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#ifndef SMTP_SERVER_H
#define SMTP_SERVER_H
#include "smtp-common.h"
#include "smtp-command.h"
#include "smtp-params.h"
struct smtp_address;
struct smtp_reply;
struct smtp_command;
struct smtp_server_helo_data;
struct smtp_server_esmtp_param;
struct smtp_server_cmd_ehlo;
struct smtp_server_cmd_mail;
struct smtp_server_cmd_ctx;
struct smtp_server_command;
struct smtp_server_reply;
struct smtp_server_recipient;
struct smtp_server_transaction;
struct smtp_server;
/*
* Types
*/
enum smtp_server_state {
SMTP_SERVER_STATE_GREETING = 0,
SMTP_SERVER_STATE_XCLIENT,
SMTP_SERVER_STATE_HELO,
SMTP_SERVER_STATE_STARTTLS,
SMTP_SERVER_STATE_AUTH,
SMTP_SERVER_STATE_READY,
SMTP_SERVER_STATE_MAIL_FROM,
SMTP_SERVER_STATE_RCPT_TO,
SMTP_SERVER_STATE_DATA,
};
extern const char *const smtp_server_state_names[];
struct smtp_server_helo_data {
const char *domain;
bool domain_valid:1; /* Valid domain/literal specified */
bool old_smtp:1; /* Client sent HELO rather than EHLO */
};
/*
* Recipient
*/
enum smtp_server_recipient_hook_type {
/* approved: the server is about to approve this recipient by sending
a success reply to the RCPT command. */
SMTP_SERVER_RECIPIENT_HOOK_APPROVED,
/* data_replied: the DATA command is replied for this recipient */
SMTP_SERVER_RECIPIENT_HOOK_DATA_REPLIED,
/* destroy: recipient is about to be destroyed. */
SMTP_SERVER_RECIPIENT_HOOK_DESTROY
};
typedef void smtp_server_rcpt_func_t(struct smtp_server_recipient *rcpt,
void *context);
struct smtp_server_recipient {
pool_t pool;
struct smtp_server_connection *conn;
struct smtp_server_transaction *trans;
struct event *event;
struct smtp_address *path;
struct smtp_params_rcpt params;
/* The associated RCPT or DATA command (whichever applies). This is NULL
when no command is active. */
struct smtp_server_cmd_ctx *cmd;
/* The index in the list of approved recipients */
unsigned int index;
void *context;
bool replied:1;
bool finished:1;
};
ARRAY_DEFINE_TYPE(smtp_server_recipient, struct smtp_server_recipient *);
/* Returns the original recipient path if available. Otherwise, it returns the
final path. */
const struct smtp_address *
smtp_server_recipient_get_original(struct smtp_server_recipient *rcpt);
struct smtp_server_reply *
smtp_server_recipient_get_reply(struct smtp_server_recipient *rcpt);
bool smtp_server_recipient_is_replied(struct smtp_server_recipient *rcpt);
void smtp_server_recipient_replyv(struct smtp_server_recipient *rcpt,
unsigned int status, const char *enh_code,
const char *fmt, va_list args)
ATTR_FORMAT(4, 0);
void smtp_server_recipient_reply(struct smtp_server_recipient *rcpt,
unsigned int status, const char *enh_code,
const char *fmt, ...) ATTR_FORMAT(4, 5);
void smtp_server_recipient_reply_forward(struct smtp_server_recipient *rcpt,
const struct smtp_reply *from);
/* Hooks */
void smtp_server_recipient_add_hook(struct smtp_server_recipient *rcpt,
enum smtp_server_recipient_hook_type type,
smtp_server_rcpt_func_t func,
void *context);
#define smtp_server_recipient_add_hook(_rcpt, _type, _func, _context) \
smtp_server_recipient_add_hook((_rcpt), (_type) - \
CALLBACK_TYPECHECK(_func, void (*)( \
struct smtp_server_recipient *, typeof(_context))), \
(smtp_server_rcpt_func_t *)(_func), (_context))
void smtp_server_recipient_remove_hook(
struct smtp_server_recipient *rcpt,
enum smtp_server_recipient_hook_type type,
smtp_server_rcpt_func_t *func);
#define smtp_server_recipient_remove_hook(_rcpt, _type, _func) \
smtp_server_recipient_remove_hook((_rcpt), (_type), \
(smtp_server_rcpt_func_t *)(_func));
/*
* Transaction
*/
enum smtp_server_trace_rcpt_to_address {
/* Don't add recipient address to trace header. */
SMTP_SERVER_TRACE_RCPT_TO_ADDRESS_NONE,
/* Add final recipient address to trace header. */
SMTP_SERVER_TRACE_RCPT_TO_ADDRESS_FINAL,
/* Add original recipient address to trace header. */
SMTP_SERVER_TRACE_RCPT_TO_ADDRESS_ORIGINAL,
};
enum smtp_server_transaction_flags {
SMTP_SERVER_TRANSACTION_FLAG_REPLY_PER_RCPT = BIT(0),
};
struct smtp_server_transaction {
pool_t pool;
struct smtp_server_connection *conn;
struct event *event;
const char *id;
struct timeval timestamp;
enum smtp_server_transaction_flags flags;
struct smtp_address *mail_from;
struct smtp_params_mail params;
ARRAY_TYPE(smtp_server_recipient) rcpt_to;
/* The associated DATA command. This is NULL until the last DATA/BDAT
command is issued.
*/
struct smtp_server_cmd_ctx *cmd;
void *context;
bool finished:1;
};
struct smtp_server_recipient *
smtp_server_transaction_find_rcpt_duplicate(
struct smtp_server_transaction *trans,
struct smtp_server_recipient *rcpt);
void smtp_server_transaction_fail_data(struct smtp_server_transaction *trans,
struct smtp_server_cmd_ctx *data_cmd,
unsigned int status,
const char *enh_code,
const char *fmt, va_list args)
ATTR_FORMAT(5, 0);
void smtp_server_transaction_write_trace_record(
string_t *str, struct smtp_server_transaction *trans,
enum smtp_server_trace_rcpt_to_address rcpt_to_address);
/*
* Callbacks
*/
struct smtp_server_cmd_helo {
struct smtp_server_helo_data helo;
bool first:1; /* This is the first */
bool changed:1; /* This EHLO/HELO/LHLO is the first or different
from a previous one */
};
struct smtp_server_cmd_mail {
struct smtp_address *path;
struct smtp_params_mail params;
struct timeval timestamp;
enum smtp_server_transaction_flags flags;
};
struct smtp_server_cmd_auth {
const char *sasl_mech;
const char *initial_response;
};
struct smtp_server_callbacks {
/* Command callbacks:
These are used to override/implement the behavior of the various core
SMTP commands. Commands are handled asynchronously, which means that
the command is not necessarily finished when the callback ends. A
command is finished either when 1 is returned or a reply is submitted
for it. When a callback returns 0, the command implementation is
waiting for an external event and when it returns -1 an error
occurred. When 1 is returned, a default success reply is set if no
reply was submitted. Not submitting an error reply when -1 is
returned causes an assert fail. Except for RCPT and DATA, all these
callbacks are optional to implement; appropriate default behavior is
provided.
The SMTP server API takes care of transaction state checking.
However, until all previous commands are handled, a transaction
command cannot rely on the transaction state being final. Use
cmd->hook_next to get notified when all previous commands are
finished and the current command is next in line to reply.
If the implementation does not need asynchronous behavior, set
max_pipelined_commands=1 and don't return 0 from any command handler.
*/
/* HELO/EHLO/LHLO */
int (*conn_cmd_helo)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd,
struct smtp_server_cmd_helo *data);
/* STARTTLS */
int (*conn_cmd_starttls)(void *conn_ctx,
struct smtp_server_cmd_ctx *cmd);
/* AUTH */
int (*conn_cmd_auth)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd,
struct smtp_server_cmd_auth *data);
int (*conn_cmd_auth_continue)(void *conn_ctx,
struct smtp_server_cmd_ctx *cmd,
const char *response);
/* MAIL */
int (*conn_cmd_mail)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd,
struct smtp_server_cmd_mail *data);
/* RCPT */
int (*conn_cmd_rcpt)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd,
struct smtp_server_recipient *rcpt);
/* RSET */
int (*conn_cmd_rset)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd);
/* DATA */
int (*conn_cmd_data_begin)(void *conn_ctx,
struct smtp_server_cmd_ctx *cmd,
struct smtp_server_transaction *trans,
struct istream *data_input);
int (*conn_cmd_data_continue)(void *conn_ctx,
struct smtp_server_cmd_ctx *cmd,
struct smtp_server_transaction *trans);
/* VRFY */
int (*conn_cmd_vrfy)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd,
const char *param);
/* NOOP */
int (*conn_cmd_noop)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd);
/* QUIT */
int (*conn_cmd_quit)(void *conn_ctx, struct smtp_server_cmd_ctx *cmd);
/* XCLIENT */
void (*conn_cmd_xclient)(void *conn_ctx,
struct smtp_server_cmd_ctx *cmd,
struct smtp_proxy_data *data);
/* Command input callbacks:
These can be used to do stuff before and after a pipelined group of
commands is read.
*/
void (*conn_cmd_input_pre)(void *context);
void (*conn_cmd_input_post)(void *context);
/* Transaction events */
void (*conn_trans_start)(void *context,
struct smtp_server_transaction *trans);
void (*conn_trans_free)(void *context,
struct smtp_server_transaction *trans);
/* Protocol state events */
void (*conn_state_changed)(void *context,
enum smtp_server_state new_state,
const char *new_args) ATTR_NULL(3);
/* Proxy data */
void (*conn_proxy_data_updated)(void *conn_ctx,
const struct smtp_proxy_data *data);
/* Connection */
int (*conn_start_tls)(void *conn_ctx,
struct istream **input, struct ostream **output);
/* Connection is disconnected. This is always called before
conn_free(). */
void (*conn_disconnect)(void *context, const char *reason);
/* The last reference to connection is dropped, causing the connection
to be freed. */
void (*conn_free)(void *context);
/* Security */
bool (*conn_is_trusted)(void *context);
};
/*
* Server
*/
enum smtp_server_workarounds {
SMTP_SERVER_WORKAROUND_WHITESPACE_BEFORE_PATH = BIT(0),
SMTP_SERVER_WORKAROUND_MAILBOX_FOR_PATH = BIT(1)
};
struct smtp_server_settings {
/* The protocol we are serving */
enum smtp_protocol protocol;
/* Standard capabilities supported by the server */
enum smtp_capability capabilities;
/* Enabled workarounds for client protocol deviations */
enum smtp_server_workarounds workarounds;
/* Module name for event reason codes. */
const char *reason_code_module;
/* Our hostname as presented to the client */
const char *hostname;
/* The message sent in the SMTP server greeting */
const char *login_greeting;
/* The directory that - if it exists and is accessible - is used to
write raw protocol logs for debugging */
const char *rawlog_dir;
/* SSL settings; if NULL, master_service_ssl_init() is used instead */
const struct ssl_iostream_settings *ssl;
/* The maximum time in milliseconds a client is allowed to be idle
before it is disconnected. */
unsigned int max_client_idle_time_msecs;
/* Maximum number of commands in pipeline per connection (default = 1)
*/
unsigned int max_pipelined_commands;
/* Maximum number of sequential bad commands */
unsigned int max_bad_commands;
/* Maximum number of recipients in a transaction
(0 means unlimited, which is the default) */
unsigned int max_recipients;
/* Command limits */
struct smtp_command_limits command_limits;
/* Message size limit */
uoff_t max_message_size;
/* Accept these additional custom MAIL parameters */
const char *const *mail_param_extensions;
/* Accept these additional custom RCPT parameters */
const char *const *rcpt_param_extensions;
/* Accept these additional custom XCLIENT fields */
const char *const *xclient_extensions;
/* The kernel send/receive buffer sizes used for the connection sockets.
Configuring this is mainly useful for the test suite. The kernel
defaults are used when these settings are 0. */
size_t socket_send_buffer_size;
size_t socket_recv_buffer_size;
/* Event to use for the smtp server. */
struct event *event_parent;
/* Enable logging debug messages */
bool debug:1;
/* Authentication is not required for this service */
bool auth_optional:1;
/* TLS security is required for this service */
bool tls_required:1;
/* The path provided to the MAIL command does not need to be valid. A
completely invalid path will parse as <>. Paths that can still be
fixed by splitting it on the last `@' yielding a usable localpart and
domain, will be parsed as such. There are limits though; when the
path is badly delimited or contains control characters, the MAIL
command will still fail. The unparsed broken address will be
available in the `raw' field of struct smtp_address for logging etc.
*/
bool mail_path_allow_broken:1;
/* The path provided to the RCPT command does not need to have the
domain part. */
bool rcpt_domain_optional:1;
/* Don't include "(state=%s)" in the disconnection reason string. */
bool no_state_in_reason:1;
/* Don't send a greeting or login success message to the client upon
connection start. */
bool no_greeting:1;
};
struct smtp_server_stats {
unsigned int command_count, reply_count;
uoff_t input, output;
};
/*
* Server
*/
struct smtp_server *smtp_server_init(const struct smtp_server_settings *set);
void smtp_server_deinit(struct smtp_server **_server);
void smtp_server_switch_ioloop(struct smtp_server *server);
/*
* Connection
*/
/* Create connection. It is still inactive and needs to be started with
one of the functions below. */
struct smtp_server_connection *
smtp_server_connection_create(
struct smtp_server *server, int fd_in, int fd_out,
const struct ip_addr *remote_ip, in_port_t remote_port, bool ssl_start,
const struct smtp_server_settings *set,
const struct smtp_server_callbacks *callbacks, void *context)
ATTR_NULL(4, 6, 8);
struct smtp_server_connection *
smtp_server_connection_create_from_streams(
struct smtp_server *server,
struct istream *input, struct ostream *output,
const struct ip_addr *remote_ip, in_port_t remote_port,
const struct smtp_server_settings *set,
const struct smtp_server_callbacks *callbacks, void *context)
ATTR_NULL(4, 6, 8);
void smtp_server_connection_ref(struct smtp_server_connection *conn);
bool smtp_server_connection_unref(struct smtp_server_connection **_conn);
/* Initialize the connection with state and data from login service */
void smtp_server_connection_login(struct smtp_server_connection *conn,
const char *username, const char *helo,
const unsigned char *pdata,
unsigned int pdata_len, bool ssl_secured);
/* Start the connection. Establishes SSL layer immediately if instructed,
and sends the greeting once the connection is ready for commands. */
void smtp_server_connection_start(struct smtp_server_connection *conn);
/* Start the connection, but only establish SSL layer and send greeting;
handling command input is held off until smtp_server_connection_resume() is
called. */
void smtp_server_connection_start_pending(struct smtp_server_connection *conn);
/* Abort the connection prematurely (before it is started). */
void smtp_server_connection_abort(struct smtp_server_connection **_conn,
unsigned int status, const char *enh_code,
const char *reason);
/* Halt connection command input and idle timeout entirely. */
void smtp_server_connection_halt(struct smtp_server_connection *conn);
/* Resume connection command input and idle timeout. */
void smtp_server_connection_resume(struct smtp_server_connection *conn);
void smtp_server_connection_input_lock(struct smtp_server_connection *conn);
void smtp_server_connection_input_unlock(struct smtp_server_connection *conn);
void smtp_server_connection_set_streams(struct smtp_server_connection *conn,
struct istream *input,
struct ostream *output);
void smtp_server_connection_set_ssl_streams(struct smtp_server_connection *conn,
struct istream *input,
struct ostream *output);
void smtp_server_connection_close(struct smtp_server_connection **_conn,
const char *reason) ATTR_NULL(2);
void smtp_server_connection_terminate(struct smtp_server_connection **_conn,
const char *enh_code, const char *reason)
ATTR_NULL(3);
bool smtp_server_connection_data_check_state(struct smtp_server_cmd_ctx *cmd);
void smtp_server_connection_data_chunk_init(struct smtp_server_cmd_ctx *cmd);
int smtp_server_connection_data_chunk_add(struct smtp_server_cmd_ctx *cmd,
struct istream *chunk,
uoff_t chunk_size, bool chunk_last,
bool client_input);
enum smtp_server_state
smtp_server_connection_get_state(struct smtp_server_connection *conn,
const char **args_r) ATTR_NULL(2);
const char *
smtp_server_connection_get_security_string(struct smtp_server_connection *conn);
struct smtp_server_transaction *
smtp_server_connection_get_transaction(struct smtp_server_connection *conn);
const char *
smtp_server_connection_get_transaction_id(struct smtp_server_connection *conn);
const struct smtp_server_stats *
smtp_server_connection_get_stats(struct smtp_server_connection *conn);
void *smtp_server_connection_get_context(struct smtp_server_connection *conn)
ATTR_PURE;
enum smtp_protocol
smtp_server_connection_get_protocol(struct smtp_server_connection *conn)
ATTR_PURE;
const char *
smtp_server_connection_get_protocol_name(struct smtp_server_connection *conn);
struct smtp_server_helo_data *
smtp_server_connection_get_helo_data(struct smtp_server_connection *conn);
void smtp_server_connection_get_proxy_data(struct smtp_server_connection *conn,
struct smtp_proxy_data *proxy_data);
void smtp_server_connection_set_proxy_data(
struct smtp_server_connection *conn,
const struct smtp_proxy_data *proxy_data);
void smtp_server_connection_set_capabilities(
struct smtp_server_connection *conn, enum smtp_capability capabilities);
void smtp_server_connection_add_extra_capability(
struct smtp_server_connection *conn,
const struct smtp_capability_extra *cap);
void smtp_server_connection_register_mail_param(
struct smtp_server_connection *conn, const char *param);
void smtp_server_connection_register_rcpt_param(
struct smtp_server_connection *conn, const char *param);
bool smtp_server_connection_is_ssl_secured(struct smtp_server_connection *conn);
bool smtp_server_connection_is_trusted(struct smtp_server_connection *conn);
/*
* Command
*/
enum smtp_server_command_flags {
SMTP_SERVER_CMD_FLAG_PRETLS = BIT(0),
SMTP_SERVER_CMD_FLAG_PREAUTH = BIT(1)
};
enum smtp_server_command_hook_type {
/* next: command is next to reply but has not submittted all replies
yet. */
SMTP_SERVER_COMMAND_HOOK_NEXT,
/* replied_one: command has submitted one reply. */
SMTP_SERVER_COMMAND_HOOK_REPLIED_ONE,
/* replied: command has submitted all replies. */
SMTP_SERVER_COMMAND_HOOK_REPLIED,
/* completed: server is about to send last replies for this command. */
SMTP_SERVER_COMMAND_HOOK_COMPLETED,
/* destroy: command is about to be destroyed. */
SMTP_SERVER_COMMAND_HOOK_DESTROY
};
/* Commands are handled asynchronously, which means that the command is not
necessary finished when the start function ends. A command is finished
when a reply is submitted for it. Several command hooks are available to
get notified about events in the command's life cycle.
*/
typedef void smtp_server_cmd_input_callback_t(struct smtp_server_cmd_ctx *cmd);
typedef void smtp_server_cmd_start_func_t(struct smtp_server_cmd_ctx *cmd,
const char *params);
typedef void smtp_server_cmd_func_t(struct smtp_server_cmd_ctx *cmd,
void *context);
struct smtp_server_cmd_ctx {
pool_t pool;
struct event *event;
const char *name;
struct smtp_server *server;
struct smtp_server_connection *conn;
struct smtp_server_command *cmd;
};
/* Hooks:
*/
void smtp_server_command_add_hook(struct smtp_server_command *cmd,
enum smtp_server_command_hook_type type,
smtp_server_cmd_func_t func,
void *context);
#define smtp_server_command_add_hook(_cmd, _type, _func, _context) \
smtp_server_command_add_hook((_cmd), (_type) - \
CALLBACK_TYPECHECK(_func, void (*)( \
struct smtp_server_cmd_ctx *, typeof(_context))), \
(smtp_server_cmd_func_t *)(_func), (_context))
void smtp_server_command_remove_hook(struct smtp_server_command *cmd,
enum smtp_server_command_hook_type type,
smtp_server_cmd_func_t *func);
#define smtp_server_command_remove_hook(_cmd, _type, _func) \
smtp_server_command_remove_hook((_cmd), (_type), \
(smtp_server_cmd_func_t *)(_func));
/* The core SMTP commands are pre-registered. Special connection callbacks are
provided for the core SMTP commands. Only use this command registration API
when custom/extension SMTP commands are required. It is also possible to
completely override the default implementations.
*/
void smtp_server_command_register(struct smtp_server *server, const char *name,
smtp_server_cmd_start_func_t *func,
enum smtp_server_command_flags);
void smtp_server_command_unregister(struct smtp_server *server,
const char *name);
void smtp_server_command_override(struct smtp_server *server, const char *name,
smtp_server_cmd_start_func_t *func,
enum smtp_server_command_flags flags);
void smtp_server_command_set_reply_count(struct smtp_server_command *cmd,
unsigned int count);
unsigned int
smtp_server_command_get_reply_count(struct smtp_server_command *cmd);
void smtp_server_command_fail(struct smtp_server_command *cmd,
unsigned int status, const char *enh_code,
const char *fmt, ...) ATTR_FORMAT(4, 5);
struct smtp_server_reply *
smtp_server_command_get_reply(struct smtp_server_command *cmd,
unsigned int idx);
bool smtp_server_command_reply_status_equals(struct smtp_server_command *cmd,
unsigned int status);
bool smtp_server_command_is_replied(struct smtp_server_command *cmd);
bool smtp_server_command_reply_is_forwarded(struct smtp_server_command *cmd);
bool smtp_server_command_replied_success(struct smtp_server_command *cmd);
void smtp_server_command_input_lock(struct smtp_server_cmd_ctx *cmd);
void smtp_server_command_input_unlock(struct smtp_server_cmd_ctx *cmd);
void smtp_server_command_input_capture(
struct smtp_server_cmd_ctx *cmd,
smtp_server_cmd_input_callback_t *callback);
void smtp_server_command_pipeline_block(struct smtp_server_cmd_ctx *cmd);
void smtp_server_command_pipeline_unblock(struct smtp_server_cmd_ctx *cmd);
/* EHLO */
void smtp_server_cmd_ehlo(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_helo(struct smtp_server_cmd_ctx *cmd, const char *params);
struct smtp_server_reply *
smtp_server_cmd_ehlo_reply_create(struct smtp_server_cmd_ctx *cmd);
void smtp_server_cmd_ehlo_reply_default(struct smtp_server_cmd_ctx *cmd);
/* STARTTLS */
void smtp_server_cmd_starttls(struct smtp_server_cmd_ctx *cmd,
const char *params);
/* AUTH */
void smtp_server_cmd_auth(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_auth_send_challenge(struct smtp_server_cmd_ctx *cmd,
const char *challenge);
void smtp_server_cmd_auth_success(struct smtp_server_cmd_ctx *cmd,
const char *username, const char *success_msg)
ATTR_NULL(3);
/* MAIL */
void smtp_server_cmd_mail(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_mail_reply_success(struct smtp_server_cmd_ctx *cmd);
/* RCPT */
void smtp_server_cmd_rcpt(struct smtp_server_cmd_ctx *cmd, const char *params);
bool smtp_server_command_is_rcpt(struct smtp_server_cmd_ctx *cmd);
void smtp_server_cmd_rcpt_reply_success(struct smtp_server_cmd_ctx *cmd);
/* RSET */
void smtp_server_cmd_rset(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_rset_reply_success(struct smtp_server_cmd_ctx *cmd);
/* DATA */
void smtp_server_cmd_data(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_bdat(struct smtp_server_cmd_ctx *cmd, const char *params);
bool smtp_server_cmd_data_check_size(struct smtp_server_cmd_ctx *cmd);
/* VRFY */
void smtp_server_cmd_vrfy(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_vrfy_reply_default(struct smtp_server_cmd_ctx *cmd);
/* NOOP */
void smtp_server_cmd_noop(struct smtp_server_cmd_ctx *cmd, const char *params);
void smtp_server_cmd_noop_reply_success(struct smtp_server_cmd_ctx *cmd);
/* QUIT */
void smtp_server_cmd_quit(struct smtp_server_cmd_ctx *cmd, const char *params);
/* XCLIENT */
void smtp_server_cmd_xclient(struct smtp_server_cmd_ctx *cmd,
const char *params);
/*
* Reply
*/
struct smtp_server_reply *
smtp_server_reply_create_index(struct smtp_server_command *cmd,
unsigned int index, unsigned int status,
const char *enh_code) ATTR_NULL(3);
struct smtp_server_reply *
smtp_server_reply_create(struct smtp_server_command *cmd, unsigned int status,
const char *enh_code) ATTR_NULL(3);
struct smtp_server_reply *
smtp_server_reply_create_forward(struct smtp_server_command *cmd,
unsigned int index,
const struct smtp_reply *from);
void smtp_server_reply_set_status(struct smtp_server_reply *reply,
unsigned int status, const char *enh_code)
ATTR_NULL(3);
unsigned int smtp_server_reply_get_status(struct smtp_server_reply *reply,
const char **enh_code_r) ATTR_NULL(3);
void smtp_server_reply_add_text(struct smtp_server_reply *reply,
const char *line);
void smtp_server_reply_prepend_text(struct smtp_server_reply *reply,
const char *text_prefix);
void smtp_server_reply_replace_path(struct smtp_server_reply *reply,
struct smtp_address *path, bool add);
void smtp_server_reply_submit(struct smtp_server_reply *reply);
void smtp_server_reply_submit_duplicate(struct smtp_server_cmd_ctx *_cmd,
unsigned int index,
unsigned int from_index);
/* Submit a reply for the command at the specified index (> 0 only if more than
a single reply is expected). */
void smtp_server_reply_indexv(struct smtp_server_cmd_ctx *_cmd,
unsigned int index, unsigned int status,
const char *enh_code,
const char *fmt, va_list args) ATTR_FORMAT(5, 0);
void smtp_server_reply_index(struct smtp_server_cmd_ctx *_cmd,
unsigned int index, unsigned int status,
const char *enh_code, const char *fmt, ...)
ATTR_FORMAT(5, 6);
/* Submit the reply for the specified command. */
void smtp_server_reply(struct smtp_server_cmd_ctx *_cmd, unsigned int status,
const char *enh_code, const char *fmt, ...)
ATTR_FORMAT(4, 5);
/* Forward a reply for the command at the specified index (> 0 only if more
than a single reply is expected). */
void smtp_server_reply_index_forward(struct smtp_server_cmd_ctx *cmd,
unsigned int index,
const struct smtp_reply *from);
/* Forward the reply for the specified command. */
void smtp_server_reply_forward(struct smtp_server_cmd_ctx *cmd,
const struct smtp_reply *from);
/* Submit the same message for all expected replies for this command. */
void smtp_server_reply_all(struct smtp_server_cmd_ctx *_cmd,
unsigned int status, const char *enh_code,
const char *fmt, ...) ATTR_FORMAT(4, 5);
/* Submit and send the same message for all expected replies for this command
early; i.e., no matter whether all command data is received completely. */
void smtp_server_reply_early(struct smtp_server_cmd_ctx *_cmd,
unsigned int status, const char *enh_code,
const char *fmt, ...) ATTR_FORMAT(4, 5);
/* Reply the command with a 221 bye message */
void smtp_server_reply_quit(struct smtp_server_cmd_ctx *_cmd);
bool smtp_server_reply_is_success(const struct smtp_server_reply *reply);
/* EHLO */
struct smtp_server_reply *
smtp_server_reply_create_ehlo(struct smtp_server_command *cmd);
void smtp_server_reply_ehlo_add(struct smtp_server_reply *reply,
const char *keyword);
void smtp_server_reply_ehlo_add_param(struct smtp_server_reply *reply,
const char *keyword,
const char *param_fmt, ...)
ATTR_FORMAT(3, 4);
void smtp_server_reply_ehlo_add_params(struct smtp_server_reply *reply,
const char *keyword,
const char *const *params) ATTR_NULL(3);
void smtp_server_reply_ehlo_add_8bitmime(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_binarymime(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_chunking(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_dsn(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_enhancedstatuscodes(
struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_pipelining(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_size(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_starttls(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_vrfy(struct smtp_server_reply *reply);
void smtp_server_reply_ehlo_add_xclient(struct smtp_server_reply *reply);
#endif