1/* $NetBSD: ex_source.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */ 2/*- 3 * Copyright (c) 1992, 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1992, 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 */ 10 11#include "config.h" 12 13#include <sys/cdefs.h> 14#if 0 15#ifndef lint 16static const char sccsid[] = "Id: ex_source.c,v 10.16 2001/08/18 21:49:58 skimo Exp (Berkeley) Date: 2001/08/18 21:49:58 "; 17#endif /* not lint */ 18#else 19__RCSID("$NetBSD: ex_source.c,v 1.3 2014/01/26 21:43:45 christos Exp $"); 20#endif 21 22#include <sys/types.h> 23#include <sys/queue.h> 24#include <sys/stat.h> 25 26#include <bitstring.h> 27#include <errno.h> 28#include <fcntl.h> 29#include <limits.h> 30#include <stdio.h> 31#include <stdlib.h> 32#include <string.h> 33#include <unistd.h> 34 35#include "../common/common.h" 36 37/* 38 * ex_source -- :source file 39 * Execute ex commands from a file. 40 * 41 * PUBLIC: int ex_source __P((SCR *, EXCMD *)); 42 */ 43int 44ex_source(SCR *sp, EXCMD *cmdp) 45{ 46 struct stat sb; 47 int fd, len; 48 char *bp; 49 const char *name; 50 size_t nlen; 51 const CHAR_T *wp; 52 CHAR_T *dp; 53 size_t wlen; 54 55 INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1, name, nlen); 56 if ((fd = open(name, O_RDONLY, 0)) < 0 || fstat(fd, &sb)) 57 goto err; 58 59 /* 60 * XXX 61 * I'd like to test to see if the file is too large to malloc. Since 62 * we don't know what size or type off_t's or size_t's are, what the 63 * largest unsigned integral type is, or what random insanity the local 64 * C compiler will perpetrate, doing the comparison in a portable way 65 * is flatly impossible. So, put an fairly unreasonable limit on it, 66 * I don't want to be dropping core here. 67 */ 68#define MEGABYTE 1048576 69 if (sb.st_size > MEGABYTE) { 70 errno = ENOMEM; 71 goto err; 72 } 73 74 MALLOC(sp, bp, char *, (size_t)sb.st_size + 1); 75 if (bp == NULL) { 76 (void)close(fd); 77 return (1); 78 } 79 bp[sb.st_size] = '\0'; 80 81 /* Read the file into memory. */ 82 len = read(fd, bp, (int)sb.st_size); 83 (void)close(fd); 84 if (len == -1 || len != sb.st_size) { 85 if (len != sb.st_size) 86 errno = EIO; 87 free(bp); 88err: msgq_str(sp, M_SYSERR, name, "%s"); 89 return (1); 90 } 91 92 if (CHAR2INT(sp, bp, (size_t)sb.st_size + 1, wp, wlen)) 93 msgq(sp, M_ERR, "323|Invalid input. Truncated."); 94 dp = v_wstrdup(sp, wp, wlen - 1); 95 free(bp); 96 /* Put it on the ex queue. */ 97 INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1, name, nlen); 98 return (ex_run_str(sp, name, dp, wlen - 1, 1, 1)); 99} 100