From bafc30bec6c1b2659ae1554030c910e05705f9d3 Mon Sep 17 00:00:00 2001
From: Deomid Ryabkov <rojer@cesanta.com>
Date: Thu, 13 Oct 2016 20:55:08 +0300
Subject: [PATCH] Change from using #ifdef to #if for features tests

"#if FOO" still works with simple -DFOO, but gives more flexibility.
Specifically, if user expressed no preference (FOO is not defined),
we can apply reasonable defaults (this is the legitimate use of ifdef).

In short, from now on, please use

 #if MG_ENABLE_FOO

instead of

 #ifdef MG_ENABLE_FOO

Since we are all used to #ifdef, this change also adds a precommit check
to police this. Specifically, in *.h and *.c files that are Copyright Cesanta,
"ifdef" and "if defined()" are not allowed to be used with macros that contain
ENABLE or DISABLE, unless the like also contains "ifdef-ok".

Hence, if you are sure you want to use ifdef, use this:

 #ifdef MG_ENABLE_FOO /* ifdef-ok */

PUBLISHED_FROM=9be829448f53cff575d6cae8b9945fb12531c15a
---
 docs/c-api/net.h/struct_mg_bind_opts.md       |   2 +-
 docs/c-api/net.h/struct_mg_connect_opts.md    |   2 +-
 docs/c-api/net.h/struct_mg_connection.md      |   2 +-
 docs/c-api/net.h/struct_mg_mgr.md             |   4 +-
 examples/CC3200/cs_dbg.h                      |   4 +-
 examples/ESP8266_RTOS/Makefile                |   2 +-
 examples/ESP8266_RTOS/user/Makefile           |   4 +-
 examples/MSP432/ccs/MSP432_MG_hello/cs_dbg.h  |   4 +-
 examples/load_balancer/load_balancer.c        |   6 +-
 examples/restful_server/restful_server.c      |  10 +-
 .../simplest_web_server_ssl.c                 |   2 +-
 mongoose.c                                    | 295 ++++++++++--------
 mongoose.h                                    | 251 +++++++++++----
 13 files changed, 380 insertions(+), 208 deletions(-)

diff --git a/docs/c-api/net.h/struct_mg_bind_opts.md b/docs/c-api/net.h/struct_mg_bind_opts.md
index 74a8758f..50c0010b 100644
--- a/docs/c-api/net.h/struct_mg_bind_opts.md
+++ b/docs/c-api/net.h/struct_mg_bind_opts.md
@@ -7,7 +7,7 @@ signature: |
     void *user_data;           /* Initial value for connection's user_data */
     unsigned int flags;        /* Extra connection flags */
     const char **error_string; /* Placeholder for the error string */
-  #ifdef MG_ENABLE_SSL
+  #if MG_ENABLE_SSL
     /* SSL settings. */
     const char *ssl_cert;    /* Server certificate to present to clients */
     const char *ssl_key;     /* Private key corresponding to the certificate.
diff --git a/docs/c-api/net.h/struct_mg_connect_opts.md b/docs/c-api/net.h/struct_mg_connect_opts.md
index c41370ee..4bb9ea66 100644
--- a/docs/c-api/net.h/struct_mg_connect_opts.md
+++ b/docs/c-api/net.h/struct_mg_connect_opts.md
@@ -7,7 +7,7 @@ signature: |
     void *user_data;           /* Initial value for connection's user_data */
     unsigned int flags;        /* Extra connection flags */
     const char **error_string; /* Placeholder for the error string */
-  #ifdef MG_ENABLE_SSL
+  #if MG_ENABLE_SSL
     /* SSL settings. */
     const char *ssl_cert;    /* Client certificate to present to the server */
     const char *ssl_key;     /* Private key corresponding to the certificate.
diff --git a/docs/c-api/net.h/struct_mg_connection.md b/docs/c-api/net.h/struct_mg_connection.md
index 76f767f8..682aa85b 100644
--- a/docs/c-api/net.h/struct_mg_connection.md
+++ b/docs/c-api/net.h/struct_mg_connection.md
@@ -14,7 +14,7 @@ signature: |
     size_t recv_mbuf_limit;  /* Max size of recv buffer */
     struct mbuf recv_mbuf;   /* Received data */
     struct mbuf send_mbuf;   /* Data scheduled for sending */
-  #if defined(MG_ENABLE_SSL)
+  #if MG_ENABLE_SSL
   #if !defined(MG_SOCKET_SIMPLELINK)
     SSL *ssl;
     SSL_CTX *ssl_ctx;
diff --git a/docs/c-api/net.h/struct_mg_mgr.md b/docs/c-api/net.h/struct_mg_mgr.md
index 5adfe6e8..eac8075f 100644
--- a/docs/c-api/net.h/struct_mg_mgr.md
+++ b/docs/c-api/net.h/struct_mg_mgr.md
@@ -6,12 +6,12 @@ signature: |
   struct mg_mgr {
     struct mg_connection *active_connections;
     const char *hexdump_file; /* Debug hexdump file path */
-  #ifndef MG_DISABLE_SOCKETPAIR
+  #if !MG_DISABLE_SOCKETPAIR
     sock_t ctl[2]; /* Socketpair for mg_broadcast() */
   #endif
     void *user_data; /* User data */
     void *mgr_data;  /* Implementation-specific event manager's data. */
-  #ifdef MG_ENABLE_JAVASCRIPT
+  #if MG_ENABLE_JAVASCRIPT
     struct v7 *v7;
   #endif
   };
diff --git a/examples/CC3200/cs_dbg.h b/examples/CC3200/cs_dbg.h
index 219ef4d4..813413d5 100644
--- a/examples/CC3200/cs_dbg.h
+++ b/examples/CC3200/cs_dbg.h
@@ -6,7 +6,7 @@
 #ifndef CS_COMMON_CS_DBG_H_
 #define CS_COMMON_CS_DBG_H_
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 #include <stdio.h>
 #endif
 
@@ -28,7 +28,7 @@ enum cs_log_level {
 
 void cs_log_set_level(enum cs_log_level level);
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 
 void cs_log_set_file(FILE *file);
 
diff --git a/examples/ESP8266_RTOS/Makefile b/examples/ESP8266_RTOS/Makefile
index 0317ff87..2d0b16a4 100644
--- a/examples/ESP8266_RTOS/Makefile
+++ b/examples/ESP8266_RTOS/Makefile
@@ -27,7 +27,7 @@ endif # } PDIR
 
 LDDIR = $(SDK_PATH)/ld
 
-CCFLAGS += -Os
+CCFLAGS += -Os -Wno-undef
 
 TARGET_LDFLAGS =		\
 	-nostdlib		\
diff --git a/examples/ESP8266_RTOS/user/Makefile b/examples/ESP8266_RTOS/user/Makefile
index 85700bed..532f357a 100644
--- a/examples/ESP8266_RTOS/user/Makefile
+++ b/examples/ESP8266_RTOS/user/Makefile
@@ -24,8 +24,8 @@ endif
 #   for a subtree within the makefile rooted therein
 #
 DEFINES += -DCS_PLATFORM=3 \
-           -DMG_NO_BSD_SOCKETS \
-           -DMG_DISABLE_FILESYSTEM \
+           -DMG_NO_BSD_SOCKETS=1 \
+           -DMG_DISABLE_FILESYSTEM=1 \
            -DRTOS_SDK -DMG_LWIP -DLWIP_TIMEVAL_PRIVATE=0 \
            -DMG_INTERNAL=
 
diff --git a/examples/MSP432/ccs/MSP432_MG_hello/cs_dbg.h b/examples/MSP432/ccs/MSP432_MG_hello/cs_dbg.h
index 219ef4d4..813413d5 100644
--- a/examples/MSP432/ccs/MSP432_MG_hello/cs_dbg.h
+++ b/examples/MSP432/ccs/MSP432_MG_hello/cs_dbg.h
@@ -6,7 +6,7 @@
 #ifndef CS_COMMON_CS_DBG_H_
 #define CS_COMMON_CS_DBG_H_
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 #include <stdio.h>
 #endif
 
@@ -28,7 +28,7 @@ enum cs_log_level {
 
 void cs_log_set_level(enum cs_log_level level);
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 
 void cs_log_set_file(FILE *file);
 
diff --git a/examples/load_balancer/load_balancer.c b/examples/load_balancer/load_balancer.c
index 1dcbd42d..52760bdd 100644
--- a/examples/load_balancer/load_balancer.c
+++ b/examples/load_balancer/load_balancer.c
@@ -60,7 +60,7 @@ static int s_num_vhost_backends = 0, s_num_default_backends = 0;
 static int s_sig_num = 0;
 static int s_backend_keepalive = 0;
 static FILE *s_log_file = NULL;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 const char *s_ssl_cert = NULL;
 #endif
 
@@ -206,7 +206,7 @@ static void forward(struct conn_data *conn, struct http_message *hm,
   for (i = 0; i < MG_MAX_HTTP_HEADERS && hm->header_names[i].len > 0; i++) {
     struct mg_str hn = hm->header_names[i];
     struct mg_str hv = hm->header_values[i];
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
     /*
      * If we terminate SSL and backend redirects to local HTTP port,
      * strip protocol to let client use HTTPS.
@@ -598,7 +598,7 @@ int main(int argc, char *argv[]) {
       vhost = NULL;
       redirect = 0;
       i += 2;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
     } else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
       s_ssl_cert = argv[++i];
 #endif
diff --git a/examples/restful_server/restful_server.c b/examples/restful_server/restful_server.c
index b3d6fd63..9419755a 100644
--- a/examples/restful_server/restful_server.c
+++ b/examples/restful_server/restful_server.c
@@ -53,7 +53,7 @@ int main(int argc, char *argv[]) {
   int i;
   char *cp;
   const char *err_str;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   const char *ssl_cert = NULL;
 #endif
 
@@ -75,7 +75,7 @@ int main(int argc, char *argv[]) {
       s_http_port = argv[++i];
     } else if (strcmp(argv[i], "-a") == 0 && i + 1 < argc) {
       s_http_server_opts.auth_domain = argv[++i];
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
     } else if (strcmp(argv[i], "-j") == 0 && i + 1 < argc) {
       const char *init_file = argv[++i];
       mg_enable_javascript(&mgr, v7_create(), init_file);
@@ -86,11 +86,11 @@ int main(int argc, char *argv[]) {
       s_http_server_opts.per_directory_auth_file = argv[++i];
     } else if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) {
       s_http_server_opts.url_rewrites = argv[++i];
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
     } else if (strcmp(argv[i], "-i") == 0 && i + 1 < argc) {
       s_http_server_opts.cgi_interpreter = argv[++i];
 #endif
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
     } else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
       ssl_cert = argv[++i];
 #endif
@@ -103,7 +103,7 @@ int main(int argc, char *argv[]) {
   /* Set HTTP server options */
   memset(&bind_opts, 0, sizeof(bind_opts));
   bind_opts.error_string = &err_str;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   if (ssl_cert != NULL) {
     bind_opts.ssl_cert = ssl_cert;
   }
diff --git a/examples/simplest_web_server_ssl/simplest_web_server_ssl.c b/examples/simplest_web_server_ssl/simplest_web_server_ssl.c
index 658935ab..d96faf05 100644
--- a/examples/simplest_web_server_ssl/simplest_web_server_ssl.c
+++ b/examples/simplest_web_server_ssl/simplest_web_server_ssl.c
@@ -3,7 +3,7 @@
  * All rights reserved
  */
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 /*
  * This example starts an SSL web server on https://localhost:8443/
  *
diff --git a/mongoose.c b/mongoose.c
index 2d03840f..7efbf2bc 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -74,7 +74,7 @@ MG_INTERNAL void mg_remove_conn(struct mg_connection *c);
 MG_INTERNAL struct mg_connection *mg_create_connection(
     struct mg_mgr *mgr, mg_event_handler_t callback,
     struct mg_add_sock_opts opts);
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 MG_INTERNAL int mg_uri_to_local_path(struct http_message *hm,
                                      const struct mg_serve_http_opts *opts,
                                      char **local_path,
@@ -100,7 +100,7 @@ MG_INTERNAL size_t mg_handle_chunked(struct mg_connection *nc,
                                      struct http_message *hm, char *buf,
                                      size_t blen);
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 MG_INTERNAL time_t mg_parse_date_string(const char *datetime);
 MG_INTERNAL int mg_is_not_modified(struct http_message *hm, cs_stat_t *st);
 #endif
@@ -110,7 +110,7 @@ struct ctl_msg {
   char message[MG_CTL_MSG_MESSAGE_SIZE];
 };
 
-#ifndef MG_DISABLE_MQTT
+#if !MG_DISABLE_MQTT
 struct mg_mqtt_message;
 MG_INTERNAL int parse_mqtt(struct mbuf *io, struct mg_mqtt_message *mm);
 #endif
@@ -136,6 +136,18 @@ extern void *(*test_calloc)(size_t count, size_t size);
 #define CS_COMMON_CS_DBG_H_
 
 #ifndef CS_DISABLE_STDIO
+#define CS_DISABLE_STDIO 0
+#endif
+
+#ifndef CS_ENABLE_DEBUG
+#define CS_ENABLE_DEBUG 0
+#endif
+
+#ifndef CS_LOG_TS_DIFF
+#define CS_LOG_TS_DIFF 0
+#endif
+
+#if !CS_DISABLE_STDIO
 #include <stdio.h>
 #endif
 
@@ -157,7 +169,7 @@ enum cs_log_level {
 
 void cs_log_set_level(enum cs_log_level level);
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 
 void cs_log_set_file(FILE *file);
 
@@ -213,13 +225,13 @@ void cs_log_printf(const char *fmt, ...);
 /* Amalgamated: #include "common/cs_time.h" */
 
 enum cs_log_level cs_log_level =
-#ifdef CS_ENABLE_DEBUG
+#if CS_ENABLE_DEBUG
     LL_VERBOSE_DEBUG;
 #else
     LL_ERROR;
 #endif
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 
 FILE *cs_log_file = NULL;
 
@@ -256,7 +268,7 @@ void cs_log_set_file(FILE *file) {
 
 void cs_log_set_level(enum cs_log_level level) {
   cs_log_level = level;
-#if defined(CS_LOG_TS_DIFF) && !defined(CS_DISABLE_STDIO)
+#if CS_LOG_TS_DIFF && !CS_DISABLE_STDIO
   cs_log_ts = cs_time();
 #endif
 }
@@ -271,8 +283,11 @@ void cs_log_set_level(enum cs_log_level level) {
 #ifndef EXCLUDE_COMMON
 
 /* Amalgamated: #include "common/base64.h" */
+
 #include <string.h>
 
+/* Amalgamated: #include "common/cs_dbg.h" */
+
 /* ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/ */
 
 #define NUM_UPPERCASES ('Z' - 'A' + 1)
@@ -386,7 +401,7 @@ void cs_base64_encode(const unsigned char *src, int src_len, char *dst) {
 #undef BASE64_OUT
 #undef BASE64_FLUSH
 
-#ifndef CS_DISABLE_STDIO
+#if !CS_DISABLE_STDIO
 #define BASE64_OUT(ch)      \
   do {                      \
     fprintf(f, "%c", (ch)); \
@@ -478,7 +493,11 @@ int cs_base64_decode(const unsigned char *s, int len, char *dst) {
 extern "C" {
 #endif /* __cplusplus */
 
-#ifdef CS_ENABLE_SPIFFS
+#ifndef CS_ENABLE_SPIFFS
+#define CS_ENABLE_SPIFFS 0
+#endif
+
+#if CS_ENABLE_SPIFFS
 
 #include <spiffs.h>
 
@@ -507,7 +526,7 @@ typedef struct DIR {
 } DIR;
 #endif
 
-#if defined(_WIN32) || defined(CS_ENABLE_SPIFFS)
+#if defined(_WIN32) || CS_ENABLE_SPIFFS
 DIR *opendir(const char *dir_name);
 int closedir(DIR *dir);
 struct dirent *readdir(DIR *dir);
@@ -610,7 +629,7 @@ struct dirent *readdir(DIR *dir) {
 }
 #endif
 
-#ifdef CS_ENABLE_SPIFFS
+#if CS_ENABLE_SPIFFS
 
 DIR *opendir(const char *dir_name) {
   DIR *dir = NULL;
@@ -734,11 +753,10 @@ double cs_time(void) {
  * will fill a supplied 16-byte array with the digest.
  */
 
-#if !defined(DISABLE_MD5) && !defined(EXCLUDE_COMMON)
-
 /* Amalgamated: #include "common/md5.h" */
 
-#ifndef CS_ENABLE_NATIVE_MD5
+#if !DISABLE_MD5 && !defined(EXCLUDE_COMMON)
+
 static void byteReverse(unsigned char *buf, unsigned longs) {
 /* Forrest: MD5 expect LITTLE_ENDIAN, swap if BIG_ENDIAN */
 #if BYTE_ORDER == BIG_ENDIAN
@@ -922,7 +940,6 @@ void MD5_Final(unsigned char digest[16], MD5_CTX *ctx) {
   memcpy(digest, ctx->buf, 16);
   memset((char *) ctx, 0, sizeof(*ctx));
 }
-#endif /* CS_ENABLE_NATIVE_MD5 */
 
 /*
  * Stringify binary data. Output buffer size must be 2 * size_of_input + 1
@@ -1131,7 +1148,7 @@ int mg_strcmp(const struct mg_str str1, const struct mg_str str2) {
 /* Copyright(c) By Steve Reid <steve@edmweb.com> */
 /* 100% Public Domain */
 
-#if !defined(DISABLE_SHA1) && !defined(EXCLUDE_COMMON)
+#if !DISABLE_SHA1 && !defined(EXCLUDE_COMMON)
 
 /* Amalgamated: #include "common/sha1.h" */
 
@@ -1392,6 +1409,10 @@ void cs_hmac_sha1(const unsigned char *key, size_t keylen,
 /* Amalgamated: #include "common/platform.h" */
 /* Amalgamated: #include "common/str_util.h" */
 
+#ifndef C_DISABLE_BUILTIN_SNPRINTF
+#define C_DISABLE_BUILTIN_SNPRINTF 0
+#endif
+
 size_t c_strnlen(const char *s, size_t maxlen) {
   size_t l = 0;
   for (; l < maxlen && s[l] != '\0'; l++) {
@@ -1407,7 +1428,7 @@ size_t c_strnlen(const char *s, size_t maxlen) {
 
 #define C_SNPRINTF_FLAG_ZERO 1
 
-#ifdef C_DISABLE_BUILTIN_SNPRINTF
+#if C_DISABLE_BUILTIN_SNPRINTF
 int c_vsnprintf(char *buf, size_t buf_size, const char *fmt, va_list ap) {
   return vsnprintf(buf, buf_size, fmt, ap);
 }
@@ -1729,7 +1750,7 @@ MG_INTERNAL void mg_call(struct mg_connection *nc,
        ev_handler == nc->handler ? "user" : "proto", ev, ev_data, nc->flags,
        (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len));
 
-#if !defined(NO_LIBC) && !defined(MG_DISABLE_HEXDUMP)
+#if !defined(NO_LIBC) && !MG_DISABLE_HEXDUMP
   /* LCOV_EXCL_START */
   if (nc->mgr->hexdump_file != NULL && ev != MG_EV_POLL &&
       ev != MG_EV_SEND /* handled separately */) {
@@ -1786,7 +1807,7 @@ static void mg_destroy_conn(struct mg_connection *conn, int destroy_if) {
   if (conn->proto_data != NULL && conn->proto_data_destructor != NULL) {
     conn->proto_data_destructor(conn->proto_data);
   }
-#if defined(MG_ENABLE_SSL) && !defined(MG_SOCKET_SIMPLELINK)
+#if MG_ENABLE_SSL && !defined(MG_SOCKET_SIMPLELINK)
   if (conn->ssl != NULL) SSL_free(conn->ssl);
   if (conn->ssl_ctx != NULL) SSL_CTX_free(conn->ssl_ctx);
 #endif
@@ -1807,7 +1828,7 @@ void mg_close_conn(struct mg_connection *conn) {
 
 void mg_mgr_init(struct mg_mgr *m, void *user_data) {
   memset(m, 0, sizeof(*m));
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   m->ctl[0] = m->ctl[1] = INVALID_SOCKET;
 #endif
   m->user_data = user_data;
@@ -1823,7 +1844,7 @@ void mg_mgr_init(struct mg_mgr *m, void *user_data) {
   signal(SIGPIPE, SIG_IGN);
 #endif
 
-#if defined(MG_ENABLE_SSL) && !defined(MG_SOCKET_SIMPLELINK)
+#if MG_ENABLE_SSL && !defined(MG_SOCKET_SIMPLELINK)
   {
     static int init_done;
     if (!init_done) {
@@ -1838,7 +1859,7 @@ void mg_mgr_init(struct mg_mgr *m, void *user_data) {
   DBG(("init mgr=%p", m));
 }
 
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
 static enum v7_err mg_send_js(struct v7 *v7, v7_val_t *res) {
   v7_val_t arg0 = v7_arg(v7, 0);
   v7_val_t arg1 = v7_arg(v7, 1);
@@ -1872,7 +1893,7 @@ void mg_mgr_free(struct mg_mgr *m) {
   /* Do one last poll, see https://github.com/cesanta/mongoose/issues/286 */
   mg_mgr_poll(m, 0);
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   if (m->ctl[0] != INVALID_SOCKET) closesocket(m->ctl[0]);
   if (m->ctl[1] != INVALID_SOCKET) closesocket(m->ctl[1]);
   m->ctl[0] = m->ctl[1] = INVALID_SOCKET;
@@ -1909,10 +1930,10 @@ int mg_printf(struct mg_connection *conn, const char *fmt, ...) {
   return len;
 }
 
-#ifndef MG_DISABLE_SYNC_RESOLVER
+#if !MG_DISABLE_SYNC_RESOLVER
 /* TODO(lsm): use non-blocking resolver */
 static int mg_resolve2(const char *host, struct in_addr *ina) {
-#ifdef MG_ENABLE_GETADDRINFO
+#if MG_ENABLE_GETADDRINFO
   int rv = 0;
   struct addrinfo hints, *servinfo, *p;
   struct sockaddr_in *h = NULL;
@@ -2003,7 +2024,7 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
                                  int *proto, char *host, size_t host_len) {
   unsigned int a, b, c, d, port = 0;
   int ch, len = 0;
-#ifdef MG_ENABLE_IPV6
+#if MG_ENABLE_IPV6
   char buf[100];
 #endif
 
@@ -2029,14 +2050,14 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
     sa->sin.sin_addr.s_addr =
         htonl(((uint32_t) a << 24) | ((uint32_t) b << 16) | c << 8 | d);
     sa->sin.sin_port = htons((uint16_t) port);
-#ifdef MG_ENABLE_IPV6
+#if MG_ENABLE_IPV6
   } else if (sscanf(str, "[%99[^]]]:%u%n", buf, &port, &len) == 2 &&
              inet_pton(AF_INET6, buf, &sa->sin6.sin6_addr)) {
     /* IPv6 address, e.g. [3ffe:2a00:100:7031::1]:8080 */
     sa->sin6.sin6_family = AF_INET6;
     sa->sin.sin_port = htons((uint16_t) port);
 #endif
-#ifndef MG_DISABLE_RESOLVER
+#if !MG_DISABLE_RESOLVER
   } else if (strlen(str) < host_len &&
              sscanf(str, "%[^ :]:%u%n", host, &port, &len) == 2) {
     sa->sin.sin_port = htons((uint16_t) port);
@@ -2051,7 +2072,7 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
         return 0;
       }
 
-#ifndef MG_DISABLE_SYNC_RESOLVER
+#if !MG_DISABLE_SYNC_RESOLVER
       if (!mg_resolve2(host, &sa->sin.sin_addr)) {
         return -1;
       }
@@ -2072,7 +2093,7 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
   return port < 0xffffUL && (ch == '\0' || ch == ',' || isspace(ch)) ? len : -1;
 }
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 
 #ifndef MG_SOCKET_SIMPLELINK
 /*
@@ -2080,7 +2101,7 @@ MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa,
  * https://github.com/cesanta/mongoose/blob/master/scripts/generate_ssl_certificates.sh
  */
 
-#ifndef MG_DISABLE_PFS
+#if !MG_DISABLE_PFS
 /*
  * Cipher suite options used for TLS negotiation.
  * https://wiki.mozilla.org/Security/Server_Side_TLS#Recommended_configurations
@@ -2159,7 +2180,7 @@ static int mg_use_cert(SSL_CTX *ctx, const char *cert, const char *key) {
              SSL_CTX_use_PrivateKey_file(ctx, key, 1) == 0) {
     return -2;
   } else {
-#ifndef MG_DISABLE_PFS
+#if !MG_DISABLE_PFS
     BIO *bio = NULL;
     DH *dh = NULL;
 
@@ -2242,7 +2263,7 @@ static const char *mg_set_ssl2(struct mg_connection *nc, const char *cert,
     result = "SSL_new() failed";
   }
 
-#ifndef MG_DISABLE_PFS
+#if !MG_DISABLE_PFS
   SSL_CTX_set_cipher_list(nc->ssl_ctx, mg_s_cipher_list);
 #endif
 
@@ -2293,7 +2314,7 @@ void mg_send(struct mg_connection *nc, const void *buf, int len) {
   } else {
     mg_if_tcp_send(nc, buf, len);
   }
-#if !defined(NO_LIBC) && !defined(MG_DISABLE_HEXDUMP)
+#if !defined(NO_LIBC) && !MG_DISABLE_HEXDUMP
   if (nc->mgr && nc->mgr->hexdump_file != NULL) {
     mg_hexdump_connection(nc, nc->mgr->hexdump_file, buf, len, MG_EV_SEND);
   }
@@ -2411,7 +2432,7 @@ void mg_if_connect_cb(struct mg_connection *nc, int err) {
   mg_call(nc, NULL, MG_EV_CONNECT, &err);
 }
 
-#ifndef MG_DISABLE_RESOLVER
+#if !MG_DISABLE_RESOLVER
 /*
  * Callback for the async resolver on mg_connect_opt() call.
  * Main task of this function is to trigger MG_EV_CONNECT event with
@@ -2465,7 +2486,7 @@ struct mg_connection *mg_connect(struct mg_mgr *mgr, const char *address,
   return mg_connect_opt(mgr, address, callback, opts);
 }
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 static void mg_set_ssl_server_name(struct mg_connection *nc,
                                    const char *server_name) {
   DBG(("%p '%s'", nc, server_name));
@@ -2507,7 +2528,7 @@ struct mg_connection *mg_connect_opt(struct mg_mgr *mgr, const char *address,
   nc->flags |= (proto == SOCK_DGRAM) ? MG_F_UDP : 0;
   nc->user_data = opts.user_data;
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   LOG(LL_DEBUG,
       ("%p %s %s,%s,%s", nc, address, (opts.ssl_cert ? opts.ssl_cert : "-"),
        (opts.ssl_key ? opts.ssl_key : "-"),
@@ -2529,7 +2550,7 @@ struct mg_connection *mg_connect_opt(struct mg_mgr *mgr, const char *address,
 #endif /* MG_ENABLE_SSL */
 
   if (rc == 0) {
-#ifndef MG_DISABLE_RESOLVER
+#if !MG_DISABLE_RESOLVER
     /*
      * DNS resolution is required for host.
      * mg_parse_address() fills port in nc->sa, which we pass to resolve_cb()
@@ -2546,7 +2567,7 @@ struct mg_connection *mg_connect_opt(struct mg_mgr *mgr, const char *address,
     }
     nc->priv_2 = dns_conn;
     nc->flags |= MG_F_RESOLVING;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
     if (opts.ssl_ca_cert != NULL && opts.ssl_server_name == NULL) {
       mg_set_ssl_server_name(nc, host);
     }
@@ -2595,7 +2616,7 @@ struct mg_connection *mg_bind_opt(struct mg_mgr *mgr, const char *address,
   nc->flags |= MG_F_LISTENING;
   if (proto == SOCK_DGRAM) nc->flags |= MG_F_UDP;
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   DBG(("%p %s %s %s %s", nc, address, (opts.ssl_cert ? opts.ssl_cert : ""),
        (opts.ssl_key ? opts.ssl_key : ""),
        (opts.ssl_ca_cert ? opts.ssl_ca_cert : "")));
@@ -2631,7 +2652,7 @@ struct mg_connection *mg_next(struct mg_mgr *s, struct mg_connection *conn) {
   return conn == NULL ? s->active_connections : conn->next;
 }
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
 void mg_broadcast(struct mg_mgr *mgr, mg_event_handler_t cb, void *data,
                   size_t len) {
   struct ctl_msg ctl_msg;
@@ -2752,7 +2773,7 @@ double mg_time(void) {
  * All rights reserved
  */
 
-#if !defined(MG_DISABLE_SOCKET_IF) && !defined(MG_SOCKET_SIMPLELINK)
+#if !MG_DISABLE_SOCKET_IF && !defined(MG_SOCKET_SIMPLELINK)
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/util.h" */
@@ -2762,7 +2783,7 @@ double mg_time(void) {
 
 static sock_t mg_open_listening_socket(union socket_address *sa, int type,
                                        int proto);
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
 static void mg_ssl_begin(struct mg_connection *nc);
 static int mg_ssl_err(struct mg_connection *conn, int res);
 #endif
@@ -2881,7 +2902,7 @@ static int mg_accept_conn(struct mg_connection *lc) {
   DBG(("%p conn from %s:%d", nc, inet_ntoa(sa.sin.sin_addr),
        ntohs(sa.sin.sin_port)));
   mg_sock_set(nc, sock);
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
   if (lc->ssl_ctx != NULL) {
     nc->ssl = SSL_new(lc->ssl_ctx);
     if (nc->ssl == NULL || SSL_set_fd(nc->ssl, sock) != 1) {
@@ -2966,7 +2987,7 @@ static void mg_write_to_socket(struct mg_connection *nc) {
     return;
   }
 
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
   if (nc->ssl != NULL) {
     if (nc->flags & MG_F_SSL_HANDSHAKE_DONE) {
       n = SSL_write(nc->ssl, io->buf, io->len);
@@ -3019,7 +3040,7 @@ static void mg_handle_tcp_read(struct mg_connection *conn) {
     return;
   }
 
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
   if (conn->ssl != NULL) {
     if (conn->flags & MG_F_SSL_HANDSHAKE_DONE) {
       /* SSL library may have more bytes ready to read then we ask to read.
@@ -3087,7 +3108,7 @@ static void mg_handle_udp_read(struct mg_connection *nc) {
   mg_if_recv_udp_cb(nc, buf, n, &sa, sa_len);
 }
 
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
 static int mg_ssl_err(struct mg_connection *conn, int res) {
   int ssl_err = SSL_get_error(conn->ssl, res);
   DBG(("%p %d -> %d", conn, res, ssl_err));
@@ -3130,7 +3151,7 @@ static void mg_ssl_begin(struct mg_connection *nc) {
     }
   }
 }
-#endif /* defined(MG_ENABLE_SSL) */
+#endif /* MG_ENABLE_SSL */
 
 #define _MG_F_FD_CAN_READ 1
 #define _MG_F_FD_CAN_WRITE 1 << 1
@@ -3156,7 +3177,7 @@ void mg_mgr_handle_conn(struct mg_connection *nc, int fd_flags, double now) {
        */
       err = nc->err;
 #endif
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
       if (nc->ssl != NULL && err == 0) {
         SSL_set_fd(nc->ssl, nc->sock);
         mg_ssl_begin(nc);
@@ -3203,7 +3224,7 @@ void mg_mgr_handle_conn(struct mg_connection *nc, int fd_flags, double now) {
        (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len));
 }
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
 static void mg_mgr_handle_ctl_sock(struct mg_mgr *mgr) {
   struct ctl_msg ctl_msg;
   int len =
@@ -3231,7 +3252,7 @@ void mg_sock_set(struct mg_connection *nc, sock_t sock) {
 void mg_ev_mgr_init(struct mg_mgr *mgr) {
   (void) mgr;
   DBG(("%p using select()", mgr));
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   do {
     mg_socketpair(mgr->ctl, SOCK_DGRAM);
   } while (mgr->ctl[0] == INVALID_SOCKET);
@@ -3278,7 +3299,7 @@ time_t mg_mgr_poll(struct mg_mgr *mgr, int timeout_ms) {
   FD_ZERO(&read_set);
   FD_ZERO(&write_set);
   FD_ZERO(&err_set);
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   mg_add_to_set(mgr->ctl[1], &read_set, &max_fd);
 #endif
 
@@ -3348,7 +3369,7 @@ time_t mg_mgr_poll(struct mg_mgr *mgr, int timeout_ms) {
   DBG(("select @ %ld num_ev=%d of %d, timeout=%d", (long) now, num_ev, num_fds,
        timeout_ms));
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   if (num_ev > 0 && mgr->ctl[1] != INVALID_SOCKET &&
       FD_ISSET(mgr->ctl[1], &read_set)) {
     mg_mgr_handle_ctl_sock(mgr);
@@ -3386,7 +3407,7 @@ time_t mg_mgr_poll(struct mg_mgr *mgr, int timeout_ms) {
   return (time_t) now;
 }
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
 int mg_socketpair(sock_t sp[2], int sock_type) {
   union socket_address sa;
   sock_t sock;
@@ -3452,7 +3473,7 @@ void mg_if_get_conn_addr(struct mg_connection *nc, int remote,
   mg_sock_get_addr(nc->sock, remote, sa);
 }
 
-#endif /* !defined(MG_DISABLE_SOCKET_IF) && !defined(MG_SOCKET_SIMPLELINK) */
+#endif /* !MG_DISABLE_SOCKET_IF && !defined(MG_SOCKET_SIMPLELINK) */
 #ifdef MG_MODULE_LINES
 #line 1 "mongoose/src/multithreading.c"
 #endif
@@ -3464,7 +3485,7 @@ void mg_if_get_conn_addr(struct mg_connection *nc, int remote,
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/util.h" */
 
-#ifdef MG_ENABLE_THREADS
+#if MG_ENABLE_THREADS
 
 static void multithreaded_ev_handler(struct mg_connection *c, int ev, void *p);
 
@@ -3770,19 +3791,19 @@ int mg_normalize_uri_path(const struct mg_str *in, struct mg_str *out) {
  * All rights reserved
  */
 
-#ifndef MG_DISABLE_HTTP
+#if !MG_DISABLE_HTTP
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/util.h" */
 /* Amalgamated: #include "common/sha1.h" */
 /* Amalgamated: #include "common/md5.h" */
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 #define MG_WS_NO_HOST_HEADER_MAGIC ((char *) 0x1)
 #endif
 
 /* CGI requires socketpair. */
-#if defined(MG_DISABLE_SOCKETPAIR) && !defined(MG_DISABLE_CGI)
+#if MG_DISABLE_SOCKETPAIR && !MG_DISABLE_CGI
 #define MG_DISABLE_CGI 1
 #endif
 
@@ -3835,13 +3856,13 @@ struct mg_http_multipart_stream {
 };
 
 struct mg_http_proto_data {
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
   struct mg_http_proto_data_file file;
 #endif
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
   struct mg_http_proto_data_cgi cgi;
 #endif
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
   struct mg_http_multipart_stream mp_stream;
 #endif
   struct mg_http_proto_data_chuncked chunk;
@@ -3861,7 +3882,7 @@ static struct mg_http_proto_data *mg_http_get_proto_data(
   return (struct mg_http_proto_data *) c->proto_data;
 }
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
 static void mg_http_free_proto_data_mp_stream(
     struct mg_http_multipart_stream *mp) {
   free((void *) mp->boundary);
@@ -3871,7 +3892,7 @@ static void mg_http_free_proto_data_mp_stream(
 }
 #endif
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 static void mg_http_free_proto_data_file(struct mg_http_proto_data_file *d) {
   if (d != NULL) {
     if (d->fp != NULL) {
@@ -3882,7 +3903,7 @@ static void mg_http_free_proto_data_file(struct mg_http_proto_data_file *d) {
 }
 #endif
 
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
 static void mg_http_free_proto_data_cgi(struct mg_http_proto_data_cgi *d) {
   if (d != NULL) {
     if (d->cgi_nc != NULL) d->cgi_nc->flags |= MG_F_CLOSE_IMMEDIATELY;
@@ -3906,13 +3927,13 @@ static void mg_http_free_proto_data_endpoints(struct mg_http_endpoint **ep) {
 
 static void mg_http_conn_destructor(void *proto_data) {
   struct mg_http_proto_data *pd = (struct mg_http_proto_data *) proto_data;
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
   mg_http_free_proto_data_file(&pd->file);
 #endif
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
   mg_http_free_proto_data_cgi(&pd->cgi);
 #endif
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
   mg_http_free_proto_data_mp_stream(&pd->mp_stream);
 #endif
   mg_http_free_proto_data_endpoints(&pd->endpoints);
@@ -3937,7 +3958,7 @@ struct mg_cgi_env_block {
   int nvars;                               /* Number of variables in envp[] */
 };
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 
 #define MIME_ENTRY(_ext, _type) \
   { _ext, sizeof(_ext) - 1, _type }
@@ -3996,7 +4017,7 @@ static const struct {
     MIME_ENTRY("bmp", "image/bmp"),
     {NULL, 0, NULL}};
 
-#ifndef MG_DISABLE_DAV
+#if !MG_DISABLE_DAV
 static int mg_mkdir(const char *path, uint32_t mode) {
 #ifndef _WIN32
   return mkdir(path, mode);
@@ -4178,7 +4199,7 @@ struct mg_str *mg_get_http_header(struct http_message *hm, const char *name) {
   return NULL;
 }
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 
 static int mg_is_ws_fragment(unsigned char flags) {
   return (flags & 0x80) == 0 || (flags & 0x0f) == 0;
@@ -4304,7 +4325,7 @@ static uint32_t mg_ws_random_mask(void) {
  * mongoose use cases and thus can be disabled, e.g. when porting to a platform
  * that lacks rand().
  */
-#ifdef MG_DISABLE_WS_RANDOM_MASK
+#if MG_DISABLE_WS_RANDOM_MASK
   mask = 0xefbeadde; /* generated with a random number generator, I swear */
 #else
   if (sizeof(long) >= 4) {
@@ -4475,7 +4496,7 @@ static void mg_ws_handshake(struct mg_connection *nc,
 
 #endif /* MG_DISABLE_HTTP_WEBSOCKET */
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 static void mg_http_transfer_file_data(struct mg_connection *nc) {
   struct mg_http_proto_data *pd = mg_http_get_proto_data(nc);
   char buf[MG_MAX_HTTP_SEND_MBUF];
@@ -4514,7 +4535,7 @@ static void mg_http_transfer_file_data(struct mg_connection *nc) {
       mg_http_free_proto_data_file(&pd->file);
     }
   }
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
   else if (pd->cgi.cgi_nc != NULL) {
     /* This is POST data that needs to be forwarded to the CGI process */
     if (pd->cgi.cgi_nc != NULL) {
@@ -4664,7 +4685,7 @@ static void mg_http_call_endpoint_handler(struct mg_connection *nc, int ev,
           hm);
 }
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
 static void mg_http_multipart_continue(struct mg_connection *nc);
 
 static void mg_http_multipart_begin(struct mg_connection *nc,
@@ -4697,11 +4718,11 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
   struct mbuf *io = &nc->recv_mbuf;
   int req_len;
   const int is_req = (nc->listener != NULL);
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
   struct mg_str *vec;
 #endif
   if (ev == MG_EV_CLOSE) {
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
     if (pd->mp_stream.boundary != NULL) {
       /*
        * Multipart message is in progress, but we get close
@@ -4729,7 +4750,7 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
     }
   }
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
   if (pd->file.fp != NULL) {
     mg_http_transfer_file_data(nc);
   }
@@ -4740,7 +4761,7 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
   if (ev == MG_EV_RECV) {
     struct mg_str *s;
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
     if (pd->mp_stream.boundary != NULL) {
       mg_http_multipart_continue(nc);
       return;
@@ -4755,7 +4776,7 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
       mg_handle_chunked(nc, hm, io->buf + req_len, io->len - req_len);
     }
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
     if (req_len > 0 && (s = mg_get_http_header(hm, "Content-Type")) != NULL &&
         s->len >= 9 && strncmp(s->p, "multipart", 9) == 0) {
       mg_http_multipart_begin(nc, hm, req_len);
@@ -4772,7 +4793,7 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
     } else if (req_len == 0) {
       /* Do nothing, request is not yet fully buffered */
     }
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
     else if (nc->listener == NULL &&
              mg_get_http_header(hm, "Sec-WebSocket-Accept")) {
       /* We're websocket client, got handshake response from server. */
@@ -4805,7 +4826,7 @@ void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) {
 
 /* Whole HTTP message is fully buffered, call event handler */
 
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
       v7_val_t v1, v2, headers, req, args, res;
       struct v7 *v7 = nc->mgr->v7;
       const char *ev_name = trigger_ev == MG_EV_HTTP_REPLY ? "onsnd" : "onrcv";
@@ -4865,7 +4886,7 @@ static size_t mg_get_line_len(const char *buf, size_t buf_len) {
   return len == buf_len ? 0 : len + 1;
 }
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
 static void mg_http_multipart_begin(struct mg_connection *nc,
                                     struct http_message *hm, int req_len) {
   struct mg_http_proto_data *pd = mg_http_get_proto_data(nc);
@@ -5254,7 +5275,7 @@ void mg_set_protocol_http_websocket(struct mg_connection *nc) {
   nc->proto_handler = mg_http_handler;
 }
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 
 void mg_send_websocket_handshake2(struct mg_connection *nc, const char *path,
                                   const char *host, const char *protocol,
@@ -5373,7 +5394,7 @@ void mg_send_head(struct mg_connection *c, int status_code,
   mg_send(c, "\r\n", 2);
 }
 
-#ifdef MG_DISABLE_FILESYSTEM
+#if MG_DISABLE_FILESYSTEM
 void mg_serve_http(struct mg_connection *nc, struct http_message *hm,
                    struct mg_serve_http_opts opts) {
   mg_send_head(nc, 501, 0, NULL);
@@ -5388,7 +5409,7 @@ static void mg_http_send_error(struct mg_connection *nc, int code,
   mg_send(nc, reason, strlen(reason));
   nc->flags |= MG_F_SEND_AND_CLOSE;
 }
-#ifndef MG_DISABLE_SSI
+#if !MG_DISABLE_SSI
 static void mg_send_ssi_file(struct mg_connection *nc, struct http_message *hm,
                              const char *path, FILE *fp, int include_level,
                              const struct mg_serve_http_opts *opts);
@@ -5447,7 +5468,7 @@ static void mg_do_ssi_include(struct mg_connection *nc, struct http_message *hm,
   }
 }
 
-#ifndef MG_DISABLE_POPEN
+#if !MG_DISABLE_POPEN
 static void do_ssi_exec(struct mg_connection *nc, char *tag) {
   char cmd[BUFSIZ];
   FILE *fp;
@@ -5473,7 +5494,7 @@ static void mg_send_ssi_file(struct mg_connection *nc, struct http_message *hm,
   static const struct mg_str btag = MG_MK_STR("<!--#");
   static const struct mg_str d_include = MG_MK_STR("include");
   static const struct mg_str d_call = MG_MK_STR("call");
-#ifndef MG_DISABLE_POPEN
+#if !MG_DISABLE_POPEN
   static const struct mg_str d_exec = MG_MK_STR("exec");
 #endif
   char buf[BUFSIZ], *p = buf + btag.len; /* p points to SSI directive */
@@ -5509,7 +5530,7 @@ static void mg_send_ssi_file(struct mg_connection *nc, struct http_message *hm,
         mg_call(nc, NULL, MG_EV_SSI_CALL,
                 (void *) cctx.arg.p); /* NUL added above */
         mg_call(nc, NULL, MG_EV_SSI_CALL_CTX, &cctx);
-#ifndef MG_DISABLE_POPEN
+#if !MG_DISABLE_POPEN
       } else if (memcmp(p, d_exec.p, d_exec.len) == 0) {
         do_ssi_exec(nc, p + d_exec.len + 1);
 #endif
@@ -5663,7 +5684,7 @@ void mg_http_serve_file(struct mg_connection *nc, struct http_message *hm,
       }
     }
 
-#ifndef MG_DISABLE_HTTP_KEEP_ALIVE
+#if !MG_DISABLE_HTTP_KEEP_ALIVE
     {
       struct mg_str *conn_hdr = mg_get_http_header(hm, "Connection");
       if (conn_hdr != NULL) {
@@ -5876,7 +5897,7 @@ int mg_http_parse_header(struct mg_str *hdr, const char *var_name, char *buf,
   return len;
 }
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 static int mg_is_file_hidden(const char *path,
                              const struct mg_serve_http_opts *opts,
                              int exclude_specials) {
@@ -5895,7 +5916,7 @@ static int mg_is_file_hidden(const char *path,
          (p2 != NULL && mg_match_prefix(p2, strlen(p2), path) > 0);
 }
 
-#ifndef MG_DISABLE_HTTP_DIGEST_AUTH
+#if !MG_DISABLE_HTTP_DIGEST_AUTH
 static void mg_mkmd5resp(const char *method, size_t method_len, const char *uri,
                          size_t uri_len, const char *ha1, size_t ha1_len,
                          const char *nonce, size_t nonce_len, const char *nc,
@@ -6038,7 +6059,7 @@ static int mg_is_authorized(struct http_message *hm, const char *path,
 }
 #endif
 
-#ifndef MG_DISABLE_DIRECTORY_LISTING
+#if !MG_DISABLE_DIRECTORY_LISTING
 static size_t mg_url_encode(const char *src, size_t s_len, char *dst,
                             size_t dst_len) {
   static const char *dont_escape = "._-$,;~()/";
@@ -6193,7 +6214,7 @@ static void mg_send_directory_listing(struct mg_connection *nc, const char *dir,
 }
 #endif /* MG_DISABLE_DIRECTORY_LISTING */
 
-#ifndef MG_DISABLE_DAV
+#if !MG_DISABLE_DAV
 static void mg_print_props(struct mg_connection *nc, const char *name,
                            cs_stat_t *stp) {
   char mtime[64], buf[MAX_PATH_SIZE * 3];
@@ -6246,7 +6267,7 @@ static void mg_handle_propfind(struct mg_connection *nc, const char *path,
   }
 }
 
-#ifdef MG_ENABLE_FAKE_DAVLOCK
+#if MG_ENABLE_FAKE_DAVLOCK
 /*
  * Windows explorer (probably there are another WebDav clients like it)
  * requires LOCK support in webdav. W/out this, it still works, but fails
@@ -6423,10 +6444,16 @@ static void mg_handle_put(struct mg_connection *nc, const char *path,
 #endif /* MG_DISABLE_DAV */
 
 static int mg_is_dav_request(const struct mg_str *s) {
-  static const char *methods[] = {"PUT", "DELETE", "MKCOL", "PROPFIND", "MOVE"
-#ifdef MG_ENABLE_FAKE_DAVLOCK
-                                  ,
-                                  "LOCK", "UNLOCK"
+  static const char *methods[] = {
+    "PUT",
+    "DELETE",
+    "MKCOL",
+    "PROPFIND",
+    "MOVE"
+#if MG_ENABLE_FAKE_DAVLOCK
+    ,
+    "LOCK",
+    "UNLOCK"
 #endif
   };
   size_t i;
@@ -6547,7 +6574,7 @@ MG_INTERNAL int mg_uri_to_local_path(struct http_message *hm,
     }
     /* If no rewrite rules matched, use DAV or regular document root. */
     if (root.p == NULL) {
-#ifndef MG_DISABLE_DAV
+#if !MG_DISABLE_DAV
       if (opts->dav_document_root != NULL && mg_is_dav_request(&hm->method)) {
         root.p = opts->dav_document_root;
         root.len = strlen(opts->dav_document_root);
@@ -6653,7 +6680,7 @@ out:
   return ok;
 }
 
-#ifndef MG_DISABLE_CGI
+#if !MG_DISABLE_CGI
 #ifdef _WIN32
 struct mg_threadparam {
   sock_t s;
@@ -6938,7 +6965,7 @@ static void mg_prepare_cgi_environment(struct mg_connection *nc,
     mg_addenv(blk, "PATH_TRANSLATED=%.*s", (int) path_info->len, path_info->p);
   }
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   mg_addenv(blk, "HTTPS=%s", nc->ssl != NULL ? "on" : "off");
 #else
   mg_addenv(blk, "HTTPS=off");
@@ -7173,7 +7200,7 @@ static void mg_http_send_digest_auth_request(struct mg_connection *c,
 static void mg_http_send_options(struct mg_connection *nc) {
   mg_printf(nc, "%s",
             "HTTP/1.1 200 OK\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS"
-#ifndef MG_DISABLE_DAV
+#if !MG_DISABLE_DAV
             ", MKCOL, PUT, DELETE, PROPFIND, MOVE\r\nDAV: 1,2"
 #endif
             "\r\n\r\n");
@@ -7231,7 +7258,7 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
                                opts->per_directory_auth_file, 0)) {
     mg_http_send_digest_auth_request(nc, opts->auth_domain);
   } else if (is_cgi) {
-#if !defined(MG_DISABLE_CGI)
+#if !MG_DISABLE_CGI
     mg_handle_cgi(nc, index_file ? index_file : path, path_info, hm, opts);
 #else
     mg_http_send_error(nc, 501, NULL);
@@ -7240,10 +7267,10 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
               mg_is_file_hidden(path, opts, 0 /* specials are ok */)) &&
              !mg_is_creation_request(hm)) {
     mg_http_send_error(nc, 404, NULL);
-#ifndef MG_DISABLE_DAV
+#if !MG_DISABLE_DAV
   } else if (!mg_vcmp(&hm->method, "PROPFIND")) {
     mg_handle_propfind(nc, path, &st, hm, opts);
-#ifndef MG_DISABLE_DAV_AUTH
+#if !MG_DISABLE_DAV_AUTH
   } else if (is_dav &&
              (opts->dav_auth_file == NULL ||
               (strcmp(opts->dav_auth_file, "-") != 0 &&
@@ -7259,7 +7286,7 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
     mg_handle_put(nc, path, hm);
   } else if (!mg_vcmp(&hm->method, "MOVE")) {
     mg_handle_move(nc, opts, path, hm);
-#ifdef MG_ENABLE_FAKE_DAVLOCK
+#if MG_ENABLE_FAKE_DAVLOCK
   } else if (!mg_vcmp(&hm->method, "LOCK")) {
     mg_handle_lock(nc, path);
 #endif
@@ -7267,7 +7294,7 @@ MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path,
   } else if (!mg_vcmp(&hm->method, "OPTIONS")) {
     mg_http_send_options(nc);
   } else if (is_directory && index_file == NULL) {
-#ifndef MG_DISABLE_DIRECTORY_LISTING
+#if !MG_DISABLE_DIRECTORY_LISTING
     if (strcmp(opts->enable_directory_listing, "yes") == 0) {
       mg_send_directory_listing(nc, path, hm, opts);
     } else {
@@ -7357,7 +7384,7 @@ static int mg_http_common_url_parse(const char *url, const char *schema,
   } else if (memcmp(url, schema_tls, strlen(schema_tls)) == 0) {
     url += strlen(schema_tls);
     *use_ssl = 1;
-#ifndef MG_ENABLE_SSL
+#if !MG_ENABLE_SSL
     return -1; /* SSL is not enabled, cannot do HTTPS URLs */
 #endif
   }
@@ -7412,7 +7439,7 @@ struct mg_connection *mg_connect_http_base(
 
   LOG(LL_DEBUG, ("%s use_ssl? %d", url, use_ssl));
   if (use_ssl) {
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
     /*
      * Schema requires SSL, but no SSL parameters were provided in opts.
      * In order to maintain backward compatibility, use a faux-SSL with no
@@ -7474,7 +7501,7 @@ struct mg_connection *mg_connect_http(struct mg_mgr *mgr,
                              post_data);
 }
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 struct mg_connection *mg_connect_ws_opt(struct mg_mgr *mgr,
                                         mg_event_handler_t ev_handler,
                                         struct mg_connect_opts opts,
@@ -7598,7 +7625,7 @@ int mg_casecmp(const char *s1, const char *s2) {
   return mg_ncasecmp(s1, s2, (size_t) ~0);
 }
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 int mg_stat(const char *path, cs_stat_t *st) {
 #ifdef _WIN32
   wchar_t wpath[MAX_PATH_SIZE];
@@ -7640,7 +7667,7 @@ int mg_base64_decode(const unsigned char *s, int len, char *dst) {
   return cs_base64_decode(s, len, dst);
 }
 
-#ifdef MG_ENABLE_THREADS
+#if MG_ENABLE_THREADS
 void *mg_start_thread(void *(*f)(void *), void *p) {
 #ifdef _WIN32
   return (void *) _beginthread((void(__cdecl *) (void *) ) f, 0, p);
@@ -7679,13 +7706,13 @@ void mg_sock_addr_to_str(const union socket_address *sa, char *buf, size_t len,
   int is_v6;
   if (buf == NULL || len <= 0) return;
   buf[0] = '\0';
-#if defined(MG_ENABLE_IPV6)
+#if MG_ENABLE_IPV6
   is_v6 = sa->sa.sa_family == AF_INET6;
 #else
   is_v6 = 0;
 #endif
   if (flags & MG_SOCK_STRINGIFY_IP) {
-#if defined(MG_ENABLE_IPV6)
+#if MG_ENABLE_IPV6
     const void *addr = NULL;
     char *start = buf;
     socklen_t capacity = len;
@@ -7728,7 +7755,7 @@ void mg_conn_addr_to_str(struct mg_connection *nc, char *buf, size_t len,
   mg_sock_addr_to_str(&sa, buf, len, flags);
 }
 
-#ifndef MG_DISABLE_HEXDUMP
+#if !MG_DISABLE_HEXDUMP
 int mg_hexdump(const void *buf, int len, char *dst, int dst_len) {
   const unsigned char *p = (const unsigned char *) buf;
   char ascii[17] = "";
@@ -7797,10 +7824,10 @@ int mg_asprintf(char **buf, size_t size, const char *fmt, ...) {
   return ret;
 }
 
-#if !defined(MG_DISABLE_HEXDUMP)
+#if !MG_DISABLE_HEXDUMP
 void mg_hexdump_connection(struct mg_connection *nc, const char *path,
                            const void *buf, int num_bytes, int ev) {
-#if !defined(NO_LIBC) && !defined(MG_DISABLE_STDIO)
+#if !defined(NO_LIBC) && !MG_DISABLE_STDIO
   FILE *fp = NULL;
   char *hexbuf, src[60], dst[60];
   int buf_size = num_bytes * 5 + 100;
@@ -7809,7 +7836,7 @@ void mg_hexdump_connection(struct mg_connection *nc, const char *path,
     fp = stdout;
   } else if (strcmp(path, "--") == 0) {
     fp = stderr;
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
   } else {
     fp = fopen(path, "a");
 #endif
@@ -7936,7 +7963,7 @@ int mg_match_prefix(const char *pattern, int pattern_len, const char *str) {
  * All rights reserved
  */
 
-#ifndef MG_DISABLE_MQTT
+#if !MG_DISABLE_MQTT
 
 #include <string.h>
 
@@ -8262,7 +8289,7 @@ void mg_mqtt_disconnect(struct mg_connection *nc) {
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/mqtt-broker.h" */
 
-#ifdef MG_ENABLE_MQTT_BROKER
+#if MG_ENABLE_MQTT_BROKER
 
 static void mg_mqtt_session_init(struct mg_mqtt_broker *brk,
                                  struct mg_mqtt_session *s,
@@ -8432,7 +8459,7 @@ struct mg_mqtt_session *mg_mqtt_next(struct mg_mqtt_broker *brk,
  * All rights reserved
  */
 
-#ifndef MG_DISABLE_DNS
+#if !MG_DISABLE_DNS
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/dns.h" */
@@ -8475,7 +8502,7 @@ int mg_dns_parse_record_data(struct mg_dns_message *msg,
       }
       memcpy(data, rr->rdata.p, data_len);
       return 0;
-#ifdef MG_ENABLE_IPV6
+#if MG_ENABLE_IPV6
     case MG_DNS_AAAA_RECORD:
       if (data_len < sizeof(struct in6_addr)) {
         return -1; /* LCOV_EXCL_LINE */
@@ -8804,7 +8831,7 @@ void mg_set_protocol_dns(struct mg_connection *nc) {
  * All rights reserved
  */
 
-#ifdef MG_ENABLE_DNS_SERVER
+#if MG_ENABLE_DNS_SERVER
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/dns-server.h" */
@@ -8878,7 +8905,7 @@ int mg_dns_reply_record(struct mg_dns_reply *reply,
  * All rights reserved
  */
 
-#ifndef MG_DISABLE_RESOLVER
+#if !MG_DISABLE_RESOLVER
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/resolv.h" */
@@ -8954,7 +8981,7 @@ static int mg_get_ip_address_of_nameserver(char *name, size_t name_len) {
     }
     RegCloseKey(hKey);
   }
-#elif !defined(MG_DISABLE_FILESYSTEM)
+#elif !MG_DISABLE_FILESYSTEM
   FILE *fp;
   char line[512];
 
@@ -8980,7 +9007,7 @@ static int mg_get_ip_address_of_nameserver(char *name, size_t name_len) {
 }
 
 int mg_resolve_from_hosts_file(const char *name, union socket_address *usa) {
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
   /* TODO(mkm) cache /etc/hosts */
   FILE *fp;
   char line[1024];
@@ -9156,7 +9183,7 @@ int mg_resolve_async_opt(struct mg_mgr *mgr, const char *name, int query,
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/coap.h" */
 
-#ifdef MG_ENABLE_COAP
+#if MG_ENABLE_COAP
 
 void mg_coap_free_options(struct mg_coap_message *cm) {
   while (cm->options != NULL) {
@@ -10642,7 +10669,7 @@ void mg_run_in_task(void (*cb)(struct mg_mgr *mgr, void *arg), void *cb_arg) {
  * All rights reserved
  */
 
-#if !defined(MG_DISABLE_SOCKET_IF) && defined(MG_SOCKET_SIMPLELINK)
+#if !MG_DISABLE_SOCKET_IF && defined(MG_SOCKET_SIMPLELINK)
 
 /* Amalgamated: #include "mongoose/src/internal.h" */
 /* Amalgamated: #include "mongoose/src/util.h" */
@@ -10653,7 +10680,7 @@ void mg_run_in_task(void (*cb)(struct mg_mgr *mgr, void *arg), void *cb_arg) {
 static sock_t mg_open_listening_socket(union socket_address *sa, int type,
                                        int proto);
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 const char *mg_set_ssl2(struct mg_connection *nc, const char *cert,
                         const char *key, const char *ca_cert) {
   DBG(("%p %s,%s,%s", nc, (cert ? cert : "-"), (key ? key : "-"),
@@ -10741,7 +10768,7 @@ void mg_if_connect_tcp(struct mg_connection *nc,
     goto out;
   }
   mg_sock_set(nc, sock);
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   nc->err = sl_set_ssl_opts(nc);
   if (nc->err != 0) goto out;
 #endif
@@ -10767,7 +10794,7 @@ int mg_if_listen_tcp(struct mg_connection *nc, union socket_address *sa) {
   sock_t sock = mg_open_listening_socket(sa, SOCK_STREAM, proto);
   if (sock < 0) return sock;
   mg_sock_set(nc, sock);
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   return sl_set_ssl_opts(nc);
 #else
   return 0;
@@ -10806,7 +10833,7 @@ void mg_if_destroy_conn(struct mg_connection *nc) {
     sl_Close(nc->sock);
   }
   nc->sock = INVALID_SOCKET;
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   MG_FREE(nc->ssl_cert);
   MG_FREE(nc->ssl_key);
   MG_FREE(nc->ssl_ca_cert);
@@ -11143,7 +11170,7 @@ void sl_restart_cb(struct mg_mgr *mgr) {
   }
 }
 
-#endif /* !defined(MG_DISABLE_SOCKET_IF) && defined(MG_SOCKET_SIMPLELINK) */
+#endif /* !MG_DISABLE_SOCKET_IF && defined(MG_SOCKET_SIMPLELINK) */
 #ifdef MG_MODULE_LINES
 #line 1 "common/platforms/lwip/mg_lwip_net_if.h"
 #endif
diff --git a/mongoose.h b/mongoose.h
index c9566701..4a1300f1 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -30,39 +30,24 @@
 #include <mg_locals.h>
 #endif
 
-#if defined(MG_ENABLE_DEBUG) && !defined(CS_ENABLE_DEBUG)
-#define CS_ENABLE_DEBUG
-#endif
-#if defined(MG_DISABLE_STDIO) && !defined(CS_DISABLE_STDIO)
-#define CS_DISABLE_STDIO
-#elif defined(CS_DISABLE_STDIO) && !defined(MG_DISABLE_STDIO)
-#define MG_DISABLE_STDIO
+#ifndef MG_ENABLE_DEBUG
+#define MG_ENABLE_DEBUG 0
 #endif
 
-/* All of the below features depend on filesystem access, disable them. */
-#ifdef MG_DISABLE_FILESYSTEM
-#ifndef MG_DISABLE_DAV
-#define MG_DISABLE_DAV
+#if MG_ENABLE_DEBUG && !defined(CS_ENABLE_DEBUG)
+#define CS_ENABLE_DEBUG 1
 #endif
-#ifndef MG_DISABLE_CGI
-#define MG_DISABLE_CGI
-#endif
-#ifndef MG_DISABLE_DIRECTORY_LISTING
-#define MG_DISABLE_DIRECTORY_LISTING
-#endif
-#ifndef MG_DISABLE_DAV
-#define MG_DISABLE_DAV
-#endif
-#endif /* MG_DISABLE_FILESYSTEM */
 
-#ifdef MG_NO_BSD_SOCKETS
-#ifndef MG_DISABLE_SYNC_RESOLVER
-#define MG_DISABLE_SYNC_RESOLVER
+#ifndef MG_DISABLE_STDIO
+#define MG_DISABLE_STDIO 0
 #endif
-#ifndef MG_DISABLE_SOCKETPAIR
-#define MG_DISABLE_SOCKETPAIR
+
+#if MG_DISABLE_STDIO && !defined(CS_DISABLE_STDIO)
+#define CS_DISABLE_STDIO 1
+#elif defined(CS_DISABLE_STDIO) && !MG_DISABLE_STDIO
+#undef MG_DISABLE_STDIO
+#define MG_DISABLE_STDIO 1
 #endif
-#endif /* MG_NO_BSD_SOCKETS */
 
 /* Amalgamated: #include "common/cs_dbg.h" */
 
@@ -429,6 +414,7 @@ typedef struct stat cs_stat_t;
 #define INT64_FMT PRId64
 #define INT64_X_FMT PRIx64
 #define __cdecl
+#define _FILE_OFFSET_BITS 32
 
 unsigned long os_random(void);
 #define random os_random
@@ -1025,6 +1011,10 @@ void mbuf_trim(struct mbuf *);
 #define CS_COMMON_SHA1_H_
 
 #ifndef DISABLE_SHA1
+#define DISABLE_SHA1 0
+#endif
+
+#if !DISABLE_SHA1
 
 /* Amalgamated: #include "common/platform.h" */
 
@@ -1064,6 +1054,10 @@ void cs_hmac_sha1(const unsigned char *key, size_t key_len,
 
 /* Amalgamated: #include "common/platform.h" */
 
+#ifndef DISABLE_MD5
+#define DISABLE_MD5 0
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
@@ -1112,6 +1106,10 @@ void cs_to_hex(char *to, const unsigned char *p, size_t len);
 #define CS_COMMON_BASE64_H_
 
 #ifndef DISABLE_BASE64
+#define DISABLE_BASE64 0
+#endif
+
+#if !DISABLE_BASE64
 
 #include <stdio.h>
 
@@ -1178,6 +1176,157 @@ const char *c_strnstr(const char *s, const char *find, size_t slen);
 
 #endif /* CS_COMMON_STR_UTIL_H_ */
 #ifdef MG_MODULE_LINES
+#line 1 "mongoose/src/features.h"
+#endif
+/*
+ * Copyright (c) 2014-2016 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#ifndef CS_MONGOOSE_SRC_FEATURES_H_
+#define CS_MONGOOSE_SRC_FEATURES_H_
+
+#ifndef MG_DISABLE_CGI
+#define MG_DISABLE_CGI 0
+#endif
+
+#ifndef MG_DISABLE_DIRECTORY_LISTING
+#define MG_DISABLE_DIRECTORY_LISTING 0
+#endif
+
+#ifndef MG_DISABLE_DNS
+#define MG_DISABLE_DNS 0
+#endif
+
+#ifndef MG_DISABLE_FILESYSTEM
+#define MG_DISABLE_FILESYSTEM 0
+#endif
+
+#ifndef MG_DISABLE_HEXDUMP
+#define MG_DISABLE_HEXDUMP 0
+#endif
+
+#ifndef MG_DISABLE_HTTP_DIGEST_AUTH
+#define MG_DISABLE_HTTP_DIGEST_AUTH 0
+#endif
+
+#ifndef MG_DISABLE_HTTP
+#define MG_DISABLE_HTTP 0
+#endif
+
+#ifndef MG_DISABLE_HTTP_KEEP_ALIVE
+#define MG_DISABLE_HTTP_KEEP_ALIVE 0
+#endif
+
+#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#define MG_DISABLE_HTTP_WEBSOCKET 0
+#endif
+
+#ifndef MG_DISABLE_DAV
+#define MG_DISABLE_DAV 0
+#endif
+
+#ifndef MG_DISABLE_MQTT
+#define MG_DISABLE_MQTT 0
+#endif
+
+#ifndef MG_DISABLE_PFS
+#define MG_DISABLE_PFS 0
+#endif
+
+#ifndef MG_DISABLE_POPEN
+#define MG_DISABLE_POPEN 0
+#endif
+
+#ifndef MG_DISABLE_RESOLVER
+#define MG_DISABLE_RESOLVER 0
+#endif
+
+#ifndef MG_DISABLE_SOCKET_IF
+#define MG_DISABLE_SOCKET_IF 0
+#endif
+
+#ifndef MG_DISABLE_SOCKETPAIR
+#define MG_DISABLE_SOCKETPAIR 0
+#endif
+
+#ifndef MG_DISABLE_SSI
+#define MG_DISABLE_SSI 0
+#endif
+
+#ifndef MG_DISABLE_SYNC_RESOLVER
+#define MG_DISABLE_SYNC_RESOLVER 0
+#endif
+
+#ifndef MG_DISABLE_WS_RANDOM_MASK
+#define MG_DISABLE_WS_RANDOM_MASK 0
+#endif
+
+#ifndef MG_ENABLE_COAP
+#define MG_ENABLE_COAP 0
+#endif
+
+#ifndef MG_ENABLE_DNS_SERVER
+#define MG_ENABLE_DNS_SERVER 0
+#endif
+
+#ifndef MG_ENABLE_FAKE_DAVLOCK
+#define MG_ENABLE_FAKE_DAVLOCK 0
+#endif
+
+#ifndef MG_ENABLE_GETADDRINFO
+#define MG_ENABLE_GETADDRINFO 0
+#endif
+
+#ifndef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#define MG_ENABLE_HTTP_STREAMING_MULTIPART 0
+#endif
+
+#ifndef MG_ENABLE_IPV6
+#define MG_ENABLE_IPV6 0
+#endif
+
+#ifndef MG_ENABLE_JAVASCRIPT
+#define MG_ENABLE_JAVASCRIPT 0
+#endif
+
+#ifndef MG_ENABLE_MQTT_BROKER
+#define MG_ENABLE_MQTT_BROKER 0
+#endif
+
+#ifndef MG_ENABLE_SSL
+#define MG_ENABLE_SSL 0
+#endif
+
+#ifndef MG_ENABLE_THREADS /* ifdef-ok */
+#ifdef _WIN32
+#define MG_ENABLE_THREADS 1
+#else
+#define MG_ENABLE_THREADS 0
+#endif
+#endif
+
+/* All of the below features depend on filesystem access, disable them. */
+#if MG_DISABLE_FILESYSTEM
+#undef MG_DISABLE_DAV
+#define MG_DISABLE_DAV 1
+#undef MG_DISABLE_CGI
+#define MG_DISABLE_CGI 1
+#undef MG_DISABLE_DIRECTORY_LISTING
+#define MG_DISABLE_DIRECTORY_LISTING 1
+#undef MG_DISABLE_DAV
+#define MG_DISABLE_DAV 1
+#endif /* MG_DISABLE_FILESYSTEM */
+
+#ifdef MG_NO_BSD_SOCKETS
+#undef MG_DISABLE_SYNC_RESOLVER
+#define MG_DISABLE_SYNC_RESOLVER 1
+#undef MG_DISABLE_SOCKETPAIR
+#define MG_DISABLE_SOCKETPAIR 1
+#endif /* MG_NO_BSD_SOCKETS */
+
+#endif /* CS_MONGOOSE_SRC_FEATURES_H_ */
+#ifdef MG_MODULE_LINES
 #line 1 "mongoose/src/net.h"
 #endif
 /*
@@ -1210,7 +1359,7 @@ const char *c_strnstr(const char *s, const char *find, size_t slen);
 #ifndef CS_MONGOOSE_SRC_NET_H_
 #define CS_MONGOOSE_SRC_NET_H_
 
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
 #define EXCLUDE_COMMON
 #include <v7.h>
 #endif
@@ -1218,7 +1367,7 @@ const char *c_strnstr(const char *s, const char *find, size_t slen);
 /* Amalgamated: #include "mongoose/src/common.h" */
 /* Amalgamated: #include "common/mbuf.h" */
 
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
 #ifdef __APPLE__
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif
@@ -1246,7 +1395,7 @@ extern "C" {
 union socket_address {
   struct sockaddr sa;
   struct sockaddr_in sin;
-#ifdef MG_ENABLE_IPV6
+#if MG_ENABLE_IPV6
   struct sockaddr_in6 sin6;
 #else
   struct sockaddr sin6;
@@ -1276,12 +1425,12 @@ typedef void (*mg_event_handler_t)(struct mg_connection *, int ev, void *);
 struct mg_mgr {
   struct mg_connection *active_connections;
   const char *hexdump_file; /* Debug hexdump file path */
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
   sock_t ctl[2]; /* Socketpair for mg_broadcast() */
 #endif
   void *user_data; /* User data */
   void *mgr_data;  /* Implementation-specific event manager's data. */
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
   struct v7 *v7;
 #endif
 };
@@ -1300,7 +1449,7 @@ struct mg_connection {
   size_t recv_mbuf_limit;  /* Max size of recv buffer */
   struct mbuf recv_mbuf;   /* Received data */
   struct mbuf send_mbuf;   /* Data scheduled for sending */
-#if defined(MG_ENABLE_SSL)
+#if MG_ENABLE_SSL
 #if !defined(MG_SOCKET_SIMPLELINK)
   SSL *ssl;
   SSL_CTX *ssl_ctx;
@@ -1382,7 +1531,7 @@ void mg_mgr_free(struct mg_mgr *);
  */
 time_t mg_mgr_poll(struct mg_mgr *, int milli);
 
-#ifndef MG_DISABLE_SOCKETPAIR
+#if !MG_DISABLE_SOCKETPAIR
 /*
  * Passes a message of a given length to all connections.
  *
@@ -1453,7 +1602,7 @@ struct mg_bind_opts {
   void *user_data;           /* Initial value for connection's user_data */
   unsigned int flags;        /* Extra connection flags */
   const char **error_string; /* Placeholder for the error string */
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   /* SSL settings. */
   const char *ssl_cert;    /* Server certificate to present to clients */
   const char *ssl_key;     /* Private key corresponding to the certificate.
@@ -1497,7 +1646,7 @@ struct mg_connect_opts {
   void *user_data;           /* Initial value for connection's user_data */
   unsigned int flags;        /* Extra connection flags */
   const char **error_string; /* Placeholder for the error string */
-#ifdef MG_ENABLE_SSL
+#if MG_ENABLE_SSL
   /* SSL settings. */
   const char *ssl_cert;    /* Client certificate to present to the server */
   const char *ssl_key;     /* Private key corresponding to the certificate.
@@ -1578,7 +1727,7 @@ struct mg_connection *mg_connect_opt(struct mg_mgr *mgr, const char *address,
                                      mg_event_handler_t handler,
                                      struct mg_connect_opts opts);
 
-#if defined(MG_ENABLE_SSL) && !defined(MG_SOCKET_SIMPLELINK)
+#if MG_ENABLE_SSL && !defined(MG_SOCKET_SIMPLELINK)
 /*
  * Note: This function is deprecated. Please, use SSL options in
  * mg_connect_opt.
@@ -1639,7 +1788,7 @@ int mg_socketpair(sock_t[2], int sock_type);
  * CAUTION: this function can block.
  * Return 1 on success, 0 on failure.
  */
-#ifndef MG_DISABLE_SYNC_RESOLVER
+#if !MG_DISABLE_SYNC_RESOLVER
 int mg_resolve(const char *domain_name, char *ip_addr_buf, size_t buf_len);
 #endif
 
@@ -1683,7 +1832,7 @@ void mg_enable_multithreading(struct mg_connection *nc);
 void mg_enable_multithreading_opt(struct mg_connection *nc,
                                   struct mg_multithreading_opts opts);
 
-#ifdef MG_ENABLE_JAVASCRIPT
+#if MG_ENABLE_JAVASCRIPT
 /*
  * Enables server-side JavaScript scripting.
  * Requires a `-DMG_ENABLE_JAVASCRIPT` compilation flag and V7 engine sources.
@@ -1945,7 +2094,7 @@ int mg_base64_decode(const unsigned char *s, int len, char *dst);
  */
 void mg_base64_encode(const unsigned char *src, int src_len, char *dst);
 
-#ifndef MG_DISABLE_FILESYSTEM
+#if !MG_DISABLE_FILESYSTEM
 /*
  * Performs a 64-bit `stat()` call against a given file.
  *
@@ -1974,11 +2123,7 @@ FILE *mg_fopen(const char *path, const char *mode);
 int mg_open(const char *path, int flag, int mode);
 #endif /* MG_DISABLE_FILESYSTEM */
 
-#if defined(_WIN32) && !defined(MG_ENABLE_THREADS)
-#define MG_ENABLE_THREADS
-#endif
-
-#ifdef MG_ENABLE_THREADS
+#if MG_ENABLE_THREADS
 /*
  * Starts a new detached thread.
  * Arguments and semantics are the same as pthead's `pthread_create()`.
@@ -2008,7 +2153,7 @@ void mg_set_close_on_exec(sock_t);
  */
 void mg_conn_addr_to_str(struct mg_connection *nc, char *buf, size_t len,
                          int flags);
-#ifndef MG_DISABLE_SOCKET_IF /* Legacy interface. */
+#if !MG_DISABLE_SOCKET_IF /* Legacy interface. */
 void mg_sock_to_str(sock_t sock, char *buf, size_t len, int flags);
 #endif
 
@@ -2213,14 +2358,14 @@ struct mg_ssi_call_ctx {
 #define MG_EV_SSI_CALL 105     /* char * */
 #define MG_EV_SSI_CALL_CTX 106 /* struct mg_ssi_call_ctx * */
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 #define MG_EV_WEBSOCKET_HANDSHAKE_REQUEST 111 /* NULL */
 #define MG_EV_WEBSOCKET_HANDSHAKE_DONE 112    /* NULL */
 #define MG_EV_WEBSOCKET_FRAME 113             /* struct websocket_message * */
 #define MG_EV_WEBSOCKET_CONTROL_FRAME 114     /* struct websocket_message * */
 #endif
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
 #define MG_EV_HTTP_MULTIPART_REQUEST 121 /* struct http_message */
 #define MG_EV_HTTP_PART_BEGIN 122        /* struct mg_http_multipart_part */
 #define MG_EV_HTTP_PART_DATA 123         /* struct mg_http_multipart_part */
@@ -2273,7 +2418,7 @@ struct mg_ssi_call_ctx {
  */
 void mg_set_protocol_http_websocket(struct mg_connection *nc);
 
-#ifndef MG_DISABLE_HTTP_WEBSOCKET
+#if !MG_DISABLE_HTTP_WEBSOCKET
 /*
  * Send websocket handshake to the server.
  *
@@ -2754,7 +2899,7 @@ void mg_http_serve_file(struct mg_connection *nc, struct http_message *hm,
 void mg_register_http_endpoint(struct mg_connection *nc, const char *uri_path,
                                mg_event_handler_t handler);
 
-#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART
+#if MG_ENABLE_HTTP_STREAMING_MULTIPART
 
 /* Callback prototype for `mg_file_upload_handler()`. */
 typedef struct mg_str (*mg_fu_fname_fn)(struct mg_connection *nc,
@@ -3180,7 +3325,7 @@ int mg_mqtt_next_subscribe_topic(struct mg_mqtt_message *msg,
 #ifndef CS_MONGOOSE_SRC_MQTT_BROKER_H_
 #define CS_MONGOOSE_SRC_MQTT_BROKER_H_
 
-#ifdef MG_ENABLE_MQTT_BROKER
+#if MG_ENABLE_MQTT_BROKER
 
 /* Amalgamated: #include "mongoose/src/mqtt.h" */
 
@@ -3439,7 +3584,7 @@ void mg_set_protocol_dns(struct mg_connection *nc);
 #ifndef CS_MONGOOSE_SRC_DNS_SERVER_H_
 #define CS_MONGOOSE_SRC_DNS_SERVER_H_
 
-#ifdef MG_ENABLE_DNS_SERVER
+#if MG_ENABLE_DNS_SERVER
 
 /* Amalgamated: #include "mongoose/src/dns.h" */
 
@@ -3637,7 +3782,7 @@ int mg_resolve_from_hosts_file(const char *host, union socket_address *usa);
 #ifndef CS_MONGOOSE_SRC_COAP_H_
 #define CS_MONGOOSE_SRC_COAP_H_
 
-#ifdef MG_ENABLE_COAP
+#if MG_ENABLE_COAP
 
 #define MG_COAP_MSG_TYPE_FIELD 0x2
 #define MG_COAP_CODE_CLASS_FIELD 0x4