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Commit d79e9514 authored by Rob Swindell's avatar Rob Swindell :speech_balloon:
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Support forwarding of single-part HTML emails, add "Fwd:" subject prefix 

When forwarding a single-part MIME-encoded HTML email, the preamble (original message header info) and any user comments, need to be HTML-encoded.

Add the commonly-used "Fwd: " prefix to the default message subject, when forwarding.

This required that smb_getplaintext() no longer always-NULLify the message's text_subtype (e.g. "html"). For single-part messages, this element was getting freed and NULLed.

Add/use a new SMBLIB convenience function to add a string header field, but only if non-NULL: smb_hfield_string()
parent 4a824f52
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1 merge request!463MRC mods by Codefenix (2024-10-20)
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src/sbbs3/writemsg.cpp
+ 38
− 17
View file @ d79e9514
......@@ -743,11 +743,8 @@ bool sbbs_t::writemsg(const char *fname, const char *top, char *subj, long mode,
void sbbs_t::editor_info_to_msg(smbmsg_t* msg, const char* editor, const char* charset)
{
if(editor != NULL)
smb_hfield_str(msg, SMB_EDITOR, editor);
if(charset != NULL)
smb_hfield_str(msg, FIDOCHARSET, charset);
smb_hfield_string(msg, SMB_EDITOR, editor);
smb_hfield_string(msg, FIDOCHARSET, charset);
ushort useron_xedit = useron.xedit;
......@@ -1375,7 +1372,7 @@ bool sbbs_t::forwardmail(smbmsg_t* orgmsg, const char* to, const char* subject,
if(subject == NULL) {
subject = subj;
SAFECOPY(subj, orgmsg->subj);
SAFEPRINTF(subj, "Fwd: %s", orgmsg->subj);
bputs(text[SubjectPrompt]);
if(!getstr(subj, sizeof(subj) - 1, K_LINE | K_EDIT | K_AUTODEL | K_TRIM))
return false;
......@@ -1441,33 +1438,57 @@ bool sbbs_t::forwardmail(smbmsg_t* orgmsg, const char* to, const char* subject,
time32_t now32 = time32(NULL);
smb_hfield(&msg, FORWARDED, sizeof(now32), &now32);
char* br = NULL;
char* pg = nulstr;
char* lt = "<";
char* gt = ">";
if(orgmsg->text_subtype != NULL && stricmp(orgmsg->text_subtype, "html") == 0) {
lt = "&lt;";
gt = "&gt;";
br = "<br>";
pg = "<p>";
}
if(comment == NULL) {
while(online) {
while(online && !msgabort()) {
bputs(text[UeditComment]);
if(!getstr(str, 70, K_WRAP))
break;
smb_hfield_str(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, br);
}
if(!online || msgabort()) {
smb_freemsgmem(&msg);
return false;
}
} else {
if(*comment)
smb_hfield_str(&msg, SMB_COMMENT, comment);
smb_hfield_string(&msg, SMB_COMMENT, comment);
}
smb_hfield_str(&msg, SMB_COMMENT, "-----Forwarded Message-----");
if(smb_get_hfield(&msg, SMB_COMMENT, NULL) != NULL)
smb_hfield_string(&msg, SMB_COMMENT, pg);
smb_hfield_string(&msg, SMB_COMMENT, "-----Forwarded Message-----");
smb_hfield_string(&msg, SMB_COMMENT, br);
if(orgmsg->from_net.addr != NULL)
safe_snprintf(str, sizeof(str), "From: %s <%s>",orgmsg->from, smb_netaddrstr(&orgmsg->from_net, tmp));
safe_snprintf(str, sizeof(str), "From: %s %s%s%s"
,orgmsg->from, lt, smb_netaddrstr(&orgmsg->from_net, tmp), gt);
else
safe_snprintf(str, sizeof(str), "From: %s", orgmsg->from);
smb_hfield_str(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, br);
safe_snprintf(str, sizeof(str), "Date: %s", msgdate(orgmsg->hdr.when_written, tmp));
smb_hfield_str(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, br);
if(orgmsg->to_net.addr != NULL)
safe_snprintf(str, sizeof(str), "To: %s <%s>", orgmsg->to, smb_netaddrstr(&orgmsg->to_net, tmp));
safe_snprintf(str, sizeof(str), "To: %s %s%s%s"
,orgmsg->to, lt, smb_netaddrstr(&orgmsg->to_net, tmp), gt);
else
safe_snprintf(str, sizeof(str), "To: %s", orgmsg->to);
smb_hfield_str(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, br);
safe_snprintf(str, sizeof(str), "Subject: %s", orgmsg->subj);
smb_hfield_str(&msg, SMB_COMMENT, str);
smb_hfield_str(&msg, SMB_COMMENT, nulstr);
smb_hfield_string(&msg, SMB_COMMENT, str);
smb_hfield_string(&msg, SMB_COMMENT, pg);
// Re-use the original message's data
if((result = smb_open_da(&smb)) != SMB_SUCCESS) {
......
src/smblib/smblib.c
+ 11
− 1
View file @ d79e9514
......@@ -1218,13 +1218,23 @@ int SMBCALL smb_hfield_add_list(smbmsg_t* msg, hfield_t** hfield_list, void** hf
}
/****************************************************************************/
/* Convenience function to add an ASCIIZ string header field */
/* Convenience function to add an ASCIIZ string header field (or blank) */
/****************************************************************************/
int SMBCALL smb_hfield_add_str(smbmsg_t* msg, uint16_t type, const char* str, BOOL insert)
{
return smb_hfield_add(msg, type, str==NULL ? 0:strlen(str), (void*)str, insert);
}
/****************************************************************************/
/* Convenience function to add an ASCIIZ string header field (NULL ignored) */
/****************************************************************************/
int SMBCALL smb_hfield_string(smbmsg_t* msg, uint16_t type, const char* str)
{
if(str == NULL)
return SMB_ERR_HDR_FIELD;
return smb_hfield_add(msg, type, strlen(str), (void*)str, /* insert */FALSE);
}
/****************************************************************************/
/* Convenience function to a network address header field to msg */
/* Pass NULL for net_type to have the auto-detected net_type hfield added */
......
src/smblib/smblib.h
+ 1
− 0
View file @ d79e9514
......@@ -160,6 +160,7 @@ SMBEXPORT int SMBCALL smb_hfield_append(smbmsg_t* msg, uint16_t type, size_t le
SMBEXPORT int SMBCALL smb_hfield_append_str(smbmsg_t* msg, uint16_t type, const char* data);
SMBEXPORT int SMBCALL smb_hfield_add_list(smbmsg_t* msg, hfield_t** hfield_list, void** hfield_dat, BOOL insert);
SMBEXPORT int SMBCALL smb_hfield_add_netaddr(smbmsg_t* msg, uint16_t type, const char* str, uint16_t* nettype, BOOL insert);
SMBEXPORT int SMBCALL smb_hfield_string(smbmsg_t*, uint16_t type, const char*);
/* Convenience macro: */
#define smb_hfield_bin(msg, type, data) smb_hfield_add(msg, type, sizeof(data), &(data), /* insert: */FALSE)
/* Backward compatibility macros: */
......
src/smblib/smbtxt.c
+ 4
− 2
View file @ d79e9514
......@@ -495,7 +495,6 @@ char* SMBCALL smb_getplaintext(smbmsg_t* msg, char* buf)
const char* txt;
enum content_transfer_encoding xfer_encoding = CONTENT_TRANFER_ENCODING_NONE;
FREE_AND_NULL(msg->text_subtype);
if(msg->mime_version == NULL || msg->content_type == NULL) /* not MIME */
return NULL;
txt = mime_getcontent(buf, msg->content_type, "text/plain", 0, &xfer_encoding, &msg->text_charset
......@@ -505,9 +504,12 @@ char* SMBCALL smb_getplaintext(smbmsg_t* msg, char* buf)
,/* attachment: */NULL, /* attachment_len: */0, /* index: */0);
if(txt == NULL)
return NULL;
free(msg->text_subtype);
msg->text_subtype = strdup("html");
} else
} else {
free(msg->text_subtype);
msg->text_subtype = strdup("plain");
}
memmove(buf, txt, strlen(txt)+1);
if(*buf == 0) /* No decoding necessary */
......
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