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-rw-r--r--src/libsystemd-network/network-internal.c886
1 files changed, 886 insertions, 0 deletions
diff --git a/src/libsystemd-network/network-internal.c b/src/libsystemd-network/network-internal.c
new file mode 100644
index 0000000..e4a0741
--- /dev/null
+++ b/src/libsystemd-network/network-internal.c
@@ -0,0 +1,886 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <arpa/inet.h>
+#include <linux/if.h>
+#include <netinet/ether.h>
+
+#include "sd-id128.h"
+#include "sd-ndisc.h"
+
+#include "alloc-util.h"
+#include "arphrd-list.h"
+#include "condition.h"
+#include "conf-parser.h"
+#include "device-util.h"
+#include "dhcp-lease-internal.h"
+#include "env-util.h"
+#include "ether-addr-util.h"
+#include "hexdecoct.h"
+#include "log.h"
+#include "network-internal.h"
+#include "parse-util.h"
+#include "siphash24.h"
+#include "socket-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "utf8.h"
+#include "util.h"
+
+const char *net_get_name_persistent(sd_device *device) {
+ const char *name, *field;
+
+ assert(device);
+
+ /* 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")
+ if (sd_device_get_property_value(device, field, &name) >= 0)
+ return name;
+
+ return NULL;
+}
+
+#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(sd_device *device, bool use_sysname, uint64_t *result) {
+ size_t l, sz = 0;
+ const char *name;
+ int r;
+ uint8_t *v;
+
+ assert(device);
+
+ /* net_get_name_persistent() will return one of the device names based on stable information about
+ * the device. If this is not available, we fall back to using the actual device name. */
+ name = net_get_name_persistent(device);
+ if (!name && use_sysname)
+ (void) sd_device_get_sysname(device, &name);
+ if (!name)
+ return log_device_debug_errno(device, SYNTHETIC_ERRNO(ENODATA),
+ "No stable identifying information found");
+
+ log_device_debug(device, "Using \"%s\" as stable identifying information", name);
+ l = strlen(name);
+ sz = sizeof(sd_id128_t) + l;
+ v = newa(uint8_t, 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. */
+ *result = htole64(siphash24(v, sz, HASH_KEY.bytes));
+ return 0;
+}
+
+static bool net_condition_test_strv(char * const *patterns, const char *string) {
+ char * const *p;
+ bool match = false, has_positive_rule = false;
+
+ if (strv_isempty(patterns))
+ return true;
+
+ STRV_FOREACH(p, patterns) {
+ const char *q = *p;
+ bool invert;
+
+ invert = *q == '!';
+ q += invert;
+
+ if (!invert)
+ has_positive_rule = true;
+
+ if (string && fnmatch(q, string, 0) == 0) {
+ if (invert)
+ return false;
+ else
+ match = true;
+ }
+ }
+
+ return has_positive_rule ? match : true;
+}
+
+static bool net_condition_test_ifname(char * const *patterns, const char *ifname, char * const *alternative_names) {
+ if (net_condition_test_strv(patterns, ifname))
+ return true;
+
+ char * const *p;
+ STRV_FOREACH(p, alternative_names)
+ if (net_condition_test_strv(patterns, *p))
+ return true;
+
+ return false;
+}
+
+static int net_condition_test_property(char * const *match_property, sd_device *device) {
+ char * const *p;
+
+ if (strv_isempty(match_property))
+ return true;
+
+ STRV_FOREACH(p, match_property) {
+ _cleanup_free_ char *key = NULL;
+ const char *val, *dev_val;
+ bool invert, v;
+
+ invert = **p == '!';
+
+ val = strchr(*p + invert, '=');
+ if (!val)
+ return -EINVAL;
+
+ key = strndup(*p + invert, val - *p - invert);
+ if (!key)
+ return -ENOMEM;
+
+ val++;
+
+ v = device &&
+ sd_device_get_property_value(device, key, &dev_val) >= 0 &&
+ fnmatch(val, dev_val, 0) == 0;
+
+ if (invert ? v : !v)
+ return false;
+ }
+
+ return true;
+}
+
+static const char *const wifi_iftype_table[NL80211_IFTYPE_MAX+1] = {
+ [NL80211_IFTYPE_ADHOC] = "ad-hoc",
+ [NL80211_IFTYPE_STATION] = "station",
+ [NL80211_IFTYPE_AP] = "ap",
+ [NL80211_IFTYPE_AP_VLAN] = "ap-vlan",
+ [NL80211_IFTYPE_WDS] = "wds",
+ [NL80211_IFTYPE_MONITOR] = "monitor",
+ [NL80211_IFTYPE_MESH_POINT] = "mesh-point",
+ [NL80211_IFTYPE_P2P_CLIENT] = "p2p-client",
+ [NL80211_IFTYPE_P2P_GO] = "p2p-go",
+ [NL80211_IFTYPE_P2P_DEVICE] = "p2p-device",
+ [NL80211_IFTYPE_OCB] = "ocb",
+ [NL80211_IFTYPE_NAN] = "nan",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(wifi_iftype, enum nl80211_iftype);
+
+char *link_get_type_string(unsigned short iftype, sd_device *device) {
+ const char *t, *devtype;
+ char *p;
+
+ if (device &&
+ sd_device_get_devtype(device, &devtype) >= 0 &&
+ !isempty(devtype))
+ return strdup(devtype);
+
+ t = arphrd_to_name(iftype);
+ if (!t)
+ return NULL;
+
+ p = strdup(t);
+ if (!p)
+ return NULL;
+
+ ascii_strlower(p);
+ return p;
+}
+
+bool net_match_config(Set *match_mac,
+ Set *match_permanent_mac,
+ char * const *match_paths,
+ char * const *match_drivers,
+ char * const *match_iftypes,
+ char * const *match_names,
+ char * const *match_property,
+ char * const *match_wifi_iftype,
+ char * const *match_ssid,
+ Set *match_bssid,
+ sd_device *device,
+ const struct ether_addr *dev_mac,
+ const struct ether_addr *dev_permanent_mac,
+ const char *dev_driver,
+ unsigned short dev_iftype,
+ const char *dev_name,
+ char * const *alternative_names,
+ enum nl80211_iftype dev_wifi_iftype,
+ const char *dev_ssid,
+ const struct ether_addr *dev_bssid) {
+
+ _cleanup_free_ char *dev_iftype_str;
+ const char *dev_path = NULL;
+
+ dev_iftype_str = link_get_type_string(dev_iftype, device);
+
+ if (device) {
+ const char *mac_str;
+
+ (void) sd_device_get_property_value(device, "ID_PATH", &dev_path);
+ if (!dev_driver)
+ (void) sd_device_get_property_value(device, "ID_NET_DRIVER", &dev_driver);
+ if (!dev_name)
+ (void) sd_device_get_sysname(device, &dev_name);
+ if (!dev_mac &&
+ sd_device_get_sysattr_value(device, "address", &mac_str) >= 0)
+ dev_mac = ether_aton(mac_str);
+ }
+
+ if (match_mac && (!dev_mac || !set_contains(match_mac, dev_mac)))
+ return false;
+
+ if (match_permanent_mac &&
+ (!dev_permanent_mac ||
+ ether_addr_is_null(dev_permanent_mac) ||
+ !set_contains(match_permanent_mac, dev_permanent_mac)))
+ return false;
+
+ if (!net_condition_test_strv(match_paths, dev_path))
+ return false;
+
+ if (!net_condition_test_strv(match_drivers, dev_driver))
+ return false;
+
+ if (!net_condition_test_strv(match_iftypes, dev_iftype_str))
+ return false;
+
+ if (!net_condition_test_ifname(match_names, dev_name, alternative_names))
+ return false;
+
+ if (!net_condition_test_property(match_property, device))
+ return false;
+
+ if (!net_condition_test_strv(match_wifi_iftype, wifi_iftype_to_string(dev_wifi_iftype)))
+ return false;
+
+ if (!net_condition_test_strv(match_ssid, dev_ssid))
+ return false;
+
+ if (match_bssid && (!dev_bssid || !set_contains(match_bssid, dev_bssid)))
+ return false;
+
+ return true;
+}
+
+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 **list = data, *c;
+ bool negate;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ *list = condition_free_list_type(*list, cond);
+ return 0;
+ }
+
+ negate = rvalue[0] == '!';
+ if (negate)
+ rvalue++;
+
+ c = condition_new(cond, rvalue, false, negate);
+ if (!c)
+ return log_oom();
+
+ /* Drop previous assignment. */
+ *list = condition_free_list_type(*list, cond);
+
+ LIST_PREPEND(conditions, *list, c);
+ return 0;
+}
+
+int config_parse_match_strv(
+ 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) {
+
+ const char *p = rvalue;
+ char ***sv = data;
+ bool invert;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ *sv = strv_free(*sv);
+ return 0;
+ }
+
+ invert = *p == '!';
+ p += invert;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *k = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
+ if (r == 0)
+ return 0;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (invert) {
+ k = strjoin("!", word);
+ if (!k)
+ return log_oom();
+ } else
+ k = TAKE_PTR(word);
+
+ r = strv_consume(sv, TAKE_PTR(k));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+int config_parse_match_ifnames(
+ 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) {
+
+ const char *p = rvalue;
+ char ***sv = data;
+ bool invert;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ invert = *p == '!';
+ p += invert;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *k = NULL;
+
+ r = extract_first_word(&p, &word, NULL, 0);
+ if (r == 0)
+ return 0;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Failed to parse interface name list: %s", rvalue);
+ return 0;
+ }
+
+ if (!ifname_valid_full(word, ltype)) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Interface name is not valid or too long, ignoring assignment: %s", word);
+ continue;
+ }
+
+ if (invert) {
+ k = strjoin("!", word);
+ if (!k)
+ return log_oom();
+ } else
+ k = TAKE_PTR(word);
+
+ r = strv_consume(sv, TAKE_PTR(k));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+int config_parse_match_property(
+ 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) {
+
+ const char *p = rvalue;
+ char ***sv = data;
+ bool invert;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ invert = *p == '!';
+ p += invert;
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *k = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
+ if (r == 0)
+ return 0;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (!env_assignment_is_valid(word)) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Invalid property or value, ignoring assignment: %s", word);
+ continue;
+ }
+
+ if (invert) {
+ k = strjoin("!", word);
+ if (!k)
+ return log_oom();
+ } else
+ k = TAKE_PTR(word);
+
+ r = strv_consume(sv, TAKE_PTR(k));
+ if (r < 0)
+ return log_oom();
+ }
+}
+
+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;
+ _cleanup_free_ char *n = NULL;
+
+ 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, 0, "Interface alias is not ASCII clean or is too long, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ if (isempty(n))
+ *s = mfree(*s);
+ else
+ free_and_replace(*s, n);
+
+ 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) {
+
+ _cleanup_free_ struct ether_addr *n = NULL;
+ struct ether_addr **hwaddr = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ n = new0(struct ether_addr, 1);
+ if (!n)
+ return log_oom();
+
+ r = ether_addr_from_string(rvalue, n);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Not a valid MAC address, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ free_and_replace(*hwaddr, n);
+
+ return 0;
+}
+
+int config_parse_hwaddrs(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) {
+
+ _cleanup_set_free_free_ Set *s = NULL;
+ const char *p = rvalue;
+ Set **hwaddrs = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ /* Empty assignment resets the list */
+ *hwaddrs = set_free_free(*hwaddrs);
+ return 0;
+ }
+
+ s = set_new(&ether_addr_hash_ops);
+ if (!s)
+ return log_oom();
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ _cleanup_free_ struct ether_addr *n = NULL;
+
+ r = extract_first_word(&p, &word, NULL, 0);
+ if (r == 0)
+ break;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ n = new(struct ether_addr, 1);
+ if (!n)
+ return log_oom();
+
+ r = ether_addr_from_string(word, n);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Not a valid MAC address, ignoring: %s", word);
+ continue;
+ }
+
+ r = set_put(s, n);
+ if (r < 0)
+ return log_oom();
+ if (r > 0)
+ n = NULL; /* avoid cleanup */
+ }
+
+ r = set_ensure_allocated(hwaddrs, &ether_addr_hash_ops);
+ if (r < 0)
+ return log_oom();
+
+ r = set_move(*hwaddrs, s);
+ if (r < 0)
+ return log_oom();
+
+ return 0;
+}
+
+int config_parse_bridge_port_priority(
+ 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) {
+
+ uint16_t i;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = safe_atou16(rvalue, &i);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse bridge port priority, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Bridge port priority is larger than maximum %u, ignoring: %s", LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue);
+ return 0;
+ }
+
+ *((uint16_t *)data) = i;
+
+ return 0;
+}
+
+size_t serialize_in_addrs(FILE *f,
+ const struct in_addr *addresses,
+ size_t size,
+ bool *with_leading_space,
+ bool (*predicate)(const struct in_addr *addr)) {
+ assert(f);
+ assert(addresses);
+
+ size_t count = 0;
+ bool _space = false;
+ if (!with_leading_space)
+ with_leading_space = &_space;
+
+ for (size_t i = 0; i < size; i++) {
+ char sbuf[INET_ADDRSTRLEN];
+
+ if (predicate && !predicate(&addresses[i]))
+ continue;
+
+ if (*with_leading_space)
+ fputc(' ', f);
+ fputs(inet_ntop(AF_INET, &addresses[i], sbuf, sizeof(sbuf)), f);
+ count++;
+ *with_leading_space = true;
+ }
+
+ return count;
+}
+
+int deserialize_in_addrs(struct in_addr **ret, const char *string) {
+ _cleanup_free_ struct in_addr *addresses = NULL;
+ int size = 0;
+
+ assert(ret);
+ assert(string);
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ struct in_addr *new_addresses;
+ int r;
+
+ r = extract_first_word(&string, &word, NULL, 0);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ new_addresses = reallocarray(addresses, size + 1, sizeof(struct in_addr));
+ if (!new_addresses)
+ return -ENOMEM;
+ else
+ addresses = new_addresses;
+
+ r = inet_pton(AF_INET, word, &(addresses[size]));
+ if (r <= 0)
+ continue;
+
+ size++;
+ }
+
+ *ret = size > 0 ? TAKE_PTR(addresses) : NULL;
+
+ return size;
+}
+
+void serialize_in6_addrs(FILE *f, const struct in6_addr *addresses, size_t size, bool *with_leading_space) {
+ assert(f);
+ assert(addresses);
+ assert(size);
+
+ bool _space = false;
+ if (!with_leading_space)
+ with_leading_space = &_space;
+
+ for (size_t i = 0; i < size; i++) {
+ char buffer[INET6_ADDRSTRLEN];
+
+ if (*with_leading_space)
+ fputc(' ', f);
+ fputs(inet_ntop(AF_INET6, addresses+i, buffer, sizeof(buffer)), f);
+ *with_leading_space = true;
+ }
+}
+
+int deserialize_in6_addrs(struct in6_addr **ret, const char *string) {
+ _cleanup_free_ struct in6_addr *addresses = NULL;
+ int size = 0;
+
+ assert(ret);
+ assert(string);
+
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ struct in6_addr *new_addresses;
+ int r;
+
+ r = extract_first_word(&string, &word, NULL, 0);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ new_addresses = reallocarray(addresses, size + 1, sizeof(struct in6_addr));
+ if (!new_addresses)
+ return -ENOMEM;
+ else
+ addresses = new_addresses;
+
+ r = inet_pton(AF_INET6, word, &(addresses[size]));
+ if (r <= 0)
+ continue;
+
+ size++;
+ }
+
+ *ret = TAKE_PTR(addresses);
+
+ return size;
+}
+
+void serialize_dhcp_routes(FILE *f, const char *key, sd_dhcp_route **routes, size_t size) {
+ assert(f);
+ assert(key);
+ assert(routes);
+ assert(size);
+
+ fprintf(f, "%s=", key);
+
+ for (size_t i = 0; i < size; i++) {
+ char sbuf[INET_ADDRSTRLEN];
+ struct in_addr dest, gw;
+ uint8_t length;
+
+ assert_se(sd_dhcp_route_get_destination(routes[i], &dest) >= 0);
+ assert_se(sd_dhcp_route_get_gateway(routes[i], &gw) >= 0);
+ assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &length) >= 0);
+
+ fprintf(f, "%s/%" PRIu8, inet_ntop(AF_INET, &dest, sbuf, sizeof sbuf), length);
+ fprintf(f, ",%s%s", inet_ntop(AF_INET, &gw, sbuf, sizeof sbuf), i < size - 1 ? " ": "");
+ }
+
+ fputs("\n", f);
+}
+
+int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, size_t *ret_allocated, const char *string) {
+ _cleanup_free_ struct sd_dhcp_route *routes = NULL;
+ size_t size = 0, allocated = 0;
+
+ assert(ret);
+ assert(ret_size);
+ assert(ret_allocated);
+ assert(string);
+
+ /* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ char *tok, *tok_end;
+ unsigned n;
+ int r;
+
+ r = extract_first_word(&string, &word, NULL, 0);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ if (!GREEDY_REALLOC(routes, allocated, size + 1))
+ return -ENOMEM;
+
+ tok = word;
+
+ /* get the subnet */
+ tok_end = strchr(tok, '/');
+ if (!tok_end)
+ continue;
+ *tok_end = '\0';
+
+ r = inet_aton(tok, &routes[size].dst_addr);
+ if (r == 0)
+ continue;
+
+ tok = tok_end + 1;
+
+ /* get the prefixlen */
+ tok_end = strchr(tok, ',');
+ if (!tok_end)
+ continue;
+
+ *tok_end = '\0';
+
+ r = safe_atou(tok, &n);
+ if (r < 0 || n > 32)
+ continue;
+
+ routes[size].dst_prefixlen = (uint8_t) n;
+ tok = tok_end + 1;
+
+ /* get the gateway */
+ r = inet_aton(tok, &routes[size].gw_addr);
+ if (r == 0)
+ continue;
+
+ size++;
+ }
+
+ *ret_size = size;
+ *ret_allocated = allocated;
+ *ret = TAKE_PTR(routes);
+
+ return 0;
+}
+
+int serialize_dhcp_option(FILE *f, const char *key, const void *data, size_t size) {
+ _cleanup_free_ char *hex_buf = NULL;
+
+ assert(f);
+ assert(key);
+ assert(data);
+
+ hex_buf = hexmem(data, size);
+ if (!hex_buf)
+ return -ENOMEM;
+
+ fprintf(f, "%s=%s\n", key, hex_buf);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 23:34:35 +0000