/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Authors: * Dan Winship * * Copyright 2000, 2001 Ximian, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * 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. * */ #ifdef HAVE_CONFIG_H #include #endif #include /* for isprint */ #include /* for strstr */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mail.h" #include "mail-tools.h" #include "mail-display.h" #include "mail-mt.h" #include "mail-crypto.h" static char *try_inline_pgp (char *start, CamelMimePart *part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static char *try_inline_pgp_sig (char *start, CamelMimePart *part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static char *try_uudecoding (char *start, CamelMimePart *part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static char *try_inline_binhex (char *start, CamelMimePart *part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_text_plain (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_text_plain_flowed (char *text, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_text_enriched (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_text_html (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_image (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_mixed (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_related (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_alternative (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_appledouble (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_encrypted (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_signed (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_multipart_digest (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_message_rfc822 (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_message_external_body (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); static gboolean handle_via_bonobo (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); /* writes the header info for a mime message into an html stream */ static void write_headers (CamelMimeMessage *message, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); /* dispatch html printing via mimetype */ static gboolean format_mime_part (CamelMimePart *part, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); 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); } /** * 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, GtkHTML *html, GtkHTMLStream *stream) { GHashTable *hash; g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message)); hash = g_datalist_get_data (md->data, "part_urls"); if (!hash) { hash = g_hash_table_new (g_str_hash, g_str_equal); g_datalist_set_data_full (md->data, "part_urls", hash, free_part_urls); } hash = g_datalist_get_data (md->data, "data_urls"); if (!hash) { hash = g_hash_table_new (g_str_hash, g_str_equal); g_datalist_set_data_full (md->data, "data_urls", hash, free_data_urls); } hash = g_datalist_get_data (md->data, "attachment_states"); if (!hash) { hash = g_hash_table_new (NULL, NULL); g_datalist_set_data_full (md->data, "attachment_states", hash, (GDestroyNotify) g_hash_table_destroy); } hash = g_datalist_get_data (md->data, "fake_parts"); if (!hash) { hash = g_hash_table_new (NULL, NULL); g_datalist_set_data_full (md->data, "fake_parts", hash, (GDestroyNotify) g_hash_table_destroy); } write_headers (mime_message, md, html, stream); format_mime_part (CAMEL_MIME_PART (mime_message), md, html, stream); } /** * 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, GtkHTML *html, GtkHTMLStream *stream) { GByteArray *bytes; char *html_str; g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message)); if (!mail_content_loaded (CAMEL_DATA_WRAPPER (mime_message), md, TRUE, NULL, html, NULL)) return; mail_html_write (html, stream, "
\n"); bytes = mail_format_get_data_wrapper_text (CAMEL_DATA_WRAPPER (mime_message), md); if (bytes) { g_byte_array_append (bytes, "", 1); html_str = e_text_to_html (bytes->data, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_SPACES | E_TEXT_TO_HTML_ESCAPE_8BIT); g_byte_array_free (bytes, TRUE); mail_html_write (html, stream, html_str); g_free (html_str); } mail_html_write (html, stream, "
"); } static const char * get_cid (CamelMimePart *part, MailDisplay *md) { static int fake_cid_counter = 0; char *cid; /* 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 mail_display_add_url (md, "part_urls", cid, part); } static const char * get_location (CamelMimePart *part, MailDisplay *md) { CamelURL *base; const char *loc; char *location; base = mail_display_get_content_location (md); loc = camel_mime_part_get_content_location (part); if (!loc) { if (!base) return NULL; location = camel_url_to_string (base, 0); return mail_display_add_url (md, "part_urls", location, part); } /* kludge: If the multipart/related does not have a Content-Location header and the HTML part doesn't contain a Content-Location header either, then we will end up generating a invalid unique identifier in the form of "cid:@@@%d" for use in GtkHTML's iframe src url. This means that when GtkHTML requests a relative URL, it will request "cid:/%s" */ mail_display_add_url (md, "part_urls", g_strdup_printf ("cid:/%s", loc), part); if (!strchr (loc, ':') && base) { CamelURL *url; mail_display_add_url (md, "part_urls", g_strdup (loc), part); url = camel_url_new_with_base (base, loc); location = camel_url_to_string (url, 0); camel_url_free (url); } else { location = g_strdup (loc); } return mail_display_add_url (md, "part_urls", location, part); } 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); g_hash_table_insert (mime_function_table, "multipart/digest", handle_multipart_digest); /* 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; const char *p; 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. */ p = strchr (mime_type, '/'); if (p == NULL) p = mime_type + strlen (mime_type); mime_type_main = alloca ((p - mime_type) + 3); memcpy (mime_type_main, mime_type, p - mime_type); memcpy (mime_type_main + (p - mime_type), "/*", 3); handler->builtin = g_hash_table_lookup (mime_function_table, 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; /* 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 mail_part_set_default_displayed_inline (CamelMimePart *part, MailDisplay *md, gboolean displayed) { GHashTable *asht = g_datalist_get_data (md->data, "attachment_states"); gint state; if (g_hash_table_lookup (asht, part)) return; state = I_VALID | (displayed ? I_DISPLAYED : 0); g_hash_table_insert (asht, part, GINT_TO_POINTER (state)); } static void attachment_header (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { char *htmlinfo, *html_str, *fmt; const char *info; /* Start the table, create the pop-up object. */ mail_html_write (html, stream, "" ""); if (! md->printing) { gtk_html_stream_printf (stream, "", get_cid (part, md), mime_type); } mail_html_write (html, stream, "" "" "
"); /* Write the MIME type */ info = gnome_vfs_mime_get_value (mime_type, "description"); html_str = e_text_to_html (info ? info : mime_type, 0); htmlinfo = e_utf8_from_locale_string (html_str); g_free (html_str); fmt = e_utf8_from_locale_string (_("%s attachment")); gtk_html_stream_printf (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); gtk_html_stream_printf (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, md->printing ? 0 : E_TEXT_TO_HTML_CONVERT_URLS); gtk_html_stream_printf (stream, ", \"%s\"", htmlinfo); g_free (htmlinfo); } mail_html_write (html, stream, "
" "
\n"); } static gboolean format_mime_part (CamelMimePart *part, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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_printf (html, stream, "\n%s\n", mesg); g_free (mesg); if (mail_content_loaded (wrapper, md, TRUE, NULL, html, NULL)) handle_text_plain (part, "text/plain", md, html, stream); 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, html, stream); if (handler && handler->builtin && inline_flags & I_DISPLAYED && mail_content_loaded (wrapper, md, TRUE, NULL, html, NULL)) output = (*handler->builtin) (part, mime_type, md, html, stream); 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) { gtk_html_stream_printf (stream, "%s%s:%s ", bold ? "" : "", encoded_name, bold ? "" : ""); } else { gtk_html_stream_printf (stream, "<%s align=\"right\" valign=\"top\">%s:" " ", 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); gtk_html_stream_printf (stream, "%s ", 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); gtk_html_stream_printf (stream, "%s ", encoded); if (value && *value) g_free (encoded); } static void write_address (MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream, 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, html, 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_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_disp = e_text_to_html (email, 0); } if (i) mail_html_write (html, stream, ", "); if (have_email || have_name) { if (!have_email) { email_disp = g_strdup ("???"); } if (have_name) { if (md->printing) { gtk_html_stream_printf (stream, "%s <%s>", name_disp, email_disp); } else { gtk_html_stream_printf (stream, "%s <%s>", name_disp, addr_url, email_disp); } } else { if (md->printing) { mail_html_write (html, stream, email_disp); } else { gtk_html_stream_printf (stream, "%s", addr_url, email_disp); } } } else { char *str; str = e_utf8_from_locale_string (_("Bad Address")); gtk_html_stream_printf (stream, "%s", str); g_free (str); } g_free (name_disp); g_free (email_disp); g_free (addr_txt); g_free (addr_url); i++; } mail_html_write (html, stream, ""); } /* 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 (128 * 3)) static void write_headers (CamelMimeMessage *message, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { MailConfigXMailerDisplayStyle xm = mail_config_get_x_mailer_display_style (); gboolean full = (md->display_style == MAIL_CONFIG_DISPLAY_FULL_HEADERS); char bgcolor[7], fontcolor[7]; GtkStyle *style = NULL; gboolean evo_icon = FALSE; int i; /* My favorite thing to do... muck around with colors so we respect people's stupid themes. However, we only do this if we are rendering to the screen -- we ignore the theme when we are printing. */ style = gtk_widget_get_style (GTK_WIDGET (html)); if (style && !md->printing) { int state = GTK_WIDGET_STATE (GTK_WIDGET (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 / 256; 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"); } gtk_html_stream_printf ( stream, "" /* Top margin */ "" /* Left margin */ "" /* Black border */ "" /* Right margin */ "" "
" /* Main header box */ "
" /* Internal header table */ ""); if (!md->printing && evo_icon) { gtk_html_stream_printf (stream, "", mail_display_get_url_for_icon (md, EVOLUTION_ICONSDIR "/monkey-16.png")); } mail_html_write (html, stream, /* Main header box */ "
\n", bgcolor, fontcolor); 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 = e_iconv_charset_name(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, html, stream); g_free(value); } else write_default_header(message, md, html, stream, i, WRITE_NOCOLUMNS); header = header->next; } } else { for (i=0;i
" "" "
" /* Black border */ "
\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, GtkHTML *html, 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, html, wrapper); else mail_display_stream_write_when_loaded (md, wrapper, url, load_offline_content, html, handle, wrapper); return FALSE; } /* Return the contents of a data wrapper, or %NULL if it contains only * whitespace. */ GByteArray * mail_format_get_data_wrapper_text (CamelDataWrapper *wrapper, MailDisplay *mail_display) { 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 || (mail_display && mail_display->charset)) { CamelMimeFilterCharset *filter; const char *charset; if (!wrapper->rawtext) { /* data wrapper had been successfully converted to UTF-8 using the mime part's charset, but the user thinks he knows best so we'll let him shoot himself in the foot here... */ CamelContentType *content_type; /* get the original charset of the mime part */ content_type = camel_data_wrapper_get_mime_type_field (wrapper); charset = content_type ? header_content_type_param (content_type, "charset") : NULL; if (!charset) charset = mail_config_get_default_charset (); /* since the content is already in UTF-8, we need to decode into the original charset before we can convert back to UTF-8 using the charset the user is overriding with... */ filter = camel_mime_filter_charset_new_convert ("utf-8", charset); if (filter) { camel_stream_filter_add (filtered_stream, CAMEL_MIME_FILTER (filter)); camel_object_unref (CAMEL_OBJECT (filter)); } } /* find out the charset the user wants to override to */ if (mail_display && mail_display->charset) charset = mail_display->charset; else 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; } return ba; } static void write_hr (GtkHTML *html, GtkHTMLStream *stream) { mail_html_write (html, stream, "
" "
\n"); } /*----------------------------------------------------------------------* * Mime handling functions *----------------------------------------------------------------------*/ struct { char *start; char * (*handler) (char *start, CamelMimePart *part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream); } 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 } }; static int num_specials = (sizeof (text_specials) / sizeof (text_specials[0])); static void write_one_text_plain_chunk (const char *text, int len, GtkHTML *html, GtkHTMLStream *stream, gboolean printing) { char *buf; mail_html_write (html, stream, "
\n"); buf = g_strndup (text, len); mail_text_write (html, stream, printing, buf); g_free (buf); mail_html_write (html, stream, "
\n"); } static gboolean handle_text_plain (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelContentType *type; gboolean check_specials; char *p, *start, *text; const char *format; GByteArray *bytes; int i; bytes = mail_format_get_data_wrapper_text (wrapper, md); if (!bytes) return FALSE; g_byte_array_append (bytes, "", 1); text = bytes->data; g_byte_array_free (bytes, FALSE); /* Check to see if this is a broken text/html part with content-type text/plain */ start = text; while (isspace ((unsigned) *start)) start++; if (!g_strncasecmp (start, "", 6) || !g_strncasecmp (start, "printing); p = text_specials[i].handler (start, part, start - text, md, html, stream); if (p == start) { /* Oops. That failed. Output this line normally and * skip over it. */ p = strchr (start, '\n'); /* Last line, drop out, and dump */ if (p == NULL) { p = start; break; } p++; write_one_text_plain_chunk (start, p - start, html, stream, md->printing); } else if (p) write_hr (html, stream); } /* Finish up (or do the whole thing if there were no specials). */ if (p) write_one_text_plain_chunk (p, strlen (p), html, stream, md->printing); g_free (text); return TRUE; } static gboolean handle_text_plain_flowed (char *buf, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { char *text, *line, *eol, *p; int prevquoting = 0, quoting, len, br_pending = 0; guint32 citation_color = mail_config_get_citation_color (); mail_html_write (html, stream, "\n\n" "
\n\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) { if (md->printing) mail_html_write (html, stream, ""); else gtk_html_stream_printf (stream, "", citation_color); if (br_pending) br_pending--; } while (quoting > prevquoting) { mail_html_write (html, stream, "
"); prevquoting++; } while (quoting < prevquoting) { mail_html_write (html, stream, "
"); prevquoting--; } if (quoting == 0) { mail_html_write (html, stream, md->printing ? "" : "\n"); if (br_pending) br_pending--; } } if (*p == ' ') p++; len = strlen (p); if (len == 0) { br_pending++; continue; } while (br_pending) { mail_html_write (html, stream, "
\n"); br_pending--; } /* replace '<' with '<', etc. */ text = e_text_to_html (p, md->printing ? E_TEXT_TO_HTML_CONVERT_SPACES : E_TEXT_TO_HTML_CONVERT_SPACES | E_TEXT_TO_HTML_CONVERT_URLS); if (text && *text) mail_html_write (html, stream, text); g_free (text); if ((len > 0 && p[len - 1]) != ' ' || !strcmp (p, "-- ")) br_pending++; if (!eol) break; } g_free (buf); mail_html_write (html, stream, "\n
\n"); return TRUE; } static CamelMimePart * fake_mime_part_from_data (const char *data, int len, const char *type, guint offset, MailDisplay *md) { GHashTable *fake_parts = g_datalist_get_data (md->data, "fake_parts"); CamelStream *memstream; CamelDataWrapper *wrapper; CamelMimePart *part; part = g_hash_table_lookup (fake_parts, GUINT_TO_POINTER (offset)); if (part) return 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"); g_hash_table_insert (fake_parts, GUINT_TO_POINTER (offset), part); return part; } static void destroy_part (CamelObject *root, gpointer event_data, gpointer user_data) { camel_object_unref (user_data); } static char * try_inline_pgp (char *start, CamelMimePart *mime_part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { return start; } static char * try_inline_pgp_sig (char *start, CamelMimePart *mime_part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { return start; } static char * try_uudecoding (char *start, CamelMimePart *mime_part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { int mode, len, state = CAMEL_UUDECODE_STATE_INIT; char *filename, *estart, *p, *out; 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); part = fake_mime_part_from_data (out, len, "application/octet-stream", offset, md); 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); write_hr (html, stream); format_mime_part (part, md, html, stream); return p + 4; } static char * try_inline_binhex (char *start, CamelMimePart *mime_part, guint offset, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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", offset, md); camel_object_hook_event (CAMEL_OBJECT (md->current_message), "finalize", destroy_part, part); write_hr (html, stream); format_mime_part (part, md, html, stream); return p; } static void g_string_append_len (GString *string, const char *str, int len) { char *tmp; tmp = g_malloc (len + 1); tmp[len] = 0; memcpy (tmp, str, len); g_string_append (string, tmp); g_free (tmp); } /* text/enriched (RFC 1896) or text/richtext (included in RFC 1341) */ static gboolean handle_text_enriched (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { static GHashTable *translations = NULL; CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); GByteArray *ba, *bytes; char *text, *p, *xed; int len, nofill = 0; gboolean enriched; GString *string; if (!translations) { translations = g_hash_table_new (g_strcase_hash, g_strcase_equal); g_hash_table_insert (translations, "bold", ""); g_hash_table_insert (translations, "/bold", ""); g_hash_table_insert (translations, "italic", ""); g_hash_table_insert (translations, "/italic", ""); g_hash_table_insert (translations, "fixed", ""); g_hash_table_insert (translations, "/fixed", ""); g_hash_table_insert (translations, "smaller", ""); g_hash_table_insert (translations, "/smaller", ""); g_hash_table_insert (translations, "bigger", ""); g_hash_table_insert (translations, "/bigger", ""); g_hash_table_insert (translations, "underline", ""); g_hash_table_insert (translations, "/underline", ""); g_hash_table_insert (translations, "center", "

"); g_hash_table_insert (translations, "/center", "

"); g_hash_table_insert (translations, "flushleft", "

"); g_hash_table_insert (translations, "/flushleft", "

"); g_hash_table_insert (translations, "flushright", "

"); g_hash_table_insert (translations, "/flushright", "

"); g_hash_table_insert (translations, "excerpt", "
"); g_hash_table_insert (translations, "/excerpt", "
"); g_hash_table_insert (translations, "paragraph", "

"); g_hash_table_insert (translations, "signature", "

"); g_hash_table_insert (translations, "/signature", "
"); g_hash_table_insert (translations, "comment", ""); g_hash_table_insert (translations, "param", ""); g_hash_table_insert (translations, "np", "
"); } bytes = mail_format_get_data_wrapper_text (wrapper, md); if (!bytes) return FALSE; if (!g_strcasecmp (mime_type, "text/richtext")) { enriched = FALSE; mail_html_write (html, stream, "\n\n"); } else { enriched = TRUE; mail_html_write (html, stream, "\n\n"); } /* This is not great code, but I don't feel like fixing it right * now. I mean, it's just text/enriched... */ string = g_string_sized_new (2 * bytes->len); g_byte_array_append (bytes, "", 1); p = text = bytes->data; g_byte_array_free (bytes, FALSE); while (p) { len = strcspn (p, " <>&\n"); if (len) g_string_append_len (string, p, len); 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, "
"); 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, "
"); p += 3; break; } } if (strncmp (p, "nofill>", 7) == 0) { nofill++; g_string_append (string, "
");
			} else if (strncmp (p, "/nofill>", 8) == 0) {
				nofill--;
				g_string_append (string, "
"); } 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, string->len); g_string_free (string, TRUE); xed = g_strdup_printf ("x-evolution-data:%p", part); gtk_html_stream_printf (stream, "", xed); mail_display_add_url (md, "data_urls", xed, ba); return TRUE; } static gboolean handle_text_html (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { const char *location, *base; mail_html_write (html, stream, "\n\n"); if ((base = camel_medium_get_header (CAMEL_MEDIUM (part), "Content-Base"))) { char *base_url; size_t len; len = strlen (base); if (*base == '"' && *(base + len - 1) == '"') { len -= 2; base_url = alloca (len + 1); memcpy (base_url, base + 1, len); base_url[len] = '\0'; base = base_url; } gtk_html_set_base (html, base); } location = get_location (part, md); if (!location) location = get_cid (part, md); gtk_html_stream_printf (stream, "", location); return TRUE; } static gboolean handle_image (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { gtk_html_stream_printf (stream, "", get_cid (part, md)); return TRUE; } static gboolean handle_multipart_mixed (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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) write_hr (html, stream); part = camel_multipart_get_part (mp, i); output = format_mime_part (part, md, html, stream); } return TRUE; } static gboolean handle_multipart_digest (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE); gtk_html_stream_printf (stream, "    %s", mail_display_get_url_for_icon (md, EVOLUTION_ICONSDIR "/envelope.png"), U_("View messages...")); return TRUE; } static gboolean handle_multipart_encrypted (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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, html, stream); camel_exception_init (&ex); mime_part = mail_crypto_pgp_mime_part_decrypt (part, &ex); if (camel_exception_is_set (&ex)) { char *error; error = e_utf8_from_locale_string (camel_exception_get_description (&ex)); mail_error_printf (html, stream, "\n%s\n", error); g_free (error); camel_exception_clear (&ex); return TRUE; } else { /* replace the encrypted part with the decrypted part */ 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, html, stream); } } static gboolean handle_multipart_signed (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { CamelMimePart *subpart; CamelDataWrapper *wrapper; CamelMultipartSigned *mps; gboolean output = FALSE; wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); g_return_val_if_fail (CAMEL_IS_MULTIPART_SIGNED (wrapper), FALSE); mps = CAMEL_MULTIPART_SIGNED(wrapper); /* if subpart & signature is null, what do we do? just write it out raw? multipart_signed will, if it cannot parse properly, put everything in the first part this includes: more or less than 2 parts */ /* output the content */ subpart = camel_multipart_get_part((CamelMultipart *)mps, CAMEL_MULTIPART_SIGNED_CONTENT); if (subpart == NULL) return FALSE; output = format_mime_part (subpart, md, html, stream); /* now handle the signature */ subpart = camel_multipart_get_part((CamelMultipart *)mps, CAMEL_MULTIPART_SIGNED_SIGNATURE); if (subpart == NULL) return FALSE; mail_part_set_default_displayed_inline(subpart, md, FALSE); if (!mail_part_is_displayed_inline (subpart, md) && !md->printing) { char *url; /* Write out the click-for-info object */ url = g_strdup_printf ("signature:%p/%lu", subpart, (unsigned long)time (NULL)); gtk_html_stream_printf (stream, "
" "" "" "" "
" "
" "
", url); mail_display_add_url (md, "part_urls", url, subpart); mail_html_write (html, stream, U_("This message is digitally signed. " "Click the lock icon for more information.")); mail_html_write (html, stream, "
" "
\n"); } else { CamelCipherValidity *valid = NULL; CamelException ex; const char *message = NULL; gboolean good = FALSE; CamelPgpContext *context; /* Write out the verification results */ /* TODO: use the right context for the right message ... */ camel_exception_init (&ex); context = camel_pgp_context_new(session, mail_config_get_pgp_type(), mail_config_get_pgp_path()); if (context) { valid = camel_multipart_signed_verify(mps, (CamelCipherContext *)context, &ex); if (valid) { good = camel_cipher_validity_get_valid(valid); message = camel_cipher_validity_get_description(valid); } else { message = camel_exception_get_description(&ex); } } else { message = U_("Could not create a PGP verfication context"); } if (good) { gtk_html_stream_printf (stream, "" "" "
%s

", mail_display_get_url_for_icon (md, EVOLUTION_ICONSDIR "/pgp-signature-ok.png"), U_("This message is digitally signed and " "has been found to be authentic.")); } else { gtk_html_stream_printf (stream, "" "" "
%s

", mail_display_get_url_for_icon (md, EVOLUTION_ICONSDIR "/pgp-signature-bad.png"), U_("This message is digitally signed but can " "not be proven to be authentic.")); } if (message) { gtk_html_stream_printf (stream, "", good || md->printing ? "" : "color=red"); mail_text_write (html, stream, md->printing, message); mail_html_write (html, stream, ""); } mail_html_write (html, stream, "
"); camel_exception_clear (&ex); camel_cipher_validity_free (valid); } return TRUE; } /* As seen in RFC 2387! */ static gboolean handle_multipart_related (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *mp; CamelMimePart *body_part, *display_part = NULL; CamelContentType *content_type; const char *location, *start; int i, nparts; GHashTable *related_save; int ret; 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, html, stream); } /* setup a 'stack' of related parts */ related_save = md->related; md->related = g_hash_table_new(NULL, NULL); location = camel_mime_part_get_content_location (part); if (location) mail_display_push_content_location (md, location); /* 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); g_hash_table_insert(md->related, body_part, body_part); } /* Now, display the displayed part. */ ret = format_mime_part (display_part, md, html, stream); /* FIXME: flush html stream via gtkhtml_stream_flush which doens't exist yet ... */ while (gtk_events_pending ()) gtk_main_iteration (); /* Now check for related parts which didn't display, display them as attachments */ for (i = 0; i < nparts; i++) { body_part = camel_multipart_get_part (mp, i); if (body_part == display_part) continue; if (g_hash_table_lookup(md->related, body_part)) { if (ret) write_hr (html, stream); ret |= format_mime_part (body_part, md, html, stream); } } g_hash_table_destroy (md->related); md->related = related_save; if (location) mail_display_pop_content_location (md); return ret; } /* 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, GtkHTML *html, GtkHTMLStream *stream) { 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, html, stream); else return handle_multipart_mixed (part, mime_type, md, html, stream); } /* RFC 1740 */ static gboolean handle_multipart_appledouble (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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, html, stream); } static gboolean handle_message_rfc822 (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (wrapper), FALSE); mail_html_write (html, stream, "
"); mail_format_mime_message (CAMEL_MIME_MESSAGE (wrapper), md, html, stream); mail_html_write (html, stream, "
"); return TRUE; } static gboolean handle_message_external_body (CamelMimePart *part, const char *mime_type, MailDisplay *md, GtkHTML *html, GtkHTMLStream *stream) { 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, GtkHTML *html, GtkHTMLStream *stream) { if (! md->printing) { gtk_html_stream_printf (stream, "", 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 "
", wrap it around the
	 * headers too so we won't get a blank line between them for the
	 * 
 to 
 switch.
	 */
	if (!g_strncasecmp (text, "
", 5))
		g_string_sprintfa (retval, "
");

	/* 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);
		g_string_sprintfa (retval, "%sFrom: %s
",
				   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);
		g_string_sprintfa (retval, "%sTo: %s
",
				   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);
		g_string_sprintfa (retval, "%sCc: %s
",
				   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, "%sSubject: %s
",
				   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);
	g_string_sprintfa (retval, "%sDate: %s
", citation, html);
	g_free (html);
	g_free (buf);
	
	if (!g_strncasecmp (text, "
", 5))
		g_string_sprintfa (retval, "%s
%s", citation, text + 5);
	else
		g_string_sprintfa (retval, "%s
%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)
{
	char *subtext, *old, *div, *text = NULL;
	CamelContentType *mime_type;
	GByteArray *bytes = NULL;
	CamelMimePart *subpart;
	CamelMultipart *mp;
	int i, nparts;
	
	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", "*")) {
		bytes = mail_format_get_data_wrapper_text (data, NULL);
		
		if (bytes) {
			g_byte_array_append (bytes, "", 1);
			text = bytes->data;
			g_byte_array_free (bytes, FALSE);
		}
		
		if (text && !header_content_type_is (mime_type, "text", "html")) {
			char *html;
			
			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 = "
\n> ----
\n> 
\n";
		else
			div = "
\n----
\n
\n";
	} else
		div = "

";
	
	nparts = camel_multipart_get_number (mp);
	for (i = 0; i < nparts; i++) {
		subpart = camel_multipart_get_part (mp, i);
		
		/* only add to the body contents if it is marked as "inline" */
		if (!mail_part_is_inline (subpart))
			continue;
		
		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;
}