Added. New stream for HTTP requests (currently supported are GET and

2002-02-04  Jeffrey Stedfast  <fejj@ximian.com>

	* camel-http-stream.[c,h]: Added. New stream for HTTP requests
	(currently supported are GET and HEAD).

	* camel-tcp-stream-ssl.c (stream_connect): Call set_errno
	appropriately.

svn path=/trunk/; revision=15567

3 files changed, 530 insertions, 0 deletions

diff --git a/camel/ChangeLog b/camel/ChangeLog
index 287bc4cf02..64e6a83717 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,5 +1,8 @@
 2002-02-04  Jeffrey Stedfast  <fejj@ximian.com>
 
+	* camel-http-stream.[c,h]: Added. New stream for HTTP requests
+	(currently supported are GET and HEAD).
+
 	* camel-tcp-stream-ssl.c (stream_connect): Call set_errno
 	appropriately.
 
diff --git a/camel/camel-http-stream.c b/camel/camel-http-stream.c
new file mode 100644
index 0000000000..b7880df2e2
--- /dev/null
+++ b/camel/camel-http-stream.c
@@ -0,0 +1,441 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ *  Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ *  Copyright 2002 Ximain, Inc. (www.ximian.com)
+ *
+ *  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
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "camel-http-stream.h"
+#include "camel-stream-buffer.h"
+#include "camel-tcp-stream-raw.h"
+#ifdef HAVE_NSS
+#include "camel-tcp-stream-ssl.h"
+#endif
+#ifdef HAVE_OPENSSL
+#include "camel-tcp-stream-openssl.h"
+#endif
+#include "camel-exception.h"
+#include "camel-session.h"
+
+#define d(x) x
+
+
+static CamelStreamClass *parent_class = NULL;
+
+static ssize_t stream_read (CamelStream *stream, char *buffer, size_t n);
+static ssize_t stream_write (CamelStream *stream, const char *buffer, size_t n);
+static int stream_flush  (CamelStream *stream);
+static int stream_close  (CamelStream *stream);
+static int stream_reset  (CamelStream *stream);
+
+static void
+camel_http_stream_class_init (CamelHttpStreamClass *camel_http_stream_class)
+{
+	CamelStreamClass *camel_stream_class =
+		CAMEL_STREAM_CLASS (camel_http_stream_class);
+	
+	parent_class = CAMEL_STREAM_CLASS (camel_type_get_global_classfuncs (camel_stream_get_type ()));
+	
+	/* virtual method overload */
+	camel_stream_class->read = stream_read;
+	camel_stream_class->write = stream_write;
+	camel_stream_class->flush = stream_flush;
+	camel_stream_class->close = stream_close;
+	camel_stream_class->reset = stream_reset;
+}
+
+static void
+camel_http_stream_init (gpointer object, gpointer klass)
+{
+	CamelHttpStream *stream = CAMEL_HTTP_STREAM (object);
+	
+	stream->content_type = NULL;
+	stream->headers = NULL;
+	stream->service = NULL;
+	stream->url = NULL;
+	stream->raw = NULL;
+}
+
+static void
+headers_free (http->headers)
+{
+	struct _header_raw *node, *next;
+	
+	node = http->headers;
+	while (node) {
+		next = node->next;
+		g_free (node->name);
+		g_free (node->value);
+		g_free (node);
+		node = next;
+	}
+}
+
+static void
+camel_http_stream_finalize (CamelObject *object)
+{
+	CamelHttpStream *stream = CAMEL_HTTP_STREAM (object);
+	
+	if (stream->content_type)
+		header_content_type_unref (stream->content_type);
+	
+	if (stream->headers)
+		headers_free (stream->headers);
+	
+	if (stream->service)
+		camel_object_unref (CAMEL_OBJECT (service));
+	
+	if (stream->url)
+		camel_url_free (stream->url);
+	
+	if (stream->raw)
+		camel_object_unref (CAMEL_OBJECT (stream->raw));
+}
+
+
+CamelType
+camel_http_stream_get_type (void)
+{
+	static CamelType type = CAMEL_INVALID_TYPE;
+	
+	if (type == CAMEL_INVALID_TYPE) {
+		type = camel_type_register (camel_stream_get_type (),
+					    "CamelHttpStream",
+					    sizeof (CamelHttpStream),
+					    sizeof (CamelHttpStreamClass),
+					    (CamelObjectClassInitFunc) camel_http_stream_class_init,
+					    NULL,
+					    (CamelObjectInitFunc) camel_http_stream_init,
+					    (CamelObjectFinalizeFunc) camel_http_stream_finalize);
+	}
+	
+	return type;
+}
+
+
+/**
+ * camel_http_stream_new:
+ * @method: HTTP method
+ * @service: parent service (for SSL/TLS)
+ * @url: URL to act upon
+ *
+ * Return value: a http stream
+ **/
+CamelStream *
+camel_http_stream_new (CamelHttpMethod method, CamelService *service, CamelURL *url)
+{
+	CamelHttpStream *stream;
+	char *str;
+	
+	g_return_val_if_fail (!CAMEL_IS_SERVICE (service), NULL);
+	g_return_val_if_fail (url != NULL, NULL);
+	
+	stream = CAMEL_HTTP_STREAM (camel_object_new (camel_http_stream_get_type ()));
+	
+	stream->method = method;
+	stream->service = service;
+	camel_object_ref (CAMEL_OBJECT (service));
+	
+	str = camel_url_to_string (url, 0);
+	stream->url = camel_url_new (str, NULL);
+	g_free (str);
+	
+	return CAMEL_STREAM (stream);
+}
+
+
+static CamelStream *
+http_connect (CamelService *service, CamelURL *url)
+{
+	CamelStream *buffered, *stream = NULL;
+	struct hostent *host;
+	int errsave;
+	
+	if (!strcasecmp (url->protocol, "https")) {
+#ifdef HAVE_NSS
+		stream = camel_tcp_stream_ssl_new (service, url->host);
+#else
+#ifdef HAVE_OPENSSL
+		stream = camel_tcp_stream_openssl_new (service, url->host);
+#endif /* HAVE_OPENSSL */
+#endif /* HAVE_NSS */  
+	} else {
+		stream = camel_tcp_stream_raw_new ();
+	}
+	
+	if (stream == NULL) {
+		errno = EINVAL;
+		return NULL;
+	}
+	
+	host = camel_get_host_byname (url->host, NULL);
+	if (!host) {
+		errno = EHOSTUNREACH;
+		return NULL;
+	}
+	
+	if (camel_tcp_stream_connect (CAMEL_TCP_STREAM (stream), host, url->port ? url->port : 80) == -1) {
+		errsave = errno;
+		camel_object_unref (CAMEL_OBJECT (stream));
+		camel_free_host (host);
+		errno = errsave;
+		return NULL;
+	}
+	
+	camel_free_host (host);
+	
+	buffered = camel_stream_buffer_new (stream, CAMEL_STREAM_BUFFER_READ);
+	camel_object_unref (CAMEL_OBJECT (stream));
+	
+	return buffered;
+}
+
+
+static const char *
+http_next_token (const unsigned char *in)
+{
+	const char *inptr = in;
+	
+	while (*inptr && !is_lwsp (*inptr))
+		inptr++;
+	
+	while (*inptr && is_lwsp (*inptr))
+		inptr++;
+	
+	return inptr;
+}
+
+static int
+http_get_headers (CamelHttpStream *http)
+{
+	CamelMimeParser *mp;
+	struct _header_raw *headers, *node, *tail;
+	const char *type, *token;
+	int status, len, err;
+	char *buf;
+	
+	if (camel_stream_buffer_gets (CAMEL_STREAM_BUFFER (http->raw), buffer, 4096) <= 0)
+		return -1;
+	
+	if (!stncasecmp (buffer, "HTTP/", 5)) {
+		token = http_next_token (buffer);
+		status = header_decode_int (&token);
+		/* FIXME: don't just check for 200 */
+		if (status != 200 /* OK */)
+			goto exception;
+	} else
+		goto exception;
+	
+	mp = camel_mime_parser_new ();
+	camel_mime_parser_init_with_stream (mp, http->raw);
+	
+	switch (camel_mime_parser_step (mp, &buf, &len)) {
+	case HSCAN_MESSAGE:
+	case HSCAN_HEADER:
+	case HSCAN_MULTIPART:
+		/* we have the headers, build them into 'us' */
+		headers = camel_mime_parser_headers_raw (mp);
+		
+		/* if content-type exists, process it first, set for fallback charset in headers */
+		if (http->content_type)
+			header_content_type_unref (http->content_type);
+		type = header_raw_find (&headers, "Content-Type", NULL);
+		if (type)
+			http->content_type = header_content_type_decode (type);
+		else
+			http->content_type = NULL;
+		
+		if (http->headers)
+			headers_free (http->headers);
+		
+		http->headers = NULL;
+		tail = (struct _header_raw *) &http->headers;
+		
+		while (headers) {
+			node = g_new (struct _header_raw, 1);
+			node->next = NULL;
+			node->name = g_strdup (headers->name);
+			node->value = g_strdup (headers->value);
+			node->offset = headers->offset;
+			tail->next = node;
+			tail = node;
+			headers = headers->next;
+		}
+		
+		break;
+	default:
+		g_warning ("Invalid state encountered???: %d", camel_mime_parser_state (mp));
+	}
+	
+	err = camel_mime_parser_errno (mp);
+	camel_object_unref (CAMEL_OBJECT (mp));
+	
+	if (err != 0)
+		goto exception;
+	
+	return 0;
+	
+ exception:
+	camel_object_unref (CAMEL_OBJECT (http->raw));
+	http->raw = NULL;
+	
+	return -1;
+}
+
+
+static ssize_t
+stream_read (CamelStream *stream, char *buffer, size_t n)
+{
+	CamelHttpStream *http = CAMEL_HTTP_STREAM (stream);
+	
+	if (http->method != CAMEL_HTTP_METHOD_GET || http->method != CAMEL_HTTP_METHOD_HEAD) {
+		errno = ENOTSUPP;
+		return -1;
+	}
+	
+	if (!http->raw) {
+		const char *method;
+		char *url;
+		
+		http->raw = http_connect (http->service, http->url);
+		if (!http->raw)
+			return -1;
+		
+		switch (http->method) {
+		case CAMEL_HTTP_METHOD_GET:
+			method = "GET";
+			break;
+		case CAMEL_HTTP_METHOD_HEAD:
+			method = "HEAD";
+			break;
+		}
+		
+		url = camel_url_to_string (http->url, 0);
+		if (camel_stream_printf (http->raw, "%s %s HTTP/1.1\r\nHost: %s\r\n\r\n",
+					 method, http->url->path ? http->url->path : "/",
+					 http->url->host) == -1 ||
+		    camel_stream_flush (http->raw) == -1) {
+			camel_object_unref (CAMEL_OBJECT (http->raw));
+			http->raw = NULL;
+			return -1;
+		}
+		g_free (url);
+		
+		if (http_get_headers (http) == -1)
+			return -1;
+	}
+	
+	return camel_stream_read (http->raw, buffer, n);
+}
+
+static ssize_t
+stream_write (CamelStream *stream, const char *buffer, size_t n)
+{
+	CamelHttpStream *http = CAMEL_HTTP_STREAM (stream);
+	
+	if (http->method == CAMEL_HTTP_METHOD_GET || http->method == CAMEL_HTTP_METHOD_HEAD) {
+		errno = ENOTSUPP;
+		return -1;
+	}
+	
+	return -1;
+#if 0	
+	if (!http->raw) {
+		const char *method;
+		char *url;
+		
+		http->raw = http_connect (http->service, http->url);
+		if (!http->raw)
+			return -1;
+		
+		switch (http->method) {
+		case CAMEL_HTTP_METHOD_PUT:
+			method = "PUT";
+			break;
+		case CAMEL_HTTP_METHOD_POST:
+			method = "POST";
+			break;
+		}
+		
+		url = camel_url_to_string (http->url, 0);
+		if (camel_stream_printf (http->raw, "%s %s HTTP/1.1\r\nHost: %s\r\n\r\n",
+					 method, http->url->path ? http->url->path : "/",
+					 http->url->host) == -1 ||
+		    camel_stream_flush (http->raw) == -1) {
+			camel_object_unref (CAMEL_OBJECT (http->raw));
+			http->raw = NULL;
+			return -1;
+		}
+		g_free (url);
+		
+		if (http_get_headers (http) == -1)
+			return -1;
+	}
+	
+	return camel_stream_write (http->raw, buffer, n);
+#endif
+}
+
+static int
+stream_flush (CamelStream *stream)
+{
+	if (stream->raw)
+		return camel_stream_flush (stream->raw);
+	else
+		return 0;
+}
+
+static int
+stream_close (CamelStream *stream)
+{
+	CamelHttpStream *http = CAMEL_HTTP_STREAM (stream);
+	
+	if (http->raw) {
+		if (camel_stream_close (http->raw) == -1)
+			return -1;
+		
+		camel_object_unref (CAMEL_OBJECT (http->raw));
+		http->raw = NULL;
+	}
+	
+	return 0;
+}
+
+static int
+stream_reset (CamelStream *stream)
+{
+	CamelHttpStream *http = CAMEL_HTTP_STREAM (stream);
+	
+	if (http->raw) {
+		camel_stream_close (http->raw);
+		camel_object_unref (CAMEL_OBJECT (http->raw));
+		http->raw = NULL;
+	}
+	
+	return 0;
+};
diff --git a/camel/camel-http-stream.h b/camel/camel-http-stream.h
new file mode 100644
index 0000000000..1ffa18d4bd
--- /dev/null
+++ b/camel/camel-http-stream.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ *  Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ *  Copyright 2002 Ximain, Inc. (www.ximian.com)
+ *
+ *  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
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifndef __CAMEL_HTTP_STREAM_H__
+#define __CAMEL_HTTP_STREAM_H__
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus */
+
+#include <camel/camel-mime-utils.h>
+#include <camel/camel-service.h>
+#include <camel/camel-stream.h>
+#include <camel/camel-url.h>
+
+#define CAMEL_HTTP_STREAM_TYPE     (camel_http_stream_get_type ())
+#define CAMEL_HTTP_STREAM(obj)     (CAMEL_CHECK_CAST((obj), CAMEL_HTTP_STREAM_TYPE, CamelHttpStream))
+#define CAMEL_HTTP_STREAM_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_HTTP_STREAM_TYPE, CamelHttpStreamClass))
+#define CAMEL_IS_HTTP_STREAM(o)    (CAMEL_CHECK_TYPE((o), CAMEL_HTTP_STREAM_TYPE))
+
+typedef enum {
+	/*CAMEL_HTTP_METHOD_OPTIONS,*/
+	CAMEL_HTTP_METHOD_GET,
+	CAMEL_HTTP_METHOD_HEAD,
+	/*CAMEL_HTTP_METHOD_POST,*/
+	/*CAMEL_HTTP_METHOD_PUT,*/
+	/*CAMEL_HTTP_METHOD_DELETE,*/
+	/*CAMEL_HTTP_METHOD_TRACE,*/
+	/*CAMEL_HTTP_METHOD_CONNECT*/
+} CamelHttpMethod;
+
+
+typedef struct _CamelHttpStreamClass CamelHttpStreamClass;
+typedef struct _CamelHttpStream CamelHttpStream;
+
+struct _CamelHttpStream {
+	CamelStream parent_object;
+	
+	CamelContentType *content_type;
+	struct _header_raw *headers;
+	
+	CamelHttpMethod method;
+	CamelService *service;
+	CamelURL *url;
+	
+	CamelStream *raw;
+};
+
+struct _CamelHttpStreamClass {
+	CamelStreamClass parent_class;
+	
+	/* Virtual methods */
+};
+
+/* Standard Camel function */
+CamelType camel_http_stream_get_type (void);
+
+/* public methods */
+CamelStream *camel_http_stream_new (CamelHttpMethod method, CamelService *service, CamelURL *url);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __CAMEL_HTTP_STREAM_H__ */