some initial bits of the POP3 provider, to make Matt happy. Incomplete,

	* providers/pop3: some initial bits of the POP3 provider, to
	make Matt happy. Incomplete, untested, etc.

svn path=/trunk/; revision=2137

4 files changed, 460 insertions, 0 deletions

diff --git a/camel/providers/pop3/camel-pop3-folder.h b/camel/providers/pop3/camel-pop3-folder.h
new file mode 100644
index 0000000000..4af0801ab8
--- /dev/null
+++ b/camel/providers/pop3/camel-pop3-folder.h
@@ -0,0 +1,76 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-pop3-folder.h : Class for a POP3 folder */
+
+/* 
+ * Author:
+ *   Dan Winship <danw@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.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 Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+
+#ifndef CAMEL_POP3_FOLDER_H
+#define CAMEL_POP3_FOLDER_H 1
+
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus }*/
+
+#include <gtk/gtk.h>
+#include "camel-folder.h"
+#include "camel-pop3-summary.h"
+
+#define CAMEL_POP3_FOLDER_TYPE     (camel_pop3_folder_get_type ())
+#define CAMEL_POP3_FOLDER(obj)     (GTK_CHECK_CAST((obj), CAMEL_POP3_FOLDER_TYPE, CamelPop3Folder))
+#define CAMEL_POP3_FOLDER_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_POP3_FOLDER_TYPE, CamelPop3FolderClass))
+#define IS_CAMEL_POP3_FOLDER(o)    (GTK_CHECK_TYPE((o), CAMEL_POP3_FOLDER_TYPE))
+
+
+typedef struct {
+	CamelFolder parent_object;
+
+	CamelFolderSummary *summary;
+	/* the external summary is intended to be read by callers */
+	
+	CamelPop3Summary *internal_summary; /* internal summary object */
+	GList  *uid_array;
+
+} CamelPop3Folder;
+
+
+
+typedef struct {
+	CamelFolderClass parent_class;
+
+	/* Virtual methods */	
+	
+} CamelPop3FolderClass;
+
+
+/* public methods */
+
+/* Standard Gtk function */
+GtkType camel_pop3_folder_get_type (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* CAMEL_POP3_FOLDER_H */
diff --git a/camel/providers/pop3/camel-pop3-provider.c b/camel/providers/pop3/camel-pop3-provider.c
new file mode 100644
index 0000000000..0a8c97bbda
--- /dev/null
+++ b/camel/providers/pop3/camel-pop3-provider.c
@@ -0,0 +1,54 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-pop3-provider.c: pop3 provider registration code */
+
+/* 
+ * Authors :
+ *   Dan Winship <danw@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.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 Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "config.h"
+#include "camel-pop3-store.h"
+#include "camel-provider.h"
+#include "camel-log.h"
+
+
+static CamelProvider _pop3_provider = {
+	(GtkType) 0,
+	PROVIDER_STORE,
+	PROVIDER_REMOTE,
+	"POP3",
+	"Camel default POP3 provider",
+	"This is a provider that reads from a POP3 server.",
+	(GModule *) NULL
+};
+
+CamelProvider *
+camel_provider_module_init (void);
+
+
+CamelProvider *
+camel_provider_module_init (void)
+{
+	_pop3_provider.object_type = camel_pop3_store_get_type();
+	return &_pop3_provider;
+}
+
+
+
diff --git a/camel/providers/pop3/camel-pop3-store.c b/camel/providers/pop3/camel-pop3-store.c
new file mode 100644
index 0000000000..5e5e9fe4e9
--- /dev/null
+++ b/camel/providers/pop3/camel-pop3-store.c
@@ -0,0 +1,254 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-pop3-store.c : class for an pop3 store */
+
+/* 
+ * Authors:
+ *   Dan Winship <danw@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.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 Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "camel-pop3-store.h"
+#include "camel-pop3-folder.h"
+#include "camel-stream-buffer.h"
+#include "camel-stream-fs.h"
+#include "camel-exception.h"
+#include "md5-utils.h"
+#include "url-util.h"
+
+
+
+static gboolean _connect (CamelService *service, CamelException *ex);
+
+
+static void
+camel_pop3_store_class_init (CamelPop3StoreClass *camel_pop3_store_class)
+{
+	CamelServiceClass *camel_service_class =
+		CAMEL_SERVICE_CLASS (camel_pop3_store_class);
+	
+	/* virtual method overload */
+	camel_service_class->connect = _connect;
+}
+
+
+
+static void
+camel_pop3_store_init (gpointer object, gpointer klass)
+{
+	CamelService *service = CAMEL_SERVICE (object);
+
+	service->url_flags = ( CAMEL_SERVICE_URL_NEED_USER |
+			       CAMEL_SERVICE_URL_NEED_HOST );
+}
+
+
+
+
+GtkType
+camel_pop3_store_get_type (void)
+{
+	static GtkType camel_pop3_store_type = 0;
+
+	if (!camel_pop3_store_type) {
+		GtkTypeInfo camel_pop3_store_info =	
+		{
+			"CamelPop3Store",
+			sizeof (CamelPop3Store),
+			sizeof (CamelPop3StoreClass),
+			(GtkClassInitFunc) camel_pop3_store_class_init,
+			(GtkObjectInitFunc) camel_pop3_store_init,
+				/* reserved_1 */ NULL,
+				/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+
+		camel_pop3_store_type = gtk_type_unique (CAMEL_STORE_TYPE, &camel_pop3_store_info);
+	}
+
+	return camel_pop3_store_type;
+}
+
+
+
+static gboolean
+_connect (CamelService *service, CamelException *ex)
+{
+	struct hostent *h;
+	struct sockaddr_in sin;
+	int fd, status, apoplen;
+	char *buf, *apoptime, *pass;
+	CamelPop3Store *store = CAMEL_POP3_STORE (service);
+
+	if (!CAMEL_SERVICE_CLASS (service)->connect (service, ex))
+		return FALSE;
+
+	h = gethostbyname (service->url->host);
+	if (!h) {
+		extern int h_errno;
+		if (h_errno == HOST_NOT_FOUND || h_errno == NO_DATA) {
+			camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
+					      "No such host %s.",
+					      service->url->host);
+		} else {
+			camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+					      "Temporarily unable to look up "
+					      "hostname %s.",
+					      service->url->host);
+		}
+		return FALSE;
+	}
+
+	sin.sin_family = h->h_addrtype;
+	sin.sin_port = htons (atoi (service->url->port)); /* XXX */
+	memcpy (&sin.sin_addr, h->h_addr, sizeof (sin.sin_addr));
+
+	fd = socket (h->h_addrtype, SOCK_STREAM, 0);
+	if (fd == -1 ||
+	    connect (fd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
+		camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
+				      "Could not connect to %s (port %s): %s",
+				      service->url->host, service->url->port,
+				      strerror(errno));
+		if (fd > -1)
+			close (fd);
+		return FALSE;
+	}
+
+	store->stream = CAMEL_STREAM_BUFFER (camel_stream_buffer_new (camel_stream_fs_new_with_fd (fd), CAMEL_STREAM_BUFFER_READ));
+
+	/* Read the greeting, note APOP timestamp, if any. */
+	buf = camel_stream_buffer_read_line (CAMEL_STREAM_BUFFER (store->stream));
+	if (!buf)
+		return -1;
+	apoptime = strchr (buf, '<');
+	if (apoptime) {
+		int len = strcspn (apoptime, ">");
+
+		apoptime = g_strndup (apoptime, len);
+	} else
+		apoptime = NULL;
+	g_free (buf);
+
+	/* Authenticate via APOP if we can, USER/PASS if we can't. */
+	status = CAMEL_POP3_FAIL;
+	if (apoptime && apoptime[apoplen] == '>') {
+		char *secret, md5asc[32], *d;
+		unsigned char md5sum[16], *s;
+
+		secret = g_strdup_printf("%.*s%s", apoplen + 1, apoptime,
+					 pass);
+		md5_get_digest(secret, strlen(secret), md5sum);
+		g_free(secret);
+
+		for (s = md5sum, d = md5asc; d < md5asc + 32; s++, d += 2)
+			sprintf(d, "%.2x", *s);
+
+		status = camel_pop3_command(store->stream, NULL, "APOP %s %s",
+					    service->url->user, md5asc);
+	}
+	g_free(buf);
+
+	if (status != CAMEL_POP3_OK ) {
+		status = camel_pop3_command(store->stream, NULL, "USER %s",
+					    service->url->user);
+		if (status == CAMEL_POP3_OK) {
+			status = camel_pop3_command(store->stream, NULL,
+						    "PASS %s", pass);
+		}
+	}
+
+	if (status != CAMEL_POP3_OK) {
+		camel_exception_set (ex,
+				     CAMEL_EXCEPTION_SERVICE_CANT_AUTHENTICATE,
+				     "Unable to authenticate to POP server.");
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+int
+camel_pop3_command (CamelStreamBuffer *stream, char **ret, char *fmt, ...)
+{
+	char *cmdbuf, *respbuf;
+	va_list ap;
+	int status, i;
+	GPtrArray *data;
+
+	va_start (ap, fmt);
+	cmdbuf = g_strdup_vprintf (fmt, ap);
+	va_end (ap);
+
+	/* Send the command */
+	camel_stream_write (CAMEL_STREAM (stream), cmdbuf, strlen (cmdbuf));
+	g_free (cmdbuf);
+	camel_stream_write (CAMEL_STREAM (stream), "\r\n", 2);
+
+	/* Read the response */
+	respbuf = camel_stream_buffer_read_line (stream);
+	if (!strncmp (respbuf, "+OK", 3))
+		status = CAMEL_POP3_OK;
+	else if (!strncmp (respbuf, "-ERR", 4))
+		status = CAMEL_POP3_ERR;
+	else
+		status = CAMEL_POP3_FAIL;
+	g_free (respbuf);
+
+	if (status != CAMEL_POP3_OK || !ret)
+		return status;
+
+	/* Read the additional data. */
+	data = g_ptr_array_new ();
+	while (1) {
+		respbuf = camel_stream_buffer_read_line (stream);
+		if (!respbuf) {
+			status = CAMEL_POP3_FAIL;
+			break;
+		}
+
+		if (!strcmp (respbuf, "."))
+			break;
+		if (*respbuf == '.')
+			memmove (respbuf, respbuf + 1, strlen (respbuf));
+		g_ptr_array_add (data, respbuf);
+	}
+
+	if (status == CAMEL_POP3_OK) {
+		g_ptr_array_add (data, NULL);
+		*ret = g_strjoinv ("\n", (char **)data->pdata);
+	}
+
+	for (i = 0; i < data->len; i++)
+		g_free (data->pdata[i]);
+	g_ptr_array_free (data, TRUE);
+
+	return status;
+}
diff --git a/camel/providers/pop3/camel-pop3-store.h b/camel/providers/pop3/camel-pop3-store.h
new file mode 100644
index 0000000000..bf99cfd8b4
--- /dev/null
+++ b/camel/providers/pop3/camel-pop3-store.h
@@ -0,0 +1,76 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-pop3-store.h : class for an pop3 store */
+
+/* 
+ * Authors:
+ *   Dan Winship <danw@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.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 Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+
+#ifndef CAMEL_POP3_STORE_H
+#define CAMEL_POP3_STORE_H 1
+
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus }*/
+
+#include <gtk/gtk.h>
+#include "camel-types.h"
+#include "camel-store.h"
+
+#define CAMEL_POP3_STORE_TYPE     (camel_pop3_store_get_type ())
+#define CAMEL_POP3_STORE(obj)     (GTK_CHECK_CAST((obj), CAMEL_POP3_STORE_TYPE, CamelPop3Store))
+#define CAMEL_POP3_STORE_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_POP3_STORE_TYPE, CamelPop3StoreClass))
+#define IS_CAMEL_POP3_STORE(o)    (GTK_CHECK_TYPE((o), CAMEL_POP3_STORE_TYPE))
+
+
+typedef struct {
+	CamelStore parent_object;
+
+	CamelStreamBuffer *stream;
+	
+} CamelPop3Store;
+
+
+
+typedef struct {
+	CamelStoreClass parent_class;
+
+} CamelPop3StoreClass;
+
+
+/* public methods */
+
+/* support functions */
+enum { CAMEL_POP3_OK, CAMEL_POP3_ERR, CAMEL_POP3_FAIL };
+int camel_pop3_command (CamelStreamBuffer *stream, char **ret, char *fmt, ...);
+
+/* Standard Gtk function */
+GtkType camel_pop3_store_get_type (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* CAMEL_POP3_STORE_H */
+
+