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Basic DHPC client functionality

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@419 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-11-30 23:15:06 +00:00
parent fedadd3064
commit 929a52b3e0
7 changed files with 80 additions and 23 deletions
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6
ChangeLog
View File

@ -260,4 +260,8 @@
0.3.4 2007-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
* Added netutils/dhcpd
* Added and partially verified DHCP server logic (netutils/dhcpd)
* Fix BROADCAST=y compilation problems
* Fix UDP recvfrom timeout bug
* Correct processing of input UDP broadcast packets.
* Verfied basic DHCP client functionality (netutils/dhcpc)

6
Documentation/NuttX.html
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@ -748,7 +748,11 @@ Other memory:
<pre><ul>
0.3.4 2007-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
* Added netutils/dhcpd
* Added and partially verified DHCP server logic (netutils/dhcpd)
* Fix BROADCAST=y compilation problems
* Fix UDP recvfrom timeout bug
* Correct processing of input UDP broadcast packets.
* Verfied basic DHCP client functionality (netutils/dhcpc)
</pre></ul>
<table width ="100%">

17
examples/uip/main.c
View File

@ -187,10 +187,19 @@ int user_start(int argc, char *argv[])
{
struct dhcpc_state ds;
(void)dhcpc_request(handle, &ds);
uip_sethostaddr("eth0", &ds.ipaddr);
uip_setnetmask("eth0", &ds.netmask);
uip_setdraddr("eth0", &ds.default_router);
resolv_conf(&ds.dnsaddr);
uip_sethostaddr("eth1", &ds.ipaddr);
if (ds.netmask.s_addr != 0)
{
uip_setnetmask("eth0", &ds.netmask);
}
if (ds.default_router.s_addr != 0)
{
uip_setdraddr("eth0", &ds.default_router);
}
if (ds.dnsaddr.s_addr != 0)
{
resolv_conf(&ds.dnsaddr);
}
dhcpc_close(handle);
}
#endif

4
net/uip/uip-initialize.c
View File

@ -70,14 +70,14 @@ const uip_ipaddr_t g_alloneaddr =
#ifdef CONFIG_NET_IPv6
{0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff};
#else
{0xffffffff};
0xffffffff;
#endif
const uip_ipaddr_t g_allzeroaddr =
#ifdef CONFIG_NET_IPv6
{0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000};
#else
{0x00000000};
0x00000000;
#endif
/* Reassembly timer (units: deci-seconds) */

19
netutils/README
View File

@ -1,5 +1,20 @@
netutils
^^^^^^^^
This directory contains most of the network applications contained under the uIP-1.0 apps directory.
As the uIP apps/README says, these applications "are not all heavily tested."
This directory contains most of the network applications contained
under the uIP-1.0 apps directory. As the uIP apps/README says,
these applications "are not all heavily tested." These uIP apps
include:
dhcpc - Dynamic Host Configuration Protocol (DHCP) client
resolv - uIP DNS resolver
smtp - Simple Mail Transfer Protocol (SMTP) client
telnetd - TELNET server
webclient - HTTP web client
webserver - HTTP web server
Additional applications that were not part of uIP (but which are
highly influenced by uIP) include:
dhcpd - Dynamic Host Configuration Protocol (DHCP) server

31
netutils/dhcpc/dhcpc.c
View File

@ -183,18 +183,12 @@ static uint8 *add_end(uint8 *optptr)
static void create_msg(struct dhcpc_state_s *pdhcpc)
{
struct in_addr addr;
memset(&pdhcpc->packet, 0, sizeof(struct dhcp_msg));
pdhcpc->packet.op = DHCP_REQUEST;
pdhcpc->packet.htype = DHCP_HTYPE_ETHERNET;
pdhcpc->packet.hlen = pdhcpc->ds_maclen;
memcpy(pdhcpc->packet.xid, xid, 4);
pdhcpc->packet.flags = HTONS(BOOTP_BROADCAST); /* Broadcast bit. */
uip_gethostaddr("eth0", &addr);
memcpy(&pdhcpc->packet.ciaddr, &addr.s_addr, 4);
memcpy(pdhcpc->packet.chaddr, pdhcpc->ds_macaddr, pdhcpc->ds_maclen);
memset(&pdhcpc->packet.chaddr[pdhcpc->ds_maclen], 0, 16 - pdhcpc->ds_maclen);
memcpy(pdhcpc->packet.options, magic_cookie, sizeof(magic_cookie));
@ -206,13 +200,20 @@ static int send_discover(struct dhcpc_state_s *pdhcpc)
uint8 *pend;
int len;
/* Create the basic message header */
create_msg(pdhcpc);
/* Add the options */
pend = &pdhcpc->packet.options[4];
pend = add_msg_type(pend, DHCPDISCOVER);
pend = add_req_options(pend);
pend = add_end(pend);
len = pend - (uint8*)&pdhcpc->packet;
/* Send the request */
addr.sin_family = AF_INET;
addr.sin_port = HTONS(DHCPC_SERVER_PORT);
addr.sin_addr.s_addr = INADDR_BROADCAST;
@ -226,7 +227,13 @@ static int send_request(struct dhcpc_state_s *pdhcpc, struct dhcpc_state *presul
uint8 *pend;
int len;
/* Create the basic message header */
create_msg(pdhcpc);
memcpy(pdhcpc->packet.ciaddr, &presult->ipaddr.s_addr, 4);
/* Add the options */
pend = &pdhcpc->packet.options[4];
pend = add_msg_type(pend, DHCPREQUEST);
pend = add_server_id(presult, pend);
@ -234,6 +241,8 @@ static int send_request(struct dhcpc_state_s *pdhcpc, struct dhcpc_state *presul
pend = add_end(pend);
len = pend - (uint8*)&pdhcpc->packet;
/* Send the request */
addr.sin_family = AF_INET;
addr.sin_port = HTONS(DHCPC_SERVER_PORT);
addr.sin_addr.s_addr = INADDR_BROADCAST;
@ -336,7 +345,7 @@ void *dhcpc_open(const void *macaddr, int maclen)
/* Configure for read timeouts */
tv.tv_sec = 30;
tv.tv_sec = 10;
tv.tv_usec = 0;
if (setsockopt(pdhcpc->sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(struct timeval)) < 0)
{
@ -361,9 +370,15 @@ void dhcpc_close(void *handle)
int dhcpc_request(void *handle, struct dhcpc_state *presult)
{
struct dhcpc_state_s *pdhcpc = (struct dhcpc_state_s *)handle;
struct in_addr oldaddr;
ssize_t result;
int state;
/* Save the currently assigned IP address (should be zero) */
oldaddr.s_addr = 0;
uip_gethostaddr("eth0", &oldaddr);
/* Loop until we receive the offer */
do
@ -386,6 +401,7 @@ int dhcpc_request(void *handle, struct dhcpc_state *presult)
{
if (parse_msg(pdhcpc, result, presult) == DHCPOFFER)
{
(void)uip_sethostaddr("eth0", &presult->ipaddr);
state = STATE_OFFER_RECEIVED;
}
}
@ -421,6 +437,7 @@ int dhcpc_request(void *handle, struct dhcpc_state *presult)
{
/* An error other than a timeout was received */
(void)uip_sethostaddr("eth0", &oldaddr);
return ERROR;
}
}

20
netutils/dhcpd/dhcpd.c
View File

@ -692,8 +692,8 @@ static inline int dhcpd_socket(void)
int sockfd;
#if defined(HAVE_SO_REUSEADDR) || defined(HAVE_SO_BROADCAST)
int optval;
#endif
int ret;
#endif
/* Create a socket to listen for requests from DHCP clients */
@ -815,6 +815,7 @@ static int dhcpd_sendpacket(int bbroadcast)
struct sockaddr_in addr;
in_addr_t ipaddr;
int sockfd;
int len;
int ret = ERROR;
/* Determine which address to respond to (or if we need to broadcast the response) */
@ -850,8 +851,10 @@ static int dhcpd_sendpacket(int bbroadcast)
addr.sin_port = HTONS(DHCP_CLIENT_PORT);
addr.sin_addr.s_addr = ipaddr;
ret = sendto(sockfd,
&g_state.ds_outpacket, sizeof(struct dhcpmsg_s), 0,
/* Send the minimum sized packet that includes the END option */
len = (g_state.ds_optend - (uint8*)&g_state.ds_outpacket) + 1;
ret = sendto(sockfd, &g_state.ds_outpacket, len, 0,
(struct sockaddr *)&addr, sizeof(struct sockaddr_in));
close(sockfd);
}
@ -1031,9 +1034,8 @@ static inline int dhcpd_request(void)
* already offered to the client.
*/
if (g_state.ds_optserverip == g_state.ds_serverip &&
g_state.ds_optreqip != 0 &&
g_state.ds_optreqip == ipaddr)
if (g_state.ds_optserverip == ntohl(g_state.ds_serverip) &&
(g_state.ds_optreqip != 0 || g_state.ds_optreqip == ipaddr))
{
response = DHCPACK;
}
@ -1278,6 +1280,12 @@ int dhcpd_run(void)
continue;
}
#ifdef CONFIG_NETUTILS_DHCPD_HOST
/* Get the poor little uC a change to get its recvfrom in place */
sleep(2);
#endif
/* Now process the incoming DHCP message by its message type */
switch (g_state.ds_optmsgtype)