api basic routes

src/utils.cpp

@@ -0,0 +1,60 @@
+#include <crypt.h>
+#include <stdexcept>
+#include "utils.hpp"
+#include <random>
+#include <sstream>
+#include <iomanip>
+#include <format>
+
+std::string hashing::GenerateSetting(unsigned long cost) {
+    // "$y$" is the yescrypt prefix
+    const char* setting = crypt_gensalt("$y$", cost, nullptr, 0);
+    if (!setting)
+        throw std::runtime_error("crypt_gensalt() failed - yescrypt may not be supported");
+    return setting;
+}
+
+std::string hashing::HashPassword(const std::string& password, const std::string& setting) {
+    crypt_data data{};
+    const char* hash = crypt_r(password.c_str(), setting.c_str(), &data);
+    if (!hash || hash[0] == '*')
+        throw std::runtime_error("crypt_r() failed");
+    return hash;
+}
+
+bool hashing::VerifyPassword(const std::string& password, const std::string& stored_hash) {
+    crypt_data data{};
+    const char* result = crypt_r(password.c_str(), stored_hash.c_str(), &data);
+    if (!result || result[0] == '*')
+        return false;
+    return stored_hash == result;
+}
+
+std::string hashing::generate_token(size_t bytes) {
+    std::random_device rd;
+    std::string token;
+    token.reserve(bytes * 2);
+
+    std::uniform_int_distribution<uint8_t> dist(0, 255);
+    for (size_t i = 0; i < bytes; ++i) {
+        std::ostringstream ss;
+        ss << std::hex << std::setw(2) << std::setfill('0') << (int)dist(rd);
+        token += ss.str();
+    }
+    return token;
+}
+
+timestamp::Timestamp timestamp::ParseTimestamp(const std::string& ts) {
+    std::tm tm = {};
+    std::istringstream ss(ts);
+    ss >> std::get_time(&tm, "%Y-%m-%d %H:%M:%S");
+    return std::chrono::system_clock::from_time_t(std::mktime(&tm));
+}
+
+timestamp::Timestamp timestamp::Now() {
+    return std::chrono::system_clock::now();
+}
+
+std::string timestamp::FormatTimestamp(const timestamp::Timestamp& ts) {
+    return std::format("{:%Y-%m-%d %H:%M:%S}", ts);
+}