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MQTT（一）编译 mosquitto 和 mosquitto-

MQTT（一）编译 mosquitto 和 mosquitto-

作者: 蓝笔头 | 来源:发表于2021-07-02 10:07 被阅读0次

（一）编译安装 mosquitto

1）下载 mosquitto 项目

$ git clone git@github.com:eclipse/mosquitto.git

2）导入 CLion 进行编译

  • 2.1）【Reload CMake Project】


或者


【出现如下问题】

（问题1）：找不到 openssl

CMake Error at /usr/share/cmake-3.7/Modules/FindPackageHandleStandardArgs.cmake:138 (message):
  Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the
  system variable OPENSSL_ROOT_DIR (missing: OPENSSL_LIBRARIES
  OPENSSL_INCLUDE_DIR)

解决方法: 安装 openssl

sudo apt-get install libssl-dev

（问题 2）：xsltproc not found

CMake Error at man/CMakeLists.txt:29 (message):
  xsltproc not found: manpages cannot be built

解决方法，安装 xsltproc：

sudo apt install xsltproc
  • 2.2）编译并运行 mosquitto

控制台输出：

/tmp/tmp.rcJYQzXv2I/cmake-build-debug/src/mosquitto
1625147367: mosquitto version 2.0.11 starting
1625147367: Using default config.
1625147367: Starting in local only mode. Connections will only be possible from clients running on this machine.
1625147367: Create a configuration file which defines a listener to allow remote access.
1625147367: For more details see https://mosquitto.org/documentation/authentication-methods/
1625147367: Opening ipv4 listen socket on port 1883.
1625147367: Opening ipv6 listen socket on port 1883.
1625147367: Error: Cannot assign requested address
1625147367: mosquitto version 2.0.11 running
  • 2.3）编译并运行 mosquitto_sub

控制台输出：

/tmp/tmp.rcJYQzXv2I/cmake-build-debug/client/mosquitto_sub
Error: You must specify a topic to subscribe to.

Use 'mosquitto_sub --help' to see usage.
  • 2.4）编译并运行 mosquitto_pub

控制台输出：

/tmp/tmp.rcJYQzXv2I/cmake-build-debug/client/mosquitto_pub
Error: Both topic and message must be supplied.
mosquitto_pub is a simple mqtt client that will publish a message on a single topic and exit.
mosquitto_pub version 2.0.11 running on libmosquitto 2.0.11.

Usage: mosquitto_pub {[-h host] [--unix path] [-p port] [-u username] [-P password] -t topic | -L URL}
... # 省略

（二）测试 mosquitto

1）启动 mosquitto 进程

$ /tmp/tmp.rcJYQzXv2I/cmake-build-debug/src/mosquitto
1625147433: mosquitto version 2.0.11 starting
1625147433: Using default config.
1625147433: Starting in local only mode. Connections will only be possible from clients running on this machine.
1625147433: Create a configuration file which defines a listener to allow remote access.
1625147433: For more details see https://mosquitto.org/documentation/authentication-methods/
1625147433: Opening ipv4 listen socket on port 1883.
1625147433: Opening ipv6 listen socket on port 1883.
1625147433: Error: Cannot assign requested address
1625147433: mosquitto version 2.0.11 running

2）通过 mosquitto_sub 命令订阅 test 主题

$ /tmp/tmp.rcJYQzXv2I/cmake-build-debug/client/mosquitto_sub -t test

3）通过 mosquitto_pub 命令给 test 主题发送 abc 消息

$ /tmp/tmp.rcJYQzXv2I/cmake-build-debug/client/mosquitto_pub -t test -m abc

5）mosquitto_sub 进程收到 mosquitto_pub 命令发送到 test 主题的消息

（三）编译 mosquitto-auth-plug

1）下载 mosquitto-auth-plug 项目

$ git clone git@github.com:jpmens/mosquitto-auth-plug.git

2）导入 CLion 进行编译

  • 2.1）config.mk.in 重命名为 config.mk 
# 下载 `mosquitto v1.5.11` 的源码
$  wget --no-check-certificate https://github.com/eclipse/mosquitto/archive/refs/tags/v1.5.11.zip

# 解压 /v1.5.11.zip 压缩文件
$ unzip /v1.5.11.zip

# 查看 mosquitto-1.4.12 解压路径
$ cd mosquitto-1.5.11/
$ pwd
/home/meikai/mosquitto-1.5.11
  • 2.2）修改 ``config.mk` 文件，修改后的内容如下所示：
# Select your backends from this list
BACKEND_CDB ?= no
BACKEND_MYSQL ?= no
BACKEND_SQLITE ?= no
BACKEND_REDIS ?= yes
BACKEND_POSTGRES ?= no
BACKEND_LDAP ?= no
BACKEND_HTTP ?= no
BACKEND_JWT ?= no
BACKEND_MONGO ?= no
BACKEND_FILES ?= no
BACKEND_MEMCACHED ?= no

# Specify the path to the Mosquitto sources here
# MOSQUITTO_SRC = /usr/local/Cellar/mosquitto/1.4.12
MOSQUITTO_SRC = /home/meikai/mosquitto-1.5.11

# Specify the path the OpenSSL here
OPENSSLDIR = /usr

# Add support for django hashers algorithm name
SUPPORT_DJANGO_HASHERS ?= no

# Specify optional/additional linker/compiler flags here
# On macOS, add
#   CFG_LDFLAGS = -undefined dynamic_lookup
# as described in https://github.com/eclipse/mosquitto/issues/244
#
# CFG_LDFLAGS = -undefined dynamic_lookup  -L/usr/local/Cellar/openssl/1.0.2l/lib
# CFG_CFLAGS = -I/usr/local/Cellar/openssl/1.0.2l/include -I/usr/local/Cellar/mosquitto/1.4.12/include
CFG_LDFLAGS =
CFG_CFLAGS =

以上配置基本上都是默认配置，仅修改如下三项：

 # 取消 mysql 后端的配置
BACKEND_MYSQL ?= no
 # 配置为 redis 后端
BACKEND_REDIS ?= yes

#  配置为 mosquitto-1.5.11 的路径
MOSQUITTO_SRC = /home/meikai/mosquitto-1.5.11

  • 3）【Build Project】


【构建错误修复】

（问题1）缺少 hiredis 包

be-redis.c:38:29: fatal error: hiredis/hiredis.h: No such file or directory
 #include <hiredis/hiredis.h>

解决方法，安装 libhiredis-dev：

sudo apt install libhiredis-dev

（问题2）ld 找不到要链接的 libmosquitto

/usr/bin/ld: cannot find -lmosquitto
collect2: error: ld returned 1 exit status
Makefile:160: recipe for target 'auth-plug.so' failed
make: *** [auth-plug.so] Error 1

解决方法，安装 libmosquitto-dev

$ sudo apt install libmosquitto-dev

查看安装的 libmosquitto.so

# 查看 ld 的搜索路径
$ ld --verbose | grep SEARCH
SEARCH_DIR("=/usr/local/lib/x86_64-linux-gnu"); SEARCH_DIR("=/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib64"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib");

# 在 /usr/lib/x86_64-linux-gnu 中可以找到 libmosquitto.so
$ cd /usr/lib/x86_64-linux-gnu
$ ls -al | grep mosquitto
lrwxrwxrwx  1 root root       17 Feb 13  2019 libmosquitto.so -> libmosquitto.so.1
-rw-r--r--  1 root root    64504 Feb 13  2019 libmosquitto.so.1

至此，编译成功：

====================[ Build | all ]=============================================
make --jobs=3 all
cc  -I/home/meikai/mosquitto-1.5.11/src/ -I/home/meikai/mosquitto-1.5.11/lib/ -fPIC -Wall -Werror  -DBE_REDIS  -I/usr/local/include/hiredis -I/src -DDEBUG=1 -I/usr/include   -L/usr/local/lib -L/home/meikai/mosquitto-1.5.11/lib/ -fPIC -shared -o auth-plug.so auth-plug.o base64.o pbkdf2-check.o log.o envs.o hash.o be-psk.o backends.o cache.o be-redis.o   -lhiredis -L/usr/lib -lcrypto -lmosquitto
Selected backends:          Redis
Using mosquitto source dir: /home/meikai/mosquitto-1.5.11
OpenSSL install dir:        /usr

If you changed the backend selection, you might need to 'make clean' first

CFLAGS:   -I/home/meikai/mosquitto-1.5.11/src/ -I/home/meikai/mosquitto-1.5.11/lib/ -fPIC -Wall -Werror  -DBE_REDIS  -I/usr/local/include/hiredis -I/src -DDEBUG=1 -I/usr/include
LDFLAGS:   -L/usr/local/lib -L/home/meikai/mosquitto-1.5.11/lib/
LDADD:    -lhiredis -L/usr/lib -lcrypto -lmosquitto


Process finished with exit code 0

4）查看编译后的 auth-plug.so 文件

$ cd /tmp/tmp.dHVBlwblW0/
$ ls -al | grep so
-rwxr-xr-x  1 meikai meikai 61584 Jul  1 22:36 auth-plug.so

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