[PATCH v3 2/2] credential: erase all matching credentials

From

M Hickford via GitGitGadget <gitgitgadget@gmail.com>

Date

Jun 15, 2023, 06:03 UTC

Message-ID

<e06d80e99a00c30fb8430afcd457576bb0bf9ce5.1686809004.git.gitgitgadget@gmail.com>

In-Reply-To

<pull.1525.v3.git.git.1686809004.gitgitgadget@gmail.com>

From: M Hickford <mirth.hickford@gmail.com>

Fix credential-cache and credential-store.

Signed-off-by: M Hickford <mirth.hickford@gmail.com>
---
 Documentation/git-credential.txt   |  2 +-
 Documentation/gitcredentials.txt   |  2 +-
 builtin/credential-cache--daemon.c | 15 ++++++++------
 builtin/credential-store.c         |  1 -
 t/lib-credential.sh                | 33 ++++++++++++++++++++++++++++++
 5 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/Documentation/git-credential.txt b/Documentation/git-credential.txt
index 0e6d9e85ec7..a220afed4f3 100644
--- a/Documentation/git-credential.txt
+++ b/Documentation/git-credential.txt
@@ -39,7 +39,7 @@ for later use.
 
 If the action is `reject`, git-credential will send the description to
 any configured credential helpers, which may erase any stored
-credential matching the description.
+credentials matching the description.
 
 If the action is `approve` or `reject`, no output should be emitted.
 
diff --git a/Documentation/gitcredentials.txt b/Documentation/gitcredentials.txt
index 100f045bb1a..65d652dc40e 100644
--- a/Documentation/gitcredentials.txt
+++ b/Documentation/gitcredentials.txt
@@ -260,7 +260,7 @@ appended to its command line, which is one of:
 
 `erase`::
 
-	Remove a matching credential, if any, from the helper's storage.
+	Remove matching credentials, if any, from the helper's storage.
 
 The details of the credential will be provided on the helper's stdin
 stream. The exact format is the same as the input/output format of the
diff --git a/builtin/credential-cache--daemon.c b/builtin/credential-cache--daemon.c
index f64dd21d335..dc1cf2d25fc 100644
--- a/builtin/credential-cache--daemon.c
+++ b/builtin/credential-cache--daemon.c
@@ -33,12 +33,12 @@ static void cache_credential(struct credential *c, int timeout)
 	e->expiration = time(NULL) + timeout;
 }
 
-static struct credential_cache_entry *lookup_credential(const struct credential *c, int match_password)
+static struct credential_cache_entry *lookup_credential(const struct credential *c)
 {
 	int i;
 	for (i = 0; i < entries_nr; i++) {
 		struct credential *e = &entries[i].item;
-		if (credential_match(c, e, match_password))
+		if (credential_match(c, e, 0))
 			return &entries[i];
 	}
 	return NULL;
@@ -48,9 +48,12 @@ static void remove_credential(const struct credential *c, int match_password)
 {
 	struct credential_cache_entry *e;
 
-	e = lookup_credential(c, match_password);
-	if (e)
-		e->expiration = 0;
+	int i;
+	for (i = 0; i < entries_nr; i++) {
+		e = &entries[i];
+		if (credential_match(c, &e->item, match_password))
+			e->expiration = 0;
+	}
 }
 
 static timestamp_t check_expirations(void)
@@ -127,7 +130,7 @@ static void serve_one_client(FILE *in, FILE *out)
 	if (read_request(in, &c, &action, &timeout) < 0)
 		/* ignore error */ ;
 	else if (!strcmp(action.buf, "get")) {
-		struct credential_cache_entry *e = lookup_credential(&c, 0);
+		struct credential_cache_entry *e = lookup_credential(&c);
 		if (e) {
 			fprintf(out, "username=%s\n", e->item.username);
 			fprintf(out, "password=%s\n", e->item.password);
diff --git a/builtin/credential-store.c b/builtin/credential-store.c
index f80ff59f18a..06bbfa4dd03 100644
--- a/builtin/credential-store.c
+++ b/builtin/credential-store.c
@@ -35,7 +35,6 @@ static int parse_credential_file(const char *fn,
 			found_credential = 1;
 			if (match_cb) {
 				match_cb(&entry);
-				break;
 			}
 		}
 		else if (other_cb)
diff --git a/t/lib-credential.sh b/t/lib-credential.sh
index 7b4fdd011d7..3f21ba66929 100644
--- a/t/lib-credential.sh
+++ b/t/lib-credential.sh
@@ -45,6 +45,8 @@ helper_test_clean() {
 	reject $1 https example.com user2
 	reject $1 https example.com user4
 	reject $1 https example.com user5
+	reject $1 https example.com user6
+	reject $1 https example.com user7
 	reject $1 https example.com user8
 	reject $1 http path.tld user
 	reject $1 https timeout.tld user
@@ -342,6 +344,37 @@ helper_test() {
 		EOF
 	'
 
+	test_expect_success "helper ($HELPER) erases all matching credentials" '
+		check approve $HELPER <<-\EOF &&
+		protocol=https
+		host=example.com
+		username=user6
+		password=pass1
+		EOF
+		check approve $HELPER <<-\EOF &&
+		protocol=https
+		host=example.com
+		username=user7
+		password=pass1
+		EOF
+		check reject $HELPER <<-\EOF &&
+		protocol=https
+		host=example.com
+		EOF
+		check fill $HELPER <<-\EOF
+		protocol=https
+		host=example.com
+		--
+		protocol=https
+		host=example.com
+		username=askpass-username
+		password=askpass-password
+		--
+		askpass: Username for '\''https://example.com'\'':
+		askpass: Password for '\''https://askpass-username@example.com'\'':
+		EOF
+	'
+
 	: ${GIT_TEST_LONG_CRED_BUFFER:=1024}
 	# 23 bytes accounts for "wwwauth[]=basic realm=" plus NUL
 	LONG_VALUE_LEN=$((GIT_TEST_LONG_CRED_BUFFER - 23))

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