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DBD-SQLite-1.55_07
River stage four • 518 direct dependents • 1146 total dependents
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/ DBD::SQLite::VirtualTable::FileContent
Security Advisories (15)
CVE-2020-13434 (2020-05-24)

SQLite through 3.32.0 has an integer overflow in sqlite3_str_vappendf in printf.c.

CVE-2020-11656 (2020-04-09)

In SQLite through 3.31.1, the ALTER TABLE implementation has a use-after-free, as demonstrated by an ORDER BY clause that belongs to a compound SELECT statement.

CVE-2020-9327 (2020-02-21)

In SQLite 3.31.1, isAuxiliaryVtabOperator allows attackers to trigger a NULL pointer dereference and segmentation fault because of generated column optimizations.

CVE-2018-20506 (2019-04-03)

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.

CVE-2020-13630 (2020-05-27)

ext/fts3/fts3.c in SQLite before 3.32.0 has a use-after-free in fts3EvalNextRow, related to the snippet feature.

CVE-2019-8457 (2019-05-30)

SQLite3 from 3.6.0 to and including 3.27.2 is vulnerable to heap out-of-bound read in the rtreenode() function when handling invalid rtree tables.

CVE-2020-15358 (2020-06-27)

In SQLite before 3.32.3, select.c mishandles query-flattener optimization, leading to a multiSelectOrderBy heap overflow because of misuse of transitive properties for constant propagation.

CVE-2020-13632 (2020-05-27)

ext/fts3/fts3_snippet.c in SQLite before 3.32.0 has a NULL pointer dereference via a crafted matchinfo() query.

CVE-2020-13631 (2020-05-27)

SQLite before 3.32.0 allows a virtual table to be renamed to the name of one of its shadow tables, related to alter.c and build.c.

CVE-2020-13435 (2020-05-24)

SQLite through 3.32.0 has a segmentation fault in sqlite3ExprCodeTarget in expr.c.

CVE-2020-11655 (2020-04-09)

SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a malformed window-function query because the AggInfo object's initialization is mishandled.

CVE-2019-19646 (2019-12-09)

pragma.c in SQLite through 3.30.1 mishandles NOT NULL in an integrity_check PRAGMA command in certain cases of generated columns.

CVE-2019-19645 (2019-12-09)

alter.c in SQLite through 3.30.1 allows attackers to trigger infinite recursion via certain types of self-referential views in conjunction with ALTER TABLE statements.

CVE-2018-20346 (2018-12-21)

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases), aka Magellan.

CVE-2018-8740 (2018-03-17)

In SQLite through 3.22.0, databases whose schema is corrupted using a CREATE TABLE AS statement could cause a NULL pointer dereference, related to build.c and prepare.c.

NAME

DBD::SQLite::VirtualTable::FileContent -- virtual table for viewing file contents

SYNOPSIS

Within Perl :

$dbh->sqlite_create_module(fcontent => "DBD::SQLite::VirtualTable::FileContent");

Then, within SQL :

CREATE VIRTUAL TABLE tbl USING fcontent(
   source      = src_table,
   content_col = content,
   path_col    = path,
   expose      = "path, col1, col2, col3", -- or "*"
   root        = "/foo/bar"
   get_content = Foo::Bar::read_from_file
  );

SELECT col1, path, content FROM tbl WHERE ...;

DESCRIPTION

A "FileContent" virtual table is bound to some underlying source table, which has a column containing paths to files. The virtual table behaves like a database view on the source table, with an added column which exposes the content from those files.

This is especially useful as an "external content" to some fulltext table (see DBD::SQLite::Fulltext_search) : the index table stores some metadata about files, and then the fulltext engine can index both the metadata and the file contents.

PARAMETERS

Parameters for creating a FileContent virtual table are specified within the CREATE VIRTUAL TABLE statement, just like regular column declarations, but with an '=' sign. Authorized parameters are :

source

The name of the source table. This parameter is mandatory. All other parameters are optional.

content_col

The name of the virtual column exposing file contents. The default is content.

path_col

The name of the column in source that contains paths to files. The default is path.

expose

A comma-separated list (within double quotes) of source column names to be exposed by the virtual table. The default is "*", which means all source columns.

root

An optional root directory that will be prepended to the path column when opening files.

get_content

Fully qualified name of a Perl function for reading file contents. The default implementation just slurps the entire file into a string; but this hook can point to more sophisticated implementations, like for example a function that would remove html tags. The hooked function is called like this :

$file_content = $get_content->($path, $root);

AUTHOR

Laurent Dami <dami@cpan.org>

COPYRIGHT AND LICENSE

Copyright Laurent Dami, 2014.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.