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/* $OpenBSD: fargs.c,v 1.22 2021/11/03 14:42:12 deraadt Exp $ */
/*
* Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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/stat.h>
#include <assert.h>
#include <err.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "extern.h"
#define RSYNC_PATH "rsync"
const char *
alt_base_mode(int mode)
{
switch (mode) {
case BASE_MODE_COMPARE:
return "--compare-dest";
case BASE_MODE_COPY:
return "--copy-dest";
case BASE_MODE_LINK:
return "--link-dest";
default:
errx(1, "unknown base mode %d", mode);
}
}
char **
fargs_cmdline(struct sess *sess, const struct fargs *f, size_t *skip)
{
arglist args;
size_t j;
char *rsync_path, *ap, *arg;
memset(&args, 0, sizeof args);
assert(f != NULL);
assert(f->sourcesz > 0);
if ((rsync_path = sess->opts->rsync_path) == NULL)
rsync_path = RSYNC_PATH;
if (f->host != NULL) {
/*
* Splice arguments from -e "foo bar baz" into array
* elements required for execve(2).
* This doesn't do anything fancy: it splits along
* whitespace into the array.
*/
if (sess->opts->ssh_prog) {
ap = strdup(sess->opts->ssh_prog);
if (ap == NULL)
err(ERR_NOMEM, NULL);
while ((arg = strsep(&ap, " \t")) != NULL) {
if (arg[0] == '\0') {
ap++; /* skip seperators */
continue;
}
addargs(&args, "%s", arg);
}
} else
addargs(&args, "ssh");
addargs(&args, "%s", f->host);
addargs(&args, "%s", rsync_path);
if (skip)
*skip = args.num;
addargs(&args, "--server");
if (f->mode == FARGS_RECEIVER)
addargs(&args, "--sender");
} else {
addargs(&args, "%s", rsync_path);
addargs(&args, "--server");
}
/* Shared arguments. */
if (sess->opts->del)
addargs(&args, "--delete");
if (sess->opts->numeric_ids)
addargs(&args, "--numeric-ids");
if (sess->opts->preserve_gids)
addargs(&args, "-g");
if (sess->opts->preserve_links)
addargs(&args, "-l");
if (sess->opts->dry_run)
addargs(&args, "-n");
if (sess->opts->preserve_uids)
addargs(&args, "-o");
if (sess->opts->preserve_perms)
addargs(&args, "-p");
if (sess->opts->devices)
addargs(&args, "-D");
if (sess->opts->recursive)
addargs(&args, "-r");
if (sess->opts->preserve_times)
addargs(&args, "-t");
if (verbose > 3)
addargs(&args, "-v");
if (verbose > 2)
addargs(&args, "-v");
if (verbose > 1)
addargs(&args, "-v");
if (verbose > 0)
addargs(&args, "-v");
if (sess->opts->one_file_system > 1)
addargs(&args, "-x");
if (sess->opts->one_file_system > 0)
addargs(&args, "-x");
if (sess->opts->specials && !sess->opts->devices)
addargs(&args, "--specials");
if (!sess->opts->specials && sess->opts->devices)
/* --devices is sent as -D --no-specials */
addargs(&args, "--no-specials");
if (sess->opts->max_size >= 0)
addargs(&args, "--max-size=%lld", sess->opts->max_size);
if (sess->opts->min_size >= 0)
addargs(&args, "--min-size=%lld", sess->opts->min_size);
/* only add --compare-dest, etc if this is the sender */
if (sess->opts->alt_base_mode != 0 &&
f->mode == FARGS_SENDER) {
for (j = 0; j < MAX_BASEDIR; j++) {
if (sess->opts->basedir[j] == NULL)
break;
addargs(&args, "%s=%s",
alt_base_mode(sess->opts->alt_base_mode),
sess->opts->basedir[j]);
}
}
/* Terminate with a full-stop for reasons unknown. */
addargs(&args, ".");
if (f->mode == FARGS_RECEIVER) {
for (j = 0; j < f->sourcesz; j++)
addargs(&args, "%s", f->sources[j]);
} else
addargs(&args, "%s", f->sink);
return args.list;
}
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