[RFC PATCH v6 1/2] credential-store: warn instead of fatal for bogus lines from store
- From
Carlo Marcelo Arenas Belón <carenas@gmail.com>
- Date
- Apr 29, 2020, 20:35 UTC
- Message-ID
- <20200429203546.56753-2-carenas@gmail.com>
- In-Reply-To
- <20200429203546.56753-1-carenas@gmail.com>
with the added checks for invalid URLs in credentials, any locally modified store files which might have empty lines or even comments were reported[1] failing to parse as valid credentials.
instead of doing a hard check for credentials, do a soft one and warn the user so any invalid entries could be corrected.
[1] https://stackoverflow.com/a/61420852/5005936
Reported-by: Dirk <dirk@ed4u.de> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> --- Documentation/git-credential-store.txt | 12 ++++++-- credential-store.c | 22 +++++++++----- t/t0302-credential-store.sh | 42 ++++++++++++++++++++++++++ 3 files changed, 66 insertions(+), 10 deletions(-)
diff --git a/Documentation/git-credential-store.txt b/Documentation/git-credential-store.txt index 76b0798856..30d498fe54 100644 --- a/Documentation/git-credential-store.txt +++ b/Documentation/git-credential-store.txt @@ -95,8 +95,16 @@ https://user:pass@example.com ------------------------------ No other kinds of lines (e.g. empty lines or comment lines) are -allowed in the file, even though some may be silently ignored. Do -not view or edit the file with editors. +allowed in the file, even though historically the parser was very +lenient and some might had been silently ignored. + +Do not edit the file with editors as it could compromise the validity +of your credentials by sometimes subtle formatting issues (like spaces) + +In cases where those formatting issues are detected during parsing a +warning indicating the line found will be printed to stderr so it can +be corrected at your earliest convenience, but the remaining valid +credentials will be used to try to find a match as described below. When Git needs authentication for a particular URL context, credential-store will consider that context a pattern to match against diff --git a/credential-store.c b/credential-store.c index c010497cb2..1cc5ca081a 100644 --- a/credential-store.c +++ b/credential-store.c @@ -15,6 +15,7 @@ static int parse_credential_file(const char *fn, struct strbuf line = STRBUF_INIT; struct credential entry = CREDENTIAL_INIT; int found_credential = 0; + int lineno = 0; fh = fopen(fn, "r"); if (!fh) { @@ -24,16 +25,21 @@ static int parse_credential_file(const char *fn, } while (strbuf_getline_lf(&line, fh) != EOF) { - credential_from_url(&entry, line.buf); - if (entry.username && entry.password && - credential_match(c, &entry)) { - found_credential = 1; - if (match_cb) { - match_cb(&entry); - break; + lineno++; + if (!credential_from_url_gently(&entry, line.buf, 1)) { + if (entry.username && entry.password && + credential_match(c, &entry)) { + found_credential = 1; + if (match_cb) { + match_cb(&entry); + break; + } } } - else if (other_cb) + else + warning(_("ignoring invalid credential in %s:%d"), + fn, lineno); + if (!found_credential && other_cb) other_cb(&line); } diff --git a/t/t0302-credential-store.sh b/t/t0302-credential-store.sh index d6b54e8c65..801c1eb200 100755 --- a/t/t0302-credential-store.sh +++ b/t/t0302-credential-store.sh @@ -120,4 +120,46 @@ test_expect_success 'erase: erase matching credentials from both xdg and home fi test_must_be_empty "$HOME/.config/git/credentials" ' +test_expect_success 'get: credentials without scheme are invalid' ' + echo "://user:pass@example.com" >"$HOME/.git-credentials" && + cat >expect-stdout <<-\STDOUT && + protocol=https + host=example.com + username=askpass-username + password=askpass-password + STDOUT + test_config credential.helper store && + git credential fill <<-\EOF >stdout 2>stderr && + protocol=https + host=example.com + EOF + test_cmp expect-stdout stdout && + grep "askpass: Username for '\''https://example.com'\'':" stderr && + grep "askpass: Password for '\''https://askpass-username@example.com'\'':" stderr && + test_i18ngrep "ignoring invalid credential" stderr +' + +test_expect_success 'get: store file can contain empty/bogus lines' ' + echo "" > "$HOME/.git-credentials" && + q_to_tab <<-\CONFIG >>"$HOME/.git-credentials" && + #comment + Q + https://user:pass@example.com + CONFIG + cat >expect-stdout <<-\STDOUT && + protocol=https + host=example.com + username=user + password=pass + STDOUT + test_config credential.helper store && + git credential fill <<-\EOF >stdout 2>stderr && + protocol=https + host=example.com + EOF + test_cmp expect-stdout stdout && + test_i18ngrep "ignoring invalid credential" stderr && + test_line_count = 3 stderr +' + test_done
-- 2.26.2.569.g1d74ac4d14