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-;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
-;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of Guix.
-;;;
-;;; Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with Guix. If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (guix build http)
- #:use-module (web uri)
- #:use-module (web client)
- #:use-module (web response)
- #:use-module (rnrs io ports)
- #:use-module (srfi srfi-11)
- #:export (http-fetch))
-
-;;; Commentary:
-;;;
-;;; Fetch data such as tarballs over HTTP (builder-side code).
-;;;
-;;; Code:
-
-(define (open-connection-for-uri uri)
- "Return an open input/output port for a connection to URI.
-
-This is the same as Guile's `open-socket-for-uri', except that we always
-use a numeric port argument, to avoid the need to go through libc's NSS,
-which is not available during bootstrap."
- (define addresses
- (let ((port (or (uri-port uri)
- (case (uri-scheme uri)
- ((http) 80) ; /etc/services, not for me!
- (else
- (error "unsupported URI scheme" uri))))))
- (getaddrinfo (uri-host uri)
- (number->string port)
- AI_NUMERICSERV)))
-
- (let loop ((addresses addresses))
- (let* ((ai (car addresses))
- (s (with-fluids ((%default-port-encoding #f))
- (socket (addrinfo:fam ai) (addrinfo:socktype ai)
- (addrinfo:protocol ai)))))
- (catch 'system-error
- (lambda ()
- (connect s (addrinfo:addr ai))
-
- ;; Buffer input and output on this port.
- (setvbuf s _IOFBF)
- ;; Enlarge the receive buffer.
- (setsockopt s SOL_SOCKET SO_RCVBUF (* 12 1024))
- s)
- (lambda args
- ;; Connection failed, so try one of the other addresses.
- (close s)
- (if (null? addresses)
- (apply throw args)
- (loop (cdr addresses))))))))
-
-;; XXX: This is an awful hack to make sure the (set-port-encoding! p
-;; "ISO-8859-1") call in `read-response' passes, even during bootstrap
-;; where iconv is not available.
-(module-define! (resolve-module '(web response))
- 'set-port-encoding!
- (lambda (p e) #f))
-
-(define (http-fetch url file)
- "Fetch data from URL and write it to FILE. Return FILE on success."
-
- (setvbuf (current-output-port) _IOLBF)
- (format #t "starting HTTP download of `~a' from `~a'...~%" file url)
-
- ;; FIXME: Use a variant of `http-get' that returns a port instead of
- ;; loading everything in memory.
- (let*-values (((uri)
- (string->uri url))
- ((connection)
- (open-connection-for-uri uri))
- ((resp bv)
- (http-get uri #:port connection #:decode-body? #f))
- ((code)
- (response-code resp)))
- (if (= 200 code)
- (begin
- (call-with-output-file file
- (lambda (p)
- (put-bytevector p bv)))
- file)
- (error "download failed" url
- code (response-reason-phrase resp)))))