POST upload example: post_upload.htm ===============
File to upload:
post_upload.cgi =============== #!/bin/sh # POST upload format: # -----------------------------29995809218093749221856446032^M # Content-Disposition: form-data; name="file1"; filename="..."^M # Content-Type: application/octet-stream^M # ^M <--------- headers end with empty line # file contents # file contents # file contents # ^M <--------- extra empty line # -----------------------------29995809218093749221856446032--^M # Beware: bashism $'\r' is used to handle ^M file=/tmp/$$-$RANDOM # CGI output must start with at least empty line (or headers) printf '\r\n' IFS=$'\r' read -r delim_line IFS='' delim_line="${delim_line}--"$'\r' while read -r line; do test "$line" = '' && break test "$line" = $'\r' && break done # This will not work well for binary files: bash 3.2 is upset # by reading NUL bytes and loses chunks of data. # If you are not bothered by having junk appended to the uploaded file, # consider using simple "cat >file" instead of the entire # fragment below. while read -r line; do while test "$line" = $'\r'; do read -r line test "$line" = "$delim_line" && { # Aha! Empty line + delimiter! All done cat < File upload has been accepted EOF exit 0 } # Empty line + NOT delimiter. Save empty line, # and go check next line printf "%s\n" $'\r' -vC >&3 done # Not empty line - just save printf "%s\n" "$line" -vC >&3 done 3>"$file" cat < File upload was not terminated with '$delim_line' - ??! EOF