mirror of
https://github.com/pi-hole/dnsmasq.git
synced 2025-12-19 10:18:25 +00:00
import of dnsmasq-2.58.tar.gz
This commit is contained in:
304
src/rfc2131.c
304
src/rfc2131.c
@@ -41,8 +41,8 @@ static void log_packet(char *type, void *addr, unsigned char *ext_mac,
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int mac_len, char *interface, char *string, u32 xid);
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static unsigned char *option_find(struct dhcp_packet *mess, size_t size, int opt_type, int minsize);
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static unsigned char *option_find1(unsigned char *p, unsigned char *end, int opt, int minsize);
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static size_t dhcp_packet_size(struct dhcp_packet *mess, struct dhcp_netid *netid,
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unsigned char *agent_id, unsigned char *real_end);
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static void log_tags(struct dhcp_netid *netid, struct dhcp_packet *mess);
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static size_t dhcp_packet_size(struct dhcp_packet *mess, unsigned char *agent_id, unsigned char *real_end);
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static void clear_packet(struct dhcp_packet *mess, unsigned char *end);
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static void do_options(struct dhcp_context *context,
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struct dhcp_packet *mess,
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@@ -51,11 +51,12 @@ static void do_options(struct dhcp_context *context,
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char *hostname,
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char *domain, char *config_domain,
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struct dhcp_netid *netid,
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struct in_addr subnet_addr,
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struct in_addr subnet_addr,
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unsigned char fqdn_flags,
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int null_term, int pxearch,
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unsigned char *uuid,
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int vendor_class_len);
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int vendor_class_len,
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time_t now);
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static void match_vendor_opts(unsigned char *opt, struct dhcp_opt *dopt);
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@@ -67,7 +68,7 @@ struct dhcp_boot *find_boot(struct dhcp_netid *netid);
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size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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size_t sz, time_t now, int unicast_dest, int *is_inform, int pxe)
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size_t sz, time_t now, int unicast_dest, int *is_inform, int pxe, struct in_addr fallback)
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{
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unsigned char *opt, *clid = NULL;
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struct dhcp_lease *ltmp, *lease = NULL;
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@@ -85,7 +86,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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unsigned int time;
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struct dhcp_config *config;
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struct dhcp_netid *netid, *tagif_netid;
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struct in_addr subnet_addr, fallback, override;
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struct in_addr subnet_addr, override;
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unsigned short fuzz = 0;
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unsigned int mess_type = 0;
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unsigned char fqdn_flags = 0;
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@@ -297,17 +298,43 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (!context_new)
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for (context_tmp = daemon->dhcp; context_tmp; context_tmp = context_tmp->next)
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if (context_tmp->netmask.s_addr &&
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is_same_net(addr, context_tmp->start, context_tmp->netmask) &&
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is_same_net(addr, context_tmp->end, context_tmp->netmask))
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{
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context_tmp->current = context_new;
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context_new = context_tmp;
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}
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{
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struct in_addr netmask = context_tmp->netmask;
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/* guess the netmask for relayed networks */
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if (!(context_tmp->flags & CONTEXT_NETMASK) && context_tmp->netmask.s_addr == 0)
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{
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if (IN_CLASSA(ntohl(context_tmp->start.s_addr)) && IN_CLASSA(ntohl(context_tmp->end.s_addr)))
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netmask.s_addr = htonl(0xff000000);
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else if (IN_CLASSB(ntohl(context_tmp->start.s_addr)) && IN_CLASSB(ntohl(context_tmp->end.s_addr)))
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netmask.s_addr = htonl(0xffff0000);
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else if (IN_CLASSC(ntohl(context_tmp->start.s_addr)) && IN_CLASSC(ntohl(context_tmp->end.s_addr)))
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netmask.s_addr = htonl(0xffffff00);
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}
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/* This section fills in context mainly when a client which is on a remote (relayed)
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network renews a lease without using the relay, after dnsmasq has restarted. */
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if (netmask.s_addr != 0 &&
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is_same_net(addr, context_tmp->start, netmask) &&
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is_same_net(addr, context_tmp->end, netmask))
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{
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context_tmp->netmask = netmask;
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if (context_tmp->local.s_addr == 0)
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context_tmp->local = fallback;
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if (context_tmp->router.s_addr == 0)
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context_tmp->router = mess->giaddr;
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/* fill in missing broadcast addresses for relayed ranges */
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if (!(context_tmp->flags & CONTEXT_BRDCAST) && context_tmp->broadcast.s_addr == 0 )
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context_tmp->broadcast.s_addr = context_tmp->start.s_addr | ~context_tmp->netmask.s_addr;
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context_tmp->current = context_new;
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context_new = context_tmp;
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}
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}
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if (context_new || force)
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context = context_new;
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context = context_new;
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}
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if (!context)
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@@ -318,9 +345,6 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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return 0;
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}
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/* keep _a_ local address available. */
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fallback = context->local;
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if (option_bool(OPT_LOG_OPTS))
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{
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struct dhcp_context *context_tmp;
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@@ -441,9 +465,10 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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else if (context->netid.net)
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{
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context->netid.next = netid;
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netid = &context->netid;
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tagif_netid = run_tag_if(netid);
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tagif_netid = run_tag_if(&context->netid);
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}
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log_tags(tagif_netid, mess);
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if (!message && !nailed)
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{
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@@ -474,13 +499,13 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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clear_packet(mess, end);
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do_options(context, mess, end, NULL, hostname, get_domain(mess->yiaddr),
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domain, tagif_netid, subnet_addr, 0, 0, 0, NULL, 0);
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domain, netid, subnet_addr, 0, 0, 0, NULL, 0, now);
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}
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}
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log_packet("BOOTP", logaddr, mess->chaddr, mess->hlen, iface_name, message, mess->xid);
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return message ? 0 : dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
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return message ? 0 : dhcp_packet_size(mess, agent_id, real_end);
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}
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if ((opt = option_find(mess, sz, OPTION_CLIENT_FQDN, 4)))
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@@ -795,7 +820,8 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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do_encap_opts(&opt71, OPTION_VENDOR_CLASS_OPT, DHOPT_VENDOR_MATCH, mess, end, 0);
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log_packet("PXE", &mess->yiaddr, emac, emac_len, iface_name, (char *)mess->file, mess->xid);
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return dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
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log_tags(tagif_netid, mess);
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return dhcp_packet_size(mess, agent_id, real_end);
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}
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if ((opt = option_find(mess, sz, OPTION_ARCH, 2)))
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@@ -829,8 +855,10 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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and set discovery_control = 8 */
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if (boot)
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{
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if (boot->next_server.s_addr)
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if (boot->next_server.s_addr)
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mess->siaddr = boot->next_server;
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else if (boot->tftp_sname)
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mess->siaddr = a_record_from_hosts(boot->tftp_sname, now);
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if (boot->file)
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strncpy((char *)mess->file, boot->file, sizeof(mess->file)-1);
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@@ -844,7 +872,8 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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do_encap_opts(pxe_opts(pxearch, tagif_netid, context->local), OPTION_VENDOR_CLASS_OPT, DHOPT_VENDOR_MATCH, mess, end, 0);
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log_packet("PXE", NULL, emac, emac_len, iface_name, ignore ? "proxy-ignored" : "proxy", mess->xid);
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return ignore ? 0 : dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
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log_tags(tagif_netid, mess);
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return ignore ? 0 : dhcp_packet_size(mess, agent_id, real_end);
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}
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}
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}
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@@ -975,15 +1004,16 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (message || !(context = narrow_context(context, mess->yiaddr, tagif_netid)))
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return 0;
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log_packet("DHCPOFFER" , &mess->yiaddr, emac, emac_len, iface_name, NULL, mess->xid);
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if (context->netid.net)
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{
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context->netid.next = netid;
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netid = &context->netid;
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tagif_netid = run_tag_if(netid);
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tagif_netid = run_tag_if(&context->netid);
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}
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log_tags(tagif_netid, mess);
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log_packet("DHCPOFFER" , &mess->yiaddr, emac, emac_len, iface_name, NULL, mess->xid);
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time = calc_time(context, config, option_find(mess, sz, OPTION_LEASE_TIME, 4));
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clear_packet(mess, end);
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option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPOFFER);
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@@ -996,9 +1026,9 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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option_put(mess, end, OPTION_T2, 4, (time*7)/8);
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}
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do_options(context, mess, end, req_options, offer_hostname, get_domain(mess->yiaddr),
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domain, tagif_netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len);
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domain, netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len, now);
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return dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
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return dhcp_packet_size(mess, agent_id, real_end);
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case DHCPREQUEST:
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if (ignore || have_config(config, CONFIG_DISABLE))
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@@ -1029,12 +1059,30 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (!context)
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{
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/* In auth mode, a REQUEST sent to the wrong server
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should be faulted, so that the client establishes
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communication with us, otherwise, silently ignore. */
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if (!option_bool(OPT_AUTHORITATIVE))
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return 0;
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message = _("wrong server-ID");
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/* Handle very strange configs where clients have more than one route to the server.
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If a clients idea of its server-id matches any of our DHCP interfaces, we let it pass.
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Have to set override to make sure we echo back the correct server-id */
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struct irec *intr;
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enumerate_interfaces();
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for (intr = daemon->interfaces; intr; intr = intr->next)
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if (intr->addr.sa.sa_family == AF_INET &&
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intr->addr.in.sin_addr.s_addr == option_addr(opt).s_addr &&
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intr->tftp_ok)
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break;
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if (intr)
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override = intr->addr.in.sin_addr;
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else
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{
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/* In auth mode, a REQUEST sent to the wrong server
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should be faulted, so that the client establishes
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communication with us, otherwise, silently ignore. */
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if (!option_bool(OPT_AUTHORITATIVE))
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return 0;
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message = _("wrong server-ID");
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}
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}
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}
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@@ -1173,9 +1221,10 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (context->netid.net)
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{
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context->netid.next = netid;
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netid = &context->netid;
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tagif_netid = run_tag_if(netid);
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tagif_netid = run_tag_if( &context->netid);
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}
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log_tags(tagif_netid, mess);
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#ifdef HAVE_SCRIPT
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if (do_classes && daemon->lease_change_command)
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@@ -1278,10 +1327,10 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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option_put(mess, end, OPTION_T2, 4, ((time/8)*7) - fuzz);
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}
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do_options(context, mess, end, req_options, hostname, get_domain(mess->yiaddr),
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domain, tagif_netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len);
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domain, netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len, now);
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}
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return dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
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return dhcp_packet_size(mess, agent_id, real_end);
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case DHCPINFORM:
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if (ignore || have_config(config, CONFIG_DISABLE))
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@@ -1304,15 +1353,16 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
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if (!hostname && (hostname = host_from_dns(mess->ciaddr)))
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domain = get_domain(mess->ciaddr);
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log_packet("DHCPACK", &mess->ciaddr, emac, emac_len, iface_name, hostname, mess->xid);
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if (context && context->netid.net)
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{
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context->netid.next = netid;
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netid = &context->netid;
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tagif_netid = run_tag_if(netid);
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tagif_netid = run_tag_if( &context->netid);
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}
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|
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log_tags(tagif_netid, mess);
|
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|
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log_packet("DHCPACK", &mess->ciaddr, emac, emac_len, iface_name, hostname, mess->xid);
|
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|
||||
if (lease)
|
||||
{
|
||||
@@ -1337,10 +1387,10 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
|
||||
}
|
||||
|
||||
do_options(context, mess, end, req_options, hostname, get_domain(mess->ciaddr),
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domain, tagif_netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len);
|
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domain, netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len, now);
|
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|
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*is_inform = 1; /* handle reply differently */
|
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return dhcp_packet_size(mess, tagif_netid, agent_id, real_end);
|
||||
return dhcp_packet_size(mess, agent_id, real_end);
|
||||
}
|
||||
|
||||
return 0;
|
||||
@@ -1432,7 +1482,7 @@ static struct in_addr server_id(struct dhcp_context *context, struct in_addr ove
|
||||
{
|
||||
if (override.s_addr != 0)
|
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return override;
|
||||
else if (context)
|
||||
else if (context && context->local.s_addr != 0)
|
||||
return context->local;
|
||||
else
|
||||
return fallback;
|
||||
@@ -1672,30 +1722,16 @@ static unsigned char *find_overload(struct dhcp_packet *mess)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static size_t dhcp_packet_size(struct dhcp_packet *mess, struct dhcp_netid *netid,
|
||||
unsigned char *agent_id, unsigned char *real_end)
|
||||
static void log_tags(struct dhcp_netid *netid, struct dhcp_packet *mess)
|
||||
{
|
||||
unsigned char *p = dhcp_skip_opts(&mess->options[0] + sizeof(u32));
|
||||
unsigned char *overload;
|
||||
size_t ret;
|
||||
struct dhcp_netid_list *id_list;
|
||||
struct dhcp_netid *n;
|
||||
|
||||
/* move agent_id back down to the end of the packet */
|
||||
if (agent_id)
|
||||
{
|
||||
memmove(p, agent_id, real_end - agent_id);
|
||||
p += real_end - agent_id;
|
||||
memset(p, 0, real_end - p); /* in case of overlap */
|
||||
}
|
||||
|
||||
/* We do logging too */
|
||||
if (netid && option_bool(OPT_LOG_OPTS))
|
||||
{
|
||||
char *s = daemon->namebuff;
|
||||
for (*s = 0; netid; netid = netid->next)
|
||||
{
|
||||
/* kill dupes. */
|
||||
struct dhcp_netid *n;
|
||||
|
||||
for (n = netid->next; n; n = n->next)
|
||||
if (strcmp(netid->net, n->net) == 0)
|
||||
break;
|
||||
@@ -1709,7 +1745,22 @@ static size_t dhcp_packet_size(struct dhcp_packet *mess, struct dhcp_netid *neti
|
||||
}
|
||||
my_syslog(MS_DHCP | LOG_INFO, _("%u tags: %s"), ntohl(mess->xid), s);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static size_t dhcp_packet_size(struct dhcp_packet *mess, unsigned char *agent_id, unsigned char *real_end)
|
||||
{
|
||||
unsigned char *p = dhcp_skip_opts(&mess->options[0] + sizeof(u32));
|
||||
unsigned char *overload;
|
||||
size_t ret;
|
||||
|
||||
/* move agent_id back down to the end of the packet */
|
||||
if (agent_id)
|
||||
{
|
||||
memmove(p, agent_id, real_end - agent_id);
|
||||
p += real_end - agent_id;
|
||||
memset(p, 0, real_end - p); /* in case of overlap */
|
||||
}
|
||||
|
||||
/* add END options to the regions. */
|
||||
overload = find_overload(mess);
|
||||
|
||||
@@ -1734,12 +1785,6 @@ static size_t dhcp_packet_size(struct dhcp_packet *mess, struct dhcp_netid *neti
|
||||
|
||||
*p++ = OPTION_END;
|
||||
|
||||
for (id_list = daemon->force_broadcast; id_list; id_list = id_list->next)
|
||||
if ((!id_list->list) || match_netid(id_list->list, netid, 0))
|
||||
break;
|
||||
if (id_list)
|
||||
mess->flags |= htons(0x8000); /* force broadcast */
|
||||
|
||||
if (option_bool(OPT_LOG_OPTS))
|
||||
{
|
||||
if (mess->siaddr.s_addr != 0)
|
||||
@@ -1889,20 +1934,14 @@ static int in_list(unsigned char *list, int opt)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct dhcp_opt *option_find2(struct dhcp_netid *netid, struct dhcp_opt *opts, int opt)
|
||||
static struct dhcp_opt *option_find2(int opt)
|
||||
{
|
||||
struct dhcp_opt *tmp;
|
||||
for (tmp = opts; tmp; tmp = tmp->next)
|
||||
if (tmp->opt == opt && !(tmp->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925)))
|
||||
if (match_netid(tmp->netid, netid, 0))
|
||||
return tmp;
|
||||
|
||||
/* No match, look for one without a netid */
|
||||
for (tmp = opts; tmp; tmp = tmp->next)
|
||||
if (tmp->opt == opt && !(tmp->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925)))
|
||||
if (match_netid(tmp->netid, netid, 1))
|
||||
return tmp;
|
||||
|
||||
struct dhcp_opt *opts;
|
||||
|
||||
for (opts = daemon->dhcp_opts; opts; opts = opts->next)
|
||||
if (opts->opt == opt && (opts->flags & DHOPT_TAGOK))
|
||||
return opts;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@@ -2157,7 +2196,8 @@ static void do_options(struct dhcp_context *context,
|
||||
unsigned char fqdn_flags,
|
||||
int null_term, int pxe_arch,
|
||||
unsigned char *uuid,
|
||||
int vendor_class_len)
|
||||
int vendor_class_len,
|
||||
time_t now)
|
||||
{
|
||||
struct dhcp_opt *opt, *config_opts = daemon->dhcp_opts;
|
||||
struct dhcp_boot *boot;
|
||||
@@ -2166,7 +2206,53 @@ static void do_options(struct dhcp_context *context,
|
||||
unsigned char f0 = 0, s0 = 0;
|
||||
int done_file = 0, done_server = 0;
|
||||
int done_vendor_class = 0;
|
||||
struct dhcp_netid *tagif;
|
||||
struct dhcp_netid_list *id_list;
|
||||
|
||||
/* flag options which are valid with the current tag set (sans context tags) */
|
||||
tagif = run_tag_if(netid);
|
||||
for (opt = config_opts; opt; opt = opt->next)
|
||||
{
|
||||
opt->flags &= ~DHOPT_TAGOK;
|
||||
if (!(opt->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925)) &&
|
||||
match_netid(opt->netid, tagif, 0))
|
||||
opt->flags |= DHOPT_TAGOK;
|
||||
}
|
||||
|
||||
/* now flag options which are valid, including the context tags,
|
||||
otherwise valid options are inhibited if we found a higher priotity one above */
|
||||
if (context && context->netid.net)
|
||||
{
|
||||
context->netid.next = netid;
|
||||
tagif = run_tag_if(&context->netid);
|
||||
|
||||
for (opt = config_opts; opt; opt = opt->next)
|
||||
if (!(opt->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925 | DHOPT_TAGOK)) &&
|
||||
match_netid(opt->netid, tagif, 0))
|
||||
{
|
||||
struct dhcp_opt *tmp;
|
||||
for (tmp = config_opts; tmp; tmp = tmp->next)
|
||||
if (tmp->opt == opt->opt && opt->netid && (tmp->flags & DHOPT_TAGOK))
|
||||
break;
|
||||
if (!tmp)
|
||||
opt->flags |= DHOPT_TAGOK;
|
||||
}
|
||||
}
|
||||
|
||||
/* now flag untagged options which are not overridden by tagged ones */
|
||||
for (opt = config_opts; opt; opt = opt->next)
|
||||
if (!(opt->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925 | DHOPT_TAGOK)) && !opt->netid)
|
||||
{
|
||||
struct dhcp_opt *tmp;
|
||||
for (tmp = config_opts; tmp; tmp = tmp->next)
|
||||
if (tmp->opt == opt->opt && (tmp->flags & DHOPT_TAGOK))
|
||||
break;
|
||||
if (!tmp)
|
||||
opt->flags |= DHOPT_TAGOK;
|
||||
else if (!tmp->netid)
|
||||
my_syslog(MS_DHCP | LOG_WARNING, _("Ignoring duplicate dhcp-option %d"), tmp->opt);
|
||||
}
|
||||
|
||||
if (config_domain && (!domain || !hostname_isequal(domain, config_domain)))
|
||||
my_syslog(MS_DHCP | LOG_WARNING, _("Ignoring domain %s for DHCP host name %s"), config_domain, hostname);
|
||||
|
||||
@@ -2191,6 +2277,12 @@ static void do_options(struct dhcp_context *context,
|
||||
}
|
||||
}
|
||||
|
||||
for (id_list = daemon->force_broadcast; id_list; id_list = id_list->next)
|
||||
if ((!id_list->list) || match_netid(id_list->list, netid, 0))
|
||||
break;
|
||||
if (id_list)
|
||||
mess->flags |= htons(0x8000); /* force broadcast */
|
||||
|
||||
if (context)
|
||||
mess->siaddr = context->local;
|
||||
|
||||
@@ -2200,7 +2292,7 @@ static void do_options(struct dhcp_context *context,
|
||||
provide an manual option to disable it.
|
||||
Some PXE ROMs have bugs (surprise!) and need zero-terminated
|
||||
names, so we always send those. */
|
||||
if ((boot = find_boot(netid)))
|
||||
if ((boot = find_boot(tagif)))
|
||||
{
|
||||
if (boot->sname)
|
||||
{
|
||||
@@ -2222,8 +2314,10 @@ static void do_options(struct dhcp_context *context,
|
||||
strncpy((char *)mess->file, boot->file, sizeof(mess->file)-1);
|
||||
}
|
||||
|
||||
if (boot->next_server.s_addr)
|
||||
if (boot->next_server.s_addr)
|
||||
mess->siaddr = boot->next_server;
|
||||
else if (boot->tftp_sname)
|
||||
mess->siaddr = a_record_from_hosts(boot->tftp_sname, now);
|
||||
}
|
||||
else
|
||||
/* Use the values of the relevant options if no dhcp-boot given and
|
||||
@@ -2232,20 +2326,20 @@ static void do_options(struct dhcp_context *context,
|
||||
dhcp-optsfile. */
|
||||
{
|
||||
if ((!req_options || !in_list(req_options, OPTION_FILENAME)) &&
|
||||
(opt = option_find2(netid, config_opts, OPTION_FILENAME)) && !(opt->flags & DHOPT_FORCE))
|
||||
(opt = option_find2(OPTION_FILENAME)) && !(opt->flags & DHOPT_FORCE))
|
||||
{
|
||||
strncpy((char *)mess->file, (char *)opt->val, sizeof(mess->file)-1);
|
||||
done_file = 1;
|
||||
}
|
||||
|
||||
if ((!req_options || !in_list(req_options, OPTION_SNAME)) &&
|
||||
(opt = option_find2(netid, config_opts, OPTION_SNAME)) && !(opt->flags & DHOPT_FORCE))
|
||||
(opt = option_find2(OPTION_SNAME)) && !(opt->flags & DHOPT_FORCE))
|
||||
{
|
||||
strncpy((char *)mess->sname, (char *)opt->val, sizeof(mess->sname)-1);
|
||||
done_server = 1;
|
||||
}
|
||||
|
||||
if ((opt = option_find2(netid, config_opts, OPTION_END)))
|
||||
if ((opt = option_find2(OPTION_END)))
|
||||
mess->siaddr.s_addr = ((struct in_addr *)opt->val)->s_addr;
|
||||
}
|
||||
|
||||
@@ -2273,36 +2367,36 @@ static void do_options(struct dhcp_context *context,
|
||||
/* replies to DHCPINFORM may not have a valid context */
|
||||
if (context)
|
||||
{
|
||||
if (!option_find2(netid, config_opts, OPTION_NETMASK))
|
||||
if (!option_find2(OPTION_NETMASK))
|
||||
option_put(mess, end, OPTION_NETMASK, INADDRSZ, ntohl(context->netmask.s_addr));
|
||||
|
||||
/* May not have a "guessed" broadcast address if we got no packets via a relay
|
||||
from this net yet (ie just unicast renewals after a restart */
|
||||
if (context->broadcast.s_addr &&
|
||||
!option_find2(netid, config_opts, OPTION_BROADCAST))
|
||||
!option_find2(OPTION_BROADCAST))
|
||||
option_put(mess, end, OPTION_BROADCAST, INADDRSZ, ntohl(context->broadcast.s_addr));
|
||||
|
||||
/* Same comments as broadcast apply, and also may not be able to get a sensible
|
||||
default when using subnet select. User must configure by steam in that case. */
|
||||
if (context->router.s_addr &&
|
||||
in_list(req_options, OPTION_ROUTER) &&
|
||||
!option_find2(netid, config_opts, OPTION_ROUTER))
|
||||
!option_find2(OPTION_ROUTER))
|
||||
option_put(mess, end, OPTION_ROUTER, INADDRSZ, ntohl(context->router.s_addr));
|
||||
|
||||
if (in_list(req_options, OPTION_DNSSERVER) &&
|
||||
!option_find2(netid, config_opts, OPTION_DNSSERVER))
|
||||
!option_find2(OPTION_DNSSERVER))
|
||||
option_put(mess, end, OPTION_DNSSERVER, INADDRSZ, ntohl(context->local.s_addr));
|
||||
}
|
||||
|
||||
if (domain && in_list(req_options, OPTION_DOMAINNAME) &&
|
||||
!option_find2(netid, config_opts, OPTION_DOMAINNAME))
|
||||
!option_find2(OPTION_DOMAINNAME))
|
||||
option_put_string(mess, end, OPTION_DOMAINNAME, domain, null_term);
|
||||
|
||||
/* Note that we ignore attempts to set the fqdn using --dhc-option=81,<name> */
|
||||
if (hostname)
|
||||
{
|
||||
if (in_list(req_options, OPTION_HOSTNAME) &&
|
||||
!option_find2(netid, config_opts, OPTION_HOSTNAME))
|
||||
!option_find2(OPTION_HOSTNAME))
|
||||
option_put_string(mess, end, OPTION_HOSTNAME, hostname, null_term);
|
||||
|
||||
if (fqdn_flags != 0)
|
||||
@@ -2351,6 +2445,10 @@ static void do_options(struct dhcp_context *context,
|
||||
{
|
||||
int optno = opt->opt;
|
||||
|
||||
/* netids match and not encapsulated? */
|
||||
if (!(opt->flags & DHOPT_TAGOK))
|
||||
continue;
|
||||
|
||||
/* was it asked for, or are we sending it anyway? */
|
||||
if (!(opt->flags & DHOPT_FORCE) && !in_list(req_options, optno))
|
||||
continue;
|
||||
@@ -2369,10 +2467,6 @@ static void do_options(struct dhcp_context *context,
|
||||
if (optno == OPTION_FILENAME && done_file)
|
||||
continue;
|
||||
|
||||
/* netids match and not encapsulated? */
|
||||
if (opt != option_find2(netid, config_opts, optno))
|
||||
continue;
|
||||
|
||||
/* For the options we have default values on
|
||||
dhc-option=<optionno> means "don't include this option"
|
||||
not "include a zero-length option" */
|
||||
@@ -2439,7 +2533,7 @@ static void do_options(struct dhcp_context *context,
|
||||
continue;
|
||||
|
||||
o->flags |= DHOPT_ENCAP_DONE;
|
||||
if (match_netid(o->netid, netid, 1) &&
|
||||
if (match_netid(o->netid, tagif, 1) &&
|
||||
((o->flags & DHOPT_FORCE) || in_list(req_options, outer)))
|
||||
{
|
||||
o->flags |= DHOPT_ENCAP_MATCH;
|
||||
@@ -2473,12 +2567,12 @@ static void do_options(struct dhcp_context *context,
|
||||
}
|
||||
}
|
||||
|
||||
force_encap = prune_vendor_opts(netid);
|
||||
force_encap = prune_vendor_opts(tagif);
|
||||
|
||||
if (context && pxe_arch != -1)
|
||||
{
|
||||
pxe_misc(mess, end, uuid);
|
||||
config_opts = pxe_opts(pxe_arch, netid, context->local);
|
||||
config_opts = pxe_opts(pxe_arch, tagif, context->local);
|
||||
}
|
||||
|
||||
if ((force_encap || in_list(req_options, OPTION_VENDOR_CLASS_OPT)) &&
|
||||
|
||||
Reference in New Issue
Block a user