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patch 9.0.1484: Coverity warns for using invalid array index

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Problem:    Coverity warns for using invalid array index.
Solution:   Add entry for Xchacha, even though it is not used.
This commit is contained in:
Bram Moolenaar
2023-04-24 18:11:35 +01:00
parent 22363c6994
commit e1b4822137
2 changed files with 15 additions and 3 deletions
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16
src/memline.c
View File

@@ -64,7 +64,11 @@ typedef struct pointer_entry PTR_EN; // block/line-count pair
#define BLOCK0_ID1_C0 'c' // block 0 id 1 'cm' 0
#define BLOCK0_ID1_C1 'C' // block 0 id 1 'cm' 1
#define BLOCK0_ID1_C2 'd' // block 0 id 1 'cm' 2
#define BLOCK0_ID1_C3 'S' // block 0 id 1 'cm' 3 - but not actually used
// BLOCK0_ID1_C3 and BLOCK0_ID1_C4 are for libsodium enctyption. However, for
// these the swapfile is disabled, thus they will not be used. Added for
// consistency anyway.
#define BLOCK0_ID1_C3 'S' // block 0 id 1 'cm' 3
#define BLOCK0_ID1_C4 's' // block 0 id 1 'cm' 4
#if defined(FEAT_CRYPT)
static int id1_codes[] = {
@@ -72,6 +76,7 @@ static int id1_codes[] = {
BLOCK0_ID1_C1, // CRYPT_M_BF
BLOCK0_ID1_C2, // CRYPT_M_BF2
BLOCK0_ID1_C3, // CRYPT_M_SOD - Unused!
BLOCK0_ID1_C4, // CRYPT_M_SOD2 - Unused!
};
#endif
@@ -444,6 +449,8 @@ ml_set_mfp_crypt(buf_T *buf)
/*
* Prepare encryption for "buf" with block 0 "b0p".
* Note: should not be called with libsodium encryption, since xchacha20 does
* not support swapfile encryption.
*/
static void
ml_set_b0_crypt(buf_T *buf, ZERO_BL *b0p)
@@ -494,14 +501,17 @@ ml_set_crypt_key(
return; // no memfile yet, nothing to do
old_method = crypt_method_nr_from_name(old_cm);
// Swapfile encryption not supported by XChaCha20
if (crypt_method_is_sodium(crypt_get_method_nr(buf)) && *buf->b_p_key != NUL)
// Swapfile encryption is not supported by XChaCha20, therefore disable the
// swapfile to avoid plain text being written to disk.
if (crypt_method_is_sodium(crypt_get_method_nr(buf))
&& *buf->b_p_key != NUL)
{
// close the swapfile
mf_close_file(buf, TRUE);
buf->b_p_swf = FALSE;
return;
}
// First make sure the swapfile is in a consistent state, using the old
// key and method.
{

2
src/version.c
View File

@@ -695,6 +695,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1484,
/**/
1483,
/**/