[ "$include_multipart" ] && return 0
inlude_multipart="$0"
+# Copyright 2022 - 2023 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
if [ "${CONTENT_TYPE}" -a ! "${CONTENT_TYPE##multipart/form-data;*}" ]; then
multipart_boundary="${CONTENT_TYPE#*; boundary=}"
multipart_boundary="${multipart_boundary%%;*}"
}
multipart(){
- local name="$1"
+ local name="$1" count="${2:-1}"
local formdata state=begin
- while read -r formdata; do case "$formdata" in
+ while IFS='' read -r formdata; do case "$formdata" in
"--${multipart_boundary}--${CR}")
[ $state = data ] && return 0 \
|| return 1
|| state=header
;;
"Content-Disposition: form-data; name=\"${name}\""*"${CR}")
- [ $state = header ] && state=dheader
+ [ $state = header -a $count -eq 1 ] && state=dheader
+ [ $state = header -a $count -gt 1 ] && count=$((count - 1))
[ $state = data ] && printf "%s\n" "$formdata"
;;
"${CR}")
- [ $state = dheader ] && state=data
+ if [ $state = dheader ]; then
+ # Do not use `sed -n` (or busybox sed will "convert" NULL to LF)
+ sed "/--${multipart_boundary}\(--\)\?${CR}/{x;q;}" \
+ | head -c-3
+ return 0;
+ fi
[ $state = header ] && state=junk
;;
- *)
- [ $state = data ] && printf "%s\n" "$formdata"
+ esac; done <"${multipart_cachefile}"
+}
+
+multipart_filename(){
+ local name="$1" count="${2:-1}"
+ local formdata state=begin
+
+ while read -r formdata; do case "$formdata" in
+ "--${multipart_boundary}--${CR}")
+ return 1
+ ;;
+ "--${multipart_boundary}${CR}")
+ state=header
+ ;;
+ "Content-Disposition: form-data; name=\"${name}\"; filename=\""*"\""*"${CR}")
+ [ $state = header -a $count -eq 1 ] && break
+ [ $state = header -a $count -gt 1 ] && count=$((count - 1))
+ ;;
+ "${CR}")
+ [ $state = header ] && state=junk
;;
esac; done <"${multipart_cachefile}"
+
+ filename="${formdata#*; filename=\"}"
+ filename="${filename%%\"${CR}}"
+ filename="${filename%%\";*}"
+
+ HEX_DECODE % "$filename"
}