static const char *
multipart_get_boundary (GMimeMultipart *multipart)
{
GMimeObject *object = (GMimeObject *) multipart;
const char *boundary;
if ((boundary = g_mime_object_get_content_type_parameter (object, "boundary")))
return boundary;
multipart_set_boundary (multipart, NULL);
return g_mime_object_get_content_type_parameter (object, "boundary");
}
int is_attachment(GMimeObject *part) {
if (g_mime_object_get_content_disposition_parameter(part, "filename") ||
g_mime_object_get_content_type_parameter(part, "name"))
return 1;
else
return 0;
}
static void
reply_part_content (GMimeObject *part)
{
GMimeContentType *content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
GMimeContentDisposition *disposition = g_mime_object_get_content_disposition (part);
if (g_mime_content_type_is_type (content_type, "multipart", "*") ||
g_mime_content_type_is_type (content_type, "message", "rfc822"))
{
/* Output nothing, since multipart subparts will be handled individually. */
}
else if (g_mime_content_type_is_type (content_type, "application", "pgp-encrypted") ||
g_mime_content_type_is_type (content_type, "application", "pgp-signature"))
{
/* Ignore PGP/MIME cruft parts */
}
else if (g_mime_content_type_is_type (content_type, "text", "*") &&
!g_mime_content_type_is_type (content_type, "text", "html"))
{
GMimeStream *stream_stdout = NULL, *stream_filter = NULL;
GMimeDataWrapper *wrapper;
const char *charset;
charset = g_mime_object_get_content_type_parameter (part, "charset");
stream_stdout = g_mime_stream_file_new (stdout);
if (stream_stdout) {
g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
stream_filter = g_mime_stream_filter_new(stream_stdout);
if (charset) {
g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
g_mime_filter_charset_new(charset, "UTF-8"));
}
}
g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
g_mime_filter_reply_new(TRUE));
wrapper = g_mime_part_get_content_object (GMIME_PART (part));
if (wrapper && stream_filter)
g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
if (stream_filter)
g_object_unref(stream_filter);
if (stream_stdout)
g_object_unref(stream_stdout);
}
else
{
if (disposition &&
strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
{
const char *filename = g_mime_part_get_filename (GMIME_PART (part));
printf ("Attachment: %s (%s)\n", filename,
g_mime_content_type_to_string (content_type));
}
else
{
printf ("Non-text part: %s\n",
g_mime_content_type_to_string (content_type));
}
}
}
/* Write a MIME text part out to the given stream.
*
* If (flags & NOTMUCH_SHOW_TEXT_PART_REPLY), this prepends "> " to
* each output line.
*
* Both line-ending conversion (CRLF->LF) and charset conversion ( ->
* UTF-8) will be performed, so it is inappropriate to call this
* function with a non-text part. Doing so will trigger an internal
* error.
*/
void
show_text_part_content (GMimeObject *part, GMimeStream *stream_out,
notmuch_show_text_part_flags flags)
{
GMimeContentType *content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
GMimeStream *stream_filter = NULL;
GMimeDataWrapper *wrapper;
const char *charset;
if (! g_mime_content_type_is_type (content_type, "text", "*"))
INTERNAL_ERROR ("Illegal request to format non-text part (%s) as text.",
g_mime_content_type_to_string (content_type));
if (stream_out == NULL)
return;
stream_filter = g_mime_stream_filter_new (stream_out);
g_mime_stream_filter_add(GMIME_STREAM_FILTER (stream_filter),
g_mime_filter_crlf_new (FALSE, FALSE));
charset = g_mime_object_get_content_type_parameter (part, "charset");
if (charset) {
GMimeFilter *charset_filter;
charset_filter = g_mime_filter_charset_new (charset, "UTF-8");
/* This result can be NULL for things like "unknown-8bit".
* Don't set a NULL filter as that makes GMime print
* annoying assertion-failure messages on stderr. */
if (charset_filter) {
g_mime_stream_filter_add (GMIME_STREAM_FILTER (stream_filter),
charset_filter);
g_object_unref (charset_filter);
}
}
if (flags & NOTMUCH_SHOW_TEXT_PART_REPLY) {
GMimeFilter *reply_filter;
reply_filter = g_mime_filter_reply_new (TRUE);
if (reply_filter) {
g_mime_stream_filter_add (GMIME_STREAM_FILTER (stream_filter),
reply_filter);
g_object_unref (reply_filter);
}
}
wrapper = g_mime_part_get_content_object (GMIME_PART (part));
if (wrapper && stream_filter)
g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
if (stream_filter)
g_object_unref(stream_filter);
}
/**
* g_mime_part_get_filename:
* @mime_part: a #GMimePart object
*
* Gets the filename of the specificed mime part, or %NULL if the
* @mime_part does not have the filename or name parameter set.
*
* Returns: the filename of the specified @mime_part or %NULL if
* neither of the parameters is set. If a file name is set, the
* returned string will be in UTF-8.
**/
const char *
g_mime_part_get_filename (GMimePart *mime_part)
{
GMimeObject *object = (GMimeObject *) mime_part;
const char *filename = NULL;
g_return_val_if_fail (GMIME_IS_PART (mime_part), NULL);
if ((filename = g_mime_object_get_content_disposition_parameter (object, "filename")))
return filename;
/* check the "name" param in the content-type */
return g_mime_object_get_content_type_parameter (object, "name");
}
static void
reply_part_content (GMimeObject *part)
{
GMimeContentType *content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
GMimeContentDisposition *disposition = g_mime_object_get_content_disposition (part);
if (g_mime_content_type_is_type (content_type, "text", "*") &&
!g_mime_content_type_is_type (content_type, "text", "html"))
{
GMimeStream *stream_stdout = NULL, *stream_filter = NULL;
GMimeDataWrapper *wrapper;
const char *charset;
charset = g_mime_object_get_content_type_parameter (part, "charset");
stream_stdout = g_mime_stream_file_new (stdout);
if (stream_stdout) {
g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
stream_filter = g_mime_stream_filter_new(stream_stdout);
if (charset) {
g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
g_mime_filter_charset_new(charset, "UTF-8"));
}
}
g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
g_mime_filter_reply_new(TRUE));
wrapper = g_mime_part_get_content_object (GMIME_PART (part));
if (wrapper && stream_filter)
g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
if (stream_filter)
g_object_unref(stream_filter);
if (stream_stdout)
g_object_unref(stream_stdout);
}
else
{
if (disposition &&
strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
{
const char *filename = g_mime_part_get_filename (GMIME_PART (part));
printf ("Attachment: %s (%s)\n", filename,
g_mime_content_type_to_string (content_type));
}
else
{
printf ("Non-text part: %s\n",
g_mime_content_type_to_string (content_type));
}
}
}
static void
format_omitted_part_meta_sprinter (sprinter_t *sp, GMimeObject *meta, GMimePart *part)
{
const char *content_charset = g_mime_object_get_content_type_parameter (meta, "charset");
const char *cte = g_mime_object_get_header (meta, "content-transfer-encoding");
GMimeDataWrapper *wrapper = g_mime_part_get_content_object (part);
GMimeStream *stream = g_mime_data_wrapper_get_stream (wrapper);
ssize_t content_length = g_mime_stream_length (stream);
if (content_charset != NULL) {
sp->map_key (sp, "content-charset");
sp->string (sp, content_charset);
}
if (cte != NULL) {
sp->map_key (sp, "content-transfer-encoding");
sp->string (sp, cte);
}
if (content_length >= 0) {
sp->map_key (sp, "content-length");
sp->integer (sp, content_length);
}
}
static ssize_t
multipart_write_to_stream (GMimeObject *object, GMimeStream *stream)
{
GMimeMultipart *multipart = (GMimeMultipart *) object;
ssize_t nwritten, total = 0;
const char *boundary;
GMimeObject *part;
guint i;
/* make sure a boundary is set unless we are writing out a raw
* header (in which case it should already be set... or if
* not, then it's a broken multipart and so we don't want to
* alter it or we'll completely break the output) */
boundary = g_mime_object_get_content_type_parameter (object, "boundary");
if (!boundary && !g_mime_header_list_get_stream (object->headers)) {
g_mime_multipart_set_boundary (multipart, NULL);
boundary = g_mime_object_get_content_type_parameter (object, "boundary");
}
/* write the content headers */
if ((nwritten = g_mime_header_list_write_to_stream (object->headers, stream)) == -1)
return -1;
total += nwritten;
/* write the preface */
if (multipart->preface) {
/* terminate the headers */
if (g_mime_stream_write (stream, "\n", 1) == -1)
return -1;
total++;
if ((nwritten = g_mime_stream_write_string (stream, multipart->preface)) == -1)
return -1;
total += nwritten;
}
for (i = 0; i < multipart->children->len; i++) {
part = multipart->children->pdata[i];
/* write the boundary */
if ((nwritten = g_mime_stream_printf (stream, "\n--%s\n", boundary)) == -1)
return -1;
total += nwritten;
/* write this part out */
if ((nwritten = g_mime_object_write_to_stream (part, stream)) == -1)
return -1;
total += nwritten;
}
/* write the end-boundary (but only if a boundary is set) */
if (boundary) {
if ((nwritten = g_mime_stream_printf (stream, "\n--%s--\n", boundary)) == -1)
return -1;
total += nwritten;
}
/* write the postface */
if (multipart->postface) {
if ((nwritten = g_mime_stream_write_string (stream, multipart->postface)) == -1)
return -1;
total += nwritten;
}
return total;
}
void
format_part_json (const void *ctx, mime_node_t *node, notmuch_bool_t first)
{
/* Any changes to the JSON format should be reflected in the file
* devel/schemata. */
if (node->envelope_file) {
printf ("{");
format_message_json (ctx, node->envelope_file);
printf ("\"headers\": ");
format_headers_json (ctx, GMIME_MESSAGE (node->part), FALSE);
printf (", \"body\": [");
format_part_json (ctx, mime_node_child (node, 0), first);
printf ("]}");
return;
}
void *local = talloc_new (ctx);
/* The disposition and content-type metadata are associated with
* the envelope for message parts */
GMimeObject *meta = node->envelope_part ?
GMIME_OBJECT (node->envelope_part) : node->part;
GMimeContentType *content_type = g_mime_object_get_content_type (meta);
const char *cid = g_mime_object_get_content_id (meta);
const char *filename = GMIME_IS_PART (node->part) ?
g_mime_part_get_filename (GMIME_PART (node->part)) : NULL;
const char *terminator = "";
int i;
if (!first)
printf (", ");
printf ("{\"id\": %d", node->part_num);
if (node->decrypt_attempted)
printf (", \"encstatus\": [{\"status\": \"%s\"}]",
node->decrypt_success ? "good" : "bad");
if (node->verify_attempted) {
printf (", \"sigstatus\": ");
format_part_sigstatus_json (node);
}
printf (", \"content-type\": %s",
json_quote_str (local, g_mime_content_type_to_string (content_type)));
if (cid)
printf (", \"content-id\": %s", json_quote_str (local, cid));
if (filename)
printf (", \"filename\": %s", json_quote_str (local, filename));
if (GMIME_IS_PART (node->part)) {
/* For non-HTML text parts, we include the content in the
* JSON. Since JSON must be Unicode, we handle charset
* decoding here and do not report a charset to the caller.
* For text/html parts, we do not include the content. If a
* caller is interested in text/html parts, it should retrieve
* them separately and they will not be decoded. Since this
* makes charset decoding the responsibility on the caller, we
* report the charset for text/html parts.
*/
if (g_mime_content_type_is_type (content_type, "text", "html")) {
const char *content_charset = g_mime_object_get_content_type_parameter (meta, "charset");
if (content_charset != NULL)
printf (", \"content-charset\": %s", json_quote_str (local, content_charset));
} else if (g_mime_content_type_is_type (content_type, "text", "*")) {
GMimeStream *stream_memory = g_mime_stream_mem_new ();
GByteArray *part_content;
show_text_part_content (node->part, stream_memory, 0);
part_content = g_mime_stream_mem_get_byte_array (GMIME_STREAM_MEM (stream_memory));
printf (", \"content\": %s", json_quote_chararray (local, (char *) part_content->data, part_content->len));
g_object_unref (stream_memory);
}
} else if (GMIME_IS_MULTIPART (node->part)) {
printf (", \"content\": [");
terminator = "]";
} else if (GMIME_IS_MESSAGE (node->part)) {
printf (", \"content\": [{");
printf ("\"headers\": ");
format_headers_json (local, GMIME_MESSAGE (node->part), FALSE);
printf (", \"body\": [");
terminator = "]}]";
}
talloc_free (local);
for (i = 0; i < node->nchildren; i++)
format_part_json (ctx, mime_node_child (node, i), i == 0);
printf ("%s}", terminator);
}
notmuch_status_t
_notmuch_message_crypto_potential_payload (_notmuch_message_crypto_t *msg_crypto, GMimeObject *payload, GMimeObject *parent, int childnum)
{
const char *protected_headers = NULL;
const char *forwarded = NULL;
const char *subject = NULL;
if (!msg_crypto || !payload)
return NOTMUCH_STATUS_NULL_POINTER;
/* only fire on the first payload part encountered */
if (msg_crypto->payload_encountered)
return NOTMUCH_STATUS_SUCCESS;
/* the first child of multipart/encrypted that matches the
* encryption protocol should be "control information" metadata,
* not payload. So we skip it. (see
* https://tools.ietf.org/html/rfc1847#page-8) */
if (parent && GMIME_IS_MULTIPART_ENCRYPTED (parent) && childnum == GMIME_MULTIPART_ENCRYPTED_VERSION) {
const char *enc_type = g_mime_object_get_content_type_parameter (parent, "protocol");
GMimeContentType *ct = g_mime_object_get_content_type (payload);
if (ct && enc_type) {
const char *part_type = g_mime_content_type_get_mime_type (ct);
if (part_type && strcmp (part_type, enc_type) == 0)
return NOTMUCH_STATUS_SUCCESS;
}
}
msg_crypto->payload_encountered = true;
/* don't bother recording anything if there is no cryptographic
* envelope: */
if ((msg_crypto->decryption_status != NOTMUCH_MESSAGE_DECRYPTED_FULL) &&
(msg_crypto->sig_list == NULL))
return NOTMUCH_STATUS_SUCCESS;
/* Verify that this payload has headers that are intended to be
* exported to the larger message: */
/* Consider a payload that uses Alexei Melinkov's forwarded="no" for
* message/global or message/rfc822:
* https://tools.ietf.org/html/draft-melnikov-smime-header-signing-05#section-4 */
forwarded = g_mime_object_get_content_type_parameter (payload, "forwarded");
if (GMIME_IS_MESSAGE_PART (payload) && forwarded && strcmp (forwarded, "no") == 0) {
GMimeMessage *message = g_mime_message_part_get_message (GMIME_MESSAGE_PART (payload));
subject = g_mime_message_get_subject (message);
/* FIXME: handle more than just Subject: at some point */
} else {
/* Consider "memoryhole"-style protected headers as practiced by Enigmail and K-9 */
protected_headers = g_mime_object_get_content_type_parameter (payload, "protected-headers");
if (protected_headers && strcasecmp("v1", protected_headers) == 0)
subject = g_mime_object_get_header (payload, "Subject");
/* FIXME: handle more than just Subject: at some point */
}
if (subject) {
if (msg_crypto->payload_subject)
talloc_free (msg_crypto->payload_subject);
msg_crypto->payload_subject = talloc_strdup (msg_crypto, subject);
}
return NOTMUCH_STATUS_SUCCESS;
}
void AnalyseMessageParse(GMimePart * mime_part)
{
int ichar=0,iencode =0;
if( NULL==mime_part )
{
printf("empty part\n");
return ;
}
GMimeContentEncoding ReEncoding = g_mime_part_get_content_encoding(mime_part);
char* szCharset = (char*)g_mime_object_get_content_type_parameter((GMimeObject*)mime_part,"charset");
printf("charset %s\n",szCharset);
{
char* szCharset = (char*)g_mime_object_get_content_type_parameter((GMimeObject*)mime_part,"name");
printf("name %s\n",szCharset);
GMimeContentType* pContentType = g_mime_object_get_content_type((GMimeObject*)mime_part) ;
printf("The content type is: (%s/%s)\n",pContentType->type,pContentType->subtype);
const char * ppp= g_mime_object_get_disposition((GMimeObject*)mime_part);
if(!ppp)
{
goto exits;
}
const char * qqq=g_mime_object_get_content_disposition_parameter((GMimeObject*)mime_part,"filename");
printf("get disposition\t%s\n%s\n",ppp,qqq);
if(qqq)
{
FILE * ps=fopen(qqq,"w+b");
printf("\n=======write to file================\n" );
GMimeStream *stream = g_mime_stream_file_new (ps);
GMimeDataWrapper * content=g_mime_part_get_content_object(mime_part);
g_mime_data_wrapper_write_to_stream(content,stream);
fclose(ps);
printf("finish writing\n");
getchar();
return ;
}
}
exits:{}
/*decode for text/plain or html*/
GMimeDataWrapper *dataWrap = g_mime_part_get_content_object(mime_part);
if(!dataWrap)
printf("error in dataWrap\n" );
GMimeStream * gmime_stream= g_mime_data_wrapper_get_stream(dataWrap);
//encoding转码
GMimeFilter * pAttFilter = g_mime_filter_basic_new(ReEncoding,FALSE);
GMimeStream* pFilterStream = g_mime_stream_filter_new(gmime_stream);
iencode = g_mime_stream_filter_add (GMIME_STREAM_FILTER (pFilterStream), pAttFilter);
/*create a filter convert the charset into local type*/
GMimeFilter * secondPtr = g_mime_filter_charset_new(szCharset,g_mime_charset_locale_name());
ichar = g_mime_stream_filter_add (GMIME_STREAM_FILTER (pFilterStream), secondPtr);
/*convert stream into stdout*/
GMimeStream *stream = g_mime_stream_file_new (stdout);
g_mime_stream_write_to_stream(pFilterStream,stream);
#if 0
/*get data from stream load into char* */
char pp[10000]= {0};
int tt=g_mime_stream_read(pFilterStream,pp,10000);
printf("%d\t%s\n",tt,pp);
#endif
g_object_unref ( pAttFilter );
g_object_unref ( secondPtr );
g_mime_stream_filter_remove((GMimeStreamFilter*)pFilterStream,ichar);
g_mime_stream_filter_remove((GMimeStreamFilter*)pFilterStream,iencode);
g_object_unref (pFilterStream);
//g_object_unref (gmime_stream);
//g_object_unref (stream);
//if(NULL==szCharset)
{
printf("\n====>>>>====>>>>====>>>>Finish decoding this part<<<<====<<<<====<<<<====\n");
getchar();
//return ;
}
return ;
}
static void collect_part(GMimeObject *part, PartCollectorData *fdata, gboolean multipart_parent) {
GMimeContentType *content_type = g_mime_object_get_content_type(part);
GMimeContentDisposition *disposition = g_mime_object_get_content_disposition(part);
if (!content_type)
return;
GMimeDataWrapper *wrapper = g_mime_part_get_content_object(GMIME_PART(part));
if (!wrapper)
return;
// All the information will be collected in the CollectedPart
CollectedPart *c_part = new_collected_part(fdata->part_id);
gboolean is_attachment = FALSE;
if (disposition) {
c_part->disposition = g_ascii_strdown(disposition->disposition, -1);
is_attachment = !g_ascii_strcasecmp(disposition->disposition, GMIME_DISPOSITION_ATTACHMENT);
}
// If a filename is given, collect it always
const gchar *filename = g_mime_part_get_filename(GMIME_PART(part));
if (filename)
c_part->filename = g_strdup(filename);
// If a contentID is given, collect it always
const char* content_id = g_mime_part_get_content_id (GMIME_PART(part));
if (content_id)
c_part->content_id = g_strdup(content_id);
// Get the contentType in lowercase
gchar *content_type_str = g_mime_content_type_to_string(content_type);
c_part->content_type = g_ascii_strdown(content_type_str, -1);
g_free(content_type_str);
// To qualify as a message body, a MIME entity MUST NOT have a Content-Disposition header with the value "attachment".
if (!is_attachment && g_mime_content_type_is_type(content_type, "text", "*")) {
gboolean is_text_plain = g_mime_content_type_is_type(content_type, "text", "plain");
gboolean is_text_html = g_mime_content_type_is_type(content_type, "text", "html");
gboolean is_text_rtf = g_mime_content_type_is_type(content_type, "text", "rtf");
gboolean is_text_enriched = g_mime_content_type_is_type(content_type, "text", "enriched");
gboolean is_new_text = !fdata->text_part && is_text_plain;
gboolean is_new_html = !fdata->html_part && (is_text_html || is_text_enriched || is_text_rtf);
GMimeStream *mem_stream = g_mime_stream_mem_new();
g_mime_stream_mem_set_owner(GMIME_STREAM_MEM(mem_stream), FALSE);
GMimeStream *filtered_mem_stream = g_mime_stream_filter_new(mem_stream);
const gchar *charset = g_mime_object_get_content_type_parameter(part, "charset");
if (charset && g_ascii_strcasecmp(charset, UTF8_CHARSET)) {
GMimeFilter *utf8_charset_filter = g_mime_filter_charset_new(charset, UTF8_CHARSET);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), utf8_charset_filter);
g_object_unref(utf8_charset_filter);
}
if (!fdata->raw && is_new_text) {
GMimeFilter *strip_filter = g_mime_filter_strip_new();
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), strip_filter);
g_object_unref(strip_filter);
GMimeFilter *crlf_filter = g_mime_filter_crlf_new(FALSE, FALSE);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), crlf_filter);
g_object_unref(crlf_filter);
GMimeFilter *html_filter = g_mime_filter_html_new(
GMIME_FILTER_HTML_CONVERT_NL |
GMIME_FILTER_HTML_CONVERT_SPACES |
GMIME_FILTER_HTML_CONVERT_URLS |
GMIME_FILTER_HTML_MARK_CITATION |
GMIME_FILTER_HTML_CONVERT_ADDRESSES |
GMIME_FILTER_HTML_CITE, CITATION_COLOUR);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), html_filter);
g_object_unref(html_filter);
}
if (!fdata->raw && (is_new_text || is_new_html)) {
GMimeFilter *from_filter = g_mime_filter_from_new(GMIME_FILTER_FROM_MODE_ESCAPE);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), from_filter);
g_object_unref(from_filter);
}
// Add Enriched/RTF filter for this content
if (!fdata->raw && (is_new_html && (is_text_enriched || is_text_rtf))) {
guint flags = 0;
if (is_text_rtf)
flags = GMIME_FILTER_ENRICHED_IS_RICHTEXT;
GMimeFilter *enriched_filter = g_mime_filter_enriched_new(flags);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_mem_stream), enriched_filter);
g_object_unref(enriched_filter);
}
g_mime_data_wrapper_write_to_stream(wrapper, filtered_mem_stream);
// Very important! Flush the the stream and get all content through.
g_mime_stream_flush(filtered_mem_stream);
// Freed by the mem_stream on its own (owner) [transfer none]
c_part->content = g_mime_stream_mem_get_byte_array(GMIME_STREAM_MEM(mem_stream));
// After we unref the mem_stream, part_content is NOT available anymore
g_object_unref(filtered_mem_stream);
g_object_unref(mem_stream);
// Without content, the collected body part is of no use, so we ignore it.
if (c_part->content->len == 0) {
free_collected_part(c_part);
return;
}
// We accept only the first text and first html content, everything
// else is considered an alternative body
if (is_new_text) {
fdata->text_part = c_part;
} else if (is_new_html) {
fdata->html_part = c_part;
} else {
g_ptr_array_add(fdata->alternative_bodies, c_part);
}
} else {
GMimeStream *attachment_mem_stream = g_mime_stream_mem_new();
g_mime_stream_mem_set_owner (GMIME_STREAM_MEM(attachment_mem_stream), FALSE);
g_mime_data_wrapper_write_to_stream(wrapper, attachment_mem_stream);
g_mime_stream_flush(attachment_mem_stream);
c_part->content = g_mime_stream_mem_get_byte_array(GMIME_STREAM_MEM(attachment_mem_stream));
g_object_unref(attachment_mem_stream);
// Some content may not have disposition defined so we need to determine better what it is
if ((disposition && !g_ascii_strcasecmp(disposition->disposition, GMIME_DISPOSITION_INLINE)) ||
g_mime_part_get_content_id(GMIME_PART(part))) {
g_ptr_array_add(fdata->inlines, c_part);
} else {
// All other disposition should be kept within attachments
g_ptr_array_add(fdata->attachments, c_part);
}
}
}
GMimeObject *
g_mime_gpgme_mpe_decrypt(GMimeMultipartEncrypted * mpe,
GMimeGpgmeSigstat ** signature,
GtkWindow * parent, GError ** err)
{
GMimeObject *decrypted, *version, *encrypted;
GMimeStream *stream, *ciphertext;
GMimeStream *filtered_stream;
GMimeContentType *mime_type;
GMimeGpgmeSigstat *sigstat;
GMimeDataWrapper *wrapper;
GMimeFilter *crlf_filter;
GMimeParser *parser;
const char *protocol;
char *content_type;
g_return_val_if_fail(GMIME_IS_MULTIPART_ENCRYPTED(mpe), NULL);
if (signature && *signature) {
g_object_unref(G_OBJECT(*signature));
*signature = NULL;
}
protocol =
g_mime_object_get_content_type_parameter(GMIME_OBJECT(mpe),
"protocol");
/* make sure the protocol is present and matches the cipher encrypt protocol */
if (!protocol
|| g_ascii_strcasecmp("application/pgp-encrypted",
protocol) != 0) {
g_set_error(err, GMIME_ERROR, GMIME_ERROR_PROTOCOL_ERROR,
_
("Cannot decrypt multipart/encrypted part: unsupported encryption protocol “%s”."),
protocol ? protocol : _("(none)"));
return NULL;
}
version =
g_mime_multipart_get_part(GMIME_MULTIPART(mpe),
GMIME_MULTIPART_ENCRYPTED_VERSION);
/* make sure the protocol matches the version part's content-type */
content_type = g_mime_content_type_to_string(version->content_type);
if (g_ascii_strcasecmp(content_type, protocol) != 0) {
g_set_error(err, GMIME_ERROR, GMIME_ERROR_PROTOCOL_ERROR, "%s",
_
("Cannot decrypt multipart/encrypted part: content-type does not match protocol."));
g_free(content_type);
return NULL;
}
g_free(content_type);
/* get the encrypted part and check that it is of type application/octet-stream */
encrypted =
g_mime_multipart_get_part(GMIME_MULTIPART(mpe),
GMIME_MULTIPART_ENCRYPTED_CONTENT);
mime_type = g_mime_object_get_content_type(encrypted);
if (!g_mime_content_type_is_type
(mime_type, "application", "octet-stream")) {
g_set_error(err, GMIME_ERROR, GMIME_ERROR_PROTOCOL_ERROR, "%s",
_
("Cannot decrypt multipart/encrypted part: unexpected content type"));
return NULL;
}
/* get the ciphertext stream */
wrapper = g_mime_part_get_content_object(GMIME_PART(encrypted));
ciphertext = g_mime_data_wrapper_get_decoded_stream(wrapper);
g_mime_stream_reset(ciphertext);
stream = g_mime_stream_mem_new();
filtered_stream = g_mime_stream_filter_new(stream);
crlf_filter = g_mime_filter_crlf_new(FALSE, FALSE);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_stream),
crlf_filter);
g_object_unref(crlf_filter);
/* get the cleartext */
sigstat =
libbalsa_gpgme_decrypt(ciphertext, filtered_stream,
GPGME_PROTOCOL_OpenPGP, parent, err);
if (!sigstat) {
g_object_unref(filtered_stream);
g_object_unref(ciphertext);
g_object_unref(stream);
return NULL;
}
g_mime_stream_flush(filtered_stream);
g_object_unref(filtered_stream);
g_object_unref(ciphertext);
g_mime_stream_reset(stream);
parser = g_mime_parser_new();
g_mime_parser_init_with_stream(parser, stream);
g_object_unref(stream);
decrypted = g_mime_parser_construct_part(parser);
g_object_unref(parser);
if (!decrypted) {
g_set_error(err, GMIME_ERROR, GMIME_ERROR_PARSE_ERROR, "%s",
_
("Cannot decrypt multipart/encrypted part: failed to parse decrypted content"));
g_object_unref(G_OBJECT(sigstat));
return NULL;
}
/* cache the decrypted part */
if (signature) {
if (sigstat->status != GPG_ERR_NOT_SIGNED)
*signature = sigstat;
else
g_object_unref(G_OBJECT(sigstat));
}
return decrypted;
}
GMimeGpgmeSigstat *
g_mime_gpgme_mps_verify(GMimeMultipartSigned * mps, GError ** error)
{
const gchar *protocol;
gpgme_protocol_t crypto_prot;
gchar *content_type;
GMimeObject *content;
GMimeObject *signature;
GMimeStream *stream;
GMimeStream *filtered_stream;
GMimeFilter *crlf_filter;
GMimeDataWrapper *wrapper;
GMimeStream *sigstream;
GMimeGpgmeSigstat *result;
g_return_val_if_fail(GMIME_IS_MULTIPART_SIGNED(mps), NULL);
if (g_mime_multipart_get_count(GMIME_MULTIPART(mps)) < 2) {
g_set_error(error, GMIME_ERROR, GMIME_ERROR_PARSE_ERROR, "%s",
_
("Cannot verify multipart/signed part due to missing subparts."));
return NULL;
}
/* grab the protocol so we can configure the GpgME context */
protocol =
g_mime_object_get_content_type_parameter(GMIME_OBJECT(mps),
"protocol");
if (protocol) {
if (g_ascii_strcasecmp("application/pgp-signature", protocol) == 0)
crypto_prot = GPGME_PROTOCOL_OpenPGP;
else if (g_ascii_strcasecmp
("application/pkcs7-signature", protocol) == 0
|| g_ascii_strcasecmp("application/x-pkcs7-signature",
protocol) == 0)
crypto_prot = GPGME_PROTOCOL_CMS;
else
crypto_prot = GPGME_PROTOCOL_UNKNOWN;
} else
crypto_prot = GPGME_PROTOCOL_UNKNOWN;
/* eject on unknown protocols */
if (crypto_prot == GPGME_PROTOCOL_UNKNOWN) {
g_set_error(error, GPGME_ERROR_QUARK, GPG_ERR_INV_VALUE,
_("unsupported protocol “%s”"), protocol);
return NULL;
}
signature =
g_mime_multipart_get_part(GMIME_MULTIPART(mps),
GMIME_MULTIPART_SIGNED_SIGNATURE);
/* make sure the protocol matches the signature content-type */
content_type = g_mime_content_type_to_string(signature->content_type);
if (g_ascii_strcasecmp(content_type, protocol) != 0) {
g_set_error(error, GMIME_ERROR, GMIME_ERROR_PARSE_ERROR, "%s",
_
("Cannot verify multipart/signed part: signature content-type does not match protocol."));
g_free(content_type);
return NULL;
}
g_free(content_type);
content =
g_mime_multipart_get_part(GMIME_MULTIPART(mps),
GMIME_MULTIPART_SIGNED_CONTENT);
/* get the content stream */
stream = g_mime_stream_mem_new();
filtered_stream = g_mime_stream_filter_new(stream);
/* Note: see rfc2015 or rfc3156, section 5.1 */
crlf_filter = g_mime_filter_crlf_new(TRUE, FALSE);
g_mime_stream_filter_add(GMIME_STREAM_FILTER(filtered_stream),
crlf_filter);
g_object_unref(crlf_filter);
g_mime_object_write_to_stream(content, filtered_stream);
g_mime_stream_flush(filtered_stream);
g_object_unref(filtered_stream);
g_mime_stream_reset(stream);
/* get the signature stream */
wrapper = g_mime_part_get_content_object(GMIME_PART(signature));
/* a s/mime signature is always encoded, a pgp signature shouldn't,
* but there exist implementations which encode it... */
sigstream = g_mime_stream_mem_new();
g_mime_data_wrapper_write_to_stream(wrapper, sigstream);
g_mime_stream_reset(sigstream);
/* verify the signature */
result =
libbalsa_gpgme_verify(stream, sigstream, crypto_prot, FALSE,
error);
g_object_unref(stream);
g_object_unref(sigstream);
return result;
}
