https://gitlab.synchro.net/main/sbbs/-/commit/2db618ae2da445cf21a420c5
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Fix smb.subnum corruption in writemsg()

Fix issue introduced 9 years ago that could cause a crash after replying to a post via email or netmail and then displaying the header of a poll message or a normal message with votes:

Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f9f9569a317 in sbbs_t::show_msg (this=0x7f9f70c56880,
smb=0x7f9f70c5e4e0, msg=0x7f9ebadf08b0, p_mode=4, post=0x7f9f18071a24)
at getmsg.cpp:255
255 ,cfg.sub[smb->subnum]->misc&SUB_ NAME ? useron.name : useron.alias, NET_NONE, NULL);
[Current thread is 1 (Thread 0x7f9ebadf3700 (LWP 23279))]
(gdb) print smb->subnum
$1 = 4294967295
(gdb) bt
#0 0x00007f9f9569a317 in sbbs_t::show_msg (this=0x7f9f70c56880,
smb=0x7f9f70c5e4e0, msg=0x7f9ebadf08b0, p_mode=4, post=0x7f9f18071a24)
at getmsg.cpp:255
#1 0x00007f9f957b2aee in sbbs_t::scanposts (this=0x7f9f70c56880, subnum=9,
mode=2, find=0x7f9ebadf1270 "") at readmsgs.cpp:670
#2 0x00007f9f957bb75a in sbbs_t::scanallsubs (this=0x7f9f70c56880, mode=2)
at scansubs.cpp:219
#3 0x00007f9f9568c948 in sbbs_t::exec_msg (this=0x7f9f70c56880,
csi=0x7f9f70c64768) at execmsg.cpp:315
#4 0x00007f9f95683129 in sbbs_t::exec_function (this=0x7f9f70c56880,
csi=0x7f9f70c64768) at execfunc.cpp:422
#5 0x00007f9f95679450 in sbbs_t::exec (this=0x7f9f70c56880,
csi=0x7f9f70c64768) at exec.cpp:1199
#6 0x00007f9f9577d742 in node_thread (arg=0x7f9f70c56880) at main.cpp:4364

writemsg() was changing the global smb.subnum and when writing an email or netmail, that subnum value is -1 (since it's not a sub-board) and then later show_msg() is using the smb.subnum as a index into scfg.sub[] when determining if the current user already voted on the message being displayed and then: bang, crash, fall down, go boom.

Simply saving and restoring the smb.subnum when executing an external editor is all that was needed here. And this is the first use of the C++ "auto" keyword in Synchronet!
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https://gitlab.synchro.net/main/sbbs/-/commit/208cc78b54ac851645e8cbd1
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Don't save draft messages upon disconnect for Guest or "no one" (user #0)

Fix issue #508
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https://gitlab.synchro.net/main/sbbs/-/commit/ff3864002e9a51e98b1c83f5
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Bounds-check the buffer being written in msgeditor()

Replace the suspicious strcpy/strcat's in msgeditor(), the built-in line editor, with bounds-enforced snprintf() calls.
Also, properly define MAX_LINE_LEN to account for the trailing \r\n on each line. It appears we've been under allocating the total possible message buffer size (by 2 bytes per line) for a while now.
These 2 changes together should fix issue #547: apparent heap corruption due
to 'buf' overflow in msgeditor().
Also added a line count check/cap-enforcement with logged error message if exceeded (should never happen).

Also fixed in this commit: off-by-one when enforcing max message length in msgeditor().

Also added checks that the 'cols' (used in MAX_LINE_LEN) are reasonable values (40+), 2 was below the threshold of what would be expected to work since
there is logic that deducts 4 from cols, for example.
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https://gitlab.synchro.net/main/sbbs/-/commit/2d9f8a32c55c82016b13d0a1
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
When writing messages with a 'top' in raw-input-mode, don't add excessive CRLF

If the top already ends in a blank line, no additional CRLF is warranted (between the 'top' and the raw-input message 'body').
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https://gitlab.synchro.net/main/sbbs/-/commit/84527be03f4d728bafe58f10
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Fix new GCC warning in printf format string.
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https://gitlab.synchro.net/main/sbbs/-/commit/4f9a8b209a160d8fac1fc4a3
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Address a couple of Coverity-reported defects

CID 452331
CID 452330
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https://gitlab.synchro.net/main/sbbs/-/commit/daf8fa55aa08b39bf8b4fc6e
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Fix internal line editor buffer overflow (heap corruption)

... wasn't accounting for length of the 'top' buffer (when supplied).

Also, for raw input mode:
- flush the input buffer (stray LF) before accepting input
- turn off raw input mode if run out of bytes (max lines/length reached)

I was investigating the reported error by Nelgin:
!ERROR in writemsg.cpp line 1214 (msgeditor) checking
"max lines (20) exceeded" access=46
which I was unable to reproduce, when I encountered the issues addressed
in this commit.
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https://gitlab.synchro.net/main/sbbs/-/commit/3057bcc20148e3d93d1052a5
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Insure uploaded text ends in a new-line

We were appending .sig files to uploaded text, which may not have ended
in an LF or CRLF sequence. This fixes that.
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https://gitlab.synchro.net/main/sbbs/-/commit/ee5e3e8ee949f73113909680
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Fix an error path FILE* leak (CID 462238)

Go ahead and fix false-positive CID 33482 by adding a NULL check to quotestr() ---
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https://gitlab.synchro.net/main/sbbs/-/commit/1321d7f537df2b0eb0c99f33
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
When editing a message, pass the proper to/from/subj/area to drop file

Fixes issue #704 - not just for JS bbs.edit_msg(), but for all uses of the underlying sbbs_t::editmsg() function.

Replaced one specific comparison of subnum == INVALID_SUB with call to is_valid_subnum() just to be consistent. No functional change there.
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https://gitlab.synchro.net/main/sbbs/-/commit/00afb97cc670fdf3e11aa839
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Improvements to UTF-8 capable external editor support

1. Add an 8th line to MSGINF (for SlyEdit): the character set expected
(either "CP437", the default, or "UTF-8") based on the SCFG configuration
2. Don't apply "Soft-CR" (0x8D) stripping/expansion for UTF-8 editors
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https://gitlab.synchro.net/main/sbbs/-/commit/0dc20c1f9bf66ae376b0f22d
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
If the quotes.txt file doesn't exist with the right case, try any case

(but prefer the proper/configured case, based on config in SCFG).

Works around a problem where DDMsgReader always creates QUOTES.TXT (never quotes.txt), but SBBS tries to read in the file with the case it expects.
This wouldn't be a problem on case-insensitive file systems (Windows).

Resolves the writemsg.cpp error reported by Nelgin
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https://gitlab.synchro.net/main/sbbs/-/commit/f894f62108ad3251bfcba84c
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Fix bug in previous commit to this file

I'm surprised this didn't create a warning somewhere: treating char* as a
bool!
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https://gitlab.synchro.net/main/sbbs/-/commit/f754ad9057b0cd076bcf57b1
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Allow UTF-8 sequences in message subjects (passing K_UTF8 to getstr)

This was the behavior for all string input in SBBS until recently
(Commit 55ccda6294f82506), with this change, an exception is being
made for message subjects, but the vast majority of other string
input is still limited to single-byte (i.e. US-ASCII or CP437)
characters.

This should fix issue #720
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https://gitlab.synchro.net/main/sbbs/-/commit/10beb091cd05d255e3911a80
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Log a file "create" error if process_edited_file() returns a negative value

I discovered that sbbs_t::editfile() (exposed as JS console.editfile) just silently failed if it couldn't write to the destination file
(e.g. permission denied by OS).
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https://gitlab.synchro.net/main/sbbs/-/commit/e3f17e6411aba06d9894b169
Modified Files:
src/sbbs3/writemsg.cpp
Log Message:
Internal message/line editor improvements

* Allow left and right arrow keys to move between lines (within reason)
* Use the K_USEOFFSET getstr() mode flag to keep cursor position when moving
between lines with arrow keys
* Be smart about integer padding when /Listing lines with numbers
* Add range checking (!) and better error reporting for /Lx argument value
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