120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/* $OpenBSD: check.c,v 1.2 1999/10/04 21:46:27 espie Exp $ */
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/*-
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* Copyright (c) 1999 Marc Espie.
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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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* 3. 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 Marc Espie for the OpenBSD
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* Project.
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*
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* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
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* PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/* Simple code for a stand-alone package checker */
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "stand.h"
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#include "pgp.h"
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#include "gzip.h"
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#include "extern.h"
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struct checker {
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void *context;
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void (*add)(void *, const char *, size_t);
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int (*get)(void *);
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int status;
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};
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#define MAX_CHECKERS 20
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int
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check_signature(file, userid, envp, filename)
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/*@dependent@*/FILE *file;
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const char *userid;
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char *envp[];
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/*@observer@*/const char *filename;
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{
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struct signature *sign;
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struct mygzip_header h;
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int status;
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char buffer[1024];
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size_t length;
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struct checker checker[MAX_CHECKERS];
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struct signature *sweep;
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int i, j;
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status = read_header_and_diagnose(file, &h, &sign, filename);
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if (status != 1)
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return PKG_UNSIGNED;
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for (sweep = sign, i = 0;
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sweep != NULL && i < MAX_CHECKERS;
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sweep=sweep->next, i++) {
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switch(sweep->type) {
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case TAG_OLD:
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fprintf(stderr, "File %s uses old signatures, no longer supported\n",
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filename);
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checker[i].context = NULL;
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break;
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case TAG_X509:
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checker[i].context = new_x509_checker(&h, sweep, userid, envp, filename);
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checker[i].add = x509_add;
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checker[i].get = x509_sign_ok;
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break;
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case TAG_SHA1:
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checker[i].context = new_sha1_checker(&h, sweep, userid, envp, filename);
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checker[i].add = sha1_add;
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checker[i].get = sha1_sign_ok;
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break;
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case TAG_PGP:
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checker[i].context = new_pgp_checker(&h, sweep, userid, envp, filename);
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checker[i].add = pgp_add;
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checker[i].get = pgp_sign_ok;
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break;
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default:
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abort();
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}
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}
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while ((length = fread(buffer, 1, sizeof buffer, file)) > 0) {
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for (j = 0; j < i; j++) {
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if (checker[j].context) {
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(*checker[j].add)(checker[j].context, buffer, length);
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}
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}
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}
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// for (j = i-1; j >= 0; j--)
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for (j = 0; j < i; j++) {
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if (checker[j].context) {
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checker[j].status = (*checker[j].get)(checker[j].context);
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} else {
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checker[j].status = PKG_SIGERROR;
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}
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}
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free_signature(sign);
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return checker[0].status;
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}
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