Kevin McCarthy [Wed, 30 Sep 2015 03:25:28 +0000 (11:25 +0800)]
Fix chomp in smime_handle_cert_email.
During a review of the previous patch, Oswald Buddenhagen noticed two
of the fixed oob reads had another problem: they were "chomping" (the
newline) without verifying there actually was a newline at the end of
the string.
Kevin McCarthy [Wed, 30 Sep 2015 03:21:06 +0000 (11:21 +0800)]
Fix oob reads when fgets returns "\0". (closes #3776)
The ticket reported an out of bounds read in mutt_read_rfc822_line()
when a '\0' was embedded on its own line in the headers. The function
assumed if fgets() didn't return NULL, then the string would have at
least one character.
I scanned the rest of the code and found three other places making the
same assumption for fgets.
Thanks to hanno for finding this with the "american fuzzy lop" tool.
Kevin McCarthy [Sun, 6 Sep 2015 23:31:57 +0000 (16:31 -0700)]
Fix double-decode during IMAP browse.
cmd_parse_list() already calls imap_unmunge_mbox_name() on the mailbox
names returned from the server. However, browse_add_list_result() was
taking those mailbox names and passing them to imap_add_folder(), which
was calling imap_unmunge_mbox_name() yet again.
The reason is that imap_browse() was directly calling imap_add_folder()
too, passing in a previously encoded "mbox" name. After looking
carefully at the code, I could find no reason that mbox needed to
be encoded outside of the LIST commands.. Therefore I changed
imap_browse() to call imap_munge_mbox_name() on mbox for the
two LIST commands generated from it instead, and removed the
imap_unmunge_mbox_name() call inside imap_add_folder().
Kevin McCarthy [Sun, 6 Sep 2015 14:40:06 +0000 (07:40 -0700)]
Fix use after free of ctx->last_tag. (closes #3775)
When using imap to access gmail, tagging and saving messages to "all
mail" and pressing <sync-mailbox> can result in the call path:
mx_check_mailbox()
imap_check_mailbox()
imap_cmd_finish()
imap_expunge_mailbox()
mx_update_tables()
followed by:
mx_sync_mailbox()
The HEADER pointed to by ctx->last_tag will be removed and FREE'ed in
mx_update_tables(), but will subsequently be accessed in mx_sync_mailbox().
This patch simply sets ctx->last_tag=NULL if it is freed inside mx_update_tables().
Thanks to Peter Lekensteyn for the bug report and ASAN report.
Kevin McCarthy [Thu, 3 Sep 2015 01:11:28 +0000 (18:11 -0700)]
Add time_t conversion to fix gpgme segfault on OpenBSD.
time_t isn't the same size as gpgme_subkey_t->timestamp on OpenBSD.
Passing &subkey->timestamp to localtime was therefore passing an address
to the wrong size int and was causing a segfault.
Thanks to Hannes Wenzel for reporting the bug and providing a patch.
Kevin McCarthy [Mon, 17 Aug 2015 21:51:07 +0000 (14:51 -0700)]
Add idn to MUTTLIBS instead of LIBS (see #3638)
Currently, -lidn is included while linking all the mutt binaries. Add
it to MUTTLIBS instead so it's only used for the mutt linking.
Also, add $LIBICONV to $LIBS before checking for some of the idna
functions. On some sytems, there are apparently issues when using
static linking. (Thanks to grarpamp for reporting).
Kevin McCarthy [Mon, 17 Aug 2015 19:31:40 +0000 (12:31 -0700)]
Change mutt_adv_mktemp to call mutt_mktemp instead of mktemp. (see #3638).
mutt_mktemp is currently called in 95% of the cases in mutt, and
is already our "own rolled" version of mktemp. The "insecure mktemp
warning" discussion keeps coming up, so instead add prefix and suffix
functionality to mutt_mktemp() and call that.
All other uses of Tempdir in the mutt source did not call
mutt_expand_path() first, so remove that from mutt_adv_mktemp().
Kevin McCarthy [Wed, 29 Jul 2015 16:07:51 +0000 (09:07 -0700)]
Add error handling for ^ and other empty mailbox shortcuts.
(closes #2402) (closes #3735)
Explicitly mention the ^ example in the documentation added in 6d733cab6b45.
Add an error message for ^ when CurrentFolder is not set. Add checks
for other mailbox shortcuts that expand to the empty string. This
could happen if the @alias shortcut was accidentally used, or the value
referenced by a shortcut isn't set yet.
Kevin McCarthy [Mon, 27 Jul 2015 21:09:55 +0000 (14:09 -0700)]
Add "Mailbox Matching in Hooks" section to manual.
Folder-hook and mbox-hook perform mailbox shortcut expansion on the
regexp parameter. Add a section to the manual to give examples and make
the behavior clearer.
In certain circumstances, Exchange corrupts a multipart/encrypted block
into:
<multipart/mixed>
<text/plain>
<application/pgp-encrypted> [BASE64-encoded]
<application/octet-stream> [BASE64-encoded]
This patch pulls the full detection of valid/invalid multiparts
into mutt_body_handler(). It extracts a run_decode_and_handler()
function, which is reused by new intermediate handlers to decode
the application/octet-stream part before passing it directly to
crypt_pgp_encrypted_handler. These intermediate handlers then check
and set any GOODSIG flags back into the parent part.
This change may result in less error messages for invalid
multipart/encrypted parts. Instead, mutt will default to the
multipart_handler if it isn't fully "correct".
Viewing attachments uses crypt_pgp_decrypt_mime() which bypasses the
handler mechanism. Add decoding to the decrypt_mime() functions for pgp
and gpgme.
Thanks to Vincent Brillault for his analysis and initial patch.
Kevin McCarthy [Tue, 21 Jul 2015 19:34:49 +0000 (12:34 -0700)]
Imap: Fix flag caching after sync.
The flags cached in IMAP_HEADER_DATA were not updated to match the
HEADER flags after a sync. This means if a flag were toggled and synced
twice, the second sync was not sending the flag update.
Kevin McCarthy [Thu, 23 Jul 2015 21:57:04 +0000 (14:57 -0700)]
Fix compiler type warnings. (closes #3765)
The output of mutt_local_tz() was being passed to abs(). Technically
the return type is time_t, but it represents a small value: the timezone
offset in seconds. Add a safe explicit cast to int.
Change the txt parameter of mutt_make_help() to type const char *.
Typically all calls run the txt parameter through _(), which
accepts const char * and returns a char *. However, if NLS is not
enabled, _() is a noop, simply returning the parameter itself. In
mutt_compile_help(), items[i].name is const char *, so it will generate
a warning when passed as the txt parameter of mutt_make_help().
On some systems, e.g. OS X, snprintf is defined as a macro. One call
in hcache.c was embedding directives inside the snprintf call. This is
apparently undefined behavior, so duplicate the call instead.
Kevin McCarthy [Thu, 9 Jul 2015 21:50:05 +0000 (14:50 -0700)]
Use $(VAR) instead of @VAR@ in Makefile.am files. (closes #3664)
The @VAR@ form is not overridable, such as the case for #3664 where the
reporter wanted to override DOTLOCK_GROUP.
It's doubtful targets need to be overriden, but it makes sense to be
consistent in the usage of automake substituted variables unless there
is a particular reason/bug to work around.
Kevin McCarthy [Thu, 2 Jul 2015 18:21:19 +0000 (11:21 -0700)]
Convert from using mkinstalldirs to $(MKDIR_P).
The automake mkinstalldirs script is now deprecated. "install-sh -d"
can be used in place. Configure.ac already includes AC_PROG_INSTALL,
which will ensure install-sh is bundled. Add AC_PROG_MKDIR_P, which
will set $(MKDIR_P) to either a thread-safe "mkdir -p" or will fall back
to using install-sh.
Kevin McCarthy [Mon, 29 Jun 2015 21:35:28 +0000 (14:35 -0700)]
Add note to manual clarifying push/exec and folder-hook order.
Folder-hooks are executed in the order declared. However, push/exec
commands will simply prepend to the keyboard buffer. If there are
multiple push/exec commands, each will prepend to the earlier one. The
result is that they will end up being "run" in reverse order once keyboard
buffer processing starts.
Kevin McCarthy [Fri, 26 Jun 2015 19:23:26 +0000 (12:23 -0700)]
Fix IMAP segfault due to NULL capstr.
After a failed login, the connection is left open but capstr is freed.
If a second login attempt is made, imap_auth_sasl was trying to strstr
using the NULL capstr.
Add a NONULL around the capstr parameter to strstr. Change
imap_conn_find() to keep the capstr around until a successful
authentication occurs.
Model the smime.c searching off of classic pgp searching. Create
smime_get_key_by_hash()/addr()/str() functions that use a single
smime_get_candidates() function to search the index.
Use the new smime_keys generated purpose flag in the index to filter by
KEYFLAG_CANENCRYPT and KEYFLAG_CANSIGN. Old style indices fall back to
all-inclusive behavior.
Kevin McCarthy [Sun, 7 Jun 2015 20:59:19 +0000 (13:59 -0700)]
smime_keys: Add purpose flag to index.
A subsequent patch will change smime.c to use the purpose to filter
certs and keys that can't be used for signing or encryption.
Issuer, trust, and purpose flags were also added to the keys index file,
to keep parsing simpler in smime_keys as well as smime.c. The trust and
purpose are derived from the cert. Issuer is set to '?' as this should
never be needed for keys.
Kevin McCarthy [Mon, 25 May 2015 17:59:50 +0000 (10:59 -0700)]
smime_keys: Handle certificate chains in add_cert. (closes #3339) (closes #3559)
Find all chains in the certificate provided. For each chain create a
separate leaf and intermediate certificate file. Because Mutt controls
the label prompt, use a single label for all chains.
Also, loosen up cert file parsing to allow attributes even if they
aren't delimited by a "Bag Attributes" header.
Thanks to David J. Weller-Fahy for his testing and feedback!
Kevin McCarthy [Mon, 18 May 2015 20:27:12 +0000 (13:27 -0700)]
smime_keys: Convert openssl execution to use open("-|",...). (see #3575) (see #2456)
This does a fork/exec, bypassing the shell, and so handles
spaces, quotes, and other shell-characters problems better than the
simple fix in changeset:c66a6bd5d0d5
This also fixes the "verify with crl" bug in #2456: the grep is now done
in perl.
Thank you Vincent Lefevre for your review and feedback!
Kevin McCarthy [Fri, 15 May 2015 17:47:38 +0000 (10:47 -0700)]
Start cleaning up and fixing smime_keys.pl (closes #3324) (see #2456)
* Convert to using File::Temp (#3324). This was also suggested at
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775199
* Use File::Temp for add_p12 temp file. (#2456)
* Make the query_label() method a bit more robust with empty strings,
ctrl-d, and leading spaces.
* Clean up openssl_do_verify() logic. Mark cert as invalid
rather that die'ing if an openssl verify command fails.
* General cleanup:
- Clearly separate op handler, certificate management, and helper
functions by section and using prefixes.
- Create openssl helper functions to reduce copy/paste invocations
and make the code clearer.
- Make indentation consistent at 2 spaces.
- Change handle_add_pem() to re-use handle_add_chain() once the
correct files are identified.
- Change openssl_parse_pem() to return a single array of data
structures representing the parsed certs/keys.
Kevin McCarthy [Sun, 3 May 2015 23:25:45 +0000 (16:25 -0700)]
Provide SSL cipher selection option. (closes #3167)
Creates a $ssl_ciphers option that allows direct selection of the
ciphers for OpenSSL (via SSL_CTX_set_cipher_list) and GnuTLS (via
gnutls_priority_set_direct).
Fix performance regression for ~b/~B searching. (closes #3743)
In mutt_is_autoview(), changeset b58cdfacfb89 introduced a call to
rfc1524_mailcap_lookup() before checking if the MIME type should
be autoviewed based on the user's preferences. This caused a major
performance regression for ~b/~B searching.
Rearrange mutt_is_autoview() to check the user preferences first, then
search for a mailcap entry only if the MIME type should be autoviewed.
In order to preserve correct mime_lookup behavior, re-add a call to
mutt_check_lookup_list() before scanning the AutoViewList.
Kevin McCarthy [Sun, 19 Apr 2015 20:15:50 +0000 (13:15 -0700)]
Add $crypt_confirmhook option. (see #3727)
Allow the confirmation prompt for crypt-hooks to be disabled. This is
useful for multiple crypt-hook users (e.g. encrypted mailing lists), or
just for people who are certain of their crypt-hooks and don't want to
be prompted every time.
Kevin McCarthy [Sun, 19 Apr 2015 20:15:48 +0000 (13:15 -0700)]
Allow multiple crypt-hooks with the same regexp. (closes #3727).
Changes the crypt-hook to accumulate a LIST of hooks with
the same regexp, as opposed to replacing the hook data.
This is useful for the case of encrypted mailing lists.
Update pgp classic and gpgme to process a LIST of crypt-hook
values instead of just one.
This version of the patch creates a new _mutt_list_hook() function that
(in theory) other hooks could use if they were changed to return a list.
It also changes the behavior when a crypt-hook is declined: previously
it would immediately use the original recipient for key selection. Now
it will only do that if all crypt-hooks for a recipient are declined.
This allows all, a subset, or none of the hooks to be used.
Thanks to Rejo Zenger, Remco Rijnders, and Dale Woolridge for their work
on various versions of this patch.
Kevin McCarthy [Thu, 16 Apr 2015 01:57:17 +0000 (18:57 -0700)]
Use fingerprints instead of keyIDs internally. (see #3695)
Add a helper function, pgp_fpr_or_lkeyid(), that returns the fingerprint
if available, otherwise falls back to the long key id. Convert Mutt to
use that value for pgp command invocation.
Change gpgme to use an equivalent crypt_fpr_or_lkeyid() function in a
couple places too (for keylist generation and sign-as key selection).
Update documentation to mention fingerprints and the --with-fingerprint
option for gpg invocation.
Change pgp_long_ids to default: yes, but add a note mentioning
it's only used for the display of key IDs in a few places.
Kevin McCarthy [Tue, 7 Apr 2015 01:39:09 +0000 (18:39 -0700)]
Clarify hook pattern vs regexp in muttrc.man page.
Updates to the muttrc.man page were inadvertently not included in
changeset:aac979f8b529. Fix mbox-hook and crypt-hook to show
they accept a regexp, not a pattern.
Kevin McCarthy [Mon, 30 Mar 2015 22:45:58 +0000 (15:45 -0700)]
Fix const errors caused by find_keys() changes.
Part 4 of the oppenc series changed the keyID type to const as part
of some cleanup changes. At the time, that only propagated to
crypt_getkeybystr(), but with the fingerprint changes, this is starting
to propagate too far.
Create a separate non-const variable to deal with the crypt hook value
and revert crypt_getkeybystr()'s parameter to non-const.
Kevin McCarthy [Mon, 30 Mar 2015 22:45:56 +0000 (15:45 -0700)]
Add ui elements for oppenc mode.
Add a status message to the Security line when oppenc is enabled.
For each send menu, add the ability to toggle it on or off.
When enabled, the menus won't show the (e)ncrypt or (b)oth options,
and the (c)lear function only clears the SIGN bit when it is active.
Change the gpgme_send_menu() to directly use the ENCRYPT and SIGN
flags instead of the PGPENCRYPT/SIGN and SMIMEENCRYPT/SMIME flags.
Using the latter sometimes resulted in the APPLICATION bit unset, which made
oppenc unhappy.
The send_menus previously used a switch statement using choice numbers.
Since the menus now vary based on the oppenc option and message bit
being set, these were all changed to convert the numbers back to a
choice letter.
Kevin McCarthy [Mon, 30 Mar 2015 22:45:55 +0000 (15:45 -0700)]
Add a security bit to the message for oppenc mode.
This allows oppenc to be enabled/disabled on a message level. If
something initially enables encryption, such as crypt_autoencrypt or
crypt_replyencrypt, oppenc is turned off for the message.
Change the postpone/resume code to persist the oppenc bit.
Also change resend message to enable and invoke oppenc if the option is
set.
Kevin McCarthy [Mon, 30 Mar 2015 22:45:54 +0000 (15:45 -0700)]
Add the crypt_opportunistic_encrypt option and calls.
This patch creates the OPTCRYPTOPPORTUNISTICENCRYPT option and
documentation.
It also adds calls to crypt_opportunistic_encrypt() during initial
message composition, after updating to, cc, or bcc, and after editing
the message (if edit_headers is enabled).
Kevin McCarthy [Mon, 30 Mar 2015 22:45:52 +0000 (15:45 -0700)]
Implement oppenc_mode in the find_keys methods.
oppenc_mode is used by crypt_opportunistic_encrypt to determine whether
there are valid keys for all recipients of a message, without prompting
the user.
The patch wraps around prompts, and makes getkeybyaddr methods return a
valid address-matching key without prompting.
The patch also fixes a small problem with gpgme's getkeybyaddr. When
determining if there were multiple strong matches, it was comparing the
crypt_key_t instead of its kobj member (gpgme_key_t).
The patch also enables a call to crypt_is_numerical_keyid() in
find_keys(), so that crypt-hooks can actually be checked without
prompting when gpgme is enabled. (The addition was patterned off of the
pgp_findKeys() function).
Kevin McCarthy [Mon, 30 Mar 2015 22:45:51 +0000 (15:45 -0700)]
Pull is_numerical_keyid() into crypt.c.
A subsequent patch (re?)-introduces a call to is_numerical_keyid inside
find_keys(). Rather than duplicate the function, this patch pulls it
into crypt.c, where find_keys() and pgp_findKeys() can both call it.
Kevin McCarthy [Mon, 30 Mar 2015 22:45:47 +0000 (15:45 -0700)]
Refactor the address list generation out of the find_keys routines.
All four find_keys routines have a similar set up code for generating a
single address list out of the to, cc, bcc lists. This patch pulls all
the code into crypt_get_keys.
This is done to simplify the functions before later patches make them
more complicated (with the oppenc_mode parameter).
Kevin McCarthy [Thu, 5 Mar 2015 03:24:31 +0000 (19:24 -0800)]
Fix pgp_application_pgp_handler to remove all tempfiles.
If multiple PGP blocks are present in an email, Mutt only cleans up the
tempfiles for the last block. Thanks to Dennis Preiser for the patch
and sample mbox file demonstrating the problem.
This patch also fixes the argument to mutt_perror for the pgpout
tempfile.
Eike Rathke [Wed, 11 Feb 2015 20:38:37 +0000 (21:38 +0100)]
Allow fingerprint user input for key selection. (see #3695)
Accept and check input of a fingerprint and find the matching key.
Note that for both to work, match against and display of fingerprint, the
pgp_list_pubring_command and pgp_list_secring_command need to contain the
--with-fingerprint option, or have with-fingerprint in ~/.gnupg/gpg.conf.
Kevin McCarthy [Sun, 15 Feb 2015 18:09:10 +0000 (10:09 -0800)]
Add fingerprint record parsing for pgp list keys. (see #3695)
Modify parse_pub_line to parse fpr records and add the fingerprint to
the pgp_key_t's fingerprint field.
Add "--with-fingerprint --with-fingerprint" to the
pgp_list_pubring_command and pgp_list_secring_command commands in
contrib/gpg.rc. The second invocation generates fpr records for subkeys
too.
Peter Wu [Tue, 10 Feb 2015 17:29:24 +0000 (18:29 +0100)]
Fix buffer underread for empty header values. (closes #3736)
When a header has no value (*p == '\0' so l == 0), do not read outside
the buffer but print the newline anyway when a tag is already printed
(col != 0).
Caught by ASAN while opening a draft with no Subject.
Kevin McCarthy [Sun, 8 Feb 2015 22:19:41 +0000 (14:19 -0800)]
Cache uid validity in crypt_key_t.
In order to find the validity for a crypt_key_t, the code has to loop
through the key->kobj->uids list up to the correct index. This is a
bit silly since the uid is available when the crypt_key_t is created in
get_candidates().
This patch adds a validity field, and changes the various places to use
that instead of looping.
Also fix a bug in _crypt_compare_trust(): it was using the validity of
the first uid instead of the corresponding uid's validity.
Kevin McCarthy [Sun, 8 Feb 2015 21:44:10 +0000 (13:44 -0800)]
Fix pgp-gpgme to set revoke/expired/disabled flags.
The code wasn't settings those flags in get_candidates().
This patch adds it to the pgp path. I don't know if these flags apply
to SMIME so am leaving them out for the smime branch.
Fix up crypt_select_key() to follow the same logic as pgp_select_key().
Kevin McCarthy [Mon, 2 Feb 2015 21:25:17 +0000 (13:25 -0800)]
Fix mutt_parse_crypt_hdr() sign_as behavior.
Currently, if a message is postponed with only the E encryption flag,
when it is resumed, pgp_sign_as will be overwritten (with an empty
string).
This intention of the behavior was probably to restore the exact state
of pgp_sign_as upon resuming. However, if the message wasn't marked for
signing, the state of pgp_sign_as is not known. This patch changes the
mutt_parse_crypt_hdr() to only set an empty pgp_sign_as if there is an S
flag (and if set_empty_signas is true).
mutt_edit_headers() also uses the function, but it doesn't want to
overwrite pgp_sign_as with just an S flag. The set_signas parameter is
renamed to (a hopefully clearer) "set_empty_signas".
Kevin McCarthy [Thu, 15 Jan 2015 22:18:53 +0000 (14:18 -0800)]
Send the IMAP \Draft flag when postponing a message.
This patch adds a mx_open_new_message() flag, M_SET_DRAFT. It also adds
a MESSAGE->flags.draft flag.
mutt_write_fcc() passes the M_SET_DRAFT flag to mx_open_new_message(),
which then sets MESSAGE->flags.draft. Then, imap_append_message() is
able to see this flag and so adds the \Draft flag.
The imap_append_message() function started to have a bit too many flags,
so this version of the patch separates out the flag generating code into
a simpler version.