src/test/test_cell_queue.c

   1 /* Copyright (c) 2013-2016, The Tor Project, Inc. */
   2 /* See LICENSE for licensing information */
   3
   4 #define CIRCUITLIST_PRIVATE
   5 #define RELAY_PRIVATE
   6 #include "or.h"
   7 #include "circuitlist.h"
   8 #include "relay.h"
   9 #include "test.h"
  10
  11 static void
  12 test_cq_manip(void *arg)
  13 {
  14   packed_cell_t *pc1=NULL, *pc2=NULL, *pc3=NULL, *pc4=NULL, *pc_tmp=NULL;
  15   cell_queue_t cq;
  16   cell_t cell;
  17   (void) arg;
  18
  19   cell_queue_init(&cq);
  20   tt_int_op(cq.n, OP_EQ, 0);
  21
  22   pc1 = packed_cell_new();
  23   pc2 = packed_cell_new();
  24   pc3 = packed_cell_new();
  25   pc4 = packed_cell_new();
  26   tt_assert(pc1 && pc2 && pc3 && pc4);
  27
  28   tt_ptr_op(NULL, OP_EQ, cell_queue_pop(&cq));
  29
  30   /* Add and remove a singleton. */
  31   cell_queue_append(&cq, pc1);
  32   tt_int_op(cq.n, OP_EQ, 1);
  33   tt_ptr_op(pc1, OP_EQ, cell_queue_pop(&cq));
  34   tt_int_op(cq.n, OP_EQ, 0);
  35
  36   /* Add and remove four items */
  37   cell_queue_append(&cq, pc4);
  38   cell_queue_append(&cq, pc3);
  39   cell_queue_append(&cq, pc2);
  40   cell_queue_append(&cq, pc1);
  41   tt_int_op(cq.n, OP_EQ, 4);
  42   tt_ptr_op(pc4, OP_EQ, cell_queue_pop(&cq));
  43   tt_ptr_op(pc3, OP_EQ, cell_queue_pop(&cq));
  44   tt_ptr_op(pc2, OP_EQ, cell_queue_pop(&cq));
  45   tt_ptr_op(pc1, OP_EQ, cell_queue_pop(&cq));
  46   tt_int_op(cq.n, OP_EQ, 0);
  47   tt_ptr_op(NULL, OP_EQ, cell_queue_pop(&cq));
  48
  49   /* Try a packed copy (wide, then narrow, which is a bit of a cheat, since a
  50    * real cell queue has only one type.) */
  51   memset(&cell, 0, sizeof(cell));
  52   cell.circ_id = 0x12345678;
  53   cell.command = 10;
  54   strlcpy((char*)cell.payload, "Lorax ipsum gruvvulus thneed amet, snergelly "
  55           "once-ler lerkim, sed do barbaloot tempor gluppitus ut labore et "
  56           "truffula magna aliqua.",
  57           sizeof(cell.payload));
  58   cell_queue_append_packed_copy(NULL /*circ*/, &cq, 0 /*exitward*/, &cell,
  59                                 1 /*wide*/, 0 /*stats*/);
  60   cell.circ_id = 0x2013;
  61   cell_queue_append_packed_copy(NULL /*circ*/, &cq, 0 /*exitward*/, &cell,
  62                                 0 /*wide*/, 0 /*stats*/);
  63   tt_int_op(cq.n, OP_EQ, 2);
  64
  65   pc_tmp = cell_queue_pop(&cq);
  66   tt_int_op(cq.n, OP_EQ, 1);
  67   tt_ptr_op(pc_tmp, OP_NE, NULL);
  68   tt_mem_op(pc_tmp->body, OP_EQ, "\x12\x34\x56\x78\x0a", 5);
  69   tt_mem_op(pc_tmp->body+5, OP_EQ, cell.payload, sizeof(cell.payload));
  70   packed_cell_free(pc_tmp);
  71
  72   pc_tmp = cell_queue_pop(&cq);
  73   tt_int_op(cq.n, OP_EQ, 0);
  74   tt_ptr_op(pc_tmp, OP_NE, NULL);
  75   tt_mem_op(pc_tmp->body, OP_EQ, "\x20\x13\x0a", 3);
  76   tt_mem_op(pc_tmp->body+3, OP_EQ, cell.payload, sizeof(cell.payload));
  77   packed_cell_free(pc_tmp);
  78   pc_tmp = NULL;
  79
  80   tt_ptr_op(NULL, OP_EQ, cell_queue_pop(&cq));
  81
  82   /* Now make sure cell_queue_clear works. */
  83   cell_queue_append(&cq, pc2);
  84   cell_queue_append(&cq, pc1);
  85   tt_int_op(cq.n, OP_EQ, 2);
  86   cell_queue_clear(&cq);
  87   pc2 = pc1 = NULL; /* prevent double-free */
  88   tt_int_op(cq.n, OP_EQ, 0);
  89
  90  done:
  91   packed_cell_free(pc1);
  92   packed_cell_free(pc2);
  93   packed_cell_free(pc3);
  94   packed_cell_free(pc4);
  95   packed_cell_free(pc_tmp);
  96
  97   cell_queue_clear(&cq);
  98 }
  99
 100 static void
 101 test_circuit_n_cells(void *arg)
 102 {
 103   packed_cell_t *pc1=NULL, *pc2=NULL, *pc3=NULL, *pc4=NULL, *pc5=NULL;
 104   origin_circuit_t *origin_c=NULL;
 105   or_circuit_t *or_c=NULL;
 106
 107   (void)arg;
 108
 109   pc1 = packed_cell_new();
 110   pc2 = packed_cell_new();
 111   pc3 = packed_cell_new();
 112   pc4 = packed_cell_new();
 113   pc5 = packed_cell_new();
 114   tt_assert(pc1 && pc2 && pc3 && pc4 && pc5);
 115
 116   or_c = or_circuit_new(0, NULL);
 117   origin_c = origin_circuit_new();
 118   origin_c->base_.purpose = CIRCUIT_PURPOSE_C_GENERAL;
 119
 120   tt_int_op(n_cells_in_circ_queues(TO_CIRCUIT(or_c)), OP_EQ, 0);
 121   cell_queue_append(&or_c->p_chan_cells, pc1);
 122   tt_int_op(n_cells_in_circ_queues(TO_CIRCUIT(or_c)), OP_EQ, 1);
 123   cell_queue_append(&or_c->base_.n_chan_cells, pc2);
 124   cell_queue_append(&or_c->base_.n_chan_cells, pc3);
 125   tt_int_op(n_cells_in_circ_queues(TO_CIRCUIT(or_c)), OP_EQ, 3);
 126
 127   tt_int_op(n_cells_in_circ_queues(TO_CIRCUIT(origin_c)), OP_EQ, 0);
 128   cell_queue_append(&origin_c->base_.n_chan_cells, pc4);
 129   cell_queue_append(&origin_c->base_.n_chan_cells, pc5);
 130   tt_int_op(n_cells_in_circ_queues(TO_CIRCUIT(origin_c)), OP_EQ, 2);
 131
 132  done:
 133   circuit_free(TO_CIRCUIT(or_c));
 134   circuit_free(TO_CIRCUIT(origin_c));
 135 }
 136
 137 struct testcase_t cell_queue_tests[] = {
 138   { "basic", test_cq_manip, TT_FORK, NULL, NULL, },
 139   { "circ_n_cells", test_circuit_n_cells, TT_FORK, NULL, NULL },
 140   END_OF_TESTCASES
 141 };
 142