+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright (C) 2013 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 <netinet/ether.h>
-#include <linux/if.h>
-#include <arpa/inet.h>
-#include <fnmatch.h>
-
-#include "strv.h"
-#include "siphash24.h"
-#include "libudev-private.h"
-#include "net-util.h"
-#include "log.h"
-#include "utf8.h"
-#include "util.h"
-#include "conf-parser.h"
-#include "condition.h"
-
-#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a)
-
-int net_get_unique_predictable_data(struct udev_device *device, uint8_t result[8]) {
- size_t l, sz = 0;
- const char *name, *field = NULL;
- int r;
- uint8_t *v;
-
- /* fetch some persistent data unique (on this machine) to this device */
- FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") {
- name = udev_device_get_property_value(device, field);
- if (name)
- break;
- }
-
- if (!name)
- return -ENOENT;
-
- l = strlen(name);
- sz = sizeof(sd_id128_t) + l;
- v = alloca(sz);
-
- /* fetch some persistent data unique to this machine */
- r = sd_id128_get_machine((sd_id128_t*) v);
- if (r < 0)
- return r;
- memcpy(v + sizeof(sd_id128_t), name, l);
-
- /* Let's hash the machine ID plus the device name. We
- * use a fixed, but originally randomly created hash
- * key here. */
- siphash24(result, v, sz, HASH_KEY.bytes);
-
- return 0;
-}
-
-bool net_match_config(const struct ether_addr *match_mac,
- const char *match_path,
- const char *match_driver,
- const char *match_type,
- const char *match_name,
- Condition *match_host,
- Condition *match_virt,
- Condition *match_kernel,
- Condition *match_arch,
- const char *dev_mac,
- const char *dev_path,
- const char *dev_parent_driver,
- const char *dev_driver,
- const char *dev_type,
- const char *dev_name) {
-
- if (match_host && !condition_test_host(match_host))
- return 0;
-
- if (match_virt && !condition_test_virtualization(match_virt))
- return 0;
-
- if (match_kernel && !condition_test_kernel_command_line(match_kernel))
- return 0;
-
- if (match_arch && !condition_test_architecture(match_arch))
- return 0;
-
- if (match_mac && (!dev_mac || memcmp(match_mac, ether_aton(dev_mac), ETH_ALEN)))
- return 0;
-
- if (match_path && (!dev_path || fnmatch(match_path, dev_path, 0)))
- return 0;
-
- if (match_driver) {
- if (dev_parent_driver && !streq(match_driver, dev_parent_driver))
- return 0;
- else if (!streq_ptr(match_driver, dev_driver))
- return 0;
- }
-
- if (match_type && !streq_ptr(match_type, dev_type))
- return 0;
-
- if (match_name && (!dev_name || fnmatch(match_name, dev_name, 0)))
- return 0;
-
- return 1;
-}
-
-unsigned net_netmask_to_prefixlen(const struct in_addr *addr) {
- assert(addr);
-
- return 32 - u32ctz(be32toh(addr->s_addr));
-}
-
-int config_parse_net_condition(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) {
-
- ConditionType cond = ltype;
- Condition **ret = data;
- bool negate;
- Condition *c;
- _cleanup_free_ char *s = NULL;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- negate = rvalue[0] == '!';
- if (negate)
- rvalue++;
-
- s = strdup(rvalue);
- if (!s)
- return log_oom();
-
- c = condition_new(cond, s, false, negate);
- if (!c)
- return log_oom();
-
- if (*ret)
- condition_free(*ret);
-
- *ret = c;
- return 0;
-}
-
-int config_parse_ifname(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) {
-
- char **s = data;
- char *n;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- n = strdup(rvalue);
- if (!n)
- return log_oom();
-
- if (!ascii_is_valid(n) || strlen(n) >= IFNAMSIZ) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Interface name is not ASCII clean or is too long, ignoring assignment: %s", rvalue);
- free(n);
- return 0;
- }
-
- free(*s);
- if (*n)
- *s = n;
- else {
- free(n);
- *s = NULL;
- }
-
- return 0;
-}
-
-int config_parse_ifalias(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) {
-
- char **s = data;
- char *n;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- n = strdup(rvalue);
- if (!n)
- return log_oom();
-
- if (!ascii_is_valid(n) || strlen(n) >= IFALIASZ) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Interface alias is not ASCII clean or is too long, ignoring assignment: %s", rvalue);
- free(n);
- return 0;
- }
-
- free(*s);
- if (*n)
- *s = n;
- else {
- free(n);
- *s = NULL;
- }
-
- return 0;
-}
-
-int config_parse_hwaddr(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) {
- struct ether_addr **hwaddr = data;
- struct ether_addr *n;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- n = new0(struct ether_addr, 1);
- if (!n)
- return log_oom();
-
- r = sscanf(rvalue, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
- &n->ether_addr_octet[0],
- &n->ether_addr_octet[1],
- &n->ether_addr_octet[2],
- &n->ether_addr_octet[3],
- &n->ether_addr_octet[4],
- &n->ether_addr_octet[5]);
- if (r != 6) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Not a valid MAC address, ignoring assignment: %s", rvalue);
- free(n);
- return 0;
- }
-
- free(*hwaddr);
- *hwaddr = n;
-
- return 0;
-}
-
-int net_parse_inaddr(const char *address, unsigned char *family, void *dst) {
- int r;
-
- assert(address);
- assert(family);
- assert(dst);
-
- /* IPv4 */
- r = inet_pton(AF_INET, address, dst);
- if (r > 0) {
- /* succsefully parsed IPv4 address */
- if (*family == AF_UNSPEC)
- *family = AF_INET;
- else if (*family != AF_INET)
- return -EINVAL;
- } else if (r < 0)
- return -errno;
- else {
- /* not an IPv4 address, so let's try IPv6 */
- r = inet_pton(AF_INET6, address, dst);
- if (r > 0) {
- /* successfully parsed IPv6 address */
- if (*family == AF_UNSPEC)
- *family = AF_INET6;
- else if (*family != AF_INET6)
- return -EINVAL;
- } else if (r < 0)
- return -errno;
- else
- return -EINVAL;
- }
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff