Move kms client and server to separate directories

1 files changed, 0 insertions, 245 deletions

diff --git a/src/kms/kms_client.c b/src/kms/kms_client.c
deleted file mode 100644
index cddd8ff..0000000
--- a/src/kms/kms_client.c
+++ /dev/null
@@ -1,245 +0,0 @@
-#include "../../include/kms/kms_client.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <signal.h>
-#include <limits.h>
-#include <stdbool.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/wait.h>
-#include <sys/capability.h>
-
-static bool is_inside_flatpak(void) {
-    return getenv("FLATPAK_ID") != NULL;
-}
-
-static int send_msg_to_server(int server_fd, gsr_kms_request *request) {
-    struct iovec iov;
-    iov.iov_base = request;
-    iov.iov_len = sizeof(*request);
-
-    struct msghdr request_message = {0};
-    request_message.msg_iov = &iov;
-    request_message.msg_iovlen = 1;
-
-    return sendmsg(server_fd, &request_message, 0);
-}
-
-static int recv_msg_from_server(int server_fd, gsr_kms_response *response) {
-    struct iovec iov;
-    iov.iov_base = response;
-    iov.iov_len = sizeof(*response);
-
-    struct msghdr response_message = {0};
-    response_message.msg_iov = &iov;
-    response_message.msg_iovlen = 1;
-
-    char cmsgbuf[CMSG_SPACE(sizeof(int))];
-    memset(cmsgbuf, 0, sizeof(cmsgbuf));
-    response_message.msg_control = cmsgbuf;
-    response_message.msg_controllen = sizeof(cmsgbuf);
-
-    int res = recvmsg(server_fd, &response_message, MSG_WAITALL);
-    if(res <= 0)
-        return res;
-
-    if(response->result == KMS_RESULT_OK)
-        response->data.fd.fd = 0;
-
-    struct cmsghdr *cmsg = CMSG_FIRSTHDR(&response_message);
-    if(cmsg) {
-        fprintf(stderr, "got cmsg, %d\n", cmsg->cmsg_type);
-        if(cmsg->cmsg_type == SCM_RIGHTS) {
-            int kms_fd = 0;
-            memcpy(&kms_fd, CMSG_DATA(cmsg), sizeof(int));
-            fprintf(stderr, "kms fd: %d\n", kms_fd);
-            response->data.fd.fd = kms_fd;
-        }
-    }
-
-    return res;
-}
-
-int gsr_kms_client_init(gsr_kms_client *self, const char *card_path, const char *program_dir) {
-    self->kms_server_pid = -1;
-    self->card_path = NULL;
-    self->socket_fd = -1;
-    self->client_fd = -1;
-    self->socket_path[0] = '\0';
-    struct sockaddr_un local_addr = {0};
-    struct sockaddr_un remote_addr = {0};
-
-    bool inside_flatpak = is_inside_flatpak();
-    char server_filepath[PATH_MAX];
-    snprintf(server_filepath, sizeof(server_filepath), "%s/%s", program_dir, "gsr-kms-server");
-    if(access(server_filepath, F_OK) != 0 || inside_flatpak)
-        snprintf(server_filepath, sizeof(server_filepath), "gsr-kms-server"); // Assume gsr-kms-server is in $PATH
-
-    bool has_perm = 0;
-    if(geteuid() == 0) {
-        has_perm = true;
-    } else {
-        cap_t kms_server_cap = cap_get_file(server_filepath);
-        if(kms_server_cap) {
-            cap_flag_value_t res = 0;
-            cap_get_flag(kms_server_cap, CAP_SYS_ADMIN, CAP_PERMITTED, &res);
-            if(res == CAP_SET) {
-                //fprintf(stderr, "has permission!\n");
-                has_perm = true;
-            } else {
-                //fprintf(stderr, "No permission:(\n");
-            }
-            cap_free(kms_server_cap);
-        } else {
-            if(errno == ENODATA)
-                fprintf(stderr, "gsr info: gsr_kms_client_init: gsr-kms-server is missing sys_admin cap and will require root authentication. To bypass this automatically, run: sudo setcap cap_sys_admin+ep '%s'\n", server_filepath);
-            else
-                fprintf(stderr, "gsr info: gsr_kms_client_init: failed to get cap\n");
-        }
-    }
-
-    fprintf(stderr, "gsr info: gsr server path: %s, exists: %s\n", server_filepath, access(server_filepath, F_OK) == 0 ? "yes" : "no");
-
-    self->card_path = strdup(card_path);
-    if(!self->card_path) {
-        fprintf(stderr, "gsr error: gsr_kms_client_init: failed to duplicate card_path\n");
-        goto err;
-    }
-
-    strcpy(self->socket_path, "/tmp/gsr-kms-socket-XXXXXX");
-    if(!tmpnam(self->socket_path)) {
-        fprintf(stderr, "gsr error: gsr_kms_client_init: mkstemp failed, error: %s\n", strerror(errno));
-        goto err;
-    }
-
-    self->socket_fd = socket(AF_UNIX, SOCK_STREAM, 0);
-    if(self->socket_fd == -1) {
-        fprintf(stderr, "gsr error: gsr_kms_client_init: socket failed, error: %s\n", strerror(errno));
-        goto err;
-    }
-
-    local_addr.sun_family = AF_UNIX;
-    strncpy(local_addr.sun_path, self->socket_path, sizeof(local_addr.sun_path));
-    if(bind(self->socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path)) == -1) {
-        fprintf(stderr, "gsr error: gsr_kms_client_init: failed to bind socket, error: %s\n", strerror(errno));
-        goto err;
-    }
-
-    if(listen(self->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));
-        goto err;
-    } else if(pid == 0) { /* child */
-        if(has_perm) {
-            const char *args[] = { server_filepath, self->socket_path, NULL };
-            execvp(args[0], (char *const*)args);
-        } else if(inside_flatpak) {
-            const char *args[] = { "flatpak-spawn", "--host", "pkexec", server_filepath, self->socket_path, NULL };
-            execvp(args[0], (char *const*)args);
-        } else {
-            const char *args[] = { "pkexec", server_filepath, self->socket_path, NULL };
-            execvp(args[0], (char *const*)args);
-        }
-        perror("execvp");
-        _exit(127);
-    } else { /* parent */
-        self->kms_server_pid = pid;
-    }
-
-    fprintf(stderr, "gsr info: gsr_kms_client_init: waiting for client to connect\n");
-    for(;;) {
-        struct timeval tv;
-        fd_set rfds;
-        FD_ZERO(&rfds);
-        FD_SET(self->socket_fd, &rfds);
-
-        tv.tv_sec = 0;
-        tv.tv_usec = 100 * 1000; // 100 ms
-
-        int select_res = select(1 + self->socket_fd, &rfds, NULL, NULL, &tv);
-        if(select_res > 0) {
-            socklen_t sock_len = 0;
-            self->client_fd = accept(self->socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
-            if(self->client_fd == -1) {
-                fprintf(stderr, "gsr error: gsr_kms_client_init: accept failed on socket, error: %s\n", strerror(errno));
-                goto err;
-            }
-            break;
-        } else {
-            int status;
-            int wait_result = waitpid(self->kms_server_pid, &status, WNOHANG);
-            if(wait_result != 0) {
-                fprintf(stderr, "gsr error: gsr_kms_client_init: kms server died or never started, error: %s\n", strerror(errno));
-                goto err;
-            }
-        }
-    }
-    fprintf(stderr, "gsr info: gsr_kms_client_init: client connected\n");
-
-    return 0;
-
-    err:
-    gsr_kms_client_deinit(self);
-    return -1;
-}
-
-void gsr_kms_client_deinit(gsr_kms_client *self) {
-    if(self->card_path) {
-        free(self->card_path);
-        self->card_path = NULL;
-    }
-
-    if(self->client_fd != -1) {
-        close(self->client_fd);
-        self->client_fd = -1;
-    }
-
-    if(self->socket_fd != -1) {
-        close(self->socket_fd);
-        self->socket_fd = -1;
-    }
-
-    if(self->kms_server_pid != -1) {
-        kill(self->kms_server_pid, SIGINT);
-        int status;
-        waitpid(self->kms_server_pid, &status, 0);
-        self->kms_server_pid = -1;
-    }
-
-    if(self->socket_path[0] != '\0') {
-        remove(self->socket_path);
-        self->socket_path[0] = '\0';
-    }
-}
-
-int gsr_kms_client_get_kms(gsr_kms_client *self, gsr_kms_response *response) {
-    response->result = KMS_RESULT_FAILED_TO_SEND;
-    strcpy(response->data.err_msg, "failed to send");
-
-    gsr_kms_request request;
-    request.type = KMS_REQUEST_TYPE_GET_KMS;
-    strcpy(request.data.card_path, self->card_path);
-    if(send_msg_to_server(self->client_fd, &request) == -1) {
-        fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to send request message to server\n");
-        return -1;
-    }
-
-    const int recv_res = recv_msg_from_server(self->client_fd, response);
-    if(recv_res == 0) {
-        fprintf(stderr, "gsr warning: gsr_kms_client_get_kms: kms server shut down\n");
-        return -1;
-    } else if(recv_res == -1) {
-        fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to receive response\n");
-        return -1;
-    }
-
-    return 0;
-}