448 lines
10 KiB
C
448 lines
10 KiB
C
#ifndef lint
|
|
static const char *rcsid = "$Id: file.c,v 1.15 1995/08/01 07:16:50 jkh 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
|
|
*
|
|
* Miscellaneous file access utilities.
|
|
*
|
|
*/
|
|
|
|
#include "lib.h"
|
|
#include "ftp.h"
|
|
#include <pwd.h>
|
|
#include <time.h>
|
|
|
|
/* Quick check to see if a file exists */
|
|
Boolean
|
|
fexists(char *fname)
|
|
{
|
|
struct stat dummy;
|
|
if (!lstat(fname, &dummy))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Quick check to see if something is a directory */
|
|
Boolean
|
|
isdir(char *fname)
|
|
{
|
|
struct stat sb;
|
|
|
|
if (stat(fname, &sb) != FAIL && S_ISDIR(sb.st_mode))
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
/* Check to see if file is a dir, and is empty */
|
|
Boolean
|
|
isemptydir(char *fname)
|
|
{
|
|
if (isdir(fname)) {
|
|
DIR *dirp;
|
|
struct dirent *dp;
|
|
|
|
dirp = opendir(fname);
|
|
if (!dirp)
|
|
return FALSE; /* no perms, leave it alone */
|
|
for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
|
|
if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
|
|
closedir(dirp);
|
|
return FALSE;
|
|
}
|
|
}
|
|
(void)closedir(dirp);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
Boolean
|
|
isfile(char *fname)
|
|
{
|
|
struct stat sb;
|
|
if (stat(fname, &sb) != FAIL && S_ISREG(sb.st_mode))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Check to see if file is a file and is empty. If nonexistent or not
|
|
a file, say "it's empty", otherwise return TRUE if zero sized. */
|
|
Boolean
|
|
isemptyfile(char *fname)
|
|
{
|
|
struct stat sb;
|
|
if (stat(fname, &sb) != FAIL && S_ISREG(sb.st_mode)) {
|
|
if (sb.st_size != 0)
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Returns TRUE if file is a URL specification */
|
|
Boolean
|
|
isURL(char *fname)
|
|
{
|
|
/*
|
|
* I'm sure there are other types of URL specifications that I could
|
|
* also be looking for here, but for now I'll just be happy to get ftp
|
|
* working.
|
|
*/
|
|
while (isspace(*fname))
|
|
++fname;
|
|
if (!strncmp(fname, "ftp://", 6))
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Returns the host part of a URL */
|
|
char *
|
|
fileURLHost(char *fname, char *where, int max)
|
|
{
|
|
char *ret;
|
|
|
|
while (isspace(*fname))
|
|
++fname;
|
|
/* Don't ever call this on a bad URL! */
|
|
fname += strlen("ftp://");
|
|
/* Do we have a place to stick our work? */
|
|
if (ret = where) {
|
|
while (*fname && *fname != '/' && max--)
|
|
*where++ = *fname++;
|
|
*where = '\0';
|
|
return ret;
|
|
}
|
|
/* If not, they must really want us to stomp the original string */
|
|
ret = fname;
|
|
while (*fname && *fname != '/')
|
|
++fname;
|
|
*fname = '\0';
|
|
return ret;
|
|
}
|
|
|
|
/* Returns the filename part of a URL */
|
|
char *
|
|
fileURLFilename(char *fname, char *where, int max)
|
|
{
|
|
char *ret;
|
|
|
|
while (isspace(*fname))
|
|
++fname;
|
|
/* Don't ever call this on a bad URL! */
|
|
fname += strlen("ftp://");
|
|
/* Do we have a place to stick our work? */
|
|
if (ret = where) {
|
|
while (*fname && *fname != '/')
|
|
++fname;
|
|
if (*fname == '/') {
|
|
while (*fname && max--)
|
|
*where++ = *fname++;
|
|
}
|
|
*where = '\0';
|
|
return ret;
|
|
}
|
|
/* If not, they must really want us to stomp the original string */
|
|
while (*fname && *fname != '/')
|
|
++fname;
|
|
return fname;
|
|
}
|
|
|
|
#define HOSTNAME_MAX 64
|
|
/*
|
|
* Try and fetch a file by URL, returning the fd of open
|
|
* file if fetched successfully.
|
|
*/
|
|
char *
|
|
fileGetURL(char *fname)
|
|
{
|
|
char host[HOSTNAME_MAX], file[FILENAME_MAX], dir[FILENAME_MAX];
|
|
char pword[HOSTNAME_MAX + 40], *uname, *cp;
|
|
static char tmpl[40];
|
|
struct passwd *pw;
|
|
FTP_t ftp;
|
|
int fd, fd2, i, len = 0;
|
|
char ch;
|
|
time_t start, stop;
|
|
|
|
if (!isURL(fname))
|
|
return NULL;
|
|
|
|
ftp = FtpInit();
|
|
cp = fileURLHost(fname, host, HOSTNAME_MAX);
|
|
if (!*cp) {
|
|
whinge("URL `%s' has bad host part!", fname);
|
|
return NULL;
|
|
}
|
|
|
|
cp = fileURLFilename(fname, file, FILENAME_MAX);
|
|
if (!*cp) {
|
|
whinge("URL `%s' has bad filename part!", fname);
|
|
return NULL;
|
|
}
|
|
|
|
/* Maybe change to ftp if this doesn't work */
|
|
uname = "anonymous";
|
|
|
|
/* Make up a convincing "password" */
|
|
pw = getpwuid(getuid());
|
|
if (!pw) {
|
|
whinge("Can't get user name for ID %d\n.", getuid());
|
|
strcpy(pword, "joe@");
|
|
}
|
|
else
|
|
snprintf(pword, HOSTNAME_MAX + 40, "%s@%s", pw->pw_name, host);
|
|
if (Verbose)
|
|
printf("Trying to fetch %s from %s.\n", file, host);
|
|
|
|
FtpOpen(ftp, host, uname, pword);
|
|
if (getenv("FTP_PASSIVE_MODE"))
|
|
FtpPassive(ftp, TRUE);
|
|
|
|
strcpy(dir, file);
|
|
for (i = strlen(dir); i && dir[i] != '/'; i--);
|
|
dir[i] = '\0';
|
|
|
|
if (dir[0]) {
|
|
if (Verbose) printf("FTP: chdir to %s\n", dir);
|
|
FtpChdir(ftp, dir);
|
|
}
|
|
FtpBinary(ftp, TRUE);
|
|
if (Verbose) printf("FTP: trying to get %s\n", basename_of(file));
|
|
fd = FtpGet(ftp, basename_of(file));
|
|
if (fd < 0)
|
|
return NULL;
|
|
if ((cp = getenv("PKG_TMPDIR")) != NULL)
|
|
sprintf(tmpl, "%s/instpkg-XXXXXX.tgz", cp);
|
|
else
|
|
strcpy(tmpl, "/var/tmp/instpkg-XXXXXX.tgz");
|
|
fd2 = mkstemp(tmpl);
|
|
if (fd2 < 0) {
|
|
whinge("Unable to create a temporary file for ftp: %s", tmpl);
|
|
return NULL;
|
|
}
|
|
if (Verbose) printf("FTP: Trying to copy from ftp connection to temporary: %s\n", tmpl);
|
|
(void)time(&start);
|
|
while (read(fd, &ch, 1) == 1) {
|
|
++len;
|
|
write(fd2, &ch, 1);
|
|
}
|
|
(void)time(&stop);
|
|
if (Verbose) printf("FTP: Read %d bytes from connection, %d elapsed seconds.\n%FTP: Average transfer rate: %d bytes/second.\n", len, stop - start, len / ((stop - start) + 1));
|
|
FtpEOF(ftp);
|
|
FtpClose(ftp);
|
|
return tmpl;
|
|
}
|
|
|
|
char *
|
|
fileFindByPath(char *fname)
|
|
{
|
|
static char tmp[FILENAME_MAX];
|
|
char *cp;
|
|
|
|
if (fexists(fname) && isfile(fname)) {
|
|
strcpy(tmp, fname);
|
|
return tmp;
|
|
}
|
|
cp = getenv("PKG_PATH");
|
|
while (cp) {
|
|
char *cp2 = strsep(&cp, ":");
|
|
|
|
snprintf(tmp, FILENAME_MAX, "%s/%s.tgz", cp2 ? cp2 : cp, fname);
|
|
if (fexists(tmp) && isfile(fname))
|
|
return tmp;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
char *
|
|
fileGetContents(char *fname)
|
|
{
|
|
char *contents;
|
|
struct stat sb;
|
|
int fd;
|
|
|
|
if (stat(fname, &sb) == FAIL)
|
|
barf("Can't stat '%s'.", fname);
|
|
|
|
contents = (char *)malloc(sb.st_size + 1);
|
|
fd = open(fname, O_RDONLY, 0);
|
|
if (fd == FAIL)
|
|
barf("Unable to open '%s' for reading.", fname);
|
|
if (read(fd, contents, sb.st_size) != sb.st_size)
|
|
barf("Short read on '%s' - did not get %qd bytes.", fname, sb.st_size);
|
|
close(fd);
|
|
contents[sb.st_size] = '\0';
|
|
return contents;
|
|
}
|
|
|
|
/* Write the contents of "str" to a file */
|
|
void
|
|
write_file(char *name, char *str)
|
|
{
|
|
FILE *fp;
|
|
int len;
|
|
|
|
fp = fopen(name, "w");
|
|
if (!fp)
|
|
barf("Can't fopen '%s' for writing.", name);
|
|
len = strlen(str);
|
|
if (fwrite(str, 1, len, fp) != len)
|
|
barf("Short fwrite on '%s', tried to write %d bytes.", name, len);
|
|
if (fclose(fp))
|
|
barf("failure to fclose '%s'.", name);
|
|
}
|
|
|
|
void
|
|
copy_file(char *dir, char *fname, char *to)
|
|
{
|
|
char cmd[FILENAME_MAX];
|
|
|
|
if (fname[0] == '/')
|
|
snprintf(cmd, FILENAME_MAX, "cp -p -r %s %s", fname, to);
|
|
else
|
|
snprintf(cmd, FILENAME_MAX, "cp -p -r %s/%s %s", dir, fname, to);
|
|
if (vsystem(cmd))
|
|
barf("Couldn't perform '%s'", cmd);
|
|
}
|
|
|
|
void
|
|
move_file(char *dir, char *fname, char *to)
|
|
{
|
|
char cmd[FILENAME_MAX];
|
|
|
|
if (fname[0] == '/')
|
|
snprintf(cmd, FILENAME_MAX, "mv %s %s", fname, to);
|
|
else
|
|
snprintf(cmd, FILENAME_MAX, "mv %s/%s %s", dir, fname, to);
|
|
if (vsystem(cmd))
|
|
barf("Couldn't perform '%s'", cmd);
|
|
}
|
|
|
|
/*
|
|
* Copy a hierarchy (possibly from dir) to the current directory, or
|
|
* if "to" is TRUE, from the current directory to a location someplace
|
|
* else.
|
|
*
|
|
* Though slower, using tar to copy preserves symlinks and everything
|
|
* without me having to write some big hairy routine to do it.
|
|
*/
|
|
void
|
|
copy_hierarchy(char *dir, char *fname, Boolean to)
|
|
{
|
|
char cmd[FILENAME_MAX * 3];
|
|
|
|
if (!to) {
|
|
/* If absolute path, use it */
|
|
if (*fname == '/')
|
|
dir = "/";
|
|
snprintf(cmd, FILENAME_MAX * 3, "tar cf - -C %s %s | tar xpf -",
|
|
dir, fname);
|
|
}
|
|
else
|
|
snprintf(cmd, FILENAME_MAX * 3, "tar cf - %s | tar xpf - -C %s",
|
|
fname, dir);
|
|
#ifdef DEBUG
|
|
printf("Using '%s' to copy trees.\n", cmd);
|
|
#endif
|
|
if (system(cmd))
|
|
barf("copy_file: Couldn't perform '%s'", cmd);
|
|
}
|
|
|
|
/* Unpack a tar file */
|
|
int
|
|
unpack(char *pkg, char *flist)
|
|
{
|
|
char args[10], suffix[80], *cp;
|
|
|
|
/*
|
|
* Figure out by a crude heuristic whether this or not this is probably
|
|
* compressed.
|
|
*/
|
|
cp = rindex(pkg, '.');
|
|
if (cp) {
|
|
strcpy(suffix, cp + 1);
|
|
if (index(suffix, 'z') || index(suffix, 'Z'))
|
|
strcpy(args, "-z");
|
|
}
|
|
strcat(args, "xpf");
|
|
if (vsystem("tar %s %s %s", args, pkg, flist ? flist : "")) {
|
|
whinge("Tar 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
|
|
*
|
|
* Does not check for overflow - caution!
|
|
*
|
|
*/
|
|
void
|
|
format_cmd(char *buf, char *fmt, char *dir, char *name)
|
|
{
|
|
char *cp, scratch[FILENAME_MAX * 2];
|
|
|
|
while (*fmt) {
|
|
if (*fmt == '%') {
|
|
switch (*++fmt) {
|
|
case 'F':
|
|
strcpy(buf, name);
|
|
buf += strlen(name);
|
|
break;
|
|
|
|
case 'D':
|
|
strcpy(buf, dir);
|
|
buf += strlen(dir);
|
|
break;
|
|
|
|
case 'B':
|
|
sprintf(scratch, "%s/%s", dir, name);
|
|
cp = &scratch[strlen(scratch) - 1];
|
|
while (cp != scratch && *cp != '/')
|
|
--cp;
|
|
*cp = '\0';
|
|
strcpy(buf, scratch);
|
|
buf += strlen(scratch);
|
|
break;
|
|
|
|
case 'f':
|
|
sprintf(scratch, "%s/%s", dir, name);
|
|
cp = &scratch[strlen(scratch) - 1];
|
|
while (cp != scratch && *(cp - 1) != '/')
|
|
--cp;
|
|
strcpy(buf, cp);
|
|
buf += strlen(cp);
|
|
break;
|
|
|
|
default:
|
|
*buf++ = *fmt;
|
|
break;
|
|
}
|
|
++fmt;
|
|
}
|
|
else
|
|
*buf++ = *fmt++;
|
|
}
|
|
*buf = '\0';
|
|
}
|