jiazhizhong/higress
1
0
Fork 0
mirror of https://github.com/alibaba/higress.git synced 2026-05-10 13:57:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add plugins (#27)

Browse Source
This commit is contained in:
澄潭
2022-11-04 17:46:43 +08:00
committed by GitHub
parent 5ac966495c
commit 1a0ed73cd5
92 changed files with 35435 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
plugins/wasm-cpp/common/BUILD Normal file
View File

@@ -0,0 +1,131 @@
cc_library(
name = "common_util",
hdrs = [
"common_util.h",
],
visibility = ["//visibility:public"],
deps = [
"@com_google_absl//absl/strings",
],
)
cc_library(
name = "http_util",
srcs = ["http_util.cc"],
hdrs = [
"http_util.h",
],
visibility = ["//visibility:public"],
deps = [
":common_util",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/time",
"@com_google_absl//absl/strings:str_format",
"@proxy_wasm_cpp_sdk//:proxy_wasm_intrinsics",
],
)
cc_library(
name = "http_util_nullvm",
srcs = ["http_util.cc"],
hdrs = [
"http_util.h",
],
visibility = ["//visibility:public"],
copts = ["-DNULL_PLUGIN"],
deps = [
":common_util",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/time",
"@com_google_absl//absl/strings:str_format",
"@proxy_wasm_cpp_host//:lib",
],
)
cc_library(
name = "crypto_util",
srcs = [
"crypto_util.cc",
"crypt_blowfish.c",
"base64.h",
],
hdrs = [
"crypto_util.h",
],
visibility = ["//visibility:public"],
deps = [
":common_util",
":json_util",
"@com_google_absl//absl/strings",
"@boringssl//:ssl",
],
)
cc_library(
name = "rule_util",
hdrs = [
"route_rule_matcher.h",
],
visibility = ["//visibility:public"],
deps = [
":common_util",
":http_util",
],
)
cc_library(
name = "rule_util_nullvm",
hdrs = [
"route_rule_matcher.h",
],
visibility = ["//visibility:public"],
copts = ["-DNULL_PLUGIN"],
deps = [
":common_util",
":http_util_nullvm",
],
)
cc_library(
name = "regex_util",
hdrs = [
"regex.h",
],
visibility = ["//visibility:public"],
deps = [
":common_util",
"@com_googlesource_code_re2//:re2",
],
)
# genrule(
# name = "nlohmann_json_hpp",
# srcs = ["@com_github_nlohmann_json_single_header//file"],
# outs = ["nlohmann_json.hpp"],
# cmd = "cp $< $@",
# visibility = ["//visibility:public"],
# )
cc_library(
name = "json_util",
srcs = ["json_util.cc"],
hdrs = [
"json_util.h",
"nlohmann_json.hpp",
],
copts = ["-UNULL_PLUGIN"],
visibility = ["//visibility:public"],
deps = [
":common_util",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/types:optional",
],
)
exports_files([
"base64.h",
"json_util.cc",
"json_util.h",
])

200
plugins/wasm-cpp/common/base64.h Normal file
View File

@@ -0,0 +1,200 @@
/* Copyright 2019 Istio Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* From
* https://github.com/envoyproxy/envoy/blob/master/source/common/common/base64.{h,cc}
*/
#pragma once
#include <string>
static const std::string EMPTY_STRING;
class Base64 {
public:
static std::string encode(const char* input, uint64_t length,
bool add_padding);
static std::string encode(const char* input, uint64_t length) {
return encode(input, length, true);
}
static std::string decodeWithoutPadding(std::string_view input);
};
// clang-format off
inline constexpr char CHAR_TABLE[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
inline constexpr unsigned char REVERSE_LOOKUP_TABLE[256] = {
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64, 64, 0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64};
// clang-format on
inline bool decodeBase(const uint8_t cur_char, uint64_t pos, std::string& ret,
const unsigned char* const reverse_lookup_table) {
const unsigned char c = reverse_lookup_table[static_cast<uint32_t>(cur_char)];
if (c == 64) {
// Invalid character
return false;
}
switch (pos % 4) {
case 0:
ret.push_back(c << 2);
break;
case 1:
ret.back() |= c >> 4;
ret.push_back(c << 4);
break;
case 2:
ret.back() |= c >> 2;
ret.push_back(c << 6);
break;
case 3:
ret.back() |= c;
break;
}
return true;
}
inline bool decodeLast(const uint8_t cur_char, uint64_t pos, std::string& ret,
const unsigned char* const reverse_lookup_table) {
const unsigned char c = reverse_lookup_table[static_cast<uint32_t>(cur_char)];
if (c == 64) {
// Invalid character
return false;
}
switch (pos % 4) {
case 0:
return false;
case 1:
ret.back() |= c >> 4;
return (c & 0b1111) == 0;
case 2:
ret.back() |= c >> 2;
return (c & 0b11) == 0;
case 3:
ret.back() |= c;
break;
}
return true;
}
inline void encodeBase(const uint8_t cur_char, uint64_t pos, uint8_t& next_c,
std::string& ret, const char* const char_table) {
switch (pos % 3) {
case 0:
ret.push_back(char_table[cur_char >> 2]);
next_c = (cur_char & 0x03) << 4;
break;
case 1:
ret.push_back(char_table[next_c | (cur_char >> 4)]);
next_c = (cur_char & 0x0f) << 2;
break;
case 2:
ret.push_back(char_table[next_c | (cur_char >> 6)]);
ret.push_back(char_table[cur_char & 0x3f]);
next_c = 0;
break;
}
}
inline void encodeLast(uint64_t pos, uint8_t last_char, std::string& ret,
const char* const char_table, bool add_padding) {
switch (pos % 3) {
case 1:
ret.push_back(char_table[last_char]);
if (add_padding) {
ret.push_back('=');
ret.push_back('=');
}
break;
case 2:
ret.push_back(char_table[last_char]);
if (add_padding) {
ret.push_back('=');
}
break;
default:
break;
}
}
inline std::string Base64::encode(const char* input, uint64_t length,
bool add_padding) {
uint64_t output_length = (length + 2) / 3 * 4;
std::string ret;
ret.reserve(output_length);
uint64_t pos = 0;
uint8_t next_c = 0;
for (uint64_t i = 0; i < length; ++i) {
encodeBase(input[i], pos++, next_c, ret, CHAR_TABLE);
}
encodeLast(pos, next_c, ret, CHAR_TABLE, add_padding);
return ret;
}
inline std::string Base64::decodeWithoutPadding(std::string_view input) {
if (input.empty()) {
return EMPTY_STRING;
}
// At most last two chars can be '='.
size_t n = input.length();
if (input[n - 1] == '=') {
n--;
if (n > 0 && input[n - 1] == '=') {
n--;
}
}
// Last position before "valid" padding character.
uint64_t last = n - 1;
// Determine output length.
size_t max_length = (n + 3) / 4 * 3;
if (n % 4 == 3) {
max_length -= 1;
}
if (n % 4 == 2) {
max_length -= 2;
}
std::string ret;
ret.reserve(max_length);
for (uint64_t i = 0; i < last; ++i) {
if (!decodeBase(input[i], i, ret, REVERSE_LOOKUP_TABLE)) {
return EMPTY_STRING;
}
}
if (!decodeLast(input[last], last, ret, REVERSE_LOOKUP_TABLE)) {
return EMPTY_STRING;
}
ASSERT(ret.size() == max_length);
return ret;
}

59
plugins/wasm-cpp/common/common_util.h Normal file
View File

@@ -0,0 +1,59 @@
/*
* Copyright (c) 2022 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <string_view>
#include "absl/strings/string_view.h"
namespace Wasm::Common {
inline absl::string_view stdToAbsl(const std::string_view& str) {
return {str.data(), str.size()};
}
inline std::string_view abslToStd(const absl::string_view& str) {
return {str.data(), str.size()};
}
const char WhitespaceChars[] = " \t\f\v\n\r";
inline std::string_view ltrim(std::string_view source) {
const std::string_view::size_type pos =
source.find_first_not_of(WhitespaceChars);
if (pos != std::string_view::npos) {
source.remove_prefix(pos);
} else {
source.remove_prefix(source.size());
}
return source;
}
inline std::string_view rtrim(std::string_view source) {
const std::string_view::size_type pos =
source.find_last_not_of(WhitespaceChars);
if (pos != std::string_view::npos) {
source.remove_suffix(source.size() - pos - 1);
} else {
source.remove_suffix(source.size());
}
return source;
}
inline std::string_view trim(std::string_view source) {
return ltrim(rtrim(source));
}
} // namespace Wasm::Common

806
plugins/wasm-cpp/common/crypt_blowfish.c Normal file
View File

@@ -0,0 +1,806 @@
/* Modified by Rich Felker in for inclusion in musl libc, based on
* Solar Designer's second size-optimized version sent to the musl
* mailing list. */
/*
* The crypt_blowfish homepage is:
*
* http://www.openwall.com/crypt/
*
* This code comes from John the Ripper password cracker, with reentrant
* and crypt(3) interfaces added, but optimizations specific to password
* cracking removed.
*
* Written by Solar Designer <solar at openwall.com> in 1998-2012.
* No copyright is claimed, and the software is hereby placed in the public
* domain. In case this attempt to disclaim copyright and place the software
* in the public domain is deemed null and void, then the software is
* Copyright (c) 1998-2014 Solar Designer and it is hereby released to the
* general public under the following terms:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* There's ABSOLUTELY NO WARRANTY, express or implied.
*
* It is my intent that you should be able to use this on your system,
* as part of a software package, or anywhere else to improve security,
* ensure compatibility, or for any other purpose. I would appreciate
* it if you give credit where it is due and keep your modifications in
* the public domain as well, but I don't require that in order to let
* you place this code and any modifications you make under a license
* of your choice.
*
* This implementation is fully compatible with OpenBSD's bcrypt.c for prefix
* "$2b$", originally by Niels Provos <provos at citi.umich.edu>, and it uses
* some of his ideas. The password hashing algorithm was designed by David
* Mazieres <dm at lcs.mit.edu>. For information on the level of
* compatibility for bcrypt hash prefixes other than "$2b$", please refer to
* the comments in BF_set_key() below and to the included crypt(3) man page.
*
* There's a paper on the algorithm that explains its design decisions:
*
* http://www.usenix.org/events/usenix99/provos.html
*
* Some of the tricks in BF_ROUND might be inspired by Eric Young's
* Blowfish library (I can't be sure if I would think of something if I
* hadn't seen his code).
*/
#include <string.h>
#include <stdint.h>
typedef uint32_t BF_word;
typedef int32_t BF_word_signed;
/* Number of Blowfish rounds, this is also hardcoded into a few places */
#define BF_N 16
typedef BF_word BF_key[BF_N + 2];
typedef union {
struct {
BF_key P;
BF_word S[4][0x100];
} s;
BF_word PS[BF_N + 2 + 4 * 0x100];
} BF_ctx;
/*
* Magic IV for 64 Blowfish encryptions that we do at the end.
* The string is "OrpheanBeholderScryDoubt" on big-endian.
*/
static const BF_word BF_magic_w[6] = {
0x4F727068, 0x65616E42, 0x65686F6C,
0x64657253, 0x63727944, 0x6F756274
};
/*
* P-box and S-box tables initialized with digits of Pi.
*/
static const BF_ctx BF_init_state = {{
{
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
0x9216d5d9, 0x8979fb1b
}, {
{
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
}, {
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
}, {
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
}, {
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
}
}
}};
static const unsigned char BF_itoa64[64 + 1] =
"./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
static const unsigned char BF_atoi64[0x60] = {
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 0, 1,
54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 64, 64, 64, 64, 64,
64, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 64, 64, 64, 64, 64,
64, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 64, 64, 64, 64, 64
};
#define BF_safe_atoi64(dst, src) \
{ \
tmp = (unsigned char)(src); \
if ((unsigned int)(tmp -= 0x20) >= 0x60) return -1; \
tmp = BF_atoi64[tmp]; \
if (tmp > 63) return -1; \
(dst) = tmp; \
}
static int BF_decode(BF_word *dst, const char *src, int size)
{
unsigned char *dptr = (unsigned char *)dst;
unsigned char *end = dptr + size;
const unsigned char *sptr = (const unsigned char *)src;
unsigned int tmp, c1, c2, c3, c4;
do {
BF_safe_atoi64(c1, *sptr++);
BF_safe_atoi64(c2, *sptr++);
*dptr++ = (c1 << 2) | ((c2 & 0x30) >> 4);
if (dptr >= end) break;
BF_safe_atoi64(c3, *sptr++);
*dptr++ = ((c2 & 0x0F) << 4) | ((c3 & 0x3C) >> 2);
if (dptr >= end) break;
BF_safe_atoi64(c4, *sptr++);
*dptr++ = ((c3 & 0x03) << 6) | c4;
} while (dptr < end);
return 0;
}
static void BF_encode(char *dst, const BF_word *src, int size)
{
const unsigned char *sptr = (const unsigned char *)src;
const unsigned char *end = sptr + size;
unsigned char *dptr = (unsigned char *)dst;
unsigned int c1, c2;
do {
c1 = *sptr++;
*dptr++ = BF_itoa64[c1 >> 2];
c1 = (c1 & 0x03) << 4;
if (sptr >= end) {
*dptr++ = BF_itoa64[c1];
break;
}
c2 = *sptr++;
c1 |= c2 >> 4;
*dptr++ = BF_itoa64[c1];
c1 = (c2 & 0x0f) << 2;
if (sptr >= end) {
*dptr++ = BF_itoa64[c1];
break;
}
c2 = *sptr++;
c1 |= c2 >> 6;
*dptr++ = BF_itoa64[c1];
*dptr++ = BF_itoa64[c2 & 0x3f];
} while (sptr < end);
}
static void BF_swap(BF_word *x, int count)
{
if ((union { int i; char c; }){1}.c)
do {
BF_word tmp = *x;
tmp = (tmp << 16) | (tmp >> 16);
*x++ = ((tmp & 0x00FF00FF) << 8) | ((tmp >> 8) & 0x00FF00FF);
} while (--count);
}
#define BF_ROUND(L, R, N) \
tmp1 = L & 0xFF; \
tmp2 = L >> 8; \
tmp2 &= 0xFF; \
tmp3 = L >> 16; \
tmp3 &= 0xFF; \
tmp4 = L >> 24; \
tmp1 = ctx->s.S[3][tmp1]; \
tmp2 = ctx->s.S[2][tmp2]; \
tmp3 = ctx->s.S[1][tmp3]; \
tmp3 += ctx->s.S[0][tmp4]; \
tmp3 ^= tmp2; \
R ^= ctx->s.P[N + 1]; \
tmp3 += tmp1; \
R ^= tmp3;
static BF_word BF_encrypt(BF_ctx *ctx,
BF_word L, BF_word R,
BF_word *start, BF_word *end)
{
BF_word tmp1, tmp2, tmp3, tmp4;
BF_word *ptr = start;
do {
L ^= ctx->s.P[0];
#if 0
BF_ROUND(L, R, 0);
BF_ROUND(R, L, 1);
BF_ROUND(L, R, 2);
BF_ROUND(R, L, 3);
BF_ROUND(L, R, 4);
BF_ROUND(R, L, 5);
BF_ROUND(L, R, 6);
BF_ROUND(R, L, 7);
BF_ROUND(L, R, 8);
BF_ROUND(R, L, 9);
BF_ROUND(L, R, 10);
BF_ROUND(R, L, 11);
BF_ROUND(L, R, 12);
BF_ROUND(R, L, 13);
BF_ROUND(L, R, 14);
BF_ROUND(R, L, 15);
#else
for (int i=0; i<16; i+=2) {
BF_ROUND(L, R, i);
BF_ROUND(R, L, i+1);
}
#endif
tmp4 = R;
R = L;
L = tmp4 ^ ctx->s.P[BF_N + 1];
*ptr++ = L;
*ptr++ = R;
} while (ptr < end);
return L;
}
static void BF_set_key(const char *key, BF_key expanded, BF_key initial,
unsigned char flags)
{
const char *ptr = key;
unsigned int bug, i, j;
BF_word safety, sign, diff, tmp[2];
/*
* There was a sign extension bug in older revisions of this function. While
* we would have liked to simply fix the bug and move on, we have to provide
* a backwards compatibility feature (essentially the bug) for some systems and
* a safety measure for some others. The latter is needed because for certain
* multiple inputs to the buggy algorithm there exist easily found inputs to
* the correct algorithm that produce the same hash. Thus, we optionally
* deviate from the correct algorithm just enough to avoid such collisions.
* While the bug itself affected the majority of passwords containing
* characters with the 8th bit set (although only a percentage of those in a
* collision-producing way), the anti-collision safety measure affects
* only a subset of passwords containing the '\xff' character (not even all of
* those passwords, just some of them). This character is not found in valid
* UTF-8 sequences and is rarely used in popular 8-bit character encodings.
* Thus, the safety measure is unlikely to cause much annoyance, and is a
* reasonable tradeoff to use when authenticating against existing hashes that
* are not reliably known to have been computed with the correct algorithm.
*
* We use an approach that tries to minimize side-channel leaks of password
* information - that is, we mostly use fixed-cost bitwise operations instead
* of branches or table lookups. (One conditional branch based on password
* length remains. It is not part of the bug aftermath, though, and is
* difficult and possibly unreasonable to avoid given the use of C strings by
* the caller, which results in similar timing leaks anyway.)
*
* For actual implementation, we set an array index in the variable "bug"
* (0 means no bug, 1 means sign extension bug emulation) and a flag in the
* variable "safety" (bit 16 is set when the safety measure is requested).
* Valid combinations of settings are:
*
* Prefix "$2a$": bug = 0, safety = 0x10000
* Prefix "$2b$": bug = 0, safety = 0
* Prefix "$2x$": bug = 1, safety = 0
* Prefix "$2y$": bug = 0, safety = 0
*/
bug = flags & 1;
safety = ((BF_word)flags & 2) << 15;
sign = diff = 0;
for (i = 0; i < BF_N + 2; i++) {
tmp[0] = tmp[1] = 0;
for (j = 0; j < 4; j++) {
tmp[0] <<= 8;
tmp[0] |= (unsigned char)*ptr; /* correct */
tmp[1] <<= 8;
tmp[1] |= (signed char)*ptr; /* bug */
/*
* Sign extension in the first char has no effect - nothing to overwrite yet,
* and those extra 24 bits will be fully shifted out of the 32-bit word. For
* chars 2, 3, 4 in each four-char block, we set bit 7 of "sign" if sign
* extension in tmp[1] occurs. Once this flag is set, it remains set.
*/
if (j)
sign |= tmp[1] & 0x80;
if (!*ptr)
ptr = key;
else
ptr++;
}
diff |= tmp[0] ^ tmp[1]; /* Non-zero on any differences */
expanded[i] = tmp[bug];
initial[i] = BF_init_state.s.P[i] ^ tmp[bug];
}
/*
* At this point, "diff" is zero iff the correct and buggy algorithms produced
* exactly the same result. If so and if "sign" is non-zero, which indicates
* that there was a non-benign sign extension, this means that we have a
* collision between the correctly computed hash for this password and a set of
* passwords that could be supplied to the buggy algorithm. Our safety measure
* is meant to protect from such many-buggy to one-correct collisions, by
* deviating from the correct algorithm in such cases. Let's check for this.
*/
diff |= diff >> 16; /* still zero iff exact match */
diff &= 0xffff; /* ditto */
diff += 0xffff; /* bit 16 set iff "diff" was non-zero (on non-match) */
sign <<= 9; /* move the non-benign sign extension flag to bit 16 */
sign &= ~diff & safety; /* action needed? */
/*
* If we have determined that we need to deviate from the correct algorithm,
* flip bit 16 in initial expanded key. (The choice of 16 is arbitrary, but
* let's stick to it now. It came out of the approach we used above, and it's
* not any worse than any other choice we could make.)
*
* It is crucial that we don't do the same to the expanded key used in the main
* Eksblowfish loop. By doing it to only one of these two, we deviate from a
* state that could be directly specified by a password to the buggy algorithm
* (and to the fully correct one as well, but that's a side-effect).
*/
initial[0] ^= sign;
}
static const unsigned char flags_by_subtype[26] = {
2, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 4, 0
};
static char *BF_crypt(const char *key, const char *setting,
char *output, BF_word min)
{
struct {
BF_ctx ctx;
BF_key expanded_key;
union {
BF_word salt[4];
BF_word output[6];
} binary;
} data;
BF_word count;
int i;
if (setting[0] != '$' ||
setting[1] != '2' ||
setting[2] - 'a' > 25U ||
!flags_by_subtype[setting[2] - 'a'] ||
setting[3] != '$' ||
setting[4] - '0' > 1U ||
setting[5] - '0' > 9U ||
setting[6] != '$') {
return NULL;
}
count = (BF_word)1 << ((setting[4] - '0') * 10 + (setting[5] - '0'));
if (count < min || BF_decode(data.binary.salt, &setting[7], 16)) {
return NULL;
}
BF_swap(data.binary.salt, 4);
BF_set_key(key, data.expanded_key, data.ctx.s.P,
flags_by_subtype[setting[2] - 'a']);
memcpy(data.ctx.s.S, BF_init_state.s.S, sizeof(data.ctx.s.S));
{
BF_word L = 0, R = 0;
BF_word *ptr = &data.ctx.PS[0];
do {
L = BF_encrypt(&data.ctx,
L ^ data.binary.salt[0], R ^ data.binary.salt[1],
ptr, ptr);
R = *(ptr + 1);
ptr += 2;
if (ptr >= &data.ctx.PS[BF_N + 2 + 4 * 0x100])
break;
L = BF_encrypt(&data.ctx,
L ^ data.binary.salt[2], R ^ data.binary.salt[3],
ptr, ptr);
R = *(ptr + 1);
ptr += 2;
} while (1);
}
do {
int done;
for (i = 0; i < BF_N + 2; i += 2) {
data.ctx.s.P[i] ^= data.expanded_key[i];
data.ctx.s.P[i + 1] ^= data.expanded_key[i + 1];
}
done = 0;
do {
BF_encrypt(&data.ctx, 0, 0,
&data.ctx.PS[0],
&data.ctx.PS[BF_N + 2 + 4 * 0x100]);
if (done)
break;
done = 1;
{
BF_word tmp1, tmp2, tmp3, tmp4;
tmp1 = data.binary.salt[0];
tmp2 = data.binary.salt[1];
tmp3 = data.binary.salt[2];
tmp4 = data.binary.salt[3];
for (i = 0; i < BF_N; i += 4) {
data.ctx.s.P[i] ^= tmp1;
data.ctx.s.P[i + 1] ^= tmp2;
data.ctx.s.P[i + 2] ^= tmp3;
data.ctx.s.P[i + 3] ^= tmp4;
}
data.ctx.s.P[16] ^= tmp1;
data.ctx.s.P[17] ^= tmp2;
}
} while (1);
} while (--count);
for (i = 0; i < 6; i += 2) {
BF_word L, LR[2];
L = BF_magic_w[i];
LR[1] = BF_magic_w[i + 1];
count = 64;
do {
L = BF_encrypt(&data.ctx, L, LR[1],
&LR[0], &LR[0]);
} while (--count);
data.binary.output[i] = L;
data.binary.output[i + 1] = LR[1];
}
memcpy(output, setting, 7 + 22 - 1);
output[7 + 22 - 1] = BF_itoa64[
BF_atoi64[setting[7 + 22 - 1] - 0x20] & 0x30];
/* This has to be bug-compatible with the original implementation, so
* only encode 23 of the 24 bytes. :-) */
BF_swap(data.binary.output, 6);
BF_encode(&output[7 + 22], data.binary.output, 23);
output[7 + 22 + 31] = '\0';
return output;
}
/*
* Please preserve the runtime self-test. It serves two purposes at once:
*
* 1. We really can't afford the risk of producing incompatible hashes e.g.
* when there's something like gcc bug 26587 again, whereas an application or
* library integrating this code might not also integrate our external tests or
* it might not run them after every build. Even if it does, the miscompile
* might only occur on the production build, but not on a testing build (such
* as because of different optimization settings). It is painful to recover
* from incorrectly-computed hashes - merely fixing whatever broke is not
* enough. Thus, a proactive measure like this self-test is needed.
*
* 2. We don't want to leave sensitive data from our actual password hash
* computation on the stack or in registers. Previous revisions of the code
* would do explicit cleanups, but simply running the self-test after hash
* computation is more reliable.
*
* The performance cost of this quick self-test is around 0.6% at the "$2a$08"
* setting.
*/
char *__crypt_blowfish(const char *key, const char *setting, char *output)
{
const char *test_key = "8b \xd0\xc1\xd2\xcf\xcc\xd8";
const char *test_setting = "$2a$00$abcdefghijklmnopqrstuu";
static const char test_hashes[2][34] = {
"i1D709vfamulimlGcq0qq3UvuUasvEa\0\x55", /* 'a', 'b', 'y' */
"VUrPmXD6q/nVSSp7pNDhCR9071IfIRe\0\x55", /* 'x' */
};
const char *test_hash = test_hashes[0];
char *retval;
const char *p;
int ok;
struct {
char s[7 + 22 + 1];
char o[7 + 22 + 31 + 1 + 1 + 1];
} buf;
/* Hash the supplied password */
retval = BF_crypt(key, setting, output, 16);
/*
* Do a quick self-test. It is important that we make both calls to BF_crypt()
* from the same scope such that they likely use the same stack locations,
* which makes the second call overwrite the first call's sensitive data on the
* stack and makes it more likely that any alignment related issues would be
* detected by the self-test.
*/
memcpy(buf.s, test_setting, sizeof(buf.s));
if (retval) {
unsigned int flags = flags_by_subtype[setting[2] - 'a'];
test_hash = test_hashes[flags & 1];
buf.s[2] = setting[2];
}
memset(buf.o, 0x55, sizeof(buf.o));
buf.o[sizeof(buf.o) - 1] = 0;
p = BF_crypt(test_key, buf.s, buf.o, 1);
ok = (p == buf.o &&
!memcmp(p, buf.s, 7 + 22) &&
!memcmp(p + (7 + 22),
test_hash,
31 + 1 + 1 + 1));
{
const char *k = "\xff\xa3" "34" "\xff\xff\xff\xa3" "345";
BF_key ae, ai, ye, yi;
BF_set_key(k, ae, ai, 2); /* $2a$ */
BF_set_key(k, ye, yi, 4); /* $2y$ */
ai[0] ^= 0x10000; /* undo the safety (for comparison) */
ok = ok && ai[0] == 0xdb9c59bc && ye[17] == 0x33343500 &&
!memcmp(ae, ye, sizeof(ae)) &&
!memcmp(ai, yi, sizeof(ai));
}
if (ok && retval)
return retval;
return "*";
}

283
plugins/wasm-cpp/common/crypto_util.cc Normal file
View File

@@ -0,0 +1,283 @@
// Copyright (c) 2022 Alibaba Group Holding Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "crypto_util.h"
#include <crypt.h>
#include <openssl/sha.h>
#include <array>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <string_view>
#include "absl/strings/ascii.h"
#include "absl/strings/match.h"
#include "absl/strings/str_cat.h"
#include "base64.h"
extern "C" {
char* __crypt_blowfish(const char* key, const char* setting, char* output);
}
namespace Wasm::Common::Crypto {
namespace {
size_t getDigestLength(std::string_view name) {
if (name == "sha1") {
return SHA_DIGEST_LENGTH;
}
if (name == "sha224") {
return SHA224_DIGEST_LENGTH;
}
if (name == "sha256") {
return SHA256_DIGEST_LENGTH;
}
if (name == "sha384") {
return SHA384_DIGEST_LENGTH;
}
if (name == "sha512") {
return SHA512_DIGEST_LENGTH;
}
return 0;
}
const EVP_MD* getHashFunction(std::string_view name) {
// Hash algorithms set refers
// https://github.com/google/boringssl/blob/master/include/openssl/digest.h
if (name == "sha1") {
return EVP_sha1();
}
if (name == "sha224") {
return EVP_sha224();
}
if (name == "sha256") {
return EVP_sha256();
}
if (name == "sha384") {
return EVP_sha384();
}
if (name == "sha512") {
return EVP_sha512();
}
return nullptr;
}
} // namespace
std::vector<uint8_t> getShaHmac(std::string_view hash_type,
std::string_view key,
std::string_view message) {
auto length = getDigestLength(hash_type);
if (length == 0) {
return {};
}
const auto* hashFunc = getHashFunction(hash_type);
if (hashFunc == nullptr) {
return {};
}
std::vector<uint8_t> hmac(length);
HMAC(hashFunc, key.data(), key.size(),
reinterpret_cast<const uint8_t*>(message.data()), message.size(),
hmac.data(), nullptr);
return hmac;
}
std::string getShaHmacBase64(std::string_view hash_type, std::string_view key,
std::string_view message) {
auto hmac = getShaHmac(hash_type, key, message);
return Base64::encode(reinterpret_cast<const char*>(hmac.data()),
hmac.size());
}
std::vector<uint8_t> getMD5(std::string_view message) {
std::vector<uint8_t> md5(MD5_DIGEST_LENGTH);
MD5(reinterpret_cast<const uint8_t*>(message.data()), message.size(),
md5.data());
return md5;
}
std::string getMD5Base64(std::string_view message) {
auto md5 = getMD5(message);
return Base64::encode(reinterpret_cast<const char*>(md5.data()), md5.size());
}
bool libc_crypt(const std::string& key, const std::string& salt,
std::string& encrypted) {
char* value;
struct crypt_data cd;
cd.initialized = 0;
value = crypt_r(key.data(), salt.data(), &cd);
if (value != nullptr) {
encrypted = value;
return true;
}
return false;
}
void crypt_to64(std::string& encrypted, uint32_t v, size_t n) {
static u_char itoa64[] =
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
while (n-- > 0) {
encrypted.push_back(itoa64[v & 0x3f]);
v >>= 6;
}
}
bool crypt_apr1(const std::string& key, const std::string& salt,
std::string& encrypted) {
const char* salt_data;
const char* last;
std::array<u_char, 16> final_data;
salt_data = salt.data();
salt_data += sizeof("$apr1$") - 1;
// true salt: no magic, max 8 chars, stop at first $
last = salt_data + 8;
const char* p;
for (p = salt_data; *p != 0 && *p != '$' && p < last; p++) {
/* void */
}
size_t salt_len = p - salt_data;
MD5_CTX md5;
MD5_Init(&md5);
MD5_Update(&md5, key.data(), key.size());
MD5_Update(&md5, "$apr1$", sizeof("$apr1$") - 1);
MD5_Update(&md5, salt_data, salt_len);
MD5_CTX ctx1;
MD5_Init(&ctx1);
MD5_Update(&ctx1, key.data(), key.size());
MD5_Update(&ctx1, salt_data, salt_len);
MD5_Update(&ctx1, key.data(), key.size());
MD5_Final(final_data.data(), &ctx1);
for (int i = key.size(); i > 0; i -= 16) {
MD5_Update(&md5, final_data.data(), i > 16 ? 16 : i);
}
final_data.fill(0);
for (auto i = key.size(); i != 0; i >>= 1) {
if ((i & 1) != 0) {
MD5_Update(&md5, final_data.data(), 1);
} else {
MD5_Update(&md5, key.data(), 1);
}
}
MD5_Final(final_data.data(), &md5);
for (auto i = 0; i < 1000; i++) {
MD5_Init(&ctx1);
if ((i & 1) != 0) {
MD5_Update(&ctx1, key.data(), key.size());
} else {
MD5_Update(&ctx1, final_data.data(), 16);
}
if (i % 3 != 0) {
MD5_Update(&ctx1, salt_data, salt_len);
}
if (i % 7 != 0) {
MD5_Update(&ctx1, key.data(), key.size());
}
if ((i & 1) != 0) {
MD5_Update(&ctx1, final_data.data(), 16);
} else {
MD5_Update(&ctx1, key.data(), key.size());
}
MD5_Final(final_data.data(), &ctx1);
}
encrypted =
absl::StrCat("$apr1$", absl::string_view{salt_data, salt_len}, "$");
crypt_to64(encrypted,
(final_data[0] << 16) | (final_data[6] << 8) | final_data[12], 4);
crypt_to64(encrypted,
(final_data[1] << 16) | (final_data[7] << 8) | final_data[13], 4);
crypt_to64(encrypted,
(final_data[2] << 16) | (final_data[8] << 8) | final_data[14], 4);
crypt_to64(encrypted,
(final_data[3] << 16) | (final_data[9] << 8) | final_data[15], 4);
crypt_to64(encrypted,
(final_data[4] << 16) | (final_data[10] << 8) | final_data[5], 4);
crypt_to64(encrypted, final_data[11], 2);
return true;
}
bool crypt_plain(const std::string& key, const std::string& salt,
std::string& encrypted) {
encrypted = absl::StrCat("{PLAIN}", key);
return true;
}
bool crypt_ssha(const std::string& key, const std::string& salt,
std::string& encrypted) {
auto decoded = Base64::decodeWithoutPadding(
{salt.data() + sizeof("{SSHA}") - 1, salt.size() - sizeof("{SSHA}") + 1});
if (decoded.empty()) {
return false;
}
if (decoded.size() < 20) {
decoded.resize(20);
}
SHA_CTX sha1;
SHA1_Init(&sha1);
SHA1_Update(&sha1, key.data(), key.size());
SHA1_Update(&sha1, decoded.data() + 20, decoded.size() - 20);
SHA1_Final((u_char*)decoded.data(), &sha1);
encrypted =
absl::StrCat("{SSHA}", Base64::encode(decoded.data(), decoded.size()));
return true;
}
bool crypt_sha(const std::string& key, const std::string& salt,
std::string& encrypted) {
SHA_CTX sha1;
std::array<u_char, 20> digest;
SHA1_Init(&sha1);
SHA1_Update(&sha1, key.data(), key.size());
SHA1_Final(digest.data(), &sha1);
encrypted = absl::StrCat("{SHA}",
Base64::encode((char*)digest.data(), digest.size()));
return true;
}
bool bcrypt(const std::string& key, const std::string& salt,
std::string& encrypted) {
struct crypt_data cd;
cd.initialized = 0;
char* value = __crypt_blowfish(key.data(), salt.data(), (char*)&cd);
if (value != nullptr) {
encrypted = value;
return true;
}
return false;
}
bool crypt(const std::string& key, const std::string& salt,
std::string& encrypted) {
if (absl::StartsWith(salt, "$apr1$")) {
return crypt_apr1(key, salt, encrypted);
}
if (absl::StartsWith(salt, "{SHA}")) {
return crypt_sha(key, salt, encrypted);
}
if (absl::StartsWith(salt, "{SSHA}")) {
return crypt_ssha(key, salt, encrypted);
}
if (absl::StartsWith(salt, "{PLAIN}")) {
return crypt_plain(key, salt, encrypted);
}
if (salt.size() > 3 && salt[1] == '2' && salt[3] == '$') {
return bcrypt(key, salt, encrypted);
}
// fallback to libc crypt()
return libc_crypt(key, salt, encrypted);
}
} // namespace Wasm::Common::Crypto

44
plugins/wasm-cpp/common/crypto_util.h Normal file
View File

@@ -0,0 +1,44 @@
/*
* Copyright (c) 2022 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <cstdint>
#include <string>
#include <vector>
#include "openssl/hmac.h"
#include "openssl/md5.h"
#include "openssl/sha.h"
#define ASSERT(_X) assert(_X)
namespace Wasm::Common::Crypto {
std::vector<uint8_t> getShaHmac(std::string_view hash_type,
std::string_view key, std::string_view message);
std::string getShaHmacBase64(std::string_view hash_type, std::string_view key,
std::string_view message);
std::vector<uint8_t> getMD5(std::string_view message);
std::string getMD5Base64(std::string_view message);
bool crypt(const std::string& key, const std::string& salt,
std::string& encrypted);
} // namespace Wasm::Common::Crypto

269
plugins/wasm-cpp/common/http_util.cc Normal file
View File

@@ -0,0 +1,269 @@
// Copyright (c) 2022 Alibaba Group Holding Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "http_util.h"
#include "absl/strings/ascii.h"
#include "absl/strings/match.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/str_format.h"
#include "absl/strings/str_split.h"
namespace Wasm::Common::Http {
std::string_view stripPortFromHost(std::string_view request_host) {
// Remove port, if there is any. At Istio 1.10, port will be stripped
// by default https://github.com/istio/istio/issues/25350.
// Port removing code is inspired by
// https://github.com/envoyproxy/envoy/blob/v1.17.0/source/common/http/header_utility.cc#L219
const std::string_view::size_type port_start = request_host.rfind(':');
if (port_start != std::string_view::npos) {
// According to RFC3986 v6 address is always enclosed in "[]".
// section 3.2.2.
const auto v6_end_index = request_host.rfind("]");
if (v6_end_index == std::string_view::npos || v6_end_index < port_start) {
if ((port_start + 1) <= request_host.size()) {
return request_host.substr(0, port_start);
}
}
}
return request_host;
}
std::string PercentEncoding::encode(absl::string_view value,
absl::string_view reserved_chars) {
std::unordered_set<char> reserved_char_set{reserved_chars.begin(),
reserved_chars.end()};
for (size_t i = 0; i < value.size(); ++i) {
const char& ch = value[i];
// The escaping characters are defined in
// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#responses.
//
// We do checking for each char in the string. If the current char is
// included in the defined escaping characters, we jump to "the slow path"
// (append the char [encoded or not encoded] to the returned string one by
// one) started from the current index.
if (ch < ' ' || ch >= '~' ||
reserved_char_set.find(ch) != reserved_char_set.end()) {
return PercentEncoding::encode(value, i, reserved_char_set);
}
}
return std::string(value);
}
std::string PercentEncoding::encode(
absl::string_view value, size_t index,
const std::unordered_set<char>& reserved_char_set) {
std::string encoded;
if (index > 0) {
absl::StrAppend(&encoded, value.substr(0, index));
}
for (size_t i = index; i < value.size(); ++i) {
const char& ch = value[i];
if (ch < ' ' || ch >= '~' ||
reserved_char_set.find(ch) != reserved_char_set.end()) {
// For consistency, URI producers should use uppercase hexadecimal digits
// for all percent-encodings.
// https://tools.ietf.org/html/rfc3986#section-2.1.
absl::StrAppend(&encoded, absl::StrFormat("%02X", ch));
} else {
encoded.push_back(ch);
}
}
return encoded;
}
std::string PercentEncoding::decode(absl::string_view encoded) {
std::string decoded;
decoded.reserve(encoded.size());
for (size_t i = 0; i < encoded.size(); ++i) {
char ch = encoded[i];
if (ch == '%' && i + 2 < encoded.size()) {
const char& hi = encoded[i + 1];
const char& lo = encoded[i + 2];
if (absl::ascii_isdigit(hi)) {
ch = hi - '0';
} else {
ch = absl::ascii_toupper(hi) - 'A' + 10;
}
ch *= 16;
if (absl::ascii_isdigit(lo)) {
ch += lo - '0';
} else {
ch += absl::ascii_toupper(lo) - 'A' + 10;
}
i += 2;
}
decoded.push_back(ch);
}
return decoded;
}
SystemTime httpTime(std::string_view date) {
absl::Time time;
static constexpr std::array<absl::string_view, 4> rfc7231_date_formats = {
"%a, %d %b %Y %H:%M:%S GMT", "%a, %d %b %Y %H:%M:%S GMT+00:00",
"%A, %d-%b-%y %H:%M:%S GMT", "%a %b %e %H:%M:%S %Y"};
for (auto format : rfc7231_date_formats) {
if (absl::ParseTime(format, absl::string_view(date.data(), date.size()),
&time, nullptr)) {
return absl::ToChronoTime(time);
}
}
return {};
}
QueryParams parseQueryString(absl::string_view url) {
size_t start = url.find('?');
if (start == std::string::npos) {
QueryParams params;
return params;
}
start++;
return parseParameters(url, start, /*decode_params=*/false);
}
QueryParams parseAndDecodeQueryString(absl::string_view url) {
size_t start = url.find('?');
if (start == std::string::npos) {
QueryParams params;
return params;
}
start++;
return parseParameters(url, start, /*decode_params=*/true);
}
QueryParams parseFromBody(absl::string_view body) {
return parseParameters(body, 0, /*decode_params=*/true);
}
inline std::string subspan(absl::string_view source, size_t start, size_t end) {
return {source.data() + start, end - start};
}
QueryParams parseParameters(absl::string_view data, size_t start,
bool decode_params) {
QueryParams params;
while (start < data.size()) {
size_t end = data.find('&', start);
if (end == std::string::npos) {
end = data.size();
}
absl::string_view param(data.data() + start, end - start);
const size_t equal = param.find('=');
if (equal != std::string::npos) {
const auto param_name = subspan(data, start, start + equal);
const auto param_value = subspan(data, start + equal + 1, end);
params.emplace(
decode_params ? PercentEncoding::decode(param_name) : param_name,
decode_params ? PercentEncoding::decode(param_value) : param_value);
} else {
params.emplace(subspan(data, start, end), "");
}
start = end + 1;
}
return params;
}
std::vector<std::string> getAllOfHeader(std::string_view key) {
std::vector<std::string> result;
auto headers = getRequestHeaderPairs()->pairs();
for (auto& header : headers) {
if (absl::EqualsIgnoreCase(header.first, key)) {
result.push_back(std::string(header.second));
}
}
return result;
}
void forEachCookie(
std::string_view cookie_header,
const std::function<bool(absl::string_view, absl::string_view)>&
cookie_consumer) {
auto cookie_headers = getAllOfHeader(cookie_header);
for (auto& cookie_header_value : cookie_headers) {
// Split the cookie header into individual cookies.
for (const auto& s :
absl::StrSplit(cookie_header_value, ";", absl::SkipEmpty())) {
// Find the key part of the cookie (i.e. the name of the cookie).
size_t first_non_space = s.find_first_not_of(' ');
size_t equals_index = s.find('=');
if (equals_index == absl::string_view::npos) {
// The cookie is malformed if it does not have an `=`. Continue
// checking other cookies in this header.
continue;
}
absl::string_view k =
s.substr(first_non_space, equals_index - first_non_space);
absl::string_view v = s.substr(equals_index + 1, s.size() - 1);
// Cookie values may be wrapped in double quotes.
// https://tools.ietf.org/html/rfc6265#section-4.1.1
if (v.size() >= 2 && v.back() == '"' && v[0] == '"') {
v = v.substr(1, v.size() - 2);
}
if (!cookie_consumer(k, v)) {
return;
}
}
}
}
std::unordered_map<std::string, std::string> parseCookies(
const std::function<bool(std::string_view)>& key_filter) {
std::unordered_map<std::string, std::string> cookies;
forEachCookie(
Header::Cookie,
[&cookies, &key_filter](std::string_view k, std::string_view v) -> bool {
if (key_filter(k)) {
cookies.emplace(k, v);
}
// continue iterating until all cookies are processed.
return true;
});
return cookies;
}
std::string buildOriginalUri(std::optional<uint32_t> max_path_length) {
auto path_ptr = getRequestHeader(Header::Path);
auto path = path_ptr->view();
if (path.empty()) {
return "";
}
auto envoy_path_ptr = getRequestHeader(Header::EnvoyOriginalPath);
auto envoy_path = envoy_path_ptr->view();
std::string_view final_path(envoy_path.empty() ? path : envoy_path);
if (max_path_length && final_path.length() > max_path_length) {
final_path = final_path.substr(0, max_path_length.value());
}
auto scheme_ptr = getRequestHeader(Header::Scheme);
auto scheme = scheme_ptr->view();
auto host_ptr = getRequestHeader(Header::Host);
auto host = host_ptr->view();
return absl::StrCat(scheme, "://", host, final_path);
}
} // namespace Wasm::Common::Http

145
plugins/wasm-cpp/common/http_util.h Normal file
View File

@@ -0,0 +1,145 @@
/*
* Copyright (c) 2022 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <array>
#include <chrono>
#include <map>
#include <unordered_set>
#include "absl/strings/string_view.h"
#include "absl/time/time.h"
#ifndef NULL_PLUGIN
#include "proxy_wasm_intrinsics.h"
#else
#include "include/proxy-wasm/null_plugin.h"
using namespace proxy_wasm::null_plugin;
using proxy_wasm::FilterDataStatus;
using proxy_wasm::FilterHeadersStatus;
#endif
namespace Wasm::Common::Http {
using QueryParams = std::map<std::string, std::string>;
using SystemTime = std::chrono::time_point<std::chrono::system_clock>;
namespace Header {
constexpr std::string_view Scheme(":scheme");
constexpr std::string_view Method(":method");
constexpr std::string_view Host(":authority");
constexpr std::string_view Path(":path");
constexpr std::string_view EnvoyOriginalPath("x-envoy-original-path");
constexpr std::string_view Accept("accept");
constexpr std::string_view ContentMD5("content-md5");
constexpr std::string_view ContentType("content-type");
constexpr std::string_view ContentLength("content-length");
constexpr std::string_view UserAgent("user-agent");
constexpr std::string_view Date("date");
constexpr std::string_view Cookie("cookie");
} // namespace Header
namespace ContentTypeValues {
constexpr std::string_view Grpc{"application/grpc"};
}
class PercentEncoding {
public:
/**
* Encodes string view to its percent encoded representation. Non-visible
* ASCII is always escaped, in addition to a given list of reserved chars.
*
* @param value supplies string to be encoded.
* @param reserved_chars list of reserved chars to escape. By default the
* escaped chars in
* https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#responses
* are used.
* @return std::string percent-encoded string.
*/
static std::string encode(absl::string_view value,
absl::string_view reserved_chars = "%");
/**
* Decodes string view from its percent encoded representation.
* @param encoded supplies string to be decoded.
* @return std::string decoded string
* https://tools.ietf.org/html/rfc3986#section-2.1.
*/
static std::string decode(absl::string_view value);
private:
// Encodes string view to its percent encoded representation, with start
// index.
static std::string encode(absl::string_view value, size_t index,
const std::unordered_set<char>& reserved_char_set);
};
SystemTime httpTime(std::string_view date);
inline bool timePointValid(SystemTime time_point) {
return std::chrono::duration_cast<std::chrono::milliseconds>(
time_point.time_since_epoch())
.count() != 0;
}
std::string_view stripPortFromHost(std::string_view request_host);
/**
* Parse a URL into query parameters.
* @param url supplies the url to parse.
* @return QueryParams the parsed parameters, if any.
*/
QueryParams parseQueryString(absl::string_view url);
/**
* Parse a URL into query parameters.
* @param url supplies the url to parse.
* @return QueryParams the parsed and percent-decoded parameters, if any.
*/
QueryParams parseAndDecodeQueryString(absl::string_view url);
/**
* Parse a a request body into query parameters.
* @param body supplies the body to parse.
* @return QueryParams the parsed parameters, if any.
*/
QueryParams parseFromBody(absl::string_view body);
/**
* Parse query parameters from a URL or body.
* @param data supplies the data to parse.
* @param start supplies the offset within the data.
* @param decode_params supplies the flag whether to percent-decode the parsed
* parameters (both name and value). Set to false to keep the parameters
* encoded.
* @return QueryParams the parsed parameters, if any.
*/
QueryParams parseParameters(absl::string_view data, size_t start,
bool decode_params);
std::vector<std::string> getAllOfHeader(std::string_view key);
std::unordered_map<std::string, std::string> parseCookies(
const std::function<bool(std::string_view)>& key_filter);
std::string buildOriginalUri(std::optional<uint32_t> max_path_length);
} // namespace Wasm::Common::Http

199
plugins/wasm-cpp/common/json_util.cc Normal file
View File

@@ -0,0 +1,199 @@
/* Copyright 2020 Istio Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "json_util.h"
#include <string>
#include "absl/strings/numbers.h"
namespace Wasm {
namespace Common {
std::optional<JsonObject> JsonParse(std::string_view str) {
const auto result = JsonObject::parse(str, nullptr, false);
if (result.is_discarded() || !result.is_object()) {
return std::nullopt;
}
return result;
}
template <>
std::pair<std::optional<int64_t>, JsonParserResultDetail> JsonValueAs<int64_t>(
const JsonObject& j) {
if (j.is_number()) {
return std::make_pair(j.get<int64_t>(), JsonParserResultDetail::OK);
} else if (j.is_string()) {
int64_t result = 0;
if (absl::SimpleAtoi(j.get_ref<std::string const&>(), &result)) {
return std::make_pair(result, JsonParserResultDetail::OK);
} else {
return std::make_pair(std::nullopt,
JsonParserResultDetail::INVALID_VALUE);
}
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
template <>
std::pair<std::optional<uint64_t>, JsonParserResultDetail>
JsonValueAs<uint64_t>(const JsonObject& j) {
if (j.is_number()) {
return std::make_pair(j.get<uint64_t>(), JsonParserResultDetail::OK);
} else if (j.is_string()) {
uint64_t result = 0;
if (absl::SimpleAtoi(j.get_ref<std::string const&>(), &result)) {
return std::make_pair(result, JsonParserResultDetail::OK);
} else {
return std::make_pair(std::nullopt,
JsonParserResultDetail::INVALID_VALUE);
}
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
template <>
std::pair<std::optional<std::string_view>, JsonParserResultDetail>
JsonValueAs<std::string_view>(const JsonObject& j) {
if (j.is_string()) {
return std::make_pair(std::string_view(j.get_ref<std::string const&>()),
JsonParserResultDetail::OK);
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
template <>
std::pair<std::optional<std::string>, JsonParserResultDetail>
JsonValueAs<std::string>(const JsonObject& j) {
if (j.is_string()) {
return std::make_pair(j.get_ref<std::string const&>(),
JsonParserResultDetail::OK);
}
if (j.is_number_unsigned()) {
return std::make_pair(
std::to_string((unsigned long long)(j.get<uint64_t>())),
JsonParserResultDetail::OK);
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
template <>
std::pair<std::optional<bool>, JsonParserResultDetail> JsonValueAs<bool>(
const JsonObject& j) {
if (j.is_boolean()) {
return std::make_pair(j.get<bool>(), JsonParserResultDetail::OK);
}
if (j.is_string()) {
const std::string& v = j.get_ref<std::string const&>();
if (v == "true") {
return std::make_pair(true, JsonParserResultDetail::OK);
} else if (v == "false") {
return std::make_pair(false, JsonParserResultDetail::OK);
} else {
return std::make_pair(std::nullopt,
JsonParserResultDetail::INVALID_VALUE);
}
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
template <>
std::pair<std::optional<std::vector<std::string_view>>, JsonParserResultDetail>
JsonValueAs<std::vector<std::string_view>>(const JsonObject& j) {
std::pair<std::optional<std::vector<std::string_view>>,
JsonParserResultDetail>
values = std::make_pair(std::nullopt, JsonParserResultDetail::OK);
if (j.is_array()) {
for (const auto& elt : j) {
if (!elt.is_string()) {
values.first = std::nullopt;
values.second = JsonParserResultDetail::TYPE_ERROR;
return values;
}
if (!values.first.has_value()) {
values.first = std::vector<std::string_view>();
}
values.first->emplace_back(elt.get_ref<std::string const&>());
}
return values;
}
values.second = JsonParserResultDetail::TYPE_ERROR;
return values;
}
template <>
std::pair<std::optional<JsonObject>, JsonParserResultDetail>
JsonValueAs<JsonObject>(const JsonObject& j) {
if (j.is_object()) {
return std::make_pair(j.get<JsonObject>(), JsonParserResultDetail::OK);
}
return std::make_pair(std::nullopt, JsonParserResultDetail::TYPE_ERROR);
}
bool JsonArrayIterate(
const JsonObject& j, std::string_view field,
const std::function<bool(const JsonObject& elt)>& visitor) {
auto it = j.find(field);
if (it == j.end()) {
return true;
}
if (!it.value().is_array()) {
return false;
}
for (const auto& elt : it.value().items()) {
if (!visitor(elt.value())) {
return false;
}
}
return true;
}
bool JsonObjectIterate(const JsonObject& j, std::string_view field,
const std::function<bool(std::string key)>& visitor) {
auto it = j.find(field);
if (it == j.end()) {
return true;
}
if (!it.value().is_object()) {
return false;
}
for (const auto& elt : it.value().items()) {
auto json_value = JsonValueAs<std::string>(elt.key());
if (json_value.second != JsonParserResultDetail::OK) {
return false;
}
if (!visitor(json_value.first.value())) {
return false;
}
}
return true;
}
bool JsonObjectIterate(const JsonObject& j,
const std::function<bool(std::string key)>& visitor) {
for (const auto& elt : j.items()) {
auto json_value = JsonValueAs<std::string>(elt.key());
if (json_value.second != JsonParserResultDetail::OK) {
return false;
}
if (!visitor(json_value.first.value())) {
return false;
}
}
return true;
}
} // namespace Common
} // namespace Wasm

120
plugins/wasm-cpp/common/json_util.h Normal file
View File

@@ -0,0 +1,120 @@
/* Copyright 2020 Istio Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "common/nlohmann_json.hpp"
/**
* Utilities for working with JSON without exceptions.
*/
namespace Wasm {
namespace Common {
using JsonObject = ::nlohmann::json;
enum JsonParserResultDetail {
UNKNOWN,
OK,
OUT_OF_RANGE,
TYPE_ERROR,
INVALID_VALUE,
};
std::optional<JsonObject> JsonParse(std::string_view str);
template <typename T>
std::pair<std::optional<T>, JsonParserResultDetail> JsonValueAs(
const JsonObject&) {
static_assert(true, "Unsupported Type");
}
template <>
std::pair<std::optional<std::string_view>, JsonParserResultDetail>
JsonValueAs<std::string_view>(const JsonObject& j);
template <>
std::pair<std::optional<std::string>, JsonParserResultDetail>
JsonValueAs<std::string>(const JsonObject& j);
template <>
std::pair<std::optional<int64_t>, JsonParserResultDetail> JsonValueAs<int64_t>(
const JsonObject& j);
template <>
std::pair<std::optional<uint64_t>, JsonParserResultDetail>
JsonValueAs<uint64_t>(const JsonObject& j);
template <>
std::pair<std::optional<bool>, JsonParserResultDetail> JsonValueAs<bool>(
const JsonObject& j);
template <>
std::pair<std::optional<JsonObject>, JsonParserResultDetail>
JsonValueAs<JsonObject>(const JsonObject& j);
template <>
std::pair<std::optional<std::vector<std::string_view>>, JsonParserResultDetail>
JsonValueAs<std::vector<std::string_view>>(const JsonObject& j);
template <class T>
class JsonGetField {
public:
JsonGetField(const JsonObject& j, std::string_view field);
const JsonParserResultDetail& detail() { return detail_; }
T value() { return object_; }
T value_or(T v) {
if (detail_ != JsonParserResultDetail::OK)
return v;
else
return object_;
};
private:
JsonParserResultDetail detail_;
T object_;
};
template <class T>
JsonGetField<T>::JsonGetField(const JsonObject& j, std::string_view field) {
auto it = j.find(field);
if (it == j.end()) {
detail_ = JsonParserResultDetail::OUT_OF_RANGE;
return;
}
auto value = JsonValueAs<T>(it.value());
detail_ = value.second;
if (value.first.has_value()) {
object_ = value.first.value();
}
}
// Iterate over an optional array field.
// Returns false if set and not an array, or any of the visitor calls returns
// false.
bool JsonArrayIterate(
const JsonObject& j, std::string_view field,
const std::function<bool(const JsonObject& elt)>& visitor);
// Iterate over an optional object field key set.
// Returns false if set and not an object, or any of the visitor calls returns
// false.
bool JsonObjectIterate(const JsonObject& j, std::string_view field,
const std::function<bool(std::string key)>& visitor);
bool JsonObjectIterate(const JsonObject& j,
const std::function<bool(std::string key)>& visitor);
} // namespace Common
} // namespace Wasm

22875
plugins/wasm-cpp/common/nlohmann_json.hpp Normal file
View File

File diff suppressed because it is too large Load Diff

61
plugins/wasm-cpp/common/regex.h Normal file
View File

@@ -0,0 +1,61 @@
/*
* Copyright (c) 2022 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <stdexcept>
#include <string>
#include "re2/re2.h"
namespace Wasm::Common::Regex {
class CompiledGoogleReMatcher {
public:
CompiledGoogleReMatcher(const std::string& regex,
bool do_program_size_check = true)
: regex_(regex, re2::RE2::Quiet) {
if (!regex_.ok()) {
throw std::runtime_error(regex_.error());
}
if (do_program_size_check) {
const auto regex_program_size =
static_cast<uint32_t>(regex_.ProgramSize());
if (regex_program_size > 100) {
throw std::runtime_error("too complex regex: " + regex);
}
}
}
bool match(std::string_view value) const {
return re2::RE2::FullMatch(re2::StringPiece(value.data(), value.size()),
regex_);
}
std::string replaceAll(std::string_view value,
std::string_view substitution) const {
std::string result = std::string(value);
re2::RE2::GlobalReplace(
&result, regex_,
re2::StringPiece(substitution.data(), substitution.size()));
return result;
}
private:
const re2::RE2 regex_;
};
} // namespace Wasm::Common::Regex

461
plugins/wasm-cpp/common/route_rule_matcher.h Normal file
View File

@@ -0,0 +1,461 @@
/*
* Copyright (c) 2022 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <optional>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include "absl/strings/match.h"
#include "absl/strings/str_cat.h"
#include "common/json_util.h"
#include "http_util.h"
#ifndef NULL_PLUGIN
#include "proxy_wasm_intrinsics.h"
#else
#include "include/proxy-wasm/null_plugin.h"
using namespace proxy_wasm::null_plugin;
using proxy_wasm::FilterDataStatus;
using proxy_wasm::FilterHeadersStatus;
#endif
#define GET_HEADER_VIEW(key, name) \
auto name##_ptr = getRequestHeader(key); \
auto name = name##_ptr->view();
#define GET_RESPONSE_HEADER_VIEW(key, name) \
auto name##_ptr = getResponseHeader(key); \
auto name = name##_ptr->view();
using ::nlohmann::json;
using ::Wasm::Common::JsonArrayIterate;
using ::Wasm::Common::JsonGetField;
using ::Wasm::Common::JsonObjectIterate;
using ::Wasm::Common::JsonValueAs;
template <typename PluginConfig>
class RouteRuleMatcher {
public:
enum CATEGORY { Route, Host };
enum MATCH_TYPE { Prefix, Exact, Suffix };
struct RuleConfig {
CATEGORY category;
std::unordered_set<std::string> routes;
std::vector<std::pair<MATCH_TYPE, std::string>> hosts;
PluginConfig config;
};
struct AuthRuleConfig {
RuleConfig rule_config;
std::unordered_set<std::string> allow_set;
bool has_local_config = false;
};
RouteRuleMatcher() = default;
virtual ~RouteRuleMatcher() = default;
void setInvalidConfig() { invalid_config_ = true; }
std::vector<std::pair<int, std::reference_wrapper<PluginConfig>>> getRules() {
std::vector<std::pair<int, std::reference_wrapper<PluginConfig>>> rules;
rules.reserve(rule_config_.size() + 1);
if (global_config_) {
rules.emplace_back(0, global_config_.value());
}
for (int i = 0; i < rule_config_.size(); i++) {
rules.emplace_back(i + 1, rule_config_[i].config);
}
return rules;
}
FilterHeadersStatus onHeaders(
const std::function<FilterHeadersStatus(const PluginConfig&)> process) {
if (invalid_config_) {
return FilterHeadersStatus::Continue;
}
auto config = getMatchConfig();
if (!config.second) {
return FilterHeadersStatus::Continue;
}
return process(config.second.value());
}
bool checkRule(const std::function<bool(const PluginConfig&)> checkPlugin) {
if (invalid_config_) {
return true;
}
auto config = getMatchConfig();
if (!config.second) {
// No config need to check
return true;
}
return checkPlugin(config.second.value());
}
bool checkAuthRule(
const std::function<
bool(const PluginConfig&,
const std::optional<std::unordered_set<std::string>>& allow_set)>
checkPlugin) {
if (invalid_config_) {
return true;
}
auto config = getMatchAuthConfig();
if (!config.first) {
// No config need to check
LOG_DEBUG("no match config");
return true;
}
return checkPlugin(config.first.value(), config.second);
}
bool checkRuleWithId(
const std::function<bool(int, const PluginConfig&)> checkPlugin) {
if (invalid_config_) {
return true;
}
auto config = getMatchConfig();
if (!config.second) {
// No config need to check
return true;
}
return checkPlugin(config.first, config.second.value());
}
std::pair<int, std::optional<std::reference_wrapper<PluginConfig>>>
getMatchConfig() {
auto request_host_header = getRequestHeader(":authority");
auto request_host = request_host_header->view();
std::string route_name;
getValue({"route_name"}, &route_name);
std::optional<std::reference_wrapper<PluginConfig>> match_config;
int rule_id;
if (global_config_) {
rule_id = 0;
match_config = global_config_.value();
}
for (int i = 0; i < rule_config_.size(); ++i) {
auto& rule = rule_config_[i];
if (rule.category == CATEGORY::Host) {
if (hostMatch(rule, request_host)) {
rule_id = i + 1;
match_config = rule.config;
break;
}
}
// category == Route
if (rule.routes.find(route_name) != rule.routes.end()) {
rule_id = i + 1;
match_config = rule.config;
break;
}
}
if (match_config) {
return std::make_pair(rule_id, match_config);
}
return std::make_pair(-1, match_config);
}
std::pair<
std::optional<std::reference_wrapper<PluginConfig>>,
std::optional<std::reference_wrapper<std::unordered_set<std::string>>>>
getMatchAuthConfig() {
auto request_host_header = getRequestHeader(":authority");
auto request_host = request_host_header->view();
std::string route_name;
getValue({"route_name"}, &route_name);
std::optional<std::reference_wrapper<PluginConfig>> match_config;
std::optional<std::reference_wrapper<std::unordered_set<std::string>>>
allow_set;
if (global_config_) {
match_config = global_config_.value();
}
if (auth_rule_config_.empty()) {
return std::make_pair(match_config, std::nullopt);
}
bool is_matched = false;
for (auto& auth_rule : auth_rule_config_) {
if (auth_rule.rule_config.category == CATEGORY::Host) {
if (hostMatch(auth_rule.rule_config, request_host)) {
is_matched = true;
if (auth_rule.has_local_config) {
LOG_DEBUG("has local config");
match_config = auth_rule.rule_config.config;
} else {
LOG_DEBUG("has not local config");
allow_set = auth_rule.allow_set;
}
break;
}
}
// category == Route
if (auth_rule.rule_config.routes.find(route_name) !=
auth_rule.rule_config.routes.end()) {
is_matched = true;
if (auth_rule.has_local_config) {
match_config = auth_rule.rule_config.config;
} else {
allow_set = auth_rule.allow_set;
}
break;
}
}
return is_matched ? std::make_pair(match_config, allow_set)
: std::make_pair(std::nullopt, std::nullopt);
}
void setEmptyGlobalConfig() { global_config_ = PluginConfig{}; }
bool parseRuleConfig(const json& config) {
bool has_rules = false;
int32_t key_count = config.size();
auto it = config.find("_rules_");
if (it != config.end()) {
has_rules = true;
key_count--;
}
PluginConfig plugin_config;
// has other config fields
if (key_count > 0 && parsePluginConfig(config, plugin_config)) {
global_config_ = std::move(plugin_config);
}
if (!has_rules) {
return global_config_ ? true : false;
}
auto rules = it.value();
if (!rules.is_array()) {
LOG_WARN("'_rules_' field is not an array");
return false;
}
for (const auto& item : rules.items()) {
RuleConfig rule;
auto config = item.value();
if (!parsePluginConfig(config, rule.config)) {
LOG_WARN("parse rule's config failed");
return false;
}
if (!parseRouteMatchConfig(config, rule.routes)) {
LOG_WARN("failed to parse configuration for _match_route_");
return false;
}
if (!parseDomainMatchConfig(config, rule.hosts)) {
LOG_WARN("failed to parse configuration for _match_domain_");
return false;
}
auto no_route = rule.routes.empty();
auto no_host = rule.hosts.empty();
if ((no_route && no_host) || (!no_route && !no_host)) {
LOG_WARN(
"there is only one of '_match_route_' and '_match_domain_' can "
"present in configuration.");
return false;
}
if (!no_route) {
rule.category = CATEGORY::Route;
} else {
rule.category = CATEGORY::Host;
}
rule_config_.push_back(std::move(rule));
}
return true;
}
bool parseAuthRuleConfig(const json& config) {
bool has_rules = false;
int32_t key_count = config.size();
auto it = config.find("_rules_");
if (it != config.end()) {
has_rules = true;
key_count--;
}
PluginConfig plugin_config;
// has other config fields
if (key_count > 0 && parsePluginConfig(config, plugin_config)) {
global_config_ = std::move(plugin_config);
}
if (!has_rules) {
return global_config_ ? true : false;
}
auto rules = it.value();
if (!rules.is_array()) {
LOG_WARN("'_rules_' field is not an array");
return false;
}
for (const auto& item : rules.items()) {
AuthRuleConfig auth_rule;
auto config = item.value();
auto has_allow = config.find("allow");
if (has_allow != config.end()) {
LOG_DEBUG("has allow filed");
if (!JsonArrayIterate(config, "allow", [&](const json& allow) -> bool {
auto parse_result = JsonValueAs<std::string>(allow);
if (parse_result.second !=
Wasm::Common::JsonParserResultDetail::OK ||
!parse_result.first) {
LOG_WARN(
"failed to parse 'allow' field in filter configuration.");
return false;
}
LOG_DEBUG(parse_result.first.value());
auth_rule.allow_set.insert(parse_result.first.value());
return true;
})) {
LOG_WARN("failed to parse configuration for allow");
return false;
}
}
if (!parsePluginConfig(config, auth_rule.rule_config.config)) {
if (has_allow == config.end()) {
LOG_WARN("parse rule's config failed");
return false;
}
} else {
auth_rule.has_local_config = true;
}
if (!parseRouteMatchConfig(config, auth_rule.rule_config.routes)) {
LOG_WARN("failed to parse configuration for _match_route_");
return false;
}
if (!parseDomainMatchConfig(config, auth_rule.rule_config.hosts)) {
LOG_WARN("failed to parse configuration for _match_domain_");
return false;
}
auto no_route = auth_rule.rule_config.routes.empty();
auto no_host = auth_rule.rule_config.hosts.empty();
if ((no_route && no_host) || (!no_route && !no_host)) {
LOG_WARN(
"there is only one of '_match_route_' and '_match_domain_' can "
"present in configuration.");
return false;
}
if (!no_route) {
auth_rule.rule_config.category = CATEGORY::Route;
} else {
auth_rule.rule_config.category = CATEGORY::Host;
}
auth_rule_config_.push_back(std::move(auth_rule));
}
return true;
}
protected:
virtual bool parsePluginConfig(const json&, PluginConfig&) = 0;
private:
bool hostMatch(const RuleConfig& rule, std::string_view request_host) {
if (rule.hosts.empty()) {
// If no host specified, consider this rule applies to all host.
return true;
}
for (const auto& host_match : rule.hosts) {
const auto& host = host_match.second;
switch (host_match.first) {
case MATCH_TYPE::Suffix:
if (absl::EndsWith(
absl::string_view(request_host.data(), request_host.size()),
absl::string_view(host.data(), host.size()))) {
return true;
}
break;
case MATCH_TYPE::Prefix:
if (absl::StartsWith(
absl::string_view(request_host.data(), request_host.size()),
absl::string_view(host.data(), host.size()))) {
return true;
}
break;
case MATCH_TYPE::Exact:
if (request_host == host_match.second) {
return true;
}
break;
default:
LOG_WARN(absl::StrCat("unexpected host match pattern"));
return false;
}
}
return false;
}
bool parseRouteMatchConfig(const json& config,
std::unordered_set<std::string>& routes) {
return JsonArrayIterate(
config, "_match_route_", [&](const json& route) -> bool {
auto parse_result = JsonValueAs<std::string>(route);
if (parse_result.second != Wasm::Common::JsonParserResultDetail::OK ||
!parse_result.first) {
LOG_WARN(
"failed to parse '_match_route_' field in filter "
"configuration.");
return false;
}
routes.insert(parse_result.first.value());
return true;
});
}
bool parseDomainMatchConfig(
const json& config,
std::vector<std::pair<MATCH_TYPE, std::string>>& hosts) {
return JsonArrayIterate(
config, "_match_domain_", [&](const json& host) -> bool {
auto parse_result = JsonValueAs<std::string>(host);
if (parse_result.second != Wasm::Common::JsonParserResultDetail::OK ||
!parse_result.first) {
LOG_WARN(
"failed to parse '_match_domain_' field in filter "
"configuration.");
return false;
}
auto& host_str = parse_result.first.value();
std::pair<MATCH_TYPE, std::string> host_match;
if (absl::StartsWith(host_str, "*")) {
// suffix match
host_match.first = MATCH_TYPE::Suffix;
host_match.second = host_str.substr(1);
// if (absl::StartsWith(host_match.second, ".")) {
// host_match.second = host_match.second.substr(1);
// }
} else if (absl::EndsWith(host_str, "*")) {
// prefix match
host_match.first = MATCH_TYPE::Prefix;
host_match.second = host_str.substr(0, host_str.size() - 1);
// if (absl::EndsWith(host_match.second, ".")) {
// host_match.second = host_match.second.substr(
// 0, host_match.second.size() - 1);
// }
} else {
host_match.first = MATCH_TYPE::Exact;
host_match.second = host_str;
}
hosts.push_back(host_match);
return true;
});
}
bool invalid_config_ = false;
std::vector<RuleConfig> rule_config_;
std::vector<AuthRuleConfig> auth_rule_config_;
std::optional<PluginConfig> global_config_ = std::nullopt;
};