thodg/got/regress/delta/delta_test.c

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• Hash : d58ddaf3
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  Date : 2022-03-17T20:02:40
  

  const-ify tables ok thomas_adam millert

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• regress/delta/delta_test.c

• /*
   * Copyright (c) 2018, 2019 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/queue.h>
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <err.h>
  #include <unistd.h>
  #include <getopt.h>
  
  #include "got_error.h"
  #include "got_opentemp.h"
  #include "got_path.h"
  
  #include "got_lib_delta.h"
  
  #ifndef nitems
  #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
  #endif
  
  const struct delta_test {
  	const char *base;
  	size_t base_len;
  	const char *delta;
  	size_t delta_len;
  	const char *expected;
  	size_t result_len;
  } delta_tests[] = {
  	/* base len 0, target len 4, append 4 'x' */
  	{ "", 0, "\x00\x04\x04xxxx", 7, "xxxx", 4 },
  	/* copy 4 bytes at offset 0 from base, append 4 'x' */
  	{ "aabbccdd", 8, "\x08\x08\x90\x04\x04xxxx", 9, "aabbxxxx", 8 },
  	/* copy 4 bytes at offset 4 from base, append 4 'x' */
  	{ "aabbccdd", 8, "\x08\x08\x91\x04\x04\x04xxxx", 10, "ccddxxxx", 8 },
  	/* git 48fb7deb5 Fix big left-shifts of unsigned char, 2009-06-17) */
  	{ "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
  	  16, "\x10\x10\xff\xff\xff\xff\xff\x10\00\00", 10 , NULL, 0 },
  	/* libgit2 9844d38be delta: fix out-of-bounds read of delta */
  	{ "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
  	  16, "\x10\x70\xff", 3, NULL, 0}
  };
  
  static int
  delta_apply(void)
  {
  	const struct got_error *err = NULL;
  	size_t i;
  	FILE *result_file;
  
  	result_file = got_opentemp();
  	if (result_file == NULL)
  		return 1;
  
  	for (i = 0; i < nitems(delta_tests); i++) {
  		const struct delta_test *dt = &delta_tests[i];
  		FILE *base_file;
  		char buf[1024];
  		size_t n, result_len;
  
  		base_file = got_opentemp();
  		if (base_file == NULL) {
  			err = got_error_from_errno("got_opentemp");
  			break;
  		}
  
  		n = fwrite(dt->base, 1, dt->base_len, base_file);
  		if (n != dt->base_len) {
  			err = got_ferror(base_file, GOT_ERR_IO);
  			break;
  		}
  		rewind(base_file);
  
  		err = got_delta_apply(base_file, dt->delta, dt->delta_len,
  		    result_file, &result_len);
  		if (fclose(base_file) == EOF && err == NULL)
  			err = got_error_from_errno("fclose");
  		if (dt->expected == NULL) {
  			/* Invalid delta, expect an error. */
  			if (err == NULL)
  				err = got_error(GOT_ERR_EXPECTED);
  			else if (err->code == GOT_ERR_BAD_DELTA)
  				err = NULL;
  		} else {
  			if (err)
  				break;
  			if (result_len != dt->result_len) {
  				err = got_ferror(result_file,
  				    GOT_ERR_BAD_DELTA);
  				break;
  			}
  			n = fread(buf, result_len, 1, result_file);
  			if (n != 1 ||
  			    strncmp(buf, dt->expected, result_len) != 0) {
  				err = got_ferror(result_file,
  				    GOT_ERR_BAD_DELTA);
  				break;
  			}
  		}
  		rewind(result_file);
  	}
  
  	fclose(result_file);
  	return (err == NULL);
  }
  
  static int quiet;
  
  #define RUN_TEST(expr, name) \
  	{ test_ok = (expr);  \
  	if (!quiet) printf("test_%s %s\n", (name), test_ok ? "ok" : "failed"); \
  	failure = (failure || !test_ok); }
  
  static void
  usage(void)
  {
  	fprintf(stderr, "usage: delta_test [-q]\n");
  }
  
  int
  main(int argc, char *argv[])
  {
  	int test_ok;
  	int failure = 0;
  	int ch;
  
  	while ((ch = getopt(argc, argv, "q")) != -1) {
  		switch (ch) {
  		case 'q':
  			quiet = 1;
  			break;
  		default:
  			usage();
  			return 1;
  		}
  	}
  
  	argc -= optind;
  	argv += optind;
  
  	if (argc != 0) {
  		usage();
  		return 1;
  	}
  
  #ifndef PROFILE
  	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
  		err(1, "pledge");
  #endif
  	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
  		err(1, "unveil");
  
  	if (unveil(NULL, NULL) != 0)
  		err(1, "unveil");
  
  	RUN_TEST(delta_apply(), "delta_apply");
  
  	return failure ? 1 : 0;
  }
  

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