diff options
Diffstat (limited to 'src/appl/telnet/libtelnet/setenv.c')
| -rw-r--r-- | src/appl/telnet/libtelnet/setenv.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/src/appl/telnet/libtelnet/setenv.c b/src/appl/telnet/libtelnet/setenv.c deleted file mode 100644 index a917af1cf4..0000000000 --- a/src/appl/telnet/libtelnet/setenv.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright (c) 1987, 1993 - * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. - */ - -/* based on @(#)setenv.c 8.1 (Berkeley) 6/4/93 */ -/* based on @(#)getenv.c 8.1 (Berkeley) 6/4/93 */ - -#ifndef __STDC__ -#define const -#endif - -#include <stddef.h> -#include <stdlib.h> -#include <string.h> - -#include "misc-proto.h" - -static char *__findenv (const char *, int *); - -/* - * setenv -- - * Set the value of the environmental variable "name" to be - * "value". If rewrite is set, replace any current value. - */ -#ifndef HAVE_SETENV -int -setenv(name, value, rewrite) - register const char *name; - register const char *value; - int rewrite; -{ - extern char **environ; - static int alloced; /* if allocated space before */ - register char *c; - const char *c2; - int l_value, offset; - - if (*value == '=') /* no `=' in value */ - ++value; - l_value = strlen(value); - if ((c = __findenv(name, &offset))) { /* find if already exists */ - if (!rewrite) - return (0); - if (strlen(c) >= l_value) { /* old larger; copy over */ - while ((*c++ = *value++)); - return (0); - } - } else { /* create new slot */ - register int cnt; - register char **p; - - for (p = environ, cnt = 0; *p; ++p, ++cnt); - if (alloced) { /* just increase size */ - environ = (char **)realloc((char *)environ, - (size_t)(sizeof(char *) * (cnt + 2))); - if (!environ) - return (-1); - } - else { /* get new space */ - alloced = 1; /* copy old entries into it */ - p = (char **)malloc((size_t)(sizeof(char *) * (cnt + 2))); - if (!p) - return (-1); - memcpy(p, environ, cnt * sizeof(char *)); - environ = p; - } - environ[cnt + 1] = NULL; - offset = cnt; - } - for (c2 = name; *c2 && *c2 != '='; ++c2); /* no `=' in name */ - if (!(environ[offset] = /* name + `=' + value */ - malloc((size_t)((int)(c2 - name) + l_value + 2)))) - return (-1); - for (c = environ[offset]; (*c = *name++) && *c != '='; ++c); - for (*c++ = '='; (*c++ = *value++);); - return (0); -} -#endif - -/* - * unsetenv(name) -- - * Delete environmental variable "name". - */ -#ifndef HAVE_UNSETENV -void -unsetenv(name) - const char *name; -{ - extern char **environ; - register char **p; - int offset; - - while (__findenv(name, &offset)) /* if set multiple times */ - for (p = &environ[offset];; ++p) - if (!(*p = *(p + 1))) - break; -} -#endif - -/* - * getenv -- - * Returns ptr to value associated with name, if any, else NULL. - */ -#ifndef HAVE_GETENV -char * -getenv(name) - const char *name; -{ - int offset; - - return (__findenv(name, &offset)); -} -#endif - -/* - * __findenv -- - * Returns pointer to value associated with name, if any, else NULL. - * Sets offset to be the offset of the name/value combination in the - * environmental array, for use by setenv(3) and unsetenv(3). - * Explicitly removes '=' in argument name. - */ -static char * -__findenv(name, offset) - register const char *name; - int *offset; -{ - extern char **environ; - register unsigned int len; - register const char *np; - register char **p, *c; - - if (name == NULL || environ == NULL) - return (NULL); - for (np = name; *np && *np != '='; ++np) - continue; - len = np - name; - for (p = environ; (c = *p) != NULL; ++p) - if (strncmp(c, name, len) == 0 && c[len] == '=') { - *offset = p - environ; - return (c + len + 1); - } - return (NULL); -} |