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src/mail/ngx_mail_auth_http_module.c - nginx-1.7.10
Global variables defined
Data types defined
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_event.h>
- #include <ngx_event_connect.h>
- #include <ngx_mail.h>
- typedef struct {
- ngx_addr_t *peer;
- ngx_msec_t timeout;
- ngx_str_t host_header;
- ngx_str_t uri;
- ngx_str_t header;
- ngx_array_t *headers;
- u_char *file;
- ngx_uint_t line;
- } ngx_mail_auth_http_conf_t;
- typedef struct ngx_mail_auth_http_ctx_s ngx_mail_auth_http_ctx_t;
- typedef void (*ngx_mail_auth_http_handler_pt)(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx);
- struct ngx_mail_auth_http_ctx_s {
- ngx_buf_t *request;
- ngx_buf_t *response;
- ngx_peer_connection_t peer;
- ngx_mail_auth_http_handler_pt handler;
- ngx_uint_t state;
- u_char *header_name_start;
- u_char *header_name_end;
- u_char *header_start;
- u_char *header_end;
- ngx_str_t addr;
- ngx_str_t port;
- ngx_str_t err;
- ngx_str_t errmsg;
- ngx_str_t errcode;
- time_t sleep;
- ngx_pool_t *pool;
- };
- static void ngx_mail_auth_http_write_handler(ngx_event_t *wev);
- static void ngx_mail_auth_http_read_handler(ngx_event_t *rev);
- static void ngx_mail_auth_http_ignore_status_line(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx);
- static void ngx_mail_auth_http_process_headers(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx);
- static void ngx_mail_auth_sleep_handler(ngx_event_t *rev);
- static ngx_int_t ngx_mail_auth_http_parse_header_line(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx);
- static void ngx_mail_auth_http_block_read(ngx_event_t *rev);
- static void ngx_mail_auth_http_dummy_handler(ngx_event_t *ev);
- static ngx_buf_t *ngx_mail_auth_http_create_request(ngx_mail_session_t *s,
- ngx_pool_t *pool, ngx_mail_auth_http_conf_t *ahcf);
- static ngx_int_t ngx_mail_auth_http_escape(ngx_pool_t *pool, ngx_str_t *text,
- ngx_str_t *escaped);
- static void *ngx_mail_auth_http_create_conf(ngx_conf_t *cf);
- static char *ngx_mail_auth_http_merge_conf(ngx_conf_t *cf, void *parent,
- void *child);
- static char *ngx_mail_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
- static char *ngx_mail_auth_http_header(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf);
- static ngx_command_t ngx_mail_auth_http_commands[] = {
- { ngx_string("auth_http"),
- NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
- ngx_mail_auth_http,
- NGX_MAIL_SRV_CONF_OFFSET,
- 0,
- NULL },
- { ngx_string("auth_http_timeout"),
- NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- NGX_MAIL_SRV_CONF_OFFSET,
- offsetof(ngx_mail_auth_http_conf_t, timeout),
- NULL },
- { ngx_string("auth_http_header"),
- NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE2,
- ngx_mail_auth_http_header,
- NGX_MAIL_SRV_CONF_OFFSET,
- 0,
- NULL },
- ngx_null_command
- };
- static ngx_mail_module_t ngx_mail_auth_http_module_ctx = {
- NULL,
- NULL,
- NULL,
- ngx_mail_auth_http_create_conf,
- ngx_mail_auth_http_merge_conf
- };
- ngx_module_t ngx_mail_auth_http_module = {
- NGX_MODULE_V1,
- &ngx_mail_auth_http_module_ctx,
- ngx_mail_auth_http_commands,
- NGX_MAIL_MODULE,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- static ngx_str_t ngx_mail_auth_http_method[] = {
- ngx_string("plain"),
- ngx_string("plain"),
- ngx_string("plain"),
- ngx_string("apop"),
- ngx_string("cram-md5"),
- ngx_string("none")
- };
- static ngx_str_t ngx_mail_smtp_errcode = ngx_string("535 5.7.0");
- void
- ngx_mail_auth_http_init(ngx_mail_session_t *s)
- {
- ngx_int_t rc;
- ngx_pool_t *pool;
- ngx_mail_auth_http_ctx_t *ctx;
- ngx_mail_auth_http_conf_t *ahcf;
- s->connection->log->action = "in http auth state";
- pool = ngx_create_pool(2048, s->connection->log);
- if (pool == NULL) {
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ctx = ngx_pcalloc(pool, sizeof(ngx_mail_auth_http_ctx_t));
- if (ctx == NULL) {
- ngx_destroy_pool(pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ctx->pool = pool;
- ahcf = ngx_mail_get_module_srv_conf(s, ngx_mail_auth_http_module);
- ctx->request = ngx_mail_auth_http_create_request(s, pool, ahcf);
- if (ctx->request == NULL) {
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ngx_mail_set_ctx(s, ctx, ngx_mail_auth_http_module);
- ctx->peer.sockaddr = ahcf->peer->sockaddr;
- ctx->peer.socklen = ahcf->peer->socklen;
- ctx->peer.name = &ahcf->peer->name;
- ctx->peer.get = ngx_event_get_peer;
- ctx->peer.log = s->connection->log;
- ctx->peer.log_error = NGX_ERROR_ERR;
- rc = ngx_event_connect_peer(&ctx->peer);
- if (rc == NGX_ERROR || rc == NGX_BUSY || rc == NGX_DECLINED) {
- if (ctx->peer.connection) {
- ngx_close_connection(ctx->peer.connection);
- }
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ctx->peer.connection->data = s;
- ctx->peer.connection->pool = s->connection->pool;
- s->connection->read->handler = ngx_mail_auth_http_block_read;
- ctx->peer.connection->read->handler = ngx_mail_auth_http_read_handler;
- ctx->peer.connection->write->handler = ngx_mail_auth_http_write_handler;
- ctx->handler = ngx_mail_auth_http_ignore_status_line;
- ngx_add_timer(ctx->peer.connection->read, ahcf->timeout);
- ngx_add_timer(ctx->peer.connection->write, ahcf->timeout);
- if (rc == NGX_OK) {
- ngx_mail_auth_http_write_handler(ctx->peer.connection->write);
- return;
- }
- }
- static void
- ngx_mail_auth_http_write_handler(ngx_event_t *wev)
- {
- ssize_t n, size;
- ngx_connection_t *c;
- ngx_mail_session_t *s;
- ngx_mail_auth_http_ctx_t *ctx;
- ngx_mail_auth_http_conf_t *ahcf;
- c = wev->data;
- s = c->data;
- ctx = ngx_mail_get_module_ctx(s, ngx_mail_auth_http_module);
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, wev->log, 0,
- "mail auth http write handler");
- if (wev->timedout) {
- ngx_log_error(NGX_LOG_ERR, wev->log, NGX_ETIMEDOUT,
- "auth http server %V timed out", ctx->peer.name);
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- size = ctx->request->last - ctx->request->pos;
- n = ngx_send(c, ctx->request->pos, size);
- if (n == NGX_ERROR) {
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- if (n > 0) {
- ctx->request->pos += n;
- if (n == size) {
- wev->handler = ngx_mail_auth_http_dummy_handler;
- if (wev->timer_set) {
- ngx_del_timer(wev);
- }
- if (ngx_handle_write_event(wev, 0) != NGX_OK) {
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- }
- return;
- }
- }
- if (!wev->timer_set) {
- ahcf = ngx_mail_get_module_srv_conf(s, ngx_mail_auth_http_module);
- ngx_add_timer(wev, ahcf->timeout);
- }
- }
- static void
- ngx_mail_auth_http_read_handler(ngx_event_t *rev)
- {
- ssize_t n, size;
- ngx_connection_t *c;
- ngx_mail_session_t *s;
- ngx_mail_auth_http_ctx_t *ctx;
- c = rev->data;
- s = c->data;
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0,
- "mail auth http read handler");
- ctx = ngx_mail_get_module_ctx(s, ngx_mail_auth_http_module);
- if (rev->timedout) {
- ngx_log_error(NGX_LOG_ERR, rev->log, NGX_ETIMEDOUT,
- "auth http server %V timed out", ctx->peer.name);
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- if (ctx->response == NULL) {
- ctx->response = ngx_create_temp_buf(ctx->pool, 1024);
- if (ctx->response == NULL) {
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- }
- size = ctx->response->end - ctx->response->last;
- n = ngx_recv(c, ctx->response->pos, size);
- if (n > 0) {
- ctx->response->last += n;
- ctx->handler(s, ctx);
- return;
- }
- if (n == NGX_AGAIN) {
- return;
- }
- ngx_close_connection(c);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- }
- static void
- ngx_mail_auth_http_ignore_status_line(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx)
- {
- u_char *p, ch;
- enum {
- sw_start = 0,
- sw_H,
- sw_HT,
- sw_HTT,
- sw_HTTP,
- sw_skip,
- sw_almost_done
- } state;
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, s->connection->log, 0,
- "mail auth http process status line");
- state = ctx->state;
- for (p = ctx->response->pos; p < ctx->response->last; p++) {
- ch = *p;
- switch (state) {
-
- case sw_start:
- if (ch == 'H') {
- state = sw_H;
- break;
- }
- goto next;
- case sw_H:
- if (ch == 'T') {
- state = sw_HT;
- break;
- }
- goto next;
- case sw_HT:
- if (ch == 'T') {
- state = sw_HTT;
- break;
- }
- goto next;
- case sw_HTT:
- if (ch == 'P') {
- state = sw_HTTP;
- break;
- }
- goto next;
- case sw_HTTP:
- if (ch == '/') {
- state = sw_skip;
- break;
- }
- goto next;
-
- case sw_skip:
- switch (ch) {
- case CR:
- state = sw_almost_done;
- break;
- case LF:
- goto done;
- }
- break;
-
- case sw_almost_done:
- if (ch == LF) {
- goto done;
- }
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server &V sent invalid response",
- ctx->peer.name);
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- }
- ctx->response->pos = p;
- ctx->state = state;
- return;
- next:
- p = ctx->response->start - 1;
- done:
- ctx->response->pos = p + 1;
- ctx->state = 0;
- ctx->handler = ngx_mail_auth_http_process_headers;
- ctx->handler(s, ctx);
- }
- static void
- ngx_mail_auth_http_process_headers(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx)
- {
- u_char *p;
- time_t timer;
- size_t len, size;
- ngx_int_t rc, port, n;
- ngx_addr_t *peer;
- struct sockaddr_in *sin;
- #if (NGX_HAVE_INET6)
- struct sockaddr_in6 *sin6;
- #endif
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, s->connection->log, 0,
- "mail auth http process headers");
- for ( ;; ) {
- rc = ngx_mail_auth_http_parse_header_line(s, ctx);
- if (rc == NGX_OK) {
- #if (NGX_DEBUG)
- {
- ngx_str_t key, value;
- key.len = ctx->header_name_end - ctx->header_name_start;
- key.data = ctx->header_name_start;
- value.len = ctx->header_end - ctx->header_start;
- value.data = ctx->header_start;
- ngx_log_debug2(NGX_LOG_DEBUG_MAIL, s->connection->log, 0,
- "mail auth http header: \"%V: %V\"",
- &key, &value);
- }
- #endif
- len = ctx->header_name_end - ctx->header_name_start;
- if (len == sizeof("Auth-Status") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Status",
- sizeof("Auth-Status") - 1)
- == 0)
- {
- len = ctx->header_end - ctx->header_start;
- if (len == 2
- && ctx->header_start[0] == 'O'
- && ctx->header_start[1] == 'K')
- {
- continue;
- }
- if (len == 4
- && ctx->header_start[0] == 'W'
- && ctx->header_start[1] == 'A'
- && ctx->header_start[2] == 'I'
- && ctx->header_start[3] == 'T')
- {
- s->auth_wait = 1;
- continue;
- }
- ctx->errmsg.len = len;
- ctx->errmsg.data = ctx->header_start;
- switch (s->protocol) {
- case NGX_MAIL_POP3_PROTOCOL:
- size = sizeof("-ERR ") - 1 + len + sizeof(CRLF) - 1;
- break;
- case NGX_MAIL_IMAP_PROTOCOL:
- size = s->tag.len + sizeof("NO ") - 1 + len
- + sizeof(CRLF) - 1;
- break;
- default:
- ctx->err = ctx->errmsg;
- continue;
- }
- p = ngx_pnalloc(s->connection->pool, size);
- if (p == NULL) {
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ctx->err.data = p;
- switch (s->protocol) {
- case NGX_MAIL_POP3_PROTOCOL:
- *p++ = '-'; *p++ = 'E'; *p++ = 'R'; *p++ = 'R'; *p++ = ' ';
- break;
- case NGX_MAIL_IMAP_PROTOCOL:
- p = ngx_cpymem(p, s->tag.data, s->tag.len);
- *p++ = 'N'; *p++ = 'O'; *p++ = ' ';
- break;
- default:
- break;
- }
- p = ngx_cpymem(p, ctx->header_start, len);
- *p++ = CR; *p++ = LF;
- ctx->err.len = p - ctx->err.data;
- continue;
- }
- if (len == sizeof("Auth-Server") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Server",
- sizeof("Auth-Server") - 1)
- == 0)
- {
- ctx->addr.len = ctx->header_end - ctx->header_start;
- ctx->addr.data = ctx->header_start;
- continue;
- }
- if (len == sizeof("Auth-Port") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Port",
- sizeof("Auth-Port") - 1)
- == 0)
- {
- ctx->port.len = ctx->header_end - ctx->header_start;
- ctx->port.data = ctx->header_start;
- continue;
- }
- if (len == sizeof("Auth-User") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-User",
- sizeof("Auth-User") - 1)
- == 0)
- {
- s->login.len = ctx->header_end - ctx->header_start;
- s->login.data = ngx_pnalloc(s->connection->pool, s->login.len);
- if (s->login.data == NULL) {
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ngx_memcpy(s->login.data, ctx->header_start, s->login.len);
- continue;
- }
- if (len == sizeof("Auth-Pass") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Pass",
- sizeof("Auth-Pass") - 1)
- == 0)
- {
- s->passwd.len = ctx->header_end - ctx->header_start;
- s->passwd.data = ngx_pnalloc(s->connection->pool,
- s->passwd.len);
- if (s->passwd.data == NULL) {
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ngx_memcpy(s->passwd.data, ctx->header_start, s->passwd.len);
- continue;
- }
- if (len == sizeof("Auth-Wait") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Wait",
- sizeof("Auth-Wait") - 1)
- == 0)
- {
- n = ngx_atoi(ctx->header_start,
- ctx->header_end - ctx->header_start);
- if (n != NGX_ERROR) {
- ctx->sleep = n;
- }
- continue;
- }
- if (len == sizeof("Auth-Error-Code") - 1
- && ngx_strncasecmp(ctx->header_name_start,
- (u_char *) "Auth-Error-Code",
- sizeof("Auth-Error-Code") - 1)
- == 0)
- {
- ctx->errcode.len = ctx->header_end - ctx->header_start;
- ctx->errcode.data = ngx_pnalloc(s->connection->pool,
- ctx->errcode.len);
- if (ctx->errcode.data == NULL) {
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ngx_memcpy(ctx->errcode.data, ctx->header_start,
- ctx->errcode.len);
- continue;
- }
-
- continue;
- }
- if (rc == NGX_DONE) {
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, s->connection->log, 0,
- "mail auth http header done");
- ngx_close_connection(ctx->peer.connection);
- if (ctx->err.len) {
- ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
- "client login failed: \"%V\"", &ctx->errmsg);
- if (s->protocol == NGX_MAIL_SMTP_PROTOCOL) {
- if (ctx->errcode.len == 0) {
- ctx->errcode = ngx_mail_smtp_errcode;
- }
- ctx->err.len = ctx->errcode.len + ctx->errmsg.len
- + sizeof(" " CRLF) - 1;
- p = ngx_pnalloc(s->connection->pool, ctx->err.len);
- if (p == NULL) {
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- ctx->err.data = p;
- p = ngx_cpymem(p, ctx->errcode.data, ctx->errcode.len);
- *p++ = ' ';
- p = ngx_cpymem(p, ctx->errmsg.data, ctx->errmsg.len);
- *p++ = CR; *p = LF;
- }
- s->out = ctx->err;
- timer = ctx->sleep;
- ngx_destroy_pool(ctx->pool);
- if (timer == 0) {
- s->quit = 1;
- ngx_mail_send(s->connection->write);
- return;
- }
- ngx_add_timer(s->connection->read, (ngx_msec_t) (timer * 1000));
- s->connection->read->handler = ngx_mail_auth_sleep_handler;
- return;
- }
- if (s->auth_wait) {
- timer = ctx->sleep;
- ngx_destroy_pool(ctx->pool);
- if (timer == 0) {
- ngx_mail_auth_http_init(s);
- return;
- }
- ngx_add_timer(s->connection->read, (ngx_msec_t) (timer * 1000));
- s->connection->read->handler = ngx_mail_auth_sleep_handler;
- return;
- }
- if (ctx->addr.len == 0 || ctx->port.len == 0) {
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server %V did not send server or port",
- ctx->peer.name);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- if (s->passwd.data == NULL
- && s->protocol != NGX_MAIL_SMTP_PROTOCOL)
- {
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server %V did not send password",
- ctx->peer.name);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- peer = ngx_pcalloc(s->connection->pool, sizeof(ngx_addr_t));
- if (peer == NULL) {
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- rc = ngx_parse_addr(s->connection->pool, peer,
- ctx->addr.data, ctx->addr.len);
- switch (rc) {
- case NGX_OK:
- break;
- case NGX_DECLINED:
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server %V sent invalid server "
- "address:\"%V\"",
- ctx->peer.name, &ctx->addr);
-
- default:
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- port = ngx_atoi(ctx->port.data, ctx->port.len);
- if (port == NGX_ERROR || port < 1 || port > 65535) {
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server %V sent invalid server "
- "port:\"%V\"",
- ctx->peer.name, &ctx->port);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- switch (peer->sockaddr->sa_family) {
- #if (NGX_HAVE_INET6)
- case AF_INET6:
- sin6 = (struct sockaddr_in6 *) peer->sockaddr;
- sin6->sin6_port = htons((in_port_t) port);
- break;
- #endif
- default:
- sin = (struct sockaddr_in *) peer->sockaddr;
- sin->sin_port = htons((in_port_t) port);
- break;
- }
- len = ctx->addr.len + 1 + ctx->port.len;
- peer->name.len = len;
- peer->name.data = ngx_pnalloc(s->connection->pool, len);
- if (peer->name.data == NULL) {
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- len = ctx->addr.len;
- ngx_memcpy(peer->name.data, ctx->addr.data, len);
- peer->name.data[len++] = ':';
- ngx_memcpy(peer->name.data + len, ctx->port.data, ctx->port.len);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_proxy_init(s, peer);
- return;
- }
- if (rc == NGX_AGAIN ) {
- return;
- }
-
- ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
- "auth http server %V sent invalid header in response",
- ctx->peer.name);
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- return;
- }
- }
- static void
- ngx_mail_auth_sleep_handler(ngx_event_t *rev)
- {
- ngx_connection_t *c;
- ngx_mail_session_t *s;
- ngx_mail_core_srv_conf_t *cscf;
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0, "mail auth sleep handler");
- c = rev->data;
- s = c->data;
- if (rev->timedout) {
- rev->timedout = 0;
- if (s->auth_wait) {
- s->auth_wait = 0;
- ngx_mail_auth_http_init(s);
- return;
- }
- cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module);
- rev->handler = cscf->protocol->auth_state;
- s->mail_state = 0;
- s->auth_method = NGX_MAIL_AUTH_PLAIN;
- c->log->action = "in auth state";
- ngx_mail_send(c->write);
- if (c->destroyed) {
- return;
- }
- ngx_add_timer(rev, cscf->timeout);
- if (rev->ready) {
- rev->handler(rev);
- return;
- }
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_mail_close_connection(c);
- }
- return;
- }
- if (rev->active) {
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- ngx_mail_close_connection(c);
- }
- }
- }
- static ngx_int_t
- ngx_mail_auth_http_parse_header_line(ngx_mail_session_t *s,
- ngx_mail_auth_http_ctx_t *ctx)
- {
- u_char c, ch, *p;
- enum {
- sw_start = 0,
- sw_name,
- sw_space_before_value,
- sw_value,
- sw_space_after_value,
- sw_almost_done,
- sw_header_almost_done
- } state;
- state = ctx->state;
- for (p = ctx->response->pos; p < ctx->response->last; p++) {
- ch = *p;
- switch (state) {
-
- case sw_start:
- switch (ch) {
- case CR:
- ctx->header_end = p;
- state = sw_header_almost_done;
- break;
- case LF:
- ctx->header_end = p;
- goto header_done;
- default:
- state = sw_name;
- ctx->header_name_start = p;
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- break;
- }
- if (ch >= '0' && ch <= '9') {
- break;
- }
- return NGX_ERROR;
- }
- break;
-
- case sw_name:
- c = (u_char) (ch | 0x20);
- if (c >= 'a' && c <= 'z') {
- break;
- }
- if (ch == ':') {
- ctx->header_name_end = p;
- state = sw_space_before_value;
- break;
- }
- if (ch == '-') {
- break;
- }
- if (ch >= '0' && ch <= '9') {
- break;
- }
- if (ch == CR) {
- ctx->header_name_end = p;
- ctx->header_start = p;
- ctx->header_end = p;
- state = sw_almost_done;
- break;
- }
- if (ch == LF) {
- ctx->header_name_end = p;
- ctx->header_start = p;
- ctx->header_end = p;
- goto done;
- }
- return NGX_ERROR;
-
- case sw_space_before_value:
- switch (ch) {
- case ' ':
- break;
- case CR:
- ctx->header_start = p;
- ctx->header_end = p;
- state = sw_almost_done;
- break;
- case LF:
- ctx->header_start = p;
- ctx->header_end = p;
- goto done;
- default:
- ctx->header_start = p;
- state = sw_value;
- break;
- }
- break;
-
- case sw_value:
- switch (ch) {
- case ' ':
- ctx->header_end = p;
- state = sw_space_after_value;
- break;
- case CR:
- ctx->header_end = p;
- state = sw_almost_done;
- break;
- case LF:
- ctx->header_end = p;
- goto done;
- }
- break;
-
- case sw_space_after_value:
- switch (ch) {
- case ' ':
- break;
- case CR:
- state = sw_almost_done;
- break;
- case LF:
- goto done;
- default:
- state = sw_value;
- break;
- }
- break;
-
- case sw_almost_done:
- switch (ch) {
- case LF:
- goto done;
- default:
- return NGX_ERROR;
- }
-
- case sw_header_almost_done:
- switch (ch) {
- case LF:
- goto header_done;
- default:
- return NGX_ERROR;
- }
- }
- }
- ctx->response->pos = p;
- ctx->state = state;
- return NGX_AGAIN;
- done:
- ctx->response->pos = p + 1;
- ctx->state = sw_start;
- return NGX_OK;
- header_done:
- ctx->response->pos = p + 1;
- ctx->state = sw_start;
- return NGX_DONE;
- }
- static void
- ngx_mail_auth_http_block_read(ngx_event_t *rev)
- {
- ngx_connection_t *c;
- ngx_mail_session_t *s;
- ngx_mail_auth_http_ctx_t *ctx;
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, rev->log, 0,
- "mail auth http block read");
- if (ngx_handle_read_event(rev, 0) != NGX_OK) {
- c = rev->data;
- s = c->data;
- ctx = ngx_mail_get_module_ctx(s, ngx_mail_auth_http_module);
- ngx_close_connection(ctx->peer.connection);
- ngx_destroy_pool(ctx->pool);
- ngx_mail_session_internal_server_error(s);
- }
- }
- static void
- ngx_mail_auth_http_dummy_handler(ngx_event_t *ev)
- {
- ngx_log_debug0(NGX_LOG_DEBUG_MAIL, ev->log, 0,
- "mail auth http dummy handler");
- }
- static ngx_buf_t *
- ngx_mail_auth_http_create_request(ngx_mail_session_t *s, ngx_pool_t *pool,
- ngx_mail_auth_http_conf_t *ahcf)
- {
- size_t len;
- ngx_buf_t *b;
- ngx_str_t login, passwd;
- ngx_mail_core_srv_conf_t *cscf;
- if (ngx_mail_auth_http_escape(pool, &s->login, &login) != NGX_OK) {
- return NULL;
- }
- if (ngx_mail_auth_http_escape(pool, &s->passwd, &passwd) != NGX_OK) {
- return NULL;
- }
- cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module);
- len = sizeof("GET ") - 1 + ahcf->uri.len + sizeof(" HTTP/1.0" CRLF) - 1
- + sizeof("Host: ") - 1 + ahcf->host_header.len + sizeof(CRLF) - 1
- + sizeof("Auth-Method: ") - 1
- + ngx_mail_auth_http_method[s->auth_method].len
- + sizeof(CRLF) - 1
- + sizeof("Auth-User: ") - 1 + login.len + sizeof(CRLF) - 1
- + sizeof("Auth-Pass: ") - 1 + passwd.len + sizeof(CRLF) - 1
- + sizeof("Auth-Salt: ") - 1 + s->salt.len
- + sizeof("Auth-Protocol: ") - 1 + cscf->protocol->name.len
- + sizeof(CRLF) - 1
- + sizeof("Auth-Login-Attempt: ") - 1 + NGX_INT_T_LEN
- + sizeof(CRLF) - 1
- + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
- + sizeof(CRLF) - 1
- + sizeof("Client-Host: ") - 1 + s->host.len + sizeof(CRLF) - 1
- + sizeof("Auth-SMTP-Helo: ") - 1 + s->smtp_helo.len
- + sizeof("Auth-SMTP-From: ") - 1 + s->smtp_from.len
- + sizeof("Auth-SMTP-To: ") - 1 + s->smtp_to.len
- + ahcf->header.len
- + sizeof(CRLF) - 1;
- b = ngx_create_temp_buf(pool, len);
- if (b == NULL) {
- return NULL;
- }
- b->last = ngx_cpymem(b->last, "GET ", sizeof("GET ") - 1);
- b->last = ngx_copy(b->last, ahcf->uri.data, ahcf->uri.len);
- b->last = ngx_cpymem(b->last, " HTTP/1.0" CRLF,
- sizeof(" HTTP/1.0" CRLF) - 1);
- b->last = ngx_cpymem(b->last, "Host: ", sizeof("Host: ") - 1);
- b->last = ngx_copy(b->last, ahcf->host_header.data,
- ahcf->host_header.len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_cpymem(b->last, "Auth-Method: ",
- sizeof("Auth-Method: ") - 1);
- b->last = ngx_cpymem(b->last,
- ngx_mail_auth_http_method[s->auth_method].data,
- ngx_mail_auth_http_method[s->auth_method].len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_cpymem(b->last, "Auth-User: ", sizeof("Auth-User: ") - 1);
- b->last = ngx_copy(b->last, login.data, login.len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_cpymem(b->last, "Auth-Pass: ", sizeof("Auth-Pass: ") - 1);
- b->last = ngx_copy(b->last, passwd.data, passwd.len);
- *b->last++ = CR; *b->last++ = LF;
- if (s->auth_method != NGX_MAIL_AUTH_PLAIN && s->salt.len) {
- b->last = ngx_cpymem(b->last, "Auth-Salt: ", sizeof("Auth-Salt: ") - 1);
- b->last = ngx_copy(b->last, s->salt.data, s->salt.len);
- s->passwd.data = NULL;
- }
- b->last = ngx_cpymem(b->last, "Auth-Protocol: ",
- sizeof("Auth-Protocol: ") - 1);
- b->last = ngx_cpymem(b->last, cscf->protocol->name.data,
- cscf->protocol->name.len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_sprintf(b->last, "Auth-Login-Attempt: %ui" CRLF,
- s->login_attempt);
- b->last = ngx_cpymem(b->last, "Client-IP: ", sizeof("Client-IP: ") - 1);
- b->last = ngx_copy(b->last, s->connection->addr_text.data,
- s->connection->addr_text.len);
- *b->last++ = CR; *b->last++ = LF;
- if (s->host.len) {
- b->last = ngx_cpymem(b->last, "Client-Host: ",
- sizeof("Client-Host: ") - 1);
- b->last = ngx_copy(b->last, s->host.data, s->host.len);
- *b->last++ = CR; *b->last++ = LF;
- }
- if (s->auth_method == NGX_MAIL_AUTH_NONE) {
-
- b->last = ngx_cpymem(b->last, "Auth-SMTP-Helo: ",
- sizeof("Auth-SMTP-Helo: ") - 1);
- b->last = ngx_copy(b->last, s->smtp_helo.data, s->smtp_helo.len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_cpymem(b->last, "Auth-SMTP-From: ",
- sizeof("Auth-SMTP-From: ") - 1);
- b->last = ngx_copy(b->last, s->smtp_from.data, s->smtp_from.len);
- *b->last++ = CR; *b->last++ = LF;
- b->last = ngx_cpymem(b->last, "Auth-SMTP-To: ",
- sizeof("Auth-SMTP-To: ") - 1);
- b->last = ngx_copy(b->last, s->smtp_to.data, s->smtp_to.len);
- *b->last++ = CR; *b->last++ = LF;
- }
- if (ahcf->header.len) {
- b->last = ngx_copy(b->last, ahcf->header.data, ahcf->header.len);
- }
-
- *b->last++ = CR; *b->last++ = LF;
- #if (NGX_DEBUG_MAIL_PASSWD)
- {
- ngx_str_t l;
- l.len = b->last - b->pos;
- l.data = b->pos;
- ngx_log_debug1(NGX_LOG_DEBUG_MAIL, s->connection->log, 0,
- "mail auth http header:%N\"%V\"", &l);
- }
- #endif
- return b;
- }
- static ngx_int_t
- ngx_mail_auth_http_escape(ngx_pool_t *pool, ngx_str_t *text, ngx_str_t *escaped)
- {
- u_char *p;
- uintptr_t n;
- n = ngx_escape_uri(NULL, text->data, text->len, NGX_ESCAPE_MAIL_AUTH);
- if (n == 0) {
- *escaped = *text;
- return NGX_OK;
- }
- escaped->len = text->len + n * 2;
- p = ngx_pnalloc(pool, escaped->len);
- if (p == NULL) {
- return NGX_ERROR;
- }
- (void) ngx_escape_uri(p, text->data, text->len, NGX_ESCAPE_MAIL_AUTH);
- escaped->data = p;
- return NGX_OK;
- }
- static void *
- ngx_mail_auth_http_create_conf(ngx_conf_t *cf)
- {
- ngx_mail_auth_http_conf_t *ahcf;
- ahcf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_auth_http_conf_t));
- if (ahcf == NULL) {
- return NULL;
- }
- ahcf->timeout = NGX_CONF_UNSET_MSEC;
- ahcf->file = cf->conf_file->file.name.data;
- ahcf->line = cf->conf_file->line;
- return ahcf;
- }
- static char *
- ngx_mail_auth_http_merge_conf(ngx_conf_t *cf, void *parent, void *child)
- {
- ngx_mail_auth_http_conf_t *prev = parent;
- ngx_mail_auth_http_conf_t *conf = child;
- u_char *p;
- size_t len;
- ngx_uint_t i;
- ngx_table_elt_t *header;
- if (conf->peer == NULL) {
- conf->peer = prev->peer;
- conf->host_header = prev->host_header;
- conf->uri = prev->uri;
- if (conf->peer == NULL) {
- ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
- "no \"auth_http\" is defined for server in %s:%ui",
- conf->file, conf->line);
- return NGX_CONF_ERROR;
- }
- }
- ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
- if (conf->headers == NULL) {
- conf->headers = prev->headers;
- conf->header = prev->header;
- }
- if (conf->headers && conf->header.len == 0) {
- len = 0;
- header = conf->headers->elts;
- for (i = 0; i < conf->headers->nelts; i++) {
- len += header[i].key.len + 2 + header[i].value.len + 2;
- }
- p = ngx_pnalloc(cf->pool, len);
- if (p == NULL) {
- return NGX_CONF_ERROR;
- }
- conf->header.len = len;
- conf->header.data = p;
- for (i = 0; i < conf->headers->nelts; i++) {
- p = ngx_cpymem(p, header[i].key.data, header[i].key.len);
- *p++ = ':'; *p++ = ' ';
- p = ngx_cpymem(p, header[i].value.data, header[i].value.len);
- *p++ = CR; *p++ = LF;
- }
- }
- return NGX_CONF_OK;
- }
- static char *
- ngx_mail_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_mail_auth_http_conf_t *ahcf = conf;
- ngx_str_t *value;
- ngx_url_t u;
- value = cf->args->elts;
- ngx_memzero(&u, sizeof(ngx_url_t));
- u.url = value[1];
- u.default_port = 80;
- u.uri_part = 1;
- if (ngx_strncmp(u.url.data, "http://", 7) == 0) {
- u.url.len -= 7;
- u.url.data += 7;
- }
- if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
- if (u.err) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "%s in auth_http \"%V\"", u.err, &u.url);
- }
- return NGX_CONF_ERROR;
- }
- ahcf->peer = u.addrs;
- if (u.family != AF_UNIX) {
- ahcf->host_header = u.host;
- } else {
- ngx_str_set(&ahcf->host_header, "localhost");
- }
- ahcf->uri = u.uri;
- if (ahcf->uri.len == 0) {
- ngx_str_set(&ahcf->uri, "/");
- }
- return NGX_CONF_OK;
- }
- static char *
- ngx_mail_auth_http_header(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_mail_auth_http_conf_t *ahcf = conf;
- ngx_str_t *value;
- ngx_table_elt_t *header;
- if (ahcf->headers == NULL) {
- ahcf->headers = ngx_array_create(cf->pool, 1, sizeof(ngx_table_elt_t));
- if (ahcf->headers == NULL) {
- return NGX_CONF_ERROR;
- }
- }
- header = ngx_array_push(ahcf->headers);
- if (header == NULL) {
- return NGX_CONF_ERROR;
- }
- value = cf->args->elts;
- header->key = value[1];
- header->value = value[2];
- return NGX_CONF_OK;
- }
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