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/*
* FreeBSD install - a package for the installation and maintainance
* of non-core utilities.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Jordan K. Hubbard
* 18 July 1993
*
* URL file access utilities.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "lib.h"
#include <err.h>
#include <fetch.h>
#include <sys/wait.h>
/*
* Try and fetch a file by URL, returning the directory name for where
* it's unpacked, if successful.
*/
char *
fileGetURL(const char *base, const char *spec)
{
char *cp, *rp;
char fname[FILENAME_MAX];
char pen[FILENAME_MAX];
char buf[8192];
FILE *ftp;
pid_t tpid;
int pfd[2], pstat, r, w;
char *hint;
int fd;
rp = NULL;
/* Special tip that sysinstall left for us */
hint = getenv("PKG_ADD_BASE");
if (!isURL(spec)) {
if (!base && !hint)
return NULL;
/*
* We've been given an existing URL (that's known-good) and now we need
* to construct a composite one out of that and the basename we were
* handed as a dependency.
*/
if (base) {
strcpy(fname, base);
/*
* Advance back two slashes to get to the root of the package
* hierarchy
*/
cp = strrchr(fname, '/');
if (cp) {
*cp = '\0'; /* chop name */
cp = strrchr(fname, '/');
}
if (cp) {
*(cp + 1) = '\0';
strcat(cp, "All/");
strcat(cp, spec);
/* XXX: need to handle .tgz also */
strcat(cp, ".tbz");
}
else
return NULL;
}
else {
/*
* Otherwise, we've been given an environment variable hinting
* at the right location from sysinstall
*/
strcpy(fname, hint);
strcat(fname, spec);
/* XXX: need to handle .tgz also */
strcat(fname, ".tbz");
}
}
else
strcpy(fname, spec);
if ((ftp = fetchGetURL(fname, Verbose ? "v" : NULL)) == NULL) {
printf("Error: FTP Unable to get %s: %s\n",
fname, fetchLastErrString);
return NULL;
}
if (isatty(0) || Verbose)
printf("Fetching %s...", fname), fflush(stdout);
pen[0] = '\0';
if ((rp = make_playpen(pen, 0)) == NULL) {
printf("Error: Unable to construct a new playpen for FTP!\n");
fclose(ftp);
return NULL;
}
if (pipe(pfd) == -1) {
warn("pipe()");
cleanup(0);
exit(2);
}
if ((tpid = fork()) == -1) {
warn("pipe()");
cleanup(0);
exit(2);
}
if (!tpid) {
dup2(pfd[0], 0);
for (fd = getdtablesize() - 1; fd >= 3; --fd)
close(fd);
/* XXX: need to handle .tgz also */
execl("/usr/bin/tar", "tar", Verbose ? "-xjvf" : "-xjf", "-",
(char *)0);
_exit(2);
}
close(pfd[0]);
for (;;) {
if ((r = fread(buf, 1, sizeof buf, ftp)) < 1)
break;
if ((w = write(pfd[1], buf, r)) != r)
break;
}
if (ferror(ftp))
warn("warning: error reading from server");
fclose(ftp);
close(pfd[1]);
if (w == -1)
warn("warning: error writing to tar");
tpid = waitpid(tpid, &pstat, 0);
if (Verbose)
printf("tar command returns %d status\n", WEXITSTATUS(pstat));
if (rp && (isatty(0) || Verbose))
printf(" Done.\n");
return rp;
}
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