1/* 2 * Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 *--------------------------------------------------------------------------- 26 * 27 * isdnd - common aliasfile handling 28 * ================================= 29 * 30 * NOTE: this has to stay in sync with isdntel/alias.c to be able 31 * to share a common aliasfile! 32 * 33 * $Id: alias.c,v 1.5 2006/05/24 23:44:34 christos Exp $ 34 * 35 * $FreeBSD$ 36 * 37 * last edit-date: [Mon Dec 13 21:45:19 1999] 38 * 39 *----------------------------------------------------------------------------*/ 40 41#include "isdnd.h" 42 43static struct alias *firsta = NULL; 44 45#define MAXBUFSZ 256 46 47static void free_alias(struct alias *ptr); 48 49/*---------------------------------------------------------------------------* 50 * read in and init aliases 51 *---------------------------------------------------------------------------*/ 52void 53init_alias(char *filename) 54{ 55 FILE *fp; 56 unsigned char buffer[MAXBUFSZ + 1]; 57 unsigned char number[MAXBUFSZ + 1]; 58 unsigned char name[MAXBUFSZ + 1]; 59 unsigned char *s, *d; 60 struct alias *newa = NULL; 61 struct alias *lasta = NULL; 62 63 firsta = NULL; 64 65 if ((fp = fopen(filename, "r")) == NULL) 66 { 67 logit(LL_ERR, "init_alias: error opening aliasfile %s: %s!", filename, strerror(errno)); 68 exit(1); 69 } 70 71 while((fgets(buffer, MAXBUFSZ, fp)) != NULL) 72 { 73 if (buffer[0] == '#' || buffer[0] == ' ' || 74 buffer[0] == '\t' || buffer[0] == '\n') 75 { 76 continue; 77 } 78 79 s = buffer; 80 d = number; 81 82 while(*s && (isdigit(*s))) 83 *d++ = *s++; 84 85 *d = '\0'; 86 87 while(*s && (isspace(*s))) 88 s++; 89 90 d = name; 91 92 while(*s && (isprint(*s))) 93 *d++ = *s++; 94 95 *d = '\0'; 96 97 if ((strlen(number) > 1) && (strlen(name) > 1)) 98 { 99 if ((newa = (struct alias *) malloc(sizeof(struct alias))) == NULL) 100 { 101 logit(LL_ERR, "init_alias: malloc failed for struct alias!\n"); 102 exit(1); 103 } 104 105 if ((newa->number = strdup(number)) == NULL) 106 { 107 logit(LL_ERR, "init_alias: malloc failed for number alias!\n"); 108 exit(1); 109 } 110 111 if ((newa->name = strdup(name)) == NULL) 112 { 113 logit(LL_ERR, "init_alias: malloc failed for name alias!\n"); 114 exit(1); 115 } 116 117 newa->next = NULL; 118 119 if (firsta == NULL || lasta == NULL) 120 { 121 firsta = newa; 122 } 123 else 124 { 125 lasta->next = newa; 126 } 127 lasta = newa; 128 } 129 } 130 fclose(fp); 131} 132 133/*---------------------------------------------------------------------------* 134 * free all aliases 135 *---------------------------------------------------------------------------*/ 136void 137free_aliases(void) 138{ 139 free_alias(firsta); 140} 141 142/*---------------------------------------------------------------------------* 143 * free aliases 144 *---------------------------------------------------------------------------*/ 145static void 146free_alias(struct alias *ptr) 147{ 148 149 if (ptr == NULL) 150 return; 151 152 if (ptr->next != NULL) 153 free_alias(ptr->next); 154 155 if (ptr->number != NULL) 156 free(ptr->number); 157 158 if (ptr->name != NULL) 159 free(ptr->name); 160 161 free(ptr); 162} 163 164/*---------------------------------------------------------------------------* 165 * try to find alias for number. if no alias found, return number. 166 *---------------------------------------------------------------------------*/ 167char * 168get_alias(char *number) 169{ 170 struct alias *ca = NULL; 171 172 if (firsta == NULL) 173 return(number); 174 175 ca = firsta; 176 177 for (;;) 178 { 179 if (strlen(number) == strlen(ca->number)) 180 { 181 if (!(strcmp(number, ca->number))) 182 return(ca->name); 183 } 184 if (ca->next == NULL) 185 break; 186 ca = ca->next; 187 } 188 return(number); 189} 190 191/* EOF */ 192