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network: verify [IPv6AddressLabel] section

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This commit is contained in:
Yu Watanabe 2021-10-28 01:38:04 +09:00
parent 3dfa7311e2
commit 834f4294a7
2 changed files with 31 additions and 6 deletions
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32
src/network/networkd-address-label.c
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@ -54,6 +54,7 @@ static int address_label_new_static(Network *network, const char *filename, unsi
*label = (AddressLabel) {
.network = network,
.section = TAKE_PTR(n),
.label = UINT32_MAX,
};
r = hashmap_ensure_put(&network->address_labels_by_section, &network_config_hash_ops, label->section, label);
@ -118,7 +119,7 @@ static int address_label_configure(AddressLabel *label, Link *link, link_netlink
if (r < 0)
return log_link_error_errno(link, r, "Could not append IFAL_LABEL attribute: %m");
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr);
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->prefix);
if (r < 0)
return log_link_error_errno(link, r, "Could not append IFA_ADDRESS attribute: %m");
@ -171,13 +172,35 @@ int request_process_address_label(Request *req) {
return address_label_configure(req->label, req->link, req->netlink_handler);
}
static int address_label_section_verify(AddressLabel *label) {
assert(label);
assert(label->section);
if (section_is_invalid(label->section))
return -EINVAL;
if (!label->prefix_set)
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: [IPv6AddressLabel] section without Prefix= setting specified. "
"Ignoring [IPv6AddressLabel] section from line %u.",
label->section->filename, label->section->line);
if (label->label == UINT32_MAX)
return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: [IPv6AddressLabel] section without Label= setting specified. "
"Ignoring [IPv6AddressLabel] section from line %u.",
label->section->filename, label->section->line);
return 0;
}
void network_drop_invalid_address_labels(Network *network) {
AddressLabel *label;
assert(network);
HASHMAP_FOREACH(label, network->address_labels_by_section)
if (section_is_invalid(label->section))
if (address_label_section_verify(label) < 0)
address_label_free(label);
}
@ -223,8 +246,9 @@ int config_parse_address_label_prefix(
return 0;
}
n->in_addr = a.in6;
n->prefix = a.in6;
n->prefixlen = prefixlen;
n->prefix_set = true;
TAKE_PTR(n);
return 0;
@ -263,7 +287,7 @@ int config_parse_address_label(
return 0;
}
if (k == UINT32_C(0xffffffff)) {
if (k == UINT_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Address label is invalid, ignoring: %s", rvalue);
return 0;
}

5
src/network/networkd-address-label.h
View File

@ -15,9 +15,10 @@ typedef struct AddressLabel {
Network *network;
NetworkConfigSection *section;
unsigned char prefixlen;
uint32_t label;
struct in6_addr in_addr;
struct in6_addr prefix;
unsigned char prefixlen;
bool prefix_set;
} AddressLabel;
AddressLabel *address_label_free(AddressLabel *label);