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