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Diffstat (limited to 'kms/client')
-rw-r--r--kms/client/kms_client.c94
-rw-r--r--kms/client/kms_client.h1
2 files changed, 54 insertions, 41 deletions
diff --git a/kms/client/kms_client.c b/kms/client/kms_client.c
index 05cf8d7..0b28b48 100644
--- a/kms/client/kms_client.c
+++ b/kms/client/kms_client.c
@@ -174,10 +174,12 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
int result = -1;
self->kms_server_pid = -1;
self->initial_socket_fd = -1;
+ self->initial_client_fd = -1;
self->initial_socket_path[0] = '\0';
self->socket_pair[0] = -1;
self->socket_pair[1] = -1;
struct sockaddr_un local_addr = {0};
+ struct sockaddr_un remote_addr = {0};
if(!create_socket_path(self->initial_socket_path, sizeof(self->initial_socket_path))) {
fprintf(stderr, "gsr error: gsr_kms_client_init: failed to create path to kms socket\n");
@@ -229,6 +231,20 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
local_addr.sun_family = AF_UNIX;
strncpy_safe(local_addr.sun_path, self->initial_socket_path, sizeof(local_addr.sun_path));
+ const mode_t prev_mask = umask(0000);
+ int bind_res = bind(self->initial_socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path));
+ umask(prev_mask);
+
+ if(bind_res == -1) {
+ fprintf(stderr, "gsr error: gsr_kms_client_init: failed to bind socket, error: %s\n", strerror(errno));
+ goto err;
+ }
+
+ if(listen(self->initial_socket_fd, 1) == -1) {
+ fprintf(stderr, "gsr error: gsr_kms_client_init: failed to listen on socket, error: %s\n", strerror(errno));
+ goto err;
+ }
+
pid_t pid = fork();
if(pid == -1) {
fprintf(stderr, "gsr error: gsr_kms_client_init: fork failed, error: %s\n", strerror(errno));
@@ -255,50 +271,41 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
self->kms_server_pid = pid;
}
- fprintf(stderr, "gsr info: connecting to the server\n");
- bool connected = false;
- while(true) {
- struct sockaddr_un remote_addr = {0};
- remote_addr.sun_family = AF_UNIX;
- strncpy_safe(remote_addr.sun_path, self->initial_socket_path, sizeof(remote_addr.sun_path));
- // TODO: Check if parent disconnected
- if(connect(self->initial_socket_fd, (struct sockaddr*)&remote_addr, sizeof(remote_addr.sun_family) + strlen(remote_addr.sun_path)) == -1) {
- if(errno == ECONNREFUSED || errno == ENOENT) {
- goto next;
- } else if(errno == EISCONN) {
- connected = true;
- break;
+ fprintf(stderr, "gsr info: gsr_kms_client_init: waiting for server to connect\n");
+ for(;;) {
+ struct timeval tv;
+ fd_set rfds;
+ FD_ZERO(&rfds);
+ FD_SET(self->initial_socket_fd, &rfds);
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 100 * 1000; // 100 ms
+
+ int select_res = select(1 + self->initial_socket_fd, &rfds, NULL, NULL, &tv);
+ if(select_res > 0) {
+ socklen_t sock_len = 0;
+ self->initial_client_fd = accept(self->initial_socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
+ if(self->initial_client_fd == -1) {
+ fprintf(stderr, "gsr error: gsr_kms_client_init: accept failed on socket, error: %s\n", strerror(errno));
+ goto err;
}
-
- fprintf(stderr, "gsr error: gsr_kms_client_init: connect failed, error: %s (%d)\n", strerror(errno), errno);
- goto err;
- }
-
- next:
- if(connected)
break;
-
- int status = 0;
- int wait_result = waitpid(self->kms_server_pid, &status, WNOHANG);
- if(wait_result != 0) {
- int exit_code = -1;
- if(WIFEXITED(status))
- exit_code = WEXITSTATUS(status);
- fprintf(stderr, "gsr error: gsr_kms_client_init: kms server died or never started, exit code: %d\n", exit_code);
- self->kms_server_pid = -1;
- if(exit_code != 0)
- result = exit_code;
- goto err;
+ } else {
+ int status = 0;
+ int wait_result = waitpid(self->kms_server_pid, &status, WNOHANG);
+ if(wait_result != 0) {
+ int exit_code = -1;
+ if(WIFEXITED(status))
+ exit_code = WEXITSTATUS(status);
+ fprintf(stderr, "gsr error: gsr_kms_client_init: kms server died or never started, exit code: %d\n", exit_code);
+ self->kms_server_pid = -1;
+ if(exit_code != 0)
+ result = exit_code;
+ goto err;
+ }
}
- usleep(30 * 1000); // 30 milliseconds
- }
-
- if(connected) {
- fprintf(stderr, "gsr info: connected to the server\n");
- } else {
- fprintf(stderr, "gsr error: gsr_kms_client_init: failed to connect to the server\n");
- goto err;
}
+ fprintf(stderr, "gsr info: gsr_kms_client_init: server connected\n");
fprintf(stderr, "gsr info: replacing file-backed unix domain socket with socketpair\n");
if(gsr_kms_client_replace_connection(self) != 0)
@@ -315,6 +322,11 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
}
void cleanup_socket(gsr_kms_client *self, bool kill_server) {
+ if(self->initial_client_fd != -1) {
+ close(self->initial_client_fd);
+ self->initial_client_fd = -1;
+ }
+
if(self->initial_socket_fd != -1) {
close(self->initial_socket_fd);
self->initial_socket_fd = -1;
@@ -354,7 +366,7 @@ int gsr_kms_client_replace_connection(gsr_kms_client *self) {
request.version = GSR_KMS_PROTOCOL_VERSION;
request.type = KMS_REQUEST_TYPE_REPLACE_CONNECTION;
request.new_connection_fd = self->socket_pair[GSR_SOCKET_PAIR_REMOTE];
- if(send_msg_to_server(self->initial_socket_fd, &request) == -1) {
+ if(send_msg_to_server(self->initial_client_fd, &request) == -1) {
fprintf(stderr, "gsr error: gsr_kms_client_replace_connection: failed to send request message to server\n");
return -1;
}
diff --git a/kms/client/kms_client.h b/kms/client/kms_client.h
index 27caca2..02f2dd1 100644
--- a/kms/client/kms_client.h
+++ b/kms/client/kms_client.h
@@ -8,6 +8,7 @@
typedef struct {
pid_t kms_server_pid;
int initial_socket_fd;
+ int initial_client_fd;
char initial_socket_path[PATH_MAX];
int socket_pair[2];
} gsr_kms_client;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 06:08:17 +0000