summaryrefslogtreecommitdiffstats
path: root/src/virtual
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:18:56 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:18:56 +0000
commitb7c15c31519dc44c1f691e0466badd556ffe9423 (patch)
treef944572f288bab482a615e09af627d9a2b6727d8 /src/virtual
parentInitial commit. (diff)
downloadpostfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz
postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/virtual')
l---------src/virtual/.indent.pro1
-rw-r--r--src/virtual/.printfck25
-rw-r--r--src/virtual/Makefile.in234
-rw-r--r--src/virtual/deliver_attr.c90
-rw-r--r--src/virtual/mailbox.c283
-rw-r--r--src/virtual/maildir.c254
-rw-r--r--src/virtual/recipient.c94
-rw-r--r--src/virtual/unknown.c65
-rw-r--r--src/virtual/virtual.c573
-rw-r--r--src/virtual/virtual.h150
10 files changed, 1769 insertions, 0 deletions
diff --git a/src/virtual/.indent.pro b/src/virtual/.indent.pro
new file mode 120000
index 0000000..5c837ec
--- /dev/null
+++ b/src/virtual/.indent.pro
@@ -0,0 +1 @@
+../../.indent.pro \ No newline at end of file
diff --git a/src/virtual/.printfck b/src/virtual/.printfck
new file mode 100644
index 0000000..66016ed
--- /dev/null
+++ b/src/virtual/.printfck
@@ -0,0 +1,25 @@
+been_here_xt 2 0
+bounce_append 5 0
+cleanup_out_format 1 0
+defer_append 5 0
+mail_command 1 0
+mail_print 1 0
+msg_error 0 0
+msg_fatal 0 0
+msg_info 0 0
+msg_panic 0 0
+msg_warn 0 0
+opened 4 0
+post_mail_fprintf 1 0
+qmgr_message_bounce 2 0
+rec_fprintf 2 0
+sent 4 0
+smtp_cmd 1 0
+smtp_mesg_fail 2 0
+smtp_printf 1 0
+smtp_rcpt_fail 3 0
+smtp_site_fail 2 0
+udp_syslog 1 0
+vstream_fprintf 1 0
+vstream_printf 0 0
+vstring_sprintf 1 0
diff --git a/src/virtual/Makefile.in b/src/virtual/Makefile.in
new file mode 100644
index 0000000..31fff0e
--- /dev/null
+++ b/src/virtual/Makefile.in
@@ -0,0 +1,234 @@
+SHELL = /bin/sh
+SRCS = virtual.c mailbox.c recipient.c deliver_attr.c maildir.c unknown.c
+OBJS = virtual.o mailbox.o recipient.o deliver_attr.o maildir.o unknown.o
+HDRS = virtual.h
+TESTSRC =
+DEFS = -I. -I$(INC_DIR) -D$(SYSTYPE)
+CFLAGS = $(DEBUG) $(OPT) $(DEFS)
+PROG = virtual
+TESTPROG=
+INC_DIR = ../../include
+LIBS = ../../lib/lib$(LIB_PREFIX)master$(LIB_SUFFIX) \
+ ../../lib/lib$(LIB_PREFIX)global$(LIB_SUFFIX) \
+ ../../lib/lib$(LIB_PREFIX)util$(LIB_SUFFIX)
+
+.c.o:; $(CC) $(CFLAGS) -c $*.c
+
+$(PROG): $(OBJS) $(LIBS)
+ $(CC) $(CFLAGS) $(SHLIB_RPATH) -o $@ $(OBJS) $(LIBS) $(SYSLIBS)
+
+$(OBJS): ../../conf/makedefs.out
+
+Makefile: Makefile.in
+ cat ../../conf/makedefs.out $? >$@
+
+test: $(TESTPROG)
+
+tests:
+
+root_tests:
+
+update: ../../libexec/$(PROG)
+
+../../libexec/$(PROG): $(PROG)
+ cp $(PROG) ../../libexec
+
+printfck: $(OBJS) $(PROG)
+ rm -rf printfck
+ mkdir printfck
+ cp *.h printfck
+ sed '1,/^# do not edit/!d' Makefile >printfck/Makefile
+ set -e; for i in *.c; do printfck -f .printfck $$i >printfck/$$i; done
+ cd printfck; make "INC_DIR=../../../include" `cd ..; ls *.o`
+
+lint:
+ lint $(DEFS) $(SRCS) $(LINTFIX)
+
+clean:
+ rm -f *.o *core $(PROG) $(TESTPROG) junk
+ rm -rf printfck
+
+tidy: clean
+
+depend: $(MAKES)
+ (sed '1,/^# do not edit/!d' Makefile.in; \
+ set -e; for i in [a-z][a-z0-9]*.c; do \
+ $(CC) -E $(DEFS) $(INCL) $$i | grep -v '[<>]' | sed -n -e '/^# *1 *"\([^"]*\)".*/{' \
+ -e 's//'`echo $$i|sed 's/c$$/o/'`': \1/' \
+ -e 's/o: \.\//o: /' -e p -e '}' ; \
+ done | LANG=C sort -u) | grep -v '[.][o][:][ ][/]' >$$$$ && mv $$$$ Makefile.in
+ @$(EXPORT) make -f Makefile.in Makefile 1>&2
+
+# do not edit below this line - it is generated by 'make depend'
+deliver_attr.o: ../../include/argv.h
+deliver_attr.o: ../../include/attr.h
+deliver_attr.o: ../../include/check_arg.h
+deliver_attr.o: ../../include/deliver_request.h
+deliver_attr.o: ../../include/dict.h
+deliver_attr.o: ../../include/dsn.h
+deliver_attr.o: ../../include/dsn_buf.h
+deliver_attr.o: ../../include/htable.h
+deliver_attr.o: ../../include/maps.h
+deliver_attr.o: ../../include/mbox_conf.h
+deliver_attr.o: ../../include/msg.h
+deliver_attr.o: ../../include/msg_stats.h
+deliver_attr.o: ../../include/myflock.h
+deliver_attr.o: ../../include/mymalloc.h
+deliver_attr.o: ../../include/nvtable.h
+deliver_attr.o: ../../include/recipient_list.h
+deliver_attr.o: ../../include/sys_defs.h
+deliver_attr.o: ../../include/vbuf.h
+deliver_attr.o: ../../include/vstream.h
+deliver_attr.o: ../../include/vstring.h
+deliver_attr.o: deliver_attr.c
+deliver_attr.o: virtual.h
+mailbox.o: ../../include/argv.h
+mailbox.o: ../../include/attr.h
+mailbox.o: ../../include/bounce.h
+mailbox.o: ../../include/check_arg.h
+mailbox.o: ../../include/defer.h
+mailbox.o: ../../include/deliver_request.h
+mailbox.o: ../../include/dict.h
+mailbox.o: ../../include/dsn.h
+mailbox.o: ../../include/dsn_buf.h
+mailbox.o: ../../include/dsn_util.h
+mailbox.o: ../../include/htable.h
+mailbox.o: ../../include/mail_addr_find.h
+mailbox.o: ../../include/mail_addr_form.h
+mailbox.o: ../../include/mail_copy.h
+mailbox.o: ../../include/mail_params.h
+mailbox.o: ../../include/maps.h
+mailbox.o: ../../include/mbox_conf.h
+mailbox.o: ../../include/mbox_open.h
+mailbox.o: ../../include/msg.h
+mailbox.o: ../../include/msg_stats.h
+mailbox.o: ../../include/myflock.h
+mailbox.o: ../../include/mymalloc.h
+mailbox.o: ../../include/nvtable.h
+mailbox.o: ../../include/recipient_list.h
+mailbox.o: ../../include/safe_open.h
+mailbox.o: ../../include/sent.h
+mailbox.o: ../../include/set_eugid.h
+mailbox.o: ../../include/stringops.h
+mailbox.o: ../../include/sys_defs.h
+mailbox.o: ../../include/vbuf.h
+mailbox.o: ../../include/vstream.h
+mailbox.o: ../../include/vstring.h
+mailbox.o: mailbox.c
+mailbox.o: virtual.h
+maildir.o: ../../include/argv.h
+maildir.o: ../../include/attr.h
+maildir.o: ../../include/bounce.h
+maildir.o: ../../include/check_arg.h
+maildir.o: ../../include/defer.h
+maildir.o: ../../include/deliver_request.h
+maildir.o: ../../include/dict.h
+maildir.o: ../../include/dsn.h
+maildir.o: ../../include/dsn_buf.h
+maildir.o: ../../include/dsn_util.h
+maildir.o: ../../include/get_hostname.h
+maildir.o: ../../include/htable.h
+maildir.o: ../../include/mail_copy.h
+maildir.o: ../../include/mail_params.h
+maildir.o: ../../include/make_dirs.h
+maildir.o: ../../include/maps.h
+maildir.o: ../../include/mbox_conf.h
+maildir.o: ../../include/mbox_open.h
+maildir.o: ../../include/msg.h
+maildir.o: ../../include/msg_stats.h
+maildir.o: ../../include/myflock.h
+maildir.o: ../../include/mymalloc.h
+maildir.o: ../../include/nvtable.h
+maildir.o: ../../include/recipient_list.h
+maildir.o: ../../include/safe_open.h
+maildir.o: ../../include/sane_fsops.h
+maildir.o: ../../include/sent.h
+maildir.o: ../../include/set_eugid.h
+maildir.o: ../../include/stringops.h
+maildir.o: ../../include/sys_defs.h
+maildir.o: ../../include/vbuf.h
+maildir.o: ../../include/vstream.h
+maildir.o: ../../include/vstring.h
+maildir.o: ../../include/warn_stat.h
+maildir.o: maildir.c
+maildir.o: virtual.h
+recipient.o: ../../include/argv.h
+recipient.o: ../../include/attr.h
+recipient.o: ../../include/bounce.h
+recipient.o: ../../include/check_arg.h
+recipient.o: ../../include/deliver_request.h
+recipient.o: ../../include/dict.h
+recipient.o: ../../include/dsn.h
+recipient.o: ../../include/dsn_buf.h
+recipient.o: ../../include/htable.h
+recipient.o: ../../include/maps.h
+recipient.o: ../../include/mbox_conf.h
+recipient.o: ../../include/msg.h
+recipient.o: ../../include/msg_stats.h
+recipient.o: ../../include/myflock.h
+recipient.o: ../../include/mymalloc.h
+recipient.o: ../../include/nvtable.h
+recipient.o: ../../include/recipient_list.h
+recipient.o: ../../include/stringops.h
+recipient.o: ../../include/sys_defs.h
+recipient.o: ../../include/vbuf.h
+recipient.o: ../../include/vstream.h
+recipient.o: ../../include/vstring.h
+recipient.o: recipient.c
+recipient.o: virtual.h
+unknown.o: ../../include/argv.h
+unknown.o: ../../include/attr.h
+unknown.o: ../../include/bounce.h
+unknown.o: ../../include/check_arg.h
+unknown.o: ../../include/deliver_request.h
+unknown.o: ../../include/dict.h
+unknown.o: ../../include/dsn.h
+unknown.o: ../../include/dsn_buf.h
+unknown.o: ../../include/htable.h
+unknown.o: ../../include/maps.h
+unknown.o: ../../include/mbox_conf.h
+unknown.o: ../../include/msg.h
+unknown.o: ../../include/msg_stats.h
+unknown.o: ../../include/myflock.h
+unknown.o: ../../include/mymalloc.h
+unknown.o: ../../include/nvtable.h
+unknown.o: ../../include/recipient_list.h
+unknown.o: ../../include/sys_defs.h
+unknown.o: ../../include/vbuf.h
+unknown.o: ../../include/vstream.h
+unknown.o: ../../include/vstring.h
+unknown.o: unknown.c
+unknown.o: virtual.h
+virtual.o: ../../include/argv.h
+virtual.o: ../../include/attr.h
+virtual.o: ../../include/check_arg.h
+virtual.o: ../../include/deliver_completed.h
+virtual.o: ../../include/deliver_request.h
+virtual.o: ../../include/dict.h
+virtual.o: ../../include/dsn.h
+virtual.o: ../../include/dsn_buf.h
+virtual.o: ../../include/flush_clnt.h
+virtual.o: ../../include/htable.h
+virtual.o: ../../include/iostuff.h
+virtual.o: ../../include/mail_addr_find.h
+virtual.o: ../../include/mail_addr_form.h
+virtual.o: ../../include/mail_conf.h
+virtual.o: ../../include/mail_params.h
+virtual.o: ../../include/mail_queue.h
+virtual.o: ../../include/mail_server.h
+virtual.o: ../../include/mail_version.h
+virtual.o: ../../include/maps.h
+virtual.o: ../../include/mbox_conf.h
+virtual.o: ../../include/msg.h
+virtual.o: ../../include/msg_stats.h
+virtual.o: ../../include/myflock.h
+virtual.o: ../../include/mymalloc.h
+virtual.o: ../../include/nvtable.h
+virtual.o: ../../include/recipient_list.h
+virtual.o: ../../include/set_eugid.h
+virtual.o: ../../include/sys_defs.h
+virtual.o: ../../include/vbuf.h
+virtual.o: ../../include/vstream.h
+virtual.o: ../../include/vstring.h
+virtual.o: virtual.c
+virtual.o: virtual.h
diff --git a/src/virtual/deliver_attr.c b/src/virtual/deliver_attr.c
new file mode 100644
index 0000000..3a5c0af
--- /dev/null
+++ b/src/virtual/deliver_attr.c
@@ -0,0 +1,90 @@
+/*++
+/* NAME
+/* deliver_attr 3
+/* SUMMARY
+/* initialize message delivery attributes
+/* SYNOPSIS
+/* #include "virtual.h"
+/*
+/* void deliver_attr_init(attrp)
+/* DELIVER_ATTR *attrp;
+/*
+/* void deliver_attr_dump(attrp)
+/* DELIVER_ATTR *attrp;
+/*
+/* void deliver_attr_free(attrp)
+/* DELIVER_ATTR *attrp;
+/* DESCRIPTION
+/* deliver_attr_init() initializes a structure with message delivery
+/* attributes to a known initial state (all zeros).
+/*
+/* deliver_attr_dump() logs the contents of the given attribute list.
+/*
+/* deliver_attr_free() releases memory that was allocated by
+/* deliver_attr_init().
+/* 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>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstream.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+/* deliver_attr_init - set message delivery attributes to all-zero state */
+
+void deliver_attr_init(DELIVER_ATTR *attrp)
+{
+ attrp->level = 0;
+ attrp->fp = 0;
+ attrp->queue_name = 0;
+ attrp->queue_id = 0;
+ attrp->offset = 0;
+ attrp->sender = 0;
+ RECIPIENT_ASSIGN(&(attrp->rcpt), 0, 0, 0, 0, 0);
+ attrp->user = 0;
+ attrp->delivered = 0;
+ attrp->relay = 0;
+ attrp->why = dsb_create();
+}
+
+/* deliver_attr_dump - log message delivery attributes */
+
+void deliver_attr_dump(DELIVER_ATTR *attrp)
+{
+ msg_info("level: %d", attrp->level);
+ msg_info("path: %s", VSTREAM_PATH(attrp->fp));
+ msg_info("fp: 0x%lx", (long) attrp->fp);
+ msg_info("queue_name: %s", attrp->queue_name ? attrp->queue_name : "null");
+ msg_info("queue_id: %s", attrp->queue_id ? attrp->queue_id : "null");
+ msg_info("offset: %ld", attrp->offset);
+ msg_info("sender: %s", attrp->sender ? attrp->sender : "null");
+ msg_info("recipient: %s", attrp->rcpt.address ? attrp->rcpt.address : "null");
+ msg_info("user: %s", attrp->user ? attrp->user : "null");
+ msg_info("delivered: %s", attrp->delivered ? attrp->delivered : "null");
+ msg_info("relay: %s", attrp->relay ? attrp->relay : "null");
+ msg_info("why: %s", attrp->why ? "buffer" : "null");
+}
+
+
+/* deliver_attr_free - release storage */
+
+void deliver_attr_free(DELIVER_ATTR *attrp)
+{
+ dsb_free(attrp->why);
+}
diff --git a/src/virtual/mailbox.c b/src/virtual/mailbox.c
new file mode 100644
index 0000000..19afca8
--- /dev/null
+++ b/src/virtual/mailbox.c
@@ -0,0 +1,283 @@
+/*++
+/* NAME
+/* mailbox 3
+/* SUMMARY
+/* mailbox delivery
+/* SYNOPSIS
+/* #include "virtual.h"
+/*
+/* int deliver_mailbox(state, usr_attr, statusp)
+/* LOCAL_STATE state;
+/* USER_ATTR usr_attr;
+/* int *statusp;
+/* DESCRIPTION
+/* deliver_mailbox() delivers to UNIX-style mailbox or to maildir.
+/*
+/* A zero result means that the named user was not found.
+/*
+/* Arguments:
+/* .IP state
+/* The attributes that specify the message, recipient and more.
+/* .IP usr_attr
+/* Attributes describing user rights and mailbox location.
+/* .IP statusp
+/* Delivery status: see below.
+/* DIAGNOSTICS
+/* The message delivery status is non-zero when delivery should be tried
+/* again.
+/* 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 <sys/stat.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <mymalloc.h>
+#include <stringops.h>
+#include <set_eugid.h>
+
+/* Global library. */
+
+#include <mail_copy.h>
+#include <mbox_open.h>
+#include <defer.h>
+#include <sent.h>
+#include <mail_params.h>
+#include <mail_addr_find.h>
+#include <dsn_util.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+#define YES 1
+#define NO 0
+
+/* deliver_mailbox_file - deliver to recipient mailbox */
+
+static int deliver_mailbox_file(LOCAL_STATE state, USER_ATTR usr_attr)
+{
+ const char *myname = "deliver_mailbox_file";
+ DSN_BUF *why = state.msg_attr.why;
+ MBOX *mp;
+ int mail_copy_status;
+ int deliver_status;
+ int copy_flags;
+ struct stat st;
+
+ /*
+ * Make verbose logging easier to understand.
+ */
+ state.level++;
+ if (msg_verbose)
+ MSG_LOG_STATE(myname, state);
+
+ /*
+ * Don't deliver trace-only requests.
+ */
+ if (DEL_REQ_TRACE_ONLY(state.request->flags)) {
+ dsb_simple(why, "2.0.0", "delivers to mailbox");
+ return (sent(BOUNCE_FLAGS(state.request),
+ SENT_ATTR(state.msg_attr)));
+ }
+
+ /*
+ * Initialize. Assume the operation will fail. Set the delivered
+ * attribute to reflect the final recipient.
+ */
+ if (vstream_fseek(state.msg_attr.fp, state.msg_attr.offset, SEEK_SET) < 0)
+ msg_fatal("seek message file %s: %m", VSTREAM_PATH(state.msg_attr.fp));
+ state.msg_attr.delivered = state.msg_attr.rcpt.address;
+ mail_copy_status = MAIL_COPY_STAT_WRITE;
+
+ /*
+ * Lock the mailbox and open/create the mailbox file.
+ *
+ * Write the file as the recipient, so that file quota work.
+ */
+ copy_flags = MAIL_COPY_MBOX;
+
+ set_eugid(usr_attr.uid, usr_attr.gid);
+ mp = mbox_open(usr_attr.mailbox, O_APPEND | O_WRONLY | O_CREAT,
+ S_IRUSR | S_IWUSR, &st, -1, -1,
+ virtual_mbox_lock_mask, "4.2.0", why);
+ if (mp != 0) {
+ if (S_ISREG(st.st_mode) == 0) {
+ vstream_fclose(mp->fp);
+ msg_warn("recipient %s: destination %s is not a regular file",
+ state.msg_attr.rcpt.address, usr_attr.mailbox);
+ dsb_simple(why, "5.3.5", "mail system configuration error");
+ } else if (var_strict_mbox_owner && st.st_uid != usr_attr.uid) {
+ vstream_fclose(mp->fp);
+ dsb_simple(why, "4.2.0",
+ "destination %s is not owned by recipient", usr_attr.mailbox);
+ msg_warn("specify \"%s = no\" to ignore mailbox ownership mismatch",
+ VAR_STRICT_MBOX_OWNER);
+ } else {
+ if (vstream_fseek(mp->fp, (off_t) 0, SEEK_END) < 0)
+ msg_fatal("%s: seek mailbox file %s: %m",
+ myname, VSTREAM_PATH(mp->fp));
+ mail_copy_status = mail_copy(COPY_ATTR(state.msg_attr), mp->fp,
+ copy_flags, "\n", why);
+ }
+ mbox_release(mp);
+ }
+ set_eugid(var_owner_uid, var_owner_gid);
+
+ /*
+ * As the mail system, bounce, defer delivery, or report success.
+ */
+ if (mail_copy_status & MAIL_COPY_STAT_CORRUPT) {
+ deliver_status = DEL_STAT_DEFER;
+ } else if (mail_copy_status != 0) {
+ vstring_sprintf_prepend(why->reason, "delivery failed to mailbox %s: ",
+ usr_attr.mailbox);
+ deliver_status =
+ (STR(why->status)[0] == '4' ?
+ defer_append : bounce_append)
+ (BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ } else {
+ dsb_simple(why, "2.0.0", "delivered to mailbox");
+ deliver_status = sent(BOUNCE_FLAGS(state.request),
+ SENT_ATTR(state.msg_attr));
+ }
+ return (deliver_status);
+}
+
+/* deliver_mailbox - deliver to recipient mailbox */
+
+int deliver_mailbox(LOCAL_STATE state, USER_ATTR usr_attr, int *statusp)
+{
+ const char *myname = "deliver_mailbox";
+ const char *mailbox_res;
+ const char *uid_res;
+ const char *gid_res;
+ DSN_BUF *why = state.msg_attr.why;
+ long n;
+
+ /*
+ * Make verbose logging easier to understand.
+ */
+ state.level++;
+ if (msg_verbose)
+ MSG_LOG_STATE(myname, state);
+
+ /*
+ * Sanity check.
+ */
+ if (*var_virt_mailbox_base != '/')
+ msg_fatal("do not specify relative pathname: %s = %s",
+ VAR_VIRT_MAILBOX_BASE, var_virt_mailbox_base);
+
+ /*
+ * Look up the mailbox location. Bounce if not found, defer in case of
+ * trouble.
+ */
+#define IGNORE_EXTENSION ((char **) 0)
+
+ mailbox_res = mail_addr_find(virtual_mailbox_maps, state.msg_attr.user,
+ IGNORE_EXTENSION);
+ if (mailbox_res == 0) {
+ if (virtual_mailbox_maps->error == 0)
+ return (NO);
+ msg_warn("table %s: lookup %s: %m", virtual_mailbox_maps->title,
+ state.msg_attr.user);
+ dsb_simple(why, "4.3.5", "mail system configuration error");
+ *statusp = defer_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ return (YES);
+ }
+ usr_attr.mailbox = concatenate(var_virt_mailbox_base, "/",
+ mailbox_res, (char *) 0);
+
+#define RETURN(res) { myfree(usr_attr.mailbox); return (res); }
+
+ /*
+ * Look up the mailbox owner rights. Defer in case of trouble.
+ */
+ uid_res = mail_addr_find(virtual_uid_maps, state.msg_attr.user,
+ IGNORE_EXTENSION);
+ if (uid_res == 0) {
+ msg_warn("recipient %s: not found in %s",
+ state.msg_attr.user, virtual_uid_maps->title);
+ dsb_simple(why, "4.3.5", "mail system configuration error");
+ *statusp = defer_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ RETURN(YES);
+ }
+ if ((n = atol(uid_res)) < var_virt_minimum_uid) {
+ msg_warn("recipient %s: bad uid %s in %s",
+ state.msg_attr.user, uid_res, virtual_uid_maps->title);
+ dsb_simple(why, "4.3.5", "mail system configuration error");
+ *statusp = defer_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ RETURN(YES);
+ }
+ usr_attr.uid = (uid_t) n;
+
+ /*
+ * Look up the mailbox group rights. Defer in case of trouble.
+ */
+ gid_res = mail_addr_find(virtual_gid_maps, state.msg_attr.user,
+ IGNORE_EXTENSION);
+ if (gid_res == 0) {
+ msg_warn("recipient %s: not found in %s",
+ state.msg_attr.user, virtual_gid_maps->title);
+ dsb_simple(why, "4.3.5", "mail system configuration error");
+ *statusp = defer_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ RETURN(YES);
+ }
+ if ((n = atol(gid_res)) <= 0) {
+ msg_warn("recipient %s: bad gid %s in %s",
+ state.msg_attr.user, gid_res, virtual_gid_maps->title);
+ dsb_simple(why, "4.3.5", "mail system configuration error");
+ *statusp = defer_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ RETURN(YES);
+ }
+ usr_attr.gid = (gid_t) n;
+
+ if (msg_verbose)
+ msg_info("%s[%d]: set user_attr: %s, uid = %u, gid = %u",
+ myname, state.level, usr_attr.mailbox,
+ (unsigned) usr_attr.uid, (unsigned) usr_attr.gid);
+
+ /*
+ * Deliver to mailbox or to maildir.
+ */
+#define LAST_CHAR(s) (s[strlen(s) - 1])
+
+ if (LAST_CHAR(usr_attr.mailbox) == '/')
+ *statusp = deliver_maildir(state, usr_attr);
+ else
+ *statusp = deliver_mailbox_file(state, usr_attr);
+
+ /*
+ * Cleanup.
+ */
+ RETURN(YES);
+}
diff --git a/src/virtual/maildir.c b/src/virtual/maildir.c
new file mode 100644
index 0000000..a677061
--- /dev/null
+++ b/src/virtual/maildir.c
@@ -0,0 +1,254 @@
+/*++
+/* NAME
+/* maildir 3
+/* SUMMARY
+/* delivery to maildir
+/* SYNOPSIS
+/* #include "virtual.h"
+/*
+/* int deliver_maildir(state, usr_attr)
+/* LOCAL_STATE state;
+/* USER_ATTR usr_attr;
+/* DESCRIPTION
+/* deliver_maildir() delivers a message to a qmail-style maildir.
+/*
+/* Arguments:
+/* .IP state
+/* The attributes that specify the message, recipient and more.
+/* .IP usr_attr
+/* Attributes describing user rights and environment information.
+/* DIAGNOSTICS
+/* deliver_maildir() always succeeds or it bounces the message.
+/* SEE ALSO
+/* bounce(3)
+/* 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 <sys/stat.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <stringops.h>
+#include <vstream.h>
+#include <vstring.h>
+#include <make_dirs.h>
+#include <set_eugid.h>
+#include <get_hostname.h>
+#include <sane_fsops.h>
+#include <warn_stat.h>
+
+/* Global library. */
+
+#include <mail_copy.h>
+#include <bounce.h>
+#include <defer.h>
+#include <sent.h>
+#include <mail_params.h>
+#include <mbox_open.h>
+#include <dsn_util.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+/* deliver_maildir - delivery to maildir-style mailbox */
+
+int deliver_maildir(LOCAL_STATE state, USER_ATTR usr_attr)
+{
+ const char *myname = "deliver_maildir";
+ char *newdir;
+ char *tmpdir;
+ char *curdir;
+ char *tmpfile;
+ char *newfile;
+ DSN_BUF *why = state.msg_attr.why;
+ VSTRING *buf;
+ VSTREAM *dst;
+ int mail_copy_status;
+ int deliver_status;
+ int copy_flags;
+ struct stat st;
+ struct timeval starttime;
+
+ GETTIMEOFDAY(&starttime);
+
+ /*
+ * Make verbose logging easier to understand.
+ */
+ state.level++;
+ if (msg_verbose)
+ MSG_LOG_STATE(myname, state);
+
+ /*
+ * Don't deliver trace-only requests.
+ */
+ if (DEL_REQ_TRACE_ONLY(state.request->flags)) {
+ dsb_simple(why, "2.0.0", "delivers to maildir");
+ return (sent(BOUNCE_FLAGS(state.request),
+ SENT_ATTR(state.msg_attr)));
+ }
+
+ /*
+ * Initialize. Assume the operation will fail. Set the delivered
+ * attribute to reflect the final recipient.
+ */
+ if (vstream_fseek(state.msg_attr.fp, state.msg_attr.offset, SEEK_SET) < 0)
+ msg_fatal("seek message file %s: %m", VSTREAM_PATH(state.msg_attr.fp));
+ state.msg_attr.delivered = state.msg_attr.rcpt.address;
+ mail_copy_status = MAIL_COPY_STAT_WRITE;
+ buf = vstring_alloc(100);
+
+ copy_flags = MAIL_COPY_TOFILE | MAIL_COPY_RETURN_PATH
+ | MAIL_COPY_DELIVERED | MAIL_COPY_ORIG_RCPT;
+
+ newdir = concatenate(usr_attr.mailbox, "new/", (char *) 0);
+ tmpdir = concatenate(usr_attr.mailbox, "tmp/", (char *) 0);
+ curdir = concatenate(usr_attr.mailbox, "cur/", (char *) 0);
+
+ /*
+ * Create and write the file as the recipient, so that file quota work.
+ * Create any missing directories on the fly. The file name is chosen
+ * according to ftp://koobera.math.uic.edu/www/proto/maildir.html:
+ *
+ * "A unique name has three pieces, separated by dots. On the left is the
+ * result of time(). On the right is the result of gethostname(). In the
+ * middle is something that doesn't repeat within one second on a single
+ * host. I fork a new process for each delivery, so I just use the
+ * process ID. If you're delivering several messages from one process,
+ * use starttime.pid_count.host, where starttime is the time that your
+ * process started, and count is the number of messages you've
+ * delivered."
+ *
+ * Well, that stopped working on fast machines, and on operating systems
+ * that randomize process ID values. When creating a file in tmp/ we use
+ * the process ID because it still is an exclusive resource. When moving
+ * the file to new/ we use the device number and inode number. I do not
+ * care if this breaks on a remote AFS file system, because people should
+ * know better.
+ *
+ * On January 26, 2003, http://cr.yp.to/proto/maildir.html said:
+ *
+ * A unique name has three pieces, separated by dots. On the left is the
+ * result of time() or the second counter from gettimeofday(). On the
+ * right is the result of gethostname(). (To deal with invalid host
+ * names, replace / with \057 and : with \072.) In the middle is a
+ * delivery identifier, discussed below.
+ *
+ * [...]
+ *
+ * Modern delivery identifiers are created by concatenating enough of the
+ * following strings to guarantee uniqueness:
+ *
+ * [...]
+ *
+ * In, where n is (in hexadecimal) the UNIX inode number of this file.
+ * Unfortunately, inode numbers aren't always available through NFS.
+ *
+ * Vn, where n is (in hexadecimal) the UNIX device number of this file.
+ * Unfortunately, device numbers aren't always available through NFS.
+ * (Device numbers are also not helpful with the standard UNIX
+ * filesystem: a maildir has to be within a single UNIX device for link()
+ * and rename() to work.)
+ *
+ * Mn, where n is (in decimal) the microsecond counter from the same
+ * gettimeofday() used for the left part of the unique name.
+ *
+ * Pn, where n is (in decimal) the process ID.
+ *
+ * [...]
+ */
+ set_eugid(usr_attr.uid, usr_attr.gid);
+ vstring_sprintf(buf, "%lu.P%d.%s",
+ (unsigned long) starttime.tv_sec, var_pid, get_hostname());
+ tmpfile = concatenate(tmpdir, STR(buf), (char *) 0);
+ newfile = 0;
+ if ((dst = vstream_fopen(tmpfile, O_WRONLY | O_CREAT | O_EXCL, 0600)) == 0
+ && (errno != ENOENT
+ || make_dirs(tmpdir, 0700) < 0
+ || (dst = vstream_fopen(tmpfile, O_WRONLY | O_CREAT | O_EXCL, 0600)) == 0)) {
+ dsb_simple(why, mbox_dsn(errno, "4.2.0"),
+ "create maildir file %s: %m", tmpfile);
+ } else if (fstat(vstream_fileno(dst), &st) < 0) {
+
+ /*
+ * Coverity 200604: file descriptor leak in code that never executes.
+ * Code replaced by msg_fatal(), as it is not worthwhile to continue
+ * after an impossible error condition.
+ */
+ msg_fatal("fstat %s: %m", tmpfile);
+ } else {
+ vstring_sprintf(buf, "%lu.V%lxI%lxM%lu.%s",
+ (unsigned long) starttime.tv_sec,
+ (unsigned long) st.st_dev,
+ (unsigned long) st.st_ino,
+ (unsigned long) starttime.tv_usec,
+ get_hostname());
+ newfile = concatenate(newdir, STR(buf), (char *) 0);
+ if ((mail_copy_status = mail_copy(COPY_ATTR(state.msg_attr),
+ dst, copy_flags, "\n",
+ why)) == 0) {
+ if (sane_link(tmpfile, newfile) < 0
+ && (errno != ENOENT
+ || (make_dirs(curdir, 0700), make_dirs(newdir, 0700)) < 0
+ || sane_link(tmpfile, newfile) < 0)) {
+ dsb_simple(why, mbox_dsn(errno, "4.2.0"),
+ "create maildir file %s: %m", newfile);
+ mail_copy_status = MAIL_COPY_STAT_WRITE;
+ }
+ }
+ if (unlink(tmpfile) < 0)
+ msg_warn("remove %s: %m", tmpfile);
+ }
+ set_eugid(var_owner_uid, var_owner_gid);
+
+ /*
+ * The maildir location is controlled by the mail administrator. If
+ * delivery fails, try again later. We would just bounce when the maildir
+ * location possibly under user control.
+ */
+ if (mail_copy_status & MAIL_COPY_STAT_CORRUPT) {
+ deliver_status = DEL_STAT_DEFER;
+ } else if (mail_copy_status != 0) {
+ if (errno == EACCES) {
+ msg_warn("maildir access problem for UID/GID=%lu/%lu: %s",
+ (long) usr_attr.uid, (long) usr_attr.gid,
+ STR(why->reason));
+ msg_warn("perhaps you need to create the maildirs in advance");
+ }
+ vstring_sprintf_prepend(why->reason, "maildir delivery failed: ");
+ deliver_status =
+ (STR(why->status)[0] == '4' ?
+ defer_append : bounce_append)
+ (BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr));
+ } else {
+ dsb_simple(why, "2.0.0", "delivered to maildir");
+ deliver_status = sent(BOUNCE_FLAGS(state.request),
+ SENT_ATTR(state.msg_attr));
+ }
+ vstring_free(buf);
+ myfree(newdir);
+ myfree(tmpdir);
+ myfree(curdir);
+ myfree(tmpfile);
+ if (newfile)
+ myfree(newfile);
+ return (deliver_status);
+}
diff --git a/src/virtual/recipient.c b/src/virtual/recipient.c
new file mode 100644
index 0000000..fd151f2
--- /dev/null
+++ b/src/virtual/recipient.c
@@ -0,0 +1,94 @@
+/*++
+/* NAME
+/* recipient 3
+/* SUMMARY
+/* deliver to one local recipient
+/* SYNOPSIS
+/* #include "virtual.h"
+/*
+/* int deliver_recipient(state, usr_attr)
+/* LOCAL_STATE state;
+/* USER_ATTR *usr_attr;
+/* DESCRIPTION
+/* deliver_recipient() delivers a message to a local recipient.
+/*
+/* Arguments:
+/* .IP state
+/* The attributes that specify the message, sender, and more.
+/* .IP usr_attr
+/* Attributes describing user rights and mailbox location.
+/* DIAGNOSTICS
+/* deliver_recipient() returns non-zero when delivery should be
+/* tried again.
+/* SEE ALSO
+/* mailbox(3) delivery to UNIX-style mailbox
+/* maildir(3) delivery to qmail-style maildir
+/* 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>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <bounce.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+/* deliver_recipient - deliver one local recipient */
+
+int deliver_recipient(LOCAL_STATE state, USER_ATTR usr_attr)
+{
+ const char *myname = "deliver_recipient";
+ VSTRING *folded;
+ int rcpt_stat;
+
+ /*
+ * Make verbose logging easier to understand.
+ */
+ state.level++;
+ if (msg_verbose)
+ MSG_LOG_STATE(myname, state);
+
+ /*
+ * Set up the recipient-specific attributes. The recipient's lookup
+ * handle is the full address.
+ */
+ if (state.msg_attr.delivered == 0)
+ state.msg_attr.delivered = state.msg_attr.rcpt.address;
+ folded = vstring_alloc(100);
+ state.msg_attr.user = casefold(folded, state.msg_attr.rcpt.address);
+
+ /*
+ * Deliver
+ */
+ if (msg_verbose)
+ deliver_attr_dump(&state.msg_attr);
+
+ if (deliver_mailbox(state, usr_attr, &rcpt_stat) == 0)
+ rcpt_stat = deliver_unknown(state);
+
+ /*
+ * Cleanup.
+ */
+ vstring_free(folded);
+
+ return (rcpt_stat);
+}
diff --git a/src/virtual/unknown.c b/src/virtual/unknown.c
new file mode 100644
index 0000000..ad8d64a
--- /dev/null
+++ b/src/virtual/unknown.c
@@ -0,0 +1,65 @@
+/*++
+/* NAME
+/* unknown 3
+/* SUMMARY
+/* delivery of unknown recipients
+/* SYNOPSIS
+/* #include "virtual.h"
+/*
+/* int deliver_unknown(state)
+/* LOCAL_STATE state;
+/* DESCRIPTION
+/* deliver_unknown() delivers a message for unknown recipients.
+/* .PP
+/* Arguments:
+/* .IP state
+/* Message delivery attributes (sender, recipient etc.).
+/* .IP usr_attr
+/* Attributes describing user rights and mailbox location.
+/* DIAGNOSTICS
+/* The result status is non-zero when delivery should be tried again.
+/* 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>
+
+/* Utility library. */
+
+#include <msg.h>
+
+/* Global library. */
+
+#include <bounce.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+/* deliver_unknown - delivery for unknown recipients */
+
+int deliver_unknown(LOCAL_STATE state)
+{
+ const char *myname = "deliver_unknown";
+
+ /*
+ * Make verbose logging easier to understand.
+ */
+ state.level++;
+ if (msg_verbose)
+ MSG_LOG_STATE(myname, state);
+
+ dsb_simple(state.msg_attr.why, "5.1.1",
+ "unknown user: \"%s\"", state.msg_attr.user);
+ return (bounce_append(BOUNCE_FLAGS(state.request),
+ BOUNCE_ATTR(state.msg_attr)));
+}
diff --git a/src/virtual/virtual.c b/src/virtual/virtual.c
new file mode 100644
index 0000000..6fa9f1e
--- /dev/null
+++ b/src/virtual/virtual.c
@@ -0,0 +1,573 @@
+/*++
+/* NAME
+/* virtual 8
+/* SUMMARY
+/* Postfix virtual domain mail delivery agent
+/* SYNOPSIS
+/* \fBvirtual\fR [generic Postfix daemon options]
+/* DESCRIPTION
+/* The \fBvirtual\fR(8) delivery agent is designed for virtual mail
+/* hosting services. Originally based on the Postfix \fBlocal\fR(8)
+/* delivery
+/* agent, this agent looks up recipients with map lookups of their
+/* full recipient address, instead of using hard-coded unix password
+/* file lookups of the address local part only.
+/*
+/* This delivery agent only delivers mail. Other features such as
+/* mail forwarding, out-of-office notifications, etc., must be
+/* configured via virtual_alias maps or via similar lookup mechanisms.
+/* MAILBOX LOCATION
+/* .ad
+/* .fi
+/* The mailbox location is controlled by the \fBvirtual_mailbox_base\fR
+/* and \fBvirtual_mailbox_maps\fR configuration parameters (see below).
+/* The \fBvirtual_mailbox_maps\fR table is indexed by the recipient
+/* address as described under TABLE SEARCH ORDER below.
+/*
+/* The mailbox pathname is constructed as follows:
+/*
+/* .nf
+/* \fB$virtual_mailbox_base/$virtual_mailbox_maps(\fIrecipient\fB)\fR
+/* .fi
+/*
+/* where \fIrecipient\fR is the full recipient address.
+/* UNIX MAILBOX FORMAT
+/* .ad
+/* .fi
+/* When the mailbox location does not end in \fB/\fR, the message
+/* is delivered in UNIX mailbox format. This format stores multiple
+/* messages in one textfile.
+/*
+/* The \fBvirtual\fR(8) delivery agent prepends a "\fBFrom \fIsender
+/* time_stamp\fR" envelope header to each message, prepends a
+/* \fBDelivered-To:\fR message header with the envelope recipient
+/* address,
+/* prepends an \fBX-Original-To:\fR header with the recipient address as
+/* given to Postfix,
+/* prepends a \fBReturn-Path:\fR message header with the
+/* envelope sender address, prepends a \fB>\fR character to lines
+/* beginning with "\fBFrom \fR", and appends an empty line.
+/*
+/* The mailbox is locked for exclusive access while delivery is in
+/* progress. In case of problems, an attempt is made to truncate the
+/* mailbox to its original length.
+/* QMAIL MAILDIR FORMAT
+/* .ad
+/* .fi
+/* When the mailbox location ends in \fB/\fR, the message is delivered
+/* in qmail \fBmaildir\fR format. This format stores one message per file.
+/*
+/* The \fBvirtual\fR(8) delivery agent prepends a \fBDelivered-To:\fR
+/* message header with the final envelope recipient address,
+/* prepends an \fBX-Original-To:\fR header with the recipient address as
+/* given to Postfix, and prepends a
+/* \fBReturn-Path:\fR message header with the envelope sender address.
+/*
+/* By definition, \fBmaildir\fR format does not require application-level
+/* file locking during mail delivery or retrieval.
+/* MAILBOX OWNERSHIP
+/* .ad
+/* .fi
+/* Mailbox ownership is controlled by the \fBvirtual_uid_maps\fR
+/* and \fBvirtual_gid_maps\fR lookup tables, which are indexed
+/* with the full recipient address. Each table provides
+/* a string with the numerical user and group ID, respectively.
+/*
+/* The \fBvirtual_minimum_uid\fR parameter imposes a lower bound on
+/* numerical user ID values that may be specified in any
+/* \fBvirtual_uid_maps\fR.
+/* CASE FOLDING
+/* .ad
+/* .fi
+/* All delivery decisions are made using the full recipient
+/* address, folded to lower case. See also the next section
+/* for a few exceptions with optional address extensions.
+/* TABLE SEARCH ORDER
+/* .ad
+/* .fi
+/* Normally, a lookup table is specified as a text file that
+/* serves as input to the \fBpostmap\fR(1) command. The result, an
+/* indexed file in \fBdbm\fR or \fBdb\fR format, is used for fast
+/* searching by the mail system.
+/*
+/* The search order is as follows. The search stops
+/* upon the first successful lookup.
+/* .IP \(bu
+/* When the recipient has an optional address extension the
+/* \fIuser+extension@domain.tld\fR address is looked up first.
+/* .sp
+/* With Postfix versions before 2.1, the optional address extension
+/* is always ignored.
+/* .IP \(bu
+/* The \fIuser@domain.tld\fR address, without address extension,
+/* is looked up next.
+/* .IP \(bu
+/* Finally, the recipient \fI@domain\fR is looked up.
+/* .PP
+/* When the table is provided via other means such as NIS, LDAP
+/* or SQL, the same lookups are done as for ordinary indexed files.
+/*
+/* Alternatively, a table can be provided as a regular-expression
+/* map where patterns are given as regular expressions. In that case,
+/* only the full recipient address is given to the regular-expression
+/* map.
+/* SECURITY
+/* .ad
+/* .fi
+/* The \fBvirtual\fR(8) delivery agent is not security sensitive, provided
+/* that the lookup tables with recipient user/group ID information are
+/* adequately protected. This program is not designed to run chrooted.
+/*
+/* The \fBvirtual\fR(8) delivery agent disallows regular expression
+/* substitution of $1 etc. in regular expression lookup tables,
+/* because that would open a security hole.
+/*
+/* The \fBvirtual\fR(8) delivery agent will silently ignore requests
+/* to use the \fBproxymap\fR(8) server. Instead it will open the
+/* table directly. Before Postfix version 2.2, the virtual
+/* delivery agent will terminate with a fatal error.
+/* STANDARDS
+/* RFC 822 (ARPA Internet Text Messages)
+/* DIAGNOSTICS
+/* Mail bounces when the recipient has no mailbox or when the
+/* recipient is over disk quota. In all other problem cases, mail for
+/* an existing recipient is deferred and a warning is logged.
+/*
+/* Problems and transactions are logged to \fBsyslogd\fR(8)
+/* or \fBpostlogd\fR(8).
+/* Corrupted message files are marked so that the queue
+/* manager can move them to the \fBcorrupt\fR queue afterwards.
+/*
+/* Depending on the setting of the \fBnotify_classes\fR parameter,
+/* the postmaster is notified of bounces and of other trouble.
+/* BUGS
+/* This delivery agent supports address extensions in email
+/* addresses and in lookup table keys, but does not propagate
+/* address extension information to the result of table lookup.
+/*
+/* Postfix should have lookup tables that can return multiple result
+/* attributes. In order to avoid the inconvenience of maintaining
+/* three tables, use an LDAP or MYSQL database.
+/* CONFIGURATION PARAMETERS
+/* .ad
+/* .fi
+/* Changes to \fBmain.cf\fR are picked up automatically, as
+/* \fBvirtual\fR(8)
+/* processes run for only a limited amount of time. Use the command
+/* "\fBpostfix reload\fR" to speed up a change.
+/*
+/* The text below provides only a parameter summary. See
+/* \fBpostconf\fR(5) for more details including examples.
+/* MAILBOX DELIVERY CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_base (empty)\fR"
+/* A prefix that the \fBvirtual\fR(8) delivery agent prepends to all pathname
+/* results from $virtual_mailbox_maps table lookups.
+/* .IP "\fBvirtual_mailbox_maps (empty)\fR"
+/* Optional lookup tables with all valid addresses in the domains that
+/* match $virtual_mailbox_domains.
+/* .IP "\fBvirtual_minimum_uid (100)\fR"
+/* The minimum user ID value that the \fBvirtual\fR(8) delivery agent accepts
+/* as a result from $virtual_uid_maps table lookup.
+/* .IP "\fBvirtual_uid_maps (empty)\fR"
+/* Lookup tables with the per-recipient user ID that the \fBvirtual\fR(8)
+/* delivery agent uses while writing to the recipient's mailbox.
+/* .IP "\fBvirtual_gid_maps (empty)\fR"
+/* Lookup tables with the per-recipient group ID for \fBvirtual\fR(8) mailbox
+/* delivery.
+/* .PP
+/* Available in Postfix version 2.0 and later:
+/* .IP "\fBvirtual_mailbox_domains ($virtual_mailbox_maps)\fR"
+/* Postfix is the final destination for the specified list of domains;
+/* mail is delivered via the $virtual_transport mail delivery transport.
+/* .IP "\fBvirtual_transport (virtual)\fR"
+/* The default mail delivery transport and next-hop destination for
+/* final delivery to domains listed with $virtual_mailbox_domains.
+/* .PP
+/* Available in Postfix version 2.5.3 and later:
+/* .IP "\fBstrict_mailbox_ownership (yes)\fR"
+/* Defer delivery when a mailbox file is not owned by its recipient.
+/* LOCKING CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_lock (see 'postconf -d' output)\fR"
+/* How to lock a UNIX-style \fBvirtual\fR(8) mailbox before attempting
+/* delivery.
+/* .IP "\fBdeliver_lock_attempts (20)\fR"
+/* The maximal number of attempts to acquire an exclusive lock on a
+/* mailbox file or \fBbounce\fR(8) logfile.
+/* .IP "\fBdeliver_lock_delay (1s)\fR"
+/* The time between attempts to acquire an exclusive lock on a mailbox
+/* file or \fBbounce\fR(8) logfile.
+/* .IP "\fBstale_lock_time (500s)\fR"
+/* The time after which a stale exclusive mailbox lockfile is removed.
+/* RESOURCE AND RATE CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBvirtual_mailbox_limit (51200000)\fR"
+/* The maximal size in bytes of an individual \fBvirtual\fR(8) mailbox or
+/* maildir file, or zero (no limit).
+/* .PP
+/* Implemented in the qmgr(8) daemon:
+/* .IP "\fBvirtual_destination_concurrency_limit ($default_destination_concurrency_limit)\fR"
+/* The maximal number of parallel deliveries to the same destination
+/* via the virtual message delivery transport.
+/* .IP "\fBvirtual_destination_recipient_limit ($default_destination_recipient_limit)\fR"
+/* The maximal number of recipients per message for the virtual
+/* message delivery transport.
+/* MISCELLANEOUS CONTROLS
+/* .ad
+/* .fi
+/* .IP "\fBconfig_directory (see 'postconf -d' output)\fR"
+/* The default location of the Postfix main.cf and master.cf
+/* configuration files.
+/* .IP "\fBdaemon_timeout (18000s)\fR"
+/* How much time a Postfix daemon process may take to handle a
+/* request before it is terminated by a built-in watchdog timer.
+/* .IP "\fBdelay_logging_resolution_limit (2)\fR"
+/* The maximal number of digits after the decimal point when logging
+/* sub-second delay values.
+/* .IP "\fBipc_timeout (3600s)\fR"
+/* The time limit for sending or receiving information over an internal
+/* communication channel.
+/* .IP "\fBmax_idle (100s)\fR"
+/* The maximum amount of time that an idle Postfix daemon process waits
+/* for an incoming connection before terminating voluntarily.
+/* .IP "\fBmax_use (100)\fR"
+/* The maximal number of incoming connections that a Postfix daemon
+/* process will service before terminating voluntarily.
+/* .IP "\fBprocess_id (read-only)\fR"
+/* The process ID of a Postfix command or daemon process.
+/* .IP "\fBprocess_name (read-only)\fR"
+/* The process name of a Postfix command or daemon process.
+/* .IP "\fBqueue_directory (see 'postconf -d' output)\fR"
+/* The location of the Postfix top-level queue directory.
+/* .IP "\fBsyslog_facility (mail)\fR"
+/* The syslog facility of Postfix logging.
+/* .IP "\fBsyslog_name (see 'postconf -d' output)\fR"
+/* A prefix that is prepended to the process name in syslog
+/* records, so that, for example, "smtpd" becomes "prefix/smtpd".
+/* .PP
+/* Available in Postfix version 3.0 and later:
+/* .IP "\fBvirtual_delivery_status_filter ($default_delivery_status_filter)\fR"
+/* Optional filter for the \fBvirtual\fR(8) delivery agent to change the
+/* delivery status code or explanatory text of successful or unsuccessful
+/* deliveries.
+/* .PP
+/* Available in Postfix version 3.3 and later:
+/* .IP "\fBenable_original_recipient (yes)\fR"
+/* Enable support for the original recipient address after an
+/* address is rewritten to a different address (for example with
+/* aliasing or with canonical mapping).
+/* .IP "\fBservice_name (read-only)\fR"
+/* The master.cf service name of a Postfix daemon process.
+/* .PP
+/* Available in Postfix 3.5 and later:
+/* .IP "\fBinfo_log_address_format (external)\fR"
+/* The email address form that will be used in non-debug logging
+/* (info, warning, etc.).
+/* SEE ALSO
+/* qmgr(8), queue manager
+/* bounce(8), delivery status reports
+/* postconf(5), configuration parameters
+/* postlogd(8), Postfix logging
+/* syslogd(8), system logging
+/* README_FILES
+/* Use "\fBpostconf readme_directory\fR" or
+/* "\fBpostconf html_directory\fR" to locate this information.
+/* VIRTUAL_README, domain hosting howto
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* HISTORY
+/* .ad
+/* .fi
+/* This delivery agent was originally based on the Postfix local delivery
+/* agent. Modifications mainly consisted of removing code that either
+/* was not applicable or that was not safe in this context: aliases,
+/* ~user/.forward files, delivery to "|command" or to /file/name.
+/*
+/* The \fBDelivered-To:\fR message header appears in the \fBqmail\fR
+/* system by Daniel Bernstein.
+/*
+/* The \fBmaildir\fR structure appears in the \fBqmail\fR system
+/* by Daniel Bernstein.
+/* 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
+/*
+/* Andrew McNamara
+/* andrewm@connect.com.au
+/* connect.com.au Pty. Ltd.
+/* Level 3, 213 Miller St
+/* North Sydney 2060, NSW, Australia
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <stdlib.h>
+#ifdef USE_PATHS_H
+#include <paths.h> /* XXX mail_spool_dir dependency */
+#endif
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <iostuff.h>
+#include <set_eugid.h>
+#include <dict.h>
+
+/* Global library. */
+
+#include <mail_queue.h>
+#include <recipient_list.h>
+#include <deliver_request.h>
+#include <deliver_completed.h>
+#include <mail_params.h>
+#include <mail_version.h>
+#include <mail_conf.h>
+#include <mail_params.h>
+#include <mail_addr_find.h>
+#include <flush_clnt.h>
+
+/* Single server skeleton. */
+
+#include <mail_server.h>
+
+/* Application-specific. */
+
+#include "virtual.h"
+
+ /*
+ * Tunable parameters.
+ */
+char *var_virt_mailbox_maps;
+char *var_virt_uid_maps;
+char *var_virt_gid_maps;
+int var_virt_minimum_uid;
+char *var_virt_mailbox_base;
+char *var_virt_mailbox_lock;
+long var_virt_mailbox_limit;
+char *var_mail_spool_dir; /* XXX dependency fix */
+bool var_strict_mbox_owner;
+char *var_virt_dsn_filter;
+
+ /*
+ * Mappings.
+ */
+MAPS *virtual_mailbox_maps;
+MAPS *virtual_uid_maps;
+MAPS *virtual_gid_maps;
+
+ /*
+ * Bit masks.
+ */
+int virtual_mbox_lock_mask;
+
+/* local_deliver - deliver message with extreme prejudice */
+
+static int local_deliver(DELIVER_REQUEST *rqst, char *service)
+{
+ const char *myname = "local_deliver";
+ RECIPIENT *rcpt_end = rqst->rcpt_list.info + rqst->rcpt_list.len;
+ RECIPIENT *rcpt;
+ int rcpt_stat;
+ int msg_stat;
+ LOCAL_STATE state;
+ USER_ATTR usr_attr;
+
+ if (msg_verbose)
+ msg_info("local_deliver: %s from %s", rqst->queue_id, rqst->sender);
+
+ /*
+ * Initialize the delivery attributes that are not recipient specific.
+ */
+ state.level = 0;
+ deliver_attr_init(&state.msg_attr);
+ state.msg_attr.queue_name = rqst->queue_name;
+ state.msg_attr.queue_id = rqst->queue_id;
+ state.msg_attr.fp = rqst->fp;
+ state.msg_attr.offset = rqst->data_offset;
+ state.msg_attr.sender = rqst->sender;
+ state.msg_attr.dsn_envid = rqst->dsn_envid;
+ state.msg_attr.dsn_ret = rqst->dsn_ret;
+ state.msg_attr.relay = service;
+ state.msg_attr.msg_stats = rqst->msg_stats;
+ RESET_USER_ATTR(usr_attr, state.level);
+ state.request = rqst;
+
+ /*
+ * Iterate over each recipient named in the delivery request. When the
+ * mail delivery status for a given recipient is definite (i.e. bounced
+ * or delivered), update the message queue file and cross off the
+ * recipient. Update the per-message delivery status.
+ */
+ for (msg_stat = 0, rcpt = rqst->rcpt_list.info; rcpt < rcpt_end; rcpt++) {
+ state.msg_attr.rcpt = *rcpt;
+ rcpt_stat = deliver_recipient(state, usr_attr);
+ if (rcpt_stat == 0 && (rqst->flags & DEL_REQ_FLAG_SUCCESS))
+ deliver_completed(state.msg_attr.fp, rcpt->offset);
+ msg_stat |= rcpt_stat;
+ }
+
+ deliver_attr_free(&state.msg_attr);
+ return (msg_stat);
+}
+
+/* local_service - perform service for client */
+
+static void local_service(VSTREAM *stream, char *service, char **argv)
+{
+ DELIVER_REQUEST *request;
+ int status;
+
+ /*
+ * Sanity check. This service takes no command-line arguments.
+ */
+ if (argv[0])
+ msg_fatal("unexpected command-line argument: %s", argv[0]);
+
+ /*
+ * This routine runs whenever a client connects to the UNIX-domain socket
+ * that is dedicated to local mail delivery service. What we see below is
+ * a little protocol to (1) tell the client that we are ready, (2) read a
+ * delivery request from the client, and (3) report the completion status
+ * of that request.
+ */
+ if ((request = deliver_request_read(stream)) != 0) {
+ status = local_deliver(request, service);
+ deliver_request_done(stream, request, status);
+ }
+}
+
+/* pre_accept - see if tables have changed */
+
+static void pre_accept(char *unused_name, char **unused_argv)
+{
+ const char *table;
+
+ if ((table = dict_changed_name()) != 0) {
+ msg_info("table %s has changed -- restarting", table);
+ exit(0);
+ }
+}
+
+/* post_init - post-jail initialization */
+
+static void post_init(char *unused_name, char **unused_argv)
+{
+
+ /*
+ * Drop privileges most of the time.
+ */
+ set_eugid(var_owner_uid, var_owner_gid);
+
+ /*
+ * No case folding needed: the recipient address is case folded.
+ */
+ virtual_mailbox_maps =
+ maps_create(VAR_VIRT_MAILBOX_MAPS, var_virt_mailbox_maps,
+ DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+ | DICT_FLAG_UTF8_REQUEST);
+
+ virtual_uid_maps =
+ maps_create(VAR_VIRT_UID_MAPS, var_virt_uid_maps,
+ DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+ | DICT_FLAG_UTF8_REQUEST);
+
+ virtual_gid_maps =
+ maps_create(VAR_VIRT_GID_MAPS, var_virt_gid_maps,
+ DICT_FLAG_LOCK | DICT_FLAG_PARANOID
+ | DICT_FLAG_UTF8_REQUEST);
+
+ virtual_mbox_lock_mask = mbox_lock_mask(var_virt_mailbox_lock);
+}
+
+/* pre_init - pre-jail initialization */
+
+static void pre_init(char *unused_name, char **unused_argv)
+{
+
+ /*
+ * Reset the file size limit from the message size limit to the mailbox
+ * size limit.
+ *
+ * We can't have mailbox size limit smaller than the message size limit,
+ * because that prohibits the delivery agent from updating the queue
+ * file.
+ */
+ if (ENFORCING_SIZE_LIMIT(var_virt_mailbox_limit)) {
+ if (!ENFORCING_SIZE_LIMIT(var_message_limit))
+ msg_fatal("configuration error: %s is limited but %s is "
+ "unlimited", VAR_VIRT_MAILBOX_LIMIT, VAR_MESSAGE_LIMIT);
+ if (var_virt_mailbox_limit < var_message_limit)
+ msg_fatal("configuration error: %s is smaller than %s",
+ VAR_VIRT_MAILBOX_LIMIT, VAR_MESSAGE_LIMIT);
+ set_file_limit(var_virt_mailbox_limit);
+ }
+
+ /*
+ * flush client.
+ */
+ flush_init();
+}
+
+MAIL_VERSION_STAMP_DECLARE;
+
+/* main - pass control to the single-threaded skeleton */
+
+int main(int argc, char **argv)
+{
+ static const CONFIG_INT_TABLE int_table[] = {
+ VAR_VIRT_MINUID, DEF_VIRT_MINUID, &var_virt_minimum_uid, 1, 0,
+ 0,
+ };
+ static const CONFIG_LONG_TABLE long_table[] = {
+ VAR_VIRT_MAILBOX_LIMIT, DEF_VIRT_MAILBOX_LIMIT, &var_virt_mailbox_limit, 0, 0,
+ 0,
+ };
+ static const CONFIG_STR_TABLE str_table[] = {
+ VAR_MAIL_SPOOL_DIR, DEF_MAIL_SPOOL_DIR, &var_mail_spool_dir, 0, 0,
+ VAR_VIRT_MAILBOX_MAPS, DEF_VIRT_MAILBOX_MAPS, &var_virt_mailbox_maps, 0, 0,
+ VAR_VIRT_UID_MAPS, DEF_VIRT_UID_MAPS, &var_virt_uid_maps, 0, 0,
+ VAR_VIRT_GID_MAPS, DEF_VIRT_GID_MAPS, &var_virt_gid_maps, 0, 0,
+ VAR_VIRT_MAILBOX_BASE, DEF_VIRT_MAILBOX_BASE, &var_virt_mailbox_base, 1, 0,
+ VAR_VIRT_MAILBOX_LOCK, DEF_VIRT_MAILBOX_LOCK, &var_virt_mailbox_lock, 1, 0,
+ VAR_VIRT_DSN_FILTER, DEF_VIRT_DSN_FILTER, &var_virt_dsn_filter, 0, 0,
+ 0,
+ };
+ static const CONFIG_BOOL_TABLE bool_table[] = {
+ VAR_STRICT_MBOX_OWNER, DEF_STRICT_MBOX_OWNER, &var_strict_mbox_owner,
+ 0,
+ };
+
+ /*
+ * Fingerprint executables and core dumps.
+ */
+ MAIL_VERSION_STAMP_ALLOCATE;
+
+ single_server_main(argc, argv, local_service,
+ CA_MAIL_SERVER_INT_TABLE(int_table),
+ CA_MAIL_SERVER_LONG_TABLE(long_table),
+ CA_MAIL_SERVER_STR_TABLE(str_table),
+ CA_MAIL_SERVER_BOOL_TABLE(bool_table),
+ CA_MAIL_SERVER_PRE_INIT(pre_init),
+ CA_MAIL_SERVER_POST_INIT(post_init),
+ CA_MAIL_SERVER_PRE_ACCEPT(pre_accept),
+ CA_MAIL_SERVER_PRIVILEGED,
+ CA_MAIL_SERVER_BOUNCE_INIT(VAR_VIRT_DSN_FILTER,
+ &var_virt_dsn_filter),
+ 0);
+}
diff --git a/src/virtual/virtual.h b/src/virtual/virtual.h
new file mode 100644
index 0000000..75dd6cd
--- /dev/null
+++ b/src/virtual/virtual.h
@@ -0,0 +1,150 @@
+/*++
+/* NAME
+/* virtual 3h
+/* SUMMARY
+/* virtual mail delivery
+/* SYNOPSIS
+/* #include "virtual.h"
+/* DESCRIPTION
+/* .nf
+
+ /*
+ * System library.
+ */
+#include <unistd.h>
+
+ /*
+ * Utility library.
+ */
+#include <vstream.h>
+#include <vstring.h>
+
+ /*
+ * Global library.
+ */
+#include <deliver_request.h>
+#include <maps.h>
+#include <mbox_conf.h>
+#include <dsn_buf.h>
+#include <dsn.h>
+
+ /*
+ * Mappings.
+ */
+extern MAPS *virtual_mailbox_maps;
+extern MAPS *virtual_uid_maps;
+extern MAPS *virtual_gid_maps;
+
+ /*
+ * User attributes: these control the privileges for delivery to external
+ * commands, external files, or mailboxes, and the initial environment of
+ * external commands.
+ */
+typedef struct USER_ATTR {
+ uid_t uid; /* file/command access */
+ gid_t gid; /* file/command access */
+ char *mailbox; /* mailbox file or directory */
+} USER_ATTR;
+
+ /*
+ * Critical macros. Not for obscurity, but to ensure consistency.
+ */
+#define RESET_USER_ATTR(usr_attr, level) { \
+ usr_attr.uid = 0; usr_attr.gid = 0; usr_attr.mailbox = 0; \
+ if (msg_verbose) \
+ msg_info("%s[%d]: reset user_attr", myname, level); \
+ }
+
+ /*
+ * The delivery attributes are inherited from files, from aliases, and from
+ * whatnot. Some of the information is changed on the fly. DELIVER_ATTR
+ * structures are therefore passed by value, so there is no need to undo
+ * changes.
+ */
+typedef struct DELIVER_ATTR {
+ int level; /* recursion level */
+ VSTREAM *fp; /* open queue file */
+ char *queue_name; /* mail queue id */
+ char *queue_id; /* mail queue id */
+ long offset; /* data offset */
+ const char *sender; /* taken from envelope */
+ char *dsn_envid; /* DSN envelope ID */
+ int dsn_ret; /* DSN headers/full */
+ RECIPIENT rcpt; /* from delivery request */
+ char *user; /* recipient lookup handle */
+ const char *delivered; /* for loop detection */
+ char *relay; /* relay host */
+ MSG_STATS msg_stats; /* time profile */
+ DSN_BUF *why; /* delivery status */
+} DELIVER_ATTR;
+
+extern void deliver_attr_init(DELIVER_ATTR *);
+extern void deliver_attr_dump(DELIVER_ATTR *);
+extern void deliver_attr_free(DELIVER_ATTR *);
+
+#define FEATURE_NODELIVERED (1<<0) /* no delivered-to */
+
+ /*
+ * Rather than schlepping around dozens of arguments, here is one that has
+ * all. Well, almost. The user attributes are just a bit too sensitive, so
+ * they are passed around separately.
+ */
+typedef struct LOCAL_STATE {
+ int level; /* nesting level, for logging */
+ DELIVER_ATTR msg_attr; /* message/recipient attributes */
+ DELIVER_REQUEST *request; /* as from queue manager */
+} LOCAL_STATE;
+
+ /*
+ * Bundle up some often-user attributes.
+ */
+#define BOUNCE_FLAGS(request) DEL_REQ_TRACE_FLAGS((request)->flags)
+
+#define BOUNCE_ATTR(attr) \
+ attr.queue_id, &attr.msg_stats, &attr.rcpt, attr.relay, \
+ DSN_FROM_DSN_BUF(attr.why)
+#define SENT_ATTR(attr) \
+ attr.queue_id, &attr.msg_stats, &attr.rcpt, attr.relay, \
+ DSN_FROM_DSN_BUF(attr.why)
+#define COPY_ATTR(attr) \
+ attr.sender, attr.rcpt.orig_addr, attr.delivered, attr.fp
+
+#define MSG_LOG_STATE(m, p) \
+ msg_info("%s[%d]: recip %s deliver %s", m, \
+ p.level, \
+ p.msg_attr.rcpt.address ? p.msg_attr.rcpt.address : "", \
+ p.msg_attr.delivered ? p.msg_attr.delivered : "")
+
+ /*
+ * "inner" nodes of the delivery graph.
+ */
+extern int deliver_recipient(LOCAL_STATE, USER_ATTR);
+
+ /*
+ * "leaf" nodes of the delivery graph.
+ */
+extern int deliver_mailbox(LOCAL_STATE, USER_ATTR, int *);
+extern int deliver_file(LOCAL_STATE, USER_ATTR, char *);
+extern int deliver_maildir(LOCAL_STATE, USER_ATTR);
+extern int deliver_unknown(LOCAL_STATE);
+
+ /*
+ * Mailbox lock protocol.
+ */
+extern int virtual_mbox_lock_mask;
+
+ /*
+ * Silly little macros.
+ */
+#define STR(s) vstring_str(s)
+
+/* 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
+/*--*/