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-rw-r--r--daemon.c132
1 files changed, 107 insertions, 25 deletions
diff --git a/daemon.c b/daemon.c
index 30747075f0..9d2e0d20ef 100644
--- a/daemon.c
+++ b/daemon.c
@@ -9,7 +9,12 @@
#define initgroups(x, y) (0) /* nothing */
#endif
-static int log_syslog;
+static enum log_destination {
+ LOG_DESTINATION_UNSET = -1,
+ LOG_DESTINATION_NONE = 0,
+ LOG_DESTINATION_STDERR = 1,
+ LOG_DESTINATION_SYSLOG = 2,
+} log_destination = LOG_DESTINATION_UNSET;
static int verbose;
static int reuseaddr;
static int informative_errors;
@@ -25,6 +30,7 @@ static const char daemon_usage[] =
" [--access-hook=<path>]\n"
" [--inetd | [--listen=<host_or_ipaddr>] [--port=<n>]\n"
" [--detach] [--user=<user> [--group=<group>]]\n"
+" [--log-destination=(stderr|syslog|none)]\n"
" [<directory>...]";
/* List of acceptable pathname prefixes */
@@ -74,11 +80,14 @@ static const char *get_ip_address(struct hostinfo *hi)
static void logreport(int priority, const char *err, va_list params)
{
- if (log_syslog) {
+ switch (log_destination) {
+ case LOG_DESTINATION_SYSLOG: {
char buf[1024];
vsnprintf(buf, sizeof(buf), err, params);
syslog(priority, "%s", buf);
- } else {
+ break;
+ }
+ case LOG_DESTINATION_STDERR:
/*
* Since stderr is set to buffered mode, the
* logging of different processes will not overlap
@@ -88,6 +97,11 @@ static void logreport(int priority, const char *err, va_list params)
vfprintf(stderr, err, params);
fputc('\n', stderr);
fflush(stderr);
+ break;
+ case LOG_DESTINATION_NONE:
+ break;
+ case LOG_DESTINATION_UNSET:
+ BUG("log destination not initialized correctly");
}
}
@@ -282,7 +296,7 @@ static const char *path_ok(const char *directory, struct hostinfo *hi)
return NULL; /* Fallthrough. Deny by default */
}
-typedef int (*daemon_service_fn)(void);
+typedef int (*daemon_service_fn)(const struct argv_array *env);
struct daemon_service {
const char *name;
const char *config_name;
@@ -363,7 +377,7 @@ error_return:
}
static int run_service(const char *dir, struct daemon_service *service,
- struct hostinfo *hi)
+ struct hostinfo *hi, const struct argv_array *env)
{
const char *path;
int enabled = service->enabled;
@@ -422,7 +436,7 @@ static int run_service(const char *dir, struct daemon_service *service,
*/
signal(SIGTERM, SIG_IGN);
- return service->fn();
+ return service->fn(env);
}
static void copy_to_log(int fd)
@@ -462,25 +476,34 @@ static int run_service_command(struct child_process *cld)
return finish_command(cld);
}
-static int upload_pack(void)
+static int upload_pack(const struct argv_array *env)
{
struct child_process cld = CHILD_PROCESS_INIT;
argv_array_pushl(&cld.args, "upload-pack", "--strict", NULL);
argv_array_pushf(&cld.args, "--timeout=%u", timeout);
+
+ argv_array_pushv(&cld.env_array, env->argv);
+
return run_service_command(&cld);
}
-static int upload_archive(void)
+static int upload_archive(const struct argv_array *env)
{
struct child_process cld = CHILD_PROCESS_INIT;
argv_array_push(&cld.args, "upload-archive");
+
+ argv_array_pushv(&cld.env_array, env->argv);
+
return run_service_command(&cld);
}
-static int receive_pack(void)
+static int receive_pack(const struct argv_array *env)
{
struct child_process cld = CHILD_PROCESS_INIT;
argv_array_push(&cld.args, "receive-pack");
+
+ argv_array_pushv(&cld.env_array, env->argv);
+
return run_service_command(&cld);
}
@@ -573,8 +596,11 @@ static void canonicalize_client(struct strbuf *out, const char *in)
/*
* Read the host as supplied by the client connection.
+ *
+ * Returns a pointer to the character after the NUL byte terminating the host
+ * arguemnt, or 'extra_args' if there is no host arguemnt.
*/
-static void parse_host_arg(struct hostinfo *hi, char *extra_args, int buflen)
+static char *parse_host_arg(struct hostinfo *hi, char *extra_args, int buflen)
{
char *val;
int vallen;
@@ -585,6 +611,7 @@ static void parse_host_arg(struct hostinfo *hi, char *extra_args, int buflen)
if (strncasecmp("host=", extra_args, 5) == 0) {
val = extra_args + 5;
vallen = strlen(val) + 1;
+ loginfo("Extended attribute \"host\": %s", val);
if (*val) {
/* Split <host>:<port> at colon. */
char *host;
@@ -602,6 +629,45 @@ static void parse_host_arg(struct hostinfo *hi, char *extra_args, int buflen)
if (extra_args < end && *extra_args)
die("Invalid request");
}
+
+ return extra_args;
+}
+
+static void parse_extra_args(struct hostinfo *hi, struct argv_array *env,
+ char *extra_args, int buflen)
+{
+ const char *end = extra_args + buflen;
+ struct strbuf git_protocol = STRBUF_INIT;
+
+ /* First look for the host argument */
+ extra_args = parse_host_arg(hi, extra_args, buflen);
+
+ /* Look for additional arguments places after a second NUL byte */
+ for (; extra_args < end; extra_args += strlen(extra_args) + 1) {
+ const char *arg = extra_args;
+
+ /*
+ * Parse the extra arguments, adding most to 'git_protocol'
+ * which will be used to set the 'GIT_PROTOCOL' envvar in the
+ * service that will be run.
+ *
+ * If there ends up being a particular arg in the future that
+ * git-daemon needs to parse specificly (like the 'host' arg)
+ * then it can be parsed here and not added to 'git_protocol'.
+ */
+ if (*arg) {
+ if (git_protocol.len > 0)
+ strbuf_addch(&git_protocol, ':');
+ strbuf_addstr(&git_protocol, arg);
+ }
+ }
+
+ if (git_protocol.len > 0) {
+ loginfo("Extended attribute \"protocol\": %s", git_protocol.buf);
+ argv_array_pushf(env, GIT_PROTOCOL_ENVIRONMENT "=%s",
+ git_protocol.buf);
+ }
+ strbuf_release(&git_protocol);
}
/*
@@ -695,6 +761,7 @@ static int execute(void)
int pktlen, len, i;
char *addr = getenv("REMOTE_ADDR"), *port = getenv("REMOTE_PORT");
struct hostinfo hi;
+ struct argv_array env = ARGV_ARRAY_INIT;
hostinfo_init(&hi);
@@ -707,17 +774,12 @@ static int execute(void)
alarm(0);
len = strlen(line);
- if (pktlen != len)
- loginfo("Extended attributes (%d bytes) exist <%.*s>",
- (int) pktlen - len,
- (int) pktlen - len, line + len + 1);
- if (len && line[len-1] == '\n') {
- line[--len] = 0;
- pktlen--;
- }
+ if (len && line[len-1] == '\n')
+ line[len-1] = 0;
+ /* parse additional args hidden behind a NUL byte */
if (len != pktlen)
- parse_host_arg(&hi, line + len + 1, pktlen - len - 1);
+ parse_extra_args(&hi, &env, line + len + 1, pktlen - len - 1);
for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
struct daemon_service *s = &(daemon_service[i]);
@@ -730,13 +792,15 @@ static int execute(void)
* Note: The directory here is probably context sensitive,
* and might depend on the actual service being performed.
*/
- int rc = run_service(arg, s, &hi);
+ int rc = run_service(arg, s, &hi, &env);
hostinfo_clear(&hi);
+ argv_array_clear(&env);
return rc;
}
}
hostinfo_clear(&hi);
+ argv_array_clear(&env);
logerror("Protocol error: '%s'", line);
return -1;
}
@@ -1236,7 +1300,6 @@ int cmd_main(int argc, const char **argv)
}
if (!strcmp(arg, "--inetd")) {
inetd_mode = 1;
- log_syslog = 1;
continue;
}
if (!strcmp(arg, "--verbose")) {
@@ -1244,9 +1307,22 @@ int cmd_main(int argc, const char **argv)
continue;
}
if (!strcmp(arg, "--syslog")) {
- log_syslog = 1;
+ log_destination = LOG_DESTINATION_SYSLOG;
continue;
}
+ if (skip_prefix(arg, "--log-destination=", &v)) {
+ if (!strcmp(v, "syslog")) {
+ log_destination = LOG_DESTINATION_SYSLOG;
+ continue;
+ } else if (!strcmp(v, "stderr")) {
+ log_destination = LOG_DESTINATION_STDERR;
+ continue;
+ } else if (!strcmp(v, "none")) {
+ log_destination = LOG_DESTINATION_NONE;
+ continue;
+ } else
+ die("unknown log destination '%s'", v);
+ }
if (!strcmp(arg, "--export-all")) {
export_all_trees = 1;
continue;
@@ -1303,7 +1379,6 @@ int cmd_main(int argc, const char **argv)
}
if (!strcmp(arg, "--detach")) {
detach = 1;
- log_syslog = 1;
continue;
}
if (skip_prefix(arg, "--user=", &v)) {
@@ -1349,7 +1424,14 @@ int cmd_main(int argc, const char **argv)
usage(daemon_usage);
}
- if (log_syslog) {
+ if (log_destination == LOG_DESTINATION_UNSET) {
+ if (inetd_mode || detach)
+ log_destination = LOG_DESTINATION_SYSLOG;
+ else
+ log_destination = LOG_DESTINATION_STDERR;
+ }
+
+ if (log_destination == LOG_DESTINATION_SYSLOG) {
openlog("git-daemon", LOG_PID, LOG_DAEMON);
set_die_routine(daemon_die);
} else
@@ -1377,7 +1459,7 @@ int cmd_main(int argc, const char **argv)
die("base-path '%s' does not exist or is not a directory",
base_path);
- if (inetd_mode) {
+ if (log_destination != LOG_DESTINATION_STDERR) {
if (!freopen("/dev/null", "w", stderr))
die_errno("failed to redirect stderr to /dev/null");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 09:16:50 +0000