444cbb04ee
recognize it any more. This makes the following significant changes: - The main body of the program doesn't know a thing about URIs, HTTP, or FTP. This makes it possible to easily plug in other protocols. (The next revision will probably be able to dynamically add new recognizers.) - There are no longer arbitrary timeouts for the protocols. If you want to set one for yourself, use the environment variables. - FTP proxies are now supported (if I implemented it right). - The HTTP implementation is much more complete, and can now do restarts, preserve modtimes, and mrun in mirror mode. It's not yet up to 1.1, but it's getting there. - Transaction TCP is now used for sending HTTP requests. The HTTP/1.1 syntax for requesting that the connection be closed after one request is implemented. In all of this, I have doubtless broken somebody. Please test it and tell me about the bugs.
145 lines
3.9 KiB
C
145 lines
3.9 KiB
C
/*-
|
|
* Copyright 1997 Massachusetts Institute of Technology
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and
|
|
* its documentation for any purpose and without fee is hereby
|
|
* granted, provided that both the above copyright notice and this
|
|
* permission notice appear in all copies, that both the above
|
|
* copyright notice and this permission notice appear in all
|
|
* supporting documentation, and that the name of M.I.T. not be used
|
|
* in advertising or publicity pertaining to distribution of the
|
|
* software without specific, written prior permission. M.I.T. makes
|
|
* no representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied
|
|
* warranty.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
|
|
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
|
|
* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/wait.h>
|
|
|
|
#include "fetch.h"
|
|
|
|
static int file_retrieve(struct fetch_state *fs);
|
|
static int file_close(struct fetch_state *fs);
|
|
static int file_parse(struct fetch_state *fs, const char *uri);
|
|
|
|
struct uri_scheme file_scheme =
|
|
{ "file", file_parse, 0, 0, 0 };
|
|
|
|
/*
|
|
* Again, we slightly misinterpret the slash after the hostname as
|
|
* being the start of the pathname rather than merely a separator.
|
|
*/
|
|
static int
|
|
file_parse(struct fetch_state *fs, const char *uri)
|
|
{
|
|
const char *p;
|
|
|
|
p = uri + 5; /* skip past `file:' */
|
|
if (p[0] == '/' && p[1] == '/') {
|
|
/* skip past `//localhost', if any */
|
|
p += 2;
|
|
while (*p && *p != '/')
|
|
p++;
|
|
}
|
|
|
|
if (p[0] != '/') {
|
|
warnx("`%s': expected absolute pathname in `file' URL", uri);
|
|
return EX_USAGE;
|
|
}
|
|
|
|
fs->fs_proto = percent_decode(p);
|
|
/* guaranteed to succeed because of above test */
|
|
p = strrchr(fs->fs_proto, '/');
|
|
if (fs->fs_outputfile == 0) /* only set if not overridden by user */
|
|
fs->fs_outputfile = p + 1;
|
|
fs->fs_retrieve = file_retrieve;
|
|
fs->fs_close = file_close;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
file_close(struct fetch_state *fs)
|
|
{
|
|
free(fs->fs_proto);
|
|
fs->fs_proto = 0;
|
|
fs->fs_outputfile = 0;
|
|
fs->fs_status = "free";
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
file_retrieve(struct fetch_state *fs)
|
|
{
|
|
/* XXX - this seems bogus to me! */
|
|
if (access(fs->fs_outputfile, F_OK) == 0) {
|
|
errno = EEXIST;
|
|
warn("%s", fs->fs_outputfile);
|
|
return EX_USAGE;
|
|
}
|
|
|
|
if (fs->fs_linkfile) {
|
|
fs->fs_status = "symlink";
|
|
if (symlink(fs->fs_proto, fs->fs_outputfile) == -1) {
|
|
warn("symlink");
|
|
return EX_OSERR;
|
|
}
|
|
fs->fs_status = "done";
|
|
} else {
|
|
pid_t pid;
|
|
int status;
|
|
|
|
fflush(stderr);
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
warn("fork");
|
|
return EX_TEMPFAIL;
|
|
} else if (pid == 0) {
|
|
execl(PATH_CP, "cp", "-p", fs->fs_proto,
|
|
fs->fs_outputfile, (char *)0);
|
|
warn("execl: " PATH_CP);
|
|
fflush(stderr);
|
|
_exit(EX_OSERR);
|
|
} else {
|
|
fs->fs_status = "copying";
|
|
if (waitpid(pid, &status, 0) < 0) {
|
|
warn("waitpid(%ld)", (long)pid);
|
|
return EX_OSERR;
|
|
}
|
|
if (WIFEXITED(status))
|
|
return WEXITSTATUS(status);
|
|
if (WIFSIGNALED(status))
|
|
warn(PATH_CP " exited on signal: %s",
|
|
sys_signame[WTERMSIG(status)]);
|
|
return EX_OSERR;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|