diff --git a/docs/manual/mod/core.html.en b/docs/manual/mod/core.html.en
index 86d9bee..e08034b 100644
--- a/docs/manual/mod/core.html.en
+++ b/docs/manual/mod/core.html.en
@@ -90,6 +90,7 @@ available</td></tr>
<li><img alt="" src="../images/down.gif" /> <a href="#maxrangeoverlaps">MaxRangeOverlaps</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxrangereversals">MaxRangeReversals</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxranges">MaxRanges</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#mergeslashes">MergeSlashes</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#mutex">Mutex</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#namevirtualhost">NameVirtualHost</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li>
@@ -3170,6 +3171,30 @@ resource </td></tr>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="directive-section"><h2><a name="MergeSlashes" id="MergeSlashes">MergeSlashes</a> <a name="mergeslashes" id="mergeslashes">Directive</a></h2>
+<table class="directive">
+<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Controls whether the server merges consecutive slashes in URLs. </td></tr>
+<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>MergeSlashes ON | OFF</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>MergeSlashes ON</code></td></tr>
+<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
+<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Core</td></tr>
+<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>core</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache HTTP Server 2.4.6 in Red Hat Enterprise Linux 7</td></tr>
+</table>
+ <p>By default, the server merges (or collapses) multiple consecutive slash
+ ('/') characters in the path component of the request URL.</p>
+
+ <p>When mapping URL's to the filesystem, these multiple slashes are not
+ significant. However, URL's handled other ways, such as by CGI or proxy,
+ might prefer to retain the significance of multiple consecutive slashes.
+ In these cases <code class="directive">MergeSlashes</code> can be set to
+ <em>OFF</em> to retain the multiple consecutive slashes. In these
+ configurations, regular expressions used in the configuration file that match
+ the path component of the URL (<code class="directive">LocationMatch</code>,
+ <code class="directive">RewriteRule</code>, ...) need to take into account multiple
+ consecutive slashes.</p>
+</div>
+<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="Mutex" id="Mutex">Mutex</a> <a name="mutex" id="mutex">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Configures mutex mechanism and lock file directory for all
diff --git a/include/http_core.h b/include/http_core.h
index c05d06e..76bf5a4 100644
--- a/include/http_core.h
+++ b/include/http_core.h
@@ -465,6 +465,17 @@ typedef unsigned long etag_components_t;
/* This is the default value used */
#define ETAG_BACKWARD (ETAG_MTIME | ETAG_SIZE)
+/* Generic ON/OFF/UNSET for unsigned int foo :2 */
+#define AP_CORE_CONFIG_OFF (0)
+#define AP_CORE_CONFIG_ON (1)
+#define AP_CORE_CONFIG_UNSET (2)
+
+/* Generic merge of flag */
+#define AP_CORE_MERGE_FLAG(field, to, base, over) to->field = \
+ over->field != AP_CORE_CONFIG_UNSET \
+ ? over->field \
+ : base->field
+
/**
* @brief Server Signature Enumeration
*/
@@ -682,7 +693,7 @@ typedef struct {
#define AP_HTTP_METHODS_LENIENT 1
#define AP_HTTP_METHODS_REGISTERED 2
char http_methods;
-
+ unsigned int merge_slashes;
} core_server_config;
/* for AddOutputFiltersByType in core.c */
diff --git a/include/httpd.h b/include/httpd.h
index 176ef5e..a552358 100644
--- a/include/httpd.h
+++ b/include/httpd.h
@@ -1622,11 +1622,21 @@ AP_DECLARE(int) ap_unescape_url_keep2f(char *url, int decode_slashes);
AP_DECLARE(int) ap_unescape_urlencoded(char *query);
/**
- * Convert all double slashes to single slashes
- * @param name The string to convert
+ * Convert all double slashes to single slashes, except where significant
+ * to the filesystem on the current platform.
+ * @param name The string to convert, assumed to be a filesystem path
*/
AP_DECLARE(void) ap_no2slash(char *name);
+/**
+ * Convert all double slashes to single slashes, except where significant
+ * to the filesystem on the current platform.
+ * @param name The string to convert
+ * @param is_fs_path if set to 0, the significance of any double-slashes is
+ * ignored.
+ */
+AP_DECLARE(void) ap_no2slash_ex(char *name, int is_fs_path);
+
/**
* Remove all ./ and xx/../ substrings from a file name. Also remove
* any leading ../ or /../ substrings.
diff --git a/server/core.c b/server/core.c
index 0e69f8c..67efd7e 100644
--- a/server/core.c
+++ b/server/core.c
@@ -476,6 +476,7 @@ static void *create_core_server_config(apr_pool_t *a, server_rec *s)
*/
conf->trace_enable = AP_TRACE_UNSET;
+ conf->merge_slashes = AP_CORE_CONFIG_UNSET;
return (void *)conf;
}
@@ -536,6 +537,8 @@ static void *merge_core_server_configs(apr_pool_t *p, void *basev, void *virtv)
? virt->merge_trailers
: base->merge_trailers;
+ AP_CORE_MERGE_FLAG(merge_slashes, conf, base, virt);
+
return conf;
}
@@ -1673,6 +1676,13 @@ static const char *set_override(cmd_parms *cmd, void *d_, const char *l)
return NULL;
}
+static const char *set_core_server_flag(cmd_parms *cmd, void *s_, int flag)
+{
+ core_server_config *conf =
+ ap_get_core_module_config(cmd->server->module_config);
+ return ap_set_flag_slot(cmd, conf, flag);
+}
+
static const char *set_override_list(cmd_parms *cmd, void *d_, int argc, char *const argv[])
{
core_dir_config *d = d_;
@@ -4216,6 +4226,10 @@ AP_INIT_ITERATE("HttpProtocolOptions", set_http_protocol_options, NULL, RSRC_CON
,
AP_INIT_ITERATE("RegisterHttpMethod", set_http_method, NULL, RSRC_CONF,
"Registers non-standard HTTP methods"),
+AP_INIT_FLAG("MergeSlashes", set_core_server_flag,
+ (void *)APR_OFFSETOF(core_server_config, merge_slashes),
+ RSRC_CONF,
+ "Controls whether consecutive slashes in the URI path are merged"),
{ NULL }
};
diff --git a/server/request.c b/server/request.c
index 4eef097..cba3891 100644
--- a/server/request.c
+++ b/server/request.c
@@ -167,6 +167,8 @@ AP_DECLARE(int) ap_process_request_internal(request_rec *r)
int file_req = (r->main && r->filename);
int access_status;
core_dir_config *d;
+ core_server_config *sconf =
+ ap_get_core_module_config(r->server->module_config);
/* Ignore embedded %2F's in path for proxy requests */
if (!r->proxyreq && r->parsed_uri.path) {
@@ -191,6 +193,12 @@ AP_DECLARE(int) ap_process_request_internal(request_rec *r)
}
ap_getparents(r->uri); /* OK --- shrinking transformations... */
+ if (sconf->merge_slashes != AP_CORE_CONFIG_OFF) {
+ ap_no2slash(r->uri);
+ if (r->parsed_uri.path) {
+ ap_no2slash(r->parsed_uri.path);
+ }
+ }
/* All file subrequests are a huge pain... they cannot bubble through the
* next several steps. Only file subrequests are allowed an empty uri,
@@ -1383,20 +1391,7 @@ AP_DECLARE(int) ap_location_walk(request_rec *r)
cache = prep_walk_cache(AP_NOTE_LOCATION_WALK, r);
cached = (cache->cached != NULL);
-
- /* Location and LocationMatch differ on their behaviour w.r.t. multiple
- * slashes. Location matches multiple slashes with a single slash,
- * LocationMatch doesn't. An exception, for backwards brokenness is
- * absoluteURIs... in which case neither match multiple slashes.
- */
- if (r->uri[0] != '/') {
- entry_uri = r->uri;
- }
- else {
- char *uri = apr_pstrdup(r->pool, r->uri);
- ap_no2slash(uri);
- entry_uri = uri;
- }
+ entry_uri = r->uri;
/* If we have an cache->cached location that matches r->uri,
* and the vhost's list of locations hasn't changed, we can skip
@@ -1449,7 +1444,7 @@ AP_DECLARE(int) ap_location_walk(request_rec *r)
* terminated (or at the end of the string) to match.
*/
if (entry_core->r
- ? ap_regexec(entry_core->r, r->uri, 0, NULL, 0)
+ ? ap_regexec(entry_core->r, entry_uri, 0, NULL, 0)
: (entry_core->d_is_fnmatch
? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
: (strncmp(entry_core->d, cache->cached, len)
diff --git a/server/util.c b/server/util.c
index f9e3b51..4eac462 100644
--- a/server/util.c
+++ b/server/util.c
@@ -561,16 +561,20 @@ AP_DECLARE(void) ap_getparents(char *name)
name[l] = '\0';
}
}
-
-AP_DECLARE(void) ap_no2slash(char *name)
+AP_DECLARE(void) ap_no2slash_ex(char *name, int is_fs_path)
{
+
char *d, *s;
+ if (!*name) {
+ return;
+ }
+
s = d = name;
#ifdef HAVE_UNC_PATHS
/* Check for UNC names. Leave leading two slashes. */
- if (s[0] == '/' && s[1] == '/')
+ if (is_fs_path && s[0] == '/' && s[1] == '/')
*d++ = *s++;
#endif
@@ -587,6 +591,10 @@ AP_DECLARE(void) ap_no2slash(char *name)
*d = '\0';
}
+AP_DECLARE(void) ap_no2slash(char *name)
+{
+ ap_no2slash_ex(name, 1);
+}
/*
* copy at most n leading directories of s into d