git.plutz.net Git - shellwiki/blob - attachment.sh

   1 #!/bin/sh
   2
   3 attachment_convert(){
   4   local attpath="$1"
   5   local cachepath="${attpath%/#attachments/*}/#cache/${attpath#*/#attachments/}"
   6   local res junk
   7
   8   case $attpath in
   9     *.webm|*.mp4|*.mkv|*.avi)
  10       cachepath="${cachepath}.webm"
  11       ;;
  12   esac
  13
  14   if [ -s "$cachepath" ]; then
  15     printf %s "$cachepath"
  16     return 0
  17   elif [ -f "$cachepath" ]; then
  18     printf %s "$attpath"
  19     return 0
  20   elif ! mkdir -p -- "${cachepath%/*}" && touch "$cachepath"; then
  21     printf %s "$attpath"
  22     return 0
  23   fi
  24
  25   case $attpath in
  26     *.jpg|*.jpeg|*.png)
  27       read junk junk res junk <<-EOF
  28         $(identify "$attpath")
  29         EOF
  30       if [ "${res%x*}" -gt 2048 ]; then
  31         convert "$attpath" -resize 1920x-2 -quality 85 "$cachepath"
  32       else
  33         convert "$attpath" -quality 85 "$cachepath"
  34       fi
  35       printf %s "$cachepath"
  36       return 0
  37     ;;
  38     *.webm|*.mp4|*.mkv|*.avi)
  39       res=$(ffprobe -show_entries stream=width "$attpath" 2>&-)
  40       res="${res#*width=}" res="${res%%${BR}*}"
  41       if [ "$res" -gt 1280 ]; then
  42         ( exec >&- 2>&1;
  43           ffmpeg -y -nostdin -i "$attpath" \
  44           -c:v libvpx -vf scale=1280:-2 -crf 28 -b:v 0 \
  45           -c:a libvorbis -q:a 6 \
  46           "${cachepath%.*}.tmp.webm" \
  47           && mv -- "${cachepatch%.*}.tmp.webm" "${cachepath}" \
  48         & ) &
  49
  50       else
  51         ( exec >&- 2>&1;
  52           ffmpeg -y -nostdin -i "$attpath" \
  53           -c:v libvpx -crf 28 -b:v 0 \
  54           -c:a libvorbis -q:a 6 \
  55           "${cachepath%.*}.tmp.webm" \
  56           && mv -- "${cachepatch%.*}.tmp.webm" "${cachepath}" \
  57         & ) &
  58       fi
  59       printf %s "$attpath"
  60       return 0
  61     ;;
  62   esac
  63 }
  64
  65 if [ "${PATH_INFO%/\[attachment\]/}"  != "${PATH_INFO}" ]; then
  66   . "$_EXEC/multipart.sh"
  67
  68   if [ "${CONTENT_TYPE%%;*}" = "multipart/form-data" ] && acl_write "${PATH_INFO%\[attachment\]/}"; then
  69     multipart_cache
  70     mkdir -p "$_DATA/pages/${PATH_INFO%/\[attachment\]/}/#attachments/"
  71     n=1; while filename=$(multipart_filename "file" "$n"); do
  72       filename="$(printf %s "$filename" |tr /\\0 __)"
  73       multipart "file" "$n" >"$_DATA/pages/${PATH_INFO%/\[attachment\]/}/#attachments/$filename"
  74       n=$((n + 1))
  75     done
  76     rm -- "$multipart_cachefile"
  77     REDIRECT "${_BASE}${PATH_INFO}"
  78   elif [ "${CONTENT_TYPE%%;*}" = "multipart/form-data" ]; then
  79     theme_403
  80   elif acl_read "${PATH_INFO%\[attachment\]/}"; then
  81     theme_attachments "${PATH_INFO%\[attachment\]/}"
  82   else
  83     theme_404
  84   fi
  85
  86 elif [ "${PATH_INFO%/\[attachment\]/*}" != "${PATH_INFO}" ]; then
  87   attpath="${PATH_INFO%/\[attachment\]/*}/#attachments/${PATH_INFO##*/}"
  88
  89   if ! acl_read "${PATH_INFO%/\[attachment\]/*}"; then
  90     theme_403
  91   elif [ -f "$_DATA/pages/$attpath" ]; then
  92     FILE "$_DATA/pages/$attpath"
  93   elif [ -f "$_EXEC/pages/$attpath" ]; then
  94     FILE "$_EXEC/pages/$attpath"
  95   else
  96     theme_404
  97   fi
  98   exit 0;
  99
 100 elif [ "${PATH_INFO%/}" = "${PATH_INFO}" ]; then
 101   attpath="${PATH_INFO%/*}/#attachments/${PATH_INFO##*/}"
 102
 103   if ! acl_read "${PATH_INFO%/*}/"; then
 104     theme_403
 105   elif [ -f "$_DATA/pages/$attpath" ]; then
 106     FILE "$(attachment_convert "$_DATA/pages/$attpath")"
 107   elif [ -f "$_EXEC/pages/$attpath" ]; then
 108     FILE "$(attachment_convert "$_EXEC/pages/$attpath")"
 109   elif [ -d "$_DATA/pages/${PATH_INFO}" -o -d "$_EXEC/pages/${PATH_INFO}" ]; then
 110     REDIRECT "${_BASE}${PATH_INFO}/"
 111   else
 112     theme_404
 113   fi
 114   exit 0
 115
 116 fi