tor/src/or/test.c

/* Copyright 2001,2002,2003 Roger Dingledine. */
/* See LICENSE for licensing information */
/* $Id$ */

#include <stdio.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#ifdef MS_WINDOWS
/* For mkdir() */
#include <direct.h>
#endif
#include <dirent.h>
#include "or.h"
#include "../common/test.h"
#include "../common/torgzip.h"

extern or_options_t options;

int have_failed = 0;

/* These functions are file-local, but are exposed so we can test. */
void add_fingerprint_to_dir(const char *nickname, const char *fp);
void get_platform_str(char *platform, size_t len);
int is_obsolete_version(const char *myversion, const char *start);

static char temp_dir[256];

static void
setup_directory(void)
{
  static int is_setup = 0;
  int r;
  if (is_setup) return;

  tor_snprintf(temp_dir, sizeof(temp_dir), "/tmp/tor_test_%d", (int) getpid());
#ifdef MS_WINDOWS
  r = mkdir(temp_dir);
#else
  r = mkdir(temp_dir, 0700);
#endif
  if (r) {
    fprintf(stderr, "Can't create directory %s:", temp_dir);
    perror("");
    exit(1);
  }
  is_setup = 1;
}

static const char *
get_fname(const char *name)
{
  static char buf[1024];
  setup_directory();
  tor_snprintf(buf,sizeof(buf),"%s/%s",temp_dir,name);
  return buf;
}

static void
remove_directory(void)
{
  DIR *dirp;
  struct dirent *de;
  setup_directory();
  if (!(dirp = opendir(temp_dir))) {
    perror("Can't open temporary directory to remove files");
    return;
  }
  while ((de = readdir(dirp)) != NULL) {
    /* Only "." and ".." start with ., since we don't create any dotfiles. */
    if (de->d_name[0] == '.') continue;
    if (unlink(get_fname(de->d_name))) {
      perror("Error removing file");
    }
#if 0
    printf("==%s\n", de->d_name);
#endif
  }
  closedir(dirp);
  rmdir(temp_dir);
}

static void
test_buffers(void) {
#define MAX_BUF_SIZE 1024*1024
  char str[256];
  char str2[256];

  buf_t *buf;
  buf_t *buf2;

  int s, i, j, eof;

  /****
   * buf_new
   ****/
  if (!(buf = buf_new()))
    test_fail();

  test_eq(buf_capacity(buf), 512*1024);
  test_eq(buf_datalen(buf), 0);

  /****
   * read_to_buf
   ****/
  s = open(get_fname("data"), O_WRONLY|O_CREAT|O_TRUNC, 0600);
  for (j=0;j<256;++j) {
    str[j] = (char)j;
  }
  write(s, str, 256);
  close(s);

  s = open(get_fname("data"), O_RDONLY, 0);
  eof = 0;
  i = read_to_buf(s, 10, buf, &eof);
  test_eq(buf_capacity(buf), 512*1024);
  test_eq(buf_datalen(buf), 10);
  test_eq(eof, 0);
  test_eq(i, 10);
  test_memeq(str, (char*)_buf_peek_raw_buffer(buf), 10);

  /* Test reading 0 bytes. */
  i = read_to_buf(s, 0, buf, &eof);
  test_eq(buf_capacity(buf), 512*1024);
  test_eq(buf_datalen(buf), 10);
  test_eq(eof, 0);
  test_eq(i, 0);

  /* Now test when buffer is filled exactly. */
  buf2 = buf_new_with_capacity(6);
  i = read_to_buf(s, 6, buf2, &eof);
  test_eq(buf_capacity(buf2), 6);
  test_eq(buf_datalen(buf2), 6);
  test_eq(eof, 0);
  test_eq(i, 6);
  test_memeq(str+10, (char*)_buf_peek_raw_buffer(buf2), 6);
  buf_free(buf2);

  /* Now test when buffer is filled with more data to read. */
  buf2 = buf_new_with_capacity(32);
  i = read_to_buf(s, 128, buf2, &eof);
  test_eq(buf_capacity(buf2), 128);
  test_eq(buf_datalen(buf2), 32);
  test_eq(eof, 0);
  test_eq(i, 32);
  buf_free(buf2);

  /* Now read to eof. */
  test_assert(buf_capacity(buf) > 256);
  i = read_to_buf(s, 1024, buf, &eof);
  test_eq(i, (256-32-10-6));
  test_eq(buf_capacity(buf), MAX_BUF_SIZE);
  test_eq(buf_datalen(buf), 256-6-32);
  test_memeq(str, (char*)_buf_peek_raw_buffer(buf), 10); /* XXX Check rest. */
  test_eq(eof, 0);

  i = read_to_buf(s, 1024, buf, &eof);
  test_eq(i, 0);
  test_eq(buf_capacity(buf), MAX_BUF_SIZE);
  test_eq(buf_datalen(buf), 256-6-32);
  test_eq(eof, 1);

  close(s);

  /****
   * fetch_from_buf
   ****/
  memset(str2, 255, 256);
  test_eq(246, fetch_from_buf(str2, 10, buf));
  test_memeq(str2, str, 10);
  test_memeq(str+10,(char*)_buf_peek_raw_buffer(buf),246);
  test_eq(buf_datalen(buf),246);

  test_eq(0, fetch_from_buf(str2, 246, buf));
  test_memeq(str2, str+10, 246);
  test_eq(buf_capacity(buf),MAX_BUF_SIZE);
  test_eq(buf_datalen(buf),0);

  /****
   * write_to_buf
   ****/
  memset((char *)_buf_peek_raw_buffer(buf), (int)'-', 256);
  i = write_to_buf("Hello world", 11, buf);
  test_eq(i, 11);
  test_eq(buf_datalen(buf), 11);
  test_memeq((char*)_buf_peek_raw_buffer(buf), "Hello world", 11);
  i = write_to_buf("XYZZY", 5, buf);
  test_eq(i, 16);
  test_eq(buf_datalen(buf), 16);
  test_memeq((char*)_buf_peek_raw_buffer(buf), "Hello worldXYZZY", 16);
  /* Test when buffer is overfull. */
#if 0
  buflen = 18;
  test_eq(-1, write_to_buf("This string will not fit.", 25,
                           &buf, &buflen, &buf_datalen));
  test_eq(buf_datalen, 16);
  test_memeq(buf, "Hello worldXYZZY--", 18);
  buflen = MAX_BUF_SIZE;
#endif

  /****
   * flush_buf
   ****/
  /* XXXX Needs tests. */

  buf_free(buf);
}

static void
test_crypto_dh(void)
{
  crypto_dh_env_t *dh1, *dh2;
  char p1[DH_BYTES];
  char p2[DH_BYTES];
  char s1[DH_BYTES];
  char s2[DH_BYTES];
  int s1len, s2len;

  dh1 = crypto_dh_new();
  dh2 = crypto_dh_new();
  test_eq(crypto_dh_get_bytes(dh1), DH_BYTES);
  test_eq(crypto_dh_get_bytes(dh2), DH_BYTES);

  memset(p1, 0, DH_BYTES);
  memset(p2, 0, DH_BYTES);
  test_memeq(p1, p2, DH_BYTES);
  test_assert(! crypto_dh_get_public(dh1, p1, DH_BYTES));
  test_memneq(p1, p2, DH_BYTES);
  test_assert(! crypto_dh_get_public(dh2, p2, DH_BYTES));
  test_memneq(p1, p2, DH_BYTES);

  memset(s1, 0, DH_BYTES);
  memset(s2, 0xFF, DH_BYTES);
  s1len = crypto_dh_compute_secret(dh1, p2, DH_BYTES, s1, 50);
  s2len = crypto_dh_compute_secret(dh2, p1, DH_BYTES, s2, 50);
  test_assert(s1len > 0);
  test_eq(s1len, s2len);
  test_memeq(s1, s2, s1len);

  crypto_dh_free(dh1);
  crypto_dh_free(dh2);
}

static void
test_crypto(void)
{
  crypto_cipher_env_t *env1, *env2;
  crypto_pk_env_t *pk1, *pk2;
  char *data1, *data2, *data3, *cp;
  int i, j, p, len;
  size_t size;

  data1 = tor_malloc(1024);
  data2 = tor_malloc(1024);
  data3 = tor_malloc(1024);
  test_assert(data1 && data2 && data3);

  /* Try out RNG. */
  test_assert(! crypto_seed_rng());
  crypto_rand(data1, 100);
  crypto_rand(data2, 100);
  test_memneq(data1,data2,100);

#if 0
  /* Try out identity ciphers. */
  env1 = crypto_new_cipher_env(CRYPTO_CIPHER_IDENTITY);
  test_neq(env1, 0);
  test_eq(crypto_cipher_generate_key(env1), 0);
  test_eq(crypto_cipher_encrypt_init_cipher(env1), 0);
  for(i = 0; i < 1024; ++i) {
    data1[i] = (char) i*73;
  }
  crypto_cipher_encrypt(env1, data2, data1, 1024);
  test_memeq(data1, data2, 1024);
  crypto_free_cipher_env(env1);
#endif

  /* Now, test encryption and decryption with stream cipher. */
  data1[0]='\0';
  for(i = 1023; i>0; i -= 35)
    strncat(data1, "Now is the time for all good onions", i);

  memset(data2, 0, 1024);
  memset(data3, 0, 1024);
  env1 = crypto_new_cipher_env();
  test_neq(env1, 0);
  env2 = crypto_new_cipher_env();
  test_neq(env2, 0);
  j = crypto_cipher_generate_key(env1);
  crypto_cipher_set_key(env2, crypto_cipher_get_key(env1));
  crypto_cipher_encrypt_init_cipher(env1);
  crypto_cipher_decrypt_init_cipher(env2);

  /* Try encrypting 512 chars. */
  crypto_cipher_encrypt(env1, data2, data1, 512);
  crypto_cipher_decrypt(env2, data3, data2, 512);
  test_memeq(data1, data3, 512);
  test_memneq(data1, data2, 512);

  /* Now encrypt 1 at a time, and get 1 at a time. */
  for (j = 512; j < 560; ++j) {
    crypto_cipher_encrypt(env1, data2+j, data1+j, 1);
  }
  for (j = 512; j < 560; ++j) {
    crypto_cipher_decrypt(env2, data3+j, data2+j, 1);
  }
  test_memeq(data1, data3, 560);
  /* Now encrypt 3 at a time, and get 5 at a time. */
  for (j = 560; j < 1024-5; j += 3) {
    crypto_cipher_encrypt(env1, data2+j, data1+j, 3);
  }
  for (j = 560; j < 1024-5; j += 5) {
    crypto_cipher_decrypt(env2, data3+j, data2+j, 5);
  }
  test_memeq(data1, data3, 1024-5);
  /* Now make sure that when we encrypt with different chunk sizes, we get
     the same results. */
  crypto_free_cipher_env(env2);

  memset(data3, 0, 1024);
  env2 = crypto_new_cipher_env();
  test_neq(env2, 0);
  crypto_cipher_set_key(env2, crypto_cipher_get_key(env1));
  crypto_cipher_encrypt_init_cipher(env2);
  for (j = 0; j < 1024-16; j += 17) {
    crypto_cipher_encrypt(env2, data3+j, data1+j, 17);
  }
  for (j= 0; j < 1024-16; ++j) {
    if (data2[j] != data3[j]) {
      printf("%d:  %d\t%d\n", j, (int) data2[j], (int) data3[j]);
    }
  }
  test_memeq(data2, data3, 1024-16);
  crypto_free_cipher_env(env1);
  crypto_free_cipher_env(env2);

  /* Test vectors for stream ciphers. */
  /* XXXX Look up some test vectors for the ciphers and make sure we match. */

  /* Test SHA-1 with a test vector from the specification. */
  i = crypto_digest(data1, "abc", 3);
  test_memeq(data1,
             "\xA9\x99\x3E\x36\x47\x06\x81\x6A\xBA\x3E\x25\x71\x78"
             "\x50\xC2\x6C\x9C\xD0\xD8\x9D", 20);

  /* Public-key ciphers */
  pk1 = crypto_new_pk_env();
  pk2 = crypto_new_pk_env();
  test_assert(pk1 && pk2);
  test_assert(! crypto_pk_generate_key(pk1));
  test_assert(! crypto_pk_write_public_key_to_string(pk1, &cp, &size));
  test_assert(! crypto_pk_read_public_key_from_string(pk2, cp, size));
  test_eq(0, crypto_pk_cmp_keys(pk1, pk2));
  tor_free(cp);

  /* Check DER encoding */
  i=crypto_pk_DER64_encode_public_key(pk1, &cp);
  test_assert(i>0);
  test_assert(cp);
  test_assert(!strchr(cp, ' '));
  test_assert(!strchr(cp, '\n'));
  test_eq(0, crypto_pk_cmp_keys(pk1, pk1));
  crypto_free_pk_env(pk2);
  pk2 = crypto_pk_DER64_decode_public_key(cp);
  test_assert(pk2);
  test_eq(0, crypto_pk_cmp_keys(pk1, pk2));
  tor_free(cp);

  test_eq(128, crypto_pk_keysize(pk1));
  test_eq(128, crypto_pk_keysize(pk2));

  test_eq(128, crypto_pk_public_encrypt(pk2, data1, "Hello whirled.", 15,
                                        PK_PKCS1_OAEP_PADDING));
  test_eq(128, crypto_pk_public_encrypt(pk1, data2, "Hello whirled.", 15,
                                        PK_PKCS1_OAEP_PADDING));
  /* oaep padding should make encryption not match */
  test_memneq(data1, data2, 128);
  test_eq(15, crypto_pk_private_decrypt(pk1, data3, data1, 128,
                                        PK_PKCS1_OAEP_PADDING,1));
  test_streq(data3, "Hello whirled.");
  memset(data3, 0, 1024);
  test_eq(15, crypto_pk_private_decrypt(pk1, data3, data2, 128,
                                        PK_PKCS1_OAEP_PADDING,1));
  test_streq(data3, "Hello whirled.");
  /* Can't decrypt with public key. */
  test_eq(-1, crypto_pk_private_decrypt(pk2, data3, data2, 128,
                                        PK_PKCS1_OAEP_PADDING,1));
  /* Try again with bad padding */
  memcpy(data2+1, "XYZZY", 5);  /* This has fails ~ once-in-2^40 */
  test_eq(-1, crypto_pk_private_decrypt(pk1, data3, data2, 128,
                                        PK_PKCS1_OAEP_PADDING,1));

  /* File operations: save and load private key */
  test_assert(! crypto_pk_write_private_key_to_filename(pk1,
                                                        get_fname("pkey1")));

  test_assert(! crypto_pk_read_private_key_from_filename(pk2,
                                                         get_fname("pkey1")));
  test_eq(15, crypto_pk_private_decrypt(pk2, data3, data1, 128,
                                        PK_PKCS1_OAEP_PADDING,1));

  /* Now try signing. */
  strcpy(data1, "Ossifrage");
  test_eq(128, crypto_pk_private_sign(pk1, data2, data1, 10));
  test_eq(10, crypto_pk_public_checksig(pk1, data3, data2, 128));
  test_streq(data3, "Ossifrage");
  /* Try signing digests. */
  test_eq(128, crypto_pk_private_sign_digest(pk1, data2, data1, 10));
  test_eq(20, crypto_pk_public_checksig(pk1, data3, data2, 128));
  test_eq(0, crypto_pk_public_checksig_digest(pk1, data1, 10, data2, 128));
  test_eq(-1, crypto_pk_public_checksig_digest(pk1, data1, 11, data2, 128));
  /*XXXX test failed signing*/

  /* Try encoding */
  crypto_free_pk_env(pk2);
  pk2 = NULL;
  i = crypto_pk_asn1_encode(pk1, data1, 1024);
  test_assert(i>0);
  pk2 = crypto_pk_asn1_decode(data1, i);
  test_assert(crypto_pk_cmp_keys(pk1,pk2) == 0);

  /* Try with hybrid encryption wrappers. */
  crypto_rand(data1, 1024);
  for (i = 0; i < 3; ++i) {
    for (j = 85; j < 140; ++j) {
      memset(data2,0,1024);
      memset(data3,0,1024);
      if (i == 0 && j < 129)
        continue;
      p = (i==0)?PK_NO_PADDING:
        (i==1)?PK_PKCS1_PADDING:PK_PKCS1_OAEP_PADDING;
      len = crypto_pk_public_hybrid_encrypt(pk1,data2,data1,j,p,0);
      test_assert(len>=0);
      len = crypto_pk_private_hybrid_decrypt(pk1,data3,data2,len,p,1);
      test_eq(len,j);
      test_memeq(data1,data3,j);
    }
  }
  crypto_free_pk_env(pk1);
  crypto_free_pk_env(pk2);

  /* Base64 tests */
  strcpy(data1, "Test string that contains 35 chars.");
  strcat(data1, " 2nd string that contains 35 chars.");

  i = base64_encode(data2, 1024, data1, 71);
  j = base64_decode(data3, 1024, data2, i);
  test_streq(data3, data1);
  test_eq(j, 71);
  test_assert(data2[i] == '\0');

  /* Base32 tests */
  strcpy(data1, "5chrs");
  /* bit pattern is:  [35 63 68 72 73] ->
   *        [00110101 01100011 01101000 01110010 01110011]
   * By 5s: [00110 10101 10001 10110 10000 11100 10011 10011]
   */
  base32_encode(data2, 9, data1, 5);
  test_streq(data2, "gvrwq4tt");

  strcpy(data1, "\xFF\xF5\x6D\x44\xAE\x0D\x5C\xC9\x62\xC4");
  base32_encode(data2, 30, data1, 10);
  test_streq(data2, "772w2rfobvomsywe");

  /* Base16 tests */
  strcpy(data1, "6chrs\xff");
  base16_encode(data2, 13, data1, 6);
  test_streq(data2, "3663687273FF");

  strcpy(data1, "f0d678affc000100");
  i = base16_decode(data2, 8, data1, 16);
  test_eq(i,0);
  test_memeq(data2, "\xf0\xd6\x78\xaf\xfc\x00\x01\x00",8);

  free(data1);
  free(data2);
  free(data3);
}

static void
test_util(void) {
  struct timeval start, end;
  struct tm a_time;
  smartlist_t *sl;
  char timestr[RFC1123_TIME_LEN+1];
  char buf[1024];
  time_t t_res;
  int i;
  uint32_t u32;
  uint16_t u16;
  char *cp;

  start.tv_sec = 5;
  start.tv_usec = 5000;

  end.tv_sec = 5;
  end.tv_usec = 5000;

  test_eq(0L, tv_udiff(&start, &end));

  end.tv_usec = 7000;

  test_eq(2000L, tv_udiff(&start, &end));

  end.tv_sec = 6;

  test_eq(1002000L, tv_udiff(&start, &end));

  end.tv_usec = 0;

  test_eq(995000L, tv_udiff(&start, &end));

  end.tv_sec = 4;

  test_eq(0L, tv_udiff(&start, &end));

  /* The test values here are confirmed to be correct on a platform
   * with a working timegm. */
  a_time.tm_year = 2003-1900;
  a_time.tm_mon = 7;
  a_time.tm_mday = 30;
  a_time.tm_hour = 6;
  a_time.tm_min = 14;
  a_time.tm_sec = 55;
  test_eq((time_t) 1062224095UL, tor_timegm(&a_time));
  a_time.tm_year = 2004-1900; /* Try a leap year, after feb. */
  test_eq((time_t) 1093846495UL, tor_timegm(&a_time));
  a_time.tm_mon = 1;          /* Try a leap year, in feb. */
  a_time.tm_mday = 10;
  test_eq((time_t) 1076393695UL, tor_timegm(&a_time));

  format_rfc1123_time(timestr, 0);
  test_streq("Thu, 01 Jan 1970 00:00:00 GMT", timestr);
  format_rfc1123_time(timestr, (time_t)1091580502UL);
  test_streq("Wed, 04 Aug 2004 00:48:22 GMT", timestr);

  t_res = 0;
  i = parse_rfc1123_time(timestr, &t_res);
  test_eq(i,0);
  test_eq(t_res, (time_t)1091580502UL);

  /* Test smartlist */
  sl = smartlist_create();
  smartlist_add(sl, (void*)1);
  smartlist_add(sl, (void*)2);
  smartlist_add(sl, (void*)3);
  smartlist_add(sl, (void*)4);
  test_eq((void*)2, smartlist_del_keeporder(sl, 1));
  smartlist_insert(sl, 1, (void*)22);
  smartlist_insert(sl, 0, (void*)0);
  smartlist_insert(sl, 5, (void*)555);
  test_eq((void*)0,   smartlist_get(sl,0));
  test_eq((void*)1,   smartlist_get(sl,1));
  test_eq((void*)22,  smartlist_get(sl,2));
  test_eq((void*)3,   smartlist_get(sl,3));
  test_eq((void*)4,   smartlist_get(sl,4));
  test_eq((void*)555, smartlist_get(sl,5));

  smartlist_clear(sl);
  smartlist_split_string(sl, "abc", ":", 0, 0);
  test_eq(1, smartlist_len(sl));
  test_streq("abc", smartlist_get(sl, 0));
  smartlist_split_string(sl, "a::bc::", "::", 0, 0);
  test_eq(4, smartlist_len(sl));
  test_streq("a", smartlist_get(sl, 1));
  test_streq("bc", smartlist_get(sl, 2));
  test_streq("", smartlist_get(sl, 3));
  cp = smartlist_join_strings(sl, "", 0, NULL);
  test_streq(cp, "abcabc");
  tor_free(cp);
  cp = smartlist_join_strings(sl, "!", 0, NULL);
  test_streq(cp, "abc!a!bc!");
  tor_free(cp);
  cp = smartlist_join_strings(sl, "XY", 0, NULL);
  test_streq(cp, "abcXYaXYbcXY");
  tor_free(cp);
  cp = smartlist_join_strings(sl, "XY", 1, NULL);
  test_streq(cp, "abcXYaXYbcXYXY");
  tor_free(cp);
  cp = smartlist_join_strings(sl, "", 1, NULL);
  test_streq(cp, "abcabc");
  tor_free(cp);

  smartlist_split_string(sl, "/def/  /ghijk", "/", 0, 0);
  test_eq(8, smartlist_len(sl));
  test_streq("", smartlist_get(sl, 4));
  test_streq("def", smartlist_get(sl, 5));
  test_streq("  ", smartlist_get(sl, 6));
  test_streq("ghijk", smartlist_get(sl, 7));
  SMARTLIST_FOREACH(sl, char *, cp, tor_free(cp));
  smartlist_clear(sl);

  smartlist_split_string(sl, "a,bbd,cdef", ",", SPLIT_SKIP_SPACE, 0);
  test_eq(3, smartlist_len(sl));
  test_streq("a", smartlist_get(sl,0));
  test_streq("bbd", smartlist_get(sl,1));
  test_streq("cdef", smartlist_get(sl,2));
  smartlist_split_string(sl, " z <> zhasd <>  <> bnud<>   ", "<>", SPLIT_SKIP_SPACE, 0);
  test_eq(8, smartlist_len(sl));
  test_streq("z", smartlist_get(sl,3));
  test_streq("zhasd", smartlist_get(sl,4));
  test_streq("", smartlist_get(sl,5));
  test_streq("bnud", smartlist_get(sl,6));
  test_streq("", smartlist_get(sl,7));

  SMARTLIST_FOREACH(sl, char *, cp, tor_free(cp));
  smartlist_clear(sl);

  smartlist_split_string(sl, " z <> zhasd <>  <> bnud<>   ", "<>", SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
  test_eq(3, smartlist_len(sl));
  test_streq("z", smartlist_get(sl, 0));
  test_streq("zhasd", smartlist_get(sl, 1));
  test_streq("bnud", smartlist_get(sl, 2));
  smartlist_split_string(sl, " z <> zhasd <>  <> bnud<>   ", "<>", SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 2);
  test_eq(5, smartlist_len(sl));
  test_streq("z", smartlist_get(sl, 3));
  test_streq("zhasd <>  <> bnud<>", smartlist_get(sl, 4));
  SMARTLIST_FOREACH(sl, char *, cp, tor_free(cp));
  smartlist_clear(sl);
  

  /* Test tor_strstrip() */
  strcpy(buf, "Testing 1 2 3");
  test_eq(0, tor_strstrip(buf, ",!"));
  test_streq(buf, "Testing 1 2 3");
  strcpy(buf, "!Testing 1 2 3?");
  test_eq(5, tor_strstrip(buf, "!? "));
  test_streq(buf, "Testing123");

  /* Test tor_strpartition() */
  test_assert(! tor_strpartition(buf, sizeof(buf), "abcdefg", "##", 3,
                                 TERMINATE_IF_EVEN));
  test_streq(buf, "abc##def##g");
  test_assert(! tor_strpartition(buf, sizeof(buf), "abcdefg", "##", 3,
                                 ALWAYS_TERMINATE));
  test_streq(buf, "abc##def##g##");
  test_assert(! tor_strpartition(buf, sizeof(buf), "abcdefghi", "##", 3,
                                 TERMINATE_IF_EVEN));
  test_streq(buf, "abc##def##ghi##");
  test_assert(! tor_strpartition(buf, sizeof(buf), "abcdefghi", "##", 3,
                                 NEVER_TERMINATE));
  test_streq(buf, "abc##def##ghi");

  /* Test parse_addr_port */
  cp = NULL; u32 = 3; u16 = 3;
  test_assert(!parse_addr_port("1.2.3.4", &cp, &u32, &u16));
  test_streq(cp, "1.2.3.4");
  test_eq(u32, 0x01020304u);
  test_eq(u16, 0);
  tor_free(cp);
  test_assert(!parse_addr_port("4.3.2.1:99", &cp, &u32, &u16));
  test_streq(cp, "4.3.2.1");
  test_eq(u32, 0x04030201u);
  test_eq(u16, 99);
  tor_free(cp);
  test_assert(!parse_addr_port("nonexistent.address:4040", &cp, NULL, &u16));
  test_streq(cp, "nonexistent.address");
  test_eq(u16, 4040);
  tor_free(cp);
  test_assert(!parse_addr_port("localhost:9999", &cp, &u32, &u16));
  test_streq(cp, "localhost");
  test_eq(u32, 0x7f000001u);
  test_eq(u16, 9999);
  tor_free(cp);
  u32 = 3;
  test_assert(!parse_addr_port("localhost", NULL, &u32, &u16));
  test_eq(cp, NULL);
  test_eq(u32, 0x7f000001u);
  test_eq(u16, 0);
  tor_free(cp);

  /* Test tor_parse_long. */
  test_eq(10L, tor_parse_long("10",10,0,100,NULL,NULL));
  test_eq(0L, tor_parse_long("10",10,50,100,NULL,NULL));

  /* XXXX test older functions. */
  smartlist_free(sl);
}

static void
test_gzip(void)
{
  char *buf1, *buf2=NULL, *buf3=NULL;
  size_t len1, len2;

  buf1 = tor_strdup("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
  if (is_gzip_supported()) {
    test_assert(!tor_gzip_compress(&buf2, &len1, buf1, strlen(buf1)+1,
                                   GZIP_METHOD));
    test_assert(buf2);
    test_assert(!memcmp(buf2, "\037\213", 2)); /* Gzip magic. */

    test_assert(!tor_gzip_uncompress(&buf3, &len2, buf2, len1, GZIP_METHOD));
    test_assert(buf3);
    test_streq(buf1,buf3);

    tor_free(buf2);
    tor_free(buf3);
  }

  test_assert(!tor_gzip_compress(&buf2, &len1, buf1, strlen(buf1)+1,
                                 ZLIB_METHOD));
  test_assert(buf2);
  test_assert(!memcmp(buf2, "\x78\xDA", 2)); /* deflate magic. */

  test_assert(!tor_gzip_uncompress(&buf3, &len2, buf2, len1, ZLIB_METHOD));
  test_assert(buf3);
  test_streq(buf1,buf3);

  tor_free(buf2);
  tor_free(buf3);
  tor_free(buf1);
}

static void * 
_squareAndRemoveK4(const char *key, void*val, void *data)
{
  int *ip = (int*)data;
  intptr_t v;
  if (strcmp(key,"K4") == 0) {
    ++(*ip);
    return NULL;
  }
  v = (intptr_t)val;
  return (void*)(v*v);
}

static void
test_strmap(void)
{
  strmap_t *map;
  strmap_iter_t *iter;
  const char *k;
  void *v;
  int count;

  map = strmap_new();
  v = strmap_set(map, "K1", (void*)99);
  test_eq(v, NULL);
  v = strmap_set(map, "K2", (void*)101);
  test_eq(v, NULL);
  v = strmap_set(map, "K1", (void*)100);
  test_eq(v, (void*)99);
  test_eq(strmap_get(map,"K1"), (void*)100);
  test_eq(strmap_get(map,"K2"), (void*)101);
  test_eq(strmap_get(map,"K-not-there"), NULL);

  v = strmap_remove(map,"K2");
  test_eq(v, (void*)101);
  test_eq(strmap_get(map,"K2"), NULL);
  test_eq(strmap_remove(map,"K2"), NULL);

  strmap_set(map, "K2", (void*)101);
  strmap_set(map, "K3", (void*)102);
  strmap_set(map, "K4", (void*)103);
  strmap_set(map, "K5", (void*)104);
  strmap_set(map, "K6", (void*)105);

  count = 0;
  strmap_foreach(map, _squareAndRemoveK4, &count);
  test_eq(count, 1);
  test_eq(strmap_get(map, "K4"), NULL);
  test_eq(strmap_get(map, "K1"), (void*)10000);
  test_eq(strmap_get(map, "K6"), (void*)11025);

  iter = strmap_iter_init(map);
  strmap_iter_get(iter,&k,&v);
  test_streq(k, "K1");
  test_eq(v, (void*)10000);
  iter = strmap_iter_next(map,iter);
  strmap_iter_get(iter,&k,&v);
  test_streq(k, "K2");
  test_eq(v, (void*)10201);
  iter = strmap_iter_next_rmv(map,iter);
  strmap_iter_get(iter,&k,&v);
  test_streq(k, "K3");
  test_eq(v, (void*)10404);
  iter = strmap_iter_next(map,iter); /* K5 */
  test_assert(!strmap_iter_done(iter));
  iter = strmap_iter_next(map,iter); /* K6 */
  test_assert(!strmap_iter_done(iter));
  iter = strmap_iter_next(map,iter); /* done */
  test_assert(strmap_iter_done(iter));

  /* Make sure we removed K2, but not the others. */
  test_eq(strmap_get(map, "K2"), NULL);
  test_eq(strmap_get(map, "K5"), (void*)10816);

  /* Clean up after ourselves. */
  strmap_free(map, NULL);

  /* Now try some lc functions. */
  map = strmap_new();
  strmap_set_lc(map,"Ab.C", (void*)1);
  test_eq(strmap_get(map,"ab.c"), (void*)1);
  test_eq(strmap_get_lc(map,"AB.C"), (void*)1);
  test_eq(strmap_get(map,"AB.C"), NULL);
  test_eq(strmap_remove_lc(map,"aB.C"), (void*)1);
  test_eq(strmap_get_lc(map,"AB.C"), NULL);
  strmap_free(map,NULL);
}

static void 
test_onion(void)
{
#if 0
  char **names;
  int i,num;

  names = parse_nickname_list("  foo bar\t baz quux  ", &num);
  test_eq(num,4);
  test_streq(names[0],"foo");
  test_streq(names[1],"bar");
  test_streq(names[2],"baz");
  test_streq(names[3],"quux");
  for(i=0;i<num;i++)
    tor_free(names[i]);
  tor_free(names);
#endif
}

static void
test_onion_handshake(void)
{
  /* client-side */
  crypto_dh_env_t *c_dh = NULL;
  char c_buf[ONIONSKIN_CHALLENGE_LEN];
  char c_keys[40];

  /* server-side */
  char s_buf[ONIONSKIN_REPLY_LEN];
  char s_keys[40];

  /* shared */
  crypto_pk_env_t *pk = NULL;

  pk = crypto_new_pk_env();
  test_assert(! crypto_pk_generate_key(pk));

  /* client handshake 1. */
  memset(c_buf, 0, ONIONSKIN_CHALLENGE_LEN);
  test_assert(! onion_skin_create(pk, &c_dh, c_buf));

  /* server handshake */
  memset(s_buf, 0, ONIONSKIN_REPLY_LEN);
  memset(s_keys, 0, 40);
  test_assert(! onion_skin_server_handshake(c_buf, pk, NULL, s_buf, s_keys, 40));

  /* client handshake 2 */
  memset(c_keys, 0, 40);
  test_assert(! onion_skin_client_handshake(c_dh, s_buf, c_keys, 40));

  crypto_dh_free(c_dh);

  if (memcmp(c_keys, s_keys, 40)) {
    puts("Aiiiie");
    exit(1);
  }
  test_memeq(c_keys, s_keys, 40);
  memset(s_buf, 0, 40);
  test_memneq(c_keys, s_buf, 40);
  crypto_free_pk_env(pk);
}


static void
test_dir_format(void)
{
  char buf[8192], buf2[8192];
  char platform[256];
  char fingerprint[FINGERPRINT_LEN+1];
  char *pk1_str = NULL, *pk2_str = NULL, *pk3_str = NULL, *cp;
  size_t pk1_str_len, pk2_str_len, pk3_str_len;
  routerinfo_t r1, r2;
  crypto_pk_env_t *pk1 = NULL, *pk2 = NULL, *pk3 = NULL;
  routerinfo_t *rp1 = NULL, *rp2 = NULL;
  struct exit_policy_t ex1, ex2;
  routerlist_t *dir1 = NULL, *dir2 = NULL;
  tor_version_t ver1;
  char *bw_lines = NULL;

  test_assert( (pk1 = crypto_new_pk_env()) );
  test_assert( (pk2 = crypto_new_pk_env()) );
  test_assert( (pk3 = crypto_new_pk_env()) );
  test_assert(! crypto_pk_generate_key(pk1));
  test_assert(! crypto_pk_generate_key(pk2));
  test_assert(! crypto_pk_generate_key(pk3));

  test_assert( is_legal_nickname("a"));
  test_assert(!is_legal_nickname(""));
  test_assert(!is_legal_nickname("abcdefghijklmnopqrst")); /* 20 chars */
  test_assert(!is_legal_nickname("abcdefghijklmnopqrst")); /* 20 chars */
  test_assert(!is_legal_nickname("hyphen-")); /* bad char */
  test_assert( is_legal_nickname("abcdefghijklmnopqrs")); /* 19 chars */
  test_assert(!is_legal_nickname("$AAAAAAAA01234AAAAAAAAAAAAAAAAAAAAAAAAAAA"));
  /* valid */
  test_assert( is_legal_nickname_or_hexdigest(
                                 "$AAAAAAAA01234AAAAAAAAAAAAAAAAAAAAAAAAAAA"));
  /* too short */
  test_assert(!is_legal_nickname_or_hexdigest(
                                 "$AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"));
  /* illegal char */
  test_assert(!is_legal_nickname_or_hexdigest(
                                 "$AAAAAAzAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"));
  test_assert(is_legal_nickname_or_hexdigest("xyzzy"));
  test_assert(is_legal_nickname_or_hexdigest("abcdefghijklmnopqrs"));
  test_assert(!is_legal_nickname_or_hexdigest("abcdefghijklmnopqrst"));

  get_platform_str(platform, sizeof(platform));
  memset(&r1,0,sizeof(r1));
  memset(&r2,0,sizeof(r2));
  r1.address = tor_strdup("testaddr1.foo.bar");
  r1.addr = 0xc0a80001u; /* 192.168.0.1 */
  r1.published_on = 0;
  r1.or_port = 9000;
  r1.socks_port = 9002;
  r1.dir_port = 9003;
  r1.onion_pkey = pk1;
  r1.identity_pkey = pk2;
  r1.bandwidthrate = 1000;
  r1.bandwidthburst = 5000;
  r1.bandwidthcapacity = 10000;
  r1.exit_policy = NULL;
  r1.nickname = tor_strdup("Magri");
  r1.platform = tor_strdup(platform);

  ex1.policy_type = EXIT_POLICY_ACCEPT;
  ex1.string = NULL;
  ex1.addr = 0;
  ex1.msk = 0;
  ex1.prt_min = ex1.prt_max = 80;
  ex1.next = &ex2;
  ex2.policy_type = EXIT_POLICY_REJECT;
  ex2.addr = 18 << 24;
  ex2.msk = 0xFF000000u;
  ex2.prt_min = ex2.prt_max = 24;
  ex2.next = NULL;
  r2.address = tor_strdup("tor.tor.tor");
  r2.addr = 0x0a030201u; /* 10.3.2.1 */
  r2.platform = tor_strdup(platform);
  r2.published_on = 5;
  r2.or_port = 9005;
  r2.socks_port = 0;
  r2.dir_port = 0;
  r2.onion_pkey = pk2;
  r2.identity_pkey = pk1;
  r2.bandwidthrate = r2.bandwidthburst = r2.bandwidthcapacity = 3000;
  r2.exit_policy = &ex1;
  r2.nickname = tor_strdup("Fred");

  bw_lines = rep_hist_get_bandwidth_lines();
  test_assert(bw_lines);
  test_assert(!strcmpstart(bw_lines, "opt write-history "));

  test_assert(!crypto_pk_write_public_key_to_string(pk1, &pk1_str,
                                                    &pk1_str_len));
  test_assert(!crypto_pk_write_public_key_to_string(pk2 , &pk2_str,
                                                    &pk2_str_len));
  test_assert(!crypto_pk_write_public_key_to_string(pk3 , &pk3_str,
                                                    &pk3_str_len));

  memset(buf, 0, 2048);
  test_assert(router_dump_router_to_string(buf, 2048, &r1, pk2)>0);

  strcpy(buf2, "router Magri testaddr1.foo.bar 9000 9002 9003\n"
         "platform Tor "VERSION" on ");
  strcat(buf2, get_uname());
  strcat(buf2, "\n"
         "published 1970-01-01 00:00:00\n"
         "opt fingerprint ");
  test_assert(!crypto_pk_get_fingerprint(pk2, fingerprint, 1));
  strcat(buf2, fingerprint);
  strcat(buf2, "\nopt uptime 0\n"
  /* XXX the "0" above is hardcoded, but even if we made it reflect
   * uptime, that still wouldn't make it right, because the two
   * descriptors might be made on different seconds... hm. */
         "bandwidth 1000 5000 10000\n"
         "onion-key\n");
  strcat(buf2, pk1_str);
  strcat(buf2, "signing-key\n");
  strcat(buf2, pk2_str);
  strcat(buf2, bw_lines);
  strcat(buf2, "router-signature\n");
  buf[strlen(buf2)] = '\0'; /* Don't compare the sig; it's never the same twice*/

  test_streq(buf, buf2);
  tor_free(bw_lines);

  test_assert(router_dump_router_to_string(buf, 2048, &r1, pk2)>0);
  cp = buf;
  rp1 = router_parse_entry_from_string((const char*)cp,NULL);
  test_assert(rp1);
  test_streq(rp1->address, r1.address);
  test_eq(rp1->or_port, r1.or_port);
  test_eq(rp1->socks_port, r1.socks_port);
  test_eq(rp1->dir_port, r1.dir_port);
  test_eq(rp1->bandwidthrate, r1.bandwidthrate);
  test_eq(rp1->bandwidthburst, r1.bandwidthburst);
  test_eq(rp1->bandwidthcapacity, r1.bandwidthcapacity);
  test_assert(crypto_pk_cmp_keys(rp1->onion_pkey, pk1) == 0);
  test_assert(crypto_pk_cmp_keys(rp1->identity_pkey, pk2) == 0);
  test_assert(rp1->exit_policy == NULL);

#if 0
  /* XXX Once we have exit policies, test this again. XXX */
  strcpy(buf2, "router tor.tor.tor 9005 0 0 3000\n");
  strcat(buf2, pk2_str);
  strcat(buf2, "signing-key\n");
  strcat(buf2, pk1_str);
  strcat(buf2, "accept *:80\nreject 18.*:24\n\n");
  test_assert(router_dump_router_to_string(buf, 2048, &r2, pk2)>0);
  test_streq(buf, buf2);

  cp = buf;
  rp2 = router_parse_entry_from_string(&cp);
  test_assert(rp2);
  test_streq(rp2->address, r2.address);
  test_eq(rp2->or_port, r2.or_port);
  test_eq(rp2->socks_port, r2.socks_port);
  test_eq(rp2->dir_port, r2.dir_port);
  test_eq(rp2->bandwidth, r2.bandwidth);
  test_assert(crypto_pk_cmp_keys(rp2->onion_pkey, pk2) == 0);
  test_assert(crypto_pk_cmp_keys(rp2->identity_pkey, pk1) == 0);
  test_eq(rp2->exit_policy->policy_type, EXIT_POLICY_ACCEPT);
  test_streq(rp2->exit_policy->string, "accept *:80");
  test_streq(rp2->exit_policy->address, "*");
  test_streq(rp2->exit_policy->port, "80");
  test_eq(rp2->exit_policy->next->policy_type, EXIT_POLICY_REJECT);
  test_streq(rp2->exit_policy->next->string, "reject 18.*:24");
  test_streq(rp2->exit_policy->next->address, "18.*");
  test_streq(rp2->exit_policy->next->port, "24");
  test_assert(rp2->exit_policy->next->next == NULL);
#endif

  /* Okay, now for the directories. */
  crypto_pk_get_fingerprint(pk2, buf, 1);
  add_fingerprint_to_dir("Magri", buf);
  crypto_pk_get_fingerprint(pk1, buf, 1);
  add_fingerprint_to_dir("Fred", buf);
  /* Make sure routers aren't too far in the past any more. */
  r1.published_on = time(NULL);
  r2.published_on = time(NULL)-3*60*60;
  test_assert(router_dump_router_to_string(buf, 2048, &r1, pk2)>0);
  cp = buf;
  test_eq(dirserv_add_descriptor((const char**)&cp), 1);
  test_assert(router_dump_router_to_string(buf, 2048, &r2, pk1)>0);
  cp = buf;
  test_eq(dirserv_add_descriptor((const char**)&cp), 1);
  options.Nickname = tor_strdup("DirServer");
  test_assert(!dirserv_dump_directory_to_string(buf,8192,pk3));
  cp = buf;
  test_assert(!router_parse_routerlist_from_directory(buf, &dir1, pk3, 1));
  test_eq(2, smartlist_len(dir1->routers));
  dirserv_free_fingerprint_list();

  tor_free(pk1_str);
  tor_free(pk2_str);
  if (pk1) crypto_free_pk_env(pk1);
  if (pk2) crypto_free_pk_env(pk2);
  if (rp1) routerinfo_free(rp1);
  if (rp2) routerinfo_free(rp2);
  tor_free(dir1); /* XXXX And more !*/
  tor_free(dir2); /* And more !*/

  /* Try out version parsing functionality */
  test_eq(0, tor_version_parse("0.3.4pre2-cvs", &ver1));
  test_eq(0, ver1.major);
  test_eq(3, ver1.minor);
  test_eq(4, ver1.micro);
  test_eq(VER_PRE, ver1.status);
  test_eq(2, ver1.patchlevel);
  test_eq(IS_CVS, ver1.cvs);
  test_eq(0, tor_version_parse("0.3.4rc1", &ver1));
  test_eq(0, ver1.major);
  test_eq(3, ver1.minor);
  test_eq(4, ver1.micro);
  test_eq(VER_RC, ver1.status);
  test_eq(1, ver1.patchlevel);
  test_eq(IS_NOT_CVS, ver1.cvs);
  test_eq(0, tor_version_parse("1.3.4", &ver1));
  test_eq(1, ver1.major);
  test_eq(3, ver1.minor);
  test_eq(4, ver1.micro);
  test_eq(VER_RELEASE, ver1.status);
  test_eq(0, ver1.patchlevel);
  test_eq(IS_NOT_CVS, ver1.cvs);
  test_eq(0, tor_version_parse("1.3.4.999", &ver1));
  test_eq(1, ver1.major);
  test_eq(3, ver1.minor);
  test_eq(4, ver1.micro);
  test_eq(VER_RELEASE, ver1.status);
  test_eq(999, ver1.patchlevel);
  test_eq(IS_NOT_CVS, ver1.cvs);

  /* make sure is_obsolete_version() works */
  test_eq(1, is_obsolete_version("0.0.1", "Tor 0.0.2"));
  test_eq(1, is_obsolete_version("0.0.1", "0.0.2, Tor 0.0.3"));
  test_eq(1, is_obsolete_version("0.0.1", "0.0.2,Tor 0.0.3"));
  test_eq(1, is_obsolete_version("0.0.1", "0.0.3,BetterTor 0.0.1"));
  test_eq(0, is_obsolete_version("0.0.2", "Tor 0.0.2,Tor 0.0.3"));
  test_eq(1, is_obsolete_version("0.0.2", "Tor 0.0.2pre1,Tor 0.0.3"));
  test_eq(0, is_obsolete_version("0.1.0", "Tor 0.0.2,Tor 0.0.3"));
  test_eq(0, is_obsolete_version("0.0.7rc2", "0.0.7,Tor 0.0.7rc2,Tor 0.0.8"));
  test_eq(0, is_obsolete_version("0.0.5", "0.0.5-cvs"));
  test_eq(0, is_obsolete_version("0.0.5.1-cvs", "0.0.5"));

  test_eq(0, tor_version_as_new_as("Tor 0.0.5", "0.0.9pre1-cvs"));
  test_eq(1, tor_version_as_new_as(
          "Tor 0.0.8 on Darwin 64-121-192-100.c3-0.sfpo-ubr1.sfrn-sfpo.ca.cable.rcn.com Power Macintosh", "0.0.8rc2"));
  test_eq(0, tor_version_as_new_as(
          "Tor 0.0.8 on Darwin 64-121-192-100.c3-0.sfpo-ubr1.sfrn-sfpo.ca.cable.rcn.com Power Macintosh", "0.0.8.2"));

}

static void
test_rend_fns(void)
{
  char address1[] = "fooaddress.onion";
  char address2[] = "aaaaaaaaaaaaaaaa.onion";
  rend_service_descriptor_t *d1, *d2;
  char *encoded;
  size_t len;
  crypto_pk_env_t *pk1;
  time_t now;
  pk1 = crypto_new_pk_env();

  test_assert(!crypto_pk_generate_key(pk1));
  d1 = tor_malloc_zero(sizeof(rend_service_descriptor_t));
  d1->pk = pk1;
  now = time(NULL);
  d1->timestamp = now;
  d1->n_intro_points = 3;
  d1->intro_points = tor_malloc(sizeof(char*)*3);
  d1->intro_points[0] = tor_strdup("tom");
  d1->intro_points[1] = tor_strdup("crow");
  d1->intro_points[2] = tor_strdup("joel");
  test_assert(! rend_encode_service_descriptor(d1, pk1, &encoded, &len));
  d2 = rend_parse_service_descriptor(encoded, len);
  test_assert(d2);

  test_assert(!crypto_pk_cmp_keys(d1->pk, d2->pk));
  test_eq(d2->timestamp, now);
  test_eq(d2->n_intro_points, 3);
  test_streq(d2->intro_points[0], "tom");
  test_streq(d2->intro_points[1], "crow");
  test_streq(d2->intro_points[2], "joel");

  test_eq(-1, rend_parse_rendezvous_address(address1));
  test_eq( 0, rend_parse_rendezvous_address(address2));

  rend_service_descriptor_free(d1);
  rend_service_descriptor_free(d2);
}

int
main(int c, char**v){
#if 0
  or_options_t options; /* command-line and config-file options */

  if(getconfig(c,v,&options))
    exit(1);
#endif

  crypto_seed_rng();
  setup_directory();
  rep_hist_init();
  atexit(remove_directory);

//  puts("========================== Buffers =========================");
  if (0) test_buffers();
  puts("\n========================== Crypto ==========================");
  // add_stream_log(LOG_DEBUG, LOG_ERR, "<stdout>", stdout);
  test_crypto();
  test_crypto_dh();
  puts("\n========================= Util ============================");
  test_gzip();
  test_util();
  test_strmap();
  puts("\n========================= Onion Skins =====================");
  test_onion();
  test_onion_handshake();
  puts("\n========================= Directory Formats ===============");
  test_dir_format();
  puts("\n========================= Rendezvous functionality ========");
  test_rend_fns();
  puts("");

  if (have_failed)
    return 1;
  else
    return 0;
}

/*
  Local Variables:
  mode:c
  indent-tabs-mode:nil
  c-basic-offset:2
  End:
*/