1/* 2 * Copyright (c) 1980, 1988, 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 --- 18 unchanged lines hidden (view full) --- 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#ifndef lint |
35static const char copyright[] = |
36"@(#) Copyright (c) 1980, 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint |
41#if 0 |
42static char sccsid[] = "@(#)from.c 8.1 (Berkeley) 6/6/93"; |
43#endif 44static const char rcsid[] = 45 "$Id$"; |
46#endif /* not lint */ 47 48#include <sys/types.h> |
49#include <ctype.h> |
50#include <err.h> |
51#include <pwd.h> 52#include <stdio.h> 53#include <stdlib.h> |
54#include <paths.h> |
55#include <string.h> 56#include <unistd.h> |
57 |
58int match __P((char *, char *)); 59static void usage __P((void)); 60 61int |
62main(argc, argv) 63 int argc; 64 char **argv; 65{ 66 extern char *optarg; 67 extern int optind; 68 struct passwd *pwd; 69 int ch, newline; 70 char *file, *sender, *p; 71#if MAXPATHLEN > BUFSIZ 72 char buf[MAXPATHLEN]; 73#else 74 char buf[BUFSIZ]; 75#endif 76 77 file = sender = NULL; |
78 while ((ch = getopt(argc, argv, "f:s:")) != -1) |
79 switch((char)ch) { 80 case 'f': 81 file = optarg; 82 break; 83 case 's': 84 sender = optarg; 85 for (p = sender; *p; ++p) 86 if (isupper(*p)) 87 *p = tolower(*p); 88 break; 89 case '?': 90 default: |
91 usage(); |
92 } 93 argv += optind; 94 95 if (!file) { 96 if (*argv) { 97 (void)sprintf(buf, "%s/%s", _PATH_MAILDIR, *argv); 98 file = buf; 99 } else { 100 if (!(file = getenv("MAIL"))) { |
101 if (!(pwd = getpwuid(getuid()))) 102 errx(1, "no password file entry for you"); |
103 file = pwd->pw_name; 104 (void)sprintf(buf, 105 "%s/%s", _PATH_MAILDIR, file); 106 file = buf; 107 } 108 } 109 } 110 111 /* read from stdin */ 112 if (strcmp(file, "-") == 0) { 113 } 114 else if (!freopen(file, "r", stdin)) { |
115 errx(1, "can't read %s", file); |
116 } 117 for (newline = 1; fgets(buf, sizeof(buf), stdin);) { 118 if (*buf == '\n') { 119 newline = 1; 120 continue; 121 } 122 if (newline && !strncmp(buf, "From ", 5) && 123 (!sender || match(buf + 5, sender))) 124 printf("%s", buf); 125 newline = 0; 126 } 127 exit(0); 128} 129 |
130static void 131usage() 132{ 133 fprintf(stderr, "usage: from [-f file] [-s sender] [user]\n"); 134 exit(1); 135} 136 137int |
138match(line, sender) 139 register char *line, *sender; 140{ 141 register char ch, pch, first, *p, *t; 142 143 for (first = *sender++;;) { 144 if (isspace(ch = *line)) 145 return(0); --- 16 unchanged lines hidden --- |