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/*
* Copyright (C) 2007, 2017 David Shaw <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "extract.h"
#include <cstdio>
#include "output.h"
#include "packets.h"
#include "parse.h"
extern int verbose;
int extract(FILE *input, FILE *output, enum data_type output_type) {
struct packet *packet;
int offset;
unsigned char fingerprint[20];
unsigned char version = 0;
packet = parse(input, 5, 0);
if (!packet) {
fprintf(stderr, "Unable to find secret key packet\n");
return 1;
}
offset = extract_secrets(packet);
if (offset == -1) return 1;
if (verbose > 1) fprintf(stderr, "Secret offset is %d\n", offset);
calculate_fingerprint(packet, offset, fingerprint);
if (verbose) {
fprintf(stderr, "Primary key fingerprint: ");
print_bytes(stderr, fingerprint, 20);
fprintf(stderr, "\n");
}
output_start(output, output_type, fingerprint);
output_bytes(&version, 1);
output_bytes(packet->buf, 1);
output_bytes(fingerprint, 20);
output_length16(packet->len - offset);
output_bytes(&packet->buf[offset], packet->len - offset);
free_packet(packet);
while ((packet = parse(input, 7, 5))) {
offset = extract_secrets(packet);
if (offset == -1) return 1;
if (verbose > 1) fprintf(stderr, "Secret subkey offset is %d\n", offset);
calculate_fingerprint(packet, offset, fingerprint);
if (verbose) {
fprintf(stderr, "Subkey fingerprint: ");
print_bytes(stderr, fingerprint, 20);
fprintf(stderr, "\n");
}
output_bytes(packet->buf, 1);
output_bytes(fingerprint, 20);
output_length16(packet->len - offset);
output_bytes(&packet->buf[offset], packet->len - offset);
free_packet(packet);
}
output_finish();
output_end();
if (input == stdin) {
/* Consume everything else on input */
while ((fgetc(input) != EOF));
}
return 0;
}
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