134 lines
4.7 KiB
C
134 lines
4.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2014 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <ctype.h>
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#include "conf-parser.h"
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#include "def.h"
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#include "dhcp-identifier.h"
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#include "networkd-conf.h"
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#include "string-table.h"
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int manager_parse_config_file(Manager *m) {
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assert(m);
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return config_parse_many(PKGSYSCONFDIR "/networkd.conf",
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CONF_PATHS_NULSTR("systemd/networkd.conf.d"),
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"DUID\0",
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config_item_perf_lookup, networkd_gperf_lookup,
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false, m);
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}
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static const char* const dhcp_duid_type_table[_DHCP_DUID_TYPE_MAX] = {
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[DHCP_DUID_TYPE_RAW] = "raw",
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[DHCP_DUID_TYPE_LLT] = "link-layer-time",
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[DHCP_DUID_TYPE_EN] = "vendor",
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[DHCP_DUID_TYPE_LL] = "link-layer",
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[DHCP_DUID_TYPE_UUID] = "uuid"
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};
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DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_duid_type, DHCPDUIDType);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_duid_type, dhcp_duid_type, DHCPDUIDType, "Failed to parse DHCP DUID type");
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int config_parse_dhcp_duid_raw(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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int r;
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long byte;
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char *cbyte, *pnext;
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const char *pduid = (const char *)rvalue;
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size_t count = 0, duid_len = 0;
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Manager *m = userdata;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(m);
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assert(m->dhcp_duid_type != _DHCP_DUID_TYPE_INVALID);
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switch (m->dhcp_duid_type) {
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case DHCP_DUID_TYPE_LLT:
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/* RawData contains DUID-LLT link-layer address (offset 6) */
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duid_len = 6;
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break;
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case DHCP_DUID_TYPE_EN:
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/* RawData contains DUID-EN identifier (offset 4) */
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duid_len = 4;
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break;
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case DHCP_DUID_TYPE_LL:
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/* RawData contains DUID-LL link-layer address (offset 2) */
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duid_len = 2;
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break;
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case DHCP_DUID_TYPE_UUID:
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/* RawData specifies UUID (offset 0) - fall thru */
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case DHCP_DUID_TYPE_RAW:
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/* First two bytes of RawData is DUID Type - fall thru */
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default:
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break;
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}
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if (m->dhcp_duid_type != DHCP_DUID_TYPE_RAW)
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m->dhcp_duid.type = htobe16(m->dhcp_duid_type);
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/* RawData contains DUID in format " NN:NN:NN... " */
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while (true) {
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r = extract_first_word(&pduid, &cbyte, ":", 0);
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if (r < 0) {
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log_error("Failed to read DUID.");
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return -EINVAL;
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}
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if (r == 0)
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break;
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if (duid_len >= MAX_DUID_LEN) {
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log_error("DUID length exceeds maximum length.");
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return -EINVAL;
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}
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errno = 0;
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byte = strtol(cbyte, &pnext, 16);
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if ((errno == ERANGE && (byte == LONG_MAX || byte == LONG_MIN))
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|| (errno != 0 && byte == 0) || (cbyte == pnext)) {
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log_error("Invalid DUID byte: %s.", cbyte);
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return -EINVAL;
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}
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/* If DHCP_DUID_TYPE_RAW, first two bytes holds DUID Type */
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if ((m->dhcp_duid_type == DHCP_DUID_TYPE_RAW) && (count < 2)) {
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m->dhcp_duid.type |= (byte << (8 * count));
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count++;
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continue;
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}
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m->dhcp_duid.raw.data[duid_len++] = byte;
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}
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m->dhcp_duid_len = sizeof(m->dhcp_duid.type) + duid_len;
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return 0;
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}
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