【区块链】Fabric CA源码和镜像编译

原文网址：https://blog.csdn.net/zhayujie5200/article/details/80221361

前言

之前使用CA服务一直是在docker容器中运行下载好的CA镜像，在应用程序中通过Node SDK中集成的接口来访问CA服务器，这次尝试手动部署CA服务;
Fabric CA由服务端和客户端组件组成，CA服务端(fabric-ca-server）可以看作一个web服务，执行了Go代码编译生成的二进制文件后，会监听一个端口，处理收到的请求;
CA客户端（fabric-ca-client）其实就是一个向CA服务端发送请求的程序，执行编译成的二进制文件并带上不同参数，可以向CA服务器发送相应的http请求，完成一系列操作。

准备工作

安装Go语言并配置好GOPATH环境变量，下载并配置docker
安装libtool和libtdhl-dev
```
sudo apt install libtool libltdl-dev
```

通过命令行安装和启动CA

直接从github下载并编译

go get -u github.com/hyperledger/fabric-ca/cmd/fabric-ca-server
go get -u github.com/hyperledger/fabric-ca/cmd/fabric-ca-client

go get命令会自动获取源码并编译至$GOPATH/bin，我的目录是~/go/bin，目录下出现编译好的二进制可执行文件fabric-ca-server和fabric-ca-client

接着初始化和启动fabric-ca-server，需要设置一个管理员用户的名称和密码
```
fabric-ca-server init -b admin:adminpw                 
fabric-ca-server start -b admin:adminpw
```
在这里报错了panic: Version is not set for fabric-ca library，可能与下载的v1.1版本的fabric-ca有关系。

手动编译生成

既然直接从github下载的版本出现错误，可以选择自己去编译生成指定版本的fabric-ca-server。
首先下载fabric-ca源码并切换至相应版本：
```
git clone https://github.com/hyperledger/fabric-ca.git
```

然后在fabric-ca目录下进行编译

make fabric-ca-server
make fabric-ca-client

cd /home/admin/gocode/src/github.com/hyperledger/fabric-ca/bin

会在.../fabric-ca/bin目录下生成fabric-ca-server和fabric-ca-client。

接着进入bin目录对CA服务端进行初始化：

fabric-ca-server init -b admin:adminpw

初始化后在目录下生成

msp ：包含keystore，CA服务器的私钥
ca-cert.pem ：CA服务端的证书
fabric-ca-server.db ：CA默认使用的嵌入型数据库 SQLite
fabric-ca-server-config.yaml ：CA服务端的配置文件

接着启动CA服务器

fabric-ca-server start -b admin:adminpw

CA server开始监听，默认监听地址为http://0.0.0.0:7054。如果直接执行start命令则会自动先进行初始化init然后启动服务开始监听。

通过docker镜像安装和启动CA

docker镜像中同时包含了fabric-ca-server和fabric-ca-client

直接下载fabric-ca镜像
首先可以选择从Docker Hub直接下载fabric-ca镜像：
```
docker pull hyperledger/fabric-ca:x86_64-1.1.0
```
利用docker-compose.yml文件来启动镜像，配置文件在.../fabric-ca/docker/server中，进入该目录后启动：
```
docker-compose up
```
即可启动ca容器，如果镜像不存在还会主动拉取镜像，在.../server/fabric-ca-server目录中会生成上述的配置文件（这是利用docker-compose.yml文件设置的映射），证书私钥，数据库文件等，并且开始监听一个端口。
手动编译docker镜像
除了直接从Docker Hub拉取fabric-ca镜像，还可以通过源码编译生成镜像。
在fabric-ca目录下执行：
```
make docker
```
会生成四个镜像fabric-ca，fabric-ca-tool，fabric-ca-peer ，fabric-ca-orderer，镜像保存在.../fabric-ca/build/image中，之后和上面的方法相同根据docker-compose.yml文件启动ca节点。

Fabric CA的使用

访问Fabric CA服务端的方法有两种：通过客户端工具（fabric-ca-client）和RESTful接口。本质上，客户端工具也是调用服务端的RESTful接口实现的。这里采用客户端工具的方法来进行访问。

首先按照上述步骤初始化和启动CA服务器（执行fabric-ca-server或启动CA容器），如果已经下载fabric-ca-client，那移动到相应目录下即可开始操作（若已添加至环境变量则不用）。

如果是以docker容器方式运行CA服务器且未下载客户端工具，可以进入容器内部进行测试（ca镜像集成了服务端和客户端组件），二进制文件放在/usr/local/bin且已经添加环境变量，进入方法为：

docker exec -it fabric-ca-server bash

这里选择运行编译好的可执行文件的方法，首先在一个终端下启动CA服务器：

fabric-ca-server start -b admin:adminpw

在另一个终端操作CA客户端。首先需要注册（enroll）启动时设置的管理员用户, 注册前需要设置证书存储目录的环境变量：

export FABRIC_CA_CLIENT_HOME=$HOME/ca
fabric-ca-client enroll -u http://admin:adminpw@localhost:7054

可以发现~/ca目录下生成了一个fabric-ca-client-config.yaml配置文件，以及msp目录，包含管理员的证书和私钥。

有了已经enroll成功的admin用户，接下来将admin作为登记员（Registrar）来登记(register)一个新用户：

fabric-ca-client register --id.name Jim --id.type user --id.affiliation org1.department1 --id.attrs 'hf.Revoker=true,foo=bar'

[root@localhost admin]# fabric-ca-client register --id.name Jim --id.type user --id.affiliation org1.department1 --id.attrs 'hf.Revoker=true,foo=bar'
2018/06/14 07:24:45 [INFO] Configuration file location: /root/ca/fabric-ca-client-config.yaml
Password: iQEoXaLRWmNL

客户端可以接收到一个密码，用这个注册密码来注册（enroll）用户：

fabric-ca-client enroll -u http://Jim:iQEoXaLRWmNL@localhost:7054 -M $FABRIC_CA_CLIENT_HOME/Jim

这样一个新用户就注册成功了，获取了属于自己的证书和私钥。

总结

总结一下，手动部署CA服务可以分为两类方法：

一种方法是在命令行直接运行编译过后的可执行文件，可以通过go get命令自动获取并编译（最新版本有报错），也可以手动获取源码，切换版本后再进行编译; 然后在命令行中初始化和启动CA服务器;
另一种方法是在容器中运行docker镜像，镜像中包含编译好的可执行文件，镜像可以从Docker Hub直接下载，也可以在fabric-ca目录下利用make docker手动编译，然后利用docker-compose启动CA容器。

最后查看相关文件内容或者树结构

cd /home/admin/gocode/src/github.com/hyperledger/fabric-ca/bin

 1 [root@localhost bin]# tree -F
 2 .
 3 ├── ca-cert.pem
 4 ├── fabric-ca-client*
 5 ├── fabric-ca-server*
 6 ├── fabric-ca-server-config.yaml
 7 ├── fabric-ca-server.db
 8 └── msp/
 9     └── keystore/
10         └── 73c8509d3f8b33d60ba9825a0ddeb10dc6a12fb22fc8912c7661e7a639baac0c_sk*
11 
12 2 directories, 6 files

gedit fabric-ca-server-config.yaml

# Version of config file
version: 1.1.1-snapshot-e656889
# Server's listening port (default: 7054)
port: 7054
# Enables debug logging (default: false)
debug: false
# Size limit of an acceptable CRL in bytes (default: 512000)
crlsizelimit: 512000
tls:
  # Enable TLS (default: false)
  enabled: false
  # TLS for the server's listening port
  certfile:
  keyfile:
  clientauth:
    type: noclientcert
    certfiles:
ca:
  # Name of this CA
  name:
  # Key file (is only used to import a private key into BCCSP)
  keyfile:
  # Certificate file (default: ca-cert.pem)
  certfile:
  # Chain file
  chainfile:
crl:
  # Specifies expiration for the generated CRL. The number of hours
  # specified by this property is added to the UTC time, the resulting time
  # is used to set the 'Next Update' date of the CRL.
  expiry: 24h
registry:
  # Maximum number of times a password/secret can be reused for enrollment
  # (default: -1, which means there is no limit)
  maxenrollments: -1
  # Contains identity information which is used when LDAP is disabled
  identities:
     - name: admin
       pass: adminpw
       type: client
       affiliation: ""
       attrs:
          hf.Registrar.Roles: "peer,orderer,client,user"
          hf.Registrar.DelegateRoles: "peer,orderer,client,user"
          hf.Revoker: true
          hf.IntermediateCA: true
          hf.GenCRL: true
          hf.Registrar.Attributes: "*"
          hf.AffiliationMgr: true
db:
  type: sqlite3
  datasource: fabric-ca-server.db
  tls:
      enabled: false
      certfiles:
      client:
        certfile:
        keyfile:
ldap:
   # Enables or disables the LDAP client (default: false)
   # If this is set to true, the "registry" section is ignored.
   enabled: false
   # The URL of the LDAP server
   url: ldap://<adminDN>:<adminPassword>@<host>:<port>/<base>
   # TLS configuration for the client connection to the LDAP server
   tls:
      certfiles:
      client:
         certfile:
         keyfile:
   # Attribute related configuration for mapping from LDAP entries to Fabric CA attributes
   attribute:
      # 'names' is an array of strings containing the LDAP attribute names which are
      # requested from the LDAP server for an LDAP identity's entry
      names: ['uid','member']
      converters:
         - name:
           value:
      maps:
         groups:
            - name:
              value:
affiliations:
   org1:
      - department1
      - department2
   org2:
      - department1
signing:
    default:
      usage:
        - digital signature
      expiry: 8760h
    profiles:
      ca:
         usage:
           - cert sign
           - crl sign
         expiry: 43800h
         caconstraint:
           isca: true
           maxpathlen: 0
      tls:
         usage:
            - signing
            - key encipherment
            - server auth
            - client auth
            - key agreement
         expiry: 8760h
csr:
   cn: fabric-ca-server
   names:
      - C: US
        ST: "North Carolina"
        L:
        O: Hyperledger
        OU: Fabric
   hosts:
     - localhost.localdomain
     - localhost
   ca:
      expiry: 131400h
      pathlength: 1
bccsp:
    default: SW
    sw:
        hash: SHA2
        security: 256
        filekeystore:
            # The directory used for the software file-based keystore
            keystore: msp/keystore
cacount:
cafiles:
intermediate:
  parentserver:
    url:
    caname:
  enrollment:
    hosts:
    profile:
    label:
  tls:
    certfiles:
    client:
      certfile:
      keyfile:

tree -L 1 fabric-ca

 1 ├── api
 2 ├── bin
 3 ├── CHANGELOG.md
 4 ├── ci.properties
 5 ├── cmd
 6 ├── CODE_OF_CONDUCT.md
 7 ├── CONTRIBUTING.md
 8 ├── docker
 9 ├── docker-env.mk
10 ├── docs
11 ├── images
12 ├── lib
13 ├── LICENSE
14 ├── MAINTAINERS.md
15 ├── Makefile
16 ├── README.md
17 ├── release_notes
18 ├── scripts
19 ├── swagger
20 ├── test
21 ├── testdata
22 ├── util
23 └── vendor

fabric-ca-server-config.yaml

  1 # Version of config file
  2 version: 1.1.1-snapshot-e656889
  3 
  4 # Server's listening port (default: 7054)
  5 port: 7054
  6 
  7 # Enables debug logging (default: false)
  8 debug: false
  9 
 10 # Size limit of an acceptable CRL in bytes (default: 512000)
 11 crlsizelimit: 512000
 12 
 13 tls:
 14   # Enable TLS (default: false)
 15   enabled: false
 16   # TLS for the server's listening port
 17   certfile:
 18   keyfile:
 19   clientauth:
 20     type: noclientcert
 21     certfiles:
 22 
 23 ca:
 24   # Name of this CA
 25   name:
 26   # Key file (is only used to import a private key into BCCSP)
 27   keyfile:
 28   # Certificate file (default: ca-cert.pem)
 29   certfile:
 30   # Chain file
 31   chainfile:
 32 
 33 
 34 crl:
 35   expiry: 24h
 36 
 37 
 38 registry:
 39   # Maximum number of times a password/secret can be reused for enrollment
 40   # (default: -1, which means there is no limit)
 41   maxenrollments: -1
 42 
 43   # Contains identity information which is used when LDAP is disabled
 44   identities:
 45      - name: admin
 46        pass: adminpw
 47        type: client
 48        affiliation: ""
 49        attrs:
 50           hf.Registrar.Roles: "peer,orderer,client,user"
 51           hf.Registrar.DelegateRoles: "peer,orderer,client,user"
 52           hf.Revoker: true
 53           hf.IntermediateCA: true
 54           hf.GenCRL: true
 55           hf.Registrar.Attributes: "*"
 56           hf.AffiliationMgr: true
 57 
 58 
 59 db:
 60   type: sqlite3
 61   datasource: fabric-ca-server.db
 62   tls:
 63       enabled: false
 64       certfiles:
 65       client:
 66         certfile:
 67         keyfile:
 68 
 69 
 70 ldap:
 71    # Enables or disables the LDAP client (default: false)
 72    # If this is set to true, the "registry" section is ignored.
 73    enabled: false
 74    # The URL of the LDAP server
 75    url: ldap://<adminDN>:<adminPassword>@<host>:<port>/<base>
 76    # TLS configuration for the client connection to the LDAP server
 77    tls:
 78       certfiles:
 79       client:
 80          certfile:
 81          keyfile:
 82    # Attribute related configuration for mapping from LDAP entries to Fabric CA attributes
 83    attribute:
 84       names: ['uid','member']
 85       converters:
 86          - name:
 87            value:
 88       maps:
 89          groups:
 90             - name:
 91               value:
 92 affiliations:
 93    org1:
 94       - department1
 95       - department2
 96    org2:
 97       - department1
 98 signing:
 99     default:
100       usage:
101         - digital signature
102       expiry: 8760h
103     profiles:
104       ca:
105          usage:
106            - cert sign
107            - crl sign
108          expiry: 43800h
109          caconstraint:
110            isca: true
111            maxpathlen: 0
112       tls:
113          usage:
114             - signing
115             - key encipherment
116             - server auth
117             - client auth
118             - key agreement
119          expiry: 8760h
120 csr:
121    cn: fabric-ca-server
122    names:
123       - C: US
124         ST: "North Carolina"
125         L:
126         O: Hyperledger
127         OU: Fabric
128    hosts:
129      - localhost.localdomain
130      - localhost
131    ca:
132       expiry: 131400h
133       pathlength: 1
134 bccsp:
135     default: SW
136     sw:
137         hash: SHA2
138         security: 256
139         filekeystore:
140             # The directory used for the software file-based keystore
141             keystore: msp/keystore
142 cacount:
143 cafiles:
144
145 intermediate:
146   parentserver:
147     url:
148     caname:
149 
150   enrollment:
151     hosts:
152     profile:
153     label:
154   tls:
155     certfiles:
156     client:
157       certfile:
158       keyfile:

笔记，万变不离。