/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Author : * Matt Loper * * 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-format.h" #include "mail-display.h" #include "camel/hash-table-utils.h" #include #include #include #include #include /* for isprint */ #include /* for strstr */ #include static void handle_text_plain (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_text_plain_flowed (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_text_enriched (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_text_html (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_image (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_multipart_mixed (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_multipart_related (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_multipart_alternative (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_multipart_appledouble (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_audio (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_message_rfc822 (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_unknown_type (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static void handle_via_bonobo (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); /* encodes some characters into their 'escaped' version; * so '<' turns into '<', and '"' turns into '"' */ static gchar *text_to_html (const guchar *input, guint len, guint *encoded_len_return, gboolean add_pre, gboolean convert_newlines_to_br, gboolean convert_space_hack); /* writes the header info for a mime message into an html stream */ static void write_headers (CamelMimeMessage *mime_message, GtkBox *box); /* dispatch html printing via mimetype */ static void call_handler_function (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); /** * mail_format_mime_message: * @mime_message: the input mime message * @box: GtkBox to stack elements into. * * Writes a CamelMimeMessage out, as a series of GtkHTML objects, * into the provided box. **/ void mail_format_mime_message (CamelMimeMessage *mime_message, GtkBox *box) { g_return_if_fail (CAMEL_IS_MIME_MESSAGE (mime_message)); g_return_if_fail (GTK_IS_BOX (box)); write_headers (mime_message, box); call_handler_function (CAMEL_MIME_PART (mime_message), mime_message, box); } static char * get_cid (CamelMimePart *part, CamelMimeMessage *root) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); char *cid; /* 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 (camel_mime_part_get_content_id (part)); else cid = g_strdup_printf ("@@@%p", wrapper); gtk_object_set_data (GTK_OBJECT (root), cid, wrapper); return cid; } /* We're maintaining a hashtable of mimetypes -> functions; * Those functions have the following signature... */ typedef void (*mime_handler_fn) (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box); static GHashTable *mime_function_table, *mime_fallback_table; static GHashTable *mime_icon_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, "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); /* 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 CamelStream * icon_stream (char *path) { GByteArray *ba; char buf[8192]; int fd, nread; fd = open (path, O_RDONLY); if (fd == -1) return 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); return camel_stream_mem_new_with_byte_array (ba); } static void setup_icon_table (void) { char *path; mime_icon_table = g_hash_table_new (g_strcase_hash, g_strcase_equal); path = gnome_pixmap_file ("gnome-audio2.png"); if (path) { g_hash_table_insert (mime_icon_table, "audio", icon_stream (path)); g_free (path); } path = gnome_pixmap_file ("gnome-graphics.png"); if (path) { g_hash_table_insert (mime_icon_table, "image", icon_stream (path)); g_free (path); } path = gnome_pixmap_file ("gnome-qeye.png"); if (path) { g_hash_table_insert (mime_icon_table, "video", icon_stream (path)); g_free (path); } path = gnome_pixmap_file ("gnome-question.png"); if (path) { g_hash_table_insert (mime_icon_table, "unknown", icon_stream (path)); g_free (path); } } static mime_handler_fn lookup_handler (CamelMimePart *part, gboolean *generic) { CamelDataWrapper *wrapper; mime_handler_fn handler_function; const char *whole_goad_id, *generic_goad_id; char *mimetype_whole = NULL; char *mimetype_main = NULL; g_return_val_if_fail (CAMEL_IS_MIME_PART (part), NULL); if (mime_function_table == NULL) { setup_function_table (); setup_icon_table (); } wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); /* 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 bonobo * 4) full match in the fallback table * 5) partial match in the fallback table * 6) partial match in bonobo * * Of these, 1-4 are considered exact matches, and 5 and 6 are * considered generic. */ /* Check for full match in mime_function_table. */ mimetype_whole = camel_data_wrapper_get_mime_type (wrapper); g_strdown (mimetype_whole); mimetype_main = g_strdup_printf ("%s/*", wrapper->mime_type->type); g_strdown (mimetype_main); handler_function = g_hash_table_lookup (mime_function_table, mimetype_whole); if (!handler_function) { handler_function = g_hash_table_lookup (mime_function_table, mimetype_main); if (handler_function) { /* Optimize this for the next time through. */ g_hash_table_insert (mime_function_table, g_strdup (mimetype_whole), handler_function); } } if (handler_function) { g_free (mimetype_whole); g_free (mimetype_main); *generic = FALSE; return handler_function; } whole_goad_id = gnome_mime_get_value (mimetype_whole, "bonobo-goad-id"); generic_goad_id = gnome_mime_get_value (mimetype_main, "bonobo-goad-id"); if (whole_goad_id && (!generic_goad_id || strcmp (whole_goad_id, generic_goad_id) != 0)) { /* Optimize this for the next time through. */ g_hash_table_insert (mime_function_table, mimetype_whole, handle_via_bonobo); g_free (mimetype_main); *generic = FALSE; return handle_via_bonobo; } handler_function = g_hash_table_lookup (mime_fallback_table, mimetype_whole); g_free (mimetype_whole); if (handler_function) *generic = FALSE; else { handler_function = g_hash_table_lookup (mime_fallback_table, mimetype_main); if (!handler_function && generic_goad_id) handler_function = handle_via_bonobo; *generic = TRUE; } g_free (mimetype_main); return handler_function; } static void call_handler_function (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper; mime_handler_fn handler_function = NULL; gboolean generic; wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); handler_function = lookup_handler (part, &generic); if (handler_function) (*handler_function) (part, root, box); else handle_unknown_type (part, root, box); } /* Convert plain text into equivalent-looking valid HTML. */ static gchar * text_to_html (const guchar *input, guint len, guint *encoded_len_return, gboolean add_pre, gboolean convert_newlines_to_br, gboolean convert_space_hack) { const guchar *cur = input; guchar *buffer = NULL; guchar *out = NULL; gint buffer_size = 0; /* Allocate a translation buffer. */ buffer_size = len * 2 + 5; buffer = g_malloc (buffer_size); out = buffer; if (add_pre) out += sprintf (out, "
\n");

	while (len--) {
		if (out - buffer > buffer_size - 100) {
			gint index = out - buffer;

			buffer_size *= 2;
			buffer = g_realloc (buffer, buffer_size);
			out = buffer + index;
		}

		switch (*cur) {
		case '<':
			strcpy (out, "<");
			out += 4;
			break;

		case '>':
			strcpy (out, ">");
			out += 4;
			break;

		case '&':
			strcpy (out, "&");
			out += 5;
			break;

		case '"':
			strcpy (out, """);
			out += 6;
			break;

		case '\n':
			*out++ = *cur;
			if (convert_newlines_to_br) {
				strcpy (out, "
");
				out += 4;
			}
			break;

		case ' ':
			if (convert_space_hack) {
				if (cur == input ||
				    (len > 0 && *(cur + 1) == ' ')) {
					strcpy (out, " ");
					out += 6;
					break;
				}
			}
			/* otherwise, FALL THROUGH */

		default:
			if ((*cur >= 0x20 && *cur < 0x80) ||
			    (*cur == '\r' || *cur == '\t')) {
				/* Default case, just copy. */
				*out++ = *cur;
			} else
				out += g_snprintf(out, 9, "&#%d;", *cur);
			break;
		}

		cur++;
	}

	if (add_pre)
		strcpy (out, "
"); else *out = '\0'; if (encoded_len_return) *encoded_len_return = out - buffer; return buffer; } static void write_field_to_stream (const char *description, const char *value, gboolean bold, GtkHTML *html, GtkHTMLStreamHandle *stream) { char *encoded_value; if (value) { unsigned char *p; encoded_value = text_to_html (value, strlen(value), NULL, FALSE, TRUE, FALSE); 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_recipients_to_stream (const gchar *recipient_type, const GList *recipients, gboolean bold, GtkHTML *html, GtkHTMLStreamHandle *stream) { gchar *recipients_string = NULL; while (recipients) { gchar *old_string = recipients_string; recipients_string = g_strdup_printf ("%s%s%s", old_string ? old_string : "", old_string ? "; " : "", (gchar *)recipients->data); g_free (old_string); recipients = recipients->next; } write_field_to_stream (recipient_type, recipients_string, bold, html, stream); g_free (recipients_string); } static void write_headers (CamelMimeMessage *mime_message, GtkBox *box) { const GList *recipients; GtkHTML *html; GtkHTMLStreamHandle *stream; mail_html_new (&html, &stream, mime_message, FALSE); mail_html_write (html, stream, "%s%s", HTML_HEADER, "\n"); mail_html_write (html, stream, ""); /* A few fields will probably be available from the mime_message; * for each one that's available, write it to the output stream * with a helper function, 'write_field_to_stream'. */ write_field_to_stream ("From:", camel_mime_message_get_from (mime_message), TRUE, html, stream); if (camel_mime_message_get_reply_to (mime_message)) { write_field_to_stream ("Reply-To:", camel_mime_message_get_reply_to (mime_message), FALSE, html, stream); } write_recipients_to_stream ("To:", camel_mime_message_get_recipients (mime_message, CAMEL_RECIPIENT_TYPE_TO), TRUE, html, stream); recipients = camel_mime_message_get_recipients (mime_message, CAMEL_RECIPIENT_TYPE_CC); if (recipients) write_recipients_to_stream ("Cc:", recipients, TRUE, html, stream); write_field_to_stream ("Subject:", camel_mime_message_get_subject (mime_message), TRUE, html, stream); mail_html_write (html, stream, "
"); mail_html_end (html, stream, TRUE, box); } #define MIME_TYPE_WHOLE(a) (gmime_content_field_get_mime_type ( \ camel_mime_part_get_content_type (CAMEL_MIME_PART (a)))) #define MIME_TYPE_MAIN(a) ((camel_mime_part_get_content_type (CAMEL_MIME_PART (a)))->type) #define MIME_TYPE_SUB(a) ((camel_mime_part_get_content_type (CAMEL_MIME_PART (a)))->subtype) /*----------------------------------------------------------------------* * Mime handling functions *----------------------------------------------------------------------*/ static void handle_text_plain (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { GtkHTML *html; GtkHTMLStreamHandle *stream; CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); char *text; CamelStream *wrapper_output_stream; gchar tmp_buffer[4096]; gint nb_bytes_read; gboolean empty_text = TRUE; GMimeContentField *type; const char *format; mail_html_new (&html, &stream, root, TRUE); mail_html_write (html, stream, "\n\n
\n");

	/* Check for RFC 2646 flowed text. */
	type = camel_mime_part_get_content_type (part);
	format = gmime_content_field_get_parameter (type, "format");
	if (format && !strcasecmp (format, "flowed")) {
		handle_text_plain_flowed (part, root, box);
		return;
	}

	/* Get the output stream of the data wrapper. */
	wrapper_output_stream = camel_data_wrapper_get_output_stream (wrapper);
	camel_stream_reset (wrapper_output_stream);

	do {
		/* Read next chunk of text. */
		nb_bytes_read = camel_stream_read (wrapper_output_stream,
						   tmp_buffer,
						   sizeof (tmp_buffer));

		/* If there's any text, write it to the stream. */
		if (nb_bytes_read > 0) {
			int returned_strlen;

			empty_text = FALSE;

			/* replace '<' with '<', etc. */
			text = text_to_html (tmp_buffer,
					     nb_bytes_read,
					     &returned_strlen,
					     FALSE, FALSE, FALSE);
			gtk_html_write (html, stream, text,
					returned_strlen);
			g_free (text);
		}
	} while (!camel_stream_eos (wrapper_output_stream));

	if (empty_text)
		mail_html_write (html, stream, "(empty)");

	mail_html_write (html, stream, "
\n"); mail_html_end (html, stream, TRUE, box); } static void handle_text_plain_flowed (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { GtkHTML *html; GtkHTMLStreamHandle *stream; CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); char *text, *line, *p; CamelStream *wrapper_output_stream, *buffer; int prevquoting = 0, quoting, len, returned_strlen; gboolean br_pending = FALSE; mail_html_new (&html, &stream, root, TRUE); mail_html_write (html, stream, "\n\n\n"); /* Get the output stream of the data wrapper. */ wrapper_output_stream = camel_data_wrapper_get_output_stream (wrapper); camel_stream_reset (wrapper_output_stream); buffer = camel_stream_buffer_new (wrapper_output_stream, CAMEL_STREAM_BUFFER_READ); do { /* Read next chunk of text. */ line = camel_stream_buffer_read_line ( CAMEL_STREAM_BUFFER (buffer)); if (!line) break; quoting = 0; for (p = line; *p == '>'; p++) quoting++; if (quoting != prevquoting) { mail_html_write (html, stream, "%s\n", prevquoting == 0 ? "\n" : ""); while (quoting > prevquoting) { mail_html_write (html, stream, "
"); prevquoting++; } while (quoting < prevquoting) { mail_html_write (html, stream, "
"); prevquoting--; } mail_html_write (html, stream, "%s\n", prevquoting == 0 ? "\n" : ""); } else if (br_pending) { mail_html_write (html, stream, "
\n"); br_pending = FALSE; } if (*p == ' ') p++; len = strlen (p); /* replace '<' with '<', etc. */ text = text_to_html (p, len, &returned_strlen, FALSE, FALSE, TRUE); if (returned_strlen) gtk_html_write (html, stream, text, returned_strlen); g_free (text); if (len == 0 || p[len - 1] != ' ' || !strcmp (p, "-- ")) br_pending = TRUE; g_free (line); } while (!camel_stream_eos (buffer)); camel_stream_close (buffer); mail_html_write (html, stream, "\n"); mail_html_end (html, stream, TRUE, box); } /* text/enriched (RFC 1896) or text/richtext (included in RFC 1341) */ static void handle_text_enriched (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { static GHashTable *translations = NULL; GtkHTML *html; GtkHTMLStreamHandle *stream; CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelStream *memstream; GByteArray *ba; char *p; int len, nofill = 0; 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, "nl", "
"); g_hash_table_insert (translations, "np", "
"); } mail_html_new (&html, &stream, root, TRUE); mail_html_write (html, stream, "\n\n"); ba = g_byte_array_new (); memstream = camel_stream_mem_new_with_byte_array (ba); camel_data_wrapper_write_to_stream (wrapper, memstream); g_byte_array_append (ba, "", 1); p = ba->data; while (p) { len = strcspn (p, " <>&\n"); if (len) gtk_html_write (html, stream, p, len); p += len; if (!*p) break; switch (*p++) { case ' ': while (*p == ' ') { mail_html_write (html, stream, " "); p++; } mail_html_write (html, stream, " "); break; case '\n': mail_html_write (html, stream, " "); if (nofill <= 0) { while (*p == '\n') { mail_html_write (html, stream, "
"); p++; } } break; case '>': mail_html_write (html, stream, ">"); break; case '&': mail_html_write (html, stream, "&"); break; case '<': if (*p == '<') { mail_html_write (html, stream, "<"); break; } if (strncmp (p, "lt>", 3) == 0) mail_html_write (html, stream, "<"); else if (strncmp (p, "nofill>", 7) == 0) { nofill++; mail_html_write (html, stream, "
");
			} else if (strncmp (p, "/nofill>", 8) == 0) {
				nofill--;
				mail_html_write (html, stream, "
"); } else { char *copy, *match; len = strcspn (p, ">"); copy = g_strndup (p, len); match = g_hash_table_lookup (translations, copy); g_free (copy); if (match) mail_html_write (html, stream, match); } p = strchr (p, '>'); if (p) p++; } } mail_html_end (html, stream, TRUE, box); } static void handle_text_html (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { GtkHTML *html; GtkHTMLStreamHandle *stream; CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelStream *wrapper_output_stream; gchar tmp_buffer[4096]; gint nb_bytes_read; gboolean empty_text = TRUE; mail_html_new (&html, &stream, root, FALSE); mail_html_write (html, stream, "\n\n"); /* Get the output stream of the data wrapper. */ wrapper_output_stream = camel_data_wrapper_get_output_stream (wrapper); camel_stream_reset (wrapper_output_stream); do { /* Read next chunk of text. */ nb_bytes_read = camel_stream_read (wrapper_output_stream, tmp_buffer, 4096); /* If there's any text, write it to the stream */ if (nb_bytes_read > 0) { empty_text = FALSE; /* Write the buffer to the html stream */ gtk_html_write (html, stream, tmp_buffer, nb_bytes_read); } } while (!camel_stream_eos (wrapper_output_stream)); if (empty_text) mail_html_write (html, stream, "(empty)"); mail_html_end (html, stream, FALSE, box); } static void handle_image (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { GtkHTML *html; GtkHTMLStreamHandle *stream; char *cid; cid = get_cid (part, root); mail_html_new (&html, &stream, root, TRUE); mail_html_write (html, stream, "", cid); mail_html_end (html, stream, TRUE, box); g_free (cid); } static void handle_multipart_mixed (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *mp; int i, nparts; g_return_if_fail (CAMEL_IS_MULTIPART (wrapper)); mp = CAMEL_MULTIPART (wrapper); nparts = camel_multipart_get_number (mp); for (i = 0; i < nparts; i++) { CamelMimeBodyPart *body_part = camel_multipart_get_part (mp, i); call_handler_function (CAMEL_MIME_PART (body_part), root, box); } } /* As seen in RFC 2387! */ static void handle_multipart_related (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *mp; CamelMimeBodyPart *body_part, *display_part = NULL; GMimeContentField *content_type; const char *start; int i, nparts; g_return_if_fail (CAMEL_IS_MULTIPART (wrapper)); 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 ( CAMEL_MIME_PART (body_part)); if (!strncmp (cid, start + 1, len) && strlen (cid) == len) { display_part = body_part; break; } } if (!display_part) { /* Oops. Hrmph. */ handle_multipart_mixed (part, root, box); } } 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++) { char *cid; body_part = camel_multipart_get_part (mp, i); if (body_part == display_part) continue; part = CAMEL_MIME_PART (body_part); cid = get_cid (part, root); g_free (cid); } /* Now, display the displayed part. */ call_handler_function (CAMEL_MIME_PART (display_part), root, box); } /* RFC 2046 says "display the last part that you are able to display". */ static CamelMimePart * find_preferred_alternative (CamelMultipart *multipart) { int i, nparts; CamelMimePart *preferred_part = NULL; gboolean generic; nparts = camel_multipart_get_number (multipart); for (i = 0; i < nparts; i++) { CamelMimePart *part = CAMEL_MIME_PART ( camel_multipart_get_part (multipart, i)); if (lookup_handler (part, &generic) && (!preferred_part || !generic)) preferred_part = part; } return preferred_part; } static void handle_multipart_alternative (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *multipart; CamelMimePart *mime_part; g_return_if_fail (CAMEL_IS_MULTIPART (wrapper)); multipart = CAMEL_MULTIPART (wrapper); mime_part = find_preferred_alternative (multipart); if (mime_part) call_handler_function (mime_part, root, box); else handle_unknown_type (part, root, box); } /* RFC 1740 */ static void handle_multipart_appledouble (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); CamelMultipart *multipart; g_return_if_fail (CAMEL_IS_MULTIPART (wrapper)); 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_MIME_PART (camel_multipart_get_part (multipart, 1)); call_handler_function (part, root, box); } static void handle_mystery (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box, char *icon_cid, char *id, char *action) { GtkHTML *html; GtkHTMLStreamHandle *stream; char *cid; cid = get_cid (part, root); mail_html_new (&html, &stream, root, TRUE); mail_html_write (html, stream, "" "
" "%s

Click on the icon to %s." "
", get_cid (part, root), icon_cid, id, action); mail_html_end (html, stream, TRUE, box); } static void handle_audio (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { char *cid, *id; cid = g_hash_table_lookup (mime_icon_table, "audio"); id = g_strdup_printf ("Audio data in \"%s\" format.", camel_mime_part_get_content_type (part)->subtype); handle_mystery (part, root, box, cid, id, "play it"); g_free (id); } static void handle_message_rfc822 (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); GtkWidget *subbox, *frame; g_return_if_fail (CAMEL_IS_MIME_MESSAGE (wrapper)); subbox = gtk_vbox_new (FALSE, 2); mail_format_mime_message (CAMEL_MIME_MESSAGE (wrapper), GTK_BOX (subbox)); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); gtk_container_set_border_width (GTK_CONTAINER (frame), 8); gtk_box_pack_start (box, frame, FALSE, FALSE, 0); gtk_container_add (GTK_CONTAINER (frame), subbox); gtk_widget_show_all (frame); } static void handle_unknown_type (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { char *cid, *id; cid = g_hash_table_lookup (mime_icon_table, "unknown"); id = g_strdup_printf ("Unknown data of type \"%s/%s\".", camel_mime_part_get_content_type (part)->type, camel_mime_part_get_content_type (part)->subtype); handle_mystery (part, root, box, cid, id, "save it to disk"); g_free (id); } static void embeddable_destroy_cb (GtkObject *obj, gpointer user_data) { BonoboWidget *be; /* bonobo embeddable */ BonoboViewFrame *vf; /* the embeddable view frame */ BonoboObjectClient* server; CORBA_Environment ev; be = BONOBO_WIDGET (obj); server = bonobo_widget_get_server (be); vf = bonobo_widget_get_view_frame (be); bonobo_control_frame_control_deactivate ( BONOBO_CONTROL_FRAME (vf)); /* w = bonobo_control_frame_get_widget (BONOBO_CONTROL_FRAME (vf)); */ /* gtk_widget_destroy (w); */ CORBA_exception_init (&ev); Bonobo_Unknown_unref ( bonobo_object_corba_objref (BONOBO_OBJECT(server)), &ev); CORBA_Object_release ( bonobo_object_corba_objref (BONOBO_OBJECT(server)), &ev); CORBA_exception_free (&ev); bonobo_object_destroy (BONOBO_OBJECT (vf)); /* gtk_object_unref (obj); */ } static void handle_via_bonobo (CamelMimePart *part, CamelMimeMessage *root, GtkBox *box) { CamelDataWrapper *wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part)); GMimeContentField *type; char *mimetype; const char *goad_id; GtkWidget *embedded; BonoboObjectClient *server; Bonobo_PersistStream persist; CORBA_Environment ev; GByteArray *ba; CamelStream *cstream; BonoboStream *bstream; type = camel_data_wrapper_get_mime_type_field ( camel_medium_get_content_object (CAMEL_MEDIUM (part))); mimetype = g_strdup_printf ("%s/%s", type->type, type->subtype); goad_id = gnome_mime_get_value (mimetype, "bonobo-goad-id"); g_free (mimetype); if (!goad_id) goad_id = gnome_mime_get_value (type->type, "bonobo-goad-id"); if (!goad_id) return; embedded = bonobo_widget_new_subdoc (goad_id, NULL); if (!embedded) return; server = bonobo_widget_get_server (BONOBO_WIDGET (embedded)); if (!server) { bonobo_object_destroy (BONOBO_OBJECT (embedded)); return; } persist = (Bonobo_PersistStream) bonobo_object_client_query_interface ( server, "IDL:Bonobo/PersistStream:1.0", NULL); if (persist == CORBA_OBJECT_NIL) { bonobo_object_destroy (BONOBO_OBJECT (embedded)); return; } /* Write the data to a CamelStreamMem... */ ba = g_byte_array_new (); cstream = camel_stream_mem_new_with_byte_array (ba); camel_data_wrapper_write_to_stream (wrapper, cstream); /* ...convert the CamelStreamMem to a BonoboStreamMem... */ bstream = bonobo_stream_mem_create (ba->data, ba->len, TRUE, FALSE); camel_stream_close (cstream); /* ...and hydrate the PersistStream from the BonoboStream. */ CORBA_exception_init (&ev); Bonobo_PersistStream_load (persist, bonobo_object_corba_objref ( BONOBO_OBJECT (bstream)), &ev); bonobo_object_unref (BONOBO_OBJECT (bstream)); Bonobo_Unknown_unref (persist, &ev); CORBA_Object_release (persist, &ev); if (ev._major != CORBA_NO_EXCEPTION) { bonobo_object_unref (BONOBO_OBJECT (embedded)); CORBA_exception_free (&ev); return; } CORBA_exception_free (&ev); /* Embed the widget. */ gtk_widget_show (embedded); gtk_box_pack_start (box, embedded, FALSE, FALSE, 0); gtk_signal_connect (GTK_OBJECT (embedded), "destroy", embeddable_destroy_cb, NULL); } static char * get_data_wrapper_text (CamelDataWrapper *data) { CamelStream *memstream; GByteArray *ba; char *text; ba = g_byte_array_new (); memstream = camel_stream_mem_new_with_byte_array (ba); camel_data_wrapper_write_to_stream (data, memstream); text = g_malloc (ba->len + 1); memcpy (text, ba->data, ba->len); text[ba->len] = '\0'; camel_stream_close (memstream); return text; } static char * reply_body (CamelDataWrapper *data, gboolean *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 (strcasecmp (mime_type->type, "message") == 0) { *html = FALSE; return get_data_wrapper_text (data); } if (strcasecmp (mime_type->type, "text") == 0) { *html = !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 (strcasecmp (mime_type->type, "multipart") != 0) return NULL; mp = CAMEL_MULTIPART (data); if (strcasecmp (mime_type->subtype, "alternative") == 0) { /* Pick our favorite alternative and reply to it. */ subpart = find_preferred_alternative (mp); if (!subpart) return NULL; data = camel_medium_get_content_object ( CAMEL_MEDIUM (subpart)); return reply_body (data, 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_MIME_PART (camel_multipart_get_part (mp, i)); disp = camel_mime_part_get_disposition (subpart); if (disp && strcasecmp (disp, "inline") != 0) continue; data = camel_medium_get_content_object ( CAMEL_MEDIUM (subpart)); subtext = reply_body (data, html); if (!subtext) continue; if (*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 html; const char *repl_to, *message_id, *references; GList *to, *cc; contents = camel_medium_get_content_object (CAMEL_MEDIUM (message)); text = reply_body (contents, &html); composer = E_MSG_COMPOSER (e_msg_composer_new ()); /* Set the quoted reply text. */ if (text) { char *repl_text; if (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 = text_to_html (quoted_text, strlen (quoted_text), &len, TRUE, FALSE, FALSE); 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 GList *recip; recip = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_TO); cc = g_list_copy ((GList*)recip); recip = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_CC); while (recip) { cc = g_list_append (cc, recip->data); recip = recip->next; } } 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 (!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; } /* This is part of the temporary kludge below. */ #ifndef HAVE_MKSTEMP #include #include #endif EMsgComposer * mail_generate_forward (CamelMimeMessage *mime_message, gboolean forward_as_attachment, gboolean keep_attachments) { EMsgComposer *composer; char *tmpfile; int fd; CamelStream *stream; if (!forward_as_attachment) g_warning ("Forward as non-attachment not implemented."); if (!keep_attachments) g_warning ("Forwarding without attachments not implemented."); /* For now, we kludge by writing out a temp file. Later, * EMsgComposer will support attaching CamelMimeParts directly, * or something. FIXME. */ tmpfile = g_strdup ("/tmp/evolution-kludge-XXXX"); #ifdef HAVE_MKSTEMP fd = mkstemp (tmpfile); #else if (mktemp (tmpfile)) { fd = open (tmpfile, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR); } else fd = -1; #endif if (fd == -1) { g_warning ("Couldn't create temp file for forwarding"); g_free (tmpfile); return NULL; } stream = camel_stream_fs_new_with_fd (fd); camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (mime_message), stream); camel_stream_close (stream); composer = E_MSG_COMPOSER (e_msg_composer_new ()); e_msg_composer_attachment_bar_attach (E_MSG_COMPOSER_ATTACHMENT_BAR (composer->attachment_bar), tmpfile); g_free (tmpfile); /* FIXME: should we default a subject? */ return composer; }