First Commit - Source Code from Reply

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/KeyUtil.c

@@ -0,0 +1,132 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <stdio.h>
+#include <string.h>
+
+#define SHMSZ     27
+#define KEY     5625
+#define PERM     0600
+
+
+void scrivi(void) {
+
+    int indirizzo = 0;
+	
+    char c;
+    int shmid;
+    key_t key;
+    char * shm, * s, * res;
+    char str[80];
+    int i;
+    
+    printf("Inserisci indirizzo.\n");
+    scanf("%d",&indirizzo);
+    printf("Indirizzo: %d \n",indirizzo);
+    
+    
+    //key = KEY;
+    key = (key_t)indirizzo;
+
+    /*
+     * Create the segment.
+     */
+    if ((shmid = shmget(key, SHMSZ, IPC_CREAT | PERM)) < 0) {
+      perror("shmget");
+      exit(1);
+    }
+
+    /*
+     * Now we attach the segment to our data space.
+     */
+    if ((shm = shmat(shmid, NULL, 0)) == (char * ) - 1) {
+      perror("shmat");
+      exit(1);
+    }
+    
+    res = getpass("password:");
+    
+    s = shm;
+    int j = strlen(res);
+    for (i = 0; i <= j; i++)
+      * s++ = * res++;
+    * s = NULL;
+    
+   printf("Scrittura terminata.\n");
+   
+   exit(0);
+  }
+
+void cancella(void) {
+	
+    int indirizzo = 0;
+    
+    int shmid;
+    key_t key;
+    char *shm, *s;
+    struct shmid_ds * shmid_ds;
+    int rtrn;
+    
+    printf("Inserisci indirizzo (x per usare il default).\n");
+    rtrn = scanf("%d",&indirizzo);
+    if(rtrn!=0) {
+    	printf("Indirizzo: %d \n",indirizzo);
+    	key = (key_t)indirizzo;
+    }
+    else {
+    	printf("Indirizzo: %d \n",KEY);
+    	key = KEY;
+    }
+
+    /*
+     * Locate the segment.
+     */
+    if ((shmid = shmget(key, SHMSZ, PERM)) < 0) {
+        perror("shmget");
+        exit(1);
+    }
+
+    /*
+     * Now we attach the segment to our data space.
+     */
+    if ((shm = shmat(shmid, NULL, 0)) == (char *) -1) {
+        perror("shmat");
+        exit(1);
+    }
+   
+    
+
+    if ((rtrn = shmctl(shmid, IPC_RMID, shmid_ds)) == -1) {
+      perror("shmctl");
+      exit(1);
+    }
+
+    printf("Dati cancellati.\n");
+    exit(0);
+
+}
+
+main(int argc, char * argv[]) {
+// int i;                                                      																																																				
+//                                                             																																																				
+// printf("argc = %d\n", argc);                                																																																				
+//                                                             																																																				
+// for (i = 0; i < argc; i++)                                  																																																				
+//   printf("argv[%d] = \"%s\"\n", i, argv[i]);                																																																				
+//                                                             																																																				
+// if ((argc!=2) ||                                            																																																				
+//     ((argc==2) && (argv[1][0]!='s') && (argv[1][0]!='c'))) {																																																				
+//   printf("Usage: shm_server [s|c]\n");                      																																																				
+// }                                                           																																																				
+// else {                                                      																																																				
+//   printf("1\n");                                            																																																				
+//    if (argv[1][0] == 's')                                   																																																				
+//        scrivi();                                            																																																				
+//    else {                                                   																																																				
+//     printf("2\n");                                          																																																				
+//      cancella();                                            																																																				
+//    }                                                        																																																				
+// }
+  cancella();
+}
+

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/compilazione.sh

@@ -0,0 +1,4 @@
+gcc -fPIC -o libSecUtility.so -shared -I/usr/java14/include -static-libgcc it_valueteam_securityutility_KeyJNIBridge.c
+
+
+

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/compilazione_pswd.sh

@@ -0,0 +1,4 @@
+gcc -o pswd.so pswd.c
+
+
+

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/it_valueteam_securityutility_KeyJNIBridge.c

@@ -0,0 +1,87 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <stdio.h>
+#include <jni.h>
+#include "it_valueteam_securityutility_KeyJNIBridge.h"
+
+#define SHMSZ     27
+//#define KEY     5678
+#define KEY     5650
+#define PERM     0600
+
+JNIEXPORT jbyteArray JNICALL Java_it_valueteam_securityutility_KeyJNIBridge_readKey
+  (JNIEnv * env, jobject obj, jint indirizzo){
+
+    int shmid;
+    int i = 0;
+    key_t key;
+    char *shm, *s;
+    jbyteArray result;
+    char buffer[24] = "12345123451234512345123";
+	 
+    //key = KEY;
+    key = (key_t)indirizzo;
+    
+    result = (*env)->NewByteArray(env,24);
+    if(result==NULL) {
+    	printf("Allocazione fallita.\n");
+    }
+
+    if ((shmid = shmget(key, SHMSZ, PERM)) < 0) {
+        perror("shmget");
+        return NULL;
+    }
+
+    if ((shm = shmat(shmid, NULL, 0)) == (char *) -1) {
+        perror("shmat");
+        return NULL;
+    }
+    
+    for(s = shm; i<24; s++) {
+    	buffer[i++] = *s;
+    }
+    
+    (*env)->SetByteArrayRegion(env,result,0,24,buffer);
+    return result;
+}
+
+JNIEXPORT void JNICALL Java_it_valueteam_securityutility_KeyJNIBridge_writeKey
+  (JNIEnv * env, jobject obj, jint indirizzo, jbyteArray chiave) {
+  	
+    int shmid;
+    key_t key;
+    char * shm, *s;
+    int i;
+    jbyte *start;
+    
+    //key = KEY;
+    key = (key_t)indirizzo;
+    
+    printf("Inizio scrittura.\n");
+
+    /*
+     * Create the segment.
+     */
+    if ((shmid = shmget(key, SHMSZ, IPC_CREAT | PERM)) < 0) {
+      perror("shmget");
+      exit(1);
+    }
+
+    /*
+     * Now we attach the segment to our data space.
+     */
+    if ((shm = shmat(shmid, NULL, 0)) == (char * ) - 1) {
+      perror("shmat");
+      exit(1);
+    }
+    
+    start = (*env)->GetByteArrayElements(env,chiave,NULL);
+    s = shm;
+    for(i=0;i<24;i++) {
+    	* s++ = start[i];
+    }
+    (*env)->ReleaseByteArrayElements(env, chiave, start, 0);
+    
+}
+

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/it_valueteam_securityutility_KeyJNIBridge.h

@@ -0,0 +1,29 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class itm_valueteam_securityutility_KeyJNIBridge */
+
+#ifndef _Included_it_valueteam_securityutility_KeyJNIBridge
+#define _Included_it_valueteam_securityutility_KeyJNIBridge
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     it_valueteam_securityutility_KeyJNIBridge
+ * Method:    readKey
+ * Signature: (I)[B
+ */
+JNIEXPORT jbyteArray JNICALL Java_it_valueteam_securityutility_KeyJNIBridge_readKey
+  (JNIEnv *, jobject, jint);
+
+/*
+ * Class:     it_valueteam_securityutility_KeyJNIBridge
+ * Method:    writeKey
+ * Signature: (I[B)V
+ */
+JNIEXPORT void JNICALL Java_it_valueteam_securityutility_KeyJNIBridge_writeKey
+  (JNIEnv *, jobject, jint, jbyteArray);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

dbcmnpsrc/FE/mnpdev/SecurityUtility/sorgenti_c/pswd.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <string.h>
+
+
+
+main(int argc, char * argv[]) {
+	char * res;
+	
+	res = getpass("Inserire valore: \n");
+	printf("%s",res);
+	
+}
+