dhcpmngr: add micro service for Device.DHCPv4. and Device.DHCPv6.

* add support for DHCP data model objects as micro service (moved
  from bbfdm)
* add udhcpc.user.d script to keep track of remaining lease time
  (moved from bbfdm)
* replace function calls that do not work in micro service mode
* add pipeline

.gitlab-ci.yml

+include:
+  - project: 'iopsys/gitlab-ci-pipeline'
+    file: '/static-code-analysis.yml'
+    ref: '0.31'
+
+stages:
+    - static_code_analysis
+
+variables:
+  DEBUG: 'TRUE'
+  SOURCE_FOLDER: "./src"
+  FLAWFINDER_OPTIONS: "-m 4 --error-level=5"
+  CPPCHECK_OPTIONS: "--enable=all --error-exitcode=1"
+  COMPILE: "./gitlab-ci/compile.sh"
+

README.md

+# DHCP Manager
+
+This package contains code for the Device.DHCPv4. and Device.DHCPv6. objects.
+
+## Dependencies
+
+- For DHCP server, UCI file dhcp is being used (package dnsmasq).
+- For DHCP client, UCI file network is being used (package netifd).

gitlab-ci/compile.sh

+#!/bin/bash
+
+echo "Install dependencies"
+orig_dir=$(pwd)
+echo $orig_dir
+
+source ./gitlab-ci/shared.sh
+
+# install bbfdm
+install_bbfdm
+
+# compile
+set -e
+echo "build stage"
+cd $orig_dir/src/
+pwd

gitlab-ci/shared.sh

+#!/bin/bash
+
+function exec_cmd()
+{
+	echo "executing $@"
+	$@ >/dev/null 2>&1
+
+	if [ $? -ne 0 ]; then
+		echo "Failed to execute $@"
+		exit 1
+	fi
+}
+
+function install_bbfdm()
+{
+	[ -d "/opt/dev/bbfdm" ] && rm -rf /opt/dev/bbfdm
+
+	if [ -n "${BBFDM_BRANCH}" ]; then
+		exec_cmd git clone -b ${BBFDM_BRANCH} https://dev.iopsys.eu/bbf/bbfdm.git /opt/dev/bbfdm
+	else
+		exec_cmd git clone https://dev.iopsys.eu/bbf/bbfdm.git /opt/dev/bbfdm
+	fi
+
+	cd /opt/dev/bbfdm
+	./gitlab-ci/install-dependencies.sh install
+	./gitlab-ci/setup.sh install
+}

src/Makefile

+LIB = libdhcpmngr.so
+
+LIB_OBJS = dhcpmngr.o dhcpv4.o dhcpv6.o
+
+PROG_CFLAGS = $(CFLAGS) -Wall -Werror -fPIC
+LIB_LDFLAGS = $(LDFLAGS)
+
+%.o: %.c
+	$(CC) $(PROG_CFLAGS) -c -o $@ $<
+
+all: $(LIB)
+
+$(LIB): $(LIB_OBJS)
+	$(CC) $(PROG_CFLAGS) -shared -o $@ $^ $(LIB_LDFLAGS)
+
+clean:
+	rm -f *.o $(LIB)

src/dhcpmngr.c

+/*
+ * Copyright (C) 2024 iopsys Software Solutions AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ *	  Author Amin Ben Ramdhane <amin.benramdhane@pivasoftware.com>
+ *
+ */
+
+#include "dhcpmngr.h"
+#include "dhcpv4.h"
+#include "dhcpv6.h"
+
+DMOBJ tDHCPObjs[] = {
+/* OBJ, permission, addobj, delobj, checkdep, browseinstobj, nextdynamicobj, dynamicleaf, nextobj, leaf, linker, bbfdm_type, uniqueKeys*/
+{"DHCPv4", &DMREAD, NULL, NULL, "file:/lib/netifd/proto/dhcp.sh,/etc/config/dhcp", NULL, NULL, NULL, tDHCPv4Obj, tDHCPv4Params, NULL, BBFDM_BOTH, NULL},
+{"DHCPv6", &DMREAD, NULL, NULL, "file:/lib/netifd/proto/dhcpv6.sh,/etc/config/dhcp", NULL, NULL, NULL, tDHCPv6Obj, tDHCPv6Params, NULL, BBFDM_BOTH, NULL},
+{0}
+};
+
+/* ********** DynamicObj ********** */
+DM_MAP_OBJ tDynamicObj[] = {
+/* parentobj, nextobject, parameter */
+{"Device.", tDHCPObjs, NULL},
+{0}
+};

src/dhcpmngr.h

+/*
+ * Copyright (C) 2024 iopsys Software Solutions AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ *		Author: Anis Ellouze <anis.ellouze@pivasoftware.com>
+ *		Author: Omar Kallel <omar.kallel@pivasoftware.com>
+ *		Author: Amin Ben Ramdhane <amin.benramdhane@pivasoftware.com>
+ *
+ */
+
+#ifndef __DHCPMNGR_H
+#define __DHCPMNGR_H
+
+#include "libbbfdm-api/dmcommon.h"
+
+extern DMOBJ tDHCPObjs[];
+
+#endif

src/dhcpv4.h

+/*
+ * Copyright (C) 2024 iopsys Software Solutions AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ *		Author: Anis Ellouze <anis.ellouze@pivasoftware.com>
+ *
+ */
+
+#ifndef __DHCP_H
+#define __DHCP_H
+
+#include "libbbfdm-api/dmcommon.h"
+
+extern DMOBJ tDHCPv4Obj[];
+extern DMOBJ tDHCPv4ServerObj[];
+extern DMOBJ tDHCPv4ServerPoolObj[];
+extern DMOBJ tDHCPv4ServerPoolClientObj[];
+extern DMLEAF tDHCPv4ServerPoolParams[];
+extern DMLEAF tDHCPv4ServerPoolStaticAddressParams[];
+extern DMLEAF tDHCPv4ServerPoolClientParams[];
+extern DMLEAF tDHCPv4ServerPoolClientIPv4AddressParams[];
+
+extern DMLEAF tDHCPv4Params[];
+extern DMOBJ tDHCPv4ClientObj[];
+extern DMLEAF tDHCPv4ClientParams[];
+extern DMLEAF tDHCPv4ClientSentOptionParams[];
+extern DMLEAF tDHCPv4ClientReqOptionParams[];
+extern DMOBJ tDHCPv4ServerObj[];
+extern DMLEAF tDHCPv4ServerParams[];
+extern DMLEAF tDHCPv4ServerPoolOptionParams[];
+extern DMLEAF tDHCPv4ServerPoolClientIPv4AddressParams[];
+extern DMLEAF tDHCPv4ServerPoolClientOptionParams[];
+extern DMOBJ tDHCPv4RelayObj[];
+extern DMLEAF tDHCPv4RelayParams[];
+extern DMLEAF tDHCPv4RelayForwardingParams[];
+
+struct option_args
+{
+	char *tag;
+	char *value;
+};
+
+int set_section_order(char *package, char *dmpackage, char* sect_type, struct uci_section *dmmap_sect, struct uci_section *conf, int set_force, char* order);
+int get_value_in_mac_format(struct uci_section *s, char *option_name, bool type, char **value);
+bool tag_option_exists(char *dmmap_package, char *section, char *opt_check, char *value_check, char *tag_name, char *tag_value);
+char *generate_tag_option(char *dmmap_package, char *section, char *opt_check, char *value_check, char *tag_name);
+int get_dhcp_client_interface(void *data, char **value);
+#endif

src/dhcpv6.h

+/*
+ * Copyright (C) 2024 iopsys Software Solutions AB
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ *		Author: Omar Kallel <omar.kallel@pivasoftware.com>
+ */
+
+#ifndef __DHCPV6_H
+#define __DHCPV6_H
+
+#include "libbbfdm-api/dmcommon.h"
+
+extern DMOBJ tDHCPv6Obj[];
+extern DMLEAF tDHCPv6Params[];
+extern DMLEAF tDHCPv6ClientParams[];
+extern DMOBJ tDHCPv6ServerObj[];
+extern DMLEAF tDHCPv6ServerParams[];
+extern DMOBJ tDHCPv6ServerPoolObj[];
+extern DMLEAF tDHCPv6ServerPoolParams[];
+extern DMOBJ tDHCPv6ServerPoolClientObj[];
+extern DMLEAF tDHCPv6ServerPoolClientParams[];
+extern DMLEAF tDHCPv6ServerPoolClientIPv6AddressParams[];
+extern DMLEAF tDHCPv6ServerPoolClientIPv6PrefixParams[];
+extern DMLEAF tDHCPv6ServerPoolClientOptionParams[];
+extern DMLEAF tDHCPv6ServerPoolOptionParams[];
+
+#endif //__DHCPV6_H
+