426 lines
11 KiB
C
426 lines
11 KiB
C
/*
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* FreeBSD install - a package for the installation and maintenance
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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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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(char *, 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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char **matched, **rb, **rbtmp;
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int errcode, i, j;
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int err_cnt = 0;
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struct reqr_by_entry *rb_entry;
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struct reqr_by_head *rb_list;
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if (MatchType != MATCH_EXACT) {
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matched = matchinstalled(MatchType, pkgs, &errcode);
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if (errcode != 0)
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return 1;
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/* Not reached */
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/*
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* Copy matched[] into pkgs[], because we'll need to use
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* matchinstalled() later on.
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*/
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if (matched != NULL) {
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pkgs = NULL;
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for (i = 0; matched[i] != NULL; i++) {
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pkgs = realloc(pkgs, sizeof(*pkgs) * (i + 2));
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pkgs[i] = strdup(matched[i]);
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}
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pkgs[i] = NULL;
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}
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else switch (MatchType) {
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case MATCH_GLOB:
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break;
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case MATCH_ALL:
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warnx("no packages installed");
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return 0;
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case MATCH_EREGEX:
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case MATCH_REGEX:
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warnx("no packages match pattern(s)");
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return 1;
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default:
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break;
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}
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}
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err_cnt += sortdeps(pkgs);
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for (i = 0; pkgs[i]; i++) {
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if (Recursive == TRUE) {
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errcode = requiredby(pkgs[i], &rb_list, FALSE, TRUE);
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if (errcode < 0) {
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err_cnt++;
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} else if (errcode > 0) {
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/*
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* Copy values from the rb_list queue into argv-like NULL
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* terminated list because requiredby() uses some static
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* storage, while pkg_do() below will call this function,
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* thus blowing our rb_list away.
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*/
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rbtmp = rb = alloca((errcode + 1) * sizeof(*rb));
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if (rb == NULL) {
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warnx("%s(): alloca() failed", __func__);
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err_cnt++;
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continue;
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}
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STAILQ_FOREACH(rb_entry, rb_list, link) {
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*rbtmp = alloca(strlen(rb_entry->pkgname) + 1);
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if (*rbtmp == NULL) {
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warnx("%s(): alloca() failed", __func__);
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err_cnt++;
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continue;
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}
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strcpy(*rbtmp, rb_entry->pkgname);
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rbtmp++;
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}
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*rbtmp = NULL;
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err_cnt += sortdeps(rb);
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for (j = 0; rb[j]; j++)
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err_cnt += pkg_do(rb[j]);
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}
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}
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err_cnt += pkg_do(pkgs[i]);
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}
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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 *deporigin, **deporigins = NULL, **depnames = NULL, ***depmatches, home[FILENAME_MAX];
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PackingList p;
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int i, len;
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int isinstalled;
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/* support for separate pre/post install scripts */
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int new_m = 0, dep_count = 0;
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const char *pre_script = DEINSTALL_FNAME;
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const char *post_script, *pre_arg, *post_arg;
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struct reqr_by_entry *rb_entry;
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struct reqr_by_head *rb_list;
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int fd;
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struct stat sb;
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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", LOG_DIR, pkg);
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isinstalled = isinstalledpkg(pkg);
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if (isinstalled == 0) {
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warnx("no such package '%s' installed", pkg);
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return 1;
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} else if (isinstalled < 0) {
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warnx("the package info for package '%s' is corrupt%s",
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pkg, Force ? " (but I'll delete it anyway)" : " (use -f to force removal)");
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if (!Force)
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return 1;
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if (!Fake) {
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if (vsystem("%s -rf %s", REMOVE_CMD, LogDir)) {
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warnx("couldn't remove log entry in %s, deinstall failed", LogDir);
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} else {
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warnx("couldn't completely deinstall package '%s',\n"
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"only the log entry in %s was removed", pkg, LogDir);
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}
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}
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return 0;
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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, "%s: unable to get current working directory!", __func__);
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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 (Interactive == TRUE) {
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int first, ch;
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(void)fprintf(stderr, "delete %s? ", pkg);
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(void)fflush(stderr);
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first = ch = getchar();
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while (ch != '\n' && ch != EOF)
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ch = getchar();
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if (first != 'y' && first != 'Y')
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return 0;
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/* Not reached */
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}
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if (requiredby(pkg, &rb_list, FALSE, TRUE) < 0)
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return 1;
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if (!STAILQ_EMPTY(rb_list)) {
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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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STAILQ_FOREACH(rb_entry, rb_list, link)
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fprintf(stderr, "%s\n", rb_entry->pkgname);
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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 ((fd = open(REQUIRE_FNAME, O_RDWR)) != -1) {
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fstat(fd, &sb);
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fchmod(fd, sb.st_mode | S_IXALL); /* be sure, chmod a+x */
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close(fd);
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if (Verbose)
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printf("Executing 'require' script.\n");
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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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/*
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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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post_script = POST_DEINSTALL_FNAME;
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pre_arg = post_arg = "";
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} else if (fexists(DEINSTALL_FNAME)) {
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post_script = DEINSTALL_FNAME;
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pre_arg = "DEINSTALL";
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post_arg = "POST-DEINSTALL";
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} else {
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post_script = pre_arg = post_arg = NULL;
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}
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if (!NoDeInstall && pre_script != NULL && (fd = open(pre_script, O_RDWR)) != -1) {
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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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fstat(fd, &sb);
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fchmod(fd, sb.st_mode | S_IXALL); /* be sure, chmod a+x */
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close(fd);
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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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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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deporigin = (p->next != NULL && p->next->type == PLIST_DEPORIGIN) ? p->next->name :
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NULL;
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if (Verbose) {
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printf("Trying to remove dependency on package '%s'", p->name);
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if (deporigin != NULL)
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printf(" with '%s' origin", deporigin);
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printf(".\n");
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}
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if (!Fake) {
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if (deporigin) {
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deporigins = realloc(deporigins, (dep_count + 2) * sizeof(*deporigins));
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depnames = realloc(depnames, (dep_count + 1) * sizeof(*depnames));
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deporigins[dep_count] = deporigin;
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deporigins[dep_count + 1] = NULL;
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depnames[dep_count] = p->name;
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dep_count++;
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} else {
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undepend(p->name, pkg);
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}
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}
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}
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if (dep_count > 0) {
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/* Undepend all the dependencies at once */
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depmatches = matchallbyorigin((const char **)deporigins, NULL);
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free(deporigins);
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if (depmatches) {
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for (i = 0; i < dep_count; i++) {
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if (depmatches[i]) {
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char **tmp = depmatches[i];
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int j;
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for (j = 0; tmp[j] != NULL; j++)
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undepend(tmp[j], pkg);
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} else if (depnames[i]) {
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undepend(depnames[i], pkg);
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}
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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, "%s: unable to return to working directory %s!", __func__,
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home);
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}
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/*
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* Some packages aren't packed right, so we need to just ignore
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* delete_package()'s status. Ugh! :-(
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*/
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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 `%s'\n"
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"(perhaps the packing list is incorrectly specified?)", pkg);
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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 && post_script != NULL && (fd = open(post_script, O_RDWR)) != -1) {
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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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fstat(fd, &sb);
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fchmod(fd, sb.st_mode | S_IXALL); /* be sure, chmod a+x */
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close(fd);
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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, "%s: unable to return to working directory %s!", __func__,
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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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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, "%s: installed package %s has no %s file!", __func__,
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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(char *p, char *pkgname)
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{
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char fname[FILENAME_MAX], ftmp[FILENAME_MAX];
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FILE *fpwr;
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int s;
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struct reqr_by_entry *rb_entry;
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struct reqr_by_head *rb_list;
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if (requiredby(p, &rb_list, Verbose, FALSE) <= 0)
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return;
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snprintf(fname, sizeof(fname), "%s/%s/%s", LOG_DIR, p, REQUIRED_BY_FNAME);
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snprintf(ftmp, sizeof(ftmp), "%s.XXXXXX", fname);
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s = mkstemp(ftmp);
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if (s == -1) {
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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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warnx("couldn't fdopen temp file '%s'", ftmp);
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goto cleanexit;
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}
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STAILQ_FOREACH(rb_entry, rb_list, link)
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if (strcmp(rb_entry->pkgname, pkgname)) /* no match */
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fputs(rb_entry->pkgname, fpwr), putc('\n', fpwr);
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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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goto cleanexit;
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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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goto cleanexit;
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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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cleanexit:
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remove(ftmp);
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return;
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}
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