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-rw-r--r--crypto/heimdal/lib/krb5/config_file.c750
1 files changed, 750 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/krb5/config_file.c b/crypto/heimdal/lib/krb5/config_file.c
new file mode 100644
index 0000000..3d1ff1e
--- /dev/null
+++ b/crypto/heimdal/lib/krb5/config_file.c
@@ -0,0 +1,750 @@
+/*
+ * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska Högskolan
+ * (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.
+ */
+
+#include "krb5_locl.h"
+RCSID("$Id: config_file.c,v 1.38 1999/12/02 17:05:08 joda Exp $");
+
+#ifndef HAVE_NETINFO
+
+static int parse_section(char *p, krb5_config_section **s,
+ krb5_config_section **res,
+ char **error_message);
+static int parse_binding(FILE *f, unsigned *lineno, char *p,
+ krb5_config_binding **b,
+ krb5_config_binding **parent,
+ char **error_message);
+static int parse_list(FILE *f, unsigned *lineno, krb5_config_binding **parent,
+ char **error_message);
+
+/*
+ * Parse a section:
+ *
+ * [section]
+ * foo = bar
+ * b = {
+ * a
+ * }
+ * ...
+ *
+ * starting at the line in `p', storing the resulting structure in
+ * `s' and hooking it into `parent'.
+ * Store the error message in `error_message'.
+ */
+
+static int
+parse_section(char *p, krb5_config_section **s, krb5_config_section **parent,
+ char **error_message)
+{
+ char *p1;
+ krb5_config_section *tmp;
+
+ p1 = strchr (p + 1, ']');
+ if (p1 == NULL) {
+ *error_message = "missing ]";
+ return -1;
+ }
+ *p1 = '\0';
+ tmp = malloc(sizeof(*tmp));
+ if (tmp == NULL) {
+ *error_message = "out of memory";
+ return -1;
+ }
+ tmp->name = strdup(p+1);
+ if (tmp->name == NULL) {
+ *error_message = "out of memory";
+ return -1;
+ }
+ tmp->type = krb5_config_list;
+ tmp->u.list = NULL;
+ tmp->next = NULL;
+ if (*s)
+ (*s)->next = tmp;
+ else
+ *parent = tmp;
+ *s = tmp;
+ return 0;
+}
+
+/*
+ * Parse a brace-enclosed list from `f', hooking in the structure at
+ * `parent'.
+ * Store the error message in `error_message'.
+ */
+
+static int
+parse_list(FILE *f, unsigned *lineno, krb5_config_binding **parent,
+ char **error_message)
+{
+ char buf[BUFSIZ];
+ int ret;
+ krb5_config_binding *b = NULL;
+ unsigned beg_lineno = *lineno;
+
+ while(fgets(buf, sizeof(buf), f) != NULL) {
+ char *p;
+
+ ++*lineno;
+ if (buf[strlen(buf) - 1] == '\n')
+ buf[strlen(buf) - 1] = '\0';
+ p = buf;
+ while(isspace((unsigned char)*p))
+ ++p;
+ if (*p == '#' || *p == ';' || *p == '\0')
+ continue;
+ while(isspace((unsigned char)*p))
+ ++p;
+ if (*p == '}')
+ return 0;
+ if (*p == '\0')
+ continue;
+ ret = parse_binding (f, lineno, p, &b, parent, error_message);
+ if (ret)
+ return ret;
+ }
+ *lineno = beg_lineno;
+ *error_message = "unclosed {";
+ return -1;
+}
+
+/*
+ *
+ */
+
+static int
+parse_binding(FILE *f, unsigned *lineno, char *p,
+ krb5_config_binding **b, krb5_config_binding **parent,
+ char **error_message)
+{
+ krb5_config_binding *tmp;
+ char *p1, *p2;
+ int ret = 0;
+
+ p1 = p;
+ while (*p && *p != '=' && !isspace((unsigned char)*p))
+ ++p;
+ if (*p == '\0') {
+ *error_message = "no =";
+ return -1;
+ }
+ p2 = p;
+ while (isspace((unsigned char)*p))
+ ++p;
+ if (*p != '=') {
+ *error_message = "no =";
+ return -1;
+ }
+ ++p;
+ while(isspace((unsigned char)*p))
+ ++p;
+ tmp = malloc(sizeof(*tmp));
+ if (tmp == NULL) {
+ *error_message = "out of memory";
+ return -1;
+ }
+ *p2 = '\0';
+ tmp->name = strdup(p1);
+ tmp->next = NULL;
+ if (*p == '{') {
+ tmp->type = krb5_config_list;
+ tmp->u.list = NULL;
+ ret = parse_list (f, lineno, &tmp->u.list, error_message);
+ } else {
+ p1 = p;
+ p = p1 + strlen(p1);
+ while(p > p1 && isspace((unsigned char)*(p-1)))
+ --p;
+ *p = '\0';
+ tmp->type = krb5_config_string;
+ tmp->u.string = strdup(p1);
+ }
+ if (*b)
+ (*b)->next = tmp;
+ else
+ *parent = tmp;
+ *b = tmp;
+ return ret;
+}
+
+/*
+ * Parse the config file `fname', generating the structures into `res'
+ * returning error messages in `error_message'
+ */
+
+krb5_error_code
+krb5_config_parse_file_debug (const char *fname,
+ krb5_config_section **res,
+ unsigned *lineno,
+ char **error_message)
+{
+ FILE *f;
+ krb5_config_section *s;
+ krb5_config_binding *b;
+ char buf[BUFSIZ];
+ int ret;
+
+ s = NULL;
+ b = NULL;
+ *lineno = 0;
+ f = fopen (fname, "r");
+ if (f == NULL) {
+ *error_message = "cannot open file";
+ return -1;
+ }
+ *res = NULL;
+ while (fgets(buf, sizeof(buf), f) != NULL) {
+ char *p;
+
+ ++*lineno;
+ if(buf[strlen(buf) - 1] == '\n')
+ buf[strlen(buf) - 1] = '\0';
+ p = buf;
+ while(isspace((unsigned char)*p))
+ ++p;
+ if (*p == '#' || *p == ';')
+ continue;
+ if (*p == '[') {
+ ret = parse_section(p, &s, res, error_message);
+ if (ret)
+ return ret;
+ b = NULL;
+ } else if (*p == '}') {
+ *error_message = "unmatched }";
+ return -1;
+ } else if(*p != '\0') {
+ ret = parse_binding(f, lineno, p, &b, &s->u.list, error_message);
+ if (ret)
+ return ret;
+ }
+ }
+ fclose (f);
+ return 0;
+}
+
+krb5_error_code
+krb5_config_parse_file (const char *fname, krb5_config_section **res)
+{
+ char *foo;
+ unsigned lineno;
+
+ return krb5_config_parse_file_debug (fname, res, &lineno, &foo);
+}
+
+#endif /* !HAVE_NETINFO */
+
+static void
+free_binding (krb5_context context, krb5_config_binding *b)
+{
+ krb5_config_binding *next_b;
+
+ while (b) {
+ free (b->name);
+ if (b->type == krb5_config_string)
+ free (b->u.string);
+ else if (b->type == krb5_config_list)
+ free_binding (context, b->u.list);
+ else
+ krb5_abortx(context, "unknown binding type (%d) in free_binding",
+ b->type);
+ next_b = b->next;
+ free (b);
+ b = next_b;
+ }
+}
+
+krb5_error_code
+krb5_config_file_free (krb5_context context, krb5_config_section *s)
+{
+ free_binding (context, s);
+ return 0;
+}
+
+const void *
+krb5_config_get_next (krb5_context context,
+ krb5_config_section *c,
+ krb5_config_binding **pointer,
+ int type,
+ ...)
+{
+ const char *ret;
+ va_list args;
+
+ va_start(args, type);
+ ret = krb5_config_vget_next (context, c, pointer, type, args);
+ va_end(args);
+ return ret;
+}
+
+const void *
+krb5_config_vget_next (krb5_context context,
+ krb5_config_section *c,
+ krb5_config_binding **pointer,
+ int type,
+ va_list args)
+{
+ krb5_config_binding *b;
+ const char *p;
+
+ if(c == NULL)
+ c = context->cf;
+
+ if (c == NULL)
+ return NULL;
+
+ if (*pointer == NULL) {
+ b = (c != NULL) ? c : context->cf;
+ p = va_arg(args, const char *);
+ if (p == NULL)
+ return NULL;
+ } else {
+ b = *pointer;
+ p = b->name;
+ b = b->next;
+ }
+
+ while (b) {
+ if (strcmp (b->name, p) == 0) {
+ if (*pointer == NULL)
+ p = va_arg(args, const char *);
+ else
+ p = NULL;
+ if (type == b->type && p == NULL) {
+ *pointer = b;
+ return b->u.generic;
+ } else if(b->type == krb5_config_list && p != NULL) {
+ b = b->u.list;
+ } else {
+ return NULL;
+ }
+ } else {
+ b = b->next;
+ }
+ }
+ return NULL;
+}
+
+const void *
+krb5_config_get (krb5_context context,
+ krb5_config_section *c,
+ int type,
+ ...)
+{
+ const void *ret;
+ va_list args;
+
+ va_start(args, type);
+ ret = krb5_config_vget (context, c, type, args);
+ va_end(args);
+ return ret;
+}
+
+const void *
+krb5_config_vget (krb5_context context,
+ krb5_config_section *c,
+ int type,
+ va_list args)
+{
+ krb5_config_binding *foo = NULL;
+
+ return krb5_config_vget_next (context, c, &foo, type, args);
+}
+
+const krb5_config_binding *
+krb5_config_get_list (krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ const krb5_config_binding *ret;
+ va_list args;
+
+ va_start(args, c);
+ ret = krb5_config_vget_list (context, c, args);
+ va_end(args);
+ return ret;
+}
+
+const krb5_config_binding *
+krb5_config_vget_list (krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ return krb5_config_vget (context, c, krb5_config_list, args);
+}
+
+const char *
+krb5_config_get_string (krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ const char *ret;
+ va_list args;
+
+ va_start(args, c);
+ ret = krb5_config_vget_string (context, c, args);
+ va_end(args);
+ return ret;
+}
+
+const char *
+krb5_config_vget_string (krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ return krb5_config_vget (context, c, krb5_config_string, args);
+}
+
+char **
+krb5_config_vget_strings(krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ char **strings = NULL;
+ int nstr = 0;
+ krb5_config_binding *b = NULL;
+ const char *p;
+
+ while((p = krb5_config_vget_next(context, c, &b,
+ krb5_config_string, args))) {
+ char *tmp = strdup(p);
+ char *pos = NULL;
+ char *s;
+ if(tmp == NULL)
+ goto cleanup;
+ s = strtok_r(tmp, " \t", &pos);
+ while(s){
+ char **tmp = realloc(strings, (nstr + 1) * sizeof(*strings));
+ if(tmp == NULL)
+ goto cleanup;
+ strings = tmp;
+ strings[nstr] = strdup(s);
+ nstr++;
+ if(strings[nstr-1] == NULL)
+ goto cleanup;
+ s = strtok_r(NULL, " \t", &pos);
+ }
+ free(tmp);
+ }
+ if(nstr){
+ char **tmp = realloc(strings, (nstr + 1) * sizeof(*strings));
+ if(strings == NULL)
+ goto cleanup;
+ strings = tmp;
+ strings[nstr] = NULL;
+ }
+ return strings;
+cleanup:
+ while(nstr--)
+ free(strings[nstr]);
+ free(strings);
+ return NULL;
+
+}
+
+char**
+krb5_config_get_strings(krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ va_list ap;
+ char **ret;
+ va_start(ap, c);
+ ret = krb5_config_vget_strings(context, c, ap);
+ va_end(ap);
+ return ret;
+}
+
+void
+krb5_config_free_strings(char **strings)
+{
+ char **s = strings;
+ while(s && *s){
+ free(*s);
+ s++;
+ }
+ free(strings);
+}
+
+krb5_boolean
+krb5_config_vget_bool_default (krb5_context context,
+ krb5_config_section *c,
+ krb5_boolean def_value,
+ va_list args)
+{
+ const char *str;
+ str = krb5_config_vget_string (context, c, args);
+ if(str == NULL)
+ return def_value;
+ if(strcasecmp(str, "yes") == 0 ||
+ strcasecmp(str, "true") == 0 ||
+ atoi(str)) return TRUE;
+ return FALSE;
+}
+
+krb5_boolean
+krb5_config_vget_bool (krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ return krb5_config_vget_bool_default (context, c, FALSE, args);
+}
+
+krb5_boolean
+krb5_config_get_bool_default (krb5_context context,
+ krb5_config_section *c,
+ krb5_boolean def_value,
+ ...)
+{
+ va_list ap;
+ krb5_boolean ret;
+ va_start(ap, def_value);
+ ret = krb5_config_vget_bool_default(context, c, def_value, ap);
+ va_end(ap);
+ return ret;
+}
+
+krb5_boolean
+krb5_config_get_bool (krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ va_list ap;
+ krb5_boolean ret;
+ va_start(ap, c);
+ ret = krb5_config_vget_bool (context, c, ap);
+ va_end(ap);
+ return ret;
+}
+
+int
+krb5_config_vget_time_default (krb5_context context,
+ krb5_config_section *c,
+ int def_value,
+ va_list args)
+{
+ const char *str;
+ str = krb5_config_vget_string (context, c, args);
+ if(str == NULL)
+ return def_value;
+ return parse_time (str, NULL);
+}
+
+int
+krb5_config_vget_time (krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ return krb5_config_vget_time_default (context, c, -1, args);
+}
+
+int
+krb5_config_get_time_default (krb5_context context,
+ krb5_config_section *c,
+ int def_value,
+ ...)
+{
+ va_list ap;
+ int ret;
+ va_start(ap, def_value);
+ ret = krb5_config_vget_time_default(context, c, def_value, ap);
+ va_end(ap);
+ return ret;
+}
+
+int
+krb5_config_get_time (krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ va_list ap;
+ int ret;
+ va_start(ap, c);
+ ret = krb5_config_vget_time (context, c, ap);
+ va_end(ap);
+ return ret;
+}
+
+
+int
+krb5_config_vget_int_default (krb5_context context,
+ krb5_config_section *c,
+ int def_value,
+ va_list args)
+{
+ const char *str;
+ str = krb5_config_vget_string (context, c, args);
+ if(str == NULL)
+ return def_value;
+ else {
+ char *endptr;
+ long l;
+ l = strtol(str, &endptr, 0);
+ if (endptr == str)
+ return def_value;
+ else
+ return l;
+ }
+}
+
+int
+krb5_config_vget_int (krb5_context context,
+ krb5_config_section *c,
+ va_list args)
+{
+ return krb5_config_vget_int_default (context, c, -1, args);
+}
+
+int
+krb5_config_get_int_default (krb5_context context,
+ krb5_config_section *c,
+ int def_value,
+ ...)
+{
+ va_list ap;
+ int ret;
+ va_start(ap, def_value);
+ ret = krb5_config_vget_int_default(context, c, def_value, ap);
+ va_end(ap);
+ return ret;
+}
+
+int
+krb5_config_get_int (krb5_context context,
+ krb5_config_section *c,
+ ...)
+{
+ va_list ap;
+ int ret;
+ va_start(ap, c);
+ ret = krb5_config_vget_int (context, c, ap);
+ va_end(ap);
+ return ret;
+}
+
+#ifdef TEST
+
+static int print_list (krb5_context context, FILE *f,
+ krb5_config_binding *l, unsigned level);
+static int print_binding (krb5_context context, FILE *f,
+ krb5_config_binding *b, unsigned level);
+static int print_section (krb5_context context, FILE *f,
+ krb5_config_section *s, unsigned level);
+static int print_config (krb5_context context, FILE *f,
+ krb5_config_section *c);
+
+static void
+tab (FILE *f, unsigned count)
+{
+ while(count--)
+ fprintf (f, "\t");
+}
+
+static int
+print_list (krb5_context context,
+ FILE *f,
+ krb5_config_binding *l,
+ unsigned level)
+{
+ while(l) {
+ print_binding (context, f, l, level);
+ l = l->next;
+ }
+ return 0;
+}
+
+static int
+print_binding (krb5_context context,
+ FILE *f,
+ krb5_config_binding *b,
+ unsigned level)
+{
+ tab (f, level);
+ fprintf (f, "%s = ", b->name);
+ if (b->type == krb5_config_string)
+ fprintf (f, "%s\n", b->u.string);
+ else if (b->type == krb5_config_list) {
+ fprintf (f, "{\n");
+ print_list (f, b->u.list, level + 1);
+ tab (f, level);
+ fprintf (f, "}\n");
+ } else
+ krb5_abortx(context, "unknown binding type (%d) in print_binding",
+ b->type);
+ return 0;
+}
+
+static int
+print_section (FILE *f, krb5_config_section *s, unsigned level)
+{
+ fprintf (f, "[%s]\n", s->name);
+ print_list (f, s->u.list, level + 1);
+ return 0;
+}
+
+static int
+print_config (FILE *f, krb5_config_section *c)
+{
+ while (c) {
+ print_section (f, c, 0);
+ c = c->next;
+ }
+ return 0;
+}
+
+
+int
+main(void)
+{
+ krb5_config_section *c;
+
+ printf ("%d\n", krb5_config_parse_file ("/etc/krb5.conf", &c));
+ print_config (stdout, c);
+ printf ("[libdefaults]ticket_lifetime = %s\n",
+ krb5_config_get_string (context, c,
+ "libdefaults",
+ "ticket_lifetime",
+ NULL));
+ printf ("[realms]foo = %s\n",
+ krb5_config_get_string (context, c,
+ "realms",
+ "foo",
+ NULL));
+ printf ("[realms]ATHENA.MIT.EDU/v4_instance_convert/lithium = %s\n",
+ krb5_config_get_string (context, c,
+ "realms",
+ "ATHENA.MIT.EDU",
+ "v4_instance_convert",
+ "lithium",
+ NULL));
+ return 0;
+}
+
+#endif /* TEST */
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