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      1 /* Copyright (c) 2014, Google Inc.
      2  *
      3  * Permission to use, copy, modify, and/or distribute this software for any
      4  * purpose with or without fee is hereby granted, provided that the above
      5  * copyright notice and this permission notice appear in all copies.
      6  *
      7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
     12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
     14 
     15 #include <stdio.h>
     16 #include <string.h>
     17 
     18 #include <openssl/crypto.h>
     19 #include <openssl/err.h>
     20 #include <openssl/mem.h>
     21 
     22 
     23 static bool TestOverflow() {
     24   for (unsigned i = 0; i < ERR_NUM_ERRORS*2; i++) {
     25     ERR_put_error(1, 0 /* unused */, i+1, "test", 1);
     26   }
     27 
     28   for (unsigned i = 0; i < ERR_NUM_ERRORS - 1; i++) {
     29     uint32_t err = ERR_get_error();
     30     /* Errors are returned in order they were pushed, with the least recent ones
     31      * removed, up to |ERR_NUM_ERRORS - 1| errors. So the errors returned are
     32      * |ERR_NUM_ERRORS + 2| through |ERR_NUM_ERRORS * 2|, inclusive. */
     33     if (err == 0 || ((unsigned)ERR_GET_REASON(err)) != i + ERR_NUM_ERRORS + 2) {
     34       fprintf(stderr, "ERR_get_error failed at %u\n", i);
     35       return false;
     36     }
     37   }
     38 
     39   if (ERR_get_error() != 0) {
     40     fprintf(stderr, "ERR_get_error more than the expected number of values.\n");
     41     return false;
     42   }
     43 
     44   return true;
     45 }
     46 
     47 static bool TestPutError() {
     48   if (ERR_get_error() != 0) {
     49     fprintf(stderr, "ERR_get_error returned value before an error was added.\n");
     50     return false;
     51   }
     52 
     53   ERR_put_error(1, 0 /* unused */, 2, "test", 4);
     54   ERR_add_error_data(1, "testing");
     55 
     56   int peeked_line, line, peeked_flags, flags;
     57   const char *peeked_file, *file, *peeked_data, *data;
     58   uint32_t peeked_packed_error =
     59       ERR_peek_error_line_data(&peeked_file, &peeked_line, &peeked_data,
     60                                &peeked_flags);
     61   uint32_t packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
     62 
     63   if (peeked_packed_error != packed_error ||
     64       peeked_file != file ||
     65       peeked_data != data ||
     66       peeked_flags != flags) {
     67     fprintf(stderr, "Bad peeked error data returned.\n");
     68     return false;
     69   }
     70 
     71   if (strcmp(file, "test") != 0 ||
     72       line != 4 ||
     73       (flags & ERR_FLAG_STRING) == 0 ||
     74       ERR_GET_LIB(packed_error) != 1 ||
     75       ERR_GET_REASON(packed_error) != 2 ||
     76       strcmp(data, "testing") != 0) {
     77     fprintf(stderr, "Bad error data returned.\n");
     78     return false;
     79   }
     80 
     81   return true;
     82 }
     83 
     84 static bool TestClearError() {
     85   if (ERR_get_error() != 0) {
     86     fprintf(stderr, "ERR_get_error returned value before an error was added.\n");
     87     return false;
     88   }
     89 
     90   ERR_put_error(1, 0 /* unused */, 2, "test", 4);
     91   ERR_clear_error();
     92 
     93   if (ERR_get_error() != 0) {
     94     fprintf(stderr, "Error remained after clearing.\n");
     95     return false;
     96   }
     97 
     98   return true;
     99 }
    100 
    101 static bool TestPrint() {
    102   ERR_put_error(1, 0 /* unused */, 2, "test", 4);
    103   ERR_add_error_data(1, "testing");
    104   uint32_t packed_error = ERR_get_error();
    105 
    106   char buf[256];
    107   for (size_t i = 0; i <= sizeof(buf); i++) {
    108     ERR_error_string_n(packed_error, buf, i);
    109   }
    110 
    111   return true;
    112 }
    113 
    114 static bool TestRelease() {
    115   ERR_put_error(1, 0 /* unused */, 2, "test", 4);
    116   ERR_remove_thread_state(NULL);
    117   return true;
    118 }
    119 
    120 static bool HasSuffix(const char *str, const char *suffix) {
    121   size_t suffix_len = strlen(suffix);
    122   size_t str_len = strlen(str);
    123   if (str_len < suffix_len) {
    124     return false;
    125   }
    126   return strcmp(str + str_len - suffix_len, suffix) == 0;
    127 }
    128 
    129 static bool TestPutMacro() {
    130   int expected_line = __LINE__ + 1;
    131   OPENSSL_PUT_ERROR(USER, ERR_R_INTERNAL_ERROR);
    132 
    133   int line;
    134   const char *file;
    135   uint32_t error = ERR_get_error_line(&file, &line);
    136 
    137   if (!HasSuffix(file, "err_test.cc") ||
    138       line != expected_line ||
    139       ERR_GET_LIB(error) != ERR_LIB_USER ||
    140       ERR_GET_REASON(error) != ERR_R_INTERNAL_ERROR) {
    141     fprintf(stderr, "Bad error data returned.\n");
    142     return false;
    143   }
    144 
    145   return true;
    146 }
    147 
    148 int main() {
    149   CRYPTO_library_init();
    150 
    151   if (!TestOverflow() ||
    152       !TestPutError() ||
    153       !TestClearError() ||
    154       !TestPrint() ||
    155       !TestRelease() ||
    156       !TestPutMacro()) {
    157     return 1;
    158   }
    159 
    160   printf("PASS\n");
    161   return 0;
    162 }
    163