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-rw-r--r--nxcomp/src/ChannelEndPoint.cpp30
-rw-r--r--nxcomp/src/Loop.cpp33
-rw-r--r--nxcomp/src/Misc.h3
-rw-r--r--nxcomp/src/Pipe.cpp6
4 files changed, 33 insertions, 39 deletions
diff --git a/nxcomp/src/ChannelEndPoint.cpp b/nxcomp/src/ChannelEndPoint.cpp
index 843bf2b35..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) {
@@ -54,17 +56,14 @@ ChannelEndPoint::~ChannelEndPoint()
if(S_ISSOCK(st.st_mode))
unlink(unixPath);
}
- free(unixPath);
- unixPath = NULL;
- free(defaultUnixPath_);
- defaultUnixPath_ = NULL;
- free(spec_);
- spec_ = NULL;
+ SAFE_FREE(unixPath);
+ SAFE_FREE(defaultUnixPath_);
+ SAFE_FREE(spec_);
}
void
ChannelEndPoint::setSpec(const char *spec) {
- free(spec_);
+ SAFE_FREE(spec_);
if (spec && strlen(spec))
{
@@ -99,8 +98,7 @@ ChannelEndPoint::setSpec(const char *hostName, long port) {
isUnix_ = false;
isTCP_ = false;
- free(spec_);
- spec_ = NULL;
+ SAFE_FREE(spec_);
if (hostName && strlen(hostName) && port >= 1)
{
@@ -145,9 +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;
@@ -168,7 +166,7 @@ ChannelEndPoint::setDefaultTCPInterface(int publicInterface) {
void
ChannelEndPoint::setDefaultUnixPath(char *path) {
- free(defaultUnixPath_);
+ SAFE_FREE(defaultUnixPath_);
if (path && strlen(path))
defaultUnixPath_ = strdup(path);
@@ -337,10 +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;
@@ -352,7 +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/Loop.cpp b/nxcomp/src/Loop.cpp
index ca9e5ed08..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);
@@ -4287,10 +4286,8 @@ int ListenConnection(ChannelEndPoint &endpoint, const char *label)
else if (endpoint.getTCPHostAndPort(&host, &port)) {
result = ListenConnectionTCP(host, port, label);
}
- free(unixPath);
- unixPath = NULL;
- free(host);
- host = NULL;
+ SAFE_FREE(unixPath);
+ SAFE_FREE(host);
return result;
}
@@ -6222,7 +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
@@ -6311,7 +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;
}
@@ -6744,19 +6741,15 @@ int ConnectToRemote(ChannelEndPoint &socketAddress)
}
}
- free(unixPath);
- unixPath = NULL;
- free(hostName);
- hostName = NULL;
+ SAFE_FREE(unixPath);
+ SAFE_FREE(hostName);
return pFD;
ConnectToRemoteError:
- free(unixPath);
- unixPath = NULL;
- free(hostName);
- hostName = NULL;
+ SAFE_FREE(unixPath);
+ SAFE_FREE(hostName);
if (pFD != -1)
{
@@ -7953,7 +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;
}
@@ -7981,7 +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 2024-12-04 10:27:42 +0000