1 /* 2 * Copyright (c) 2000 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 35 #ifdef HAVE_CONFIG_H 36 #include <config.h> 37 RCSID("$Id: environment.c,v 1.1 2000/06/21 02:05:03 assar Exp $"); 38 #endif 39 40 #include <stdio.h> 41 #include <string.h> 42 #include "roken.h" 43 44 /* 45 * return count of environment assignments from `file' and 46 * list of malloced strings in `env' 47 */ 48 49 int 50 read_environment(const char *file, char ***env) 51 { 52 int i, k; 53 FILE *F; 54 char **l; 55 char buf[BUFSIZ], *p, *r; 56 57 if ((F = fopen(file, "r")) == NULL) { 58 return 0; 59 } 60 61 i = 0; 62 if (*env) { 63 l = *env; 64 while (*l != NULL) { 65 i++; 66 l++; 67 } 68 } 69 l = *env; 70 /* This is somewhat more relaxed on what it accepts then 71 * Wietses sysv_environ from K4 was... 72 */ 73 while (fgets(buf, BUFSIZ, F) != NULL) { 74 if (buf[0] == '#') 75 continue; 76 77 p = strchr(buf, '#'); 78 if (p != NULL) 79 *p = '\0'; 80 81 p = buf; 82 while (*p == ' ' || *p == '\t' || *p == '\n') p++; 83 if (*p == '\0') 84 continue; 85 86 k = strlen(p); 87 if (p[k-1] == '\n') 88 p[k-1] = '\0'; 89 90 /* Here one should check that is is a 'valid' env string... */ 91 r = strchr(p, '='); 92 if (r == NULL) 93 continue; 94 95 l = realloc(l, (i+1) * sizeof (char *)); 96 l[i++] = strdup(p); 97 } 98 fclose(F); 99 l = realloc(l, (i+1) * sizeof (char *)); 100 l[i] = NULL; 101 *env = l; 102 return i; 103 } 104