1 files changed, 151 insertions, 0 deletions
diff --git a/modules.d/35network-legacy/parse-ip-opts.sh b/modules.d/35network-legacy/parse-ip-opts.sh
new file mode 100755
index 0000000..8263321
--- /dev/null
+++ b/modules.d/35network-legacy/parse-ip-opts.sh
@@ -0,0 +1,151 @@
+#!/bin/sh
+#
+# Format:
+#       ip=[dhcp|on|any|single-dhcp]
+#
+#       ip=<interface>:[dhcp|on|any][:[<mtu>][:<macaddr>]]
+#
+#       ip=<client-IP-number>:<server-IP-number>:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:{dhcp|on|any|none|off}[:[<mtu>][:<macaddr>]]
+#
+# When supplying more than only ip= line, <interface> is mandatory and
+# bootdev= must contain the name of the primary interface to use for
+# routing,dns,dhcp-options,etc.
+#
+
+# we really need to use `expr substr` with dash
+# shellcheck disable=SC2003 disable=SC2308
+
+command -v getarg > /dev/null || . /lib/dracut-lib.sh
+
+if [ -n "$netroot" ] && [ -z "$(getarg ip=)" ] && [ -z "$(getarg BOOTIF=)" ]; then
+    # No ip= argument(s) for netroot provided, defaulting to DHCP
+    return
+fi
+
+# Count ip= lines to decide whether we need bootdev= or not
+if [ -z "$NEEDBOOTDEV" ]; then
+    count=0
+    for p in $(getargs ip=); do
+        case "$p" in
+            ibft)
+                continue
+                ;;
+        esac
+        count=$((count + 1))
+    done
+    [ $count -gt 1 ] && NEEDBOOTDEV=1
+fi
+unset count
+
+# If needed, check if bootdev= contains anything usable
+BOOTDEV=$(getarg bootdev=)
+
+if [ -n "$NEEDBOOTDEV" ] && getargbool 1 rd.neednet; then
+    #[ -z "$BOOTDEV" ] && warn "Please supply bootdev argument for multiple ip= lines"
+    echo "rd.neednet=1" > /etc/cmdline.d/dracut-neednet.conf
+    info "Multiple ip= arguments: assuming rd.neednet=1"
+else
+    unset NEEDBOOTDEV
+fi
+
+# Check ip= lines
+# XXX Would be nice if we could errorcheck ip addresses here as well
+for p in $(getargs ip=); do
+    ip_to_var "$p"
+
+    # make first device specified the BOOTDEV
+    if [ -n "$NEEDBOOTDEV" ] && [ -z "$BOOTDEV" ] && [ -n "$dev" ]; then
+        BOOTDEV="$dev"
+        info "Setting bootdev to '$BOOTDEV'"
+    fi
+
+    # skip ibft since we did it above
+    [ "$autoconf" = "ibft" ] && continue
+
+    # Empty autoconf defaults to 'dhcp'
+    if [ -z "$autoconf" ]; then
+        warn "Empty autoconf values default to dhcp"
+        autoconf="dhcp"
+    fi
+
+    # Error checking for autoconf in combination with other values
+    for autoopt in $(str_replace "$autoconf" "," " "); do
+        case $autoopt in
+            error) die "Error parsing option 'ip=$p'" ;;
+            bootp | rarp | both) die "Sorry, ip=$autoopt is currently unsupported" ;;
+            none | off)
+                [ -z "$ip" ] \
+                    && die "For argument 'ip=$p'\nValue '$autoopt' without static configuration does not make sense"
+                [ -z "$mask" ] \
+                    && die "Sorry, automatic calculation of netmask is not yet supported"
+                ;;
+            auto6 | link6) ;;
+            either6) ;;
+            dhcp | dhcp6 | on | any | single-dhcp)
+                [ -n "$NEEDBOOTDEV" ] && [ -z "$dev" ] \
+                    && die "Sorry, 'ip=$p' does not make sense for multiple interface configurations"
+                [ -n "$ip" ] \
+                    && die "For argument 'ip=$p'\nSorry, setting client-ip does not make sense for '$autoopt'"
+                ;;
+            *) die "For argument 'ip=$p'\nSorry, unknown value '$autoopt'" ;;
+        esac
+    done
+
+    if [ -n "$dev" ]; then
+        # We don't like duplicate device configs
+        if [ -n "$IFACES" ]; then
+            for i in $IFACES; do
+                [ "$dev" = "$i" ] && die "For argument 'ip=$p'\nDuplication configurations for '$dev'"
+            done
+        fi
+        # IFACES list for later use
+        IFACES="$IFACES $dev"
+
+        # Interface should exist
+        if [ ! -e "/sys/class/net/$dev" ]; then
+            warn "Network interface '$dev' does not exist"
+        fi
+    fi
+
+    # Do we need to check for specific options?
+    if [ -n "$NEEDDHCP" ] || [ -n "$DHCPORSERVER" ]; then
+        # Correct device? (Empty is ok as well)
+        [ "$dev" = "$BOOTDEV" ] || continue
+        # Server-ip is there?
+        [ -n "$DHCPORSERVER" ] && [ -n "$srv" ] && continue
+        # dhcp? (It's simpler to check for a set ip. Checks above ensure that if
+        # ip is there, we're static
+        [ -z "$ip" ] && continue
+        # Not good!
+        die "Server-ip or dhcp for netboot needed, but current arguments say otherwise"
+    fi
+
+    if str_starts "$dev" "enx" && [ ${#dev} -eq 15 ]; then
+        # shellcheck disable=SC2003
+        printf -- "ifname=%s:%s:%s:%s:%s:%s:%s\n" \
+            "$dev" \
+            "$(expr substr "$dev" 3 2)" \
+            "$(expr substr "$dev" 5 2)" \
+            "$(expr substr "$dev" 7 2)" \
+            "$(expr substr "$dev" 9 2)" \
+            "$(expr substr "$dev" 11 2)" \
+            "$(expr substr "$dev" 13 2)" \
+            >> /etc/cmdline.d/80-enx.conf
+    fi
+done
+
+# put BOOTIF in IFACES to make sure it comes up
+if getargbool 1 "rd.bootif" && BOOTIF="$(getarg BOOTIF=)"; then
+    BOOTDEV=$(fix_bootif "$BOOTIF")
+    IFACES="$BOOTDEV $IFACES"
+fi
+
+# This ensures that BOOTDEV is always first in IFACES
+if [ -n "$BOOTDEV" ] && [ -n "$IFACES" ]; then
+    IFACES="${IFACES%"$BOOTDEV"*} ${IFACES#*"$BOOTDEV"}"
+    IFACES="$BOOTDEV $IFACES"
+fi
+
+# Store BOOTDEV and IFACES for later use
+[ -n "$BOOTDEV" ] && echo "$BOOTDEV" > /tmp/net.bootdev
+[ -n "$IFACES" ] && echo "$IFACES" > /tmp/net.ifaces