/* -*- 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. * */ #include #include "mail-display.h" #include "mail.h" #include "e-util/e-html-utils.h" #include #include #include #include /* for isprint */ #include /* for strstr */ #include static char *try_inline_pgp (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_audio (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_unknown_type (CamelMimePart *part, const char *mime_type, MailDisplay *md); static gboolean handle_via_bonobo (CamelMimePart *part, const char *mime_type, MailDisplay *md); static gboolean handle_via_external (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 void 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_if_fail (urls != NULL); if (g_hash_table_lookup_extended (urls, url, &old_key, &old_value)) g_free (old_key); g_hash_table_insert (urls, url, data); } /** * 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); } static const char * get_cid (CamelMimePart *part, MailDisplay *md) { GHashTable *urls; char *cid; gpointer orig_name, value; 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) 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:@@@%p", part); 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); g_hash_table_insert (icons, icon_path, ba); } g_free (icon_path); url = g_strdup_printf ("x-evolution-data:%p", ba); add_url (url, ba, md); return url; } /* We're maintaining a hashtable of mimetypes -> functions; * Those functions have the following signature... */ typedef gboolean (*mime_handler_fn) (CamelMimePart *part, const char *mime_type, MailDisplay *md); static GHashTable *mime_function_table, *mime_fallback_table; static void setup_function_table (void) { mime_function_table = g_hash_table_new (g_str_hash, g_str_equal); mime_fallback_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/*", handle_image); g_hash_table_insert (mime_function_table, "audio/*", handle_audio); 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); /* 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_fallback_table, "text/*", handle_text_plain); g_hash_table_insert (mime_function_table, "multipart/*", handle_multipart_mixed); } static mime_handler_fn lookup_handler (const char *mime_type, gboolean *generic) { mime_handler_fn handler_function; char *mime_type_main; GnomeVFSMimeAction *action; if (mime_function_table == NULL) setup_function_table (); mime_type_main = g_strdup_printf ("%.*s/*", (int)strcspn (mime_type, "/"), mime_type); /* OK. There are 6 possibilities, which we try in this order: * 1) full match in the main table * 2) partial match in the main table * 3) full match in gnome_vfs_mime_* * 4) full match in the fallback table * 5) partial match in the fallback table * 6) partial match in gnome_vfs_mime_* * * Of these, 1-4 are considered exact matches, and 5 and 6 are * considered generic. */ /* Check for full match in mime_function_table. */ handler_function = g_hash_table_lookup (mime_function_table, mime_type); if (!handler_function) { handler_function = g_hash_table_lookup (mime_function_table, mime_type_main); if (handler_function) { /* Optimize this for the next time through. */ g_hash_table_insert (mime_function_table, g_strdup (mime_type), handler_function); } } if (handler_function) { g_free (mime_type_main); *generic = FALSE; return handler_function; } /* FIXME: Remove this #ifdef after gnome-vfs 0.3 is released */ #ifdef HAVE_GNOME_VFS_MIME_GET_DEFAULT_ACTION_WITHOUT_FALLBACK action = gnome_vfs_mime_get_default_action_without_fallback (mime_type); if (action) { if (action->action_type == GNOME_VFS_MIME_ACTION_TYPE_COMPONENT) handler_function = handle_via_bonobo; else handler_function = handle_via_external; /* Optimize this for the next time through. */ g_hash_table_insert (mime_function_table, g_strdup (mime_type), handler_function); g_free (mime_type_main); gnome_vfs_mime_action_free (action); *generic = FALSE; return handler_function; } #endif handler_function = g_hash_table_lookup (mime_fallback_table, mime_type); if (handler_function) *generic = FALSE; else { handler_function = g_hash_table_lookup (mime_fallback_table, mime_type_main); if (!handler_function) { action = gnome_vfs_mime_get_default_action (mime_type_main); if (action) { if (action->action_type == GNOME_VFS_MIME_ACTION_TYPE_COMPONENT) handler_function = handle_via_bonobo; else handler_function = handle_via_external; gnome_vfs_mime_action_free (action); } } *generic = TRUE; } g_free (mime_type_main); return handler_function; } static gboolean call_handler_function (CamelMimePart *part, MailDisplay *md) { CamelDataWrapper *wrapper; char *mime_type; mime_handler_fn handler_function = NULL; gboolean generic, output; wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); mime_type = camel_data_wrapper_get_mime_type (wrapper); g_strdown (mime_type); handler_function = lookup_handler (mime_type, &generic); if (handler_function) output = (*handler_function) (part, mime_type, md); else output = handle_unknown_type (part, mime_type, md); g_free (mime_type); return output; } static void write_field_to_stream (const char *description, const char *value, gboolean bold, GtkHTML *html, GtkHTMLStream *stream) { char *encoded_value; if (value) { unsigned char *p; encoded_value = e_text_to_html (value, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS); for (p = (unsigned char *)encoded_value; *p; p++) { if (!isprint (*p)) *p = '?'; } } else encoded_value = ""; mail_html_write (html, stream, "<%s align=right>%s" "%s", bold ? "th" : "td", description, bold ? "th" : "td", encoded_value); if (value) g_free (encoded_value); } static void write_headers (CamelMimeMessage *message, MailDisplay *md) { const CamelInternetAddress *recipients; const char *reply_to; char *string; mail_html_write (md->html, md->stream, "" "
\n"); write_field_to_stream ("From:", camel_mime_message_get_from (message), TRUE, md->html, md->stream); reply_to = camel_mime_message_get_reply_to (message); if (reply_to) { write_field_to_stream ("Reply-To:", reply_to, FALSE, md->html, md->stream); } recipients = camel_mime_message_get_recipients ( message, CAMEL_RECIPIENT_TYPE_TO); string = camel_address_encode (CAMEL_ADDRESS (recipients)); write_field_to_stream ("To:", string ? string : "", TRUE, md->html, md->stream); g_free (string); recipients = camel_mime_message_get_recipients ( message, CAMEL_RECIPIENT_TYPE_CC); string = camel_address_encode (CAMEL_ADDRESS (recipients)); if (string) { write_field_to_stream ("Cc:", string, TRUE, md->html, md->stream); } g_free (string); write_field_to_stream ("Subject:", camel_mime_message_get_subject (message), TRUE, md->html, md->stream); mail_html_write (md->html, md->stream, "

"); } /* Return the contents of a text-based data wrapper, or NULL if it * contains only whitespace. */ static char * get_data_wrapper_text (CamelDataWrapper *data) { CamelStream *memstream; GByteArray *ba; char *text, *end; ba = g_byte_array_new (); memstream = camel_stream_mem_new_with_byte_array (ba); camel_data_wrapper_write_to_stream (data, memstream); for (text = ba->data, end = ba->data + ba->len; text < end; text++) { if (!isspace ((unsigned char)*text)) break; } if (text < end) { text = g_malloc (ba->len + 1); memcpy (text, ba->data, ba->len); text[ba->len] = '\0'; } else text = NULL; camel_object_unref (CAMEL_OBJECT (memstream)); return text; } /*----------------------------------------------------------------------* * Mime handling functions *----------------------------------------------------------------------*/ struct { char *start; char * (*handler) (char *start, MailDisplay *md); } text_specials[] = { { "-----BEGIN PGP MESSAGE-----\n", try_inline_pgp }, { "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, *subtext; GMimeContentField *type; 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 = gmime_content_field_get_parameter (type, "format"); if (format && !g_strcasecmp (format, "flowed")) return handle_text_plain_flowed (text, md); mail_html_write (md->html, md->stream, "\n\n"); p = text; while (p) { /* 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) { subtext = g_strndup (p, start - p); mail_text_write (md->html, md->stream, "%s", subtext); g_free (subtext); } 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; subtext = g_strndup (start, p - start); mail_text_write (md->html, md->stream, "%s", subtext); g_free (subtext); } 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"); 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)); return part; } static void destroy_part (CamelObject *root, gpointer event_data, gpointer user_data) { camel_object_unref (user_data); } static char * decode_pgp (const char *ciphertext, MailDisplay *md) { CamelException ex; char *plaintext; camel_exception_init (&ex); #ifdef PGP_PROGRAM /* FIXME: multipart parts */ if (!g_datalist_get_data (md->data, "show_pgp")) { mail_html_write (md->html, md->stream, "
" "" "" "Click on the icon to decrypt this " "message.
", get_url_for_icon ("gnome-lockscreen.png", md)); return NULL; } else plaintext = mail_crypto_openpgp_decrypt (ciphertext, &ex); #else camel_exception_set (&ex, CAMEL_EXCEPTION_SYSTEM, "No GPG/PGP support available in this copy " "of Evolution."); #endif if (camel_exception_is_set (&ex)) { mail_html_write (md->html, md->stream, "
" "
" "
", get_url_for_icon ("gnome-lockscreen.png", md)); mail_error_write (md->html, md->stream, "(Encrypted message not displayed)\n\n%s", camel_exception_get_description (&ex)); mail_html_write (md->html, md->stream, "
"); camel_exception_clear (&ex); } return plaintext; } static char * try_inline_pgp (char *start, MailDisplay *md) { char *end, *ciphertext, *plaintext; /* FIXME: This should deal with signed data as well. */ end = strstr (start, "-----END PGP MESSAGE-----"); if (!end) return start; end += sizeof ("-----END PGP MESSAGE-----") - 1; mail_html_write (md->html, md->stream, "
"); ciphertext = g_strndup (start, end - start); plaintext = decode_pgp (ciphertext, md); g_free (ciphertext); if (plaintext) { mail_text_write (md->html, md->stream, "%s", plaintext); g_free (plaintext); } 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); add_url (xed, ba, md); camel_object_hook_event (CAMEL_OBJECT (md->current_message), "finalize", free_byte_array, ba); mail_html_write (md->html, md->stream, "", xed); 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 is_rfc2015 (CamelMimePart *part) { int nparts; char *text; CamelDataWrapper *wrapper; CamelMultipart *mp; GMimeContentField *type; wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); mp = CAMEL_MULTIPART (wrapper); nparts = camel_multipart_get_number (mp); if (nparts != 2) return FALSE; /* Check for application/pgp-encrypted in the first part. */ part = camel_multipart_get_part (mp, 0); type = camel_mime_part_get_content_type (part); if (!gmime_content_field_is_type (type, "application", "pgp-encrypted")) return FALSE; /* Check version. */ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); text = get_data_wrapper_text (wrapper); if (!text || !strstr(text, "Version: 1")) { g_free(text); return FALSE; } g_free(text); /* Check for application/octet-stream in the second part. */ part = camel_multipart_get_part(mp, 1); type = camel_mime_part_get_content_type (part); if (!gmime_content_field_is_type (type, "application", "octet-stream")) return FALSE; return TRUE; } static gboolean handle_multipart_encrypted (CamelMimePart *part, const char *mime_type, MailDisplay *md) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *mp; char *ciphertext, *plaintext; g_return_val_if_fail (CAMEL_IS_MULTIPART (wrapper), FALSE); mp = CAMEL_MULTIPART (wrapper); /* Currently we only handle RFC2015-style PGP encryption. */ if (!is_rfc2015 (part)) return handle_multipart_mixed (part, mime_type, md); part = camel_multipart_get_part (mp, 1); wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); ciphertext = get_data_wrapper_text (wrapper); if (!ciphertext) return FALSE; plaintext = decode_pgp (ciphertext, md); if (plaintext) { CamelStream *memstream; memstream = camel_stream_mem_new_with_buffer (plaintext, strlen (plaintext)); part = camel_mime_part_new (); camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (part), memstream); camel_object_unref (CAMEL_OBJECT (memstream)); call_handler_function (part, md); camel_object_hook_event (CAMEL_OBJECT (md->current_message), "finalize", destroy_part, part); g_free (plaintext); } 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; GMimeContentField *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 = gmime_content_field_get_parameter (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; } } if (!display_part) { /* Oops. Hrmph. */ return handle_multipart_mixed (part, mime_type, md); } } else { /* No start parameter, so it defaults to the first part. */ display_part = camel_multipart_get_part (mp, 0); } /* 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; gboolean generic; nparts = camel_multipart_get_number (multipart); for (i = 0; i < nparts; i++) { CamelMimePart *part = camel_multipart_get_part (multipart, i); char *mime_type = gmime_content_field_get_mime_type ( camel_mime_part_get_content_type (part)); g_strdown (mime_type); if (want_plain && !strcmp (mime_type, "text/plain")) return part; if (lookup_handler (mime_type, &generic) && (!preferred_part || !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_unknown_type (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 void handle_mystery (CamelMimePart *part, MailDisplay *md, const char *url, const char *icon_name, const char *id, const char *action) { const char *info; char *htmlinfo; GMimeContentField *content_type; mail_html_write (md->html, md->stream, "
"); /* Draw the icon, surrounded by an if we have a URL, * or a plain inactive border if not. */ if (url) { mail_html_write (md->html, md->stream, "", url); } else { mail_html_write (md->html, md->stream, "
"); } mail_html_write (md->html, md->stream, "", get_url_for_icon (icon_name, md)); if (url) mail_html_write (md->html, md->stream, ""); else mail_html_write (md->html, md->stream, "
"); mail_html_write (md->html, md->stream, "		%s
", id); /* 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, "Description: %s
", htmlinfo); g_free (htmlinfo); } /* Write the name, if we have it. */ content_type = camel_mime_part_get_content_type (part); info = gmime_content_field_get_parameter (content_type, "name"); if (!info) info = camel_mime_part_get_filename (part); if (info) { htmlinfo = e_text_to_html (info, 0); mail_html_write (md->html, md->stream, "Name: %s
", htmlinfo); g_free (htmlinfo); } /* Describe the click action, if any. */ if (action) { mail_html_write (md->html, md->stream, "
Click on the icon to %s.", action); } mail_html_write (md->html, md->stream, "
"); } static gboolean handle_audio (CamelMimePart *part, const char *mime_type, MailDisplay *md) { char *id; const char *desc; desc = gnome_vfs_mime_get_value (mime_type, "description"); if (desc) id = g_strdup_printf ("%s data", desc); else { id = g_strdup_printf ("Audio data in \"%s\" format.", mime_type); } handle_mystery (part, md, get_cid (part, md), "gnome-audio2.png", id, "play it"); g_free (id); return TRUE; } 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) { GMimeContentField *type; const char *access_type; char *url = NULL, *desc = NULL; type = camel_mime_part_get_content_type (part); access_type = gmime_content_field_get_parameter (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 = gmime_content_field_get_parameter (type, "name"); site = gmime_content_field_get_parameter (type, "site"); if (name == NULL || site == NULL) goto fallback; dir = gmime_content_field_get_parameter (type, "directory"); mode = gmime_content_field_get_parameter (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 = gmime_content_field_get_parameter (type, "name"); if (name == NULL) goto fallback; site = gmime_content_field_get_parameter (type, "site"); url = g_strdup_printf ("file://%s%s", *name == '/' ? "" : "/", name); desc = g_strdup_printf ("Pointer to local file (%s)%s%s%s", name, site ? " valid at site \"" : "", site ? site : "", site ? "\"" : ""); } else if (!g_strcasecmp (access_type, "URL")) { const char *urlparam; char *s, *d; /* RFC 2017 */ urlparam = gmime_content_field_get_parameter (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."); } handle_mystery (part, md, url, "gnome-globe.png", desc, url ? "open it in a browser" : NULL); g_free (desc); g_free (url); return TRUE; } static gboolean handle_undisplayable (CamelMimePart *part, const char *mime_type, MailDisplay *md) { const char *desc; char *id; desc = gnome_vfs_mime_get_value (mime_type, "description"); if (desc) id = g_strdup (desc); else id = g_strdup_printf ("Data of type \"%s\".", mime_type); handle_mystery (part, md, get_cid (part, md), "gnome-question.png", id, "save it to disk"); g_free (id); return TRUE; } static gboolean handle_unknown_type (CamelMimePart *part, const char *mime_type, MailDisplay *md) { char *type; /* Don't give up quite yet. */ type = mail_identify_mime_part (part); if (type) { mime_handler_fn handler_function; gboolean generic, output; handler_function = lookup_handler (type, &generic); if (handler_function && handler_function != handle_unknown_type) { output = (*handler_function) (part, type, md); g_free (type); return output; } } else type = g_strdup (mime_type); /* OK. Give up. */ handle_undisplayable (part, type, md); g_free (type); 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); /* Call handle_undisplayable to output its HTML inside the * ... . It will only be displayed if the * object loading fails. */ handle_undisplayable (part, mime_type, md); mail_html_write (md->html, md->stream, ""); return TRUE; } static gboolean handle_via_external (CamelMimePart *part, const char *mime_type, MailDisplay *md) { GnomeVFSMimeApplication *app; const char *desc, *icon; char *action, *url; app = gnome_vfs_mime_get_default_application (mime_type); g_return_val_if_fail (app != NULL, FALSE); desc = gnome_vfs_mime_get_value (mime_type, "description"); icon = gnome_vfs_mime_get_value (mime_type, "icon-filename"); if (!icon) icon = "gnome-unknown.png"; action = g_strdup_printf ("open the file in %s", app->name); url = g_strdup_printf ("x-evolution-external:%s", app->command); add_url (url, part, md); handle_mystery (part, md, url, icon, desc, action); g_free (action); 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, *disp; char *text = NULL; GMimeContentField *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 (g_strcasecmp (mime_type->type, "message") == 0) { *is_html = FALSE; return get_data_wrapper_text (data); } if (g_strcasecmp (mime_type->type, "text") == 0) { *is_html = !g_strcasecmp (mime_type->subtype, "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 (g_strcasecmp (mime_type->type, "multipart") != 0) return NULL; mp = CAMEL_MULTIPART (data); if (g_strcasecmp (mime_type->subtype, "alternative") == 0) { /* 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); disp = camel_mime_part_get_disposition (subpart); if (disp && g_strcasecmp (disp, "inline") != 0) 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", text, boundary, subtext); g_free (subtext); g_free (old); } else text = subtext; } if (!text) return NULL; return text; } EMsgComposer * mail_generate_reply (CamelMimeMessage *message, gboolean to_all) { CamelDataWrapper *contents; char *text, *subject; EMsgComposer *composer; gboolean want_plain, is_html; const char *repl_to, *message_id, *references; GList *to, *cc; want_plain = !mail_config_send_html (); contents = camel_medium_get_content_object (CAMEL_MEDIUM (message)); text = mail_get_message_body (contents, want_plain, &is_html); composer = E_MSG_COMPOSER (e_msg_composer_new ()); /* Set the quoted reply text. */ if (text) { char *repl_text; if (is_html) { repl_text = g_strdup_printf ("
\n%s\n" "
\n", text); } else { char *s, *d, *quoted_text; int lines, len; /* Count the number of lines in the body. If * the text ends with a \n, this will be one * too high, but that's ok. Allocate enough * space for the text and the "> "s. */ for (s = text, lines = 0; s; s = strchr (s + 1, '\n')) lines++; quoted_text = g_malloc (strlen (text) + lines * 2); s = text; d = quoted_text; /* Copy text to quoted_text line by line, * prepending "> ". */ while (1) { len = strcspn (s, "\n"); if (len == 0 && !*s) break; sprintf (d, "> %.*s\n", len, s); s += len; if (!*s++) break; d += len + 3; } /* Now convert that to HTML. */ repl_text = e_text_to_html (quoted_text, E_TEXT_TO_HTML_PRE); g_free (quoted_text); } e_msg_composer_set_body_text (composer, repl_text); g_free (repl_text); g_free (text); } /* Set the recipients */ repl_to = camel_mime_message_get_reply_to (message); if (!repl_to) repl_to = camel_mime_message_get_from (message); to = g_list_append (NULL, (gpointer)repl_to); if (to_all) { const CamelInternetAddress *recip; const char *name, *addr; char *fulladdr; int i; recip = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_TO); i = 0; cc = NULL; while (camel_internet_address_get (recip, i++, &name, &addr)) { if (*name) { fulladdr = g_strdup_printf ("\"%s\" <%s>", name, addr); } else fulladdr = g_strdup (addr); cc = g_list_append (cc, fulladdr); } recip = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_CC); i = 0; while (camel_internet_address_get (recip, i++, &name, &addr)) { if (*name) { fulladdr = g_strdup_printf ("\"%s\" <%s>", name, addr); } else fulladdr = g_strdup (addr); cc = g_list_append (cc, fulladdr); } } else cc = NULL; /* Set the subject of the new message. */ subject = (char *)camel_mime_message_get_subject (message); if (!subject) subject = g_strdup (""); else { if (!g_strncasecmp (subject, "Re: ", 4)) subject = g_strdup (subject); else subject = g_strdup_printf ("Re: %s", subject); } e_msg_composer_set_headers (composer, to, cc, NULL, subject); g_list_free (to); g_list_free (cc); g_free (subject); /* Add In-Reply-To and References. */ message_id = camel_medium_get_header (CAMEL_MEDIUM (message), "Message-Id"); references = camel_medium_get_header (CAMEL_MEDIUM (message), "References"); if (message_id) { e_msg_composer_add_header (composer, "In-Reply-To", message_id); if (references) { char *reply_refs; reply_refs = g_strdup_printf ("%s %s", references, message_id); e_msg_composer_add_header (composer, "References", reply_refs); g_free (reply_refs); } } else if (references) e_msg_composer_add_header (composer, "References", references); return composer; }