nginx-util: fix PROVIDES and issue #6905

nginx-ssl-util and nginx-ssl-util-nopcre are replacements for each other,
but cannot replace nginx-util (instead conflict with it).

The hard coded [::1] could lead to a nginx error if build without IPv6.
So, get the loopback addresses dynamically.

Signed-off-by: Peter Stadler <peter.stadler@student.uibk.ac.at>

net/nginx-util/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nginx-util
 PKG_VERSION:=1.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/cmake.mk
@@ -13,13 +13,14 @@ define Package/nginx-util
   SUBMENU:=Web Servers/Proxies
   TITLE:=Builder of LAN listen directives for Nginx
   DEPENDS:=+libstdcpp +libubus +libubox +libpthread
-  PROVIDES:=nginx-util
 endef
 
 define Package/nginx-ssl-util/default
   $(Package/nginx-util)
   TITLE+= and manager of its SSL certificates
-  DEPENDS+=+libopenssl
+  DEPENDS+= +libopenssl
+  CONFLICTS:=nginx-util
+  PROVIDES:=nginx-ssl-util
 endef
 
 define Package/nginx-ssl-util-nopcre
@@ -30,7 +31,7 @@ endef
 define Package/nginx-ssl-util
   $(Package/nginx-ssl-util/default)
   TITLE+= (using PCRE)
-  DEPENDS+=+libpcre
+  DEPENDS+= +libpcre
 endef
 
 define Package/nginx-util/description

net/nginx-util/src/nginx-util.cpp

@@ -13,6 +13,7 @@ void create_lan_listen()
     std::string ssl_listen = listen;
     std::string ssl_listen_default = listen;
 
+#ifndef NO_UBUS
     auto add_listen = [&listen, &listen_default
 #ifdef NGINX_OPENSSL
                        ,&ssl_listen, &ssl_listen_default
@@ -31,10 +32,16 @@ void create_lan_listen()
 #endif
     };
 
-    add_listen("", "127.0.0.1", "");
-    add_listen("[", "::1", "]");
+    auto loopback_status = ubus::call("network.interface.loopback", "status");
+
+    for (auto ip : loopback_status.filter("ipv4-address", "", "address")) {
+        add_listen("",  static_cast<const char *>(blobmsg_data(ip)), "");
+    }
+
+    for (auto ip : loopback_status.filter("ipv6-address", "", "address")) {
+        add_listen("[", static_cast<const char *>(blobmsg_data(ip)), "]");
+    }
 
-#ifndef NO_UBUS
     auto lan_status = ubus::call("network.interface.lan", "status");
 
     for (auto ip : lan_status.filter("ipv4-address", "", "address")) {

net/nginx-util/src/ubus-cxx.hpp

@@ -31,7 +31,7 @@ extern "C" { //TODO(pst): remove when in upstream
 // std::cout<<std::endl;
 
 // // example for exploring:
-// ubus::strings keys{"ipv4-address", "", "*"};
+// ubus::strings keys{"ipv4-address", "", ""};
 // for (auto x : ubus::call("network.interface.lan", "status").filter(keys)) {
 //     std::cout<<blobmsg_name(x)<<": ";
 //     switch (blob_id(x)) {
@@ -173,8 +173,7 @@ private:
 
 public:
 
-
-    explicit iterator(const blob_attr * msg, const strings & filter)
+    explicit iterator(const blob_attr * msg, const strings & filter={""})
     : keys{filter}, n{keys.size()-1}, pos{msg}, cur{this}
     {
         if (pos!=nullptr) {