callisto-debian/evolution
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
b2ae704032d1bd7b090b99a05be8a514b7ef1ea6
evolution/mail/mail-format.c
Dan Winship b2ae704032 update for CamelStream changes. 
* mail-format.c: update for CamelStream changes.

svn path=/trunk/; revision=2631
2000-04-26 14:40:43 +00:00

1468 lines
39 KiB
C
Raw Blame History

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Author :
* Matt Loper <matt@helixcode.com>
*
* 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 <config.h>
#include "mail-format.h"
#include "mail-display.h"
#include "camel/hash-table-utils.h"
#include <libgnome/libgnome.h>
#include <bonobo.h>
#include <libgnorba/gnorba.h>
#include <bonobo/bonobo-stream-memory.h>
#include <ctype.h> /* for isprint */
#include <string.h> /* for strstr */
#include <fcntl.h>
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 '&lt;', and '"' turns into '&quot;' */
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, "<PRE>\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, "&lt;");
out += 4;
break;
case '>':
strcpy (out, "&gt;");
out += 4;
break;
case '&':
strcpy (out, "&amp;");
out += 5;
break;
case '"':
strcpy (out, "&quot;");
out += 6;
break;
case '\n':
*out++ = *cur;
if (convert_newlines_to_br) {
strcpy (out, "<br>");
out += 4;
}
break;
case ' ':
if (convert_space_hack) {
if (cur == input ||
(len > 0 && *(cur + 1) == ' ')) {
strcpy (out, "&nbsp;");
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, "</PRE>");
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,
"<tr valign=top><%s align=right>%s</%s>"
"<td>%s</td></tr>", 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,
"<BODY TEXT=\"#000000\" BGCOLOR=\"#EEEEEE\">\n");
mail_html_write (html, stream, "<table>");
/* 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, "</table>");
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<!-- text/plain -->\n<pre>\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 '&lt;', 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, "<b>(empty)</b>");
mail_html_write (html, stream, "</pre>\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<!-- text/plain, flowed -->\n<tt>\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 ? "<i>\n" : "");
while (quoting > prevquoting) {
mail_html_write (html, stream, "<blockquote>");
prevquoting++;
}
while (quoting < prevquoting) {
mail_html_write (html, stream,
"</blockquote>");
prevquoting--;
}
mail_html_write (html, stream, "%s\n",
prevquoting == 0 ? "</i>\n" : "");
} else if (br_pending) {
mail_html_write (html, stream, "<br>\n");
br_pending = FALSE;
}
if (*p == ' ')
p++;
len = strlen (p);
/* replace '<' with '&lt;', 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, "</tt>\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", "<b>");
g_hash_table_insert (translations, "/bold", "</b>");
g_hash_table_insert (translations, "italic", "<i>");
g_hash_table_insert (translations, "/italic", "</i>");
g_hash_table_insert (translations, "fixed", "<tt>");
g_hash_table_insert (translations, "/fixed", "</tt>");
g_hash_table_insert (translations, "smaller", "<font size=-1>");
g_hash_table_insert (translations, "/smaller", "</font>");
g_hash_table_insert (translations, "bigger", "<font size=+1>");
g_hash_table_insert (translations, "/bigger", "</font>");
g_hash_table_insert (translations, "underline", "<u>");
g_hash_table_insert (translations, "/underline", "</u>");
g_hash_table_insert (translations, "center", "<p align=center>");
g_hash_table_insert (translations, "/center", "</p>");
g_hash_table_insert (translations, "flushleft", "<p align=left>");
g_hash_table_insert (translations, "/flushleft", "</p>");
g_hash_table_insert (translations, "flushright", "<p align=right>");
g_hash_table_insert (translations, "/flushright", "</p>");
g_hash_table_insert (translations, "excerpt", "<blockquote>");
g_hash_table_insert (translations, "/excerpt", "</blockquote>");
g_hash_table_insert (translations, "paragraph", "<p>");
g_hash_table_insert (translations, "signature", "<address>");
g_hash_table_insert (translations, "/signature", "</address>");
g_hash_table_insert (translations, "comment", "<!-- ");
g_hash_table_insert (translations, "/comment", " -->");
g_hash_table_insert (translations, "param", "<!-- ");
g_hash_table_insert (translations, "/param", " -->");
g_hash_table_insert (translations, "nl", "<br>");
g_hash_table_insert (translations, "np", "<hr>");
}
mail_html_new (&html, &stream, root, TRUE);
mail_html_write (html, stream, "\n<!-- text/enriched -->\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, "&nbsp;");
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, "<br>");
p++;
}
}
break;
case '>':
mail_html_write (html, stream, "&gt;");
break;
case '&':
mail_html_write (html, stream, "&amp;");
break;
case '<':
if (*p == '<') {
mail_html_write (html, stream, "&lt;");
break;
}
if (strncmp (p, "lt>", 3) == 0)
mail_html_write (html, stream, "&lt;");
else if (strncmp (p, "nofill>", 7) == 0) {
nofill++;
mail_html_write (html, stream, "<pre>");
} else if (strncmp (p, "/nofill>", 8) == 0) {
nofill--;
mail_html_write (html, stream, "</pre>");
} else {
char *copy, *match;
len = strcspn (p, ">");
copy = g_strndup (p, len);
match = g_hash_table_lookup (translations,
copy);
g_free (copy);
if (match)
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<!-- text/html -->\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, "<b>(empty)</b>");
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, "<img src=\"cid:%s\">", 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, "<table><tr><td><a href=\"camel:%p\">"
"<img src=\"camel:%p\"></a></td>"
"<td>%s<br><br>Click on the icon to %s."
"</td></tr></table>", 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 ("<blockquote><i>\n%s\n"
"</i></blockquote>\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 <fcntl.h>
#include <sys/stat.h>
#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;
}
Reference in New Issue View Git Blame Copy Permalink