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dhcp: inject client-id in GBytes format from NMDevice to nm_dhcp_manager_start_ip4()

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Convert the string representation of ipv4.dhcp-client-id property already in
NMDevice to a GBytes. Next, we will support more client ID modes, and we
will need the NMDevice context to generate the client id.
This commit is contained in:
Thomas Haller 2018-02-14 15:26:40 +01:00
parent 578c4af907
commit 7de078a394
6 changed files with 38 additions and 25 deletions
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21
src/devices/nm-device.c
View file

@ -48,6 +48,7 @@
#include "ndisc/nm-ndisc.h"
#include "ndisc/nm-lndp-ndisc.h"
#include "dhcp/nm-dhcp-manager.h"
#include "dhcp/nm-dhcp-utils.h"
#include "nm-act-request.h"
#include "nm-proxy-config.h"
#include "nm-ip4-config.h"
@ -6392,12 +6393,27 @@ get_dhcp_timeout (NMDevice *self, int addr_family)
return timeout ?: NM_DHCP_TIMEOUT_DEFAULT;
}
static GBytes *
dhcp4_get_client_id (NMDevice *self, NMConnection *connection)
{
NMSettingIPConfig *s_ip4;
const char *client_id;
s_ip4 = nm_connection_get_setting_ip4_config (connection);
client_id = nm_setting_ip4_config_get_dhcp_client_id (NM_SETTING_IP4_CONFIG (s_ip4));
return client_id
? nm_dhcp_utils_client_id_string_to_bytes (client_id)
: NULL;
}
static NMActStageReturn
dhcp4_start (NMDevice *self)
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
NMSettingIPConfig *s_ip4;
gs_unref_bytes GBytes *hwaddr = NULL;
gs_unref_bytes GBytes *client_id = NULL;
NMConnection *connection;
connection = nm_device_get_applied_connection (self);
@ -6412,7 +6428,8 @@ dhcp4_start (NMDevice *self)
hwaddr = nm_platform_link_get_address_as_bytes (nm_device_get_platform (self),
nm_device_get_ip_ifindex (self));
/* Begin DHCP on the interface */
client_id = dhcp4_get_client_id (self, connection);
g_warn_if_fail (priv->dhcp4.client == NULL);
priv->dhcp4.client = nm_dhcp_manager_start_ip4 (nm_dhcp_manager_get (),
nm_netns_get_multi_idx (nm_device_get_netns (self)),
@ -6425,7 +6442,7 @@ dhcp4_start (NMDevice *self)
nm_setting_ip_config_get_dhcp_send_hostname (s_ip4),
nm_setting_ip_config_get_dhcp_hostname (s_ip4),
nm_setting_ip4_config_get_dhcp_fqdn (NM_SETTING_IP4_CONFIG (s_ip4)),
nm_setting_ip4_config_get_dhcp_client_id (NM_SETTING_IP4_CONFIG (s_ip4)),
client_id,
get_dhcp_timeout (self, AF_INET),
priv->dhcp_anycast_address,
NULL);

18
src/dhcp/nm-dhcp-client.c
View file

@ -239,20 +239,6 @@ nm_dhcp_client_set_client_id_bin (NMDhcpClient *self,
_set_client_id (self, b, TRUE);
}
void
nm_dhcp_client_set_client_id_str (NMDhcpClient *self,
const char *dhcp_client_id)
{
g_return_if_fail (NM_IS_DHCP_CLIENT (self));
g_return_if_fail (!dhcp_client_id || dhcp_client_id[0]);
_set_client_id (self,
dhcp_client_id
? nm_dhcp_utils_client_id_string_to_bytes (dhcp_client_id)
: NULL,
TRUE);
}
const char *
nm_dhcp_client_get_hostname (NMDhcpClient *self)
{
@ -500,7 +486,7 @@ nm_dhcp_client_watch_child (NMDhcpClient *self, pid_t pid)
gboolean
nm_dhcp_client_start_ip4 (NMDhcpClient *self,
const char *dhcp_client_id,
GBytes *client_id,
const char *dhcp_anycast_addr,
const char *hostname,
const char *last_ip4_address)
@ -519,7 +505,7 @@ nm_dhcp_client_start_ip4 (NMDhcpClient *self,
else
_LOGI ("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout);
nm_dhcp_client_set_client_id_str (self, dhcp_client_id);
nm_dhcp_client_set_client_id (self, client_id);
g_clear_pointer (&priv->hostname, g_free);
priv->hostname = g_strdup (hostname);

4
src/dhcp/nm-dhcp-client.h
View file

@ -144,7 +144,7 @@ gboolean nm_dhcp_client_get_info_only (NMDhcpClient *self);
gboolean nm_dhcp_client_get_use_fqdn (NMDhcpClient *self);
gboolean nm_dhcp_client_start_ip4 (NMDhcpClient *self,
const char *dhcp_client_id,
GBytes *client_id,
const char *dhcp_anycast_addr,
const char *hostname,
const char *last_ip4_address);
@ -185,8 +185,6 @@ void nm_dhcp_client_set_client_id_bin (NMDhcpClient *self,
guint8 type,
const guint8 *client_id,
gsize len);
void nm_dhcp_client_set_client_id_str (NMDhcpClient *self,
const char *dhcp_client_id);
/*****************************************************************************
* Client data

5
src/dhcp/nm-dhcp-manager.c
View file

@ -163,7 +163,7 @@ client_start (NMDhcpManager *self,
guint32 route_table,
guint32 route_metric,
const struct in6_addr *ipv6_ll_addr,
const char *dhcp_client_id,
GBytes *dhcp_client_id,
guint32 timeout,
const char *dhcp_anycast_addr,
const char *hostname,
@ -181,6 +181,7 @@ client_start (NMDhcpManager *self,
g_return_val_if_fail (NM_IS_DHCP_MANAGER (self), NULL);
g_return_val_if_fail (ifindex > 0, NULL);
g_return_val_if_fail (uuid != NULL, NULL);
g_return_val_if_fail (!dhcp_client_id || g_bytes_get_size (dhcp_client_id) >= 2, NULL);
priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
@ -240,7 +241,7 @@ nm_dhcp_manager_start_ip4 (NMDhcpManager *self,
gboolean send_hostname,
const char *dhcp_hostname,
const char *dhcp_fqdn,
const char *dhcp_client_id,
GBytes *dhcp_client_id,
guint32 timeout,
const char *dhcp_anycast_addr,
const char *last_ip_address)

2
src/dhcp/nm-dhcp-manager.h
View file

@ -56,7 +56,7 @@ NMDhcpClient * nm_dhcp_manager_start_ip4 (NMDhcpManager *manager,
gboolean send_hostname,
const char *dhcp_hostname,
const char *dhcp_fqdn,
const char *dhcp_client_id,
GBytes *dhcp_client_id,
guint32 timeout,
const char *dhcp_anycast_addr,
const char *last_ip_address);

13
src/nm-iface-helper.c
View file

@ -341,6 +341,7 @@ main (int argc, char *argv[])
gs_unref_object NMDhcpClient *dhcp4_client = NULL;
gs_unref_object NMNDisc *ndisc = NULL;
gs_unref_bytes GBytes *hwaddr = NULL;
gs_unref_bytes GBytes *client_id = NULL;
gs_free NMUtilsIPv6IfaceId *iid = NULL;
guint sd_id;
char sysctl_path_buf[NM_UTILS_SYSCTL_IP_CONF_PATH_BUFSIZE];
@ -441,6 +442,16 @@ main (int argc, char *argv[])
iid = g_bytes_unref_to_data (bytes, &ignored);
}
if (global_opt.dhcp4_clientid) {
/* this string is just a plain hex-string. Unlike ipv4.dhcp-client-id, which
* is parsed via nm_dhcp_utils_client_id_string_to_bytes(). */
client_id = nm_utils_hexstr2bin (global_opt.dhcp4_clientid);
if (!client_id || g_bytes_get_size (client_id) < 2) {
fprintf (stderr, _("(%s): Invalid DHCP client-id %s\n"), global_opt.ifname, global_opt.dhcp4_clientid);
return 1;
}
}
if (global_opt.dhcp4_address) {
nm_platform_sysctl_set (NM_PLATFORM_GET, NMP_SYSCTL_PATHID_ABSOLUTE (nm_utils_sysctl_ip_conf_path (AF_INET, sysctl_path_buf, global_opt.ifname, "promote_secondaries")), "1");
@ -455,7 +466,7 @@ main (int argc, char *argv[])
!!global_opt.dhcp4_hostname,
global_opt.dhcp4_hostname,
global_opt.dhcp4_fqdn,
global_opt.dhcp4_clientid,
client_id,
NM_DHCP_TIMEOUT_DEFAULT,
NULL,
global_opt.dhcp4_address);