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PhotoRec: extract the filesize from sqlite header when available

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This commit is contained in:
Christophe Grenier 2015-08-26 10:05:38 +02:00
parent 5fedcb4831
commit 223dec36fb
1 changed files with 10 additions and 3 deletions
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13
src/file_sql.c
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@ -74,10 +74,11 @@ struct db_header
static int header_check_sqlite(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
const struct db_header *hdr=(const struct db_header *)buffer;
const unsigned int pagesize=be16(hdr->pagesize);
unsigned int pagesize=be16(hdr->pagesize);
/* Must be a power of two between 512 and 32768 inclusive, or the value 1 representing a page size of 65536. */
if(pagesize!=1 &&
(pagesize<512 || ((pagesize-1) & pagesize)!=0))
if(pagesize==1)
pagesize=65536;
if(pagesize<512 || ((pagesize-1) & pagesize)!=0)
return 0;
reset_file_recovery(file_recovery_new);
#ifdef DJGPP
@ -86,6 +87,12 @@ static int header_check_sqlite(const unsigned char *buffer, const unsigned int b
file_recovery_new->extension=file_hint_sqlite.extension;
#endif
file_recovery_new->min_filesize=sizeof(struct db_header);
if(be32(hdr->filesize_in_page)!=0 && be32(hdr->file_change_counter)==be32(hdr->version_valid_for))
{
file_recovery_new->calculated_file_size=(uint64_t)be32(hdr->filesize_in_page) * pagesize;
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
}
return 1;
}