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Apply patch #8755: Multicast DNS responder support from Erik Ekman

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Erik Ekman 2016-08-14 15:02:15 +02:00 committed by Dirk Ziegelmeier
parent 4af297fc20
commit 4919932c49
13 changed files with 3197 additions and 2 deletions
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1
README
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@ -28,6 +28,7 @@ FEATURES
* raw/native API for enhanced performance
* Optional Berkeley-like socket API
* DNS (Domain names resolver)
* MDNS (Multicast DNS) responder
APPLICATIONS

109
doc/mdns.txt Normal file
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@ -0,0 +1,109 @@
Multicast DNS for lwIP
Author: Erik Ekman
Note! The MDNS responder does not have all features required by the standards.
See notes in src/core/mdns.c for what is left. It is however usable in normal
cases - but watch out if many devices on the same network try to use the same
host/service instance names.
How to enable:
==============
MDNS support does not depend on DNS.
MDNS supports using IPv4 only, v6 only, or v4+v6.
To enable MDNS responder, set
LWIP_MDNS = 1
in lwipopts.h and add src/core/mdns.c to your list of files to build.
The max number of services supported per netif is defined by MDNS_MAX_SERVICES,
default is 1.
Increase MEMP_NUM_UDP_PCB. MDNS needs one PCB for IPv4 and one for IPv6.
MDNS with IPv4 requires LWIP_IGMP = 1, and preferably LWIP_AUTOIP = 1.
MDNS with IPv6 requires LWIP_IPV6_MLD = 1, and that a link-local address is
generated.
The MDNS code puts its structs on the stack where suitable to reduce dynamic
memory allocation. It may use up to 1kB of stack.
MDNS needs a strncasecmp() implementation. If you have one, define
LWIP_MDNS_STRNCASECMP to it. Otherwise the code will provide an implementation
for you.
How to use:
===========
Call mdns_resp_init() during system initialization.
This opens UDP sockets on port 5353 for IPv4 and IPv6.
To start responding on a netif, run
mdns_resp_add_netif(struct netif *netif, char *hostname, u32_t dns_ttl)
The hostname will be copied. If this returns successfully, the netif will join
the multicast groups and any MDNS/legacy DNS requests sent unicast or multicast
to port 5353 will be handled:
- <hostname>.local type A, AAAA or ANY returns relevant IP addresses
- Reverse lookups (PTR in-addr.arpa, ip6.arpa) of netif addresses
returns <hostname>.local
Answers will use the supplied TTL (in seconds)
MDNS allows UTF-8 names, but it is recommended to stay within ASCII,
since the default case-insensitive comparison assumes this.
It is recommended to call this function after an IPv4 address has been set,
since there is currently no check if the v4 address is valid.
To stop responding on a netif, run
mdns_resp_remove_netif(struct netif *netif)
Adding services:
================
The netif first needs to be registered. Then run
mdns_resp_add_service(struct netif *netif, char *name, char *service,
u16_t proto, u16_t port, u32_t dns_ttl,
service_get_txt_fn_t txt_fn, void *txt_userdata);
The name and service pointers will be copied. Name refers to the name of the
service instance, and service is the type of service, like _http
proto can be DNSSD_PROTO_UDP or DNSSD_PROTO_TCP which represent _udp and _tcp.
If this call returns successfully, the following queries will be answered:
- _services._dns-sd._udp.local type PTR returns <service>.<proto>.local
- <service>.<proto>.local type PTR returns <name>.<service>.<proto>.local
- <name>.<service>.<proto>.local type SRV returns hostname and port of service
- <name>.<service>.<proto>.local type TXT builds text strings by calling txt_fn
with the supplied userdata. The callback adds strings to the reply by calling
mdns_resp_add_service_txtitem(struct mdns_service *service, char *txt,
int txt_len). Example callback method:
static void srv_txt(struct mdns_service *service, void *txt_userdata)
{
res = mdns_resp_add_service_txtitem(service, "path=/", 6);
LWIP_ERROR("mdns add service txt failed\n", (res == ERR_OK), return);
}
Since a hostname struct is used for TXT storage each single item can be max
63 bytes long, and the total max length (including length bytes for each
item) is 255 bytes.
If your device runs a webserver on port 80, an example call might be:
mdns_resp_add_service(netif, "myweb", "_http"
DNSSD_PROTO_TCP, 80, 3600, srv_txt, NULL);
which will publish myweb._http._tcp.local for any hosts looking for web servers,
and point them to <hostname>.local:80
Relevant information will be sent as additional records to reduce number of
requests required from a client.
Removing services is currently not supported. Services are removed when the
netif is removed.

4
src/Filelists.mk
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@ -158,6 +158,9 @@ LWIPERFFILES=$(LWIPDIR)/apps/lwiperf/lwiperf.c
# SNTPFILES: SNTP client
SNTPFILES=$(LWIPDIR)/apps/sntp/sntp.c
# MDNSFILES: MDNS responder
MDNSFILES=$(LWIPDIR)/apps/mdns/mdns.c
# NETBIOSNSFILES: NetBIOS name server
NETBIOSNSFILES=$(LWIPDIR)/apps/netbiosns/netbiosns.c
@ -166,4 +169,5 @@ LWIPAPPFILES=$(SNMPFILES) \
$(HTTPDFILES) \
$(LWIPERFFILES) \
$(SNTPFILES) \
$(MDNSFILES) \
$(NETBIOSNSFILES)

2044
src/apps/mdns/mdns.c Normal file
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File diff suppressed because it is too large Load Diff

4
src/core/netif.c
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@ -247,6 +247,10 @@ netif_add(struct netif *netif,
/* netif not under AutoIP control by default */
netif->autoip = NULL;
#endif /* LWIP_AUTOIP */
#if LWIP_MDNS
/* netif not using MDNS by default */
netif->mdns = NULL;
#endif /* LWIP_MDNS */
#if LWIP_IPV6_AUTOCONFIG
/* IPv6 address autoconfiguration not enabled by default */
netif->ip6_autoconfig_enabled = 0;

78
src/include/lwip/apps/mdns.h Normal file
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@ -0,0 +1,78 @@
/*
* Copyright (c) 2015 Verisure Innovation AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Erik Ekman <erik.ekman@verisure.com>
*
*/
#ifndef LWIP_HDR_MDNS_H
#define LWIP_HDR_MDNS_H
#include "lwip/opt.h"
#include "lwip/netif.h"
#if LWIP_MDNS
#define DNSSD_PROTO_UDP 0
#define DNSSD_PROTO_TCP 1
#define MDNS_LABEL_MAXLEN 63
struct mdns_host;
struct mdns_service;
void mdns_resp_init(void);
err_t mdns_resp_add_netif(struct netif *netif, char *hostname, u32_t dns_ttl);
err_t mdns_resp_remove_netif(struct netif *netif);
typedef void (*service_get_txt_fn_t)(struct mdns_service *service, void *txt_userdata);
err_t mdns_resp_add_service(struct netif *netif, char *name, char *service, u16_t proto, u16_t port, u32_t dns_ttl, service_get_txt_fn_t txt_fn, void *txt_userdata);
err_t mdns_resp_add_service_txtitem(struct mdns_service *service, char *txt, int txt_len);
/* Domain struct and methods - visible for unit tests */
#define MDNS_DOMAIN_MAXLEN 256
#define MDNS_READNAME_ERROR 0xFFFF
struct mdns_domain {
/* Encoded domain name */
u8_t name[MDNS_DOMAIN_MAXLEN];
/* Total length of domain name, including zero */
u16_t length;
/* Set if compression of this domain is not allowed */
u8_t skip_compression;
};
err_t mdns_domain_add_label(struct mdns_domain *domain, const char *label, unsigned len);
u16_t mdns_readname(struct pbuf *p, u16_t offset, struct mdns_domain *domain);
int mdns_domain_eq(struct mdns_domain *a, struct mdns_domain *b);
u8_t mdns_compress_domain(struct pbuf *pbuf, u16_t *offset, struct mdns_domain *domain);
#endif /* LWIP_MDNS */
#endif /* LWIP_HDR_MDNS_H */

41
src/include/lwip/apps/mdns_opts.h Normal file
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@ -0,0 +1,41 @@
/*
* File: mdns_opts.h
* Author: dziegel
*
* Created on 13. August 2016, 09:17
*/
#ifndef LWIP_HDR_APPS_MDNS_OPTS_H
#define LWIP_HDR_APPS_MDNS_OPTS_H
/**
* @defgroup mdns_opts Options
* @ingroup mdns
* @{
*/
/**
* LWIP_MDNS==1: Turn on multicast DNS module. UDP must be available for MDNS
* transport. IGMP is needed for IPv4 multicast.
*/
#ifndef LWIP_MDNS
#define LWIP_MDNS 0
#endif /* LWIP_MDNS */
/** The maximum number of services per netif */
#ifndef MDNS_MAX_SERVICES
#define MDNS_MAX_SERVICES 1
#endif
/**
* MDNS_DEBUG: Enable debugging for multicast DNS.
*/
#ifndef MDNS_DEBUG
#define MDNS_DEBUG LWIP_DBG_OFF
#endif
/**
* @}
*/
#endif /* LWIP_HDR_APPS_MDNS_OPTS_H */

8
src/include/lwip/netif.h
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@ -38,6 +38,7 @@
#define LWIP_HDR_NETIF_H
#include "lwip/opt.h"
#include "lwip/apps/mdns_opts.h"
#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
@ -58,6 +59,9 @@ struct autoip;
#if LWIP_IPV6_DHCP6
struct dhcp6;
#endif /* LWIP_IPV6_DHCP6 */
#if LWIP_MDNS
struct mdns_host;
#endif
#ifdef __cplusplus
extern "C" {
@ -255,6 +259,10 @@ struct netif {
/** the AutoIP client state information for this netif */
struct autoip *autoip;
#endif
#if LWIP_MDNS
/** Interface-specific info for multicast DNS */
struct mdns_host *mdns;
#endif /* LWIP_MDNS */
#if LWIP_IPV6_AUTOCONFIG
/** is this netif enabled for IPv6 autoconfiguration */
u8_t ip6_autoconfig_enabled;

7
src/include/lwip/prot/dns.h
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@ -69,12 +69,15 @@ extern "C" {
#define DNS_RRTYPE_MX 15 /* mail exchange */
#define DNS_RRTYPE_TXT 16 /* text strings */
#define DNS_RRTYPE_AAAA 28 /* IPv6 address */
#define DNS_RRTYPE_SRV 33 /* service location */
#define DNS_RRTYPE_ANY 255 /* any type */
/* DNS field CLASS used for "Resource Records" */
#define DNS_RRCLASS_IN 1 /* the Internet */
#define DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */
#define DNS_RRCLASS_CH 3 /* the CHAOS class */
#define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */
#define DNS_RRCLASS_ANY 255 /* any class */
#define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */
/* DNS protocol flags */
@ -90,6 +93,8 @@ extern "C" {
#define DNS_FLAG2_ERR_NONE 0x00
#define DNS_FLAG2_ERR_NAME 0x03
#define DNS_HDR_GET_OPCODE(hdr) ((((hdr)->flags1) >> 3) & 0xF)
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
@ -122,5 +127,5 @@ typedef enum {
}
#endif
#endif /* DNS_H */
#endif /* LWIP_HDR_PROT_DNS_H */

4
test/unit/lwip_unittests.c
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@ -7,6 +7,7 @@
#include "core/test_pbuf.h"
#include "etharp/test_etharp.h"
#include "dhcp/test_dhcp.h"
#include "mdns/test_mdns.h"
#include "lwip/init.h"
@ -42,7 +43,8 @@ int main(void)
mem_suite,
pbuf_suite,
etharp_suite,
dhcp_suite
dhcp_suite,
mdns_suite
};
size_t num = sizeof(suites)/sizeof(void*);
LWIP_ASSERT("No suites defined", num > 0);

4
test/unit/lwipopts.h
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@ -51,6 +51,10 @@
#define TCP_RCV_SCALE 0
#define PBUF_POOL_SIZE 400 /* pbuf tests need ~200KByte */
/* Enable IGMP and MDNS for MDNS tests */
#define LWIP_IGMP 1
#define LWIP_MDNS 1
/* Minimal changes to opt.h required for etharp unit tests: */
#define ETHARP_SUPPORT_STATIC_ENTRIES 1

887
test/unit/mdns/test_mdns.c Normal file
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@ -0,0 +1,887 @@
/*
* Copyright (c) 2015 Verisure Innovation AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Erik Ekman <erik.ekman@verisure.com>
*
* Please coordinate changes and requests with Erik Ekman
* <erik.ekman@verisure.com>
*
*/
#include "test_mdns.h"
#include "lwip/pbuf.h"
#include "lwip/apps/mdns.h"
START_TEST(readname_basic)
{
static const u8_t data[] = { 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x00 };
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == sizeof(data));
fail_unless(domain.length == sizeof(data));
fail_if(memcmp(&domain.name, data, sizeof(data)));
}
END_TEST
START_TEST(readname_anydata)
{
static const u8_t data[] = { 0x05, 0x00, 0xFF, 0x08, 0xc0, 0x0f, 0x04, 0x7f, 0x80, 0x82, 0x88, 0x00 };
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == sizeof(data));
fail_unless(domain.length == sizeof(data));
fail_if(memcmp(&domain.name, data, sizeof(data)));
}
END_TEST
START_TEST(readname_short_buf)
{
static const u8_t data[] = { 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a' };
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_long_label)
{ static const u8_t data[] = {
0x05, 'm', 'u', 'l', 't', 'i',
0x52, 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a',
'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_overflow)
{
static const u8_t data[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_jump_earlier)
{
static const u8_t data[] = {
/* Some padding needed, not supported to jump to bytes containing dns header */
/* 0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 10 */ 0x0f, 0x0e, 0x05, 'l', 'o', 'c', 'a', 'l', 0x00, 0xab,
/* 20 */ 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc0, 0x0c,
};
static const u8_t fullname[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 20, &domain);
pbuf_free(p);
fail_unless(offset == sizeof(data));
fail_unless(domain.length == sizeof(fullname));
fail_if(memcmp(&domain.name, fullname, sizeof(fullname)));
}
END_TEST
START_TEST(readname_jump_earlier_jump)
{
static const u8_t data[] = {
/* Some padding needed, not supported to jump to bytes containing dns header */
/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x03, 0x0b, 0x0a, 0xf2,
/* 0x10 */ 0x04, 'c', 'a', 's', 't', 0x00, 0xc0, 0x10,
/* 0x18 */ 0x05, 'm', 'u', 'l', 't', 'i', 0xc0, 0x16,
};
static const u8_t fullname[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0x18, &domain);
pbuf_free(p);
fail_unless(offset == sizeof(data));
fail_unless(domain.length == sizeof(fullname));
fail_if(memcmp(&domain.name, fullname, sizeof(fullname)));
}
END_TEST
START_TEST(readname_jump_maxdepth)
{
static const u8_t data[] = {
/* Some padding needed, not supported to jump to bytes containing dns header */
/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x03, 0x0b, 0x0a, 0xf2,
/* 0x10 */ 0x04, 'n', 'a', 'm', 'e', 0xc0, 0x27, 0x03,
/* 0x18 */ 0x03, 'd', 'n', 's', 0xc0, 0x10, 0xc0, 0x10,
/* 0x20 */ 0x04, 'd', 'e', 'e', 'p', 0xc0, 0x18, 0x00,
/* 0x28 */ 0x04, 'c', 'a', 's', 't', 0xc0, 0x20, 0xb0,
/* 0x30 */ 0x05, 'm', 'u', 'l', 't', 'i', 0xc0, 0x28,
};
static const u8_t fullname[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't',
0x04, 'd', 'e', 'e', 'p', 0x03, 'd', 'n', 's',
0x04, 'n', 'a', 'm', 'e', 0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0x30, &domain);
pbuf_free(p);
fail_unless(offset == sizeof(data));
fail_unless(domain.length == sizeof(fullname));
fail_if(memcmp(&domain.name, fullname, sizeof(fullname)));
}
END_TEST
START_TEST(readname_jump_later)
{
static const u8_t data[] = {
/* 0x00 */ 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc0, 0x10, 0x00, 0x01, 0x40,
/* 0x10 */ 0x05, 'l', 'o', 'c', 'a', 'l', 0x00, 0xab,
};
static const u8_t fullname[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == 13);
fail_unless(domain.length == sizeof(fullname));
fail_if(memcmp(&domain.name, fullname, sizeof(fullname)));
}
END_TEST
START_TEST(readname_half_jump)
{
static const u8_t data[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc0,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_jump_toolong)
{
static const u8_t data[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc2, 0x10, 0x00, 0x01, 0x40,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 0, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_jump_loop_label)
{
static const u8_t data[] = {
/* 0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 10 */ 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc0, 0x10,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 10, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(readname_jump_loop_jump)
{
static const u8_t data[] = {
/* 0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 10 */ 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0xc0, 0x15,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
offset = mdns_readname(p, 10, &domain);
pbuf_free(p);
fail_unless(offset == MDNS_READNAME_ERROR);
}
END_TEST
START_TEST(add_label_basic)
{
static const u8_t data[] = { 0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x00 };
struct mdns_domain domain;
err_t res;
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(domain.length == sizeof(data));
fail_if(memcmp(&domain.name, data, sizeof(data)));
}
END_TEST
START_TEST(add_label_long_label)
{
static const char *toolong = "abcdefghijklmnopqrstuvwxyz0123456789-abcdefghijklmnopqrstuvwxyz0123456789-abcdefghijklmnopqrstuvwxyz0123456789-";
struct mdns_domain domain;
err_t res;
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, toolong, strlen(toolong));
fail_unless(res == ERR_VAL);
}
END_TEST
START_TEST(add_label_full)
{
static const char *label = "0123456789abcdef0123456789abcdef";
struct mdns_domain domain;
err_t res;
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 33);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 66);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 99);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 132);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 165);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 198);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_OK);
fail_unless(domain.length == 231);
res = mdns_domain_add_label(&domain, label, strlen(label));
fail_unless(res == ERR_VAL);
fail_unless(domain.length == 231);
res = mdns_domain_add_label(&domain, label, 25);
fail_unless(res == ERR_VAL);
fail_unless(domain.length == 231);
res = mdns_domain_add_label(&domain, label, 24);
fail_unless(res == ERR_VAL);
fail_unless(domain.length == 231);
res = mdns_domain_add_label(&domain, label, 23);
fail_unless(res == ERR_OK);
fail_unless(domain.length == 255);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(domain.length == 256);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_VAL);
fail_unless(domain.length == 256);
}
END_TEST
START_TEST(domain_eq_basic)
{
static const u8_t data[] = {
0x05, 'm', 'u', 'l', 't', 'i', 0x04, 'c', 'a', 's', 't', 0x00,
};
struct mdns_domain domain1, domain2;
err_t res;
memset(&domain1, 0, sizeof(domain1));
res = mdns_domain_add_label(&domain1, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(domain1.length == sizeof(data));
memset(&domain2, 0, sizeof(domain2));
res = mdns_domain_add_label(&domain2, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(mdns_domain_eq(&domain1, &domain2));
}
END_TEST
START_TEST(domain_eq_diff)
{
struct mdns_domain domain1, domain2;
err_t res;
memset(&domain1, 0, sizeof(domain1));
res = mdns_domain_add_label(&domain1, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, "base", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, NULL, 0);
fail_unless(res == ERR_OK);
memset(&domain2, 0, sizeof(domain2));
res = mdns_domain_add_label(&domain2, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, NULL, 0);
fail_unless(res == ERR_OK);
fail_if(mdns_domain_eq(&domain1, &domain2));
}
END_TEST
START_TEST(domain_eq_case)
{
struct mdns_domain domain1, domain2;
err_t res;
memset(&domain1, 0, sizeof(domain1));
res = mdns_domain_add_label(&domain1, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, NULL, 0);
fail_unless(res == ERR_OK);
memset(&domain2, 0, sizeof(domain2));
res = mdns_domain_add_label(&domain2, "MulTI", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, "casT", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(mdns_domain_eq(&domain1, &domain2));
}
END_TEST
START_TEST(domain_eq_anydata)
{
static const char data1[] = { 0x05, (char)0xcc, (char)0xdc, 0x00, (char)0xa0 };
static const char data2[] = { 0x7f, (char)0x8c, 0x01, (char)0xff, (char)0xcf };
struct mdns_domain domain1, domain2;
err_t res;
memset(&domain1, 0, sizeof(domain1));
res = mdns_domain_add_label(&domain1, data1, sizeof(data1));
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, "cast", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, data2, sizeof(data2));
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, NULL, 0);
fail_unless(res == ERR_OK);
memset(&domain2, 0, sizeof(domain2));
res = mdns_domain_add_label(&domain2, data1, sizeof(data1));
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, "casT", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, data2, sizeof(data2));
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, NULL, 0);
fail_unless(res == ERR_OK);
fail_unless(mdns_domain_eq(&domain1, &domain2));
}
END_TEST
START_TEST(domain_eq_length)
{
struct mdns_domain domain1, domain2;
err_t res;
memset(&domain1, 0, sizeof(domain1));
memset(domain1.name, 0xAA, sizeof(MDNS_DOMAIN_MAXLEN));
res = mdns_domain_add_label(&domain1, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain1, "cast", 4);
fail_unless(res == ERR_OK);
memset(&domain2, 0, sizeof(domain2));
memset(domain2.name, 0xBB, sizeof(MDNS_DOMAIN_MAXLEN));
res = mdns_domain_add_label(&domain2, "multi", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain2, "cast", 4);
fail_unless(res == ERR_OK);
fail_unless(mdns_domain_eq(&domain1, &domain2));
}
END_TEST
START_TEST(compress_full_match)
{
static const u8_t data[] = {
0x00, 0x00,
0x06, 'f', 'o', 'o', 'b', 'a', 'r', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 0 bytes, then a jump to addr 2 */
fail_unless(length == 0);
fail_unless(offset == 2);
pbuf_free(p);
}
END_TEST
START_TEST(compress_full_match_subset)
{
static const u8_t data[] = {
0x00, 0x00,
0x02, 'g', 'o', 0x06, 'f', 'o', 'o', 'b', 'a', 'r', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 0 bytes, then a jump to addr 5 */
fail_unless(length == 0);
fail_unless(offset == 5);
pbuf_free(p);
}
END_TEST
START_TEST(compress_full_match_jump)
{
static const u8_t data[] = {
/* 0x00 */ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
/* 0x10 */ 0x04, 'l', 'w', 'i', 'p', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00, 0xc0, 0x00, 0x02, 0x00,
/* 0x20 */ 0x06, 'f', 'o', 'o', 'b', 'a', 'r', 0xc0, 0x15,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 0x20;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 0 bytes, then a jump to addr 0x20 */
fail_unless(length == 0);
fail_unless(offset == 0x20);
pbuf_free(p);
}
END_TEST
START_TEST(compress_no_match)
{
static const u8_t data[] = {
0x00, 0x00,
0x04, 'l', 'w', 'i', 'p', 0x05, 'w', 'i', 'k', 'i', 'a', 0x03, 'c', 'o', 'm', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
/* Write all bytes, no jump */
fail_unless(length == domain.length);
pbuf_free(p);
}
END_TEST
START_TEST(compress_2nd_label)
{
static const u8_t data[] = {
0x00, 0x00,
0x06, 'f', 'o', 'o', 'b', 'a', 'r', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "lwip", 4);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 5 bytes, then a jump to addr 9 */
fail_unless(length == 5);
fail_unless(offset == 9);
pbuf_free(p);
}
END_TEST
START_TEST(compress_2nd_label_short)
{
static const u8_t data[] = {
0x00, 0x00,
0x04, 'l', 'w', 'i', 'p', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 5 bytes, then a jump to addr 7 */
fail_unless(length == 7);
fail_unless(offset == 7);
pbuf_free(p);
}
END_TEST
START_TEST(compress_jump_to_jump)
{
static const u8_t data[] = {
/* 0x00 */ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
/* 0x10 */ 0x04, 'l', 'w', 'i', 'p', 0x05, 'l', 'o', 'c', 'a', 'l', 0x00, 0xc0, 0x00, 0x02, 0x00,
/* 0x20 */ 0x07, 'b', 'a', 'n', 'a', 'n', 'a', 's', 0xc0, 0x15,
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 0x20;
length = mdns_compress_domain(p, &offset, &domain);
/* Dont compress if jump would be to a jump */
fail_unless(length == domain.length);
offset = 0x10;
length = mdns_compress_domain(p, &offset, &domain);
/* Write 7 bytes, then a jump to addr 0x15 */
fail_unless(length == 7);
fail_unless(offset == 0x15);
pbuf_free(p);
}
END_TEST
START_TEST(compress_long_match)
{
static const u8_t data[] = {
0x00, 0x00,
0x06, 'f', 'o', 'o', 'b', 'a', 'r', 0x05, 'l', 'o', 'c', 'a', 'l', 0x03, 'c', 'o', 'm', 0x00
};
struct pbuf *p;
struct mdns_domain domain;
u16_t offset;
u8_t length;
err_t res;
p = pbuf_alloc(PBUF_RAW, sizeof(data), PBUF_ROM);
p->payload = (void *)(size_t)data;
fail_if(p == NULL);
memset(&domain, 0, sizeof(domain));
res = mdns_domain_add_label(&domain, "foobar", 6);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, "local", 5);
fail_unless(res == ERR_OK);
res = mdns_domain_add_label(&domain, NULL, 0);
fail_unless(res == ERR_OK);
offset = 2;
length = mdns_compress_domain(p, &offset, &domain);
fail_unless(length == domain.length);
pbuf_free(p);
}
END_TEST
Suite* mdns_suite(void)
{
testfunc tests[] = {
TESTFUNC(readname_basic),
TESTFUNC(readname_anydata),
TESTFUNC(readname_short_buf),
TESTFUNC(readname_long_label),
TESTFUNC(readname_overflow),
TESTFUNC(readname_jump_earlier),
TESTFUNC(readname_jump_earlier_jump),
TESTFUNC(readname_jump_maxdepth),
TESTFUNC(readname_jump_later),
TESTFUNC(readname_half_jump),
TESTFUNC(readname_jump_toolong),
TESTFUNC(readname_jump_loop_label),
TESTFUNC(readname_jump_loop_jump),
TESTFUNC(add_label_basic),
TESTFUNC(add_label_long_label),
TESTFUNC(add_label_full),
TESTFUNC(domain_eq_basic),
TESTFUNC(domain_eq_diff),
TESTFUNC(domain_eq_case),
TESTFUNC(domain_eq_anydata),
TESTFUNC(domain_eq_length),
TESTFUNC(compress_full_match),
TESTFUNC(compress_full_match_subset),
TESTFUNC(compress_full_match_jump),
TESTFUNC(compress_no_match),
TESTFUNC(compress_2nd_label),
TESTFUNC(compress_2nd_label_short),
TESTFUNC(compress_jump_to_jump),
TESTFUNC(compress_long_match),
};
return create_suite("MDNS", tests, sizeof(tests)/sizeof(testfunc), NULL, NULL);
}

8
test/unit/mdns/test_mdns.h Normal file
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#ifndef LWIP_HDR_TEST_MDNS_H__
#define LWIP_HDR_TEST_MDNS_H__
#include "../lwip_check.h"
Suite* mdns_suite(void);
#endif