OpenSolaris Launch

1 files changed, 203 insertions, 0 deletions

diff --git a/usr/src/lib/libslp/clib/slp_config.c b/usr/src/lib/libslp/clib/slp_config.c
new file mode 100644
index 0000000000..b84fda0114
--- /dev/null
+++ b/usr/src/lib/libslp/clib/slp_config.c
@@ -0,0 +1,203 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Provides accessors to configuration properties.
+ *
+ * slp_readConfig:	attempts to locate slp.conf, and reads in all
+ *				properties specified therein.
+ * slp_get_mtu:		returns the MTU
+ * slp_get_next_onlist:	parses a comma separated list of integers (in
+ *				string form), returning one at a time.
+ * slp_parse_static_das: parses the list of DAs given in the DAAddresses
+ *				property.
+ *
+ * Also see the config wrapper macros in slp-internal.h.
+ */
+
+#include <stdio.h>
+#include <syslog.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <slp-internal.h>
+
+/*
+ * Reads from fp and dynamically reallocates the buffer if necessary.
+ * Returns 1 on success, 0 on read completion, and -1 on failure.
+ */
+static int super_fgets(char **buf, size_t *bufsize, FILE *fp) {
+	char *r, *p;
+	size_t real_bufsize, readlen = 0;
+
+	p = *buf;
+	real_bufsize = *bufsize;
+	for (;;) {
+		r = fgets(p, (int)real_bufsize, fp);
+		if (feof(fp) && !r)
+			return (0);
+		if (!r)
+			return (-1);
+		readlen += strlen(r);
+		if ((*buf)[readlen - 1] == '\n')
+			return (1);
+
+		/* else	buf is too small */
+		*bufsize *= 2;
+		if (!(*buf = realloc(*buf, *bufsize))) {
+			slp_err(LOG_CRIT, 0, "super_fgets", "out of memory");
+			return (-1);
+		}
+		p = *buf + readlen;
+		real_bufsize = *bufsize - readlen;
+	}
+}
+
+static void skip_space(char **p) {
+	while (*p && **p != '\n' && isspace(**p))
+		(*p)++;
+}
+
+static void null_space(char *p) {
+	for (; *p; p++)
+		if (isspace(*p))
+			*p = 0;
+}
+
+/*
+ * Reads into the local property store all properties defined in
+ * the config file.
+ */
+void slp_readConfig() {
+	char *cfile, *buf;
+	FILE *fp;
+	size_t buflen = 512;
+
+	/* check env for alternate config file */
+	fp = NULL;
+	if (cfile = getenv("SLP_CONF_FILE"))
+		fp = fopen(cfile, "r");
+	if (!fp)
+		if (!(fp = fopen(SLP_DEFAULT_CONFIG_FILE, "r"))) {
+			slp_err(LOG_INFO, 0, "readConfig",
+				"cannot open config file");
+			return;
+		}
+
+	if (!(buf = malloc(buflen))) {
+		slp_err(LOG_CRIT, 0, "readConfig", "out of memory");
+		(void) fclose(fp);
+		return;
+	}
+
+	while (!feof(fp)) {
+		char *val, *p;
+		int err;
+
+		/* read a line */
+		err = super_fgets(&buf, &buflen, fp);
+		if (err == 0) continue;
+		if (err == -1) {
+			slp_err(LOG_INFO, 0, "readConfig",
+				"error reading file: %d",
+				ferror(fp));
+			(void) fclose(fp);
+			free(buf);
+			return;
+		}
+
+		/* skip comments and newlines */
+		p = buf;
+		skip_space(&p);
+		if (*p == '#' || *p == ';' || *p == '\n')
+			continue;
+
+		/* get property and value */
+		if (val = strchr(p, '=')) {
+			*val++ = 0;
+			skip_space(&val);
+			/* remove the trailing newline */
+			val[strlen(val) - 1] = 0;
+		}
+		null_space(p);
+
+		SLPSetProperty(p, val ? val : "");
+	}
+
+	(void) fclose(fp);
+	free(buf);
+}
+
+/*
+ * Config convenience wrappers
+ */
+size_t slp_get_mtu() {
+	size_t size;
+	size = atoi(SLPGetProperty(SLP_CONFIG_MTU));
+	size = size ? size : SLP_DEFAULT_SENDMTU;
+
+	return (size);
+}
+
+/*
+ * On the first invocation, *state should == the value of the property
+ * to parse.
+ * If there are no more timeouts, returns -1, otherwise the timeout.
+ * If the value in the property is invalid, returns the default 2000.
+ */
+int slp_get_next_onlist(char **state) {
+	char *p, buf[33];
+	size_t l;
+	int answer;
+
+	if (!*state)
+		return (-1);
+
+	if (**state == ',') {
+		(*state)++;	/* skip the ',' */
+	}
+	p = *state;
+	*state = slp_utf_strchr(*state, ',');
+	if (!*state)
+		l = strlen(p);
+	else {
+		l = *state - p;
+		l = (l > 32 ? 32 : l);
+	}
+	(void) strncpy(buf, p, l);
+	buf[l] = 0;
+	answer = atoi(buf);
+
+	return (answer != 0 ? answer : 2000);
+}
+
+int slp_get_maxResults() {
+	int num = atoi(SLPGetProperty(SLP_CONFIG_MAXRESULTS));
+
+	return (num <= 0 ? -1 : num);
+}