NetBSD/usr.sbin/pkg_install/delete/perform.c

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/* $NetBSD: perform.c,v 1.31 2000/05/07 00:33:28 hubertf Exp $ */
1997-10-17 18:53:18 +04:00
#include <sys/cdefs.h>
#ifndef lint
#if 0
static const char *rcsid = "from FreeBSD Id: perform.c,v 1.15 1997/10/13 15:03:52 jkh Exp";
#else
__RCSID("$NetBSD: perform.c,v 1.31 2000/05/07 00:33:28 hubertf Exp $");
#endif
#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 delete module.
*
*/
/*
* Copyright (c) 1999 Christian E. Hopps
* All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR 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.
*
* Added the require find and require delete code
*/
#include <err.h>
#include <fcntl.h>
#include "lib.h"
#include "delete.h"
/* In which direction to search in require_find() */
typedef enum {
FIND_UP, FIND_DOWN
} rec_find_t;
static int require_find_recursive_up(lpkg_t *);
static int require_find_recursive_down(lpkg_t *, package_t *);
static int require_find(char *, rec_find_t);
static int require_delete(char *, int);
static void require_print(void);
static int undepend(const char *deppkgname, char *pkg2delname);
static char LogDir[FILENAME_MAX];
static char linebuf[FILENAME_MAX];
static char pkgdir[FILENAME_MAX];
static package_t Plist;
static lpkg_head_t lpfindq;
static lpkg_head_t lpdelq;
/*
* Called to see if pkg is already installed as some other version,
* note found version in "note".
*/
static int
note_whats_installed(const char *found, char *note)
{
(void) strcpy(note, found);
return 0;
}
static void
sanity_check(char *pkg)
{
if (!fexists(CONTENTS_FNAME)) {
cleanup(0);
errx(2, "installed package %s has no %s file!",
pkg, CONTENTS_FNAME);
}
}
void
cleanup(int sig)
{
/* Nothing to do */
if (sig) /* in case this is ever used as a signal handler */
exit(1);
}
/*
* deppkgname is the pkg from which's +REQUIRED_BY file we are
* about to remove pkg2delname. This function is called from
* findmatchingname(), deppkgname is expanded from a (possible) pattern.
*/
int
undepend(const char *deppkgname, char *pkg2delname)
{
char fname[FILENAME_MAX], ftmp[FILENAME_MAX];
char fbuf[FILENAME_MAX];
FILE *fp, *fpwr;
char *tmp;
int s;
(void) snprintf(fname, sizeof(fname), "%s/%s/%s",
(tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR,
deppkgname, REQUIRED_BY_FNAME);
fp = fopen(fname, "r");
if (fp == NULL) {
warnx("couldn't open dependency file `%s'", fname);
return 0;
}
(void) snprintf(ftmp, sizeof(ftmp), "%s.XXXXXX", fname);
s = mkstemp(ftmp);
if (s == -1) {
fclose(fp);
warnx("couldn't open temp file `%s'", ftmp);
return 0;
}
fpwr = fdopen(s, "w");
if (fpwr == NULL) {
close(s);
fclose(fp);
warnx("couldn't fdopen temp file `%s'", ftmp);
remove(ftmp);
return 0;
}
while (fgets(fbuf, sizeof(fbuf), fp) != NULL) {
if (fbuf[strlen(fbuf) - 1] == '\n')
fbuf[strlen(fbuf) - 1] = '\0';
if (strcmp(fbuf, pkg2delname)) /* no match */
fputs(fbuf, fpwr), putc('\n', fpwr);
}
(void) fclose(fp);
if (fchmod(s, 0644) == FAIL) {
warnx("error changing permission of temp file `%s'", ftmp);
fclose(fpwr);
remove(ftmp);
return 0;
}
if (fclose(fpwr) == EOF) {
warnx("error closing temp file `%s'", ftmp);
remove(ftmp);
return 0;
}
if (rename(ftmp, fname) == -1)
warnx("error renaming `%s' to `%s'", ftmp, fname);
remove(ftmp); /* just in case */
return 0;
}
/*
* Delete from directory 'home' all packages on lpkg_list.
* If tryall is set, ignore errors from pkg_delete(1).
*/
int
require_delete(char *home, int tryall)
{
lpkg_t *lpp;
int rv, fail;
char *tmp;
int oldcwd;
/* save cwd */
oldcwd = open(".", O_RDONLY, 0);
if (oldcwd == -1)
err(1, "cannot open \".\"");
(void) snprintf(pkgdir, sizeof(pkgdir), "%s",
(tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR);
/* walk list of things to delete */
fail = 0;
lpp = TAILQ_FIRST(&lpdelq);
for (; lpp; lpp = TAILQ_NEXT(lpp, lp_link)) {
int rm_installed; /* delete expanded pkg, not @pkgdep value */
char installed[FILENAME_MAX];
/* go to the db dir */
if (chdir(pkgdir) == FAIL) {
warnx("unable to change directory to %s, deinstall failed (1)",
pkgdir);
fail = 1;
break;
}
/* look to see if package was already deleted */
rm_installed = 0;
if (ispkgpattern(lpp->lp_name)) {
if (findmatchingname(".", lpp->lp_name, note_whats_installed, installed) != 1) {
warnx("%s appears to have been deleted", lpp->lp_name);
continue;
}
rm_installed = 1;
} else {
if (!fexists(lpp->lp_name)) {
warnx("%s appears to have been deleted", lpp->lp_name);
continue;
}
}
/* return home for execution of command */
if (chdir(home) == FAIL) {
warnx("unable to change directory to %s, deinstall failed (2)", home);
fail = 1;
break;
}
if (Verbose)
printf("deinstalling %s\n", rm_installed?installed:lpp->lp_name);
/* delete the package */
if (Fake)
rv = 0;
else
rv = vsystem("%s %s %s %s %s %s %s %s %s", ProgramPath,
Prefix ? "-p" : "",
Prefix ? Prefix : "",
Verbose ? "-v" : "",
Force ? "-f" : "",
NoDeInstall ? "-D" : "",
CleanDirs ? "-d" : "",
Fake ? "-n" : "",
rm_installed?installed:lpp->lp_name);
/* check for delete failure */
if (rv && !tryall) {
fail = 1;
warnx("had problem removing %s%s", rm_installed?installed:lpp->lp_name,
Force ? ", continuing" : "");
if (!Force)
break;
}
}
/* cleanup list */
while ((lpp = TAILQ_FIRST(&lpdelq))) {
TAILQ_REMOVE(&lpdelq, lpp, lp_link);
free_lpkg(lpp);
}
/* return to the log dir */
if (fchdir(oldcwd) == FAIL) {
warnx("unable to change to previous directory, deinstall failed");
fail = 1;
}
return (fail);
}
/*
* Recursively find all packages "up" the tree (follow +REQUIRED_BY).
* Return 1 on errors
*/
int
require_find_recursive_up(lpkg_t *thislpp)
{
lpkg_head_t reqq;
lpkg_t *lpp = NULL;
FILE *cfile;
char *nl, *tmp;
/* see if we are on the find queue -- circular dependency */
if ((lpp = find_on_queue(&lpfindq, thislpp->lp_name))) {
warnx("circular dependency found for pkg %s", lpp->lp_name);
return (1);
}
TAILQ_INIT(&reqq);
(void) snprintf(pkgdir, sizeof(pkgdir), "%s/%s",
(tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR, thislpp->lp_name);
/* change to package's dir */
if (chdir(pkgdir) == FAIL) {
warnx("unable to change directory to %s! deinstall failed", pkgdir);
return (1);
}
/* terminate recursion if no required by's */
if (isemptyfile(REQUIRED_BY_FNAME))
return (0);
/* get packages that directly require us */
cfile = fopen(REQUIRED_BY_FNAME, "r");
if (!cfile) {
warnx("cannot open requirements file `%s'", REQUIRED_BY_FNAME);
return (1);
}
while (fgets(linebuf, sizeof(linebuf), cfile)) {
if ((nl = strrchr(linebuf, '\n')))
*nl = 0;
lpp = alloc_lpkg(linebuf);
TAILQ_INSERT_TAIL(&reqq, lpp, lp_link);
}
fclose(cfile);
/* put ourselves on the top of the find queue */
TAILQ_INSERT_HEAD(&lpfindq, thislpp, lp_link);
while ((lpp = TAILQ_FIRST(&reqq))) {
/* remove a direct req from our queue */
TAILQ_REMOVE(&reqq, lpp, lp_link);
/* find direct required requires */
if (require_find_recursive_up(lpp))
goto fail;
/* all requires taken care of, add to tail of delete queue
* if not already there */
if (find_on_queue(&lpdelq, lpp->lp_name))
free_lpkg(lpp);
else
TAILQ_INSERT_TAIL(&lpdelq, lpp, lp_link);
}
/* take ourselves off the find queue */
TAILQ_REMOVE(&lpfindq, thislpp, lp_link);
return (0);
fail:
while ((lpp = TAILQ_FIRST(&reqq))) {
TAILQ_REMOVE(&reqq, lpp, lp_link);
free_lpkg(lpp);
}
return (1);
}
/*
* Recursively find all packages "down" the tree (follow @pkgdep).
* Return 1 on errors
*/
int
require_find_recursive_down(lpkg_t *thislpp, package_t *plist)
{
plist_t *p;
lpkg_t *lpp, *lpp2;
lpkg_head_t reqq;
int rc, fail = 0;
/* see if we are on the find queue -- circular dependency */
if ((lpp = find_on_queue(&lpfindq, thislpp->lp_name))) {
warnx("circular dependency found for pkg %s", lpp->lp_name);
return (1);
}
TAILQ_INIT(&reqq);
/* width-first scan */
/* first enqueue all @pkgdep's to lpdelq, then (further below)
* go in recursively */
for (p = plist->head; p; p = p->next) {
switch (p->type) {
case PLIST_PKGDEP:
lpp = alloc_lpkg(p->name);
TAILQ_INSERT_TAIL(&reqq, lpp, lp_link);
lpp2 = find_on_queue(&lpdelq, p->name);
if (lpp2)
TAILQ_REMOVE(&lpdelq, lpp2, lp_link);
lpp = alloc_lpkg(p->name);
TAILQ_INSERT_TAIL(&lpdelq, lpp, lp_link);
break;
default:
break;
}
}
while ((lpp = TAILQ_FIRST(&reqq))) {
FILE *cfile;
package_t rPlist;
char *tmp;
plist_t *p;
/* remove a direct req from our queue */
TAILQ_REMOVE(&reqq, lpp, lp_link);
/* Reset some state */
rPlist.head = NULL;
rPlist.tail = NULL;
/* prepare for recursion */
chdir ((tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR);
if (ispkgpattern(lpp->lp_name)) {
char installed[FILENAME_MAX];
if (findmatchingname(".", lpp->lp_name, note_whats_installed, installed) != 1) {
warnx("cannot remove dependency for pkg-pattern %s", lpp->lp_name);
fail = 1;
goto fail;
}
if (chdir(installed) == -1) {
warnx("can't chdir to %s", installed);
fail = 1;
goto fail;
}
sanity_check(installed);
} else {
if (chdir(lpp->lp_name) == -1) {
warnx("cannot remove dependency from %s", lpp->lp_name);
fail = 1;
goto fail;
}
sanity_check(lpp->lp_name);
}
cfile = fopen(CONTENTS_FNAME, "r");
if (!cfile) {
warn("unable to open '%s' file", CONTENTS_FNAME);
fail = 1;
goto fail;
}
/* If we have a prefix, add it now */
if (Prefix)
add_plist(&rPlist, PLIST_CWD, Prefix);
read_plist(&rPlist, cfile);
fclose(cfile);
p = find_plist(&rPlist, PLIST_CWD);
if (!p) {
warnx("package '%s' doesn't have a prefix", lpp->lp_name);
fail = 1;
goto fail;
}
/* put ourselves on the top of the find queue */
TAILQ_INSERT_HEAD(&lpfindq, thislpp, lp_link);
rc = require_find_recursive_down(lpp, &rPlist);
if (rc) {
fail = 1;
goto fail;
}
/* take ourselves off the find queue */
TAILQ_REMOVE(&lpfindq, thislpp, lp_link);
free_lpkg(lpp);
}
fail:
/* Clean out reqq */
while ((lpp = TAILQ_FIRST(&reqq))) {
TAILQ_REMOVE(&reqq, lpp, lp_link);
free_lpkg(lpp);
}
return fail;
}
/*
* Start recursion in the one or other direction.
*/
int
require_find(char *pkg, rec_find_t updown)
{
lpkg_t *lpp;
int rv = 0;
TAILQ_INIT(&lpfindq);
TAILQ_INIT(&lpdelq);
lpp = alloc_lpkg(pkg);
switch (updown) {
case FIND_UP:
rv = require_find_recursive_up(lpp);
break;
case FIND_DOWN:
rv = require_find_recursive_down(lpp, &Plist);
break;
}
free_lpkg(lpp);
return (rv);
}
void
require_print(void)
{
lpkg_t *lpp;
/* print all but last -- deleting if requested */
while ((lpp = TAILQ_FIRST(&lpdelq))) {
TAILQ_REMOVE(&lpdelq, lpp, lp_link);
fprintf(stderr, "\t%s\n", lpp->lp_name);
free_lpkg(lpp);
}
}
/*
* This is seriously ugly code following. Written very fast!
*/
static int
pkg_do(char *pkg)
{
FILE *cfile;
char home[FILENAME_MAX];
plist_t *p;
char *tmp;
/* Reset some state */
if (Plist.head)
free_plist(&Plist);
(void) snprintf(LogDir, sizeof(LogDir), "%s/%s", (tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR,
pkg);
if (!fexists(LogDir) || !isdir(LogDir)) {
{
/* Check if the given package name matches something
* with 'pkg-[0-9]*' */
char try[FILENAME_MAX];
snprintf(try, FILENAME_MAX, "%s-[0-9]*", pkg);
if (findmatchingname(_pkgdb_getPKGDB_DIR(), try,
find_fn, NULL) != 0) {
return 0; /* we've just appended some names to the pkgs list,
* they will be processed after this package. */
}
}
/* No match */
warnx("package '%s' not installed", pkg);
return 1;
}
if (!getcwd(home, FILENAME_MAX)) {
cleanup(0);
errx(2, "unable to get current working directory!");
}
if (chdir(LogDir) == FAIL) {
warnx("unable to change directory to %s! deinstall failed", LogDir);
return 1;
}
if (!isemptyfile(REQUIRED_BY_FNAME)) {
/* This package is required by others. Either nuke
* them (-r), or stop. */
if (!Recurse_up)
warnx("package `%s' is required by other packages:", pkg);
else if (Verbose)
printf("Building list of packages that require `%s'"
" to deinstall\n", pkg);
if (require_find(pkg, FIND_UP)) {
if (!Force || Recurse_up)
return (1);
}
chdir(LogDir); /* CWD was changed by require_find() */
if (!Recurse_up) {
require_print();
if (!Force)
return 1;
} else
require_delete(home, 0);
}
sanity_check(LogDir);
cfile = fopen(CONTENTS_FNAME, "r");
if (!cfile) {
warnx("unable to open '%s' file", CONTENTS_FNAME);
return 1;
}
/* If we have a prefix, add it now */
if (Prefix)
add_plist(&Plist, PLIST_CWD, Prefix);
read_plist(&Plist, cfile);
fclose(cfile);
p = find_plist(&Plist, PLIST_CWD);
if (!p) {
warnx("package '%s' doesn't have a prefix", pkg);
return 1;
}
setenv(PKG_PREFIX_VNAME, p->name, 1);
if (fexists(REQUIRE_FNAME)) {
if (Verbose)
printf("Executing 'require' script.\n");
vsystem("%s +x %s", CHMOD, REQUIRE_FNAME); /* be sure */
if (vsystem("./%s %s DEINSTALL", REQUIRE_FNAME, pkg)) {
warnx("package %s fails requirements %s", pkg,
Force ? "" : "- not deleted");
if (!Force)
return 1;
}
}
if (!NoDeInstall && fexists(DEINSTALL_FNAME)) {
if (Fake)
printf("Would execute de-install script at this point (arg: DEINSTALL).\n");
else {
vsystem("%s +x %s", CHMOD, DEINSTALL_FNAME); /* make sure */
if (vsystem("./%s %s DEINSTALL", DEINSTALL_FNAME, pkg)) {
warnx("deinstall script returned error status");
if (!Force)
return 1;
}
}
}
if (!Fake) {
/* Some packages aren't packed right, so we need to just ignore delete_package()'s status. Ugh! :-( */
if (delete_package(FALSE, CleanDirs, &Plist) == FAIL)
warnx(
"couldn't entirely delete package (perhaps the packing list is\n"
"incorrectly specified?)");
}
/* Remove this package from the +REQUIRED_BY list of the packages this depends on */
for (p = Plist.head; p; p = p->next) {
if (p->type != PLIST_PKGDEP)
continue;
if (Verbose)
printf("Attempting to remove dependency on package `%s'\n", p->name);
if (!Fake)
findmatchingname((tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR,
p->name, undepend, pkg);
}
if (Recurse_down) {
/* Also remove the packages further down, now that there's
* (most likely) nothing left which requires them. */
if (Verbose)
printf("Building list of packages that `%s' required\n", pkg);
if (require_find(pkg, FIND_DOWN))
return (1);
require_delete(home, 1);
}
if (!NoDeInstall && fexists(DEINSTALL_FNAME)) {
if (Fake)
printf("Would execute post-de-install script at this point (arg: POST-DEINSTALL).\n");
else {
vsystem("chmod +x %s", DEINSTALL_FNAME); /* make sure */
if (vsystem("./%s %s POST-DEINSTALL", DEINSTALL_FNAME, pkg)) {
warnx("post-deinstall script returned error status");
if (!Force)
return 1;
}
}
}
/* Change out of LogDir before we remove it */
if (chdir(home) == FAIL) {
cleanup(0);
errx(2, "Toto! This doesn't look like Kansas anymore!");
}
if (!Fake) {
/* Finally nuke the +-files and the pkgdb-dir (/var/db/pkg/foo) */
if (vsystem("%s -r %s", REMOVE_CMD, LogDir)) {
warnx("couldn't remove log entry in %s, deinstall failed", LogDir);
if (!Force)
return 1;
}
}
return 0;
}
int
pkg_perform(lpkg_head_t *pkgs)
{
int err_cnt = 0;
int oldcwd;
lpkg_t *lpp;
/* save cwd */
oldcwd = open(".", O_RDONLY, 0);
if (oldcwd == -1)
err(1, "cannot open \".\"");
while ((lpp = TAILQ_FIRST(pkgs))) {
err_cnt += pkg_do(lpp->lp_name);
TAILQ_REMOVE(pkgs, lpp, lp_link);
free_lpkg(lpp);
if (fchdir(oldcwd) == FAIL)
err(1, "unable to change to previous directory");
}
return err_cnt;
}