X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;ds=sidebyside;f=gweb%2Fgweb.c;h=12fcb1d8ab32662cd95e9ffb62c81aa8f445bd7b;hb=dd3cccc5e67548dcc2dd6c6254ed6c97859085d5;hp=5aa069732883e0e9764e70ee30fc3eeeb5fdfde0;hpb=d706f4948c2c9634944598b989385c449ed19591;p=platform%2Fupstream%2Fconnman.git

diff --git a/gweb/gweb.c b/gweb/gweb.c
index 5aa0697..12fcb1d 100644
--- a/gweb/gweb.c
+++ b/gweb/gweb.c
@@ -2,7 +2,7 @@
  *
  *  Web service library with GLib integration
  *
- *  Copyright (C) 2009-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2009-2013  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -25,20 +25,42 @@
 
 #include <stdio.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <sys/sendfile.h>
+#include <sys/stat.h>
 #include <arpa/inet.h>
+#include <netdb.h>
+#include <net/if.h>
+#include <netinet/tcp.h>
+#include <ifaddrs.h>
 
 #include "giognutls.h"
 #include "gresolv.h"
 #include "gweb.h"
 
+#define DEFAULT_BUFFER_SIZE  2048
+
 #define SESSION_FLAG_USE_TLS	(1 << 0)
 
+enum chunk_state {
+	CHUNK_SIZE,
+	CHUNK_R_BODY,
+	CHUNK_N_BODY,
+	CHUNK_DATA,
+};
+
 struct _GWebResult {
+	guint16 status;
+	const guint8 *buffer;
+	gsize length;
+	bool use_chunk;
+	gchar *last_key;
+	GHashTable *headers;
 };
 
 struct web_session {
@@ -48,71 +70,135 @@ struct web_session {
 	char *host;
 	uint16_t port;
 	unsigned long flags;
+	struct addrinfo *addr;
+
+	char *content_type;
 
 	GIOChannel *transport_channel;
 	guint transport_watch;
+	guint send_watch;
 
 	guint resolv_action;
+	guint address_action;
 	char *request;
 
-	GWebResult *result;
+	guint8 *receive_buffer;
+	gsize receive_space;
+	GString *send_buffer;
+	GString *current_header;
+	bool header_done;
+	bool body_done;
+	bool more_data;
+	bool request_started;
+
+	enum chunk_state chunck_state;
+	gsize chunk_size;
+	gsize chunk_left;
+	gsize total_len;
+
+	GWebResult result;
 
 	GWebResultFunc result_func;
-	gpointer result_data;
+	GWebRouteFunc route_func;
+	GWebInputFunc input_func;
+	int fd;
+	gsize length;
+	gsize offset;
+	gpointer user_data;
 };
 
 struct _GWeb {
-	gint ref_count;
+	int ref_count;
 
 	guint next_query_id;
 
+	int family;
+
 	int index;
 	GList *session_list;
 
 	GResolv *resolv;
+	char *proxy;
 	char *accept_option;
 	char *user_agent;
+	char *user_agent_profile;
+	char *http_version;
+	bool close_connection;
 
 	GWebDebugFunc debug_func;
 	gpointer debug_data;
 };
 
-static inline void debug(GWeb *web, const char *format, ...)
+#define debug(web, format, arg...)				\
+	_debug(web, __FILE__, __func__, format, ## arg)
+
+static void _debug(GWeb *web, const char *file, const char *caller,
+						const char *format, ...)
 {
 	char str[256];
 	va_list ap;
+	int len;
 
-	if (web->debug_func == NULL)
+	if (!web->debug_func)
 		return;
 
 	va_start(ap, format);
 
-	if (vsnprintf(str, sizeof(str), format, ap) > 0)
-		web->debug_func(str, web->debug_data);
+	if ((len = snprintf(str, sizeof(str), "%s:%s() web %p ",
+						file, caller, web)) > 0) {
+		if (vsnprintf(str + len, sizeof(str) - len, format, ap) > 0)
+			web->debug_func(str, web->debug_data);
+	}
 
 	va_end(ap);
 }
 
 static void free_session(struct web_session *session)
 {
-	GWeb *web = session->web;
+	GWeb *web;
 
-	if (session == NULL)
+	if (!session)
 		return;
 
 	g_free(session->request);
 
+	web = session->web;
+
+	if (session->address_action > 0)
+		g_source_remove(session->address_action);
+
 	if (session->resolv_action > 0)
 		g_resolv_cancel_lookup(web->resolv, session->resolv_action);
 
 	if (session->transport_watch > 0)
 		g_source_remove(session->transport_watch);
 
-	if (session->transport_channel != NULL)
+	if (session->send_watch > 0)
+		g_source_remove(session->send_watch);
+
+	if (session->transport_channel)
 		g_io_channel_unref(session->transport_channel);
 
+	g_free(session->result.last_key);
+
+	if (session->result.headers)
+		g_hash_table_destroy(session->result.headers);
+
+	if (session->send_buffer)
+		g_string_free(session->send_buffer, TRUE);
+
+	if (session->current_header)
+		g_string_free(session->current_header, TRUE);
+
+	g_free(session->receive_buffer);
+
+	g_free(session->content_type);
+
 	g_free(session->host);
 	g_free(session->address);
+	if (session->addr)
+		freeaddrinfo(session->addr);
+
 	g_free(session);
 }
 
@@ -136,58 +222,71 @@ GWeb *g_web_new(int index)
 		return NULL;
 
 	web = g_try_new0(GWeb, 1);
-	if (web == NULL)
+	if (!web)
 		return NULL;
 
 	web->ref_count = 1;
 
 	web->next_query_id = 1;
 
+	web->family = AF_UNSPEC;
+
 	web->index = index;
 	web->session_list = NULL;
 
 	web->resolv = g_resolv_new(index);
-	if (web->resolv == NULL) {
+	if (!web->resolv) {
 		g_free(web);
 		return NULL;
 	}
 
 	web->accept_option = g_strdup("*/*");
 	web->user_agent = g_strdup_printf("GWeb/%s", VERSION);
+	web->close_connection = false;
 
 	return web;
 }
 
 GWeb *g_web_ref(GWeb *web)
 {
-	if (web == NULL)
+	if (!web)
 		return NULL;
 
-	g_atomic_int_inc(&web->ref_count);
+	__sync_fetch_and_add(&web->ref_count, 1);
 
 	return web;
 }
 
 void g_web_unref(GWeb *web)
 {
-	if (web == NULL)
+	if (!web)
 		return;
 
-	if (g_atomic_int_dec_and_test(&web->ref_count) == FALSE)
+	if (__sync_fetch_and_sub(&web->ref_count, 1) != 1)
 		return;
 
 	flush_sessions(web);
 
 	g_resolv_unref(web->resolv);
 
+	g_free(web->proxy);
+
 	g_free(web->accept_option);
 	g_free(web->user_agent);
+	g_free(web->user_agent_profile);
+	g_free(web->http_version);
+
 	g_free(web);
 }
 
+bool g_web_supports_tls(void)
+{
+	return g_io_channel_supports_tls();
+}
+
 void g_web_set_debug(GWeb *web, GWebDebugFunc func, gpointer user_data)
 {
-	if (web == NULL)
+	if (!web)
 		return;
 
 	web->debug_func = func;
@@ -196,21 +295,54 @@ void g_web_set_debug(GWeb *web, GWebDebugFunc func, gpointer user_data)
 	g_resolv_set_debug(web->resolv, func, user_data);
 }
 
-gboolean g_web_add_nameserver(GWeb *web, const char *address)
+bool g_web_set_proxy(GWeb *web, const char *proxy)
 {
-	if (web == NULL)
-		return FALSE;
+	if (!web)
+		return false;
+
+	g_free(web->proxy);
+
+	if (!proxy) {
+		web->proxy = NULL;
+		debug(web, "clearing proxy");
+	} else {
+		web->proxy = g_strdup(proxy);
+		debug(web, "setting proxy %s", web->proxy);
+	}
+
+	return true;
+}
+
+bool g_web_set_address_family(GWeb *web, int family)
+{
+	if (!web)
+		return false;
+
+	if (family != AF_UNSPEC && family != AF_INET && family != AF_INET6)
+		return false;
+
+	web->family = family;
+
+	g_resolv_set_address_family(web->resolv, family);
+
+	return true;
+}
+
+bool g_web_add_nameserver(GWeb *web, const char *address)
+{
+	if (!web)
+		return false;
 
 	g_resolv_add_nameserver(web->resolv, address, 53, 0);
 
-	return TRUE;
+	return true;
 }
 
-static gboolean set_accept_option(GWeb *web, const char *format, va_list args)
+static bool set_accept_option(GWeb *web, const char *format, va_list args)
 {
 	g_free(web->accept_option);
 
-	if (format == NULL) {
+	if (!format) {
 		web->accept_option = NULL;
 		debug(web, "clearing accept option");
 	} else {
@@ -218,16 +350,16 @@ static gboolean set_accept_option(GWeb *web, const char *format, va_list args)
 		debug(web, "setting accept %s", web->accept_option);
 	}
 
-	return TRUE;
+	return true;
 }
 
-gboolean g_web_set_accept(GWeb *web, const char *format, ...)
+bool g_web_set_accept(GWeb *web, const char *format, ...)
 {
 	va_list args;
-	gboolean result;
+	bool result;
 
-	if (web == NULL)
-		return FALSE;
+	if (!web)
+		return false;
 
 	va_start(args, format);
 	result = set_accept_option(web, format, args);
@@ -236,11 +368,11 @@ gboolean g_web_set_accept(GWeb *web, const char *format, ...)
 	return result;
 }
 
-static gboolean set_user_agent(GWeb *web, const char *format, va_list args)
+static bool set_user_agent(GWeb *web, const char *format, va_list args)
 {
 	g_free(web->user_agent);
 
-	if (format == NULL) {
+	if (!format) {
 		web->user_agent = NULL;
 		debug(web, "clearing user agent");
 	} else {
@@ -248,16 +380,16 @@ static gboolean set_user_agent(GWeb *web, const char *format, va_list args)
 		debug(web, "setting user agent %s", web->user_agent);
 	}
 
-	return TRUE;
+	return true;
 }
 
-gboolean g_web_set_user_agent(GWeb *web, const char *format, ...)
+bool g_web_set_user_agent(GWeb *web, const char *format, ...)
 {
 	va_list args;
-	gboolean result;
+	bool result;
 
-	if (web == NULL)
-		return FALSE;
+	if (!web)
+		return false;
 
 	va_start(args, format);
 	result = set_user_agent(web, format, args);
@@ -266,79 +398,698 @@ gboolean g_web_set_user_agent(GWeb *web, const char *format, ...)
 	return result;
 }
 
+bool g_web_set_ua_profile(GWeb *web, const char *profile)
+{
+	if (!web)
+		return false;
+
+	g_free(web->user_agent_profile);
+
+	web->user_agent_profile = g_strdup(profile);
+	debug(web, "setting user agent profile %s", web->user_agent);
+
+	return true;
+}
+
+bool g_web_set_http_version(GWeb *web, const char *version)
+{
+	if (!web)
+		return false;
+
+	g_free(web->http_version);
+
+	if (!version) {
+		web->http_version = NULL;
+		debug(web, "clearing HTTP version");
+	} else {
+		web->http_version = g_strdup(version);
+		debug(web, "setting HTTP version %s", web->http_version);
+	}
+
+	return true;
+}
+
+void g_web_set_close_connection(GWeb *web, bool enabled)
+{
+	if (!web)
+		return;
+
+	web->close_connection = enabled;
+}
+
+bool g_web_get_close_connection(GWeb *web)
+{
+	if (!web)
+		return false;
+
+	return web->close_connection;
+}
+
+static inline void call_result_func(struct web_session *session, guint16 status)
+{
+
+	if (!session->result_func)
+		return;
+
+	if (status != 0)
+		session->result.status = status;
+
+	session->result_func(&session->result, session->user_data);
+
+}
+
+static inline void call_route_func(struct web_session *session)
+{
+	if (session->route_func)
+		session->route_func(session->address, session->addr->ai_family,
+				session->web->index, session->user_data);
+}
+
+static bool process_send_buffer(struct web_session *session)
+{
+	GString *buf;
+	gsize count, bytes_written;
+	GIOStatus status;
+
+	if (!session)
+		return false;
+
+	buf = session->send_buffer;
+	count = buf->len;
+
+	if (count == 0) {
+		if (session->request_started &&
+					!session->more_data &&
+					session->fd == -1)
+			session->body_done = true;
+
+		return false;
+	}
+
+	status = g_io_channel_write_chars(session->transport_channel,
+					buf->str, count, &bytes_written, NULL);
+
+	debug(session->web, "status %u bytes to write %zu bytes written %zu",
+					status, count, bytes_written);
+
+	if (status != G_IO_STATUS_NORMAL && status != G_IO_STATUS_AGAIN)
+		return false;
+
+	g_string_erase(buf, 0, bytes_written);
+
+	return true;
+}
+
+static bool process_send_file(struct web_session *session)
+{
+	int sk;
+	off_t offset;
+	ssize_t bytes_sent;
+
+	if (session->fd == -1)
+		return false;
+
+	if (!session->request_started || session->more_data)
+		return false;
+
+	sk = g_io_channel_unix_get_fd(session->transport_channel);
+	if (sk < 0)
+		return false;
+
+	offset = session->offset;
+
+	bytes_sent = sendfile(sk, session->fd, &offset, session->length);
+
+	debug(session->web, "errno: %d, bytes to send %zu / bytes sent %zu",
+			errno, session->length, bytes_sent);
+
+	if (bytes_sent < 0 && errno != EAGAIN)
+		return false;
+
+	session->offset = offset;
+	session->length -= bytes_sent;
+
+	if (session->length == 0) {
+		session->body_done = true;
+		return false;
+	}
+
+	return true;
+}
+
+static void process_next_chunk(struct web_session *session)
+{
+	GString *buf = session->send_buffer;
+	const guint8 *body;
+	gsize length;
+
+	if (!session->input_func) {
+		session->more_data = false;
+		return;
+	}
+
+	session->more_data = session->input_func(&body, &length,
+						session->user_data);
+
+	if (length > 0) {
+		g_string_append_printf(buf, "%zx\r\n", length);
+		g_string_append_len(buf, (char *) body, length);
+		g_string_append(buf, "\r\n");
+	}
+
+	if (!session->more_data)
+		g_string_append(buf, "0\r\n\r\n");
+}
+
+static void start_request(struct web_session *session)
+{
+	GString *buf = session->send_buffer;
+	const char *version;
+	const guint8 *body;
+	gsize length;
+
+	debug(session->web, "request %s from %s",
+					session->request, session->host);
+
+	g_string_truncate(buf, 0);
+
+	if (!session->web->http_version)
+		version = "1.1";
+	else
+		version = session->web->http_version;
+
+	if (!session->content_type)
+		g_string_append_printf(buf, "GET %s HTTP/%s\r\n",
+						session->request, version);
+	else
+		g_string_append_printf(buf, "POST %s HTTP/%s\r\n",
+						session->request, version);
+
+	g_string_append_printf(buf, "Host: %s\r\n", session->host);
+
+	if (session->web->user_agent)
+		g_string_append_printf(buf, "User-Agent: %s\r\n",
+						session->web->user_agent);
+
+	if (session->web->user_agent_profile) {
+		g_string_append_printf(buf, "x-wap-profile: %s\r\n",
+				       session->web->user_agent_profile);
+	}
+
+	if (session->web->accept_option)
+		g_string_append_printf(buf, "Accept: %s\r\n",
+						session->web->accept_option);
+
+	if (session->content_type) {
+		g_string_append_printf(buf, "Content-Type: %s\r\n",
+							session->content_type);
+		if (!session->input_func) {
+			session->more_data = false;
+			length = session->length;
+		} else
+			session->more_data = session->input_func(&body, &length,
+							session->user_data);
+		if (!session->more_data)
+			g_string_append_printf(buf, "Content-Length: %zu\r\n",
+									length);
+		else
+			g_string_append(buf, "Transfer-Encoding: chunked\r\n");
+	}
+
+	if (session->web->close_connection)
+		g_string_append(buf, "Connection: close\r\n");
+
+	g_string_append(buf, "\r\n");
+
+	if (session->content_type && length > 0) {
+		if (session->more_data) {
+			g_string_append_printf(buf, "%zx\r\n", length);
+			g_string_append_len(buf, (char *) body, length);
+			g_string_append(buf, "\r\n");
+		} else if (session->fd == -1)
+			g_string_append_len(buf, (char *) body, length);
+	}
+}
+
+static gboolean send_data(GIOChannel *channel, GIOCondition cond,
+						gpointer user_data)
+{
+	struct web_session *session = user_data;
+
+	if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
+		session->send_watch = 0;
+		return FALSE;
+	}
+
+	if (process_send_buffer(session))
+		return TRUE;
+
+	if (process_send_file(session))
+		return TRUE;
+
+	if (!session->request_started) {
+		session->request_started = true;
+		start_request(session);
+	} else if (session->more_data)
+		process_next_chunk(session);
+
+	process_send_buffer(session);
+
+	if (session->body_done) {
+		session->send_watch = 0;
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static int decode_chunked(struct web_session *session,
+					const guint8 *buf, gsize len)
+{
+	const guint8 *ptr = buf;
+	gsize counter;
+
+	while (len > 0) {
+		guint8 *pos;
+		gsize count;
+		char *str;
+
+		switch (session->chunck_state) {
+		case CHUNK_SIZE:
+			pos = memchr(ptr, '\n', len);
+			if (!pos) {
+				g_string_append_len(session->current_header,
+						(gchar *) ptr, len);
+				return 0;
+			}
+
+			count = pos - ptr;
+			if (count < 1 || ptr[count - 1] != '\r')
+				return -EILSEQ;
+
+			g_string_append_len(session->current_header,
+						(gchar *) ptr, count);
+
+			len -= count + 1;
+			ptr = pos + 1;
+
+			str = session->current_header->str;
+
+			counter = strtoul(str, NULL, 16);
+			if ((counter == 0 && errno == EINVAL) ||
+						counter == ULONG_MAX)
+				return -EILSEQ;
+
+			session->chunk_size = counter;
+			session->chunk_left = counter;
+
+			session->chunck_state = CHUNK_DATA;
+			break;
+		case CHUNK_R_BODY:
+			if (*ptr != '\r')
+				return -EILSEQ;
+			ptr++;
+			len--;
+			session->chunck_state = CHUNK_N_BODY;
+			break;
+		case CHUNK_N_BODY:
+			if (*ptr != '\n')
+				return -EILSEQ;
+			ptr++;
+			len--;
+			session->chunck_state = CHUNK_SIZE;
+			break;
+		case CHUNK_DATA:
+			if (session->chunk_size == 0) {
+				debug(session->web, "Download Done in chunk");
+				g_string_truncate(session->current_header, 0);
+				return 0;
+			}
+
+			if (session->chunk_left <= len) {
+				session->result.buffer = ptr;
+				session->result.length = session->chunk_left;
+				call_result_func(session, 0);
+
+				len -= session->chunk_left;
+				ptr += session->chunk_left;
+
+				session->total_len += session->chunk_left;
+				session->chunk_left = 0;
+
+				g_string_truncate(session->current_header, 0);
+				session->chunck_state = CHUNK_R_BODY;
+				break;
+			}
+			/* more data */
+			session->result.buffer = ptr;
+			session->result.length = len;
+			call_result_func(session, 0);
+
+			session->chunk_left -= len;
+			session->total_len += len;
+
+			len -= len;
+			ptr += len;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static int handle_body(struct web_session *session,
+				const guint8 *buf, gsize len)
+{
+	int err;
+
+	debug(session->web, "[body] length %zu", len);
+
+	if (!session->result.use_chunk) {
+		if (len > 0) {
+			session->result.buffer = buf;
+			session->result.length = len;
+			call_result_func(session, 0);
+		}
+		return 0;
+	}
+
+	err = decode_chunked(session, buf, len);
+	if (err < 0) {
+		debug(session->web, "Error in chunk decode %d", err);
+
+		session->result.buffer = NULL;
+		session->result.length = 0;
+		call_result_func(session, 400);
+	}
+
+	return err;
+}
+
+static void handle_multi_line(struct web_session *session)
+{
+	gsize count;
+	char *str;
+	gchar *value;
+
+	if (!session->result.last_key)
+		return;
+
+	str = session->current_header->str;
+
+	if (str[0] != ' ' && str[0] != '\t')
+		return;
+
+	while (str[0] == ' ' || str[0] == '\t')
+		str++;
+
+	count = str - session->current_header->str;
+	if (count > 0) {
+		g_string_erase(session->current_header, 0, count);
+		g_string_insert_c(session->current_header, 0, ' ');
+	}
+
+	value = g_hash_table_lookup(session->result.headers,
+					session->result.last_key);
+	if (value) {
+		g_string_insert(session->current_header, 0, value);
+
+		str = session->current_header->str;
+
+		g_hash_table_replace(session->result.headers,
+					g_strdup(session->result.last_key),
+					g_strdup(str));
+	}
+}
+
+static void add_header_field(struct web_session *session)
+{
+	gsize count;
+	guint8 *pos;
+	char *str;
+	gchar *value;
+	gchar *key;
+
+	str = session->current_header->str;
+
+	pos = memchr(str, ':', session->current_header->len);
+	if (pos) {
+		*pos = '\0';
+		pos++;
+
+		key = g_strdup(str);
+
+		/* remove preceding white spaces */
+		while (*pos == ' ')
+			pos++;
+
+		count = (char *) pos - str;
+
+		g_string_erase(session->current_header, 0, count);
+
+		value = g_hash_table_lookup(session->result.headers, key);
+		if (value) {
+			g_string_insert_c(session->current_header, 0, ' ');
+			g_string_insert_c(session->current_header, 0, ';');
+
+			g_string_insert(session->current_header, 0, value);
+		}
+
+		str = session->current_header->str;
+		g_hash_table_replace(session->result.headers, key,
+							g_strdup(str));
+
+		g_free(session->result.last_key);
+		session->result.last_key = g_strdup(key);
+	}
+}
+
 static gboolean received_data(GIOChannel *channel, GIOCondition cond,
 							gpointer user_data)
 {
 	struct web_session *session = user_data;
-	gchar buf[4096];
+	guint8 *ptr = session->receive_buffer;
 	gsize bytes_read;
 	GIOStatus status;
 
 	if (cond & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
 		session->transport_watch = 0;
-		if (session->result_func != NULL)
-			session->result_func(400, NULL, session->result_data);
+		session->result.buffer = NULL;
+		session->result.length = 0;
+		call_result_func(session, 400);
 		return FALSE;
 	}
 
-	memset(buf, 0, sizeof(buf));
-	status = g_io_channel_read_chars(channel, buf, sizeof(buf) - 1,
-						&bytes_read, NULL);
+	status = g_io_channel_read_chars(channel,
+				(gchar *) session->receive_buffer,
+				session->receive_space - 1, &bytes_read, NULL);
 
-	debug(session->web, "status %u bytes read %zu", status, bytes_read);
+	debug(session->web, "bytes read %zu", bytes_read);
 
-	if (status != G_IO_STATUS_NORMAL) {
+	if (status != G_IO_STATUS_NORMAL && status != G_IO_STATUS_AGAIN) {
 		session->transport_watch = 0;
-		if (session->result_func != NULL)
-			session->result_func(200, NULL, session->result_data);
+		session->result.buffer = NULL;
+		session->result.length = 0;
+		call_result_func(session, 0);
 		return FALSE;
 	}
 
-	printf("%s", buf);
+	session->receive_buffer[bytes_read] = '\0';
+
+	if (session->header_done) {
+		if (handle_body(session, session->receive_buffer,
+							bytes_read) < 0) {
+			session->transport_watch = 0;
+			return FALSE;
+		}
+		return TRUE;
+	}
+
+	while (bytes_read > 0) {
+		guint8 *pos;
+		gsize count;
+		char *str;
+
+		pos = memchr(ptr, '\n', bytes_read);
+		if (!pos) {
+			g_string_append_len(session->current_header,
+						(gchar *) ptr, bytes_read);
+			return TRUE;
+		}
+
+		*pos = '\0';
+		count = strlen((char *) ptr);
+		if (count > 0 && ptr[count - 1] == '\r') {
+			ptr[--count] = '\0';
+			bytes_read--;
+		}
+
+		g_string_append_len(session->current_header,
+						(gchar *) ptr, count);
+
+		bytes_read -= count + 1;
+		if (bytes_read > 0)
+			ptr = pos + 1;
+		else
+			ptr = NULL;
+
+		if (session->current_header->len == 0) {
+			char *val;
+
+			session->header_done = true;
+
+			val = g_hash_table_lookup(session->result.headers,
+							"Transfer-Encoding");
+			if (val) {
+				val = g_strrstr(val, "chunked");
+				if (val) {
+					session->result.use_chunk = true;
+
+					session->chunck_state = CHUNK_SIZE;
+					session->chunk_left = 0;
+					session->total_len = 0;
+				}
+			}
+
+			if (handle_body(session, ptr, bytes_read) < 0) {
+				session->transport_watch = 0;
+				return FALSE;
+			}
+			break;
+		}
+
+		str = session->current_header->str;
+
+		if (session->result.status == 0) {
+			unsigned int code;
+
+			if (sscanf(str, "HTTP/%*s %u %*s", &code) == 1)
+				session->result.status = code;
+		}
+
+		debug(session->web, "[header] %s", str);
+
+		/* handle multi-line header */
+		if (str[0] == ' ' || str[0] == '\t')
+			handle_multi_line(session);
+		else
+			add_header_field(session);
+
+		g_string_truncate(session->current_header, 0);
+	}
 
 	return TRUE;
 }
 
+static int bind_to_address(int sk, const char *interface, int family)
+{
+	struct ifaddrs *ifaddr_list, *ifaddr;
+	int size, err = -1;
+
+	if (getifaddrs(&ifaddr_list) < 0)
+		return err;
+
+	for (ifaddr = ifaddr_list; ifaddr; ifaddr = ifaddr->ifa_next) {
+		if (g_strcmp0(ifaddr->ifa_name, interface) != 0)
+			continue;
+
+		if (!ifaddr->ifa_addr ||
+				ifaddr->ifa_addr->sa_family != family)
+			continue;
+
+		switch (family) {
+		case AF_INET:
+			size = sizeof(struct sockaddr_in);
+			break;
+		case AF_INET6:
+			size = sizeof(struct sockaddr_in6);
+			break;
+		default:
+			continue;
+		}
+
+		err = bind(sk, (struct sockaddr *) ifaddr->ifa_addr, size);
+		break;
+	}
+
+	freeifaddrs(ifaddr_list);
+	return err;
+}
+
+static inline int bind_socket(int sk, int index, int family)
+{
+	char interface[IF_NAMESIZE];
+	int err;
+
+	if (!if_indextoname(index, interface))
+		return -1;
+
+	err = setsockopt(sk, SOL_SOCKET, SO_BINDTODEVICE,
+					interface, IF_NAMESIZE);
+	if (err < 0)
+		err = bind_to_address(sk, interface, family);
+
+	return err;
+}
+
 static int connect_session_transport(struct web_session *session)
 {
-	struct sockaddr_in sin;
+	GIOFlags flags;
 	int sk;
 
-	sk = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	sk = socket(session->addr->ai_family, SOCK_STREAM | SOCK_CLOEXEC,
+			IPPROTO_TCP);
 	if (sk < 0)
 		return -EIO;
 
-	memset(&sin, 0, sizeof(sin));
-	sin.sin_family = AF_INET;
-	sin.sin_port = htons(session->port);
-	sin.sin_addr.s_addr = inet_addr(session->address);
-
-	if (connect(sk, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
-		close(sk);
-		return -EIO;
+	if (session->web->index > 0) {
+		if (bind_socket(sk, session->web->index,
+					session->addr->ai_family) < 0) {
+			debug(session->web, "bind() %s", strerror(errno));
+			close(sk);
+			return -EIO;
+		}
 	}
 
-	debug(session->web, "flags %lu", session->flags);
-
-	if (session->flags & SESSION_FLAG_USE_TLS)
+	if (session->flags & SESSION_FLAG_USE_TLS) {
+		debug(session->web, "using TLS encryption");
 		session->transport_channel = g_io_channel_gnutls_new(sk);
-	else
+	} else {
+		debug(session->web, "no encryption");
 		session->transport_channel = g_io_channel_unix_new(sk);
+	}
 
-	if (session->transport_channel == NULL) {
+	if (!session->transport_channel) {
+		debug(session->web, "channel missing");
 		close(sk);
 		return -ENOMEM;
 	}
 
+	flags = g_io_channel_get_flags(session->transport_channel);
+	g_io_channel_set_flags(session->transport_channel,
+					flags | G_IO_FLAG_NONBLOCK, NULL);
+
 	g_io_channel_set_encoding(session->transport_channel, NULL, NULL);
 	g_io_channel_set_buffered(session->transport_channel, FALSE);
 
 	g_io_channel_set_close_on_unref(session->transport_channel, TRUE);
 
+	if (connect(sk, session->addr->ai_addr,
+			session->addr->ai_addrlen) < 0) {
+		if (errno != EINPROGRESS) {
+			debug(session->web, "connect() %s", strerror(errno));
+			return -EIO;
+		}
+	}
+
 	session->transport_watch = g_io_add_watch(session->transport_channel,
 				G_IO_IN | G_IO_HUP | G_IO_NVAL | G_IO_ERR,
 						received_data, session);
 
+	session->send_watch = g_io_add_watch(session->transport_channel,
+				G_IO_OUT | G_IO_HUP | G_IO_NVAL | G_IO_ERR,
+						send_data, session);
+
 	return 0;
 }
 
@@ -356,54 +1107,17 @@ static int create_transport(struct web_session *session)
 	return 0;
 }
 
-static void start_request(struct web_session *session)
-{
-	GString *buf;
-	gchar *str;
-	gsize count, bytes_written;
-	GIOStatus status;
-
-	debug(session->web, "request %s from %s",
-					session->request, session->host);
-
-	buf = g_string_new(NULL);
-	g_string_append_printf(buf, "GET %s HTTP/1.1\r\n", session->request);
-	g_string_append_printf(buf, "Host: %s\r\n", session->host);
-	if (session->web->user_agent != NULL)
-		g_string_append_printf(buf, "User-Agent: %s\r\n",
-						session->web->user_agent);
-	if (session->web->accept_option != NULL)
-		g_string_append_printf(buf, "Accept: %s\r\n",
-						session->web->accept_option);
-	g_string_append(buf, "Connection: close\r\n");
-	g_string_append(buf, "\r\n");
-	str = g_string_free(buf, FALSE);
-
-	count = strlen(str);
-
-	debug(session->web, "bytes to write %zu", count);
-
-	status = g_io_channel_write_chars(session->transport_channel,
-					str, count, &bytes_written, NULL);
-
-	debug(session->web, "status %u bytes written %zu",
-						status, bytes_written);
-
-	printf("%s", str);
-
-	g_free(str);
-}
-
-static int parse_url(struct web_session *session, const char *url)
+static int parse_url(struct web_session *session,
+				const char *url, const char *proxy)
 {
 	char *scheme, *host, *port, *path;
 
 	scheme = g_strdup(url);
-	if (scheme == NULL)
+	if (!scheme)
 		return -EINVAL;
 
 	host = strstr(scheme, "://");
-	if (host != NULL) {
+	if (host) {
 		*host = '\0';
 		host += 3;
 
@@ -422,13 +1136,58 @@ static int parse_url(struct web_session *session, const char *url)
 	}
 
 	path = strchr(host, '/');
-	if (path != NULL)
+	if (path)
 		*(path++) = '\0';
 
-	session->request = g_strdup_printf("/%s", path ? path : "");
+	if (!proxy)
+		session->request = g_strdup_printf("/%s", path ? path : "");
+	else
+		session->request = g_strdup(url);
+
+	port = strrchr(host, ':');
+	if (port) {
+		char *end;
+		int tmp = strtol(port + 1, &end, 10);
+
+		if (*end == '\0') {
+			*port = '\0';
+			session->port = tmp;
+		}
+
+		if (!proxy)
+			session->host = g_strdup(host);
+		else
+			session->host = g_strdup_printf("%s:%u", host, tmp);
+	} else
+		session->host = g_strdup(host);
+
+	g_free(scheme);
+
+	if (!proxy)
+		return 0;
+
+	scheme = g_strdup(proxy);
+	if (!scheme)
+		return -EINVAL;
+
+	host = strstr(proxy, "://");
+	if (host) {
+		*host = '\0';
+		host += 3;
+
+		if (strcasecmp(scheme, "http") != 0) {
+			g_free(scheme);
+			return -EINVAL;
+		}
+	} else
+		host = scheme;
+
+	path = strchr(host, '/');
+	if (path)
+		*(path++) = '\0';
 
 	port = strrchr(host, ':');
-	if (port != NULL) {
+	if (port) {
 		char *end;
 		int tmp = strtol(port + 1, &end, 10);
 
@@ -438,89 +1197,403 @@ static int parse_url(struct web_session *session, const char *url)
 		}
 	}
 
-	session->host = g_strdup(host);
+	session->address = g_strdup(host);
 
 	g_free(scheme);
 
 	return 0;
 }
 
-static void resolv_result(GResolvResultStatus status,
-					char **results, gpointer user_data)
+static void handle_resolved_address(struct web_session *session)
 {
-	struct web_session *session = user_data;
+	struct addrinfo hints;
+	char *port;
+	int ret;
+
+	debug(session->web, "address %s", session->address);
 
-	if (results == NULL || results[0] == NULL) {
-		if (session->result_func != NULL)
-			session->result_func(404, NULL, session->result_data);
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_flags = AI_NUMERICHOST;
+	hints.ai_family = session->web->family;
+
+	if (session->addr) {
+		freeaddrinfo(session->addr);
+		session->addr = NULL;
+	}
+
+	port = g_strdup_printf("%u", session->port);
+	ret = getaddrinfo(session->address, port, &hints, &session->addr);
+	g_free(port);
+	if (ret != 0 || !session->addr) {
+		call_result_func(session, 400);
 		return;
 	}
 
-	debug(session->web, "address %s", results[0]);
+	call_route_func(session);
 
-	if (inet_aton(results[0], NULL) == 0) {
-		if (session->result_func != NULL)
-			session->result_func(400, NULL, session->result_data);
+	if (create_transport(session) < 0) {
+		call_result_func(session, 409);
 		return;
 	}
+}
 
-	session->address = g_strdup(results[0]);
+static gboolean already_resolved(gpointer data)
+{
+	struct web_session *session = data;
 
-	if (create_transport(session) < 0) {
-		if (session->result_func != NULL)
-			session->result_func(409, NULL, session->result_data);
+	session->address_action = 0;
+	handle_resolved_address(session);
+
+	return FALSE;
+}
+
+static void resolv_result(GResolvResultStatus status,
+					char **results, gpointer user_data)
+{
+	struct web_session *session = user_data;
+
+	if (!results || !results[0]) {
+		call_result_func(session, 404);
 		return;
 	}
 
-	start_request(session);
+	g_free(session->address);
+	session->address = g_strdup(results[0]);
+
+	handle_resolved_address(session);
 }
 
-guint g_web_request(GWeb *web, GWebMethod method, const char *url,
-				GWebResultFunc func, gpointer user_data)
+static bool is_ip_address(const char *host)
+{
+	struct addrinfo hints;
+	struct addrinfo *addr;
+	int result;
+
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_flags = AI_NUMERICHOST;
+	addr = NULL;
+
+	result = getaddrinfo(host, NULL, &hints, &addr);
+	if(!result)
+		freeaddrinfo(addr);
+
+	return result == 0;
+}
+
+static guint do_request(GWeb *web, const char *url,
+				const char *type, GWebInputFunc input,
+				int fd, gsize length, GWebResultFunc func,
+				GWebRouteFunc route, gpointer user_data)
 {
 	struct web_session *session;
+	const gchar *host;
 
-	if (web == NULL || url == NULL)
+	if (!web || !url)
 		return 0;
 
 	debug(web, "request %s", url);
 
 	session = g_try_new0(struct web_session, 1);
-	if (session == NULL)
+	if (!session)
 		return 0;
 
-	if (parse_url(session, url) < 0) {
+	if (parse_url(session, url, web->proxy) < 0) {
 		free_session(session);
 		return 0;
 	}
 
-	debug(web, "host %s:%u", session->host, session->port);
+	debug(web, "proxy host %s", session->address);
+	debug(web, "port %u", session->port);
+	debug(web, "host %s", session->host);
 	debug(web, "flags %lu", session->flags);
+	debug(web, "request %s", session->request);
+
+	if (type) {
+		session->content_type = g_strdup(type);
+
+		debug(web, "content-type %s", session->content_type);
+	}
 
 	session->web = web;
 
 	session->result_func = func;
-	session->result_data = user_data;
+	session->route_func = route;
+	session->input_func = input;
+	session->fd = fd;
+	session->length = length;
+	session->offset = 0;
+	session->user_data = user_data;
+
+	session->receive_buffer = g_try_malloc(DEFAULT_BUFFER_SIZE);
+	if (!session->receive_buffer) {
+		free_session(session);
+		return 0;
+	}
 
-	if (inet_aton(session->host, NULL) == 0) {
-		session->resolv_action = g_resolv_lookup_hostname(web->resolv,
-					session->host, resolv_result, session);
-		if (session->resolv_action == 0) {
-			free_session(session);
-			return 0;
+	session->result.headers = g_hash_table_new_full(g_str_hash, g_str_equal,
+							g_free, g_free);
+	if (!session->result.headers) {
+		free_session(session);
+		return 0;
+	}
+
+	session->receive_space = DEFAULT_BUFFER_SIZE;
+	session->send_buffer = g_string_sized_new(0);
+	session->current_header = g_string_sized_new(0);
+	session->header_done = false;
+	session->body_done = false;
+
+	host = session->address ? session->address : session->host;
+	if (is_ip_address(host)) {
+		if (session->address != host) {
+			g_free(session->address);
+			session->address = g_strdup(host);
 		}
+		session->address_action = g_idle_add(already_resolved, session);
 	} else {
-		session->address = g_strdup(session->host);
-
-		if (create_transport(session) < 0) {
+		session->resolv_action = g_resolv_lookup_hostname(web->resolv,
+					host, resolv_result, session);
+		if (session->resolv_action == 0) {
 			free_session(session);
 			return 0;
 		}
-
-		start_request(session);
 	}
 
 	web->session_list = g_list_append(web->session_list, session);
 
 	return web->next_query_id++;
 }
+
+guint g_web_request_get(GWeb *web, const char *url, GWebResultFunc func,
+		GWebRouteFunc route, gpointer user_data)
+{
+	return do_request(web, url, NULL, NULL, -1, 0, func, route, user_data);
+}
+
+guint g_web_request_post(GWeb *web, const char *url,
+				const char *type, GWebInputFunc input,
+				GWebResultFunc func, gpointer user_data)
+{
+	return do_request(web, url, type, input, -1, 0, func, NULL, user_data);
+}
+
+guint g_web_request_post_file(GWeb *web, const char *url,
+				const char *type, const char *file,
+				GWebResultFunc func, gpointer user_data)
+{
+	struct stat st;
+	int fd;
+	guint ret;
+
+	if (stat(file, &st) < 0)
+		return 0;
+
+	fd = open(file, O_RDONLY);
+	if (fd < 0)
+		return 0;
+
+	ret = do_request(web, url, type, NULL, fd, st.st_size, func, NULL,
+			user_data);
+	if (ret == 0)
+		close(fd);
+
+	return ret;
+}
+
+bool g_web_cancel_request(GWeb *web, guint id)
+{
+	if (!web)
+		return false;
+
+	return true;
+}
+
+guint16 g_web_result_get_status(GWebResult *result)
+{
+	if (!result)
+		return 0;
+
+	return result->status;
+}
+
+bool g_web_result_get_chunk(GWebResult *result,
+				const guint8 **chunk, gsize *length)
+{
+	if (!result)
+		return false;
+
+	if (!chunk)
+		return false;
+
+	*chunk = result->buffer;
+
+	if (length)
+		*length = result->length;
+
+	return true;
+}
+
+bool g_web_result_get_header(GWebResult *result,
+				const char *header, const char **value)
+{
+	if (!result)
+		return false;
+
+	if (!value)
+		return false;
+
+	*value = g_hash_table_lookup(result->headers, header);
+
+	if (!*value)
+		return false;
+
+	return true;
+}
+
+struct _GWebParser {
+	gint ref_count;
+	char *begin_token;
+	char *end_token;
+	const char *token_str;
+	size_t token_len;
+	size_t token_pos;
+	bool intoken;
+	GString *content;
+	GWebParserFunc func;
+	gpointer user_data;
+};
+
+GWebParser *g_web_parser_new(const char *begin, const char *end,
+				GWebParserFunc func, gpointer user_data)
+{
+	GWebParser *parser;
+
+	if (!begin || !end)
+		return NULL;
+
+	parser = g_try_new0(GWebParser, 1);
+	if (!parser)
+		return NULL;
+
+	parser->ref_count = 1;
+
+	parser->begin_token = g_strdup(begin);
+	parser->end_token = g_strdup(end);
+	parser->func = func;
+	parser->user_data = user_data;
+
+	parser->token_str = parser->begin_token;
+	parser->token_len = strlen(parser->token_str);
+	parser->token_pos = 0;
+
+	parser->intoken = false;
+	parser->content = g_string_sized_new(0);
+
+	return parser;
+}
+
+GWebParser *g_web_parser_ref(GWebParser *parser)
+{
+	if (!parser)
+		return NULL;
+
+	__sync_fetch_and_add(&parser->ref_count, 1);
+
+	return parser;
+}
+
+void g_web_parser_unref(GWebParser *parser)
+{
+	if (!parser)
+		return;
+
+	if (__sync_fetch_and_sub(&parser->ref_count, 1) != 1)
+		return;
+
+	g_string_free(parser->content, TRUE);
+
+	g_free(parser->begin_token);
+	g_free(parser->end_token);
+	g_free(parser);
+}
+
+void g_web_parser_feed_data(GWebParser *parser,
+				const guint8 *data, gsize length)
+{
+	const guint8 *ptr = data;
+
+	if (!parser)
+		return;
+
+	while (length > 0) {
+		guint8 chr = parser->token_str[parser->token_pos];
+
+		if (parser->token_pos == 0) {
+			guint8 *pos;
+
+			pos = memchr(ptr, chr, length);
+			if (!pos) {
+				if (parser->intoken)
+					g_string_append_len(parser->content,
+							(gchar *) ptr, length);
+				break;
+			}
+
+			if (parser->intoken)
+				g_string_append_len(parser->content,
+						(gchar *) ptr, (pos - ptr) + 1);
+
+			length -= (pos - ptr) + 1;
+			ptr = pos + 1;
+
+			parser->token_pos++;
+			continue;
+		}
+
+		if (parser->intoken)
+			g_string_append_c(parser->content, ptr[0]);
+
+		if (ptr[0] != chr) {
+			length--;
+			ptr++;
+
+			parser->token_pos = 0;
+			continue;
+		}
+
+		length--;
+		ptr++;
+
+		parser->token_pos++;
+
+		if (parser->token_pos == parser->token_len) {
+			if (!parser->intoken) {
+				g_string_append(parser->content,
+							parser->token_str);
+
+				parser->intoken = true;
+				parser->token_str = parser->end_token;
+				parser->token_len = strlen(parser->end_token);
+				parser->token_pos = 0;
+			} else {
+				char *str;
+				str = g_string_free(parser->content, FALSE);
+				parser->content = g_string_sized_new(0);
+				if (parser->func)
+					parser->func(str, parser->user_data);
+				g_free(str);
+
+				parser->intoken = false;
+				parser->token_str = parser->begin_token;
+				parser->token_len = strlen(parser->begin_token);
+				parser->token_pos = 0;
+			}
+		}
+	}
+}
+
+void g_web_parser_end_data(GWebParser *parser)
+{
+	if (!parser)
+		return;
+}