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frr/ldpd/log.c
Renato Westphal 0bcc2916a0 ldpd: implement support for PWid group wildcards 
This was missing from our original RFC 4447 VPLS implementation. Now
ldpd understands group wildcards as mandated by the RFC, but we still
don't send them ourselves. I can't see any case in which sending a group
wildcard would be useful, but nonetheless this patch provides a function
called lde_send_labelwithdraw_pwid_wcard() which is ready to be used in
the future anytime we feel like it might be useful.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
2017-03-03 17:50:22 -03:00

585 lines
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/* $OpenBSD$ */
/*
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <zebra.h>
#include "ldpd.h"
#include "ldpe.h"
#include "lde.h"
#include "log.h"
#include <lib/log.h>
#include "mpls.h"
static const char * const procnames[] = {
"parent",
"ldpe",
"lde"
};
void vlog(int, const char *, va_list);
void
logit(int pri, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vlog(pri, fmt, ap);
va_end(ap);
}
void
vlog(int pri, const char *fmt, va_list ap)
{
char buf[1024];
switch (ldpd_process) {
case PROC_LDE_ENGINE:
vsnprintf(buf, sizeof(buf), fmt, ap);
lde_imsg_compose_parent(IMSG_LOG, pri, buf, strlen(buf) + 1);
break;
case PROC_LDP_ENGINE:
vsnprintf(buf, sizeof(buf), fmt, ap);
ldpe_imsg_compose_parent(IMSG_LOG, pri, buf, strlen(buf) + 1);
break;
case PROC_MAIN:
vzlog(NULL, pri, fmt, ap);
break;
}
}
void
log_warn(const char *emsg, ...)
{
char *nfmt;
va_list ap;
/* best effort to even work in out of memory situations */
if (emsg == NULL)
logit(LOG_CRIT, "%s", strerror(errno));
else {
va_start(ap, emsg);
if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) {
/* we tried it... */
vlog(LOG_CRIT, emsg, ap);
logit(LOG_CRIT, "%s", strerror(errno));
} else {
vlog(LOG_CRIT, nfmt, ap);
free(nfmt);
}
va_end(ap);
}
}
void
log_warnx(const char *emsg, ...)
{
va_list ap;
va_start(ap, emsg);
vlog(LOG_CRIT, emsg, ap);
va_end(ap);
}
void
log_info(const char *emsg, ...)
{
va_list ap;
va_start(ap, emsg);
vlog(LOG_INFO, emsg, ap);
va_end(ap);
}
void
log_notice(const char *emsg, ...)
{
va_list ap;
va_start(ap, emsg);
vlog(LOG_NOTICE, emsg, ap);
va_end(ap);
}
void
log_debug(const char *emsg, ...)
{
va_list ap;
va_start(ap, emsg);
vlog(LOG_DEBUG, emsg, ap);
va_end(ap);
}
void
fatal(const char *emsg)
{
if (emsg == NULL)
logit(LOG_CRIT, "fatal in %s: %s", procnames[ldpd_process],
strerror(errno));
else
if (errno)
logit(LOG_CRIT, "fatal in %s: %s: %s",
procnames[ldpd_process], emsg, strerror(errno));
else
logit(LOG_CRIT, "fatal in %s: %s",
procnames[ldpd_process], emsg);
exit(1);
}
void
fatalx(const char *emsg)
{
errno = 0;
fatal(emsg);
}
#define NUM_LOGS 4
const char *
log_sockaddr(void *vp)
{
static char buf[NUM_LOGS][NI_MAXHOST];
static int round = 0;
struct sockaddr *sa = vp;
round = (round + 1) % NUM_LOGS;
if (getnameinfo(sa, sockaddr_len(sa), buf[round], NI_MAXHOST, NULL, 0,
NI_NUMERICHOST))
return ("(unknown)");
else
return (buf[round]);
}
const char *
log_in6addr(const struct in6_addr *addr)
{
struct sockaddr_in6 sa_in6;
memset(&sa_in6, 0, sizeof(sa_in6));
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
sa_in6.sin6_len = sizeof(sa_in6);
#endif
sa_in6.sin6_family = AF_INET6;
sa_in6.sin6_addr = *addr;
recoverscope(&sa_in6);
return (log_sockaddr(&sa_in6));
}
const char *
log_in6addr_scope(const struct in6_addr *addr, unsigned int ifindex)
{
struct sockaddr_in6 sa_in6;
memset(&sa_in6, 0, sizeof(sa_in6));
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
sa_in6.sin6_len = sizeof(sa_in6);
#endif
sa_in6.sin6_family = AF_INET6;
sa_in6.sin6_addr = *addr;
addscope(&sa_in6, ifindex);
return (log_sockaddr(&sa_in6));
}
const char *
log_addr(int af, const union ldpd_addr *addr)
{
static char buf[NUM_LOGS][INET6_ADDRSTRLEN];
static int round = 0;
switch (af) {
case AF_INET:
round = (round + 1) % NUM_LOGS;
if (inet_ntop(AF_INET, &addr->v4, buf[round],
sizeof(buf[round])) == NULL)
return ("???");
return (buf[round]);
case AF_INET6:
return (log_in6addr(&addr->v6));
default:
break;
}
return ("???");
}
#define TF_BUFS 4
#define TF_LEN 32
char *
log_label(uint32_t label)
{
char *buf;
static char tfbuf[TF_BUFS][TF_LEN]; /* ring buffer */
static int idx = 0;
buf = tfbuf[idx++];
if (idx == TF_BUFS)
idx = 0;
switch (label) {
case NO_LABEL:
snprintf(buf, TF_LEN, "-");
break;
case MPLS_LABEL_IMPLNULL:
snprintf(buf, TF_LEN, "imp-null");
break;
case MPLS_LABEL_IPV4NULL:
case MPLS_LABEL_IPV6NULL:
snprintf(buf, TF_LEN, "exp-null");
break;
default:
snprintf(buf, TF_LEN, "%u", label);
break;
}
return (buf);
}
const char *
log_time(time_t t)
{
char *buf;
static char tfbuf[TF_BUFS][TF_LEN]; /* ring buffer */
static int idx = 0;
unsigned int sec, min, hrs, day, week;
buf = tfbuf[idx++];
if (idx == TF_BUFS)
idx = 0;
week = t;
sec = week % 60;
week /= 60;
min = week % 60;
week /= 60;
hrs = week % 24;
week /= 24;
day = week % 7;
week /= 7;
if (week > 0)
snprintf(buf, TF_LEN, "%02uw%01ud%02uh", week, day, hrs);
else if (day > 0)
snprintf(buf, TF_LEN, "%01ud%02uh%02um", day, hrs, min);
else
snprintf(buf, TF_LEN, "%02u:%02u:%02u", hrs, min, sec);
return (buf);
}
char *
log_hello_src(const struct hello_source *src)
{
static char buf[64];
switch (src->type) {
case HELLO_LINK:
snprintf(buf, sizeof(buf), "iface %s",
src->link.ia->iface->name);
break;
case HELLO_TARGETED:
snprintf(buf, sizeof(buf), "source %s",
log_addr(src->target->af, &src->target->addr));
break;
}
return (buf);
}
const char *
log_map(const struct map *map)
{
static char buf[128];
switch (map->type) {
case MAP_TYPE_WILDCARD:
if (snprintf(buf, sizeof(buf), "wildcard") < 0)
return ("???");
break;
case MAP_TYPE_PREFIX:
if (snprintf(buf, sizeof(buf), "%s/%u",
log_addr(map->fec.prefix.af, &map->fec.prefix.prefix),
map->fec.prefix.prefixlen) == -1)
return ("???");
break;
case MAP_TYPE_PWID:
if (snprintf(buf, sizeof(buf), "pw-id %u group-id %u (%s)",
map->fec.pwid.pwid, map->fec.pwid.group_id,
pw_type_name(map->fec.pwid.type)) == -1)
return ("???");
break;
default:
return ("???");
}
return (buf);
}
const char *
log_fec(const struct fec *fec)
{
static char buf[64];
union ldpd_addr addr;
switch (fec->type) {
case FEC_TYPE_IPV4:
addr.v4 = fec->u.ipv4.prefix;
if (snprintf(buf, sizeof(buf), "ipv4 %s/%u",
log_addr(AF_INET, &addr), fec->u.ipv4.prefixlen) == -1)
return ("???");
break;
case FEC_TYPE_IPV6:
addr.v6 = fec->u.ipv6.prefix;
if (snprintf(buf, sizeof(buf), "ipv6 %s/%u",
log_addr(AF_INET6, &addr), fec->u.ipv6.prefixlen) == -1)
return ("???");
break;
case FEC_TYPE_PWID:
if (snprintf(buf, sizeof(buf),
"pwid %u (%s) - %s",
fec->u.pwid.pwid, pw_type_name(fec->u.pwid.type),
inet_ntoa(fec->u.pwid.lsr_id)) == -1)
return ("???");
break;
default:
return ("???");
}
return (buf);
}
/* names */
const char *
af_name(int af)
{
switch (af) {
case AF_INET:
return ("ipv4");
case AF_INET6:
return ("ipv6");
#ifdef AF_MPLS
case AF_MPLS:
return ("mpls");
#endif
default:
return ("UNKNOWN");
}
}
const char *
socket_name(int type)
{
switch (type) {
case LDP_SOCKET_DISC:
return ("discovery");
case LDP_SOCKET_EDISC:
return ("extended discovery");
case LDP_SOCKET_SESSION:
return ("session");
default:
return ("UNKNOWN");
}
}
const char *
nbr_state_name(int state)
{
switch (state) {
case NBR_STA_PRESENT:
return ("PRESENT");
case NBR_STA_INITIAL:
return ("INITIALIZED");
case NBR_STA_OPENREC:
return ("OPENREC");
case NBR_STA_OPENSENT:
return ("OPENSENT");
case NBR_STA_OPER:
return ("OPERATIONAL");
default:
return ("UNKNOWN");
}
}
const char *
if_state_name(int state)
{
switch (state) {
case IF_STA_DOWN:
return ("DOWN");
case IF_STA_ACTIVE:
return ("ACTIVE");
default:
return ("UNKNOWN");
}
}
const char *
if_type_name(enum iface_type type)
{
switch (type) {
case IF_TYPE_POINTOPOINT:
return ("POINTOPOINT");
case IF_TYPE_BROADCAST:
return ("BROADCAST");
}
/* NOTREACHED */
return ("UNKNOWN");
}
const char *
msg_name(uint16_t msg)
{
static char buf[16];
switch (msg) {
case MSG_TYPE_NOTIFICATION:
return ("notification");
case MSG_TYPE_HELLO:
return ("hello");
case MSG_TYPE_INIT:
return ("initialization");
case MSG_TYPE_KEEPALIVE:
return ("keepalive");
case MSG_TYPE_ADDR:
return ("address");
case MSG_TYPE_ADDRWITHDRAW:
return ("address withdraw");
case MSG_TYPE_LABELMAPPING:
return ("label mapping");
case MSG_TYPE_LABELREQUEST:
return ("label request");
case MSG_TYPE_LABELWITHDRAW:
return ("label withdraw");
case MSG_TYPE_LABELRELEASE:
return ("label release");
case MSG_TYPE_LABELABORTREQ:
default:
snprintf(buf, sizeof(buf), "[%08x]", msg);
return (buf);
}
}
const char *
status_code_name(uint32_t status)
{
static char buf[16];
switch (status) {
case S_SUCCESS:
return ("Success");
case S_BAD_LDP_ID:
return ("Bad LDP Identifier");
case S_BAD_PROTO_VER:
return ("Bad Protocol Version");
case S_BAD_PDU_LEN:
return ("Bad PDU Length");
case S_UNKNOWN_MSG:
return ("Unknown Message Type");
case S_BAD_MSG_LEN:
return ("Bad Message Length");
case S_UNKNOWN_TLV:
return ("Unknown TLV");
case S_BAD_TLV_LEN:
return ("Bad TLV Length");
case S_BAD_TLV_VAL:
return ("Malformed TLV Value");
case S_HOLDTIME_EXP:
return ("Hold Timer Expired");
case S_SHUTDOWN:
return ("Shutdown");
case S_LOOP_DETECTED:
return ("Loop Detected");
case S_UNKNOWN_FEC:
return ("Unknown FEC");
case S_NO_ROUTE:
return ("No Route");
case S_NO_LABEL_RES:
return ("No Label Resources");
case S_AVAILABLE:
return ("Label Resources Available");
case S_NO_HELLO:
return ("Session Rejected, No Hello");
case S_PARM_ADV_MODE:
return ("Rejected Advertisement Mode Parameter");
case S_MAX_PDU_LEN:
return ("Rejected Max PDU Length Parameter");
case S_PARM_L_RANGE:
return ("Rejected Label Range Parameter");
case S_KEEPALIVE_TMR:
return ("KeepAlive Timer Expired");
case S_LAB_REQ_ABRT:
return ("Label Request Aborted");
case S_MISS_MSG:
return ("Missing Message Parameters");
case S_UNSUP_ADDR:
return ("Unsupported Address Family");
case S_KEEPALIVE_BAD:
return ("Bad KeepAlive Time");
case S_INTERN_ERR:
return ("Internal Error");
case S_ILLEGAL_CBIT:
return ("Illegal C-Bit");
case S_WRONG_CBIT:
return ("Wrong C-Bit");
case S_INCPT_BITRATE:
return ("Incompatible bit-rate");
case S_CEP_MISCONF:
return ("CEP-TDM mis-configuration");
case S_PW_STATUS:
return ("PW Status");
case S_UNASSIGN_TAI:
return ("Unassigned/Unrecognized TAI");
case S_MISCONF_ERR:
return ("Generic Misconfiguration Error");
case S_WITHDRAW_MTHD:
return ("Label Withdraw PW Status Method");
case S_TRANS_MISMTCH:
return ("Transport Connection Mismatch");
case S_DS_NONCMPLNCE:
return ("Dual-Stack Noncompliance");
default:
snprintf(buf, sizeof(buf), "[%08x]", status);
return (buf);
}
}
const char *
pw_type_name(uint16_t pw_type)
{
static char buf[64];
switch (pw_type) {
case PW_TYPE_ETHERNET_TAGGED:
return ("Eth Tagged");
case PW_TYPE_ETHERNET:
return ("Ethernet");
default:
snprintf(buf, sizeof(buf), "[%0x]", pw_type);
return (buf);
}
}
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