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r1323 merge: 

SMTP STARTTLS
patch by Maxim Dounin
This commit is contained in:
Igor Sysoev 2007-09-22 18:35:18 +00:00
parent 8b655ab2dd
commit d8d4d64a75
4 changed files with 149 additions and 1 deletions
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10
src/mail/ngx_mail.h
View File

@ -92,6 +92,8 @@ typedef struct {
ngx_str_t imap_starttls_only_capability;
ngx_str_t smtp_capability;
ngx_str_t smtp_starttls_capability;
ngx_str_t smtp_starttls_only_capability;
ngx_str_t server_name;
ngx_str_t smtp_server_name;
@ -247,6 +249,12 @@ typedef struct {
#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
@ -285,6 +293,8 @@ typedef struct {
#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]
void ngx_mail_init_connection(ngx_connection_t *c);

40
src/mail/ngx_mail_core_module.c
View File

@ -278,7 +278,7 @@ ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_mail_core_srv_conf_t *prev = parent;
ngx_mail_core_srv_conf_t *conf = child;
u_char *p;
u_char *p, *auth;
size_t size, stls_only_size;
ngx_str_t *c, *d;
ngx_uint_t i, m;
@ -582,6 +582,8 @@ ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
*p++ = CR; *p++ = LF;
}
auth = p;
*p++ = '2'; *p++ = '5'; *p++ = '0'; *p++ = ' ';
*p++ = 'A'; *p++ = 'U'; *p++ = 'T'; *p++ = 'H';
@ -598,6 +600,42 @@ ngx_mail_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
*p++ = CR; *p = LF;
size += sizeof("250 STARTTLS" CRLF) - 1;
p = ngx_palloc(cf->pool, size);
if (p == NULL) {
return NGX_CONF_ERROR;
}
conf->smtp_starttls_capability.len = size;
conf->smtp_starttls_capability.data = p;
p = ngx_cpymem(p, conf->smtp_capability.data,
conf->smtp_capability.len);
p = ngx_cpymem(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1);
*p++ = CR; *p = LF;
p = conf->smtp_starttls_capability.data
+ (auth - conf->smtp_capability.data) + 3;
*p = '-';
size = (auth - conf->smtp_capability.data)
+ sizeof("250 STARTTLS" CRLF) - 1;
p = ngx_palloc(cf->pool, size);
if (p == NULL) {
return NGX_CONF_ERROR;
}
conf->smtp_starttls_only_capability.len = size;
conf->smtp_starttls_only_capability.data = p;
p = ngx_cpymem(p, conf->smtp_capability.data,
auth - conf->smtp_capability.data);
ngx_memcpy(p, "250 STARTTLS" CRLF, sizeof("250 STARTTLS" CRLF) - 1);
return NGX_CONF_OK;
}

67
src/mail/ngx_mail_handler.c
View File

@ -1229,6 +1229,9 @@ ngx_smtp_auth_state(ngx_event_t *rev)
ngx_connection_t *c;
ngx_mail_session_t *s;
ngx_mail_core_srv_conf_t *cscf;
#if (NGX_MAIL_SSL)
ngx_mail_ssl_conf_t *sslcf;
#endif
c = rev->data;
s = c->data;
@ -1295,6 +1298,26 @@ ngx_smtp_auth_state(ngx_event_t *rev)
} else {
s->esmtp = 1;
#if (NGX_MAIL_SSL)
if (c->ssl == NULL) {
sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module);
if (sslcf->starttls == NGX_MAIL_STARTTLS_ON) {
size = cscf->smtp_starttls_capability.len;
text = cscf->smtp_starttls_capability.data;
break;
}
if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) {
size = cscf->smtp_starttls_only_capability.len;
text = cscf->smtp_starttls_only_capability.data;
break;
}
}
#endif
size = cscf->smtp_capability.len;
text = cscf->smtp_capability.data;
}
@ -1303,6 +1326,18 @@ ngx_smtp_auth_state(ngx_event_t *rev)
case NGX_SMTP_AUTH:
#if (NGX_MAIL_SSL)
if (c->ssl == NULL) {
sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module);
if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) {
rc = NGX_MAIL_PARSE_INVALID_COMMAND;
break;
}
}
#endif
if (s->args.nelts == 0) {
text = smtp_invalid_argument;
size = sizeof(smtp_invalid_argument) - 1;
@ -1453,6 +1488,38 @@ ngx_smtp_auth_state(ngx_event_t *rev)
text = smtp_ok;
size = sizeof(smtp_ok) - 1;
break;
#if (NGX_MAIL_SSL)
case NGX_SMTP_STARTTLS:
if (c->ssl == NULL) {
sslcf = ngx_mail_get_module_srv_conf(s,
ngx_mail_ssl_module);
if (sslcf->starttls) {
c->read->handler = ngx_mail_starttls_handler;
/*
* RFC3207 requires us to discard any knowledge
* obtained from client before STARTTLS.
*/
s->smtp_helo.len = 0;
s->smtp_helo.data = NULL;
text = smtp_ok;
size = sizeof(smtp_ok) - 1;
break;
}
}
rc = NGX_MAIL_PARSE_INVALID_COMMAND;
break;
#endif
default:
rc = NGX_MAIL_PARSE_INVALID_COMMAND;
break;
}
break;

33
src/mail/ngx_mail_parse.c
View File

@ -646,10 +646,43 @@ ngx_int_t ngx_smtp_parse_command(ngx_mail_session_t *s)
{
s->command = NGX_SMTP_RSET;
} else if (c0 == 'R' && c1 == 'C' && c2 == 'P' && c3 == 'T')
{
s->command = NGX_SMTP_RCPT;
} else if (c0 == 'V' && c1 == 'R' && c2 == 'F' && c3 == 'Y')
{
s->command = NGX_SMTP_VRFY;
} else if (c0 == 'E' && c1 == 'X' && c2 == 'P' && c3 == 'N')
{
s->command = NGX_SMTP_EXPN;
} else if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'P')
{
s->command = NGX_SMTP_HELP;
} else {
goto invalid;
}
#if (NGX_MAIL_SSL)
} else if (p - c == 8) {
if ((c[0] == 'S'|| c[0] == 's')
&& (c[1] == 'T'|| c[1] == 't')
&& (c[2] == 'A'|| c[2] == 'a')
&& (c[3] == 'R'|| c[3] == 'r')
&& (c[4] == 'T'|| c[4] == 't')
&& (c[5] == 'T'|| c[5] == 't')
&& (c[6] == 'L'|| c[6] == 'l')
&& (c[7] == 'S'|| c[7] == 's'))
{
s->command = NGX_SMTP_STARTTLS;
} else {
goto invalid;
}
#endif
} else {
goto invalid;
}