/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_MAIL_H_INCLUDED_
#define _NGX_MAIL_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_event_connect.h>
#if (NGX_MAIL_SSL)
#include <ngx_mail_ssl_module.h>
#endif
typedef struct {
void **main_conf;
void **srv_conf;
} ngx_mail_conf_ctx_t;
typedef struct {
struct sockaddr *sockaddr;
socklen_t socklen;
ngx_str_t addr_text;
/* server ctx */
ngx_mail_conf_ctx_t *ctx;
unsigned bind:1;
unsigned wildcard:1;
unsigned ssl:1;
#if (NGX_HAVE_INET6)
unsigned ipv6only:1;
#endif
unsigned so_keepalive:2;
unsigned proxy_protocol:1;
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
int tcp_keepidle;
int tcp_keepintvl;
int tcp_keepcnt;
#endif
int backlog;
int rcvbuf;
int sndbuf;
} ngx_mail_listen_t;
typedef struct {
ngx_mail_conf_ctx_t *ctx;
ngx_str_t addr_text;
unsigned ssl:1;
unsigned proxy_protocol:1;
} ngx_mail_addr_conf_t;
typedef struct {
in_addr_t addr;
ngx_mail_addr_conf_t conf;
} ngx_mail_in_addr_t;
#if (NGX_HAVE_INET6)
typedef struct {
struct in6_addr addr6;
ngx_mail_addr_conf_t conf;
} ngx_mail_in6_addr_t;
#endif
typedef struct {
/* ngx_mail_in_addr_t or ngx_mail_in6_addr_t */
void *addrs;
ngx_uint_t naddrs;
} ngx_mail_port_t;
typedef struct {
int family;
in_port_t port;
ngx_array_t addrs; /* array of ngx_mail_conf_addr_t */
} ngx_mail_conf_port_t;
typedef struct {
ngx_mail_listen_t opt;
} ngx_mail_conf_addr_t;
typedef struct {
ngx_array_t servers; /* ngx_mail_core_srv_conf_t */
ngx_array_t listen; /* ngx_mail_listen_t */
} ngx_mail_core_main_conf_t;
#define NGX_MAIL_POP3_PROTOCOL 0
#define NGX_MAIL_IMAP_PROTOCOL 1
#define NGX_MAIL_SMTP_PROTOCOL 2
typedef struct ngx_mail_protocol_s ngx_mail_protocol_t;
typedef struct {
ngx_mail_protocol_t *protocol;
ngx_msec_t timeout;
ngx_msec_t resolver_timeout;
ngx_uint_t max_errors;
ngx_str_t server_name;
u_char *file_name;
ngx_uint_t line;
ngx_resolver_t *resolver;
ngx_log_t *error_log;
/* server ctx */
ngx_mail_conf_ctx_t *ctx;
ngx_uint_t listen; /* unsigned listen:1; */
} ngx_mail_core_srv_conf_t;
typedef enum {
ngx_pop3_start = 0,
ngx_pop3_user,
ngx_pop3_passwd,
ngx_pop3_auth_login_username,
ngx_pop3_auth_login_password,
ngx_pop3_auth_plain,
ngx_pop3_auth_cram_md5,
ngx_pop3_auth_external
} ngx_pop3_state_e;
typedef enum {
ngx_imap_start = 0,
ngx_imap_auth_login_username,
ngx_imap_auth_login_password,
ngx_imap_auth_plain,
ngx_imap_auth_cram_md5,
ngx_imap_auth_external,
ngx_imap_login,
ngx_imap_user,
ngx_imap_passwd
} ngx_imap_state_e;
typedef enum {
ngx_smtp_start = 0,
ngx_smtp_auth_login_username,
ngx_smtp_auth_login_password,
ngx_smtp_auth_plain,
ngx_smtp_auth_cram_md5,
ngx_smtp_auth_external,
ngx_smtp_helo,
ngx_smtp_helo_xclient,
ngx_smtp_helo_auth,
ngx_smtp_helo_from,
ngx_smtp_xclient,
ngx_smtp_xclient_from,
ngx_smtp_xclient_helo,
ngx_smtp_xclient_auth,
ngx_smtp_from,
ngx_smtp_to
} ngx_smtp_state_e;
typedef struct {
ngx_peer_connection_t upstream;
ngx_buf_t *buffer;
ngx_uint_t proxy_protocol; /* unsigned proxy_protocol:1; */
} ngx_mail_proxy_ctx_t;
typedef struct {
uint32_t signature; /* "MAIL" */
ngx_connection_t *connection;
ngx_str_t out;
ngx_buf_t *buffer;
void **ctx;
void **main_conf;
void **srv_conf;
ngx_resolver_ctx_t *resolver_ctx;
ngx_mail_proxy_ctx_t *proxy;
ngx_uint_t mail_state;
unsigned ssl:1;
unsigned protocol:3;
unsigned blocked:1;
unsigned quit:1;
unsigned quoted:1;
unsigned backslash:1;
unsigned no_sync_literal:1;
unsigned starttls:1;
unsigned esmtp:1;
unsigned auth_method:3;
unsigned auth_wait:1;
ngx_str_t login;
ngx_str_t passwd;
ngx_str_t salt;
ngx_str_t tag;
ngx_str_t tagged_line;
ngx_str_t text;
ngx_str_t *addr_text;
ngx_str_t host;
ngx_str_t smtp_helo;
ngx_str_t smtp_from;
ngx_str_t smtp_to;
ngx_str_t cmd;
ngx_uint_t command;
ngx_array_t args;
ngx_uint_t errors;
ngx_uint_t login_attempt;
/* used to parse POP3/IMAP/SMTP command */
ngx_uint_t state;
u_char *tag_start;
u_char *cmd_start;
u_char *arg_start;
ngx_uint_t literal_len;
} ngx_mail_session_t;
typedef struct {
ngx_str_t *client;
ngx_mail_session_t *session;
} ngx_mail_log_ctx_t;
#define NGX_POP3_USER 1
#define NGX_POP3_PASS 2
#define NGX_POP3_CAPA 3
#define NGX_POP3_QUIT 4
#define NGX_POP3_NOOP 5
#define NGX_POP3_STLS 6
#define NGX_POP3_APOP 7
#define NGX_POP3_AUTH 8
#define NGX_POP3_STAT 9
#define NGX_POP3_LIST 10
#define NGX_POP3_RETR 11
#define NGX_POP3_DELE 12
#define NGX_POP3_RSET 13
#define NGX_POP3_TOP 14
#define NGX_POP3_UIDL 15
#define NGX_IMAP_LOGIN 1
#define NGX_IMAP_LOGOUT 2
#define NGX_IMAP_CAPABILITY 3
#define NGX_IMAP_NOOP 4
#define NGX_IMAP_STARTTLS 5
#define NGX_IMAP_NEXT 6
#define NGX_IMAP_AUTHENTICATE 7
#define NGX_SMTP_HELO 1
#define NGX_SMTP_EHLO 2
#define NGX_SMTP_AUTH 3
#define NGX_SMTP_QUIT 4
#define NGX_SMTP_NOOP 5
#define NGX_SMTP_MAIL 6
#define NGX_SMTP_RSET 7
#define NGX_SMTP_RCPT 8
#define NGX_SMTP_DATA 9
#define NGX_SMTP_VRFY 10
#define NGX_SMTP_EXPN 11
#define NGX_SMTP_HELP 12
#define NGX_SMTP_STARTTLS 13
#define NGX_MAIL_AUTH_PLAIN 0
#define NGX_MAIL_AUTH_LOGIN 1
#define NGX_MAIL_AUTH_LOGIN_USERNAME 2
#define NGX_MAIL_AUTH_APOP 3
#define NGX_MAIL_AUTH_CRAM_MD5 4
#define NGX_MAIL_AUTH_EXTERNAL 5
#define NGX_MAIL_AUTH_NONE 6
#define NGX_MAIL_AUTH_PLAIN_ENABLED 0x0002
#define NGX_MAIL_AUTH_LOGIN_ENABLED 0x0004
#define NGX_MAIL_AUTH_APOP_ENABLED 0x0008
#define NGX_MAIL_AUTH_CRAM_MD5_ENABLED 0x0010
#define NGX_MAIL_AUTH_EXTERNAL_ENABLED 0x0020
#define NGX_MAIL_AUTH_NONE_ENABLED 0x0040
#define NGX_MAIL_PARSE_INVALID_COMMAND 20
typedef void (*ngx_mail_init_session_pt)(ngx_mail_session_t *s,
ngx_connection_t *c);
typedef void (*ngx_mail_init_protocol_pt)(ngx_event_t *rev);
typedef void (*ngx_mail_auth_state_pt)(ngx_event_t *rev);
typedef ngx_int_t (*ngx_mail_parse_command_pt)(ngx_mail_session_t *s);
struct ngx_mail_protocol_s {
ngx_str_t name;
ngx_str_t alpn;
in_port_t port[4];
ngx_uint_t type;
ngx_mail_init_session_pt init_session;
ngx_mail_init_protocol_pt init_protocol;
ngx_mail_parse_command_pt parse_command;
ngx_mail_auth_state_pt auth_state;
ngx_str_t internal_server_error;
ngx_str_t cert_error;
ngx_str_t no_cert;
};
typedef struct {
ngx_mail_protocol_t *protocol;
void *(*create_main_conf)(ngx_conf_t *cf);
char *(*init_main_conf)(ngx_conf_t *cf, void *conf);
void *(*create_srv_conf)(ngx_conf_t *cf);
char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev,
void *conf);
} ngx_mail_module_t;
#define NGX_MAIL_MODULE 0x4C49414D /* "MAIL" */
#define NGX_MAIL_MAIN_CONF 0x02000000
#define NGX_MAIL_SRV_CONF 0x04000000
#define NGX_MAIL_MAIN_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, main_conf)
#define NGX_MAIL_SRV_CONF_OFFSET offsetof(ngx_mail_conf_ctx_t, srv_conf)
#define ngx_mail_get_module_ctx(s, module) (s)->ctx[module.ctx_index]
#define ngx_mail_set_ctx(s, c, module) s->ctx[module.ctx_index] = c;
#define ngx_mail_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL;
#define ngx_mail_get_module_main_conf(s, module) \
(s)->main_conf[module.ctx_index]
#define ngx_mail_get_module_srv_conf(s, module) (s)->srv_conf[module.ctx_index]
#define ngx_mail_conf_get_module_main_conf(cf, module) \
((ngx_mail_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index]
#define ngx_mail_conf_get_module_srv_conf(cf, module) \
((ngx_mail_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index]
#if (NGX_MAIL_SSL)
void ngx_mail_starttls_handler(ngx_event_t *rev);
ngx_int_t ngx_mail_starttls_only(ngx_mail_session_t *s, ngx_connection_t *c);
#endif
void ngx_mail_init_connection(ngx_connection_t *c);
ngx_int_t ngx_mail_salt(ngx_mail_session_t *s, ngx_connection_t *c,
ngx_mail_core_srv_conf_t *cscf);
ngx_int_t ngx_mail_auth_plain(ngx_mail_session_t *s, ngx_connection_t *c,
ngx_uint_t n);
ngx_int_t ngx_mail_auth_login_username(ngx_mail_session_t *s,
ngx_connection_t *c, ngx_uint_t n);
ngx_int_t ngx_mail_auth_login_password(ngx_mail_session_t *s,
ngx_connection_t *c);
ngx_int_t ngx_mail_auth_cram_md5_salt(ngx_mail_session_t *s,
ngx_connection_t *c, char *prefix, size_t len);
ngx_int_t ngx_mail_auth_cram_md5(ngx_mail_session_t *s, ngx_connection_t *c);
ngx_int_t ngx_mail_auth_external(ngx_mail_session_t *s, ngx_connection_t *c,
ngx_uint_t n);
ngx_int_t ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c);
void ngx_mail_send(ngx_event_t *wev);
ngx_int_t ngx_mail_read_command(ngx_mail_session_t *s, ngx_connection_t *c);
void ngx_mail_auth(ngx_mail_session_t *s, ngx_connection_t *c);
void ngx_mail_close_connection(ngx_connection_t *c);
void ngx_mail_session_internal_server_error(ngx_mail_session_t *s);
u_char *ngx_mail_log_error(ngx_log_t *log, u_char *buf, size_t len);
char *ngx_mail_capabilities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
/* STUB */
void ngx_mail_proxy_init(ngx_mail_session_t *s, ngx_addr_t *peer);
void ngx_mail_auth_http_init(ngx_mail_session_t *s);
ngx_int_t ngx_mail_realip_handler(ngx_mail_session_t *s);
/**/
extern ngx_uint_t ngx_mail_max_module;
extern ngx_module_t ngx_mail_core_module;
#endif /* _NGX_MAIL_H_INCLUDED_ */
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