lldpd: extended interface(s) parsing to handle patterns

For interface type parameters, the man page documents patterns:
```
*,!eth*,!!eth1

uses all interfaces, except interfaces starting with "eth",
but including "eth1".
```

* Renamed `_ifname` to `_l2dev`.
* get the l2dev via network_get_physdev (and not l3dev)
* Glob pattern `*` is also valid - use noglob for this

The net result is that now interface 'names' including globs '*' and '!'
inversions are included in the generated lldpd configs.

Temporarily `set -o noglob` and then `set +o noglob` to disable & enable
globbing respectively, because when we pass `*` as an interface choice,
other file and pathnames get sucked in from where the init script runs,
and the `*` never makes it to lldpd.

Tested extensively on: 22.03.6, 23.05.3

Signed-off-by: Paul Donald <newtwen+github@gmail.com>
[ squash with commit bumping release version ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/package/network/services/lldpd/Makefile b/package/network/services/lldpd/Makefile
index 18cdda33ce725ec50fe9688f4d25b583cb367bab..5a9a9732d20521a020cc4d2efad9aa8461900a34 100644 (file)
--- a/package/network/services/lldpd/Makefile
+++ b/package/network/services/lldpd/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lldpd
 PKG_VERSION:=1.0.17
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/lldpd/lldpd/releases/download/$(PKG_VERSION)/

diff --git a/package/network/services/lldpd/files/lldpd.init b/package/network/services/lldpd/files/lldpd.init
index 31cd7fd389cb3f0106bc55fdb8edfdc7f3512071..dbe79d2f4a176659e60310bd63803523acd19c59 100644 (file)
--- a/package/network/services/lldpd/files/lldpd.init
+++ b/package/network/services/lldpd/files/lldpd.init
@@ -80,12 +80,20 @@ get_config_cid_ifaces() {
        config_get _ifaces 'config' "$2"
 
        local _iface _ifnames=""
+       # Set noglob to prevent '*' capturing diverse file names in the for ... in
+       set -o noglob
        for _iface in $_ifaces; do
-               local _ifname=""
-               if network_get_device _ifname "$_iface" || [ -e "/sys/class/net/$_iface" ]; then
-                       append _ifnames "${_ifname:-$_iface}" ","
+
+               local _l2device=""
+               if network_get_physdev _l2device "$_iface" || [ -e "/sys/class/net/$_iface" ]; then
+                       append _ifnames "${_l2device:-$_iface}" ","
+               else
+                       # Glob case (interface is e.g. '!eth1' or 'eth*' or '*')
+                       append _ifnames "$_iface" ","
                fi
        done
+       # Turn noglob off i.e. enable glob again
+       set +o noglob
 
        export -n "${1}=$_ifnames"
 }