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| author | Denis Vlasenko | 2008-04-17 12:35:09 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2008-04-17 12:35:09 +0000 |
| commit | 250aa5bb015061787e62f63847df04f377af91c1 (patch) | |
| tree | 3d349c74d7eb3653eceb9d6087267799fd05cabe | |
| parent | c033d5196d863edaabf9d02531a12daa77cc48c7 (diff) | |
| download | busybox-250aa5bb015061787e62f63847df04f377af91c1.zip busybox-250aa5bb015061787e62f63847df04f377af91c1.tar.gz | |
httpd: add an example of POST upload CGI
| -rw-r--r-- | networking/httpd_post_upload.txt | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/networking/httpd_post_upload.txt b/networking/httpd_post_upload.txt new file mode 100644 index 0000000..a53b114 --- /dev/null +++ b/networking/httpd_post_upload.txt @@ -0,0 +1,76 @@ +POST upload example: + +post_upload.htm +=============== +<html> +<body> +<form action=/cgi-bin/post_upload.cgi method=post enctype=multipart/form-data> +File to upload: <input type=file name=file1> <input type=submit> +</form> + + +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 <<EOF +<html> +<body> +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>"$file" + +cat <<EOF +<html> +<body> +File upload was not terminated with '$delim_line' - ??! +EOF |