File indexing completed on 2024-05-19 04:58:31

 /* ============================================================
 * Falkon - Qt web browser
 * Copyright (C) 2010-2017 David Rosca <nowrep@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ============================================================ */
 #include "processinfo.h"
 
 #if defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
 #include <sys/stat.h>
 #include <dirent.h>
 #include <unistd.h>
 
 #include <iostream>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
 #include <cstdarg>
 #endif
 
 ProcessInfo::ProcessInfo(const QString &name)
     : m_name(name)
 {
 }
 
 bool ProcessInfo::isRunning() const
 {
 #if defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
     pid_t pid = GetPIDbyName(qPrintable(m_name));
     // -1 = process not found
     // -2 = /proc fs access error
     return (pid != -1 && pid != -2);
 #else
     return false;
 #endif
 }
 
 #if defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
 bool ProcessInfo::IsNumeric(const char* ccharptr_CharacterList) const
 {
     for (; *ccharptr_CharacterList; ccharptr_CharacterList++) {
         if (*ccharptr_CharacterList < '0' || *ccharptr_CharacterList > '9') {
             return false;
         }
     }
 
     return true;
 }
 
 pid_t ProcessInfo::GetPIDbyName(const char* cchrptr_ProcessName) const
 {
     char chrarry_CommandLinePath[260]  ;
     char chrarry_NameOfProcess[300]  ;
     char* chrptr_StringToCompare = NULL ;
     pid_t pid_ProcessIdentifier = (pid_t) - 1 ;
     struct dirent* de_DirEntity = NULL ;
     DIR* dir_proc = NULL ;
 
     dir_proc = opendir("/proc/") ;
     if (dir_proc == NULL) {
         perror("Couldn't open the /proc/ directory") ;
         return (pid_t) - 2 ;
     }
 
     // Loop while not NULL
     while ((de_DirEntity = readdir(dir_proc))) {
 #ifndef __HAIKU__
         if (de_DirEntity->d_type == DT_DIR) {
             if (IsNumeric(de_DirEntity->d_name)) {
                 strcpy(chrarry_CommandLinePath, "/proc/") ;
                 strcat(chrarry_CommandLinePath, de_DirEntity->d_name) ;
                 strcat(chrarry_CommandLinePath, "/cmdline") ;
                 FILE* fd_CmdLineFile = fopen(chrarry_CommandLinePath, "rt") ;   // open the file for reading text
                 if (fd_CmdLineFile) {
                     int r = fscanf(fd_CmdLineFile, "%20s", chrarry_NameOfProcess) ; // read from /proc/<NR>/cmdline
 
                     fclose(fd_CmdLineFile);  // close the file prior to exiting the routine
 
                     if (r < 1) {
                         continue;
                     }
 
                     if (strrchr(chrarry_NameOfProcess, '/')) {
                         chrptr_StringToCompare = strrchr(chrarry_NameOfProcess, '/') + 1 ;
                     }
                     else {
                         chrptr_StringToCompare = chrarry_NameOfProcess ;
                     }
 
                     //printf("Process name: %s\n", chrarry_NameOfProcess);
                     //printf("Pure Process name: %s\n", chrptr_StringToCompare );
 
                     if (!strcmp(chrptr_StringToCompare, cchrptr_ProcessName)) {
                         pid_ProcessIdentifier = (pid_t) atoi(de_DirEntity->d_name) ;
                         closedir(dir_proc) ;
                         return pid_ProcessIdentifier ;
                     }
                 }
             }
         }
 #endif
     }
 
     closedir(dir_proc) ;
     return pid_ProcessIdentifier ;
 }
 
 #endif