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Diffstat (limited to 'src/libsystemd-network/sd-dhcp-lease.c')
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c1176
1 files changed, 0 insertions, 1176 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
deleted file mode 100644
index 8387b185c0..0000000000
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ /dev/null
@@ -1,1176 +0,0 @@
-/***
- This file is part of systemd.
-
- Copyright (C) 2013 Intel Corporation. All rights reserved.
- Copyright (C) 2014 Tom Gundersen
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <arpa/inet.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "sd-dhcp-lease.h"
-
-#include "alloc-util.h"
-#include "dhcp-lease-internal.h"
-#include "dhcp-protocol.h"
-#include "dns-domain.h"
-#include "fd-util.h"
-#include "fileio.h"
-#include "hexdecoct.h"
-#include "hostname-util.h"
-#include "in-addr-util.h"
-#include "network-internal.h"
-#include "parse-util.h"
-#include "stdio-util.h"
-#include "string-util.h"
-#include "unaligned.h"
-
-int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->address == 0)
- return -ENODATA;
-
- addr->s_addr = lease->address;
- return 0;
-}
-
-int sd_dhcp_lease_get_broadcast(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (!lease->have_broadcast)
- return -ENODATA;
-
- addr->s_addr = lease->broadcast;
- return 0;
-}
-
-int sd_dhcp_lease_get_lifetime(sd_dhcp_lease *lease, uint32_t *lifetime) {
- assert_return(lease, -EINVAL);
- assert_return(lifetime, -EINVAL);
-
- if (lease->lifetime <= 0)
- return -ENODATA;
-
- *lifetime = lease->lifetime;
- return 0;
-}
-
-int sd_dhcp_lease_get_t1(sd_dhcp_lease *lease, uint32_t *t1) {
- assert_return(lease, -EINVAL);
- assert_return(t1, -EINVAL);
-
- if (lease->t1 <= 0)
- return -ENODATA;
-
- *t1 = lease->t1;
- return 0;
-}
-
-int sd_dhcp_lease_get_t2(sd_dhcp_lease *lease, uint32_t *t2) {
- assert_return(lease, -EINVAL);
- assert_return(t2, -EINVAL);
-
- if (lease->t2 <= 0)
- return -ENODATA;
-
- *t2 = lease->t2;
- return 0;
-}
-
-int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu) {
- assert_return(lease, -EINVAL);
- assert_return(mtu, -EINVAL);
-
- if (lease->mtu <= 0)
- return -ENODATA;
-
- *mtu = lease->mtu;
- return 0;
-}
-
-int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, const struct in_addr **addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->dns_size <= 0)
- return -ENODATA;
-
- *addr = lease->dns;
- return (int) lease->dns_size;
-}
-
-int sd_dhcp_lease_get_ntp(sd_dhcp_lease *lease, const struct in_addr **addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->ntp_size <= 0)
- return -ENODATA;
-
- *addr = lease->ntp;
- return (int) lease->ntp_size;
-}
-
-int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname) {
- assert_return(lease, -EINVAL);
- assert_return(domainname, -EINVAL);
-
- if (!lease->domainname)
- return -ENODATA;
-
- *domainname = lease->domainname;
- return 0;
-}
-
-int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname) {
- assert_return(lease, -EINVAL);
- assert_return(hostname, -EINVAL);
-
- if (!lease->hostname)
- return -ENODATA;
-
- *hostname = lease->hostname;
- return 0;
-}
-
-int sd_dhcp_lease_get_root_path(sd_dhcp_lease *lease, const char **root_path) {
- assert_return(lease, -EINVAL);
- assert_return(root_path, -EINVAL);
-
- if (!lease->root_path)
- return -ENODATA;
-
- *root_path = lease->root_path;
- return 0;
-}
-
-int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->router == 0)
- return -ENODATA;
-
- addr->s_addr = lease->router;
- return 0;
-}
-
-int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (!lease->have_subnet_mask)
- return -ENODATA;
-
- addr->s_addr = lease->subnet_mask;
- return 0;
-}
-
-int sd_dhcp_lease_get_server_identifier(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->server_address == 0)
- return -ENODATA;
-
- addr->s_addr = lease->server_address;
- return 0;
-}
-
-int sd_dhcp_lease_get_next_server(sd_dhcp_lease *lease, struct in_addr *addr) {
- assert_return(lease, -EINVAL);
- assert_return(addr, -EINVAL);
-
- if (lease->next_server == 0)
- return -ENODATA;
-
- addr->s_addr = lease->next_server;
- return 0;
-}
-
-/*
- * The returned routes array must be freed by the caller.
- * Route objects have the same lifetime of the lease and must not be freed.
- */
-int sd_dhcp_lease_get_routes(sd_dhcp_lease *lease, sd_dhcp_route ***routes) {
- sd_dhcp_route **ret;
- unsigned i;
-
- assert_return(lease, -EINVAL);
- assert_return(routes, -EINVAL);
-
- if (lease->static_route_size <= 0)
- return -ENODATA;
-
- ret = new(sd_dhcp_route *, lease->static_route_size);
- if (!ret)
- return -ENOMEM;
-
- for (i = 0; i < lease->static_route_size; i++)
- ret[i] = &lease->static_route[i];
-
- *routes = ret;
- return (int) lease->static_route_size;
-}
-
-int sd_dhcp_lease_get_vendor_specific(sd_dhcp_lease *lease, const void **data, size_t *data_len) {
- assert_return(lease, -EINVAL);
- assert_return(data, -EINVAL);
- assert_return(data_len, -EINVAL);
-
- if (lease->vendor_specific_len <= 0)
- return -ENODATA;
-
- *data = lease->vendor_specific;
- *data_len = lease->vendor_specific_len;
- return 0;
-}
-
-sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease) {
-
- if (!lease)
- return NULL;
-
- assert(lease->n_ref >= 1);
- lease->n_ref++;
-
- return lease;
-}
-
-sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease) {
-
- if (!lease)
- return NULL;
-
- assert(lease->n_ref >= 1);
- lease->n_ref--;
-
- if (lease->n_ref > 0)
- return NULL;
-
- while (lease->private_options) {
- struct sd_dhcp_raw_option *option = lease->private_options;
-
- LIST_REMOVE(options, lease->private_options, option);
-
- free(option->data);
- free(option);
- }
-
- free(lease->hostname);
- free(lease->domainname);
- free(lease->dns);
- free(lease->ntp);
- free(lease->static_route);
- free(lease->client_id);
- free(lease->vendor_specific);
- return mfree(lease);
-}
-
-static int lease_parse_u32(const uint8_t *option, size_t len, uint32_t *ret, uint32_t min) {
- assert(option);
- assert(ret);
-
- if (len != 4)
- return -EINVAL;
-
- *ret = unaligned_read_be32((be32_t*) option);
- if (*ret < min)
- *ret = min;
-
- return 0;
-}
-
-static int lease_parse_u16(const uint8_t *option, size_t len, uint16_t *ret, uint16_t min) {
- assert(option);
- assert(ret);
-
- if (len != 2)
- return -EINVAL;
-
- *ret = unaligned_read_be16((be16_t*) option);
- if (*ret < min)
- *ret = min;
-
- return 0;
-}
-
-static int lease_parse_be32(const uint8_t *option, size_t len, be32_t *ret) {
- assert(option);
- assert(ret);
-
- if (len != 4)
- return -EINVAL;
-
- memcpy(ret, option, 4);
- return 0;
-}
-
-static int lease_parse_string(const uint8_t *option, size_t len, char **ret) {
- assert(option);
- assert(ret);
-
- if (len <= 0)
- *ret = mfree(*ret);
- else {
- char *string;
-
- /*
- * One trailing NUL byte is OK, we don't mind. See:
- * https://github.com/systemd/systemd/issues/1337
- */
- if (memchr(option, 0, len - 1))
- return -EINVAL;
-
- string = strndup((const char *) option, len);
- if (!string)
- return -ENOMEM;
-
- free(*ret);
- *ret = string;
- }
-
- return 0;
-}
-
-static int lease_parse_domain(const uint8_t *option, size_t len, char **ret) {
- _cleanup_free_ char *name = NULL, *normalized = NULL;
- int r;
-
- assert(option);
- assert(ret);
-
- r = lease_parse_string(option, len, &name);
- if (r < 0)
- return r;
- if (!name) {
- *ret = mfree(*ret);
- return 0;
- }
-
- r = dns_name_normalize(name, &normalized);
- if (r < 0)
- return r;
-
- if (is_localhost(normalized))
- return -EINVAL;
-
- if (dns_name_is_root(normalized))
- return -EINVAL;
-
- free(*ret);
- *ret = normalized;
- normalized = NULL;
-
- return 0;
-}
-
-static int lease_parse_in_addrs(const uint8_t *option, size_t len, struct in_addr **ret, size_t *n_ret) {
- assert(option);
- assert(ret);
- assert(n_ret);
-
- if (len <= 0) {
- *ret = mfree(*ret);
- *n_ret = 0;
- } else {
- size_t n_addresses;
- struct in_addr *addresses;
-
- if (len % 4 != 0)
- return -EINVAL;
-
- n_addresses = len / 4;
-
- addresses = newdup(struct in_addr, option, n_addresses);
- if (!addresses)
- return -ENOMEM;
-
- free(*ret);
- *ret = addresses;
- *n_ret = n_addresses;
- }
-
- return 0;
-}
-
-static int lease_parse_routes(
- const uint8_t *option, size_t len,
- struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) {
-
- struct in_addr addr;
-
- assert(option || len <= 0);
- assert(routes);
- assert(routes_size);
- assert(routes_allocated);
-
- if (len <= 0)
- return 0;
-
- if (len % 8 != 0)
- return -EINVAL;
-
- if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + (len / 8)))
- return -ENOMEM;
-
- while (len >= 8) {
- struct sd_dhcp_route *route = *routes + *routes_size;
- int r;
-
- r = in_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen);
- if (r < 0) {
- log_debug("Failed to determine destination prefix length from class based IP, ignoring");
- continue;
- }
-
- assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0);
- route->dst_addr = inet_makeaddr(inet_netof(addr), 0);
- option += 4;
-
- assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0);
- option += 4;
-
- len -= 8;
- (*routes_size)++;
- }
-
- return 0;
-}
-
-/* parses RFC3442 Classless Static Route Option */
-static int lease_parse_classless_routes(
- const uint8_t *option, size_t len,
- struct sd_dhcp_route **routes, size_t *routes_size, size_t *routes_allocated) {
-
- assert(option || len <= 0);
- assert(routes);
- assert(routes_size);
- assert(routes_allocated);
-
- if (len <= 0)
- return 0;
-
- /* option format: (subnet-mask-width significant-subnet-octets gateway-ip)* */
-
- while (len > 0) {
- uint8_t dst_octets;
- struct sd_dhcp_route *route;
-
- if (!GREEDY_REALLOC(*routes, *routes_allocated, *routes_size + 1))
- return -ENOMEM;
-
- route = *routes + *routes_size;
-
- dst_octets = (*option == 0 ? 0 : ((*option - 1) / 8) + 1);
- route->dst_prefixlen = *option;
- option++;
- len--;
-
- /* can't have more than 4 octets in IPv4 */
- if (dst_octets > 4 || len < dst_octets)
- return -EINVAL;
-
- route->dst_addr.s_addr = 0;
- memcpy(&route->dst_addr.s_addr, option, dst_octets);
- option += dst_octets;
- len -= dst_octets;
-
- if (len < 4)
- return -EINVAL;
-
- assert_se(lease_parse_be32(option, 4, &route->gw_addr.s_addr) >= 0);
- option += 4;
- len -= 4;
-
- (*routes_size)++;
- }
-
- return 0;
-}
-
-int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata) {
- sd_dhcp_lease *lease = userdata;
- int r;
-
- assert(lease);
-
- switch(code) {
-
- case SD_DHCP_OPTION_IP_ADDRESS_LEASE_TIME:
- r = lease_parse_u32(option, len, &lease->lifetime, 1);
- if (r < 0)
- log_debug_errno(r, "Failed to parse lease time, ignoring: %m");
-
- break;
-
- case SD_DHCP_OPTION_SERVER_IDENTIFIER:
- r = lease_parse_be32(option, len, &lease->server_address);
- if (r < 0)
- log_debug_errno(r, "Failed to parse server identifier, ignoring: %m");
-
- break;
-
- case SD_DHCP_OPTION_SUBNET_MASK:
- r = lease_parse_be32(option, len, &lease->subnet_mask);
- if (r < 0)
- log_debug_errno(r, "Failed to parse subnet mask, ignoring: %m");
- else
- lease->have_subnet_mask = true;
- break;
-
- case SD_DHCP_OPTION_BROADCAST:
- r = lease_parse_be32(option, len, &lease->broadcast);
- if (r < 0)
- log_debug_errno(r, "Failed to parse broadcast address, ignoring: %m");
- else
- lease->have_broadcast = true;
- break;
-
- case SD_DHCP_OPTION_ROUTER:
- if (len >= 4) {
- r = lease_parse_be32(option, 4, &lease->router);
- if (r < 0)
- log_debug_errno(r, "Failed to parse router address, ignoring: %m");
- }
- break;
-
- case SD_DHCP_OPTION_DOMAIN_NAME_SERVER:
- r = lease_parse_in_addrs(option, len, &lease->dns, &lease->dns_size);
- if (r < 0)
- log_debug_errno(r, "Failed to parse DNS server, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_NTP_SERVER:
- r = lease_parse_in_addrs(option, len, &lease->ntp, &lease->ntp_size);
- if (r < 0)
- log_debug_errno(r, "Failed to parse NTP server, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_STATIC_ROUTE:
- r = lease_parse_routes(option, len, &lease->static_route, &lease->static_route_size, &lease->static_route_allocated);
- if (r < 0)
- log_debug_errno(r, "Failed to parse static routes, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_INTERFACE_MTU:
- r = lease_parse_u16(option, len, &lease->mtu, 68);
- if (r < 0)
- log_debug_errno(r, "Failed to parse MTU, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_DOMAIN_NAME:
- r = lease_parse_domain(option, len, &lease->domainname);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse domain name, ignoring: %m");
- return 0;
- }
-
- break;
-
- case SD_DHCP_OPTION_HOST_NAME:
- r = lease_parse_domain(option, len, &lease->hostname);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse host name, ignoring: %m");
- return 0;
- }
-
- break;
-
- case SD_DHCP_OPTION_ROOT_PATH:
- r = lease_parse_string(option, len, &lease->root_path);
- if (r < 0)
- log_debug_errno(r, "Failed to parse root path, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_RENEWAL_T1_TIME:
- r = lease_parse_u32(option, len, &lease->t1, 1);
- if (r < 0)
- log_debug_errno(r, "Failed to parse T1 time, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_REBINDING_T2_TIME:
- r = lease_parse_u32(option, len, &lease->t2, 1);
- if (r < 0)
- log_debug_errno(r, "Failed to parse T2 time, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE:
- r = lease_parse_classless_routes(
- option, len,
- &lease->static_route,
- &lease->static_route_size,
- &lease->static_route_allocated);
- if (r < 0)
- log_debug_errno(r, "Failed to parse classless routes, ignoring: %m");
- break;
-
- case SD_DHCP_OPTION_NEW_TZDB_TIMEZONE: {
- _cleanup_free_ char *tz = NULL;
-
- r = lease_parse_string(option, len, &tz);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse timezone option, ignoring: %m");
- return 0;
- }
-
- if (!timezone_is_valid(tz)) {
- log_debug_errno(r, "Timezone is not valid, ignoring: %m");
- return 0;
- }
-
- free(lease->timezone);
- lease->timezone = tz;
- tz = NULL;
-
- break;
- }
-
- case SD_DHCP_OPTION_VENDOR_SPECIFIC:
-
- if (len <= 0)
- lease->vendor_specific = mfree(lease->vendor_specific);
- else {
- void *p;
-
- p = memdup(option, len);
- if (!p)
- return -ENOMEM;
-
- free(lease->vendor_specific);
- lease->vendor_specific = p;
- }
-
- lease->vendor_specific_len = len;
- break;
-
- case SD_DHCP_OPTION_PRIVATE_BASE ... SD_DHCP_OPTION_PRIVATE_LAST:
- r = dhcp_lease_insert_private_option(lease, code, option, len);
- if (r < 0)
- return r;
-
- break;
-
- default:
- log_debug("Ignoring option DHCP option %"PRIu8" while parsing.", code);
- break;
- }
-
- return 0;
-}
-
-int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len) {
- struct sd_dhcp_raw_option *cur, *option;
-
- assert(lease);
-
- LIST_FOREACH(options, cur, lease->private_options) {
- if (tag < cur->tag)
- break;
- if (tag == cur->tag) {
- log_debug("Ignoring duplicate option, tagged %i.", tag);
- return 0;
- }
- }
-
- option = new(struct sd_dhcp_raw_option, 1);
- if (!option)
- return -ENOMEM;
-
- option->tag = tag;
- option->length = len;
- option->data = memdup(data, len);
- if (!option->data) {
- free(option);
- return -ENOMEM;
- }
-
- LIST_INSERT_BEFORE(options, lease->private_options, cur, option);
- return 0;
-}
-
-int dhcp_lease_new(sd_dhcp_lease **ret) {
- sd_dhcp_lease *lease;
-
- lease = new0(sd_dhcp_lease, 1);
- if (!lease)
- return -ENOMEM;
-
- lease->router = INADDR_ANY;
- lease->n_ref = 1;
-
- *ret = lease;
- return 0;
-}
-
-int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
- _cleanup_free_ char *temp_path = NULL;
- _cleanup_fclose_ FILE *f = NULL;
- struct sd_dhcp_raw_option *option;
- struct in_addr address;
- const struct in_addr *addresses;
- const void *client_id, *data;
- size_t client_id_len, data_len;
- const char *string;
- uint16_t mtu;
- _cleanup_free_ sd_dhcp_route **routes = NULL;
- uint32_t t1, t2, lifetime;
- int r;
-
- assert(lease);
- assert(lease_file);
-
- r = fopen_temporary(lease_file, &f, &temp_path);
- if (r < 0)
- goto fail;
-
- fchmod(fileno(f), 0644);
-
- fprintf(f,
- "# This is private data. Do not parse.\n");
-
- r = sd_dhcp_lease_get_address(lease, &address);
- if (r >= 0)
- fprintf(f, "ADDRESS=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_netmask(lease, &address);
- if (r >= 0)
- fprintf(f, "NETMASK=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_router(lease, &address);
- if (r >= 0)
- fprintf(f, "ROUTER=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_server_identifier(lease, &address);
- if (r >= 0)
- fprintf(f, "SERVER_ADDRESS=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_next_server(lease, &address);
- if (r >= 0)
- fprintf(f, "NEXT_SERVER=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_broadcast(lease, &address);
- if (r >= 0)
- fprintf(f, "BROADCAST=%s\n", inet_ntoa(address));
-
- r = sd_dhcp_lease_get_mtu(lease, &mtu);
- if (r >= 0)
- fprintf(f, "MTU=%" PRIu16 "\n", mtu);
-
- r = sd_dhcp_lease_get_t1(lease, &t1);
- if (r >= 0)
- fprintf(f, "T1=%" PRIu32 "\n", t1);
-
- r = sd_dhcp_lease_get_t2(lease, &t2);
- if (r >= 0)
- fprintf(f, "T2=%" PRIu32 "\n", t2);
-
- r = sd_dhcp_lease_get_lifetime(lease, &lifetime);
- if (r >= 0)
- fprintf(f, "LIFETIME=%" PRIu32 "\n", lifetime);
-
- r = sd_dhcp_lease_get_dns(lease, &addresses);
- if (r > 0) {
- fputs("DNS=", f);
- serialize_in_addrs(f, addresses, r);
- fputs("\n", f);
- }
-
- r = sd_dhcp_lease_get_ntp(lease, &addresses);
- if (r > 0) {
- fputs("NTP=", f);
- serialize_in_addrs(f, addresses, r);
- fputs("\n", f);
- }
-
- r = sd_dhcp_lease_get_domainname(lease, &string);
- if (r >= 0)
- fprintf(f, "DOMAINNAME=%s\n", string);
-
- r = sd_dhcp_lease_get_hostname(lease, &string);
- if (r >= 0)
- fprintf(f, "HOSTNAME=%s\n", string);
-
- r = sd_dhcp_lease_get_root_path(lease, &string);
- if (r >= 0)
- fprintf(f, "ROOT_PATH=%s\n", string);
-
- r = sd_dhcp_lease_get_routes(lease, &routes);
- if (r > 0)
- serialize_dhcp_routes(f, "ROUTES", routes, r);
-
- r = sd_dhcp_lease_get_timezone(lease, &string);
- if (r >= 0)
- fprintf(f, "TIMEZONE=%s\n", string);
-
- r = sd_dhcp_lease_get_client_id(lease, &client_id, &client_id_len);
- if (r >= 0) {
- _cleanup_free_ char *client_id_hex = NULL;
-
- client_id_hex = hexmem(client_id, client_id_len);
- if (!client_id_hex) {
- r = -ENOMEM;
- goto fail;
- }
- fprintf(f, "CLIENTID=%s\n", client_id_hex);
- }
-
- r = sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len);
- if (r >= 0) {
- _cleanup_free_ char *option_hex = NULL;
-
- option_hex = hexmem(data, data_len);
- if (!option_hex) {
- r = -ENOMEM;
- goto fail;
- }
- fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex);
- }
-
- LIST_FOREACH(options, option, lease->private_options) {
- char key[strlen("OPTION_000")+1];
-
- xsprintf(key, "OPTION_%" PRIu8, option->tag);
- r = serialize_dhcp_option(f, key, option->data, option->length);
- if (r < 0)
- goto fail;
- }
-
- r = fflush_and_check(f);
- if (r < 0)
- goto fail;
-
- if (rename(temp_path, lease_file) < 0) {
- r = -errno;
- goto fail;
- }
-
- return 0;
-
-fail:
- if (temp_path)
- (void) unlink(temp_path);
-
- return log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
-}
-
-int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
-
- _cleanup_(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
- _cleanup_free_ char
- *address = NULL,
- *router = NULL,
- *netmask = NULL,
- *server_address = NULL,
- *next_server = NULL,
- *broadcast = NULL,
- *dns = NULL,
- *ntp = NULL,
- *mtu = NULL,
- *routes = NULL,
- *client_id_hex = NULL,
- *vendor_specific_hex = NULL,
- *lifetime = NULL,
- *t1 = NULL,
- *t2 = NULL,
- *options[SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE + 1] = {};
-
- int r, i;
-
- assert(lease_file);
- assert(ret);
-
- r = dhcp_lease_new(&lease);
- if (r < 0)
- return r;
-
- r = parse_env_file(lease_file, NEWLINE,
- "ADDRESS", &address,
- "ROUTER", &router,
- "NETMASK", &netmask,
- "SERVER_IDENTIFIER", &server_address,
- "NEXT_SERVER", &next_server,
- "BROADCAST", &broadcast,
- "DNS", &dns,
- "NTP", &ntp,
- "MTU", &mtu,
- "DOMAINNAME", &lease->domainname,
- "HOSTNAME", &lease->hostname,
- "ROOT_PATH", &lease->root_path,
- "ROUTES", &routes,
- "CLIENTID", &client_id_hex,
- "TIMEZONE", &lease->timezone,
- "VENDOR_SPECIFIC", &vendor_specific_hex,
- "LIFETIME", &lifetime,
- "T1", &t1,
- "T2", &t2,
- "OPTION_224", &options[0],
- "OPTION_225", &options[1],
- "OPTION_226", &options[2],
- "OPTION_227", &options[3],
- "OPTION_228", &options[4],
- "OPTION_229", &options[5],
- "OPTION_230", &options[6],
- "OPTION_231", &options[7],
- "OPTION_232", &options[8],
- "OPTION_233", &options[9],
- "OPTION_234", &options[10],
- "OPTION_235", &options[11],
- "OPTION_236", &options[12],
- "OPTION_237", &options[13],
- "OPTION_238", &options[14],
- "OPTION_239", &options[15],
- "OPTION_240", &options[16],
- "OPTION_241", &options[17],
- "OPTION_242", &options[18],
- "OPTION_243", &options[19],
- "OPTION_244", &options[20],
- "OPTION_245", &options[21],
- "OPTION_246", &options[22],
- "OPTION_247", &options[23],
- "OPTION_248", &options[24],
- "OPTION_249", &options[25],
- "OPTION_250", &options[26],
- "OPTION_251", &options[27],
- "OPTION_252", &options[28],
- "OPTION_253", &options[29],
- "OPTION_254", &options[30],
- NULL);
- if (r < 0)
- return r;
-
- if (address) {
- r = inet_pton(AF_INET, address, &lease->address);
- if (r <= 0)
- log_debug("Failed to parse address %s, ignoring.", address);
- }
-
- if (router) {
- r = inet_pton(AF_INET, router, &lease->router);
- if (r <= 0)
- log_debug("Failed to parse router %s, ignoring.", router);
- }
-
- if (netmask) {
- r = inet_pton(AF_INET, netmask, &lease->subnet_mask);
- if (r <= 0)
- log_debug("Failed to parse netmask %s, ignoring.", netmask);
- else
- lease->have_subnet_mask = true;
- }
-
- if (server_address) {
- r = inet_pton(AF_INET, server_address, &lease->server_address);
- if (r <= 0)
- log_debug("Failed to parse server address %s, ignoring.", server_address);
- }
-
- if (next_server) {
- r = inet_pton(AF_INET, next_server, &lease->next_server);
- if (r <= 0)
- log_debug("Failed to parse next server %s, ignoring.", next_server);
- }
-
- if (broadcast) {
- r = inet_pton(AF_INET, broadcast, &lease->broadcast);
- if (r <= 0)
- log_debug("Failed to parse broadcast address %s, ignoring.", broadcast);
- else
- lease->have_broadcast = true;
- }
-
- if (dns) {
- r = deserialize_in_addrs(&lease->dns, dns);
- if (r < 0)
- log_debug_errno(r, "Failed to deserialize DNS servers %s, ignoring: %m", dns);
- else
- lease->dns_size = r;
- }
-
- if (ntp) {
- r = deserialize_in_addrs(&lease->ntp, ntp);
- if (r < 0)
- log_debug_errno(r, "Failed to deserialize NTP servers %s, ignoring: %m", ntp);
- else
- lease->ntp_size = r;
- }
-
- if (mtu) {
- r = safe_atou16(mtu, &lease->mtu);
- if (r < 0)
- log_debug_errno(r, "Failed to parse MTU %s, ignoring: %m", mtu);
- }
-
- if (routes) {
- r = deserialize_dhcp_routes(
- &lease->static_route,
- &lease->static_route_size,
- &lease->static_route_allocated,
- routes);
- if (r < 0)
- log_debug_errno(r, "Failed to parse DHCP routes %s, ignoring: %m", routes);
- }
-
- if (lifetime) {
- r = safe_atou32(lifetime, &lease->lifetime);
- if (r < 0)
- log_debug_errno(r, "Failed to parse lifetime %s, ignoring: %m", lifetime);
- }
-
- if (t1) {
- r = safe_atou32(t1, &lease->t1);
- if (r < 0)
- log_debug_errno(r, "Failed to parse T1 %s, ignoring: %m", t1);
- }
-
- if (t2) {
- r = safe_atou32(t2, &lease->t2);
- if (r < 0)
- log_debug_errno(r, "Failed to parse T2 %s, ignoring: %m", t2);
- }
-
- if (client_id_hex) {
- r = deserialize_dhcp_option(&lease->client_id, &lease->client_id_len, client_id_hex);
- if (r < 0)
- log_debug_errno(r, "Failed to parse client ID %s, ignoring: %m", client_id_hex);
- }
-
- if (vendor_specific_hex) {
- r = deserialize_dhcp_option(&lease->vendor_specific, &lease->vendor_specific_len, vendor_specific_hex);
- if (r < 0)
- log_debug_errno(r, "Failed to parse vendor specific data %s, ignoring: %m", vendor_specific_hex);
- }
-
- for (i = 0; i <= SD_DHCP_OPTION_PRIVATE_LAST - SD_DHCP_OPTION_PRIVATE_BASE; i++) {
- _cleanup_free_ void *data = NULL;
- size_t len;
-
- if (!options[i])
- continue;
-
- r = deserialize_dhcp_option(&data, &len, options[i]);
- if (r < 0) {
- log_debug_errno(r, "Failed to parse private DHCP option %s, ignoring: %m", options[i]);
- continue;
- }
-
- r = dhcp_lease_insert_private_option(lease, SD_DHCP_OPTION_PRIVATE_BASE + i, data, len);
- if (r < 0)
- return r;
- }
-
- *ret = lease;
- lease = NULL;
-
- return 0;
-}
-
-int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease) {
- struct in_addr address, mask;
- int r;
-
- assert(lease);
-
- if (lease->address == 0)
- return -ENODATA;
-
- address.s_addr = lease->address;
-
- /* fall back to the default subnet masks based on address class */
- r = in_addr_default_subnet_mask(&address, &mask);
- if (r < 0)
- return r;
-
- lease->subnet_mask = mask.s_addr;
- lease->have_subnet_mask = true;
-
- return 0;
-}
-
-int sd_dhcp_lease_get_client_id(sd_dhcp_lease *lease, const void **client_id, size_t *client_id_len) {
- assert_return(lease, -EINVAL);
- assert_return(client_id, -EINVAL);
- assert_return(client_id_len, -EINVAL);
-
- if (!lease->client_id)
- return -ENODATA;
-
- *client_id = lease->client_id;
- *client_id_len = lease->client_id_len;
-
- return 0;
-}
-
-int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len) {
- assert_return(lease, -EINVAL);
- assert_return(client_id || client_id_len <= 0, -EINVAL);
-
- if (client_id_len <= 0)
- lease->client_id = mfree(lease->client_id);
- else {
- void *p;
-
- p = memdup(client_id, client_id_len);
- if (!p)
- return -ENOMEM;
-
- free(lease->client_id);
- lease->client_id = p;
- lease->client_id_len = client_id_len;
- }
-
- return 0;
-}
-
-int sd_dhcp_lease_get_timezone(sd_dhcp_lease *lease, const char **tz) {
- assert_return(lease, -EINVAL);
- assert_return(tz, -EINVAL);
-
- if (!lease->timezone)
- return -ENODATA;
-
- *tz = lease->timezone;
- return 0;
-}
-
-int sd_dhcp_route_get_destination(sd_dhcp_route *route, struct in_addr *destination) {
- assert_return(route, -EINVAL);
- assert_return(destination, -EINVAL);
-
- *destination = route->dst_addr;
- return 0;
-}
-
-int sd_dhcp_route_get_destination_prefix_length(sd_dhcp_route *route, uint8_t *length) {
- assert_return(route, -EINVAL);
- assert_return(length, -EINVAL);
-
- *length = route->dst_prefixlen;
- return 0;
-}
-
-int sd_dhcp_route_get_gateway(sd_dhcp_route *route, struct in_addr *gateway) {
- assert_return(route, -EINVAL);
- assert_return(gateway, -EINVAL);
-
- *gateway = route->gw_addr;
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 11:19:58 +0000