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5e53a4f90f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
420 lines
8.8 KiB
C
420 lines
8.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Doug Rabson
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* All rights reserved.
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*
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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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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/queue.h>
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#include <rpc/rpc.h>
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#include <rpc/rpcsec_gss.h>
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#include "rpcsec_gss_int.h"
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#ifndef _PATH_GSS_MECH
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#define _PATH_GSS_MECH "/etc/gss/mech"
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#endif
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#ifndef _PATH_GSS_QOP
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#define _PATH_GSS_QOP "/etc/gss/qop"
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#endif
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struct mech_info {
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SLIST_ENTRY(mech_info) link;
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char *name;
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gss_OID_desc oid;
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const char **qops;
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char *lib;
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char *kobj;
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};
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SLIST_HEAD(mech_info_list, mech_info);
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static struct mech_info_list mechs = SLIST_HEAD_INITIALIZER(mechs);
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static const char **mech_names;
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struct qop_info {
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SLIST_ENTRY(qop_info) link;
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char *name;
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char* mech;
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u_int qop;
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};
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SLIST_HEAD(qop_info_list, qop_info);
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static struct qop_info_list qops = SLIST_HEAD_INITIALIZER(qops);
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static int
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_rpc_gss_string_to_oid(const char* s, gss_OID oid)
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{
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int number_count, i, j;
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int byte_count;
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const char *p, *q;
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char *res;
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/*
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* First figure out how many numbers in the oid, then
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* calculate the compiled oid size.
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*/
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number_count = 0;
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for (p = s; p; p = q) {
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q = strchr(p, '.');
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if (q) q = q + 1;
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number_count++;
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}
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/*
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* The first two numbers are in the first byte and each
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* subsequent number is encoded in a variable byte sequence.
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*/
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if (number_count < 2)
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return (EINVAL);
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/*
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* We do this in two passes. The first pass, we just figure
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* out the size. Second time around, we actually encode the
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* number.
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*/
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res = 0;
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for (i = 0; i < 2; i++) {
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byte_count = 0;
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for (p = s, j = 0; p; p = q, j++) {
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u_int number = 0;
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/*
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* Find the end of this number.
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*/
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q = strchr(p, '.');
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if (q) q = q + 1;
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/*
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* Read the number of of the string. Don't
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* bother with anything except base ten.
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*/
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while (*p && *p != '.') {
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number = 10 * number + (*p - '0');
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p++;
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}
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/*
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* Encode the number. The first two numbers
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* are packed into the first byte. Subsequent
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* numbers are encoded in bytes seven bits at
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* a time with the last byte having the high
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* bit set.
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*/
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if (j == 0) {
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if (res)
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*res = number * 40;
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} else if (j == 1) {
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if (res) {
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*res += number;
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res++;
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}
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byte_count++;
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} else if (j >= 2) {
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/*
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* The number is encoded in seven bit chunks.
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*/
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u_int t;
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int bytes;
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bytes = 0;
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for (t = number; t; t >>= 7)
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bytes++;
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if (bytes == 0) bytes = 1;
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while (bytes) {
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if (res) {
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int bit = 7*(bytes-1);
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*res = (number >> bit) & 0x7f;
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if (bytes != 1)
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*res |= 0x80;
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res++;
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}
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byte_count++;
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bytes--;
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}
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}
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}
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if (!res) {
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res = malloc(byte_count);
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if (!res)
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return (ENOMEM);
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oid->length = byte_count;
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oid->elements = res;
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}
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}
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return (0);
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}
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static void
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_rpc_gss_load_mech(void)
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{
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FILE *fp;
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char buf[256];
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char *p;
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char *name, *oid, *lib, *kobj;
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struct mech_info *info;
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int count;
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const char **pp;
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if (SLIST_FIRST(&mechs))
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return;
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fp = fopen(_PATH_GSS_MECH, "r");
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if (!fp)
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return;
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count = 0;
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while (fgets(buf, sizeof(buf), fp)) {
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if (*buf == '#')
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continue;
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p = buf;
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name = strsep(&p, "\t\n ");
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if (p) while (isspace(*p)) p++;
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oid = strsep(&p, "\t\n ");
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if (p) while (isspace(*p)) p++;
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lib = strsep(&p, "\t\n ");
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if (p) while (isspace(*p)) p++;
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kobj = strsep(&p, "\t\n ");
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if (!name || !oid || !lib || !kobj)
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continue;
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info = malloc(sizeof(struct mech_info));
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if (!info)
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break;
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if (_rpc_gss_string_to_oid(oid, &info->oid)) {
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free(info);
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continue;
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}
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info->name = strdup(name);
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info->qops = NULL;
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info->lib = strdup(lib);
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info->kobj = strdup(kobj);
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SLIST_INSERT_HEAD(&mechs, info, link);
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count++;
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}
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fclose(fp);
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mech_names = malloc((count + 1) * sizeof(char*));
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pp = mech_names;
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SLIST_FOREACH(info, &mechs, link) {
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*pp++ = info->name;
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}
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*pp = NULL;
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}
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static void
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_rpc_gss_load_qop(void)
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{
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FILE *fp;
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char buf[256];
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char *p;
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char *name, *num, *mech;
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struct mech_info *minfo;
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struct qop_info *info;
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int count;
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const char **mech_qops;
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const char **pp;
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if (SLIST_FIRST(&qops))
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return;
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fp = fopen(_PATH_GSS_QOP, "r");
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if (!fp)
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return;
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while (fgets(buf, sizeof(buf), fp)) {
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if (*buf == '#')
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continue;
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p = buf;
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name = strsep(&p, "\t\n ");
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if (p) while (isspace(*p)) p++;
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num = strsep(&p, "\t\n ");
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if (p) while (isspace(*p)) p++;
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mech = strsep(&p, "\t\n ");
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if (!name || !num || !mech)
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continue;
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info = malloc(sizeof(struct qop_info));
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if (!info)
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break;
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info->name = strdup(name);
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info->qop = strtoul(name, 0, 0);
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info->mech = strdup(mech);
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SLIST_INSERT_HEAD(&qops, info, link);
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}
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fclose(fp);
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/*
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* Compile lists of qops for each mechanism.
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*/
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SLIST_FOREACH(minfo, &mechs, link) {
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count = 0;
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SLIST_FOREACH(info, &qops, link) {
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if (strcmp(info->mech, minfo->name) == 0)
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count++;
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}
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mech_qops = malloc((count + 1) * sizeof(char*));
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pp = mech_qops;
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SLIST_FOREACH(info, &qops, link) {
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if (strcmp(info->mech, minfo->name) == 0)
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*pp++ = info->name;
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}
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*pp = NULL;
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minfo->qops = mech_qops;
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}
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}
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bool_t
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rpc_gss_mech_to_oid(const char *mech, gss_OID *oid_ret)
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{
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struct mech_info *info;
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_rpc_gss_load_mech();
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SLIST_FOREACH(info, &mechs, link) {
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if (!strcmp(info->name, mech)) {
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*oid_ret = &info->oid;
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return (TRUE);
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}
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}
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_rpc_gss_set_error(RPC_GSS_ER_SYSTEMERROR, ENOENT);
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return (FALSE);
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}
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bool_t
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rpc_gss_oid_to_mech(gss_OID oid, const char **mech_ret)
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{
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struct mech_info *info;
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_rpc_gss_load_mech();
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SLIST_FOREACH(info, &mechs, link) {
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if (oid->length == info->oid.length
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&& !memcmp(oid->elements, info->oid.elements,
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oid->length)) {
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*mech_ret = info->name;
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return (TRUE);
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}
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}
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_rpc_gss_set_error(RPC_GSS_ER_SYSTEMERROR, ENOENT);
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return (FALSE);
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}
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bool_t
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rpc_gss_qop_to_num(const char *qop, const char *mech, u_int *num_ret)
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{
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struct qop_info *info;
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_rpc_gss_load_qop();
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SLIST_FOREACH(info, &qops, link) {
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if (strcmp(info->name, qop) == 0
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&& strcmp(info->mech, mech) == 0) {
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*num_ret = info->qop;
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return (TRUE);
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}
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}
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_rpc_gss_set_error(RPC_GSS_ER_SYSTEMERROR, ENOENT);
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return (FALSE);
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}
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const char *
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_rpc_gss_num_to_qop(const char *mech, u_int num)
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{
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struct qop_info *info;
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if (num == GSS_C_QOP_DEFAULT)
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return "default";
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_rpc_gss_load_qop();
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SLIST_FOREACH(info, &qops, link) {
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if (info->qop == num && strcmp(info->mech, mech) == 0) {
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return (info->name);
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}
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}
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return (NULL);
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}
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const char **
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rpc_gss_get_mechanisms(void)
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{
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_rpc_gss_load_mech();
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return (mech_names);
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}
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const char **
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rpc_gss_get_mech_info(const char *mech, rpc_gss_service_t *service)
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{
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struct mech_info *info;
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_rpc_gss_load_mech();
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_rpc_gss_load_qop();
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SLIST_FOREACH(info, &mechs, link) {
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if (!strcmp(mech, info->name)) {
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/*
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* I'm not sure what to do with service
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* here. The Solaris manpages are not clear on
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* the subject and the OpenSolaris code just
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* sets it to rpc_gss_svc_privacy
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* unconditionally with a comment noting that
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* it is bogus.
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*/
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*service = rpc_gss_svc_privacy;
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return info->qops;
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}
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}
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_rpc_gss_set_error(RPC_GSS_ER_SYSTEMERROR, ENOENT);
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return (NULL);
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}
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bool_t
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rpc_gss_get_versions(u_int *vers_hi, u_int *vers_lo)
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{
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*vers_hi = 1;
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*vers_lo = 1;
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return (TRUE);
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}
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bool_t
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rpc_gss_is_installed(const char *mech)
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{
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struct mech_info *info;
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_rpc_gss_load_mech();
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SLIST_FOREACH(info, &mechs, link)
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if (!strcmp(mech, info->name))
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return (TRUE);
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return (FALSE);
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}
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