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xmpp.patch
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Description: xmmp patch backported from nginx-xmpp (https://github.com/robn/nginx-xmpp)
Author: hda_launchpad (hda_launchpad) <admin@hda.me>
--- nginx-1.10.1-10.orig/src/mail/ngx_mail.h
+++ nginx-1.10.1-10/src/mail/ngx_mail.h
@@ -114,6 +114,7 @@ typedef struct {
#define NGX_MAIL_POP3_PROTOCOL 0
#define NGX_MAIL_IMAP_PROTOCOL 1
#define NGX_MAIL_SMTP_PROTOCOL 2
+#define NGX_MAIL_XMPP_PROTOCOL 3
typedef struct ngx_mail_protocol_s ngx_mail_protocol_t;
@@ -178,6 +179,15 @@ typedef enum {
} ngx_smtp_state_e;
+typedef enum {
+ ngx_xmpp_start = 0,
+ ngx_xmpp_stream,
+ ngx_xmpp_auth_login_username,
+ ngx_xmpp_auth_login_password,
+ ngx_xmpp_auth_plain,
+} ngx_xmpp_state_e;
+
+
typedef struct {
ngx_peer_connection_t upstream;
ngx_buf_t *buffer;
@@ -293,6 +303,11 @@ typedef struct {
#define NGX_SMTP_STARTTLS 13
+#define NGX_XMPP_STREAM 1
+#define NGX_XMPP_STARTTLS 2
+#define NGX_XMPP_AUTH 3
+
+
#define NGX_MAIL_AUTH_PLAIN 0
#define NGX_MAIL_AUTH_LOGIN 1
#define NGX_MAIL_AUTH_LOGIN_USERNAME 2
--- nginx-1.10.1-10.orig/src/mail/ngx_mail_auth_http_module.c
+++ nginx-1.10.1-10/src/mail/ngx_mail_auth_http_module.c
@@ -458,6 +458,14 @@ done:
}
+static u_char xmpp_auth_failure_start[] =
+ "<failure xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">"
+ "<not-authorized/>"
+ "<text>";
+static u_char xmpp_auth_failure_end[] =
+ "</text>"
+ "</failure>";
+
static void
ngx_mail_auth_http_process_headers(ngx_mail_session_t *s,
ngx_mail_auth_http_ctx_t *ctx)
@@ -536,6 +544,11 @@ ngx_mail_auth_http_process_headers(ngx_m
+ sizeof(CRLF) - 1;
break;
+ case NGX_MAIL_XMPP_PROTOCOL:
+ size = sizeof(xmpp_auth_failure_start) - 1 + len
+ + sizeof(xmpp_auth_failure_end) - 1;
+ break;
+
default: /* NGX_MAIL_SMTP_PROTOCOL */
ctx->err = ctx->errmsg;
continue;
@@ -562,12 +575,25 @@ ngx_mail_auth_http_process_headers(ngx_m
*p++ = 'N'; *p++ = 'O'; *p++ = ' ';
break;
+ case NGX_MAIL_XMPP_PROTOCOL:
+ p = ngx_cpymem(p, xmpp_auth_failure_start, sizeof(xmpp_auth_failure_start) - 1);
+ break;
+
default: /* NGX_MAIL_SMTP_PROTOCOL */
break;
}
p = ngx_cpymem(p, ctx->header_start, len);
- *p++ = CR; *p++ = LF;
+
+ switch (s->protocol) {
+ case NGX_MAIL_XMPP_PROTOCOL:
+ p = ngx_cpymem(p, xmpp_auth_failure_end, sizeof(xmpp_auth_failure_end) - 1);
+ break;
+
+ default:
+ *p++ = CR; *p++ = LF;
+ break;
+ }
ctx->err.len = p - ctx->err.data;
--- nginx-1.10.1-10.orig/src/mail/ngx_mail_parse.c
+++ nginx-1.10.1-10/src/mail/ngx_mail_parse.c
@@ -12,6 +12,7 @@
#include <ngx_mail_pop3_module.h>
#include <ngx_mail_imap_module.h>
#include <ngx_mail_smtp_module.h>
+#include <ngx_mail_xmpp_module.h>
ngx_int_t
@@ -855,6 +856,275 @@ invalid:
return NGX_MAIL_PARSE_INVALID_COMMAND;
}
+
+
+ngx_int_t
+ngx_mail_xmpp_parse_command(ngx_mail_session_t *s)
+{
+ u_char ch, *p, *c;
+ ngx_str_t *arg;
+ enum {
+ sw_start = 0,
+ sw_elem_start,
+ sw_elem,
+ sw_whitspace_between_attrs,
+ sw_attr_name,
+ sw_attr_value_quote_start,
+ sw_attr_value,
+ sw_cdata_start,
+ sw_cdata
+ } state;
+
+ state = s->state;
+
+ for (p = s->buffer->pos; p < s->buffer->last; p++) {
+ ch = *p;
+
+ switch (state) {
+
+ case sw_start:
+ switch (ch) {
+ case '<':
+ state = sw_elem_start;
+ break;
+ }
+ break;
+
+ case sw_elem_start:
+ s->literal_len = 0;
+
+ switch (ch) {
+ case ' ': case CR: case LF:
+ break;
+ default:
+ s->cmd_start = p;
+ state = sw_elem;
+ break;
+ }
+ break;
+
+ case sw_elem:
+ if (ch == ':') {
+ state = sw_elem_start;
+ break;
+ }
+
+ if (ch == ' ' || ch == CR || ch == LF || ch == '>') {
+
+ c = s->cmd_start;
+
+ s->command = 0;
+
+ switch (p - c) {
+ case 6:
+ if (c[0] == 's'
+ && c[1] == 't'
+ && c[2] == 'r'
+ && c[3] == 'e'
+ && c[4] == 'a'
+ && c[5] == 'm')
+ {
+ s->command = NGX_XMPP_STREAM;
+ }
+ break;
+
+ case 8:
+#if (NGX_MAIL_SSL)
+ if (c[0] == 's'
+ && c[1] == 't'
+ && c[2] == 'a'
+ && c[3] == 'r'
+ && c[4] == 't'
+ && c[5] == 't'
+ && c[6] == 'l'
+ && c[7] == 's')
+ {
+ s->command = NGX_XMPP_STARTTLS;
+ }
+#endif
+
+ if (c[0] == 'r'
+ && c[1] == 'e'
+ && c[2] == 's'
+ && c[3] == 'p'
+ && c[4] == 'o'
+ && c[5] == 'n'
+ && c[6] == 's'
+ && c[7] == 'e')
+ {
+ s->command = NGX_XMPP_AUTH;
+ }
+
+ break;
+
+ case 4:
+ if (c[0] == 'a'
+ && c[1] == 'u'
+ && c[2] == 't'
+ && c[3] == 'h')
+ {
+ s->command = NGX_XMPP_AUTH;
+ }
+ break;
+
+ }
+
+ switch (ch) {
+ case ' ': case CR: case LF:
+ state = sw_whitspace_between_attrs;
+ break;
+ case '>':
+ if (s->command == NGX_XMPP_AUTH && !s->literal_len) {
+ state = sw_cdata_start;
+ break;
+ }
+ state = sw_start;
+ if (s->command) {
+ goto done;
+ }
+ break;
+ }
+ }
+
+ break;
+
+ case sw_whitspace_between_attrs:
+ switch (ch) {
+ case ' ': case CR: case LF:
+ break;
+ case '/': case '?':
+ s->literal_len = 1; // reusing as self-close flag
+ break;
+ case '>':
+ if (s->command == NGX_XMPP_AUTH && !s->literal_len) {
+ state = sw_cdata_start;
+ break;
+ }
+ state = sw_start;
+ if (s->command) {
+ goto done;
+ }
+ break;
+ default:
+ s->arg_start = p;
+ state = sw_attr_name;
+ break;
+ }
+ break;
+
+ case sw_attr_name:
+ if (ch == '=') {
+ s->arg_end = p;
+ state = sw_attr_value_quote_start;
+ }
+ break;
+
+ case sw_attr_value_quote_start:
+ switch (ch) {
+ case '"': case '\'':
+ s->cmd_start = p; // reusing to remember quote type
+ state = sw_attr_value;
+ break;
+ default:
+ goto invalid;
+ }
+ break;
+
+ case sw_attr_value:
+ if (ch != s->cmd_start[0])
+ break;
+
+ c = s->arg_start;
+ if (s->command == NGX_XMPP_STREAM) {
+ if (s->arg_end - c == 2
+ && c[0] == 't' && c[1] == 'o') {
+
+ arg = ngx_array_push(&s->args);
+ if (arg == NULL) {
+ return NGX_ERROR;
+ }
+ arg->len = p - s->arg_end - 2;
+ arg->data = s->arg_end + 2;
+ }
+ }
+ else if (s->command == NGX_XMPP_AUTH) {
+ if (s->arg_end - c == 9
+ && c[0] == 'm'
+ && c[1] == 'e'
+ && c[2] == 'c'
+ && c[3] == 'h'
+ && c[4] == 'a'
+ && c[5] == 'n'
+ && c[6] == 'i'
+ && c[7] == 's'
+ && c[8] == 'm') {
+
+ arg = ngx_array_push(&s->args);
+ if (arg == NULL) {
+ return NGX_ERROR;
+ }
+ arg->len = p - s->arg_end - 2;
+ arg->data = s->arg_end + 2;
+ }
+ }
+
+ state = sw_whitspace_between_attrs;
+ break;
+
+ case sw_cdata_start:
+ switch (ch) {
+ case '<':
+ state = sw_start;
+ goto done;
+ default:
+ s->arg_start = p;
+ state = sw_cdata;
+ break;
+ }
+ break;
+
+ case sw_cdata:
+ switch (ch) {
+ case '<':
+ if (p - s->arg_start == 0) {
+ state = sw_start;
+ goto done;
+ }
+
+ arg = ngx_array_push(&s->args);
+ if (arg == NULL) {
+ return NGX_ERROR;
+ }
+
+ arg->len = p - s->arg_start;
+ arg->data = s->arg_start;
+
+ state = sw_start;
+ goto done;
+ }
+ break;
+
+ }
+ }
+
+ s->buffer->pos = p;
+ s->state = state;
+
+ return NGX_AGAIN;
+
+done:
+
+ s->buffer->pos = p + 1;
+ s->state = sw_start;
+
+ return NGX_OK;
+
+invalid:
+
+ s->state = sw_start;
+
+ return NGX_MAIL_PARSE_INVALID_COMMAND;
+}
ngx_int_t
--- nginx-1.10.1-10.orig/src/mail/ngx_mail_proxy_module.c
+++ nginx-1.10.1-10/src/mail/ngx_mail_proxy_module.c
@@ -25,6 +25,9 @@ static void ngx_mail_proxy_block_read(ng
static void ngx_mail_proxy_pop3_handler(ngx_event_t *rev);
static void ngx_mail_proxy_imap_handler(ngx_event_t *rev);
static void ngx_mail_proxy_smtp_handler(ngx_event_t *rev);
+static void ngx_mail_proxy_xmpp_auth_fixup(ngx_mail_session_t *s);
+static void ngx_mail_proxy_xmpp_write_handler(ngx_event_t *rev);
+static void ngx_mail_proxy_xmpp_read_handler(ngx_event_t *rev);
static void ngx_mail_proxy_dummy_handler(ngx_event_t *ev);
static ngx_int_t ngx_mail_proxy_read_response(ngx_mail_session_t *s,
ngx_uint_t state);
@@ -173,11 +176,28 @@ ngx_mail_proxy_init(ngx_mail_session_t *
s->mail_state = ngx_imap_start;
break;
+ case NGX_MAIL_XMPP_PROTOCOL:
+ ngx_mail_proxy_xmpp_auth_fixup(s);
+ p->upstream.connection->read->handler = ngx_mail_proxy_xmpp_read_handler;
+ p->upstream.connection->write->handler = ngx_mail_proxy_xmpp_write_handler;
+ s->mail_state = ngx_xmpp_start;
+ break;
+
default: /* NGX_MAIL_SMTP_PROTOCOL */
p->upstream.connection->read->handler = ngx_mail_proxy_smtp_handler;
s->mail_state = ngx_smtp_start;
break;
}
+
+ if (s->protocol != NGX_MAIL_XMPP_PROTOCOL)
+ return;
+
+ /* XMPP client sends first */
+ if (rc == NGX_OK) {
+ ngx_mail_proxy_xmpp_write_handler(p->upstream.connection->write);
+ return;
+ }
+
}
@@ -697,6 +717,209 @@ ngx_mail_proxy_smtp_handler(ngx_event_t
}
+static u_char xmpp_stream_header_stream[] =
+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<stream:stream version=\"1.0\" xmlns:stream=\"http://etherx.jabber.org/streams\" xmlns=\"jabber:client\" to=\"";
+static u_char xmpp_stream_header_stream_end[] =
+ "\">";
+static u_char xmpp_stream_header_auth[] =
+ "<auth mechanism=\"PLAIN\" xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">";
+static u_char xmpp_stream_header_auth_end[] =
+ "</auth>";
+
+static void
+ngx_mail_proxy_xmpp_auth_fixup(ngx_mail_session_t *s)
+{
+ u_char *p, *last;
+
+ for (
+ p = s->login.data, last = p + s->login.len;
+ p < last;
+ p++) {
+
+ if (*p == '@') {
+ s->login.len = p - s->login.data;
+ *p++ = 0;
+ s->host.data = p;
+ s->host.len = last - p;
+ return;
+ }
+ }
+}
+
+static void
+ngx_mail_proxy_xmpp_write_handler(ngx_event_t *rev)
+{
+ u_char *p;
+ ngx_str_t line;
+ ngx_str_t plain, plainb64;
+ ngx_connection_t *c;
+ ngx_mail_session_t *s;
+ int len;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0,
+ "mail proxy xmpp write auth handler");
+
+ c = rev->data;
+ s = c->data;
+
+ if (rev->timedout) {
+ ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
+ "upstream timed out");
+ c->timedout = 1;
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ switch (s->mail_state) {
+
+ case ngx_xmpp_start:
+ ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy xmpp stream start");
+
+ s->connection->log->action = "starting xmpp stream";
+
+ line.len = sizeof(xmpp_stream_header_stream) - 1
+ + s->host.len
+ + sizeof(xmpp_stream_header_stream_end) - 1;
+
+ line.data = ngx_pnalloc(c->pool, line.len);
+ if (line.data == NULL) {
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ p = ngx_cpymem(line.data, xmpp_stream_header_stream, sizeof(xmpp_stream_header_stream) - 1);
+ p = ngx_cpymem(p, s->host.data, s->host.len);
+ p = ngx_cpymem(p, xmpp_stream_header_stream_end, sizeof(xmpp_stream_header_stream_end) - 1);
+
+ s->mail_state = ngx_xmpp_stream;
+
+ break;
+
+ case ngx_xmpp_auth_plain:
+ ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail proxy xmpp auth");
+
+ s->connection->log->action = "starting xmpp auth";
+
+ len = s->login.len + s->passwd.len + 2;
+
+ plainb64.data = ngx_pnalloc(c->pool, ngx_base64_encoded_length(s->login.len + s->passwd.len + 2) + 1);
+ if (plainb64.data == NULL) {
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ p = ngx_pnalloc(c->pool, len + 1);
+ if (p == NULL) {
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ plain.data = p;
+ plain.len = len;
+
+ *p++ = '\0';
+ p = ngx_cpymem(p, s->login.data, s->login.len);
+ *p++ = '\0';
+ p = ngx_cpymem(p, s->passwd.data, s->passwd.len);
+
+ ngx_encode_base64(&plainb64, &plain);
+
+ line.len = sizeof(xmpp_stream_header_auth) - 1
+ + plainb64.len
+ + sizeof(xmpp_stream_header_auth_end) - 1;
+
+ line.data = ngx_pnalloc(c->pool, line.len);
+ if (line.data == NULL) {
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ p = ngx_cpymem(line.data, xmpp_stream_header_auth, sizeof(xmpp_stream_header_auth) - 1);
+ p = ngx_cpymem(p, plainb64.data, plainb64.len);
+ p = ngx_cpymem(p, xmpp_stream_header_auth_end, sizeof(xmpp_stream_header_auth_end) - 1);
+
+ s->mail_state = ngx_xmpp_auth_plain;
+
+ break;
+
+ default:
+#if (NGX_SUPPRESS_WARN)
+ ngx_str_null(&line);
+#endif
+ break;
+ }
+
+ if (c->send(c, line.data, line.len) < (ssize_t) line.len) {
+ ngx_close_connection(c);
+ ngx_destroy_pool(c->pool);
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+}
+
+static void
+ngx_mail_proxy_xmpp_read_handler(ngx_event_t *rev)
+{
+ ngx_int_t rc;
+ ngx_connection_t *c;
+ ngx_mail_session_t *s;
+ ngx_mail_proxy_conf_t *pcf;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0,
+ "mail proxy xmpp auth handler");
+
+ c = rev->data;
+ s = c->data;
+
+ if (rev->timedout) {
+ ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
+ "upstream timed out");
+ c->timedout = 1;
+ ngx_mail_proxy_internal_server_error(s);
+ return;
+ }
+
+ rc = ngx_mail_proxy_read_response(s, s->mail_state);
+
+ if (rc == NGX_AGAIN) {
+ return;
+ }
+
+ if (rc == NGX_ERROR) {
+ ngx_mail_proxy_upstream_error(s);
+ return;
+ }
+
+ switch (s->mail_state) {
+
+ case ngx_xmpp_stream:
+ s->mail_state = ngx_xmpp_auth_plain;
+ break;
+
+ case ngx_xmpp_auth_plain:
+ s->connection->read->handler = ngx_mail_proxy_handler;
+ s->connection->write->handler = ngx_mail_proxy_handler;
+ rev->handler = ngx_mail_proxy_handler;
+ c->write->handler = ngx_mail_proxy_handler;
+
+ pcf = ngx_mail_get_module_srv_conf(s, ngx_mail_proxy_module);
+ ngx_add_timer(s->connection->read, pcf->timeout);
+ ngx_del_timer(c->read);
+
+ c->log->action = NULL;
+ ngx_log_error(NGX_LOG_INFO, c->log, 0, "client logged in");
+
+ ngx_mail_proxy_handler(s->connection->write);
+
+ break;
+ }
+
+ s->proxy->buffer->pos = s->proxy->buffer->start;
+ s->proxy->buffer->last = s->proxy->buffer->start;
+}
+
+
static void
ngx_mail_proxy_dummy_handler(ngx_event_t *wev)
{
@@ -743,16 +966,18 @@ ngx_mail_proxy_read_response(ngx_mail_se
return NGX_AGAIN;
}
- if (*(b->last - 2) != CR || *(b->last - 1) != LF) {
- if (b->last == b->end) {
- *(b->last - 1) = '\0';
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "upstream sent too long response line: \"%s\"",
- b->pos);
- return NGX_ERROR;
- }
+ if (s->protocol != NGX_MAIL_XMPP_PROTOCOL) {
+ if (*(b->last - 2) != CR || *(b->last - 1) != LF) {
+ if (b->last == b->end) {
+ *(b->last - 1) = '\0';
+ ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
+ "upstream sent too long response line: \"%s\"",
+ b->pos);
+ return NGX_ERROR;
+ }
- return NGX_AGAIN;
+ return NGX_AGAIN;
+ }
}
p = b->pos;
@@ -792,6 +1017,89 @@ ngx_mail_proxy_read_response(ngx_mail_se
}
break;
+
+ case NGX_MAIL_XMPP_PROTOCOL:
+ switch (state) {
+
+ case ngx_xmpp_stream:
+
+ while (p < b->last) {
+ if (b->last - p < 18) {
+ b->pos = p;
+ return NGX_AGAIN;
+ }
+
+ if (p[0] == '<' &&
+ p[1] == '/' &&
+ p[2] == 's' &&
+ p[3] == 't' &&
+ p[4] == 'r' &&
+ p[5] == 'e' &&
+ p[6] == 'a' &&
+ p[7] == 'm' &&
+ p[8] == ':' &&
+ p[9] == 'f' &&
+ p[10] == 'e' &&
+ p[11] == 'a' &&
+ p[12] == 't' &&
+ p[13] == 'u' &&
+ p[14] == 'r' &&
+ p[15] == 'e' &&
+ p[16] == 's' &&
+ p[17] == '>') {
+ b->pos = p;
+ return NGX_OK;
+ }
+
+ p++;
+ }
+
+ b->pos = p;
+ return NGX_AGAIN;
+
+ case ngx_xmpp_auth_plain:
+
+ while (p < b->last) {
+ if (b->last - p < 8) {
+ b->pos = p;
+ return NGX_AGAIN;
+ }
+
+ if (p[0] == '<') {
+ if (p[1] == 's' &&
+ p[2] == 'u' &&
+ p[3] == 'c' &&
+ p[4] == 'c' &&
+ p[5] == 'e' &&
+ p[6] == 's' &&
+ p[7] == 's') {
+ b->pos = p;
+ return NGX_OK;
+ }
+
+ if (p[1] == 'f' &&
+ p[2] == 'a' &&
+ p[3] == 'i' &&
+ p[4] == 'l' &&
+ p[5] == 'u' &&
+ p[6] == 'r' &&
+ p[7] == 'e') {
+ b->pos = p;
+ ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
+ "upstream auth failed: \"%s\"",
+ b->pos);
+ return NGX_ERROR;
+ }
+ }
+
+ p++;
+ }
+
+ b->pos = p;
+ return NGX_AGAIN;
+ }
+
+ break;
default: /* NGX_MAIL_SMTP_PROTOCOL */
--- /dev/null
+++ nginx-1.10.1-10/src/mail/ngx_mail_xmpp_handler.c
@@ -0,0 +1,490 @@
+
+/*
+ * 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_xmpp_module.h>
+
+
+static ngx_int_t ngx_mail_xmpp_stream(ngx_mail_session_t *s,
+ ngx_connection_t *c);
+static ngx_int_t ngx_mail_xmpp_starttls(ngx_mail_session_t *s,
+ ngx_connection_t *c);
+static ngx_int_t ngx_mail_xmpp_auth(ngx_mail_session_t *s,
+ ngx_connection_t *c);
+static void ngx_mail_xmpp_auth_fixup(ngx_mail_session_t *s,
+ ngx_connection_t *c);
+
+
+static u_char xmpp_stream_header_from[] =
+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<stream:stream version=\"1.0\" xmlns:stream=\"http://etherx.jabber.org/streams\" xmlns=\"jabber:client\" from=\"";
+static u_char xmpp_stream_header_id[] =
+ "\" id=\"";
+static u_char xmpp_stream_header_features[] =
+ "\"><stream:features>";
+static u_char xmpp_stream_feature_starttls[] =
+ "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"/>";
+static u_char xmpp_stream_feature_starttls_required[] =
+ "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"><required/></starttls>";
+static u_char xmpp_stream_feature_sasl_start[] =
+ "<mechanisms xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">";
+static u_char xmpp_stream_feature_sasl_end[] =
+ "</mechanisms>";
+static u_char xmpp_stream_header_end[] =
+ "</stream:features>";
+
+#if (NGX_MAIL_SSL)
+static u_char xmpp_starttls_proceed[] =
+ "<proceed xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"/>";
+#endif
+
+static u_char xmpp_auth_login_username_challenge[] =
+ "<challenge xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">VXNlcm5hbWU6</challenge>";
+static u_char xmpp_auth_login_password_challenge[] =
+ "<challenge xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\">UGFzc3dvcmQ6</challenge>";
+static u_char xmpp_auth_plain_challenge[] =
+ "<challenge xmlns=\"urn:ietf:params:xml:ns:xmpp-sasl\"/>";
+
+#define XMPP_STREAM_UNDEFINED_CONDITION \
+ "<stream:error>" \
+ "<undefined-condition xmlns=\"urn:ietf:params:xml:ns:xmpp-streams\"/>" \
+ "</stream:error>"
+
+#define XMPP_STREAM_CLOSE \
+ "</stream:stream>"
+
+static u_char xmpp_stream_close[] =
+ XMPP_STREAM_CLOSE;
+
+static u_char xmpp_error_undefined_condition[] =
+ XMPP_STREAM_UNDEFINED_CONDITION
+ XMPP_STREAM_CLOSE;
+
+static u_char xmpp_error_stream_undefined_condition[] =
+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+ "<stream:stream version=\"1.0\" xmlns:stream=\"http://etherx.jabber.org/streams\">"
+ XMPP_STREAM_UNDEFINED_CONDITION
+ XMPP_STREAM_CLOSE;
+
+
+void
+ngx_mail_xmpp_init_session(ngx_mail_session_t *s, ngx_connection_t *c)
+{
+ ngx_mail_core_srv_conf_t *cscf;
+
+ cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module);
+
+ c->read->handler = ngx_mail_xmpp_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_xmpp_init_protocol(ngx_event_t *rev)
+{
+ ngx_connection_t *c;
+ ngx_mail_session_t *s;
+ ngx_mail_xmpp_srv_conf_t *iscf;
+
+ 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;
+ }
+
+ iscf = ngx_mail_get_module_srv_conf(s, ngx_mail_xmpp_module);
+
+ s->buffer = ngx_create_temp_buf(c->pool, iscf->client_buffer_size);
+ if (s->buffer == NULL) {
+ ngx_mail_session_internal_server_error(s);
+ return;
+ }
+ }
+
+ s->mail_state = ngx_xmpp_start;
+ c->read->handler = ngx_mail_xmpp_auth_state;
+
+ ngx_mail_xmpp_auth_state(rev);
+}
+
+
+void
+ngx_mail_xmpp_auth_state(ngx_event_t *rev)
+{
+ ngx_int_t rc, do_close;
+ ngx_connection_t *c;
+ ngx_mail_session_t *s;
+
+ do_close = 0;
+
+ c = rev->data;
+ s = c->data;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "xmpp 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, "xmpp 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;
+ }
+
+ s->text.len = 0;
+
+ if (rc == NGX_OK) {
+ ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, "xmpp auth command: %i",
+ s->command);
+
+ switch (s->mail_state) {
+
+ case ngx_xmpp_start:
+
+ switch (s->command) {
+
+ case NGX_XMPP_STREAM:
+ rc = ngx_mail_xmpp_stream(s, c);
+ break;
+
+ default:
+ rc = NGX_MAIL_PARSE_INVALID_COMMAND;
+ break;
+ }
+
+ break;
+
+ case ngx_xmpp_stream:
+
+ switch (s->command) {
+
+ case NGX_XMPP_STARTTLS:
+ rc = ngx_mail_xmpp_starttls(s, c);
+ break;
+
+ case NGX_XMPP_AUTH:
+ rc = ngx_mail_xmpp_auth(s, c);
+ break;
+
+ case NGX_XMPP_STREAM:
+ ngx_str_set(&s->out, xmpp_stream_close);
+ do_close = 1;
+ break;
+
+ default:
+ rc = NGX_MAIL_PARSE_INVALID_COMMAND;
+ break;
+
+ }
+
+ break;
+
+ case ngx_xmpp_auth_login_username:
+ rc = ngx_mail_auth_login_username(s, c, 0);
+
+ ngx_str_set(&s->out, xmpp_auth_login_password_challenge);
+ s->mail_state = ngx_xmpp_auth_login_password;
+
+ break;
+
+ case ngx_xmpp_auth_login_password:
+ rc = ngx_mail_auth_login_password(s, c);
+ break;
+
+ case ngx_xmpp_auth_plain:
+ rc = ngx_mail_auth_plain(s, c, 0);
+ break;
+
+ }
+ }
+
+ switch (rc) {
+
+ case NGX_DONE:
+ s->buffer->pos = s->buffer->last;
+