Gammu runonreceive不传递变量

Question

我想将我的Rapsberry配置为SMS乒乓球播放器。所以我安装了gammu-smsd并配置了gammu-smsdrc，如下所示：

# Configuration file for Gammu SMS Daemon
# Gammu library configuration, see gammurc(5)
[gammu]
# Please configure this!
port = /dev/ttyUSB3
pin= 4135
connection = at
# Debugging
logformat = textall
# SMSD configuration, see gammu-smsdrc(5)
[smsd]
RunOnReceive = sudo /var/spool/gammu/receivesms.sh
service = files
pin = 4135
# Increase for debugging information
debuglevel = 1
logfile = /var/spool/gammu/gammu.log
include_smsc = 491722270333
# Paths where messages are stored
inboxpath = /var/spool/gammu/inbox/
outboxpath = /var/spool/gammu/outbox/
sentsmspath = /var/spool/gammu/sent/
errorsmspath = /var/spool/gammu/error/

到目前为止，发送短信接收短信工作正常！

所以我尝试了那个runonreceive的东西。 并编写了一个小脚本，应该获取短信发件人号码和文本。 如果文本是"ping"gammu-SMSD应该将Pong发送回发件人。

reveivessms.sh：

#!/bin/sh
from=$SMS_1_NUMBER
message=$SMS_1_TEXT
reply=""
if test "$message" = "Ping"; then
    reply="Pong!"
else
    reply="Y U NO PLAY PING PONG?"
fi

sudo echo "$reply" | /usr/bin/gammu-smsd-inject -c /etc/gammu-smsdrc TEXT "$from"

Gammu.log是：

Wed 2016/05/25 09:04:31 gammu-smsd[21681]: Received message from: +49160xxxxx
Wed 2016/05/25 09:04:31 gammu-smsd[21681]: Read 1 messages
Wed 2016/05/25 09:04:31 gammu-smsd[21681]: Received IN20160525_090429_00_+49160xxxxxx_00.txt
Wed 2016/05/25 09:04:31 gammu-smsd[21994]: Starting run on receive: sudo /var/spool/gammu/receivesms.sh IN20160525_090429_00_+49160xxxxxx_00.txt 
Wed 2016/05/25 09:04:31 gammu-smsd[21681]: Process finished successfully
Wed 2016/05/25 09:04:53 gammu-smsd[21681]: Found 1 sms to "" with text "Y U NO PLAY PING PONG?" cod 3 lgt 22 udh: t 1 l 0 dlr: -1 fls: -1
Wed 2016/05/25 09:04:53 gammu-smsd[21681]: New message to send: OUTC20160525_090431_00__sms0.smsbackup
Wed 2016/05/25 09:04:53 gammu-smsd[21681]: Message without SMSC, assuming you want to use the one from phone
Wed 2016/05/25 09:05:19 gammu-smsd[21681]: SMS sent on device: "/dev/ttyUSB3" status=500, reference=-1
Wed 2016/05/25 09:05:19 gammu-smsd[21681]: Error getting send status of message: Unknown error. (UNKNOWN[27])

嗯没有消息回复...

所以我尝试不传递参数并将 receivesms.sh 更改为：

#!/bin/sh
sudo echo Gude Wie | /usr/bin/gammu-smsd-inject -c /etc/gammu-smsdrc TEXT 49160xxxx

一切都在正常。似乎，传递给 receicesms.sh 的变量不起作用。但我不知道为什么？

Answer 1

在接收上运行以使用 gammu-smsd-inject 发送短信回复是一项任务。

对于遇到此问题的其他任何人。我通过将 gammu-smsd-inject 命令的 stdout 和 stderr 重定向到/dev/null 来解决它。

echo "This somehow works" | gammu-smsd-inject TEXT $from > /dev/null 2>&1

问候

Answer 2

问题是 sudo 不会将环境变量保留在默认配置中，所以我建议您避免在脚本中使用 sudo。以根身份运行SMSD也是潜在的安全风险，因为如果短信解码出现一些错误，攻击者直接以root身份运行。

因此，最好以用户身份运行SMSD，并相应地更改/var/spool/gammu和调制解调器/电话设备的权限。

如果您坚持以 root 身份运行 SMSD，请更改 sudo 配置以保留环境变量，请参阅使用 SUDO 时如何保留环境变量