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Add missing pgcrypto files from previous commit.
This commit is contained in:
Bruce Momjian
213
contrib/pgcrypto/pgp-info.c
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213
contrib/pgcrypto/pgp-info.c
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/*
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* pgp-info.c
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* Provide info about PGP data.
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*
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* Copyright (c) 2005 Marko Kreen
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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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* $PostgreSQL: pgsql/contrib/pgcrypto/pgp-info.c,v 1.1 2005/07/10 13:46:28 momjian Exp $
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*/
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#include <postgres.h>
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#include "px.h"
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#include "mbuf.h"
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#include "pgp.h"
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static int read_pubkey_keyid(PullFilter *pkt, uint8 *keyid_buf)
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{
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int res = 0;
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PGP_PubKey *pk;
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res = pgp_key_alloc(&pk);
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if (res < 0)
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return res;
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res = _pgp_read_public_key(pkt, pk);
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if (res < 0)
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goto err;
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res = pgp_skip_packet(pkt);
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if (res < 0)
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goto err;
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res = 0;
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if (pk->algo == PGP_PUB_ELG_ENCRYPT)
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{
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memcpy(keyid_buf, pk->key_id, 8);
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res = 1;
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}
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err:
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pgp_key_free(pk);
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return res;
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}
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static int read_pubenc_keyid(PullFilter *pkt, uint8 *keyid_buf)
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{
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uint8 ver;
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int res;
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GETBYTE(pkt, ver);
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if (ver != 3)
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return -1;
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res = pullf_read_fixed(pkt, 8, keyid_buf);
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if (res < 0)
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return res;
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return pgp_skip_packet(pkt);
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}
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static const char hextbl[] = "0123456789ABCDEF";
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static int
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print_key(uint8 *keyid, char *dst)
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{
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int i;
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unsigned c;
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for (i = 0; i < 8; i++) {
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c = keyid[i];
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*dst++ = hextbl[(c >> 4) & 0x0F];
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*dst++ = hextbl[c & 0x0F];
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}
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*dst = 0;
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return 8*2;
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}
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static const uint8 any_key[] =
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{ 0, 0, 0, 0, 0, 0, 0, 0 };
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/*
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* dst should have room for 17 bytes
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*/
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int
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pgp_get_keyid(MBuf *pgp_data, char *dst)
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{
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int res;
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PullFilter *src;
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PullFilter *pkt = NULL;
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int len;
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uint8 tag;
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int got_pub_key=0, got_symenc_key=0, got_pubenc_key=0;
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int got_data=0;
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uint8 keyid_buf[8];
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res = pullf_create_mbuf_reader(&src, pgp_data);
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if (res < 0)
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return res;
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while (1) {
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res = pgp_parse_pkt_hdr(src, &tag, &len, 0);
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if (res <= 0)
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break;
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res = pgp_create_pkt_reader(&pkt, src, len, res, NULL);
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if (res < 0)
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break;
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switch (tag)
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{
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case PGP_PKT_SECRET_KEY:
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case PGP_PKT_PUBLIC_KEY:
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case PGP_PKT_SECRET_SUBKEY:
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case PGP_PKT_PUBLIC_SUBKEY:
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res = read_pubkey_keyid(pkt, keyid_buf);
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if (res < 0)
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break;
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if (res > 0)
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got_pub_key++;
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break;
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case PGP_PKT_PUBENCRYPTED_SESSKEY:
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got_pubenc_key++;
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res = read_pubenc_keyid(pkt, keyid_buf);
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break;
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case PGP_PKT_SYMENCRYPTED_DATA:
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case PGP_PKT_SYMENCRYPTED_DATA_MDC:
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got_data = 1;
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break;
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case PGP_PKT_SYMENCRYPTED_SESSKEY:
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got_symenc_key++;
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/* fallthru */
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case PGP_PKT_SIGNATURE:
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case PGP_PKT_MARKER:
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case PGP_PKT_TRUST:
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case PGP_PKT_USER_ID:
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case PGP_PKT_USER_ATTR:
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case PGP_PKT_PRIV_61:
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res = pgp_skip_packet(pkt);
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break;
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default:
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res = PXE_PGP_CORRUPT_DATA;
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}
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if (pkt)
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pullf_free(pkt);
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pkt = NULL;
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if (res < 0 || got_data)
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break;
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}
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pullf_free(src);
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if (pkt)
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pullf_free(pkt);
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if (res < 0)
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return res;
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/* now check sanity */
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if (got_pub_key && got_pubenc_key)
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res = PXE_PGP_CORRUPT_DATA;
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if (got_pub_key > 1)
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res = -1;
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if (got_pubenc_key > 1)
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res = -1;
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/*
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* if still ok, look what we got
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*/
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if (res >= 0)
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{
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if (got_pubenc_key || got_pub_key)
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{
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if (memcmp(keyid_buf, any_key, 8) == 0)
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{
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memcpy(dst, "ANYKEY", 7);
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res = 6;
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}
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else
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res = print_key(keyid_buf, dst);
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}
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else if (got_symenc_key)
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{
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memcpy(dst, "SYMKEY", 7);
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res = 6;
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}
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else
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res = PXE_PGP_NO_USABLE_KEY;
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}
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return res;
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}
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