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Diffstat (limited to 'src/network/networkd-conf.c')
| -rw-r--r-- | src/network/networkd-conf.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/network/networkd-conf.c b/src/network/networkd-conf.c new file mode 100644 index 0000000000..70f0121d6d --- /dev/null +++ b/src/network/networkd-conf.c @@ -0,0 +1,171 @@ +/*** + This file is part of systemd. + + Copyright 2014 Vinay Kulkarni <kulkarniv@vmware.com> + + 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 "hexdecoct.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"), + "DHCP\0", + config_item_perf_lookup, networkd_gperf_lookup, + false, m); +} + +static const char* const duid_type_table[_DUID_TYPE_MAX] = { + [DUID_TYPE_RAW] = "raw", + [DUID_TYPE_LLT] = "link-layer-time", + [DUID_TYPE_EN] = "vendor", + [DUID_TYPE_LL] = "link-layer", + [DUID_TYPE_UUID] = "uuid" +}; +DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(duid_type, DUIDType); +DEFINE_CONFIG_PARSE_ENUM(config_parse_duid_type, duid_type, DUIDType, "Failed to parse DUID type"); + +int config_parse_duid_rawdata( + 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; + char *cbyte; + const char *pduid = rvalue; + Manager *m = userdata; + Network *n = userdata; + DUIDType duidtype; + uint16_t dhcp_duid_type = 0; + uint8_t dhcp_duid[MAX_DUID_LEN]; + size_t len, count = 0, duid_start_offset = 0, dhcp_duid_len = 0; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(userdata); + + duidtype = (ltype == DUID_CONFIG_SOURCE_GLOBAL) ? m->duid_type : n->duid_type; + + if (duidtype == _DUID_TYPE_INVALID) + duidtype = DUID_TYPE_RAW; + + switch (duidtype) { + + case DUID_TYPE_LLT: + /* RawData contains DUID-LLT link-layer address (offset 6) */ + duid_start_offset = 6; + break; + + case DUID_TYPE_EN: + /* RawData contains DUID-EN identifier (offset 4) */ + duid_start_offset = 4; + break; + + case DUID_TYPE_LL: + /* RawData contains DUID-LL link-layer address (offset 2) */ + duid_start_offset = 2; + break; + + case DUID_TYPE_UUID: + /* RawData specifies UUID (offset 0) - fall thru */ + + case DUID_TYPE_RAW: + /* First two bytes of RawData is DUID Type - fall thru */ + + default: + break; + } + + if (duidtype != DUID_TYPE_RAW) + dhcp_duid_type = (uint16_t) duidtype; + + /* RawData contains DUID in format " NN:NN:NN... " */ + for (;;) { + int n1, n2; + uint32_t byte; + + r = extract_first_word(&pduid, &cbyte, ":", 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to read DUID, ignoring assignment: %s.", rvalue); + return 0; + } + if (r == 0) + break; + if (duid_start_offset + dhcp_duid_len >= MAX_DUID_LEN) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Max DUID length exceeded, ignoring assignment: %s.", rvalue); + return 0; + } + + len = strlen(cbyte); + if (len != 1 && len != 2) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid length - DUID byte: %s, ignoring assignment: %s.", cbyte, rvalue); + return 0; + } + n1 = unhexchar(cbyte[0]); + if (len == 2) + n2 = unhexchar(cbyte[1]); + else + n2 = 0; + + if (n1 < 0 || n2 < 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid DUID byte: %s. Ignoring assignment: %s.", cbyte, rvalue); + return 0; + } + + byte = ((uint8_t) n1 << (4 * (len-1))) | (uint8_t) n2; + + /* If DUID_TYPE_RAW, first two bytes hold DHCP DUID type code */ + if (duidtype == DUID_TYPE_RAW && count < 2) { + dhcp_duid_type |= (byte << (8 * (1 - count))); + count++; + continue; + } + + dhcp_duid[duid_start_offset + dhcp_duid_len] = byte; + dhcp_duid_len++; + } + + if (ltype == DUID_CONFIG_SOURCE_GLOBAL) { + m->duid_type = duidtype; + m->dhcp_duid_type = dhcp_duid_type; + m->dhcp_duid_len = dhcp_duid_len; + memcpy(&m->dhcp_duid[duid_start_offset], dhcp_duid, dhcp_duid_len); + } else { + /* DUID_CONFIG_SOURCE_NETWORK */ + n->duid_type = duidtype; + n->dhcp_duid_type = dhcp_duid_type; + n->dhcp_duid_len = dhcp_duid_len; + memcpy(&n->dhcp_duid[duid_start_offset], dhcp_duid, dhcp_duid_len); + } + + return 0; +} |