| Denis Vlasenko | 5d148e2 | 2006-11-21 00:12:09 +0000 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | # This CGI creates directory index. |
| 3 | # Put it into cgi-bin/index.cgi and chmod 0755. |
| 4 | # |
| 5 | # Problems: |
| 6 | # * Unsafe wrt weird filenames with <>"'& etc... |
| 7 | # * Not efficient: calls stat (program, not syscall) for each file |
| 8 | # * Probably requires bash |
| 9 | # |
| 10 | # If you want speed and safety, you need to code it in C |
| 11 | |
| 12 | # Must start with '/' |
| 13 | test "${QUERY_STRING:0:1}" = "/" || exit 1 |
| 14 | # /../ is not allowed |
| 15 | test "${QUERY_STRING%/../*}" = "$QUERY_STRING" || exit 1 |
| 16 | test "${QUERY_STRING%/..}" = "$QUERY_STRING" || exit 1 |
| 17 | |
| 18 | # Outta cgi-bin... |
| 19 | cd .. 2>/dev/null || exit 1 |
| 20 | # Strip leading '/', go to target dir |
| 21 | cd "${QUERY_STRING:1}" 2>/dev/null || exit 1 |
| 22 | |
| 23 | f=`dirname "$QUERY_STRING"` |
| 24 | test "$f" = "/" && f="" |
| 25 | |
| 26 | # Pipe thru dd (need to write header as single write(), |
| 27 | # or else httpd doesn't see "Content-type: text/html" |
| 28 | # in first read() and decides that it is not html) |
| 29 | { |
| 30 | printf "%s" \ |
| 31 | $'HTTP/1.0 200 OK\r\n'\ |
| 32 | $'Content-type: text/html\r\n\r\n'\ |
| 33 | "<html><head><title>Index of $QUERY_STRING</title></head>"$'\r\n'\ |
| 34 | "<body><h1>Index of $QUERY_STRING</h1><pre>"$'\r\n'\ |
| 35 | $'<table width=100%>\r\n'\ |
| 36 | $'<col><col><col width=0*>\r\n'\ |
| 37 | $'<tr><th>Name<th align=right>Last modified<th align=right>Size\r\n'\ |
| 38 | \ |
| 39 | "<tr><td><a href='$f/'>..</a><td><td>"$'\r\n' |
| 40 | |
| 41 | IFS='#' |
| 42 | for f in *; do |
| 43 | # Guard against empty dirs... |
| 44 | test -e "$f" && \ |
| 45 | stat -c "%F#%s#%z" "$f" | { |
| 46 | read type size cdt junk |
| 47 | dir='' |
| 48 | test "$type" = "directory" && dir='/' |
| 49 | cdt="${cdt//.*}" # no fractional seconds |
| 50 | cdt="${cdt// / }" # prevent wrapping around space |
| 51 | printf "%s" "<tr><td><a href='$f$dir'>$f</a><td align=right>$cdt<td align=right>$size"$'\r\n' |
| 52 | } |
| 53 | done |
| 54 | printf "</table></pre><hr></body></html>"$'\r\n' |
| 55 | } | dd bs=4k |