1 | /* |
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2 | * Test suite for error handling routines. |
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3 | * |
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4 | * Written by Russ Allbery <rra@stanford.edu> |
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5 | * Copyright 2009 Board of Trustees, Leland Stanford Jr. University |
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6 | * Copyright (c) 2004, 2005, 2006 |
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7 | * by Internet Systems Consortium, Inc. ("ISC") |
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8 | * Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
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9 | * 2002, 2003 by The Internet Software Consortium and Rich Salz |
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10 | * |
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11 | * See LICENSE for licensing terms. |
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12 | */ |
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13 | |
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14 | #include <config.h> |
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15 | #include <portable/system.h> |
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16 | |
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17 | #include <errno.h> |
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18 | #include <fcntl.h> |
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19 | #include <sys/stat.h> |
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20 | #include <sys/wait.h> |
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21 | |
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22 | #include <tests/tap/basic.h> |
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23 | #include <util/util.h> |
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24 | |
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25 | #define END (char *) 0 |
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26 | |
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27 | /* Test function type. */ |
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28 | typedef void (*test_function_t)(void); |
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29 | |
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30 | |
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31 | /* |
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32 | * Fork and execute the provided function, connecting stdout and stderr to a |
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33 | * pipe. Captures the output into the provided buffer and returns the exit |
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34 | * status as a waitpid status value. |
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35 | */ |
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36 | static int |
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37 | run_test(test_function_t function, char *buf, size_t buflen) |
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38 | { |
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39 | int fds[2]; |
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40 | pid_t child; |
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41 | ssize_t count, status; |
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42 | int rval; |
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43 | |
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44 | /* Flush stdout before we start to avoid odd forking issues. */ |
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45 | fflush(stdout); |
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46 | |
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47 | /* Set up the pipe and call the function, collecting its output. */ |
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48 | if (pipe(fds) == -1) |
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49 | sysbail("can't create pipe"); |
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50 | child = fork(); |
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51 | if (child == (pid_t) -1) { |
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52 | sysbail("can't fork"); |
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53 | } else if (child == 0) { |
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54 | /* In child. Set up our stdout and stderr. */ |
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55 | close(fds[0]); |
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56 | if (dup2(fds[1], 1) == -1) |
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57 | _exit(255); |
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58 | if (dup2(fds[1], 2) == -1) |
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59 | _exit(255); |
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60 | |
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61 | /* Now, run the function and exit successfully if it returns. */ |
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62 | (*function)(); |
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63 | fflush(stdout); |
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64 | _exit(0); |
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65 | } else { |
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66 | /* |
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67 | * In the parent; close the extra file descriptor, read the output if |
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68 | * any, and then collect the exit status. |
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69 | */ |
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70 | close(fds[1]); |
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71 | count = 0; |
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72 | do { |
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73 | status = read(fds[0], buf + count, buflen - count - 1); |
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74 | if (status > 0) |
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75 | count += status; |
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76 | } while (status > 0); |
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77 | buf[count < 0 ? 0 : count] = '\0'; |
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78 | if (waitpid(child, &rval, 0) == (pid_t) -1) |
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79 | sysbail("waitpid failed"); |
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80 | } |
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81 | return rval; |
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82 | } |
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83 | |
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84 | |
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85 | /* |
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86 | * Test functions. |
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87 | */ |
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88 | static void test1(void) { warn("warning"); } |
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89 | static void test2(void) { die("fatal"); } |
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90 | static void test3(void) { errno = EPERM; syswarn("permissions"); } |
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91 | static void test4(void) { errno = EACCES; sysdie("fatal access"); } |
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92 | static void test5(void) { |
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93 | message_program_name = "test5"; |
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94 | warn("warning"); |
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95 | } |
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96 | static void test6(void) { |
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97 | message_program_name = "test6"; |
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98 | die("fatal"); |
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99 | } |
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100 | static void test7(void) { |
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101 | message_program_name = "test7"; |
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102 | errno = EPERM; |
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103 | syswarn("perms %d", 7); |
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104 | } |
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105 | static void test8(void) { |
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106 | message_program_name = "test8"; |
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107 | errno = EACCES; |
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108 | sysdie("%st%s", "fa", "al"); |
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109 | } |
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110 | |
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111 | static int return10(void) { return 10; } |
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112 | |
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113 | static void test9(void) { |
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114 | message_fatal_cleanup = return10; |
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115 | die("fatal"); |
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116 | } |
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117 | static void test10(void) { |
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118 | message_program_name = 0; |
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119 | message_fatal_cleanup = return10; |
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120 | errno = EPERM; |
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121 | sysdie("fatal perm"); |
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122 | } |
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123 | static void test11(void) { |
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124 | message_program_name = "test11"; |
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125 | message_fatal_cleanup = return10; |
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126 | errno = EPERM; |
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127 | fputs("1st ", stdout); |
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128 | sysdie("fatal"); |
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129 | } |
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130 | |
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131 | static void log_msg(int len, const char *format, va_list args, int error) { |
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132 | fprintf(stderr, "%d %d ", len, error); |
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133 | vfprintf(stderr, format, args); |
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134 | fprintf(stderr, "\n"); |
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135 | } |
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136 | |
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137 | static void test12(void) { |
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138 | message_handlers_warn(1, log_msg); |
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139 | warn("warning"); |
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140 | } |
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141 | static void test13(void) { |
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142 | message_handlers_die(1, log_msg); |
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143 | die("fatal"); |
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144 | } |
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145 | static void test14(void) { |
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146 | message_handlers_warn(2, log_msg, log_msg); |
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147 | errno = EPERM; |
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148 | syswarn("warning"); |
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149 | } |
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150 | static void test15(void) { |
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151 | message_handlers_die(2, log_msg, log_msg); |
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152 | message_fatal_cleanup = return10; |
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153 | errno = EPERM; |
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154 | sysdie("fatal"); |
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155 | } |
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156 | static void test16(void) { |
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157 | message_handlers_warn(2, message_log_stderr, log_msg); |
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158 | message_program_name = "test16"; |
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159 | errno = EPERM; |
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160 | syswarn("warning"); |
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161 | } |
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162 | static void test17(void) { notice("notice"); } |
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163 | static void test18(void) { |
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164 | message_program_name = "test18"; |
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165 | notice("notice"); |
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166 | } |
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167 | static void test19(void) { debug("debug"); } |
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168 | static void test20(void) { |
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169 | message_handlers_notice(1, log_msg); |
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170 | notice("foo"); |
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171 | } |
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172 | static void test21(void) { |
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173 | message_handlers_debug(1, message_log_stdout); |
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174 | message_program_name = "test23"; |
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175 | debug("baz"); |
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176 | } |
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177 | static void test22(void) { |
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178 | message_handlers_die(0); |
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179 | die("hi mom!"); |
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180 | } |
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181 | static void test23(void) { |
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182 | message_handlers_warn(0); |
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183 | warn("this is a test"); |
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184 | } |
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185 | static void test24(void) { |
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186 | notice("first"); |
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187 | message_handlers_notice(0); |
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188 | notice("second"); |
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189 | message_handlers_notice(1, message_log_stdout); |
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190 | notice("third"); |
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191 | } |
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192 | |
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193 | |
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194 | /* |
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195 | * Given the intended exit status and message and the function to run, check a |
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196 | * message test. |
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197 | */ |
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198 | static void |
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199 | test_error(int status, const char *output, test_function_t function) |
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200 | { |
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201 | int real_status; |
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202 | char buf[256]; |
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203 | |
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204 | real_status = run_test(function, buf, sizeof(buf)); |
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205 | ok(WIFEXITED(real_status), "%d exited", testnum); |
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206 | is_int(status, WEXITSTATUS(real_status), "...with right status"); |
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207 | is_string(output, buf, "...and right output"); |
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208 | } |
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209 | |
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210 | |
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211 | /* |
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212 | * Given the intended status, intended message sans the appended strerror |
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213 | * output, errno, and the function to run, check the output. |
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214 | */ |
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215 | static void |
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216 | test_strerror(int status, const char *output, int error, |
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217 | test_function_t function) |
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218 | { |
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219 | char *full_output; |
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220 | |
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221 | full_output = concat(output, ": ", strerror(error), "\n", END); |
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222 | test_error(status, full_output, function); |
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223 | free(full_output); |
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224 | } |
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225 | |
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226 | |
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227 | /* |
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228 | * Run the tests. |
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229 | */ |
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230 | int |
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231 | main(void) |
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232 | { |
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233 | char buff[32]; |
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234 | |
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235 | plan(24 * 3); |
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236 | |
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237 | test_error(0, "warning\n", test1); |
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238 | test_error(1, "fatal\n", test2); |
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239 | test_strerror(0, "permissions", EPERM, test3); |
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240 | test_strerror(1, "fatal access", EACCES, test4); |
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241 | test_error(0, "test5: warning\n", test5); |
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242 | test_error(1, "test6: fatal\n", test6); |
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243 | test_strerror(0, "test7: perms 7", EPERM, test7); |
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244 | test_strerror(1, "test8: fatal", EACCES, test8); |
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245 | test_error(10, "fatal\n", test9); |
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246 | test_strerror(10, "fatal perm", EPERM, test10); |
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247 | test_strerror(10, "1st test11: fatal", EPERM, test11); |
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248 | test_error(0, "7 0 warning\n", test12); |
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249 | test_error(1, "5 0 fatal\n", test13); |
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250 | |
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251 | sprintf(buff, "%d", EPERM); |
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252 | |
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253 | test_error(0, concat("7 ", buff, " warning\n7 ", buff, " warning\n", END), |
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254 | test14); |
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255 | test_error(10, concat("5 ", buff, " fatal\n5 ", buff, " fatal\n", END), |
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256 | test15); |
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257 | test_error(0, concat("test16: warning: ", strerror(EPERM), "\n7 ", buff, |
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258 | " warning\n", END), |
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259 | test16); |
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260 | |
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261 | test_error(0, "notice\n", test17); |
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262 | test_error(0, "test18: notice\n", test18); |
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263 | test_error(0, "", test19); |
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264 | test_error(0, "3 0 foo\n", test20); |
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265 | test_error(0, "test23: baz\n", test21); |
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266 | |
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267 | /* Make sure that it's possible to turn off a message type entirely. */ |
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268 | test_error(1, "", test22); |
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269 | test_error(0, "", test23); |
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270 | test_error(0, "first\nthird\n", test24); |
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271 | |
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272 | return 0; |
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273 | } |
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