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authorRainer Gerhards <rgerhards@adiscon.com>2007-07-02 17:41:14 +0000
committerRainer Gerhards <rgerhards@adiscon.com>2007-07-02 17:41:14 +0000
commit05069d4f78187cb368206d713ba81cabd033d3d6 (patch)
treeb40413de496b16575f71b0e087e6d08320543b38 /syslogd.c
parent7dd5e863ed00659994172831739e7eb3ef1e4b3f (diff)
downloadrsyslog-05069d4f78187cb368206d713ba81cabd033d3d6.tar.gz
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restored "-r 0" /etc/service lookup; improved debug output
Diffstat (limited to 'syslogd.c')
-rw-r--r--syslogd.c103
1 files changed, 80 insertions, 23 deletions
diff --git a/syslogd.c b/syslogd.c
index a367fade..2eefb399 100644
--- a/syslogd.c
+++ b/syslogd.c
@@ -747,6 +747,15 @@ int repeatinterval[] = { 30, 60 }; /* # of secs before flush */
(f)->f_repeatcount = MAXREPEAT; \
}
#ifdef SYSLOG_INET
+union sockunion {
+ struct sockinet {
+ u_char si_len;
+ u_char si_family;
+ } su_si;
+ struct sockaddr_in su_sin;
+ struct sockaddr_in6 su_sin6;
+};
+
#define INET_SUSPEND_TIME 60 /* equal to 1 minute
* rgerhards, 2005-07-26: This was 3 minutes. As the
* same timer is used for tcp based syslog, we have
@@ -1068,6 +1077,8 @@ static void PrintAllowedSenders(int iListToPrint)
}
#endif /* #ifdef SYSLOG_INET */
+
+
#ifdef SYSLOG_INET
/* check if a sender is allowed. The root of the the allowed sender.
* list must be proveded by the caller. As such, this function can be
@@ -1083,14 +1094,7 @@ static int isAllowedSender(struct AllowedSenders *pAllowRoot, struct sockaddr_st
struct AllowedSenders *pAllow;
unsigned long ulAddrInLocalByteOrder;
- union sockunion {
- struct sockinet {
- u_char si_len;
- u_char si_family;
- } su_si;
- struct sockaddr_in su_sin;
- struct sockaddr_in6 su_sin6;
- } *pFromAddr;
+ union sockunion *pFromAddr;
assert(pFrom != NULL);
@@ -1879,6 +1883,8 @@ static int TCPSendCreateSocket(struct filed *f)
r = r->ai_next;
}
+ dprintf("no working socket could be obtained");
+
return -1;
}
@@ -6779,6 +6785,7 @@ static void init()
char cline[BUFSIZ];
#endif
char bufStartUpMsg[512];
+ struct servent *sp;
/* initialize some static variables */
pDfltHostnameCmp = NULL;
@@ -6787,25 +6794,34 @@ static void init()
nextp = NULL;
/* TODO: This code must be re-activated, but of course with the proper
- * IPv6 way of doing things... rgerhards, 2007-0627
+ * IPv6 way of doing things... rgerhards, 2007-06-27
+ * I was told by an IPv6 expert that calling getservbyname() seems to be
+ * still valid, at least for the use case we have. So I re-enabled that
+ * code. rgerhards, 2007-07-02
*/
if(!strcmp(LogPort, "0")) {
/* we shall use the default syslog/udp port, so let's
* look it up.
*/
-#if 0
sp = getservbyname("syslog", "udp");
if (sp == NULL) {
-#endif
errno = 0;
logerror("Could not find syslog/udp port in /etc/services. "
"Now using IANA-assigned default of 514.");
LogPort = "514";
-#if 0
- }
- else
- LogPort = sp->s_port;
-#endif
+ } else {
+ /* we can dynamically allocate memory here and do NOT need
+ * to care about freeing it because even though init() is
+ * called on each restart, the LogPort can never again be
+ * "0". So we will only once run into this part of the code
+ * here. rgerhards, 2007-07-02
+ * We save ourselfs the hassle of dynamic memory management
+ * for the very same reason.
+ */
+ static char defPort[8];
+ snprintf(defPort, sizeof(defPort) * sizeof(char), "%d", sp->s_port);
+ LogPort = defPort;
+ }
}
/* Close all open log files and free log descriptor array.
@@ -7826,10 +7842,8 @@ static rsRetVal cfline(char *line, register struct filed *f)
*/
logerror("Option block not terminated in forwarding action.");
}
- /* extract the host first (we do a trick - we
- * replace the ';' or ':' with a '\0')
- * now skip to port and then template name
- * rgerhards 2005-07-06
+ /* extract the host first (we do a trick - we replace the ';' or ':' with a '\0')
+ * now skip to port and then template name. rgerhards 2005-07-06
*/
for(q = p ; *p && *p != ';' && *p != ':' ; ++p)
/* JUST SKIP */;
@@ -8464,6 +8478,48 @@ int getSubString(char **ppSrc, char *pDst, size_t DstSize, char cSep)
}
+/* print out which socket we are listening on. This is only
+ * a debug aid.
+ */
+static void debugListenInfo(int fd, char *type)
+{
+ char *szFamily;
+ int port;
+ struct sockaddr sa;
+ struct sockaddr_in *ipv4;
+ struct sockaddr_in6 *ipv6;
+ socklen_t saLen = sizeof(sa);
+
+ if(getsockname(fd, &sa, &saLen) == 0) {
+ switch(sa.sa_family) {
+ case PF_INET:
+ szFamily = "IPv4";
+ ipv4 = (struct sockaddr_in*) &sa;
+ port = ntohs(ipv4->sin_port);
+ break;
+ case PF_INET6:
+ szFamily = "IPv6";
+ ipv6 = (struct sockaddr_in6*) &sa;
+ port = ntohs(ipv6->sin6_port);
+ break;
+ default:
+ szFamily = "other";
+ port = -1;
+ break;
+ }
+ dprintf("Listening on %s syslogd socket %d (%s/port %d).\n",
+ type, fd, szFamily, port);
+ return;
+ }
+ perror("getpeername()");
+
+ /* we can not obtain peer info. We are just providing
+ * debug info, so this is no reason to break the program
+ * or do any serious error reporting.
+ */
+ dprintf("Listening on syslogd socket %d - could not obtain peer info.\n", fd);
+}
+
static void mainloop(void)
{
@@ -8523,7 +8579,8 @@ static void mainloop(void)
if(finet != NULL && AcceptRemote) {
for (i = 0; i < *finet; i++) {
if (finet[i+1] != -1) {
- dprintf("Listening on syslogd UDP port, socket %d.\n", finet[i+1]);
+ if(Debug)
+ debugListenInfo(finet[i+1], "UDP");
FD_SET(finet[i+1], &readfds);
if(finet[i+1]>maxfds) maxfds=finet[i+1];
}
@@ -8539,8 +8596,8 @@ static void mainloop(void)
* feature is not yet supported by the current code base.
*/
if (sockTCPLstn[i+1] != -1) {
- dprintf("Listening on syslogd TCP port, socket %d.\n",
- sockTCPLstn[i+1]);
+ if(Debug)
+ debugListenInfo(sockTCPLstn[i+1], "TCP");
FD_SET(sockTCPLstn[i+1], &readfds);
if(sockTCPLstn[i+1]>maxfds) maxfds=sockTCPLstn[i+1];
}