/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors:
* Dan Winship <danw@ximian.com>
*
* Copyright 2000, 2001 Ximian, Inc.
*
* 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 <ctype.h> /* for isprint */
#include <string.h> /* for strstr */
#include <fcntl.h>
#include <liboaf/liboaf.h>
#include <libgnome/libgnome.h>
#include <libgnomevfs/gnome-vfs-mime-info.h>
#include <libgnomevfs/gnome-vfs-mime-handlers.h>
#include <gal/widgets/e-unicode.h>
#include <camel/camel-mime-utils.h>
#include <camel/camel-pgp-mime.h>
#include <camel/camel-stream-null.h>
#include <shell/e-setup.h>
#include <e-util/e-html-utils.h>
#include "mail.h"
#include "mail-tools.h"
#include "mail-display.h"
#include "mail-mt.h"
#include "mail-crypto.h"
static char *get_data_wrapper_text (CamelDataWrapper *data);
static char *try_inline_pgp (char *start, CamelMimePart *part, MailDisplay *md);
static char *try_inline_pgp_sig (char *start, CamelMimePart *part, MailDisplay *md);
static char *try_uudecoding (char *start, CamelMimePart *part, MailDisplay *md);
static char *try_inline_binhex (char *start, CamelMimePart *part, MailDisplay *md);
static void decode_pgp (CamelStream *ciphertext, CamelStream *plaintext, MailDisplay *md);
static gboolean handle_text_plain (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_text_plain_flowed (char *text,
MailDisplay *md);
static gboolean handle_text_enriched (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_text_html (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_image (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_mixed (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_related (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_alternative (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_appledouble (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_encrypted (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_multipart_signed (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_message_rfc822 (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
static gboolean handle_message_external_body (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
#ifdef APPLICATION_PGP_IS_NO_LONGER_SUPPORTED
static gboolean handle_application_pgp (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
#endif /* APPLICATION_PGP_IS_NO_LONGER_SUPPORTED */
static gboolean handle_via_bonobo (CamelMimePart *part,
const char *mime_type,
MailDisplay *md);
/* writes the header info for a mime message into an html stream */
static void write_headers (CamelMimeMessage *message, MailDisplay *md);
/* dispatch html printing via mimetype */
static gboolean format_mime_part (CamelMimePart *part, MailDisplay *md);
static void
free_url (gpointer key, gpointer value, gpointer data)
{
g_free (key);
if (data)
g_byte_array_free (value, TRUE);
}
static void
free_part_urls (gpointer urls)
{
g_hash_table_foreach (urls, free_url, NULL);
g_hash_table_destroy (urls);
}
static void
free_data_urls (gpointer urls)
{
g_hash_table_foreach (urls, free_url, GINT_TO_POINTER (1));
g_hash_table_destroy (urls);
}
static char *
add_url (const char *kind, char *url, gpointer data, MailDisplay *md)
{
GHashTable *urls;
gpointer old_key, old_value;
urls = g_datalist_get_data (md->data, kind);
g_return_val_if_fail (urls != NULL, NULL);
if (g_hash_table_lookup_extended (urls, url, &old_key, &old_value)) {
g_free (url);
url = old_key;
}
g_hash_table_insert (urls, url, data);
return url;
}
/**
* mail_format_mime_message:
* @mime_message: the input mime message
* @md: the MailDisplay to render into
*
* Writes a CamelMimeMessage out into a MailDisplay
**/
void
mail_format_mime_message (CamelMimeMessage *mime_message, MailDisplay *md)
{
GHashTable *urls;
g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message));
urls = g_datalist_get_data (md->data, "part_urls");
if (!urls) {
urls = g_hash_table_new (g_str_hash, g_str_equal);
g_datalist_set_data_full (md->data, "part_urls", urls,
free_part_urls);
}
urls = g_datalist_get_data (md->data, "data_urls");
if (!urls) {
urls = g_hash_table_new (g_str_hash, g_str_equal);
g_datalist_set_data_full (md->data, "data_urls", urls,
free_data_urls);
}
/* ok, so they're not urls. so sue me. */
urls = g_datalist_get_data (md->data, "attachment_states");
if (!urls) {
urls = g_hash_table_new (g_direct_hash, g_direct_equal);
g_datalist_set_data_full (md->data, "attachment_states", urls,
(GDestroyNotify) g_hash_table_destroy);
}
write_headers (mime_message, md);
format_mime_part (CAMEL_MIME_PART (mime_message), md);
}
/**
* mail_format_raw_message:
* @mime_message: the input mime message
* @md: the MailDisplay to render into
*
* Writes a CamelMimeMessage source out into a MailDisplay
**/
void
mail_format_raw_message (CamelMimeMessage *mime_message, MailDisplay *md)
{
char *text, *html;
g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message));
if (!mail_content_loaded (CAMEL_DATA_WRAPPER (mime_message), md,
TRUE, NULL, NULL))
return;
mail_html_write (md->html, md->stream, "<table cellspacing=0 cellpadding=10 width=\"100%%\"><tr><td><tt>\n");
text = get_data_wrapper_text (CAMEL_DATA_WRAPPER (mime_message));
html = e_text_to_html (text, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_SPACES | E_TEXT_TO_HTML_ESCAPE_8BIT);
g_free (text);
gtk_html_write (md->html, md->stream, html, strlen (html));
g_free (html);
mail_html_write (md->html, md->stream, "</tt></td></tr></table>");
}
static const char *
get_cid (CamelMimePart *part, MailDisplay *md)
{
char *cid;
static int fake_cid_counter = 0;
/* If we have a real Content-ID, use it. If we don't,
* make a (syntactically invalid, unique) fake one.
*/
if (camel_mime_part_get_content_id (part)) {
cid = g_strdup_printf ("cid:%s",
camel_mime_part_get_content_id (part));
} else
cid = g_strdup_printf ("cid:@@@%d", fake_cid_counter++);
return add_url ("part_urls", cid, part, md);
}
static const char *
get_location (CamelMimePart *part, MailDisplay *md)
{
const char *loc;
/* FIXME: relative URLs */
loc = camel_mime_part_get_content_location (part);
if (!loc)
return NULL;
return add_url ("part_urls", g_strdup (loc), part, md);
}
static const char *
get_url_for_icon (const char *icon_name, MailDisplay *md)
{
char *icon_path, buf[1024], *url;
int fd, nread;
GByteArray *ba;
/* FIXME: cache */
if (*icon_name == '/')
icon_path = g_strdup (icon_name);
else {
icon_path = gnome_pixmap_file (icon_name);
if (!icon_path)
return "file:///dev/null";
}
fd = open (icon_path, O_RDONLY);
g_free (icon_path);
if (fd == -1)
return "file:///dev/null";
ba = g_byte_array_new ();
while (1) {
nread = read (fd, buf, sizeof (buf));
if (nread < 1)
break;
g_byte_array_append (ba, buf, nread);
}
close (fd);
url = g_strdup_printf ("x-evolution-data:%p", ba);
return add_url ("data_urls", url, ba, md);
}
static GHashTable *mime_handler_table, *mime_function_table;
static void
setup_mime_tables (void)
{
mime_handler_table = g_hash_table_new (g_str_hash, g_str_equal);
mime_function_table = g_hash_table_new (g_str_hash, g_str_equal);
g_hash_table_insert (mime_function_table, "text/plain",
handle_text_plain);
g_hash_table_insert (mime_function_table, "text/richtext",
handle_text_enriched);
g_hash_table_insert (mime_function_table, "text/enriched",
handle_text_enriched);
g_hash_table_insert (mime_function_table, "text/html",
handle_text_html);
g_hash_table_insert (mime_function_table, "image/gif",
handle_image);
g_hash_table_insert (mime_function_table, "image/jpeg",
handle_image);
g_hash_table_insert (mime_function_table, "image/png",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-png",
handle_image);
g_hash_table_insert (mime_function_table, "image/tiff",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-bmp",
handle_image);
g_hash_table_insert (mime_function_table, "image/bmp",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-cmu-raster",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-ico",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-portable-anymap",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-portable-bitmap",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-portable-graymap",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-portable-pixmap",
handle_image);
g_hash_table_insert (mime_function_table, "image/x-xpixmap",
handle_image);
g_hash_table_insert (mime_function_table, "message/rfc822",
handle_message_rfc822);
g_hash_table_insert (mime_function_table, "message/news",
handle_message_rfc822);
g_hash_table_insert (mime_function_table, "message/external-body",
handle_message_external_body);
g_hash_table_insert (mime_function_table, "multipart/alternative",
handle_multipart_alternative);
g_hash_table_insert (mime_function_table, "multipart/related",
handle_multipart_related);
g_hash_table_insert (mime_function_table, "multipart/mixed",
handle_multipart_mixed);
g_hash_table_insert (mime_function_table, "multipart/appledouble",
handle_multipart_appledouble);
g_hash_table_insert (mime_function_table, "multipart/encrypted",
handle_multipart_encrypted);
g_hash_table_insert (mime_function_table, "multipart/signed",
handle_multipart_signed);
#ifdef APPLICATION_PGP_IS_NO_LONGER_SUPPORTED
/* Some broken mailers, such as The Bat! send pgp
* signed/encrypted messages with a content-type of
* application/pgp which basically means it's a text/plain but
* either signed or encrypted. */
g_hash_table_insert (mime_function_table, "application/pgp",
handle_application_pgp);
#endif /* APPLICATION_PGP_IS_NO_LONGER_SUPPORTED */
/* RFC 2046 says unrecognized text subtypes can be treated
* as text/plain (as long as you recognize the character set),
* and unrecognized multipart subtypes as multipart/mixed. */
g_hash_table_insert (mime_function_table, "text/*",
handle_text_plain);
g_hash_table_insert (mime_function_table, "multipart/*",
handle_multipart_mixed);
}
static gboolean
component_supports (OAF_ServerInfo *component, const char *mime_type)
{
OAF_Property *prop;
CORBA_sequence_CORBA_string stringv;
int i;
prop = oaf_server_info_prop_find (component,
"bonobo:supported_mime_types");
if (!prop || prop->v._d != OAF_P_STRINGV)
return FALSE;
stringv = prop->v._u.value_stringv;
for (i = 0; i < stringv._length; i++) {
if (!g_strcasecmp (mime_type, stringv._buffer[i]))
return TRUE;
}
return FALSE;
}
/**
* mail_lookup_handler:
* @mime_type: a MIME type
*
* Looks up the MIME type in its own tables and GNOME-VFS's and returns
* a MailMimeHandler structure detailing the component, application,
* and built-in handlers (if any) for that MIME type. (If the component
* is non-%NULL, the built-in handler will always be handle_via_bonobo().)
* The MailMimeHandler's @generic field is set if the match was for the
* MIME supertype rather than the exact type.
*
* Return value: a MailMimeHandler (which should not be freed), or %NULL
* if no handlers are available.
**/
MailMimeHandler *
mail_lookup_handler (const char *mime_type)
{
MailMimeHandler *handler;
char *mime_type_main;
if (mime_handler_table == NULL)
setup_mime_tables ();
/* See if we've already found it. */
handler = g_hash_table_lookup (mime_handler_table, mime_type);
if (handler)
return handler;
/* No. Create a new one and look up application and full type
* handler. If we find a builtin, create the handler and
* register it.
*/
handler = g_new0 (MailMimeHandler, 1);
handler->applications =
gnome_vfs_mime_get_short_list_applications (mime_type);
handler->builtin =
g_hash_table_lookup (mime_function_table, mime_type);
if (handler->builtin) {
handler->generic = FALSE;
goto reg;
}
/* Try for a exact component match. */
handler->component = gnome_vfs_mime_get_default_component (mime_type);
if (handler->component &&
component_supports (handler->component, mime_type)) {
handler->generic = FALSE;
handler->builtin = handle_via_bonobo;
goto reg;
}
/* Try for a generic builtin match. */
mime_type_main = g_strdup_printf ("%.*s/*",
(int)strcspn (mime_type, "/"),
mime_type);
handler->builtin = g_hash_table_lookup (mime_function_table,
mime_type_main);
g_free (mime_type_main);
if (handler->builtin) {
handler->generic = TRUE;
if (handler->component) {
CORBA_free (handler->component);
handler->component = NULL;
}
goto reg;
}
/* Try for a generic component match. */
if (handler->component) {
handler->generic = TRUE;
handler->builtin = handle_via_bonobo;
goto reg;
}
/* If we at least got an application, use that. */
if (handler->applications) {
handler->generic = TRUE;
goto reg;
}
/* Nada. */
g_free (handler);
return NULL;
reg:
g_hash_table_insert (mime_handler_table, g_strdup (mime_type),
handler);
return handler;
}
/* An "anonymous" MIME part is one that we shouldn't call attention
* to the existence of, but simply display.
*/
static gboolean
is_anonymous (CamelMimePart *part, const char *mime_type)
{
if (!g_strncasecmp (mime_type, "multipart/", 10) ||
!g_strncasecmp (mime_type, "message/", 8))
return TRUE;
if (!g_strncasecmp (mime_type, "text/", 5) &&
!camel_mime_part_get_filename (part))
return TRUE;
return FALSE;
}
/**
* mail_part_is_inline:
* @part: a CamelMimePart
*
* Return value: whether or not the part should/will be displayed inline.
**/
gboolean
mail_part_is_inline (CamelMimePart *part)
{
const char *disposition;
CamelContentType *content_type;
char *type;
gboolean anon;
/* If it has an explicit disposition, return that. */
disposition = camel_mime_part_get_disposition (part);
if (disposition)
return g_strcasecmp (disposition, "inline") == 0;
/* Certain types should default to inline. FIXME: this should
* be customizable.
*/
content_type = camel_mime_part_get_content_type (part);
if (!header_content_type_is (content_type, "message", "*"))
return TRUE;
#ifdef APPLICATION_PGP_IS_NO_LONGER_SUPPORTED
/* The Bat! and possibly a few other broken mailers send application/pgp
* parts instead of following rfc2015 because they SUCK!!! Since this part
* is really a text/plain part, we should show it inline.
*/
if (!header_content_type_is (content_type, "application", "pgp"))
return TRUE;
#endif /* APPLICATION_PGP_IS_NO_LONGER_SUPPORTED */
/* Otherwise, display it inline if it's "anonymous", and
* as an attachment otherwise.
*/
type = header_content_type_simple (content_type);
anon = is_anonymous (part, type);
g_free (type);
return anon;
}
enum inline_states {
I_VALID = (1 << 0),
I_ACTUALLY = (1 << 1),
I_DISPLAYED = (1 << 2)
};
static gint
get_inline_flags (CamelMimePart *part, MailDisplay *md)
{
GHashTable *asht;
gint val;
/* check if we already know. */
asht = g_datalist_get_data (md->data, "attachment_states");
val = GPOINTER_TO_INT (g_hash_table_lookup (asht, part));
if (val)
return val;
/* ok, we don't know. Figure it out. */
if (mail_part_is_inline (part))
val = (I_VALID | I_ACTUALLY | I_DISPLAYED);
else
val = (I_VALID);
g_hash_table_insert (asht, part, GINT_TO_POINTER (val));
return val;
}
gboolean
mail_part_is_displayed_inline (CamelMimePart *part, MailDisplay *md)
{
return (gboolean) (get_inline_flags (part, md) & I_DISPLAYED);
}
void
mail_part_toggle_displayed (CamelMimePart *part, MailDisplay *md)
{
GHashTable *asht = g_datalist_get_data (md->data, "attachment_states");
gpointer ostate, opart;
gint state;
if (g_hash_table_lookup_extended (asht, part, &opart, &ostate)) {
g_hash_table_remove (asht, part);
state = GPOINTER_TO_INT (ostate);
if (state & I_DISPLAYED)
state &= ~I_DISPLAYED;
else
state |= I_DISPLAYED;
} else {
state = I_VALID | I_DISPLAYED;
}
g_hash_table_insert (asht, part, GINT_TO_POINTER (state));
}
static void
attachment_header (CamelMimePart *part, const char *mime_type, MailDisplay *md)
{
char *htmlinfo, *html, *fmt;
const char *info;
/* Start the table, create the pop-up object. */
mail_html_write (md->html, md->stream,
"<table cellspacing=0 cellpadding=0>"
"<tr><td><table width=10 cellspacing=0 cellpadding=0><tr><td></td></tr></table></td>"
"<td><object classid=\"popup:%s\" type=\"%s\"></object></td>"
"<td><table width=3 cellspacing=0 cellpadding=0><tr><td></td></tr></table></td>"
"<td><font size=-1>",
get_cid (part, md), mime_type);
/* Write the MIME type */
info = gnome_vfs_mime_get_value (mime_type, "description");
html = e_text_to_html (info ? info : mime_type, 0);
htmlinfo = e_utf8_from_locale_string (html);
g_free (html);
fmt = e_utf8_from_locale_string (_("%s attachment"));
mail_html_write (md->html, md->stream, fmt, htmlinfo);
g_free (htmlinfo);
g_free (fmt);
/* Write the name, if we have it. */
info = camel_mime_part_get_filename (part);
if (info) {
htmlinfo = e_text_to_html (info, 0);
mail_html_write (md->html, md->stream, " (%s)", htmlinfo);
g_free (htmlinfo);
}
/* Write a description, if we have one. */
info = camel_mime_part_get_description (part);
if (info) {
htmlinfo = e_text_to_html (info, E_TEXT_TO_HTML_CONVERT_URLS);
mail_html_write (md->html, md->stream, ", \"%s\"", htmlinfo);
g_free (htmlinfo);
}
#if 0
/* Describe the click action, if any. */
if (action) {
mail_html_write (md->html, md->stream,
"<br>Click on the icon to %s.", action);
}
#endif
mail_html_write (md->html, md->stream,
"</font></td></tr><tr><td height=10><table height=10 cellspacing=0 cellpadding=0>"
"<tr><td></td></tr></table></td></tr></table>\n");
}
static gboolean
format_mime_part (CamelMimePart *part, MailDisplay *md)
{
CamelDataWrapper *wrapper;
char *mime_type;
MailMimeHandler *handler;
gboolean output;
int inline_flags;
/* Record URLs associated with this part */
get_cid (part, md);
get_location (part, md);
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
if (CAMEL_IS_MULTIPART (wrapper) &&
camel_multipart_get_number (CAMEL_MULTIPART (wrapper)) == 0) {
char *mesg;
mesg = e_utf8_from_locale_string (_("Could not parse MIME message. Displaying as source."));
mail_error_write (md->html, md->stream, "%s", mesg);
g_free (mesg);
if (mail_content_loaded (wrapper, md, TRUE, NULL, NULL))
handle_text_plain (part, "text/plain", md);
return TRUE;
}
mime_type = camel_data_wrapper_get_mime_type (wrapper);
g_strdown (mime_type);
handler = mail_lookup_handler (mime_type);
if (!handler) {
char *id_type;
/* Special case MIME types that we know that we can't
* display but are some kind of plain text to prevent
* evil infinite recursion.
*/
if (!strcmp (mime_type, "application/mac-binhex40")) {
handler = NULL;
} else {
id_type = mail_identify_mime_part (part, md);
if (id_type) {
g_free (mime_type);
mime_type = id_type;
handler = mail_lookup_handler (id_type);
}
}
}
inline_flags = get_inline_flags (part, md);
/* No header for anonymous inline parts. */
if (!((inline_flags & I_ACTUALLY) && is_anonymous (part, mime_type)))
attachment_header (part, mime_type, md);
if (handler && handler->builtin && inline_flags & I_DISPLAYED &&
mail_content_loaded (wrapper, md, TRUE, NULL, NULL))
output = (*handler->builtin) (part, mime_type, md);
else
output = TRUE;
g_free (mime_type);
return output;
}
/* flags for write_field_to_stream */
enum {
WRITE_BOLD=1,
WRITE_NOCOLUMNS=2,
};
static void
write_field_row_begin (const char *name, gint flags, GtkHTML *html, GtkHTMLStream *stream)
{
char *encoded_name;
gboolean bold = (flags & WRITE_BOLD);
gboolean nocolumns = (flags & WRITE_NOCOLUMNS);
encoded_name = e_utf8_from_gtk_string (GTK_WIDGET (html), name);
if (nocolumns) {
mail_html_write (html, stream, "<tr><td>%s%s:%s ",
bold ? "<b>" : "", encoded_name,
bold ? "</b>" : "");
} else {
mail_html_write (html, stream,
"<tr><%s align=\"right\" valign=\"top\">%s:"
"<b> </%s><td>",
bold ? "th" : "td", encoded_name, bold ? "th" : "td");
}
g_free (encoded_name);
}
static void
write_date (CamelMimeMessage *message, int flags, GtkHTML *html, GtkHTMLStream *stream)
{
char *datestr;
time_t date;
int offset;
write_field_row_begin (_("Date"), flags, html, stream);
date = camel_mime_message_get_date (message, &offset);
datestr = header_format_date (date, offset);
mail_html_write (html, stream, "%s</td> </tr>", datestr);
g_free (datestr);
}
static void
write_text_header (const char *name, const char *value, int flags, GtkHTML *html, GtkHTMLStream *stream)
{
char *encoded;
if (value && *value)
encoded = e_text_to_html (value, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
else
encoded = "";
write_field_row_begin (name, flags, html, stream);
mail_html_write (html, stream, "%s</td> </tr>", encoded);
if (value && *value)
g_free (encoded);
}
static gchar *
elide_quotes (const gchar *str)
{
gchar *cpy = g_strdup (str);
gchar *c = cpy;
if (c) {
while (*c) {
if (*c != '"')
++c;
}
}
return cpy;
}
static void
write_address (MailDisplay *md, const CamelInternetAddress *addr, const char *field_name, int flags)
{
const char *name, *email;
gint i;
if (addr == NULL || !camel_internet_address_get (addr, 0, NULL, NULL))
return;
write_field_row_begin (field_name, flags, md->html, md->stream);
i = 0;
while (camel_internet_address_get (addr, i, &name, &email)) {
CamelInternetAddress *subaddr;
gchar *addr_txt, *addr_url;
gboolean have_name = name && *name;
gboolean have_email = email && *email;
gchar *name_arg = NULL;
gchar *email_arg = NULL;
gchar *name_disp = NULL;
gchar *email_disp = NULL;
subaddr = camel_internet_address_new ();
camel_internet_address_add (subaddr, name, email);
addr_txt = camel_address_format (CAMEL_ADDRESS (subaddr));
addr_url = camel_url_encode (addr_txt, TRUE, NULL);
camel_object_unref (CAMEL_OBJECT (subaddr));
if (have_name) {
name_disp = e_text_to_html (name, 0);
}
if (have_email) {
email_arg = elide_quotes (email); /* should never be an issue */
email_disp = e_text_to_html (email, 0);
}
if (i)
mail_html_write (md->html, md->stream, ", ");
if (have_email || have_name) {
if (!have_email) {
email_arg = g_strdup ("???");
email_disp = g_strdup ("???");
}
if (have_name) {
mail_html_write (md->html, md->stream,
"%s <<a href=\"mailto:%s\">%s</a>>",
name_disp, addr_url, email_disp);
} else {
mail_html_write (md->html, md->stream,
"<a href=\"mailto:%s\">%s</a>",
addr_url, email_disp);
}
} else {
char *str;
str = e_utf8_from_locale_string (_("Bad Address"));
mail_html_write (md->html, md->stream, "<i>%s</i>", str);
g_free (str);
}
g_free (name_arg);
g_free (email_arg);
g_free (name_disp);
g_free (email_disp);
g_free (addr_txt);
g_free (addr_url);
i++;
}
mail_html_write (md->html, md->stream, "</td></tr>");
}
/* order of these must match write_header code */
static char *default_headers[] = {
"From", "Reply-To", "To", "Cc", "Bcc", "Subject", "Date",
};
/* return index of header in default_headers array */
static int
default_header_index(const char *name)
{
int i;
for (i=0;i<sizeof(default_headers)/sizeof(default_headers[0]);i++)
if (!g_strcasecmp(name, default_headers[i]))
return i;
return -1;
}
/* index is index of header in default_headers array */
static void
write_default_header(CamelMimeMessage *message, MailDisplay *md, int index, int flags)
{
switch(index) {
case 0:
write_address (md, camel_mime_message_get_from (message), _("From"), flags | WRITE_BOLD);
break;
case 1:
write_address (md, camel_mime_message_get_reply_to (message), _("Reply-To"), flags);
break;
case 2:
write_address(md, camel_mime_message_get_recipients(message, CAMEL_RECIPIENT_TYPE_TO),
_("To"), flags | WRITE_BOLD);
break;
case 3:
write_address (md, camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_CC),
_("Cc"), flags | WRITE_BOLD);
break;
case 4:
write_address (md, camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_BCC),
_("Bcc"), flags | WRITE_BOLD);
break;
case 5:
write_text_header (_("Subject"), camel_mime_message_get_subject (message),
flags | WRITE_BOLD, md->html, md->stream);
break;
case 6:
write_date (message, flags | WRITE_BOLD, md->html, md->stream);
break;
default:
g_assert_not_reached();
}
}
#define COLOR_IS_LIGHT(r, g, b) ((r + g + b) > (128 * 3))
static void
write_headers (CamelMimeMessage *message, MailDisplay *md)
{
gboolean full = (md->display_style == MAIL_CONFIG_DISPLAY_FULL_HEADERS);
char bgcolor[7], fontcolor[7];
GtkStyle *style = NULL;
int i;
/* My favorite thing to do...much around with colors so we respect people's stupid themes */
style = gtk_widget_get_style (GTK_WIDGET (md->html));
if (style) {
int state = GTK_WIDGET_STATE (GTK_WIDGET (md->html));
gushort r, g, b;
r = style->base[state].red / 256;
g = style->base[state].green / 256;
b = style->base[state].blue / 256;
if (COLOR_IS_LIGHT (r, g, b)) {
r *= 0.92;
g *= 0.92;
b *= 0.92;
} else {
r = 255 - (0.92 * (255 - r));
g = 255 - (0.92 * (255 - g));
b = 255 - (0.92 * (255 - b));
}
sprintf (bgcolor, "%.2X%.2X%.2X", r, g, b);
r = style->text[state].red;
g = style->text[state].green / 256;
b = style->text[state].blue / 256;
sprintf (fontcolor, "%.2X%.2X%.2X", r, g, b);
} else {
strcpy (bgcolor, "EEEEEE");
strcpy (fontcolor, "000000");
}
mail_html_write (md->html, md->stream,
"<table width=\"100%%\" cellpadding=0 cellspacing=0>"
"<tr><td colspan=3 height=10><table height=10 cellpadding=0 cellspacing=0>"
"<tr><td></td></tr></table></td></tr>"
"<tr><td><table width=10 cellpadding=0 cellspacing=0><tr><td></td></tr></table></td>"
"<td width=\"100%%\"><font color=\"#%s\">"
"<table bgcolor=\"#000000\" width=\"100%%\" "
"cellspacing=0 cellpadding=1><tr><td>"
"<table bgcolor=\"#%s\" width=\"100%%\" cellpadding=0 cellspacing=0>"
"<tr><td><table>\n", fontcolor, bgcolor);
if (full) {
struct _header_raw *header;
const char *charset;
CamelContentType *ct;
char *value;
ct = camel_mime_part_get_content_type(CAMEL_MIME_PART(message));
charset = header_content_type_param(ct, "charset");
charset = camel_charset_to_iconv(charset);
header = CAMEL_MIME_PART(message)->headers;
while (header) {
i = default_header_index(header->name);
if (i == -1) {
value = header_decode_string(header->value, charset);
write_text_header(header->name, value, WRITE_NOCOLUMNS, md->html, md->stream);
g_free(value);
} else
write_default_header(message, md, i, WRITE_NOCOLUMNS);
header = header->next;
}
} else {
for (i=0;i<sizeof(default_headers)/sizeof(default_headers[0]);i++)
write_default_header(message, md, i, 0);
}
mail_html_write (md->html, md->stream,
"</table></td></tr></table></td></tr></table></font></td>"
"<td><table width=10 cellpadding=0 cellspacing=0><tr><td></td></tr></table></td></tr>"
"</table>\n");
}
static void
load_offline_content (MailDisplay *md, gpointer data)
{
CamelDataWrapper *wrapper = data;
CamelStream *stream;
stream = camel_stream_null_new ();
camel_data_wrapper_write_to_stream (wrapper, stream);
camel_object_unref (CAMEL_OBJECT (stream));
camel_object_unref (CAMEL_OBJECT (wrapper));
}
gboolean
mail_content_loaded (CamelDataWrapper *wrapper, MailDisplay *md, gboolean redisplay, const gchar *url, GtkHTMLStream *handle)
{
if (!camel_data_wrapper_is_offline (wrapper))
return TRUE;
camel_object_ref (CAMEL_OBJECT (wrapper));
if (redisplay)
mail_display_redisplay_when_loaded (md, wrapper, load_offline_content, wrapper);
else
mail_display_stream_write_when_loaded (md, wrapper, url, load_offline_content, handle, wrapper);
return FALSE;
}
/* Return the contents of a data wrapper, or %NULL if it contains only
* whitespace.
*/
static char *
get_data_wrapper_text (CamelDataWrapper *wrapper)
{
CamelStream *memstream;
CamelStreamFilter *filtered_stream;
GByteArray *ba;
char *text, *end;
memstream = camel_stream_mem_new ();
ba = g_byte_array_new ();
camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (memstream), ba);
filtered_stream = camel_stream_filter_new_with_stream (memstream);
camel_object_unref (CAMEL_OBJECT (memstream));
if (wrapper->rawtext) {
CamelMimeFilterCharset *filter;
const char *charset;
charset = mail_config_get_default_charset ();
filter = camel_mime_filter_charset_new_convert (charset, "utf-8");
if (filter) {
camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (filter));
camel_object_unref (CAMEL_OBJECT (filter));
}
}
camel_data_wrapper_write_to_stream (wrapper, CAMEL_STREAM (filtered_stream));
camel_stream_flush (CAMEL_STREAM (filtered_stream));
camel_object_unref (CAMEL_OBJECT (filtered_stream));
for (text = ba->data, end = text + ba->len; text < end; text++) {
if (!isspace ((unsigned char)*text))
break;
}
if (text >= end) {
g_byte_array_free (ba, TRUE);
return NULL;
}
g_byte_array_append (ba, "", 1);
text = ba->data;
g_byte_array_free (ba, FALSE);
return text;
}
/*----------------------------------------------------------------------*
* Mime handling functions
*----------------------------------------------------------------------*/
struct {
char *start;
char * (*handler) (char *start, CamelMimePart *part, MailDisplay *md);
} text_specials[] = {
{ "-----BEGIN PGP MESSAGE-----\n", try_inline_pgp },
{ "-----BEGIN PGP SIGNED MESSAGE-----\n", try_inline_pgp_sig },
{ "begin ", try_uudecoding },
{ "(This file must be converted with BinHex 4.0)\n", try_inline_binhex }
};
#define NSPECIALS (sizeof (text_specials) / sizeof (*text_specials))
static gboolean
handle_text_plain (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
char *text, *p, *start;
CamelContentType *type;
gboolean check_specials;
const char *format;
int i;
text = get_data_wrapper_text (wrapper);
if (!text)
return FALSE;
/* Check for RFC 2646 flowed text. */
type = camel_mime_part_get_content_type (part);
format = header_content_type_param (type, "format");
if (format && !g_strcasecmp (format, "flowed"))
return handle_text_plain_flowed (text, md);
mail_html_write (md->html, md->stream,
"\n<!-- text/plain -->\n"
"<table cellspacing=0 cellpadding=10 width=\"100%%\"><tr><td>\n");
/* Only look for binhex and stuff if this is real text/plain.
* (and not, say, application/mac-binhex40 that mail-identify
* has decided to call text/plain because it starts with English
* text...)
*/
check_specials = !g_strcasecmp (mime_type, "text/plain");
p = text;
while (p && check_specials) {
/* Look for special cases. */
for (i = 0; i < NSPECIALS; i++) {
start = strstr (p, text_specials[i].start);
if (start && (start == p || start[-1] == '\n'))
break;
}
if (!start)
break;
/* Deal with special case */
if (start != p) {
/* the %.*s thing just grabs upto start-p chars; go read ANSI C */
mail_text_write (md->html, md->stream, "%.*s", start-p, p);
}
p = text_specials[i].handler (start, part, md);
if (p == start) {
/* Oops. That failed. Output this line normally and
* skip over it.
*/
p = strchr (start, '\n');
if (!p++)
break;
mail_text_write (md->html, md->stream, "%.*s", p-start, start);
} else if (p)
mail_html_write (md->html, md->stream, "<hr>");
}
/* Finish up (or do the whole thing if there were no specials). */
if (p)
mail_text_write (md->html, md->stream, "%s", p);
g_free (text);
mail_html_write (md->html, md->stream, "</td></tr></table>\n");
return TRUE;
}
#ifdef APPLICATION_PGP_IS_NO_LONGER_SUPPORTED
/* This is a special-case hack from broken mailers such as The Bat! */
static gboolean
handle_application_pgp (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
const char *format, *xaction;
CamelMimePart *mime_part;
CamelContentType *type;
char *text;
/* Check the format and x-action parameters. */
type = camel_mime_part_get_content_type (part);
format = header_content_type_param (type, "format");
xaction = header_content_type_param (type, "x-action");
/* We don't know how to handle non-text broken-pgp'd mime parts */
if (g_strcasecmp (format, "text") != 0)
return FALSE;
text = get_data_wrapper_text (wrapper);
if (!text)
return FALSE;
mime_part = camel_mime_part_new ();
if (!g_strcasecmp (xaction, "sign")) {
camel_mime_part_set_content (mime_part, text, strlen (text), "text/plain");
} else {
CamelStream *ciphertext, *plaintext;
GByteArray *buffer;
ciphertext = camel_stream_mem_new ();
camel_stream_write (ciphertext, text, strlen (text));
camel_stream_reset (ciphertext);
plaintext = camel_stream_mem_new ();
decode_pgp (ciphertext, plaintext, md);
camel_object_unref (CAMEL_OBJECT (ciphertext));
buffer = CAMEL_STREAM_MEM (plaintext)->buffer;
camel_mime_part_set_content (mime_part, buffer->data, buffer->len, "text/plain");
camel_object_unref (CAMEL_OBJECT (plaintext));
}
camel_medium_set_content_object (CAMEL_MEDIUM (part),
camel_medium_get_content_object (CAMEL_MEDIUM (mime_part)));
camel_object_unref (CAMEL_OBJECT (mime_part));
return handle_text_plain (part, "text/plain", md);
}
#endif /* APPLICATION_PGP_IS_NO_LONGER_SUPPORTED */
static gboolean
handle_text_plain_flowed (char *buf, MailDisplay *md)
{
char *text, *line, *eol, *p;
int prevquoting = 0, quoting, len, br_pending = 0;
guint32 citation_color = mail_config_get_citation_color ();
mail_html_write (md->html, md->stream,
"\n<!-- text/plain, flowed -->\n"
"<table cellspacing=0 cellpadding=10 width=\"100%%\"><tr><td>\n<tt>\n");
for (line = buf; *line; line = eol + 1) {
/* Process next line */
eol = strchr (line, '\n');
if (eol)
*eol = '\0';
quoting = 0;
for (p = line; *p == '>'; p++)
quoting++;
if (quoting != prevquoting) {
if (prevquoting == 0) {
mail_html_write (md->html, md->stream,
"<font color=\"#%06x\">",
citation_color);
if (br_pending)
br_pending--;
}
while (quoting > prevquoting) {
mail_html_write (md->html, md->stream,
"<blockquote>");
prevquoting++;
}
while (quoting < prevquoting) {
mail_html_write (md->html, md->stream,
"</blockquote>");
prevquoting--;
}
if (quoting == 0) {
mail_html_write (md->html, md->stream,
"</font>\n");
if (br_pending)
br_pending--;
}
}
if (*p == ' ')
p++;
len = strlen (p);
if (len == 0) {
br_pending++;
continue;
}
while (br_pending) {
mail_html_write (md->html, md->stream, "<br>\n");
br_pending--;
}
/* replace '<' with '<', etc. */
text = e_text_to_html (p, E_TEXT_TO_HTML_CONVERT_SPACES |
E_TEXT_TO_HTML_CONVERT_URLS);
if (text && *text)
mail_html_write (md->html, md->stream, "%s", text);
g_free (text);
if (p[len - 1] != ' ' || !strcmp (p, "-- "))
br_pending++;
if (!eol)
break;
}
g_free (buf);
mail_html_write (md->html, md->stream, "</tt>\n</td></tr></table>\n");
return TRUE;
}
static CamelMimePart *
fake_mime_part_from_data (const char *data, int len, const char *type)
{
CamelStream *memstream;
CamelDataWrapper *wrapper;
CamelMimePart *part;
memstream = camel_stream_mem_new_with_buffer (data, len);
wrapper = camel_data_wrapper_new ();
camel_data_wrapper_construct_from_stream (wrapper, memstream);
camel_data_wrapper_set_mime_type (wrapper, type);
camel_object_unref (CAMEL_OBJECT (memstream));
part = camel_mime_part_new ();
camel_medium_set_content_object (CAMEL_MEDIUM (part), wrapper);
camel_object_unref (CAMEL_OBJECT (wrapper));
camel_mime_part_set_disposition (part, "inline");
return part;
}
static void
destroy_part (CamelObject *root, gpointer event_data, gpointer user_data)
{
camel_object_unref (user_data);
}
static void
decode_pgp (CamelStream *ciphertext, CamelStream *plaintext, MailDisplay *md)
{
CamelException ex;
camel_exception_init (&ex);
/* FIXME: multipart parts */
if (g_datalist_get_data (md->data, "show_pgp")) {
CamelPgpContext *ctx;
ctx = camel_pgp_context_new (session, mail_config_get_pgp_type (),
mail_config_get_pgp_path ());
if (ctx) {
camel_pgp_decrypt (ctx, ciphertext, plaintext, &ex);
camel_object_unref (CAMEL_OBJECT (ctx));
camel_stream_reset (plaintext);
} else {
camel_exception_setv (&ex, CAMEL_EXCEPTION_SYSTEM,
_("No GPG/PGP program configured."));
}
if (!camel_exception_is_set (&ex))
return;
}
mail_html_write (md->html, md->stream,
"<table><tr valign=top><td>"
"<a href=\"x-evolution-decode-pgp:\">"
"<img src=\"%s\"></a></td><td>",
get_url_for_icon ("gnome-lockscreen.png", md));
if (camel_exception_is_set (&ex)) {
char *str;
str = e_utf8_from_locale_string (_("Encrypted message not displayed"));
mail_html_write (md->html, md->stream, "%s<br><br>\n", str);
g_free (str);
str = e_utf8_from_locale_string (camel_exception_get_description (&ex));
mail_error_write (md->html, md->stream, "%s", str);
camel_exception_clear (&ex);
g_free (str);
} else {
char *str1, *str2;
str1 = e_utf8_from_locale_string (_("Encrypted message"));
str2 = e_utf8_from_locale_string (_("Click icon to decrypt."));
mail_html_write (md->html, md->stream, "%s<br><br>\n%s",
str1, str2);
g_free (str1);
g_free (str2);
}
mail_html_write (md->html, md->stream, "</td></tr></table>");
}
static char *
try_inline_pgp (char *start, CamelMimePart *part, MailDisplay *md)
{
CamelStream *ciphertext, *plaintext;
GByteArray *buffer;
char *end;
end = strstr (start, "-----END PGP MESSAGE-----");
if (!end)
return start;
end += strlen ("-----END PGP MESSAGE-----") - 1;
mail_html_write (md->html, md->stream, "<hr>");
ciphertext = camel_stream_mem_new ();
camel_stream_write (ciphertext, start, end - start);
camel_stream_reset (ciphertext);
plaintext = camel_stream_mem_new ();
decode_pgp (ciphertext, plaintext, md);
camel_object_unref (CAMEL_OBJECT (ciphertext));
buffer = CAMEL_STREAM_MEM (plaintext)->buffer;
if (buffer && buffer->len) {
mail_html_write (md->html, md->stream,
"<table width=\"100%%\" border=2 "
"cellpadding=4><tr><td>");
mail_text_write (md->html, md->stream, "%.*s", buffer->len, buffer->data);
mail_html_write (md->html, md->stream, "</td></tr></table>");
}
camel_object_unref (CAMEL_OBJECT (plaintext));
return end;
}
static void
mail_write_authenticity (MailDisplay *md, CamelCipherValidity *valid)
{
char *str;
/* Now display the "seal-of-authenticity" or something... */
if (valid && camel_cipher_validity_get_valid (valid)) {
str = e_utf8_from_locale_string (
_("This message is digitally signed and "
"has been found to be authentic."));
mail_html_write (md->html, md->stream,
"<hr>\n<table><tr valign=top>"
"<td><img src=\"%s\"></td>"
"<td><font size=-1>%s<br><br>",
get_url_for_icon (EVOLUTION_ICONSDIR "/pgp-signature-ok.png", md),
str);
g_free (str);
} else {
str = e_utf8_from_locale_string (
_("This message is digitally signed but can "
"not be proven to be authentic."));
mail_html_write (md->html, md->stream,
"<hr>\n<table><tr valign=top>"
"<td><img src=\"%s\"></td>"
"<td><font size=-1>%s<br><br>",
get_url_for_icon (EVOLUTION_ICONSDIR "/pgp-signature-bad.png", md),
str);
g_free (str);
}
if (valid && camel_cipher_validity_get_description (valid)) {
mail_error_write (md->html, md->stream, "%s",
camel_cipher_validity_get_description (valid));
mail_html_write (md->html, md->stream, "<br><br>");
}
}
static char *
try_inline_pgp_sig (char *start, CamelMimePart *part, MailDisplay *md)
{
CamelCipherValidity *valid = NULL;
CamelPgpContext *context;
char *msg_start, *pgp_start, *sig_start, *sig_end;
pgp_start = strstr (start, "-----BEGIN PGP SIGNED MESSAGE-----");
if (pgp_start) {
/* skip over -----BEGIN PGP SIGNED MESSAGE----- */
msg_start = strchr (pgp_start, '\n');
if (!msg_start++)
return start;
/* skip over Hash: header */
msg_start = strchr (msg_start, '\n');
if (!msg_start++)
return start;
} else {
/* Some MUAs don't enclose the signed text in
-----BEGIN PGP SIGNED MESSAGE----- */
msg_start = start;
}
/* find the beginning of the signature block */
sig_start = strstr (msg_start, "-----BEGIN PGP SIGNATURE-----");
if (!sig_start)
return start;
/* find the end of the pgp signature block */
sig_end = strstr (sig_start, "-----END PGP SIGNATURE-----");
if (!sig_end)
return start;
sig_end += strlen ("-----END PGP SIGNATURE-----") + 1;
mail_html_write (md->html, md->stream, "<hr>");
context = camel_pgp_context_new (session, mail_config_get_pgp_type (),
mail_config_get_pgp_path ());
if (context) {
CamelMimeFilterCharset *charset_filter;
CamelStreamFilter *filtered_stream;
CamelStream *ciphertext;
CamelContentType *type;
const char *charset;
CamelException *ex;
ex = camel_exception_new ();
ciphertext = camel_stream_mem_new ();
type = camel_mime_part_get_content_type (part);
charset = header_content_type_param (type, "charset");
if (!charset)
charset = mail_config_get_default_charset ();
filtered_stream = camel_stream_filter_new_with_stream (ciphertext);
charset_filter = camel_mime_filter_charset_new_convert ("utf-8", charset);
if (charset_filter) {
camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (charset_filter));
camel_object_unref (CAMEL_OBJECT (charset_filter));
}
camel_stream_write (CAMEL_STREAM (filtered_stream), pgp_start, sig_end - pgp_start);
camel_stream_flush (CAMEL_STREAM (filtered_stream));
camel_object_unref (CAMEL_OBJECT (filtered_stream));
camel_stream_reset (ciphertext);
valid = camel_pgp_verify (context, ciphertext, NULL, ex);
camel_object_unref (CAMEL_OBJECT (ciphertext));
camel_object_unref (CAMEL_OBJECT (context));
camel_exception_free (ex);
}
mail_text_write (md->html, md->stream, "%.*s", sig_start - msg_start, msg_start);
mail_write_authenticity (md, valid);
mail_html_write (md->html, md->stream, "</font></td></table>");
camel_cipher_validity_free (valid);
return sig_end;
}
static char *
try_uudecoding (char *start, CamelMimePart *mime_part, MailDisplay *md)
{
int mode, len, state = 0;
char *filename, *estart, *p, *out, uulen = 0;
guint32 save = 0;
CamelMimePart *part;
/* Make sure it's a real uudecode begin line:
* begin [0-7]+ .*
*/
mode = strtoul (start + 6, &p, 8);
if (p == start + 6 || *p != ' ')
return start;
estart = strchr (start, '\n');
if (!estart)
return start;
while (isspace ((unsigned char)*p))
p++;
filename = g_strndup (p, estart++ - p);
/* Make sure there's an end line. */
p = strstr (p, "\nend\n");
if (!p) {
g_free (filename);
return start;
}
out = g_malloc (p - estart);
len = uudecode_step (estart, p - estart, out, &state, &save, &uulen);
part = fake_mime_part_from_data (out, len, "application/octet-stream");
g_free (out);
camel_mime_part_set_filename (part, filename);
g_free (filename);
camel_object_hook_event (CAMEL_OBJECT (md->current_message),
"finalize", destroy_part, part);
mail_html_write (md->html, md->stream, "<hr>");
format_mime_part (part, md);
return p + 4;
}
static char *
try_inline_binhex (char *start, CamelMimePart *mime_part, MailDisplay *md)
{
char *p;
CamelMimePart *part;
/* Find data start. */
p = strstr (start, "\n:");
if (!p)
return start;
/* And data end. */
p = strchr (p + 2, ':');
if (!p || (*(p + 1) != '\n' && *(p + 1) != '\0'))
return start;
p += 2;
part = fake_mime_part_from_data (start, p - start,
"application/mac-binhex40");
camel_object_hook_event (CAMEL_OBJECT (md->current_message),
"finalize", destroy_part, part);
mail_html_write (md->html, md->stream, "<hr>");
format_mime_part (part, md);
return p;
}
/* text/enriched (RFC 1896) or text/richtext (included in RFC 1341) */
static gboolean
handle_text_enriched (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
static GHashTable *translations = NULL;
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
GString *string;
GByteArray *ba;
char *text, *p, *xed;
int len, nofill = 0;
gboolean enriched;
if (!translations) {
translations = g_hash_table_new (g_strcase_hash,
g_strcase_equal);
g_hash_table_insert (translations, "bold", "<b>");
g_hash_table_insert (translations, "/bold", "</b>");
g_hash_table_insert (translations, "italic", "<i>");
g_hash_table_insert (translations, "/italic", "</i>");
g_hash_table_insert (translations, "fixed", "<tt>");
g_hash_table_insert (translations, "/fixed", "</tt>");
g_hash_table_insert (translations, "smaller", "<font size=-1>");
g_hash_table_insert (translations, "/smaller", "</font>");
g_hash_table_insert (translations, "bigger", "<font size=+1>");
g_hash_table_insert (translations, "/bigger", "</font>");
g_hash_table_insert (translations, "underline", "<u>");
g_hash_table_insert (translations, "/underline", "</u>");
g_hash_table_insert (translations, "center", "<p align=center>");
g_hash_table_insert (translations, "/center", "</p>");
g_hash_table_insert (translations, "flushleft", "<p align=left>");
g_hash_table_insert (translations, "/flushleft", "</p>");
g_hash_table_insert (translations, "flushright", "<p align=right>");
g_hash_table_insert (translations, "/flushright", "</p>");
g_hash_table_insert (translations, "excerpt", "<blockquote>");
g_hash_table_insert (translations, "/excerpt", "</blockquote>");
g_hash_table_insert (translations, "paragraph", "<p>");
g_hash_table_insert (translations, "signature", "<address>");
g_hash_table_insert (translations, "/signature", "</address>");
g_hash_table_insert (translations, "comment", "<!-- ");
g_hash_table_insert (translations, "/comment", " -->");
g_hash_table_insert (translations, "param", "<!-- ");
g_hash_table_insert (translations, "/param", " -->");
g_hash_table_insert (translations, "np", "<hr>");
}
text = get_data_wrapper_text (wrapper);
if (!text)
return FALSE;
if (!g_strcasecmp (mime_type, "text/richtext")) {
enriched = FALSE;
mail_html_write (md->html, md->stream,
"\n<!-- text/richtext -->\n");
} else {
enriched = TRUE;
mail_html_write (md->html, md->stream,
"\n<!-- text/enriched -->\n");
}
/* This is not great code, but I don't feel like fixing it right
* now. I mean, it's just text/enriched...
*/
p = text;
string = g_string_sized_new (2 * strlen (p));
while (p) {
len = strcspn (p, " <>&\n");
if (len)
g_string_sprintfa (string, "%.*s", len, p);
p += len;
if (!*p)
break;
switch (*p++) {
case ' ':
while (*p == ' ') {
g_string_append (string, " ");
p++;
}
g_string_append (string, " ");
break;
case '\n':
g_string_append (string, " ");
if (enriched && nofill <= 0) {
while (*p == '\n') {
g_string_append (string, "<br>");
p++;
}
}
break;
case '>':
g_string_append (string, ">");
break;
case '&':
g_string_append (string, "&");
break;
case '<':
if (enriched) {
if (*p == '<') {
g_string_append (string, "<");
p++;
break;
}
} else {
if (strncmp (p, "lt>", 3) == 0) {
g_string_append (string, "<");
p += 3;
break;
} else if (strncmp (p, "nl>", 3) == 0) {
g_string_append (string, "<br>");
p += 3;
break;
}
}
if (strncmp (p, "nofill>", 7) == 0) {
nofill++;
g_string_append (string, "<pre>");
} else if (strncmp (p, "/nofill>", 8) == 0) {
nofill--;
g_string_append (string, "</pre>");
} else {
char *copy, *match;
len = strcspn (p, ">");
copy = g_strndup (p, len);
match = g_hash_table_lookup (translations,
copy);
g_free (copy);
if (match)
g_string_append (string, match);
}
p = strchr (p, '>');
if (p)
p++;
}
}
g_free (text);
ba = g_byte_array_new ();
g_byte_array_append (ba, (const guint8 *)string->str,
strlen (string->str));
g_string_free (string, TRUE);
xed = g_strdup_printf ("x-evolution-data:%p", part);
mail_html_write (md->html, md->stream,
"<iframe src=\"%s\" frameborder=0 scrolling=no>"
"</iframe>", xed);
add_url ("data_urls", xed, ba, md);
return TRUE;
}
static gboolean
handle_text_html (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
const char *location;
mail_html_write (md->html, md->stream, "\n<!-- text/html -->\n");
/* FIXME: deal with relative URLs */
location = get_location (part, md);
if (!location)
location = get_cid (part, md);
mail_html_write (md->html, md->stream,
"<iframe src=\"%s\" frameborder=0 scrolling=no>"
"</iframe>", location);
return TRUE;
}
static gboolean
handle_image (CamelMimePart *part, const char *mime_type, MailDisplay *md)
{
mail_html_write (md->html, md->stream, "<img hspace=10 vspace=10 src=\"%s\">",
get_cid (part, md));
return TRUE;
}
static gboolean
handle_multipart_mixed (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *mp;
int i, nparts;
gboolean output = FALSE;
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts; i++) {
if (i != 0 && output)
mail_html_write (md->html, md->stream,
"<table cellspacing=0 cellpadding=10 width=\"100%%\"><tr><td width=\"100%%\">"
"<hr noshadow size=1></td></tr></table>\n");
part = camel_multipart_get_part (mp, i);
output = format_mime_part (part, md);
}
return TRUE;
}
static gboolean
handle_multipart_encrypted (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper;
CamelMimePart *mime_part;
CamelException ex;
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
/* Currently we only handle RFC2015-style PGP encryption. */
if (!camel_pgp_mime_is_rfc2015_encrypted (part))
return handle_multipart_mixed (part, mime_type, md);
camel_exception_init (&ex);
mime_part = mail_crypto_pgp_mime_part_decrypt (part, &ex);
if (camel_exception_is_set (&ex)) {
/* I guess we just treat this as a multipart/mixed */
camel_exception_clear (&ex);
return handle_multipart_mixed (part, mime_type, md);
} else {
/* replace the encrypted part with the decrypted part */
/* FIXME: will this cause problems anywhere? -- seems to work okay so far */
camel_medium_set_content_object (CAMEL_MEDIUM (part),
camel_medium_get_content_object (CAMEL_MEDIUM (mime_part)));
camel_object_unref (CAMEL_OBJECT (mime_part));
/* and continue on our merry way... */
return format_mime_part (part, md);
}
}
static gboolean
handle_multipart_signed (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper;
CamelMultipart *mp;
CamelException *ex;
gboolean output = FALSE;
CamelCipherValidity *valid;
int nparts, i;
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
ex = camel_exception_new ();
if (camel_pgp_mime_is_rfc2015_signed (part)) {
valid = mail_crypto_pgp_mime_part_verify (part, ex);
} else {
camel_exception_free (ex);
return handle_multipart_mixed (part, mime_type, md);
}
if (!valid) {
camel_exception_free (ex);
return handle_multipart_mixed (part, mime_type, md);
}
camel_exception_free (ex);
/* now display all the subparts (there should be only 1) *except* the signature (last part) */
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts - 1; i++) {
if (i != 0 && output)
mail_html_write (md->html, md->stream,
"<table cellspacing=0 cellpadding=10 width=\"100%%\"><tr><td width=\"100%%\">"
"<hr noshadow size=1></td></tr></table>\n");
part = camel_multipart_get_part (mp, i);
output = format_mime_part (part, md);
}
mail_write_authenticity (md, valid);
camel_cipher_validity_free (valid);
mail_html_write (md->html, md->stream, "</font></td></table>");
return TRUE;
}
/* As seen in RFC 2387! */
static gboolean
handle_multipart_related (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *mp;
CamelMimePart *body_part, *display_part = NULL;
CamelContentType *content_type;
const char *start;
int i, nparts;
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
content_type = camel_mime_part_get_content_type (part);
start = header_content_type_param (content_type, "start");
if (start) {
int len;
/* The "start" parameter includes <>s, which Content-Id
* does not.
*/
len = strlen (start) - 2;
for (i = 0; i < nparts; i++) {
const char *cid;
body_part = camel_multipart_get_part (mp, i);
cid = camel_mime_part_get_content_id (body_part);
if (!strncmp (cid, start + 1, len) &&
strlen (cid) == len) {
display_part = body_part;
break;
}
}
} else {
/* No start parameter, so it defaults to the first part. */
display_part = camel_multipart_get_part (mp, 0);
}
if (!display_part) {
/* Oops. Hrmph. */
return handle_multipart_mixed (part, mime_type, md);
}
/* Record the Content-ID/Content-Location of any non-displayed parts. */
for (i = 0; i < nparts; i++) {
body_part = camel_multipart_get_part (mp, i);
if (body_part == display_part)
continue;
get_cid (body_part, md);
get_location (body_part, md);
}
/* Now, display the displayed part. */
return format_mime_part (display_part, md);
}
/* RFC 2046 says "display the last part that you are able to display". */
static CamelMimePart *
find_preferred_alternative (CamelMultipart *multipart, gboolean want_plain)
{
int i, nparts;
CamelMimePart *preferred_part = NULL;
MailMimeHandler *handler;
nparts = camel_multipart_get_number (multipart);
for (i = 0; i < nparts; i++) {
CamelMimePart *part = camel_multipart_get_part (multipart, i);
CamelContentType *type = camel_mime_part_get_content_type (part);
char *mime_type = header_content_type_simple (type);
g_strdown (mime_type);
if (want_plain && !strcmp (mime_type, "text/plain"))
return part;
handler = mail_lookup_handler (mime_type);
if (handler && (!preferred_part || !handler->generic))
preferred_part = part;
g_free (mime_type);
}
return preferred_part;
}
static gboolean
handle_multipart_alternative (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *multipart;
CamelMimePart *mime_part;
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
multipart = CAMEL_MULTIPART (wrapper);
mime_part = find_preferred_alternative (multipart, FALSE);
if (mime_part)
return format_mime_part (mime_part, md);
else
return handle_multipart_mixed (part, mime_type, md);
}
/* RFC 1740 */
static gboolean
handle_multipart_appledouble (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
CamelMultipart *multipart;
g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE);
multipart = CAMEL_MULTIPART (wrapper);
/* The first part is application/applefile and is not useful
* to us. The second part _may_ be displayable data. Most
* likely it's application/octet-stream though.
*/
part = camel_multipart_get_part (multipart, 1);
return format_mime_part (part, md);
}
static gboolean
handle_message_rfc822 (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelDataWrapper *wrapper =
camel_medium_get_content_object (CAMEL_MEDIUM (part));
g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (wrapper), FALSE);
mail_html_write (md->html, md->stream, "<blockquote>");
mail_format_mime_message (CAMEL_MIME_MESSAGE (wrapper), md);
mail_html_write (md->html, md->stream, "</blockquote>");
return TRUE;
}
static gboolean
handle_message_external_body (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
CamelContentType *type;
const char *access_type;
char *url = NULL, *desc = NULL;
char *fmt;
type = camel_mime_part_get_content_type (part);
access_type = header_content_type_param (type, "access-type");
if (!access_type)
goto fallback;
if (!g_strcasecmp (access_type, "ftp") ||
!g_strcasecmp (access_type, "anon-ftp")) {
const char *name, *site, *dir, *mode, *ftype;
char *path;
name = header_content_type_param (type, "name");
site = header_content_type_param (type, "site");
if (name == NULL || site == NULL)
goto fallback;
dir = header_content_type_param (type, "directory");
mode = header_content_type_param (type, "mode");
/* Generate the path. */
if (dir) {
const char *p = dir + strlen (dir);
path = g_strdup_printf ("%s%s%s%s",
*dir == '/' ? "" : "/",
dir,
*p == '/' ? "" : "/",
name);
} else {
path = g_strdup_printf ("%s%s",
*name == '/' ? "" : "/",
name);
}
if (mode && *mode == 'A')
ftype = ";type=A";
else if (mode && *mode == 'I')
ftype = ";type=I";
else
ftype = "";
url = g_strdup_printf ("ftp://%s%s%s", site, path, ftype);
g_free (path);
fmt = e_utf8_from_locale_string (_("Pointer to FTP site (%s)"));
desc = g_strdup_printf (fmt, url);
g_free (fmt);
} else if (!g_strcasecmp (access_type, "local-file")) {
const char *name, *site;
name = header_content_type_param (type, "name");
if (name == NULL)
goto fallback;
site = header_content_type_param (type, "site");
url = g_strdup_printf ("file://%s%s", *name == '/' ? "" : "/",
name);
if (site) {
fmt = e_utf8_from_locale_string (_("Pointer to local file (%s) "
"valid at site \"%s\""));
desc = g_strdup_printf (fmt, name, site);
g_free (fmt);
} else {
fmt = e_utf8_from_locale_string (_("Pointer to local file (%s)"));
desc = g_strdup_printf (fmt, name);
g_free (fmt);
}
} else if (!g_strcasecmp (access_type, "URL")) {
const char *urlparam;
char *s, *d;
/* RFC 2017 */
urlparam = header_content_type_param (type, "url");
if (urlparam == NULL)
goto fallback;
/* For obscure MIMEy reasons, the URL may be split into
* multiple words, and needs to be rejoined. (The URL
* must have any real whitespace %-encoded, so we just
* get rid of all of it.
*/
url = g_strdup (urlparam);
s = d = url;
while (*s) {
if (!isspace ((unsigned char)*s))
*d++ = *s;
s++;
}
*d = *s;
fmt = e_utf8_from_locale_string (_("Pointer to remote data (%s)"));
desc = g_strdup_printf (fmt, url);
g_free (fmt);
}
fallback:
if (!desc) {
if (access_type) {
fmt = e_utf8_from_locale_string (_("Pointer to unknown external data "
"(\"%s\" type)"));
desc = g_strdup_printf (fmt, access_type);
g_free (fmt);
} else
desc = e_utf8_from_locale_string (_("Malformed external-body part."));
}
#if 0 /* FIXME */
handle_mystery (part, md, url, "gnome-globe.png", desc,
url ? "open it in a browser" : NULL);
#endif
g_free (desc);
g_free (url);
return TRUE;
}
static gboolean
handle_via_bonobo (CamelMimePart *part, const char *mime_type,
MailDisplay *md)
{
mail_html_write (md->html, md->stream,
"<object classid=\"%s\" type=\"%s\"></object>",
get_cid (part, md), mime_type);
return TRUE;
}
/**
* mail_get_message_rfc822:
* @message: the message
* @want_plain: whether the caller prefers plain to html
* @cite: whether or not to cite the message text
*
* See mail_get_message_body() below for more details.
*
* Return value: an HTML string representing the text parts of @message.
**/
static char *
mail_get_message_rfc822 (CamelMimeMessage *message, gboolean want_plain, gboolean cite)
{
CamelDataWrapper *contents;
GString *retval;
const CamelInternetAddress *cia;
char *text, *citation, *buf, *html;
time_t date_val;
int offset;
contents = camel_medium_get_content_object (CAMEL_MEDIUM (message));
text = mail_get_message_body (contents, want_plain, cite);
if (!text)
text = g_strdup ("");
citation = cite ? "> " : "";
retval = g_string_new (NULL);
/* Kludge: if text starts with "<PRE>", wrap it around the
* headers too so we won't get a blank line between them for the
* <P> to <PRE> switch.
*/
if (!g_strncasecmp (text, "<pre>", 5))
g_string_sprintfa (retval, "<PRE>");
/* create credits */
cia = camel_mime_message_get_from (message);
buf = camel_address_format (CAMEL_ADDRESS (cia));
if (buf) {
html = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
g_string_sprintfa (retval, "%s<b>From:</b> %s<br>",
citation, html);
g_free (html);
g_free (buf);
}
cia = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_TO);
buf = camel_address_format (CAMEL_ADDRESS (cia));
if (buf) {
html = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
g_string_sprintfa (retval, "%s<b>To:</b> %s<br>",
citation, html);
g_free (html);
g_free (buf);
}
cia = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_CC);
buf = camel_address_format (CAMEL_ADDRESS (cia));
if (buf) {
html = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
g_string_sprintfa (retval, "%s<b>Cc:</b> %s<br>",
citation, html);
g_free (html);
g_free (buf);
}
buf = (char *) camel_mime_message_get_subject (message);
if (buf) {
html = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
g_string_sprintfa (retval, "%s<b>Subject:</b> %s<br>",
citation, html);
g_free (html);
}
date_val = camel_mime_message_get_date (message, &offset);
buf = header_format_date (date_val, offset);
html = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
g_string_sprintfa (retval, "%s<b>Date:</b> %s<br>", citation, html);
g_free (html);
if (!g_strncasecmp (text, "<pre>", 5))
g_string_sprintfa (retval, "%s<br>%s", citation, text + 5);
else
g_string_sprintfa (retval, "%s<br>%s", citation, text);
g_free (text);
buf = retval->str;
g_string_free (retval, FALSE);
return buf;
}
/**
* mail_get_message_body:
* @data: the message or mime part content
* @want_plain: whether the caller prefers plain to html
* @cite: whether or not to cite the message text
*
* This creates an HTML string representing @data. If @want_plain is %TRUE,
* it will be an HTML string that looks like a text/plain representation
* of @data (but it will still be HTML).
*
* If @cite is %TRUE, the message will be cited as a reply, using "> "s.
*
* Return value: the HTML string, which the caller must free, or
* %NULL if @data doesn't include any data which should be forwarded or
* replied to.
**/
char *
mail_get_message_body (CamelDataWrapper *data, gboolean want_plain, gboolean cite)
{
CamelMultipart *mp;
CamelMimePart *subpart;
int i, nparts;
char *subtext, *old, *div;
char *text = NULL;
CamelContentType *mime_type;
mime_type = camel_data_wrapper_get_mime_type_field (data);
/* If it is message/rfc822 or message/news, extract the
* important headers and recursively process the body.
*/
if (header_content_type_is (mime_type, "message", "rfc822") ||
header_content_type_is (mime_type, "message", "news"))
return mail_get_message_rfc822 (CAMEL_MIME_MESSAGE (data), want_plain, cite);
/* If it's a vcard or icalendar, ignore it. */
if (header_content_type_is (mime_type, "text", "x-vcard") ||
header_content_type_is (mime_type, "text", "calendar"))
return NULL;
/* Get the body data for other text/ or message/ types */
if (header_content_type_is (mime_type, "text", "*") ||
header_content_type_is (mime_type, "message", "*")) {
text = get_data_wrapper_text (data);
if (text && !header_content_type_is (mime_type, "text", "html")) {
char *html = e_text_to_html (text, E_TEXT_TO_HTML_PRE | (cite ? E_TEXT_TO_HTML_CITE : 0));
g_free (text);
text = html;
}
return text;
}
/* If it's not message and it's not text, and it's not
* multipart, we don't want to deal with it.
*/
if (!header_content_type_is (mime_type, "multipart", "*"))
return NULL;
mp = CAMEL_MULTIPART (data);
if (header_content_type_is (mime_type, "multipart", "alternative")) {
/* Pick our favorite alternative and reply to it. */
subpart = find_preferred_alternative (mp, want_plain);
if (!subpart)
return NULL;
data = camel_medium_get_content_object (CAMEL_MEDIUM (subpart));
return mail_get_message_body (data, want_plain, cite);
}
/* Otherwise, concatenate all the parts that we can. */
if (want_plain) {
if (cite)
div = "<br>\n> ----<br>\n> <br>\n";
else
div = "<br>\n----<br>\n<br>\n";
} else
div = "<br><hr><br>";
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts; i++) {
subpart = camel_multipart_get_part (mp, i);
data = camel_medium_get_content_object (CAMEL_MEDIUM (subpart));
subtext = mail_get_message_body (data, want_plain, cite);
if (!subtext)
continue;
if (text) {
old = text;
text = g_strdup_printf ("%s%s%s", old, div, subtext);
g_free (subtext);
g_free (old);
} else
text = subtext;
}
return text;
}