Script Library: 1223 scripts
 

http-tools.r

REBOL [ Title: "Http tools" Date: 14-Dec-2000 Version: 0.0.3 File: %http-tools.r Author: "Graham Chiu" Usage: { ^-^-variables are stored in the http-tools-data object. To read a page which requires ^-^-basic http-authentication, set them first as follows: ^-^-http-tools-data/username: "myusername" ^-^-http-tools-data/password: "mypassword" ^-^-You may clear them by using the function 'clear-http-tools ^-^-To fetch a page which sends you a cookie, pass the function an empty block ^-^-tmp: HTTP-TOOLS http://www.rebol.com [] ^-^-The url encoded cookie will be returned as http-tools-data/cookie-data ^-^-To post to a page which may or may not require a cookie, pass the name value pairs in the block, ^-^-and call 'http-tools with the /post refinement. ^-^-tmp: HTTP-TOOLS/POST http://www.rebol.com/cgi-bin/register.r [ "name1" "value1" "name2" value2" ... ] ^-^-http-tools will use the cookie(s) stored in http-tools-data/cookie-data ^-^-The name value pairs will be url-encoded by http-tools. ^-^-The page in all cases will be returned by the function. You can view the content ^-^-as tmp/content, and look at the header data by ^-^-probe tmp ^-^-If the page fetched by http-tools contains a location directive, that will be ^-^-also stored in http-tools-data/location ^-} Purpose: {To grab cookies from the server and post form data. } Email: %gchiu--compkarori--co--nz Notes: { ^-^-Modification of Andrew Grossman's cookies-client script by Graham Chiu. ^-^-Modification of Martin Johannesson's POST script by Andrew Grossman. ^-^-Orig. cookies-client.r available at www.rebol.com in users' library. ^-} library: [ level: 'advanced platform: none type: 'tool domain: 'web tested-under: none support: none license: none see-also: none ] ] url-encode: func [ {URL-encode a string} data "String to encode" /local new-data ][ new-data: make string! "" normal-char: charset [ #"A" - #"Z" #"a" - #"z" #"@" #"." #"*" #"-" #"_" #"0" - #"9" ] if not string? data [return new-data] forall data [ append new-data either find normal-char first data [ first data ][ rejoin ["%" to-string skip tail (to-hex to-integer first data) -2] ] ] new-data ] http-tools-data: make object! [ location: copy "" username: copy "" password: copy "" cookie-data: copy "" ] http-tools: func [ { read pages off web server, or post values to http forms and automatically handle cookies, authentication } url "The URL" data [block!] "A block of name/value pairs to represent the form data" /local encoded-data port-spec HTTP-Post-Header http-request buffer tmp-buffer tmp-header /post "Post form data" ] [ port-spec: make port! [ scheme: 'tcp port-id: 80 timeout: 0:30 ] ; check that being passed a valid url net-utils/url-parser/parse-url port-spec url ; encode the value pairs encoded-data: make string! "" foreach [name value] data [ append encoded-data rejoin [ url-encode name "=" url-encode value "&" ] ] remove back tail encoded-data either post [; post data to a form at url HTTP-Post-Header: make object! [ Accept: "text/html" User-Agent: reform ["REBOL" system/version] Host: port-spec/host Content-Type: "application/x-www-form-urlencoded" Content-Length: length? encoded-data Cookie: http-tools-data/cookie-data Authorization: join {Basic } enbase rejoin [http-tools-data/username ":" http-tools-data/password] ] http-request: rejoin [ "POST /" either found? port-spec/path [port-spec/path] [""] either found? port-spec/target [port-spec/target] [""] " HTTP/1.0" ] ] [; just read the url HTTP-Post-Header: make object! [ Accept: "*/*" User-Agent: reform ["REBOL" system/version] Host: port-spec/host Cookie: http-tools-data/cookie-data Authorization: join {Basic } enbase rejoin [http-tools-data/username ":" http-tools-data/password] ] http-request: rejoin [ "GET /" either found? port-spec/path [port-spec/path] [""] either found? port-spec/target [port-spec/target] [""] " HTTP/1.0" ] ] http-port-private: open/lines [ scheme: 'tcp port-id: port-spec/port-id timeout: port-spec/timeout host: port-spec/host user: port-spec/user pass: port-spec/pass ] insert http-port-private http-request insert http-port-private net-utils/export HTTP-Post-Header "^/" if not empty? encoded-data [ insert http-port-private encoded-data ] buffer: make string! 10000 tmp-buffer: reform ["HTTP-Response:" pick http-port-private 1] while [not none? tmp-buffer] [ append buffer rejoin [tmp-buffer "^/"] tmp-buffer: pick http-port-private 1 ] close http-port-private http-tools-data/cookie-data: copy "" parse buffer [ any [thru "Set-cookie:" copy txt to " " (append http-tools-data/cookie-data txt) ] | skip ] HTTP-Header: make object! [ HTTP-Response: Date: Server: Last-Modified: none Accept-Ranges: Content-Encoding: Content-Type: none Content-Length: Location: Expires: Referer: Connection: none Set-Cookie: none ] tmp-header: parse-header HTTP-Header buffer either none? tmp-header/Location [ http-tools-data/location: copy "" ] [ http-tools-data/location: tmp-header/Location ] tmp-header ] clear-http-tools: func [] [ http-tools-data/cookie-data: copy "" http-tools-data/location: copy "" http-tools-data/username: copy "" http-tools-data/password: copy "" ]
halt ;; to terminate script if DO'ne from webpage
Notes