diff options
Diffstat (limited to 'src/libsystemd-network/sd-dhcp-lease.c')
-rw-r--r-- | src/libsystemd-network/sd-dhcp-lease.c | 1178 |
1 files changed, 0 insertions, 1178 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c deleted file mode 100644 index ef50ed17a1..0000000000 --- a/src/libsystemd-network/sd-dhcp-lease.c +++ /dev/null @@ -1,1178 +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); - free(lease); - - return NULL; -} - -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; -} |