mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-12-26 14:18:20 +00:00
Patch from Eric Norum <eric@skatter.usask.ca>:
1) Socket timeout field changed from `short' to `long'. This makes longer
timeouts possible. With a 1 kHz system clock the old system allowed
timeouts only up to a little over 30 seconds! This change is a
slightly cleaned-up version of the patch proposed by Ian Lance Taylor.
2) Major changes to BOOTP/DHCP reply handling. Now supports much of
RFC2132. These changes were done at the request of, and with the
assistance of, Erik Ivanenko.
If you're making changes, you might want to change the network
supplement Essentially just do a global search and replace of BOOTP
with BOOTP/DHCP.
This commit is contained in:
Joel Sherrill
@@ -682,6 +682,162 @@ static void printip(char *prefix,struct in_addr addr)
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ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 );
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}
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static int dhcpOptionOverload = 0;
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static char dhcp_gotgw = 0;
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static char dhcp_gotnetmask = 0;
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static char dhcp_gotserver = 0;
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static char dhcp_gotlogserver = 0;
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static struct sockaddr_in dhcp_netmask;
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static struct sockaddr_in dhcp_gw;
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static void
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processOptions (unsigned char *optbuf, int optbufSize)
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{
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int j = 0;
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int len;
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int code, ncode;
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char *p;
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ncode = optbuf[0];
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while (j < optbufSize) {
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code = optbuf[j] = ncode;
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if (code == 255)
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return;
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if (code == 0) {
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j++;
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continue;
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}
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len = optbuf[j+1];
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j += 2;
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if ((len + j) >= optbufSize) {
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printf ("Truncated field for code %d", code);
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return;
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}
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ncode = optbuf[j+len];
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optbuf[j+len] = '\0';
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p = &optbuf[j];
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j += len;
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/*
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* Process the option
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*/
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switch (code) {
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case 1:
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/* Subnet mask */
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if (len!=4)
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panic("bootpc: subnet mask len is %d",len);
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bcopy (p, &dhcp_netmask.sin_addr, 4);
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dhcp_gotnetmask = 1;
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break;
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case 2: /* Time offset, unused */
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break;
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case 3:
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/* Routers */
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if (len % 4)
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panic ("bootpc: Router Len is %d", len);
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if (len > 0) {
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bcopy(p, &dhcp_gw.sin_addr, 4);
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dhcp_gotgw = 1;
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}
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break;
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case 6:
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/* Domain Name servers */
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if (len % 4)
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panic ("bootpc: DNS Len is %d", len);
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{
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int dlen = 0;
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while ((dlen < len) &&
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(rtems_bsdnet_nameserver_count < sizeof rtems_bsdnet_config.name_server /
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sizeof rtems_bsdnet_config.name_server[0])) {
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bcopy (p+dlen,
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&rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count],
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4);
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printip("Domain Name Server",
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rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count]);
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rtems_bsdnet_nameserver_count++;
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dlen += 4;
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}
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}
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break;
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case 12:
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/* Host name */
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if (len>=MAXHOSTNAMELEN)
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panic ("bootpc: hostname >=%d bytes", MAXHOSTNAMELEN);
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if (sethostname (p, len) < 0)
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panic("Can't set host name");
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printf("Hostname is %s\n", p);
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break;
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case 7:
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/* Log servers */
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if (len % 4)
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panic ("bootpc: Log server Len is %d", len);
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if (len > 0) {
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bcopy(p, &rtems_bsdnet_log_host_address, 4);
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dhcp_gotlogserver = 1;
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}
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break;
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case 15:
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/* Domain name */
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if (p[0]) {
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rtems_bsdnet_domain_name = strdup (p);
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printf("Domain name is %s\n", rtems_bsdnet_domain_name);
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}
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break;
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case 16: /* Swap server IP address. unused */
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break;
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case 52:
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/* DHCP option override */
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if (len != 1)
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panic ("bootpc: DHCP option overload len is %d", len);
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dhcpOptionOverload = p[0];
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break;
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case 128: /* Site-specific option for DHCP servers that
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* a) don't supply tag 54
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* and
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* b) don't supply the server address in siaddr
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* For example, on Solaris 2.6 in.dhcpd, include in the dhcptab:
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* Bootsrv s Site,128,IP,1,1
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* and use that symbol in the macro that defines the client:
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* Bootsrv=<tftp-server-ip-address>
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*/
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case 54:
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/* DHCP server */
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if (len != 4)
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panic ("bootpc: DHCP server len is %d", len);
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bcopy(p, &rtems_bsdnet_bootp_server_address, 4);
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dhcp_gotserver = 1;
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break;
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case 66:
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/* DHCP server name option */
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if (p[0])
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rtems_bsdnet_bootp_server_name = strdup (p);
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break;
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case 67:
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/* DHCP bootfile option */
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if (p[0])
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rtems_bsdnet_bootp_boot_file_name = strdup (p);
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break;
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default:
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printf ("Ignoring BOOTP/DHCP option code %d\n", code);
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break;
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}
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}
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}
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#define EALEN 6
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void
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bootpc_init(void)
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{
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@@ -692,27 +848,9 @@ bootpc_init(void)
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struct ifreq ireq;
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struct ifnet *ifp;
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struct socket *so;
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int error;
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int code,ncode,len;
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int j;
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char *p;
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unsigned int ip;
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int error;
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struct sockaddr_in myaddr;
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struct sockaddr_in netmask;
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struct sockaddr_in gw;
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int gotgw=0;
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int gotnetmask=0;
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#if !defined(__rtems__)
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int gotrootpath=0;
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int gotswappath=0;
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#endif
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char lookup_path[24];
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#define EALEN 6
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#if !defined(__rtems__)
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unsigned char ea[EALEN];
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#endif
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struct ifaddr *ifa;
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struct sockaddr_dl *sdl = NULL;
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char *delim;
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@@ -724,12 +862,6 @@ bootpc_init(void)
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if (nfs_diskless_valid)
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return;
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/*
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* Bump time if 0.
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if (!time.tv_sec)
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time.tv_sec++;
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*/
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/*
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* Find a network interface.
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*/
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@@ -803,166 +935,77 @@ bootpc_init(void)
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if (error)
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panic("BOOTP call failed -- error %d", error);
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/*
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* Initialize network address structures
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*/
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bzero(&myaddr,sizeof(myaddr));
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bzero(&netmask,sizeof(netmask));
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bzero(&gw,sizeof(gw));
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bzero(&dhcp_netmask,sizeof(dhcp_netmask));
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bzero(&dhcp_gw,sizeof(dhcp_gw));
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myaddr.sin_len = sizeof(myaddr);
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myaddr.sin_family = AF_INET;
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dhcp_netmask.sin_len = sizeof(dhcp_netmask);
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dhcp_netmask.sin_family = AF_INET;
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dhcp_gw.sin_len = sizeof(dhcp_gw);
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dhcp_gw.sin_family= AF_INET;
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netmask.sin_len = sizeof(netmask);
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netmask.sin_family = AF_INET;
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gw.sin_len = sizeof(gw);
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gw.sin_family= AF_INET;
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rtems_bsdnet_bootp_server_address = reply.siaddr;
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rtems_bsdnet_log_host_address = reply.siaddr;
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/*
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* Set our address
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*/
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myaddr.sin_addr = reply.yiaddr;
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ip = ntohl(myaddr.sin_addr.s_addr);
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sprintf(lookup_path,"swap.%d.%d.%d.%d",
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ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 );
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printip("My ip address",myaddr.sin_addr);
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printip("Server ip address",reply.siaddr);
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gw.sin_addr = reply.giaddr;
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printip("Gateway ip address",reply.giaddr);
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if (reply.sname[0])
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printf("Server name is %s\n",reply.sname);
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if (reply.file[0])
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printf("boot file is %s\n",reply.file);
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rtems_bsdnet_bootp_boot_file_name = strdup (reply.file);
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/*
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* Process BOOTP/DHCP options
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*/
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if (reply.vend[0]==99 && reply.vend[1]==130 &&
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reply.vend[2]==83 && reply.vend[3]==99) {
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j=4;
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ncode = reply.vend[j];
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while (j<sizeof(reply.vend)) {
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code = reply.vend[j] = ncode;
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if (code==255)
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break;
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if (code==0) {
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j++;
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continue;
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}
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len = reply.vend[j+1];
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j+=2;
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if (len+j>=sizeof(reply.vend)) {
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printf("Truncated field");
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break;
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}
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ncode = reply.vend[j+len];
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reply.vend[j+len]='\0';
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p = &reply.vend[j];
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switch (code) {
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case 1:
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if (len!=4)
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panic("bootpc: subnet mask len is %d",len);
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bcopy(&reply.vend[j],&netmask.sin_addr,4);
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gotnetmask=1;
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printip("Subnet mask",netmask.sin_addr);
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break;
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case 6:
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/* Domain Name servers */
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if (len % 4)
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panic("bootpc: DNS Len is %d",len);
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{
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int dlen = 0;
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while ((dlen < len) &&
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(rtems_bsdnet_nameserver_count < sizeof rtems_bsdnet_config.name_server /
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sizeof rtems_bsdnet_config.name_server[0])) {
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bcopy(&reply.vend[j+dlen],
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&rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count],
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4);
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printip("Domain Name Server",
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rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count]);
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rtems_bsdnet_nameserver_count++;
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dlen += 4;
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}
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}
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break;
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case 16: /* Swap server IP address. unused */
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case 2:
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/* Time offset */
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break;
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case 3:
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/* Routers */
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if (len % 4)
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panic("bootpc: Router Len is %d",len);
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if (len > 0) {
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bcopy(&reply.vend[j],&gw.sin_addr,4);
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printip("Router",gw.sin_addr);
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gotgw=1;
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}
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break;
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case 7:
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/* Log servers */
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if (len % 4)
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panic("bootpc: Log server len is %d",len);
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if (len > 0) {
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bcopy(&reply.vend[j],&rtems_bsdnet_log_host_address,4);
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printip("Log server",rtems_bsdnet_log_host_address);
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}
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break;
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case 12:
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if (len>=MAXHOSTNAMELEN)
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panic("bootpc: hostname >=%d bytes",MAXHOSTNAMELEN);
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if (sethostname (&reply.vend[j], len) < 0)
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panic("Can't set host name");
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printf("Hostname is %.*s\n",len,&reply.vend[j]);
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break;
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case 15:
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/* Domain name */
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rtems_bsdnet_domain_name = strdup (&reply.vend[j]);
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if (rtems_bsdnet_domain_name)
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printf("Domain name is %s\n", rtems_bsdnet_domain_name);
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break;
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default:
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printf("Ignoring field type %d\n",code);
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}
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j+=len;
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}
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processOptions (&reply.vend[4], sizeof(reply.vend) - 4);
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}
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if (dhcpOptionOverload & 1) {
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processOptions (reply.file, sizeof reply.file);
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}
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else {
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if (reply.file[0])
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rtems_bsdnet_bootp_boot_file_name = strdup (reply.file);
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}
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if (dhcpOptionOverload & 2) {
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processOptions (reply.sname, sizeof reply.sname);
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}
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else {
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if (reply.sname[0])
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rtems_bsdnet_bootp_server_name = strdup (reply.sname);
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}
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if (rtems_bsdnet_bootp_server_name)
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printf ("Server name is %s\n", rtems_bsdnet_bootp_server_name);
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if (rtems_bsdnet_bootp_boot_file_name)
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printf ("Boot file is %s\n", rtems_bsdnet_bootp_boot_file_name);
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if (!gotnetmask) {
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/*
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* Use defaults if values were not supplied by BOOTP/DHCP options
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*/
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if (!dhcp_gotnetmask) {
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if (IN_CLASSA(ntohl(myaddr.sin_addr.s_addr)))
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netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET);
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dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET);
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else if (IN_CLASSB(ntohl(myaddr.sin_addr.s_addr)))
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netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET);
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dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET);
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else
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netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET);
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}
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if (!gotgw) {
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/* Use proxyarp */
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gw.sin_addr.s_addr = myaddr.sin_addr.s_addr;
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dhcp_netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET);
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}
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printip ("Subnet mask", dhcp_netmask.sin_addr);
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if (!dhcp_gotserver)
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rtems_bsdnet_bootp_server_address = reply.siaddr;
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printip ("Server ip address" ,rtems_bsdnet_bootp_server_address);
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if (!dhcp_gotgw)
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dhcp_gw.sin_addr = reply.giaddr;
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printip ("Gateway ip address", dhcp_gw.sin_addr);
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if (!dhcp_gotlogserver)
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rtems_bsdnet_log_host_address = rtems_bsdnet_bootp_server_address;
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printip ("Log server ip address", rtems_bsdnet_log_host_address);
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#if 0
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bootpboot_p_iflist();
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bootpboot_p_rtlist();
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#endif
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/*
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* Configure the interface with the new settings
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*/
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error = bootpc_adjust_interface(&ireq,so,
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&myaddr,&netmask,&gw,procp);
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&myaddr,&dhcp_netmask,&dhcp_gw,procp);
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soclose(so);
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#if 0
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bootpboot_p_iflist();
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bootpboot_p_rtlist();
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#endif
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#if 0
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myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
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#endif
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#if 0
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bootpboot_p_iflist();
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bootpboot_p_rtlist();
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#endif
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return;
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}
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Reference in New Issue
Block a user