aed4d2d137
concerning where they're taking place. Switch from [r]index() to str[r]chr() functions, which are more ISO compliant. Prompted by: Edward Welbourne <eddy@vortigen.demon.co.uk>
296 lines
7.2 KiB
C
296 lines
7.2 KiB
C
#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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/*
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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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* This is the main body of the delete module.
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*
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*/
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#include <err.h>
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#include "lib.h"
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#include "delete.h"
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static int pkg_do(char *);
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static void sanity_check(char *);
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static void undepend(PackingList, char *);
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static char LogDir[FILENAME_MAX];
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int
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pkg_perform(char **pkgs)
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{
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int i, err_cnt = 0;
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for (i = 0; pkgs[i]; i++)
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err_cnt += pkg_do(pkgs[i]);
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return err_cnt;
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}
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static Package Plist;
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/* This is seriously ugly code following. Written very fast! */
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static int
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pkg_do(char *pkg)
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{
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FILE *cfile;
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char home[FILENAME_MAX];
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PackingList p;
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char *tmp;
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int len;
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/* support for separate pre/post install scripts */
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int new_m = 0;
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char pre_script[FILENAME_MAX] = DEINSTALL_FNAME;
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char post_script[FILENAME_MAX];
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char pre_arg[FILENAME_MAX], post_arg[FILENAME_MAX];
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if (!pkg || !(len = strlen(pkg)))
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return 1;
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if (pkg[len - 1] == '/')
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pkg[len - 1] = '\0';
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/* Reset some state */
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if (Plist.head)
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free_plist(&Plist);
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sprintf(LogDir, "%s/%s", (tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR,
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pkg);
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if (!fexists(LogDir)) {
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warnx("no such package '%s' installed", pkg);
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return 1;
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}
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if (!getcwd(home, FILENAME_MAX)) {
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cleanup(0);
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errx(2, __FUNCTION__ ": unable to get current working directory!");
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}
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if (chdir(LogDir) == FAIL) {
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warnx("unable to change directory to %s! deinstall failed", LogDir);
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return 1;
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}
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if (!isemptyfile(REQUIRED_BY_FNAME)) {
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char buf[512];
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warnx("package `%s' is required by these other packages\n"
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"and may not be deinstalled%s:",
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pkg, Force ? " (but I'll delete it anyway)" : "" );
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cfile = fopen(REQUIRED_BY_FNAME, "r");
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if (cfile) {
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while (fgets(buf, sizeof(buf), cfile))
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fprintf(stderr, "%s", buf);
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fclose(cfile);
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} else
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warnx("cannot open requirements file `%s'", REQUIRED_BY_FNAME);
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if (!Force)
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return 1;
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}
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sanity_check(LogDir);
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cfile = fopen(CONTENTS_FNAME, "r");
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if (!cfile) {
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warnx("unable to open '%s' file", CONTENTS_FNAME);
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return 1;
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}
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/* If we have a prefix, add it now */
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if (Prefix)
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add_plist(&Plist, PLIST_CWD, Prefix);
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read_plist(&Plist, cfile);
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fclose(cfile);
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p = find_plist(&Plist, PLIST_CWD);
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if (!p) {
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warnx("package '%s' doesn't have a prefix", pkg);
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return 1;
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}
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setenv(PKG_PREFIX_VNAME, p->name, 1);
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if (fexists(REQUIRE_FNAME)) {
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if (Verbose)
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printf("Executing 'require' script.\n");
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vsystem("chmod +x %s", REQUIRE_FNAME); /* be sure */
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if (vsystem("./%s %s DEINSTALL", REQUIRE_FNAME, pkg)) {
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warnx("package %s fails requirements %s", pkg,
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Force ? "" : "- not deleted");
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if (!Force)
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return 1;
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}
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}
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/* Test whether to use the old method of passing tokens to deinstallation
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* scripts, and set appropriate variables..
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*/
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if (fexists(POST_DEINSTALL_FNAME)) {
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new_m = 1;
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sprintf(post_script, "%s", POST_DEINSTALL_FNAME);
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pre_arg[0] = '\0';
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post_arg[0] = '\0';
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} else {
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if (fexists(DEINSTALL_FNAME)) {
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sprintf(post_script, "%s", DEINSTALL_FNAME);
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sprintf(pre_arg, "DEINSTALL");
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sprintf(post_arg, "POST-DEINSTALL");
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}
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}
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if (!NoDeInstall && fexists(pre_script)) {
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if (Fake)
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printf("Would execute de-install script at this point.\n");
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else {
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vsystem("chmod +x %s", pre_script); /* make sure */
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if (vsystem("./%s %s %s", pre_script, pkg, pre_arg)) {
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warnx("deinstall script returned error status");
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if (!Force)
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return 1;
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}
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}
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}
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if (chdir(home) == FAIL) {
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cleanup(0);
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errx(2, __FUNCTION__ ": unable to return to working directory %s!", home);
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}
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if (!Fake) {
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/* Some packages aren't packed right, so we need to just ignore delete_package()'s status. Ugh! :-( */
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if (delete_package(FALSE, CleanDirs, &Plist) == FAIL)
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warnx(
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"couldn't entirely delete package (perhaps the packing list is\n"
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"incorrectly specified?)");
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}
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if (chdir(LogDir) == FAIL) {
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warnx("unable to change directory to %s! deinstall failed", LogDir);
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return 1;
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}
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if (!NoDeInstall && fexists(post_script)) {
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if (Fake)
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printf("Would execute post-deinstall script at this point.\n");
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else {
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vsystem("chmod +x %s", post_script); /* make sure */
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if (vsystem("./%s %s %s", post_script, pkg, post_arg)) {
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warnx("post-deinstall script returned error status");
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if (!Force)
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return 1;
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}
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}
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}
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if (chdir(home) == FAIL) {
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cleanup(0);
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errx(2, __FUNCTION__ ": unable to return to working directory %s!", home);
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}
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if (!Fake) {
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if (vsystem("%s -r%c %s", REMOVE_CMD, Force ? 'f' : ' ', LogDir)) {
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warnx("couldn't remove log entry in %s, deinstall failed", LogDir);
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if (!Force)
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return 1;
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}
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}
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for (p = Plist.head; p ; p = p->next) {
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if (p->type != PLIST_PKGDEP)
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continue;
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if (Verbose)
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printf("Attempting to remove dependency on package `%s'\n", p->name);
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if (!Fake)
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undepend(p, pkg);
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}
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return 0;
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}
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static void
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sanity_check(char *pkg)
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{
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if (!fexists(CONTENTS_FNAME)) {
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cleanup(0);
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errx(2, __FUNCTION__ ": installed package %s has no %s file!", pkg, CONTENTS_FNAME);
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}
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}
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void
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cleanup(int sig)
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{
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if (sig)
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exit(1);
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}
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static void
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undepend(PackingList p, char *pkgname)
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{
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char fname[FILENAME_MAX], ftmp[FILENAME_MAX];
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char fbuf[FILENAME_MAX];
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FILE *fp, *fpwr;
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char *tmp;
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int s;
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sprintf(fname, "%s/%s/%s",
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(tmp = getenv(PKG_DBDIR)) ? tmp : DEF_LOG_DIR,
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p->name, REQUIRED_BY_FNAME);
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fp = fopen(fname, "r");
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if (fp == NULL) {
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warnx("couldn't open dependency file `%s'", fname);
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return;
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}
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sprintf(ftmp, "%s.XXXXXX", fname);
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s = mkstemp(ftmp);
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if (s == -1) {
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fclose(fp);
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warnx("couldn't open temp file `%s'", ftmp);
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return;
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}
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fpwr = fdopen(s, "w");
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if (fpwr == NULL) {
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close(s);
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fclose(fp);
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warnx("couldn't fdopen temp file `%s'", ftmp);
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remove(ftmp);
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return;
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}
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while (fgets(fbuf, sizeof(fbuf), fp) != NULL) {
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if (fbuf[strlen(fbuf)-1] == '\n')
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fbuf[strlen(fbuf)-1] = '\0';
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if (strcmp(fbuf, pkgname)) /* no match */
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fputs(fbuf, fpwr), putc('\n', fpwr);
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}
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(void) fclose(fp);
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if (fchmod(s, 0644) == FAIL) {
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warnx("error changing permission of temp file `%s'", ftmp);
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fclose(fpwr);
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remove(ftmp);
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return;
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}
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if (fclose(fpwr) == EOF) {
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warnx("error closing temp file `%s'", ftmp);
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remove(ftmp);
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return;
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}
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if (rename(ftmp, fname) == -1)
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warnx("error renaming `%s' to `%s'", ftmp, fname);
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remove(ftmp); /* just in case */
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return;
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}
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