/*
 * nghttp2 - HTTP/2 C Library
 *
 * Copyright (c) 2013 Tatsuhiro Tsujikawa
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include "util_test.h"

#include <cstring>
#include <iostream>

#include <CUnit/CUnit.h>

#include <nghttp2/nghttp2.h>

#include "util.h"

using namespace nghttp2;

namespace shrpx {

void test_util_streq(void) {
  CU_ASSERT(util::streq("alpha", (const uint8_t *)"alpha", 5));
  CU_ASSERT(util::streq("alpha", (const uint8_t *)"alphabravo", 5));
  CU_ASSERT(!util::streq("alpha", (const uint8_t *)"alphabravo", 6));
  CU_ASSERT(!util::streq("alphabravo", (const uint8_t *)"alpha", 5));
  CU_ASSERT(!util::streq("alpha", (const uint8_t *)"alphA", 5));
  CU_ASSERT(!util::streq("", (const uint8_t *)"a", 1));
  CU_ASSERT(util::streq("", (const uint8_t *)"", 0));
  CU_ASSERT(!util::streq("alpha", (const uint8_t *)"", 0));

  CU_ASSERT(
      util::streq((const uint8_t *)"alpha", 5, (const uint8_t *)"alpha", 5));
  CU_ASSERT(
      !util::streq((const uint8_t *)"alpha", 4, (const uint8_t *)"alpha", 5));
  CU_ASSERT(
      !util::streq((const uint8_t *)"alpha", 5, (const uint8_t *)"alpha", 4));
  CU_ASSERT(
      !util::streq((const uint8_t *)"alpha", 5, (const uint8_t *)"alphA", 5));
  char *a = nullptr;
  char *b = nullptr;
  CU_ASSERT(util::streq(a, 0, b, 0));
}

void test_util_strieq(void) {
  CU_ASSERT(util::strieq(std::string("alpha"), std::string("alpha")));
  CU_ASSERT(util::strieq(std::string("alpha"), std::string("AlPhA")));
  CU_ASSERT(util::strieq(std::string(), std::string()));
  CU_ASSERT(!util::strieq(std::string("alpha"), std::string("AlPhA ")));
  CU_ASSERT(!util::strieq(std::string(), std::string("AlPhA ")));
}

void test_util_inp_strlower(void) {
  std::string a("alPha");
  util::inp_strlower(a);
  CU_ASSERT("alpha" == a);

  a = "ALPHA123BRAVO";
  util::inp_strlower(a);
  CU_ASSERT("alpha123bravo" == a);

  a = "";
  util::inp_strlower(a);
  CU_ASSERT("" == a);
}

void test_util_to_base64(void) {
  std::string x = "AAA--B_";
  util::to_base64(x);
  CU_ASSERT("AAA++B/=" == x);

  x = "AAA--B_B";
  util::to_base64(x);
  CU_ASSERT("AAA++B/B" == x);
}

void test_util_percent_encode_token(void) {
  CU_ASSERT("h2" == util::percent_encode_token("h2"));
  CU_ASSERT("h3~" == util::percent_encode_token("h3~"));
  CU_ASSERT("100%25" == util::percent_encode_token("100%"));
  CU_ASSERT("http%202" == util::percent_encode_token("http 2"));
}

void test_util_quote_string(void) {
  CU_ASSERT("alpha" == util::quote_string("alpha"));
  CU_ASSERT("" == util::quote_string(""));
  CU_ASSERT("\\\"alpha\\\"" == util::quote_string("\"alpha\""));
}

void test_util_utox(void) {
  CU_ASSERT("0" == util::utox(0));
  CU_ASSERT("1" == util::utox(1));
  CU_ASSERT("F" == util::utox(15));
  CU_ASSERT("10" == util::utox(16));
  CU_ASSERT("3B9ACA07" == util::utox(1000000007));
  CU_ASSERT("100000000" == util::utox(1LL << 32));
}

void test_util_http_date(void) {
  CU_ASSERT("Thu, 01 Jan 1970 00:00:00 GMT" == util::http_date(0));
  CU_ASSERT("Wed, 29 Feb 2012 09:15:16 GMT" == util::http_date(1330506916));
}

void test_util_select_h2(void) {
  const unsigned char *out = NULL;
  unsigned char outlen = 0;

  // Check single entry and select it.
  const unsigned char t1[] = "\x5h2-14";
  CU_ASSERT(util::select_h2(&out, &outlen, t1, sizeof(t1) - 1));
  CU_ASSERT(
      memcmp(NGHTTP2_PROTO_VERSION_ID, out, NGHTTP2_PROTO_VERSION_ID_LEN) == 0);
  CU_ASSERT(NGHTTP2_PROTO_VERSION_ID_LEN == outlen);

  out = NULL;
  outlen = 0;

  // Check the case where id is correct but length is invalid and too
  // long.
  const unsigned char t2[] = "\x6h2-14";
  CU_ASSERT(!util::select_h2(&out, &outlen, t2, sizeof(t2) - 1));

  // Check the case where h2-14 is located after bogus ID.
  const unsigned char t3[] = "\x2h3\x5h2-14";
  CU_ASSERT(util::select_h2(&out, &outlen, t3, sizeof(t3) - 1));
  CU_ASSERT(
      memcmp(NGHTTP2_PROTO_VERSION_ID, out, NGHTTP2_PROTO_VERSION_ID_LEN) == 0);
  CU_ASSERT(NGHTTP2_PROTO_VERSION_ID_LEN == outlen);

  out = NULL;
  outlen = 0;

  // Check the case that last entry's length is invalid and too long.
  const unsigned char t4[] = "\x2h3\x6h2-14";
  CU_ASSERT(!util::select_h2(&out, &outlen, t4, sizeof(t4) - 1));

  // Check the case that all entries are not supported.
  const unsigned char t5[] = "\x2h3\x2h4";
  CU_ASSERT(!util::select_h2(&out, &outlen, t5, sizeof(t5) - 1));

  // Check the case where 2 values are eligible, but last one is
  // picked up because it has precedence over the other.
  const unsigned char t6[] = "\x5h2-14\x5h2-16";
  CU_ASSERT(util::select_h2(&out, &outlen, t6, sizeof(t6) - 1));
  CU_ASSERT(memcmp(NGHTTP2_H2_PROTO_ALIAS, out, NGHTTP2_H2_PROTO_ALIAS_LEN) ==
            0);
  CU_ASSERT(NGHTTP2_H2_PROTO_ALIAS_LEN == outlen);
}

void test_util_ipv6_numeric_addr(void) {
  CU_ASSERT(util::ipv6_numeric_addr("::1"));
  CU_ASSERT(util::ipv6_numeric_addr("2001:0db8:85a3:0042:1000:8a2e:0370:7334"));
  // IPv4
  CU_ASSERT(!util::ipv6_numeric_addr("127.0.0.1"));
  // not numeric address
  CU_ASSERT(!util::ipv6_numeric_addr("localhost"));
}

void test_util_utos_with_unit(void) {
  CU_ASSERT("0" == util::utos_with_unit(0));
  CU_ASSERT("1023" == util::utos_with_unit(1023));
  CU_ASSERT("1K" == util::utos_with_unit(1024));
  CU_ASSERT("1K" == util::utos_with_unit(1025));
  CU_ASSERT("1M" == util::utos_with_unit(1 << 20));
  CU_ASSERT("1G" == util::utos_with_unit(1 << 30));
  CU_ASSERT("1024G" == util::utos_with_unit(1LL << 40));
}

void test_util_parse_uint_with_unit(void) {
  CU_ASSERT(0 == util::parse_uint_with_unit("0"));
  CU_ASSERT(1023 == util::parse_uint_with_unit("1023"));
  CU_ASSERT(1024 == util::parse_uint_with_unit("1k"));
  CU_ASSERT(2048 == util::parse_uint_with_unit("2K"));
  CU_ASSERT(1 << 20 == util::parse_uint_with_unit("1m"));
  CU_ASSERT(1 << 21 == util::parse_uint_with_unit("2M"));
  CU_ASSERT(1 << 30 == util::parse_uint_with_unit("1g"));
  CU_ASSERT(1LL << 31 == util::parse_uint_with_unit("2G"));
  CU_ASSERT(9223372036854775807LL ==
            util::parse_uint_with_unit("9223372036854775807"));
  // check overflow case
  CU_ASSERT(-1 == util::parse_uint_with_unit("9223372036854775808"));
  CU_ASSERT(-1 == util::parse_uint_with_unit("10000000000000000000"));
  CU_ASSERT(-1 == util::parse_uint_with_unit("9223372036854775807G"));
  // bad characters
  CU_ASSERT(-1 == util::parse_uint_with_unit("1.1"));
  CU_ASSERT(-1 == util::parse_uint_with_unit("1a"));
  CU_ASSERT(-1 == util::parse_uint_with_unit("a1"));
  CU_ASSERT(-1 == util::parse_uint_with_unit("1T"));
  CU_ASSERT(-1 == util::parse_uint_with_unit(""));
}

void test_util_parse_uint(void) {
  CU_ASSERT(0 == util::parse_uint("0"));
  CU_ASSERT(1023 == util::parse_uint("1023"));
  CU_ASSERT(-1 == util::parse_uint("1k"));
  CU_ASSERT(9223372036854775807LL == util::parse_uint("9223372036854775807"));
  // check overflow case
  CU_ASSERT(-1 == util::parse_uint("9223372036854775808"));
  CU_ASSERT(-1 == util::parse_uint("10000000000000000000"));
  // bad characters
  CU_ASSERT(-1 == util::parse_uint("1.1"));
  CU_ASSERT(-1 == util::parse_uint("1a"));
  CU_ASSERT(-1 == util::parse_uint("a1"));
  CU_ASSERT(-1 == util::parse_uint("1T"));
  CU_ASSERT(-1 == util::parse_uint(""));
}

} // namespace shrpx