/* $OpenBSD: perform.c,v 1.12 2003/04/04 08:56:01 avsm Exp $ */ #ifndef lint static const char *rcsid = "$OpenBSD: perform.c,v 1.12 2003/04/04 08:56:01 avsm 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 delete module. * */ #include #include #include #include "lib.h" #include "delete.h" static int pkg_do(char *); static void sanity_check(char *); static int undepend(const char *, char *, int); static char LogDir[FILENAME_MAX]; int pkg_perform(char **pkgs) { int i, err_cnt = 0; for (i = 0; pkgs[i]; i++) err_cnt += pkg_do(pkgs[i]); return err_cnt; } static package_t Plist; static int trim_end(char *name) { size_t n, m; n = strlen(name); m = strlen(".tgz"); if (n > m && strcmp(name+n-m, ".tgz") == 0) { name[n-m] = 0; return 1; } m = strlen(".tar.gz"); if (n > m && strcmp(name+n-m, ".tar.gz") == 0) { name[n-m] = 0; return 1; } m = strlen(".tar"); if (n > m && strcmp(name+n-m, ".tar") == 0) { name[n-m] = 0; return 1; } return 0; } /* remove all links to the package as well */ static void delete_pkg_links(const char *dir, const char *pkg) { int base; int len; DIR *d; struct dirent *dp; struct stat sb; char name[FILENAME_MAX+1]; base = open(".", O_RDONLY); if (base == -1) return; if (chdir(dir) == -1) { close(base); return; } d = opendir("."); if (d == NULL) { fchdir(base); close(base); return; } while ((dp = readdir(d)) != NULL) { if (lstat(dp->d_name, &sb) == -1 || !S_ISLNK(sb.st_mode)) continue; len = readlink(dp->d_name, name, FILENAME_MAX); if (len == -1) continue; name[len] = 0; if (strcmp(name, pkg)) continue; unlink(dp->d_name); } closedir(d); fchdir(base); close(base); } /* 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 *dbdir; set_pkg(pkg); /* Reset some state */ if (Plist.head) free_plist(&Plist); dbdir = getenv(PKG_DBDIR); if (!dbdir) dbdir = DEF_LOG_DIR; try_again: (void) snprintf(LogDir, sizeof(LogDir), "%s/%s", dbdir, pkg); if (!fexists(LogDir)) { if (trim_end(pkg)) goto try_again; else { pwarnx("no such package installed"); return 1; } } if (!getcwd(home, FILENAME_MAX)) { cleanup(0); errx(2, "unable to get current working directory!"); } if (chdir(LogDir) == FAIL) { pwarnx("unable to change directory to %s! deinstall failed", LogDir); return 1; } if (!isemptyfile(REQUIRED_BY_FNAME)) { char buf[512]; pwarnx("package `%s' is required by these other packages\n" "and may not be deinstalled%s:", pkg, Force ? " (but I'll delete it anyway)" : "" ); cfile = fopen(REQUIRED_BY_FNAME, "r"); if (cfile) { while (fgets(buf, sizeof(buf), cfile)) fprintf(stderr, "%s", buf); fclose(cfile); } else pwarnx("cannot open requirements file `%s'", REQUIRED_BY_FNAME); if (!Force) return 1; } sanity_check(LogDir); cfile = fopen(CONTENTS_FNAME, "r"); if (!cfile) { pwarnx("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) { pwarnx("package '%s' doesn't have a prefix", pkg); return 1; } { struct statfs buffer; if (statfs(p->name, &buffer) == -1) { pwarnx("package '%s' prefix (%s) does not exist", pkg, p->name); return 1; } if (buffer.f_flags & MNT_RDONLY) { pwarnx("package'%s' mount point %s is read-only", pkg, buffer.f_mntonname); return 1; } } setenv(PKG_PREFIX_VNAME, p->name, 1); if (fexists(REQUIRE_FNAME)) { if (Verbose) printf("Executing 'require' script.\n"); vsystem("chmod +x %s", REQUIRE_FNAME); /* be sure */ if (vsystem("./%s %s DEINSTALL", REQUIRE_FNAME, pkg)) { pwarnx("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.\n"); else { vsystem("chmod +x %s", DEINSTALL_FNAME); /* make sure */ if (vsystem("./%s %s DEINSTALL", DEINSTALL_FNAME, pkg)) { pwarnx("deinstall script returned error status"); if (!Force) return 1; } } } if (chdir(home) == FAIL) { cleanup(0); errx(2, "Toto! This doesn't look like Kansas anymore!"); } 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) pwarnx( "couldn't entirely delete package (perhaps the packing list is\n" "incorrectly specified?)"); if (vsystem("%s -r %s", REMOVE_CMD, LogDir)) { pwarnx("couldn't remove log entry in %s, deinstall failed", LogDir); if (!Force) return 1; } delete_pkg_links(dbdir, pkg); } 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(dbdir, p->name, undepend, pkg, 0); } 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) { 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, int unused) { 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) { pwarnx("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); pwarnx("couldn't open temp file `%s'", ftmp); return 0; } fpwr = fdopen(s, "w"); if (fpwr == NULL) { close(s); fclose(fp); pwarnx("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) { pwarnx("error changing permission of temp file `%s'", ftmp); fclose(fpwr); remove(ftmp); return 0; } if (fclose(fpwr) == EOF) { pwarnx("error closing temp file `%s'", ftmp); remove(ftmp); return 0; } if (rename(ftmp, fname) == -1) pwarnx("error renaming `%s' to `%s'", ftmp, fname); remove(ftmp); /* just in case */ return 0; }