* 20121222.3 (2.5.0-dev) Add ppinherit to proxy_server_conf
* 20121222.4 (2.5.0-dev) Add uds_path to proxy_conn_rec
* 20121222.5 (2.5.0-dev) Add "r" and "must_rebind" to util_ldap_connection_t
+ * 20121222.6 (2.5.0-dev) Add ap_proxy_create_hdrbrgd() and
+ * ap_proxy_pass_brigade()
*/
#define MODULE_MAGIC_COOKIE 0x41503235UL /* "AP25" */
struct proxy_alias *ent,
proxy_dir_conf *dconf);
+/**
+ * Create a HTTP request header brigade, old_cl_val and old_te_val as required.
+ * @parama p pool
+ * @param header_brigade header brigade to use/fill
+ * @param r request
+ * @param p_conn proxy connection rec
+ * @param worker selected worker
+ * @param conf per-server proxy config
+ * @param uri uri
+ * @param url url
+ * @param server_portstr port as string
+ * @param old_cl_val stored old content-len val
+ * @param old_te_val stored old TE val
+ * @return OK or HTTP_EXPECTATION_FAILED
+ */
+PROXY_DECLARE(int) ap_proxy_create_hdrbrgd(apr_pool_t *p,
+ apr_bucket_brigade *header_brigade,
+ request_rec *r,
+ proxy_conn_rec *p_conn,
+ proxy_worker *worker,
+ proxy_server_conf *conf,
+ apr_uri_t *uri,
+ char *url, char *server_portstr,
+ char **old_cl_val,
+ char **old_te_val);
+
+/**
+ * @param bucket_alloc bucket allocator
+ * @param r request
+ * @param p_conn proxy connection
+ * @param origin connection rec of origin
+ * @param bb brigade to send to origin
+ * @param flush flush
+ * @return status (OK)
+ */
+PROXY_DECLARE(int) ap_proxy_pass_brigade(apr_bucket_alloc_t *bucket_alloc,
+ request_rec *r, proxy_conn_rec *p_conn,
+ conn_rec *origin, apr_bucket_brigade *bb,
+ int flush);
+
#define PROXY_LBMETHOD "proxylbmethod"
/* The number of dynamic workers that can be added when reconfiguring.
APR_BRIGADE_INSERT_TAIL(header_brigade, e);
}
-static int pass_brigade(apr_bucket_alloc_t *bucket_alloc,
- request_rec *r, proxy_conn_rec *p_conn,
- conn_rec *origin, apr_bucket_brigade *bb,
- int flush)
-{
- apr_status_t status;
- apr_off_t transferred;
-
- if (flush) {
- apr_bucket *e = apr_bucket_flush_create(bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, e);
- }
- apr_brigade_length(bb, 0, &transferred);
- if (transferred != -1)
- p_conn->worker->s->transferred += transferred;
- status = ap_pass_brigade(origin->output_filters, bb);
- if (status != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(01084)
- "pass request body failed to %pI (%s)",
- p_conn->addr, p_conn->hostname);
- if (origin->aborted) {
- const char *ssl_note;
-
- if (((ssl_note = apr_table_get(origin->notes, "SSL_connect_rv"))
- != NULL) && (strcmp(ssl_note, "err") == 0)) {
- return ap_proxyerror(r, HTTP_INTERNAL_SERVER_ERROR,
- "Error during SSL Handshake with"
- " remote server");
- }
- return APR_STATUS_IS_TIMEUP(status) ? HTTP_GATEWAY_TIME_OUT : HTTP_BAD_GATEWAY;
- }
- else {
- return HTTP_BAD_REQUEST;
- }
- }
- apr_brigade_cleanup(bb);
- return OK;
-}
#define MAX_MEM_SPOOL 16384
}
/* The request is flushed below this loop with chunk EOS header */
- rv = pass_brigade(bucket_alloc, r, p_conn, origin, bb, 0);
+ rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, origin, bb, 0);
if (rv != OK) {
return rv;
}
}
/* Now we have headers-only, or the chunk EOS mark; flush it */
- rv = pass_brigade(bucket_alloc, r, p_conn, origin, bb, 1);
+ rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, origin, bb, 1);
return rv;
}
conn_rec *origin,
apr_bucket_brigade *header_brigade,
apr_bucket_brigade *input_brigade,
- const char *old_cl_val)
+ char *old_cl_val)
{
int seen_eos = 0, rv = 0;
apr_status_t status = APR_SUCCESS;
}
/* Once we hit EOS, we are ready to flush. */
- rv = pass_brigade(bucket_alloc, r, p_conn, origin, bb, seen_eos);
+ rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, origin, bb, seen_eos);
if (rv != OK) {
return rv ;
}
* body; send it now with the flush flag
*/
bb = header_brigade;
- return(pass_brigade(bucket_alloc, r, p_conn, origin, bb, 1));
+ return(ap_proxy_pass_brigade(bucket_alloc, r, p_conn, origin, bb, 1));
}
return OK;
APR_BRIGADE_INSERT_TAIL(header_brigade, e);
}
/* This is all a single brigade, pass with flush flagged */
- return(pass_brigade(bucket_alloc, r, p_conn, origin, header_brigade, 1));
+ return(ap_proxy_pass_brigade(bucket_alloc, r, p_conn, origin, header_brigade, 1));
}
/*
apr_bucket_brigade *temp_brigade;
apr_bucket *e;
char *buf;
- const apr_array_header_t *headers_in_array;
- const apr_table_entry_t *headers_in;
- int counter;
apr_status_t status;
enum rb_methods {RB_INIT, RB_STREAM_CL, RB_STREAM_CHUNKED, RB_SPOOL_CL};
enum rb_methods rb_method = RB_INIT;
- const char *old_cl_val = NULL;
- const char *old_te_val = NULL;
+ char *old_cl_val = NULL;
+ char *old_te_val = NULL;
apr_off_t bytes_read = 0;
apr_off_t bytes;
int force10, rv;
- apr_table_t *headers_in_copy;
proxy_dir_conf *dconf;
conn_rec *origin = p_conn->connection;
- int do_100_continue;
dconf = ap_get_module_config(r->per_dir_config, &proxy_module);
- header_brigade = apr_brigade_create(p, origin->bucket_alloc);
-
- /*
- * Send the HTTP/1.1 request to the remote server
- */
-
- /*
- * To be compliant, we only use 100-Continue for requests with bodies.
- * We also make sure we won't be talking HTTP/1.0 as well.
- */
- do_100_continue = (worker->s->ping_timeout_set
- && ap_request_has_body(r)
- && (PROXYREQ_REVERSE == r->proxyreq)
- && !(apr_table_get(r->subprocess_env, "force-proxy-request-1.0")));
if (apr_table_get(r->subprocess_env, "force-proxy-request-1.0")) {
- /*
- * According to RFC 2616 8.2.3 we are not allowed to forward an
- * Expect: 100-continue to an HTTP/1.0 server. Instead we MUST return
- * a HTTP_EXPECTATION_FAILED
- */
if (r->expecting_100) {
return HTTP_EXPECTATION_FAILED;
}
- buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.0" CRLF, NULL);
force10 = 1;
- p_conn->close = 1;
} else {
- buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.1" CRLF, NULL);
force10 = 0;
}
- if (apr_table_get(r->subprocess_env, "proxy-nokeepalive")) {
- origin->keepalive = AP_CONN_CLOSE;
- p_conn->close = 1;
- }
- ap_xlate_proto_to_ascii(buf, strlen(buf));
- e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(header_brigade, e);
- if (dconf->preserve_host == 0) {
- if (ap_strchr_c(uri->hostname, ':')) { /* if literal IPv6 address */
- if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
- buf = apr_pstrcat(p, "Host: [", uri->hostname, "]:",
- uri->port_str, CRLF, NULL);
- } else {
- buf = apr_pstrcat(p, "Host: [", uri->hostname, "]", CRLF, NULL);
- }
- } else {
- if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
- buf = apr_pstrcat(p, "Host: ", uri->hostname, ":",
- uri->port_str, CRLF, NULL);
- } else {
- buf = apr_pstrcat(p, "Host: ", uri->hostname, CRLF, NULL);
- }
- }
- }
- else {
- /* don't want to use r->hostname, as the incoming header might have a
- * port attached
- */
- const char* hostname = apr_table_get(r->headers_in,"Host");
- if (!hostname) {
- hostname = r->server->server_hostname;
- ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01092)
- "no HTTP 0.9 request (with no host line) "
- "on incoming request and preserve host set "
- "forcing hostname to be %s for uri %s",
- hostname, r->uri);
- }
- buf = apr_pstrcat(p, "Host: ", hostname, CRLF, NULL);
- }
- ap_xlate_proto_to_ascii(buf, strlen(buf));
- e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(header_brigade, e);
-
- /* handle Via */
- if (conf->viaopt == via_block) {
- /* Block all outgoing Via: headers */
- apr_table_unset(r->headers_in, "Via");
- } else if (conf->viaopt != via_off) {
- const char *server_name = ap_get_server_name(r);
- /* If USE_CANONICAL_NAME_OFF was configured for the proxy virtual host,
- * then the server name returned by ap_get_server_name() is the
- * origin server name (which does make too much sense with Via: headers)
- * so we use the proxy vhost's name instead.
- */
- if (server_name == r->hostname)
- server_name = r->server->server_hostname;
- /* Create a "Via:" request header entry and merge it */
- /* Generate outgoing Via: header with/without server comment: */
- apr_table_mergen(r->headers_in, "Via",
- (conf->viaopt == via_full)
- ? apr_psprintf(p, "%d.%d %s%s (%s)",
- HTTP_VERSION_MAJOR(r->proto_num),
- HTTP_VERSION_MINOR(r->proto_num),
- server_name, server_portstr,
- AP_SERVER_BASEVERSION)
- : apr_psprintf(p, "%d.%d %s%s",
- HTTP_VERSION_MAJOR(r->proto_num),
- HTTP_VERSION_MINOR(r->proto_num),
- server_name, server_portstr)
- );
- }
-
- /* Use HTTP/1.1 100-Continue as quick "HTTP ping" test
- * to backend
- */
- if (do_100_continue) {
- apr_table_mergen(r->headers_in, "Expect", "100-Continue");
- r->expecting_100 = 1;
- }
- /* X-Forwarded-*: handling
- *
- * XXX Privacy Note:
- * -----------------
- *
- * These request headers are only really useful when the mod_proxy
- * is used in a reverse proxy configuration, so that useful info
- * about the client can be passed through the reverse proxy and on
- * to the backend server, which may require the information to
- * function properly.
- *
- * In a forward proxy situation, these options are a potential
- * privacy violation, as information about clients behind the proxy
- * are revealed to arbitrary servers out there on the internet.
- *
- * The HTTP/1.1 Via: header is designed for passing client
- * information through proxies to a server, and should be used in
- * a forward proxy configuation instead of X-Forwarded-*. See the
- * ProxyVia option for details.
- */
- if (dconf->add_forwarded_headers) {
- if (PROXYREQ_REVERSE == r->proxyreq) {
- const char *buf;
-
- /* Add X-Forwarded-For: so that the upstream has a chance to
- * determine, where the original request came from.
- */
- apr_table_mergen(r->headers_in, "X-Forwarded-For",
- r->useragent_ip);
-
- /* Add X-Forwarded-Host: so that upstream knows what the
- * original request hostname was.
- */
- if ((buf = apr_table_get(r->headers_in, "Host"))) {
- apr_table_mergen(r->headers_in, "X-Forwarded-Host", buf);
- }
-
- /* Add X-Forwarded-Server: so that upstream knows what the
- * name of this proxy server is (if there are more than one)
- * XXX: This duplicates Via: - do we strictly need it?
- */
- apr_table_mergen(r->headers_in, "X-Forwarded-Server",
- r->server->server_hostname);
- }
- }
-
- proxy_run_fixups(r);
- /*
- * Make a copy of the headers_in table before clearing the connection
- * headers as we need the connection headers later in the http output
- * filter to prepare the correct response headers.
- *
- * Note: We need to take r->pool for apr_table_copy as the key / value
- * pairs in r->headers_in have been created out of r->pool and
- * p might be (and actually is) a longer living pool.
- * This would trigger the bad pool ancestry abort in apr_table_copy if
- * apr is compiled with APR_POOL_DEBUG.
- */
- headers_in_copy = apr_table_copy(r->pool, r->headers_in);
- ap_proxy_clear_connection(p, headers_in_copy);
- /* send request headers */
- headers_in_array = apr_table_elts(headers_in_copy);
- headers_in = (const apr_table_entry_t *) headers_in_array->elts;
- for (counter = 0; counter < headers_in_array->nelts; counter++) {
- if (headers_in[counter].key == NULL
- || headers_in[counter].val == NULL
-
- /* Already sent */
- || !strcasecmp(headers_in[counter].key, "Host")
-
- /* Clear out hop-by-hop request headers not to send
- * RFC2616 13.5.1 says we should strip these headers
- */
- || !strcasecmp(headers_in[counter].key, "Keep-Alive")
- || !strcasecmp(headers_in[counter].key, "TE")
- || !strcasecmp(headers_in[counter].key, "Trailer")
- || !strcasecmp(headers_in[counter].key, "Upgrade")
-
- ) {
- continue;
- }
- /* Do we want to strip Proxy-Authorization ?
- * If we haven't used it, then NO
- * If we have used it then MAYBE: RFC2616 says we MAY propagate it.
- * So let's make it configurable by env.
- */
- if (!strcasecmp(headers_in[counter].key,"Proxy-Authorization")) {
- if (r->user != NULL) { /* we've authenticated */
- if (!apr_table_get(r->subprocess_env, "Proxy-Chain-Auth")) {
- continue;
- }
- }
- }
-
-
- /* Skip Transfer-Encoding and Content-Length for now.
- */
- if (!strcasecmp(headers_in[counter].key, "Transfer-Encoding")) {
- old_te_val = headers_in[counter].val;
- continue;
- }
- if (!strcasecmp(headers_in[counter].key, "Content-Length")) {
- old_cl_val = headers_in[counter].val;
- continue;
- }
-
- /* for sub-requests, ignore freshness/expiry headers */
- if (r->main) {
- if ( !strcasecmp(headers_in[counter].key, "If-Match")
- || !strcasecmp(headers_in[counter].key, "If-Modified-Since")
- || !strcasecmp(headers_in[counter].key, "If-Range")
- || !strcasecmp(headers_in[counter].key, "If-Unmodified-Since")
- || !strcasecmp(headers_in[counter].key, "If-None-Match")) {
- continue;
- }
- }
-
- buf = apr_pstrcat(p, headers_in[counter].key, ": ",
- headers_in[counter].val, CRLF,
- NULL);
- ap_xlate_proto_to_ascii(buf, strlen(buf));
- e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(header_brigade, e);
+ header_brigade = apr_brigade_create(p, origin->bucket_alloc);
+ rv = ap_proxy_create_hdrbrgd(p, header_brigade, r, p_conn,
+ worker, conf, uri, url, server_portstr,
+ &old_cl_val, &old_te_val);
+ if (rv != OK) {
+ return rv;
}
/* We have headers, let's figure out our request body... */
return rv;
}
-static int sendall(proxy_conn_rec *conn, const char *buf, apr_size_t length,
- request_rec *r)
-{
- apr_status_t rv;
- apr_size_t written;
-
- while (length > 0) {
- written = length;
- if ((rv = apr_socket_send(conn->sock, buf, &written)) != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO()
- "sending data to %s:%u failed",
- conn->hostname, conn->port);
- return HTTP_SERVICE_UNAVAILABLE;
- }
-
- /* count for stats */
- conn->worker->s->transferred += written;
- buf += written;
- length -= written;
- }
-
- return OK;
-}
-
-/* Clear all connection-based headers from the incoming headers table */
-typedef struct header_dptr {
- apr_pool_t *pool;
- apr_table_t *table;
- apr_time_t time;
-} header_dptr;
-
-static int clear_conn_headers(void *data, const char *key, const char *val)
-{
- apr_table_t *headers = ((header_dptr*)data)->table;
- apr_pool_t *pool = ((header_dptr*)data)->pool;
- const char *name;
- char *next = apr_pstrdup(pool, val);
- while (*next) {
- name = next;
- while (*next && !apr_isspace(*next) && (*next != ',')) {
- ++next;
- }
- while (*next && (apr_isspace(*next) || (*next == ','))) {
- *next++ = '\0';
- }
- apr_table_unset(headers, name);
- }
- return 1;
-}
-
-static void ap_proxy_clear_connection(apr_pool_t *p, apr_table_t *headers)
-{
- header_dptr x;
- x.pool = p;
- x.table = headers;
- apr_table_unset(headers, "Proxy-Connection");
- apr_table_do(clear_conn_headers, &x, headers, "Connection", NULL);
- apr_table_unset(headers, "Connection");
-}
-
/*
* process the request and write the response.
*/
static int ap_proxy_websocket_request(apr_pool_t *p, request_rec *r,
proxy_conn_rec *conn,
- conn_rec *origin,
- proxy_dir_conf *conf,
+ proxy_worker *worker,
+ proxy_server_conf *conf,
apr_uri_t *uri,
char *url, char *server_portstr)
{
apr_socket_t *sock = conn->sock;
conn_rec *backconn = conn->connection;
int client_error = 0;
- int force10;
- int counter;
char *buf;
- void *sconf = r->server->module_config;
- proxy_server_conf *psc;
- const apr_array_header_t *headers_in_array;
- const apr_table_entry_t *headers_in;
- apr_table_t *headers_in_copy;
- const char *old_cl_val = NULL;
- const char *old_te_val = NULL;
apr_size_t blen;
+ apr_bucket_brigade *header_brigade;
+ apr_bucket *e;
+ char *old_cl_val = NULL;
+ char *old_te_val = NULL;
apr_bucket_brigade *bb = apr_brigade_create(p, c->bucket_alloc);
apr_socket_t *client_socket = ap_get_conn_socket(c);
- psc = (proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
+ header_brigade = apr_brigade_create(p, backconn->bucket_alloc);
+
ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "sending request");
- /*
- * pulled from mod_proxy_http... (maybe pull out to ap_get_header_brigade()?)
- */
- if (apr_table_get(r->subprocess_env, "force-proxy-request-1.0")) {
- /*
- * According to RFC 2616 8.2.3 we are not allowed to forward an
- * Expect: 100-continue to an HTTP/1.0 server. Instead we MUST return
- * a HTTP_EXPECTATION_FAILED
- */
- if (r->expecting_100) {
- return HTTP_EXPECTATION_FAILED;
- }
- buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.0" CRLF, NULL);
- force10 = 1;
- conn->close = 1;
- } else {
- buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.1" CRLF, NULL);
- force10 = 0;
- }
- if (apr_table_get(r->subprocess_env, "proxy-nokeepalive")) {
- origin->keepalive = AP_CONN_CLOSE;
- conn->close = 1;
- }
- blen = strlen(buf);
- ap_xlate_proto_to_ascii(buf, blen);
- if ((rv = sendall(conn, buf, blen, r)) != OK)
+ rv = ap_proxy_create_hdrbrgd(p, header_brigade, r, conn,
+ worker, conf, uri, url, server_portstr,
+ &old_cl_val, &old_te_val);
+ if (rv != OK) {
return rv;
- if (conf->preserve_host == 0) {
- if (ap_strchr_c(uri->hostname, ':')) { /* if literal IPv6 address */
- if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
- buf = apr_pstrcat(p, "Host: [", uri->hostname, "]:",
- uri->port_str, CRLF, NULL);
- } else {
- buf = apr_pstrcat(p, "Host: [", uri->hostname, "]", CRLF, NULL);
- }
- } else {
- if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
- buf = apr_pstrcat(p, "Host: ", uri->hostname, ":",
- uri->port_str, CRLF, NULL);
- } else {
- buf = apr_pstrcat(p, "Host: ", uri->hostname, CRLF, NULL);
- }
- }
}
- else {
- /* don't want to use r->hostname, as the incoming header might have a
- * port attached
- */
- const char* hostname = apr_table_get(r->headers_in,"Host");
- if (!hostname) {
- hostname = r->server->server_hostname;
- ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO()
- "no HTTP 0.9 request (with no host line) "
- "on incoming request and preserve host set "
- "forcing hostname to be %s for uri %s",
- hostname, r->uri);
- }
- buf = apr_pstrcat(p, "Host: ", hostname, CRLF, NULL);
- }
- blen = strlen(buf);
- ap_xlate_proto_to_ascii(buf, blen);
- if ((rv = sendall(conn, buf, blen, r)) != OK)
- return rv;
-
- /* handle Via */
- if (psc->viaopt == via_block) {
- /* Block all outgoing Via: headers */
- apr_table_unset(r->headers_in, "Via");
- } else if (psc->viaopt != via_off) {
- const char *server_name = ap_get_server_name(r);
- /* If USE_CANONICAL_NAME_OFF was configured for the proxy virtual host,
- * then the server name returned by ap_get_server_name() is the
- * origin server name (which does make too much sense with Via: headers)
- * so we use the proxy vhost's name instead.
- */
- if (server_name == r->hostname)
- server_name = r->server->server_hostname;
- /* Create a "Via:" request header entry and merge it */
- /* Generate outgoing Via: header with/without server comment: */
- apr_table_mergen(r->headers_in, "Via",
- (psc->viaopt == via_full)
- ? apr_psprintf(p, "%d.%d %s%s (%s)",
- HTTP_VERSION_MAJOR(r->proto_num),
- HTTP_VERSION_MINOR(r->proto_num),
- server_name, server_portstr,
- AP_SERVER_BASEVERSION)
- : apr_psprintf(p, "%d.%d %s%s",
- HTTP_VERSION_MAJOR(r->proto_num),
- HTTP_VERSION_MINOR(r->proto_num),
- server_name, server_portstr)
- );
- }
-
- if (conf->add_forwarded_headers) {
- if (PROXYREQ_REVERSE == r->proxyreq) {
- const char *buf;
-
- /* Add X-Forwarded-For: so that the upstream has a chance to
- * determine, where the original request came from.
- */
- apr_table_mergen(r->headers_in, "X-Forwarded-For",
- r->useragent_ip);
-
- /* Add X-Forwarded-Host: so that upstream knows what the
- * original request hostname was.
- */
- if ((buf = apr_table_get(r->headers_in, "Host"))) {
- apr_table_mergen(r->headers_in, "X-Forwarded-Host", buf);
- }
-
- /* Add X-Forwarded-Server: so that upstream knows what the
- * name of this proxy server is (if there are more than one)
- * XXX: This duplicates Via: - do we strictly need it?
- */
- apr_table_mergen(r->headers_in, "X-Forwarded-Server",
- r->server->server_hostname);
- }
- }
-
- proxy_run_fixups(r);
- /*
- * Make a copy of the headers_in table before clearing the connection
- * headers as we need the connection headers later in the http output
- * filter to prepare the correct response headers.
- *
- * Note: We need to take r->pool for apr_table_copy as the key / value
- * pairs in r->headers_in have been created out of r->pool and
- * p might be (and actually is) a longer living pool.
- * This would trigger the bad pool ancestry abort in apr_table_copy if
- * apr is compiled with APR_POOL_DEBUG.
- */
- headers_in_copy = apr_table_copy(r->pool, r->headers_in);
- ap_proxy_clear_connection(p, headers_in_copy);
- /* send request headers */
- headers_in_array = apr_table_elts(headers_in_copy);
- headers_in = (const apr_table_entry_t *) headers_in_array->elts;
- for (counter = 0; counter < headers_in_array->nelts; counter++) {
- if (headers_in[counter].key == NULL
- || headers_in[counter].val == NULL
-
- /* Already sent */
- || !strcasecmp(headers_in[counter].key, "Host")
-
- /* Clear out hop-by-hop request headers not to send
- * RFC2616 13.5.1 says we should strip these headers
- */
- || !strcasecmp(headers_in[counter].key, "Keep-Alive")
- || !strcasecmp(headers_in[counter].key, "TE")
- || !strcasecmp(headers_in[counter].key, "Trailer")
- || !strcasecmp(headers_in[counter].key, "Upgrade")
-
- ) {
- continue;
- }
- /* Do we want to strip Proxy-Authorization ?
- * If we haven't used it, then NO
- * If we have used it then MAYBE: RFC2616 says we MAY propagate it.
- * So let's make it configurable by env.
- */
- if (!strcasecmp(headers_in[counter].key,"Proxy-Authorization")) {
- if (r->user != NULL) { /* we've authenticated */
- if (!apr_table_get(r->subprocess_env, "Proxy-Chain-Auth")) {
- continue;
- }
- }
- }
-
- /* Skip Transfer-Encoding and Content-Length for now.
- */
- if (!strcasecmp(headers_in[counter].key, "Transfer-Encoding")) {
- old_te_val = headers_in[counter].val;
- continue;
- }
- if (!strcasecmp(headers_in[counter].key, "Content-Length")) {
- old_cl_val = headers_in[counter].val;
- continue;
- }
-
- /* for sub-requests, ignore freshness/expiry headers */
- if (r->main) {
- if ( !strcasecmp(headers_in[counter].key, "If-Match")
- || !strcasecmp(headers_in[counter].key, "If-Modified-Since")
- || !strcasecmp(headers_in[counter].key, "If-Range")
- || !strcasecmp(headers_in[counter].key, "If-Unmodified-Since")
- || !strcasecmp(headers_in[counter].key, "If-None-Match")) {
- continue;
- }
- }
-
- buf = apr_pstrcat(p, headers_in[counter].key, ": ",
- headers_in[counter].val, CRLF,
- NULL);
- blen = strlen(buf);
- ap_xlate_proto_to_ascii(buf, blen);
- if ((rv = sendall(conn, buf, blen, r)) != OK)
- return rv;
- }
-
buf = CRLF;
blen = strlen(buf);
- ap_xlate_proto_to_ascii(buf, blen);
- if ((rv = sendall(conn, buf, blen, r)) != OK)
+ ap_xlate_proto_to_ascii(buf, strlen(buf));
+ e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(header_brigade, e);
+
+ if ((rv = ap_proxy_pass_brigade(c->bucket_alloc, r, conn, backconn,
+ header_brigade, 1)) != OK)
return rv;
ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "setting up poll()");
return HTTP_INTERNAL_SERVER_ERROR;
}
+#if 0
apr_socket_opt_set(sock, APR_SO_NONBLOCK, 1);
apr_socket_opt_set(sock, APR_SO_KEEPALIVE, 1);
apr_socket_opt_set(client_socket, APR_SO_NONBLOCK, 1);
apr_socket_opt_set(client_socket, APR_SO_KEEPALIVE, 1);
+#endif
pollfd.p = p;
pollfd.desc_type = APR_POLL_SOCKET;
{
int status;
char server_portstr[32];
- conn_rec *origin = NULL;
proxy_conn_rec *backend = NULL;
char *scheme;
int retry;
conn_rec *c = r->connection;
- proxy_dir_conf *dconf = ap_get_module_config(r->per_dir_config,
- &proxy_module);
apr_pool_t *p = r->pool;
apr_uri_t *uri;
}
/* Step Three: Process the Request */
- status = ap_proxy_websocket_request(p, r, backend, origin, dconf, uri, locurl,
+ status = ap_proxy_websocket_request(p, r, backend, worker, conf, uri, locurl,
server_portstr);
break;
}
{
APR_REGISTER_OPTIONAL_FN(ap_proxy_retry_worker);
}
+
+/* Clear all connection-based headers from the incoming headers table */
+typedef struct header_dptr {
+ apr_pool_t *pool;
+ apr_table_t *table;
+ apr_time_t time;
+} header_dptr;
+
+static int clear_conn_headers(void *data, const char *key, const char *val)
+{
+ apr_table_t *headers = ((header_dptr*)data)->table;
+ apr_pool_t *pool = ((header_dptr*)data)->pool;
+ const char *name;
+ char *next = apr_pstrdup(pool, val);
+ while (*next) {
+ name = next;
+ while (*next && !apr_isspace(*next) && (*next != ',')) {
+ ++next;
+ }
+ while (*next && (apr_isspace(*next) || (*next == ','))) {
+ *next++ = '\0';
+ }
+ apr_table_unset(headers, name);
+ }
+ return 1;
+}
+
+static void proxy_clear_connection(apr_pool_t *p, apr_table_t *headers)
+{
+ header_dptr x;
+ x.pool = p;
+ x.table = headers;
+ apr_table_unset(headers, "Proxy-Connection");
+ apr_table_do(clear_conn_headers, &x, headers, "Connection", NULL);
+ apr_table_unset(headers, "Connection");
+}
+
+PROXY_DECLARE(int) ap_proxy_create_hdrbrgd(apr_pool_t *p,
+ apr_bucket_brigade *header_brigade,
+ request_rec *r,
+ proxy_conn_rec *p_conn,
+ proxy_worker *worker,
+ proxy_server_conf *conf,
+ apr_uri_t *uri,
+ char *url, char *server_portstr,
+ char **old_cl_val,
+ char **old_te_val)
+{
+ conn_rec *c = r->connection;
+ int counter;
+ char *buf;
+ const apr_array_header_t *headers_in_array;
+ const apr_table_entry_t *headers_in;
+ apr_table_t *headers_in_copy;
+ apr_bucket *e;
+ int do_100_continue;
+ conn_rec *origin = p_conn->connection;
+ proxy_dir_conf *dconf = ap_get_module_config(r->per_dir_config, &proxy_module);
+
+ /*
+ * To be compliant, we only use 100-Continue for requests with bodies.
+ * We also make sure we won't be talking HTTP/1.0 as well.
+ */
+ do_100_continue = (worker->s->ping_timeout_set
+ && ap_request_has_body(r)
+ && (PROXYREQ_REVERSE == r->proxyreq)
+ && !(apr_table_get(r->subprocess_env, "force-proxy-request-1.0")));
+
+ if (apr_table_get(r->subprocess_env, "force-proxy-request-1.0")) {
+ /*
+ * According to RFC 2616 8.2.3 we are not allowed to forward an
+ * Expect: 100-continue to an HTTP/1.0 server. Instead we MUST return
+ * a HTTP_EXPECTATION_FAILED
+ */
+ if (r->expecting_100) {
+ return HTTP_EXPECTATION_FAILED;
+ }
+ buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.0" CRLF, NULL);
+ p_conn->close = 1;
+ } else {
+ buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.1" CRLF, NULL);
+ }
+ if (apr_table_get(r->subprocess_env, "proxy-nokeepalive")) {
+ origin->keepalive = AP_CONN_CLOSE;
+ p_conn->close = 1;
+ }
+ ap_xlate_proto_to_ascii(buf, strlen(buf));
+ e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(header_brigade, e);
+ if (dconf->preserve_host == 0) {
+ if (ap_strchr_c(uri->hostname, ':')) { /* if literal IPv6 address */
+ if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
+ buf = apr_pstrcat(p, "Host: [", uri->hostname, "]:",
+ uri->port_str, CRLF, NULL);
+ } else {
+ buf = apr_pstrcat(p, "Host: [", uri->hostname, "]", CRLF, NULL);
+ }
+ } else {
+ if (uri->port_str && uri->port != DEFAULT_HTTP_PORT) {
+ buf = apr_pstrcat(p, "Host: ", uri->hostname, ":",
+ uri->port_str, CRLF, NULL);
+ } else {
+ buf = apr_pstrcat(p, "Host: ", uri->hostname, CRLF, NULL);
+ }
+ }
+ }
+ else {
+ /* don't want to use r->hostname, as the incoming header might have a
+ * port attached
+ */
+ const char* hostname = apr_table_get(r->headers_in,"Host");
+ if (!hostname) {
+ hostname = r->server->server_hostname;
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01092)
+ "no HTTP 0.9 request (with no host line) "
+ "on incoming request and preserve host set "
+ "forcing hostname to be %s for uri %s",
+ hostname, r->uri);
+ }
+ buf = apr_pstrcat(p, "Host: ", hostname, CRLF, NULL);
+ }
+ ap_xlate_proto_to_ascii(buf, strlen(buf));
+ e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(header_brigade, e);
+
+ /* handle Via */
+ if (conf->viaopt == via_block) {
+ /* Block all outgoing Via: headers */
+ apr_table_unset(r->headers_in, "Via");
+ } else if (conf->viaopt != via_off) {
+ const char *server_name = ap_get_server_name(r);
+ /* If USE_CANONICAL_NAME_OFF was configured for the proxy virtual host,
+ * then the server name returned by ap_get_server_name() is the
+ * origin server name (which does make too much sense with Via: headers)
+ * so we use the proxy vhost's name instead.
+ */
+ if (server_name == r->hostname)
+ server_name = r->server->server_hostname;
+ /* Create a "Via:" request header entry and merge it */
+ /* Generate outgoing Via: header with/without server comment: */
+ apr_table_mergen(r->headers_in, "Via",
+ (conf->viaopt == via_full)
+ ? apr_psprintf(p, "%d.%d %s%s (%s)",
+ HTTP_VERSION_MAJOR(r->proto_num),
+ HTTP_VERSION_MINOR(r->proto_num),
+ server_name, server_portstr,
+ AP_SERVER_BASEVERSION)
+ : apr_psprintf(p, "%d.%d %s%s",
+ HTTP_VERSION_MAJOR(r->proto_num),
+ HTTP_VERSION_MINOR(r->proto_num),
+ server_name, server_portstr)
+ );
+ }
+
+ /* Use HTTP/1.1 100-Continue as quick "HTTP ping" test
+ * to backend
+ */
+ if (do_100_continue) {
+ apr_table_mergen(r->headers_in, "Expect", "100-Continue");
+ r->expecting_100 = 1;
+ }
+
+ /* X-Forwarded-*: handling
+ *
+ * XXX Privacy Note:
+ * -----------------
+ *
+ * These request headers are only really useful when the mod_proxy
+ * is used in a reverse proxy configuration, so that useful info
+ * about the client can be passed through the reverse proxy and on
+ * to the backend server, which may require the information to
+ * function properly.
+ *
+ * In a forward proxy situation, these options are a potential
+ * privacy violation, as information about clients behind the proxy
+ * are revealed to arbitrary servers out there on the internet.
+ *
+ * The HTTP/1.1 Via: header is designed for passing client
+ * information through proxies to a server, and should be used in
+ * a forward proxy configuation instead of X-Forwarded-*. See the
+ * ProxyVia option for details.
+ */
+ if (dconf->add_forwarded_headers) {
+ if (PROXYREQ_REVERSE == r->proxyreq) {
+ const char *buf;
+
+ /* Add X-Forwarded-For: so that the upstream has a chance to
+ * determine, where the original request came from.
+ */
+ apr_table_mergen(r->headers_in, "X-Forwarded-For",
+ r->useragent_ip);
+
+ /* Add X-Forwarded-Host: so that upstream knows what the
+ * original request hostname was.
+ */
+ if ((buf = apr_table_get(r->headers_in, "Host"))) {
+ apr_table_mergen(r->headers_in, "X-Forwarded-Host", buf);
+ }
+
+ /* Add X-Forwarded-Server: so that upstream knows what the
+ * name of this proxy server is (if there are more than one)
+ * XXX: This duplicates Via: - do we strictly need it?
+ */
+ apr_table_mergen(r->headers_in, "X-Forwarded-Server",
+ r->server->server_hostname);
+ }
+ }
+
+ proxy_run_fixups(r);
+ /*
+ * Make a copy of the headers_in table before clearing the connection
+ * headers as we need the connection headers later in the http output
+ * filter to prepare the correct response headers.
+ *
+ * Note: We need to take r->pool for apr_table_copy as the key / value
+ * pairs in r->headers_in have been created out of r->pool and
+ * p might be (and actually is) a longer living pool.
+ * This would trigger the bad pool ancestry abort in apr_table_copy if
+ * apr is compiled with APR_POOL_DEBUG.
+ */
+ headers_in_copy = apr_table_copy(r->pool, r->headers_in);
+ proxy_clear_connection(p, headers_in_copy);
+ /* send request headers */
+ headers_in_array = apr_table_elts(headers_in_copy);
+ headers_in = (const apr_table_entry_t *) headers_in_array->elts;
+ for (counter = 0; counter < headers_in_array->nelts; counter++) {
+ if (headers_in[counter].key == NULL
+ || headers_in[counter].val == NULL
+
+ /* Already sent */
+ || !strcasecmp(headers_in[counter].key, "Host")
+
+ /* Clear out hop-by-hop request headers not to send
+ * RFC2616 13.5.1 says we should strip these headers
+ */
+ || !strcasecmp(headers_in[counter].key, "Keep-Alive")
+ || !strcasecmp(headers_in[counter].key, "TE")
+ || !strcasecmp(headers_in[counter].key, "Trailer")
+ || !strcasecmp(headers_in[counter].key, "Upgrade")
+
+ ) {
+ continue;
+ }
+ /* Do we want to strip Proxy-Authorization ?
+ * If we haven't used it, then NO
+ * If we have used it then MAYBE: RFC2616 says we MAY propagate it.
+ * So let's make it configurable by env.
+ */
+ if (!strcasecmp(headers_in[counter].key,"Proxy-Authorization")) {
+ if (r->user != NULL) { /* we've authenticated */
+ if (!apr_table_get(r->subprocess_env, "Proxy-Chain-Auth")) {
+ continue;
+ }
+ }
+ }
+
+ /* Skip Transfer-Encoding and Content-Length for now.
+ */
+ if (!strcasecmp(headers_in[counter].key, "Transfer-Encoding")) {
+ *old_te_val = headers_in[counter].val;
+ continue;
+ }
+ if (!strcasecmp(headers_in[counter].key, "Content-Length")) {
+ *old_cl_val = headers_in[counter].val;
+ continue;
+ }
+
+ /* for sub-requests, ignore freshness/expiry headers */
+ if (r->main) {
+ if ( !strcasecmp(headers_in[counter].key, "If-Match")
+ || !strcasecmp(headers_in[counter].key, "If-Modified-Since")
+ || !strcasecmp(headers_in[counter].key, "If-Range")
+ || !strcasecmp(headers_in[counter].key, "If-Unmodified-Since")
+ || !strcasecmp(headers_in[counter].key, "If-None-Match")) {
+ continue;
+ }
+ }
+
+ buf = apr_pstrcat(p, headers_in[counter].key, ": ",
+ headers_in[counter].val, CRLF,
+ NULL);
+ ap_xlate_proto_to_ascii(buf, strlen(buf));
+ e = apr_bucket_pool_create(buf, strlen(buf), p, c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(header_brigade, e);
+ }
+ return OK;
+}
+
+PROXY_DECLARE(int) ap_proxy_pass_brigade(apr_bucket_alloc_t *bucket_alloc,
+ request_rec *r, proxy_conn_rec *p_conn,
+ conn_rec *origin, apr_bucket_brigade *bb,
+ int flush)
+{
+ apr_status_t status;
+ apr_off_t transferred;
+
+ if (flush) {
+ apr_bucket *e = apr_bucket_flush_create(bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(bb, e);
+ }
+ apr_brigade_length(bb, 0, &transferred);
+ if (transferred != -1)
+ p_conn->worker->s->transferred += transferred;
+ status = ap_pass_brigade(origin->output_filters, bb);
+ if (status != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(01084)
+ "pass request body failed to %pI (%s)",
+ p_conn->addr, p_conn->hostname);
+ if (origin->aborted) {
+ const char *ssl_note;
+
+ if (((ssl_note = apr_table_get(origin->notes, "SSL_connect_rv"))
+ != NULL) && (strcmp(ssl_note, "err") == 0)) {
+ return ap_proxyerror(r, HTTP_INTERNAL_SERVER_ERROR,
+ "Error during SSL Handshake with"
+ " remote server");
+ }
+ return APR_STATUS_IS_TIMEUP(status) ? HTTP_GATEWAY_TIME_OUT : HTTP_BAD_GATEWAY;
+ }
+ else {
+ return HTTP_BAD_REQUEST;
+ }
+ }
+ apr_brigade_cleanup(bb);
+ return OK;
+}
projects / apache / commitdiff