37 lines
1.2 KiB
Bash
Executable File
37 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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[ -f functions.sh ] && source functions.sh
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# Dependencies required by this trigger
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dependencies=("curl" "w3m" "sed")
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# Silently skip if dependencies are missing (triggers shouldn't error in channel)
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if ! check_dependencies "${dependencies[@]}" &> /dev/null; then
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exit 0
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fi
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for l in $3 ; do
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text="${l#:}"
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if [[ "${text}" =~ http://|https://|www\..* ]]; then
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# Security: Only allow http:// and https:// protocols
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if [[ ! "$text" =~ ^https?:// ]]; then
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# Convert www. to http://www.
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if [[ "$text" =~ ^www\. ]]; then
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text="http://$text"
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else
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# Skip unknown protocols
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continue
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fi
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fi
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# Remove potentially dangerous shell metacharacters from URL
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text="${text//[;&|]/}"
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# Fetch page title with timeout and security limits
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pageTitle="$(curl -L -s --connect-timeout 5 --max-time 10 "$text" | sed -n -e 'H;${x;s!.*<head[^>]*>\(.*\)</head>.*!\1!;T;s!.*<title>\(.*\)</title>.*!\1!p}' | w3m -dump -T text/html | tr '[:space:]' ' ')"
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pageTitle="$(echo "$pageTitle" | tr -cd '[:print:]')"
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if [[ ${#pageTitle} -gt 1 ]]; then
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msg "$2" "$pageTitle"
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fi
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fi
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done
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