diff --git a/modules/proxy/mod_proxy.c b/modules/proxy/mod_proxy.c index a6df1b8..94ec87e 100644 --- a/modules/proxy/mod_proxy.c +++ b/modules/proxy/mod_proxy.c @@ -968,6 +968,7 @@ static int proxy_fixup(request_rec *r) 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 */ @@ -1021,7 +1022,7 @@ static int proxy_handler(request_rec *r) 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 rc = DECLINED, access_status, i; int direct_connect = 0; const char *str; apr_int64_t maxfwd; @@ -1036,19 +1037,28 @@ static int proxy_handler(request_rec *r) return DECLINED; } - if (!r->proxyreq) { - /* We may have forced the proxy handler via config or .htaccess */ - if (r->handler && - strncmp(r->handler, "proxy:", 6) == 0 && - strncmp(r->filename, "proxy:", 6) != 0) { - r->proxyreq = PROXYREQ_REVERSE; - r->filename = apr_pstrcat(r->pool, r->handler, r->filename, NULL); + /* We may have forced the proxy handler via config or .htaccess */ + if (!r->proxyreq && r->handler && strncmp(r->handler, "proxy:", 6) == 0) { + char *old_filename = r->filename; + + r->proxyreq = PROXYREQ_REVERSE; + r->filename = apr_pstrcat(r->pool, r->handler, r->filename, NULL); + + /* Still need to fixup/canonicalize r->filename */ + rc = ap_proxy_fixup_uds_filename(r); + if (rc <= OK) { + rc = proxy_fixup(r); } - else { - return DECLINED; + if (rc != OK) { + r->filename = old_filename; + r->proxyreq = 0; } - } else if (strncmp(r->filename, "proxy:", 6) != 0) { - return DECLINED; + } + else if (r->proxyreq && strncmp(r->filename, "proxy:", 6) == 0) { + rc = OK; + } + if (rc != OK) { + return rc; } /* handle max-forwards / OPTIONS / TRACE */ diff --git a/modules/proxy/mod_proxy.h b/modules/proxy/mod_proxy.h index e5c0a26..354f395 100644 --- a/modules/proxy/mod_proxy.h +++ b/modules/proxy/mod_proxy.h @@ -921,6 +921,14 @@ PROXY_DECLARE(proxy_balancer_shared *) ap_proxy_find_balancershm(ap_slotmem_prov proxy_balancer *balancer, unsigned int *index); +/* + * Strip the UDS part of r->filename if any, and put the UDS path in + * r->notes ("uds_path") + * @param r current request + * @return OK if fixed up, DECLINED if not UDS, or an HTTP_XXX error + */ +PROXY_DECLARE(int) ap_proxy_fixup_uds_filename(request_rec *r); + /** * Get the most suitable worker and/or balancer for the request * @param worker worker used for processing request diff --git a/modules/proxy/proxy_util.c b/modules/proxy/proxy_util.c index 6626ea0..6244e74 100644 --- a/modules/proxy/proxy_util.c +++ b/modules/proxy/proxy_util.c @@ -2098,7 +2098,7 @@ static int ap_proxy_retry_worker(const char *proxy_function, proxy_worker *worke * were passed a UDS url (eg: from mod_proxy) and adjust uds_path * as required. */ -static int fix_uds_filename(request_rec *r, char **url) +PROXY_DECLARE(int) ap_proxy_fixup_uds_filename(request_rec *r) { char *uds_url = r->filename + 6, *origin_url; @@ -2106,7 +2106,6 @@ static int fix_uds_filename(request_rec *r, char **url) !ap_cstr_casecmpn(uds_url, "unix:", 5) && (origin_url = ap_strchr(uds_url + 5, '|'))) { char *uds_path = NULL; - apr_size_t url_len; apr_uri_t urisock; apr_status_t rv; @@ -2122,21 +2121,20 @@ static int fix_uds_filename(request_rec *r, char **url) if (!uds_path) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(10292) "Invalid proxy UDS filename (%s)", r->filename); - return 0; + return HTTP_BAD_REQUEST; } apr_table_setn(r->notes, "uds_path", uds_path); - /* Remove the UDS path from *url and r->filename */ - url_len = strlen(origin_url); - *url = apr_pstrmemdup(r->pool, origin_url, url_len); - memcpy(uds_url, *url, url_len + 1); - ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, - "*: rewrite of url due to UDS(%s): %s (%s)", - uds_path, *url, r->filename); + "*: fixup UDS from %s: %s (%s)", + r->filename, origin_url, uds_path); + + /* Overwrite the UDS part in place */ + memmove(uds_url, origin_url, strlen(origin_url) + 1); + return OK; } - return 1; + return DECLINED; } PROXY_DECLARE(int) ap_proxy_pre_request(proxy_worker **worker, @@ -2155,9 +2153,6 @@ PROXY_DECLARE(int) ap_proxy_pre_request(proxy_worker **worker, ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: found worker %s for %s", (*worker)->s->scheme, (*worker)->s->name, *url); - if (!forward && !fix_uds_filename(r, url)) { - return HTTP_INTERNAL_SERVER_ERROR; - } access_status = OK; } else if (forward) { @@ -2187,9 +2182,6 @@ PROXY_DECLARE(int) ap_proxy_pre_request(proxy_worker **worker, * regarding the Connection header in the request. */ apr_table_setn(r->subprocess_env, "proxy-nokeepalive", "1"); - if (!fix_uds_filename(r, url)) { - return HTTP_INTERNAL_SERVER_ERROR; - } } } } @@ -2199,6 +2191,20 @@ PROXY_DECLARE(int) ap_proxy_pre_request(proxy_worker **worker, "all workers are busy. Unable to serve %s", *url); access_status = HTTP_SERVICE_UNAVAILABLE; } + + if (access_status == OK && r->proxyreq == PROXYREQ_REVERSE) { + int rc = ap_proxy_fixup_uds_filename(r); + if (ap_is_HTTP_ERROR(rc)) { + return rc; + } + /* If the URL has changed in r->filename, take everything after + * the "proxy:" prefix. + */ + if (rc == OK) { + *url = apr_pstrdup(r->pool, r->filename + 6); + } + } + return access_status; }