API: + file search

.clangd

@@ -0,0 +1,2 @@
+CompileFlags:
+  CompilationDatabase: build

src/CMakeLists.txt

@@ -2,6 +2,8 @@ add_executable(zbbs-server)
 
 set_property(TARGET zbbs-server PROPERTY C_STANDARD 23)
 
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
 find_package(PostgreSQL REQUIRED)
 if(NOT PostgreSQL_FOUND)
     message(FATAL_ERROR "PostgreSQL not found. Please install libpq-dev or set PostgreSQL_ROOT.")

src/client.c

@@ -12,15 +12,16 @@ void process_client_command(char *line, session *sess, server_data_t *s_d) {
   char arg_1[32];
   char arg_2[32];
   uint32_t res;
-  uint32_t limit, page;
+  i_file_list_t fl_args;
+  fl_args.name = NULL;
 
   sscanf(line, "%s %s", arg_1, arg_2);
 
   if (!strcmp(arg_1, "file")) {
     /* LIST */
     if (!strcmp(arg_2, "list")) {
-      sscanf(line, "%*s %*s %u %u", &limit, &page);
-      file_list(sess, s_d, limit, page);
+      sscanf(line, "%*s %*s %u %u", &(fl_args.limit), &(fl_args.page));
+      file_list(sess, s_d, &fl_args);
       return;
     }
 
@@ -39,6 +40,20 @@ void process_client_command(char *line, session *sess, server_data_t *s_d) {
         sess->state = OP_DOWNLOAD;
       return;
     }
+
+    /* SEARCH */
+    if (!strcmp(arg_2, "search")) {
+      char *s_type = arg_1; /* since we don't need the contents of arg_1 and arg_2 variables */
+      char *s_val = arg_2;
+      sscanf(line, "%*s %*s %s %s %u %u", s_type, s_val, &(fl_args.limit), &(fl_args.page));
+      
+      /* by name */
+      if (!strcmp(s_type, "name")) {
+        fl_args.name = s_val;
+      }
+
+      file_list(sess, s_d, &fl_args);
+    }
   }
 
   if (!strncmp(line, "exit", sizeof "exit")) {

src/db.c

@@ -5,6 +5,7 @@
 #include <libpq-fe.h>
 #include <netinet/in.h>
 #include <openssl/sha.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -126,7 +127,7 @@ int32_t db_user_auth(i_auth_t *c, o_auth_t *r) {
     return exit_query(1);
 
   const char *pass = PQgetvalue(res, 0, 2);
-  string_to_SHA256( c->pass, passHashed);
+  string_to_SHA256(c->pass, passHashed);
   if (pass == NULL) {
     /* TODO: return */
   }
@@ -276,13 +277,15 @@ uint64_t db_get_files_data(i_get_files_db *arg, fl_t **fl_start,
   char query[512];
   char sort_by[16] = "id";
   char sort_dir[5] = "ASC";
-  const char *paramValues[2];
-  int paramLengths[2];
-  int paramFormats[2];
+  const char *paramValues[3];
+  int paramLengths[3];
+  int paramFormats[3];
   int i;
   uint64_t count;
   uint64_t n_limit = htobe64(arg->limit);
   uint64_t n_offset = htobe64(arg->offset);
+  bool by_name = strlen(arg->name) > 0;
+  uint32_t params_num = 3;
 
   switch (arg->sort_by) {
   case NAME:
@@ -305,21 +308,35 @@ uint64_t db_get_files_data(i_get_files_db *arg, fl_t **fl_start,
 
   paramValues[0] = (char *)&n_limit;
   paramValues[1] = (char *)&n_offset;
+  paramValues[2] = arg->name;
 
   paramLengths[0] = sizeof(n_limit);
   paramLengths[1] = sizeof(n_offset);
+  paramLengths[2] = strlen(arg->name);
 
   paramFormats[0] = BIN;
   paramFormats[1] = BIN;
+  paramFormats[2] = TEXT;
 
+  if (!by_name) {
+    params_num = 2;
     sprintf(query,
             "SELECT files.id, user_id, name, size, description, permissions, "
             "hash, username "
             "FROM files JOIN users ON user_id = users.id "
             "ORDER BY files.%s %s LIMIT $1 OFFSET $2",
             sort_by, sort_dir);
+  } else {
+    sprintf(query,
+            "SELECT files.id, user_id, name, size, description, permissions, "
+            "hash, username "
+            "FROM files JOIN users ON user_id = users.id "
+            "WHERE name ILIKE '%%' || $3 || '%%'"
+            "ORDER BY files.%s %s LIMIT $1 OFFSET $2",
+            sort_by, sort_dir);
+  }
 
-  res = PQexecParams(conn, query, 2, NULL, paramValues, paramLengths,
+  res = PQexecParams(conn, query, params_num, NULL, paramValues, paramLengths,
                      paramFormats, TEXT);
 
   if (PQresultStatus(res) != PGRES_TUPLES_OK && !PQntuples(res))
@@ -355,8 +372,17 @@ uint64_t db_get_files_data(i_get_files_db *arg, fl_t **fl_start,
 
   clearRes();
 
+  if (by_name) {
+    res = PQexecParams(conn,
+                       "SELECT COUNT(id) "
+                       "FROM files "
+                       "WHERE name ILIKE '%%' || $1 || '%%'",
+                       1, NULL, paramValues + 2, paramLengths + 2,
+                       paramFormats + 2, TEXT);
+  } else {
     res = PQexec(conn, "SELECT COUNT(id) "
                        "FROM files ");
+  }
 
   if (PQresultStatus(res) != PGRES_TUPLES_OK && !PQntuples(res))
     return exit_query_2(0);

src/file_p.c

@@ -1,11 +1,11 @@
 #include "file_p.h"
 #include "db.h"
-#include <murmur3.h>
 #include "main.h"
 #include "session.h"
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <murmur3.h>
 #include <netinet/in.h>
 #include <stddef.h>
 #include <stdint.h>
@@ -39,7 +39,7 @@ void clear_list(fl_t *start) {
   }
 }
 
-void file_list(session *sess, server_data_t *s_d, uint32_t limit, uint32_t page) {
+void file_list(session *sess, server_data_t *s_d, i_file_list_t *f_args) {
   fl_t *fl_start, *fl_current;
   char item_h[256];
   i_get_files_db args;
@@ -54,25 +54,32 @@ void file_list(session *sess, server_data_t *s_d, uint32_t limit, uint32_t page)
     sess->fl_current = NULL;
   }
 
-  args.limit = limit;
-  args.offset = limit * (page - 1);
+  args.limit = f_args->limit;
+  args.offset = f_args->limit * (f_args->page - 1);
   args.sort_by = ID;
   args.sort_direction = ASC;
+  if (f_args->name != NULL) {
+    strcpy(args.name, f_args->name);
+  } else {
+    args.name[0] = '\0';
+  }
 
   count = db_get_files_data(&args, &fl_start, &full_count);
   char page_info[256];
 
-  pages_count = full_count / limit;
+  pages_count = full_count / f_args->limit;
   if (!pages_count)
     pages_count = 1;
-  if (pages_count % limit)
+  if (pages_count % f_args->limit)
     pages_count++;
 
-  sprintf(page_info, ":END: PAGE %u/%lu COUNT: %lu/%lu\n", page, pages_count,
-          count, full_count - (page - 1) * limit);
+  sprintf(page_info, ":END: PAGE %u/%lu COUNT: %lu/%lu\n", f_args->page,
+          pages_count, count, full_count - (f_args->page - 1) * f_args->limit);
 
-  if (!fl_start)
+  if (!fl_start) {
+    write(sess->sd, page_info, strlen(page_info));
     return;
+  }
 
   fl_current = fl_start;
 

src/file_p.h

@@ -1,8 +1,14 @@
 #ifndef FILEP_H
 #define FILEP_H
 #include "main.h"
+#include <stdint.h>
 void clear_list(fl_t *start);
-void file_list(session *, server_data_t *, uint32_t limit, uint32_t page);
+typedef struct {
+    uint32_t page;
+    uint32_t limit;
+    char *name;
+} i_file_list_t;
+void file_list(session *, server_data_t *, i_file_list_t *l_args);
 int file_send_prepare(session *, char *, server_data_t *);
 enum f_actions {
     F_UPLOAD,