1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* 28*0Sstevel@tonic-gate * NAME 29*0Sstevel@tonic-gate * cksaved - check for an orphaned save file 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * SYNOPSIS 32*0Sstevel@tonic-gate * void cksaved(char *user) 33*0Sstevel@tonic-gate * 34*0Sstevel@tonic-gate * DESCRIPTION 35*0Sstevel@tonic-gate * cksaved() looks to see if there is a saved-mail file sitting 36*0Sstevel@tonic-gate * around which should be reinstated. These files should be sitting 37*0Sstevel@tonic-gate * around only in the case of a crash during rewriting a mail message. 38*0Sstevel@tonic-gate * 39*0Sstevel@tonic-gate * The strategy is simple: if the file exists it is appended to 40*0Sstevel@tonic-gate * the end of $MAIL. It is better that a user potentially sees the 41*0Sstevel@tonic-gate * mail twice than to lose it. 42*0Sstevel@tonic-gate * 43*0Sstevel@tonic-gate * If $MAIL doesn't exist, then a simple rename() will suffice. 44*0Sstevel@tonic-gate */ 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate #include "mail.h" 47*0Sstevel@tonic-gate void 48*0Sstevel@tonic-gate cksaved(user) 49*0Sstevel@tonic-gate char *user; 50*0Sstevel@tonic-gate { 51*0Sstevel@tonic-gate struct stat stbuf; 52*0Sstevel@tonic-gate char command[512]; 53*0Sstevel@tonic-gate char save[MAXFILENAME], mail[MAXFILENAME]; 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate cat(mail, maildir, user); 56*0Sstevel@tonic-gate cat(save, mailsave, user); 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate /* 59*0Sstevel@tonic-gate * If no save file, or size is 0, return. 60*0Sstevel@tonic-gate */ 61*0Sstevel@tonic-gate if ((stat(save, &stbuf) != 0) || (stbuf.st_size == 0)) 62*0Sstevel@tonic-gate return; 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate /* 65*0Sstevel@tonic-gate * Ok, we have a savefile. If no mailfile exists, 66*0Sstevel@tonic-gate * then we want to restore to the mailfile, 67*0Sstevel@tonic-gate * else we append to the mailfile. 68*0Sstevel@tonic-gate */ 69*0Sstevel@tonic-gate lock(user); 70*0Sstevel@tonic-gate if (stat(mail, &stbuf) != 0) { 71*0Sstevel@tonic-gate /* 72*0Sstevel@tonic-gate * Restore from the save file by linking 73*0Sstevel@tonic-gate * it to $MAIL then unlinking save file 74*0Sstevel@tonic-gate */ 75*0Sstevel@tonic-gate chmod(save, MFMODE); 76*0Sstevel@tonic-gate #ifdef SVR3 77*0Sstevel@tonic-gate if (link(save, mail) != 0) { 78*0Sstevel@tonic-gate unlock(); 79*0Sstevel@tonic-gate perror("Restore failed to link to mailfile"); 80*0Sstevel@tonic-gate return; 81*0Sstevel@tonic-gate } 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate if (unlink(save) != 0) { 84*0Sstevel@tonic-gate unlock(); 85*0Sstevel@tonic-gate perror("Cannot unlink saved file"); 86*0Sstevel@tonic-gate return; 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate #else 89*0Sstevel@tonic-gate if (rename(save, mail) != 0) { 90*0Sstevel@tonic-gate unlock(); 91*0Sstevel@tonic-gate perror("Cannot rename saved file"); 92*0Sstevel@tonic-gate return; 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate #endif 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate (void) snprintf(command, sizeof (command), 97*0Sstevel@tonic-gate "echo \"Your mailfile was just restored by the mail " 98*0Sstevel@tonic-gate "program.\nPermissions of your mailfile are set " 99*0Sstevel@tonic-gate "to 0660.\"| mail %s", user); 100*0Sstevel@tonic-gate } 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate else { 103*0Sstevel@tonic-gate FILE *Istream, *Ostream; 104*0Sstevel@tonic-gate if ((Ostream = fopen(mail, "a")) == NULL) { 105*0Sstevel@tonic-gate (void) fprintf(stderr, 106*0Sstevel@tonic-gate "%s: Cannot open file '%s' for output\n", 107*0Sstevel@tonic-gate program, mail); 108*0Sstevel@tonic-gate unlock(); 109*0Sstevel@tonic-gate return; 110*0Sstevel@tonic-gate } 111*0Sstevel@tonic-gate if ((Istream = fopen(save, "r")) == NULL) { 112*0Sstevel@tonic-gate (void) fprintf(stderr, "%s: Cannot open saved " 113*0Sstevel@tonic-gate "file '%s' for reading\n", program, save); 114*0Sstevel@tonic-gate fclose(Ostream); 115*0Sstevel@tonic-gate unlock(); 116*0Sstevel@tonic-gate return; 117*0Sstevel@tonic-gate } 118*0Sstevel@tonic-gate copystream(Istream, Ostream); 119*0Sstevel@tonic-gate fclose(Istream); 120*0Sstevel@tonic-gate fclose(Ostream); 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate if (unlink(save) != 0) { 123*0Sstevel@tonic-gate perror("Unlink of save file failed"); 124*0Sstevel@tonic-gate return; 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate (void) snprintf(command, sizeof (command), 128*0Sstevel@tonic-gate "echo \"Your mail save file has just been appended " 129*0Sstevel@tonic-gate "to your mail box by the mail program.\" | mail %s", user); 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate /* 133*0Sstevel@tonic-gate * Try to send mail to the user whose file 134*0Sstevel@tonic-gate * is being restored. 135*0Sstevel@tonic-gate */ 136*0Sstevel@tonic-gate unlock(); 137*0Sstevel@tonic-gate systm(command); 138*0Sstevel@tonic-gate } 139