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* Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 2003
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* Inferno Nettverk A/S, Norway. All rights reserved.
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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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* 1. The above copyright notice, this list of conditions and the following
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* disclaimer must appear in all copies of the software, derivative works
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* or modified versions, and any portions thereof, aswell as in all
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* supporting documentation.
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* 2. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by
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* Inferno Nettverk A/S, Norway.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* Inferno Nettverk A/S requests users of this software to return to
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* Software Distribution Coordinator or sdc@inet.no
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* Inferno Nettverk A/S
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* any improvements or extensions that they make and grant Inferno Nettverk A/S
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* the rights to redistribute these changes.
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static const char rcsid[] =
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"$Id: method_uname.c,v 1.36 2003/07/01 13:21:30 michaels Exp $";
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clientmethod_uname(s, host, version)
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const struct sockshost_t *host;
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const char *function = "clientmethod_uname()";
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static struct authmethod_uname_t uname; /* cached userinfo. */
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static struct sockshost_t unamehost; /* host cache was gotten for. */
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static int unameisok; /* cached data is ok? */
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unsigned char *offset, *name, *password;
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unsigned char request[ 1 /* version. */
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+ 1 /* username length. */
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+ MAXNAMELEN /* username. */
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+ 1 /* password length. */
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+ MAXPWLEN /* password. */
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unsigned char response[ 1 /* version. */
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if (memcmp(&unamehost, host, sizeof(unamehost)) != 0)
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unameisok = 0; /* not same host as cache was gotten for. */
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/* fill in request. */
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*offset++ = (unsigned char)SOCKS_UNAMEVERSION;
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if ((name = (unsigned char *)socks_getusername(host, (char *)offset + 1,
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MAXNAMELEN)) == NULL) {
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swarn("%s: could not determine username of client", function);
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SASSERTX(strlen((char *)name) < sizeof(uname.name));
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strcpy((char *)uname.name, (char *)name);
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strcpy((char *)offset + 1, (char *)name);
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/* first byte gives length. */
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*offset = (unsigned char)strlen((char *)name);
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offset += *offset + 1;
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if ((password = (unsigned char *)socks_getpassword(host, (char *)name,
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(char *)offset + 1, MAXPWLEN)) == NULL) {
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swarn("%s: could not determine password of client", function);
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SASSERTX(strlen((char *)password) < sizeof(uname.password));
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strcpy((char *)uname.password, (char *)password);
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password = uname.password;
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strcpy((char *)offset + 1, (char *)password);
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/* first byte gives length. */
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*offset = (unsigned char)strlen((char *)password);
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offset += *offset + 1;
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if (writen(s, request, (size_t)(offset - request), NULL)
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!= offset - request) {
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swarn("%s: writen()", function);
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if (readn(s, response, sizeof(response), NULL) != sizeof(response)) {
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swarn("%s: readn()", function);
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if (request[UNAME_VERSION] != response[UNAME_VERSION]) {
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swarnx("%s: sent v%d, got v%d",
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function, request[UNAME_VERSION], response[UNAME_VERSION]);
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if (response[UNAME_STATUS] == 0) { /* server accepted. */
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return response[UNAME_STATUS];
added
removed
dlib/method_uname.c
