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Overview
| Comment: | Take steps to avoid a potential integer overflow in sessionBufferGrow(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
f7affa2e708d1b4c7c47157bcb18e9f7 |
| User & Date: | dan 2018-10-18 15:17:18 |
Context
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2018-10-20
| ||
| 13:48 | Add the sqlite3changeset_start_v2() - a new version of _start() that accepts a flags parameter - and a streaming equivalent to the sessions module. Also add the SQLITE_CHANGESETSTART_INVERT flag, used with start_v2() to invert a changeset while iterating through it. (check-in: cbedcb9a user: dan tags: trunk) | |
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2018-10-18
| ||
| 15:17 | Take steps to avoid a potential integer overflow in sessionBufferGrow(). (check-in: f7affa2e user: dan tags: trunk) | |
| 14:59 | Add the SQLITE_CHANGESETAPPLY_INVERT flag to sessions. For inverting and applying a changeset in a single step. (check-in: d4b6406e user: dan tags: trunk) | |
Changes
Changes to ext/session/sqlite3session.c.
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**
** If successful, return zero. Otherwise, if an OOM condition is encountered,
** set *pRc to SQLITE_NOMEM and return non-zero.
*/
static int sessionBufferGrow(SessionBuffer *p, int nByte, int *pRc){
if( *pRc==SQLITE_OK && p->nAlloc-p->nBuf<nByte ){
u8 *aNew;
int nNew = p->nAlloc ? p->nAlloc : 128;
do {
nNew = nNew*2;
}while( nNew<(p->nBuf+nByte) );
aNew = (u8 *)sqlite3_realloc(p->aBuf, nNew);
if( 0==aNew ){
*pRc = SQLITE_NOMEM;
}else{
p->aBuf = aNew;
p->nAlloc = nNew;
}
}
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| | | |
1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 |
**
** If successful, return zero. Otherwise, if an OOM condition is encountered,
** set *pRc to SQLITE_NOMEM and return non-zero.
*/
static int sessionBufferGrow(SessionBuffer *p, int nByte, int *pRc){
if( *pRc==SQLITE_OK && p->nAlloc-p->nBuf<nByte ){
u8 *aNew;
i64 nNew = p->nAlloc ? p->nAlloc : 128;
do {
nNew = nNew*2;
}while( (nNew-p->nBuf)<nByte );
aNew = (u8 *)sqlite3_realloc64(p->aBuf, nNew);
if( 0==aNew ){
*pRc = SQLITE_NOMEM;
}else{
p->aBuf = aNew;
p->nAlloc = nNew;
}
}
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