http_client lib

8 files changed, 323 insertions, 9 deletions

diff --git a/Makefile b/Makefile
index d022c0e1..cc5757dc 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@
 -include Makefile.settings
 
 # Program variables
-objects = account.o bitlbee.o commands.o conf.o crypting.o help.o ini.o irc.o log.o nick.o query.o set.o unix.o url.o user.o storage_text.o storage.o
+objects = account.o bitlbee.o commands.o conf.o crypting.o help.o ini.o irc.o log.o nick.o query.o set.o storage.o storage_text.o unix.o url.o user.o
 subdirs = protocols
 
 # Expansion of variables
diff --git a/protocols/Makefile b/protocols/Makefile
index c5f938fd..1ed6b52e 100644
--- a/protocols/Makefile
+++ b/protocols/Makefile
@@ -9,7 +9,7 @@
 -include ../Makefile.settings
 
 # [SH] Program variables
-objects = md5.o nogaim.o proxy.o sha.o util.o $(SSL_CLIENT)
+objects = http_client.o md5.o nogaim.o proxy.o sha.o $(SSL_CLIENT) util.o
 
 # [SH] The next two lines should contain the directory name (in $(subdirs))
 #      and the name of the object file, which should be linked into
diff --git a/protocols/http_client.c b/protocols/http_client.c
new file mode 100644
index 00000000..f631981f
--- /dev/null
+++ b/protocols/http_client.c
@@ -0,0 +1,239 @@
+  /********************************************************************\
+  * BitlBee -- An IRC to other IM-networks gateway                     *
+  *                                                                    *
+  * Copyright 2002-2005 Wilmer van der Gaast and others                *
+  \********************************************************************/
+
+/* HTTP(S) module (actually, it only does HTTPS right now)              */
+
+/*
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License with
+  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
+  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
+  Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <string.h>
+
+#include "sock.h"
+#include "http_client.h"
+
+
+static void http_connected( gpointer data, int source, GaimInputCondition cond );
+static void http_ssl_connected( gpointer data, void *source, GaimInputCondition cond );
+static void http_incoming_data( gpointer data, int source, GaimInputCondition cond );
+
+
+void *http_dorequest( char *host, int port, http_input_function func, int ssl, char *request, gpointer data )
+{
+	struct http_request *req;
+	int error = 0;
+	
+	req = g_new0( struct http_request, 1 );
+	
+	if( ssl )
+	{
+		req->ssl = ssl_connect( host, port, http_ssl_connected, req );
+		if( req->ssl == NULL )
+			error = 1;
+	}
+	else
+	{
+		req->fd = proxy_connect( host, port, http_connected, req );
+		if( req->fd < 0 )
+			error = 1;
+	}
+	
+	if( error )
+	{
+		g_free( req );
+		return( NULL );
+	}
+	
+	req->request = g_strdup( request );
+	req->request_length = strlen( request );
+	
+	return( req );
+}
+
+/* This one is actually pretty simple... Might get more calls if we can't write 
+   the whole request at once. */
+static void http_connected( gpointer data, int source, GaimInputCondition cond )
+{
+	struct http_request *req = data;
+	int st;
+	
+	if( source < 0 )
+		goto error;
+	
+	if( req->inpa > 0 )
+		gaim_input_remove( req->inpa );
+	
+	sock_make_nonblocking( req->fd );
+	
+	if( req->ssl )
+	{
+		st = ssl_write( req->ssl, req->request + req->bytes_written,
+		                req->request_length - req->bytes_written );
+		if( st < 0 )
+		{
+			if( ssl_errno != SSL_AGAIN )
+			{
+				ssl_disconnect( req->ssl );
+				goto error;
+			}
+		}
+	}
+	else
+	{
+		st = write( source, req->request + req->bytes_written,
+		                    req->request_length - req->bytes_written );
+		if( st < 0 )
+		{
+			if( !sockerr_again() )
+			{
+				close( req->fd );
+				goto error;
+			}
+		}
+	}
+	
+	if( st > 0 )
+		req->bytes_written += st;
+	
+	if( req->bytes_written < req->request_length )
+		req->inpa = gaim_input_add( source,
+		                            req->ssl ? ssl_getdirection( req->ssl ) : GAIM_INPUT_WRITE,
+	        	                    http_connected, req );
+	else
+		req->inpa = gaim_input_add( source, GAIM_INPUT_READ, http_incoming_data, req );
+	
+	return;
+	
+error:
+	req->func( req );
+	
+	g_free( req->request );
+	g_free( req );
+	
+	return;
+}
+
+static void http_ssl_connected( gpointer data, void *source, GaimInputCondition cond )
+{
+	struct http_request *req = data;
+	
+	if( source == NULL )
+		return http_connected( data, -1, cond );
+	
+	req->fd = ssl_getfd( source );
+	
+	return http_connected( data, req->fd, cond );
+}
+
+static void http_incoming_data( gpointer data, int source, GaimInputCondition cond )
+{
+	struct http_request *req = data;
+	int evil_server = 0;
+	char buffer[2048];
+	char *end1, *end2;
+	int st;
+	
+	if( req->inpa > 0 )
+		gaim_input_remove( req->inpa );
+	
+	if( req->ssl )
+	{
+		st = ssl_read( req->ssl, buffer, sizeof( buffer ) );
+		if( st < 0 )
+		{
+			if( ssl_errno != SSL_AGAIN )
+			{
+				goto cleanup;
+			}
+		}
+		else if( st == 0 )
+		{
+			goto got_reply;
+		}
+	}
+	else
+	{
+		st = read( req->fd, buffer, sizeof( buffer ) );
+		if( st < 0 )
+		{
+			if( !sockerr_again() )
+			{
+				goto cleanup;
+			}
+		}
+		else if( st == 0 )
+		{
+			goto got_reply;
+		}
+	}
+	
+	if( st > 0 )
+	{
+		req->reply_headers = g_realloc( req->reply_headers, req->bytes_read + st + 1 );
+		memcpy( req->reply_headers + req->bytes_read, buffer, st );
+	}
+	
+	/* There will be more! */
+	req->inpa = gaim_input_add( req->fd,
+	                            req->ssl ? ssl_getdirection( req->ssl ) : GAIM_INPUT_READ,
+	                            http_incoming_data, req );
+	
+	return;
+
+got_reply:
+	/* Zero termination is very convenient. */
+	req->reply_headers[req->bytes_read] = 0;
+	
+	/* Find the separation between headers and body, and keep stupid
+	   webservers in mind. */
+	end1 = strstr( req->reply_headers, "\r\n\r\n" );
+	end2 = strstr( req->reply_headers, "\n\n" );
+	
+	if( end2 && end2 < end1 )
+	{
+		end1 = end2;
+		evil_server = 1;
+	}
+	
+	if( end1 )
+	{
+		*end1 = 0;
+		
+		if( evil_server )
+			req->reply_body = end1 + 2;
+		else
+			req->reply_body = end1 + 4;
+	}
+	
+	/* Assume that a closed connection means we're finished, this indeed
+	   breaks with keep-alive connections and faulty connections. */
+	req->finished = 1;
+
+cleanup:
+	if( req->ssl )
+		ssl_disconnect( req->ssl );
+	else
+		close( req->fd );
+	
+	req->func( req );
+	
+	g_free( req->request );
+	g_free( req->reply_headers );
+	g_free( req );
+}
diff --git a/protocols/http_client.h b/protocols/http_client.h
new file mode 100644
index 00000000..440fdc9d
--- /dev/null
+++ b/protocols/http_client.h
@@ -0,0 +1,54 @@
+  /********************************************************************\
+  * BitlBee -- An IRC to other IM-networks gateway                     *
+  *                                                                    *
+  * Copyright 2002-2005 Wilmer van der Gaast and others                *
+  \********************************************************************/
+
+/* HTTP(S) module (actually, it only does HTTPS right now)              */
+
+/*
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License with
+  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
+  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
+  Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <glib.h>
+
+#include "ssl_client.h"
+
+struct http_request;
+
+typedef void (*http_input_function)( struct http_request * );
+
+struct http_request
+{
+	char *request;
+	int request_length;
+	int status_code;
+	char *reply_headers;
+	char *reply_body;
+	int finished;
+	
+	void *ssl;
+	int fd;
+	
+	int inpa;
+	int bytes_written;
+	int bytes_read;
+	
+	http_input_function func;
+	gpointer data;
+};
+
+void *http_dorequest( char *host, int port, http_input_function func, int ssl, char *request, gpointer data );
diff --git a/protocols/proxy.c b/protocols/proxy.c
index c658a163..1ca35dfe 100644
--- a/protocols/proxy.c
+++ b/protocols/proxy.c
@@ -105,8 +105,6 @@ static gboolean gaim_io_invoke(GIOChannel *source, GIOCondition condition, gpoin
 		gaim_cond |= GAIM_INPUT_READ;
 	if (condition & GAIM_WRITE_COND)
 		gaim_cond |= GAIM_INPUT_WRITE;
-//	if (condition & GAIM_ERR_COND)
-//		fprintf( stderr, "ERROR! fd=%d\n", g_io_channel_unix_get_fd( source ) );
 
 	closure->function(closure->data, g_io_channel_unix_get_fd(source), gaim_cond);
 
diff --git a/protocols/ssl_client.h b/protocols/ssl_client.h
index 58c379c9..89189db9 100644
--- a/protocols/ssl_client.h
+++ b/protocols/ssl_client.h
@@ -39,3 +39,4 @@ G_MODULE_EXPORT int ssl_read( void *conn, char *buf, int len );
 G_MODULE_EXPORT int ssl_write( void *conn, const char *buf, int len );
 G_MODULE_EXPORT void ssl_disconnect( void *conn_ );
 G_MODULE_EXPORT int ssl_getfd( void *conn );
+G_MODULE_EXPORT GaimInputCondition ssl_getdirection( void *conn );
diff --git a/protocols/ssl_gnutls.c b/protocols/ssl_gnutls.c
index aab5eaed..2e307aab 100644
--- a/protocols/ssl_gnutls.c
+++ b/protocols/ssl_gnutls.c
@@ -116,9 +116,7 @@ static void ssl_handshake( gpointer data, gint source, GaimInputCondition cond )
 	{
 		if( st == GNUTLS_E_AGAIN || st == GNUTLS_E_INTERRUPTED )
 		{
-			conn->inpa = gaim_input_add( conn->fd,
-			                             gnutls_record_get_direction( conn->session ) ?
-			                                 GAIM_INPUT_WRITE : GAIM_INPUT_READ,
+			conn->inpa = gaim_input_add( conn->fd, ssl_getdirection( conn ),
 			                             ssl_handshake, data );
 		}
 		else
@@ -144,25 +142,40 @@ static void ssl_handshake( gpointer data, gint source, GaimInputCondition cond )
 
 int ssl_read( void *conn, char *buf, int len )
 {
+	int st;
+	
 	if( !((struct scd*)conn)->established )
 	{
 		ssl_errno = SSL_NOHANDSHAKE;
 		return( -1 );
 	}
 	
-	return( gnutls_record_recv( ((struct scd*)conn)->session, buf, len ) );
+	st = gnutls_record_recv( ((struct scd*)conn)->session, buf, len );
+	
+	ssl_errno = SSL_OK;
+	if( st == GNUTLS_E_AGAIN || st == GNUTLS_E_INTERRUPTED )
+		ssl_errno = SSL_AGAIN;
 	
+	return st;
 }
 
 int ssl_write( void *conn, const char *buf, int len )
 {
+	int st;
+	
 	if( !((struct scd*)conn)->established )
 	{
 		ssl_errno = SSL_NOHANDSHAKE;
 		return( -1 );
 	}
 	
-	return( gnutls_record_send( ((struct scd*)conn)->session, buf, len ) );
+	st = gnutls_record_send( ((struct scd*)conn)->session, buf, len );
+	
+	ssl_errno = SSL_OK;
+	if( st == GNUTLS_E_AGAIN || st == GNUTLS_E_INTERRUPTED )
+		ssl_errno = SSL_AGAIN;
+	
+	return st;
 }
 
 void ssl_disconnect( void *conn_ )
@@ -183,3 +196,9 @@ int ssl_getfd( void *conn )
 {
 	return( ((struct scd*)conn)->fd );
 }
+
+GaimInputCondition ssl_getdirection( void *conn )
+{
+	return( gnutls_record_get_direction( ((struct scd*)conn)->session ) ?
+	        GAIM_INPUT_WRITE : GAIM_INPUT_READ );
+}
diff --git a/sock.h b/sock.h
index 9a9cc223..23a08bb4 100644
--- a/sock.h
+++ b/sock.h
@@ -1,3 +1,6 @@
+#include <errno.h>
+#include <fcntl.h>
+
 #ifndef _WIN32
 #include <unistd.h>
 #include <sys/socket.h>