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#ifndef SMTP_COMMON_H
#define SMTP_COMMON_H
#include "net.h"
/*
* Limits
*/
#define SMTP_BASE_LINE_LENGTH_LIMIT (512 - 2)
/*
* SMTP protocols
*/
enum smtp_protocol {
SMTP_PROTOCOL_SMTP = 0,
SMTP_PROTOCOL_LMTP
};
static inline const char *
smtp_protocol_name(enum smtp_protocol proto)
{
switch (proto) {
case SMTP_PROTOCOL_SMTP:
return "smtp";
case SMTP_PROTOCOL_LMTP:
return "lmtp";
default:
break;
}
i_unreached();
}
/* SMTP capabilities */
enum smtp_capability {
SMTP_CAPABILITY_NONE = 0,
SMTP_CAPABILITY_AUTH = BIT(0),
SMTP_CAPABILITY_STARTTLS = BIT(1),
SMTP_CAPABILITY_PIPELINING = BIT(2),
SMTP_CAPABILITY_SIZE = BIT(3),
SMTP_CAPABILITY_ENHANCEDSTATUSCODES = BIT(4),
SMTP_CAPABILITY_8BITMIME = BIT(5),
SMTP_CAPABILITY_CHUNKING = BIT(6),
SMTP_CAPABILITY_BINARYMIME = BIT(7),
SMTP_CAPABILITY_BURL = BIT(8),
SMTP_CAPABILITY_DSN = BIT(9),
SMTP_CAPABILITY_VRFY = BIT(10),
SMTP_CAPABILITY_ETRN = BIT(11),
SMTP_CAPABILITY_XCLIENT = BIT(12),
SMTP_CAPABILITY__ORCPT = BIT(24),
};
struct smtp_capability_name {
const char *name;
enum smtp_capability capability;
};
struct smtp_capability_extra {
const char *name;
const char *const *params;
};
extern const struct smtp_capability_name smtp_capability_names[];
enum smtp_capability smtp_capability_find_by_name(const char *cap_name);
/*
* SMTP proxy data
*/
enum smtp_proxy_protocol {
SMTP_PROXY_PROTOCOL_UNKNOWN = 0,
SMTP_PROXY_PROTOCOL_SMTP,
SMTP_PROXY_PROTOCOL_ESMTP,
SMTP_PROXY_PROTOCOL_LMTP
};
struct smtp_proxy_data_field {
const char *name;
const char *value;
};
ARRAY_DEFINE_TYPE(smtp_proxy_data_field, struct smtp_proxy_data_field);
struct smtp_proxy_data {
/* PROTO */
enum smtp_proxy_protocol proto;
/* ADDR */
struct ip_addr source_ip;
/* PORT */
in_port_t source_port;
/* HELO, LOGIN */
const char *helo, *login;
/* SESSION */
const char *session;
/* TTL: send as this -1, so the default 0 means "don't send it" */
unsigned int ttl_plus_1;
/* TIMEOUT: remote is notified that the connection is going to be closed
after this many seconds, so it should try to keep lock waits and such
lower than this. */
unsigned int timeout_secs;
/* additional fields */
const struct smtp_proxy_data_field *extra_fields;
unsigned int extra_fields_count;
};
/*
* SMTP proxy data
*/
void smtp_proxy_data_merge(pool_t pool, struct smtp_proxy_data *dst,
const struct smtp_proxy_data *src);
#endif
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