util.c revision 233294
1/*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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#if 0 35#ifndef lint 36#if 0 37static char sccsid[] = "@(#)util.c 8.2 (Berkeley) 4/2/94"; 38#endif 39static const char rcsid[] = 40 "$FreeBSD: head/crypto/heimdal/appl/rcp/util.c 233294 2012-03-22 08:48:42Z stas $"; 41#endif /* not lint */ 42#endif 43 44#include "rcp_locl.h" 45 46RCSID("$Id$"); 47 48char * 49colon(cp) 50 char *cp; 51{ 52 if (*cp == ':') /* Leading colon is part of file name. */ 53 return (0); 54 55 for (; *cp; ++cp) { 56 if (*cp == ':') 57 return (cp); 58 if (*cp == '/') 59 return (0); 60 } 61 return (0); 62} 63 64char * 65unbracket(char *cp) 66{ 67 char *ep; 68 69 if (*cp == '[') { 70 ep = cp + (strlen(cp) - 1); 71 if (*ep == ']') { 72 *ep = '\0'; 73 ++cp; 74 } 75 } 76 return (cp); 77} 78 79void 80verifydir(cp) 81 char *cp; 82{ 83 struct stat stb; 84 85 if (!stat(cp, &stb)) { 86 if (S_ISDIR(stb.st_mode)) 87 return; 88 errno = ENOTDIR; 89 } 90 run_err("%s: %s", cp, strerror(errno)); 91 exit(1); 92} 93 94int 95okname(cp0) 96 char *cp0; 97{ 98 int c; 99 unsigned char *cp; 100 101 cp = (unsigned char *)cp0; 102 do { 103 c = *cp; 104 if (c & 0200) 105 goto bad; 106 if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') 107 goto bad; 108 } while (*++cp); 109 return (1); 110 111bad: warnx("%s: invalid user name", cp0); 112 return (0); 113} 114 115int 116susystem(s) 117 char *s; 118{ 119 void (*istat)(int), (*qstat)(int); 120 int status; 121 pid_t pid; 122 123 pid = fork(); 124 switch (pid) { 125 case -1: 126 return (127); 127 128 case 0: 129 execl(_PATH_BSHELL, "sh", "-c", s, NULL); 130 _exit(127); 131 } 132 istat = signal(SIGINT, SIG_IGN); 133 qstat = signal(SIGQUIT, SIG_IGN); 134 if (waitpid(pid, &status, 0) < 0) 135 status = -1; 136 (void)signal(SIGINT, istat); 137 (void)signal(SIGQUIT, qstat); 138 return (status); 139} 140 141#ifndef roundup 142#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) 143#endif 144 145BUF * 146allocbuf(bp, fd, blksize) 147 BUF *bp; 148 int fd, blksize; 149{ 150 struct stat stb; 151 size_t size; 152 char *p; 153 154 if (fstat(fd, &stb) < 0) { 155 run_err("fstat: %s", strerror(errno)); 156 return (0); 157 } 158 size = roundup(stb.st_blksize, blksize); 159 if (size == 0) 160 size = blksize; 161 if (bp->cnt >= size) 162 return (bp); 163 if ((p = realloc(bp->buf, size)) == NULL) { 164 if (bp->buf) 165 free(bp->buf); 166 bp->buf = NULL; 167 bp->cnt = 0; 168 run_err("%s", strerror(errno)); 169 return (0); 170 } 171 memset(p, 0, size); 172 bp->buf = p; 173 bp->cnt = size; 174 return (bp); 175} 176 177void 178lostconn(signo) 179 int signo; 180{ 181 if (!iamremote) 182 warnx("lost connection"); 183 exit(1); 184} 185