Adding upstream version 3.8.5.upstream/3.8.5

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

1 files changed, 182 insertions, 0 deletions

diff --git a/src/cleanup/cleanup_map1n.c b/src/cleanup/cleanup_map1n.c
new file mode 100644
index 0000000..2c8413b
--- /dev/null
+++ b/src/cleanup/cleanup_map1n.c
@@ -0,0 +1,182 @@
+/*++
+/* NAME
+/*	cleanup_map1n 3
+/* SUMMARY
+/*	one-to-many address mapping
+/* SYNOPSIS
+/*	#include <cleanup.h>
+/*
+/*	ARGV	*cleanup_map1n_internal(state, addr, maps, propagate)
+/*	CLEANUP_STATE *state;
+/*	const char *addr;
+/*	MAPS	*maps;
+/*	int	propagate;
+/* DESCRIPTION
+/*	This module implements one-to-many table mapping via table lookup.
+/*	Table lookups are done with quoted (externalized) address forms.
+/*	The process is recursive. The recursion terminates when the
+/*	left-hand side appears in its own expansion.
+/*
+/*	cleanup_map1n_internal() is the interface for addresses in
+/*	internal (unquoted) form.
+/* DIAGNOSTICS
+/*	When the maximal expansion or recursion limit is reached,
+/*	the alias is not expanded and the CLEANUP_STAT_DEFER error
+/*	is raised with reason "4.6.0 Alias expansion error".
+/*
+/*	When table lookup fails, the alias is not expanded and the
+/*	CLEANUP_STAT_WRITE error is raised with reason "4.6.0 Alias
+/*	expansion error".
+/* SEE ALSO
+/*	mail_addr_map(3) address mappings
+/*	mail_addr_find(3) address lookups
+/* 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
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <mymalloc.h>
+#include <msg.h>
+#include <argv.h>
+#include <vstring.h>
+#include <dict.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <mail_params.h>
+#include <mail_addr_map.h>
+#include <cleanup_user.h>
+#include <quote_822_local.h>
+#include <been_here.h>
+
+/* Application-specific. */
+
+#include "cleanup.h"
+
+/* cleanup_map1n_internal - one-to-many table lookups */
+
+ARGV   *cleanup_map1n_internal(CLEANUP_STATE *state, const char *addr,
+			               MAPS *maps, int propagate)
+{
+    ARGV   *argv;
+    ARGV   *lookup;
+    int     count;
+    int     i;
+    int     arg;
+    BH_TABLE *been_here;
+    char   *saved_lhs;
+
+    /*
+     * Initialize.
+     */
+    argv = argv_alloc(1);
+    argv_add(argv, addr, ARGV_END);
+    argv_terminate(argv);
+    been_here = been_here_init(0, BH_FLAG_FOLD);
+
+    /*
+     * Rewrite the address vector in place. With each map lookup result,
+     * split it into separate addresses, then rewrite and flatten each
+     * address, and repeat the process. Beware: argv is being changed, so we
+     * must index the array explicitly, instead of running along it with a
+     * pointer.
+     */
+#define UPDATE(ptr,new)	do { \
+	if (ptr) { myfree(ptr); } ptr = mystrdup(new); \
+    } while (0)
+#define STR	vstring_str
+#define RETURN(x) do { \
+	been_here_free(been_here); return (x); \
+    } while (0)
+#define UNEXPAND(argv, addr) do { \
+	argv_truncate((argv), 0); argv_add((argv), (addr), (char *) 0); \
+    } while (0)
+
+    for (arg = 0; arg < argv->argc; arg++) {
+	if (argv->argc > var_virt_expan_limit) {
+	    msg_warn("%s: unreasonable %s map expansion size for %s -- "
+		     "message not accepted, try again later",
+		     state->queue_id, maps->title, addr);
+	    state->errs |= CLEANUP_STAT_DEFER;
+	    UPDATE(state->reason, "4.6.0 Alias expansion error");
+	    UNEXPAND(argv, addr);
+	    RETURN(argv);
+	}
+	for (count = 0; /* void */ ; count++) {
+
+	    /*
+	     * Don't expand an address that already expanded into itself.
+	     */
+	    if (been_here_check_fixed(been_here, argv->argv[arg]) != 0)
+		break;
+	    if (count >= var_virt_recur_limit) {
+		msg_warn("%s: unreasonable %s map nesting for %s -- "
+			 "message not accepted, try again later",
+			 state->queue_id, maps->title, addr);
+		state->errs |= CLEANUP_STAT_DEFER;
+		UPDATE(state->reason, "4.6.0 Alias expansion error");
+		UNEXPAND(argv, addr);
+		RETURN(argv);
+	    }
+	    if ((lookup = mail_addr_map_internal(maps, argv->argv[arg],
+						 propagate)) != 0) {
+		saved_lhs = mystrdup(argv->argv[arg]);
+		for (i = 0; i < lookup->argc; i++) {
+		    if (strlen(lookup->argv[i]) > var_virt_addrlen_limit) {
+			msg_warn("%s: unreasonable %s result %.300s... -- "
+				 "message not accepted, try again later",
+			     state->queue_id, maps->title, lookup->argv[i]);
+			state->errs |= CLEANUP_STAT_DEFER;
+			UPDATE(state->reason, "4.6.0 Alias expansion error");
+			UNEXPAND(argv, addr);
+			RETURN(argv);
+		    }
+		    if (i == 0) {
+			UPDATE(argv->argv[arg], lookup->argv[i]);
+		    } else {
+			argv_add(argv, lookup->argv[i], ARGV_END);
+			argv_terminate(argv);
+		    }
+
+		    /*
+		     * Allow an address to expand into itself once.
+		     */
+		    if (strcasecmp_utf8(saved_lhs, lookup->argv[i]) == 0)
+			been_here_fixed(been_here, saved_lhs);
+		}
+		myfree(saved_lhs);
+		argv_free(lookup);
+	    } else if (maps->error != 0) {
+		msg_warn("%s: %s map lookup problem for %s -- "
+			 "message not accepted, try again later",
+			 state->queue_id, maps->title, addr);
+		state->errs |= CLEANUP_STAT_WRITE;
+		UPDATE(state->reason, "4.6.0 Alias expansion error");
+		UNEXPAND(argv, addr);
+		RETURN(argv);
+	    } else {
+		break;
+	    }
+	}
+    }
+    RETURN(argv);
+}