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0
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21
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22 /*
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23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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24 * Use is subject to license terms.
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25 */
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26
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27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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28 /* All Rights Reserved */
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29
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30 /*
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31 * University Copyright- Copyright (c) 1982, 1986, 1988
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32 * The Regents of the University of California
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33 * All Rights Reserved
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34 *
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35 * University Acknowledgment- Portions of this document are derived from
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36 * software developed by the University of California, Berkeley, and its
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37 * contributors.
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38 */
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39
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40 #pragma ident "@(#)main.c 1.37 06/08/10 SMI"
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41
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42 #include "rcv.h"
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43 #ifndef preSVr4
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44 #include <locale.h>
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45 #endif
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46
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47 /*
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48 * mailx -- a modified version of a University of California at Berkeley
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49 * mail program
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50 *
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51 * Startup -- interface with user.
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52 */
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53
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54 static void hdrstop(int);
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55
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56 static jmp_buf hdrjmp;
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57
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58 const char *const version = "mailx version 5.0";
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59
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60 /*
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61 * Find out who the user is, copy his mail file (if exists) into
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62 * /tmp/Rxxxxx and set up the message pointers. Then, print out the
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63 * message headers and read user commands.
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64 *
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65 * Command line syntax:
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66 * mailx [ -i ] [ -r address ] [ -h number ] [ -f [ name ] ]
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67 * or:
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68 * mailx [ -i ] [ -r address ] [ -h number ] people ...
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69 *
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70 * and a bunch of other options.
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71 */
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72
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73 int
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74 main(int argc, char **argv)
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75 {
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76 register char *ef;
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77 register int argp;
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78 int mustsend, f, goerr = 0;
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79 void (*prevint)(int);
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80 int loaded = 0;
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81 struct termio tbuf;
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82 struct termios tbufs;
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83 int c;
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84 char *cwd, *mf;
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85
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86 /*
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87 * Set up a reasonable environment.
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88 * Figure out whether we are being run interactively, set up
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89 * all the temporary files, buffer standard output, and so forth.
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90 */
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91
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92 #ifndef preSVr4
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93 (void)setlocale(LC_ALL, "");
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94 #endif
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95 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
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96 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
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97 #endif
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98 (void) textdomain(TEXT_DOMAIN);
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99
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100 #ifdef SIGCONT
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101 sigset(SIGCONT, SIG_DFL);
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102 #endif
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103 rpterr = 0; /* initialize; set when we output to stderr */
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104 progname = argv[0];
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105 if (progname[strlen(progname) - 1] != 'x') {
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106 assign("bsdcompat", "");
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107 assign("escapeok", ""); /* XXX */
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108 }
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109 myegid = getegid();
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110 myrgid = getgid();
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111 myeuid = geteuid();
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112 myruid = getuid();
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113 mypid = getpid();
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114 setgid(myrgid);
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115 setuid(myruid);
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116 inithost();
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117 intty = isatty(0);
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118 if (ioctl(1, TCGETS, &tbufs) < 0) {
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119 if (ioctl(1, TCGETA, &tbuf)==0) {
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120 outtty = 1;
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121 baud = tbuf.c_cflag & CBAUD;
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122 } else
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123 baud = B9600;
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124 } else {
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125 outtty = 1;
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126 baud = cfgetospeed(&tbufs);
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127 }
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128 image = -1;
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129
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130 /*
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131 * Now, determine how we are being used.
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132 * We successively pick off instances of -r, -h, -f, and -i.
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133 * If called as "rmail" we note this fact for letter sending.
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134 * If there is anything left, it is the base of the list
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135 * of users to mail to. Argp will be set to point to the
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136 * first of these users.
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137 */
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138
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139 ef = NOSTR;
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140 argp = -1;
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141 mustsend = 0;
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142 if (argc > 0 && **argv == 'r')
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143 rmail++;
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144 while ((c = getopt(argc, argv, "b:Bc:defFh:HiInNr:s:u:UtT:vV~")) != EOF)
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145 switch (c) {
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146 case 'e':
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147 /*
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148 * exit status only
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149 */
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150 exitflg++;
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151 break;
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152
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153 case 'r':
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154 /*
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155 * Next argument is address to be sent along
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156 * to the mailer.
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157 */
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158 mustsend++;
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159 rflag = optarg;
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160 break;
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161
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162 case 'T':
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163 /*
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164 * Next argument is temp file to write which
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165 * articles have been read/deleted for netnews.
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166 */
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167 Tflag = optarg;
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168 if ((f = creat(Tflag, TEMPPERM)) < 0) {
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169 perror(Tflag);
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170 exit(1);
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171 }
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172 close(f);
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173 /* fall through for -I too */
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174 /* FALLTHROUGH */
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175
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176 case 'I':
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177 /*
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178 * print newsgroup in header summary
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179 */
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180 newsflg++;
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181 break;
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182
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183 case 'u':
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184 /*
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185 * Next argument is person's mailbox to use.
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186 * Treated the same as "-f /var/mail/user".
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187 */
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188 {
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189 static char u[PATHSIZE];
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190 snprintf(u, sizeof (u), "%s%s", maildir, optarg);
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191 ef = u;
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192 break;
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193 }
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194
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195 case 'i':
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196 /*
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197 * User wants to ignore interrupts.
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198 * Set the variable "ignore"
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199 */
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200 assign("ignore", "");
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201 break;
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202
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203 case 'U':
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204 UnUUCP++;
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205 break;
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206
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207 case 'd':
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208 assign("debug", "");
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209 break;
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210
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211 case 'h':
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212 /*
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213 * Specified sequence number for network.
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214 * This is the number of "hops" made so
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215 * far (count of times message has been
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216 * forwarded) to help avoid infinite mail loops.
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217 */
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218 mustsend++;
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219 hflag = atoi(optarg);
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220 if (hflag == 0) {
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221 fprintf(stderr,
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222 gettext("-h needs non-zero number\n"));
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223 goerr++;
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224 }
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225 break;
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226
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227 case 's':
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228 /*
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229 * Give a subject field for sending from
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230 * non terminal
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231 */
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232 mustsend++;
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233 sflag = optarg;
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234 break;
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235
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236 case 'c': /* Cc: from command line */
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237 mustsend++;
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238 cflag = optarg;
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239 break;
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240
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241 case 'b': /* Bcc: from command line */
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242 mustsend++;
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243 bflag = optarg;
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244 break;
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245
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246 case 'f':
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247 /*
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248 * User is specifying file to "edit" with mailx,
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249 * as opposed to reading system mailbox.
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250 * If no argument is given after -f, we read his/her
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251 * $MBOX file or mbox in his/her home directory.
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252 */
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253 ef = (argc == optind || *argv[optind] == '-')
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254 ? "" : argv[optind++];
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255 if (*ef && *ef != '/' && *ef != '+')
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256 cwd = getcwd(NOSTR, PATHSIZE);
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257 break;
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258
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259 case 'F':
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260 Fflag++;
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261 mustsend++;
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262 break;
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263
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264 case 'n':
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265 /*
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266 * User doesn't want to source
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267 * /etc/mail/mailx.rc
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268 */
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269 nosrc++;
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270 break;
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271
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272 case 'N':
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273 /*
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274 * Avoid initial header printing.
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275 */
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276 noheader++;
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277 break;
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278
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279 case 'H':
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280 /*
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281 * Print headers and exit
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282 */
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283 Hflag++;
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284 break;
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285
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286 case 'V':
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287 puts(version);
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288 return 0;
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289
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290 case '~':
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291 /*
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292 * Permit tildas no matter where
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293 * the input is coming from.
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294 */
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295 assign("escapeok", "");
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296 break;
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297
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298 case 'v':
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299 /*
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300 * Send mailer verbose flag
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301 */
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302 assign("verbose", "");
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303 break;
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304
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305 case 'B':
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306 /*
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307 * Don't buffer output
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308 * (Line buffered is good enough)
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309 */
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310 setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
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311 setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
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312 break;
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313
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314 case 't':
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315 /*
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316 * Like sendmail -t, read headers from text
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317 */
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318 tflag++;
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319 mustsend++;
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320 break;
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321
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322 case '?':
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323 default:
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324 goerr++;
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325 break;
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326 }
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327
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328 if (optind != argc)
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329 argp = optind;
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330
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331 /*
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332 * Check for inconsistent arguments.
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333 */
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334
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335 if (newsflg && ef==NOSTR) {
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336 fprintf(stderr, gettext("Need -f with -I flag\n"));
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337 goerr++;
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338 }
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339 if (ef != NOSTR && argp != -1) {
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340 fprintf(stderr,
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341 gettext("Cannot give -f and people to send to.\n"));
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342 goerr++;
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343 }
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344 if (exitflg && (mustsend || argp != -1))
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345 exit(1); /* nonsense flags involving -e simply exit */
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346 if (tflag && argp != -1) {
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347 fprintf(stderr,
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348 gettext("Ignoring recipients on command line with -t\n"));
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349 argp = -1;
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350 } else if (!tflag && mustsend && argp == -1) {
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351 fprintf(stderr,
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352 gettext("The flags you gave are used only when sending mail.\n"));
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353 goerr++;
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354 }
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355 if (goerr) {
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356 fprintf(stderr,
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357 gettext("Usage: %s -eiIUdFntBNHvV~ -T FILE -u USER -h hops -r address\n"),
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358 progname);
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359 fprintf(stderr,
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360 gettext("\t\t-s SUBJECT -f FILE users\n"));
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361 exit(1);
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362 }
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363 tinit();
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364 input = stdin;
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365 rcvmode = !tflag && argp == -1;
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366 if (!nosrc)
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367 load(MASTER);
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368
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369 if (!rcvmode) {
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370 load(Getf("MAILRC"));
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371 if (tflag)
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372 tmail();
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373 else
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374 mail(&argv[argp]);
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375 exit(senderr ? senderr : rpterr);
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376 }
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377
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378 /*
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379 * Ok, we are reading mail.
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380 * Decide whether we are editing a mailbox or reading
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381 * the system mailbox, and open up the right stuff.
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382 *
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383 * Do this before sourcing the MAILRC, because there might be
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384 * a 'chdir' there that breaks the -f option. But if the
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385 * file specified with -f is a folder name, go ahead and
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386 * source the MAILRC anyway so that "folder" will be defined.
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387 */
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388
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389 nstrcpy(origname, PATHSIZE, mailname);
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390 editfile = mailname;
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391
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392 if (ef != NOSTR) {
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393 if (ef == NOSTR || *ef == '\0' || *ef == '+') {
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394 load(Getf("MAILRC"));
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395 loaded++;
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396 }
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397 ef = *ef ? safeexpand(ef) : Getf("MBOX");
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398 nstrcpy(origname, PATHSIZE, ef);
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399 if (ef[0] != '/') {
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400 if (cwd == NOSTR)
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401 cwd = getcwd(NOSTR, PATHSIZE);
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402 nstrcat(cwd, PATHSIZE, "/");
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403 nstrcat(cwd, PATHSIZE, ef);
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404 ef = cwd;
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405 }
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406 editfile = ef;
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407 edit++;
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408 }
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409
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410 if (setfile(editfile, edit) < 0)
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411 exit(1);
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412
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413 if (!loaded)
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414 load(Getf("MAILRC"));
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415 if (msgCount > 0 && !noheader && value("header") != NOSTR) {
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416 if (setjmp(hdrjmp) == 0) {
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417 if ((prevint = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
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418 sigset(SIGINT, hdrstop);
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419 announce();
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420 fflush(stdout);
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421 sigset(SIGINT, prevint);
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422 }
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423 }
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424 if (Hflag || (!edit && msgCount == 0)) {
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425 if (!Hflag) {
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426 fprintf(stderr, gettext("No mail for %s\n"), myname);
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427 Verhogen();
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428 }
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429 fflush(stdout);
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430 exit(rpterr);
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431 }
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432 commands();
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433 sigset(SIGHUP, SIG_IGN);
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434 sigset(SIGINT, SIG_IGN);
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435 sigset(SIGQUIT, SIG_IGN);
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436 if (!outtty)
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437 sigset(SIGPIPE, SIG_IGN);
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438 if (edit)
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439 edstop(0);
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440 else {
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441 quit(0);
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442 Verhogen();
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443 }
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444 return (rpterr);
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445 }
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446
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447 /*
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448 * Interrupt printing of the headers.
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449 */
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450 static void
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451 #ifdef __cplusplus
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452 hdrstop(int)
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453 #else
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454 /* ARGSUSED */
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455 hdrstop(int s)
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456 #endif
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457 {
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458
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459 fflush(stdout);
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460 fprintf(stderr, gettext("\nInterrupt\n"));
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461 # ifdef OLD_BSD_SIGS
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462 sigrelse(SIGINT);
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463 # endif
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464 longjmp(hdrjmp, 1);
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465 }
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