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|
/* $OpenBSD: perform.c,v 1.13 2001/11/26 05:04:33 deraadt Exp $ */
#ifndef lint
static const char *rcsid = "$OpenBSD: perform.c,v 1.13 2001/11/26 05:04:33 deraadt Exp $";
#endif
/*
* 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
*
* This is the main body of the create module.
*
*/
#include "lib.h"
#include "create.h"
#include <sys/syslimits.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
static void sanity_check(void);
static void make_dist(char *, char *, char *, package_t *);
static char *home;
int
pkg_perform(char **pkgs)
{
char *pkg = *pkgs; /* Only one arg to create */
char *cp;
FILE *pkg_in, *fp;
package_t plist;
char *suffix; /* What we tack on to the end of the finished package */
/* Preliminary setup */
sanity_check();
if (Verbose && !PlistOnly)
printf("Creating package %s\n", pkg);
get_dash_string(&Comment);
if (strlen(Comment) > MAXINDEXSIZE && !PlistOnly) {
errx(2,"Comment string is over %d characters long:\n%s",
MAXINDEXSIZE, Comment);
}
get_dash_string(&Desc);
if (!strcmp(Contents, "-"))
pkg_in = stdin;
else {
pkg_in = fopen(Contents, "r");
if (!pkg_in) {
cleanup(0);
errx(2, "unable to open contents file '%s' for input", Contents);
}
}
plist.head = plist.tail = NULL;
/* Break the package name into base and desired suffix (if any) */
if ((cp = strrchr(pkg, '.')) != NULL) {
suffix = cp + 1;
*cp = '\0';
}
else
suffix = "tgz";
/* If a SrcDir override is set, add it now */
if (SrcDir) {
if (Verbose && !PlistOnly)
printf("Using SrcDir value of %s\n", SrcDir);
add_plist(&plist, PLIST_SRC, SrcDir);
}
/* Stick the dependencies, if any, at the top */
if (Pkgdeps) {
if (Verbose && !PlistOnly)
printf("Registering depends:");
while (Pkgdeps) {
cp = strsep(&Pkgdeps, " \t\n");
if (*cp) {
add_plist(&plist, PLIST_PKGDEP, cp);
if (Verbose && !PlistOnly)
printf(" %s", cp);
}
}
if (Verbose && !PlistOnly)
printf(".\n");
}
/* Put the conflicts directly after the dependencies, if any */
if (Pkgcfl) {
if (Verbose && !PlistOnly)
printf("Registering conflicts:");
while (Pkgcfl) {
cp = strsep(&Pkgcfl, " \t\n");
if (*cp) {
add_plist(&plist, PLIST_PKGCFL, cp);
if (Verbose && !PlistOnly)
printf(" %s", cp);
}
}
if (Verbose && !PlistOnly)
printf(".\n");
}
/* Slurp in the packing list */
read_plist(&plist, pkg_in);
/* Prefix should override the packing list */
if (Prefix) {
delete_plist(&plist, FALSE, PLIST_CWD, NULL);
add_plist_top(&plist, PLIST_CWD, Prefix);
}
/*
* Run down the list and see if we've named it, if not stick in a name
* at the top.
*/
if (find_plist(&plist, PLIST_NAME) == NULL)
add_plist_top(&plist, PLIST_NAME, basename_of(pkg));
/*
* We're just here for to dump out a revised plist for the FreeBSD ports
* hack. It's not a real create in progress.
*/
if (PlistOnly) {
check_list(home, &plist);
write_plist(&plist, stdout);
exit(0);
}
/* Make a directory to stomp around in */
home = make_playpen(PlayPen, PlayPenSize, 0);
signal(SIGINT, cleanup);
signal(SIGHUP, cleanup);
/* Make first "real contents" pass over it */
check_list(home, &plist);
(void) umask(022); /* make sure gen'ed directories, files don't have
group or other write bits. */
/* copy_plist(home, &plist); */
/* mark_plist(&plist); */
/* Now put the release specific items in */
add_plist(&plist, PLIST_CWD, ".");
write_file(COMMENT_FNAME, Comment);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, COMMENT_FNAME);
write_file(DESC_FNAME, Desc);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, DESC_FNAME);
if (Install) {
copy_file(home, Install, INSTALL_FNAME);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, INSTALL_FNAME);
}
if (DeInstall) {
copy_file(home, DeInstall, DEINSTALL_FNAME);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, DEINSTALL_FNAME);
}
if (Require) {
copy_file(home, Require, REQUIRE_FNAME);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, REQUIRE_FNAME);
}
if (Display) {
copy_file(home, Display, DISPLAY_FNAME);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, DISPLAY_FNAME);
add_plist(&plist, PLIST_DISPLAY, DISPLAY_FNAME);
}
if (Mtree) {
copy_file(home, Mtree, MTREE_FNAME);
add_plist(&plist, PLIST_IGNORE, NULL);
add_plist(&plist, PLIST_FILE, MTREE_FNAME);
add_plist(&plist, PLIST_MTREE, MTREE_FNAME);
}
/* Finally, write out the packing list */
fp = fopen(CONTENTS_FNAME, "w");
if (!fp) {
cleanup(0);
errx(2, "can't open file %s for writing", CONTENTS_FNAME);
}
write_plist(&plist, fp);
if (fclose(fp)) {
cleanup(0);
errx(2, "error while closing %s", CONTENTS_FNAME);
}
/* And stick it into a tar ball */
make_dist(home, pkg, suffix, &plist);
/* Cleanup */
free(Comment);
free(Desc);
free_plist(&plist);
leave_playpen(home);
return TRUE; /* Success */
}
static void
make_dist(char *home, char *pkg, char *suffix, package_t *plist)
{
char tball[FILENAME_MAX];
plist_t *p;
int ret;
#define DIST_MAX_ARGS 4096
char *args[DIST_MAX_ARGS];
char *tempfile[DIST_MAX_ARGS/2];
int current = 0;
FILE *flist = 0;
int nargs = 0;
int pipefds[2];
int i;
FILE *totar;
pid_t pid;
args[nargs++] = "tar"; /* argv[0] */
if (*pkg == '/')
snprintf(tball, FILENAME_MAX, "%s.%s", pkg, suffix);
else
snprintf(tball, FILENAME_MAX, "%s/%s.%s", home, pkg, suffix);
args[nargs++] = "-c";
args[nargs++] = "-f";
args[nargs++] = tball;
if (strchr(suffix, 'z')) /* Compress/gzip? */
args[nargs++] = "-z";
if (Dereference)
args[nargs++] = "-h";
if (ExcludeFrom) {
/* XXX this won't work until someone adds the gtar -X option
(--exclude-from-file) to paxtar - so long it is disabled
here and a warning is printed in main.c
args[nargs++] = "-X";
args[nargs++] = ExcludeFrom;
*/
}
if (Verbose)
if (strchr(suffix, 'z'))
printf("Creating gzip'd tar ball in '%s'\n", tball);
else
printf("Creating tar ball in '%s'\n", tball);
args[nargs++] = CONTENTS_FNAME;
args[nargs++] = COMMENT_FNAME;
args[nargs++] = DESC_FNAME;
if (Install)
args[nargs++] = INSTALL_FNAME;
if (DeInstall)
args[nargs++] = DEINSTALL_FNAME;
if (Require)
args[nargs++] = REQUIRE_FNAME;
if (Display)
args[nargs++] = DISPLAY_FNAME;
if (Mtree)
args[nargs++] = MTREE_FNAME;
for (p = plist->head; p; p = p->next) {
if (nargs > (DIST_MAX_ARGS - 2))
errx(2, "too many args for tar command");
if (p->type == PLIST_FILE) {
if (!flist) {
int fd;
tempfile[current] = strdup("/tmp/tpkg.XXXXXXXXXX");
if ((fd = mkstemp(tempfile[current])) == -1)
errx(2, "can't make temp file");
if (! (flist = fdopen(fd, "w")))
errx(2, "can't write to temp file");
args[nargs++] = "-I";
args[nargs++] = tempfile[current++];
}
fprintf(flist, "%s\n", p->name);
}
else if (p->type == PLIST_CWD || p->type == PLIST_SRC) {
/* XXX let PLIST_SRC override PLIST_CWD */
if (p->type == PLIST_CWD && p->next != NULL &&
p->next->type == PLIST_SRC)
continue;
if (flist)
fclose(flist);
flist = 0;
args[nargs++] = "-C";
args[nargs++] = p->name;
}
else if (p->type == PLIST_IGNORE)
p = p->next;
}
if (flist)
fclose(flist);
args[nargs] = NULL;
/* fork/exec tar to create the package */
pid = fork();
if ( pid < 0 )
err(2, "failed to fork");
else if ( pid == 0 ) {
execv("/bin/tar", args);
for (i = 0; i < current; i++)
unlink(tempfile[i]);
err(2, "failed to execute tar command");
}
wait(&ret);
for (i = 0; i < current; i++)
unlink(tempfile[i]);
/* assume either signal or bad exit is enough for us */
if (ret) {
cleanup(0);
errx(2, "tar command failed with code %d", ret);
}
}
static void
sanity_check()
{
if (!Comment) {
cleanup(0);
errx(2, "required package comment string is missing (-c comment)");
}
if (!Desc) {
cleanup(0);
errx(2, "required package description string is missing (-d desc)");
}
if (!Contents) {
cleanup(0);
errx(2, "required package contents list is missing (-f [-]file)");
}
}
/* Clean up those things that would otherwise hang around */
void
cleanup(int sig)
{
int save_errno = errno;
static int alreadyCleaning;
void (*oldint)(int);
void (*oldhup)(int);
char buf[1024];
oldint = signal(SIGINT, SIG_IGN);
oldhup = signal(SIGHUP, SIG_IGN);
if (!alreadyCleaning) {
alreadyCleaning = 1;
if (sig) {
snprintf(buf, sizeof buf, "Signal %d received, cleaning up.\n", sig);
write(STDOUT_FILENO, buf, strlen(buf));
}
leave_playpen(home);
if (sig)
_exit(1);
}
signal(SIGINT, oldint);
signal(SIGHUP, oldhup);
errno = save_errno;
}
|