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Diffstat (limited to 'nclients.scm')
| -rw-r--r-- | nclients.scm | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/nclients.scm b/nclients.scm new file mode 100644 index 0000000..96c36c9 --- /dev/null +++ b/nclients.scm @@ -0,0 +1,385 @@ +;;; "nclients.scm" Interface to net-client programs. +; Copyright 1997, 1998 Aubrey Jaffer +; +;Permission to copy this software, to redistribute it, and to use it +;for any purpose is granted, subject to the following restrictions and +;understandings. +; +;1. Any copy made of this software must include this copyright notice +;in full. +; +;2. I have made no warrantee or representation that the operation of +;this software will be error-free, and I am under no obligation to +;provide any services, by way of maintenance, update, or otherwise. +; +;3. In conjunction with products arising from the use of this +;material, there shall be no use of my name in any advertising, +;promotional, or sales literature without prior written consent in +;each case. + +(require 'string-search) +(require 'line-i/o) +(require 'system) +(require 'printf) +(require 'scanf) + +;;@args proc +;;@args proc k +;;Calls @1 with @var{k} arguments, strings returned by successive +;;calls to @code{tmpnam}. If @1 returns, then any files named by the +;;arguments to @1 are deleted automatically and the value(s) yielded +;;by the @1 is(are) returned. @var{k} may be ommited, in which case +;;it defaults to @code{1}. +(define (call-with-tmpnam proc . k) + (do ((cnt (if (null? k) 0 (+ -1 (car k))) (+ -1 cnt)) + (paths '() (cons (tmpnam) paths))) + ((negative? cnt) + (let ((ans (apply proc paths))) + (for-each (lambda (path) (if (file-exists? path) (delete-file path))) + paths) + ans)))) + +;;@args +;;@0 returns a string of the form @samp{username@r{@@}hostname}. If +;;this e-mail address cannot be obtained, #f is returned. +(define user-email-address + (let ((user (or (getenv "USER") (getenv "USERNAME"))) + (hostname (getenv "HOSTNAME"))) ;with domain + (lambda () + (if (not (and user hostname)) + (call-with-tmpnam + (lambda (tmp) + (define command->string + (lambda (command) + (and (zero? (system (string-append command " >" tmp))) + (file-exists? tmp) + (let ((res #f)) + (call-with-input-file tmp + (lambda (port) + (and (eqv? 1 (fscanf port "%s" res)) res))))))) + (case (software-type) + ;;((AMIGA) ) + ;;((MACOS THINKC) ) + ((MS-DOS WINDOWS OS/2 ATARIST) + (let ((compname (getenv "COMPUTERNAME")) ;without domain + (workgroup #f) + (netdir (or (getenv "windir") + (getenv "winbootdir") + (and (getenv "SYSTEMROOT") + (string-append (getenv "SYSTEMROOT") + "\\system32")) + "C:\\windows"))) + (define (net . cmd) + (zero? (system (apply string-append + (or netdir "") + (if netdir "\\" "") + "NET " cmd)))) + (and (not (and user hostname)) + (zero? (system (string-append + (or netdir "") + (if netdir "\\" "") + "IPCONFIG /ALL > " tmp " "))) + (file-exists? tmp) + ;;(print tmp '=) (display-file tmp) + (call-with-input-file tmp + (lambda (port) + (find-string-from-port? "Host Name" port) + (fscanf port " %*[. ]: %s" hostname) + (delete-file tmp)))) + (and (not (and user hostname)) + (net "START /LIST >" tmp) + (file-exists? tmp) + (not (eof-object? (call-with-input-file tmp read-char))) + (cond + ((call-with-input-file tmp + (lambda (port) + (find-string-from-port? "o network servic" port))) + (and (net "CONFIG /YES >" tmp) + (net "STOP /YES"))) + (else (net "CONFIG /YES >" tmp))) + (call-with-input-file tmp + (lambda (port) + (do ((line (read-line port) (read-line port))) + ((eof-object? line)) + (sscanf line " Workstation root directory %s" + netdir) + (sscanf line " Computer name \\\\%s" compname) + (sscanf line " Workstation Domain %s" workgroup) + (sscanf line " Workgroup %s" workgroup) + (sscanf line " User name %s" user))))) + (and netdir (not (and user hostname)) + (set! netdir (string-append netdir "\\system.ini")) + (file-exists? netdir) + (call-with-input-file netdir + (lambda (port) + (and (find-string-from-port? "[DNS]" port) + (read-line port) ;past newline + (do ((line (read-line port) (read-line port))) + ((not (and (string? line) + (strsrch:string-index line #\=)))) + (sscanf line "HostName=%s" compname) + (sscanf line "DomainName=%s" workgroup))))) + (not user) + (call-with-input-file netdir + (lambda (port) + (and (find-string-from-port? "[Network]" port) + (read-line port) ;past newline + (do ((line (read-line port) (read-line port))) + ((not (and (string? line) + (strsrch:string-index line #\=)))) + (sscanf line "UserName=%s" user)))))) + (if (and compname (not hostname)) + (set! hostname + (string-append + compname "." (or workgroup "localnet")))))) + ;;((NOSVE) ) + ;;((VMS) ) + ((UNIX COHERENT) + (if (not user) + (set! user (command->string "whoami"))) + (if (not hostname) + (set! hostname (command->string "hostname"))))) + (if (not user) (set! user "John_Doe")) + (if (not hostname) (set! hostname "localhost"))))) + (string-append user "@" hostname)))) + +;;@args +;;@0 returns a string containing the absolute file name representing +;;the current working directory. If this string cannot be obtained, +;;#f is returned. +;; +;;If @0 cannot be supported by the platform, the value of @0 is +;;#f. +(define current-directory + (case (software-type) + ;;((AMIGA) ) + ;;((MACOS THINKC) ) + ((MS-DOS WINDOWS ATARIST OS/2) + (lambda () + (call-with-tmpnam + (lambda (tmp) + (and (zero? (system (string-append "cd >" tmp))) + (file-exists? tmp) + (call-with-input-file tmp + (lambda (port) + (let ((lst (scanf-read-list "%[^:]%[:] %s" port))) + (and (pair? lst) + (eqv? 3 (length lst)) + (apply string-append lst)))))))))) + ;;((NOSVE) ) + ((UNIX COHERENT) + (lambda () + (call-with-tmpnam + (lambda (tmp) + (and (zero? (system (string-append "pwd >" tmp))) + (file-exists? tmp) + (let ((path (call-with-input-file tmp read-line))) + (and (string? path) path))))))) + ;;((VMS) ) + (else #f))) + +;;@body +;;Creates a sub-directory @1 of the current-directory. If successful, +;;@0 returns #t; otherwise #f. +(define (make-directory name) + (zero? (system (string-append "mkdir " name)))) + +;;@body +;;Returns #t if changing directory to @1 makes the current working +;;directory the same as it is before changing directory; otherwise +;;returns #f. +(define (null-directory? file-name) + (member file-name '("" "." "./" ".\\"))) + +;;@body +;;Returns #t if @1 is a fully specified pathname (does not depend on +;;the current working directory); otherwise returns #f. +(define (absolute-path? file-name) + (and (string? file-name) + (positive? (string-length file-name)) + (memv (string-ref file-name 0) '(#\\ #\/)))) + + +;;@body Returns #t if the string @1 contains characters used for +;;specifying glob patterns, namely @samp{*}, @samp{?}, or @samp{[}. +(define (glob-pattern? str) + (let loop ((idx (+ -1 (string-length str)))) + (if (negative? idx) + #f + (case (string-ref str idx) + ((#\* #\[ #\?) #t) + (else (loop (+ -1 idx))))))) + +;;@body +;;Returns a list of the decoded FTP @1; or #f if indecipherable. FTP +;;@dfn{Uniform Resource Locator}, @dfn{ange-ftp}, and @dfn{getit} +;;formats are handled. The returned list has four elements which are +;;strings or #f: +;; +;;@enumerate 0 +;;@item +;;username +;;@item +;;password +;;@item +;;remote-site +;;@item +;;remote-directory +;;@end enumerate +(define (parse-ftp-address url) + (define length? (lambda (len lst) (and (eqv? len (length lst)) lst))) + (cond + ((not url) #f) + ((length? 1 (scanf-read-list " ftp://%s %s" url)) + => (lambda (host) + (let ((login #f) (path #f) (dross #f)) + (sscanf (car host) "%[^/]/%[^@]%s" login path dross) + (and login + (append (cond + ((length? 2 (scanf-read-list "%[^@]@%[^@]%s" login)) + => (lambda (userpass@hostport) + (append + (cond ((length? 2 (scanf-read-list + "%[^:]:%[^@/]%s" + (car userpass@hostport)))) + (else (list (car userpass@hostport) #f))) + (cdr userpass@hostport)))) + (else (list "anonymous" #f login))) + (list path)))))) + (else + (let ((user@site #f) (colon #f) (path #f) (dross #f)) + (case (sscanf url " %[^:]%[:]%[^@] %s" user@site colon path dross) + ((2 3) + (let ((user #f) (site #f)) + (cond ((or (eqv? 2 (sscanf user@site "/%[^@/]@%[^@]%s" + user site dross)) + (eqv? 2 (sscanf user@site "%[^@/]@%[^@]%s" + user site dross))) + (list user #f site path)) + ((eqv? 1 (sscanf user@site "@%[^@]%s" site dross)) + (list #f #f site path)) + (else (list #f #f user@site path))))) + (else + (let ((site (scanf-read-list " %[^@/] %s" url))) + (and (length? 1 site) (list #f #f (car site) #f))))))))) + +;;@body +;;@3 must be a non-empty string or #f. @1 must be a non-empty list +;;of pathnames or Glob patterns (@pxref{Filenames}) matching files to +;;transfer. +;; +;;@0 puts the files specified by @1 into the @5 directory of FTP @4 +;;using name @2 with (optional) @3. +;; +;;If @3 is #f and @2 is not @samp{ftp} or @samp{anonymous}, then @2 is +;;ignored; FTP takes the username and password from the @file{.netrc} +;;or equivalent file. +(define (ftp-upload paths user password remote-site remote-dir) + (call-with-tmpnam + (lambda (script logfile) + (define local-path (current-directory)) + (define passwd (or password (user-email-address))) + (dynamic-wind + (lambda () #f) + (lambda () + (call-with-current-continuation + (lambda (exit) + (define (run-ftp-script paths) + (call-with-output-file script + (lambda (port) + (define lcd "") + (cond ((or (member user '(ftp anonymous "ftp" "anonymous")) + password) + (fprintf port "user %s %s\n" user passwd))) + (fprintf port "binary\n") ; Turn binary ON for all transfers + ;;(fprintf port "prompt\n") ; Turn prompt OFF for possible mget + (if (not (null-directory? remote-dir)) + (fprintf port "cd %s\n" remote-dir)) + (for-each + (lambda (path-name) + (let* ((r/i (string-reverse-index path-name #\/)) + (dir (if r/i (substring path-name 0 (+ 1 r/i)) "")) + (file-name (if r/i + (substring path-name (+ 1 r/i) + (string-length path-name)) + path-name))) + (cond ((and r/i (glob-pattern? dir)) + (slib:warn + "Wildcard not allowed in directory component " + path-name) + (exit #f)) + ((and (not (glob-pattern? file-name)) + (not (file-exists? path-name))) + (slib:warn " file doesn't exist:" path-name) + (exit #f)) + ((equal? lcd dir)) + ((absolute-path? dir) + (fprintf port "lcd %s\n" dir)) + ((eqv? 0 (substring? lcd dir)) + (fprintf port "lcd %s\n" + (substring dir (string-length lcd) + (string-length dir)))) + (else + (fprintf port "lcd %s\n" local-path) + (if (not (null-directory? dir)) + (fprintf port "lcd %s\n" dir)))) + (set! lcd dir) + (cond ((glob-pattern? file-name) + (fprintf port "mput %s\n" file-name)) + (else + (fprintf port "put %s\n" file-name))))) + paths))) + ;;(display-file script) + (cond + ((zero? (system + (string-append + "ftp " + (if (or (member user '(ftp anonymous "ftp" "anonymous")) + password) + "-inv" "-iv") + " " remote-site + " <" script + " >" logfile))) + (file-exists? logfile) + (call-with-input-file logfile + (lambda (port) + (do ((line (read-line port) (read-line port))) + ((or (eof-object? line) + (substring-ci? "Unknown host" line) + (substring-ci? "Not connected" line) + (and (memv (string-ref line 0) '(#\4 #\5)) + (not (substring-ci? "bytes" line)))) + (cond ((eof-object? line) #t) + (else (slib:warn line) #f))) + ;;(write-line line) + )))) + (else (slib:warn 'ftp 'failed) #f))) + (cond ((or local-path (every? absolute-file? paths)) + (run-ftp-script paths)) + (else (for-each (lambda (path) (run-ftp-script (list path))) + paths)))))) + (lambda () + (if (file-exists? script) (delete-file script)) + (if (file-exists? logfile) (delete-file logfile))))) + 2)) + +;;@body +;;Returns a URL-string for @1 on the local host. +(define (path->url path) + (if (absolute-path? path) + (sprintf #f "file:%s" path) + (sprintf #f "file:%s/%s" (current-directory) path))) + +;;@body +;;If a @samp{netscape} browser is running, @0 causes the browser to +;;display the page specified by string @1 and returns #t. +;; +;;If the browser is not running, @0 runs @samp{netscape} with the +;;argument @1. If the browser starts as a background job, @0 returns +;;#t immediately; if the browser starts as a foreground job, then @0 +;;returns #t when the browser exits; otherwise it returns #f. +(define (browse-url-netscape url) + (or (eqv? 0 (system (sprintf #f "netscape-remote -remote 'openURL(%s)'" url))) + (eqv? 0 (system (sprintf #f "netscape -remote 'openURL(%s)'" url))) + (eqv? 0 (system (sprintf #f "netscape '%s'&" url))) + (eqv? 0 (system (sprintf #f "netscape '%s'" url))))) |