172445Sassar/*
272445Sassar * Copyright (c) 2000 Kungliga Tekniska H�gskolan
372445Sassar * (Royal Institute of Technology, Stockholm, Sweden).
472445Sassar * All rights reserved.
572445Sassar *
672445Sassar * Redistribution and use in source and binary forms, with or without
772445Sassar * modification, are permitted provided that the following conditions
872445Sassar * are met:
972445Sassar *
1072445Sassar * 1. Redistributions of source code must retain the above copyright
1172445Sassar *    notice, this list of conditions and the following disclaimer.
1272445Sassar *
1372445Sassar * 2. Redistributions in binary form must reproduce the above copyright
1472445Sassar *    notice, this list of conditions and the following disclaimer in the
1572445Sassar *    documentation and/or other materials provided with the distribution.
1672445Sassar *
1772445Sassar * 3. Neither the name of the Institute nor the names of its contributors
1872445Sassar *    may be used to endorse or promote products derived from this software
1972445Sassar *    without specific prior written permission.
2072445Sassar *
2172445Sassar * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
2272445Sassar * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2372445Sassar * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2472445Sassar * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
2572445Sassar * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2672445Sassar * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2772445Sassar * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2872445Sassar * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2972445Sassar * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3072445Sassar * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3172445Sassar * SUCH DAMAGE.
3272445Sassar */
3372445Sassar
3472445Sassar#include "login_locl.h"
35178825SdfrRCSID("$Id: env.c 8476 2000-06-28 12:27:38Z joda $");
3672445Sassar
3772445Sassar/*
3872445Sassar * the environment we will send to execle and the shell.
3972445Sassar */
4072445Sassar
4172445Sassarchar **env;
4272445Sassarint num_env;
4372445Sassar
4472445Sassarvoid
4572445Sassarextend_env(char *str)
4672445Sassar{
4772445Sassar    env = realloc(env, (num_env + 1) * sizeof(*env));
4872445Sassar    if(env == NULL)
4972445Sassar	errx(1, "Out of memory!");
5072445Sassar    env[num_env++] = str;
5172445Sassar}
5272445Sassar
5372445Sassarvoid
5472445Sassaradd_env(const char *var, const char *value)
5572445Sassar{
5672445Sassar    int i;
5772445Sassar    char *str;
5872445Sassar    asprintf(&str, "%s=%s", var, value);
5972445Sassar    if(str == NULL)
6072445Sassar	errx(1, "Out of memory!");
6172445Sassar    for(i = 0; i < num_env; i++)
6272445Sassar	if(strncmp(env[i], var, strlen(var)) == 0 &&
6372445Sassar	   env[i][strlen(var)] == '='){
6472445Sassar	    free(env[i]);
6572445Sassar	    env[i] = str;
6672445Sassar	    return;
6772445Sassar	}
6872445Sassar
6972445Sassar    extend_env(str);
7072445Sassar}
7172445Sassar
7272445Sassarvoid
7372445Sassarcopy_env(void)
7472445Sassar{
7572445Sassar    char **p;
7672445Sassar    for(p = environ; *p; p++)
7772445Sassar	extend_env(*p);
7872445Sassar}
7972445Sassar
8072445Sassarint
8172445Sassarlogin_read_env(const char *file)
8272445Sassar{
8372445Sassar    char **newenv;
8472445Sassar    char *p;
8572445Sassar    int i, j;
8672445Sassar
8772445Sassar    newenv = NULL;
8872445Sassar    i = read_environment(file, &newenv);
8972445Sassar    for (j = 0; j < i; j++) {
9072445Sassar	p = strchr(newenv[j], '=');
9172445Sassar	*p++ = 0;
9272445Sassar	add_env(newenv[j], p);
9372445Sassar	*--p = '=';
9472445Sassar	free(newenv[j]);
9572445Sassar    }
9672445Sassar    free(newenv);
9772445Sassar    return 0;
9872445Sassar}
99