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/*++
/* 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);
}
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