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Replace <sys/param.h> with <limits.h> and other less dirty headers where
possible.  Annotate <sys/param.h> lines with their current reasons.  Switch
to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1, LOGIN_NAME_MAX, etc.  Change
MIN() and MAX() to local definitions of MINIMUM() and MAXIMUM() where
sensible to avoid pulling in the pollution.  These are the files confirmed
through binary verification.
ok guenther, millert, doug (helped with the verification protocol)

/*	$OpenBSD: rlog.c,v 1.71 2015/01/16 06:40:11 deraadt Exp $	*/
/*
 * Copyright (c) 2005, 2009 Joris Vink <joris@openbsd.org>
 * Copyright (c) 2005, 2006 Xavier Santolaria <xsa@openbsd.org>
 * All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
 */

#include <ctype.h>
#include <err.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "rcsprog.h"
#include "diff.h"

#define RLOG_DATE_LATER		0x01
#define RLOG_DATE_EARLIER	0x02
#define RLOG_DATE_SINGLE	0x04
#define RLOG_DATE_RANGE		0x08
#define RLOG_DATE_INCLUSIVE	0x10

static int	rlog_select_daterev(RCSFILE *, char *);
static void	rlog_file(const char *, RCSFILE *);
static void	rlog_rev_print(struct rcs_delta *);

#define RLOG_OPTSTRING	"d:hLl::NqRr::s:TtVw::x::z::"
#define REVSEP		"----------------------------"
#define REVEND \
 "============================================================================="

static int dflag, hflag, Lflag, lflag, rflag, tflag, Nflag, wflag;
static char *llist = NULL;
static char *slist = NULL;
static char *wlist = NULL;
static char *revisions = NULL;
static char *rlog_dates = NULL;

__dead void
rlog_usage(void)
{
	fprintf(stderr,
	    "usage: rlog [-bhLNRtV] [-ddates] [-l[lockers]] [-r[revs]]\n"
	    "            [-sstates] [-w[logins]] [-xsuffixes]\n"
	    "            [-ztz] file ...\n");

	exit(1);
}

int
rlog_main(int argc, char **argv)
{
	RCSFILE *file;
	int Rflag;
	int i, ch, fd, status;
	char fpath[PATH_MAX];

	rcsnum_flags |= RCSNUM_NO_MAGIC;
	hflag = Rflag = rflag = status = 0;
	while ((ch = rcs_getopt(argc, argv, RLOG_OPTSTRING)) != -1) {
		switch (ch) {
		case 'd':
			dflag = 1;
			rlog_dates = rcs_optarg;
			break;
		case 'h':
			hflag = 1;
			break;
		case 'L':
			Lflag = 1;
			break;
		case 'l':
			lflag = 1;
			llist = rcs_optarg;
			break;
		case 'N':
			Nflag = 1;
			break;
		case 'q':
			/*
			 * kept for compatibility
			 */
			break;
		case 'R':
			Rflag = 1;
			break;
		case 'r':
			rflag = 1;
			revisions = rcs_optarg;
			break;
		case 's':
			slist = rcs_optarg;
			break;
		case 'T':
			/*
			 * kept for compatibility
			 */
			break;
		case 't':
			tflag = 1;
			break;
		case 'V':
			printf("%s\n", rcs_version);
			exit(0);
		case 'w':
			wflag = 1;
			wlist = rcs_optarg;
			break;
		case 'x':
			/* Use blank extension if none given. */
			rcs_suffixes = rcs_optarg ? rcs_optarg : "";
			break;
		case 'z':
			timezone_flag = rcs_optarg;
			break;
		default:
			(usage)();
		}
	}

	argc -= rcs_optind;
	argv += rcs_optind;

	if (argc == 0) {
		warnx("no input file");
		(usage)();
	}

	if (hflag == 1 && tflag == 1) {
		warnx("warning: -t overrides -h.");
		hflag = 0;
	}

	for (i = 0; i < argc; i++) {
		fd = rcs_choosefile(argv[i], fpath, sizeof(fpath));
		if (fd < 0) {
			warn("%s", fpath);
			status = 1;
			continue;
		}

		if ((file = rcs_open(fpath, fd,
		    RCS_READ|RCS_PARSE_FULLY)) == NULL) {
			status = 1;
			continue;
		}

		if (Lflag == 1 && TAILQ_EMPTY(&(file->rf_locks))) {
			rcs_close(file);
			continue;
		}

		if (Rflag == 1) {
			printf("%s\n", fpath);
			rcs_close(file);
			continue;
		}

		rlog_file(argv[i], file);

		rcs_close(file);
	}

	return (status);
}

static int
rlog_select_daterev(RCSFILE *rcsfile, char *date)
{
	int i, nrev, flags;
	struct rcs_delta *rdp;
	struct rcs_argvector *args;
	char *first, *last, delim;
	time_t firstdate, lastdate, rcsdate;

	nrev = 0;
	args = rcs_strsplit(date, ";");

	for (i = 0; args->argv[i] != NULL; i++) {
		flags = 0;
		firstdate = lastdate = -1;

		first = args->argv[i];
		last = strchr(args->argv[i], '<');
		if (last != NULL) {
			delim = *last;
			*last++ = '\0';

			if (*last == '=') {
				last++;
				flags |= RLOG_DATE_INCLUSIVE;
			}
		} else {
			last = strchr(args->argv[i], '>');
			if (last != NULL) {
				delim = *last;
				*last++ = '\0';

				if (*last == '=') {
					last++;
					flags |= RLOG_DATE_INCLUSIVE;
				}
			}
		}

		if (last == NULL) {
			flags |= RLOG_DATE_SINGLE;
			if ((firstdate = date_parse(first)) == -1)
				return -1;
			delim = '\0';
			last = "\0";
		} else {
			while (*last && isspace((unsigned char)*last))
				last++;
		}

		if (delim == '>' && *last == '\0') {
			flags |= RLOG_DATE_EARLIER;
			if ((firstdate = date_parse(first)) == -1)
				return -1;
		}

		if (delim == '>' && *first == '\0' && *last != '\0') {
			flags |= RLOG_DATE_LATER;
			if ((firstdate = date_parse(last)) == -1)
				return -1;
		}

		if (delim == '<' && *last == '\0') {
			flags |= RLOG_DATE_LATER;
			if ((firstdate = date_parse(first)) == -1)
				return -1;
		}

		if (delim == '<' && *first == '\0' && *last != '\0') {
			flags |= RLOG_DATE_EARLIER;
			if ((firstdate = date_parse(last)) == -1)
				return -1;
		}

		if (*first != '\0' && *last != '\0') {
			flags |= RLOG_DATE_RANGE;

			if (delim == '<') {
				firstdate = date_parse(first);
				lastdate = date_parse(last);
			} else {
				firstdate = date_parse(last);
				lastdate = date_parse(first);
			}
			if (firstdate == -1 || lastdate == -1)
				return -1;
		}

		TAILQ_FOREACH(rdp, &(rcsfile->rf_delta), rd_list) {
			rcsdate = mktime(&(rdp->rd_date));

			if (flags & RLOG_DATE_SINGLE) {
				if (rcsdate <= firstdate) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					break;
				}
			}

			if (flags & RLOG_DATE_EARLIER) {
				if (rcsdate < firstdate) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}

				if (flags & RLOG_DATE_INCLUSIVE &&
				    (rcsdate <= firstdate)) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}
			}

			if (flags & RLOG_DATE_LATER) {
				if (rcsdate > firstdate) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}

				if (flags & RLOG_DATE_INCLUSIVE &&
				    (rcsdate >= firstdate)) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}
			}

			if (flags & RLOG_DATE_RANGE) {
				if ((rcsdate > firstdate) &&
				    (rcsdate < lastdate)) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}

				if (flags & RLOG_DATE_INCLUSIVE &&
				    ((rcsdate >= firstdate) &&
				    (rcsdate <= lastdate))) {
					rdp->rd_flags |= RCS_RD_SELECT;
					nrev++;
					continue;
				}
			}
		}
	}

	return (nrev);
}

static void
rlog_file(const char *fname, RCSFILE *file)
{
	char numb[RCS_REV_BUFSZ];
	u_int nrev;
	struct rcs_sym *sym;
	struct rcs_access *acp;
	struct rcs_delta *rdp;
	struct rcs_lock *lkp;
	char *workfile, *p;

	if (rflag == 1)
		nrev = rcs_rev_select(file, revisions);
	else if (dflag == 1) {
		if ((nrev = rlog_select_daterev(file, rlog_dates)) == -1)
			errx(1, "invalid date: %s", rlog_dates);
	} else
		nrev = file->rf_ndelta;

	if ((workfile = basename(fname)) == NULL)
		err(1, "basename");

	/*
	 * In case they specified 'foo,v' as argument.
	 */
	if ((p = strrchr(workfile, ',')) != NULL)
		*p = '\0';

	printf("\nRCS file: %s", file->rf_path);
	printf("\nWorking file: %s", workfile);
	printf("\nhead:");
	if (file->rf_head != NULL)
		printf(" %s", rcsnum_tostr(file->rf_head, numb, sizeof(numb)));

	printf("\nbranch:");
	if (rcs_branch_get(file) != NULL) {
		printf(" %s", rcsnum_tostr(rcs_branch_get(file),
		    numb, sizeof(numb)));
	}

	printf("\nlocks: %s", (file->rf_flags & RCS_SLOCK) ? "strict" : "");
	TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list)
		printf("\n\t%s: %s", lkp->rl_name,
		    rcsnum_tostr(lkp->rl_num, numb, sizeof(numb)));
	printf("\naccess list:\n");
	TAILQ_FOREACH(acp, &(file->rf_access), ra_list)
		printf("\t%s\n", acp->ra_name);

	if (Nflag == 0) {
		printf("symbolic names:\n");
		TAILQ_FOREACH(sym, &(file->rf_symbols), rs_list) {
			printf("\t%s: %s\n", sym->rs_name,
			    rcsnum_tostr(sym->rs_num, numb, sizeof(numb)));
		}
	}

	printf("keyword substitution: %s\n",
	    file->rf_expand == NULL ? "kv" : file->rf_expand);

	printf("total revisions: %u", file->rf_ndelta);

	if (file->rf_head != NULL && hflag == 0 && tflag == 0)
		printf(";\tselected revisions: %u", nrev);

	printf("\n");


	if (hflag == 0 || tflag == 1)
		printf("description:\n%s", file->rf_desc);

	if (hflag == 0 && tflag == 0 &&
	    !(lflag == 1 && TAILQ_EMPTY(&file->rf_locks))) {
		TAILQ_FOREACH(rdp, &(file->rf_delta), rd_list) {
			/*
			 * if selections are enabled verify that entry is
			 * selected.
			 */
			if ((rflag == 0 && dflag == 0)
			    || (rdp->rd_flags & RCS_RD_SELECT))
				rlog_rev_print(rdp);
		}
	}

	printf("%s\n", REVEND);
}

static void
rlog_rev_print(struct rcs_delta *rdp)
{
	int i, found;
	struct tm t;
	char *author, numb[RCS_REV_BUFSZ], *fmt, timeb[RCS_TIME_BUFSZ];
	struct rcs_argvector *largv, *sargv, *wargv;
	struct rcs_branch *rb;
	struct rcs_delta *nrdp;

	found = 0;
	author = NULL;

	/* -l[lockers] */
	if (lflag == 1) {
		if (rdp->rd_locker != NULL)
			found++;

		if (llist != NULL) {
			/* if locker is empty, no need to go further. */
			if (rdp->rd_locker == NULL)
				return;
			largv = rcs_strsplit(llist, ",");
			for (i = 0; largv->argv[i] != NULL; i++) {
				if (strcmp(rdp->rd_locker, largv->argv[i])
				    == 0) {
					found++;
					break;
				}
				found = 0;
			}
			rcs_argv_destroy(largv);
		}
	}

	/* -sstates */
	if (slist != NULL) {
		sargv = rcs_strsplit(slist, ",");
		for (i = 0; sargv->argv[i] != NULL; i++) {
			if (strcmp(rdp->rd_state, sargv->argv[i]) == 0) {
				found++;
				break;
			}
			found = 0;
		}
		rcs_argv_destroy(sargv);
	}

	/* -w[logins] */
	if (wflag == 1) {
		if (wlist != NULL) {
			wargv = rcs_strsplit(wlist, ",");
			for (i = 0; wargv->argv[i] != NULL; i++) {
				if (strcmp(rdp->rd_author, wargv->argv[i])
				    == 0) {
					found++;
					break;
				}
				found = 0;
			}
			rcs_argv_destroy(wargv);
		} else {
			if ((author = getlogin()) == NULL)
				err(1, "getlogin");

			if (strcmp(rdp->rd_author, author) == 0)
				found++;
		}
	}

	/* XXX dirty... */
	if ((((slist != NULL && wflag == 1) ||
	    (slist != NULL && lflag == 1) ||
	    (lflag == 1 && wflag == 1)) && found < 2) ||
	    (((slist != NULL && lflag == 1 && wflag == 1) ||
	    (slist != NULL || lflag == 1 || wflag == 1)) && found == 0))
		return;

	printf("%s\n", REVSEP);

	rcsnum_tostr(rdp->rd_num, numb, sizeof(numb));

	printf("revision %s", numb);
	if (rdp->rd_locker != NULL)
		printf("\tlocked by: %s;", rdp->rd_locker);

	if (timezone_flag != NULL) {
		rcs_set_tz(timezone_flag, rdp, &t);
		fmt = "%Y-%m-%d %H:%M:%S%z";
	} else {
		t = rdp->rd_date;
		fmt = "%Y/%m/%d %H:%M:%S";
	}

	(void)strftime(timeb, sizeof(timeb), fmt, &t);

	printf("\ndate: %s;  author: %s;  state: %s;", timeb, rdp->rd_author,
	    rdp->rd_state);

	/*
	 * If we are a branch revision, the diff of this revision is stored
	 * in place.
	 * Otherwise, it is stored in the previous revision as a reversed diff.
	 */
	if (RCSNUM_ISBRANCHREV(rdp->rd_num))
		nrdp = rdp;
	else
		nrdp = TAILQ_NEXT(rdp, rd_list);

	/*
	 * We do not write diff stats for the first revision of the default
	 * branch, since it was not a diff but a full text.
	 */
	if (nrdp != NULL && rdp->rd_num->rn_len == nrdp->rd_num->rn_len) {
		int added, removed;

		rcs_delta_stats(nrdp, &added, &removed);
		if (RCSNUM_ISBRANCHREV(rdp->rd_num))
			printf("  lines: +%d -%d;", added, removed);
		else
			printf("  lines: +%d -%d;", removed, added);
	}

	if (rdp->rd_commitid != NULL)
		printf("  commitid: %s;", rdp->rd_commitid);

	printf("\n");

	if (!TAILQ_EMPTY(&(rdp->rd_branches))) {
		printf("branches:");
		TAILQ_FOREACH(rb, &(rdp->rd_branches), rb_list) {
			RCSNUM *branch;
			branch = rcsnum_revtobr(rb->rb_num);
			(void)rcsnum_tostr(branch, numb, sizeof(numb));
			printf("  %s;", numb);
			rcsnum_free(branch);
		}
		printf("\n");
	}

	printf("%s", rdp->rd_log);
}