This adds an infrastructure to selectively enable and disable
more than one services in git-daemon. Currently upload-pack
service, which serves the git-fetch-pack and git-peek-remote
clients, is the only service that is defined.
Signed-off-by: Junio C Hamano <junkio@xxxxxxx>
---
daemon.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 106 insertions(+), 7 deletions(-)
diff --git a/daemon.c b/daemon.c
index 012936f..0a6cbb4 100644
--- a/daemon.c
+++ b/daemon.c
@@ -229,13 +229,42 @@ static char *path_ok(char *dir)
return NULL; /* Fallthrough. Deny by default */
}
-static int upload(char *dir)
+typedef int (*daemon_service_fn)(void);
+struct daemon_service {
+ const char *name;
+ const char *config_name;
+ daemon_service_fn fn;
+ int enabled;
+ int overridable;
+};
+
+static struct daemon_service *service_looking_at;
+static int service_enabled;
+
+static int git_daemon_config(const char *var, const char *value)
+{
+ if (!strncmp(var, "daemon.", 7) &&
+ !strcmp(var + 7, service_looking_at->config_name)) {
+ service_enabled = git_config_bool(var, value);
+ return 0;
+ }
+
+ /* we are not interested in parsing any other configuration here */
+ return 0;
+}
+
+static int run_service(char *dir, struct daemon_service *service)
{
- /* Timeout as string */
- char timeout_buf[64];
const char *path;
+ int enabled = service->enabled;
+
+ loginfo("Request %s for '%s'", service->name, dir);
- loginfo("Request for '%s'", dir);
+ if (!enabled && !service->overridable) {
+ logerror("'%s': service not enabled.", service->name);
+ errno = EACCES;
+ return -1;
+ }
if (!(path = path_ok(dir)))
return -1;
@@ -257,12 +286,34 @@ static int upload(char *dir)
return -1;
}
+ if (service->overridable) {
+ service_looking_at = service;
+ service_enabled = -1;
+ git_config(git_daemon_config);
+ if (0 <= service_enabled)
+ enabled = service_enabled;
+ }
+ if (!enabled) {
+ logerror("'%s': service not enabled for '%s'",
+ service->name, path);
+ errno = EACCES;
+ return -1;
+ }
+
/*
* We'll ignore SIGTERM from now on, we have a
* good client.
*/
signal(SIGTERM, SIG_IGN);
+ return service->fn();
+}
+
+static int upload_pack(void)
+{
+ /* Timeout as string */
+ char timeout_buf[64];
+
snprintf(timeout_buf, sizeof timeout_buf, "--timeout=%u", timeout);
/* git-upload-pack only ever reads stuff, so this is safe */
@@ -270,10 +321,36 @@ static int upload(char *dir)
return -1;
}
+static struct daemon_service daemon_service[] = {
+ { "upload-pack", "uploadpack", upload_pack, 1, 1 },
+};
+
+static void enable_service(const char *name, int ena) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
+ if (!strcmp(daemon_service[i].name, name)) {
+ daemon_service[i].enabled = ena;
+ return;
+ }
+ }
+ die("No such service %s", name);
+}
+
+static void make_service_overridable(const char *name, int ena) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
+ if (!strcmp(daemon_service[i].name, name)) {
+ daemon_service[i].overridable = ena;
+ return;
+ }
+ }
+ die("No such service %s", name);
+}
+
static int execute(struct sockaddr *addr)
{
static char line[1000];
- int pktlen, len;
+ int pktlen, len, i;
if (addr) {
char addrbuf[256] = "";
@@ -310,8 +387,14 @@ #endif
if (len && line[len-1] == '\n')
line[--len] = 0;
- if (!strncmp("git-upload-pack ", line, 16))
- return upload(line+16);
+ for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
+ struct daemon_service *s = &(daemon_service[i]);
+ int namelen = strlen(s->name);
+ if (!strncmp("git-", line, 4) &&
+ !strncmp(s->name, line + 4, namelen) &&
+ line[namelen + 4] == ' ')
+ return run_service(line + namelen + 5, s);
+ }
logerror("Protocol error: '%s'", line);
return -1;
@@ -791,6 +874,22 @@ int main(int argc, char **argv)
log_syslog = 1;
continue;
}
+ if (!strncmp(arg, "--enable=", 9)) {
+ enable_service(arg + 9, 1);
+ continue;
+ }
+ if (!strncmp(arg, "--disable=", 10)) {
+ enable_service(arg + 10, 0);
+ continue;
+ }
+ if (!strncmp(arg, "--enable-override=", 18)) {
+ make_service_overridable(arg + 18, 1);
+ continue;
+ }
+ if (!strncmp(arg, "--disable-override=", 19)) {
+ make_service_overridable(arg + 19, 0);
+ continue;
+ }
if (!strcmp(arg, "--")) {
ok_paths = &argv[i+1];
break;
--
1.4.2.g0cac8
-
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