1 /*- 2 * Copyright (c) 2007 Sean C. Farley <scf@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 30 31 #include <sys/cdefs.h> 32 extern char **environ; 33 const char *envName = "FOOBAR"; 34 const char *envValSmall = "Hi"; 35 const char *envValLarge = "Hi, again"; 36 const char *envValAny = "Any value"; 37 38 39 int 40 main(int argc, char **argv) 41 { 42 const char *env1 = NULL; 43 const char *env2 = NULL; 44 const char *env3 = NULL; 45 const char *env4 = NULL; 46 const char *env5 = NULL; 47 int testNdx; 48 49 /* Clean slate. */ 50 environ = NULL; 51 testNdx = 0; 52 53 /* Initial value of variable. */ 54 if (getenv(envName) != NULL) 55 printf("not "); 56 printf("ok %d - getenv(\"%s\")\n", ++testNdx, envName); 57 58 /* Set value of variable to smaller value and get value. */ 59 if ((setenv(envName, envValSmall, 1) != 0) || 60 ((env1 = getenv(envName)) == NULL) || 61 (strcmp(env1, envValSmall) != 0)) 62 printf("not "); 63 printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName, 64 envValSmall); 65 66 /* Unset variable. */ 67 if ((unsetenv(envName) == -1) || ((env2 = getenv(envName)) != NULL)) 68 printf("not "); 69 printf("ok %d - unsetenv(\"%s\")\n", ++testNdx, envName); 70 71 /* Set variable to bigger value and get value. */ 72 if ((setenv(envName, envValLarge, 1) != 0) || 73 ((env3 = getenv(envName)) == NULL) || 74 (strcmp(env3, envValLarge) != 0)) 75 printf("not "); 76 printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName, 77 envValLarge); 78 79 /* Set variable to smaller value and get value. */ 80 if ((setenv(envName, envValSmall, 1) != 0) || 81 ((env4 = getenv(envName)) == NULL) || 82 (strcmp(env4, envValSmall) != 0)) 83 printf("not "); 84 printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName, 85 envValSmall); 86 87 /* Set variable to any value without overwrite and get value. */ 88 if ((setenv(envName, envValAny, 0) != 0) || 89 ((env5 = getenv(envName)) == NULL) || 90 (strcmp(env5, envValAny) == 0)) 91 printf("not "); 92 printf("ok %d - setenv(\"%s\", \"%s\", 0)\n", ++testNdx, envName, 93 envValAny); 94 95 /* 96 * Verify FreeBSD-ism about allowing a program to keep old pointers without 97 * risk of segfaulting. 98 */ 99 if ((strcmp(env1, envValSmall) != 0) || 100 (strcmp(env3, envValSmall) != 0) || 101 (strcmp(env4, envValSmall) != 0)) 102 printf("not "); 103 printf("ok %d - old variables point to valid memory\n", ++testNdx); 104 105 exit(EXIT_SUCCESS); 106 } 107