127 lines
2.7 KiB
C++
127 lines
2.7 KiB
C++
#include "SFTP.h"
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SFTP::SFTP(const char *host, const char *user, const char *pass, const char *port)
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{
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this->ssh_connect(host, user, pass, port);
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this->sftp_connect();
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};
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SFTP::~SFTP() {
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libssh2_sftp_shutdown(sftp_session);
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libssh2_session_disconnect(session, "Normal Shutdown, Thank you for playing");
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libssh2_session_free(session);
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close(sock);
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libssh2_exit();
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freeaddrinfo(host_info_list);
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freeaddrinfo(&host_info);
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};
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string SFTP::getFile(const char *path)
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{
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string output = "";
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LIBSSH2_SFTP_HANDLE *sftp_handle;
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sftp_handle = libssh2_sftp_open(sftp_session, path, LIBSSH2_FXF_READ, 0);
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if ( ! sftp_handle)
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{
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fprintf(stderr, "Unable to open file with SFTP: %ld\n", libssh2_sftp_last_error(sftp_session));
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return output;
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}
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do {
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char mem[1024];
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// loop until fail
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rc = libssh2_sftp_read(sftp_handle, mem, sizeof(mem));
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if (rc > 0)
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{
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output += (string)mem;
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}
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else break;
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} while (1);
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libssh2_sftp_close(sftp_handle);
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return output;
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}
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void SFTP::ssh_connect(const char *host, const char *user, const char *pass, const char *port)
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{
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// Clear out memory in addr structure
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memset(&host_info, 0, sizeof host_info);
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host_info.ai_family = AF_UNSPEC;
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host_info.ai_socktype = SOCK_STREAM;
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status = getaddrinfo(host, port, &host_info, &host_info_list);
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if (status != 0)
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{
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cout << "getaddrinfo error" << gai_strerror(status) << endl;
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}
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// Start libssh2
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rc = libssh2_init(0);
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if (rc != 0)
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{
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cout << "Libssh2 initialization failed " << "(" << rc << ")" << endl;
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return;
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}
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sock = socket(AF_INET, SOCK_STREAM, 0);
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if (connect(sock, host_info_list->ai_addr, host_info_list->ai_addrlen) != 0)
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{
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cout << "Failed to connect to socket." << endl;
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return;
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}
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session = libssh2_session_init();
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/* Since we have set non-blocking, tell libssh2 we are blocking */
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libssh2_session_set_blocking(session, 1);
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// Actually do the ssh handshake
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rc = libssh2_session_handshake(session, sock);
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if (rc)
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{
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cout << "Failure establishing SSH session:" << rc << endl;
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return;
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}
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// Get the host fingerprint to check against known hosts
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fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
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fprintf(stderr, "Fingerprint: ");
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for (int i = 0; i < 20; i++)
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{
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fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
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}
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fprintf(stderr, "\n");
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//@TODO do something with the handling of known hosts
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// Authenticate (by password)
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if (libssh2_userauth_password(session, user, pass))
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{
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fprintf(stderr, "Authentication by password failed.\n");
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return;
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}
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}
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void SFTP::sftp_connect()
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{
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sftp_session = libssh2_sftp_init(session);
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if ( ! sftp_session)
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{
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fprintf(stderr, "Unable to start SFTP session \n");
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return;
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}
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}
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