===================================================================
RCS file: /home/cvs/OpenXM/src/kan96xx/Kan/ext.c,v
retrieving revision 1.5
retrieving revision 1.13
diff -u -p -r1.5 -r1.13
--- OpenXM/src/kan96xx/Kan/ext.c	2001/05/04 01:06:23	1.5
+++ OpenXM/src/kan96xx/Kan/ext.c	2002/11/10 07:00:05	1.13
@@ -1,4 +1,4 @@
-/* $OpenXM: OpenXM/src/kan96xx/Kan/ext.c,v 1.4 2000/03/09 12:04:52 takayama Exp $ */
+/* $OpenXM: OpenXM/src/kan96xx/Kan/ext.c,v 1.12 2002/10/24 05:19:50 takayama Exp $ */
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -12,6 +12,7 @@
 #include "extern2.h"
 #include <signal.h>
 #include "plugin.h"
+#include <ctype.h>
 
 #define MYCP_SIZE 100
 static int Mychildren[MYCP_SIZE];
@@ -35,9 +36,14 @@ static void mywait() {
 }
 
 #define SIZE_OF_ENVSTACK 5
-static jmp_buf EnvStack[SIZE_OF_ENVSTACK];
+#if defined(__CYGWIN__)
+#define JMP_BUF sigjmp_buf
+#else
+#define JMP_BUF jmp_buf
+#endif
+static JMP_BUF EnvStack[SIZE_OF_ENVSTACK];
 static int Envp = 0;
-static void pushEnv(jmp_buf jb) {
+static void pushEnv(JMP_BUF jb) {
   if (Envp < SIZE_OF_ENVSTACK) {
     *(EnvStack[Envp]) = *jb;
     Envp++;
@@ -46,7 +52,7 @@ static void pushEnv(jmp_buf jb) {
     exit(2);
   }
 }
-static void popEnv(jmp_buf jbp) {
+static void popEnv(JMP_BUF jbp) {
   if (Envp <= 0) {
     fprintf(stderr,"Underflow of EnvStack.\n");
     exit(3);
@@ -81,12 +87,16 @@ struct object Kextension(struct object obj)
   struct object keyo;
   struct object rob = NullObject;
   struct object obj1,obj2,obj3,obj4;
-  int m,i;
+  int m,i,pid, uid;
   int argListc, fdListc;
   char *abc;
   char *abc2;
   extern struct context *CurrentContextp;
+#if (__CYGWIN__)
+  extern sigjmp_buf EnvOfStackMachine;
+#else
   extern jmp_buf EnvOfStackMachine;
+#endif
   extern void ctrlC();
   extern int SigIgn;
   extern errno;
@@ -152,7 +162,17 @@ struct object Kextension(struct object obj)
     obj1 = getoa(obj,1);
     if (obj1.tag != Sdollar) errorKan1("%s\n","[(getenv) envstr] extension");
     abc = getenv(KopString(obj1));
+#if defined(__CYGWIN__)
     if (abc == NULL) {
+	  abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(KopString(obj1))+2));
+      strcpy(abc2,KopString(obj1));
+	  for (i=0; i<strlen(abc2); i++) {
+		abc2[i] = toupper(abc2[i]);
+	  }
+      abc = getenv(abc2);
+    }
+#endif
+    if (abc == NULL) {
       rob = NullObject;
     }else{
       abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(abc)+2));
@@ -188,18 +208,22 @@ struct object Kextension(struct object obj)
     if (obj2.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array fdList.");
     obj3 = getoa(obj,3);
     if (obj3.tag != Sinteger) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. integer sigblock.");
-    m = KopInteger(obj3);  /* m == 1 : block ctrl-C. */
+    m = KopInteger(obj3);  /* m&1 : block ctrl-C. */
     argListc = getoaSize(obj1);
     fdListc =  getoaSize(obj2);
-    if ((m = fork()) > 0) {
+    if ((pid = fork()) > 0) {
       /* parent */
-      signal(SIGCHLD,mywait); /* to kill Zombie */
-      Mychildren[Mycp++] = m;
+      if (m&2) {
+         /* Do not call singal to turn around a trouble on cygwin. BUG. */
+      }else{
+         signal(SIGCHLD,mywait); /* to kill Zombie */
+      }
+      Mychildren[Mycp++] = pid;
       if (Mycp >= MYCP_SIZE-1) {
         errorKan1("%s\n","Child process table is full.\n");
         Mycp = 0;
       }
-      rob = KpoInteger(m);
+      rob = KpoInteger(pid);
       /* Done */
     }else{
       /* Child */
@@ -208,7 +232,7 @@ struct object Kextension(struct object obj)
         close(KopInteger(getoa(obj2,i)));
       }
       /* execl */
-      if (m == 1) {
+      if (m&1) {
         {
           sigset_t sss;
           sigemptyset(&sss);
@@ -225,6 +249,12 @@ struct object Kextension(struct object obj)
         argv[i] = KopString(getoa(obj1,i));
         argv[i+1] = NULL;
       }
+      
+      if (m&4) {
+	fprintf(stderr,"execv %s\n",argv[0]);
+	sleep(5);
+        fprintf(stderr,">>>\n");
+      }
       execv(argv[0],argv);
       /* This place will never be reached unless execv fails. */
       fprintf(stderr,"forkExec fails: ");
@@ -258,6 +288,18 @@ struct object Kextension(struct object obj)
   }else if (strcmp(key,"hilbert")==0) {
     if (size != 3) errorKan1("%s\n","[(hilbert) obgb obvlist] extension.");
     rob = hilberto(getoa(obj,1),getoa(obj,2));
+  }else if (strcmp(key,"nobody") == 0) {
+      uid = getuid();
+	  if (uid == 0) {
+#define NOBODY 65534
+		/* If I'm a super user, then change uid to nobody. */
+		if (setuid(NOBODY) != 0) {
+		  fprintf(stderr,"Failed to change uid to nobody (%d)\n",NOBODY);
+		  exit(10);
+		}
+		fprintf(stderr,"uid is changed to nobody (%d).\n",NOBODY);
+		rob.tag = Snull;
+	  }
   }else if (strcmp(key,"chattr")==0) {
     if (size != 3) errorKan1("%s\n","[(chattr)  num symbol] extension.");
     obj1 = getoa(obj,1);
@@ -269,6 +311,21 @@ struct object Kextension(struct object obj)
       errorKan1("%s\n","The number must be 0, 1 or 2.");
     putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,
                        m,CurrentContextp->userDictionary);
+  }else if (strcmp(key,"regionMatches")==0) {
+    if (size != 3) errorKan1("%s\n","[(regionMatches) str strArray] extension.");
+    obj1 = getoa(obj,1);
+    if (obj1.tag != Sdollar) errorKan1("%s\n","[(regionMatches) str strArray] extension. str must be a string.");
+	obj2 = getoa(obj,2);
+    if (obj2.tag != Sarray) errorKan1("%s\n","[(regionMatches) str strArray] extension. strArray must be an array.");
+    rob = KregionMatches(obj1,obj2);
+  }else if (strcmp(key,"ostype")==0) {
+    rob = newObjectArray(1);
+    /* Hard encode the OS type. */
+#if defined(__CYGWIN__)
+    putoa(rob,0,KpoString("windows"));
+#else
+    putoa(rob,0,KpoString("unix"));
+#endif
   }
 #include "plugin.hh"
   else{
@@ -277,5 +334,40 @@ struct object Kextension(struct object obj)
 
 
   return(rob);
+}
+
+struct object KregionMatches(struct object sobj, struct object keyArray)
+{
+  struct object rob;
+  int n,i,j,m,keyn;
+  char *s,*key;
+  rob = newObjectArray(3);
+  getoa(rob,0) = KpoInteger(-1);
+  getoa(rob,1) = NullObject;
+  getoa(rob,2) = NullObject;
+
+  if (sobj.tag != Sdollar) return rob;
+  if (keyArray.tag != Sarray) return rob;
+  n = getoaSize(keyArray);
+  for (i=0; i<n; i++) {
+	if (getoa(keyArray,i).tag != Sdollar) { return rob; }
+  }
+
+  s = KopString(sobj);
+  m = strlen(s);
+
+  for (i=0; i<n; i++) {
+	key = KopString(getoa(keyArray,i));
+	keyn = strlen(key);
+	for (j=0; j<m; j++) {
+	  if (strncmp(&(s[j]),key,keyn) == 0) {
+		getoa(rob,0) = KpoInteger(j);
+		getoa(rob,1) = KpoString(key);
+		getoa(rob,2) = KpoInteger(i);
+		return rob;
+	  }
+	}
+  }
+  return rob;
 }