/* * Copyright (c) 1994 Christos Zoulas * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christos Zoulas. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char *rcsid = "$Id: util.c,v 1.4 2005/05/16 03:12:59 deraadt Exp $"; #endif #include <err.h> #include <stdlib.h> #include <string.h> #include "util.h" /* emalloc(): * Error checked malloc */ void * emalloc(size_t s) { void *ptr = malloc(s); if (ptr == NULL) err(1, "%s", ""); return ptr; } /* erealloc(): * Error checked realloc */ void * erealloc(void *p, size_t s) { void *ptr = realloc(p, s); if (ptr == NULL) err(1, "%s", ""); return ptr; } /* getline(): * Read a line from a file parsing continuations ending in \ * and eliminating trailing newlines. */ char * getline(FILE *fp, size_t *size) { size_t s, len = 0; char *buf = NULL, *ptr; int cnt = 1; while (cnt) { if ((ptr = fgetln(fp, &s)) == NULL) { *size = len; return buf; } if (ptr[s - 1] == '\n') /* the newline may be missing at EOF */ s--; /* forget newline */ if (s && (cnt = (ptr[s - 1] == '\\'))) /* check for \\ */ s--; /* forget \\ */ buf = erealloc(buf, len + s + 1); memcpy(buf + len, ptr, s); len += s; buf[len] = '\0'; } *size = len; return buf; }