From 73902dc1b3dad91f98b785f5a742e4e44c7e7d73 Mon Sep 17 00:00:00 2001
From: "@syxhe" <https://t.me/syxhe>
Date: Sun, 28 Dec 2025 01:00:13 -0600
Subject: Make some progress on cryptscan impl

---
 src/encryption.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

diff --git a/src/encryption.c b/src/encryption.c
index e304e6e..9df5206 100644
--- a/src/encryption.c
+++ b/src/encryption.c
@@ -322,8 +322,8 @@ CLEANUP_encryptviatmp:
 int decryptto(const char * const target, const char * const output, const unsigned char key[crypto_secretstream_xchacha20poly1305_KEYBYTES]) {
     if(!target || !output || !key) ERRRET(EINVAL, -1);
 
-    FILE *src, *dst;
-    int fdst, eflag = -1, res = -1;
+    FILE *src = NULL, *dst = NULL;
+    int fdst = -1, eflag = -1, res = -1;
 
     // Open the source file
     if(!(src = fopen(target, "rb"))) {eflag = 0; goto CLEANUP_decryptto;}
@@ -450,16 +450,74 @@ static int _cryptscan__selector(const struct dirent *de) {
     if(!de) return 0;
 
     for(int i = 0; i < STATIC_ARRAY_LEN(EXCLUDED_ENTRIES); i++) {
-        if(strncmp(de->d_name, EXCLUDED_ENTRIES[i], sizeof(de->d_name)) == 0)
+        // Would use strncmp here but d_name doesn't have a fixed size and is supposedly guaranteed to have a null terminator so it shouldn't be a big deal
+        if(strcmp(de->d_name, EXCLUDED_ENTRIES[i]) == 0)
             return 0;
     }
 
     return 1;
 }
 
+/// helper function to deduplicate code for dealing with scandir
+int _cryptscan__process_scandir(const char * const folder, taskqueue *toscan, ctqueue *tocrypt) {
+    if(!folder || !toscan || !tocrypt) return -1;
+
+    struct dirent **namelist = NULL;
+    int entries = scandir(folder, &namelist, _cryptscan__selector, alphasort);
+    if(!toscan || !tocrypt || entries < 0) goto _cryptscan__process_scandir_ERR;
+
+    for(int i = 0; i < entries; i++) {
+        switch(namelist[i]->d_type) {
+            // Try to stat the file if it's unknown
+            case DT_UNKNOWN:
+            break;
+
+            // Add it to the ctq
+            case DT_REG:
+            break;
+
+            // Add it to the scanlist
+            case DT_DIR:
+            break;
+
+            // Ignore or spit out a warning
+            default:
+            break;
+        }
+    }
+
+_cryptscan__process_scandir_ERR:
+
+    return -1;
+}
+
+// Going to implement this using a taskqueue. Each folder is added as a task to scan, with each file then added to a ctq for later. Scanning will be done linearly
+// for my sake, and because I do not care to do generics in C beyond what is absolutely necessary (aka I don't want to implement a hashmap/hashset to make parallel
+// execution efficient)
+
 ctqueue * cryptscan(int threads, const char * const start) {
     if(!start || threads < 1) return NULL;
 
+    taskqueue *toscan = taskqueue_new();
+    ctqueue *tocrypt = ctqueue_init(threads);
+
+    // Initialize the lists
+    if(_cryptscan__process_scandir(start, toscan, tocrypt) < 1) goto cryptscan_ERR;
+
+
+    taskqueue_free(toscan);
+    return tocrypt;
+
+cryptscan_ERR:
+    taskqueue_free(toscan);
+    ctqueue_free(tocrypt);
+
+    // for(int i = 0; i < entries; i++) {
+    //     free(namelist[i]);
+    // }
+    // free(namelist);
+
+    return NULL;
 }
 
 #endif
\ No newline at end of file
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