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credential: use the last matching username in the config 

Everywhere else in the codebase, we use the rule that the last matching
configuration option is the one that takes effect.  This is helpful
because it allows more specific configuration settings (e.g., per-repo
configuration) to override less specific settings (e.g., per-user
configuration).

However, in the credential code, we didn't honor this setting, and
instead picked the first setting we had, and stuck with it.  This was
likely to ensure we picked the value from the URL, which we want to
honor over the configuration.

It's possible to do both, though, so let's check if the value is the one
we've gotten over our protocol connection, which if present will have
come from the URL, and keep it if so.  Otherwise, let's overwrite the
value with the latest version we've got from the configuration, so we
keep the last configuration value.

Signed-off-by: brian m. carlson <bk2204@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson 2020-02-20 02:24:12 +00:00 committed by Junio C Hamano
parent 588c70e10f
commit 82eb249853
3 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
credential.c
View File

@ -71,8 +71,10 @@ static int credential_config_callback(const char *var, const char *value,
else
string_list_clear(&c->helpers, 0);
} else if (!strcmp(key, "username")) {
if (!c->username)
if (!c->username_from_proto) {
free(c->username);
c->username = xstrdup(value);
}
}
else if (!strcmp(key, "usehttppath"))
c->use_http_path = git_config_bool(var, value);
@ -163,6 +165,7 @@ int credential_read(struct credential *c, FILE *fp)
if (!strcmp(key, "username")) {
free(c->username);
c->username = xstrdup(value);
c->username_from_proto = 1;
} else if (!strcmp(key, "password")) {
free(c->password);
c->password = xstrdup(value);
@ -349,10 +352,14 @@ void credential_from_url(struct credential *c, const char *url)
else if (!colon || at <= colon) {
/* Case (2) */
c->username = url_decode_mem(cp, at - cp);
if (c->username && *c->username)
c->username_from_proto = 1;
host = at + 1;
} else {
/* Case (3) */
c->username = url_decode_mem(cp, colon - cp);
if (c->username && *c->username)
c->username_from_proto = 1;
c->password = url_decode_mem(colon + 1, at - (colon + 1));
host = at + 1;
}

3
credential.h
View File

@ -208,7 +208,8 @@ struct credential {
unsigned approved:1,
configured:1,
quit:1,
use_http_path:1;
use_http_path:1,
username_from_proto:1;
char *username;
char *password;

2
t/t0300-credentials.sh
View File

@ -344,7 +344,7 @@ test_expect_success 'honors username from URL over helper (components)' '
EOF
'
test_expect_failure 'last matching username wins' '
test_expect_success 'last matching username wins' '
test_config credential.https://example.com/path.git.username bob &&
test_config credential.https://example.com.username alice &&
test_config credential.https://example.com.helper "verbatim \"\" bar" &&