/**************************************************************************
*
* Copyright (c) 2013 Alcatel-Lucent
*
* Alcatel Lucent licenses this file to You under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. A copy of the License is contained the
* file LICENSE at the top level of this repository.
* You may also obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**************************************************************************
*
* syslog.c:
*
* This code supports the monitor's SYSLOC client.
*
* Original author: Ed Sutter (ed.sutter@alcatel-lucent.com)
*
*/
#include "config.h"
#if INCLUDE_SYSLOG
#include "endian.h"
#include "genlib.h"
#include "ether.h"
#include "stddefs.h"
#include "cli.h"
#define SYSLOG_PORT 514
struct nameval {
char *name;
int val;
};
/* Priority codes:
*/
#define LOG_EMERG 0 /* system is unusable */
#define LOG_ALERT 1 /* action must be taken immediately */
#define LOG_CRIT 2 /* critical conditions */
#define LOG_ERR 3 /* error conditions */
#define LOG_WARNING 4 /* warning conditions */
#define LOG_NOTICE 5 /* normal but significant condition */
#define LOG_INFO 6 /* informational */
#define LOG_DEBUG 7 /* debug-level messages */
/* Facility codes:
*/
#define LOG_KERN (0<<3) /* kernel messages */
#define LOG_USER (1<<3) /* random user-level messages */
#define LOG_MAIL (2<<3) /* mail system */
#define LOG_DAEMON (3<<3) /* system daemons */
#define LOG_AUTH (4<<3) /* security/authorization messages */
#define LOG_SYSLOG (5<<3) /* messages generated internally by syslogd */
#define LOG_LPR (6<<3) /* line printer subsystem */
#define LOG_NEWS (7<<3) /* network news subsystem */
#define LOG_UUCP (8<<3) /* UUCP subsystem */
#define LOG_CRON (9<<3) /* clock daemon */
#define LOG_AUTHPRIV (10<<3) /* security/authorization messages (private) */
#define LOG_FTP (11<<3) /* ftp daemon */
#define LOG_LOCAL0 (16<<3) /* reserved for local use */
#define LOG_LOCAL1 (17<<3) /* reserved for local use */
#define LOG_LOCAL2 (18<<3) /* reserved for local use */
#define LOG_LOCAL3 (19<<3) /* reserved for local use */
#define LOG_LOCAL4 (20<<3) /* reserved for local use */
#define LOG_LOCAL5 (21<<3) /* reserved for local use */
#define LOG_LOCAL6 (22<<3) /* reserved for local use */
#define LOG_LOCAL7 (23<<3) /* reserved for local use */
#define FACILITY_MASK 0x03f8
#define PRIORITY_MASK 0x0007
struct nameval prioritynames[] = {
{ "emerg", LOG_EMERG },
{ "alert", LOG_ALERT },
{ "critical", LOG_CRIT },
{ "error", LOG_ERR },
{ "warning", LOG_WARNING },
{ "notice", LOG_NOTICE },
{ "info", LOG_INFO },
{ "debug", LOG_DEBUG },
{ 0, 0 }
};
struct nameval facilitynames[] = {
{ "kernel", LOG_KERN },
{ "user", LOG_USER },
{ "mail", LOG_MAIL },
{ "daemon", LOG_DAEMON },
{ "authorize", LOG_AUTH },
{ "syslog", LOG_SYSLOG },
{ "lpr", LOG_LPR },
{ "news", LOG_NEWS },
{ "uucp", LOG_UUCP },
{ "cron", LOG_CRON },
{ "authpriv", LOG_AUTHPRIV },
{ "ftp", LOG_FTP },
{ "local0", LOG_LOCAL0 },
{ "local1", LOG_LOCAL1 },
{ "local2", LOG_LOCAL2 },
{ "local3", LOG_LOCAL3 },
{ "local4", LOG_LOCAL4 },
{ "local5", LOG_LOCAL5 },
{ "local6", LOG_LOCAL6 },
{ "local7", LOG_LOCAL7 },
{ 0, 0 }
};
void
syslogInfo(void)
{
int tot;
struct nameval *nvp;
tot = 0;
nvp = prioritynames;
printf("\nValid 'priority' names:\n");
while(nvp->name) {
printf("%12s",nvp->name);
nvp++;
if (++tot == 4) {
printf("\n");
tot = 0;
}
}
tot = 0;
nvp = facilitynames;
printf("\nValid 'facility' names:\n");
while(nvp->name) {
printf("%12s",nvp->name);
nvp++;
if (++tot == 4) {
printf("\n");
tot = 0;
}
}
}
int
getPriorityValue(char *prio)
{
struct nameval *nvp;
if (prio == 0)
return(0);
nvp = prioritynames;
while(nvp->name) {
if (!strcmp(nvp->name,prio))
return(nvp->val);
nvp++;
}
return(-1);
}
int
getFacilityValue(char *fac)
{
struct nameval *nvp;
if (fac == 0)
return(0);
nvp = facilitynames;
while(nvp->name) {
if (!strcmp(nvp->name,fac))
return(nvp->val);
nvp++;
}
return(-1);
}
int
sendSyslog(uchar *syslogsrvr,char *msg, short port, int null)
{
int msglen;
uchar *syslogmsg;
ushort ip_len, sport;
struct ether_header *enetp;
struct ip *ipp;
struct Udphdr *udpp;
uchar binip[8], binenet[8], *enetaddr;
/* msglen is the length of the message, plus optionally the
* terminating null character (-n option of syslog command)..
*/
msglen = strlen(msg) + null;
/* Convert IP address to binary:
*/
if (IpToBin((char *)syslogsrvr,(unsigned char *)binip) < 0)
return(0);
/* Get the ethernet address for the IP:
*/
enetaddr = ArpEther(binip,binenet,0);
if (!enetaddr) {
printf("ARP failed for %s\n",syslogsrvr);
return(0);
}
/* Retrieve an ethernet buffer from the driver and populate the
* ethernet level of packet:
*/
enetp = (struct ether_header *) getXmitBuffer();
memcpy((char *)&enetp->ether_shost,(char *)BinEnetAddr,6);
memcpy((char *)&enetp->ether_dhost,(char *)binenet,6);
enetp->ether_type = ecs(ETHERTYPE_IP);
/* Move to the IP portion of the packet and populate it
* appropriately:
*/
ipp = (struct ip *) (enetp + 1);
ipp->ip_vhl = IP_HDR_VER_LEN;
ipp->ip_tos = 0;
ip_len = sizeof(struct ip) + sizeof(struct Udphdr) + msglen;
ipp->ip_len = ecs(ip_len);
ipp->ip_id = ipId();
ipp->ip_off = 0;
ipp->ip_ttl = UDP_TTL;
ipp->ip_p = IP_UDP;
memcpy((char *)&ipp->ip_src.s_addr,(char *)BinIpAddr,4);
memcpy((char *)&ipp->ip_dst.s_addr,(char *)binip,4);
/* Now UDP...
*/
sport = port+1;
udpp = (struct Udphdr *) (ipp + 1);
udpp->uh_sport = ecs(sport);
udpp->uh_dport = ecs(port);
udpp->uh_ulen = ecs((ushort)(ip_len - sizeof(struct ip)));
/* Finally, the SYSLOG data ...
*/
syslogmsg = (uchar *)(udpp+1);
strcpy((char *)syslogmsg,(char *)msg);
ipChksum(ipp); /* Compute csum of ip hdr */
udpChksum(ipp); /* Compute UDP checksum */
sendBuffer(ETHERSIZE + IPSIZE + UDPSIZE + msglen);
return(0);
}
char *SyslogHelp[] = {
"Syslog client",
"-[f:lP:np:v] {srvr ip} {msg}",
#if INCLUDE_VERBOSEHELP
"Options:",
" -f {fac} specify facility",
" -l list facility & priority strings",
" -n append null-char to message",
" -P {##} override default port 514",
" -p {prio} specify priority",
" -v verbose",
#endif
0,
};
int
SyslogCmd(int argc, char *argv[])
{
char *facility, *priority, *msg;
int opt, verbose, fac_val, prio_val, val, port, null;
port = SYSLOG_PORT;
facility = priority = 0;
null = fac_val = prio_val = verbose = 0;
while((opt=getopt(argc,argv,"f:lnP:p:v")) != -1) {
switch(opt) {
case 'f':
facility = optarg;
break;
case 'l':
syslogInfo();
return(CMD_SUCCESS);
case 'n':
null = 1;
break;
case 'P':
port = atoi(optarg);
break;
case 'p':
priority = optarg;
break;
case 'v':
verbose = 1;
break;
default:
return(CMD_PARAM_ERROR);
}
}
if (argc != optind+2)
return(CMD_PARAM_ERROR);
prio_val = getPriorityValue(priority);
fac_val = getFacilityValue(facility);
if ((prio_val == -1) || (fac_val == -1))
return(CMD_PARAM_ERROR);
val = (prio_val | fac_val);
if ((priority != 0) || (facility != 0)) {
msg = malloc(strlen(argv[optind+1])+16);
if (!msg)
return(CMD_FAILURE);
sprintf(msg,"<%d>%s",val,argv[optind+1]);
}
else
msg = argv[optind+1];
if (verbose)
printf("Syslog msg '%s' to %s\n",msg,argv[optind]);
sendSyslog((unsigned char *)argv[optind],msg,port,null);
if (val)
free(msg);
return(CMD_SUCCESS);
}
#endif
