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Mail: extensible auth methods in pop3 module.

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This commit is contained in:
Maxim Dounin 2016-10-18 19:38:46 +03:00
parent 948a18ed54
commit a747089a1d
1 changed files with 66 additions and 28 deletions
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94
src/mail/ngx_mail_pop3_module.c
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@ -33,19 +33,13 @@ static ngx_conf_bitmask_t ngx_mail_pop3_auth_methods[] = {
};
static ngx_str_t ngx_mail_pop3_auth_plain_capability =
ngx_string("+OK methods supported:" CRLF
"LOGIN" CRLF
"PLAIN" CRLF
"." CRLF);
static ngx_str_t ngx_mail_pop3_auth_cram_md5_capability =
ngx_string("+OK methods supported:" CRLF
"LOGIN" CRLF
"PLAIN" CRLF
"CRAM-MD5" CRLF
"." CRLF);
static ngx_str_t ngx_mail_pop3_auth_methods_names[] = {
ngx_string("PLAIN"),
ngx_string("LOGIN"),
ngx_null_string, /* APOP */
ngx_string("CRAM-MD5"),
ngx_null_string /* NONE */
};
static ngx_mail_protocol_t ngx_mail_pop3_protocol = {
@ -140,13 +134,17 @@ ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
u_char *p;
size_t size, stls_only_size;
ngx_str_t *c, *d;
ngx_uint_t i;
ngx_uint_t i, m;
ngx_conf_merge_bitmask_value(conf->auth_methods,
prev->auth_methods,
(NGX_CONF_BITMASK_SET
|NGX_MAIL_AUTH_PLAIN_ENABLED));
if (conf->auth_methods & NGX_MAIL_AUTH_PLAIN_ENABLED) {
conf->auth_methods |= NGX_MAIL_AUTH_LOGIN_ENABLED;
}
if (conf->capabilities.nelts == 0) {
conf->capabilities = prev->capabilities;
}
@ -179,11 +177,15 @@ ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
stls_only_size += c[i].len + sizeof(CRLF) - 1;
}
if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) {
size += sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1;
size += sizeof("SASL") - 1 + sizeof(CRLF) - 1;
} else {
size += sizeof("SASL LOGIN PLAIN" CRLF) - 1;
for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
m <<= 1, i++)
{
if (m & conf->auth_methods) {
size += 1 + ngx_mail_pop3_auth_methods_names[i].len;
}
}
p = ngx_pnalloc(cf->pool, size);
@ -202,14 +204,20 @@ ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
*p++ = CR; *p++ = LF;
}
if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) {
p = ngx_cpymem(p, "SASL LOGIN PLAIN CRAM-MD5" CRLF,
sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1);
p = ngx_cpymem(p, "SASL", sizeof("SASL") - 1);
} else {
p = ngx_cpymem(p, "SASL LOGIN PLAIN" CRLF,
sizeof("SASL LOGIN PLAIN" CRLF) - 1);
for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
m <<= 1, i++)
{
if (m & conf->auth_methods) {
*p++ = ' ';
p = ngx_cpymem(p, ngx_mail_pop3_auth_methods_names[i].data,
ngx_mail_pop3_auth_methods_names[i].len);
}
}
*p++ = CR; *p++ = LF;
*p++ = '.'; *p++ = CR; *p = LF;
@ -231,12 +239,42 @@ ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
*p++ = '.'; *p++ = CR; *p = LF;
if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) {
conf->auth_capability = ngx_mail_pop3_auth_cram_md5_capability;
size = sizeof("+OK methods supported:" CRLF) - 1
+ sizeof("." CRLF) - 1;
} else {
conf->auth_capability = ngx_mail_pop3_auth_plain_capability;
for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
m <<= 1, i++)
{
if (m & conf->auth_methods) {
size += ngx_mail_pop3_auth_methods_names[i].len
+ sizeof(CRLF) - 1;
}
}
p = ngx_pnalloc(cf->pool, size);
if (p == NULL) {
return NGX_CONF_ERROR;
}
conf->auth_capability.data = p;
conf->auth_capability.len = size;
p = ngx_cpymem(p, "+OK methods supported:" CRLF,
sizeof("+OK methods supported:" CRLF) - 1);
for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0;
m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED;
m <<= 1, i++)
{
if (m & conf->auth_methods) {
p = ngx_cpymem(p, ngx_mail_pop3_auth_methods_names[i].data,
ngx_mail_pop3_auth_methods_names[i].len);
*p++ = CR; *p++ = LF;
}
}
*p++ = '.'; *p++ = CR; *p = LF;
p = ngx_pnalloc(cf->pool, stls_only_size);