Mosquitto Auth Plugin with Openssl issue on raspberry pi - authentication

Question

I have first created a user for mosquitto:
sudo adduser --system -no-create-home mosquitto
Then I installed some dependencies:
sudo apt-get install libc-ares-dev libcurl4-openssl-dev libmysqlclient-dev
Then I installed mosquitto:
wget http://mosquitto.org/files/source/mosquitto-1.3.5.tar.gz //download mosquitto-1.3.5
tar xvzf mosquitto-1.3.5.tar.gz //unzip tar file
Then cd mosquitto-1.3.5
Then I put config.mk in edit mode using
sudo nano config.mk
Then I searched for SRV by pressing Ctrl + W
Changed With_SRV:=no
Ctrl + O followed by Enter to save
Ctrl + X to exit out of file
Now I need to install Openssl to build mosquitto.
So I installed Openssl using this command:
wget http://www.openssl.org/source/openssl-1.0.0c.tar.gz
Download md5 file to generate md5 code
wget http://www.openssl.org/source/openssl-1.0.0c.tar.gz.md5
Generate md5sum
md5sum openssl-1.0.0c.tar.gz
Generate md5 code
cat openssl-1.0.0c.tar.gz.md5
if both code matches than we have downloaded the file completely
unzip the tar file
tar -xvzf openssl-1.1.0c.tar.gz 54. cd openssl-1.1.0c
Configure the openssl before compiling it
./config --prefix=/usr/local/openssl --openssldir=/usr/local/openssl
Compile openssl
make
Install Openssl
sudo make install
The above line gives error, so the below line of code:
sudo make install_sw
Verify if openssl was installed successfully
/usr/local/openssl/bin/openssl version //get the version number of openssl
Come out of the directory and go to the directory of mosquitto:
cd
cd mosquitto-1.3.5
Install another dependency of mosquitto
sudo apt-get install libssl-dev
Compile Mosquitto
sudo make
Install Mosquitto:
sudo make install
download mosquitto auth plugin from github
git clone https://github.com/jpmens/mosquitto-auth-plug.git
Download hiredis
git clone https://github.com/redis/hiredis.git
Go to hiredis directory and compile it and install it
cd hiredis
make
sudo make install
Go to mosquitto auth plugin directory
cd
cd mosquitto-1.3.5
cd mosquitto-auth-plug
Copy the contents of config.mk.in to config.mk
cp config.mk.in config.mk
Open config.mk in edit mode
sudo nano config.mk
Change these lines of code:
MOSQUITTO_SRC = /home/pi/mosquitto-1.3.5
OPENSSLDIR = /usr/local/openssl
Save the file and come out of it
Ctrl + O followed by Enter then
Ctrl + X to exit
Then I try to compile mosquitto-auth-plug:
make
At this time I get this error:
Selected backends: MySQL
Using mosquitto source dir: /home/pi/mosquitto-1.3.5
OpenSSL install dir: /usr/local/openssl
If you changed the backend selection, you might need to 'make clean' first
CFLAGS: -I/home/pi/mosquitto-1.3.5/src/ -I/home/pi/mosquitto-1.3.5/lib/ -fPIC -Wall -Werror -DBE_MYSQL -I/usr/include/mysql -DBIG_JOINS=1 -fno-strict-aliasing -g -DNDEBUG -I/src -DDEBUG=1 -I/usr/local/openssl/include
LDFLAGS: -L/home/pi/mosquitto-1.3.5/lib/
LDADD: -L/usr/lib/arm-linux-gnueabihf -lmysqlclient -lpthread -lz -lm -ldl -L/usr/local/openssl/lib -lcrypto -lmosquitto
cc -I/home/pi/mosquitto-1.3.5/src/ -I/home/pi/mosquitto-1.3.5/lib/ -fPIC -Wall -Werror -DBE_MYSQL `mysql_config --cflags` -I/src -DDEBUG=1 -I/usr/local/openssl/include -c -o cache.o cache.c
cache.c: In function ‘sha_hash’:
cache.c:48:3: error: implicit declaration of function ‘EVP_MD_CTX_new’ [-Werror=implicit-function-declaration]
EVP_MD_CTX *mdctx = EVP_MD_CTX_new();
^
cache.c:48:23: error: initialization makes pointer from integer without a cast [-Werror]
EVP_MD_CTX *mdctx = EVP_MD_CTX_new();
^
cache.c:53:3: error: implicit declaration of function ‘EVP_MD_CTX_free’ [-Werror=implicit-function-declaration]
EVP_MD_CTX_free(mdctx);
^
cc1: all warnings being treated as errors
<builtin>: recipe for target 'cache.o' failed
make: *** [cache.o] Error 1
So, I removed openssl-1.0.0c and installed openssl-1.1.0c version
Then compiling of mosquitto-auth-plug is done successfully
Then move the files as follows:
sudo mv auth-plug.so /etc/mosquitto
sudo mv /etc/mosquitto/mosquitto.conf.example /etc/mosquitto/mosquitto.conf
edit mosquitto .conf file
sudo nano /etc/mosquitto/mosquitto.conf
Press Ctrl + W to search
search for auth_plugin and write below mentioned commands after the second occurance of auth_plugin
auth_plugin /etc/mosquitto/auth-plug.so
auth_opt_backends mysql
auth_opt_redis_host localhost
auth_opt_redis_port 12885
auth_opt_host localhost
auth_opt_port 3306
auth_opt_dbname HAC
auth_opt_user mqtt_user
auth_opt_pass ###YOUR_PASSWORD###
auth_opt_userquery SELECT pw FROM mqtt_users WHERE username = '%s'
auth_opt_superquery SELECT COUNT(*) FROM mqtt_users WHERE username = '%s' AND super = 1
auth_opt_aclquery SELECT topic FROM mqtt_acls WHERE (username = '%s') AND (rw >= %d)
auth_opt_anonusername AnonymouS
Then save the file by presssing Ctrl + O and then Enter
To exit out of the file press Ctrl + X
Then when I run this command:
/usr/local/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
I get the following error:
1486888881: mosquitto version 1.3.5 (build date 2017-02-11 22:22:57+0000) starting
1486888881: Config loaded from /etc/mosquitto/mosquitto.conf.
1486888881: Error: Unable to load auth plugin "/etc/mosquitto/auth-plug.so".
Can anybody help me please?
I have already wasted 4 days in searching a solution of this error.
Update:
I have uninstalled mosquitto and installed its latest version. Still getting the same error but its more descriptive this time. Now it says:
mosquitto version 1.4.10 (build date 2017-02-13 22:22:57+0000) starting
Config loaded from /etc/mosquitto/mosquitto.conf.
Error: Unable to load auth plugin "/etc/mosquitto/auth-plug.so".
Load Error: /etc/mosquitto/auth-plug.so: Undefined Symbol: EVP_MD_CTX_reset