1/*	$OpenBSD: config.c,v 1.17 2015/11/05 09:48:21 nicm Exp $	*/
2/*
3 * Copyright (c) 2006 Joris Vink <joris@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/types.h>
19#include <sys/dirent.h>
20#include <sys/resource.h>
21
22#include <errno.h>
23#include <limits.h>
24#include <stdlib.h>
25#include <string.h>
26
27#include "cvs.h"
28#include "config.h"
29
30void
31cvs_parse_configfile(void)
32{
33	cvs_log(LP_TRACE, "cvs_parse_configfile()");
34	cvs_read_config(CVS_PATH_CONFIG, config_parse_line);
35}
36
37int
38config_parse_line(char *line, int lineno)
39{
40	struct rlimit rl;
41	const char *errstr;
42	char *val, *opt, *ep;
43
44	opt = line;
45	if ((val = strrchr(opt, '=')) == NULL)
46		fatal("cvs_parse_configfile: bad option '%s'", opt);
47
48	*(val++) = '\0';
49
50	if (!strcmp(opt, "tag")) {
51		free(cvs_tagname);
52		cvs_tagname = xstrdup(val);
53	} else if (!strcmp(opt, "umask")) {
54		cvs_umask = strtol(val, &ep, 8);
55
56		if (val == ep || *ep != '\0')
57			fatal("cvs_parse_configfile: umask %s is "
58			    "invalid", val);
59		if (cvs_umask < 0 || cvs_umask > 07777)
60			fatal("cvs_parse_configfile: umask %s is "
61			    "invalid", val);
62	} else if (!strcmp(opt, "dlimit")) {
63		if (getrlimit(RLIMIT_DATA, &rl) != -1) {
64			rl.rlim_cur = (int)strtonum(val, 0, INT_MAX,
65			    &errstr);
66			if (errstr != NULL)
67				fatal("cvs_parse_configfile: %s: %s",
68				    val, errstr);
69			rl.rlim_cur = rl.rlim_cur * 1024;
70			(void)setrlimit(RLIMIT_DATA, &rl);
71		}
72	} else {
73		cvs_log(LP_ERR, "ignoring unknown option '%s'", opt);
74	}
75
76	return (0);
77}
78
79void
80cvs_read_config(char *name, int (*cb)(char *, int))
81{
82	FILE *fp;
83	size_t len;
84	int lineno;
85	char *p, *buf, *lbuf, fpath[PATH_MAX];
86
87	(void)xsnprintf(fpath, sizeof(fpath), "%s/%s",
88	    current_cvsroot->cr_dir, name);
89
90	if ((fp = fopen(fpath, "r")) == NULL)
91		return;
92
93	lbuf = NULL;
94	lineno = 0;
95	while ((buf = fgetln(fp, &len)) != NULL) {
96		lineno++;
97		if (buf[len - 1] == '\n') {
98			buf[len - 1] = '\0';
99		} else {
100			lbuf = xmalloc(len + 1);
101			memcpy(lbuf, buf, len);
102			lbuf[len] = '\0';
103			buf = lbuf;
104		}
105
106		p = buf;
107		while (*p == ' ' || *p == '\t')
108			p++;
109
110		if (p[0] == '#' || p[0] == '\0')
111			continue;
112
113		if (cb(p, lineno) < 0)
114			break;
115	}
116
117	free(lbuf);
118	(void)fclose(fp);
119}
120