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/*
* FreeBSD install - a package for the installation and maintenance
* 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.
*
* Maxim Sobolev
* 8 September 2002
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "pkg.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
extern char **environ;
void
pkg_wrap(long curver, char **argv)
{
FILE* f;
char ver[9]; /* Format is: 'YYYYMMDD\0' */
char buffer[FILENAME_MAX+10]; /* Format is: 'YYYYMMDD <path>' */
char cmd[FILENAME_MAX+5]; /* Format is: '<path> -PPq' */
char *path, *cp;
long ptver, lpver;
if (getenv("PKG_NOWRAP") != NULL)
goto nowrap;
setenv("PKG_NOWRAP", "1", 1);
/* Get alternative location for package tools. */
if ((f = fopen(PKG_WRAPCONF_FNAME, "r")) == NULL) {
goto nowrap;
} else {
if (get_string(buffer, FILENAME_MAX+9, f) == NULL) {
goto nowrap;
} else {
if ((path = strrchr(buffer, ' ')) == NULL) {
goto nowrap;
} else {
*path++ = '\0';
}
}
}
if ((cp = strrchr(argv[0], '/')) == NULL) {
cp = argv[0];
} else {
cp++;
}
/* Get version of the other pkg_install and libpkg */
snprintf(cmd, FILENAME_MAX+10, "%s/%s -PPq", path, cp);
if ((f = popen(cmd, "r")) == NULL) {
perror("popen()");
goto nowrap;
} else {
if (get_string(ver, 9, f) == NULL)
goto nowrap;
else
ptver = strtol(ver, NULL, 10);
if (get_string(ver, 9, f) == NULL)
goto nowrap;
else
lpver = strtol(ver, NULL, 10);
pclose(f);
}
if ((lpver >= LIBPKG_VERSION) && (ptver > curver)) {
snprintf(cmd, FILENAME_MAX, "%s/%s", path, cp);
execve(cmd, argv, environ);
}
nowrap:
unsetenv("PKG_NOWRAP");
}
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