r1677153, r1677154, r1677155, r1677156, r1677159, r1677830, r1677832,
r1677834, r1677835 from trunk

mod_ssl namespacing

Proposed by: kbrand
Reviewed by: ylavic, jorton


mod_ssl namespacing: Rename ssl_util_ssl.h macros from SSL_foo to MODSSL_foo.
For related discussion, see the dev@ thread starting at:
http://mail-archives.apache.org/mod_mbox/httpd-dev/201504.mbox/%3C20150415163613.GC15209%40fintan.stsp.name%3E

mod_ssl namespacing: Rename SSL_init_app_data2_idx, SSL_get_app_data2,
and SSL_set_app_data2 from SSL_* to modssl_*. Update references in
README.dsov.* files. Rename static variable SSL_app_data2_idx to just
app_data2_idx since the symbol is internal to ssl_util_ssl.c.

mod_ssl namespacing: SSL_read_PrivateKey -> modssl_read_privatekey

mod_ssl namespacing: SSL_smart_shutdown -> modssl_smart_shutdown

mod_ssl namespacing: SSL_X509_getBC -> modssl_X509_getBC

mod_ssl namespacing: Make SSL_ASN1_STRING_to_utf8 a static function inside
ssl_util_ssl.c (no callers outside this file). The new static function name
chosen is convert_asn1_to_utf8, based on the assumption that neither SSL_
nor ASN1_ are safe prefixes to use without potential future overlap.

mod_ssl namespacing: Rename SSL_X509_NAME_ENTRY_to_string to
modssl_X509_NAME_ENTRY_to_string.

mod_ssl namespacing: SSL_X509_NAME_to_string -> modssl_X509_NAME_to_string

mod_ssl namespacing: SSL_X509_getSAN -> modssl_X509_getSAN

mod_ssl namespacing: Make SSL_X509_getIDs a static function inside the
file ssl_util_ssl.c (no outside callers). Rename to just getIDs().

mod_ssl namespacing: SSL_X509_match_name -> modssl_X509_match_name

mod_ssl namespacing: SSL_X509_INFO_load_file -> modssl_X509_INFO_load_file

mod_ssl namespacing: Merge SSL_X509_INFO_load_path() into its only caller
ssl_init_proxy_certs() in ssl_engine_init.c. No functional change.
Review by: kbrand

mod_ssl namespacing: Move modssl_X509_INFO_load_file() into ssl_engine_init.c
and make it a static function called load_x509_info().

mod_ssl namespacing: Move SSL_CTX_use_certificate_chain() into ssl_engine_init.c
and make it a static function called use_certificate_chain().

mod_ssl namespacing: Rename SSL_SESSION_id2sz() to modssl_SSL_SESSION_id2sz().


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Backport changes that somehow missed the backport process.

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bye bye mod_h2, hello mod_http2

Reviewed/backported by: jim


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Merge r1697855, r1697339, r1696428, r1696266, r1696264, r1695874, r1695727, r1692516, r1692486, r1610674, r1685069, r1693918, r1698116, r1698133, r1694950, r1700968, r1701005, r1701145, r1701178 from trunk:

adding ap_get_protocol(c) which safeguards against NULL returns, for use instead of direct calling ap_run_protocol_get

changed Protocols to let vhosts override servers, removed old H2Engine example from readme

creating ap_array_index in util, forwarding scheme into request processing, enabling SSL vars only when scheme is not http:, delayed connection creation until task worker assignment

removed unnecessary lingering_close and sbh update on end of protocol upgrade handling

introducing ap_array_index in util, used in protocol and mod_h2

fixes existing protocol missing in selection if not explicitly proposed

new directive ProtocolsHonorOrder, added documentation for Protocols feature, changed preference selection and config merging

removed accidental code

new Protocols directive and core API changes to enable protocol switching on HTTP Upgrade or ALPN, implemented in mod_ssl and mod_h2

SECURITY (CVE-2014-0117): Fix a crash in mod_proxy.  In a reverse
proxy configuration, a remote attacker could send a carefully crafted
request which could crash a server process, resulting in denial of
service.

Thanks to Marek Kroemeke working with HP's Zero Day Initiative for
reporting this issue.

* server/util.c (ap_parse_token_list_strict): New function.

* modules/proxy/proxy_util.c (find_conn_headers): Use it here.

* modules/proxy/mod_proxy_http.c (ap_proxy_http_process_response):
  Send a 400 for a malformed Connection header.

Submitted by: Edward Lu, breser, covener


http, mod_ssl: Introduce and return the 421 (Misdirected Request) status code
for clients requesting a hostname on a reused connection whose SNI (from the
TLS handshake) does not match.
PR 5802.

This allows HTTP/2 clients to fall back to a new connection as per:
https://tools.ietf.org/html/rfc7540#section-9.1.2

Proposed by: Stefan Eissing <stefan eissing.org>
Reviewed by: ylavic


c89


Allowing protocol_propose hooks to be called with offers=NULL, clarifying semantics as proposed by chaosed0@gmail.com

giving ap_array_index a start parameter, adding ap_array_contains

ap_process_request needs exportation for use in mod_h2 on Windows


final final change to the new ap_array_str_* functions after review

changed Protocols default to http/1.1 only, updated documentation, changed ap_select_protocol() to return NULL when no protocol could be agreed upon

mod_ssl: fix compiler warning (bad cast).

improvements in ap_select_protocol(), supplied by yann ylavic
Submitted by: icing, jorton, ylavic, covener, icing, icing, gsmith, icing, icing, ylavic, icing
Reviewed/backported by: jim


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Don't count initial handshake I/O when determining the first byte.
PR58454

Submitted By: Konstantin J. Chernov
Committed By: covener




Avoid storing request stuff in r->connection->conn_config to
avoid problems with e.g. write completion.


Submitted by: covener
Reviewed/backported by: jim


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Fix a spurious test where a condition is always true:
      if ((cfg->skipto != NULL) && (ctx->flags | ENC_SKIPTO)) {
                                    ^^^^^^^^^^^^^^^^^^^^^^^

This is apparently harmless because, in 'xml2enc_filter_init', the ENC_SKIPTO bit of 'flags' is set to ENC_SKIPTO if 'skipto' is non-NULL.
Submitted by: jailletc36
Reviewed/backported by: jim


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r->headers when mod_cache is enabled and the response
is cached for the first time.

Submitted by: elu
Reviewed by: ylavic, minfrin


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