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Diff for /OpenXM/src/kxx/oxmain.c between version 1.3 and 1.25

version 1.3, 1999/11/04 02:12:31 version 1.25, 2006/06/05 04:40:15
Line 1 
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 /*  $OpenXM: OpenXM/src/kxx/oxmain.c,v 1.2 1999/10/30 02:24:27 takayama Exp $  */  /*  $OpenXM: OpenXM/src/kxx/oxmain.c,v 1.24 2006/06/05 00:25:50 takayama Exp $  */
   /*  Note on IntelMac. [2006.06.05]
       SIGINT does not seem to be blocked on the rosetta emulator of ppc
       on the IntelMac's. "ox" should be universal binary.
      A dirty hack to generate a universal binary of ox is as follows.
      (1) Add -arch ppc -arch i386 to CFLAGS in src/kxx/Makefile
          and src/kan96xx/plugin/Makefile
      (2) Build ox
   */
 /* nullserver01 */  /* nullserver01 */
 #include <stdio.h>  #include <stdio.h>
   #include <fcntl.h>
   #include <unistd.h>
 #include <sys/types.h>  #include <sys/types.h>
 #include <sys/socket.h>  #include <sys/socket.h>
 #include <sys/time.h>  #include <sys/time.h>
   #include <sys/resource.h>
 #include <netinet/in.h>  #include <netinet/in.h>
 #include <netdb.h>  #include <netdb.h>
 #include <signal.h>  #include <signal.h>
 #include <setjmp.h>  #include <setjmp.h>
   #include <stdlib.h>
 /* -lnsl -lsocket /usr/ucblib/libucb.a */  /* -lnsl -lsocket /usr/ucblib/libucb.a */
 #include "ox_kan.h"  #include "ox_kan.h"
 #include "serversm.h"  #include "serversm.h"
   
 #define SERVERNAME "/usr/local/OpenXM/bin/ox_sm1"  #define SERVERNAME "ox_sm1"
   
   extern char **environ;
 int OxCritical = 0;  int OxCritical = 0;
 int OxInterruptFlag = 0;  int OxInterruptFlag = 0;
   int OxTerminateMode = 0;
   
 int SerialCurrentControl;  int SerialCurrentControl;
   
 int MyServerPid;  int MyServerPid;
 char ServerName[1024];  #define SERVERNAME_SIZE 4096
   char ServerName[SERVERNAME_SIZE];
 int PacketMonitor = 0;  int PacketMonitor = 0;
 int Quiet = 0;  int Quiet = 0;
   
 int LocalMode = 1;  int LocalMode = 1;
 int NotifyPortnumber = 0;  int NotifyPortnumber = 0;
   int Do_not_use_control_stream_to_tell_no_server = 1;
   int IgnoreSIGINT = 1;
   static void errorToStartEngine(void);
   static int findOxServer(char *server);
   static void couldNotFind(char *s);
   /*  gcc -v -c hoge.c */
   static void mywait();
   
   void *sGC_malloc(int n) {
     return (void *)malloc(n);
   }
   
 main(int argc, char *argv[]) {  main(int argc, char *argv[]) {
   int fd;    int fd;
Line 40  main(int argc, char *argv[]) {
Line 65  main(int argc, char *argv[]) {
   int reverse = 0;    int reverse = 0;
   extern int OpenedSocket;    extern int OpenedSocket;
   char portfile[1024];    char portfile[1024];
   char *pass;    char *pass = NULL;
     char *passControl = NULL;
     char *passData = NULL;
     int result;
     int sleepingTime = 0;
     int authEncoding=0;
     FILE *fp;
     char *stmp;
     extern int OxTerminateMode;
   
     signal(SIGHUP,SIG_IGN);  /* ignore x of xterm */
   strcpy(sname,"localhost");    strcpy(sname,"localhost");
   strcpy(ServerName,SERVERNAME);    strcpy(ServerName,SERVERNAME);
   i = 1;    i = 1;
   if (argc == 1) {    if (argc == 1) {
     oxmainUsage();      oxmainUsage();
     exit();      exit(10);
   }    }
   while (i<argc) {    while (i<argc) {
     if (strcmp(argv[i],"-host") == 0) {      if (strcmp(argv[i],"-host") == 0) {
Line 68  main(int argc, char *argv[]) {
Line 102  main(int argc, char *argv[]) {
       LocalMode = 0;        LocalMode = 0;
     }else if (strcmp(argv[i],"-reverse") == 0) {      }else if (strcmp(argv[i],"-reverse") == 0) {
       reverse = 1;        reverse = 1;
       }else if (strcmp(argv[i],"-finish") == 0) {
         OxTerminateMode = 1;
     }else if (strcmp(argv[i],"-portfile") == 0) {      }else if (strcmp(argv[i],"-portfile") == 0) {
       i++;        i++;
       if (i<argc) {        if (i<argc) {
         sscanf(argv[i],"%s",portfile);          sscanf(argv[i],"%s",portfile);
         portControl = 0;          portControl = 0;
         portStream = 0;          portStream = 0;
         NotifyPortnumber = 1;          NotifyPortnumber = 1;
       }        }
     }else if (strcmp(argv[i],"-pass") == 0) {      }else if (strcmp(argv[i],"-pass") == 0) {
       i++;        i++;
       if (i<argc) {        if (i<argc) {
         pass = argv[i];          pass = argv[i];
       }        }
       }else if (strcmp(argv[i],"-passData") == 0) {
         i++;
         if (i<argc) {
           passData = argv[i];
         }
       }else if (strcmp(argv[i],"-passControl") == 0) {
         i++;
         if (i<argc) {
           passControl = argv[i];
         }
       }else if (strcmp(argv[i],"-wait") == 0) {
         i++;
         if (i<argc) {
           sscanf(argv[i],"%d",&sleepingTime);
         }
       }else if (strcmp(argv[i],"-authEncoding") == 0) {
         i++;
         if (strcmp(argv[i],"file") == 0) {
           authEncoding = 1;
         }else{
           fprintf(stderr,"Unknown -authEncoding %s.\n",argv[i]);
           oxmainUsage(); exit(10);
         }
       }else if (strcmp(argv[i],"-ignoreSIGINT") == 0) {
         i++;
         if (i<argc) {
           sscanf(argv[i],"%d",&IgnoreSIGINT);
         }
     }else {      }else {
       fprintf(stderr,"Unknown option %s.\n",argv[i]);        fprintf(stderr,"Unknown option %s.\n",argv[i]);
       oxmainUsage(); exit(10);        oxmainUsage(); exit(10);
Line 88  main(int argc, char *argv[]) {
Line 152  main(int argc, char *argv[]) {
     i++;      i++;
   }    }
   
     if (Do_not_use_control_stream_to_tell_no_server) {
       if (findOxServer(ServerName) < 0) {
         fprintf(stderr,"Sleeping five seconds...\n");
         sleep(5);
         exit(-1);
       }
     }
   
     if (sleepingTime) {
       fprintf(stderr,"Waiting to connect for %d seconds...\n",sleepingTime);
       sleep(sleepingTime);
       fprintf(stderr,"\nTrying to connect\n");
     }
   
     if ((pass != NULL) && (passData == NULL)) {
           passData = pass;
     }
     if ((pass != NULL) && (passControl == NULL)) {
       passControl = pass;
     }
   
     /* Decrypt passControl and passData, here. Lookup cryptmethod. */
     if (authEncoding == 1) {
           stmp = (char *)sGC_malloc(strlen(getenv("HOME"))+strlen(passControl)+
                                                             strlen(passData)+128);
           sprintf(stmp,"%s/.openxm/tmp.opt/%s",(char *)getenv("HOME"),passControl);
           fp = fopen(stmp,"r");
           if (fp == NULL) { fprintf(stderr,"passControl file %s is not found.\n",stmp); exit(1);}
           fgets(stmp,127,fp); passControl = stmp; fclose(fp);
   
           stmp = (char *)sGC_malloc(strlen(getenv("HOME"))+strlen(passControl)+
                                                             strlen(passData)+128);
           sprintf(stmp,"%s/.openxm/tmp.opt/%s",(char *)getenv("HOME"),passData);
           fp = fopen(stmp,"r");
           if (fp == NULL) { fprintf(stderr,"passData file %s is not found.\n",stmp); exit(1);}
           fgets(stmp,127,fp); passData = stmp; fclose(fp);
     }
   
   if (reverse) {    if (reverse) {
     /* The order is very important. */      /* The order is very important. */
     fdControl = socketConnectWithPass(sname,portControl,pass);      fdControl = socketConnectWithPass(sname,portControl,passControl);
     fdStream = socketConnectWithPass(sname,portStream,pass);      fdStream = socketConnectWithPass(sname,portStream,passData);
   
     fprintf(stderr,"Connected: control = %d, data = %d.\n",fdControl,fdStream);      fprintf(stderr,"Connected: control = %d, data = %d.\n",fdControl,fdStream);
       result = 0;
   
   
       if ((fdControl < 0) ||  (fdStream < 0)) {
         fprintf(stderr,"Waiting for 10 seconds to show an error.\n");
         sleep(10);
       }
   
     if (portControl != -1) {      if (portControl != -1) {
       MyServerPid = fork();        MyServerPid = fork();
       if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);        if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
       else childServerMain(fdControl,fdStream);        else result=childServerMain(fdControl,fdStream);
     }else{      }else{
       childServerMain(fdControl,fdStream);        result=childServerMain(fdControl,fdStream);
     }      }
     /* This line will be never executed. */      /* This line will be never executed in case of success */
       if (result < 0 ) {
         errorToStartEngine();
       }
   }    }
   
   /* non-reverse case. */    /* non-reverse case. */
Line 116  main(int argc, char *argv[]) {
Line 229  main(int argc, char *argv[]) {
       fdControl = socketOpen(sname,portControl);        fdControl = socketOpen(sname,portControl);
       portControl = OpenedSocket;        portControl = OpenedSocket;
       if (NotifyPortnumber) {        if (NotifyPortnumber) {
         oxWritePortFile(0,portControl,portfile);          oxWritePortFile(0,portControl,portfile);
       }        }
       fdControl = socketAcceptLocal(fdControl);        fdControl = socketAcceptLocal(fdControl);
       fprintf(stderr,"\n control port %d : Connected.\n",portControl);        fprintf(stderr,"\n control port %d : Connected.\n",portControl);
Line 125  main(int argc, char *argv[]) {
Line 238  main(int argc, char *argv[]) {
       fdStream = socketOpen(sname,portStream);        fdStream = socketOpen(sname,portStream);
       portStream = OpenedSocket;        portStream = OpenedSocket;
       if (NotifyPortnumber) {        if (NotifyPortnumber) {
         oxWritePortFile(1,portStream,portfile);          oxWritePortFile(1,portStream,portfile);
       }        }
       fdStream = socketAcceptLocal(fdStream);        fdStream = socketAcceptLocal(fdStream);
       fprintf(stderr,"\n stream port %d : Connected.\n",portStream);        fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
Line 135  main(int argc, char *argv[]) {
Line 248  main(int argc, char *argv[]) {
       fdControl = socketOpen(sname,portControl);        fdControl = socketOpen(sname,portControl);
       portControl = OpenedSocket;        portControl = OpenedSocket;
       if (NotifyPortnumber) {        if (NotifyPortnumber) {
         oxWritePortFile(0,portControl,portfile);          oxWritePortFile(0,portControl,portfile);
       }        }
       fdControl = socketAccept(fdControl);        fdControl = socketAccept(fdControl);
       fprintf(stderr,"\n control port %d : Connected.\n",portControl);        fprintf(stderr,"\n control port %d : Connected.\n",portControl);
Line 144  main(int argc, char *argv[]) {
Line 257  main(int argc, char *argv[]) {
       fdStream = socketOpen(sname,portStream);        fdStream = socketOpen(sname,portStream);
       portStream = OpenedSocket;        portStream = OpenedSocket;
       if (NotifyPortnumber) {        if (NotifyPortnumber) {
         oxWritePortFile(1,portStream,portfile);          oxWritePortFile(1,portStream,portfile);
       }        }
       fdStream = socketAccept(fdStream);        fdStream = socketAccept(fdStream);
       fprintf(stderr,"\n stream port %d : Connected.\n",portStream);        fprintf(stderr,"\n stream port %d : Connected.\n",portStream);
     }      }
   }    }
   
     if (passControl != NULL) {
           char *s; int mm;
           fprintf(stderr,"passControl\n");
           mm = strlen(passControl);
           s = (char *) malloc(mm+1);
       if (s == NULL) {fprintf(stderr,"No more memory.\n"); exit(1); }
           if (read(fdControl,s,mm+1) < 0) {
             fprintf(stderr,"Read error to read passControl\n"); sleep(5); exit(1);
           }
       s[mm] = 0;
           if (strcmp(s,passControl) != 0) {
             fprintf(stderr,"s=%s and passControl=%s  do not match.\n",s,passControl); sleep(5); exit(1);
           }
           free(s);
     }
     if (passData != NULL) {
           char *s; int mm;
           mm = strlen(passData);
           fprintf(stderr,"passData\n");
           s = (char *) malloc(mm+1);
       if (s == NULL) {fprintf(stderr,"No more memory.\n"); exit(1); }
           if (read(fdStream,s,mm+1) < 0) {
             fprintf(stderr,"Read error to read passData\n");
             errorToStartEngine();
           }
           if (strcmp(s,passData) != 0) {
             fprintf(stderr,"s=%s and passData=%s  do not match.\n",s,passData);
             errorToStartEngine();
           }
       free(s);
     }
   
     if ((fdControl < 0) ||  (fdStream < 0)) {
       fprintf(stderr,"Waiting for 10 seconds to show an error.\n");
       sleep(10);
     }
   
   
     result = 0;
   if (portControl != -1) {    if (portControl != -1) {
     MyServerPid = fork();      MyServerPid = fork();
     if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);      if (MyServerPid > 0 ) parentServerMain(fdControl,fdStream);
     else childServerMain(fdControl,fdStream);      else result = childServerMain(fdControl,fdStream);
   }else{    }else{
     childServerMain(fdControl,fdStream);      result = childServerMain(fdControl,fdStream);
   }    }
     if (result < 0) errorToStartEngine();
   }
   
   static void errorToStartEngine(void) {
     fprintf(stderr,"Failed to start the engine. Childing process is terminating.\n");
     /* You have to tell to the control server that there is no engine.
        And, the control server must tell the client that there is no
        engine.
        This part has not yet been implemented.
        If you implement this, set Do_not_use_control_stream_to_tell_no_server to
        zero.
     */
     sleep(10);
     exit(-1);
 }  }
   
 oxmainUsage() {  oxmainUsage() {
   fprintf(stderr,"Usage: \n");    fprintf(stderr,"Usage: \n");
   fprintf(stderr,"  ox [-ox serverprogram -host name -data portnum -control portnum -monitor]\n");    fprintf(stderr,"  ox [-ox serverprogram -host name -data portnum -control portnum -monitor]\n");
   fprintf(stderr," [-insecure -portfile fname -reverse -pass xxxyyyzzz]");    fprintf(stderr," [-insecure -portfile fname -reverse -passControl xxxyyyzzz -passData pppqqqrrr]");
     fprintf(stderr," [-finish]  [-wait seconds] [-authEncoding [file]]");
     fprintf(stderr," [-ignoreSIGINT [1|0]]");
   fprintf(stderr,"\n");    fprintf(stderr,"\n");
   fprintf(stderr,"-reverse: ox server connects to the client.\n");    fprintf(stderr,"-reverse: ox server connects to the client.\n");
   fprintf(stderr,"          The client must give a one time password to ox server to connect to the client with -pass option.\n");    fprintf(stderr,"          The client must give a one time password to ox server to connect to the client with -pass* option.\n");
   fprintf(stderr,"          The one time password can be seen by ps command, so you must not use this one time password system on an untrustful host.\n");    fprintf(stderr,"          The one time password can be seen by ps command, so you must not use this one time password system on an untrustful host.\n");
   fprintf(stderr,"          The one time password should be sent by a safe communication line like ssh and the ox server should be started by ssh. Do not use rsh\n");    fprintf(stderr,"          The one time password should be sent by a safe communication line like ssh and the ox server should be started by ssh. Do not use rsh\n");
     fprintf(stderr,"          (The option -pass is obsolete.)\n");
   fprintf(stderr,"          If -reverse is not given, the client connect to the ox server\n");    fprintf(stderr,"          If -reverse is not given, the client connect to the ox server\n");
   fprintf(stderr,"          See OpenXM/src/SSkan/Doc/ox.sm1, /sm1connectr\n");    fprintf(stderr,"          See OpenXM/src/SSkan/Doc/ox.sm1, /sm1connectr\n");
   fprintf(stderr,"-insecure : \n");    fprintf(stderr,"-insecure : \n");
   fprintf(stderr,"          If you access to the server from a localhost, you do not need one time password. However, if you access outside of the localhost, a one time password is required. To turn off this restriction, -insecure option is used.\n");    fprintf(stderr,"          If you access to the server from a localhost, you do not need one time password. However, if you access outside of the localhost, a one time password is required. To turn off this restriction, -insecure option is used.\n");
     fprintf(stderr,"\n");
     fprintf(stderr,"If ox fails to find the serverprogram, it tries to look for it in /usr/local/OpenXM/bin and $OpenXM_HOME/bin.\n");
     fprintf(stderr,"\n");
   fprintf(stderr,"Example 1:\n");    fprintf(stderr,"Example 1:\n");
   fprintf(stderr,"(Start the ox server): dc1%% ox -ox ~/OpenXM/bin/ox_sm1 -host dc1.math.kobe-u.ac.jp -insecure -control 1200 -data 1300\n");    fprintf(stderr,"(Start the ox server): dc1%% ox -ox ~/OpenXM/bin/ox_sm1 -host dc1.math.kobe-u.ac.jp -insecure -control 1200 -data 1300\n");
   fprintf(stderr,"(client):  sm1\n ");    fprintf(stderr,"(client):  sm1\n ");
Line 197  parentServerMain(int fdControl, int fdStream) {
Line 366  parentServerMain(int fdControl, int fdStream) {
   int r;    int r;
   int message = 1;    int message = 1;
   int controlByteOrder;    int controlByteOrder;
     extern OxTerminateMode;
   extern void myServerExit();    extern void myServerExit();
   
   controlByteOrder = oxTellMyByteOrder(fdControl);    signal(SIGCHLD,mywait);
     if (OxTerminateMode) {
           /*
             OxTerminateMode cannot be used if you run ox by xterm -exec ox ...
            */
           if (fork()) {
             close(fdControl); close(fdStream);
             /* Parent */
             exit(0);  /*Tell the caller that launching is successfully finished.*/
           }
     }
   
     controlByteOrder = oxTellMyByteOrder(fdControl,fdControl);
   /* Set the network byte order. */    /* Set the network byte order. */
   fprintf(stderr,"controlByteOrder=%x\n",controlByteOrder);    fprintf(stderr,"controlByteOrder=%x\n",controlByteOrder);
   
Line 225  parentServerMain(int fdControl, int fdStream) {
Line 406  parentServerMain(int fdControl, int fdStream) {
       r=kill(MyServerPid,SIGUSR1);        r=kill(MyServerPid,SIGUSR1);
       if (message) printf("Result = %d\n",r);        if (message) printf("Result = %d\n",r);
       fflush(NULL);        fflush(NULL);
       oxSendResultOfControlInt32(fdControl,0);        /*      oxSendResultOfControlInt32(fdControl,0); */
       break;        break;
     default:      default:
       fprintf(stderr,"[control] Unknown control message.\n");        fprintf(stderr,"[control] Unknown control message.\n");
Line 239  parentServerMain(int fdControl, int fdStream) {
Line 420  parentServerMain(int fdControl, int fdStream) {
 void myServerExit() {  void myServerExit() {
   printf("Sending the kill signal to the child.\n");    printf("Sending the kill signal to the child.\n");
   kill(MyServerPid,SIGKILL);    kill(MyServerPid,SIGKILL);
   exit();    exit(0);
 }  }
   
 childServerMain(int fdControl, int fdStream) {  childServerMain(int fdControl, int fdStream) {
   int i;    int i;
     struct rlimit res;
   close(fdControl);   /* close(0); dup(fdStream); */    close(fdControl);   /* close(0); dup(fdStream); */
   dup2(fdStream,3);    dup2(fdStream,3);
   dup2(fdStream,4);    dup2(fdStream,4);
 /*close(0);    /*close(0);
   #include <sys/param.h>      #include <sys/param.h>
   for (i=5; i<NOFILE; i++) close(i);      for (i=5; i<NOFILE; i++) close(i);
 */    */
     if (!Do_not_use_control_stream_to_tell_no_server) {
       if (findOxServer(ServerName) < 0) {
         return(-1);
       }
     }
     fprintf(stderr,"childServerMain: Starting the server %s\n",ServerName); fflush(NULL);
   
     /*
     {
           int i;
           i=0;
           while (environ[i] != NULL) {
             fprintf(stderr,"%s ",environ[i++]);
           }
           fprintf(stderr,"\n");
     }
     */
     /* bug: xterm of potato does not seem to pass the LD_LIBRARY_PATH.
         So, the new gc does not work.
        it is an workaround for OpenXM */
     if (getenv("LD_LIBRARY_PATH") == (char *)NULL) {
           char *s,*o;
       fprintf(stderr,"Hmm... LD_LIBRARY_PATH does not seem to be set.\n");
       o = getenv("OpenXM_HOME");
           if (o == NULL) {
             fprintf(stderr,"Giving up to set the LD_LIBRARY_PATH variable.\n");
           }else{
             s = (char *)malloc(strlen(o)+64);
             sprintf(s,"LD_LIBRARY_PATH=%s/lib",o);
             putenv(s);
           }
     }
     getrlimit(RLIMIT_STACK,&res);
     if (res.rlim_cur < 65536000) {
       fprintf(stderr,"RLIMIT_STACK is increased to 65Mbytes by setrlimit.\n");
           res.rlim_cur = 65536000;
           setrlimit(RLIMIT_STACK,&res);
     }
   
     if (IgnoreSIGINT) { signal(SIGINT, SIG_IGN); fprintf(stderr,"SIGING\n");}
   
   if (PacketMonitor) {    if (PacketMonitor) {
     if (execl(ServerName,ServerName,"-monitor",NULL)) {      if (execle(ServerName,ServerName,"-monitor",NULL,environ)) {
       fprintf(stderr,"%s cannot be executed with -monitor.\n",ServerName);        fprintf(stderr,"%s cannot be executed with -monitor.\n",ServerName);
         fflush(NULL);
         return(-1);
     }      }
   }else {    }else {
     if (execl(ServerName,ServerName,NULL)) {      if (execle(ServerName,ServerName,NULL,environ)) {
       fprintf(stderr,"%s cannot be executed.\n",ServerName);        fprintf(stderr,"%s cannot be executed.\n",ServerName);
         fflush(NULL);
         return(-1);
     }      }
   }    }
     /* never reached. */
 }  }
   
   
Line 267  childServerMain(int fdControl, int fdStream) {
Line 495  childServerMain(int fdControl, int fdStream) {
 unlockCtrlCForOx() { ; }  unlockCtrlCForOx() { ; }
 restoreLockCtrlCForOx() { ; }  restoreLockCtrlCForOx() { ; }
   
   static int findOxServer(char *server) {
     char *p;
     char *p2;
     if (strlen(server) == 0) return(-1);
     /* fd = open(server,O_RDONLY); */
     if (access(server,X_OK&R_OK) == 0) {
       fprintf(stderr,"Starting OX server : %s\n",server);
       return(0);
     }
     if (server[0] == '/') {
       couldNotFind(server);
       return(-1);
     }
     fprintf(stderr,"The server %s was not found. Trying to find it under OpenXM/bin\n",server);
     p = getenv("OpenXM_HOME");
     if (p == NULL) {
       p = "/usr/local/OpenXM";
     }
     p2 = (char *) malloc(sizeof(char)*(strlen(p)+strlen("/bin/")+3+strlen(server)));
     if (p2 == NULL) { fprintf(stderr,"No more memory.\n"); exit(10); }
     strcpy(p2,p); strcat(p2,"/bin/"); strcat(p2,server);
     /* fd = open(p2,O_RDONLY); */
     if (access(p2,X_OK&R_OK) == 0) {
       fprintf(stderr,"Starting OX server : %s\n",p2);
       if (strlen(p2) < SERVERNAME_SIZE) strcpy(server,p2);
       else {
         couldNotFind("Too long ox server name.");
         return(-1);
       }
       return(0);
     }
     couldNotFind(p2);
     return(-1);
   }
   
   static void couldNotFind(char *s) {
     fprintf(stderr,"OX server %s could not be found.\n",s);
   }
   
   
   static void mywait() {
     int status;
     int pid;
     int i,j;
     /* signal(SIGCHLD,SIG_IGN); */
     pid = wait(&status);
     fprintf(stderr,"Control: child process %d is exiting.\n",pid);
     fprintf(stderr,"Control: Shutting down the control server.\n");
     sleep(2);
     exit(0);
   }
   
   
Legend:
Removed from v.1.3  
changed lines
  Added in v.1.25
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