Remove file when error while saving the data in DB

TODO.md

@@ -1,9 +1,5 @@
 ## Tasks
 
-# Testing
-
-- [ ] Tests for the server module
-
 # Development plans
 - [ ] make print_log to write a file log
 - [ ] Remove file when error while saving the data in DB
@@ -11,26 +7,10 @@
 - [ ] Unified list of exit codes
 
 ## Features
-
+- [ ] Sorting in the file list
-- [x] Database integration
-- [x] Paging in the file list
-- [x] Get files in FS by their hash
-- [x] Registration
-- [x] Encrypt passwords in DB
-- [x] Registration: Error when username or email is already used
 - [ ] Check correctness of email
 - [ ] Message to admin
-- [x] Advanced folder structure in the storage
 - [ ] File encryption
 - [ ] Connection encryption
 - [ ] Advanced rights for files
 - [ ] Multithreading
-
-## Done
-
-- [x] Switch to SQLite
-- [x] Close the DB correctly in any quit case (also by SIGTERM)
-- [x] Get rid of unsigned integers
-- [x] Check registration
-- [x] Auto create a database when one is missing
-- [x] Show date in server log

src/components/session/session.c

@@ -2,14 +2,12 @@
 /* Copyright (c) 2026 Oleksandr Zhylin */
 
 #include "session.h"
-#include <client.h>
-#include <file_p.h>
-#include <main.h>
-#include <user.h>
-#include <utils.h>
 #include <arpa/inet.h>
+#include <client.h>
 #include <db.h>
 #include <fcntl.h>
+#include <file_p.h>
+#include <main.h>
 #include <netinet/in.h>
 #include <stdarg.h>
 #include <stddef.h>
@@ -19,6 +17,8 @@
 #include <string.h>
 #include <sys/socket.h>
 #include <unistd.h>
+#include <user.h>
+#include <utils.h>
 
 session *make_new_session(int fd, struct sockaddr_in *from, char *wm);
 
@@ -206,14 +206,16 @@ void perform_session_action(session *sess, char *line, server_data_t *s_d) {
   case OP_UPLOAD_DESCRIPTION:
     res = file_upload_description(sess, line, s_d);
     if (res) {
-      if (db_save_file(sess)) {
+      if (db_save_file(sess->file, sess->uid)) {
         session_send_string(sess, "File \"%s\" is saved!\04\n",
                             sess->file->name);
+      } else {
+        session_send_string(sess, "Error while saving the file %s!\04\n",
+                            sess->file->name);
+        unlink(sess->file->path);
+      }
       clear_file_from_sess(sess);
       sess->state = OP_WAIT;
-      } else {
-        // TODO: error case
-      }
     }
     break;
   case OP_DOWNLOAD_WAIT_CONFIRM_PACKAGE:

src/db/db.h

@@ -47,7 +47,7 @@ typedef struct {
 enum db_cb_resp { db_no_result, db_success, db_err, db_fail }; /* fail: the problem is on the user's side; no error */
 
 int32_t init_db_connection();
-int32_t db_save_file(session *s);
+int32_t db_save_file(s_file_t *sfP, int uid);
 int32_t db_user_auth(i_auth_t *credentials, o_auth_t *response);
 s_file_t *db_get_file(i_get_file_db *arg);
 int32_t db_get_files_data(i_get_files_db *arg, fl_t **fl_start,

src/db/db_postgresql.c

@@ -3,9 +3,7 @@
 
 /* TODO: variadic function for preparing parameters */
 
-#include "../main.h"
+#include <main.h>
-#include "../utils.h"
-#include "db_common.h"
 #include <db.h>
 #include <endian.h>
 #include <fcntl.h>
@@ -18,6 +16,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include "utils.h"
+#include "db_common.h"
 
 #define UNUSED(x) (void)(x)
 #define Q_LEN 128
@@ -198,15 +198,14 @@ int32_t db_user_create(i_db_user_create *args) {
   return ret_value;
 }
 
-int32_t db_save_file(session *s) {
+int32_t db_save_file(s_file_t *sf, int uid) {
   const char *paramValues[6];
   int paramFormats[6];
   int paramLengths[6];
   /* int collision_id = 0; */
-  s_file_t *sf = s->file;
   char empty_str[] = "";
 
-  int32_t uid_n = htonl(s->uid);
+  int32_t uid_n = htonl(uid);
   size_t size_n = htobe64(sf->size);
   int32_t hash_n = htonl(sf->hash);
   int32_t perm_n = htonl(sf->permissions);

src/db/db_sqlite.c

@@ -3,7 +3,6 @@
 
 #include <main.h>
 #include <utils.h>
-#include "db_common.h"
 #include <db.h>
 #include <endian.h>
 #include <openssl/sha.h>
@@ -16,6 +15,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include "db_common.h"
 
 #define UNUSED(x) (void)(x)
 #define Q_LEN 128
@@ -284,8 +284,7 @@ enum db_cb_resp db_save_file_cb(sqlite3_stmt *stmt, void *resp) {
   return res;
 };
 
-int32_t db_save_file(session *s) {
+int32_t db_save_file(s_file_t *sfP, int uid) {
-  s_file_t *sfP = s->file;
   struct db_save_file_data resp_data = {.id = 0};
   const char empty_str[] = "";
   enum db_cb_resp res = db_no_result;
@@ -296,7 +295,7 @@ int32_t db_save_file(session *s) {
                  "hash, description, permissions) "
                  "VALUES ($1, $2, $3, date(), $4, $5, $6) "
                  "RETURNING id",
-                 db_save_file_cb, &resp_data, arg_types, s->uid, sfP->name,
+                 db_save_file_cb, &resp_data, arg_types, uid, sfP->name,
                  sfP->size, sfP->hash,
                  sfP->description != NULL ? sfP->description : empty_str,
                  sfP->permissions);