAVE_TLS_NPN
++    SSL_CTX_set_next_protos_advertised_cb(
++        ctx, ssl_callback_AdvertiseNextProtos, NULL);
++#endif
+ }
+ 
+ static void ssl_init_ctx_verify(server_rec *s,
+diff --git a/modules/ssl/ssl_engine_io.c b/modules/ssl/ssl_engine_io.c
+--- a/modules/ssl/ssl_engine_io.c
++++ b/modules/ssl/ssl_engine_io.c
+@@ -28,6 +28,7 @@
+                                   core keeps dumping.''
+                                             -- Unknown    */
+ #include "ssl_private.h"
++#include "mod_ssl.h"
+ #include "apr_date.h"
+ 
+ /*  _________________________________________________________________
+@@ -297,6 +298,7 @@ typedef struct {
+     apr_pool_t *pool;
+     char buffer[AP_IOBUFSIZE];
+     ssl_filter_ctx_t *filter_ctx;
++    int npn_finished;  /* 1 if NPN has finished, 0 otherwise */
+ } bio_filter_in_ctx_t;
+ 
+ /*
+@@ -1412,6 +1414,27 @@ static apr_status_t ssl_io_filter_input(ap_filter_t *f,
+         APR_BRIGADE_INSERT_TAIL(bb, bucket);
+     }
+ 
++#ifdef HAVE_TLS_NPN
++    /* By this point, Next Protocol Negotiation (NPN) should be completed (if
++     * our version of OpenSSL supports it).  If we haven't already, find out
++     * which protocol was decided upon and inform other modules by calling
++     * npn_proto_negotiated_hook. */
++    if (!inctx->npn_finished) {
++        const unsigned char *next_proto = NULL;
++        unsigned next_proto_len = 0;
++
++        SSL_get0_next_proto_negotiated(
++            inctx->ssl, &next_proto, &next_proto_len);
++        ap_log_cerror(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, f->c,
++                      "SSL NPN negotiated protocol: '%s'",
++                      apr_pstrmemdup(f->c->pool, (const char*)next_proto,
++                                     next_proto_len));
++        modssl_run_npn_proto_negotiated_hook(
++            f->c, (const char*)next_proto, next_proto_len);
++        inctx->npn_finished = 1;
++    }
++#endif
++
+     return APR_SUCCESS;
+ }
+ 
+@@ -1893,6 +1916,7 @@ static void ssl_io_input_add_filter(ssl_filter_ctx_t *filter_ctx, conn_rec *c,
+     inctx->block = APR_BLOCK_READ;
+     inctx->pool = c->pool;
+     inctx->filter_ctx = filter_ctx;
++    inctx->npn_finished = 0;
+ }
+ 
+ /* The request_rec pointer is passed in here only to ensure that the
+diff --git a/modules/ssl/ssl_engine_kernel.c b/modules/ssl/ssl_engine_kernel.c
+--- a/modules/ssl/ssl_engine_kernel.c
++++ b/modules/ssl/ssl_engine_kernel.c
+@@ -29,6 +29,7 @@
+                                   time I was too famous.''
+                                             -- Unknown                */
+ #include "ssl_private.h"
++#include "mod_ssl.h"
+ #include "util_md5.h"
+ 
+ static void ssl_configure_env(request_rec *r, SSLConnRec *sslconn);
+@@ -2139,3 +2140,84 @@ int ssl_callback_SRPServerParams(SSL *ssl, int *ad, void *arg)
+ }
+ 
+ #endif /* HAVE_SRP */
++
++#ifdef HAVE_TLS_NPN
++/*
++ * This callback function is executed when SSL needs to decide what protocols
++ * to advertise during Next Protocol Negotiation (NPN).  It must produce a
++ * string in wire format -- a sequence of length-prefixed strings -- indicating
++ * the advertised protocols.  Refer to SSL_CTX_set_next_protos_advertised_cb
++ * in OpenSSL for reference.
++ */
++int ssl_callback_AdvertiseNextProtos(SSL *ssl, const unsigned char **data_out,
++                                     unsigned int *size_out, void *arg)
++{
++    conn_rec *c = (conn_rec*)SSL_get_app_data(ssl);
++    apr_array_header_t *protos;
++    int num_protos;
++    unsigned int size;
++    int i;
++    unsigned char *data;
++    unsigned char *start;
++
++    *data_out = NULL;
++    *size_out = 0;
++
++    /* If the connection object is not available, then there's nothing for us
++     * to do. */
++    if (c == NULL) {
++        return SSL_TLSEXT_ERR_OK;
++    }
++
++    /* Invoke our npn_advertise_protos hook, giving other modules a chance to
++     * add alternate protocol names to advertise. */
++    protos = apr_array_make(c->pool, 0, sizeof(char*));
++    modssl_run_npn_advertise_protos_hook(c, protos);
++    num_protos = protos->nelts;
++
++    /* We now have a list of null-terminated strings; we need to concatenate
++     * them together into a single string, where each protocol name is prefixed
++     * by its length.  First, calculate how long that string will be. */
++    size = 0;
++    for (i = 0; i < num_protos; ++i) {
++        const char *string = APR_ARRAY_IDX(protos, i, const char*);
++        unsigned int length = strlen(string);
++        /* If the protocol name is too long (the length must fit in one byte),
++         * then log an error and skip it. */
++        if (length > 255) {
++            ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c,
++                          "SSL NPN protocol name too long (length=%u): %s",
++                          length, string);
++            continue;
++        }
++        /* Leave room for the length prefix (one byte) plus the protocol name
++         * itself. */
++        size += 1 + length;
++    }
++
++    /* If there is nothing to advertise (either because no modules added
++     * anything to the protos array, or because all strings added to the array
++     * were skipped), then we're done. */
++    if (size == 0) {
++        return SSL_TLSEXT_ERR_OK;
++    }
++
++    /* Now we can build the string.  Copy each protocol name string into the
++     * larger string, prefixed by its length. */
++    data = apr_palloc(c->pool, size * sizeof(unsigned char));
++    start = data;
++    for (i = 0; i < num_protos; ++i) {
++        const char *string = APR_ARRAY_IDX(protos, i, const char*);
++        apr_size_t length = strlen(string);
++        *start = (unsigned char)length;
++        ++start;
++        memcpy(start, string, length * sizeof(unsigned char));
++        start += length;
++    }
++
++    /* Success. */
++    *data_out = data;
++    *size_out = size;
++    return SSL_TLSEXT_ERR_OK;
++}
++#endif /* HAVE_TLS_NPN */
+diff --git a/modules/ssl/ssl_private.h b/modules/ssl/ssl_private.h
+--- a/modules/ssl/ssl_private.h
++++ b/modules/ssl/ssl_private.h
+@@ -123,6 +123,11 @@
+ #define MODSSL_SSL_METHOD_CONST
+ #endif
+ 
++#if OPENSSL_VERSION_NUMBER >= 0x10001000L && !defined(OPENSSL_NO_NEXTPROTONEG) \
++    && !defined(OPENSSL_NO_TLSEXT)
++#define HAVE_TLS_NPN
++#endif
++
+ #if defined(OPENSSL_FIPS)
+ #define HAVE_FIPS
+ #endif
+@@ -800,6 +805,7 @@ int          ssl_callback_ServerNameIndication(SSL *, int *, modssl_ctx_t *);
+ int         ssl_callback_SessionTicket(SSL *, unsigned char *, unsigned char *,
+                                        EVP_CIPHER_CTX *, HMAC_CTX *, int);
+ #endif
++int ssl_callback_AdvertiseNextProtos(SSL *ssl, const unsigned char **data, unsigned int *len, void *arg);
+ 
+ /**  Session Cache Support  */
+ void         ssl_scache_init(server_rec *, apr_pool_t *);
+-- 
+1.8.1.2
+