/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Authors: * Matt Loper * Dan Winship * * Copyright 2000, Helix Code, Inc. (http://www.helixcode.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Street #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 "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, MailDisplay *md); static char *try_inline_pgp_sig (char *start, MailDisplay *md); static char *try_uudecoding (char *start, MailDisplay *md); static char *try_inline_binhex (char *start, 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); 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 call_handler_function (CamelMimePart *part, MailDisplay *md); static void free_url (gpointer key, gpointer value, gpointer data) { g_free (key); } static void free_urls (gpointer urls) { g_hash_table_foreach (urls, free_url, NULL); g_hash_table_destroy (urls); } static char * add_url (char *url, gpointer data, MailDisplay *md) { GHashTable *urls; gpointer old_key, old_value; urls = g_datalist_get_data (md->data, "urls"); 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, "urls"); if (!urls) { urls = g_hash_table_new (g_str_hash, g_str_equal); g_datalist_set_data_full (md->data, "urls", urls, free_urls); } write_headers (mime_message, md); call_handler_function (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) { gchar *text; g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message)); text = get_data_wrapper_text (CAMEL_DATA_WRAPPER (mime_message)); mail_text_write (md->html, md->stream, "%s", text ? text : ""); g_free (text); } static const char * get_cid (CamelMimePart *part, MailDisplay *md) { GHashTable *urls; char *cid; gpointer orig_name, value; static int fake_cid_counter = 0; urls = g_datalist_get_data (md->data, "urls"); /* 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++); if (g_hash_table_lookup_extended (urls, cid, &orig_name, &value)) { g_free (cid); return orig_name; } else g_hash_table_insert (urls, cid, part); return cid; } static const char * get_url_for_icon (const char *icon_name, MailDisplay *md) { static GHashTable *icons; char *icon_path, buf[1024], *url; GByteArray *ba; if (!icons) icons = g_hash_table_new (g_str_hash, g_str_equal); if (*icon_name == '/') icon_path = g_strdup (icon_name); else { icon_path = gnome_pixmap_file (icon_name); if (!icon_path) return "file:///dev/null"; } ba = g_hash_table_lookup (icons, icon_path); if (!ba) { int fd, nread; fd = open (icon_path, O_RDONLY); if (fd == -1) { g_free (icon_path); 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); /* FIXME: these aren't freed. */ g_hash_table_insert (icons, g_strdup (icon_path), ba); } g_free (icon_path); url = g_strdup_printf ("x-evolution-data:%p", ba); return add_url (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); /* 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->application = gnome_vfs_mime_get_default_application (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->application) { 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; } static void attachment_header (CamelMimePart *part, const char *mime_type, gboolean is_inline, MailDisplay *md) { const char *info; char *htmlinfo; /* No header for anonymous inline parts. */ if (is_inline && is_anonymous (part, mime_type)) return; /* Start the table, create the pop-up object. */ mail_html_write (md->html, md->stream, "
" "" "", get_cid (part, md), mime_type); /* Write the MIME type */ info = gnome_vfs_mime_get_value (mime_type, "description"); htmlinfo = e_text_to_html (info ? info : mime_type, 0); mail_html_write (md->html, md->stream, _("%s attachment"), htmlinfo); g_free (htmlinfo); /* 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, "
Click on the icon to %s.", action); } #endif mail_html_write (md->html, md->stream, "
"); } static gboolean call_handler_function (CamelMimePart *part, MailDisplay *md) { CamelDataWrapper *wrapper; char *mime_type; MailMimeHandler *handler; gboolean output, is_inline; wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); if (CAMEL_IS_MULTIPART (wrapper) && camel_multipart_get_number (CAMEL_MULTIPART (wrapper)) == 0) { mail_error_write (md->html, md->stream, _("Could not parse MIME message. Displaying as source.")); if (mail_content_loaded (wrapper, md)) 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; 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); } } is_inline = mail_part_is_inline (part); attachment_header (part, mime_type, is_inline, md); if (handler && handler->builtin && is_inline && mail_content_loaded (wrapper, md)) 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, }; static void write_field_row_begin (const char *description, gint flags, GtkHTML *html, GtkHTMLStream *stream) { char *encoded_desc; int bold = (flags & WRITE_BOLD) == WRITE_BOLD; encoded_desc = e_utf8_from_gtk_string (GTK_WIDGET (html), description); mail_html_write (html, stream, "<%s align=\"right\" valign=\"top\">%s", bold ? "th" : "td", encoded_desc, bold ? "th" : "td"); g_free (encoded_desc); } 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 ", datestr); g_free (datestr); } static void write_subject (const char *subject, int flags, GtkHTML *html, GtkHTMLStream *stream) { char *encoded_subj; if (subject) encoded_subj = e_text_to_html (subject, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS); else encoded_subj = ""; write_field_row_begin (_("Subject:"), flags, html, stream); mail_html_write (html, stream, "%s ", encoded_subj); if (subject) g_free (encoded_subj); } static void write_address(MailDisplay *md, const CamelInternetAddress *addr, const char *field_name, int flags) { const char *name, *email; gboolean name_set, mail_set; 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)) { if ((name && *name) || (email && *email)) { /* we need these to separate HTMLText objects */ mail_html_write (md->html, md->stream, i ? ", " : ""); mail_html_write (md->html, md->stream, " "); name_set = mail_set = FALSE; if (name && *name) { mail_html_write (md->html, md->stream, "", name); name_set = TRUE; } if (email && *email) { mail_html_write (md->html, md->stream, "", email); mail_set = TRUE; } if (name && *name) mail_html_write (md->html, md->stream, "%s ", name); if (email && *email) mail_html_write (md->html, md->stream, "%s%s%s", name && *name ? "<" : "", email, name && *name ? ">" : ""); if (name_set) mail_html_write (md->html, md->stream, ""); if (mail_set) mail_html_write (md->html, md->stream, ""); } ++i; } mail_html_write (md->html, md->stream, ""); /* Finish up the table row */ } static void write_headers (CamelMimeMessage *message, MailDisplay *md) { mail_html_write (md->html, md->stream, "" "
" "" "
\n"); write_address(md, camel_mime_message_get_from(message), _("From:"), WRITE_BOLD); write_address(md, camel_mime_message_get_reply_to(message), _("Reply-To:"), 0); write_address(md, camel_mime_message_get_recipients(message, CAMEL_RECIPIENT_TYPE_TO), _("To:"), WRITE_BOLD); write_address(md, camel_mime_message_get_recipients(message, CAMEL_RECIPIENT_TYPE_CC), _("Cc:"), WRITE_BOLD); write_subject (camel_mime_message_get_subject (message), WRITE_BOLD, md->html, md->stream); write_date (message,WRITE_BOLD, md->html, md->stream); mail_html_write (md->html, md->stream, "
"); } struct _load_content_msg { struct _mail_msg msg; MailDisplay *display; CamelMimeMessage *message; CamelDataWrapper *wrapper; }; static char * load_content_desc (struct _mail_msg *mm, int done) { return g_strdup (_("Loading message content")); } static void load_content_load (struct _mail_msg *mm) { struct _load_content_msg *m = (struct _load_content_msg *)mm; CamelStream *memstream; memstream = camel_stream_mem_new (); camel_data_wrapper_write_to_stream (m->wrapper, memstream); camel_object_unref (CAMEL_OBJECT (memstream)); } static void load_content_loaded (struct _mail_msg *mm) { struct _load_content_msg *m = (struct _load_content_msg *)mm; if (m->display->current_message == m->message) mail_display_queue_redisplay (m->display); } static void load_content_free (struct _mail_msg *mm) { struct _load_content_msg *m = (struct _load_content_msg *)mm; gtk_object_unref (GTK_OBJECT (m->display)); camel_object_unref (CAMEL_OBJECT (m->wrapper)); camel_object_unref (CAMEL_OBJECT (m->message)); } static struct _mail_msg_op load_content_op = { load_content_desc, load_content_load, load_content_loaded, load_content_free, }; gboolean mail_content_loaded (CamelDataWrapper *wrapper, MailDisplay *md) { struct _load_content_msg *m; GHashTable *loading; if (!camel_data_wrapper_is_offline (wrapper)) return TRUE; loading = g_datalist_get_data (md->data, "loading"); if (loading) { if (g_hash_table_lookup (loading, wrapper)) return FALSE; } else { loading = g_hash_table_new (NULL, NULL); g_datalist_set_data_full (md->data, "loading", loading, (GDestroyNotify)g_hash_table_destroy); } g_hash_table_insert (loading, wrapper, GINT_TO_POINTER (1)); m = mail_msg_new (&load_content_op, NULL, sizeof (*m)); m->display = md; gtk_object_ref (GTK_OBJECT (m->display)); m->message = md->current_message; camel_object_ref (CAMEL_OBJECT (m->message)); m->wrapper = wrapper; camel_object_ref (CAMEL_OBJECT (m->wrapper)); e_thread_put (mail_thread_queued, (EMsg *)m); 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; 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); camel_data_wrapper_write_to_stream (wrapper, memstream); camel_object_unref (CAMEL_OBJECT (memstream)); 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, 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\n 
\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") != 0; 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, 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, "
"); } /* 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); return TRUE; } static gboolean handle_text_plain_flowed (char *buf, MailDisplay *md) { char *text, *line, *eol, *p; int prevquoting = 0, quoting, len; gboolean br_pending = FALSE; mail_html_write (md->html, md->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) { mail_html_write (md->html, md->stream, "%s\n", prevquoting == 0 ? "\n" : ""); while (quoting > prevquoting) { mail_html_write (md->html, md->stream, "
"); prevquoting++; } while (quoting < prevquoting) { mail_html_write (md->html, md->stream, "
"); prevquoting--; } mail_html_write (md->html, md->stream, "%s\n", prevquoting == 0 ? "\n" : ""); } else if (br_pending) { mail_html_write (md->html, md->stream, "
\n"); br_pending = FALSE; } if (*p == ' ') p++; /* 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); len = strlen (p); if (len == 0 || p[len - 1] != ' ' || !strcmp (p, "-- ")) br_pending = TRUE; if (!eol) break; } g_free (buf); mail_html_write (md->html, md->stream, "\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 */ /* another FIXME: this doesn't have to return plaintext you realize... */ 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 ()); camel_pgp_decrypt (ctx, ciphertext, plaintext, &ex); camel_object_unref (CAMEL_OBJECT (ctx)); camel_stream_reset (plaintext); if (!camel_exception_is_set (&ex)) return; } mail_html_write (md->html, md->stream, "
" "" "", get_url_for_icon ("gnome-lockscreen.png", md)); if (camel_exception_is_set (&ex)) { mail_html_write (md->html, md->stream, "%s

\n", _("Encrypted message not displayed")); mail_error_write (md->html, md->stream, camel_exception_get_description (&ex)); camel_exception_clear (&ex); } else { mail_html_write (md->html, md->stream, "%s

\n%s", _("Encrypted message"), _("Click icon to decrypt.")); } mail_html_write (md->html, md->stream, "
"); } static char * try_inline_pgp (char *start, 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, "
"); /* FIXME: uhm, pgp decrypted data doesn't have to be plaintext * however, I suppose that since it was 'inline', it probably is */ 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, "
"); mail_text_write (md->html, md->stream, "%.*s", buffer->len, buffer->data); mail_html_write (md->html, md->stream, "
"); } camel_object_unref (CAMEL_OBJECT (plaintext)); return end; } static char * try_inline_pgp_sig (char *start, MailDisplay *md) { CamelPgpContext *context; CamelStream *ciphertext; CamelCipherValidity *valid; CamelException *ex; char *end; end = strstr (start, "-----END PGP SIGNATURE-----"); if (!end) return start; end += strlen ("-----END PGP SIGNATURE-----"); mail_html_write (md->html, md->stream, "
"); context = camel_pgp_context_new (session, mail_config_get_pgp_type (), mail_config_get_pgp_path ()); ciphertext = camel_stream_mem_new (); camel_stream_write (ciphertext, start, end - start); camel_stream_reset (ciphertext); ex = camel_exception_new (); valid = camel_pgp_verify (context, ciphertext, NULL, ex); camel_object_unref (CAMEL_OBJECT (ciphertext)); camel_object_unref (CAMEL_OBJECT (context)); mail_text_write (md->html, md->stream, "%.*s", end - start, start); /* Now display the "seal-of-authenticity" or something... */ if (valid && camel_cipher_validity_get_valid (valid)) { mail_html_write (md->html, md->stream, "
\n" "" "
%s

", get_url_for_icon ("wax-seal2.png", md), _("This message is digitally signed and " "has been found to be authentic.")); } else { mail_html_write (md->html, md->stream, "
\n" "" "
%s

", get_url_for_icon ("wax-seal-broken.png", md), _("This message is digitally signed but can " "not be proven to be authentic.")); } if (valid && camel_cipher_validity_get_description (valid)) { mail_error_write (md->html, md->stream, camel_cipher_validity_get_description (valid)); mail_html_write (md->html, md->stream, "

"); } mail_html_write (md->html, md->stream, "
"); camel_exception_free (ex); camel_cipher_validity_free (valid); return end; } static char * try_uudecoding (char *start, 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, "
"); call_handler_function (part, md); return p + 4; } static char * try_inline_binhex (char *start, 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, "
"); call_handler_function (part, md); return p; } static void free_byte_array (CamelObject *obj, gpointer event_data, gpointer user_data) { /* We don't have to do a forward event here right now */ g_byte_array_free (user_data, TRUE); } /* 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", ""); 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", "
"); } 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\n"); } else { enriched = TRUE; mail_html_write (md->html, md->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... */ 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, "
"); 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, strlen (string->str)); g_string_free (string, TRUE); xed = g_strdup_printf ("x-evolution-data:%p", part); mail_html_write (md->html, md->stream, "", xed); add_url (xed, ba, md); camel_object_hook_event (CAMEL_OBJECT (md->current_message), "finalize", free_byte_array, ba); return TRUE; } static gboolean handle_text_html (CamelMimePart *part, const char *mime_type, MailDisplay *md) { mail_html_write (md->html, md->stream, "\n\n"); mail_html_write (md->html, md->stream, "", get_cid (part, md)); return TRUE; } static gboolean handle_image (CamelMimePart *part, const char *mime_type, MailDisplay *md) { mail_html_write (md->html, md->stream, "", 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, "
\n"); part = camel_multipart_get_part (mp, i); output = call_handler_function (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 { gboolean retcode; retcode = call_handler_function (mime_part, md); camel_object_unref (CAMEL_OBJECT (mime_part)); return retcode; } } 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); /* Currently we only handle RFC2015-style PGP signatures. */ if (!camel_pgp_mime_is_rfc2015_signed (part)) return handle_multipart_mixed (part, mime_type, md); ex = camel_exception_new (); valid = mail_crypto_pgp_mime_part_verify (part, ex); /* now display all the subparts *except* the signature */ 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, "
\n"); part = camel_multipart_get_part (mp, i); output = call_handler_function (part, md); } /* Now display the "seal-of-authenticity" or something... */ if (valid && camel_cipher_validity_get_valid (valid)) { mail_html_write (md->html, md->stream, "
\n" "" "
%s

", get_url_for_icon ("wax-seal2.png", md), _("This message is digitally signed and " "has been found to be authentic.")); } else { mail_html_write (md->html, md->stream, "
\n" "" "
%s

", get_url_for_icon ("wax-seal-broken.png", md), _("This message is digitally signed but can " "not be proven to be authentic.")); } if (valid && camel_cipher_validity_get_description (valid)) { mail_error_write (md->html, md->stream, camel_cipher_validity_get_description (valid)); mail_html_write (md->html, md->stream, "

"); } mail_html_write (md->html, md->stream, "
"); camel_exception_free (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) { 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-IDs 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); } /* Now, display the displayed part. */ return call_handler_function (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 call_handler_function (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 call_handler_function (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, "
"); mail_format_mime_message (CAMEL_MIME_MESSAGE (wrapper), md); mail_html_write (md->html, md->stream, "
"); 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; 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); desc = g_strdup_printf (_("Pointer to FTP site (%s)"), url); } 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) { desc = g_strdup_printf (_("Pointer to local file (%s) " "valid at site \"%s\""), name, site); } else { desc = g_strdup_printf (_("Pointer to local file (%s)"), name); } } 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; desc = g_strdup_printf ("Pointer to remote data (%s)", url); } fallback: if (!desc) { if (access_type) { desc = g_strdup_printf (_("Pointer to unknown " "external data " "(\"%s\" type)"), access_type); } else desc = g_strdup (_("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, "", get_cid (part, md), mime_type); return TRUE; } char * mail_get_message_body (CamelDataWrapper *data, gboolean want_plain, gboolean *is_html) { CamelMultipart *mp; CamelMimePart *subpart; int i, nparts; char *subtext, *old; const char *boundary; char *text = NULL; CamelContentType *mime_type; /* We only include text, message, and multipart bodies. */ mime_type = camel_data_wrapper_get_mime_type_field (data); /* FIXME: This is wrong. We don't want to include large * images. But if we don't do it this way, we don't get * the headers... */ if (header_content_type_is (mime_type, "message", "*")) { *is_html = FALSE; return get_data_wrapper_text (data); } if (header_content_type_is (mime_type, "text", "*")) { *is_html = header_content_type_is (mime_type, "text", "html"); return get_data_wrapper_text (data); } /* 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, is_html); } nparts = camel_multipart_get_number (mp); /* Otherwise, concatenate all the parts that we can. If we find * an HTML part in there though, return just that: We don't want * to deal with merging HTML and non-HTML parts. */ boundary = camel_multipart_get_boundary (mp); for (i = 0; i < nparts; i++) { subpart = camel_multipart_get_part (mp, i); if (!mail_part_is_inline (subpart)) continue; data = camel_medium_get_content_object ( CAMEL_MEDIUM (subpart)); subtext = mail_get_message_body (data, want_plain, is_html); if (!subtext) continue; if (*is_html) { g_free (text); return subtext; } if (text) { old = text; text = g_strdup_printf ("%s\n--%s\n%s", old, boundary, subtext); g_free (subtext); g_free (old); } else text = subtext; } return text; }