diff options
author | Ben Magistro <koncept1@gmail.com> | 2022-04-17 09:45:02 -0400 |
---|---|---|
committer | Ben Magistro <koncept1@gmail.com> | 2022-04-20 21:30:13 -0400 |
commit | bf8c01bfcd015d43cfbcb893e48c6a83a95c91ec (patch) | |
tree | d4871f553a40aaed8cf98165f1e4f07584cfb95e /app/nginx/src/mail/ngx_mail_pop3_handler.c | |
parent | 862937c477a3d90798a5e4c4e84fc7c79aae52fe (diff) |
Drop nginxdev-mitm-proxy
Nginx is not part of the core library being developed and needs to
be moved to its own repository to allow it to be more easily
maintained.
Signed-off-by: Ben Magistro <koncept1@gmail.com>
Change-Id: I5639e84ba0564ccd49ffcffa7ec9fcd57827bd6d
Diffstat (limited to 'app/nginx/src/mail/ngx_mail_pop3_handler.c')
-rw-r--r-- | app/nginx/src/mail/ngx_mail_pop3_handler.c | 515 |
1 files changed, 0 insertions, 515 deletions
diff --git a/app/nginx/src/mail/ngx_mail_pop3_handler.c b/app/nginx/src/mail/ngx_mail_pop3_handler.c deleted file mode 100644 index 9310c27..0000000 --- a/app/nginx/src/mail/ngx_mail_pop3_handler.c +++ /dev/null @@ -1,515 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_event.h> -#include <ngx_mail.h> -#include <ngx_mail_pop3_module.h> - - -static ngx_int_t ngx_mail_pop3_user(ngx_mail_session_t *s, ngx_connection_t *c); -static ngx_int_t ngx_mail_pop3_pass(ngx_mail_session_t *s, ngx_connection_t *c); -static ngx_int_t ngx_mail_pop3_capa(ngx_mail_session_t *s, ngx_connection_t *c, - ngx_int_t stls); -static ngx_int_t ngx_mail_pop3_stls(ngx_mail_session_t *s, ngx_connection_t *c); -static ngx_int_t ngx_mail_pop3_apop(ngx_mail_session_t *s, ngx_connection_t *c); -static ngx_int_t ngx_mail_pop3_auth(ngx_mail_session_t *s, ngx_connection_t *c); - - -static u_char pop3_greeting[] = "+OK POP3 ready" CRLF; -static u_char pop3_ok[] = "+OK" CRLF; -static u_char pop3_next[] = "+ " CRLF; -static u_char pop3_username[] = "+ VXNlcm5hbWU6" CRLF; -static u_char pop3_password[] = "+ UGFzc3dvcmQ6" CRLF; -static u_char pop3_invalid_command[] = "-ERR invalid command" CRLF; - - -void -ngx_mail_pop3_init_session(ngx_mail_session_t *s, ngx_connection_t *c) -{ - u_char *p; - ngx_mail_core_srv_conf_t *cscf; - ngx_mail_pop3_srv_conf_t *pscf; - - pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); - cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); - - if (pscf->auth_methods - & (NGX_MAIL_AUTH_APOP_ENABLED|NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) - { - if (ngx_mail_salt(s, c, cscf) != NGX_OK) { - ngx_mail_session_internal_server_error(s); - return; - } - - s->out.data = ngx_pnalloc(c->pool, sizeof(pop3_greeting) + s->salt.len); - if (s->out.data == NULL) { - ngx_mail_session_internal_server_error(s); - return; - } - - p = ngx_cpymem(s->out.data, pop3_greeting, sizeof(pop3_greeting) - 3); - *p++ = ' '; - p = ngx_cpymem(p, s->salt.data, s->salt.len); - - s->out.len = p - s->out.data; - - } else { - ngx_str_set(&s->out, pop3_greeting); - } - - c->read->handler = ngx_mail_pop3_init_protocol; - - ngx_add_timer(c->read, cscf->timeout); - - if (ngx_handle_read_event(c->read, 0) != NGX_OK) { - ngx_mail_close_connection(c); - } - - ngx_mail_send(c->write); -} - - -void -ngx_mail_pop3_init_protocol(ngx_event_t *rev) -{ - ngx_connection_t *c; - ngx_mail_session_t *s; - - c = rev->data; - - c->log->action = "in auth state"; - - if (rev->timedout) { - ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); - c->timedout = 1; - ngx_mail_close_connection(c); - return; - } - - s = c->data; - - if (s->buffer == NULL) { - if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t)) - == NGX_ERROR) - { - ngx_mail_session_internal_server_error(s); - return; - } - - s->buffer = ngx_create_temp_buf(c->pool, 128); - if (s->buffer == NULL) { - ngx_mail_session_internal_server_error(s); - return; - } - } - - s->mail_state = ngx_pop3_start; - c->read->handler = ngx_mail_pop3_auth_state; - - ngx_mail_pop3_auth_state(rev); -} - - -void -ngx_mail_pop3_auth_state(ngx_event_t *rev) -{ - ngx_int_t rc; - ngx_connection_t *c; - ngx_mail_session_t *s; - - c = rev->data; - s = c->data; - - ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 auth state"); - - if (rev->timedout) { - ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); - c->timedout = 1; - ngx_mail_close_connection(c); - return; - } - - if (s->out.len) { - ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "pop3 send handler busy"); - s->blocked = 1; - return; - } - - s->blocked = 0; - - rc = ngx_mail_read_command(s, c); - - if (rc == NGX_AGAIN || rc == NGX_ERROR) { - return; - } - - ngx_str_set(&s->out, pop3_ok); - - if (rc == NGX_OK) { - switch (s->mail_state) { - - case ngx_pop3_start: - - switch (s->command) { - - case NGX_POP3_USER: - rc = ngx_mail_pop3_user(s, c); - break; - - case NGX_POP3_CAPA: - rc = ngx_mail_pop3_capa(s, c, 1); - break; - - case NGX_POP3_APOP: - rc = ngx_mail_pop3_apop(s, c); - break; - - case NGX_POP3_AUTH: - rc = ngx_mail_pop3_auth(s, c); - break; - - case NGX_POP3_QUIT: - s->quit = 1; - break; - - case NGX_POP3_NOOP: - break; - - case NGX_POP3_STLS: - rc = ngx_mail_pop3_stls(s, c); - break; - - default: - rc = NGX_MAIL_PARSE_INVALID_COMMAND; - break; - } - - break; - - case ngx_pop3_user: - - switch (s->command) { - - case NGX_POP3_PASS: - rc = ngx_mail_pop3_pass(s, c); - break; - - case NGX_POP3_CAPA: - rc = ngx_mail_pop3_capa(s, c, 0); - break; - - case NGX_POP3_QUIT: - s->quit = 1; - break; - - case NGX_POP3_NOOP: - break; - - default: - rc = NGX_MAIL_PARSE_INVALID_COMMAND; - break; - } - - break; - - /* suppress warnings */ - case ngx_pop3_passwd: - break; - - case ngx_pop3_auth_login_username: - rc = ngx_mail_auth_login_username(s, c, 0); - - ngx_str_set(&s->out, pop3_password); - s->mail_state = ngx_pop3_auth_login_password; - break; - - case ngx_pop3_auth_login_password: - rc = ngx_mail_auth_login_password(s, c); - break; - - case ngx_pop3_auth_plain: - rc = ngx_mail_auth_plain(s, c, 0); - break; - - case ngx_pop3_auth_cram_md5: - rc = ngx_mail_auth_cram_md5(s, c); - break; - - case ngx_pop3_auth_external: - rc = ngx_mail_auth_external(s, c, 0); - break; - } - } - - switch (rc) { - - case NGX_DONE: - ngx_mail_auth(s, c); - return; - - case NGX_ERROR: - ngx_mail_session_internal_server_error(s); - return; - - case NGX_MAIL_PARSE_INVALID_COMMAND: - s->mail_state = ngx_pop3_start; - s->state = 0; - - ngx_str_set(&s->out, pop3_invalid_command); - - /* fall through */ - - case NGX_OK: - - s->args.nelts = 0; - s->buffer->pos = s->buffer->start; - s->buffer->last = s->buffer->start; - - if (s->state) { - s->arg_start = s->buffer->start; - } - - ngx_mail_send(c->write); - } -} - -static ngx_int_t -ngx_mail_pop3_user(ngx_mail_session_t *s, ngx_connection_t *c) -{ - ngx_str_t *arg; - -#if (NGX_MAIL_SSL) - if (ngx_mail_starttls_only(s, c)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } -#endif - - if (s->args.nelts != 1) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - arg = s->args.elts; - s->login.len = arg[0].len; - s->login.data = ngx_pnalloc(c->pool, s->login.len); - if (s->login.data == NULL) { - return NGX_ERROR; - } - - ngx_memcpy(s->login.data, arg[0].data, s->login.len); - - ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, - "pop3 login: \"%V\"", &s->login); - - s->mail_state = ngx_pop3_user; - - return NGX_OK; -} - - -static ngx_int_t -ngx_mail_pop3_pass(ngx_mail_session_t *s, ngx_connection_t *c) -{ - ngx_str_t *arg; - - if (s->args.nelts != 1) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - arg = s->args.elts; - s->passwd.len = arg[0].len; - s->passwd.data = ngx_pnalloc(c->pool, s->passwd.len); - if (s->passwd.data == NULL) { - return NGX_ERROR; - } - - ngx_memcpy(s->passwd.data, arg[0].data, s->passwd.len); - -#if (NGX_DEBUG_MAIL_PASSWD) - ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, - "pop3 passwd: \"%V\"", &s->passwd); -#endif - - return NGX_DONE; -} - - -static ngx_int_t -ngx_mail_pop3_capa(ngx_mail_session_t *s, ngx_connection_t *c, ngx_int_t stls) -{ - ngx_mail_pop3_srv_conf_t *pscf; - - pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); - -#if (NGX_MAIL_SSL) - - if (stls && c->ssl == NULL) { - ngx_mail_ssl_conf_t *sslcf; - - sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); - - if (sslcf->starttls == NGX_MAIL_STARTTLS_ON) { - s->out = pscf->starttls_capability; - return NGX_OK; - } - - if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) { - s->out = pscf->starttls_only_capability; - return NGX_OK; - } - } - -#endif - - s->out = pscf->capability; - return NGX_OK; -} - - -static ngx_int_t -ngx_mail_pop3_stls(ngx_mail_session_t *s, ngx_connection_t *c) -{ -#if (NGX_MAIL_SSL) - ngx_mail_ssl_conf_t *sslcf; - - 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; - return NGX_OK; - } - } - -#endif - - return NGX_MAIL_PARSE_INVALID_COMMAND; -} - - -static ngx_int_t -ngx_mail_pop3_apop(ngx_mail_session_t *s, ngx_connection_t *c) -{ - ngx_str_t *arg; - ngx_mail_pop3_srv_conf_t *pscf; - -#if (NGX_MAIL_SSL) - if (ngx_mail_starttls_only(s, c)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } -#endif - - if (s->args.nelts != 2) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); - - if (!(pscf->auth_methods & NGX_MAIL_AUTH_APOP_ENABLED)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - arg = s->args.elts; - - s->login.len = arg[0].len; - s->login.data = ngx_pnalloc(c->pool, s->login.len); - if (s->login.data == NULL) { - return NGX_ERROR; - } - - ngx_memcpy(s->login.data, arg[0].data, s->login.len); - - s->passwd.len = arg[1].len; - s->passwd.data = ngx_pnalloc(c->pool, s->passwd.len); - if (s->passwd.data == NULL) { - return NGX_ERROR; - } - - ngx_memcpy(s->passwd.data, arg[1].data, s->passwd.len); - - ngx_log_debug2(NGX_LOG_DEBUG_MAIL, c->log, 0, - "pop3 apop: \"%V\" \"%V\"", &s->login, &s->passwd); - - s->auth_method = NGX_MAIL_AUTH_APOP; - - return NGX_DONE; -} - - -static ngx_int_t -ngx_mail_pop3_auth(ngx_mail_session_t *s, ngx_connection_t *c) -{ - ngx_int_t rc; - ngx_mail_pop3_srv_conf_t *pscf; - -#if (NGX_MAIL_SSL) - if (ngx_mail_starttls_only(s, c)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } -#endif - - pscf = ngx_mail_get_module_srv_conf(s, ngx_mail_pop3_module); - - if (s->args.nelts == 0) { - s->out = pscf->auth_capability; - s->state = 0; - - return NGX_OK; - } - - rc = ngx_mail_auth_parse(s, c); - - switch (rc) { - - case NGX_MAIL_AUTH_LOGIN: - - ngx_str_set(&s->out, pop3_username); - s->mail_state = ngx_pop3_auth_login_username; - - return NGX_OK; - - case NGX_MAIL_AUTH_LOGIN_USERNAME: - - ngx_str_set(&s->out, pop3_password); - s->mail_state = ngx_pop3_auth_login_password; - - return ngx_mail_auth_login_username(s, c, 1); - - case NGX_MAIL_AUTH_PLAIN: - - ngx_str_set(&s->out, pop3_next); - s->mail_state = ngx_pop3_auth_plain; - - return NGX_OK; - - case NGX_MAIL_AUTH_CRAM_MD5: - - if (!(pscf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - if (ngx_mail_auth_cram_md5_salt(s, c, "+ ", 2) == NGX_OK) { - s->mail_state = ngx_pop3_auth_cram_md5; - return NGX_OK; - } - - return NGX_ERROR; - - case NGX_MAIL_AUTH_EXTERNAL: - - if (!(pscf->auth_methods & NGX_MAIL_AUTH_EXTERNAL_ENABLED)) { - return NGX_MAIL_PARSE_INVALID_COMMAND; - } - - ngx_str_set(&s->out, pop3_username); - s->mail_state = ngx_pop3_auth_external; - - return NGX_OK; - } - - return rc; -} |