upstream/monitoring-plugins
1
0
Fork 0
mirror of https://github.com/monitoring-plugins/monitoring-plugins.git synced 2026-02-20 00:10:09 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

check_dhcp now adds mandatory end option (Thanks to Enrico Scholz - #1675306)

Browse source 
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1712 f882894a-f735-0410-b71e-b25c423dba1c
This commit is contained in:
Matthias Eble 2007-05-13 12:28:30 +00:00
parent 1ef19943e1
commit 09f87e314b
2 changed files with 12 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
THANKS.in
View file

@ -219,3 +219,4 @@ Denis Knauf
Matthias Flacke
Emil Michles
Ask Bjoern Hansen
Enrico Scholz

17
plugins-root/check_dhcp.c
View file

@ -185,6 +185,7 @@ typedef struct requested_server_struct{
#define DHCP_OPTION_SERVER_IDENTIFIER 54
#define DHCP_OPTION_RENEWAL_TIME 58
#define DHCP_OPTION_REBINDING_TIME 59
#define DHCP_OPTION_END 255
#define DHCP_INFINITE_TIME 0xFFFFFFFF
@ -401,6 +402,7 @@ int get_hardware_address(int sock,char *interface_name){
int send_dhcp_discover(int sock){
dhcp_packet discover_packet;
struct sockaddr_in sockaddr_broadcast;
unsigned short opts;
/* clear the packet data structure */
@ -442,17 +444,20 @@ int send_dhcp_discover(int sock){
discover_packet.options[2]='\x53';
discover_packet.options[3]='\x63';
opts = 4;
/* DHCP message type is embedded in options field */
discover_packet.options[4]=DHCP_OPTION_MESSAGE_TYPE; /* DHCP message type option identifier */
discover_packet.options[5]='\x01'; /* DHCP message option length in bytes */
discover_packet.options[6]=DHCPDISCOVER;
discover_packet.options[opts++]=DHCP_OPTION_MESSAGE_TYPE; /* DHCP message type option identifier */
discover_packet.options[opts++]='\x01'; /* DHCP message option length in bytes */
discover_packet.options[opts++]=DHCPDISCOVER;
/* the IP address we're requesting */
if(request_specific_address==TRUE){
discover_packet.options[7]=DHCP_OPTION_REQUESTED_ADDRESS;
discover_packet.options[8]='\x04';
memcpy(&discover_packet.options[9],&requested_address,sizeof(requested_address));
discover_packet.options[opts++]=DHCP_OPTION_REQUESTED_ADDRESS;
discover_packet.options[opts++]='\x04';
memcpy(&discover_packet.options[opts],&requested_address,sizeof(requested_address));
opts += sizeof(requested_address);
}
discover_packet.options[opts++]=DHCP_OPTION_END;
/* send the DHCPDISCOVER packet to broadcast address */
sockaddr_broadcast.sin_family=AF_INET;