1*3aaa63ebSderaadt /* $OpenBSD: fio.c,v 1.38 2019/06/28 13:35:01 deraadt 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. 16f75387cbSmillert * 3. Neither the name of the University nor the names of its contributors 17df930be7Sderaadt * may be used to endorse or promote products derived from this software 18df930be7Sderaadt * without specific prior written permission. 19df930be7Sderaadt * 20df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30df930be7Sderaadt * SUCH DAMAGE. 31df930be7Sderaadt */ 32df930be7Sderaadt 33df930be7Sderaadt #include "rcv.h" 34df930be7Sderaadt 35df930be7Sderaadt #include <unistd.h> 36df930be7Sderaadt #include <paths.h> 37df930be7Sderaadt #include <errno.h> 3832cc11aaSmillert #include <glob.h> 39df930be7Sderaadt #include "extern.h" 40df930be7Sderaadt 41df930be7Sderaadt /* 42df930be7Sderaadt * Mail -- a mail program 43df930be7Sderaadt * 44df930be7Sderaadt * File I/O. 45df930be7Sderaadt */ 46df930be7Sderaadt 477f56ba93Smillert static volatile sig_atomic_t fiosignal; 487f56ba93Smillert 49df930be7Sderaadt /* 50ca8b07b0Smillert * Wrapper for read() to catch EINTR. 51ca8b07b0Smillert */ 52d33b10b9Sderaadt static ssize_t 534a9caef2Smillert myread(int fd, char *buf, int len) 54ca8b07b0Smillert { 55ca8b07b0Smillert ssize_t nread; 56ca8b07b0Smillert 57ca8b07b0Smillert while ((nread = read(fd, buf, len)) == -1 && errno == EINTR) 58ca8b07b0Smillert ; 59ca8b07b0Smillert return(nread); 60ca8b07b0Smillert } 61ca8b07b0Smillert 62ca8b07b0Smillert /* 63df930be7Sderaadt * Set up the input pointers while copying the mail file into /tmp. 64df930be7Sderaadt */ 65df930be7Sderaadt void 664a9caef2Smillert setptr(FILE *ibuf, off_t offset) 67df930be7Sderaadt { 6836999bedSmillert int c, count; 6936999bedSmillert char *cp, *cp2; 70df930be7Sderaadt struct message this; 71df930be7Sderaadt FILE *mestmp; 7236999bedSmillert int maybe, inhead, omsgCount; 73c32a3250Sderaadt char linebuf[LINESIZE], pathbuf[PATHSIZE]; 74df930be7Sderaadt 75df930be7Sderaadt /* Get temporary file. */ 76db59c1a6Smillert (void)snprintf(pathbuf, sizeof(pathbuf), "%s/mail.XXXXXXXXXX", tmpdir); 77db59c1a6Smillert if ((c = mkstemp(pathbuf)) == -1 || (mestmp = Fdopen(c, "r+")) == NULL) 78db59c1a6Smillert err(1, "can't open %s", pathbuf); 790ecc72fcSmillert (void)rm(pathbuf); 80df930be7Sderaadt 81db59c1a6Smillert if (offset == 0) { 82df930be7Sderaadt msgCount = 0; 83db59c1a6Smillert } else { 84db59c1a6Smillert /* Seek into the file to get to the new messages */ 85a52c79cdStobias (void)fseeko(ibuf, offset, SEEK_SET); 86db59c1a6Smillert /* 87db59c1a6Smillert * We need to make "offset" a pointer to the end of 88db59c1a6Smillert * the temp file that has the copy of the mail file. 89db59c1a6Smillert * If any messages have been edited, this will be 90db59c1a6Smillert * different from the offset into the mail file. 91db59c1a6Smillert */ 922a187660Sderaadt (void)fseeko(otf, (off_t)0, SEEK_END); 93db59c1a6Smillert offset = ftell(otf); 94db59c1a6Smillert } 95db59c1a6Smillert omsgCount = msgCount; 96df930be7Sderaadt maybe = 1; 97df930be7Sderaadt inhead = 0; 98df930be7Sderaadt this.m_flag = MUSED|MNEW; 99df930be7Sderaadt this.m_size = 0; 100df930be7Sderaadt this.m_lines = 0; 101df930be7Sderaadt this.m_block = 0; 102df930be7Sderaadt this.m_offset = 0; 103df930be7Sderaadt for (;;) { 104db59c1a6Smillert if (fgets(linebuf, sizeof(linebuf), ibuf) == NULL) { 105db59c1a6Smillert if (append(&this, mestmp)) 106db59c1a6Smillert err(1, "temporary file"); 107db59c1a6Smillert makemessage(mestmp, omsgCount); 108df930be7Sderaadt return; 109df930be7Sderaadt } 110df930be7Sderaadt count = strlen(linebuf); 1117f7d0dfbSmillert /* 1127f7d0dfbSmillert * Transforms lines ending in <CR><LF> to just <LF>. 1137f7d0dfbSmillert * This allows mail to be able to read Eudora mailboxes 1147f7d0dfbSmillert * that reside on a DOS partition. 1157f7d0dfbSmillert */ 1167f7d0dfbSmillert if (count >= 2 && linebuf[count-1] == '\n' && 117ad26b615Sray linebuf[count - 2] == '\r') { 118ad26b615Sray linebuf[count - 2] = '\n'; 119ad26b615Sray linebuf[count - 1] = '\0'; 120ad26b615Sray count--; 121ad26b615Sray } 1227f7d0dfbSmillert 123db59c1a6Smillert (void)fwrite(linebuf, sizeof(*linebuf), count, otf); 124db59c1a6Smillert if (ferror(otf)) 12564d7140cSmartynas err(1, "%s", pathbuf); 12604bc0233Schl if (count && linebuf[count - 1] == '\n') 127db59c1a6Smillert linebuf[count - 1] = '\0'; 128df930be7Sderaadt if (maybe && linebuf[0] == 'F' && ishead(linebuf)) { 129df930be7Sderaadt msgCount++; 130db59c1a6Smillert if (append(&this, mestmp)) 131db59c1a6Smillert err(1, "temporary file"); 132df930be7Sderaadt this.m_flag = MUSED|MNEW; 133df930be7Sderaadt this.m_size = 0; 134df930be7Sderaadt this.m_lines = 0; 135df930be7Sderaadt this.m_block = blockof(offset); 136df930be7Sderaadt this.m_offset = offsetof(offset); 137df930be7Sderaadt inhead = 1; 138df930be7Sderaadt } else if (linebuf[0] == 0) { 139df930be7Sderaadt inhead = 0; 140df930be7Sderaadt } else if (inhead) { 141df930be7Sderaadt for (cp = linebuf, cp2 = "status";; cp++) { 142085f113bSokan if ((c = (unsigned char)*cp2++) == 0) { 143be435c80Smmcc while (isspace((unsigned char)*cp++)) 144df930be7Sderaadt ; 145df930be7Sderaadt if (cp[-1] != ':') 146df930be7Sderaadt break; 147085f113bSokan while ((c = (unsigned char)*cp++) != '\0') 148df930be7Sderaadt if (c == 'R') 149df930be7Sderaadt this.m_flag |= MREAD; 150df930be7Sderaadt else if (c == 'O') 151df930be7Sderaadt this.m_flag &= ~MNEW; 152df930be7Sderaadt inhead = 0; 153df930be7Sderaadt break; 154df930be7Sderaadt } 155df930be7Sderaadt if (*cp != c && *cp != toupper(c)) 156df930be7Sderaadt break; 157df930be7Sderaadt } 158df930be7Sderaadt } 159df930be7Sderaadt offset += count; 160df930be7Sderaadt this.m_size += count; 161df930be7Sderaadt this.m_lines++; 162df930be7Sderaadt maybe = linebuf[0] == 0; 163df930be7Sderaadt } 164df930be7Sderaadt } 165df930be7Sderaadt 166df930be7Sderaadt /* 167df930be7Sderaadt * Drop the passed line onto the passed output buffer. 168df930be7Sderaadt * If a write error occurs, return -1, else the count of 169db59c1a6Smillert * characters written, including the newline if requested. 170df930be7Sderaadt */ 171df930be7Sderaadt int 1724a9caef2Smillert putline(FILE *obuf, char *linebuf, int outlf) 173df930be7Sderaadt { 17436999bedSmillert int c; 175df930be7Sderaadt 176df930be7Sderaadt c = strlen(linebuf); 177db59c1a6Smillert (void)fwrite(linebuf, sizeof(*linebuf), c, obuf); 178db59c1a6Smillert if (outlf) { 179df930be7Sderaadt (void)putc('\n', obuf); 180db59c1a6Smillert c++; 181db59c1a6Smillert } 182df930be7Sderaadt if (ferror(obuf)) 183df930be7Sderaadt return(-1); 184db59c1a6Smillert return(c); 185df930be7Sderaadt } 186df930be7Sderaadt 187df930be7Sderaadt /* 188df930be7Sderaadt * Read up a line from the specified input into the line 189df930be7Sderaadt * buffer. Return the number of characters read. Do not 1907f7d0dfbSmillert * include the newline (or carriage return) at the end. 191df930be7Sderaadt */ 192df930be7Sderaadt int 1934a9caef2Smillert readline(FILE *ibuf, char *linebuf, int linesize, int *signo) 194df930be7Sderaadt { 1957f56ba93Smillert struct sigaction act; 1967f56ba93Smillert struct sigaction savetstp; 1977f56ba93Smillert struct sigaction savettou; 1987f56ba93Smillert struct sigaction savettin; 1997f56ba93Smillert struct sigaction saveint; 2007f56ba93Smillert struct sigaction savehup; 2017f56ba93Smillert sigset_t oset; 20236999bedSmillert int n; 203df930be7Sderaadt 2047f56ba93Smillert /* 2057f56ba93Smillert * Setup signal handlers if the caller asked us to catch signals. 2067f56ba93Smillert * Note that we do not restart system calls since we need the 20765389327Skrw * read to be interruptible. 2087f56ba93Smillert */ 2097f56ba93Smillert if (signo) { 2107f56ba93Smillert fiosignal = 0; 2117f56ba93Smillert sigemptyset(&act.sa_mask); 2127f56ba93Smillert act.sa_flags = 0; 2137f56ba93Smillert act.sa_handler = fioint; 2147f56ba93Smillert if (sigaction(SIGINT, NULL, &saveint) == 0 && 2157f56ba93Smillert saveint.sa_handler != SIG_IGN) { 2167f56ba93Smillert (void)sigaction(SIGINT, &act, &saveint); 2177f56ba93Smillert (void)sigprocmask(SIG_UNBLOCK, &intset, &oset); 2187f56ba93Smillert } 2197f56ba93Smillert if (sigaction(SIGHUP, NULL, &savehup) == 0 && 2207f56ba93Smillert savehup.sa_handler != SIG_IGN) 2217f56ba93Smillert (void)sigaction(SIGHUP, &act, &savehup); 2227f56ba93Smillert (void)sigaction(SIGTSTP, &act, &savetstp); 2237f56ba93Smillert (void)sigaction(SIGTTOU, &act, &savettou); 2247f56ba93Smillert (void)sigaction(SIGTTIN, &act, &savettin); 2257f56ba93Smillert } 226db59c1a6Smillert 2277f56ba93Smillert clearerr(ibuf); 2287f56ba93Smillert if (fgets(linebuf, linesize, ibuf) == NULL) { 2297f56ba93Smillert if (ferror(ibuf)) 2307f56ba93Smillert clearerr(ibuf); 2317f56ba93Smillert n = -1; 2327f56ba93Smillert } else { 233df930be7Sderaadt n = strlen(linebuf); 234df930be7Sderaadt if (n > 0 && linebuf[n - 1] == '\n') 235df930be7Sderaadt linebuf[--n] = '\0'; 2367f7d0dfbSmillert if (n > 0 && linebuf[n - 1] == '\r') 2377f7d0dfbSmillert linebuf[--n] = '\0'; 2387f56ba93Smillert } 2397f56ba93Smillert 2407f56ba93Smillert if (signo) { 2417f56ba93Smillert (void)sigprocmask(SIG_SETMASK, &oset, NULL); 2427f56ba93Smillert (void)sigaction(SIGINT, &saveint, NULL); 2437f56ba93Smillert (void)sigaction(SIGHUP, &savehup, NULL); 2447f56ba93Smillert (void)sigaction(SIGTSTP, &savetstp, NULL); 2457f56ba93Smillert (void)sigaction(SIGTTOU, &savettou, NULL); 2467f56ba93Smillert (void)sigaction(SIGTTIN, &savettin, NULL); 2477f56ba93Smillert *signo = fiosignal; 2487f56ba93Smillert } 2497f56ba93Smillert 250db59c1a6Smillert return(n); 251df930be7Sderaadt } 252df930be7Sderaadt 253df930be7Sderaadt /* 254df930be7Sderaadt * Return a file buffer all ready to read up the 255df930be7Sderaadt * passed message pointer. 256df930be7Sderaadt */ 257df930be7Sderaadt FILE * 2584a9caef2Smillert setinput(struct message *mp) 259df930be7Sderaadt { 260df930be7Sderaadt 261df930be7Sderaadt fflush(otf); 262a52c79cdStobias if (fseek(itf, (long)positionof(mp->m_block, mp->m_offset), SEEK_SET) 263*3aaa63ebSderaadt == -1) 26436999bedSmillert err(1, "fseek"); 265df930be7Sderaadt return(itf); 266df930be7Sderaadt } 267df930be7Sderaadt 268df930be7Sderaadt /* 269df930be7Sderaadt * Take the data out of the passed ghost file and toss it into 270df930be7Sderaadt * a dynamically allocated message structure. 271df930be7Sderaadt */ 272df930be7Sderaadt void 2734a9caef2Smillert makemessage(FILE *f, int omsgCount) 274df930be7Sderaadt { 2753462a97cSmillert size_t size; 2763462a97cSmillert struct message *nmessage; 277df930be7Sderaadt 2783462a97cSmillert size = (msgCount + 1) * sizeof(struct message); 279cd9ca5b7Smmcc nmessage = realloc(message, size); 2803462a97cSmillert if (nmessage == 0) 281cd9ca5b7Smmcc err(1, "realloc"); 2823462a97cSmillert if (omsgCount == 0 || message == NULL) 2833462a97cSmillert dot = nmessage; 2843462a97cSmillert else 2853462a97cSmillert dot = nmessage + (dot - message); 2863462a97cSmillert message = nmessage; 287db59c1a6Smillert size -= (omsgCount + 1) * sizeof(struct message); 288df930be7Sderaadt fflush(f); 28985c482d6Sderaadt (void)lseek(fileno(f), (off_t)sizeof(*message), SEEK_SET); 290ca8b07b0Smillert if (myread(fileno(f), (void *) &message[omsgCount], size) != size) 29136999bedSmillert errx(1, "Message temporary file corrupted"); 292df930be7Sderaadt message[msgCount].m_size = 0; 293df930be7Sderaadt message[msgCount].m_lines = 0; 294db59c1a6Smillert (void)Fclose(f); 295df930be7Sderaadt } 296df930be7Sderaadt 297df930be7Sderaadt /* 298df930be7Sderaadt * Append the passed message descriptor onto the temp file. 299df930be7Sderaadt * If the write fails, return 1, else 0 300df930be7Sderaadt */ 301df930be7Sderaadt int 3024a9caef2Smillert append(struct message *mp, FILE *f) 303df930be7Sderaadt { 3044a9caef2Smillert 305db59c1a6Smillert return(fwrite((char *) mp, sizeof(*mp), 1, f) != 1); 306df930be7Sderaadt } 307df930be7Sderaadt 308df930be7Sderaadt /* 3090b426e12Smillert * Delete or truncate a file, but only if the file is a plain file. 310df930be7Sderaadt */ 311df930be7Sderaadt int 3124a9caef2Smillert rm(char *name) 313df930be7Sderaadt { 314df930be7Sderaadt struct stat sb; 315df930be7Sderaadt 316*3aaa63ebSderaadt if (stat(name, &sb) == -1) 317df930be7Sderaadt return(-1); 318df930be7Sderaadt if (!S_ISREG(sb.st_mode)) { 319df930be7Sderaadt errno = EISDIR; 320df930be7Sderaadt return(-1); 321df930be7Sderaadt } 3220b426e12Smillert if (unlink(name) == -1) { 3230b426e12Smillert if (errno == EPERM) 3242a187660Sderaadt return(truncate(name, (off_t)0)); 3250b426e12Smillert else 3260b426e12Smillert return(-1); 3270b426e12Smillert } 3280b426e12Smillert return(0); 329df930be7Sderaadt } 330df930be7Sderaadt 331df930be7Sderaadt static int sigdepth; /* depth of holdsigs() */ 3327eb34045Sderaadt static sigset_t nset, oset; 333df930be7Sderaadt /* 334df930be7Sderaadt * Hold signals SIGHUP, SIGINT, and SIGQUIT. 335df930be7Sderaadt */ 336df930be7Sderaadt void 3374a9caef2Smillert holdsigs(void) 338df930be7Sderaadt { 339df930be7Sderaadt 3407eb34045Sderaadt if (sigdepth++ == 0) { 3417eb34045Sderaadt sigemptyset(&nset); 3427eb34045Sderaadt sigaddset(&nset, SIGHUP); 3437eb34045Sderaadt sigaddset(&nset, SIGINT); 3447eb34045Sderaadt sigaddset(&nset, SIGQUIT); 3457eb34045Sderaadt sigprocmask(SIG_BLOCK, &nset, &oset); 3467eb34045Sderaadt } 347df930be7Sderaadt } 348df930be7Sderaadt 349df930be7Sderaadt /* 350df930be7Sderaadt * Release signals SIGHUP, SIGINT, and SIGQUIT. 351df930be7Sderaadt */ 352df930be7Sderaadt void 3534a9caef2Smillert relsesigs(void) 354df930be7Sderaadt { 355df930be7Sderaadt 356df930be7Sderaadt if (--sigdepth == 0) 3577eb34045Sderaadt sigprocmask(SIG_SETMASK, &oset, NULL); 358df930be7Sderaadt } 359df930be7Sderaadt 360df930be7Sderaadt /* 3617f56ba93Smillert * Unblock and ignore a signal 3627f56ba93Smillert */ 3637f56ba93Smillert int 3644a9caef2Smillert ignoresig(int sig, struct sigaction *oact, sigset_t *oset) 3657f56ba93Smillert { 3667f56ba93Smillert struct sigaction act; 3677f56ba93Smillert sigset_t nset; 3687f56ba93Smillert int error; 3697f56ba93Smillert 3707f56ba93Smillert sigemptyset(&act.sa_mask); 3717f56ba93Smillert act.sa_flags = SA_RESTART; 3727f56ba93Smillert act.sa_handler = SIG_IGN; 3737f56ba93Smillert error = sigaction(sig, &act, oact); 3747f56ba93Smillert 3757f56ba93Smillert if (error == 0) { 3767f56ba93Smillert sigemptyset(&nset); 3777f56ba93Smillert sigaddset(&nset, sig); 3787f56ba93Smillert (void)sigprocmask(SIG_UNBLOCK, &nset, oset); 3797f56ba93Smillert } else if (oset != NULL) 3807f56ba93Smillert (void)sigprocmask(SIG_BLOCK, NULL, oset); 3817f56ba93Smillert 3827f56ba93Smillert return(error); 3837f56ba93Smillert } 3847f56ba93Smillert 3857f56ba93Smillert /* 386df930be7Sderaadt * Determine the size of the file possessed by 387df930be7Sderaadt * the passed buffer. 388df930be7Sderaadt */ 389df930be7Sderaadt off_t 3904a9caef2Smillert fsize(FILE *iob) 391df930be7Sderaadt { 392df930be7Sderaadt struct stat sbuf; 393df930be7Sderaadt 394*3aaa63ebSderaadt if (fstat(fileno(iob), &sbuf) == -1) 395db59c1a6Smillert return(0); 396db59c1a6Smillert return(sbuf.st_size); 397df930be7Sderaadt } 398df930be7Sderaadt 399df930be7Sderaadt /* 400df930be7Sderaadt * Evaluate the string given as a new mailbox name. 401df930be7Sderaadt * Supported meta characters: 402df930be7Sderaadt * % for my system mail box 403df930be7Sderaadt * %user for user's system mail box 404df930be7Sderaadt * # for previous file 405df930be7Sderaadt * & invoker's mbox file 406df930be7Sderaadt * +file file in folder directory 407df930be7Sderaadt * any shell meta character 408df930be7Sderaadt * Return the file name as a dynamic string. 409df930be7Sderaadt */ 410df930be7Sderaadt char * 4114a9caef2Smillert expand(char *name) 412df930be7Sderaadt { 41332cc11aaSmillert const int flags = GLOB_BRACE|GLOB_TILDE|GLOB_NOSORT; 414df930be7Sderaadt char xname[PATHSIZE]; 415df930be7Sderaadt char cmdbuf[PATHSIZE]; /* also used for file names */ 41632cc11aaSmillert char *match = NULL; 41732cc11aaSmillert glob_t names; 418df930be7Sderaadt 419df930be7Sderaadt /* 420df930be7Sderaadt * The order of evaluation is "%" and "#" expand into constants. 421df930be7Sderaadt * "&" can expand into "+". "+" can expand into shell meta characters. 422df930be7Sderaadt * Shell meta characters expand into constants. 423df930be7Sderaadt * This way, we make no recursive expansion. 424df930be7Sderaadt */ 425df930be7Sderaadt switch (*name) { 426df930be7Sderaadt case '%': 427db59c1a6Smillert findmail(name[1] ? name + 1 : myname, xname, sizeof(xname)); 428db59c1a6Smillert return(savestr(xname)); 429df930be7Sderaadt case '#': 430df930be7Sderaadt if (name[1] != 0) 431df930be7Sderaadt break; 432df930be7Sderaadt if (prevfile[0] == 0) { 433db59c1a6Smillert puts("No previous file"); 434c318c72bSmillert return(NULL); 435df930be7Sderaadt } 436db59c1a6Smillert return(savestr(prevfile)); 437df930be7Sderaadt case '&': 438c318c72bSmillert if (name[1] == 0 && (name = value("MBOX")) == NULL) 439df930be7Sderaadt name = "~/mbox"; 440df930be7Sderaadt /* fall through */ 441df930be7Sderaadt } 442db59c1a6Smillert if (name[0] == '+' && getfold(cmdbuf, sizeof(cmdbuf)) >= 0) { 4430ecc72fcSmillert (void)snprintf(xname, sizeof(xname), "%s/%s", cmdbuf, name + 1); 444df930be7Sderaadt name = savestr(xname); 445df930be7Sderaadt } 446df930be7Sderaadt /* catch the most common shell meta character */ 4475c85bdadSmillert if (name[0] == '~' && homedir && (name[1] == '/' || name[1] == '\0')) { 4480ecc72fcSmillert (void)snprintf(xname, sizeof(xname), "%s%s", homedir, name + 1); 449df930be7Sderaadt name = savestr(xname); 450df930be7Sderaadt } 45132cc11aaSmillert if (strpbrk(name, "~{[*?\\") == NULL) 45232cc11aaSmillert return(savestr(name)); 45332cc11aaSmillert 45432cc11aaSmillert /* XXX - does not expand enviroment variables. */ 45532cc11aaSmillert switch (glob(name, flags, NULL, &names)) { 45632cc11aaSmillert case 0: 45732cc11aaSmillert if (names.gl_pathc == 1) 45832cc11aaSmillert match = savestr(names.gl_pathv[0]); 45932cc11aaSmillert else 460df930be7Sderaadt fprintf(stderr, "\"%s\": Ambiguous.\n", name); 46132cc11aaSmillert break; 46232cc11aaSmillert case GLOB_NOSPACE: 46332cc11aaSmillert fprintf(stderr, "\"%s\": Out of memory.\n", name); 46432cc11aaSmillert break; 46532cc11aaSmillert case GLOB_NOMATCH: 46632cc11aaSmillert fprintf(stderr, "\"%s\": No match.\n", name); 46732cc11aaSmillert break; 46832cc11aaSmillert default: 46932cc11aaSmillert fprintf(stderr, "\"%s\": Expansion failed.\n", name); 47032cc11aaSmillert break; 471df930be7Sderaadt } 47232cc11aaSmillert globfree(&names); 47332cc11aaSmillert return(match); 474df930be7Sderaadt } 475df930be7Sderaadt 476df930be7Sderaadt /* 477df930be7Sderaadt * Determine the current folder directory name. 478df930be7Sderaadt */ 479df930be7Sderaadt int 4804a9caef2Smillert getfold(char *name, int namelen) 481df930be7Sderaadt { 482df930be7Sderaadt char *folder; 483df930be7Sderaadt 484c318c72bSmillert if ((folder = value("folder")) == NULL) 485df930be7Sderaadt return(-1); 4864a9caef2Smillert if (*folder == '/') 4874a9caef2Smillert strlcpy(name, folder, namelen); 4884a9caef2Smillert else 4895c85bdadSmillert (void)snprintf(name, namelen, "%s/%s", homedir ? homedir : ".", 4905c85bdadSmillert folder); 491df930be7Sderaadt return(0); 492df930be7Sderaadt } 493df930be7Sderaadt 494df930be7Sderaadt /* 495df930be7Sderaadt * Return the name of the dead.letter file. 496df930be7Sderaadt */ 497df930be7Sderaadt char * 4984a9caef2Smillert getdeadletter(void) 499df930be7Sderaadt { 50036999bedSmillert char *cp; 501df930be7Sderaadt 502c318c72bSmillert if ((cp = value("DEAD")) == NULL || (cp = expand(cp)) == NULL) 503df930be7Sderaadt cp = expand("~/dead.letter"); 504df930be7Sderaadt else if (*cp != '/') { 505df930be7Sderaadt char buf[PATHSIZE]; 506df930be7Sderaadt 507db59c1a6Smillert (void)snprintf(buf, sizeof(buf), "~/%s", cp); 508df930be7Sderaadt cp = expand(buf); 509df930be7Sderaadt } 510db59c1a6Smillert return(cp); 511df930be7Sderaadt } 5127f56ba93Smillert 5137f56ba93Smillert /* 5147f56ba93Smillert * Signal handler used by readline() to catch SIGINT, SIGHUP, SIGTSTP, 5157f56ba93Smillert * SIGTTOU, SIGTTIN. 5167f56ba93Smillert */ 5177f56ba93Smillert void 5184a9caef2Smillert fioint(int s) 5197f56ba93Smillert { 5207f56ba93Smillert 5217f56ba93Smillert fiosignal = s; 5227f56ba93Smillert } 523