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/**
* Copyright (c) 2021, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __COSMOPOLITAN__
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#endif
#include "sha-256.h"
#include "tailer.h"
ssize_t send_packet(int fd,
tailer_packet_type_t tpt,
tailer_packet_payload_type_t payload_type,
...)
{
va_list args;
int done = 0;
va_start(args, payload_type);
write(fd, &tpt, sizeof(tpt));
do {
write(fd, &payload_type, sizeof(payload_type));
switch (payload_type) {
case TPPT_STRING: {
char *str = va_arg(args, char *);
uint32_t length = strlen(str);
write(fd, &length, sizeof(length));
write(fd, str, length);
break;
}
case TPPT_HASH: {
const char *hash = va_arg(args, const char *);
write(fd, hash, SHA256_BLOCK_SIZE);
break;
}
case TPPT_INT64: {
int64_t i = va_arg(args, int64_t);
write(fd, &i, sizeof(i));
break;
}
case TPPT_BITS: {
int32_t length = va_arg(args, int32_t);
const char *bits = va_arg(args, const char *);
write(fd, &length, sizeof(length));
write(fd, bits, length);
break;
}
case TPPT_DONE: {
done = 1;
break;
}
default: {
assert(0);
break;
}
}
if (!done) {
payload_type = va_arg(args, tailer_packet_payload_type_t);
}
} while (!done);
va_end(args);
return 0;
}
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