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(in-package :asdf-install)
(defvar *proxy* (posix-getenv "http_proxy"))
(defvar *cclan-mirror*
(or (posix-getenv "CCLAN_MIRROR")
"http://ftp.linux.org.uk/pub/lisp/cclan/"))
(defun directorify (name)
;; input name may or may not have a training #\/, but we know we
;; want a directory
(let ((path (pathname name)))
(if (pathname-name path)
(merge-pathnames
(make-pathname :directory `(:relative ,(pathname-name path)))
(make-pathname :directory (pathname-directory path)
:host (pathname-host path)))
path)))
(defvar *sbcl-home* (directorify (posix-getenv "SBCL_HOME")))
(defvar *dot-sbcl*
(merge-pathnames (make-pathname :directory '(:relative ".sbcl"))
(user-homedir-pathname)))
(defparameter *trusted-uids* nil)
(defun verify-gpg-signatures-p (url)
(labels ((prefixp (prefix string)
(let ((m (mismatch prefix string)))
(or (not m) (>= m (length prefix))))))
(case *verify-gpg-signatures*
(nil nil)
(:unknown-locations
(notany
(lambda (x) (prefixp x url))
(cons *cclan-mirror* *safe-url-prefixes*)))
(t t))))
(defvar *locations*
`((,(merge-pathnames "site/" *sbcl-home*)
,(merge-pathnames "site-systems/" *sbcl-home*)
"System-wide install")
(,(merge-pathnames "site/" *dot-sbcl*)
,(merge-pathnames "systems/" *dot-sbcl*)
"Personal installation")))
(let* ((*package* (find-package :asdf-install-customize))
(file (probe-file (merge-pathnames
(make-pathname :name ".asdf-install")
(user-homedir-pathname)))))
(when file (load file)))
(define-condition download-error (error)
((url :initarg :url :reader download-url)
(response :initarg :response :reader download-response))
(:report (lambda (c s)
(format s "Server responded ~A for GET ~A"
(download-response c) (download-url c)))))
(define-condition signature-error (error)
((cause :initarg :cause :reader signature-error-cause))
(:report (lambda (c s)
(format s "Cannot verify package signature: ~A"
(signature-error-cause c)))))
(define-condition gpg-error (error)
((message :initarg :message :reader gpg-error-message))
(:report (lambda (c s)
(format t "GPG failed with error status:~%~S"
(gpg-error-message c)))))
(define-condition no-signature (gpg-error) ())
(define-condition key-not-found (gpg-error)
((key-id :initarg :key-id :reader key-id))
(:report (lambda (c s)
(format s "No key found for key id 0x~A. Try some command like ~% gpg --recv-keys 0x~A"
(key-id c) (key-id c)))))
(define-condition key-not-trusted (gpg-error)
((key-id :initarg :key-id :reader key-id)
(key-user-name :initarg :key-user-name :reader key-user-name))
(:report (lambda (c s)
(format s "GPG warns that the key id 0x~A (~A) is not fully trusted"
(key-id c) (key-user-name c)))))
(define-condition author-not-trusted (gpg-error)
((key-id :initarg :key-id :reader key-id)
(key-user-name :initarg :key-user-name :reader key-user-name))
(:report (lambda (c s)
(format s "~A (key id ~A) is not on your package supplier list"
(key-user-name c) (key-id c)))))
(defun url-host (url)
(assert (string-equal url "http://" :end1 7))
(let* ((port-start (position #\: url :start 7))
(host-end (min (or (position #\/ url :start 7) (length url))
(or port-start (length url)))))
(subseq url 7 host-end)))
(defun url-port (url)
(assert (string-equal url "http://" :end1 7))
(let ((port-start (position #\: url :start 7)))
(if port-start (parse-integer url :start (1+ port-start) :junk-allowed t) 80)))
(defun url-connection (url)
(let ((s (make-instance 'inet-socket :type :stream :protocol :tcp))
(host (url-host url))
(port (url-port url)))
(declare (ignore port))
(socket-connect
s (car (host-ent-addresses (get-host-by-name (url-host (or *proxy* url)))))
(url-port (or *proxy* url)))
(let ((stream (socket-make-stream s :input t :output t :buffering :full :external-format :iso-8859-1)))
;; we are exceedingly unportable about proper line-endings here.
;; Anyone wishing to run this under non-SBCL should take especial care
(format stream "GET ~A HTTP/1.0~%Host: ~A~%Cookie: CCLAN-SITE=~A~%~%"
url host *cclan-mirror*)
(force-output stream)
(list
(let* ((l (read-line stream))
(space (position #\Space l)))
(parse-integer l :start (1+ space) :junk-allowed t))
(loop for line = (read-line stream nil nil)
until (or (null line) (eql (elt line 0) (code-char 13)))
collect
(let ((colon (position #\: line)))
(cons (intern (string-upcase (subseq line 0 colon)) :keyword)
(string-trim (list #\Space (code-char 13))
(subseq line (1+ colon))))))
stream))))
(defun download-files-for-package (package-name-or-url file-name)
(let ((url
(if (= (mismatch package-name-or-url "http://") 7)
package-name-or-url
(format nil "http://www.cliki.net/~A?download"
package-name-or-url))))
(destructuring-bind (response headers stream)
(block got
(loop
(destructuring-bind (response headers stream) (url-connection url)
(unless (member response '(301 302))
(return-from got (list response headers stream)))
(close stream)
(setf url (cdr (assoc :location headers))))))
(if (>= response 400)
(error 'download-error :url url :response response))
(let ((length (parse-integer
(or (cdr (assoc :content-length headers)) "")
:junk-allowed t)))
(format t "Downloading ~A bytes from ~A ..."
(if length length "some unknown number of") url)
(force-output)
(with-open-file (o file-name :direction :output :external-format :iso-8859-1)
(if length
(let ((buf (make-array length
:element-type
(stream-element-type stream))))
(read-sequence buf stream)
(write-sequence buf o))
(sb-executable:copy-stream stream o))))
(close stream)
(terpri)
(restart-case
(verify-gpg-signature/url url file-name)
(skip-gpg-check (&rest rest)
:report "Don't check GPG signature for this package"
nil)))))
(defun read-until-eof (stream)
(with-output-to-string (o)
(sb-executable:copy-stream stream o)))
(defun verify-gpg-signature/string (string file-name)
(let* ((proc
(sb-ext:run-program
"gpg"
(list
"--status-fd" "1" "--verify" "-"
(namestring file-name))
:output :stream :error :stream :search t
:input (make-string-input-stream string) :wait t))
(ret (process-exit-code proc))
(err (read-until-eof (process-error proc)))
tags)
(loop for l = (read-line (process-output proc) nil nil)
while l
when (> (mismatch l "[GNUPG:]") 6)
do (destructuring-bind (_ tag &rest data) (asdf::split l)
(pushnew (cons (intern tag :keyword)
data) tags)))
;; test for obvious key/sig problems
(let ((errsig (assoc :errsig tags)))
(and errsig (error 'key-not-found :key-id (second errsig) :gpg-err err)))
(let ((badsig (assoc :badsig tags)))
(and badsig (error 'key-not-found :key-id (second badsig) :gpg-err err)))
(let* ((good (assoc :goodsig tags))
(id (second good))
(name (format nil "~{~A~^ ~}" (nthcdr 2 good))))
;; good signature, but perhaps not trusted
(unless (or (assoc :trust_ultimate tags)
(assoc :trust_fully tags))
(cerror "Install the package anyway"
'key-not-trusted
:key-user-name name
:key-id id :gpg-err err))
(loop
(when
(restart-case
(or (assoc id *trusted-uids* :test #'equal)
(error 'author-not-trusted
:key-user-name name
:key-id id :gpg-err nil))
(add-key (&rest rest)
:report "Add to package supplier list"
(pushnew (list id name) *trusted-uids*)))
(return))))))
(defun verify-gpg-signature/url (url file-name)
(destructuring-bind (response headers stream)
(url-connection (concatenate 'string url ".asc"))
(unwind-protect
(if (= response 200)
(let ((data (make-string (parse-integer
(cdr (assoc :content-length headers))
:junk-allowed t))))
(read-sequence data stream)
(verify-gpg-signature/string data file-name))
(error 'download-error :url (concatenate 'string url ".asc")
:response response))
(close stream))))
(defun where ()
(format t "Install where?~%")
(loop for (source system name) in *locations*
for i from 1
do (format t "~A) ~A: ~% System in ~A~% Files in ~A ~%"
i name system source))
(format t " --> ") (force-output)
(let ((response (read)))
(when (> response 0)
(elt *locations* (1- response)))))
(defun install-package (source system packagename)
"Returns a list of asdf system names for installed asdf systems"
(ensure-directories-exist source )
(ensure-directories-exist system )
(let* ((tar
(with-output-to-string (o)
(or
(sb-ext:run-program #-darwin "tar"
#+darwin "gnutar"
(list "-C" (namestring source)
"-xzvf" (namestring packagename))
:output o
:search t
:wait t)
(error "can't untar"))))
(dummy (princ tar))
(pos-slash (position #\/ tar))
(*default-pathname-defaults*
(merge-pathnames
(make-pathname :directory
`(:relative ,(subseq tar 0 pos-slash)))
source)))
(declare (ignore dummy))
(loop for asd in (directory
(make-pathname :name :wild :type "asd"))
do (let ((target (merge-pathnames
(make-pathname :name (pathname-name asd)
:type (pathname-type asd))
system)))
(when (probe-file target)
(sb-posix:unlink target))
(sb-posix:symlink asd target))
collect (pathname-name asd))))
(defvar *temporary-files*)
(defun temp-file-name (p)
(let* ((pos-slash (position #\/ p :from-end t))
(pos-dot (position #\. p :start (or pos-slash 0))))
(merge-pathnames
(make-pathname
:name (subseq p (if pos-slash (1+ pos-slash) 0) pos-dot)
:type "asdf-install-tmp"))))
;; this is the external entry point
(defun install (&rest packages)
(let ((*temporary-files* nil)
(*trusted-uids*
(let ((p (merge-pathnames "trusted-uids.lisp" *dot-sbcl*)))
(when (probe-file p)
(with-open-file (f p) (read f))))))
(unwind-protect
(destructuring-bind (source system name) (where)
(labels ((one-iter (packages)
(dolist (asd
(loop for p in (mapcar 'string packages)
unless (probe-file p)
do (let ((tmp (temp-file-name p)))
(pushnew tmp *temporary-files*)
(download-files-for-package p tmp)
(setf p tmp))
end
do (format t "Installing ~A in ~A,~A~%"
p source system)
append (install-package source system p)))
(handler-bind
((asdf:missing-dependency
(lambda (c)
(format t
"Downloading package ~A, required by ~A~%"
(asdf::missing-requires c)
(asdf:component-name
(asdf::missing-required-by c)))
(one-iter (list
(symbol-name
(asdf::missing-requires c))))
(invoke-restart 'retry))))
(loop
(multiple-value-bind (ret restart-p)
(with-simple-restart
(retry "Retry installation")
(asdf:operate 'asdf:load-op asd))
(unless restart-p (return))))))))
(one-iter packages)))
(let ((p (merge-pathnames "trusted-uids.lisp" *dot-sbcl*)))
(ensure-directories-exist p)
(with-open-file (out p :direction :output :if-exists :supersede)
(with-standard-io-syntax
(prin1 *trusted-uids* out))))
(dolist (l *temporary-files*)
(when (probe-file l) (delete-file l))))))
(defun uninstall (system &optional (prompt t))
(let* ((asd (asdf:system-definition-pathname system))
(system (asdf:find-system system))
(dir (asdf::pathname-sans-name+type
(asdf::resolve-symlinks asd))))
(when (or (not prompt)
(y-or-n-p
"Delete system ~A~%asd file: ~A~%sources: ~A~%Are you sure?"
system asd dir))
(delete-file asd)
(asdf:run-shell-command "rm -r ~A" (namestring dir)))))
;;; some day we will also do UPGRADE, but we need to sort out version
;;; numbering a bit better first