upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

1 files changed, 1181 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c b/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c
new file mode 100644
index 00000000..84d5fb10
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c
@@ -0,0 +1,1181 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define CORE_PRIVATE
+
+#include "mod_proxy.h"
+#include "mod_core.h"
+
+#include "apr_optional.h"
+
+#ifndef MAX
+#define MAX(x,y) ((x) >= (y) ? (x) : (y))
+#endif
+
+/*
+ * A Web proxy module. Stages:
+ *
+ *  translate_name: set filename to proxy:<URL>
+ *  map_to_storage: run proxy_walk (rather than directory_walk/file_walk)
+ *                  can't trust directory_walk/file_walk since these are
+ *                  not in our filesystem.  Prevents mod_http from serving
+ *                  the TRACE request we will set aside to handle later.
+ *  type_checker:   set type to PROXY_MAGIC_TYPE if filename begins proxy:
+ *  fix_ups:        convert the URL stored in the filename to the
+ *                  canonical form.
+ *  handler:        handle proxy requests
+ */
+
+/* -------------------------------------------------------------- */
+/* Translate the URL into a 'filename' */
+
+static int alias_match(const char *uri, const char *alias_fakename)
+{
+    const char *end_fakename = alias_fakename + strlen(alias_fakename);
+    const char *aliasp = alias_fakename, *urip = uri;
+
+    while (aliasp < end_fakename) {
+        if (*aliasp == '/') {
+            /* any number of '/' in the alias matches any number in
+             * the supplied URI, but there must be at least one...
+             */
+            if (*urip != '/')
+                return 0;
+
+            while (*aliasp == '/')
+                ++aliasp;
+            while (*urip == '/')
+                ++urip;
+        }
+        else {
+            /* Other characters are compared literally */
+            if (*urip++ != *aliasp++)
+                return 0;
+        }
+    }
+
+    /* Check last alias path component matched all the way */
+
+    if (aliasp[-1] != '/' && *urip != '\0' && *urip != '/')
+        return 0;
+
+    /* Return number of characters from URI which matched (may be
+     * greater than length of alias, since we may have matched
+     * doubled slashes)
+     */
+
+    return urip - uri;
+}
+
+/* Detect if an absoluteURI should be proxied or not.  Note that we
+ * have to do this during this phase because later phases are
+ * "short-circuiting"... i.e. translate_names will end when the first
+ * module returns OK.  So for example, if the request is something like:
+ *
+ * GET http://othervhost/cgi-bin/printenv HTTP/1.0
+ *
+ * mod_alias will notice the /cgi-bin part and ScriptAlias it and
+ * short-circuit the proxy... just because of the ordering in the
+ * configuration file.
+ */
+static int proxy_detect(request_rec *r)
+{
+    void *sconf = r->server->module_config;
+    proxy_server_conf *conf;
+
+    conf = (proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
+
+    /* Ick... msvc (perhaps others) promotes ternary short results to int */
+
+    if (conf->req && r->parsed_uri.scheme) {
+        /* but it might be something vhosted */
+        if (!(r->parsed_uri.hostname
+              && !strcasecmp(r->parsed_uri.scheme, ap_http_method(r))
+              && ap_matches_request_vhost(r, r->parsed_uri.hostname,
+                                          (apr_port_t)(r->parsed_uri.port_str ? r->parsed_uri.port 
+                                                       : ap_default_port(r))))) {
+            r->proxyreq = PROXYREQ_PROXY;
+            r->uri = r->unparsed_uri;
+            r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
+            r->handler = "proxy-server";
+        }
+    }
+    /* We need special treatment for CONNECT proxying: it has no scheme part */
+    else if (conf->req && r->method_number == M_CONNECT
+             && r->parsed_uri.hostname
+             && r->parsed_uri.port_str) {
+        r->proxyreq = PROXYREQ_PROXY;
+        r->uri = r->unparsed_uri;
+        r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
+        r->handler = "proxy-server";
+    }
+    return DECLINED;
+}
+
+static int proxy_trans(request_rec *r)
+{
+    void *sconf = r->server->module_config;
+    proxy_server_conf *conf =
+    (proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
+    int i, len;
+    struct proxy_alias *ent = (struct proxy_alias *) conf->aliases->elts;
+
+    if (r->proxyreq) {
+        /* someone has already set up the proxy, it was possibly ourselves
+         * in proxy_detect
+         */
+        return OK;
+    }
+
+    /* XXX: since r->uri has been manipulated already we're not really
+     * compliant with RFC1945 at this point.  But this probably isn't
+     * an issue because this is a hybrid proxy/origin server.
+     */
+
+    for (i = 0; i < conf->aliases->nelts; i++) {
+        len = alias_match(r->uri, ent[i].fake);
+
+       if (len > 0) {
+           if ((ent[i].real[0] == '!' ) && ( ent[i].real[1] == 0 )) {
+               return DECLINED;
+           }
+
+           r->filename = apr_pstrcat(r->pool, "proxy:", ent[i].real,
+                                 (r->uri + len ), NULL);
+           r->handler = "proxy-server";
+           r->proxyreq = PROXYREQ_REVERSE;
+           return OK;
+       }
+    }
+    return DECLINED;
+}
+
+static int proxy_walk(request_rec *r)
+{
+    proxy_server_conf *sconf = ap_get_module_config(r->server->module_config,
+                                                    &proxy_module);
+    ap_conf_vector_t *per_dir_defaults = r->server->lookup_defaults;
+    ap_conf_vector_t **sec_proxy = (ap_conf_vector_t **) sconf->sec_proxy->elts;
+    ap_conf_vector_t *entry_config;
+    proxy_dir_conf *entry_proxy;
+    int num_sec = sconf->sec_proxy->nelts;
+    /* XXX: shouldn't we use URI here?  Canonicalize it first?
+     * Pass over "proxy:" prefix 
+     */
+    const char *proxyname = r->filename + 6;
+    int j;
+
+    for (j = 0; j < num_sec; ++j) 
+    {
+        entry_config = sec_proxy[j];
+        entry_proxy = ap_get_module_config(entry_config, &proxy_module);
+
+        /* XXX: What about case insensitive matching ???
+         * Compare regex, fnmatch or string as appropriate
+         * If the entry doesn't relate, then continue 
+         */
+        if (entry_proxy->r 
+              ? ap_regexec(entry_proxy->r, proxyname, 0, NULL, 0)
+              : (entry_proxy->p_is_fnmatch
+                   ? apr_fnmatch(entry_proxy->p, proxyname, 0)
+                   : strncmp(proxyname, entry_proxy->p, 
+                                        strlen(entry_proxy->p)))) {
+            continue;
+        }
+        per_dir_defaults = ap_merge_per_dir_configs(r->pool, per_dir_defaults,
+                                                             entry_config);
+    }
+
+    r->per_dir_config = per_dir_defaults;
+
+    return OK;
+}
+
+static int proxy_map_location(request_rec *r)
+{
+    int access_status;
+
+    if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
+        return DECLINED;
+
+    /* Don't let the core or mod_http map_to_storage hooks handle this,
+     * We don't need directory/file_walk, and we want to TRACE on our own.
+     */
+    if ((access_status = proxy_walk(r))) {
+        ap_die(access_status, r);
+        return access_status;
+    }
+
+    return OK;
+}
+
+/* -------------------------------------------------------------- */
+/* Fixup the filename */
+
+/*
+ * Canonicalise the URL
+ */
+static int proxy_fixup(request_rec *r)
+{
+    char *url, *p;
+    int access_status;
+
+    if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
+        return DECLINED;
+
+    /* XXX: Shouldn't we try this before we run the proxy_walk? */
+    url = &r->filename[6];
+
+    /* canonicalise each specific scheme */
+    if ((access_status = proxy_run_canon_handler(r, url))) {
+        return access_status;
+    }
+
+    p = strchr(url, ':');
+    if (p == NULL || p == url)
+        return HTTP_BAD_REQUEST;
+
+    return OK;		/* otherwise; we've done the best we can */
+}
+
+/* Send a redirection if the request contains a hostname which is not */
+/* fully qualified, i.e. doesn't have a domain name appended. Some proxy */
+/* servers like Netscape's allow this and access hosts from the local */
+/* domain in this case. I think it is better to redirect to a FQDN, since */
+/* these will later be found in the bookmarks files. */
+/* The "ProxyDomain" directive determines what domain will be appended */
+static int proxy_needsdomain(request_rec *r, const char *url, const char *domain)
+{
+    char *nuri;
+    const char *ref;
+
+    /* We only want to worry about GETs */
+    if (!r->proxyreq || r->method_number != M_GET || !r->parsed_uri.hostname)
+        return DECLINED;
+
+    /* If host does contain a dot already, or it is "localhost", decline */
+    if (strchr(r->parsed_uri.hostname, '.') != NULL
+     || strcasecmp(r->parsed_uri.hostname, "localhost") == 0)
+        return DECLINED;	/* host name has a dot already */
+
+    ref = apr_table_get(r->headers_in, "Referer");
+
+    /* Reassemble the request, but insert the domain after the host name */
+    /* Note that the domain name always starts with a dot */
+    r->parsed_uri.hostname = apr_pstrcat(r->pool, r->parsed_uri.hostname,
+                                         domain, NULL);
+    nuri = apr_uri_unparse(r->pool,
+                           &r->parsed_uri,
+                           APR_URI_UNP_REVEALPASSWORD);
+
+    apr_table_set(r->headers_out, "Location", nuri);
+    ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
+                  "Domain missing: %s sent to %s%s%s", r->uri,
+                  apr_uri_unparse(r->pool, &r->parsed_uri,
+                                  APR_URI_UNP_OMITUSERINFO),
+                  ref ? " from " : "", ref ? ref : "");
+
+    return HTTP_MOVED_PERMANENTLY;
+}
+
+/* -------------------------------------------------------------- */
+/* Invoke handler */
+
+static int proxy_handler(request_rec *r)
+{
+    char *url, *scheme, *p;
+    const char *p2;
+    void *sconf = r->server->module_config;
+    proxy_server_conf *conf = (proxy_server_conf *)
+        ap_get_module_config(sconf, &proxy_module);
+    apr_array_header_t *proxies = conf->proxies;
+    struct proxy_remote *ents = (struct proxy_remote *) proxies->elts;
+    int i, rc, access_status;
+    int direct_connect = 0;
+    const char *str;
+    long maxfwd;
+
+    /* is this for us? */
+    if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
+        return DECLINED;
+
+    /* handle max-forwards / OPTIONS / TRACE */
+    if ((str = apr_table_get(r->headers_in, "Max-Forwards"))) {
+        maxfwd = strtol(str, NULL, 10);
+        if (maxfwd < 1) {
+            switch (r->method_number) {
+            case M_TRACE: {
+                int access_status;
+                r->proxyreq = PROXYREQ_NONE;
+                if ((access_status = ap_send_http_trace(r)))
+                    ap_die(access_status, r);
+                else
+                    ap_finalize_request_protocol(r);
+                return OK;
+            }
+            case M_OPTIONS: {
+                int access_status;
+                r->proxyreq = PROXYREQ_NONE;
+                if ((access_status = ap_send_http_options(r)))
+                    ap_die(access_status, r);
+                else
+                    ap_finalize_request_protocol(r);
+                return OK;
+            }
+            default: {
+                return ap_proxyerror(r, HTTP_BAD_GATEWAY,
+                                     "Max-Forwards has reached zero - proxy loop?");
+            }
+            }
+        }
+        maxfwd = (maxfwd > 0) ? maxfwd - 1 : 0;
+    }
+    else {
+        /* set configured max-forwards */
+        maxfwd = conf->maxfwd;
+    }
+    apr_table_set(r->headers_in, "Max-Forwards", 
+                  apr_psprintf(r->pool, "%ld", (maxfwd > 0) ? maxfwd : 0));
+
+    if (r->method_number == M_TRACE) {
+        core_server_config *coreconf = (core_server_config *)
+                            ap_get_module_config(sconf, &core_module);
+
+        if (coreconf->trace_enable == AP_TRACE_DISABLE) 
+        {
+            /* Allow "error-notes" string to be printed by ap_send_error_response()
+             * Note; this goes nowhere, canned error response need an overhaul.
+             */
+            apr_table_setn(r->notes, "error-notes",
+                           "TRACE forbidden by server configuration");
+            apr_table_setn(r->notes, "verbose-error-to", "*");
+            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                          "proxy: TRACE forbidden by server configuration");
+            return HTTP_FORBIDDEN;
+        }
+
+        /* Can't test ap_should_client_block, we aren't ready to send
+         * the client a 100 Continue response till the connection has
+         * been established
+         */
+        if (coreconf->trace_enable != AP_TRACE_EXTENDED 
+            && (r->read_length || r->read_chunked || r->remaining))
+        {
+            /* Allow "error-notes" string to be printed by ap_send_error_response()
+             * Note; this goes nowhere, canned error response need an overhaul.
+             */
+            apr_table_setn(r->notes, "error-notes",
+                           "TRACE with request body is not allowed");
+            apr_table_setn(r->notes, "verbose-error-to", "*");
+            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                          "proxy: TRACE with request body is not allowed");
+            return HTTP_REQUEST_ENTITY_TOO_LARGE;
+        }
+    }
+
+    url = r->filename + 6;
+    p = strchr(url, ':');
+    if (p == NULL)
+        return HTTP_BAD_REQUEST;
+
+    /* If the host doesn't have a domain name, add one and redirect. */
+    if (conf->domain != NULL) {
+        rc = proxy_needsdomain(r, url, conf->domain);
+        if (ap_is_HTTP_REDIRECT(rc))
+            return HTTP_MOVED_PERMANENTLY;
+    }
+
+    *p = '\0';
+    scheme = apr_pstrdup(r->pool, url);
+    *p = ':';
+
+    /* Check URI's destination host against NoProxy hosts */
+    /* Bypass ProxyRemote server lookup if configured as NoProxy */
+    /* we only know how to handle communication to a proxy via http */
+    /*if (strcasecmp(scheme, "http") == 0) */
+    {
+        int ii;
+        struct dirconn_entry *list = (struct dirconn_entry *) conf->dirconn->elts;
+
+        for (direct_connect = ii = 0; ii < conf->dirconn->nelts && !direct_connect; ii++) {
+            direct_connect = list[ii].matcher(&list[ii], r);
+        }
+#if DEBUGGING
+        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+                      (direct_connect) ? "NoProxy for %s" : "UseProxy for %s",
+                      r->uri);
+#endif
+    }
+
+    /* firstly, try a proxy, unless a NoProxy directive is active */
+    if (!direct_connect) {
+        for (i = 0; i < proxies->nelts; i++) {
+            p2 = ap_strchr_c(ents[i].scheme, ':');  /* is it a partial URL? */
+            if (strcmp(ents[i].scheme, "*") == 0 ||
+                (ents[i].use_regex && 
+                 ap_regexec(ents[i].regexp, url, 0,NULL, 0) == 0) ||
+                (p2 == NULL && strcasecmp(scheme, ents[i].scheme) == 0) ||
+                (p2 != NULL &&
+                 strncasecmp(url, ents[i].scheme, strlen(ents[i].scheme)) == 0)) {
+
+                /* handle the scheme */
+                ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
+                             "Trying to run scheme_handler against proxy");
+                access_status = proxy_run_scheme_handler(r, conf, url, ents[i].hostname, ents[i].port);
+
+                /* an error or success */
+                if (access_status != DECLINED && access_status != HTTP_BAD_GATEWAY) {
+                    return access_status;
+                }
+                /* we failed to talk to the upstream proxy */
+            }
+        }
+    }
+
+    /* otherwise, try it direct */
+    /* N.B. what if we're behind a firewall, where we must use a proxy or
+     * give up??
+     */
+
+    /* handle the scheme */
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
+                 "Trying to run scheme_handler");
+    access_status = proxy_run_scheme_handler(r, conf, url, NULL, 0);
+    if (DECLINED == access_status) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, r->server,
+                    "proxy: No protocol handler was valid for the URL %s. "
+                    "If you are using a DSO version of mod_proxy, make sure "
+                    "the proxy submodules are included in the configuration "
+                    "using LoadModule.", r->uri);
+        return HTTP_FORBIDDEN;
+    }
+    return access_status;
+}
+
+/* -------------------------------------------------------------- */
+/* Setup configurable data */
+
+static void * create_proxy_config(apr_pool_t *p, server_rec *s)
+{
+    proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf));
+
+    ps->sec_proxy = apr_array_make(p, 10, sizeof(ap_conf_vector_t *));
+    ps->proxies = apr_array_make(p, 10, sizeof(struct proxy_remote));
+    ps->aliases = apr_array_make(p, 10, sizeof(struct proxy_alias));
+    ps->raliases = apr_array_make(p, 10, sizeof(struct proxy_alias));
+    ps->noproxies = apr_array_make(p, 10, sizeof(struct noproxy_entry));
+    ps->dirconn = apr_array_make(p, 10, sizeof(struct dirconn_entry));
+    ps->allowed_connect_ports = apr_array_make(p, 10, sizeof(int));
+    ps->domain = NULL;
+    ps->viaopt = via_off; /* initially backward compatible with 1.3.1 */
+    ps->viaopt_set = 0; /* 0 means default */
+    ps->req = 0;
+    ps->req_set = 0;
+    ps->recv_buffer_size = 0; /* this default was left unset for some reason */
+    ps->recv_buffer_size_set = 0;
+    ps->io_buffer_size = AP_IOBUFSIZE;
+    ps->io_buffer_size_set = 0;
+    ps->maxfwd = DEFAULT_MAX_FORWARDS;
+    ps->maxfwd_set = 0;
+    ps->error_override = 0; 
+    ps->error_override_set = 0; 
+    ps->preserve_host_set = 0;
+    ps->preserve_host = 0;    
+    ps->timeout = 0;
+    ps->timeout_set = 0;
+    ps->badopt = bad_error;
+    ps->badopt_set = 0;
+    return ps;
+}
+
+static void * merge_proxy_config(apr_pool_t *p, void *basev, void *overridesv)
+{
+    proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf));
+    proxy_server_conf *base = (proxy_server_conf *) basev;
+    proxy_server_conf *overrides = (proxy_server_conf *) overridesv;
+
+    ps->proxies = apr_array_append(p, base->proxies, overrides->proxies);
+    ps->sec_proxy = apr_array_append(p, base->sec_proxy, overrides->sec_proxy);
+    ps->aliases = apr_array_append(p, base->aliases, overrides->aliases);
+    ps->raliases = apr_array_append(p, base->raliases, overrides->raliases);
+    ps->noproxies = apr_array_append(p, base->noproxies, overrides->noproxies);
+    ps->dirconn = apr_array_append(p, base->dirconn, overrides->dirconn);
+    ps->allowed_connect_ports = apr_array_append(p, base->allowed_connect_ports, overrides->allowed_connect_ports);
+
+    ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain;
+    ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt;
+    ps->viaopt_set = overrides->viaopt_set || base->viaopt_set;
+    ps->req = (overrides->req_set == 0) ? base->req : overrides->req;
+    ps->req_set = overrides->req_set || base->req_set;
+    ps->recv_buffer_size = (overrides->recv_buffer_size_set == 0) ? base->recv_buffer_size : overrides->recv_buffer_size;
+    ps->recv_buffer_size_set = overrides->recv_buffer_size_set || base->recv_buffer_size_set;
+    ps->io_buffer_size = (overrides->io_buffer_size_set == 0) ? base->io_buffer_size : overrides->io_buffer_size;
+    ps->io_buffer_size_set = overrides->io_buffer_size_set || base->io_buffer_size_set;
+    ps->maxfwd = (overrides->maxfwd_set == 0) ? base->maxfwd : overrides->maxfwd;
+    ps->maxfwd_set = overrides->maxfwd_set || base->maxfwd_set;
+    ps->error_override = (overrides->error_override_set == 0) ? base->error_override : overrides->error_override;
+    ps->error_override_set = overrides->error_override_set || base->error_override_set;
+    ps->preserve_host = (overrides->preserve_host_set == 0) ? base->preserve_host : overrides->preserve_host;
+    ps->preserve_host_set = overrides->preserve_host_set || base->preserve_host_set;
+    ps->timeout= (overrides->timeout_set == 0) ? base->timeout : overrides->timeout;
+    ps->timeout_set = overrides->timeout_set || base->timeout_set;
+    ps->badopt = (overrides->badopt_set == 0) ? base->badopt : overrides->badopt;
+    ps->badopt_set = overrides->badopt_set || base->badopt_set;
+
+    return ps;
+}
+
+static void *create_proxy_dir_config(apr_pool_t *p, char *dummy)
+{
+    proxy_dir_conf *new =
+        (proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf));
+
+    /* Filled in by proxysection, when applicable */
+
+    return (void *) new;
+}
+
+static void *merge_proxy_dir_config(apr_pool_t *p, void *basev, void *addv)
+{
+    proxy_dir_conf *new = (proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf));
+    proxy_dir_conf *add = (proxy_dir_conf *) addv;
+    proxy_dir_conf *base = (proxy_dir_conf *) basev;
+
+    new->p = add->p;
+    new->p_is_fnmatch = add->p_is_fnmatch;
+    new->r = add->r;
+    new->ftp_directory_charset = add->ftp_directory_charset ?
+                                 add->ftp_directory_charset :
+                                 base->ftp_directory_charset;
+    return new;
+}
+
+
+static const char *
+    add_proxy(cmd_parms *cmd, void *dummy, const char *f1, const char *r1, int regex)
+{
+    server_rec *s = cmd->server;
+    proxy_server_conf *conf =
+    (proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module);
+    struct proxy_remote *new;
+    char *p, *q;
+    char *r, *f, *scheme;
+    regex_t *reg = NULL;
+    int port;
+
+    r = apr_pstrdup(cmd->pool, r1);
+    scheme = apr_pstrdup(cmd->pool, r1);
+    f = apr_pstrdup(cmd->pool, f1);
+    p = strchr(r, ':');
+    if (p == NULL || p[1] != '/' || p[2] != '/' || p[3] == '\0') {
+        if (regex)
+            return "ProxyRemoteMatch: Bad syntax for a remote proxy server";
+        else
+            return "ProxyRemote: Bad syntax for a remote proxy server";
+    }
+    else {
+        scheme[p-r] = 0;
+    }
+    q = strchr(p + 3, ':');
+    if (q != NULL) {
+        if (sscanf(q + 1, "%u", &port) != 1 || port > 65535) {
+            if (regex)
+                return "ProxyRemoteMatch: Bad syntax for a remote proxy server (bad port number)";
+            else
+                return "ProxyRemote: Bad syntax for a remote proxy server (bad port number)";
+        }
+        *q = '\0';
+    }
+    else
+        port = -1;
+    *p = '\0';
+    if (regex) {
+        reg = ap_pregcomp(cmd->pool, f, REG_EXTENDED);
+        if (!reg)
+            return "Regular expression for ProxyRemoteMatch could not be compiled.";
+    }
+    else
+        if (strchr(f, ':') == NULL)
+            ap_str_tolower(f);		/* lowercase scheme */
+    ap_str_tolower(p + 3);		/* lowercase hostname */
+
+    if (port == -1) {
+        port = apr_uri_port_of_scheme(scheme);
+    }
+
+    new = apr_array_push(conf->proxies);
+    new->scheme = f;
+    new->protocol = r;
+    new->hostname = p + 3;
+    new->port = port;
+    new->regexp = reg;
+    new->use_regex = regex;
+    return NULL;
+}
+
+static const char *
+    add_proxy_noregex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1)
+{
+    return add_proxy(cmd, dummy, f1, r1, 0);
+}
+
+static const char *
+    add_proxy_regex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1)
+{
+    return add_proxy(cmd, dummy, f1, r1, 1);
+}
+
+static const char *
+    add_pass(cmd_parms *cmd, void *dummy, const char *f, const char *r)
+{
+    server_rec *s = cmd->server;
+    proxy_server_conf *conf =
+    (proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module);
+    struct proxy_alias *new;
+    if (r!=NULL && cmd->path == NULL ) {
+        new = apr_array_push(conf->aliases);
+        new->fake = f;
+        new->real = r;
+    } else if (r==NULL && cmd->path != NULL) {
+        new = apr_array_push(conf->aliases);
+        new->fake = cmd->path;
+        new->real = f;
+    } else {
+        if ( r== NULL)
+            return "ProxyPass needs a path when not defined in a location";
+        else 
+            return "ProxyPass can not have a path when defined in a location";
+    }
+
+     return NULL;
+}
+
+static const char *
+    add_pass_reverse(cmd_parms *cmd, void *dummy, const char *f, const char *r)
+{
+    server_rec *s = cmd->server;
+    proxy_server_conf *conf;
+    struct proxy_alias *new;
+
+    conf = (proxy_server_conf *)ap_get_module_config(s->module_config, 
+                                                     &proxy_module);
+    if (r!=NULL && cmd->path == NULL ) {
+        new = apr_array_push(conf->raliases);
+        new->fake = f;
+        new->real = r;
+    } else if (r==NULL && cmd->path != NULL) {
+        new = apr_array_push(conf->raliases);
+        new->fake = cmd->path;
+        new->real = f;
+    } else {
+        if ( r == NULL)
+            return "ProxyPassReverse needs a path when not defined in a location";
+        else 
+            return "ProxyPassReverse can not have a path when defined in a location";
+    }
+
+    return NULL;
+}
+
+static const char *
+    set_proxy_exclude(cmd_parms *parms, void *dummy, const char *arg)
+{
+    server_rec *s = parms->server;
+    proxy_server_conf *conf =
+    ap_get_module_config(s->module_config, &proxy_module);
+    struct noproxy_entry *new;
+    struct noproxy_entry *list = (struct noproxy_entry *) conf->noproxies->elts;
+    struct apr_sockaddr_t *addr;
+    int found = 0;
+    int i;
+
+    /* Don't duplicate entries */
+    for (i = 0; i < conf->noproxies->nelts; i++) {
+        if (apr_strnatcasecmp(arg, list[i].name) == 0) { /* ignore case for host names */
+            found = 1;
+        }
+    }
+
+    if (!found) {
+        new = apr_array_push(conf->noproxies);
+        new->name = arg;
+        if (APR_SUCCESS == apr_sockaddr_info_get(&addr, new->name, APR_UNSPEC, 0, 0, parms->pool)) {
+            new->addr = addr;
+        }
+        else {
+            new->addr = NULL;
+        }
+    }
+    return NULL;
+}
+
+/*
+ * Set the ports CONNECT can use
+ */
+static const char *
+    set_allowed_ports(cmd_parms *parms, void *dummy, const char *arg)
+{
+    server_rec *s = parms->server;
+    proxy_server_conf *conf =
+        ap_get_module_config(s->module_config, &proxy_module);
+    int *New;
+
+    if (!apr_isdigit(arg[0]))
+        return "AllowCONNECT: port number must be numeric";
+
+    New = apr_array_push(conf->allowed_connect_ports);
+    *New = atoi(arg);
+    return NULL;
+}
+
+/* Similar to set_proxy_exclude(), but defining directly connected hosts,
+ * which should never be accessed via the configured ProxyRemote servers
+ */
+static const char *
+    set_proxy_dirconn(cmd_parms *parms, void *dummy, const char *arg)
+{
+    server_rec *s = parms->server;
+    proxy_server_conf *conf =
+    ap_get_module_config(s->module_config, &proxy_module);
+    struct dirconn_entry *New;
+    struct dirconn_entry *list = (struct dirconn_entry *) conf->dirconn->elts;
+    int found = 0;
+    int i;
+
+    /* Don't duplicate entries */
+    for (i = 0; i < conf->dirconn->nelts; i++) {
+        if (strcasecmp(arg, list[i].name) == 0)
+            found = 1;
+    }
+
+    if (!found) {
+        New = apr_array_push(conf->dirconn);
+        New->name = apr_pstrdup(parms->pool, arg);
+        New->hostaddr = NULL;
+
+	if (ap_proxy_is_ipaddr(New, parms->pool)) {
+#if DEBUGGING
+            ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                         "Parsed addr %s", inet_ntoa(New->addr));
+            ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                         "Parsed mask %s", inet_ntoa(New->mask));
+#endif
+	}
+	else if (ap_proxy_is_domainname(New, parms->pool)) {
+            ap_str_tolower(New->name);
+#if DEBUGGING
+            ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                         "Parsed domain %s", New->name);
+#endif
+        }
+        else if (ap_proxy_is_hostname(New, parms->pool)) {
+            ap_str_tolower(New->name);
+#if DEBUGGING
+            ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                         "Parsed host %s", New->name);
+#endif
+        }
+        else {
+            ap_proxy_is_word(New, parms->pool);
+#if DEBUGGING
+            fprintf(stderr, "Parsed word %s\n", New->name);
+#endif
+        }
+    }
+    return NULL;
+}
+
+static const char *
+    set_proxy_domain(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    if (arg[0] != '.')
+        return "ProxyDomain: domain name must start with a dot.";
+
+    psf->domain = arg;
+    return NULL;
+}
+
+static const char *
+    set_proxy_req(cmd_parms *parms, void *dummy, int flag)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    psf->req = flag;
+    psf->req_set = 1;
+    return NULL;
+}
+static const char *
+    set_proxy_error_override(cmd_parms *parms, void *dummy, int flag)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    psf->error_override = flag;
+    psf->error_override_set = 1;
+    return NULL;
+}
+static const char *
+    set_preserve_host(cmd_parms *parms, void *dummy, int flag)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    psf->preserve_host = flag;
+    psf->preserve_host_set = 1;
+    return NULL;
+}
+
+static const char *
+    set_recv_buffer_size(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+    int s = atoi(arg);
+    if (s < 512 && s != 0) {
+        return "ProxyReceiveBufferSize must be >= 512 bytes, or 0 for system default.";
+    }
+
+    psf->recv_buffer_size = s;
+    psf->recv_buffer_size_set = 1;
+    return NULL;
+}
+
+static const char *
+    set_io_buffer_size(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+    long s = atol(arg);
+
+    psf->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE);
+    psf->io_buffer_size_set = 1;
+    return NULL;
+}
+
+static const char *
+    set_max_forwards(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+    long s = atol(arg);
+    if (s < 0) {
+        return "ProxyMaxForwards must be greater or equal to zero..";
+    }
+
+    psf->maxfwd = s;
+    psf->maxfwd_set = 1;
+    return NULL;
+}
+static const char*
+    set_proxy_timeout(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+    int timeout;
+
+    timeout=atoi(arg);
+    if (timeout<1) {
+        return "Proxy Timeout must be at least 1 second.";
+    }
+    psf->timeout_set=1;
+    psf->timeout=apr_time_from_sec(timeout);
+
+    return NULL;    
+}
+
+static const char*
+    set_via_opt(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    if (strcasecmp(arg, "Off") == 0)
+        psf->viaopt = via_off;
+    else if (strcasecmp(arg, "On") == 0)
+        psf->viaopt = via_on;
+    else if (strcasecmp(arg, "Block") == 0)
+        psf->viaopt = via_block;
+    else if (strcasecmp(arg, "Full") == 0)
+        psf->viaopt = via_full;
+    else {
+        return "ProxyVia must be one of: "
+            "off | on | full | block";
+    }
+
+    psf->viaopt_set = 1;
+    return NULL;    
+}
+
+static const char*
+    set_bad_opt(cmd_parms *parms, void *dummy, const char *arg)
+{
+    proxy_server_conf *psf =
+    ap_get_module_config(parms->server->module_config, &proxy_module);
+
+    if (strcasecmp(arg, "IsError") == 0)
+        psf->badopt = bad_error;
+    else if (strcasecmp(arg, "Ignore") == 0)
+        psf->badopt = bad_ignore;
+    else if (strcasecmp(arg, "StartBody") == 0)
+        psf->badopt = bad_body;
+    else {
+        return "ProxyBadHeader must be one of: "
+            "IsError | Ignore | StartBody";
+    }
+
+    psf->badopt_set = 1;
+    return NULL;    
+}
+
+static const char* set_ftp_directory_charset(cmd_parms *cmd, void *dconf,
+                                             const char *arg)
+{
+    proxy_dir_conf *conf = dconf;
+
+    conf->ftp_directory_charset = arg;
+    return NULL;
+}
+
+static void ap_add_per_proxy_conf(server_rec *s, ap_conf_vector_t *dir_config)
+{
+    proxy_server_conf *sconf = ap_get_module_config(s->module_config,
+					            &proxy_module);
+    void **new_space = (void **)apr_array_push(sconf->sec_proxy);
+    
+    *new_space = dir_config;
+}
+
+static const char *proxysection(cmd_parms *cmd, void *mconfig, const char *arg)
+{
+    const char *errmsg;
+    const char *endp = ap_strrchr_c(arg, '>');
+    int old_overrides = cmd->override;
+    char *old_path = cmd->path;
+    proxy_dir_conf *conf;
+    ap_conf_vector_t *new_dir_conf = ap_create_per_dir_config(cmd->pool);
+    regex_t *r = NULL;
+    const command_rec *thiscmd = cmd->cmd;
+
+    const char *err = ap_check_cmd_context(cmd,
+                                           NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
+    if (err != NULL) {
+        return err;
+    }
+
+    if (endp == NULL) {
+        return apr_pstrcat(cmd->pool, cmd->cmd->name,
+                           "> directive missing closing '>'", NULL);
+    }
+
+    arg=apr_pstrndup(cmd->pool, arg, endp-arg);
+
+    if (!arg) {
+        if (thiscmd->cmd_data)
+            return "<ProxyMatch > block must specify a path";
+        else
+            return "<Proxy > block must specify a path";
+    }
+
+    cmd->path = ap_getword_conf(cmd->pool, &arg);
+    cmd->override = OR_ALL|ACCESS_CONF;
+
+    if (!strncasecmp(cmd->path, "proxy:", 6))
+        cmd->path += 6;
+
+    /* XXX Ignore case?  What if we proxy a case-insensitive server?!? 
+     * While we are at it, shouldn't we also canonicalize the entire
+     * scheme?  See proxy_fixup()
+     */
+    if (thiscmd->cmd_data) { /* <ProxyMatch> */
+        r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED);
+        if (!r) {
+            return "Regex could not be compiled";
+        }
+    }
+    else if (!strcmp(cmd->path, "~")) {
+        cmd->path = ap_getword_conf(cmd->pool, &arg);
+        if (!cmd->path)
+            return "<Proxy ~ > block must specify a path";
+        if (strncasecmp(cmd->path, "proxy:", 6))
+            cmd->path += 6;
+        r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED);
+        if (!r) {
+            return "Regex could not be compiled";
+        }
+    }
+
+    /* initialize our config and fetch it */
+    conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path,
+                                 &proxy_module, cmd->pool);
+
+    errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf);
+    if (errmsg != NULL)
+        return errmsg;
+
+    conf->r = r;
+    conf->p = cmd->path;
+    conf->p_is_fnmatch = apr_fnmatch_test(conf->p);
+
+    ap_add_per_proxy_conf(cmd->server, new_dir_conf);
+
+    if (*arg != '\0') {
+        return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
+                           "> arguments not (yet) supported.", NULL);
+    }
+
+    cmd->path = old_path;
+    cmd->override = old_overrides;
+
+    return NULL;
+}
+
+static const command_rec proxy_cmds[] =
+{
+    AP_INIT_RAW_ARGS("<Proxy", proxysection, NULL, RSRC_CONF, 
+    "Container for directives affecting resources located in the proxied "
+    "location"),
+    AP_INIT_RAW_ARGS("<ProxyMatch", proxysection, (void*)1, RSRC_CONF,
+    "Container for directives affecting resources located in the proxied "
+    "location, in regular expression syntax"),
+    AP_INIT_FLAG("ProxyRequests", set_proxy_req, NULL, RSRC_CONF,
+     "on if the true proxy requests should be accepted"),
+    AP_INIT_TAKE2("ProxyRemote", add_proxy_noregex, NULL, RSRC_CONF,
+     "a scheme, partial URL or '*' and a proxy server"),
+    AP_INIT_TAKE2("ProxyRemoteMatch", add_proxy_regex, NULL, RSRC_CONF,
+     "a regex pattern and a proxy server"),
+    AP_INIT_TAKE12("ProxyPass", add_pass, NULL, RSRC_CONF|ACCESS_CONF,
+     "a virtual path and a URL"),
+    AP_INIT_TAKE12("ProxyPassReverse", add_pass_reverse, NULL, RSRC_CONF|ACCESS_CONF,
+     "a virtual path and a URL for reverse proxy behaviour"),
+    AP_INIT_ITERATE("ProxyBlock", set_proxy_exclude, NULL, RSRC_CONF,
+     "A list of names, hosts or domains to which the proxy will not connect"),
+    AP_INIT_TAKE1("ProxyReceiveBufferSize", set_recv_buffer_size, NULL, RSRC_CONF,
+     "Receive buffer size for outgoing HTTP and FTP connections in bytes"),
+    AP_INIT_TAKE1("ProxyIOBufferSize", set_io_buffer_size, NULL, RSRC_CONF,
+     "IO buffer size for outgoing HTTP and FTP connections in bytes"),
+    AP_INIT_TAKE1("ProxyMaxForwards", set_max_forwards, NULL, RSRC_CONF,
+     "The maximum number of proxies a request may be forwarded through."),
+    AP_INIT_ITERATE("NoProxy", set_proxy_dirconn, NULL, RSRC_CONF,
+     "A list of domains, hosts, or subnets to which the proxy will connect directly"),
+    AP_INIT_TAKE1("ProxyDomain", set_proxy_domain, NULL, RSRC_CONF,
+     "The default intranet domain name (in absence of a domain in the URL)"),
+    AP_INIT_ITERATE("AllowCONNECT", set_allowed_ports, NULL, RSRC_CONF,
+     "A list of ports which CONNECT may connect to"),
+    AP_INIT_TAKE1("ProxyVia", set_via_opt, NULL, RSRC_CONF,
+     "Configure Via: proxy header header to one of: on | off | block | full"),
+    AP_INIT_FLAG("ProxyErrorOverride", set_proxy_error_override, NULL, RSRC_CONF,
+     "use our error handling pages instead of the servers' we are proxying"),
+    AP_INIT_FLAG("ProxyPreserveHost", set_preserve_host, NULL, RSRC_CONF,
+     "on if we should preserve host header while proxying"),
+    AP_INIT_TAKE1("ProxyTimeout", set_proxy_timeout, NULL, RSRC_CONF,
+     "Set the timeout (in seconds) for a proxied connection. "
+     "This overrides the server timeout"),
+    AP_INIT_TAKE1("ProxyBadHeader", set_bad_opt, NULL, RSRC_CONF,
+     "How to handle bad header line in response: IsError | Ignore | StartBody"),
+    AP_INIT_TAKE1("ProxyFtpDirCharset", set_ftp_directory_charset, NULL,
+    RSRC_CONF|ACCESS_CONF, "Define the character set for proxied FTP listings"),
+    {NULL}
+};
+
+APR_DECLARE_OPTIONAL_FN(int, ssl_proxy_enable, (conn_rec *));
+APR_DECLARE_OPTIONAL_FN(int, ssl_engine_disable, (conn_rec *));
+
+static APR_OPTIONAL_FN_TYPE(ssl_proxy_enable) *proxy_ssl_enable = NULL;
+static APR_OPTIONAL_FN_TYPE(ssl_engine_disable) *proxy_ssl_disable = NULL;
+
+PROXY_DECLARE(int) ap_proxy_ssl_enable(conn_rec *c)
+{
+    /* 
+     * if c == NULL just check if the optional function was imported
+     * else run the optional function so ssl filters are inserted
+     */
+    if (proxy_ssl_enable) {
+        return c ? proxy_ssl_enable(c) : 1;
+    }
+
+    return 0;
+}
+
+PROXY_DECLARE(int) ap_proxy_ssl_disable(conn_rec *c)
+{
+    if (proxy_ssl_disable) {
+        return proxy_ssl_disable(c);
+    }
+
+    return 0;
+}
+
+static int proxy_post_config(apr_pool_t *pconf, apr_pool_t *plog,
+                             apr_pool_t *ptemp, server_rec *s)
+{
+    proxy_ssl_enable = APR_RETRIEVE_OPTIONAL_FN(ssl_proxy_enable);
+    proxy_ssl_disable = APR_RETRIEVE_OPTIONAL_FN(ssl_engine_disable);
+
+    return OK;
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+    /* fixup before mod_rewrite, so that the proxied url will not
+     * escaped accidentally by our fixup.
+     */
+    static const char * const aszSucc[]={ "mod_rewrite.c", NULL };
+
+    /* handler */
+    ap_hook_handler(proxy_handler, NULL, NULL, APR_HOOK_FIRST);
+    /* filename-to-URI translation */
+    ap_hook_translate_name(proxy_trans, NULL, NULL, APR_HOOK_FIRST);
+    /* walk <Proxy > entries and suppress default TRACE behavior */
+    ap_hook_map_to_storage(proxy_map_location, NULL,NULL, APR_HOOK_FIRST);
+    /* fixups */
+    ap_hook_fixups(proxy_fixup, NULL, aszSucc, APR_HOOK_FIRST);
+    /* post read_request handling */
+    ap_hook_post_read_request(proxy_detect, NULL, NULL, APR_HOOK_FIRST);
+    /* post config handling */
+    ap_hook_post_config(proxy_post_config, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+module AP_MODULE_DECLARE_DATA proxy_module =
+{
+    STANDARD20_MODULE_STUFF,
+    create_proxy_dir_config,    /* create per-directory config structure */
+    merge_proxy_dir_config,     /* merge per-directory config structures */
+    create_proxy_config,	/* create per-server config structure */
+    merge_proxy_config,		/* merge per-server config structures */
+    proxy_cmds,			/* command table */
+    register_hooks
+};
+
+APR_HOOK_STRUCT(
+	APR_HOOK_LINK(scheme_handler)
+	APR_HOOK_LINK(canon_handler)
+)
+
+APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, scheme_handler, 
+                                     (request_rec *r, proxy_server_conf *conf, 
+                                     char *url, const char *proxyhost, 
+                                     apr_port_t proxyport),(r,conf,url,
+                                     proxyhost,proxyport),DECLINED)
+APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, canon_handler, 
+                                     (request_rec *r, char *url),(r,
+                                     url),DECLINED)
+APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, fixups,
+				    (request_rec *r), (r),
+				    OK, DECLINED)