/*
* Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <sys/limits.h>
#include <sys/syslimits.h>
#include <stdint.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sha1.h>
#include <zlib.h>
#include "got_error.h"
#include "got_object.h"
#include "got_lib_delta.h"
#include "got_lib_inflate.h"
#include "got_lib_object.h"
#include "got_lib_object_parse.h"
#include "got_lib_privsep.h"
int
main(int argc, char *argv[])
{
const struct got_error *err = NULL;
struct imsgbuf ibuf;
size_t datalen;
imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
#ifndef PROFILE
/* revoke access to most system calls */
if (pledge("stdio recvfd", NULL) == -1) {
err = got_error_from_errno();
got_privsep_send_error(&ibuf, err);
return 1;
}
#endif
while (1) {
struct imsg imsg, imsg_outfd;
FILE *f = NULL;
size_t size;
memset(&imsg, 0, sizeof(imsg));
imsg.fd = -1;
memset(&imsg_outfd, 0, sizeof(imsg_outfd));
imsg_outfd.fd = -1;
err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
if (err) {
if (err->code == GOT_ERR_PRIVSEP_PIPE)
err = NULL;
break;
}
if (imsg.hdr.type == GOT_IMSG_STOP)
break;
if (imsg.hdr.type != GOT_IMSG_BLOB_REQUEST) {
err = got_error(GOT_ERR_PRIVSEP_MSG);
goto done;
}
datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
if (datalen != 0) {
err = got_error(GOT_ERR_PRIVSEP_LEN);
goto done;
}
if (imsg.fd == -1) {
err = got_error(GOT_ERR_PRIVSEP_NO_FD);
goto done;
}
err = got_privsep_recv_imsg(&imsg_outfd, &ibuf, 0);
if (err) {
if (imsg.hdr.len == 0)
err = NULL;
break;
}
if (imsg_outfd.hdr.type == GOT_IMSG_STOP)
break;
if (imsg_outfd.hdr.type != GOT_IMSG_BLOB_OUTFD) {
err = got_error(GOT_ERR_PRIVSEP_MSG);
goto done;
}
datalen = imsg_outfd.hdr.len - IMSG_HEADER_SIZE;
if (datalen != 0) {
err = got_error(GOT_ERR_PRIVSEP_LEN);
goto done;
}
if (imsg_outfd.fd == -1) {
err = got_error(GOT_ERR_PRIVSEP_NO_FD);
goto done;
}
f = fdopen(imsg.fd, "rb");
if (f == NULL) {
err = got_error_from_errno();
goto done;
}
err = got_inflate_to_fd(&size, f, imsg_outfd.fd);
if (err)
goto done;
err = got_privsep_send_blob(&ibuf, size);
done:
if (f)
fclose(f);
else if (imsg.fd != -1)
close(imsg.fd);
if (imsg_outfd.fd != -1)
close(imsg_outfd.fd);
imsg_free(&imsg);
imsg_free(&imsg_outfd);
if (err) {
if (err->code == GOT_ERR_PRIVSEP_PIPE)
err = NULL;
else
got_privsep_send_error(&ibuf, err);
break;
}
}
imsg_clear(&ibuf);
if (err)
fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
close(GOT_IMSG_FD_CHILD);
return err ? 1 : 0;
}
