userio.c
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上传日期:2007-01-04
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- /*
- * Copyright (c) 1997, 1998, 1999
- * Inferno Nettverk A/S, Norway. 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. The above copyright notice, this list of conditions and the following
- * disclaimer must appear in all copies of the software, derivative works
- * or modified versions, and any portions thereof, aswell as in all
- * supporting documentation.
- * 2. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by
- * Inferno Nettverk A/S, Norway.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- *
- * Inferno Nettverk A/S requests users of this software to return to
- *
- * Software Distribution Coordinator or sdc@inet.no
- * Inferno Nettverk A/S
- * Oslo Research Park
- * Gaustadal閑n 21
- * N-0349 Oslo
- * Norway
- *
- * any improvements or extensions that they make and grant Inferno Nettverk A/S
- * the rights to redistribute these changes.
- *
- */
- #include "common.h"
- static const char rcsid[] =
- "$Id: userio.c,v 1.17 1999/05/25 17:22:39 michaels Exp $";
- /* ARGSUSED */
- char *
- socks_getusername(host, buf, buflen)
- const struct sockshost_t *host;
- char *buf;
- size_t buflen;
- {
- const char *function = "socks_getusername()";
- char *name;
- if ((name = getenv("SOCKS_USERNAME")) != NULL
- || (name = getenv("SOCKS_USER")) != NULL
- || (name = getenv("SOCKS5_USER")) != NULL)
- ;
- else {
- struct passwd *pw;
- if ((pw = getpwuid(getuid())) != NULL)
- name = pw->pw_name;
- }
- if (name == NULL)
- return NULL;
- if (strlen(name) >= buflen) {
- swarnx("%s: socks username %d characters too long, truncated",
- function, (strlen(name) + 1) - buflen);
- name[buflen - 1] = NUL;
- }
- strcpy(buf, name);
- return buf;
- }
- char *
- socks_getpassword(host, user, buf, buflen)
- const struct sockshost_t *host;
- const char *user;
- char *buf;
- size_t buflen;
- {
- const char *function = "socks_getpassword()";
- char *password;
- if ((password = getenv("SOCKS_PASSWORD")) != NULL
- || (password = getenv("SOCKS_PASSWD")) != NULL
- || (password = getenv("SOCKS5_PASSWD")) != NULL)
- ;
- else {
- char prompt[256 + MAXSOCKSHOSTSTRING];
- char hstring[MAXSOCKSHOSTSTRING];
- snprintf(prompt, sizeof(prompt), "%s@%s sockspassword: ",
- user, sockshost2string(host, hstring, sizeof(hstring)));
- password = getpass(prompt);
- }
- if (password == NULL)
- return NULL;
- if (strlen(password) >= buflen) {
- swarnx("%s: socks password %d characters too long, truncated",
- function, (strlen(password) + 1) - buflen);
- password[buflen - 1] = NUL;
- }
- strcpy(buf, password);
- bzero(password, strlen(password));
- return buf;
- }