[ruijie] Replace os.system and remove subprocess with shell=True (#12107)

Signed-off-by: maipbui <maibui@microsoft.com>
Dependency: [https://github.com/sonic-net/sonic-buildimage/pull/12065](https://github.com/sonic-net/sonic-buildimage/pull/12065)
#### Why I did it
1. `getstatusoutput` is used without a static string and it uses `shell=True`
2. `subprocess()` - when using with `shell=True` is dangerous. Using subprocess function without a static string can lead to command injection.
3. `os` - not secure against maliciously constructed input and dangerous if used to evaluate dynamic content.
#### How I did it
1. use `getstatusoutput` without shell=True
2. `subprocess()` - use `shell=False` instead. use an array string. Ref: [https://semgrep.dev/docs/cheat-sheets/python-command-injection/#mitigation](https://semgrep.dev/docs/cheat-sheets/python-command-injection/#mitigation)
3. `os` - use with `subprocess`

Author: maipbui

platform/broadcom/sonic-platform-modules-ruijie/b6510-48vs8cq/sonic_pcie/pcie_common.py

@@ -37,14 +37,14 @@ def get_pcie_device(self):
         pciList = []
         p1 = "^(\w+):(\w+)\.(\w)\s(.*)\s*\(*.*\)*"
         p2 = "^.*:.*:.*:(\w+)\s*\(*.*\)*"
-        command1 = "sudo lspci"
-        command2 = "sudo lspci -n"
+        command1 = ["sudo", "lspci"]
+        command2 = ["sudo", "lspci", "-n"]
         # run command 1
-        proc1 = subprocess.Popen(command1, shell=True, universal_newlines=True, stdout=subprocess.PIPE)
+        proc1 = subprocess.Popen(command1, universal_newlines=True, stdout=subprocess.PIPE)
         output1 = proc1.stdout.readlines()
         proc1.communicate()
         # run command 2
-        proc2 = subprocess.Popen(command2, shell=True, universal_newlines=True, stdout=subprocess.PIPE)
+        proc2 = subprocess.Popen(command2, universal_newlines=True, stdout=subprocess.PIPE)
         output2 = proc2.stdout.readlines()
         proc2.communicate()
 

platform/broadcom/sonic-platform-modules-ruijie/b6510-48vs8cq/sonic_platform/chassis.py

@@ -10,13 +10,13 @@
 
 try:
     import time
-    import subprocess
     from sonic_platform_base.chassis_base import ChassisBase
     from sonic_platform.common import Common
     from sonic_platform.sfp import Sfp
     from sonic_platform.sfp import PORT_START
     from sonic_platform.sfp import PORTS_IN_BLOCK
     from sonic_platform.logger import logger
+    from sonic_py_common.general import getstatusoutput_noshell
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
 
@@ -36,17 +36,17 @@ def __init__(self):
         self.SFP_STATUS_INSERTED = "1"
         self.SFP_STATUS_REMOVED = "0"
         self.port_dict = {}
-        self.enable_read= "i2cset -f -y 2 0x35 0x2a 0x01"
-        self.disable_read = "i2cset -f -y 2 0x35 0x2a 0x00"
-        self.enable_write = "i2cset -f -y 2 0x35 0x2b 0x00"
-        self.disable_write = "i2cset -f -y 2 0x35 0x2b 0x01"
-        self.enable_erase = "i2cset -f -y 2 0x35 0x2c 0x01"
-        self.disable_erase = "i2cset -f -y 2 0x35 0x2c 0x00"
-        self.read_value = "i2cget -f -y 2 0x35 0x25"
-        self.write_value = "i2cset -f -y 2 0x35 0x21 0x0a"
-        self.set_sys_led_cmd = "i2cset -f -y 2 0x33 0xb2 "
-        self.get_sys_led_cmd = "i2cget -f -y 2 0x33 0xb2"
-        self.led_status = "red"
+        self.enable_read= ["i2cset", "-f", "-y", "2", "0x35", "0x2a", "0x01"]
+        self.disable_read = ["i2cset", "-f", "-y", "2", "0x35", "0x2a", "0x00"]
+        self.enable_write = ["i2cset", "-f", "-y", "2", "0x35", "0x2b", "0x00"]
+        self.disable_write = ["i2cset", "-f", "-y", "2", "0x35", "0x2b", "0x01"]
+        self.enable_erase = ["i2cset", "-f", "-y", "2", "0x35", "0x2c", "0x01"]
+        self.disable_erase = ["i2cset", "-f", "-y", "2", "0x35", "0x2c", "0x00"]
+        self.read_value = ["i2cget", "-f", "-y", "2", "0x35", "0x25"]
+        self.write_value = ["i2cset", "-f", "-y", "2", "0x35", "0x21", "0x0a"]
+        self.set_sys_led_cmd = ["i2cset", "-f", "-y", "2", "0x33", "0xb2"]
+        self.get_sys_led_cmd = ["i2cget", "-f", "-y", "2", "0x33", "0xb2"]
+        self.led_status = "red" 
         # Initialize SFP list
         # sfp.py will read eeprom contents and retrive the eeprom data.
         # It will also provide support sfp controls like reset and setting
@@ -210,25 +210,25 @@ def get_reboot_cause(self):
         try:
             is_power_loss = False
             # enable read
-            subprocess.getstatusoutput(self.disable_write)
-            subprocess.getstatusoutput(self.enable_read)
-            ret , log = subprocess.getstatusoutput(self.read_value)
+            getstatusoutput_noshell(self.disable_write)
+            getstatusoutput_noshell(self.enable_read)
+            ret , log = getstatusoutput_noshell(self.read_value)
             if ret == 0 and "0x0a" in log:
                 is_power_loss = True
 
             # erase i2c and e2
-            subprocess.getstatusoutput(self.enable_erase)
+            getstatusoutput_noshell(self.enable_erase)
             time.sleep(1)
-            subprocess.getstatusoutput(self.disable_erase)
+            getstatusoutput_noshell(self.disable_erase)
             # clear data
-            subprocess.getstatusoutput(self.enable_write)
-            subprocess.getstatusoutput(self.disable_read)
-            subprocess.getstatusoutput(self.disable_write)
-            subprocess.getstatusoutput(self.enable_read)
+            getstatusoutput_noshell(self.enable_write)
+            getstatusoutput_noshell(self.disable_read)
+            getstatusoutput_noshell(self.disable_write)
+            getstatusoutput_noshell(self.enable_read)
             # enable write and set data
-            subprocess.getstatusoutput(self.enable_write)
-            subprocess.getstatusoutput(self.disable_read)
-            subprocess.getstatusoutput(self.write_value)
+            getstatusoutput_noshell(self.enable_write)
+            getstatusoutput_noshell(self.disable_read)
+            getstatusoutput_noshell(self.write_value)
             if is_power_loss:
                 return(self.REBOOT_CAUSE_POWER_LOSS, None)
         except Exception as e:
@@ -417,7 +417,8 @@ def set_status_led(self, color):
         if regval is None:
             print("Invaild color input.")
             return False
-        ret , log = subprocess.getstatusoutput(self.set_sys_led_cmd + regval)
+        cmd = self.set_sys_led_cmd + [regval]
+        ret, log = getstatusoutput_noshell(cmd)
         if ret != 0:
             print("Cannot execute %s" % self.set_sys_led_cmd + regval)
             return False
@@ -431,7 +432,7 @@ def get_status_led(self):
             A string, one of the valid LED color strings which could be vendor
             specified.
         """
-        ret , log = subprocess.getstatusoutput(self.get_sys_led_cmd)
+        ret , log = getstatusoutput_noshell(self.get_sys_led_cmd)
         if ret != 0:
             print("Cannot execute %s" % self.get_sys_led_cmd)
             return False

platform/broadcom/sonic-platform-modules-ruijie/b6510-48vs8cq/sonic_platform/common.py

@@ -1,6 +1,6 @@
 import os
 import yaml
-
+import subprocess
 from sonic_py_common import device_info
 
 
@@ -10,13 +10,13 @@ class Common:
     PMON_PLATFORM_PATH = '/usr/share/sonic/platform/'
     CONFIG_DIR = 'sonic_platform_config'
 
-    HOST_CHK_CMD = "docker > /dev/null 2>&1"
+    HOST_CHK_CMD = ["docker"]
 
     def __init__(self):
         (self.platform, self.hwsku) = device_info.get_platform_and_hwsku()
 
     def is_host(self):
-        return os.system(self.HOST_CHK_CMD) == 0
+        return subprocess.call(self.HOST_CHK_CMD) == 0
 
     def load_json_file(self, path):
         """

platform/broadcom/sonic-platform-modules-ruijie/b6510-48vs8cq/sonic_platform/component.py

@@ -8,10 +8,10 @@
 ########################################################################
 
 try:
-    import subprocess
     from sonic_platform_base.component_base import ComponentBase
     from sonic_platform.regutil import Reg
     from sonic_platform.logger import logger
+    from sonic_py_common.general import getstatusoutput_noshell
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
 
@@ -70,12 +70,12 @@ def install_firmware(self, image_path):
         """
         try:
             successtips = "CPLD Upgrade succeeded!"
-            status, output = subprocess.getstatusoutput("which firmware_upgrade")
+            status, output = getstatusoutput_noshell(["which", "firmware_upgrade"])
             if status or len(output) <= 0:
                 logger.error("no upgrade tool.")
                 return False
-            cmdstr = "%s %s cpld %d cpld"%(output,image_path,self.slot)
-            ret, log = subprocess.getstatusoutput(cmdstr)
+            cmdstr = [output, image_path, "cpld", self.slot, "cpld"]
+            ret, log = getstatusoutput_noshell(cmdstr)
             if ret == 0 and successtips in log:
                 return True
             logger.error("upgrade failed. ret:%d, log:\n%s" % (ret, log))

platform/broadcom/sonic-platform-modules-ruijie/common/lib/plat_hal/osutil.py

@@ -6,14 +6,14 @@
 #
 #######################################################
 
-import subprocess
 import time
 import glob
 import re
 #import chardet
 from rjutil.smbus import SMBus
 import time
 from  functools import wraps
+from sonic_py_common.general import getstatusoutput_noshell
 
 
 def retry(maxretry =6, delay = 0.01):
@@ -80,13 +80,13 @@ def rji2csetword_python(bus, addr, reg, value):
 
     @staticmethod
     def command(cmdstr):
-        retcode, output = subprocess.getstatusoutput(cmdstr)
+        retcode, output = getstatusoutput_noshell(cmdstr)
         return retcode, output
 
 
     @staticmethod
     def geti2cword_i2ctool(bus, addr, offset):
-        command_line = "i2cget -f -y %d 0x%02x 0x%02x  wp" % (bus, addr, offset)
+        command_line = ["i2cget", "-f", "-y", str(bus), "0x%02x"%addr, "0x%02x"%offset, "wp"]
         retrytime = 6
         ret_t = ""
         for i in range(retrytime):
@@ -99,7 +99,7 @@ def geti2cword_i2ctool(bus, addr, offset):
 
     @staticmethod
     def seti2cword_i2ctool(bus, addr, offset, val):
-        command_line = "i2cset -f -y %d 0x%02x 0x%0x 0x%04x wp" % (bus, addr, offset, val)
+        command_line = ["i2cset", "-f", "-y", str(bus), "0x%02x"%addr, "0x%0x"%offset, "0x%04x"%val, "wp"]
         retrytime = 6
         ret_t = ""
         for i in range(retrytime):
@@ -111,7 +111,7 @@ def seti2cword_i2ctool(bus, addr, offset, val):
 
     @staticmethod
     def rji2cget_i2ctool(bus, devno, address):
-        command_line = "i2cget -f -y %d 0x%02x 0x%02x " % (bus, devno, address)
+        command_line = ["i2cget", "-f", "-y", str(bus), "0x%02x"%devno, "0x%02x"%address]
         retrytime = 6
         ret_t = ""
         for i in range(retrytime):
@@ -123,8 +123,7 @@ def rji2cget_i2ctool(bus, devno, address):
 
     @staticmethod
     def rji2cset_i2ctool(bus, devno, address, byte):
-        command_line = "i2cset -f -y %d 0x%02x 0x%02x 0x%02x" % (
-            bus, devno, address, byte)
+        command_line = ["i2cset", "-f", "-y", str(bus), "0x%02x"%devno, "0x%02x"%address, "0x%02x"%byte]
         retrytime = 6
         ret_t = ""
         for i in range(retrytime):
@@ -166,7 +165,7 @@ def readsysfs(location):
 
     @staticmethod
     def getdevmem(addr, digit, mask):
-        command_line = "devmem 0x%02x %d" %(addr, digit)
+        command_line = ["devmem", "0x%02x"%addr, str(digit)]
         retrytime = 6
         ret_t = ""
         for i in range(retrytime):
@@ -179,13 +178,13 @@ def getdevmem(addr, digit, mask):
 
     @staticmethod
     def rj_os_system(cmd):
-        status, output = subprocess.getstatusoutput(cmd)
+        status, output = getstatusoutput_noshell(cmd)
         return status, output
 
     @staticmethod
     def getsdkreg(reg):
         try:
-            cmd = "bcmcmd -t 1 'getr %s ' < /dev/null" % reg
+            cmd = ["bcmcmd", "-t", "1", "getr"+str(reg)]
             ret, result = osutil.rj_os_system(cmd)
             result_t = result.strip().replace("\r", "").replace("\n", "")
             if ret != 0 or "Error:" in result_t:
@@ -203,8 +202,8 @@ def getmactemp():
             result = {}
             #waitForDocker()
             #need to exec twice
-            osutil.rj_os_system("bcmcmd -t 1 \"show temp\" < /dev/null")
-            ret, log = osutil.rj_os_system("bcmcmd -t 1 \"show temp\" < /dev/null")
+            osutil.rj_os_system(["bcmcmd", "-t", "1", "show temp"])
+            ret, log = osutil.rj_os_system(["bcmcmd", "-t", "1", "show temp"])
             if ret:
                 return False, result
             else: