[svn-upgrade] Integrating new upstream version, shadow (19990709)
This commit is contained in:
nekral-guest
277
libmisc/setupenv.c
Normal file
277
libmisc/setupenv.c
Normal file
@@ -0,0 +1,277 @@
|
||||
/*
|
||||
* Copyright 1989 - 1994, Julianne Frances Haugh
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Separated from setup.c. --marekm
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
|
||||
#include "rcsid.h"
|
||||
RCSID("$Id: setupenv.c,v 1.9 1999/03/07 19:14:41 marekm Exp $")
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
|
||||
#include "prototypes.h"
|
||||
#include "defines.h"
|
||||
#include <pwd.h>
|
||||
#include "getdef.h"
|
||||
|
||||
static void
|
||||
addenv_path(const char *varname, const char *dirname, const char *filename)
|
||||
{
|
||||
char *buf;
|
||||
|
||||
buf = xmalloc(strlen(dirname) + strlen(filename) + 2);
|
||||
sprintf(buf, "%s/%s", dirname, filename);
|
||||
addenv(varname, buf);
|
||||
free(buf);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
read_env_file(const char *filename)
|
||||
{
|
||||
FILE *fp;
|
||||
char buf[1024];
|
||||
char *cp, *name, *val;
|
||||
|
||||
fp = fopen(filename, "r");
|
||||
if (!fp)
|
||||
return;
|
||||
while (fgets(buf, sizeof buf, fp) == buf) {
|
||||
cp = strrchr(buf, '\n');
|
||||
if (!cp)
|
||||
break;
|
||||
*cp = '\0';
|
||||
|
||||
cp = buf;
|
||||
/* ignore whitespace and comments */
|
||||
while (*cp && isspace(*cp))
|
||||
cp++;
|
||||
if (*cp == '\0' || *cp == '#')
|
||||
continue;
|
||||
/*
|
||||
* ignore lines which don't follow the name=value format
|
||||
* (for example, the "export NAME" shell commands)
|
||||
*/
|
||||
name = cp;
|
||||
while (*cp && !isspace(*cp) && *cp != '=')
|
||||
cp++;
|
||||
if (*cp != '=')
|
||||
continue;
|
||||
/* NUL-terminate the name */
|
||||
*cp++ = '\0';
|
||||
val = cp;
|
||||
#if 0 /* XXX untested, and needs rewrite with fewer goto's :-) */
|
||||
/*
|
||||
(state, char_type) -> (state, action)
|
||||
|
||||
state: unquoted, single_quoted, double_quoted, escaped, double_quoted_escaped
|
||||
char_type: normal, white, backslash, single, double
|
||||
action: remove_curr, remove_curr_skip_next, remove_prev, finish XXX
|
||||
*/
|
||||
no_quote:
|
||||
if (*cp == '\\') {
|
||||
/* remove the backslash */
|
||||
remove_char(cp);
|
||||
/* skip over the next character */
|
||||
if (*cp)
|
||||
cp++;
|
||||
goto no_quote;
|
||||
} else if (*cp == '\'') {
|
||||
/* remove the quote */
|
||||
remove_char(cp);
|
||||
/* now within single quotes */
|
||||
goto s_quote;
|
||||
} else if (*cp == '"') {
|
||||
/* remove the quote */
|
||||
remove_char(cp);
|
||||
/* now within double quotes */
|
||||
goto d_quote;
|
||||
} else if (*cp == '\0') {
|
||||
/* end of string */
|
||||
goto finished;
|
||||
} else if (isspace(*cp)) {
|
||||
/* unescaped whitespace - end of string */
|
||||
*cp = '\0';
|
||||
goto finished;
|
||||
} else {
|
||||
cp++;
|
||||
goto no_quote;
|
||||
}
|
||||
s_quote:
|
||||
if (*cp == '\'') {
|
||||
/* remove the quote */
|
||||
remove_char(cp);
|
||||
/* unquoted again */
|
||||
goto no_quote;
|
||||
} else if (*cp == '\0') {
|
||||
/* end of string */
|
||||
goto finished;
|
||||
} else {
|
||||
/* preserve everything within single quotes */
|
||||
cp++;
|
||||
goto s_quote;
|
||||
}
|
||||
d_quote:
|
||||
if (*cp == '\"') {
|
||||
/* remove the quote */
|
||||
remove_char(cp);
|
||||
/* unquoted again */
|
||||
goto no_quote;
|
||||
} else if (*cp == '\\') {
|
||||
cp++;
|
||||
/* if backslash followed by double quote, remove backslash
|
||||
else skip over the backslash and following char */
|
||||
if (*cp == '"')
|
||||
remove_char(cp - 1);
|
||||
else if (*cp)
|
||||
cp++;
|
||||
goto d_quote;
|
||||
} eise if (*cp == '\0') {
|
||||
/* end of string */
|
||||
goto finished;
|
||||
} else {
|
||||
/* preserve everything within double quotes */
|
||||
goto d_quote;
|
||||
}
|
||||
finished:
|
||||
#endif /* 0 */
|
||||
/*
|
||||
* XXX - should handle quotes, backslash escapes, etc.
|
||||
* like the shell does.
|
||||
*/
|
||||
addenv(name, val);
|
||||
}
|
||||
fclose(fp);
|
||||
}
|
||||
|
||||
/*
|
||||
* change to the user's home directory
|
||||
* set the HOME, SHELL, MAIL, PATH, and LOGNAME or USER environmental
|
||||
* variables.
|
||||
*/
|
||||
|
||||
void
|
||||
setup_env(struct passwd *info)
|
||||
{
|
||||
char *cp, *envf;
|
||||
|
||||
/*
|
||||
* Change the current working directory to be the home directory
|
||||
* of the user. It is a fatal error for this process to be unable
|
||||
* to change to that directory. There is no "default" home
|
||||
* directory.
|
||||
*
|
||||
* We no longer do it as root - should work better on NFS-mounted
|
||||
* home directories. Some systems default to HOME=/, so we make
|
||||
* this a configurable option. --marekm
|
||||
*/
|
||||
|
||||
if (chdir(info->pw_dir) == -1) {
|
||||
static char temp_pw_dir[] = "/";
|
||||
if (!getdef_bool("DEFAULT_HOME") || chdir("/") == -1) {
|
||||
fprintf(stderr, _("Unable to cd to \"%s\"\n"),
|
||||
info->pw_dir);
|
||||
SYSLOG((LOG_WARN,
|
||||
"unable to cd to `%s' for user `%s'\n",
|
||||
info->pw_dir, info->pw_name));
|
||||
closelog();
|
||||
exit (1);
|
||||
}
|
||||
puts(_("No directory, logging in with HOME=/"));
|
||||
info->pw_dir = temp_pw_dir;
|
||||
}
|
||||
|
||||
/*
|
||||
* Create the HOME environmental variable and export it.
|
||||
*/
|
||||
|
||||
addenv("HOME", info->pw_dir);
|
||||
|
||||
/*
|
||||
* Create the SHELL environmental variable and export it.
|
||||
*/
|
||||
|
||||
if (info->pw_shell == (char *) 0 || ! *info->pw_shell) {
|
||||
static char temp_pw_shell[] = "/bin/sh";
|
||||
info->pw_shell = temp_pw_shell;
|
||||
}
|
||||
|
||||
addenv("SHELL", info->pw_shell);
|
||||
|
||||
/*
|
||||
* Create the PATH environmental variable and export it.
|
||||
*/
|
||||
|
||||
cp = getdef_str( info->pw_uid == 0 ? "ENV_SUPATH" : "ENV_PATH" );
|
||||
addenv(cp ? cp : "PATH=/bin:/usr/bin", NULL);
|
||||
|
||||
/*
|
||||
* Export the user name. For BSD derived systems, it's "USER", for
|
||||
* all others it's "LOGNAME". We set both of them.
|
||||
*/
|
||||
|
||||
addenv("USER", info->pw_name);
|
||||
addenv("LOGNAME", info->pw_name);
|
||||
|
||||
/*
|
||||
* MAILDIR environment variable for Qmail
|
||||
*/
|
||||
if ((cp=getdef_str("QMAIL_DIR")))
|
||||
addenv_path("MAILDIR", info->pw_dir, cp);
|
||||
|
||||
/*
|
||||
* Create the MAIL environmental variable and export it. login.defs
|
||||
* knows the prefix.
|
||||
*/
|
||||
|
||||
if ((cp=getdef_str("MAIL_DIR")))
|
||||
addenv_path("MAIL", cp, info->pw_name);
|
||||
else if ((cp=getdef_str("MAIL_FILE")))
|
||||
addenv_path("MAIL", info->pw_dir, cp);
|
||||
else {
|
||||
#if defined(MAIL_SPOOL_FILE)
|
||||
addenv_path("MAIL", info->pw_dir, MAIL_SPOOL_FILE);
|
||||
#elif defined(MAIL_SPOOL_DIR)
|
||||
addenv_path("MAIL", MAIL_SPOOL_DIR, info->pw_name);
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* Read environment from optional config file. --marekm
|
||||
*/
|
||||
if ((envf = getdef_str("ENVIRON_FILE")))
|
||||
read_env_file(envf);
|
||||
}
|
||||
Reference in New Issue
Block a user