/* $OpenBSD: sort.c,v 1.24 2004/09/14 22:57:21 deraadt Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Peter McIlroy. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)sort.c 8.1 (Berkeley) 6/6/93"; #else static char rcsid[] = "$OpenBSD: sort.c,v 1.24 2004/09/14 22:57:21 deraadt Exp $"; #endif #endif /* not lint */ /* * Sort sorts a file using an optional user-defined key. * Sort uses radix sort for internal sorting, and allows * a choice of merge sort and radix sort for external sorting. */ #include "sort.h" #include "fsort.h" #include "pathnames.h" #include #include #include #include #include #include #include #include #include int REC_D = '\n'; u_char d_mask[NBINS]; /* flags for rec_d, field_d, */ /* * weight tables. Gweights is one of ascii, Rascii.. * modified to weight rec_d = 0 (or 255) */ extern u_char gweights[NBINS]; u_char ascii[NBINS], Rascii[NBINS], RFtable[NBINS], Ftable[NBINS]; /* * masks of ignored characters. Alltable is 256 ones */ u_char dtable[NBINS], itable[NBINS], alltable[NBINS]; int SINGL_FLD = 0, SEP_FLAG = 0, UNIQUE = 0; struct coldesc *clist; int ncols = 0; int ND = 10; /* limit on number of -k options. */ char *devstdin = _PATH_STDIN; char *tmpdir = _PATH_VARTMP; char toutpath[PATH_MAX]; static void cleanup(void); static void onsig(int); static void usage(char *); #define CHECK_NFIELDS \ if (++nfields == ND) { \ ND += 10; \ if ((p = realloc(fldtab, ND)) == NULL) \ errx(2, "cannot allocate memory"); \ ftpos = p + (ftpos - fldtab); \ fldtab = p; \ } int main(int argc, char *argv[]) { int (*get)(int, union f_handle, int, RECHEADER *, u_char *, struct field *); int ch, i, stdinflag = 0, tmp = 0; char nfields = 0, cflag = 0, mflag = 0; char *outfile, *outpath = 0; struct field *fldtab, *ftpos; union f_handle filelist; FILE *outfp = NULL; void *p; setlocale(LC_ALL, ""); if ((clist = calloc((ND+1)*2, sizeof(struct coldesc))) == NULL || (ftpos = fldtab = calloc(ND+2, sizeof(struct field))) == NULL) errx(2, "cannot allocate memory"); memset(d_mask, 0, NBINS); d_mask[REC_D = '\n'] = REC_D_F; d_mask['\t'] = d_mask[' '] = BLANK | FLD_D; fixit(&argc, argv); if (!issetugid() && (outfile = getenv("TMPDIR"))) tmpdir = outfile; while ((ch = getopt(argc, argv, "bcdfik:mHno:rR:t:T:uy:")) != -1) { switch (ch) { case 'b': fldtab->flags |= BI | BT; break; case 'd': case 'f': case 'i': case 'n': case 'r': tmp |= optval(ch, 0); if (tmp & R && tmp & F) fldtab->weights = RFtable; else if (tmp & F) fldtab->weights = Ftable; else if (tmp & R) fldtab->weights = Rascii; fldtab->flags |= tmp; break; case 'o': outpath = optarg; break; case 'k': CHECK_NFIELDS; setfield(optarg, ++ftpos, fldtab->flags); break; case 't': if (SEP_FLAG) usage("multiple field delimiters"); SEP_FLAG = 1; d_mask[' '] &= ~FLD_D; d_mask['\t'] &= ~FLD_D; d_mask[(int)*optarg] |= FLD_D; if (d_mask[(int)*optarg] & REC_D_F) err(2, "record/field delimiter clash"); break; case 'R': if (REC_D != '\n') usage("multiple record delimiters"); if ('\n' == (REC_D = *optarg)) break; d_mask['\n'] = d_mask[' ']; d_mask[REC_D] = REC_D_F; break; case 'T': tmpdir = optarg; break; case 'u': UNIQUE = 1; break; case 'c': cflag = 1; break; case 'm': mflag = 1; break; case 'H': PANIC = 0; break; case 'y': /* accept -y for backwards compat. */ break; case '?': default: usage(NULL); } } if (cflag && argc > optind+1) errx(2, "too many input files for -c option"); if (argc - 2 > optind && !strcmp(argv[argc-2], "-o")) { outpath = argv[argc-1]; argc -= 2; } if (mflag && argc - optind > (MAXFCT - (16+1))*16) errx(2, "too many input files for -m option"); for (i = optind; i < argc; i++) { /* allow one occurrence of /dev/stdin */ if (!strcmp(argv[i], "-") || !strcmp(argv[i], devstdin)) { if (stdinflag) warnx("ignoring extra \"%s\" in file list", argv[i]); else { stdinflag = 1; argv[i] = devstdin; } } else if ((ch = access(argv[i], R_OK))) err(2, "%s", argv[i]); } if (!(fldtab->flags & (I|D|N) || fldtab[1].icol.num)) { SINGL_FLD = 1; fldtab[0].icol.num = 1; } else { if (!fldtab[1].icol.num) { CHECK_NFIELDS; fldtab[0].flags &= ~(BI|BT); setfield("1", ++ftpos, fldtab->flags); } fldreset(fldtab); fldtab[0].flags &= ~F; } settables(fldtab[0].flags); num_init(); fldtab->weights = gweights; if (optind == argc) { static char *names[2]; names[0] = devstdin; names[1] = NULL; filelist.names = names; optind--; } else filelist.names = argv+optind; if (SINGL_FLD) get = makeline; else get = makekey; if (cflag) { order(filelist, get, fldtab); /* NOT REACHED */ } if (!outpath) { (void)snprintf(toutpath, sizeof(toutpath), "%sstdout", _PATH_DEV); outfile = outpath = toutpath; } else if (!(ch = access(outpath, 0)) && strncmp(_PATH_DEV, outpath, 5)) { struct sigaction act; int sigtable[] = {SIGHUP, SIGINT, SIGPIPE, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF, 0}; int outfd; mode_t um; errno = 0; if (access(outpath, W_OK)) err(2, "%s", outpath); (void)snprintf(toutpath, sizeof(toutpath), "%sXXXXXXXXXX", outpath); /* use default umask to try and avoid one syscall */ um = umask(S_IWGRP|S_IWOTH); if (um != S_IWGRP|S_IWOTH) (void)umask(um); if ((outfd = mkstemp(toutpath)) == -1 || fchmod(outfd, DEFFILEMODE & ~um) == -1 || (outfp = fdopen(outfd, "w")) == 0) err(2, "%s", toutpath); outfile = toutpath; (void)atexit(cleanup); sigfillset(&act.sa_mask); act.sa_flags = SA_RESTART; act.sa_handler = onsig; for (i = 0; sigtable[i]; ++i) /* always unlink toutpath */ sigaction(sigtable[i], &act, 0); } else outfile = outpath; if (outfp == NULL && (outfp = fopen(outfile, "w")) == NULL) err(2, "%s", outfile); if (mflag) fmerge(-1, filelist, argc-optind, get, outfp, putline, fldtab); else fsort(-1, 0, filelist, argc-optind, outfp, fldtab); if (outfile != outpath) { if (access(outfile, 0)) err(2, "%s", outfile); (void)unlink(outpath); if (link(outfile, outpath)) err(2, "cannot link %s: output left in %s", outpath, outfile); (void)unlink(outfile); } exit(0); } /* ARGSUSED */ static void onsig(int signo) { cleanup(); _exit(2); /* return 2 on error/interrupt */ } static void cleanup(void) { if (toutpath[0]) (void)unlink(toutpath); } static void usage(char *msg) { extern char *__progname; if (msg != NULL) warnx("%s", msg); (void)fprintf(stderr, "usage: %s [-T dir] [-o output] [-cmubdfinrH] " "[-t char] [-R char] [-k keydef] ... [files]\n", __progname); exit(2); }