1*0ecc72fcSmillert /* $OpenBSD: fio.c,v 1.10 1997/07/24 17:27:11 millert Exp $ */ 2db59c1a6Smillert /* $NetBSD: fio.c,v 1.8 1997/07/07 22:57:55 phil Exp $ */ 37eb34045Sderaadt 4df930be7Sderaadt /* 5df930be7Sderaadt * Copyright (c) 1980, 1993 6df930be7Sderaadt * The Regents of the University of California. All rights reserved. 7df930be7Sderaadt * 8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without 9df930be7Sderaadt * modification, are permitted provided that the following conditions 10df930be7Sderaadt * are met: 11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright 12df930be7Sderaadt * notice, this list of conditions and the following disclaimer. 13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright 14df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the 15df930be7Sderaadt * documentation and/or other materials provided with the distribution. 16df930be7Sderaadt * 3. All advertising materials mentioning features or use of this software 17df930be7Sderaadt * must display the following acknowledgement: 18df930be7Sderaadt * This product includes software developed by the University of 19df930be7Sderaadt * California, Berkeley and its contributors. 20df930be7Sderaadt * 4. Neither the name of the University nor the names of its contributors 21df930be7Sderaadt * may be used to endorse or promote products derived from this software 22df930be7Sderaadt * without specific prior written permission. 23df930be7Sderaadt * 24df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34df930be7Sderaadt * SUCH DAMAGE. 35df930be7Sderaadt */ 36df930be7Sderaadt 37df930be7Sderaadt #ifndef lint 387eb34045Sderaadt #if 0 39db59c1a6Smillert static char sccsid[] = "@(#)fio.c 8.2 (Berkeley) 4/20/95"; 407eb34045Sderaadt #else 41*0ecc72fcSmillert static char rcsid[] = "$OpenBSD: fio.c,v 1.10 1997/07/24 17:27:11 millert Exp $"; 427eb34045Sderaadt #endif 43df930be7Sderaadt #endif /* not lint */ 44df930be7Sderaadt 45df930be7Sderaadt #include "rcv.h" 46df930be7Sderaadt #include <sys/file.h> 47df930be7Sderaadt #include <sys/wait.h> 48df930be7Sderaadt 49df930be7Sderaadt #include <unistd.h> 50df930be7Sderaadt #include <paths.h> 51df930be7Sderaadt #include <errno.h> 52df930be7Sderaadt #include "extern.h" 53df930be7Sderaadt 54df930be7Sderaadt /* 55df930be7Sderaadt * Mail -- a mail program 56df930be7Sderaadt * 57df930be7Sderaadt * File I/O. 58df930be7Sderaadt */ 59df930be7Sderaadt 60df930be7Sderaadt /* 61df930be7Sderaadt * Set up the input pointers while copying the mail file into /tmp. 62df930be7Sderaadt */ 63df930be7Sderaadt void 64db59c1a6Smillert setptr(ibuf, offset) 65df930be7Sderaadt register FILE *ibuf; 66db59c1a6Smillert off_t offset; 67df930be7Sderaadt { 68df930be7Sderaadt register int c, count; 69df930be7Sderaadt register char *cp, *cp2; 70df930be7Sderaadt struct message this; 71df930be7Sderaadt FILE *mestmp; 72df930be7Sderaadt int maybe, inhead; 73c32a3250Sderaadt char linebuf[LINESIZE], pathbuf[PATHSIZE]; 74db59c1a6Smillert int omsgCount; 75df930be7Sderaadt 76df930be7Sderaadt /* Get temporary file. */ 77db59c1a6Smillert (void)snprintf(pathbuf, sizeof(pathbuf), "%s/mail.XXXXXXXXXX", tmpdir); 78db59c1a6Smillert if ((c = mkstemp(pathbuf)) == -1 || (mestmp = Fdopen(c, "r+")) == NULL) 79db59c1a6Smillert err(1, "can't open %s", pathbuf); 80*0ecc72fcSmillert (void)rm(pathbuf); 81df930be7Sderaadt 82db59c1a6Smillert if (offset == 0) { 83df930be7Sderaadt msgCount = 0; 84db59c1a6Smillert } else { 85db59c1a6Smillert /* Seek into the file to get to the new messages */ 86db59c1a6Smillert (void)fseek(ibuf, offset, 0); 87db59c1a6Smillert /* 88db59c1a6Smillert * We need to make "offset" a pointer to the end of 89db59c1a6Smillert * the temp file that has the copy of the mail file. 90db59c1a6Smillert * If any messages have been edited, this will be 91db59c1a6Smillert * different from the offset into the mail file. 92db59c1a6Smillert */ 93db59c1a6Smillert (void)fseek(otf, 0L, SEEK_END); 94db59c1a6Smillert offset = ftell(otf); 95db59c1a6Smillert } 96db59c1a6Smillert omsgCount = msgCount; 97df930be7Sderaadt maybe = 1; 98df930be7Sderaadt inhead = 0; 99df930be7Sderaadt this.m_flag = MUSED|MNEW; 100df930be7Sderaadt this.m_size = 0; 101df930be7Sderaadt this.m_lines = 0; 102df930be7Sderaadt this.m_block = 0; 103df930be7Sderaadt this.m_offset = 0; 104df930be7Sderaadt for (;;) { 105db59c1a6Smillert if (fgets(linebuf, sizeof(linebuf), ibuf) == NULL) { 106db59c1a6Smillert if (append(&this, mestmp)) 107db59c1a6Smillert err(1, "temporary file"); 108db59c1a6Smillert makemessage(mestmp, omsgCount); 109df930be7Sderaadt return; 110df930be7Sderaadt } 111df930be7Sderaadt count = strlen(linebuf); 112db59c1a6Smillert (void)fwrite(linebuf, sizeof(*linebuf), count, otf); 113db59c1a6Smillert if (ferror(otf)) 114db59c1a6Smillert err(1, "/tmp"); 115db59c1a6Smillert linebuf[count - 1] = '\0'; 116df930be7Sderaadt if (maybe && linebuf[0] == 'F' && ishead(linebuf)) { 117df930be7Sderaadt msgCount++; 118db59c1a6Smillert if (append(&this, mestmp)) 119db59c1a6Smillert err(1, "temporary file"); 120df930be7Sderaadt this.m_flag = MUSED|MNEW; 121df930be7Sderaadt this.m_size = 0; 122df930be7Sderaadt this.m_lines = 0; 123df930be7Sderaadt this.m_block = blockof(offset); 124df930be7Sderaadt this.m_offset = offsetof(offset); 125df930be7Sderaadt inhead = 1; 126df930be7Sderaadt } else if (linebuf[0] == 0) { 127df930be7Sderaadt inhead = 0; 128df930be7Sderaadt } else if (inhead) { 129df930be7Sderaadt for (cp = linebuf, cp2 = "status";; cp++) { 130df930be7Sderaadt if ((c = *cp2++) == 0) { 131df930be7Sderaadt while (isspace(*cp++)) 132df930be7Sderaadt ; 133df930be7Sderaadt if (cp[-1] != ':') 134df930be7Sderaadt break; 1357eb34045Sderaadt while ((c = *cp++) != '\0') 136df930be7Sderaadt if (c == 'R') 137df930be7Sderaadt this.m_flag |= MREAD; 138df930be7Sderaadt else if (c == 'O') 139df930be7Sderaadt this.m_flag &= ~MNEW; 140df930be7Sderaadt inhead = 0; 141df930be7Sderaadt break; 142df930be7Sderaadt } 143df930be7Sderaadt if (*cp != c && *cp != toupper(c)) 144df930be7Sderaadt break; 145df930be7Sderaadt } 146df930be7Sderaadt } 147df930be7Sderaadt offset += count; 148df930be7Sderaadt this.m_size += count; 149df930be7Sderaadt this.m_lines++; 150df930be7Sderaadt maybe = linebuf[0] == 0; 151df930be7Sderaadt } 152df930be7Sderaadt } 153df930be7Sderaadt 154df930be7Sderaadt /* 155df930be7Sderaadt * Drop the passed line onto the passed output buffer. 156df930be7Sderaadt * If a write error occurs, return -1, else the count of 157db59c1a6Smillert * characters written, including the newline if requested. 158df930be7Sderaadt */ 159df930be7Sderaadt int 160db59c1a6Smillert putline(obuf, linebuf, outlf) 161df930be7Sderaadt FILE *obuf; 162df930be7Sderaadt char *linebuf; 163db59c1a6Smillert int outlf; 164df930be7Sderaadt { 165df930be7Sderaadt register int c; 166df930be7Sderaadt 167df930be7Sderaadt c = strlen(linebuf); 168db59c1a6Smillert (void)fwrite(linebuf, sizeof(*linebuf), c, obuf); 169db59c1a6Smillert if (outlf) { 170df930be7Sderaadt (void)putc('\n', obuf); 171db59c1a6Smillert c++; 172db59c1a6Smillert } 173df930be7Sderaadt if (ferror(obuf)) 174df930be7Sderaadt return(-1); 175db59c1a6Smillert return(c); 176df930be7Sderaadt } 177df930be7Sderaadt 178df930be7Sderaadt /* 179df930be7Sderaadt * Read up a line from the specified input into the line 180df930be7Sderaadt * buffer. Return the number of characters read. Do not 181df930be7Sderaadt * include the newline at the end. 182df930be7Sderaadt */ 183df930be7Sderaadt int 184df930be7Sderaadt readline(ibuf, linebuf, linesize) 185df930be7Sderaadt FILE *ibuf; 186df930be7Sderaadt char *linebuf; 187df930be7Sderaadt int linesize; 188df930be7Sderaadt { 189df930be7Sderaadt register int n; 190df930be7Sderaadt 191df930be7Sderaadt clearerr(ibuf); 192df930be7Sderaadt if (fgets(linebuf, linesize, ibuf) == NULL) 193db59c1a6Smillert return(-1); 194db59c1a6Smillert 195df930be7Sderaadt n = strlen(linebuf); 196df930be7Sderaadt if (n > 0 && linebuf[n - 1] == '\n') 197df930be7Sderaadt linebuf[--n] = '\0'; 198db59c1a6Smillert return(n); 199df930be7Sderaadt } 200df930be7Sderaadt 201df930be7Sderaadt /* 202df930be7Sderaadt * Return a file buffer all ready to read up the 203df930be7Sderaadt * passed message pointer. 204df930be7Sderaadt */ 205df930be7Sderaadt FILE * 206df930be7Sderaadt setinput(mp) 207df930be7Sderaadt register struct message *mp; 208df930be7Sderaadt { 209df930be7Sderaadt 210df930be7Sderaadt fflush(otf); 211df930be7Sderaadt if (fseek(itf, (long)positionof(mp->m_block, mp->m_offset), 0) < 0) { 212db59c1a6Smillert warn("fseek"); 213df930be7Sderaadt panic("temporary file seek"); 214df930be7Sderaadt } 215df930be7Sderaadt return(itf); 216df930be7Sderaadt } 217df930be7Sderaadt 218df930be7Sderaadt /* 219df930be7Sderaadt * Take the data out of the passed ghost file and toss it into 220df930be7Sderaadt * a dynamically allocated message structure. 221df930be7Sderaadt */ 222df930be7Sderaadt void 223db59c1a6Smillert makemessage(f, omsgCount) 224df930be7Sderaadt FILE *f; 225db59c1a6Smillert int omsgCount; 226df930be7Sderaadt { 227f0e43013Smillert register size_t size = (msgCount + 1) * sizeof(struct message); 228df930be7Sderaadt 229db59c1a6Smillert if (omsgCount) { 230f0e43013Smillert message = (struct message *)realloc(message, size); 231db59c1a6Smillert if (message == 0) 232db59c1a6Smillert panic("Insufficient memory for %d messages\n", msgCount); 233db59c1a6Smillert } else { 234df930be7Sderaadt if (message != 0) 235f0e43013Smillert (void)free(message); 236f0e43013Smillert if ((message = (struct message *)malloc(size)) == 0) 237df930be7Sderaadt panic("Insufficient memory for %d messages", msgCount); 238df930be7Sderaadt dot = message; 239db59c1a6Smillert } 240db59c1a6Smillert size -= (omsgCount + 1) * sizeof(struct message); 241df930be7Sderaadt fflush(f); 242db59c1a6Smillert (void)lseek(fileno(f), (off_t)sizeof(*message), 0); 243db59c1a6Smillert if (read(fileno(f), (void *) &message[omsgCount], size) != size) 244df930be7Sderaadt panic("Message temporary file corrupted"); 245df930be7Sderaadt message[msgCount].m_size = 0; 246df930be7Sderaadt message[msgCount].m_lines = 0; 247db59c1a6Smillert (void)Fclose(f); 248df930be7Sderaadt } 249df930be7Sderaadt 250df930be7Sderaadt /* 251df930be7Sderaadt * Append the passed message descriptor onto the temp file. 252df930be7Sderaadt * If the write fails, return 1, else 0 253df930be7Sderaadt */ 254df930be7Sderaadt int 255df930be7Sderaadt append(mp, f) 256df930be7Sderaadt struct message *mp; 257df930be7Sderaadt FILE *f; 258df930be7Sderaadt { 259db59c1a6Smillert return(fwrite((char *) mp, sizeof(*mp), 1, f) != 1); 260df930be7Sderaadt } 261df930be7Sderaadt 262df930be7Sderaadt /* 263df930be7Sderaadt * Delete a file, but only if the file is a plain file. 264df930be7Sderaadt */ 265df930be7Sderaadt int 266df930be7Sderaadt rm(name) 267df930be7Sderaadt char *name; 268df930be7Sderaadt { 269df930be7Sderaadt struct stat sb; 270df930be7Sderaadt 271df930be7Sderaadt if (stat(name, &sb) < 0) 272df930be7Sderaadt return(-1); 273df930be7Sderaadt if (!S_ISREG(sb.st_mode)) { 274df930be7Sderaadt errno = EISDIR; 275df930be7Sderaadt return(-1); 276df930be7Sderaadt } 277df930be7Sderaadt return(unlink(name)); 278df930be7Sderaadt } 279df930be7Sderaadt 280df930be7Sderaadt static int sigdepth; /* depth of holdsigs() */ 2817eb34045Sderaadt static sigset_t nset, oset; 282df930be7Sderaadt /* 283df930be7Sderaadt * Hold signals SIGHUP, SIGINT, and SIGQUIT. 284df930be7Sderaadt */ 285df930be7Sderaadt void 286df930be7Sderaadt holdsigs() 287df930be7Sderaadt { 288df930be7Sderaadt 2897eb34045Sderaadt if (sigdepth++ == 0) { 2907eb34045Sderaadt sigemptyset(&nset); 2917eb34045Sderaadt sigaddset(&nset, SIGHUP); 2927eb34045Sderaadt sigaddset(&nset, SIGINT); 2937eb34045Sderaadt sigaddset(&nset, SIGQUIT); 2947eb34045Sderaadt sigprocmask(SIG_BLOCK, &nset, &oset); 2957eb34045Sderaadt } 296df930be7Sderaadt } 297df930be7Sderaadt 298df930be7Sderaadt /* 299df930be7Sderaadt * Release signals SIGHUP, SIGINT, and SIGQUIT. 300df930be7Sderaadt */ 301df930be7Sderaadt void 302df930be7Sderaadt relsesigs() 303df930be7Sderaadt { 304df930be7Sderaadt 305df930be7Sderaadt if (--sigdepth == 0) 3067eb34045Sderaadt sigprocmask(SIG_SETMASK, &oset, NULL); 307df930be7Sderaadt } 308df930be7Sderaadt 309df930be7Sderaadt /* 310df930be7Sderaadt * Determine the size of the file possessed by 311df930be7Sderaadt * the passed buffer. 312df930be7Sderaadt */ 313df930be7Sderaadt off_t 314df930be7Sderaadt fsize(iob) 315df930be7Sderaadt FILE *iob; 316df930be7Sderaadt { 317df930be7Sderaadt struct stat sbuf; 318df930be7Sderaadt 319df930be7Sderaadt if (fstat(fileno(iob), &sbuf) < 0) 320db59c1a6Smillert return(0); 321db59c1a6Smillert return(sbuf.st_size); 322df930be7Sderaadt } 323df930be7Sderaadt 324df930be7Sderaadt /* 325df930be7Sderaadt * Evaluate the string given as a new mailbox name. 326df930be7Sderaadt * Supported meta characters: 327df930be7Sderaadt * % for my system mail box 328df930be7Sderaadt * %user for user's system mail box 329df930be7Sderaadt * # for previous file 330df930be7Sderaadt * & invoker's mbox file 331df930be7Sderaadt * +file file in folder directory 332df930be7Sderaadt * any shell meta character 333df930be7Sderaadt * Return the file name as a dynamic string. 334df930be7Sderaadt */ 335df930be7Sderaadt char * 336df930be7Sderaadt expand(name) 337df930be7Sderaadt register char *name; 338df930be7Sderaadt { 339df930be7Sderaadt char xname[PATHSIZE]; 340df930be7Sderaadt char cmdbuf[PATHSIZE]; /* also used for file names */ 341df930be7Sderaadt register int pid, l; 342df930be7Sderaadt register char *cp, *shell; 343df930be7Sderaadt int pivec[2]; 344df930be7Sderaadt struct stat sbuf; 345df930be7Sderaadt extern union wait wait_status; 346df930be7Sderaadt 347df930be7Sderaadt /* 348df930be7Sderaadt * The order of evaluation is "%" and "#" expand into constants. 349df930be7Sderaadt * "&" can expand into "+". "+" can expand into shell meta characters. 350df930be7Sderaadt * Shell meta characters expand into constants. 351df930be7Sderaadt * This way, we make no recursive expansion. 352df930be7Sderaadt */ 353df930be7Sderaadt switch (*name) { 354df930be7Sderaadt case '%': 355db59c1a6Smillert findmail(name[1] ? name + 1 : myname, xname, sizeof(xname)); 356db59c1a6Smillert return(savestr(xname)); 357df930be7Sderaadt case '#': 358df930be7Sderaadt if (name[1] != 0) 359df930be7Sderaadt break; 360df930be7Sderaadt if (prevfile[0] == 0) { 361db59c1a6Smillert puts("No previous file"); 362c318c72bSmillert return(NULL); 363df930be7Sderaadt } 364db59c1a6Smillert return(savestr(prevfile)); 365df930be7Sderaadt case '&': 366c318c72bSmillert if (name[1] == 0 && (name = value("MBOX")) == NULL) 367df930be7Sderaadt name = "~/mbox"; 368df930be7Sderaadt /* fall through */ 369df930be7Sderaadt } 370db59c1a6Smillert if (name[0] == '+' && getfold(cmdbuf, sizeof(cmdbuf)) >= 0) { 371*0ecc72fcSmillert (void)snprintf(xname, sizeof(xname), "%s/%s", cmdbuf, name + 1); 372df930be7Sderaadt name = savestr(xname); 373df930be7Sderaadt } 374df930be7Sderaadt /* catch the most common shell meta character */ 375df930be7Sderaadt if (name[0] == '~' && (name[1] == '/' || name[1] == '\0')) { 376*0ecc72fcSmillert (void)snprintf(xname, sizeof(xname), "%s%s", homedir, name + 1); 377df930be7Sderaadt name = savestr(xname); 378df930be7Sderaadt } 379df930be7Sderaadt if (!anyof(name, "~{[*?$`'\"\\")) 380db59c1a6Smillert return(name); 381df930be7Sderaadt if (pipe(pivec) < 0) { 382db59c1a6Smillert warn("pipe"); 383db59c1a6Smillert return(name); 384df930be7Sderaadt } 385*0ecc72fcSmillert (void)snprintf(cmdbuf, sizeof(cmdbuf), "echo %s", name); 386c318c72bSmillert if ((shell = value("SHELL")) == NULL) 387df930be7Sderaadt shell = _PATH_CSHELL; 388c318c72bSmillert pid = start_command(shell, 0, -1, pivec[1], "-c", cmdbuf, NULL); 389df930be7Sderaadt if (pid < 0) { 390db59c1a6Smillert (void)close(pivec[0]); 391db59c1a6Smillert (void)close(pivec[1]); 392c318c72bSmillert return(NULL); 393df930be7Sderaadt } 394db59c1a6Smillert (void)close(pivec[1]); 395db59c1a6Smillert l = read(pivec[0], xname, PATHSIZE); 396db59c1a6Smillert (void)close(pivec[0]); 397df930be7Sderaadt if (wait_child(pid) < 0 && wait_status.w_termsig != SIGPIPE) { 398df930be7Sderaadt fprintf(stderr, "\"%s\": Expansion failed.\n", name); 399c318c72bSmillert return(NULL); 400df930be7Sderaadt } 401df930be7Sderaadt if (l < 0) { 402db59c1a6Smillert warn("read"); 403c318c72bSmillert return(NULL); 404df930be7Sderaadt } 405df930be7Sderaadt if (l == 0) { 406df930be7Sderaadt fprintf(stderr, "\"%s\": No match.\n", name); 407c318c72bSmillert return(NULL); 408df930be7Sderaadt } 409db59c1a6Smillert if (l == PATHSIZE) { 410df930be7Sderaadt fprintf(stderr, "\"%s\": Expansion buffer overflow.\n", name); 411c318c72bSmillert return(NULL); 412df930be7Sderaadt } 413db59c1a6Smillert xname[l] = '\0'; 414df930be7Sderaadt for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--) 415df930be7Sderaadt ; 416df930be7Sderaadt cp[1] = '\0'; 417180acc8fSmillert if (strchr(xname, ' ') && stat(xname, &sbuf) < 0) { 418df930be7Sderaadt fprintf(stderr, "\"%s\": Ambiguous.\n", name); 419c318c72bSmillert return(NULL); 420df930be7Sderaadt } 421db59c1a6Smillert return(savestr(xname)); 422df930be7Sderaadt } 423df930be7Sderaadt 424df930be7Sderaadt /* 425df930be7Sderaadt * Determine the current folder directory name. 426df930be7Sderaadt */ 427df930be7Sderaadt int 428c32a3250Sderaadt getfold(name, namelen) 429df930be7Sderaadt char *name; 430c32a3250Sderaadt int namelen; 431df930be7Sderaadt { 432df930be7Sderaadt char *folder; 433df930be7Sderaadt 434c318c72bSmillert if ((folder = value("folder")) == NULL) 435df930be7Sderaadt return(-1); 436c32a3250Sderaadt if (*folder == '/') { 437c32a3250Sderaadt strncpy(name, folder, namelen-1); 438c32a3250Sderaadt name[namelen-1] = '\0'; 439c32a3250Sderaadt } else 440*0ecc72fcSmillert (void)snprintf(name, namelen, "%s/%s", homedir, folder); 441df930be7Sderaadt return(0); 442df930be7Sderaadt } 443df930be7Sderaadt 444df930be7Sderaadt /* 445df930be7Sderaadt * Return the name of the dead.letter file. 446df930be7Sderaadt */ 447df930be7Sderaadt char * 448df930be7Sderaadt getdeadletter() 449df930be7Sderaadt { 450df930be7Sderaadt register char *cp; 451df930be7Sderaadt 452c318c72bSmillert if ((cp = value("DEAD")) == NULL || (cp = expand(cp)) == NULL) 453df930be7Sderaadt cp = expand("~/dead.letter"); 454df930be7Sderaadt else if (*cp != '/') { 455df930be7Sderaadt char buf[PATHSIZE]; 456df930be7Sderaadt 457db59c1a6Smillert (void)snprintf(buf, sizeof(buf), "~/%s", cp); 458df930be7Sderaadt cp = expand(buf); 459df930be7Sderaadt } 460db59c1a6Smillert return(cp); 461df930be7Sderaadt } 462