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-rw-r--r--nxcomp/Pipe.cpp429
1 files changed, 0 insertions, 429 deletions
diff --git a/nxcomp/Pipe.cpp b/nxcomp/Pipe.cpp
deleted file mode 100644
index 88f10edb4..000000000
--- a/nxcomp/Pipe.cpp
+++ /dev/null
@@ -1,429 +0,0 @@
-/**************************************************************************/
-/* */
-/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
-/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
-/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
-/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
-/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
-/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
-/* */
-/* NXCOMP, NX protocol compression and NX extensions to this software */
-/* are copyright of the aforementioned persons and companies. */
-/* */
-/* Redistribution and use of the present software is allowed according */
-/* to terms specified in the file LICENSE.nxcomp which comes in the */
-/* source distribution. */
-/* */
-/* All rights reserved. */
-/* */
-/* NOTE: This software has received contributions from various other */
-/* contributors, only the core maintainers and supporters are listed as */
-/* copyright holders. Please contact us, if you feel you should be listed */
-/* as copyright holder, as well. */
-/* */
-/**************************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <pwd.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <grp.h>
-
-#include "Pipe.h"
-#include "Misc.h"
-#include "Fork.h"
-
-//
-// Set the verbosity level.
-//
-
-#define PANIC
-#define WARNING
-#undef TEST
-#undef DEBUG
-
-extern void RegisterChild(int child);
-
-static int Psplit(const char *command, char *parameters[], int limit);
-
-//
-// These are slightly modified versions of popen(3) and pclose(3)
-// that don't rely on a shell to be available on the system, so
-// that they can also work on Windows. As an additional benefit,
-// these functions give up all privileges before running the com-
-// mand. Code is taken from the X distribution and, in turn, is
-// based on libc from FreeBSD 2.2.
-//
-
-static struct pid
-{
- struct pid *next;
- FILE *fp;
- int self;
-
-} *pidlist;
-
-//
-// A very unsofisticated attempt to parse the command line and
-// split each parameter in distinct strings. This is not going
-// to work when dealing with parameters containing spaces, even
-// if they are enclosed in quotes.
-//
-
-int Psplit(const char *command, char *parameters[], int limit)
-{
- char *line;
- char *value;
-
- int number;
-
- //
- // Preapare the list of parameters.
- //
-
- for (number = 0; number < limit; number++)
- {
- parameters[number] = NULL;
- }
-
- //
- // Copy the command to get rid of the
- // const qualifier.
- //
-
- line = new char[strlen(command) + 1];
-
- if (line == NULL)
- {
- goto PsplitError;
- }
-
- strcpy(line, command);
-
- number = 0;
-
- value = strtok(line, " ");
-
- while (value != NULL && number < limit)
- {
- #ifdef DEBUG
- *logofs << "Psplit: Got parameter '" << value
- << "'.\n" << logofs_flush;
- #endif
-
- parameters[number] = new char[strlen(value) + 1];
-
- if (parameters[number] == NULL)
- {
- goto PsplitError;
- }
-
- strcpy(parameters[number], value);
-
- number++;
-
- //
- // If this is the first parameter, then
- // copy it in the second position and
- // use it as the name of the command.
- //
-
- if (number == 1)
- {
- parameters[number] = new char[strlen(value) + 1];
-
- if (parameters[number] == NULL)
- {
- goto PsplitError;
- }
-
- strcpy(parameters[number], value);
-
- number++;
- }
-
- value = strtok(NULL, " ");
- }
-
- //
- // Needs at least to have the command itself and
- // the first argument, being again the name of
- // the command.
- //
-
- if (number < 2)
- {
- goto PsplitError;
- }
-
- return number;
-
-PsplitError:
-
- #ifdef PANIC
- *logofs << "Psplit: PANIC! Can't split command line '"
- << command << "'.\n" << logofs_flush;
- #endif
-
- cerr << "Error" << ": Can't split command line '"
- << command << "'.\n";
-
- delete [] line;
-
- return -1;
-}
-
-FILE *Popen(char * const parameters[], const char *type)
-{
- FILE *iop;
-
- struct pid *cur;
- int pdes[2], pid;
-
- if (parameters == NULL || type == NULL)
- {
- return NULL;
- }
-
- if ((*type != 'r' && *type != 'w') || type[1])
- {
- return NULL;
- }
-
- if ((cur = (struct pid *) malloc(sizeof(struct pid))) == NULL)
- {
- return NULL;
- }
-
- if (pipe(pdes) < 0)
- {
- free(cur);
-
- return NULL;
- }
-
- //
- // Block all signals until command is exited.
- // We need to gather information about the
- // child in Pclose().
- //
-
- DisableSignals();
-
- switch (pid = Fork())
- {
- case -1:
- {
- //
- // Error.
- //
-
- #ifdef PANIC
- *logofs << "Popen: PANIC! Function fork failed. "
- << "Error is " << EGET() << " '" << ESTR()
- << "'.\n" << logofs_flush;
- #endif
-
- cerr << "Error" << ": Function fork failed. "
- << "Error is " << EGET() << " '" << ESTR()
- << "'.\n";
-
- close(pdes[0]);
- close(pdes[1]);
-
- free(cur);
-
- return NULL;
- }
- case 0:
- {
- //
- // Child.
- //
-
- struct passwd *pwent = getpwuid(getuid());
- if (pwent) initgroups(pwent->pw_name,getgid());
- if (setgid(getgid()) == -1)
- {
- _exit(127);
- }
- if (setuid(getuid()) == -1)
- {
- _exit(127);
- }
-
- if (*type == 'r')
- {
- if (pdes[1] != 1)
- {
- //
- // Set up stdout.
- //
-
- dup2(pdes[1], 1);
- close(pdes[1]);
- }
-
- close(pdes[0]);
- }
- else
- {
- if (pdes[0] != 0)
- {
- //
- // Set up stdin.
- //
-
- dup2(pdes[0], 0);
- close(pdes[0]);
- }
-
- close(pdes[1]);
- }
-
- execvp(parameters[0], parameters + 1);
-
- exit(127);
- }
- }
-
- //
- // Parent. Save data about the child.
- //
-
- RegisterChild(pid);
-
- if (*type == 'r')
- {
- iop = fdopen(pdes[0], type);
-
- close(pdes[1]);
- }
- else
- {
- iop = fdopen(pdes[1], type);
-
- close(pdes[0]);
- }
-
- cur -> fp = iop;
- cur -> self = pid;
- cur -> next = pidlist;
-
- pidlist = cur;
-
- #ifdef TEST
- *logofs << "Popen: Executing ";
-
- for (int i = 0; i < 256 && parameters[i] != NULL; i++)
- {
- *logofs << "[" << parameters[i] << "]";
- }
-
- *logofs << " with descriptor " << fileno(iop)
- << ".\n" << logofs_flush;
- #endif
-
- return iop;
-}
-
-FILE *Popen(const char *command, const char *type)
-{
- char *parameters[256];
-
- if (Psplit(command, parameters, 256) > 0)
- {
- FILE *file = Popen(parameters, type);
-
- for (int i = 0; i < 256; i++)
- {
- delete [] parameters[i];
- }
-
- return file;
- }
- else
- {
- #ifdef PANIC
- *logofs << "Popen: PANIC! Failed to parse command '"
- << command << "'.\n" << logofs_flush;
- #endif
-
- cerr << "Error" << ": Failed to parse command '"
- << command << "'.\n";
-
- return NULL;
- }
-}
-
-int Pclose(FILE *iop)
-{
- struct pid *cur, *last;
-
- int pstat;
- int pid;
-
- #ifdef TEST
- *logofs << "Pclose: Closing command with output "
- << "on descriptor " << fileno(iop) << ".\n"
- << logofs_flush;
- #endif
-
- fclose((FILE *) iop);
-
- for (last = NULL, cur = pidlist; cur; last = cur, cur = cur -> next)
- {
- if (cur -> fp == iop)
- {
- break;
- }
- }
-
- if (cur == NULL)
- {
- #ifdef PANIC
- *logofs << "Pclose: PANIC! Failed to find the process "
- << "for descriptor " << fileno(iop) << ".\n"
- << logofs_flush;
- #endif
-
- cerr << "Error" << ": Failed to find the process "
- << "for descriptor " << fileno(iop) << ".\n";
-
- return -1;
- }
-
- do
- {
- #ifdef TEST
- *logofs << "Pclose: Going to wait for process "
- << "with pid '" << cur -> self << "'.\n"
- << logofs_flush;
- #endif
-
- pid = waitpid(cur -> self, &pstat, 0);
- }
- while (pid == -1 && errno == EINTR);
-
- if (last == NULL)
- {
- pidlist = cur -> next;
- }
- else
- {
- last -> next = cur -> next;
- }
-
- free(cur);
-
- //
- // Child has finished and we called the
- // waitpid(). We can enable signals again.
- //
-
- EnableSignals();
-
- return (pid == -1 ? -1 : pstat);
-}
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