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/*
* Amanda, The Advanced Maryland Automatic Network Disk Archiver
* Copyright (c) 1991-1999 University of Maryland at College Park
* Copyright (c) 2007-2012 Zmanda, Inc. All Rights Reserved.
* Copyright (c) 2013-2016 Carbonite, Inc. All Rights Reserved.
* All Rights Reserved.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of U.M. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. U.M. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Authors: the Amanda Development Team. Its members are listed in a
* file named AUTHORS, in the root directory of this distribution.
*/
/*
* $Id: g_malloc.c 5280 2007-02-13 15:58:56Z martineau $
*
* Memory allocators with error handling. If the allocation fails,
* errordump() is called, relieving the caller from checking the return
* code
*/
#include "amanda.h"
/*
* safe_env_full - build a "safe" environment list.
*/
char **
safe_env_full(char **add)
{
gboolean keep_all_env;
static char *safe_env_list[] = {
"TZ",
#ifdef __CYGWIN__
"SYSTEMROOT",
#endif
#ifdef NEED_PATH_ENV
"PATH",
#endif
"DISPLAY",
#ifdef NEED_LD_LIBRARY_PATH_ENV
"LD_LIBRARY_PATH",
#endif
NULL
};
/*
* If the initial environment pointer malloc fails, set up to
* pass back a pointer to the NULL string pointer at the end of
* safe_env_list so our result is always a valid, although possibly
* empty, environment list.
*/
char **envp = safe_env_list + G_N_ELEMENTS(safe_env_list) - 1;
char **p;
char **q;
char *s;
char *v;
size_t l1, l2;
char **env;
int env_cnt;
int nadd = 0;
/* count ADD */
for (p = add; p && *p; p++)
nadd++;
#ifdef FAILURE_CODE
keep_all_env = TRUE;
#else
keep_all_env = (getuid() == geteuid() && getgid() == getegid());
#endif
if (keep_all_env) {
env_cnt = 1;
for (env = environ; *env != NULL; env++)
env_cnt++;
if ((q = (char **)malloc((nadd+env_cnt)*sizeof(char *))) != NULL) {
envp = q;
p = envp;
/* copy in ADD */
for (env = add; env && *env; env++) {
*p = *env;
p++;
}
for (env = environ; *env != NULL; env++) {
#ifdef FAILURE_CODE
{
#else
if (strncmp("LANG=", *env, 5) != 0 &&
strncmp("LC_", *env, 3) != 0) {
#endif
*p = g_strdup(*env);
p++;
}
}
*p = NULL;
}
return envp;
}
if ((q = (char **)malloc(nadd*sizeof(char *) + sizeof(safe_env_list))) != NULL) {
envp = q;
/* copy in ADD */
for (p = add; p && *p; p++) {
*q = *p;
q++;
}
/* and copy any SAFE_ENV that are already set */
for (p = safe_env_list; *p != NULL; p++) {
if ((v = getenv(*p)) == NULL) {
continue; /* no variable to dup */
}
l1 = strlen(*p); /* variable name w/o null */
l2 = strlen(v) + 1; /* include null byte here */
if ((s = (char *)malloc(l1 + 1 + l2)) == NULL) {
break; /* out of memory */
}
*q++ = s; /* save the new pointer */
memcpy(s, *p, l1); /* left hand side */
s += l1;
*s++ = '=';
memcpy(s, v, l2); /* right hand side and null */
}
*q = NULL; /* terminate the list */
}
return envp;
}
void
free_env(
char **env)
{
char **p;
for (p = env; *p != NULL; p++) {
g_free(*p);
}
g_free(env);
}
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