99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/*
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* Copyright (c) 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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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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*
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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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*
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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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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "login_locl.h"
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RCSID("$Id: env.c,v 1.1 2000/06/28 12:27:38 joda Exp $");
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/*
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* the environment we will send to execle and the shell.
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*/
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char **env;
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int num_env;
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void
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extend_env(char *str)
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{
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env = realloc(env, (num_env + 1) * sizeof(*env));
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if(env == NULL)
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errx(1, "Out of memory!");
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env[num_env++] = str;
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}
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void
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add_env(const char *var, const char *value)
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{
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int i;
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char *str;
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asprintf(&str, "%s=%s", var, value);
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if(str == NULL)
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errx(1, "Out of memory!");
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for(i = 0; i < num_env; i++)
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if(strncmp(env[i], var, strlen(var)) == 0 &&
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env[i][strlen(var)] == '='){
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free(env[i]);
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env[i] = str;
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return;
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}
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extend_env(str);
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}
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void
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copy_env(void)
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{
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char **p;
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for(p = environ; *p; p++)
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extend_env(*p);
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}
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int
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login_read_env(const char *file)
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{
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char **newenv;
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char *p;
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int i, j;
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newenv = NULL;
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i = read_environment(file, &newenv);
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for (j = 0; j < i; j++) {
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p = strchr(newenv[j], '=');
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*p++ = 0;
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add_env(newenv[j], p);
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*--p = '=';
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free(newenv[j]);
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}
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free(newenv);
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return 0;
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}
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