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-rw-r--r--nxcomp/src/ChannelEndPoint.cpp26
-rw-r--r--nxcomp/src/Log.h16
-rw-r--r--nxcomp/src/Loop.cpp32
-rw-r--r--nxcomp/src/Misc.h3
-rw-r--r--nxcomp/src/Pipe.cpp6
5 files changed, 57 insertions, 26 deletions
diff --git a/nxcomp/src/ChannelEndPoint.cpp b/nxcomp/src/ChannelEndPoint.cpp
index 4fdf0fad4..fb8549f6a 100644
--- a/nxcomp/src/ChannelEndPoint.cpp
+++ b/nxcomp/src/ChannelEndPoint.cpp
@@ -37,6 +37,8 @@
#include "NXalert.h"
+#include "Misc.h"
+
ChannelEndPoint::ChannelEndPoint(const char *spec)
: defaultTCPPort_(0), defaultTCPInterface_(0),
defaultUnixPath_(NULL), spec_(NULL) {
@@ -54,11 +56,14 @@ ChannelEndPoint::~ChannelEndPoint()
if(S_ISSOCK(st.st_mode))
unlink(unixPath);
}
+ SAFE_FREE(unixPath);
+ SAFE_FREE(defaultUnixPath_);
+ SAFE_FREE(spec_);
}
void
ChannelEndPoint::setSpec(const char *spec) {
- if (spec_) free(spec_);
+ SAFE_FREE(spec_);
if (spec && strlen(spec))
{
@@ -90,10 +95,11 @@ void
ChannelEndPoint::setSpec(const char *hostName, long port) {
int length;
- if (spec_) free(spec_);
isUnix_ = false;
isTCP_ = false;
+ SAFE_FREE(spec_);
+
if (hostName && strlen(hostName) && port >= 1)
{
length = snprintf(NULL, 0, "tcp:%s:%ld", hostName, port);
@@ -137,9 +143,9 @@ ChannelEndPoint::getSpec(char **socketUri) const {
*socketUri = strdup(newSocketUri);
}
- free(newSocketUri);
- free(unixPath);
- free(hostName);
+ SAFE_FREE(newSocketUri);
+ SAFE_FREE(unixPath);
+ SAFE_FREE(hostName);
if (NULL != *socketUri)
return true;
@@ -160,7 +166,7 @@ ChannelEndPoint::setDefaultTCPInterface(int publicInterface) {
void
ChannelEndPoint::setDefaultUnixPath(char *path) {
- if (defaultUnixPath_) free(defaultUnixPath_);
+ SAFE_FREE(defaultUnixPath_);
if (path && strlen(path))
defaultUnixPath_ = strdup(path);
@@ -193,7 +199,7 @@ ChannelEndPoint::getPort(long *port) const {
bool
ChannelEndPoint::getUnixPath(char **unixPath) const {
- if (unixPath) *unixPath = 0;
+ if (unixPath) *unixPath = NULL;
long p;
char *path = NULL;
@@ -329,10 +335,10 @@ ChannelEndPoint &ChannelEndPoint::operator=(const ChannelEndPoint &other) {
defaultTCPInterface_ = other.defaultTCPInterface_;
old = defaultUnixPath_;
defaultUnixPath_ = (other.defaultUnixPath_ ? strdup(other.defaultUnixPath_) : NULL);
- free(old);
+ SAFE_FREE(old);
old = spec_;
spec_ = (other.spec_ ? strdup(other.spec_) : NULL);
- free(old);
+ SAFE_FREE(old);
isUnix_ = getUnixPath();
isTCP_ = getTCPHostAndPort();
return *this;
@@ -344,7 +350,7 @@ std::ostream& operator<<(std::ostream& os, const ChannelEndPoint& endPoint) {
if (endPoint.getSpec(&endPointSpec))
{
os << endPointSpec;
- free(endPointSpec);
+ SAFE_FREE(endPointSpec);
}
else
os << "(invalid)";
diff --git a/nxcomp/src/Log.h b/nxcomp/src/Log.h
index aed929b31..3e355a951 100644
--- a/nxcomp/src/Log.h
+++ b/nxcomp/src/Log.h
@@ -168,7 +168,13 @@ class NXLog
delete pdt->thread_name;
while (!pdt->buffer.empty()) {
+ /*
+ * get the stringstream object created in new_stack_entry()
+ * from the stack and delete it after pop()
+ */
+ std::stringstream* tmp = pdt->buffer.top();
(void) pdt->buffer.pop ();
+ delete tmp;
}
delete pdt;
@@ -240,7 +246,12 @@ class NXLog
pthread_sigmask(SIG_BLOCK, &tmp_signal_mask, &orig_signal_mask);
if (!pdt->buffer.empty ()) {
- const std::string str = pdt->buffer.top()->str();
+ /*
+ * get the stringstream object created in new_stack_entry()
+ * from the stack and delete it after pop()
+ */
+ std::stringstream *tmp = pdt->buffer.top();
+ const std::string str = tmp->str();
if (!str.empty())
{
@@ -251,6 +262,9 @@ class NXLog
/* Remove from stack. */
pdt->buffer.pop();
+
+ /* free memory */
+ delete tmp;
}
/* Restore old signal mask. */
diff --git a/nxcomp/src/Loop.cpp b/nxcomp/src/Loop.cpp
index b51d7e7e3..baad17699 100644
--- a/nxcomp/src/Loop.cpp
+++ b/nxcomp/src/Loop.cpp
@@ -3187,8 +3187,7 @@ int SetupProxyConnection()
nxinfo << "Loop: listenSocket is "<< ( listenSocket.enabled() ? "enabled" : "disabled") << ". "
<< "The socket URI is '"<< ( socketUri != NULL ? socketUri : "<unset>") << "'.\n" << std::flush;
- free(socketUri);
- socketUri = NULL;
+ SAFE_FREE(socketUri);
if (WE_INITIATE_CONNECTION)
{
@@ -3196,7 +3195,7 @@ int SetupProxyConnection()
{
nxinfo << "Loop: Going to connect to '" << socketUri
<< "'.\n" << std::flush;
- free(socketUri);
+ SAFE_FREE(socketUri);
proxyFD = ConnectToRemote(connectSocket);
@@ -3219,7 +3218,7 @@ int SetupProxyConnection()
{
nxinfo << "Loop: Going to wait for connection at '"
<< socketUri << "'.\n" << std::flush;
- free(socketUri);
+ SAFE_FREE(socketUri);
proxyFD = WaitForRemote(listenSocket);
@@ -4278,15 +4277,18 @@ int ListenConnectionTCP(const char *host, long port, const char *label)
int ListenConnection(ChannelEndPoint &endpoint, const char *label)
{
- char *unixPath, *host;
+ char *unixPath = NULL, *host = NULL;
long port;
+ int result = -1;
if (endpoint.getUnixPath(&unixPath)) {
- return ListenConnectionUnix(unixPath, label);
+ result = ListenConnectionUnix(unixPath, label);
}
else if (endpoint.getTCPHostAndPort(&host, &port)) {
- return ListenConnectionTCP(host, port, label);
+ result = ListenConnectionTCP(host, port, label);
}
- return -1;
+ SAFE_FREE(unixPath);
+ SAFE_FREE(host);
+ return result;
}
static int AcceptConnection(int fd, int domain, const char *label)
@@ -6217,7 +6219,7 @@ int WaitForRemote(ChannelEndPoint &socketAddress)
cerr << "Info" << ": Waiting for connection from "
<< hostLabel << " on socket '" << socketUri
<< "'.\n";
- free(socketUri);
+ SAFE_FREE(socketUri);
//
// How many times to loop waiting for connections
@@ -6306,7 +6308,7 @@ int WaitForRemote(ChannelEndPoint &socketAddress)
cerr << "Info" << ": Accepted connection from this host on Unix file socket '"
<< unixPath << "'.\n";
- free(unixPath);
+ SAFE_FREE(unixPath);
break;
}
@@ -6739,10 +6741,16 @@ int ConnectToRemote(ChannelEndPoint &socketAddress)
}
}
+ SAFE_FREE(unixPath);
+ SAFE_FREE(hostName);
+
return pFD;
ConnectToRemoteError:
+ SAFE_FREE(unixPath);
+ SAFE_FREE(hostName);
+
if (pFD != -1)
{
close(pFD);
@@ -7938,7 +7946,7 @@ int ParseEnvironmentOptions(const char *env, int force)
cerr << "Error" << ": Refusing 'listen' parameter with 'connect' being '"
<< socketUri << "'.\n";
- free(socketUri);
+ SAFE_FREE(socketUri);
return -1;
}
@@ -7966,7 +7974,7 @@ int ParseEnvironmentOptions(const char *env, int force)
cerr << "Error" << ": Refusing 'accept' parameter with 'connect' being '"
<< socketUri << "'.\n";
- free(socketUri);
+ SAFE_FREE(socketUri);
return -1;
}
diff --git a/nxcomp/src/Misc.h b/nxcomp/src/Misc.h
index 997630137..7808c34c2 100644
--- a/nxcomp/src/Misc.h
+++ b/nxcomp/src/Misc.h
@@ -54,6 +54,9 @@ using namespace std;
#define EGET() (errno)
#define ESTR() strerror(errno)
+// a free() macro that clears the ptr after free
+#define SAFE_FREE(ptr) do { free(ptr); ptr = NULL; } while (0)
+
//
// TCP port offset applied to NX port specification.
//
diff --git a/nxcomp/src/Pipe.cpp b/nxcomp/src/Pipe.cpp
index 4fa149412..228c556ae 100644
--- a/nxcomp/src/Pipe.cpp
+++ b/nxcomp/src/Pipe.cpp
@@ -203,7 +203,7 @@ FILE *Popen(char * const parameters[], const char *type)
if (pipe(pdes) < 0)
{
- free(cur);
+ SAFE_FREE(cur);
return NULL;
}
@@ -237,7 +237,7 @@ FILE *Popen(char * const parameters[], const char *type)
close(pdes[0]);
close(pdes[1]);
- free(cur);
+ SAFE_FREE(cur);
return NULL;
}
@@ -420,7 +420,7 @@ int Pclose(FILE *iop)
last -> next = cur -> next;
}
- free(cur);
+ SAFE_FREE(cur);
//
// Child has finished and we called the
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 18:25:27 +0000