diff options
Diffstat (limited to 'libssh2-sys/libssh2-1.5.0/example/scp_write_nonblock.c')
| -rw-r--r-- | libssh2-sys/libssh2-1.5.0/example/scp_write_nonblock.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/libssh2-sys/libssh2-1.5.0/example/scp_write_nonblock.c b/libssh2-sys/libssh2-1.5.0/example/scp_write_nonblock.c new file mode 100644 index 0000000..bb8e39d --- /dev/null +++ b/libssh2-sys/libssh2-1.5.0/example/scp_write_nonblock.c @@ -0,0 +1,283 @@ +/* + * Sample showing how to do an SCP non-blocking upload transfer. + */ + +#include "libssh2_config.h" + +#include <libssh2.h> + +#ifdef HAVE_WINSOCK2_H +# include <winsock2.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_SYS_SELECT_H +# include <sys/select.h> +#endif +# ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif + +#include <sys/types.h> +#include <fcntl.h> +#include <errno.h> +#include <stdio.h> +#include <ctype.h> +#include <time.h> + +static int waitsocket(int socket_fd, LIBSSH2_SESSION *session) +{ + struct timeval timeout; + int rc; + fd_set fd; + fd_set *writefd = NULL; + fd_set *readfd = NULL; + int dir; + + timeout.tv_sec = 10; + timeout.tv_usec = 0; + + FD_ZERO(&fd); + + FD_SET(socket_fd, &fd); + + /* now make sure we wait in the correct direction */ + dir = libssh2_session_block_directions(session); + + if(dir & LIBSSH2_SESSION_BLOCK_INBOUND) + readfd = &fd; + + if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND) + writefd = &fd; + + rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout); + + return rc; +} + +int main(int argc, char *argv[]) +{ + unsigned long hostaddr; + int sock, i, auth_pw = 1; + struct sockaddr_in sin; + const char *fingerprint; + LIBSSH2_SESSION *session = NULL; + LIBSSH2_CHANNEL *channel; + const char *username="username"; + const char *password="password"; + const char *loclfile="scp_write.c"; + const char *scppath="/tmp/TEST"; + FILE *local; + int rc; + char mem[1024*100]; + size_t nread; + char *ptr; + struct stat fileinfo; + time_t start; + long total = 0; + int duration; + size_t prev; + +#ifdef WIN32 + WSADATA wsadata; + int err; + + err = WSAStartup(MAKEWORD(2,0), &wsadata); + if (err != 0) { + fprintf(stderr, "WSAStartup failed with error: %d\n", err); + return 1; + } +#endif + + if (argc > 1) { + hostaddr = inet_addr(argv[1]); + } else { + hostaddr = htonl(0x7F000001); + } + if (argc > 2) { + username = argv[2]; + } + if (argc > 3) { + password = argv[3]; + } + if(argc > 4) { + loclfile = argv[4]; + } + if (argc > 5) { + scppath = argv[5]; + } + + rc = libssh2_init (0); + if (rc != 0) { + fprintf (stderr, "libssh2 initialization failed (%d)\n", rc); + return 1; + } + + local = fopen(loclfile, "rb"); + if (!local) { + fprintf(stderr, "Can't local file %s\n", loclfile); + return -1; + } + + stat(loclfile, &fileinfo); + + /* Ultra basic "connect to port 22 on localhost" + * Your code is responsible for creating the socket establishing the + * connection + */ + sock = socket(AF_INET, SOCK_STREAM, 0); + + sin.sin_family = AF_INET; + sin.sin_port = htons(22); + sin.sin_addr.s_addr = hostaddr; + if (connect(sock, (struct sockaddr*)(&sin), + sizeof(struct sockaddr_in)) != 0) { + fprintf(stderr, "failed to connect!\n"); + return -1; + } + + /* Create a session instance + */ + session = libssh2_session_init(); + if(!session) + return -1; + + /* Since we have set non-blocking, tell libssh2 we are non-blocking */ + libssh2_session_set_blocking(session, 0); + + /* ... start it up. This will trade welcome banners, exchange keys, + * and setup crypto, compression, and MAC layers + */ + while ((rc = libssh2_session_handshake(session, sock)) + == LIBSSH2_ERROR_EAGAIN); + if(rc) { + fprintf(stderr, "Failure establishing SSH session: %d\n", rc); + return -1; + } + + /* At this point we havn't yet authenticated. The first thing to do + * is check the hostkey's fingerprint against our known hosts Your app + * may have it hard coded, may go to a file, may present it to the + * user, that's your call + */ + fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1); + fprintf(stderr, "Fingerprint: "); + for(i = 0; i < 20; i++) { + fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]); + } + fprintf(stderr, "\n"); + + if (auth_pw) { + /* We could authenticate via password */ + while ((rc = libssh2_userauth_password(session, username, password)) == + LIBSSH2_ERROR_EAGAIN); + if (rc) { + fprintf(stderr, "Authentication by password failed.\n"); + goto shutdown; + } + } else { + /* Or by public key */ + while ((rc = libssh2_userauth_publickey_fromfile(session, username, + "/home/username/.ssh/id_rsa.pub", + "/home/username/.ssh/id_rsa", + password)) == LIBSSH2_ERROR_EAGAIN); + if (rc) { + fprintf(stderr, "\tAuthentication by public key failed\n"); + goto shutdown; + } + } + + /* Send a file via scp. The mode parameter must only have permissions! */ + do { + channel = libssh2_scp_send(session, scppath, fileinfo.st_mode & 0777, + (unsigned long)fileinfo.st_size); + + if ((!channel) && (libssh2_session_last_errno(session) != + LIBSSH2_ERROR_EAGAIN)) { + char *err_msg; + + libssh2_session_last_error(session, &err_msg, NULL, 0); + fprintf(stderr, "%s\n", err_msg); + goto shutdown; + } + } while (!channel); + + fprintf(stderr, "SCP session waiting to send file\n"); + start = time(NULL); + do { + nread = fread(mem, 1, sizeof(mem), local); + if (nread <= 0) { + /* end of file */ + break; + } + ptr = mem; + + total += nread; + + prev = 0; + do { + while ((rc = libssh2_channel_write(channel, ptr, nread)) == + LIBSSH2_ERROR_EAGAIN) { + waitsocket(sock, session); + prev = 0; + } + if (rc < 0) { + fprintf(stderr, "ERROR %d total %ld / %d prev %d\n", rc, + total, (int)nread, (int)prev); + break; + } + else { + prev = nread; + + /* rc indicates how many bytes were written this time */ + nread -= rc; + ptr += rc; + } + } while (nread); + } while (!nread); /* only continue if nread was drained */ + + duration = (int)(time(NULL)-start); + + fprintf(stderr, "%ld bytes in %d seconds makes %.1f bytes/sec\n", + total, duration, total/(double)duration); + + fprintf(stderr, "Sending EOF\n"); + while (libssh2_channel_send_eof(channel) == LIBSSH2_ERROR_EAGAIN); + + fprintf(stderr, "Waiting for EOF\n"); + while (libssh2_channel_wait_eof(channel) == LIBSSH2_ERROR_EAGAIN); + + fprintf(stderr, "Waiting for channel to close\n"); + while (libssh2_channel_wait_closed(channel) == LIBSSH2_ERROR_EAGAIN); + + libssh2_channel_free(channel); + channel = NULL; + + shutdown: + + while (libssh2_session_disconnect(session, + "Normal Shutdown, Thank you for playing") == + LIBSSH2_ERROR_EAGAIN); + libssh2_session_free(session); + +#ifdef WIN32 + closesocket(sock); +#else + close(sock); +#endif + fprintf(stderr, "all done\n"); + + libssh2_exit(); + + return 0; +} |