Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 222 insertions, 0 deletions

diff --git a/src/local/token.c b/src/local/token.c
new file mode 100644
index 0000000..2eb0c28
--- /dev/null
+++ b/src/local/token.c
@@ -0,0 +1,222 @@
+/*++
+/* NAME
+/*	token 3
+/* SUMMARY
+/*	tokenize alias/include/.forward entries and deliver
+/* SYNOPSIS
+/*	#include "local.h"
+/*
+/*	int	deliver_token(state, usr_attr, addr)
+/*	LOCAL_STATE state;
+/*	USER_ATTR usr_attr;
+/*	TOK822	*addr;
+/*
+/*	int	deliver_token_string(state, usr_attr, string, addr_count)
+/*	LOCAL_STATE state;
+/*	USER_ATTR usr_attr;
+/*	char	*string;
+/*	int	*addr_count;
+/*
+/*	int	deliver_token_stream(state, usr_attr, fp, addr_count)
+/*	LOCAL_STATE state;
+/*	USER_ATTR usr_attr;
+/*	VSTREAM	*fp;
+/*	int	*addr_count;
+/* DESCRIPTION
+/*	This module delivers to addresses listed in an alias database
+/*	entry, in an include file, or in a .forward file.
+/*
+/*	deliver_token() delivers to the address in the given token:
+/*	an absolute /path/name, a ~/path/name relative to the recipient's
+/*	home directory, an :include:/path/name request, an external
+/*	"|command", or a mail address.
+/*
+/*	deliver_token_string() delivers to all addresses listed in
+/*	the specified string.
+/*
+/*	deliver_token_stream() delivers to all addresses listed in
+/*	the specified stream. Input records > \fIline_length_limit\fR
+/*	are broken up into multiple records, to prevent the mail
+/*	system from using unreasonable amounts of memory.
+/*
+/*	Arguments:
+/* .IP state
+/*	The attributes that specify the message, recipient and more.
+/*	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 addr
+/*	A parsed address from an include file, alias file or .forward file.
+/* .IP string
+/*	A null-terminated string.
+/* .IP fp
+/*	A readable stream.
+/* .IP addr_count
+/*	Null pointer, or the address of a counter that is incremented
+/*	by the number of destinations found by the tokenizer.
+/* DIAGNOSTICS
+/*	Fatal errors: out of memory. The result is non-zero when the
+/*	operation should be tried again. Warnings: malformed address.
+/* SEE ALSO
+/*	list_token(3) tokenize list
+/* 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 <unistd.h>
+#include <string.h>
+
+#ifdef STRCASECMP_IN_STRINGS_H
+#include <strings.h>
+#endif
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <htable.h>
+#include <readlline.h>
+#include <mymalloc.h>
+#include <vstring_vstream.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <tok822.h>
+#include <mail_params.h>
+#include <bounce.h>
+#include <defer.h>
+
+/* Application-specific. */
+
+#include "local.h"
+
+/* deliver_token_home - expand ~token */
+
+static int deliver_token_home(LOCAL_STATE state, USER_ATTR usr_attr, char *addr)
+{
+    char   *full_path;
+    int     status;
+
+    if (addr[1] != '/') {			/* disallow ~user */
+	msg_warn("bad home directory syntax for: %s", addr);
+	dsb_simple(state.msg_attr.why, "5.3.5",
+		   "mail system configuration error");
+	status = bounce_append(BOUNCE_FLAGS(state.request),
+			       BOUNCE_ATTR(state.msg_attr));
+    } else if (usr_attr.home == 0) {		/* require user context */
+	msg_warn("unknown home directory for: %s", addr);
+	dsb_simple(state.msg_attr.why, "5.3.5",
+		   "mail system configuration error");
+	status = bounce_append(BOUNCE_FLAGS(state.request),
+			       BOUNCE_ATTR(state.msg_attr));
+    } else if (usr_attr.home[0] == '/' && usr_attr.home[1] == 0) {
+	status = deliver_file(state, usr_attr, addr + 1);
+    } else {					/* expand ~ to home */
+	full_path = concatenate(usr_attr.home, addr + 1, (char *) 0);
+	status = deliver_file(state, usr_attr, full_path);
+	myfree(full_path);
+    }
+    return (status);
+}
+
+/* deliver_token - deliver to expansion of include file or alias */
+
+int     deliver_token(LOCAL_STATE state, USER_ATTR usr_attr, TOK822 *addr)
+{
+    VSTRING *addr_buf = vstring_alloc(100);
+    static char include[] = ":include:";
+    int     status;
+    char   *path;
+
+    tok822_internalize(addr_buf, addr->head, TOK822_STR_DEFL);
+    if (msg_verbose)
+	msg_info("deliver_token: %s", STR(addr_buf));
+
+    if (*STR(addr_buf) == '/') {
+	status = deliver_file(state, usr_attr, STR(addr_buf));
+    } else if (*STR(addr_buf) == '~') {
+	status = deliver_token_home(state, usr_attr, STR(addr_buf));
+    } else if (*STR(addr_buf) == '|') {
+	if ((local_cmd_deliver_mask & state.msg_attr.exp_type) == 0) {
+	    dsb_simple(state.msg_attr.why, "5.7.1",
+		       "mail to command is restricted");
+	    status = bounce_append(BOUNCE_FLAGS(state.request),
+				   BOUNCE_ATTR(state.msg_attr));
+	} else
+	    status = deliver_command(state, usr_attr, STR(addr_buf) + 1);
+    } else if (strncasecmp(STR(addr_buf), include, sizeof(include) - 1) == 0) {
+	path = STR(addr_buf) + sizeof(include) - 1;
+	status = deliver_include(state, usr_attr, path);
+    } else {
+	status = deliver_resolve_tree(state, usr_attr, addr);
+    }
+    vstring_free(addr_buf);
+
+    return (status);
+}
+
+/* deliver_token_string - tokenize string and deliver */
+
+int     deliver_token_string(LOCAL_STATE state, USER_ATTR usr_attr,
+			             char *string, int *addr_count)
+{
+    TOK822 *tree;
+    TOK822 *addr;
+    int     status = 0;
+
+    if (msg_verbose)
+	msg_info("deliver_token_string: %s", string);
+
+    tree = tok822_parse(string);
+    for (addr = tree; addr != 0; addr = addr->next) {
+	if (addr->type == TOK822_ADDR) {
+	    if (addr_count)
+		(*addr_count)++;
+	    status |= deliver_token(state, usr_attr, addr);
+	}
+    }
+    tok822_free_tree(tree);
+    return (status);
+}
+
+/* deliver_token_stream - tokenize stream and deliver */
+
+int     deliver_token_stream(LOCAL_STATE state, USER_ATTR usr_attr,
+			             VSTREAM *fp, int *addr_count)
+{
+    VSTRING *buf = vstring_alloc(100);
+    int     status = 0;
+
+    if (msg_verbose)
+	msg_info("deliver_token_stream: %s", VSTREAM_PATH(fp));
+
+    while (vstring_fgets_bound(buf, fp, var_line_limit)) {
+	if (*STR(buf) != '#') {
+	    status = deliver_token_string(state, usr_attr, STR(buf), addr_count);
+	    if (status != 0)
+		break;
+	}
+    }
+    if (vstream_ferror(fp)) {
+	dsb_simple(state.msg_attr.why, "4.3.0",
+		   "error reading forwarding file: %m");
+	status = defer_append(BOUNCE_FLAGS(state.request),
+			      BOUNCE_ATTR(state.msg_attr));
+    }
+    vstring_free(buf);
+    return (status);
+}