509 lines
11 KiB
C
509 lines
11 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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* General packing list routines.
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*
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*/
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#include "lib.h"
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#include <err.h>
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#include <md5.h>
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/* Add an item to a packing list */
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void
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add_plist(Package *p, plist_t type, char *arg)
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{
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PackingList tmp;
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tmp = new_plist_entry();
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tmp->name = copy_string(arg);
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tmp->type = type;
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if (!p->head)
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p->head = p->tail = tmp;
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else {
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tmp->prev = p->tail;
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p->tail->next = tmp;
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p->tail = tmp;
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}
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}
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void
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add_plist_top(Package *p, plist_t type, char *arg)
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{
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PackingList tmp;
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tmp = new_plist_entry();
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tmp->name = copy_string(arg);
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tmp->type = type;
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if (!p->head)
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p->head = p->tail = tmp;
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else {
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tmp->next = p->head;
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p->head->prev = tmp;
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p->head = tmp;
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}
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}
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/* Return the last (most recent) entry in a packing list */
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PackingList
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last_plist(Package *p)
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{
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return p->tail;
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}
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/* Mark all items in a packing list to prevent iteration over them */
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void
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mark_plist(Package *pkg)
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{
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PackingList p = pkg->head;
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while (p) {
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p->marked = TRUE;
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p = p->next;
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}
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}
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/* Find a given item in a packing list and, if so, return it (else NULL) */
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PackingList
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find_plist(Package *pkg, plist_t type)
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{
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PackingList p = pkg->head;
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while (p) {
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if (p->type == type)
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return p;
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p = p->next;
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}
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return NULL;
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}
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/* Look for a specific boolean option argument in the list */
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char *
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find_plist_option(Package *pkg, char *name)
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{
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PackingList p = pkg->head;
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while (p) {
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if (p->type == PLIST_OPTION && !strcmp(p->name, name))
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return p->name;
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p = p->next;
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}
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return NULL;
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}
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/*
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* Delete plist item 'type' in the list (if 'name' is non-null, match it
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* too.) If 'all' is set, delete all items, not just the first occurance.
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*/
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void
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delete_plist(Package *pkg, Boolean all, plist_t type, char *name)
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{
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PackingList p = pkg->head;
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while (p) {
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PackingList pnext = p->next;
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if (p->type == type && (!name || !strcmp(name, p->name))) {
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free(p->name);
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if (p->prev)
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p->prev->next = pnext;
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else
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pkg->head = pnext;
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if (pnext)
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pnext->prev = p->prev;
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else
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pkg->tail = p->prev;
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free(p);
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if (!all)
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return;
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p = pnext;
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}
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else
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p = p->next;
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}
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}
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/* Allocate a new packing list entry */
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PackingList
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new_plist_entry(void)
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{
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PackingList ret;
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ret = (PackingList)malloc(sizeof(struct _plist));
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bzero(ret, sizeof(struct _plist));
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return ret;
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}
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/* Free an entire packing list */
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void
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free_plist(Package *pkg)
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{
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PackingList p = pkg->head;
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while (p) {
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PackingList p1 = p->next;
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free(p->name);
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free(p);
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p = p1;
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}
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pkg->head = pkg->tail = NULL;
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}
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/*
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* For an ascii string denoting a plist command, return its code and
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* optionally its argument(s)
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*/
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int
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plist_cmd(char *s, char **arg)
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{
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char cmd[FILENAME_MAX + 20]; /* 20 == fudge for max cmd len */
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char *cp, *sp;
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strcpy(cmd, s);
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str_lowercase(cmd);
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cp = cmd;
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sp = s;
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while (*cp) {
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if (isspace(*cp)) {
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*cp = '\0';
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while (isspace(*sp)) /* Never sure if macro, increment later */
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++sp;
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break;
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}
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++cp, ++sp;
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}
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if (arg)
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*arg = sp;
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if (!strcmp(cmd, "cwd"))
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return PLIST_CWD;
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else if (!strcmp(cmd, "srcdir"))
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return PLIST_SRC;
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else if (!strcmp(cmd, "cd"))
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return PLIST_CWD;
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else if (!strcmp(cmd, "exec"))
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return PLIST_CMD;
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else if (!strcmp(cmd, "unexec"))
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return PLIST_UNEXEC;
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else if (!strcmp(cmd, "mode"))
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return PLIST_CHMOD;
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else if (!strcmp(cmd, "owner"))
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return PLIST_CHOWN;
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else if (!strcmp(cmd, "group"))
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return PLIST_CHGRP;
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else if (!strcmp(cmd, "comment"))
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return PLIST_COMMENT;
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else if (!strcmp(cmd, "ignore"))
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return PLIST_IGNORE;
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else if (!strcmp(cmd, "ignore_inst"))
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return PLIST_IGNORE_INST;
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else if (!strcmp(cmd, "name"))
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return PLIST_NAME;
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else if (!strcmp(cmd, "display"))
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return PLIST_DISPLAY;
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else if (!strcmp(cmd, "pkgdep"))
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return PLIST_PKGDEP;
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else if (!strcmp(cmd, "mtree"))
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return PLIST_MTREE;
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else if (!strcmp(cmd, "dirrm"))
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return PLIST_DIR_RM;
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else if (!strcmp(cmd, "option"))
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return PLIST_OPTION;
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else
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return FAIL;
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}
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/* Read a packing list from a file */
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void
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read_plist(Package *pkg, FILE *fp)
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{
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char *cp, pline[FILENAME_MAX];
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int cmd;
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while (fgets(pline, FILENAME_MAX, fp)) {
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int len = strlen(pline);
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while (len && isspace(pline[len - 1]))
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pline[--len] = '\0';
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if (!len)
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continue;
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cp = pline;
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if (pline[0] == CMD_CHAR) {
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cmd = plist_cmd(pline + 1, &cp);
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if (cmd == FAIL) {
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cleanup(0);
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errx(2, "bad command '%s'", pline);
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}
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if (*cp == '\0')
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cp = NULL;
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}
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else
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cmd = PLIST_FILE;
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add_plist(pkg, cmd, cp);
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}
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}
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/* Write a packing list to a file, converting commands to ascii equivs */
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void
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write_plist(Package *pkg, FILE *fp)
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{
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PackingList plist = pkg->head;
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while (plist) {
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switch(plist->type) {
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case PLIST_FILE:
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fprintf(fp, "%s\n", plist->name);
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break;
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case PLIST_CWD:
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fprintf(fp, "%ccwd %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_SRC:
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fprintf(fp, "%csrcdir %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_CMD:
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fprintf(fp, "%cexec %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_UNEXEC:
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fprintf(fp, "%cunexec %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_CHMOD:
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fprintf(fp, "%cmode %s\n", CMD_CHAR, plist->name ? plist->name : "");
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break;
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case PLIST_CHOWN:
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fprintf(fp, "%cowner %s\n", CMD_CHAR, plist->name ? plist->name : "");
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break;
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case PLIST_CHGRP:
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fprintf(fp, "%cgroup %s\n", CMD_CHAR, plist->name ? plist->name : "");
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break;
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case PLIST_COMMENT:
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fprintf(fp, "%ccomment %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_IGNORE:
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case PLIST_IGNORE_INST: /* a one-time non-ignored file */
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fprintf(fp, "%cignore\n", CMD_CHAR);
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break;
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case PLIST_NAME:
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fprintf(fp, "%cname %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_DISPLAY:
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fprintf(fp, "%cdisplay %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_PKGDEP:
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fprintf(fp, "%cpkgdep %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_MTREE:
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fprintf(fp, "%cmtree %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_DIR_RM:
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fprintf(fp, "%cdirrm %s\n", CMD_CHAR, plist->name);
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break;
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case PLIST_OPTION:
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fprintf(fp, "%coption %s\n", CMD_CHAR, plist->name);
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break;
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default:
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cleanup(0);
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errx(2, "unknown command type %d (%s)", plist->type, plist->name);
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break;
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}
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plist = plist->next;
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}
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}
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/*
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* Delete the results of a package installation.
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*
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* This is here rather than in the pkg_delete code because pkg_add needs to
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* run it too in cases of failure.
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*/
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int
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delete_package(Boolean ign_err, Boolean nukedirs, Package *pkg)
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{
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PackingList p;
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char *Where = ".", *last_file = "";
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Boolean fail = SUCCESS;
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Boolean preserve;
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char tmp[FILENAME_MAX], *name = NULL;
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preserve = find_plist_option(pkg, "preserve") ? TRUE : FALSE;
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for (p = pkg->head; p; p = p->next) {
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switch (p->type) {
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case PLIST_NAME:
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name = p->name;
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break;
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case PLIST_IGNORE:
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p = p->next;
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break;
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case PLIST_CWD:
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Where = p->name;
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if (Verbose)
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printf("Change working directory to %s\n", Where);
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break;
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case PLIST_UNEXEC:
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format_cmd(tmp, p->name, Where, last_file);
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if (Verbose)
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printf("Execute `%s'\n", tmp);
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if (!Fake && system(tmp)) {
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warnx("unexec command for `%s' failed", tmp);
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fail = FAIL;
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}
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break;
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case PLIST_FILE:
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last_file = p->name;
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sprintf(tmp, "%s/%s", Where, p->name);
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if (isdir(tmp) && fexists(tmp) && !issymlink(tmp)) {
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warnx("cannot delete specified file `%s' - it is a directory!\n"
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"this packing list is incorrect - ignoring delete request", tmp);
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}
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else {
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if (p->next && p->next->type == PLIST_COMMENT && !strncmp(p->next->name, "MD5:", 4)) {
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char *cp, buf[33];
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if ((cp = MD5File(tmp, buf)) != NULL) {
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/* Mismatch? */
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if (strcmp(cp, p->next->name + 4)) {
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if (Verbose)
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printf("%s fails original MD5 checksum - %s\n",
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tmp, Force ? "deleted anyway." : "not deleted.");
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if (!Force) {
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fail = FAIL;
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continue;
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}
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}
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}
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}
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if (Verbose)
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printf("Delete file %s\n", tmp);
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if (!Fake) {
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if (delete_hierarchy(tmp, ign_err, nukedirs))
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fail = FAIL;
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if (preserve && name) {
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char tmp2[FILENAME_MAX];
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if (make_preserve_name(tmp2, FILENAME_MAX, name, tmp)) {
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if (fexists(tmp2)) {
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if (rename(tmp2, tmp))
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warn("preserve: unable to restore %s as %s",
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tmp2, tmp);
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}
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}
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}
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}
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}
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break;
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case PLIST_DIR_RM:
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sprintf(tmp, "%s/%s", Where, p->name);
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if (!isdir(tmp) && fexists(tmp)) {
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warnx("cannot delete specified directory `%s' - it is a file!\n"
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"this packing list is incorrect - ignoring delete request", tmp);
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}
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else {
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if (Verbose)
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printf("Delete directory %s\n", tmp);
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if (!Fake && delete_hierarchy(tmp, ign_err, FALSE)) {
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warnx("unable to completely remove directory '%s'", tmp);
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fail = FAIL;
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}
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}
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last_file = p->name;
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break;
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}
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}
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return fail;
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}
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#ifdef DEBUG
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#define RMDIR(dir) vsystem("%s %s", RMDIR_CMD, dir)
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#define REMOVE(dir,ie) vsystem("%s %s%s", REMOVE_CMD, (ie ? "-f " : ""), dir)
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#else
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#define RMDIR rmdir
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#define REMOVE(file,ie) (remove(file) && !(ie))
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#endif
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/* Selectively delete a hierarchy */
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int
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delete_hierarchy(char *dir, Boolean ign_err, Boolean nukedirs)
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{
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char *cp1, *cp2;
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cp1 = cp2 = dir;
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if (!fexists(dir)) {
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if (!ign_err)
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warnx("%s `%s' doesn't really exist",
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isdir(dir) ? "directory" : "file", dir);
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return !ign_err;
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}
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else if (nukedirs) {
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if (vsystem("%s -r%s %s", REMOVE_CMD, (ign_err ? "f" : ""), dir))
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return 1;
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}
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else if (isdir(dir) && !issymlink(dir)) {
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if (RMDIR(dir) && !ign_err)
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return 1;
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}
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else {
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if (REMOVE(dir, ign_err))
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return 1;
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}
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if (!nukedirs)
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return 0;
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while (cp2) {
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if ((cp2 = rindex(cp1, '/')) != NULL)
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*cp2 = '\0';
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if (!isemptydir(dir))
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return 0;
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if (RMDIR(dir) && !ign_err) {
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if (!fexists(dir))
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warnx("directory `%s' doesn't really exist", dir);
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else
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return 1;
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}
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/* back up the pathname one component */
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if (cp2) {
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cp1 = dir;
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}
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}
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return 0;
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}
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