source: branches/3.2/mindi-busybox/networking/httpd_post_upload.txt @ 3232

Last change on this file since 3232 was 2725, checked in by bruno, 8 years ago
  • Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
  • Property svn:eol-style set to native
File size: 1.6 KB
Line 
1POST upload example:
2
3post_upload.htm
4===============
5<html>
6<body>
7<form action=/cgi-bin/post_upload.cgi method=post enctype=multipart/form-data>
8File to upload: <input type=file name=file1> <input type=submit>
9</form>
10
11
12post_upload.cgi
13===============
14#!/bin/sh
15
16# POST upload format:
17# -----------------------------29995809218093749221856446032^M
18# Content-Disposition: form-data; name="file1"; filename="..."^M
19# Content-Type: application/octet-stream^M
20# ^M    <--------- headers end with empty line
21# file contents
22# file contents
23# file contents
24# ^M    <--------- extra empty line
25# -----------------------------29995809218093749221856446032--^M
26
27file=/tmp/$$-$RANDOM
28
29CR=`printf '\r'`
30
31# CGI output must start with at least empty line (or headers)
32printf '\r\n'
33
34IFS="$CR"
35read -r delim_line
36IFS=""
37
38while read -r line; do
39    test x"$line" = x"" && break
40    test x"$line" = x"$CR" && break
41done
42
43cat >"$file"
44
45# We need to delete the tail of "\r\ndelim_line--\r\n"
46tail_len=$((${#delim_line} + 6))
47
48# Get and check file size
49filesize=`stat -c"%s" "$file"`
50test "$filesize" -lt "$tail_len" && exit 1
51
52# Check that tail is correct
53dd if="$file" skip=$((filesize - tail_len)) bs=1 count=1000 >"$file.tail" 2>/dev/null
54printf "\r\n%s--\r\n" "$delim_line" >"$file.tail.expected"
55if ! diff -q "$file.tail" "$file.tail.expected" >/dev/null; then
56    printf "<html>\n<body>\nMalformed file upload"
57    exit 1
58fi
59rm "$file.tail"
60rm "$file.tail.expected"
61
62# Truncate the file
63dd of="$file" seek=$((filesize - tail_len)) bs=1 count=0 >/dev/null 2>/dev/null
64
65printf "<html>\n<body>\nFile upload has been accepted"
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