119304Speter/*- 219304Speter * Copyright (c) 1992, 1993, 1994 319304Speter * The Regents of the University of California. All rights reserved. 419304Speter * Copyright (c) 1992, 1993, 1994, 1995, 1996 519304Speter * Keith Bostic. All rights reserved. 619304Speter * 719304Speter * See the LICENSE file for redistribution information. 819304Speter */ 919304Speter 1019304Speter#include "config.h" 1119304Speter 1219304Speter#ifndef lint 13254225Speterstatic const char sccsid[] = "$Id: ex_source.c,v 10.17 2011/12/19 16:17:06 zy Exp $"; 1419304Speter#endif /* not lint */ 1519304Speter 1619304Speter#include <sys/types.h> 1719304Speter#include <sys/queue.h> 1819304Speter#include <sys/stat.h> 1919304Speter 2019304Speter#include <bitstring.h> 2119304Speter#include <errno.h> 2219304Speter#include <fcntl.h> 2319304Speter#include <limits.h> 2419304Speter#include <stdio.h> 2519304Speter#include <stdlib.h> 2619304Speter#include <string.h> 2719304Speter#include <unistd.h> 2819304Speter 2919304Speter#include "../common/common.h" 3019304Speter 3119304Speter/* 3219304Speter * ex_source -- :source file 3319304Speter * Execute ex commands from a file. 3419304Speter * 3519304Speter * PUBLIC: int ex_source __P((SCR *, EXCMD *)); 3619304Speter */ 3719304Speterint 38254225Speterex_source(SCR *sp, EXCMD *cmdp) 3919304Speter{ 4019304Speter struct stat sb; 4119304Speter int fd, len; 42254225Speter char *bp; 43254225Speter char *name, *np; 44254225Speter size_t nlen; 45254225Speter CHAR_T *wp; 46254225Speter size_t wlen; 47254225Speter int rc; 4819304Speter 49254225Speter INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1, name, nlen); 5019304Speter if ((fd = open(name, O_RDONLY, 0)) < 0 || fstat(fd, &sb)) 5119304Speter goto err; 5219304Speter 5319304Speter /* 5419304Speter * XXX 5519304Speter * I'd like to test to see if the file is too large to malloc. Since 5619304Speter * we don't know what size or type off_t's or size_t's are, what the 5719304Speter * largest unsigned integral type is, or what random insanity the local 5819304Speter * C compiler will perpetrate, doing the comparison in a portable way 5919304Speter * is flatly impossible. So, put an fairly unreasonable limit on it, 6019304Speter * I don't want to be dropping core here. 6119304Speter */ 6219304Speter#define MEGABYTE 1048576 6319304Speter if (sb.st_size > MEGABYTE) { 6419304Speter errno = ENOMEM; 6519304Speter goto err; 6619304Speter } 6719304Speter 6819304Speter MALLOC(sp, bp, char *, (size_t)sb.st_size + 1); 6919304Speter if (bp == NULL) { 7019304Speter (void)close(fd); 7119304Speter return (1); 7219304Speter } 7319304Speter bp[sb.st_size] = '\0'; 7419304Speter 7519304Speter /* Read the file into memory. */ 7619304Speter len = read(fd, bp, (int)sb.st_size); 7719304Speter (void)close(fd); 7819304Speter if (len == -1 || len != sb.st_size) { 7919304Speter if (len != sb.st_size) 8019304Speter errno = EIO; 8119304Speter free(bp); 8219304Spetererr: msgq_str(sp, M_SYSERR, name, "%s"); 8319304Speter return (1); 8419304Speter } 8519304Speter 86254225Speter np = strdup(name); 87254225Speter if (CHAR2INT(sp, bp, (size_t)sb.st_size + 1, wp, wlen)) 88254225Speter msgq(sp, M_ERR, "323|Invalid input. Truncated."); 8919304Speter /* Put it on the ex queue. */ 90254225Speter rc = ex_run_str(sp, np, wp, wlen - 1, 1, 0); 91254225Speter if (np != NULL) 92254225Speter free(np); 93254225Speter free(bp); 94254225Speter return (rc); 9519304Speter} 96