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Overview
Comment: | Fix the multipart/form-data parser so that it can accept none-file uploads. Add the "fileupload.tcl" example. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
cfa2467c173500071c1935f8a863f9da |
User & Date: | drh 2019-03-04 19:18:37.614 |
Context
2019-03-06
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17:44 | Update the fileupload.tcl example so that uploaded images are shown in-line. This demonstrates how to use the TCL "binary encode" command to generate base64 from the raw image content and how to modify content-security-policy to allow "data:" sources for images. (check-in: af9968656c user: drh tags: trunk) | |
2019-03-04
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19:18 | Fix the multipart/form-data parser so that it can accept none-file uploads. Add the "fileupload.tcl" example. (check-in: cfa2467c17 user: drh tags: trunk) | |
2019-02-16
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12:07 | Minor updates to the documentation. (check-in: ca3221ef4e user: drh tags: trunk) | |
Changes
Added examples/fileupload.tcl.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | #!/usr/bin/wapptclsh # # This script demonstrates a Wapp application that can accept a file # upload using <input type="file"> # package require wapp proc common-header {} { wapp-trim { <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link href="%url([wapp-param SCRIPT_NAME]/style.css)" rel="stylesheet"> <title>Wapp File-Upload Demo</title> </head> <body> } } proc common-footer {} { wapp-trim { </body> </html> } } proc wapp-default {} { wapp-cache-control max-age=3600 common-header wapp-trim { <h1>Wapp File-Upload Demo</h1> } # NB: You must set enctype="multipart/form-data" on your <form> in order # for file upload to work. wapp-trim { <p><form method="POST" enctype="multipart/form-data"> File To Upload: <input type="file" name="file"><br> <input type="checkbox" name="showenv" value="1">Show CGI Environment<br> <input type="submit" value="Submit"> </form></p> } # Ordinary query parameters come through just like normal if {[wapp-param showenv 0]} { wapp-trim { <h1>Wapp Environment</h1> <pre>%html([wapp-debug-env])</pre> } } # File upload query parameters come in three parts: The *.mimetype, # the *.filename, and the *.content. set mimetype [wapp-param file.mimetype {}] set filename [wapp-param file.filename {}] set content [wapp-param file.content {}] if {$filename!=""} { wapp-trim { <h1>Uploaded File Content</h1> <p>Filename: %html($filename)<br> MIME-Type: %html($mimetype)<br> Content:</p> <blockquote><pre> %html($content) </pre></blockquote> } } common-footer } proc wapp-page-style.css {} { wapp-mimetype text/css wapp-cache-control max-age=3600 wapp-trim { pre { border: 1px solid black; padding: 1ex; } } } wapp-start $argv |
Changes to wapp.tcl.
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550 551 552 553 554 555 556 | regexp {^(.*?)\r\n(.*)$} [dict get $wapp CONTENT] all divider body set ndiv [string length $divider] while {[string length $body]} { set idx [string first $divider $body] set unit [string range $body 0 [expr {$idx-3}]] set body [string range $body [expr {$idx+$ndiv+2}] end] if {[regexp {^Content-Disposition: form-data; (.*?)\r\n\r\n(.*)$} \ | | | | | | | | > > > | 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 | regexp {^(.*?)\r\n(.*)$} [dict get $wapp CONTENT] all divider body set ndiv [string length $divider] while {[string length $body]} { set idx [string first $divider $body] set unit [string range $body 0 [expr {$idx-3}]] set body [string range $body [expr {$idx+$ndiv+2}] end] if {[regexp {^Content-Disposition: form-data; (.*?)\r\n\r\n(.*)$} \ $unit unit hdr content]} { if {[regexp {name="(.*)"; filename="(.*)"\r\nContent-Type: (.*?)$}\ $hdr hr name filename mimetype]} { dict set wapp $name.filename \ [string map [list \\\" \" \\\\ \\] $filename] dict set wapp $name.mimetype $mimetype dict set wapp $name.content $content } elseif {[regexp {name="(.*)"} $hdr hr name]} { dict set wapp $name $content } } } } } } # Invoke application-supplied methods to generate a reply to |
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