wip

src/server.c

@@ -0,0 +1,118 @@
+#include <netdb.h>
+#include <stdio.h>
+#include <libssh2.h>
+#include <libssh2_sftp.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "server.h"
+
+int server_write_file(char *host, int port, char *username, char *pubkey, char *privkey, char *password, char *remote_path, char *content) {
+	int rc;
+	libssh2_socket_t sock;
+	struct sockaddr_in sin;
+	LIBSSH2_SESSION *session = NULL;
+	LIBSSH2_SFTP *sftp_session;
+	LIBSSH2_SFTP_HANDLE *sftp_handle;
+	struct addrinfo *res = NULL;
+	struct addrinfo *i;
+
+	if (getaddrinfo(host, NULL, 0, &res) != 0) {
+		fprintf(stderr, "Cloudn't resolve host \"%s\"\n", host);
+		return 1;
+	}
+
+	for (i = res; i != NULL; i = i->ai_next) {
+		if (i->ai_addr->sa_family == AF_INET) {
+			sin = *(struct sockaddr_in*)i->ai_addr;
+			break;
+		}
+	}
+
+	rc = libssh2_init(0);
+
+	if(rc) {
+        fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
+        return 1;
+    }
+
+	sock = socket(AF_INET, SOCK_STREAM, 0);
+
+	if (sock == LIBSSH2_INVALID_SOCKET) {
+		fprintf(stderr, "failed to create socket.\n");
+		goto shutdown;
+	}
+
+	//sin.sin_family = AF_INET;
+	sin.sin_port = htons(port);
+	//sin.sin_addr.s_addr = inet_addr(host);
+
+	if (connect(sock, (struct sockaddr*)(&sin), sizeof(struct sockaddr_in))) {
+		fprintf(stderr, "failed to connect.\n");
+		goto shutdown;
+	}
+
+	session = libssh2_session_init();
+
+	if (!session) {
+		fprintf(stderr, "Could not initialize SSH session.\n");
+		goto shutdown;
+	}
+
+	libssh2_session_set_blocking(session, 1);
+
+	rc = libssh2_session_handshake(session, sock);
+
+	if (rc) {
+		fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
+		goto shutdown;
+	}
+
+	if (libssh2_userauth_publickey_fromfile(session, username, pubkey, privkey, password)) {
+		fprintf(stderr, "Authentication by public key failed.\n");
+		goto shutdown;
+	}
+
+	sftp_session = libssh2_sftp_init(session);
+
+	if (!sftp_session) {
+		fprintf(stderr, "Unable to init SFTP session\n");
+		goto shutdown;
+	}
+
+	sftp_handle = libssh2_sftp_open(sftp_session, remote_path, LIBSSH2_FXF_WRITE | LIBSSH2_FXF_CREAT | LIBSSH2_FXF_TRUNC, LIBSSH2_SFTP_S_IRUSR | LIBSSH2_SFTP_S_IWUSR | LIBSSH2_SFTP_S_IRGRP | LIBSSH2_SFTP_S_IROTH);
+
+	if (!sftp_handle) {
+		fprintf(stderr, "Unable to open file with SFTP: %ld\n", libssh2_sftp_last_error(sftp_session));
+		goto shutdown;
+	}
+
+	libssh2_sftp_write(sftp_handle, content, strlen(content));
+
+	libssh2_sftp_close(sftp_handle);
+
+	libssh2_sftp_shutdown(sftp_session);
+
+shutdown:
+
+	if(session) {
+		libssh2_session_disconnect(session, "Normal Shutdown");
+
+		libssh2_session_free(session);
+
+	}
+
+	if(sock != LIBSSH2_INVALID_SOCKET) {
+		shutdown(sock, 2);
+		close(sock);
+	}
+
+	fprintf(stderr, "all done\n");
+
+	libssh2_exit();
+
+	return 0;
+}