ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <netinet/ether.h>

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <linux/if.h>

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "networkd-link.h"

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "network-internal.h"

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "dhcp-lease-internal.h"

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersenstatic int dhcp4_route_handler(sd_rtnl *rtnl, sd_rtnl_message *m,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering void *userdata) {

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen _cleanup_link_unref_ Link *link = userdata;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int r;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering assert(link);

49699bac94d24b444274f91f85c82e6fad04d029Susant Sahani assert(link->dhcp4_messages);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen link->dhcp4_messages --;

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = sd_rtnl_message_get_errno(m);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0 && r != -EEXIST) {

db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering log_link_error(link, "could not set DHCPv4 route: %s",

d8500c53789eafefe28d4ace088bf4b912280bf9Tom Gundersen strerror(-r));

266b538958932e6fc27dfce4917336e70e17e29eTom Gundersen link_enter_failed(link);

288a74cce597f81d3ba01d8a5ca7d2ba5b654b7eRonny Chevalier }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (!link->dhcp4_messages) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering link->dhcp4_configured = true;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering link_client_handler(link);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return 1;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int link_set_dhcp_routes(Link *link) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering struct in_addr gateway;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering struct sd_dhcp_route *static_routes;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering int r, n, i;

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering assert(link);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering assert(link->dhcp_lease);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen if (r < 0 && r != -ENOENT) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_warning(link,

732b7f39a2b3b1a2af90102c6262186ae71197acRonny Chevalier "DHCP error: could not get gateway: %s",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strerror(-r));

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return r;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen struct in_addr address;

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen _cleanup_route_free_ Route *route = NULL;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering _cleanup_route_free_ Route *route_gw = NULL;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = sd_dhcp_lease_get_address(link->dhcp_lease, &address);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_warning(link,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "DHCP error: could not get address: %s",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strerror(-r));

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return r;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = route_new_dynamic(&route, RTPROT_DHCP);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_error(link,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Could not allocate route: %s",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strerror(-r));

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return r;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = route_new_dynamic(&route_gw, RTPROT_DHCP);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_error(link,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Could not allocate route: %s",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering strerror(-r));

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return r;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* The dhcp netmask may mask out the gateway. Add an explicit

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route_gw->family = AF_INET;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route_gw->dst_addr.in = gateway;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->dst_prefixlen = 32;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->prefsrc_addr.in = address;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->scope = RT_SCOPE_LINK;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->metrics = link->network->dhcp_route_metric;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = route_configure(route_gw, link, &dhcp4_route_handler);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (r < 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering log_link_warning(link,

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering "could not set host route: %s",

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering strerror(-r));

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return r;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering link->dhcp4_messages ++;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->family = AF_INET;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->in_addr.in = gateway;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->prefsrc_addr.in = address;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->metrics = link->network->dhcp_route_metric;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = route_configure(route, link, &dhcp4_route_handler);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (r < 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering log_link_warning(link,

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering "could not set routes: %s",

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering strerror(-r));

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering link_enter_failed(link);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return r;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering link->dhcp4_messages ++;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (n == -ENOENT)

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return 0;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (n < 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering log_link_warning(link,

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering "DHCP error: could not get routes: %s",

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering strerror(-n));

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return n;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering for (i = 0; i < n; i++) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering _cleanup_route_free_ Route *route = NULL;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = route_new_dynamic(&route, RTPROT_DHCP);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering if (r < 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering log_link_error(link, "Could not allocate route: %s",

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering strerror(-r));

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return r;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

a6a4f528899b1dab47408733b4a423c66ea40f7aThomas Hindoe Paaboel Andersen

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->family = AF_INET;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->in_addr.in = static_routes[i].gw_addr;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->dst_addr.in = static_routes[i].dst_addr;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->dst_prefixlen = static_routes[i].dst_prefixlen;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route->metrics = link->network->dhcp_route_metric;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = route_configure(route, link, &dhcp4_route_handler);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (r < 0) {

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering log_link_warning(link,

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering "could not set host route: %s",

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering strerror(-r));

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return r;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering link->dhcp4_messages ++;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return 0;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering}

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic int dhcp_lease_lost(Link *link) {

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering _cleanup_address_free_ Address *address = NULL;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering struct in_addr addr;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering struct in_addr netmask;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering struct in_addr gateway;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering unsigned prefixlen = 0;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering int r;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering assert(link);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering assert(link->dhcp_lease);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering log_link_warning(link, "DHCP lease lost");

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (link->network->dhcp_routes) {

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering struct sd_dhcp_route *routes;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering int n, i;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering n = sd_dhcp_lease_get_routes(link->dhcp_lease, &routes);

266b538958932e6fc27dfce4917336e70e17e29eTom Gundersen if (n >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering for (i = 0; i < n; i++) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering _cleanup_route_free_ Route *route = NULL;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = route_new_dynamic(&route, RTPROT_UNSPEC);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route->family = AF_INET;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route->in_addr.in = routes[i].gw_addr;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route->dst_addr.in = routes[i].dst_addr;

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt route->dst_prefixlen = routes[i].dst_prefixlen;

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route_drop(route, link,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering &link_route_drop_handler);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = address_new_dynamic(&address);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt if (r >= 0) {

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt _cleanup_route_free_ Route *route_gw = NULL;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering _cleanup_route_free_ Route *route = NULL;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering r = route_new_dynamic(&route_gw, RTPROT_UNSPEC);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->family = AF_INET;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->dst_addr.in = gateway;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->dst_prefixlen = 32;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering route_gw->scope = RT_SCOPE_LINK;

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering route_drop(route_gw, link,

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen &link_route_drop_handler);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

df3fb561b2df486a495a5f0bcc83168bd1860533Lennart Poettering r = route_new_dynamic(&route, RTPROT_UNSPEC);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering route->family = AF_INET;

d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen route->in_addr.in = gateway;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering route_drop(route, link,

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering &link_route_drop_handler);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen r = sd_dhcp_lease_get_address(link->dhcp_lease, &addr);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering r = sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0)

3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering prefixlen = in_addr_netmask_to_prefixlen(&netmask);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering address->family = AF_INET;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering address->in_addr.in = addr;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering address->prefixlen = prefixlen;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering address_drop(address, link, &link_address_drop_handler);

6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (link->network->dhcp_mtu) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering uint16_t mtu;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen r = sd_dhcp_lease_get_mtu(link->dhcp_lease, &mtu);

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen if (r >= 0 && link->original_mtu != mtu) {

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen r = link_set_mtu(link, link->original_mtu);

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen if (r < 0) {

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen log_link_warning(link,

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "DHCP error: could not reset MTU");

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link_enter_failed(link);

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering return r;

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering }

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering }

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen if (link->network->dhcp_hostname) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen const char *hostname = NULL;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r >= 0 && hostname) {

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen r = link_set_hostname(link, "");

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0)

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen log_link_error(link,

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "Failed to reset transient hostname");

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease);

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen link->dhcp4_configured = false;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return 0;

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen}

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int dhcp4_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen void *userdata) {

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering _cleanup_link_unref_ Link *link = userdata;

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering int r;

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering assert(link);

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering r = sd_rtnl_message_get_errno(m);

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering if (r < 0 && r != -EEXIST) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_error(link, "could not set DHCPv4 address: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link_enter_failed(link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen } else if (r >= 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* calling handler directly so take a ref */

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link_ref(link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link_get_address_handler(rtnl, m, link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link_set_dhcp_routes(link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 1;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int dhcp4_update_address(Link *link,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen struct in_addr *address,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen struct in_addr *netmask,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen uint32_t lifetime) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen _cleanup_address_free_ Address *addr = NULL;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen unsigned prefixlen;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(address);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(netmask);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(lifetime);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen prefixlen = in_addr_netmask_to_prefixlen(netmask);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = address_new_dynamic(&addr);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0)

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->family = AF_INET;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->in_addr.in.s_addr = address->s_addr;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->cinfo.ifa_prefered = lifetime;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->cinfo.ifa_valid = lifetime;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->prefixlen = prefixlen;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen addr->broadcast.s_addr = address->s_addr | ~netmask->s_addr;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* use update rather than configure so that we will update the

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = address_update(addr, link, &dhcp4_address_handler);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0)

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return 0;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen}

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int dhcp_lease_renew(sd_dhcp_client *client, Link *link) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen sd_dhcp_lease *lease;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen struct in_addr address;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen struct in_addr netmask;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(client);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(link->network);

144232a8e0ea77eed8c5a456832758681b5b3511Torstein Husebø

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = sd_dhcp_client_get_lease(client, &lease);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link, "DHCP error: no lease %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen sd_dhcp_lease_unref(link->dhcp_lease);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link->dhcp4_configured = false;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen link->dhcp_lease = lease;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = sd_dhcp_lease_get_address(lease, &address);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link, "DHCP error: no address: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = sd_dhcp_lease_get_netmask(lease, &netmask);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link, "DHCP error: no netmask: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (!link->network->dhcp_critical) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = sd_dhcp_lease_get_lifetime(link->dhcp_lease,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen &lifetime);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link,

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "DHCP error: no lifetime: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen r = dhcp4_update_address(link, &address, &netmask, lifetime);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link, "could not update IP address: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering link_enter_failed(link);

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering return r;

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering return 0;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen}

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen sd_dhcp_lease *lease;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen struct in_addr address;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen struct in_addr netmask;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen struct in_addr gateway;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen unsigned prefixlen;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen int r;

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen assert(client);

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen assert(link);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering r = sd_dhcp_client_get_lease(client, &lease);

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (r < 0) {

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen log_link_warning(link, "DHCP error: no lease: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return r;

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering }

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering r = sd_dhcp_lease_get_address(lease, &address);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r < 0) {

b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen log_link_warning(link, "DHCP error: no address: %s",

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering strerror(-r));

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return r;

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering }

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering r = sd_dhcp_lease_get_netmask(lease, &netmask);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r < 0) {

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering log_link_warning(link, "DHCP error: no netmask: %s",

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering strerror(-r));

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering return r;

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering }

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering prefixlen = in_addr_netmask_to_prefixlen(&netmask);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering r = sd_dhcp_lease_get_router(lease, &gateway);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r < 0 && r != -ENOENT) {

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen log_link_warning(link, "DHCP error: could not get gateway: %s",

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen strerror(-r));

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return r;

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen }

c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering if (r >= 0)

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering log_link_struct(link, LOG_INFO,

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering IFNAMSIZ,

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering link->ifname,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ADDRESS_FMT_VAL(address),

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering prefixlen,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ADDRESS_FMT_VAL(gateway),

1d050e1e0a7082e23ee9b31fa0b819cb332b3444Lennart Poettering "ADDRESS=%u.%u.%u.%u",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ADDRESS_FMT_VAL(address),

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "PREFIXLEN=%u",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering prefixlen,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "GATEWAY=%u.%u.%u.%u",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ADDRESS_FMT_VAL(gateway),

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering NULL);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_struct(link, LOG_INFO,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u",

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering IFNAMSIZ,

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering link->ifname,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering ADDRESS_FMT_VAL(address),

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering prefixlen,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "ADDRESS=%u.%u.%u.%u",

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering ADDRESS_FMT_VAL(address),

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering "PREFIXLEN=%u",

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering prefixlen,

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering NULL);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering link->dhcp_lease = lease;

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (link->network->dhcp_mtu) {

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering uint16_t mtu;

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering r = sd_dhcp_lease_get_mtu(lease, &mtu);

1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering if (r >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = link_set_mtu(link, mtu);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0)

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_error(link, "Failed to set MTU "

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "to %" PRIu16, mtu);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering }

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (link->network->dhcp_hostname) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering const char *hostname;

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = sd_dhcp_lease_get_hostname(lease, &hostname);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r >= 0) {

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering r = link_set_hostname(link, hostname);

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (r < 0)

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering log_link_error(link,

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering "Failed to set transient hostname to '%s'",

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering hostname);

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering }

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen }

69fb1176c403e437c4fba763ba242b540c73898fLennart Poettering

2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering if (!link->network->dhcp_critical) {

6c03d27d9f7e831194dbd8bd6bcdeef9273edb6eThomas Hindoe Paaboel Andersen r = sd_dhcp_lease_get_lifetime(link->dhcp_lease,

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering &lifetime);

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen if (r < 0) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering log_link_warning(link,

373d9f173f910d547159917401c4b1f84af85736Tom Gundersen "DHCP error: no lifetime: %s",

af5effc4220dab6c4c87a130bae7be441f6967caTom Gundersen strerror(-r));

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return r;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta }

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r = dhcp4_update_address(link, &address, &netmask, lifetime);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering log_link_warning(link, "could not update IP address: %s",

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering strerror(-r));

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering link_enter_failed(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return r;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return 0;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering}

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringstatic void dhcp4_handler(sd_dhcp_client *client, int event, void *userdata) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering Link *link = userdata;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering int r = 0;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering assert(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering assert(link->network);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering assert(link->manager);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering switch (event) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering case DHCP_EVENT_EXPIRED:

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt case DHCP_EVENT_STOP:

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt case DHCP_EVENT_IP_CHANGE:

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (link->network->dhcp_critical) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering log_link_error(link,

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering "DHCPv4 connection considered system critical, ignoring request to reconfigure it.");

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (link->dhcp_lease) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r = dhcp_lease_lost(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering link_enter_failed(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (event == DHCP_EVENT_IP_CHANGE) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r = dhcp_lease_acquired(client, link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering link_enter_failed(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering break;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering case DHCP_EVENT_RENEW:

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r = dhcp_lease_renew(client, link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering link_enter_failed(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering break;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering case DHCP_EVENT_IP_ACQUIRE:

d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen r = dhcp_lease_acquired(client, link);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (r < 0) {

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering link_enter_failed(link);

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return;

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering break;

d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen default:

d6731e4c7964ee2860d4f5abdb0b52acd7a66960Tom Gundersen if (event < 0)

2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering log_link_warning(link,

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen "DHCP error: client failed: %s",

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen strerror(-event));

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen else

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen log_link_warning(link,

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen "DHCP unknown event: %d",

1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering event);

1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering break;

1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering }

1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering

1405434b6986d3c3d6ccaaa2e472bad843cbbfa1Lennart Poettering return;

67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen}

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poetteringint dhcp4_configure(Link *link) {

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen int r;

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen assert(link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering assert(link->network);

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen assert(IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4));

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen r = sd_dhcp_client_new(&link->dhcp_client);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen return r;

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen return r;

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen

914d6c09f1a449c60c8495c179a8bbe012315ba2Tom Gundersen r = sd_dhcp_client_set_mac(link->dhcp_client,

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering (const uint8_t *) &link->mac,

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering sizeof (link->mac), ARPHRD_ETHER);

b1acce80cd60fe95f16df2f1ad23ff2ad82d08e5Lennart Poettering if (r < 0)

b1acce80cd60fe95f16df2f1ad23ff2ad82d08e5Lennart Poettering return r;

373d9f173f910d547159917401c4b1f84af85736Tom Gundersen

df3fb561b2df486a495a5f0bcc83168bd1860533Lennart Poettering r = sd_dhcp_client_set_index(link->dhcp_client, link->ifindex);

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta if (r < 0)

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta return r;

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering r = sd_dhcp_client_set_callback(link->dhcp_client, dhcp4_handler, link);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta return r;

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta r = sd_dhcp_client_set_request_broadcast(link->dhcp_client,

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta link->network->dhcp_broadcast);

af5effc4220dab6c4c87a130bae7be441f6967caTom Gundersen if (r < 0)

373d9f173f910d547159917401c4b1f84af85736Tom Gundersen return r;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering if (link->mtu) {

d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return r;

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta if (link->network->dhcp_mtu) {

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering r = sd_dhcp_client_set_request_option(link->dhcp_client,

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta DHCP_OPTION_INTERFACE_MTU);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta return r;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering if (link->network->dhcp_routes) {

db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering r = sd_dhcp_client_set_request_option(link->dhcp_client,

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering DHCP_OPTION_STATIC_ROUTE);

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering if (r < 0)

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering return r;

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering r = sd_dhcp_client_set_request_option(link->dhcp_client,

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta DHCP_OPTION_CLASSLESS_STATIC_ROUTE);

888943fc6246b2917168fff59380b58b678ba157Lennart Poettering if (r < 0)

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta return r;

db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (link->network->dhcp_sendhost) {

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta _cleanup_free_ char *hostname = NULL;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta hostname = gethostname_malloc();

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta if (!hostname)

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return -ENOMEM;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta if (!is_localhost(hostname)) {

2301cb9fdb774d0a1b3d8f5e95c5d358721ccacbLennart Poettering r = sd_dhcp_client_set_hostname(link->dhcp_client,

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta hostname);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta return r;

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta }

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta }

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta if (link->network->dhcp_vendor_class_identifier) {

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta r = sd_dhcp_client_set_vendor_class_identifier(link->dhcp_client,

0d4ad91dd4fc831c31a9775b0eadf97fea6cd7f6Alin Rauta link->network->dhcp_vendor_class_identifier);

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering if (r < 0)

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering return r;

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering }

9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering

266b538958932e6fc27dfce4917336e70e17e29eTom Gundersen return 0;

81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen}

ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering