3 * Copyright (C) Igor Sysoev
7 #include <ngx_config.h>
11 #include <ngx_mail_smtp_module.h>
14 static void *ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf);
15 static char *ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent,
19 static ngx_conf_bitmask_t ngx_mail_smtp_auth_methods[] = {
20 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED },
21 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED },
22 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED },
23 { ngx_string("none"), NGX_MAIL_AUTH_NONE_ENABLED },
24 { ngx_null_string, 0 }
28 static ngx_str_t ngx_mail_smtp_auth_methods_names[] = {
31 ngx_null_string, /* APOP */
32 ngx_string("CRAM-MD5"),
33 ngx_null_string /* NONE */
37 static ngx_mail_protocol_t ngx_mail_smtp_protocol = {
40 NGX_MAIL_SMTP_PROTOCOL,
42 ngx_mail_smtp_init_session,
43 ngx_mail_smtp_init_protocol,
44 ngx_mail_smtp_parse_command,
45 ngx_mail_smtp_auth_state,
47 ngx_string("451 4.3.2 Internal server error" CRLF)
51 static ngx_command_t ngx_mail_smtp_commands[] = {
53 { ngx_string("smtp_client_buffer"),
54 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
55 ngx_conf_set_size_slot,
56 NGX_MAIL_SRV_CONF_OFFSET,
57 offsetof(ngx_mail_smtp_srv_conf_t, client_buffer_size),
60 { ngx_string("smtp_greeting_delay"),
61 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
62 ngx_conf_set_msec_slot,
63 NGX_MAIL_SRV_CONF_OFFSET,
64 offsetof(ngx_mail_smtp_srv_conf_t, greeting_delay),
67 { ngx_string("smtp_capabilities"),
68 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE,
69 ngx_mail_capabilities,
70 NGX_MAIL_SRV_CONF_OFFSET,
71 offsetof(ngx_mail_smtp_srv_conf_t, capabilities),
74 { ngx_string("smtp_auth"),
75 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE,
76 ngx_conf_set_bitmask_slot,
77 NGX_MAIL_SRV_CONF_OFFSET,
78 offsetof(ngx_mail_smtp_srv_conf_t, auth_methods),
79 &ngx_mail_smtp_auth_methods },
85 static ngx_mail_module_t ngx_mail_smtp_module_ctx = {
86 &ngx_mail_smtp_protocol, /* protocol */
88 NULL, /* create main configuration */
89 NULL, /* init main configuration */
91 ngx_mail_smtp_create_srv_conf, /* create server configuration */
92 ngx_mail_smtp_merge_srv_conf /* merge server configuration */
96 ngx_module_t ngx_mail_smtp_module = {
98 &ngx_mail_smtp_module_ctx, /* module context */
99 ngx_mail_smtp_commands, /* module directives */
100 NGX_MAIL_MODULE, /* module type */
101 NULL, /* init master */
102 NULL, /* init module */
103 NULL, /* init process */
104 NULL, /* init thread */
105 NULL, /* exit thread */
106 NULL, /* exit process */
107 NULL, /* exit master */
108 NGX_MODULE_V1_PADDING
113 ngx_mail_smtp_create_srv_conf(ngx_conf_t *cf)
115 ngx_mail_smtp_srv_conf_t *sscf;
117 sscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_smtp_srv_conf_t));
122 sscf->client_buffer_size = NGX_CONF_UNSET_SIZE;
123 sscf->greeting_delay = NGX_CONF_UNSET_MSEC;
125 if (ngx_array_init(&sscf->capabilities, cf->pool, 4, sizeof(ngx_str_t))
136 ngx_mail_smtp_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
138 ngx_mail_smtp_srv_conf_t *prev = parent;
139 ngx_mail_smtp_srv_conf_t *conf = child;
141 u_char *p, *auth, *last;
144 ngx_uint_t i, m, auth_enabled;
145 ngx_mail_core_srv_conf_t *cscf;
147 ngx_conf_merge_size_value(conf->client_buffer_size,
148 prev->client_buffer_size,
149 (size_t) ngx_pagesize);
151 ngx_conf_merge_msec_value(conf->greeting_delay,
152 prev->greeting_delay, 0);
154 ngx_conf_merge_bitmask_value(conf->auth_methods,
156 (NGX_CONF_BITMASK_SET
157 |NGX_MAIL_AUTH_PLAIN_ENABLED
158 |NGX_MAIL_AUTH_LOGIN_ENABLED));
161 cscf = ngx_mail_conf_get_module_srv_conf(cf, ngx_mail_core_module);
163 size = sizeof("220 ESMTP ready" CRLF) - 1 + cscf->server_name.len;
165 p = ngx_pnalloc(cf->pool, size);
167 return NGX_CONF_ERROR;
170 conf->greeting.len = size;
171 conf->greeting.data = p;
173 *p++ = '2'; *p++ = '2'; *p++ = '0'; *p++ = ' ';
174 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len);
175 ngx_memcpy(p, " ESMTP ready" CRLF, sizeof(" ESMTP ready" CRLF) - 1);
178 size = sizeof("250 " CRLF) - 1 + cscf->server_name.len;
180 p = ngx_pnalloc(cf->pool, size);
182 return NGX_CONF_ERROR;
185 conf->server_name.len = size;
186 conf->server_name.data = p;
188 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' ';
189 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len);
193 if (conf->capabilities.nelts == 0) {
194 conf->capabilities = prev->capabilities;
197 size = sizeof("250-") - 1 + cscf->server_name.len + sizeof(CRLF) - 1;
199 c = conf->capabilities.elts;
200 for (i = 0; i < conf->capabilities.nelts; i++) {
201 size += sizeof("250 ") - 1 + c[i].len + sizeof(CRLF) - 1;
206 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
207 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
210 if (m & conf->auth_methods) {
211 size += 1 + ngx_mail_smtp_auth_methods_names[i].len;
217 size += sizeof("250 AUTH") - 1 + sizeof(CRLF) - 1;
220 p = ngx_pnalloc(cf->pool, size);
222 return NGX_CONF_ERROR;
225 conf->capability.len = size;
226 conf->capability.data = p;
230 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-';
231 p = ngx_cpymem(p, cscf->server_name.data, cscf->server_name.len);
232 *p++ = CR; *p++ = LF;
234 for (i = 0; i < conf->capabilities.nelts; i++) {
236 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = '-';
237 p = ngx_cpymem(p, c[i].data, c[i].len);
238 *p++ = CR; *p++ = LF;
246 *p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' ';
247 *p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H';
249 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
250 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
253 if (m & conf->auth_methods) {
255 p = ngx_cpymem(p, ngx_mail_smtp_auth_methods_names[i].data,
256 ngx_mail_smtp_auth_methods_names[i].len);
266 size += sizeof("250 STARTTLS" CRLF) - 1;
268 p = ngx_pnalloc(cf->pool, size);
270 return NGX_CONF_ERROR;
273 conf->starttls_capability.len = size;
274 conf->starttls_capability.data = p;
276 p = ngx_cpymem(p, conf->capability.data, conf->capability.len);
278 p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1);
281 p = conf->starttls_capability.data
282 + (last - conf->capability.data) + 3;
285 size = (auth - conf->capability.data)
286 + sizeof("250 STARTTLS" CRLF) - 1;
288 p = ngx_pnalloc(cf->pool, size);
290 return NGX_CONF_ERROR;
293 conf->starttls_only_capability.len = size;
294 conf->starttls_only_capability.data = p;
296 p = ngx_cpymem(p, conf->capability.data, auth - conf->capability.data);
298 ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1);
301 p = conf->starttls_only_capability.data
302 + (last - conf->capability.data) + 3;