Adding upstream version 2.4.47+dfsg.upstream/2.4.47+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 298 insertions, 0 deletions

diff --git a/include/rewrite.h b/include/rewrite.h
new file mode 100644
index 0000000..720a825
--- /dev/null
+++ b/include/rewrite.h
@@ -0,0 +1,298 @@
+/* $OpenLDAP$
+ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2018 The OpenLDAP Foundation.
+ * Portions Copyright 2000-2003 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENT:
+ * This work was initially developed by Pierangelo Masarati for
+ * inclusion in OpenLDAP Software.
+ */
+
+#ifndef REWRITE_H
+#define REWRITE_H
+
+/*
+ * Default rewrite context
+ */
+#define REWRITE_DEFAULT_CONTEXT		"default"
+
+/*
+ * Rewrite engine states
+ */
+#define REWRITE_OFF			0x0000
+#define REWRITE_ON			0x0001
+#define REWRITE_DEFAULT			REWRITE_OFF
+
+/*
+ * Rewrite internal status returns
+ */
+#define REWRITE_SUCCESS			LDAP_SUCCESS
+#define REWRITE_ERR			LDAP_OTHER
+
+/*
+ * Rewrite modes (input values for rewrite_info_init); determine the
+ * behavior in case a null or non existent context is required:
+ *
+ * 	REWRITE_MODE_ERR		error
+ * 	REWRITE_MODE_OK			no error but no rewrite
+ * 	REWRITE_MODE_COPY_INPUT		a copy of the input is returned
+ * 	REWRITE_MODE_USE_DEFAULT	the default context is used.
+ */
+#define REWRITE_MODE_ERR		0x0010
+#define REWRITE_MODE_OK			0x0011
+#define REWRITE_MODE_COPY_INPUT		0x0012
+#define REWRITE_MODE_USE_DEFAULT	0x0013
+
+/*
+ * Rewrite status returns
+ *
+ * 	REWRITE_REGEXEC_OK		success (result may be empty in case
+ * 					of no match)
+ * 	REWRITE_REGEXEC_ERR		error (internal error,
+ * 					misconfiguration, map not working ...)
+ * 	REWRITE_REGEXEC_STOP		internal use; never returned
+ * 	REWRITE_REGEXEC_UNWILLING	the server should issue an 'unwilling
+ * 					to perform' error
+ */
+#define REWRITE_REGEXEC_OK              (0)
+#define REWRITE_REGEXEC_ERR             (-1)
+#define REWRITE_REGEXEC_STOP            (-2)
+#define REWRITE_REGEXEC_UNWILLING       (-3)
+#define REWRITE_REGEXEC_USER		(1)	/* and above: LDAP errors */
+
+/*
+ * Rewrite variable flags
+ *	REWRITE_VAR_INSERT		insert mode (default) when adding
+ *					a variable; if not set during value
+ *					update, the variable is not inserted
+ *					if not present
+ *	REWRITE_VAR_UPDATE		update mode (default) when updating
+ *					a variable; if not set during insert,
+ *					the value is not updated if the
+ *					variable already exists
+ *	REWRITE_VAR_COPY_NAME		copy the variable name; if not set,
+ *					the name is not copied; be sure the
+ *					referenced string is available for
+ *					the entire life scope of the variable.
+ *	REWRITE_VAR_COPY_VALUE		copy the variable value; if not set,
+ *					the value is not copied; be sure the
+ *					referenced string is available for
+ *					the entire life scope of the variable.
+ */
+#define REWRITE_VAR_NONE		0x0000
+#define REWRITE_VAR_INSERT		0x0001
+#define REWRITE_VAR_UPDATE		0x0002
+#define REWRITE_VAR_COPY_NAME		0x0004
+#define REWRITE_VAR_COPY_VALUE		0x0008
+
+/*
+ * Rewrite info
+ */
+struct rewrite_info;
+
+struct berval; /* avoid include */
+
+LDAP_BEGIN_DECL
+
+/*
+ * Inits the info
+ */
+LDAP_REWRITE_F (struct rewrite_info *)
+rewrite_info_init(
+		int mode
+);
+
+/*
+ * Cleans up the info structure
+ */
+LDAP_REWRITE_F (int)
+rewrite_info_delete(
+                struct rewrite_info **info
+);
+
+
+/*
+ * Parses a config line and takes actions to fit content in rewrite structure;
+ * lines handled are of the form:
+ *
+ *      rewriteEngine 		{on|off}
+ *      rewriteMaxPasses	numPasses
+ *      rewriteContext 		contextName [alias aliasedRewriteContex]
+ *      rewriteRule 		pattern substPattern [ruleFlags]
+ *      rewriteMap 		mapType mapName [mapArgs]
+ *      rewriteParam		paramName paramValue
+ */
+LDAP_REWRITE_F (int)
+rewrite_parse(
+		struct rewrite_info *info,
+                const char *fname,
+                int lineno,
+                int argc,
+                char **argv
+);
+
+/*
+ * process a config file that was already opened. Uses rewrite_parse.
+ */
+LDAP_REWRITE_F (int)
+rewrite_read(
+		FILE *fin,
+		struct rewrite_info *info
+);
+
+/*
+ * Rewrites a string according to context.
+ * If the engine is off, OK is returned, but the return string will be NULL.
+ * In case of 'unwilling to perform', UNWILLING is returned, and the
+ * return string will also be null. The same in case of error.
+ * Otherwise, OK is returned, and result will hold a newly allocated string
+ * with the rewriting.
+ *
+ * What to do in case of non-existing rewrite context is still an issue.
+ * Four possibilities:
+ *      - error,
+ *      - ok with NULL result,
+ *      - ok with copy of string as result,
+ *      - use the default rewrite context.
+ */
+LDAP_REWRITE_F (int)
+rewrite(
+		struct rewrite_info *info,
+		const char *rewriteContext,
+		const char *string,
+		char **result
+);
+
+/*
+ * Same as above; the cookie relates the rewrite to a session
+ */
+LDAP_REWRITE_F (int)
+rewrite_session(
+		struct rewrite_info *info,
+		const char *rewriteContext,
+		const char *string,
+		const void *cookie,
+		char **result
+);
+
+/*
+ * Inits a session
+ */
+LDAP_REWRITE_F (struct rewrite_session *)
+rewrite_session_init(
+                struct rewrite_info *info,
+                const void *cookie
+);
+
+/*
+ * Defines and inits a variable with session scope
+ */
+LDAP_REWRITE_F (int)
+rewrite_session_var_set_f(
+		struct rewrite_info *info,
+		const void *cookie,
+		const char *name,
+		const char *value,
+		int flags
+);
+
+#define rewrite_session_var_set(info, cookie, name, value) \
+	rewrite_session_var_set_f((info), (cookie), (name), (value), \
+			REWRITE_VAR_INSERT|REWRITE_VAR_UPDATE|REWRITE_VAR_COPY_NAME|REWRITE_VAR_COPY_VALUE)
+
+/*
+ * Deletes a session
+ */
+LDAP_REWRITE_F (int)
+rewrite_session_delete(
+		struct rewrite_info *info,
+		const void *cookie
+);
+
+
+/*
+ * Params
+ */
+
+/*
+ * Defines and inits a variable with global scope
+ */
+LDAP_REWRITE_F (int)
+rewrite_param_set(
+                struct rewrite_info *info,
+                const char *name,
+                const char *value
+);
+
+/*
+ * Gets a var with global scope
+ */
+LDAP_REWRITE_F (int)
+rewrite_param_get(
+                struct rewrite_info *info,
+                const char *name,
+                struct berval *value
+);
+
+/*
+ * Destroys the parameter tree
+ */
+LDAP_REWRITE_F (int)
+rewrite_param_destroy(
+                struct rewrite_info *info
+);
+
+/*
+ * Mapping implementations
+ */
+
+struct rewrite_mapper;
+
+typedef void * (rewrite_mapper_config)(
+	const char *fname,
+	int lineno,
+	int argc,
+	char **argv );
+
+typedef int (rewrite_mapper_apply)(
+	void *ctx,
+	const char *arg,
+	struct berval *retval );
+
+typedef int (rewrite_mapper_destroy)(
+	void *ctx );
+
+typedef struct rewrite_mapper {
+	char *rm_name;
+	rewrite_mapper_config *rm_config;
+	rewrite_mapper_apply *rm_apply;
+	rewrite_mapper_destroy *rm_destroy;
+} rewrite_mapper;
+
+/* For dynamic loading and unloading of mappers */
+LDAP_REWRITE_F (int)
+rewrite_mapper_register(
+	const rewrite_mapper *map );
+
+LDAP_REWRITE_F (int)
+rewrite_mapper_unregister(
+	const rewrite_mapper *map );
+
+LDAP_REWRITE_F (const rewrite_mapper *)
+rewrite_mapper_find(
+	const char *name );
+
+LDAP_END_DECL
+
+#endif /* REWRITE_H */