topal-patch-1 applied

6 files changed, 116 insertions, 19 deletions

diff --git a/alpine/send.c b/alpine/send.c
index bc70dadf..823080c9 100644
--- a/alpine/send.c
+++ b/alpine/send.c
@@ -4115,6 +4115,23 @@ pine_send(ENVELOPE *outgoing, struct mail_bodystruct **body,
     pbf = save_previous_pbuf;
     g_rolenick = NULL;
 
+    /* Topal: Unmangle the body types. */
+    if ((*body)->type == TYPEMULTIPART 
+	&& (*body)->topal_hack == 1) {
+      /* This was a single part message which Topal mangled. */
+      dprint((9, "Topal: unmangling single part message\n"));
+      (*body)->type = TYPETEXT;
+    }
+    if ((*body)->type == TYPEMULTIPART
+	&& (*body)->topal_hack != 1
+	&& (*body)->nested.part->body.type == TYPEMULTIPART
+	&& (*body)->nested.part->body.topal_hack == 1) {
+      /* Topal mangled a multipart message.  So the first nested part
+	 is really TYPETEXT. */
+      dprint((9, "Topal: unmangling first part of multipart message\n"));
+      (*body)->nested.part->body.type = TYPETEXT;
+    }
+
     dprint((4, "=== send returning ===\n"));
 }
 
@@ -5451,22 +5468,50 @@ filter_message_text(char *fcmd, ENVELOPE *outgoing, struct mail_bodystruct *body
 
 				rfc822_parse_content_header(nb,
 				    (char *) ucase((unsigned char *) buf+8),s);
+				/* Topal: We're working on the first
+				   text segment of the message.  If
+				   the filter returns something that
+				   isn't TYPETEXT, then we need to
+				   pretend (later on) that this is in
+				   fact a TYPETEXT, because Topal has
+				   already encoded it....
+
+				   Original code path first, then an
+				   alternate path.
+				*/
 				if(nb->type == TYPETEXT
 				   && nb->subtype
 				   && (!b->subtype 
 				       || strucmp(b->subtype, nb->subtype))){
-				    if(b->subtype)
-				      fs_give((void **) &b->subtype);
-
+				  if(b->subtype)
+				    fs_give((void **) &b->subtype);
+				  
+				  b->subtype  = nb->subtype;
+				  nb->subtype = NULL;
+				  
+				  mail_free_body_parameter(&b->parameter);
+				  b->parameter = nb->parameter;
+				  nb->parameter = NULL;
+				  mail_free_body_parameter(&nb->parameter);
+				} 
+				else if(F_ON(F_ENABLE_TOPAL_HACK, ps_global)){
+				  /* Perhaps the type isn't TYPETEXT,
+				     and the hack is requested.  So,
+				     let's mess with the types. */
+				  if(nb->type != TYPETEXT){
+				    b->type     = nb->type;
 				    b->subtype  = nb->subtype;
 				    nb->subtype = NULL;
-				      
+				    
+				    dprint((9, "Topal: mangling body!\n"));
 				    mail_free_body_parameter(&b->parameter);
 				    b->parameter = nb->parameter;
 				    nb->parameter = NULL;
 				    mail_free_body_parameter(&nb->parameter);
+				    b->topal_hack = 1;
+				  }
 				}
-
+				/* Topal: end */
 				mail_free_body(&nb);
 			    }
 
diff --git a/imap/src/c-client/mail.h b/imap/src/c-client/mail.h
index 79f0b3f3..c89d1638 100644
--- a/imap/src/c-client/mail.h
+++ b/imap/src/c-client/mail.h
@@ -844,6 +844,7 @@ BODY {
     unsigned long bytes;	/* size of text in octets */
   } size;
   char *md5;			/* MD5 checksum */
+  unsigned short topal_hack;    /* set to 1 if topal has wrecked the sending */
   void *sparep;			/* spare pointer reserved for main program */
 };
 
diff --git a/pith/conf.c b/pith/conf.c
index e4f64c71..21afdf4e 100644
--- a/pith/conf.c
+++ b/pith/conf.c
@@ -2992,6 +2992,8 @@ feature_list(int index)
 	 F_SEND_WO_CONFIRM, h_config_send_wo_confirm, PREF_SEND, 0},
 	{"strip-whitespace-before-send", "Strip Whitespace Before Sending",
 	 F_STRIP_WS_BEFORE_SEND, h_config_strip_ws_before_send, PREF_SEND, 0},
+ 	{"enable-topal-hack", "Enable Topal hack for OpenPGP/MIME messages",
+ 	 F_ENABLE_TOPAL_HACK, h_config_enable_topal_hack, PREF_HIDDEN, 0},
 	{"warn-if-blank-fcc", "Warn if Blank Fcc",
 	 F_WARN_ABOUT_NO_FCC, h_config_warn_if_fcc_blank, PREF_SEND, 0},
 	{"warn-if-blank-subject", "Warn if Blank Subject",
diff --git a/pith/conftype.h b/pith/conftype.h
index 3ed5040f..5f695f51 100644
--- a/pith/conftype.h
+++ b/pith/conftype.h
@@ -532,6 +532,7 @@ typedef enum {
 	F_MARK_FCC_SEEN,
 	F_MULNEWSRC_HOSTNAMES_AS_TYPED,
 	F_STRIP_WS_BEFORE_SEND,
+	F_ENABLE_TOPAL_HACK,
 	F_QUELL_FLOWED_TEXT,
 	F_COMPOSE_ALWAYS_DOWNGRADE,
 	F_SORT_DEFAULT_FCC_ALPHA,
diff --git a/pith/pine.hlp b/pith/pine.hlp
index 26e5e269..b42db18a 100644
--- a/pith/pine.hlp
+++ b/pith/pine.hlp
@@ -4786,7 +4786,8 @@ There are also additional details on
 <li><a href="h_config_always_spell_check">FEATURE: <!--#echo var="FEAT_spell-check-before-sending"--></a>
 <li><a href="h_config_winpos_in_config">FEATURE: <!--#echo var="FEAT_store-window-position-in-config"--></a>
 <li><a href="h_config_strip_sigdashes">FEATURE: <!--#echo var="FEAT_strip-from-sigdashes-on-reply"--></a>
-<li><a href="h_config_strip_ws_before_send">FEATURE: <!--#echo var="FEAT_strip-whitespace-before-send"--></a>
+<li><a href="h_config_strip_ws_before_send">FEATURE: <!--#echo var="FEAT_strip-whitespace-before-send"--></a> 
+<li><a href="h_config_enable_topal_hack">FEATURE: <!--#echo var="FEAT_enable-topal-hack"--></a>
 <li><a href="h_config_quells_asterisks">FEATURE: <!--#echo var="FEAT_suppress-asterisks-in-password-prompt"--></a>
 <li><a href="h_config_quell_attach_ext_warn">FEATURE: <!--#echo var="FEAT_quell-attachment-extension-warn"--></a>
 <li><a href="h_config_quell_attach_extra_prompt">FEATURE: <!--#echo var="FEAT_quell-attachment-extra-prompt"--></a>
@@ -30813,6 +30814,21 @@ want headers included in the reply message.
 &lt;End of help on this topic&gt;
 </BODY>
 </HTML>
+====== h_config_enable_topal_hack =====
+<HTML>
+<HEAD>
+<TITLE>FEATURE: <!--#echo var="FEAT_enable-topal-hack"--></TITLE>
+</HEAD>
+<BODY>
+<H1>FEATURE: <!--#echo var="FEAT_enable-topal-hack"--></H1>
+<P>
+This feature allows Topal (and other sending-filters) to change the
+MIME type of the email.  This is potentially dangerous because it
+pretends that multipart emails are plain emails.
+<P>
+&lt;End of help on this topic&gt;
+</BODY>
+</HTML>
 ====== h_config_del_from_dot =====
 <HTML>
 <HEAD>
diff --git a/pith/send.c b/pith/send.c
index 8d4d419a..95980b88 100644
--- a/pith/send.c
+++ b/pith/send.c
@@ -108,7 +108,7 @@ long       post_rfc822_output(char *, ENVELOPE *, BODY *, soutr_t, TCPSTREAM *,
 int        l_flush_net(int);
 int        l_putc(int);
 int	   pine_write_header_line(char *, char *, STORE_S *);
-int	   pine_write_params(PARAMETER *, STORE_S *);
+int	   pine_write_params(PARAMETER *, STORE_S *, BODY *);
 char      *tidy_smtp_mess(char *, char *, char *, size_t);
 int	   lmc_body_header_line(char *, int);
 int	   lmc_body_header_finish(void);
@@ -1733,7 +1733,9 @@ call_mailer(METAENV *header, struct mail_bodystruct *body, char **alt_smtp_serve
     /* set up counts and such to keep track sent percentage */
     send_bytes_sent = 0;
     gf_filter_init();				/* zero piped byte count, 'n */
+    dprint((1, "Topal: HERE 1!\n"));
     send_bytes_to_send = send_body_size(body);	/* count body bytes	     */
+    dprint((1, "Topal: HERE 2!\n"));
     ps_global->c_client_error[0] = error_buf[0] = '\0';
     we_cancel = busy_cue(_("Sending mail"),
 			 send_bytes_to_send ? sent_percent : NULL, 0);
@@ -1750,6 +1752,9 @@ call_mailer(METAENV *header, struct mail_bodystruct *body, char **alt_smtp_serve
 
 #endif
 
+    dprint((1, "Topal: HERE 3!\n"));
+
+
     /*
      * If the user's asked for it, and we find that the first text
      * part (attachments all get b64'd) is non-7bit, ask for 8BITMIME.
@@ -1757,6 +1762,7 @@ call_mailer(METAENV *header, struct mail_bodystruct *body, char **alt_smtp_serve
     if(F_ON(F_ENABLE_8BIT, ps_global) && (bp = first_text_8bit(body)))
        smtp_opts |= SOP_8BITMIME;
 
+    dprint((1, "Topal: HERE 3.1!\n"));
 #ifdef	DEBUG
 #ifndef DEBUGJOURNAL
     if(debug > 5 || (flags & CM_VERBOSE))
@@ -1820,17 +1826,21 @@ call_mailer(METAENV *header, struct mail_bodystruct *body, char **alt_smtp_serve
 	  }
     }
 
+    dprint((1, "Topal: HERE 4!\n"));
+
     /*
      * Install our rfc822 output routine 
      */
     sending_hooks.rfc822_out = mail_parameters(NULL, GET_RFC822OUTPUT, NULL);
     (void)mail_parameters(NULL, SET_RFC822OUTPUT, (void *)post_rfc822_output);
+    dprint((1, "Topal: HERE 5!\n"));
 
     /*
      * Allow for verbose posting
      */
     (void) mail_parameters(NULL, SET_SMTPVERBOSE,
 			   (void *) pine_smtp_verbose_out);
+    dprint((1, "Topal: HERE 6!\n"));
 
     /*
      * We do this because we want mm_log to put the error message into
@@ -1874,6 +1884,7 @@ call_mailer(METAENV *header, struct mail_bodystruct *body, char **alt_smtp_serve
 
     ps_global->noshow_error = 0;
 
+    dprint((1, "Topal: HERE 7!\n"));
     TIME_STAMP("smtp open", 1);
     if(sending_stream){
 	unsigned short save_encoding, added_encoding;
@@ -2468,9 +2479,12 @@ write_fcc(char *fcc, CONTEXT_S *fcc_cntxt, STORE_S *tmp_storage,
 BODY *
 first_text_8bit(struct mail_bodystruct *body)
 {
-    if(body->type == TYPEMULTIPART)	/* advance to first contained part */
+  /* Be careful of Topal changes... */
+    if(body->type == TYPEMULTIPART
+       && body->topal_hack != 1)	/* advance to first contained part */
       body = &body->nested.part->body;
 
+    /* Topal: this bit might not be correct, now. */
     return((body->type == TYPETEXT && body->encoding != ENC7BIT)
 	     ? body : NULL);
 }
@@ -2843,6 +2857,7 @@ pine_encode_body (struct mail_bodystruct *body)
     char *freethis;
 
     case TYPEMULTIPART:		/* multi-part */
+      if (body->topal_hack != 1) { /* But only if Topal hasn't touched it! */
       if(!(freethis=parameter_val(body->parameter, "BOUNDARY"))){
 	  char tmp[MAILTMPLEN];	/* make cookie not in BASE64 or QUOTEPRINT*/
 
@@ -2858,6 +2873,7 @@ pine_encode_body (struct mail_bodystruct *body)
       part = body->nested.part;	/* encode body parts */
       do pine_encode_body (&part->body);
       while ((part = part->next) != NULL);	/* until done */
+      }
       break;
 
     case TYPETEXT :
@@ -4253,7 +4269,9 @@ pine_rfc822_output_body(struct mail_bodystruct *body, soutr_t f, void *s)
 
     bodyso = (STORE_S *) body->contents.text.data;
 
-    if(body->type == TYPEMULTIPART) {   /* multipart gets special handling */
+    if(body->type == TYPEMULTIPART
+       && body->topal_hack != 1) {   /* multipart gets special handling, 
+					unless Topal messed with it */
 	part = body->nested.part;	/* first body part */
 					/* find cookie */
 	for (param = body->parameter; param && !cookie; param = param->next)
@@ -4360,10 +4378,14 @@ pine_rfc822_output_body(struct mail_bodystruct *body, soutr_t f, void *s)
 	 * BEFORE applying any encoding (rfc1341: appendix G)...
 	 * NOTE: almost all filters expect CRLF newlines 
 	 */
-	if(body->type == TYPETEXT
-	   && body->encoding != ENCBASE64
+	if(((body->type == TYPETEXT
+	     && body->encoding != ENCBASE64)
+	    /* Or if Topal mucked with it... */
+	    | (body->type == TYPEMULTIPART && body->topal_hack == 1))
 	   && !so_attr(bodyso, "rawbody", NULL)){
-	    gf_link_filter(gf_local_nvtnl, NULL);
+	  if(body->topal_hack == 1) 
+	    dprint((9, "Topal: Canonical conversion, although Topal has mangled...\n"));
+	  gf_link_filter(gf_local_nvtnl, NULL);
 	}
 
 	switch (body->encoding) {	/* all else needs filtering */
@@ -4476,7 +4498,7 @@ pine_write_body_header(struct mail_bodystruct *body, soutr_t f, void *s)
 	  return(pwbh_finish(0, so));
 	    
 	if(body->parameter){
-	    if(!pine_write_params(body->parameter, so))
+	    if(!pine_write_params(body->parameter, so, body))
 	      return(pwbh_finish(0, so));
 	}
 	else if ((body->type != TYPEMESSAGE
@@ -4558,7 +4580,7 @@ pine_write_body_header(struct mail_bodystruct *body, soutr_t f, void *s)
 		 && so_puts(so, body->disposition.type)))
 	      return(pwbh_finish(0, so));
 
-	    if(!pine_write_params(body->disposition.parameter, so))
+	    if(!pine_write_params(body->disposition.parameter, so, body))
 	      return(pwbh_finish(0, so));	      
 
 	    if(!so_puts(so, "\015\012"))
@@ -4620,7 +4642,7 @@ pine_write_header_line(char *hdr, char *val, STORE_S *so)
  * pine_write_param - convert, encode and write MIME header-field parameters
  */
 int
-pine_write_params(PARAMETER *param, STORE_S *so)
+pine_write_params(PARAMETER *param, STORE_S *so, BODY *body)
 {	      
     for(; param; param = param->next){
 	int   rv;
@@ -4629,9 +4651,17 @@ pine_write_params(PARAMETER *param, STORE_S *so)
 
 	cs = posting_characterset(param->value, NULL, HdrText);
 	cv = utf8_to_charset(param->value, cs, 0);
-	rv = (so_puts(so, "; ")
-	      && rfc2231_output(so, param->attribute, cv, (char *) tspecials, cs));
-
+	if (body->topal_hack == 1
+	    && !struncmp(param->attribute, "protocol", 9)) {
+	  /* Did Topal introduce more parameters? */
+	  dprint((9, "Topal: parameter encoding of protocol, with Topal hack\n"));
+	  rv = (so_puts(so, "; \015\012\011")
+		&& rfc2231_output(so, param->attribute, cv, (char *) tspecials, cs));
+	}
+	else
+	  rv = (so_puts(so, "; ")
+		&& rfc2231_output(so, param->attribute, cv, (char *) tspecials, cs));
+	
 	if(cv && cv != param->value)
 	  fs_give((void **) &cv);
 
@@ -4738,7 +4768,9 @@ send_body_size(struct mail_bodystruct *body)
     long  l = 0L;
     PART *part;
 
-    if(body->type == TYPEMULTIPART) {   /* multipart gets special handling */
+    if(body->type == TYPEMULTIPART 
+       && body->topal_hack != 1) {   /* multipart gets special handling 
+					but again, be careful of Topal */
 	part = body->nested.part;	/* first body part */
 	do				/* for each part */
 	  l += send_body_size(&part->body);