new file for reading /etc/environment. From Ake Sandgren <ake@cs.umu.se>

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@8418 ec53bebd-3082-4978-b11e-865c3cabbd6b
2000-06-21 02:05:03 +00:00
parent 08da0afa8c
commit c2fd9ca023
1 changed files with 103 additions and 0 deletions
--- a/lib/roken/environment.c
+++ b/lib/roken/environment.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2000 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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. 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id$");
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include "roken.h"
+
+/*
+ * return count of environment assignments from `file' and 
+ * list of malloced strings in `env'
+ */
+
+int
+read_environment(const char *file, char ***env)
+{
+    int i, k;
+    FILE *F;
+    char **l;
+    char buf[BUFSIZ], *p, *r;
+
+    if ((F = fopen(file, "r")) == NULL) {
+	return 0;
+    }
+
+    i = 0;
+    if (*env) {
+	l = *env;
+	while (*l != NULL) {
+	    i++;
+	    l++;
+	}
+    }
+    l = *env;
+    /* This is somewhat more relaxed on what it accepts then
+     * Wietses sysv_environ from K4 was...
+     */
+    while (fgets(buf, BUFSIZ, F) != NULL) {
+	if (buf[0] == '#')
+	    continue;
+
+	p = strchr(buf, '#');
+	if (p != NULL)
+	    *p = '\0';
+
+	p = buf;
+	while (*p == ' ' || *p == '\t' || *p == '\n') p++;
+	if (*p == '\0')
+	    continue;
+
+	k = strlen(p);
+	if (p[k-1] == '\n')
+	    p[k-1] = '\0';
+
+	/* Here one should check that is is a 'valid' env string... */
+	r = strchr(p, '=');
+	if (r == NULL)
+	    continue;
+
+	l = realloc(l, (i+1) * sizeof (char *));
+	l[i++] = strdup(p);
+    }
+    fclose(F);
+    l = realloc(l, (i+1) * sizeof (char *));
+    l[i] = NULL;
+    *env = l;
+    return i;
+}