cleanup_out_recipient.c   [plain text]

/*++
/* NAME
/*	cleanup_out_recipient 3
/* SUMMARY
/*	envelope recipient output filter
/* SYNOPSIS
/*	#include "cleanup.h"
/*
/*	void	cleanup_out_recipient(state, orig_recipient, recipient)
/*	CLEANUP_STATE *state;
/*	const char *orig_recipient;
/*	const char *recipient;
/* DESCRIPTION
/*	This module implements an envelope recipient output filter.
/*
/*	cleanup_out_recipient() performs virtual table expansion
/*	and recipient duplicate filtering, and appends the
/*	resulting recipients to the output stream.
/* CONFIGURATION
/* .ad
/* .fi
/* .IP local_duplicate_filter_limit
/*	Upper bound to the size of the recipient duplicate filter.
/*	Zero means no limit; this may cause the mail system to
/*	become stuck.
/* .IP virtual_alias_maps
/*	list of virtual address lookup tables.
/* 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>

#ifdef STRCASECMP_IN_STRINGS_H
#include <strings.h>
#endif

/* Utility library. */

#include <argv.h>

/* Global library. */

#include <been_here.h>
#include <mail_params.h>
#include <rec_type.h>
#include <ext_prop.h>
#include <cleanup_user.h>

/* Application-specific. */

#include "cleanup.h"

/* cleanup_out_recipient - envelope recipient output filter */

void    cleanup_out_recipient(CLEANUP_STATE *state, const char *orcpt,
			              const char *recip)
{
    ARGV   *argv;
    char  **cpp;

    /*
     * XXX Not elegant, but eliminates complexity in the record reading loop.
     */
    if (!var_enable_orcpt)
	orcpt = "";

    /*
     * Distinguish between different original recipient addresses that map
     * onto the same mailbox. The recipient will use our original recipient
     * message header to figure things out.
     */
#define STREQ(x, y) (strcmp((x), (y)) == 0)

    if ((state->flags & CLEANUP_FLAG_MAP_OK) == 0
	|| cleanup_virt_alias_maps == 0) {
	if ((STREQ(orcpt, recip) ? been_here(state->dups, "%s", orcpt) :
	     been_here(state->dups, "%s\n%s", orcpt, recip)) == 0) {
	    cleanup_out_string(state, REC_TYPE_ORCP, orcpt);
	    cleanup_out_string(state, REC_TYPE_RCPT, recip);
	    state->rcpt_count++;
	}
    } else {
	argv = cleanup_map1n_internal(state, recip, cleanup_virt_alias_maps,
				  cleanup_ext_prop_mask & EXT_PROP_VIRTUAL);
	for (cpp = argv->argv; *cpp; cpp++) {
	    if ((STREQ(orcpt, *cpp) ? been_here(state->dups, "%s", orcpt) :
		 been_here(state->dups, "%s\n%s", orcpt, *cpp)) == 0) {
		cleanup_out_string(state, REC_TYPE_ORCP, orcpt);
		cleanup_out_string(state, REC_TYPE_RCPT, *cpp);
		state->rcpt_count++;
	    }
	}
	argv_free(argv);
    }
}