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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Tom Gundersen <teg@jklm.no>
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 <ctype.h>
#include "conf-parser.h"
#include "def.h"
#include "dhcp-identifier.h"
#include "networkd-conf.h"
#include "string-table.h"
int manager_parse_config_file(Manager *m) {
assert(m);
return config_parse_many(PKGSYSCONFDIR "/networkd.conf",
CONF_PATHS_NULSTR("systemd/networkd.conf.d"),
"DUID\0",
config_item_perf_lookup, networkd_gperf_lookup,
false, m);
}
static const char* const dhcp_duid_type_table[_DHCP_DUID_TYPE_MAX] = {
[DHCP_DUID_TYPE_RAW] = "raw",
[DHCP_DUID_TYPE_LLT] = "link-layer-time",
[DHCP_DUID_TYPE_EN] = "vendor",
[DHCP_DUID_TYPE_LL] = "link-layer",
[DHCP_DUID_TYPE_UUID] = "uuid"
};
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_duid_type, DHCPDUIDType);
DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_duid_type, dhcp_duid_type, DHCPDUIDType, "Failed to parse DHCP DUID type");
int config_parse_dhcp_duid_raw(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int r;
long byte;
char *cbyte, *pnext;
const char *pduid = (const char *)rvalue;
size_t count = 0, duid_len = 0;
Manager *m = userdata;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(m);
assert(m->dhcp_duid_type != _DHCP_DUID_TYPE_INVALID);
switch (m->dhcp_duid_type) {
case DHCP_DUID_TYPE_LLT:
/* RawData contains DUID-LLT link-layer address (offset 6) */
duid_len = 6;
break;
case DHCP_DUID_TYPE_EN:
/* RawData contains DUID-EN identifier (offset 4) */
duid_len = 4;
break;
case DHCP_DUID_TYPE_LL:
/* RawData contains DUID-LL link-layer address (offset 2) */
duid_len = 2;
break;
case DHCP_DUID_TYPE_UUID:
/* RawData specifies UUID (offset 0) - fall thru */
case DHCP_DUID_TYPE_RAW:
/* First two bytes of RawData is DUID Type - fall thru */
default:
break;
}
if (m->dhcp_duid_type != DHCP_DUID_TYPE_RAW)
m->dhcp_duid.type = htobe16(m->dhcp_duid_type);
/* RawData contains DUID in format " NN:NN:NN... " */
while (true) {
r = extract_first_word(&pduid, &cbyte, ":", 0);
if (r < 0) {
log_error("Failed to read DUID.");
return -EINVAL;
}
if (r == 0)
break;
if (duid_len >= MAX_DUID_LEN) {
log_error("DUID length exceeds maximum length.");
return -EINVAL;
}
errno = 0;
byte = strtol(cbyte, &pnext, 16);
if ((errno == ERANGE && (byte == LONG_MAX || byte == LONG_MIN))
|| (errno != 0 && byte == 0) || (cbyte == pnext)) {
log_error("Invalid DUID byte: %s.", cbyte);
return -EINVAL;
}
/* If DHCP_DUID_TYPE_RAW, first two bytes holds DUID Type */
if ((m->dhcp_duid_type == DHCP_DUID_TYPE_RAW) && (count < 2)) {
m->dhcp_duid.type |= (byte << (8 * count));
count++;
continue;
}
m->dhcp_duid.raw.data[duid_len++] = byte;
}
m->dhcp_duid_len = sizeof(m->dhcp_duid.type) + duid_len;
return 0;
}
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