mirror of
https://github.com/nginx/nginx.git
synced 2024-12-17 23:27:49 +08:00
7b190b41b0
*) Feature: the "working_directory" directive.
*) Feature: the "port_in_redirect" directive.
*) Bugfix: the segmentation fault was occurred if the backend response
header was in several packets; the bug had appeared in 0.1.29.
*) Bugfix: if more than 10 servers were configured or some server did
not use the "listen" directive, then the segmentation fault was
occurred on the start.
*) Bugfix: the segmentation fault might occur if the response was
bigger than the temporary file.
*) Bugfix: nginx returned the 400 response on requests like
"GET http://www.domain.com/uri HTTP/1.0"; the bug had appeared in
0.1.28.
358 lines
8.0 KiB
C
358 lines
8.0 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_event.h>
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#include <ngx_imap.h>
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#include <nginx.h>
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static void ngx_imap_init_session(ngx_event_t *rev);
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static void ngx_pop3_auth_state(ngx_event_t *rev);
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static ngx_int_t ngx_pop3_read_command(ngx_imap_session_t *s);
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static void ngx_imap_auth_state(ngx_event_t *rev);
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static ngx_str_t greetings[] = {
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ngx_string("+OK " NGINX_VER " ready" CRLF),
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ngx_string("* OK " NGINX_VER " ready" CRLF)
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};
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static u_char pop3_ok[] = "+OK" CRLF;
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static u_char pop3_invalid_command[] = "-ERR invalid command" CRLF;
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void
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ngx_imap_init_connection(ngx_connection_t *c)
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{
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ssize_t size;
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ngx_imap_conf_ctx_t *ctx;
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ngx_imap_core_srv_conf_t *cscf;
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ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "imap init connection");
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c->log_error = NGX_ERROR_INFO;
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ctx = c->ctx;
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cscf = ngx_imap_get_module_srv_conf(ctx, ngx_imap_core_module);
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size = greetings[cscf->protocol].len;
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if (ngx_send(c, greetings[cscf->protocol].data, size) < size) {
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/*
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* we treat the incomplete sending as NGX_ERROR
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* because it is very strange here
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*/
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ngx_imap_close_connection(c);
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return;
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}
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c->read->handler = ngx_imap_init_session;
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ngx_add_timer(c->read, cscf->timeout);
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if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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ngx_imap_close_connection(c);
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}
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}
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static void
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ngx_imap_init_session(ngx_event_t *rev)
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{
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size_t size;
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ngx_connection_t *c;
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ngx_imap_session_t *s;
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ngx_imap_conf_ctx_t *ctx;
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ngx_imap_core_srv_conf_t *cscf;
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c = rev->data;
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if (rev->timedout) {
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ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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ngx_imap_close_connection(c);
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return;
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}
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s = ngx_pcalloc(c->pool, sizeof(ngx_imap_session_t));
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if (s == NULL) {
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ngx_imap_close_connection(c);
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return;
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}
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c->data = s;
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s->connection = c;
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s->ctx = ngx_pcalloc(c->pool, sizeof(void *) * ngx_imap_max_module);
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if (s->ctx == NULL) {
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ngx_imap_close_connection(c);
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return;
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}
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ctx = c->ctx;
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s->main_conf = ctx->main_conf;
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s->srv_conf = ctx->srv_conf;
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if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t)) == NGX_ERROR) {
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ngx_imap_close_connection(c);
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return;
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}
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cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
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s->protocol = cscf->protocol;
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if (cscf->protocol == NGX_IMAP_POP3_PROTOCOL) {
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size = 128;
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c->read->handler = ngx_pop3_auth_state;
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} else {
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size = cscf->imap_client_buffer_size;
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c->read->handler = ngx_imap_auth_state;
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}
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s->buffer = ngx_create_temp_buf(c->pool, size);
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if (s->buffer == NULL) {
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ngx_imap_close_connection(c);
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return;
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}
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c->read->handler(rev);
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}
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static void
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ngx_imap_auth_state(ngx_event_t *rev)
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{
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ngx_connection_t *c;
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c = rev->data;
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ngx_imap_close_connection(c);
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}
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static void
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ngx_pop3_auth_state(ngx_event_t *rev)
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{
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u_char *text;
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ssize_t size;
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ngx_int_t rc;
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ngx_uint_t quit;
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ngx_str_t *arg;
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ngx_connection_t *c;
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ngx_imap_session_t *s;
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c = rev->data;
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s = c->data;
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ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0, "pop3 auth state");
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if (rev->timedout) {
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ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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ngx_imap_close_connection(c);
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return;
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}
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rc = ngx_pop3_read_command(s);
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if (rc == NGX_AGAIN || rc == NGX_ERROR) {
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return;
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}
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quit = 0;
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text = pop3_ok;
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size = sizeof(pop3_ok) - 1;
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if (rc == NGX_OK) {
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switch (s->imap_state) {
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case ngx_pop3_start:
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switch (s->command) {
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case NGX_POP3_USER:
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if (s->args.nelts == 1) {
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s->imap_state = ngx_pop3_user;
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arg = s->args.elts;
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s->login.len = arg[0].len;
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s->login.data = ngx_palloc(c->pool, s->login.len + 1);
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if (s->login.data == NULL) {
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ngx_imap_close_connection(c);
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return;
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}
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ngx_cpystrn(s->login.data, arg[0].data, s->login.len + 1);
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ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
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"pop3 login: \"%s\"", s->login.data);
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} else {
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rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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}
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break;
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case NGX_POP3_QUIT:
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quit = 1;
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break;
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default:
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s->imap_state = ngx_pop3_start;
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rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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break;
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}
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break;
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case ngx_pop3_user:
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switch (s->command) {
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case NGX_POP3_PASS:
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if (s->args.nelts == 1) {
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/* STUB */ s->imap_state = ngx_pop3_start;
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arg = s->args.elts;
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s->passwd.len = arg[0].len;
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s->passwd.data = ngx_palloc(c->pool, s->passwd.len + 1);
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if (s->passwd.data == NULL) {
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ngx_imap_close_connection(c);
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return;
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}
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ngx_cpystrn(s->passwd.data, arg[0].data, s->passwd.len + 1);
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ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
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"pop3 passwd: \"%s\"", s->passwd.data);
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s->buffer->pos = s->buffer->start;
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s->buffer->last = s->buffer->start;
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ngx_imap_auth_http_init(s);
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return;
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} else {
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rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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}
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break;
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case NGX_POP3_QUIT:
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quit = 1;
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break;
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default:
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s->imap_state = ngx_pop3_start;
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rc = NGX_IMAP_PARSE_INVALID_COMMAND;
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break;
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}
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break;
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}
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}
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if (rc == NGX_IMAP_PARSE_INVALID_COMMAND) {
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text = pop3_invalid_command;
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size = sizeof(pop3_invalid_command) - 1;
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}
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if (ngx_send(c, text, size) < size) {
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/*
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* we treat the incomplete sending as NGX_ERROR
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* because it is very strange here
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*/
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ngx_imap_close_connection(c);
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return;
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}
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if (quit) {
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ngx_imap_close_connection(c);
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return;
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}
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s->args.nelts = 0;
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s->buffer->pos = s->buffer->start;
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s->buffer->last = s->buffer->start;
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}
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static ngx_int_t
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ngx_pop3_read_command(ngx_imap_session_t *s)
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{
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ssize_t n;
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ngx_int_t rc;
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n = ngx_recv(s->connection, s->buffer->last,
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s->buffer->end - s->buffer->last);
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if (n == NGX_ERROR || n == 0) {
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ngx_imap_close_connection(s->connection);
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return NGX_ERROR;
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}
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if (n > 0) {
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s->buffer->last += n;
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}
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if (n == NGX_AGAIN) {
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if (ngx_handle_read_event(s->connection->read, 0) == NGX_ERROR) {
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ngx_imap_close_connection(s->connection);
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return NGX_ERROR;
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}
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return NGX_AGAIN;
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}
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rc = ngx_pop3_parse_command(s);
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if (rc == NGX_AGAIN || rc == NGX_IMAP_PARSE_INVALID_COMMAND) {
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return rc;
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}
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if (rc == NGX_ERROR) {
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ngx_imap_close_connection(s->connection);
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return NGX_ERROR;
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}
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return NGX_OK;
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}
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#if 0
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void
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ngx_imap_close_session(ngx_imap_session_t *s)
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{
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ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
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"close imap session");
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ngx_imap_close_connection(s->connection);
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}
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#endif
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void
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ngx_imap_close_connection(ngx_connection_t *c)
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{
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ngx_pool_t *pool;
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ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
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"close imap connection: %d", c->fd);
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pool = c->pool;
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ngx_close_connection(c);
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ngx_destroy_pool(pool);
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}
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