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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/global/split_addr.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/split_addr.c')
-rw-r--r--src/global/split_addr.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/global/split_addr.c b/src/global/split_addr.c
new file mode 100644
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--- /dev/null
+++ b/src/global/split_addr.c
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+/*++
+/* NAME
+/* split_addr 3
+/* SUMMARY
+/* recipient localpart address splitter
+/* SYNOPSIS
+/* #include <split_addr.h>
+/*
+/* char *split_addr_internal(localpart, delimiter_set)
+/* char *localpart;
+/* const char *delimiter_set;
+/* LEGACY SUPPORT
+/* char *split_addr(localpart, delimiter_set)
+/* char *localpart;
+/* const char *delimiter_set;
+/* DESCRIPTION
+/* split_addr*() null-terminates \fIlocalpart\fR at the first
+/* occurrence of the \fIdelimiter\fR character(s) found, and
+/* returns a pointer to the remainder.
+/*
+/* With split_addr_internal(), the address must be in internal
+/* (unquoted) form.
+/*
+/* split_addr() is a backwards-compatible form for legacy code.
+/*
+/* Reserved addresses are not split: postmaster, mailer-daemon,
+/* double-bounce. Addresses that begin with owner-, or addresses
+/* that end in -request are not split when the owner_request_special
+/* parameter is set.
+/* 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>
+
+#ifdef STRCASECMP_IN_STRINGS_H
+#include <strings.h>
+#endif
+
+/* Utility library. */
+
+#include <split_at.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <mail_params.h>
+#include <mail_addr.h>
+#include <split_addr.h>
+
+/* split_addr_internal - split address with extreme prejudice */
+
+char *split_addr_internal(char *localpart, const char *delimiter_set)
+{
+ ssize_t len;
+
+ /*
+ * Don't split these, regardless of what the delimiter is.
+ */
+ if (strcasecmp(localpart, MAIL_ADDR_POSTMASTER) == 0)
+ return (0);
+ if (strcasecmp(localpart, MAIL_ADDR_MAIL_DAEMON) == 0)
+ return (0);
+ if (strcasecmp_utf8(localpart, var_double_bounce_sender) == 0)
+ return (0);
+
+ /*
+ * Backwards compatibility: don't split owner-foo or foo-request.
+ */
+ if (strchr(delimiter_set, '-') != 0 && var_ownreq_special != 0) {
+ if (strncasecmp(localpart, "owner-", 6) == 0)
+ return (0);
+ if ((len = strlen(localpart) - 8) > 0
+ && strcasecmp(localpart + len, "-request") == 0)
+ return (0);
+ }
+
+ /*
+ * Safe to split this address. Do not split the address if the result
+ * would have a null localpart.
+ */
+ if ((len = strcspn(localpart, delimiter_set)) == 0 || localpart[len] == 0) {
+ return (0);
+ } else {
+ localpart[len] = 0;
+ return (localpart + len + 1);
+ }
+}