diff options
Diffstat (limited to 'meta/recipes-core/meta/cve-update-db-native.bb')
| -rw-r--r-- | meta/recipes-core/meta/cve-update-db-native.bb | 97 |
1 files changed, 71 insertions, 26 deletions
diff --git a/meta/recipes-core/meta/cve-update-db-native.bb b/meta/recipes-core/meta/cve-update-db-native.bb index 59e7d7dc2c..efc32470d3 100644 --- a/meta/recipes-core/meta/cve-update-db-native.bb +++ b/meta/recipes-core/meta/cve-update-db-native.bb @@ -19,6 +19,9 @@ CVE_DB_UPDATE_INTERVAL ?= "86400" # Timeout for blocking socket operations, such as the connection attempt. CVE_SOCKET_TIMEOUT ?= "60" +NVDCVE_URL ?= "https://nvd.nist.gov/feeds/json/cve/1.1/nvdcve-1.1-" + +CVE_DB_TEMP_FILE ?= "${CVE_CHECK_DB_DIR}/temp_nvdcve_1.1.db" python () { if not bb.data.inherits_class("cve-check", d): @@ -31,26 +34,15 @@ python do_fetch() { """ import bb.utils import bb.progress - import sqlite3, urllib, urllib.parse, shutil, gzip - from datetime import date + import shutil bb.utils.export_proxies(d) - BASE_URL = "https://nvd.nist.gov/feeds/json/cve/1.1/nvdcve-1.1-" - YEAR_START = 2002 - db_file = d.getVar("CVE_CHECK_DB_FILE") db_dir = os.path.dirname(db_file) + db_tmp_file = d.getVar("CVE_DB_TEMP_FILE") - cve_socket_timeout = int(d.getVar("CVE_SOCKET_TIMEOUT")) - - if os.path.exists("{0}-journal".format(db_file)): - # If a journal is present the last update might have been interrupted. In that case, - # just wipe any leftovers and force the DB to be recreated. - os.remove("{0}-journal".format(db_file)) - - if os.path.exists(db_file): - os.remove(db_file) + cleanup_db_download(db_file, db_tmp_file) # The NVD database changes once a day, so no need to update more frequently # Allow the user to force-update @@ -67,16 +59,68 @@ python do_fetch() { pass bb.utils.mkdirhier(db_dir) + if os.path.exists(db_file): + shutil.copy2(db_file, db_tmp_file) + + if update_db_file(db_tmp_file, d) == True: + # Update downloaded correctly, can swap files + shutil.move(db_tmp_file, db_file) + else: + # Update failed, do not modify the database + bb.note("CVE database update failed") + os.remove(db_tmp_file) +} + +do_fetch[lockfiles] += "${CVE_CHECK_DB_FILE_LOCK}" +do_fetch[file-checksums] = "" +do_fetch[vardeps] = "" + +def cleanup_db_download(db_file, db_tmp_file): + """ + Cleanup the download space from possible failed downloads + """ + + # Clean up the updates done on the main file + # Remove it only if a journal file exists - it means a complete re-download + if os.path.exists("{0}-journal".format(db_file)): + # If a journal is present the last update might have been interrupted. In that case, + # just wipe any leftovers and force the DB to be recreated. + os.remove("{0}-journal".format(db_file)) + + if os.path.exists(db_file): + os.remove(db_file) + + # Clean-up the temporary file downloads, we can remove both journal + # and the temporary database + if os.path.exists("{0}-journal".format(db_tmp_file)): + # If a journal is present the last update might have been interrupted. In that case, + # just wipe any leftovers and force the DB to be recreated. + os.remove("{0}-journal".format(db_tmp_file)) + + if os.path.exists(db_tmp_file): + os.remove(db_tmp_file) + +def update_db_file(db_tmp_file, d): + """ + Update the given database file + """ + import bb.utils, bb.progress + from datetime import date + import urllib, gzip, sqlite3 + + YEAR_START = 2002 + cve_socket_timeout = int(d.getVar("CVE_SOCKET_TIMEOUT")) # Connect to database - conn = sqlite3.connect(db_file) + conn = sqlite3.connect(db_tmp_file) initialize_db(conn) with bb.progress.ProgressHandler(d) as ph, open(os.path.join(d.getVar("TMPDIR"), 'cve_check'), 'a') as cve_f: total_years = date.today().year + 1 - YEAR_START for i, year in enumerate(range(YEAR_START, date.today().year + 1)): + bb.debug(2, "Updating %d" % year) ph.update((float(i + 1) / total_years) * 100) - year_url = BASE_URL + str(year) + year_url = (d.getVar('NVDCVE_URL')) + str(year) meta_url = year_url + ".meta" json_url = year_url + ".json.gz" @@ -85,8 +129,11 @@ python do_fetch() { response = urllib.request.urlopen(meta_url, timeout=cve_socket_timeout) except urllib.error.URLError as e: cve_f.write('Warning: CVE db update error, Unable to fetch CVE data.\n\n') - bb.warn("Failed to fetch CVE data (%s)" % e.reason) - return + bb.warn("Failed to fetch CVE data (%s)" % e) + import socket + result = socket.getaddrinfo("nvd.nist.gov", 443, proto=socket.IPPROTO_TCP) + bb.warn("Host IPs are %s" % (", ".join(t[4][0] for t in result))) + return False if response: for l in response.read().decode("utf-8").splitlines(): @@ -96,7 +143,7 @@ python do_fetch() { break else: bb.warn("Cannot parse CVE metadata, update failed") - return + return False # Compare with current db last modified date cursor = conn.execute("select DATE from META where YEAR = ?", (year,)) @@ -104,6 +151,7 @@ python do_fetch() { cursor.close() if not meta or meta[0] != last_modified: + bb.debug(2, "Updating entries") # Clear products table entries corresponding to current year conn.execute("delete from PRODUCTS where ID like ?", ('CVE-%d%%' % year,)).close() @@ -116,19 +164,16 @@ python do_fetch() { except urllib.error.URLError as e: cve_f.write('Warning: CVE db update error, CVE data is outdated.\n\n') bb.warn("Cannot parse CVE data (%s), update failed" % e.reason) - return - + return False + else: + bb.debug(2, "Already up to date (last modified %s)" % last_modified) # Update success, set the date to cve_check file. if year == date.today().year: cve_f.write('CVE database update : %s\n\n' % date.today()) conn.commit() conn.close() -} - -do_fetch[lockfiles] += "${CVE_CHECK_DB_FILE_LOCK}" -do_fetch[file-checksums] = "" -do_fetch[vardeps] = "" + return True def initialize_db(conn): with conn: |