#include "notmuch-client.h"
#include "gmime-filter-reply.h"
+#include "gmime-filter-headers.h"
static void
reply_part_content (GMimeObject *part)
g_object_unref(stream_stdout);
}
+static void
+show_reply_headers (GMimeMessage *message)
+{
+ GMimeStream *stream_stdout = NULL, *stream_filter = NULL;
+
+ 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 (stream_filter) {
+ g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
+ g_mime_filter_headers_new());
+ g_mime_object_write_to_stream(GMIME_OBJECT(message), stream_filter);
+ g_object_unref(stream_filter);
+ }
+ g_object_unref(stream_stdout);
+ }
+}
+
static void
reply_part (GMimeObject *part, int *part_count)
{
{
InternetAddressList *list;
+ if (recipients == NULL)
+ return NULL;
+
list = internet_address_list_parse_string (recipients);
if (list == NULL)
return NULL;
static int
reply_to_header_is_redundant (notmuch_message_t *message)
{
- const char *header, *addr;
+ const char *reply_to, *to, *cc, *addr;
InternetAddressList *list;
InternetAddress *address;
InternetAddressMailbox *mailbox;
- header = notmuch_message_get_header (message, "reply-to");
- if (*header == '\0')
+ reply_to = notmuch_message_get_header (message, "reply-to");
+ if (reply_to == NULL || *reply_to == '\0')
return 0;
- list = internet_address_list_parse_string (header);
+ list = internet_address_list_parse_string (reply_to);
if (internet_address_list_length (list) != 1)
return 0;
mailbox = INTERNET_ADDRESS_MAILBOX (address);
addr = internet_address_mailbox_get_addr (mailbox);
- if (strstr (notmuch_message_get_header (message, "to"), addr) != 0 ||
- strstr (notmuch_message_get_header (message, "cc"), addr) != 0)
+ to = notmuch_message_get_header (message, "to");
+ cc = notmuch_message_get_header (message, "cc");
+
+ if ((to && strstr (to, addr) != 0) ||
+ (cc && strstr (cc, addr) != 0))
{
return 1;
}
static const char *
guess_from_received_header (notmuch_config_t *config, notmuch_message_t *message)
{
- const char *received,*primary;
- char **other;
- char *by,*mta,*ptr,*token;
+ const char *received,*primary,*by;
+ char **other,*tohdr;
+ char *mta,*ptr,*token;
char *domain=NULL;
char *tld=NULL;
const char *delim=". \t";
size_t i,other_len;
+ const char *to_headers[] = {"Envelope-to", "X-Original-To"};
+
+ primary = notmuch_config_get_user_primary_email (config);
+ other = notmuch_config_get_user_other_email (config, &other_len);
+
+ /* sadly, there is no standard way to find out to which email
+ * address a mail was delivered - what is in the headers depends
+ * on the MTAs used along the way. So we are trying a number of
+ * heuristics which hopefully will answer this question.
+
+ * We only got here if none of the users email addresses are in
+ * the To: or Cc: header. From here we try the following in order:
+ * 1) check for an Envelope-to: header
+ * 2) check for an X-Original-To: header
+ * 3) check for a (for <email@add.res>) clause in Received: headers
+ * 4) check for the domain part of known email addresses in the
+ * 'by' part of Received headers
+ * If none of these work, we give up and return NULL
+ */
+ for (i = 0; i < sizeof(to_headers)/sizeof(*to_headers); i++) {
+ tohdr = xstrdup(notmuch_message_get_header (message, to_headers[i]));
+ if (tohdr && *tohdr) {
+ /* tohdr is potentialy a list of email addresses, so here we
+ * check if one of the email addresses is a substring of tohdr
+ */
+ if (strcasestr(tohdr, primary)) {
+ free(tohdr);
+ return primary;
+ }
+ for (i = 0; i < other_len; i++)
+ if (strcasestr (tohdr, other[i])) {
+ free(tohdr);
+ return other[i];
+ }
+ free(tohdr);
+ }
+ }
+
+ /* We get the concatenated Received: headers and search from the
+ * front (last Received: header added) and try to extract from
+ * them indications to which email address this message was
+ * delivered.
+ * The Received: header is special in our get_header function
+ * and is always concated.
+ */
received = notmuch_message_get_header (message, "received");
- by = strstr (received, " by ");
- if (by && *(by+4)) {
- /* we know that there are 4 characters after by - either the 4th one
- * is '\0' (broken header) or it is the first letter of the hostname
- * that last received this email - which we'll use to guess the right
- * from email address
- */
- mta = strdup (by+4);
- if (mta == NULL)
- return NULL;
+ if (received == NULL)
+ return NULL;
- /* After the MTA comes its IP address (or HELO response) in parenthesis.
- * so let's terminate the string there
+ /* First we look for a " for <email@add.res>" in the received
+ * header
+ */
+ ptr = strstr (received, " for ");
+ if (ptr) {
+ /* the text following is potentialy a list of email addresses,
+ * so again we check if one of the email addresses is a
+ * substring of ptr
*/
- if ((ptr = strchr (mta, '(')) == NULL) {
- free (mta);
- return NULL;
+ if (strcasestr(ptr, primary)) {
+ return primary;
}
- *ptr = '\0';
-
+ for (i = 0; i < other_len; i++)
+ if (strcasestr (ptr, other[i])) {
+ return other[i];
+ }
+ }
+ /* Finally, we parse all the " by MTA ..." headers to guess the
+ * email address that this was originally delivered to.
+ * We extract just the MTA here by removing leading whitespace and
+ * assuming that the MTA name ends at the next whitespace.
+ * We test for *(by+4) to be non-'\0' to make sure there's
+ * something there at all - and then assume that the first
+ * whitespace delimited token that follows is the receiving
+ * system in this step of the receive chain
+ */
+ by = received;
+ while((by = strstr (by, " by ")) != NULL) {
+ by += 4;
+ if (*by == '\0')
+ break;
+ mta = xstrdup (by);
+ token = strtok(mta," \t");
+ if (token == NULL)
+ break;
/* Now extract the last two components of the MTA host name
- * as domain and tld
+ * as domain and tld.
*/
- token = mta;
while ((ptr = strsep (&token, delim)) != NULL) {
if (*ptr == '\0')
continue;
}
if (domain) {
- /* recombine domain and tld and look for it among the configured
- * email addresses
+ /* Recombine domain and tld and look for it among the configured
+ * email addresses.
+ * This time we have a known domain name and nothing else - so
+ * the test is the other way around: we check if this is a
+ * substring of one of the email addresses.
*/
*(tld-1) = '.';
- primary = notmuch_config_get_user_primary_email (config);
- if (strcasestr (primary, domain)) {
- free (mta);
- return primary;
+
+ if (strcasestr(primary, domain)) {
+ free(mta);
+ return primary;
+ }
+ for (i = 0; i < other_len; i++)
+ if (strcasestr (other[i],domain)) {
+ free(mta);
+ return other[i];
}
- other = notmuch_config_get_user_other_email (config, &other_len);
- for (i = 0; i < other_len; i++)
- if (strcasestr (other[i], domain)) {
- free (mta);
- return other[i];
- }
}
-
free (mta);
}
notmuch_message_t *message;
const char *subject, *from_addr = NULL;
const char *in_reply_to, *orig_references, *references;
- char *reply_headers;
for (messages = notmuch_query_search_messages (query);
notmuch_messages_valid (messages);
}
subject = notmuch_message_get_header (message, "subject");
-
- if (strncasecmp (subject, "Re:", 3))
- subject = talloc_asprintf (ctx, "Re: %s", subject);
- g_mime_message_set_subject (reply, subject);
+ if (subject) {
+ if (strncasecmp (subject, "Re:", 3))
+ subject = talloc_asprintf (ctx, "Re: %s", subject);
+ g_mime_message_set_subject (reply, subject);
+ }
from_addr = add_recipients_from_message (reply, config, message);
- if (from_addr == NULL) {
+ if (from_addr == NULL)
from_addr = guess_from_received_header (config, message);
- if (from_addr == NULL) {
- from_addr = notmuch_config_get_user_primary_email (config);
- }
- }
+
+ if (from_addr == NULL)
+ from_addr = notmuch_config_get_user_primary_email (config);
from_addr = talloc_asprintf (ctx, "%s <%s>",
notmuch_config_get_user_name (config),
g_mime_object_set_header (GMIME_OBJECT (reply),
"References", references);
- reply_headers = g_mime_object_to_string (GMIME_OBJECT (reply));
- printf ("%s", reply_headers);
- free (reply_headers);
+ show_reply_headers (reply);
g_object_unref (G_OBJECT (reply));
reply = NULL;