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在 sh 脚本中卷曲；可能是由于空白

tag-icon • tag-icon bash shell-script curl
在 sh 脚本中卷曲；可能是由于空白

我有一个sh正在监听日志输出的脚本。当它在某些条件下找到 IP 地址时，需要curl向该 IP 地址发送请求（如果重要的话，接收器是 Polycom VoIP 电话）。

在接收器上，我得到：

PushParserC::parseDoc: Expecting <PolycomIPPhone>: $'<PolycomIPPhone><Data

正确的行会产生以下结果：

wappPushHandlerC::Handle: <PolycomIPPhone><Data priority="Critical">Key:Setup

在-v转储中curl我得到：

curl: (6) Could not resolve host: priority="Critical">Key.... < 应该是 IP 地址

在这两种情况下，我的脚本中的空白区域似乎都被切断了。大多数解决方案都会消除空格，但这会破坏预期的 XHTML。

我的脚本如下

#!/bin/sh

tail -0f /var/log/somelogfile.log | while read line
do
  if echo $line | grep "\[WARNING\]" | grep -q "SIP auth failure" ; then

    # Log detected sip authentication error to file
    STR="$(echo $line | awk '{print "Date:",$1,"Time:",$2,"Login:",$14,"IP:",$17}')" >> logger.txt

    # Get the found private IP address out of the errored line
    IP="$(echo $STR | rev | cut -d" " -f1 | rev)"

    # Provide output to the user of the IP to brute
    echo "Target IP: " $IP

    # Content Type header
    CT="Content-Type: application/x-com-polycom-spipx"

    # The XHTML to send to the phone in question for forced factory reset
    XHTML="curl -v --digest -u Push:Push -d $'<PolycomIPPhone><Data priority=\"Critical\">Key:Setup\nKey:Dialpad2\nKey:Dialpad9\nKey:Dialpad9\nKey:Dialpad9\nKey:Softkey4\nKey:Dialpad1\nKey:Dialpad5\nKey:Dialpad5</Data></PolycomIPPhone>' --header \"$CT\" $IP/push"

    # print out URL for test
    echo $XHTML
    RESPONSE=`$XHTML`
    echo
    echo $RESPONSE
  fi
done


# This is an example of the fuctional code that works straight in the terminal.
# curl --digest -u Push:Push -d $'<PolycomIPPhone><Data priority="Critical">Key:Setup\nKey:Dialpad2\nKey:Dialpad9\nKey:Dialpad9\nKey:Dialpad9\nKey:Softkey4\nKey:Dialpad1\nKey:Dialpad5\nKey:Dialpad5</Data></PolycomIPPhone>' --header "Content-Type: application/x-com-polycom-spipx" xx.xx.xx.xx/push && echo

其他解决方案会删除在此上下文中不可能的空白或进行编码。但在这个应用程序中这两个都不起作用！

谢谢！

答案1

对于-d选择，我会尝试

echo '$<PolycomIPPhone><Data priority=\"Critical\">....' | curl -d@- (other options)

根据man curl

如果您以字母@开头数据，则其余部分应该是从中读取数据的文件名，或者 - 如果您希望curl从stdin读取数据。

答案2

使用@Archemar 和@dave_thompson_085 的帮助，我能够制定一个可行的解决方案。

为了解决发送或接收时的空格和换行问题，我创建了一个包含上述内容和“实际”换行符的文件。将新文件通过管道传输到curl中仍然给我带来了同样的问题，直到我发现将内容作为“表单”发送，从而保持格式完整。

看到这样的问题以自动化的方式得到解决绝对是很酷的。

再次感谢大家

#!/bin/bash
# Sends a data file to the phone using curl
tail -0f /var/log/freeswitch/freeswitch.log | while read line
do
    if [[ $line == *\[WARNING\]* && $line == *SIP\ auth\ failure* ]] ; then

        STR="$(echo $line | awk '{print "Date:",$1,"Time:",$2,"IP:",$17,"Login:",$14}')" # Pull important lines from log
        IP="${line##* }" # Store private IP address of failed auth
        CT="Content-Type: application/x-com-polycom-spipx" # Content Type header
        OCCUR=`grep "$IP" logger.txt | wc -l` # Count of how many failed attempts to auth

        # Provide output to the terminal
        echo -n "TargetIP:" $IP

        # If there are less than 6 attemps at authenticating, send commands to phone
        if [ $OCCUR -le 5 ] ; then

            echo " Formatting with" $OCCUR "previous attepts."

            # Log the parsed string from the log with attempt status
            echo "Status: FORMAT" $STR >> logger.txt

            # Send user a HTML warning screen
            curl -s --digest -u push:push -d "<PolycomIPPhone><Data priority='"critical"'><h1> PHONE WILL UPDATE </h1>Please do not interact with the phone. It will now format and restart. Contact IT support for any concerns</Data></PolycomIPPhone>" --header $CT $IP/push  > /dev/null

            # Allow for user read time
            sleep 8

           # Send instruction set phone in question for forced factory reset
            curl -s --digest -u push:push --form "[email protected]" --header "$CT" $IP/push  > /dev/null

       # If there are 6 failed attempts, log to file for further action
       elif [ $OCCUR -eq 6 ] ; then
            echo " Too many attempts. Logging..."
            echo "Status: FAILED" $STR >> logger.txt

       # Beyond 6 attemps, no action will be taken
       else
            echo " IGNORED"
       fi
    fi
done

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