dhcp: add nettools dhcp4 client
This is inspired by the existing systemd integration, with a few differences: * This parses the WPAD option, which systemd requested, but did not use. * We hook into the DAD handling, only making use of the configured address once DAD has completed successfully, and declining the lease if it fails. There are still many areas of possible improvement. In particular, we need to ensure the parsing of all options are compliant, as n-dhcp4 treats all options as opaque, unlike sd-dhcp4. We probably also need to look at how to handle failures and retries (in particular if we decline a lease). We need to query the current MTU at client startu, as well as the hardware broadcast address. Both these are provided by the kernel over netlink, so it should simply be a matter of hooking that up with NM's netlink layer. Contribution under LGPL2.0+, in addition to stated licenses.
This commit is contained in:
Tom Gundersen
committed by
Beniamino Galvani
Beniamino Galvani
parent
401fee7c20
commit
6adade6f21
47
Makefile.am
47
Makefile.am
@@ -266,6 +266,45 @@ endif
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###############################################################################
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noinst_LTLIBRARIES += shared/libndhcp4.la
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shared_libndhcp4_la_CFLAGS = \
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$(AM_CFLAGS) \
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-std=c11 \
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-Wno-error=declaration-after-statement \
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-Wno-pointer-arith \
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$(NULL)
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shared_libndhcp4_la_CPPFLAGS = \
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-D_GNU_SOURCE \
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$(CODE_COVERAGE_CFLAGS) \
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$(SANITIZER_LIB_CFLAGS) \
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-I$(srcdir)/shared/c-stdaux/src \
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-I$(srcdir)/shared/c-list/src \
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-I$(srcdir)/shared/c-siphash/src \
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$(NULL)
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shared_libndhcp4_la_LDFLAGS = \
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$(SANITIZER_LIB_LDFLAGS)
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shared_libndhcp4_la_SOURCES = \
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shared/n-dhcp4/src/n-dhcp4-c-connection.c \
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shared/n-dhcp4/src/n-dhcp4-c-lease.c \
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shared/n-dhcp4/src/n-dhcp4-c-probe.c \
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shared/n-dhcp4/src/n-dhcp4-client.c \
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shared/n-dhcp4/src/n-dhcp4-incoming.c \
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shared/n-dhcp4/src/n-dhcp4-outgoing.c \
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shared/n-dhcp4/src/n-dhcp4-private.h \
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shared/n-dhcp4/src/n-dhcp4-socket.c \
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shared/n-dhcp4/src/n-dhcp4.h \
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shared/n-dhcp4/src/util/packet.c \
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shared/n-dhcp4/src/util/packet.h \
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shared/n-dhcp4/src/util/socket.c \
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shared/n-dhcp4/src/util/socket.h \
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$(NULL)
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###############################################################################
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noinst_LTLIBRARIES += shared/nm-std-aux/libnm-std-aux.la
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shared_nm_std_aux_libnm_std_aux_la_CPPFLAGS = \
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@@ -1866,7 +1905,9 @@ EXTRA_DIST += \
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###############################################################################
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src_libNetworkManagerBase_la_CPPFLAGS = $(src_cppflags)
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src_libNetworkManagerBase_la_CPPFLAGS = \
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$(libsystemd_cppflags) \
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$(src_cppflags)
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src_libNetworkManagerBase_la_SOURCES = \
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\
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@@ -1920,6 +1961,7 @@ src_libNetworkManagerBase_la_SOURCES = \
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src/dhcp/nm-dhcp-client.c \
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src/dhcp/nm-dhcp-client.h \
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src/dhcp/nm-dhcp-client-logging.h \
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src/dhcp/nm-dhcp-nettools.c \
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src/dhcp/nm-dhcp-utils.c \
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src/dhcp/nm-dhcp-utils.h \
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src/dhcp/nm-dhcp-systemd.c \
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@@ -2141,6 +2183,7 @@ src_libNetworkManager_la_LIBADD = \
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src/libnm-systemd-core.la \
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shared/systemd/libnm-systemd-shared.la \
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shared/libnacd.la \
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shared/libndhcp4.la \
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shared/libcrbtree.la \
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shared/libcsiphash.la \
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$(GLIB_LIBS) \
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@@ -2228,6 +2271,7 @@ src_nm_iface_helper_LDADD = \
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shared/nm-std-aux/libnm-std-aux.la \
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src/libnm-systemd-core.la \
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shared/systemd/libnm-systemd-shared.la \
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shared/libndhcp4.la \
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shared/libcsiphash.la \
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$(GLIB_LIBS) \
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$(LIBUDEV_LIBS) \
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@@ -2275,6 +2319,7 @@ src_initrd_nm_initrd_generator_LDADD = \
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shared/systemd/libnm-systemd-shared.la \
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shared/nm-glib-aux/libnm-glib-aux.la \
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shared/nm-std-aux/libnm-std-aux.la \
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shared/libndhcp4.la \
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shared/libcsiphash.la \
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$(GLIB_LIBS) \
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$(NULL)
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@@ -181,7 +181,7 @@ next if $filename =~ /\/nm-[^\/]+-enum-types\.[ch]$/;
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next if $filename =~ /\bsrc\/systemd\//
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and not $filename =~ /\/sd-adapt\//
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and not $filename =~ /\/nm-/;
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next if $filename =~ /\/(n-acd|c-list|c-siphash)\//;
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next if $filename =~ /\/(n-acd|c-list|c-siphash|n-dhcp4)\//;
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complain ('Tabs are only allowed at the beginning of a line') if $line =~ /[^\t]\t/;
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complain ('Trailing whitespace') if $line =~ /[ \t]$/;
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@@ -53,7 +53,7 @@ option('config_dns_rc_manager_default', type: 'combo', choices: ['symlink', 'fil
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option('dhclient', type: 'string', value: '', description: 'Enable dhclient support')
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option('dhcpcanon', type: 'string', value: '', description: 'Enable dhcpcanon support (experimental)')
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option('dhcpcd', type: 'string', value: '', description: 'Enable dhcpcd support')
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option('config_dhcp_default', type: 'combo', choices: ['dhcpcanon', 'dhclient', 'dhcpcd', 'internal'], value: 'internal', description: 'Default configuration option for main.dhcp setting, used as fallback if the configuration option is unset')
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option('config_dhcp_default', type: 'combo', choices: ['dhcpcanon', 'dhclient', 'dhcpcd', 'internal', 'nettools'], value: 'internal', description: 'Default configuration option for main.dhcp setting, used as fallback if the configuration option is unset')
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# miscellaneous
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option('introspection', type: 'boolean', value: true, description: 'Enable introspection for this build')
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@@ -88,6 +88,43 @@ shared_n_acd_dep = declare_dependency(
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###############################################################################
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shared_n_dhcp4 = static_library(
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'n-dhcp4',
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sources: files('n-dhcp4/src/n-dhcp4-c-connection.c',
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'n-dhcp4/src/n-dhcp4-c-lease.c',
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'n-dhcp4/src/n-dhcp4-c-probe.c',
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'n-dhcp4/src/n-dhcp4-client.c',
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'n-dhcp4/src/n-dhcp4-incoming.c',
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'n-dhcp4/src/n-dhcp4-outgoing.c',
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'n-dhcp4/src/n-dhcp4-private.h',
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'n-dhcp4/src/n-dhcp4-socket.c',
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'n-dhcp4/src/n-dhcp4.h',
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'n-dhcp4/src/util/packet.c',
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'n-dhcp4/src/util/packet.h',
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'n-dhcp4/src/util/socket.c',
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'n-dhcp4/src/util/socket.h'),
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c_args: [
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'-D_GNU_SOURCE',
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'-Wno-declaration-after-statement',
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'-Wno-pointer-arith',
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],
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include_directories: [
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include_directories('c-list/src'),
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include_directories('c-siphash/src'),
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include_directories('c-stdaux/src'),
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],
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dependencies: [
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shared_c_siphash_dep,
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],
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)
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shared_n_dhcp4_dep = declare_dependency(
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include_directories: shared_inc,
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link_with: shared_n_dhcp4,
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)
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###############################################################################
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version_conf = configuration_data()
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version_conf.set('NM_MAJOR_VERSION', nm_major_version)
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version_conf.set('NM_MINOR_VERSION', nm_minor_version)
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@@ -213,5 +213,6 @@ extern const NMDhcpClientFactory _nm_dhcp_client_factory_dhcpcanon;
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extern const NMDhcpClientFactory _nm_dhcp_client_factory_dhclient;
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extern const NMDhcpClientFactory _nm_dhcp_client_factory_dhcpcd;
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extern const NMDhcpClientFactory _nm_dhcp_client_factory_internal;
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extern const NMDhcpClientFactory _nm_dhcp_client_factory_nettools;
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#endif /* __NETWORKMANAGER_DHCP_CLIENT_H__ */
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@@ -38,7 +38,7 @@
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/*****************************************************************************/
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const NMDhcpClientFactory *const _nm_dhcp_manager_factories[4] = {
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const NMDhcpClientFactory *const _nm_dhcp_manager_factories[5] = {
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/* the order here matters, as we will try the plugins in this order to find
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* the first available plugin. */
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@@ -52,6 +52,7 @@ const NMDhcpClientFactory *const _nm_dhcp_manager_factories[4] = {
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&_nm_dhcp_client_factory_dhcpcd,
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#endif
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&_nm_dhcp_client_factory_internal,
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&_nm_dhcp_client_factory_nettools,
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};
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/*****************************************************************************/
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@@ -84,7 +84,7 @@ NMDhcpClient * nm_dhcp_manager_start_ip6 (NMDhcpManager *manager,
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/* For testing only */
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extern const char* nm_dhcp_helper_path;
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extern const NMDhcpClientFactory *const _nm_dhcp_manager_factories[4];
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extern const NMDhcpClientFactory *const _nm_dhcp_manager_factories[5];
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void nmtst_dhcp_manager_unget (gpointer singleton_instance);
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1336
src/dhcp/nm-dhcp-nettools.c
Normal file
1336
src/dhcp/nm-dhcp-nettools.c
Normal file
File diff suppressed because it is too large
Load Diff
@@ -22,6 +22,7 @@ cflags = nm_cflags
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sources = files(
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'dhcp/nm-dhcp-client.c',
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'dhcp/nm-dhcp-manager.c',
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'dhcp/nm-dhcp-nettools.c',
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'dhcp/nm-dhcp-systemd.c',
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'dhcp/nm-dhcp-utils.c',
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'ndisc/nm-lndp-ndisc.c',
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@@ -50,6 +51,7 @@ deps = [
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libsystemd_dep,
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libudev_dep,
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libnm_core_dep,
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shared_n_dhcp4_dep,
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]
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if enable_wext
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@@ -589,8 +589,9 @@ main (int argc, char *argv[])
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/*****************************************************************************/
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const NMDhcpClientFactory *const _nm_dhcp_manager_factories[4] = {
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const NMDhcpClientFactory *const _nm_dhcp_manager_factories[5] = {
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&_nm_dhcp_client_factory_internal,
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&_nm_dhcp_client_factory_nettools,
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};
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/*****************************************************************************/
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