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Diffstat (limited to 'crypto/heimdal/appl/login/env.c')
-rw-r--r-- | crypto/heimdal/appl/login/env.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/crypto/heimdal/appl/login/env.c b/crypto/heimdal/appl/login/env.c new file mode 100644 index 0000000..57f68b1 --- /dev/null +++ b/crypto/heimdal/appl/login/env.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2000 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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. + */ + +#include "login_locl.h" +RCSID("$Id: env.c,v 1.1 2000/06/28 12:27:38 joda Exp $"); + +/* + * the environment we will send to execle and the shell. + */ + +char **env; +int num_env; + +void +extend_env(char *str) +{ + env = realloc(env, (num_env + 1) * sizeof(*env)); + if(env == NULL) + errx(1, "Out of memory!"); + env[num_env++] = str; +} + +void +add_env(const char *var, const char *value) +{ + int i; + char *str; + asprintf(&str, "%s=%s", var, value); + if(str == NULL) + errx(1, "Out of memory!"); + for(i = 0; i < num_env; i++) + if(strncmp(env[i], var, strlen(var)) == 0 && + env[i][strlen(var)] == '='){ + free(env[i]); + env[i] = str; + return; + } + + extend_env(str); +} + +void +copy_env(void) +{ + char **p; + for(p = environ; *p; p++) + extend_env(*p); +} + +int +login_read_env(const char *file) +{ + char **newenv; + char *p; + int i, j; + + newenv = NULL; + i = read_environment(file, &newenv); + for (j = 0; j < i; j++) { + p = strchr(newenv[j], '='); + *p++ = 0; + add_env(newenv[j], p); + *--p = '='; + free(newenv[j]); + } + free(newenv); + return 0; +} |