JWT 学习

开源代码地址：https://github.com/pokowaka/jwt-cpp

由于cmake不熟悉，添加如下makefile进行编译验证

 1 BASE_CPP = g++
 2 BASE_CC = gcc
 3 CPPFLAGS += -std=c++11 -Wall -Isrc/include
 4 LDFLAGS += -lcrypto
 5 #Q:=@
 6 
 7 TARGET = sign validate rsaSign
 8 TARGET_DIR ?= obj
 9 TARGET_SRC_DIR = samples
10 
11 SRC_DIRS = src/base64 src/jwt src/validators src/validators/claims
12 
13 #$(info "--1---TARGET=[$(TARGET)] [$(TARGET:%=$(TARGET_DIR)/%.dpp)]")
14 
15 .PHONY:all build clean
16 
17 CPP_SRCS := $(CPP_SRCS) $(wildcard *.cpp)
18 C_SRCS := $(C_SRCS) $(wildcard *.c)
19 CPP_DEP_FILES = $(CPP_SRCS:%.cpp=$(TARGET_DIR)/%.dpp) $(TARGET:%=$(TARGET_DIR)/%.dpp)
20 C_DEP_FILES = $(C_SRCS:%.c=$(TARGET_DIR)/%.d)
21 #$(info "--1---CPP_DEP_FILES=[$(CPP_DEP_FILES)]")
22 
23 ### search target src cpp dir ####
24 vpath %.cpp $(TARGET_SRC_DIR)
25 ifneq ($(SRC_DIRS),)
26   CPP_SRCS := $(CPP_SRCS) $(notdir $(wildcard $(SRC_DIRS:%=%/*.cpp)))
27   vpath %.cpp $(SRC_DIRS:%=% : )
28   C_SRCS := $(C_SRCS) $(notdir $(wildcard $(SRC_DIRS:%=%/*.c)))
29   vpath %.c $(SRC_DIRS:%=% : )
30 endif
31 
32 OBJS = $(CPP_SRCS:%.cpp=%.o) $(C_SRCS:%.c=%.o)
33 TARGET_DIRS = $(TARGET_DIR) $($(dir $(CPP_SRCS)):%=$(TARGET_DIR)/%) $($(dir $(C_SRCS)):%=$(TARGET_DIR)/%)
34 OBJ_DEPS = $(OBJS:%.o=$(TARGET_DIR)/%.lo)
35 #$(info "--2---CPP_DEP_FILES=[$(CPP_DEP_FILES)]")
36 
37 all: build
38     $(Q)echo "complete!!"
39 
40 build: $(TARGET_DIR) $(TARGET)
41 
42 $(sort $(TARGET_DIRS)):
43     mkdir -p $@
44 
45 ##### multi target rules ########
46 $(TARGET):%:$(OBJ_DEPS) $(TARGET_DIR)/%.lo
47     $(Q)echo "Linking $(@F)"
48     $(Q)$(BASE_CPP) -o $@ $(TARGET_DIR)/$(@F).lo $(OBJ_DEPS) $(LDFLAGS)
49 
50 $(TARGET_DIR)/%.lo: %.cpp
51     $(Q)echo "Compiling $<"
52     $(Q)$(BASE_CPP) -o $@ -c $< $(CPPFLAGS) -MMD -MP -MT $@ -MF $(basename $@).dpp
53 
54 $(TARGET_DIR)/%.lo: %.c
55     $(Q)echo "Compiling $<"
56     $(Q)$(BASE_CC) -o $@ -c $< $(CFLAGS) -MMD -MP -MT $@ -MF $(basename $@).d
57 
58 -include $(CPP_DEP_FILES) $(C_DEP_FILES)
59 
60 clean:
61     $(Q)-rm -rf $(TARGET_DIR)
62     $(Q)-rm -f $(TARGET)

执行编译遇到如下错误

 1 Compiling samples/validate.cpp
 2 g++ -o obj/validate.lo -c samples/validate.cpp -std=c++11 -Wall -Isrc/include -MMD -MP -MT obj/validate.lo -MF obj/validate.dpp
 3 In file included from /usr/include/c++/4.8.2/functional:55:0,
 4                  from /usr/include/c++/4.8.2/memory:79,
 5                  from src/include/jwt/allocators.h:25,
 6                  from src/include/jwt/jwt_all.h:25,
 7                  from samples/validate.cpp:2:
 8 /usr/include/c++/4.8.2/tuple: In instantiation of ‘constexpr std::_Head_base<_Idx, _Head, false>::_Head_base() [with long unsigned int _Idx = 1ul; _Head = nlohmann::basic_json<>&]’:
 9 /usr/include/c++/4.8.2/tuple:253:29:   required from ‘constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl() [with long unsigned int _Idx = 1ul; _Head = nlohmann::basic_json<>&; _Tail = {}]’
10 /usr/include/c++/4.8.2/type_traits:706:28:   required from ‘struct std::__is_default_constructible_impl<std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&> >’
11 /usr/include/c++/4.8.2/type_traits:116:12:   required from ‘struct std::__and_<std::__not_<std::is_void<std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&> > >, std::__is_default_constructible_impl<std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&> > >’
12 /usr/include/c++/4.8.2/type_traits:721:12:   required from ‘struct std::__is_default_constructible_atom<std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&> >’
13 /usr/include/c++/4.8.2/type_traits:742:12:   required from ‘struct std::__is_default_constructible_safe<std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&>, false>’
14 /usr/include/c++/4.8.2/type_traits:748:12:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
15 src/include/jwt/json.hpp:958:23:   required from ‘constexpr const bool nlohmann::detail::has_from_json<nlohmann::basic_json<>, std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&>, void>::value’
16 src/include/jwt/json.hpp:15380:45:   required by substitution of ‘template<class T, class U> using get_template_function = decltype (declval<T>().get<U>()) [with T = const nlohmann::basic_json<>&; U = const std::_Tuple_impl<1ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&>]’
17 src/include/jwt/json.hpp:15684:1:   required from ‘constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl(const _Head&, const _Tail& ...) [with long unsigned int _Idx = 0ul; _Head = nlohmann::basic_json<>&; _Tail = {nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&}]’
18 /usr/include/c++/4.8.2/tuple:533:30:   required from ‘constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&) [with _T1 = nlohmann::basic_json<>&; _T2 = nlohmann::basic_json<>&]’
19 /usr/include/c++/4.8.2/tuple:1045:44:   required from ‘std::tuple<_Elements& ...> std::tie(_Elements& ...) [with _Elements = {nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>}]’
20 samples/validate.cpp:19:33:   required from here
21 /usr/include/c++/4.8.2/tuple:132:22: error: value-initialization of reference type ‘nlohmann::basic_json<>&’
22        : _M_head_impl() { }
23                       ^
24 /usr/include/c++/4.8.2/tuple: In instantiation of ‘constexpr std::_Head_base<_Idx, _Head, false>::_Head_base() [with long unsigned int _Idx = 0ul; _Head = nlohmann::basic_json<>&]’:
25 /usr/include/c++/4.8.2/type_traits:706:28:   required from ‘struct std::__is_default_constructible_impl<std::_Head_base<0ul, nlohmann::basic_json<>&, false> >’
26 /usr/include/c++/4.8.2/type_traits:116:12:   required from ‘struct std::__and_<std::__not_<std::is_void<std::_Head_base<0ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&, false> > >, std::__is_default_constructible_impl<std::_Head_base<0ul, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&, false> > >’
27 /usr/include/c++/4.8.2/type_traits:721:12:   required from ‘struct std::__is_default_constructible_atom<std::_Head_base<0ul, nlohmann::basic_json<>&, false> >’
28 /usr/include/c++/4.8.2/type_traits:742:12:   required from ‘struct std::__is_default_constructible_safe<std::_Head_base<0ul, nlohmann::basic_json<>&, false>, false>’
29 /usr/include/c++/4.8.2/type_traits:748:12:   required from ‘struct std::is_default_constructible<std::_Head_base<0ul, nlohmann::basic_json<>&, false> >’
30 src/include/jwt/json.hpp:1156:44:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
31 src/include/jwt/json.hpp:958:23:   required from ‘constexpr const bool nlohmann::detail::has_from_json<nlohmann::basic_json<>, std::_Head_base<0ul, nlohmann::basic_json<>&, false>, void>::value’
32 src/include/jwt/json.hpp:15380:45:   required by substitution of ‘template<class T, class U> using get_template_function = decltype (declval<T>().get<U>()) [with T = const nlohmann::basic_json<>&; U = const std::_Head_base<0ul, nlohmann::basic_json<>&, false>]’
33 src/include/jwt/json.hpp:15684:1:   required from ‘constexpr std::_Tuple_impl<_Idx, _Head, _Tail ...>::_Tuple_impl(const _Head&, const _Tail& ...) [with long unsigned int _Idx = 0ul; _Head = nlohmann::basic_json<>&; _Tail = {nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>&}]’
34 /usr/include/c++/4.8.2/tuple:533:30:   required from ‘constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&) [with _T1 = nlohmann::basic_json<>&; _T2 = nlohmann::basic_json<>&]’
35 /usr/include/c++/4.8.2/tuple:1045:44:   required from ‘std::tuple<_Elements& ...> std::tie(_Elements& ...) [with _Elements = {nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>, nlohmann::basic_json<std::map, std::vector, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long int, long unsigned int, double, std::allocator, nlohmann::adl_serializer>}]’
36 samples/validate.cpp:19:33:   required from here
37 /usr/include/c++/4.8.2/tuple:132:22: error: value-initialization of reference type ‘nlohmann::basic_json<>&’
38 make: *** [obj/validate.lo] Error 1

经咨询C++牛人朋友凯歌是validate.cpp tie make_tuple 返回赋值是C++14 才支持的特性，我当前用的编译器version 是4.8.2 还不支持，需要升级gcc版本，朋友推荐网址如下

https://www.vpser.net/manage/centos-6-upgrade-gcc.html

https://gcc.gnu.org/projects/cxx-status.html#cxx14

gcc升级到6.3.1-3后果然编译通过，非常感谢这位C++牛人

验证rsaSign添加如下代码

 1 #include <iostream>
 2 #include "jwt/jwt_all.h"
 3 using json = nlohmann::json;
 4 using namespace std;
 5 
 6 const char *pubkey = 
 7     "-----BEGIN PUBLIC KEY-----\n"
 8     "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7ZveLF8NEMmjQHcnZwXX\n"
 9     "f2Z2IL2e47t2oQvFO4AqkKIRp2aQ+t66cRFzzk7QBJKePkq9q9VFtapJCXcMKyp/\n"
10     "CVToJP9WdF7uavt6e6p9a87ZcLhsXYwj6BdQT0+dkV8wppPCdN5miGxkn+Zi2BUP\n"
11     "41PIIu/s0EkSSnqkBp6FOKMWnxqZrE6ZApPZBgfrupHJ+UeskscfKXBSvfGdJDkb\n"
12     "JemFlMu38nkh1wnels+eRxs4IUbYlJjMmLnQa7N0mLUQSl3RJP+/VsYxE6EcshVD\n"
13     "J6jRatuaZilWrpzo2DXI6RoliqQ2b7XFyBthURxFh2ViKNTGj51KuEPder6yhJVS\n"
14     "6QIDAQAB\n"
15     "-----END PUBLIC KEY-----";
16 
17 const char *privkey = 
18     "-----BEGIN RSA PRIVATE KEY-----\n"
19     "-----END RSA PRIVATE KEY-----";
20 
21 int main() {
22     // Setup a signer
23     RS256Validator signer(pubkey, privkey);
24 
25     // Create the json payload that expires 01/01/2017 @ 12:00am (UTC)
26     // json payload = {{"sub", "subject"}, {"exp", 1483228800}};
27     json payload = {{"installationParam", {{{"indoorDeployment", false},{"heightType", "AGL"},{"latitude", 68.53534},{"antennaModel", "External"},{"antennaGain", 0},{"longitude", -158.53972},{"height", 0}}}}, {"fccId","2AG32EG7010A"},{"cbsdSerialNumber","1202000240194DP0032"},{"professionalInstallerData", {{{"cpiId","cpi123"},{"cpiName","CPI_User_123"},{"installCertificationTime","2019-07-15T00:00:00Z"}}}}};
28 
29     // Let's encode the token to a string
30     auto token = JWT::Encode(signer, payload);
31 
32     std::cout << token << std::endl;
33 }

生成如下token=eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJjYnNkU2VyaWFsTnVtYmVyIjoiMTIwMjAwMDI0MDE5NERQMDAzMiIsImZjY0lkIjoiMkFHMzJFRzcwMTBBIiwiaW5zdGFsbGF0aW9uUGFyYW0iOlt7ImFudGVubmFHYWluIjowLCJhbnRlbm5hTW9kZWwiOiJFeHRlcm5hbCIsImhlaWdodCI6MCwiaGVpZ2h0VHlwZSI6IkFHTCIsImluZG9vckRlcGxveW1lbnQiOmZhbHNlLCJsYXRpdHVkZSI6NjguNTM1MzQsImxvbmdpdHVkZSI6LTE1OC41Mzk3Mn1dLCJwcm9mZXNzaW9uYWxJbnN0YWxsZXJEYXRhIjpbeyJjcGlJZCI6ImNwaTEyMyIsImNwaU5hbWUiOiJDUElfVXNlcl8xMjMiLCJpbnN0YWxsQ2VydGlmaWNhdGlvblRpbWUiOiIyMDE5LTA3LTE1VDAwOjAwOjAwWiJ9XX0.vXsgXZoLelOZMpmVlKTZeTDRReiiLcOUB5XEQrcYTxpGzT1hn3_5TGkjudsG4zavMuHfXLsIJfiPsJJrACfzu0kJUrYjJKGIGwotv05Sf-_deOFHZQgFX-qkrCaAEio6bcqGZltlDRJUjjubd13NMg-56HMEIOwDVssr4Gjq674v70XnpSxkTMHhpnob2p-B39nsWJWfplS278OgOdEcTGJdUfWhhCc9h4A9qttr3p07y3ri-o1C2lfSqpNMAMWTiJ8en1vHN7EwTaBv_aLP9NboKkW2nIiy8NcIp2q9rFL692DYPQ_yEgKtkGmO4MNkpMP7YB3wOF1CI7qQ-WbVHg

在jwt.io网址上验证可以通过。

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