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+/*++
+/* NAME
+/* local_expand 3
+/* SUMMARY
+/* set up attribute list for $name expansion
+/* SYNOPSIS
+/* #include "local.h"
+/*
+/* int local_expand(result, pattern, state, usr_attr, filter)
+/* VSTRING *result;
+/* const char *pattern;
+/* LOCAL_STATE state;
+/* USER_ATTR usr_attr;
+/* const char *filter;
+/* DESCRIPTION
+/* local_expand() performs conditional and unconditional $name
+/* expansion based on message delivery attributes.
+/* The result is the bitwise OR or zero or more of the following:
+/* .IP LOCAL_EXP_EXTENSION_MATCHED
+/* The result of expansion contains the $extension attribute.
+/* .IP MAC_PARSE_XXX
+/* See mac_parse(3).
+/* .PP
+/* Attributes:
+/* .IP client_address
+/* The client network address.
+/* .IP client_helo
+/* The client HELO command parameter.
+/* .IP client_hostname
+/* The client hostname.
+/* .IP client_protocol
+/* The client protocol.
+/* .IP domain
+/* The recipient address domain.
+/* .IP extension
+/* The recipient address extension.
+/* .IP home
+/* The recipient home directory.
+/* .IP local
+/* The entire recipient address localpart.
+/* .IP recipient
+/* The entire recipient address.
+/* .IP recipient_delimiter
+/* The recipient delimiter.
+/* .IP shell
+/* The recipient shell program.
+/* .IP sasl_method
+/* The SASL authentication method.
+/* .IP sasl_sender
+/* The SASL MAIL FROM address.
+/* .IP sasl_username
+/* The SASL login name.
+/* .IP user
+/* The recipient user name.
+/* .PP
+/* Arguments:
+/* .IP result
+/* Storage for the result of expansion. The buffer is truncated
+/* upon entry.
+/* .IP pattern
+/* The string with unconditional and conditional macro expansions.
+/* .IP state
+/* Message delivery attributes (sender, recipient etc.).
+/* Attributes describing alias, include or forward expansion.
+/* A table with the results from expanding aliases or lists.
+/* A table with delivered-to: addresses taken from the message.
+/* .IP usr_attr
+/* Attributes describing user rights and environment.
+/* .IP filter
+/* A null pointer, or a string of allowed characters in $name
+/* expansions. Illegal characters are replaced by underscores.
+/* DIAGNOSTICS
+/* Fatal errors: out of memory.
+/* SEE ALSO
+/* mac_expand(3) macro expansion
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <vstring.h>
+#include <mac_expand.h>
+
+/* Global library */
+
+#include <mail_params.h>
+
+/* Application-specific. */
+
+#include "local.h"
+
+typedef struct {
+ LOCAL_STATE *state;
+ USER_ATTR *usr_attr;
+ int status;
+} LOCAL_EXP;
+
+/* local_expand_lookup - mac_expand() lookup routine */
+
+static const char *local_expand_lookup(const char *name, int mode, void *ptr)
+{
+ LOCAL_EXP *local = (LOCAL_EXP *) ptr;
+ static char rcpt_delim[2];
+
+#define STREQ(x,y) (*(x) == *(y) && strcmp((x), (y)) == 0)
+
+ if (STREQ(name, "user")) {
+ return (local->state->msg_attr.user);
+ } else if (STREQ(name, "home")) {
+ return (local->usr_attr->home);
+ } else if (STREQ(name, "shell")) {
+ return (local->usr_attr->shell);
+ } else if (STREQ(name, "domain")) {
+ return (local->state->msg_attr.domain);
+ } else if (STREQ(name, "local")) {
+ return (local->state->msg_attr.local);
+ } else if (STREQ(name, "mailbox")) {
+ return (local->state->msg_attr.local);
+ } else if (STREQ(name, "recipient")) {
+ return (local->state->msg_attr.rcpt.address);
+ } else if (STREQ(name, "extension")) {
+ if (mode == MAC_EXP_MODE_USE)
+ local->status |= LOCAL_EXP_EXTENSION_MATCHED;
+ return (local->state->msg_attr.extension);
+ } else if (STREQ(name, "recipient_delimiter")) {
+ rcpt_delim[0] =
+ local->state->msg_attr.local[strlen(local->state->msg_attr.user)];
+ rcpt_delim[1] = 0;
+ return (rcpt_delim[0] ? rcpt_delim : 0);
+#if 0
+ } else if (STREQ(name, "client_hostname")) {
+ return (local->state->msg_attr.request->client_name);
+ } else if (STREQ(name, "client_address")) {
+ return (local->state->msg_attr.request->client_addr);
+ } else if (STREQ(name, "client_protocol")) {
+ return (local->state->msg_attr.request->client_proto);
+ } else if (STREQ(name, "client_helo")) {
+ return (local->state->msg_attr.request->client_helo);
+ } else if (STREQ(name, "sasl_method")) {
+ return (local->state->msg_attr.request->sasl_method);
+ } else if (STREQ(name, "sasl_sender")) {
+ return (local->state->msg_attr.request->sasl_sender);
+ } else if (STREQ(name, "sasl_username")) {
+ return (local->state->msg_attr.request->sasl_username);
+#endif
+ } else {
+ return (0);
+ }
+}
+
+/* local_expand - expand message delivery attributes */
+
+int local_expand(VSTRING *result, const char *pattern,
+ LOCAL_STATE *state, USER_ATTR *usr_attr, const char *filter)
+{
+ LOCAL_EXP local;
+ int expand_status;
+
+ local.state = state;
+ local.usr_attr = usr_attr;
+ local.status = 0;
+ expand_status = mac_expand(result, pattern, MAC_EXP_FLAG_NONE,
+ filter, local_expand_lookup, (void *) &local);
+ return (local.status | expand_status);
+}