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Merge pull request #14064 from yuwata/network-unify-send-option-and-send-raw-option

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network: unify SendOption= and SendRawOption=
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2019-11-18 22:21:37 +01:00 committed by GitHub
commit b014a6161a
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20 changed files with 289 additions and 473 deletions
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34
man/systemd.network.xml
View File

@ -1643,14 +1643,13 @@
<term><varname>SendOption=</varname></term>
<listitem>
<para>Send an arbitrary option in the DHCPv4 request. Takes a DHCP option number, data type
and data separated with a colon (<literal><replaceable>option</replaceable>:
<replaceable>type</replaceable>:<replaceable>value</replaceable></literal>). The option
number must be an interger in the range 1..254. The type takes one of
<literal>uint8</literal>, <literal>uint16</literal>, <literal>uint32</literal>,
<literal>ipv4address</literal>, or <literal>string</literal>.
Special characters in the data string may be escaped using
and data separated with a colon
(<literal><replaceable>option</replaceable>:<replaceable>type</replaceable>:<replaceable>value</replaceable></literal>).
The option number must be an interger in the range 1..254. The type takes one of <literal>uint8</literal>,
<literal>uint16</literal>, <literal>uint32</literal>, <literal>ipv4address</literal>, or
<literal>string</literal>. Special characters in the data string may be escaped using
<ulink url="https://en.wikipedia.org/wiki/Escape_sequences_in_C#Table_of_escape_sequences">C-style
escapes</ulink>. This option can be specified multiple times. If an empty string is specified,
escapes</ulink>. This setting can be specified multiple times. If an empty string is specified,
then all options specified earlier are cleared. Defaults to unset.</para>
</listitem>
</varlistentry>
@ -1905,16 +1904,17 @@
</varlistentry>
<varlistentry>
<term><varname>SendRawOption=</varname></term>
<listitem>
<para>Send a raw option with value via DHCPv4 server. Takes a DHCP option, data type and data
(option:type:value). The option ranges [1-254]. The type takes one of <literal>uint8</literal>,
<literal>uint16</literal>, <literal>uint32</literal>, <literal>ipv4address</literal>, or <literal>string</literal>.
Special characters in the data string may be escaped using
<ulink url="https://en.wikipedia.org/wiki/Escape_sequences_in_C#Table_of_escape_sequences">C-style
escapes</ulink>. This option can be specified multiple times. If an empty string is specified, then all
options specified earlier are cleared. Defaults to unset.</para>
</listitem>
<term><varname>SendOption=</varname></term>
<listitem>
<para>Send a raw option with value via DHCPv4 server. Takes a DHCP option number, data type
and data (<literal><replaceable>option</replaceable>:<replaceable>type</replaceable>:<replaceable>value</replaceable></literal>).
The option number is an integer in the range 1..254. The type takes one of <literal>uint8</literal>,
<literal>uint16</literal>, <literal>uint32</literal>, <literal>ipv4address</literal>, or
<literal>string</literal>. Special characters in the data string may be escaped using
<ulink url="https://en.wikipedia.org/wiki/Escape_sequences_in_C#Table_of_escape_sequences">C-style
escapes</ulink>. This setting can be specified multiple times. If an empty string is specified,
then all options specified earlier are cleared. Defaults to unset.</para>
</listitem>
</varlistentry>
</variablelist>

10
src/libsystemd-network/dhcp-internal.h
View File

@ -15,6 +15,16 @@
#include "dhcp-protocol.h"
#include "socket-util.h"
typedef struct sd_dhcp_option {
unsigned n_ref;
uint8_t option;
void *data;
size_t length;
} sd_dhcp_option;
extern const struct hash_ops dhcp_option_hash_ops;
int dhcp_network_bind_raw_socket(int ifindex, union sockaddr_union *link,
uint32_t xid, const uint8_t *mac_addr,
size_t mac_addr_len, uint16_t arp_type,

44
src/libsystemd-network/dhcp-option.c
View File

@ -79,7 +79,7 @@ static int option_append(uint8_t options[], size_t size, size_t *offset,
break;
case SD_DHCP_OPTION_VENDOR_SPECIFIC: {
OrderedHashmap *s = (OrderedHashmap *) optval;
struct sd_dhcp_raw_option *p;
struct sd_dhcp_option *p;
size_t l = 0;
Iterator i;
@ -95,7 +95,7 @@ static int option_append(uint8_t options[], size_t size, size_t *offset,
*offset += 2;
ORDERED_HASHMAP_FOREACH(p, s, i) {
options[*offset] = p->type;
options[*offset] = p->option;
options[*offset + 1] = p->length;
memcpy(&options[*offset + 2], p->data, p->length);
*offset += 2 + p->length;
@ -315,3 +315,43 @@ int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_callback_t c
return message_type;
}
static sd_dhcp_option* dhcp_option_free(sd_dhcp_option *i) {
if (!i)
return NULL;
free(i->data);
return mfree(i);
}
int sd_dhcp_option_new(uint8_t option, const void *data, size_t length, sd_dhcp_option **ret) {
assert_return(ret, -EINVAL);
assert_return(length == 0 || data, -EINVAL);
_cleanup_free_ void *q = memdup(data, length);
if (!q)
return -ENOMEM;
sd_dhcp_option *p = new(sd_dhcp_option, 1);
if (!p)
return -ENOMEM;
*p = (sd_dhcp_option) {
.n_ref = 1,
.option = option,
.length = length,
.data = TAKE_PTR(q),
};
*ret = TAKE_PTR(p);
return 0;
}
DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_option, sd_dhcp_option, dhcp_option_free);
DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
dhcp_option_hash_ops,
void,
trivial_hash_func,
trivial_compare_func,
sd_dhcp_option,
sd_dhcp_option_unref);

9
src/libsystemd-network/dhcp-server-internal.h
View File

@ -37,15 +37,6 @@ typedef struct DHCPLease {
usec_t expiration;
} DHCPLease;
struct sd_dhcp_raw_option {
unsigned n_ref;
uint8_t type;
uint8_t length;
void *data;
};
struct sd_dhcp_server {
unsigned n_ref;

48
src/libsystemd-network/sd-dhcp-client.c
View File

@ -34,14 +34,6 @@
#define RESTART_AFTER_NAK_MIN_USEC (1 * USEC_PER_SEC)
#define RESTART_AFTER_NAK_MAX_USEC (30 * USEC_PER_MINUTE)
struct sd_dhcp_option {
unsigned n_ref;
uint8_t option;
void *data;
size_t length;
};
struct sd_dhcp_client {
unsigned n_ref;
@ -548,46 +540,6 @@ int sd_dhcp_client_set_max_attempts(sd_dhcp_client *client, uint64_t max_attempt
return 0;
}
static sd_dhcp_option* dhcp_option_free(sd_dhcp_option *i) {
if (!i)
return NULL;
free(i->data);
return mfree(i);
}
int sd_dhcp_option_new(uint8_t option, void *data, size_t length, sd_dhcp_option **ret) {
assert_return(ret, -EINVAL);
assert_return(length == 0 || data, -EINVAL);
_cleanup_free_ void *q = memdup(data, length);
if (!q)
return -ENOMEM;
sd_dhcp_option *p = new(sd_dhcp_option, 1);
if (!p)
return -ENOMEM;
*p = (sd_dhcp_option) {
.n_ref = 1,
.option = option,
.length = length,
.data = TAKE_PTR(q),
};
*ret = TAKE_PTR(p);
return 0;
}
DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_option, sd_dhcp_option, dhcp_option_free);
DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
dhcp_option_hash_ops,
void,
trivial_hash_func,
trivial_compare_func,
sd_dhcp_option,
sd_dhcp_option_unref);
int sd_dhcp_client_set_dhcp_option(sd_dhcp_client *client, sd_dhcp_option *v) {
int r;

46
src/libsystemd-network/sd-dhcp-server.c
View File

@ -127,46 +127,6 @@ int client_id_compare_func(const DHCPClientId *a, const DHCPClientId *b) {
DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(dhcp_lease_hash_ops, DHCPClientId, client_id_hash_func, client_id_compare_func,
DHCPLease, dhcp_lease_free);
static sd_dhcp_raw_option* raw_option_free(sd_dhcp_raw_option *i) {
if (!i)
return NULL;
free(i->data);
return mfree(i);
}
_public_ int sd_dhcp_raw_option_new(uint8_t type, char *data, size_t length, sd_dhcp_raw_option **ret) {
_cleanup_(sd_dhcp_raw_option_unrefp) sd_dhcp_raw_option *p = NULL;
assert_return(ret, -EINVAL);
p = new(sd_dhcp_raw_option, 1);
if (!p)
return -ENOMEM;
*p = (sd_dhcp_raw_option) {
.n_ref = 1,
.data = memdup(data, length),
.length = length,
.type = type,
};
if (!p->data)
return -ENOMEM;
*ret = TAKE_PTR(p);
return 0;
}
DEFINE_TRIVIAL_REF_UNREF_FUNC(sd_dhcp_raw_option, sd_dhcp_raw_option, raw_option_free);
DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
dhcp_raw_options_hash_ops,
void,
trivial_hash_func,
trivial_compare_func,
sd_dhcp_raw_option,
sd_dhcp_raw_option_unref);
static sd_dhcp_server *dhcp_server_free(sd_dhcp_server *server) {
assert(server);
@ -1222,13 +1182,13 @@ int sd_dhcp_server_set_emit_router(sd_dhcp_server *server, int enabled) {
return 1;
}
int sd_dhcp_server_add_raw_option(sd_dhcp_server *server, sd_dhcp_raw_option *v) {
int sd_dhcp_server_add_option(sd_dhcp_server *server, sd_dhcp_option *v) {
int r;
assert_return(server, -EINVAL);
assert_return(v, -EINVAL);
r = ordered_hashmap_ensure_allocated(&server->raw_option, &dhcp_raw_options_hash_ops);
r = ordered_hashmap_ensure_allocated(&server->raw_option, &dhcp_option_hash_ops);
if (r < 0)
return -ENOMEM;
@ -1236,7 +1196,7 @@ int sd_dhcp_server_add_raw_option(sd_dhcp_server *server, sd_dhcp_raw_option *v)
if (r < 0)
return r;
sd_dhcp_raw_option_ref(v);
sd_dhcp_option_ref(v);
return 1;
}

163
src/network/networkd-dhcp-common.c
View File

@ -1,5 +1,7 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include "dhcp-internal.h"
#include "escape.h"
#include "in-addr-util.h"
#include "networkd-dhcp-common.h"
#include "networkd-network.h"
@ -263,6 +265,167 @@ int config_parse_dhcp6_pd_hint(
return 0;
}
int config_parse_dhcp_send_option(
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_(sd_dhcp_option_unrefp) sd_dhcp_option *opt = NULL, *old = NULL;
_cleanup_free_ char *word = NULL, *q = NULL;
OrderedHashmap **options = userdata;
union in_addr_union addr;
DHCPOptionDataType type;
uint8_t u, uint8_data;
uint16_t uint16_data;
uint32_t uint32_data;
const void *udata;
const char *p;
ssize_t sz;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
*options = ordered_hashmap_free(*options);
return 0;
}
p = rvalue;
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP option, ignoring assignment: %s", rvalue);
return 0;
}
r = safe_atou8(word, &u);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP option, ignoring assignment: %s", rvalue);
return 0;
}
if (u < 1 || u >= 255) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP option, valid range is 1-254, ignoring assignment: %s", rvalue);
return 0;
}
free(word);
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP option, ignoring assignment: %s", rvalue);
return 0;
}
type = dhcp_option_data_type_from_string(word);
if (type < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP option data type, ignoring assignment: %s", p);
return 0;
}
switch(type) {
case DHCP_OPTION_DATA_UINT8:{
r = safe_atou8(p, &uint8_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint8 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint8_data;
sz = sizeof(uint8_t);
break;
}
case DHCP_OPTION_DATA_UINT16:{
r = safe_atou16(p, &uint16_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint16 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint16_data;
sz = sizeof(uint16_t);
break;
}
case DHCP_OPTION_DATA_UINT32: {
r = safe_atou32(p, &uint32_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint32 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint32_data;
sz = sizeof(uint32_t);
break;
}
case DHCP_OPTION_DATA_IPV4ADDRESS: {
r = in_addr_from_string(AF_INET, p, &addr);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 ipv4address data, ignoring assignment: %s", p);
return 0;
}
udata = &addr.in;
sz = sizeof(addr.in.s_addr);
break;
}
case DHCP_OPTION_DATA_STRING:
sz = cunescape(p, 0, &q);
if (sz < 0) {
log_syntax(unit, LOG_ERR, filename, line, sz,
"Failed to decode DHCPv4 option data, ignoring assignment: %s", p);
}
udata = q;
break;
default:
return -EINVAL;
}
r = sd_dhcp_option_new(u, udata, sz, &opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCPv4 option '%s', ignoring assignment: %m", rvalue);
return 0;
}
r = ordered_hashmap_ensure_allocated(options, &dhcp_option_hash_ops);
if (r < 0)
return log_oom();
/* Overwrite existing option */
old = ordered_hashmap_remove(*options, UINT_TO_PTR(u));
r = ordered_hashmap_put(*options, UINT_TO_PTR(u), opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCPv4 option '%s', ignoring assignment: %m", rvalue);
return 0;
}
TAKE_PTR(opt);
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_use_domains, dhcp_use_domains, DHCPUseDomains,
"Failed to parse DHCP use domains setting");

1
src/network/networkd-dhcp-common.h
View File

@ -48,3 +48,4 @@ CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_use_sip);
CONFIG_PARSER_PROTOTYPE(config_parse_iaid);
CONFIG_PARSER_PROTOTYPE(config_parse_section_route_table);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp6_pd_hint);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_send_option);

171
src/network/networkd-dhcp-server.c
View File

@ -2,7 +2,6 @@
#include "sd-dhcp-server.h"
#include "escape.h"
#include "networkd-dhcp-server.h"
#include "networkd-link.h"
#include "networkd-manager.h"
@ -192,7 +191,7 @@ static int link_push_uplink_sip_to_dhcp_server(Link *link, sd_dhcp_server *s) {
int dhcp4_server_configure(Link *link) {
bool acquired_uplink = false;
sd_dhcp_raw_option *p;
sd_dhcp_option *p;
Link *uplink = NULL;
Address *address;
Iterator i;
@ -305,8 +304,8 @@ int dhcp4_server_configure(Link *link) {
return log_link_error_errno(link, r, "Failed to set timezone for DHCP server: %m");
}
ORDERED_HASHMAP_FOREACH(p, link->network->dhcp_server_raw_options, i) {
r = sd_dhcp_server_add_raw_option(link->dhcp_server, p);
ORDERED_HASHMAP_FOREACH(p, link->network->dhcp_server_send_options, i) {
r = sd_dhcp_server_add_option(link->dhcp_server, p);
if (r == -EEXIST)
continue;
if (r < 0)
@ -479,167 +478,3 @@ int config_parse_dhcp_server_sip(
n->dhcp_server_sip = m;
}
}
int config_parse_dhcp_server_raw_option_data(
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_(sd_dhcp_raw_option_unrefp) sd_dhcp_raw_option *opt = NULL, *old = NULL;
_cleanup_free_ char *word = NULL, *q = NULL;
union in_addr_union addr;
DHCPOptionDataType type;
Network *network = data;
uint16_t uint16_data;
uint32_t uint32_data;
uint8_t uint8_data;
const char *p;
void *udata;
ssize_t sz;
uint8_t u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
network->dhcp_server_raw_options = ordered_hashmap_free(network->dhcp_server_raw_options);
return 0;
}
p = rvalue;
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP server send raw option, ignoring assignment: %s", rvalue);
return 0;
}
r = safe_atou8(word, &u);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCP server send raw option type, ignoring assignment: %s", rvalue);
return 0;
}
if (u < 1 || u >= 255) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP server send raw option, valid range is 1-254, ignoring assignment: %s", rvalue);
return 0;
}
free(word);
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP server send raw option, ignoring assignment: %s", rvalue);
return 0;
}
type = dhcp_option_data_type_from_string(word);
if (type < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP server send data type, ignoring assignment: %s", p);
return 0;
}
switch(type) {
case DHCP_OPTION_DATA_UINT8:{
r = safe_atou8(p, &uint8_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 vendor specific uint8 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint8_data;
sz = sizeof(uint8_t);
break;
}
case DHCP_OPTION_DATA_UINT16:{
r = safe_atou16(p, &uint16_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 vendor specific uint16 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint16_data;
sz = sizeof(uint16_t);
break;
}
case DHCP_OPTION_DATA_UINT32: {
r = safe_atou32(p, &uint32_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 vendor specific uint32 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint32_data;
sz = sizeof(uint32_t);
break;
}
case DHCP_OPTION_DATA_IPV4ADDRESS: {
r = in_addr_from_string(AF_INET, p, &addr);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 vendor specific ipv4address data, ignoring assignment: %s", p);
return 0;
}
udata = &addr.in;
sz = sizeof(addr.in.s_addr);
break;
}
case DHCP_OPTION_DATA_STRING:
sz = cunescape(p, 0, &q);
if (sz < 0) {
log_syntax(unit, LOG_ERR, filename, line, sz,
"Failed to decode option data, ignoring assignment: %s", p);
}
udata = q;
break;
default:
return -EINVAL;
}
r = sd_dhcp_raw_option_new(u, udata, sz, &opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCP send raw option '%s', ignoring assignment: %m", rvalue);
return 0;
}
r = ordered_hashmap_ensure_allocated(&network->dhcp_server_raw_options, &dhcp_raw_options_hash_ops);
if (r < 0)
return log_oom();
/* Overwrite existing option */
old = ordered_hashmap_remove(network->dhcp_server_raw_options, UINT_TO_PTR(u));
r = ordered_hashmap_put(network->dhcp_server_raw_options, UINT_TO_PTR(u), opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCP server send raw option '%s'", rvalue);
return 0;
}
TAKE_PTR(opt);
return 0;
}

1
src/network/networkd-dhcp-server.h
View File

@ -12,4 +12,3 @@ int dhcp4_server_configure(Link *link);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_dns);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_ntp);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_sip);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_server_raw_option_data);

164
src/network/networkd-dhcp4.c
View File

@ -6,7 +6,6 @@
#include "alloc-util.h"
#include "dhcp-client-internal.h"
#include "escape.h"
#include "hostname-util.h"
#include "parse-util.h"
#include "network-internal.h"
@ -1295,7 +1294,7 @@ int dhcp4_configure(Link *link) {
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set request flag for '%u': %m", option);
}
ORDERED_HASHMAP_FOREACH(send_option, link->network->dhcp_send_options, i) {
ORDERED_HASHMAP_FOREACH(send_option, link->network->dhcp_client_send_options, i) {
r = sd_dhcp_client_set_dhcp_option(link->dhcp_client, send_option);
if (r < 0)
return log_link_error_errno(link, r, "DHCP4 CLIENT: Failed to set send option: %m");
@ -1566,167 +1565,6 @@ int config_parse_dhcp_request_options(
return 0;
}
int config_parse_dhcp_send_option(
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_(sd_dhcp_option_unrefp) sd_dhcp_option *opt = NULL, *old = NULL;
_cleanup_free_ char *word = NULL, *q = NULL;
union in_addr_union addr;
DHCPOptionDataType type;
Network *network = data;
uint8_t u, uint8_data;
uint16_t uint16_data;
uint32_t uint32_data;
const char *p;
void *udata;
ssize_t sz;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
network->dhcp_send_options = ordered_hashmap_free(network->dhcp_send_options);
return 0;
}
p = rvalue;
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP send option, ignoring assignment: %s", rvalue);
return 0;
}
r = safe_atou8(word, &u);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP send option, ignoring assignment: %s", rvalue);
return 0;
}
if (u < 1 || u >= 255) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP send option, valid range is 1-254, ignoring assignment: %s", rvalue);
return 0;
}
free(word);
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Invalid DHCP send option, ignoring assignment: %s", rvalue);
return 0;
}
type = dhcp_option_data_type_from_string(word);
if (type < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid DHCP send data type, ignoring assignment: %s", p);
return 0;
}
switch(type) {
case DHCP_OPTION_DATA_UINT8:{
r = safe_atou8(p, &uint8_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint8 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint8_data;
sz = sizeof(uint8_t);
break;
}
case DHCP_OPTION_DATA_UINT16:{
r = safe_atou16(p, &uint16_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint16 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint16_data;
sz = sizeof(uint16_t);
break;
}
case DHCP_OPTION_DATA_UINT32: {
r = safe_atou32(p, &uint32_data);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 uint32 data, ignoring assignment: %s", p);
return 0;
}
udata = &uint32_data;
sz = sizeof(uint32_t);
break;
}
case DHCP_OPTION_DATA_IPV4ADDRESS: {
r = in_addr_from_string(AF_INET, p, &addr);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse DHCPv4 ipv4address data, ignoring assignment: %s", p);
return 0;
}
udata = &addr.in;
sz = sizeof(addr.in.s_addr);
break;
}
case DHCP_OPTION_DATA_STRING:
sz = cunescape(p, 0, &q);
if (sz < 0) {
log_syntax(unit, LOG_ERR, filename, line, sz,
"Failed to decode option data, ignoring assignment: %s", p);
}
udata = q;
break;
default:
return -EINVAL;
}
r = sd_dhcp_option_new(u, udata, sz, &opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCP send option '%s', ignoring assignment: %m", rvalue);
return 0;
}
r = ordered_hashmap_ensure_allocated(&network->dhcp_send_options, &dhcp_option_hash_ops);
if (r < 0)
return log_oom();
/* Overwrite existing option */
old = ordered_hashmap_remove(network->dhcp_send_options, UINT_TO_PTR(u));
r = ordered_hashmap_put(network->dhcp_send_options, UINT_TO_PTR(u), opt);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to store DHCP send option '%s'", rvalue);
return 0;
}
TAKE_PTR(opt);
return 0;
}
static const char* const dhcp_client_identifier_table[_DHCP_CLIENT_ID_MAX] = {
[DHCP_CLIENT_ID_MAC] = "mac",
[DHCP_CLIENT_ID_DUID] = "duid",

1
src/network/networkd-dhcp4.h
View File

@ -27,4 +27,3 @@ CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_black_listed_ip_address);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_max_attempts);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_user_class);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_request_options);
CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_send_option);

4
src/network/networkd-network-gperf.gperf
View File

@ -175,7 +175,7 @@ DHCPv4.ListenPort, config_parse_uint16,
DHCPv4.SendRelease, config_parse_bool, 0, offsetof(Network, dhcp_send_release)
DHCPv4.BlackList, config_parse_dhcp_black_listed_ip_address, 0, 0
DHCPv4.IPServiceType, config_parse_ip_service_type, 0, offsetof(Network, ip_service_type)
DHCPv4.SendOption, config_parse_dhcp_send_option, 0, 0
DHCPv4.SendOption, config_parse_dhcp_send_option, 0, offsetof(Network, dhcp_client_send_options)
DHCPv6.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp6_use_dns)
DHCPv6.UseNTP, config_parse_bool, 0, offsetof(Network, dhcp6_use_ntp)
DHCPv6.RapidCommit, config_parse_bool, 0, offsetof(Network, rapid_commit)
@ -200,7 +200,7 @@ DHCPServer.EmitTimezone, config_parse_bool,
DHCPServer.Timezone, config_parse_timezone, 0, offsetof(Network, dhcp_server_timezone)
DHCPServer.PoolOffset, config_parse_uint32, 0, offsetof(Network, dhcp_server_pool_offset)
DHCPServer.PoolSize, config_parse_uint32, 0, offsetof(Network, dhcp_server_pool_size)
DHCPServer.SendRawOption, config_parse_dhcp_server_raw_option_data, 0, 0
DHCPServer.SendOption, config_parse_dhcp_send_option, 0, offsetof(Network, dhcp_server_send_options)
Bridge.Cost, config_parse_uint32, 0, offsetof(Network, cost)
Bridge.UseBPDU, config_parse_tristate, 0, offsetof(Network, use_bpdu)
Bridge.HairPin, config_parse_tristate, 0, offsetof(Network, hairpin)

4
src/network/networkd-network.c
View File

@ -686,8 +686,8 @@ static Network *network_free(Network *network) {
set_free_free(network->dnssec_negative_trust_anchors);
ordered_hashmap_free(network->dhcp_send_options);
ordered_hashmap_free(network->dhcp_server_raw_options);
ordered_hashmap_free(network->dhcp_client_send_options);
ordered_hashmap_free(network->dhcp_server_send_options);
return mfree(network);
}

4
src/network/networkd-network.h
View File

@ -114,8 +114,8 @@ struct Network {
DHCPUseDomains dhcp_use_domains;
Set *dhcp_black_listed_ip;
Set *dhcp_request_options;
OrderedHashmap *dhcp_send_options;
OrderedHashmap *dhcp_server_raw_options;
OrderedHashmap *dhcp_client_send_options;
OrderedHashmap *dhcp_server_send_options;
/* DHCPv6 Client support*/
bool dhcp6_use_dns;

1
src/systemd/meson.build
View File

@ -22,6 +22,7 @@ _not_installed_headers = '''
sd-dhcp6-lease.h
sd-dhcp-client.h
sd-dhcp-lease.h
sd-dhcp-option.h
sd-dhcp-server.h
sd-ipv4acd.h
sd-ipv4ll.h

6
src/systemd/sd-dhcp-client.h
View File

@ -26,6 +26,7 @@
#include <stdbool.h>
#include "sd-dhcp-lease.h"
#include "sd-dhcp-option.h"
#include "sd-event.h"
#include "_sd-common.h"
@ -99,7 +100,6 @@ enum {
};
typedef struct sd_dhcp_client sd_dhcp_client;
typedef struct sd_dhcp_option sd_dhcp_option;
typedef int (*sd_dhcp_client_callback_t)(sd_dhcp_client *client, int event, void *userdata);
int sd_dhcp_client_set_callback(
@ -179,9 +179,6 @@ int sd_dhcp_client_set_service_type(
sd_dhcp_client *client,
int type);
int sd_dhcp_option_new(uint8_t option, void *data, size_t length, sd_dhcp_option **ret);
sd_dhcp_option* sd_dhcp_option_ref(sd_dhcp_option *i);
sd_dhcp_option* sd_dhcp_option_unref(sd_dhcp_option *i);
int sd_dhcp_client_set_dhcp_option(sd_dhcp_client *client, sd_dhcp_option *v);
int sd_dhcp_client_stop(sd_dhcp_client *client);
@ -204,7 +201,6 @@ int sd_dhcp_client_detach_event(sd_dhcp_client *client);
sd_event *sd_dhcp_client_get_event(sd_dhcp_client *client);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dhcp_client, sd_dhcp_client_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dhcp_option, sd_dhcp_option_unref);
_SD_END_DECLARATIONS;

38
src/systemd/sd-dhcp-option.h Normal file
View File

@ -0,0 +1,38 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#ifndef foosddhcpoptionhfoo
#define foosddhcpoptionhfoo
/***
Copyright © 2013 Intel Corporation. All rights reserved.
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 <inttypes.h>
#include <sys/types.h>
#include "_sd-common.h"
_SD_BEGIN_DECLARATIONS;
typedef struct sd_dhcp_option sd_dhcp_option;
int sd_dhcp_option_new(uint8_t option, const void *data, size_t length, sd_dhcp_option **ret);
sd_dhcp_option *sd_dhcp_option_ref(sd_dhcp_option *ra);
sd_dhcp_option *sd_dhcp_option_unref(sd_dhcp_option *ra);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dhcp_option, sd_dhcp_option_unref);
_SD_END_DECLARATIONS;
#endif

11
src/systemd/sd-dhcp-server.h
View File

@ -21,26 +21,20 @@
#include <inttypes.h>
#include <netinet/in.h>
#include "sd-dhcp-option.h"
#include "sd-event.h"
#include "_sd-common.h"
_SD_BEGIN_DECLARATIONS;
extern const struct hash_ops dhcp_raw_options_hash_ops;
typedef struct sd_dhcp_server sd_dhcp_server;
typedef struct sd_dhcp_raw_option sd_dhcp_raw_option;
int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex);
sd_dhcp_server *sd_dhcp_server_ref(sd_dhcp_server *server);
sd_dhcp_server *sd_dhcp_server_unref(sd_dhcp_server *server);
int sd_dhcp_raw_option_new(uint8_t type, char *data, size_t lengt, sd_dhcp_raw_option **ret);
sd_dhcp_raw_option *sd_dhcp_raw_option_ref(sd_dhcp_raw_option *ra);
sd_dhcp_raw_option *sd_dhcp_raw_option_unref(sd_dhcp_raw_option *ra);
int sd_dhcp_server_attach_event(sd_dhcp_server *client, sd_event *event, int64_t priority);
int sd_dhcp_server_detach_event(sd_dhcp_server *client);
sd_event *sd_dhcp_server_get_event(sd_dhcp_server *client);
@ -58,7 +52,7 @@ int sd_dhcp_server_set_ntp(sd_dhcp_server *server, const struct in_addr ntp[], u
int sd_dhcp_server_set_sip(sd_dhcp_server *server, const struct in_addr sip[], unsigned n);
int sd_dhcp_server_set_emit_router(sd_dhcp_server *server, int enabled);
int sd_dhcp_server_add_raw_option(sd_dhcp_server *server, sd_dhcp_raw_option *v);
int sd_dhcp_server_add_option(sd_dhcp_server *server, sd_dhcp_option *v);
int sd_dhcp_server_set_max_lease_time(sd_dhcp_server *server, uint32_t t);
int sd_dhcp_server_set_default_lease_time(sd_dhcp_server *server, uint32_t t);
@ -66,7 +60,6 @@ int sd_dhcp_server_set_default_lease_time(sd_dhcp_server *server, uint32_t t);
int sd_dhcp_server_forcerenew(sd_dhcp_server *server);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dhcp_server, sd_dhcp_server_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_dhcp_raw_option, sd_dhcp_raw_option_unref);
_SD_END_DECLARATIONS;

2
test/fuzz/fuzz-network-parser/directives.network
View File

@ -259,7 +259,7 @@ MaxLeaseTimeSec=
DefaultLeaseTimeSec=
EmitTimezone=
DNS=
SendRawOption=
SendOption=
[NextHop]
Id=
Gateway=