755 lines
15 KiB
C
755 lines
15 KiB
C
/* $NetBSD: file.c,v 1.1.1.3 2007/08/23 15:19:14 joerg Exp $ */
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <nbcompat.h>
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#if HAVE_SYS_CDEFS_H
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#include <sys/cdefs.h>
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#endif
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#if HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#if HAVE_SYS_QUEUE_H
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#include <sys/queue.h>
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#endif
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#ifndef lint
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#if 0
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static const char *rcsid = "from FreeBSD Id: file.c,v 1.29 1997/10/08 07:47:54 charnier Exp";
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#else
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__RCSID("$NetBSD: file.c,v 1.1.1.3 2007/08/23 15:19:14 joerg Exp $");
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#endif
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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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* Miscellaneous file access utilities.
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*
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*/
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#include "lib.h"
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#if HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#if HAVE_ASSERT_H
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#include <assert.h>
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#endif
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#if HAVE_ERR_H
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#include <err.h>
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#endif
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#if HAVE_GLOB_H
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#include <glob.h>
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#endif
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#if HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#if HAVE_PWD_H
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#include <pwd.h>
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#endif
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#if HAVE_TIME_H
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#include <time.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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/*
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* Quick check to see if a file (or dir ...) exists
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*/
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Boolean
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fexists(const char *fname)
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{
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struct stat dummy;
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if (!lstat(fname, &dummy))
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return TRUE;
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return FALSE;
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}
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/*
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* Quick check to see if something is a directory
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*/
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Boolean
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isdir(const char *fname)
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{
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struct stat sb;
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if (lstat(fname, &sb) != FAIL && S_ISDIR(sb.st_mode))
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return TRUE;
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else
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return FALSE;
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}
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/*
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* Check if something is a link to a directory
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*/
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Boolean
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islinktodir(const char *fname)
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{
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struct stat sb;
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if (lstat(fname, &sb) != FAIL && S_ISLNK(sb.st_mode)) {
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if (stat(fname, &sb) != FAIL && S_ISDIR(sb.st_mode))
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return TRUE; /* link to dir! */
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else
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return FALSE; /* link to non-dir */
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} else
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return FALSE; /* non-link */
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}
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/*
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* Check to see if file is a dir, and is empty
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*/
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Boolean
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isemptydir(const char *fname)
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{
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if (isdir(fname) || islinktodir(fname)) {
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DIR *dirp;
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struct dirent *dp;
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dirp = opendir(fname);
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if (!dirp)
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return FALSE; /* no perms, leave it alone */
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for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
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if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
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closedir(dirp);
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return FALSE;
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}
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}
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(void) closedir(dirp);
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return TRUE;
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}
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return FALSE;
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}
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/*
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* Check if something is a regular file
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*/
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Boolean
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isfile(const char *fname)
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{
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struct stat sb;
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if (stat(fname, &sb) != FAIL && S_ISREG(sb.st_mode))
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return TRUE;
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return FALSE;
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}
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/*
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* Check to see if file is a file and is empty. If nonexistent or not
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* a file, say "it's empty", otherwise return TRUE if zero sized.
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*/
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Boolean
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isemptyfile(const char *fname)
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{
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struct stat sb;
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if (stat(fname, &sb) != FAIL && S_ISREG(sb.st_mode)) {
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if (sb.st_size != 0)
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return FALSE;
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}
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return TRUE;
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}
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/* This struct defines the leading part of a valid URL name */
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typedef struct url_t {
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char *u_s; /* the leading part of the URL */
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int u_len; /* its length */
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} url_t;
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/* A table of valid leading strings for URLs */
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static const url_t urls[] = {
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{"ftp://", 6},
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{"http://", 7},
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{NULL}
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};
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/*
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* Returns length of leading part of any URL from urls table, or -1
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*/
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int
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URLlength(const char *fname)
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{
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const url_t *up;
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int i;
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if (fname != (char *) NULL) {
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for (i = 0; isspace((unsigned char) *fname); i++) {
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fname++;
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}
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for (up = urls; up->u_s; up++) {
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if (strncmp(fname, up->u_s, up->u_len) == 0) {
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return i + up->u_len; /* ... + sizeof(up->u_s); - HF */
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}
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}
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}
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return -1;
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}
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/*
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* Returns the host part of a URL
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*/
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const char *
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fileURLHost(const char *fname, char *where, int max)
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{
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const char *ret;
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int i;
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assert(where != NULL);
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assert(max > 0);
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if ((i = URLlength(fname)) < 0) { /* invalid URL? */
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errx(EXIT_FAILURE, "fileURLhost called with a bad URL: `%s'", fname);
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}
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fname += i;
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/* Do we have a place to stick our work? */
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ret = where;
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while (*fname && *fname != '/' && --max)
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*where++ = *fname++;
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*where = '\0';
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return ret;
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}
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/*
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* Returns the filename part of a URL
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*/
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const char *
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fileURLFilename(const char *fname, char *where, int max)
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{
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const char *ret;
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int i;
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assert(where != NULL);
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assert(max > 0);
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if ((i = URLlength(fname)) < 0) { /* invalid URL? */
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errx(EXIT_FAILURE, "fileURLFilename called with a bad URL: `%s'", fname);
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}
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fname += i;
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/* Do we have a place to stick our work? */
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ret = where;
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while (*fname && *fname != '/')
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++fname;
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if (*fname == '/') {
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while (*fname && --max)
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*where++ = *fname++;
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}
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*where = '\0';
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return ret;
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}
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/*
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* Try and fetch a file by URL, returning the directory name for where
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* it's unpacked, if successful. To be handed to leave_playpen() later.
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*/
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char *
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fileGetURL(const char *spec)
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{
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char host[MAXHOSTNAMELEN], file[MaxPathSize];
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const char *cp;
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char *rp;
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char pen[MaxPathSize];
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int rc;
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rp = NULL;
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if (!IS_URL(spec)) {
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errx(EXIT_FAILURE, "fileGetURL was called with non-URL arg '%s'", spec);
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}
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/* Some sanity checks on the URL */
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cp = fileURLHost(spec, host, MAXHOSTNAMELEN);
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if (!*cp) {
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warnx("URL `%s' has bad host part!", spec);
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return NULL;
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}
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cp = fileURLFilename(spec, file, MaxPathSize);
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if (!*cp) {
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warnx("URL `%s' has bad filename part!", spec);
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return NULL;
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}
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if (Verbose)
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printf("Trying to fetch %s.\n", spec);
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pen[0] = '\0';
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rp = make_playpen(pen, sizeof(pen), 0);
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if (rp == NULL) {
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printf("Error: Unable to construct a new playpen for FTP!\n");
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return NULL;
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}
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rp = strdup(pen);
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rc = unpackURL(spec, pen);
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if (rc < 0) {
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leave_playpen(rp); /* Don't leave dir hang around! */
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printf("Error on unpackURL('%s', '%s')\n", spec, pen);
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return NULL;
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}
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return rp;
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}
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static char *
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resolvepattern1(const char *name)
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{
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static char tmp[MaxPathSize];
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char *cp;
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if (IS_URL(name)) {
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/* some package depends on a wildcard pkg */
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int rc;
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rc = expandURL(tmp, name);
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if (rc < 0) {
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return NULL;
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}
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if (Verbose)
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printf("'%s' expanded to '%s'\n", name, tmp);
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return tmp; /* return expanded URL w/ corrent pkg */
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}
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else if (ispkgpattern(name)) {
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cp = find_best_matching_file(dirname_of(name), basename_of(name), 1, 0);
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if (cp) {
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snprintf(tmp, sizeof(tmp), "%s/%s", dirname_of(name), cp);
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free(cp);
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return tmp;
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}
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} else {
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if (isfile(name)) {
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strlcpy(tmp, name, sizeof(tmp));
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return tmp;
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}
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}
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return NULL;
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}
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static char *
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resolvepattern(const char *name)
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{
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char tmp[MaxPathSize];
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char *cp;
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const char *suf;
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cp = resolvepattern1(name);
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if (cp != NULL)
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return cp;
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if (ispkgpattern(name))
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return NULL;
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suf = suffix_of(name);
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if (!strcmp(suf, "tbz") || !strcmp(suf, "tgz"))
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return NULL;
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/* add suffix and try */
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snprintf(tmp, sizeof(tmp), "%s.tbz", name);
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cp = resolvepattern1(tmp);
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if (cp != NULL)
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return cp;
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snprintf(tmp, sizeof(tmp), "%s.tgz", name);
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cp = resolvepattern1(tmp);
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if (cp != NULL)
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return cp;
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/* add version number wildcard and try */
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snprintf(tmp, sizeof(tmp), "%s-[0-9]*", name);
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return resolvepattern1(tmp);
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}
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/*
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* Look for filename/pattern "fname" in
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* Returns a full path/URL where the pkg can be found
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*/
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char *
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fileFindByPath(const char *fname)
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{
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char tmp[MaxPathSize];
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struct path *path;
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/*
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* 1. if fname is an absolute pathname or a URL,
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* just use it.
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*/
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if (IS_FULLPATH(fname) || IS_URL(fname))
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return resolvepattern(fname);
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/*
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* 2. otherwise, use PKG_PATH.
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*/
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TAILQ_FOREACH(path, &PkgPath, pl_entry) {
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char *cp;
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const char *cp2 = path->pl_path;
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if (Verbose)
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printf("trying PKG_PATH %s\n", cp2);
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if (IS_FULLPATH(cp2) || IS_URL(cp2)) {
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snprintf(tmp, sizeof(tmp), "%s/%s", cp2, fname);
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}
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else {
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char cwdtmp[MaxPathSize];
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if (getcwd(cwdtmp, sizeof(cwdtmp)) == NULL)
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errx(EXIT_FAILURE, "getcwd");
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snprintf(tmp, sizeof(tmp), "%s/%s/%s", cwdtmp, cp2, fname);
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}
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cp = resolvepattern(tmp);
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if (cp)
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return cp;
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}
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#if 0
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/*
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* 3. finally, search current directory.
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*/
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snprintf(tmp, sizeof(tmp), "./%s", fname);
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return resolvepattern(tmp);
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#else
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return NULL;
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#endif
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}
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/*
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* Expect "fname" to point at a file, and read it into
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* the buffer returned.
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*/
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char *
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fileGetContents(char *fname)
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{
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char *contents;
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struct stat sb;
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int fd;
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if (stat(fname, &sb) == FAIL) {
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cleanup(0);
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errx(2, "can't stat '%s'", fname);
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}
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contents = (char *) malloc((size_t) (sb.st_size) + 1);
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fd = open(fname, O_RDONLY, 0);
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if (fd == FAIL) {
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cleanup(0);
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errx(2, "unable to open '%s' for reading", fname);
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}
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if (read(fd, contents, (size_t) sb.st_size) != (size_t) sb.st_size) {
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cleanup(0);
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errx(2, "short read on '%s' - did not get %lld bytes",
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fname, (long long) sb.st_size);
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}
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close(fd);
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contents[(size_t) sb.st_size] = '\0';
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return contents;
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}
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/*
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* Takes a filename and package name, returning (in "try") the canonical
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* "preserve" name for it.
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*/
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Boolean
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make_preserve_name(char *try, size_t max, char *name, char *file)
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{
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int len, i;
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if ((len = strlen(file)) == 0)
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return FALSE;
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else
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i = len - 1;
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strncpy(try, file, max);
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if (try[i] == '/') /* Catch trailing slash early and save checking in the loop */
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--i;
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for (; i; i--) {
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if (try[i] == '/') {
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try[i + 1] = '.';
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strncpy(&try[i + 2], &file[i + 1], max - i - 2);
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break;
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}
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}
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if (!i) {
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try[0] = '.';
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strncpy(try + 1, file, max - 1);
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}
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/* I should probably be called rude names for these inline assignments */
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strncat(try, ".", max -= strlen(try));
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strncat(try, name, max -= strlen(name));
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strncat(try, ".", max--);
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strncat(try, "backup", max -= 6);
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return TRUE;
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}
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/*
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* Write the contents of "str" to a file
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*/
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void
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write_file(char *name, char *str)
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{
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size_t len;
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FILE *fp;
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if ((fp = fopen(name, "w")) == (FILE *) NULL) {
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cleanup(0);
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errx(2, "cannot fopen '%s' for writing", name);
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}
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len = strlen(str);
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if (fwrite(str, 1, len, fp) != len) {
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cleanup(0);
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errx(2, "short fwrite on '%s', tried to write %ld bytes",
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name, (long) len);
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}
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if (fclose(fp)) {
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cleanup(0);
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errx(2, "failure to fclose '%s'", name);
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}
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}
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void
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copy_file(char *dir, char *fname, char *to)
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{
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char fpath[MaxPathSize];
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(void) snprintf(fpath, sizeof(fpath), "%s%s%s",
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(fname[0] != '/') ? dir : "",
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(fname[0] != '/') ? "/" : "",
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fname);
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if (fexec("cp", "-r", fpath, to, NULL)) {
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cleanup(0);
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errx(2, "could not perform 'cp -r %s %s'", fpath, to);
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}
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}
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void
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move_file(char *dir, char *fname, char *to)
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{
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char fpath[MaxPathSize];
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(void) snprintf(fpath, sizeof(fpath), "%s%s%s",
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(fname[0] != '/') ? dir : "",
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(fname[0] != '/') ? "/" : "",
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fname);
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if (fexec("mv", fpath, to, NULL)) {
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cleanup(0);
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errx(2, "could not perform 'mv %s %s'", fpath, to);
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}
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}
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void
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move_files(const char *dir, const char *pattern, const char *to)
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{
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char fpath[MaxPathSize];
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glob_t globbed;
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size_t i;
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(void) snprintf(fpath, sizeof(fpath), "%s/%s", dir, pattern);
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if ((i=glob(fpath, GLOB_NOSORT, NULL, &globbed)) != 0) {
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switch(i) {
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case GLOB_NOMATCH:
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warn("no files matching ``%s'' found", fpath);
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break;
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case GLOB_ABORTED:
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warn("globbing aborted");
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break;
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case GLOB_NOSPACE:
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warn("out-of-memory during globbing");
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break;
|
|
default:
|
|
warn("unknown error during globbing");
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Moving globbed files -- we just use mv(1) to do the job */
|
|
for (i=0; i<globbed.gl_pathc; i++)
|
|
if (fexec("mv", globbed.gl_pathv[i], to, NULL)) {
|
|
cleanup(0);
|
|
errx(2, "could not perform 'mv %s %s'", globbed.gl_pathv[i], to);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
remove_files(const char *path, const char *pattern)
|
|
{
|
|
char fpath[MaxPathSize];
|
|
glob_t globbed;
|
|
int i;
|
|
|
|
(void) snprintf(fpath, sizeof(fpath), "%s/%s", path, pattern);
|
|
if ((i=glob(fpath, GLOB_NOSORT, NULL, &globbed)) != 0) {
|
|
switch(i) {
|
|
case GLOB_NOMATCH:
|
|
warn("no files matching ``%s'' found", fpath);
|
|
break;
|
|
case GLOB_ABORTED:
|
|
warn("globbing aborted");
|
|
break;
|
|
case GLOB_NOSPACE:
|
|
warn("out-of-memory during globbing");
|
|
break;
|
|
default:
|
|
warn("unknown error during globbing");
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* deleting globbed files */
|
|
for (i=0; i<globbed.gl_pathc; i++)
|
|
if (unlink(globbed.gl_pathv[i]) < 0)
|
|
warn("can't delete ``%s''", globbed.gl_pathv[i]);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Unpack a tar file
|
|
*/
|
|
int
|
|
unpack(const char *pkg, const lfile_head_t *filesp)
|
|
{
|
|
const char *decompress_cmd = NULL;
|
|
const char *suf;
|
|
int count = 0;
|
|
lfile_t *lfp;
|
|
char **up_argv;
|
|
int up_argc = 7;
|
|
int i = 0;
|
|
int result;
|
|
|
|
if (filesp != NULL)
|
|
TAILQ_FOREACH(lfp, filesp, lf_link)
|
|
count++;
|
|
up_argc += count;
|
|
up_argv = malloc((count + up_argc + 1) * sizeof(char *));
|
|
if (!IS_STDIN(pkg)) {
|
|
suf = suffix_of(pkg);
|
|
if (!strcmp(suf, "tbz") || !strcmp(suf, "bz2"))
|
|
decompress_cmd = BZIP2_CMD;
|
|
else if (!strcmp(suf, "tgz") || !strcmp(suf, "gz"))
|
|
decompress_cmd = GZIP_CMD;
|
|
else if (!strcmp(suf, "tar"))
|
|
; /* do nothing */
|
|
else
|
|
errx(EXIT_FAILURE, "don't know how to decompress %s, sorry", pkg);
|
|
} else
|
|
decompress_cmd = GZIP_CMD;
|
|
|
|
up_argv[i] = (char *)strrchr(TAR_CMD, '/');
|
|
if (up_argv[i] == NULL)
|
|
up_argv[i] = TAR_CMD;
|
|
else
|
|
up_argv[i]++; /* skip / character */
|
|
if (count > 0)
|
|
up_argv[++i] = "--fast-read";
|
|
if (decompress_cmd != NULL) {
|
|
up_argv[++i] = "--use-compress-program";
|
|
up_argv[++i] = (char *)decompress_cmd;
|
|
}
|
|
up_argv[++i] = "-xpf";
|
|
up_argv[++i] = (char *)pkg;
|
|
if (count > 0)
|
|
TAILQ_FOREACH(lfp, filesp, lf_link)
|
|
up_argv[++i] = lfp->lf_name;
|
|
up_argv[++i] = NULL;
|
|
|
|
if (Verbose) {
|
|
printf("running: %s", TAR_CMD);
|
|
for (i = 1; up_argv[i] != NULL; i++)
|
|
printf(" %s", up_argv[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
result = pfcexec(NULL, TAR_CMD, (const char **)up_argv);
|
|
free(up_argv);
|
|
if (result != 0) {
|
|
warnx("extract of %s failed", pkg);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Using fmt, replace all instances of:
|
|
*
|
|
* %F With the parameter "name"
|
|
* %D With the parameter "dir"
|
|
* %B Return the directory part ("base") of %D/%F
|
|
* %f Return the filename part of %D/%F
|
|
*
|
|
* Check that no overflows can occur.
|
|
*/
|
|
void
|
|
format_cmd(char *buf, size_t size, char *fmt, char *dir, char *name)
|
|
{
|
|
char scratch[MaxPathSize * 2];
|
|
char *bufp;
|
|
char *cp;
|
|
|
|
for (bufp = buf; (int) (bufp - buf) < size && *fmt;) {
|
|
if (*fmt == '%') {
|
|
if (*++fmt != 'D' && name == NULL) {
|
|
cleanup(0);
|
|
errx(2, "no last file available for '%s' command", buf);
|
|
}
|
|
switch (*fmt) {
|
|
case 'F':
|
|
strlcpy(bufp, name, size - (int) (bufp - buf));
|
|
bufp += strlen(bufp);
|
|
break;
|
|
|
|
case 'D':
|
|
strlcpy(bufp, dir, size - (int) (bufp - buf));
|
|
bufp += strlen(bufp);
|
|
break;
|
|
|
|
case 'B':
|
|
(void) snprintf(scratch, sizeof(scratch), "%s/%s", dir, name);
|
|
if ((cp = strrchr(scratch, '/')) == (char *) NULL) {
|
|
cp = scratch;
|
|
}
|
|
*cp = '\0';
|
|
strlcpy(bufp, scratch, size - (int) (bufp - buf));
|
|
bufp += strlen(bufp);
|
|
break;
|
|
|
|
case 'f':
|
|
(void) snprintf(scratch, sizeof(scratch), "%s/%s", dir, name);
|
|
if ((cp = strrchr(scratch, '/')) == (char *) NULL) {
|
|
cp = scratch;
|
|
} else {
|
|
cp++;
|
|
}
|
|
strlcpy(bufp, cp, size - (int) (bufp - buf));
|
|
bufp += strlen(bufp);
|
|
break;
|
|
|
|
default:
|
|
*bufp++ = '%';
|
|
*bufp++ = *fmt;
|
|
break;
|
|
}
|
|
++fmt;
|
|
} else {
|
|
*bufp++ = *fmt++;
|
|
}
|
|
}
|
|
*bufp = '\0';
|
|
}
|