$ go build -buildmode=c-shared -o pam_line-otp.so

auth    required    /home/saso/pam_line-otp/pam_line-otp.so DbPath=/path/to/pam_line-otp.db LineAccessToken=XXXXXX

$ sudo sqlite3 /etc/pam_line-otp.db 'CREATE TABLE "users" ("account_name" varchar(32) UNIQUE,"line_id" varchar(40) )'
$ sudo sqlite3 /etc/pam_line-otp.db 'INSERT INTO "users" VALUES ("test", $LINE_UID);'