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-rw-r--r--erts/epmd/src/Makefile.in25
-rw-r--r--erts/epmd/src/epmd.c53
-rw-r--r--erts/epmd/src/epmd.h21
-rw-r--r--erts/epmd/src/epmd_cli.c8
-rw-r--r--erts/epmd/src/epmd_int.h9
-rw-r--r--erts/epmd/src/epmd_srv.c212
6 files changed, 156 insertions, 172 deletions
diff --git a/erts/epmd/src/Makefile.in b/erts/epmd/src/Makefile.in
index 498756b468..70a54fe46e 100644
--- a/erts/epmd/src/Makefile.in
+++ b/erts/epmd/src/Makefile.in
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1998-2009. All Rights Reserved.
+# Copyright Ericsson AB 1998-2010. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
@@ -49,15 +49,27 @@ include ../epmd.mk
BINDIR = $(ERL_TOP)/bin/$(TARGET)
OBJDIR = $(ERL_TOP)/erts/obj$(TYPEMARKER)/$(TARGET)
+ERTS_INCL = -I$(ERL_TOP)/erts/include \
+ -I$(ERL_TOP)/erts/include/$(TARGET) \
+ -I$(ERL_TOP)/erts/include/internal \
+ -I$(ERL_TOP)/erts/include/internal/$(TARGET)
+
+# On windows we always need reentrant libraries.
+ifeq ($(TARGET),win32)
+ERTS_INTERNAL_LIBS=-L../../lib/internal/$(TARGET) -lerts_internal_r$(ERTS_LIB_TYPEMARKER) @ERTS_INTERNAL_X_LIBS@
+else
+ERTS_INTERNAL_LIBS=-L../../lib/internal/$(TARGET) -lerts_internal$(ERTS_LIB_TYPEMARKER) @ERTS_INTERNAL_X_LIBS@ -lm
+endif
CC = @CC@
WFLAGS = @WFLAGS@
-CFLAGS = @CFLAGS@ @DEFS@ $(TYPE_FLAGS) $(WFLAGS)
+CFLAGS = @CFLAGS@ @DEFS@ $(TYPE_FLAGS) $(WFLAGS) $(ERTS_INCL)
LD = @LD@
-LIBS = @LIBS@
+LIBS = @LIBS@ $(ERTS_INTERNAL_LIBS)
LDFLAGS = @LDFLAGS@
+
# ----------------------------------------------------
# Release directory specification
# ----------------------------------------------------
@@ -90,7 +102,7 @@ EPMD_OBJS = $(OBJDIR)/epmd.o \
#---------------------------------
-all: $(BINDIR)/$(EPMD)
+all: erts_lib $(BINDIR)/$(EPMD)
docs:
@@ -109,9 +121,12 @@ clean:
$(BINDIR)/$(EPMD): $(EPMD_OBJS)
$(PURIFY) $(LD) $(LDFLAGS) -o $@ $(EPMD_OBJS) $(LIBS)
-$(OBJDIR)/%.o: %.c
+$(OBJDIR)/%.o: %.c epmd.h epmd_int.h
$(CC) $(CFLAGS) $(EPMD_FLAGS) -o $@ -c $<
+erts_lib:
+ cd $(ERL_TOP)/erts/lib_src && $(MAKE) $(TYPE)
+
include $(ERL_TOP)/make/otp_release_targets.mk
release_spec: all
diff --git a/erts/epmd/src/epmd.c b/erts/epmd/src/epmd.c
index 9c2ce065bb..65ff0cd6b2 100644
--- a/erts/epmd/src/epmd.c
+++ b/erts/epmd/src/epmd.c
@@ -23,6 +23,7 @@
#endif
#include "epmd.h" /* Renamed from 'epmd_r4.h' */
#include "epmd_int.h"
+#include "erl_printf.h"
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
@@ -33,6 +34,7 @@
static void usage(EpmdVars *);
static void run_daemon(EpmdVars*);
static int get_port_no(void);
+static int check_relaxed(void);
#ifdef __WIN32__
static int has_console(void);
#endif
@@ -161,6 +163,7 @@ int main(int argc, char** argv)
g->silent = 0;
g->is_daemon = 0;
+ g->brutal_kill = check_relaxed();
g->packet_timeout = CLOSE_TIMEOUT; /* Default timeout */
g->delay_accept = 0;
g->delay_write = 0;
@@ -196,6 +199,9 @@ int main(int argc, char** argv)
} else if (strcmp(argv[0], "-daemon") == 0) {
g->is_daemon = 1;
argv++; argc--;
+ } else if (strcmp(argv[0], "-relaxed_command_check") == 0) {
+ g->brutal_kill = 1;
+ argv++; argc--;
} else if (strcmp(argv[0], "-kill") == 0) {
if (argc == 1)
kill_epmd(g);
@@ -388,9 +394,10 @@ static void run_daemon(EpmdVars *g)
static void usage(EpmdVars *g)
{
fprintf(stderr, "usage: epmd [-d|-debug] [DbgExtra...] [-port No] [-daemon]\n");
- fprintf(stderr, " [-d|-debug] [-port No] [-names|-kill|-stop name]\n\n");
- fprintf(stderr, "See the Erlang epmd manual page for info about the usage.\n");
- fprintf(stderr, "The -port and DbgExtra options are\n\n");
+ fprintf(stderr, " [-relaxed_command_check]\n");
+ fprintf(stderr, " epmd [-d|-debug] [-port No] [-names|-kill|-stop name]\n\n");
+ fprintf(stderr, "See the Erlang epmd manual page for info about the usage.\n\n");
+ fprintf(stderr, "Regular options\n");
fprintf(stderr, " -port No\n");
fprintf(stderr, " Let epmd listen to another port than default %d\n",
EPMD_PORT_NO);
@@ -400,8 +407,16 @@ static void usage(EpmdVars *g)
fprintf(stderr, " the standard error stream. It will shorten\n");
fprintf(stderr, " the number of saved used node names to 5.\n\n");
fprintf(stderr, " If you give more than one debug flag you may\n");
- fprintf(stderr, " get more debugging information.\n\n");
- fprintf(stderr, " -packet_timout Seconds\n");
+ fprintf(stderr, " get more debugging information.\n");
+ fprintf(stderr, " -daemon\n");
+ fprintf(stderr, " Start epmd detached (as a daemon)\n");
+ fprintf(stderr, " -relaxed_command_check\n");
+ fprintf(stderr, " Allow this instance of epmd to be killed with\n");
+ fprintf(stderr, " epmd -kill even if there "
+ "are registered nodes.\n");
+ fprintf(stderr, " Also allows forced unregister (epmd -stop).\n");
+ fprintf(stderr, "\nDbgExtra options\n");
+ fprintf(stderr, " -packet_timeout Seconds\n");
fprintf(stderr, " Set the number of seconds a connection can be\n");
fprintf(stderr, " inactive before epmd times out and closes the\n");
fprintf(stderr, " connection (default 60).\n\n");
@@ -413,6 +428,18 @@ static void usage(EpmdVars *g)
fprintf(stderr, " -delay_write Seconds\n");
fprintf(stderr, " Also a simulation of a busy server. Inserts\n");
fprintf(stderr, " a delay before a reply is sent.\n");
+ fprintf(stderr, "\nInteractive options\n");
+ fprintf(stderr, " -names\n");
+ fprintf(stderr, " List names registered with the currently "
+ "running epmd\n");
+ fprintf(stderr, " -kill\n");
+ fprintf(stderr, " Kill the currently runniing epmd\n");
+ fprintf(stderr, " (only allowed if -names show empty database or\n");
+ fprintf(stderr, " -relaxed_command_check was given when epmd was started).\n");
+ fprintf(stderr, " -stop Name\n");
+ fprintf(stderr, " Forcibly unregisters a name with epmd\n");
+ fprintf(stderr, " (only allowed if -relaxed_command_check was given when \n");
+ fprintf(stderr, " epmd was started).\n");
epmd_cleanup_exit(g,1);
}
@@ -432,20 +459,20 @@ static void usage(EpmdVars *g)
* args... Arguments to print out according to the format
*
*/
-
+#define DEBUG_BUFFER_SIZE 2048
static void dbg_gen_printf(int onsyslog,int perr,int from_level,
EpmdVars *g,const char *format, va_list args)
{
time_t now;
char *timestr;
- char buf[2048];
+ char buf[DEBUG_BUFFER_SIZE];
if (g->is_daemon)
{
#ifndef NO_SYSLOG
if (onsyslog)
{
- vsprintf(buf, format, args);
+ erts_vsnprintf(buf, DEBUG_BUFFER_SIZE, format, args);
syslog(LOG_ERR,"epmd: %s",buf);
}
#endif
@@ -456,9 +483,10 @@ static void dbg_gen_printf(int onsyslog,int perr,int from_level,
time(&now);
timestr = (char *)ctime(&now);
- sprintf(buf, "epmd: %.*s: ", (int) strlen(timestr)-1, timestr);
+ erts_snprintf(buf, DEBUG_BUFFER_SIZE, "epmd: %.*s: ",
+ (int) strlen(timestr)-1, timestr);
len = strlen(buf);
- vsprintf(buf + len, format, args);
+ erts_vsnprintf(buf + len, DEBUG_BUFFER_SIZE - len, format, args);
if (perr == 1)
perror(buf);
else
@@ -545,4 +573,9 @@ static int get_port_no(void)
char* port_str = getenv("ERL_EPMD_PORT");
return (port_str != NULL) ? atoi(port_str) : EPMD_PORT_NO;
}
+static int check_relaxed(void)
+{
+ char* port_str = getenv("ERL_EPMD_RELAXED_COMMAND_CHECK");
+ return (port_str != NULL) ? 1 : 0;
+}
diff --git a/erts/epmd/src/epmd.h b/erts/epmd/src/epmd.h
index 9e939ee38e..5d6e9ac165 100644
--- a/erts/epmd/src/epmd.h
+++ b/erts/epmd/src/epmd.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * Copyright Ericsson AB 1998-2010. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
@@ -17,21 +17,18 @@
* %CopyrightEnd%
*/
-/* The port number is now defined in a makefile */
+/* The port number is defined in a makefile */
/* Definitions of message codes */
-#define EPMD_ALIVE_REQ 'a'
-#define EPMD_ALIVE_OK_RESP 'Y'
-#define EPMD_PORT_REQ 'p'
+/* Registration and queries */
+#define EPMD_ALIVE2_REQ 'x'
+#define EPMD_PORT2_REQ 'z'
+#define EPMD_ALIVE2_RESP 'y'
+#define EPMD_PORT2_RESP 'w'
#define EPMD_NAMES_REQ 'n'
+
+/* Interactive client command codes */
#define EPMD_DUMP_REQ 'd'
#define EPMD_KILL_REQ 'k'
#define EPMD_STOP_REQ 's'
-
-/* New epmd messages */
-
-#define EPMD_ALIVE2_REQ 'x' /* 120 */
-#define EPMD_PORT2_REQ 'z' /* 122 */
-#define EPMD_ALIVE2_RESP 'y' /* 121 */
-#define EPMD_PORT2_RESP 'w' /* 119 */
diff --git a/erts/epmd/src/epmd_cli.c b/erts/epmd/src/epmd_cli.c
index 2aed861390..7c60ba0420 100644
--- a/erts/epmd/src/epmd_cli.c
+++ b/erts/epmd/src/epmd_cli.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * Copyright Ericsson AB 1998-2010. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
@@ -42,7 +42,11 @@ void kill_epmd(EpmdVars *g)
epmd_cleanup_exit(g,1);
}
if ((rval = read_fill(fd,buf,2)) == 2) {
- printf("Killed\n");
+ if (buf[0] == 'O' && buf[1] == 'K') {
+ printf("Killed\n");
+ } else {
+ printf("Killing not allowed - living nodes in database.\n");
+ }
epmd_cleanup_exit(g,0);
} else if (rval < 0) {
printf("epmd: failed to read answer from local epmd\n");
diff --git a/erts/epmd/src/epmd_int.h b/erts/epmd/src/epmd_int.h
index 5ead553f36..c2558d52a1 100644
--- a/erts/epmd/src/epmd_int.h
+++ b/erts/epmd/src/epmd_int.h
@@ -1,3 +1,4 @@
+/* -*- c-indent-level: 2; c-continued-statement-offset: 2 -*- */
/*
* %CopyrightBegin%
*
@@ -245,8 +246,10 @@
typedef struct {
int fd; /* File descriptor */
- unsigned open:1; /* TRUE if open */
- unsigned keep:1; /* Don't close when sent reply */
+ unsigned char open; /* TRUE if open */
+ unsigned char keep; /* Don't close when sent reply */
+ unsigned char local_peer; /* The peer of this connection is via
+ loopback interface */
unsigned got; /* # of bytes we have got */
unsigned want; /* Number of bytes we want */
char *buf; /* The remaining buffer */
@@ -286,6 +289,7 @@ typedef struct {
int debug;
int silent;
int is_daemon;
+ int brutal_kill;
unsigned packet_timeout;
unsigned delay_accept;
unsigned delay_write;
@@ -307,6 +311,7 @@ void epmd_call(EpmdVars*,int);
void run(EpmdVars*);
void epmd_cleanup_exit(EpmdVars*, int);
int epmd_conn_close(EpmdVars*,Connection*);
+void stop_cli(EpmdVars *g, char *name);
#ifdef DONT_USE_MAIN
int start_epmd(char *,char *,char *,char *,char *,char *,char *,char *,char *,char *);
diff --git a/erts/epmd/src/epmd_srv.c b/erts/epmd/src/epmd_srv.c
index c836bf0bb7..df4d1a5715 100644
--- a/erts/epmd/src/epmd_srv.c
+++ b/erts/epmd/src/epmd_srv.c
@@ -47,38 +47,6 @@
* | Length | Request |
* +--------+---------+
*
- * In all but one case there is only one request for each connection made
- * to this server so we can safely close the socket after sending the
- * reply. The exception is ALIVE_REQ where we keep the connection
- * open without sending any data. When we receive a "close" this is
- * an indication that the Erlang node was terminated. The termination
- * may have been "normal" or caused by a crash. The operating system
- * ensure that the connection is closed either way.
- *
- * Reading is done non-blocking, i.e. we call a "read" only if we are
- * told by the "select" function that there are data to read.
- *
- * Two databases are used: One node database where the registered names
- * of the nodes are stored, and one connection database where the state
- * of sockets and the data buffers is stored.
- *
- * Incomplete packets are thrown away after a timout. The Erlang node
- * doing the request is responsible for completing in it in a reasonable time.
- *
- * Note that if the server gets busy it may not have time to
- * process all requests for connection. The "accept()" function
- * will on most operating systems silently refuse to accept more
- * than 5 outstanding requests. It is the client's responsibility
- * to retry the request a number of times with random time interval.
- * The "-debug" flag will insert a delay so you can test this
- * behaviour.
- *
- * FIXME: In this code we assume that the packets we send on each
- * socket is so small that a "write()" never block
- *
- * FIXME: We never restarts a read or write that was terminated
- * by an interrupt. Do we need to?
- *
*/
/* We use separate data structures for node names and connections
@@ -98,7 +66,6 @@ static int conn_open(EpmdVars*,int);
static int conn_close_fd(EpmdVars*,int);
static void node_init(EpmdVars*);
-static Node *node_reg(EpmdVars*,char*,int,int);
static Node *node_reg2(EpmdVars*,char*, int, int, unsigned char, unsigned char, int, int, int, char*);
static int node_unreg(EpmdVars*,char*);
static int node_unreg_sock(EpmdVars*,int);
@@ -303,11 +270,9 @@ static void do_read(EpmdVars *g,Connection *s)
s->fd,val);
dbg_print_buf(g,s->buf,val);
- /* FIXME: Shouldn't be needed to close down.... */
node_unreg_sock(g,s->fd);
epmd_conn_close(g,s);
}
- /* FIXME: We always close, probably the right thing to do */
return;
}
@@ -405,6 +370,8 @@ static int do_accept(EpmdVars *g,int listensock)
return conn_open(g,msgsock);
}
+/* buf is actually one byte larger than bsize,
+ giving place for null termination */
static void do_request(g, fd, s, buf, bsize)
EpmdVars *g;
int fd;
@@ -415,117 +382,23 @@ static void do_request(g, fd, s, buf, bsize)
char wbuf[OUTBUF_SIZE]; /* Buffer for writing */
int i;
- /*
- * Terminate packet as a C string. Needed for requests received from Erlang
- * nodes with lower version than R3A.
- */
-
- buf[bsize] = '\0';
+ buf[bsize] = '\0'; /* Needed for strcmp in PORT2 and STOP requests
+ buf is always large enough */
switch (*buf)
{
- case EPMD_ALIVE_REQ:
- dbg_printf(g,1,"** got ALIVE_REQ");
-
- /* The packet has the format "axxyyyyyy" where xx is port, given
- in network byte order, and yyyyyy is symname, possibly null
- terminated. */
-
- if (buf[bsize - 1] == '\000') /* Skip null termination */
- bsize--;
-
- if (bsize <= 3)
- {
- dbg_printf(g,0,"packet to small for request ALIVE_REQ (%d)", bsize);
- return;
- }
-
- for (i = 3; i < bsize; i++)
- if (buf[i] == '\000')
- {
- dbg_printf(g,0,"node name contains ascii 0 in ALIVE_REQ");
- return;
- }
-
- {
- Node *node;
- int eport;
- char *name = &buf[3]; /* points to node name */
-
- eport = get_int16(&buf[1]);
-
- if ((node = node_reg(g, name, fd, eport)) == NULL)
- return;
-
- wbuf[0] = EPMD_ALIVE_OK_RESP;
- put_int16(node->creation, wbuf+1);
-
- if (g->delay_write) /* Test of busy server */
- sleep(g->delay_write);
-
- if (reply(g, fd, wbuf, 3) != 3)
- {
- dbg_tty_printf(g,1,"failed to send ALIVE_OK_RESP for \"%s\"",name);
- return;
- }
-
- dbg_tty_printf(g,1,"** sent ALIVE_OK_RESP for \"%s\"",name);
- s->keep = EPMD_TRUE; /* Don't close on inactivity */
- }
- break;
-
- case EPMD_PORT_REQ:
- dbg_printf(g,1,"** got PORT_REQ");
-
- if (buf[bsize - 1] == '\000') /* Skip null termination */
- bsize--;
-
- if (bsize <= 1)
- {
- dbg_printf(g,0,"packet to small for request PORT_REQ (%d)", bsize);
- return;
- }
-
- for (i = 1; i < bsize; i++)
- if (buf[i] == '\000')
- {
- dbg_printf(g,0,"node name contains ascii 0 in PORT_REQ");
- return;
- }
-
- {
- char *name = &buf[1]; /* Points to node name */
- Node *node;
-
- for (node = g->nodes.reg; node; node = node->next)
- {
- if (strcmp(node->symname, name) == 0)
- {
- put_int16(node->port,wbuf);
- if (reply(g, fd, wbuf, 2) != 2)
- {
- dbg_tty_printf(g,1,"failed to send PORT_RESP for %s: %d",
- name,node->port);
- return;
- }
- dbg_tty_printf(g,1,"** sent PORT_RESP for %s: %d",
- name,node->port);
- return;
- }
- }
- dbg_tty_printf(g,1,"Closed on PORT_REQ for %s",name);
- }
- /* FIXME: How about an answer if no port? Is a close enough? */
- break;
-
case EPMD_ALIVE2_REQ:
dbg_printf(g,1,"** got ALIVE2_REQ");
+ if (!s->local_peer) {
+ dbg_printf(g,0,"ALIVE2_REQ from non local address");
+ return;
+ }
/* The packet has the format "axxyyyyyy" where xx is port, given
in network byte order, and yyyyyy is symname, possibly null
terminated. */
- if (bsize <= 13)
+ if (bsize <= 13) /* at least one character for the node name */
{
dbg_printf(g,0,"packet to small for request ALIVE2_REQ (%d)",bsize);
return;
@@ -548,7 +421,17 @@ static void do_request(g, fd, s, buf, bsize)
highvsn = get_int16(&buf[5]);
lowvsn = get_int16(&buf[7]);
namelen = get_int16(&buf[9]);
+ if (namelen + 13 > bsize) {
+ dbg_printf(g,0,"Node name size error in ALIVE2_REQ");
+ return;
+ }
extralen = get_int16(&buf[11+namelen]);
+
+ if (extralen + namelen + 13 > bsize) {
+ dbg_printf(g,0,"Extra info size error in ALIVE2_REQ");
+ return;
+ }
+
for (i = 11 ; i < 11 + namelen; i ++)
if (buf[i] == '\000') {
dbg_printf(g,0,"node name contains ascii 0 in ALIVE2_REQ");
@@ -679,6 +562,10 @@ static void do_request(g, fd, s, buf, bsize)
case EPMD_DUMP_REQ:
dbg_printf(g,1,"** got DUMP_REQ");
+ if (!s->local_peer) {
+ dbg_printf(g,0,"DUMP_REQ from non local address");
+ return;
+ }
{
Node *node;
@@ -728,7 +615,19 @@ static void do_request(g, fd, s, buf, bsize)
break;
case EPMD_KILL_REQ:
+ if (!s->local_peer) {
+ dbg_printf(g,0,"KILL_REQ from non local address");
+ return;
+ }
dbg_printf(g,1,"** got KILL_REQ");
+
+ if (!g->brutal_kill && (g->nodes.reg != NULL)) {
+ dbg_printf(g,0,"Disallowed KILL_REQ, live nodes");
+ if (reply(g, fd,"NO",2) != 2)
+ dbg_printf(g,0,"failed to send reply to KILL_REQ");
+ return;
+ }
+
if (reply(g, fd,"OK",2) != 2)
dbg_printf(g,0,"failed to send reply to KILL_REQ");
dbg_tty_printf(g,1,"epmd killed");
@@ -738,6 +637,15 @@ static void do_request(g, fd, s, buf, bsize)
case EPMD_STOP_REQ:
dbg_printf(g,1,"** got STOP_REQ");
+ if (!s->local_peer) {
+ dbg_printf(g,0,"STOP_REQ from non local address");
+ return;
+ }
+ if (!g->brutal_kill) {
+ dbg_printf(g,0,"Disallowed STOP_REQ, no relaxed_command_check");
+ return;
+ }
+
if (bsize <= 1 )
{
dbg_printf(g,0,"packet too small for request STOP_REQ (%d)",bsize);
@@ -825,6 +733,14 @@ static int conn_open(EpmdVars *g,int fd)
for (i = 0; i < g->max_conn; i++) {
if (g->conn[i].open == EPMD_FALSE) {
+ struct sockaddr_in si;
+#ifdef HAVE_SOCKLEN_T
+ socklen_t st;
+#else
+ int st;
+#endif
+ st = sizeof(si);
+
g->active_conn++;
s = &g->conn[i];
@@ -834,6 +750,20 @@ static int conn_open(EpmdVars *g,int fd)
s->fd = fd;
s->open = EPMD_TRUE;
s->keep = EPMD_FALSE;
+
+ /* Determine if connection is from localhost */
+ if (getpeername(s->fd,(struct sockaddr*) &si,&st) ||
+ st < sizeof(si)) {
+ /* Failure to get peername is regarder as non local host */
+ s->local_peer = EPMD_FALSE;
+ } else {
+ s->local_peer =
+ ((((unsigned) ntohl(si.sin_addr.s_addr)) & 0xFF000000U) ==
+ 0x7F000000U); /* Only 127.x.x.x allowed, no false positives */
+ }
+ dbg_tty_printf(g,2,(s->local_peer) ? "Local peer connected" :
+ "Non-local peer connected");
+
s->want = 0; /* Currently unknown */
s->got = 0;
s->mod_time = current_time(g); /* Note activity */
@@ -990,11 +920,6 @@ static int node_unreg_sock(EpmdVars *g,int fd)
* Perhaps use the oldest or something.
*/
-static Node *node_reg(EpmdVars *g,char *name,int fd, int port)
-{
- return node_reg2(g, name, fd, port, 0, 0, 0, 0, 0, NULL);
-}
-
static Node *node_reg2(EpmdVars *g,
char* name,
int fd,
@@ -1020,6 +945,11 @@ static Node *node_reg2(EpmdVars *g,
dbg_printf(g,0,"node name is too long (%d) %s", strlen(name), name);
return NULL;
}
+ if (extralen > MAXSYMLEN)
+ {
+ dbg_printf(g,0,"extra data is too long (%d) %s", strlen(name), name);
+ return NULL;
+ }
/* Fail if it is already registered */
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-26 20:55:13 +0000