Mercurial > hg > nginx
comparison src/mail/ngx_mail_handler.c @ 9236:d9a52ebb9b00
Mail: max_commands directive.
The directive specifies the maximum number of commands allowed during
authentication, after which the connection is closed. The default
limit is 1000, which is not expected to affect any well-behaving clients,
since authentication usually requires at most several commands, though
will effectively stop malicious clients from flooding the server with
with commands.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sat, 30 Mar 2024 05:05:53 +0300 |
| parents | 9ca12c957304 |
| children |
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| 9235:d7fd0acdea64 | 9236:d9a52ebb9b00 |
|---|---|
| 894 if (rc == NGX_ERROR) { | 894 if (rc == NGX_ERROR) { |
| 895 ngx_mail_close_connection(c); | 895 ngx_mail_close_connection(c); |
| 896 return NGX_ERROR; | 896 return NGX_ERROR; |
| 897 } | 897 } |
| 898 | 898 |
| 899 s->commands++; | |
| 900 | |
| 901 if (s->commands > cscf->max_commands) { | |
| 902 | |
| 903 ngx_log_error(NGX_LOG_INFO, c->log, 0, | |
| 904 "client sent too many commands"); | |
| 905 | |
| 906 s->quit = 1; | |
| 907 | |
| 908 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 909 } | |
| 910 | |
| 899 return NGX_OK; | 911 return NGX_OK; |
| 900 } | 912 } |
| 901 | 913 |
| 902 | 914 |
| 903 void | 915 void |