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Diffstat (limited to 'examples/samplesftp.c')
-rw-r--r-- | examples/samplesftp.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/examples/samplesftp.c b/examples/samplesftp.c new file mode 100644 index 00000000..469ef362 --- /dev/null +++ b/examples/samplesftp.c @@ -0,0 +1,263 @@ +/* +Copyright 2003-2009 Aris Adamantiadis + +This file is part of the SSH Library + +You are free to copy this file, modify it in any way, consider it being public +domain. This does not apply to the rest of the library though, but it is +allowed to cut-and-paste working code from this file to any license of +program. +The goal is to show the API in action. It's not a reference on how terminal +clients must be made or how a client should react. +*/ + +#include "config.h" + +#include <sys/statvfs.h> +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> + +#include <libssh/libssh.h> +#include <libssh/sftp.h> + +#include "examples_common.h" +#ifdef WITH_SFTP + +int verbosity; +char *destination; + +static void do_sftp(ssh_session session){ + sftp_session sftp=sftp_new(session); + sftp_dir dir; + sftp_attributes file; + sftp_statvfs_t sftpstatvfs; + struct statvfs sysstatvfs; + sftp_file fichier; + sftp_file to; + int len=1; + unsigned int i; + char data[8000]={0}; + char *lnk; + + unsigned int count; + + if(!sftp){ + fprintf(stderr, "sftp error initialising channel: %s\n", + ssh_get_error(session)); + return; + } + if(sftp_init(sftp)){ + fprintf(stderr, "error initialising sftp: %s\n", + ssh_get_error(session)); + return; + } + + printf("Additional SFTP extensions provided by the server:\n"); + count = sftp_extensions_get_count(sftp); + for (i = 0; i < count; i++) { + printf("\t%s, version: %s\n", + sftp_extensions_get_name(sftp, i), + sftp_extensions_get_data(sftp, i)); + } + + /* test symlink and readlink */ + if (sftp_symlink(sftp, "/tmp/this_is_the_link", + "/tmp/sftp_symlink_test") < 0) { + fprintf(stderr, "Could not create link (%s)\n", ssh_get_error(session)); + return; + } + + lnk = sftp_readlink(sftp, "/tmp/sftp_symlink_test"); + if (lnk == NULL) { + fprintf(stderr, "Could not read link (%s)\n", ssh_get_error(session)); + return; + } + printf("readlink /tmp/sftp_symlink_test: %s\n", lnk); + + sftp_unlink(sftp, "/tmp/sftp_symlink_test"); + + if (sftp_extension_supported(sftp, "statvfs@openssh.com", "2")) { + sftpstatvfs = sftp_statvfs(sftp, "/tmp"); + if (sftpstatvfs == NULL) { + fprintf(stderr, "statvfs failed (%s)\n", ssh_get_error(session)); + return; + } + + printf("sftp statvfs:\n" + "\tfile system block size: %llu\n" + "\tfundamental fs block size: %llu\n" + "\tnumber of blocks (unit f_frsize): %llu\n" + "\tfree blocks in file system: %llu\n" + "\tfree blocks for non-root: %llu\n" + "\ttotal file inodes: %llu\n" + "\tfree file inodes: %llu\n" + "\tfree file inodes for to non-root: %llu\n" + "\tfile system id: %llu\n" + "\tbit mask of f_flag values: %llu\n" + "\tmaximum filename length: %llu\n", + (unsigned long long) sftpstatvfs->f_bsize, + (unsigned long long) sftpstatvfs->f_frsize, + (unsigned long long) sftpstatvfs->f_blocks, + (unsigned long long) sftpstatvfs->f_bfree, + (unsigned long long) sftpstatvfs->f_bavail, + (unsigned long long) sftpstatvfs->f_files, + (unsigned long long) sftpstatvfs->f_ffree, + (unsigned long long) sftpstatvfs->f_favail, + (unsigned long long) sftpstatvfs->f_fsid, + (unsigned long long) sftpstatvfs->f_flag, + (unsigned long long) sftpstatvfs->f_namemax); + + sftp_statvfs_free(sftpstatvfs); + + if (statvfs("/tmp", &sysstatvfs) < 0) { + fprintf(stderr, "statvfs failed (%s)\n", strerror(errno)); + return; + } + + printf("sys statvfs:\n" + "\tfile system block size: %llu\n" + "\tfundamental fs block size: %llu\n" + "\tnumber of blocks (unit f_frsize): %llu\n" + "\tfree blocks in file system: %llu\n" + "\tfree blocks for non-root: %llu\n" + "\ttotal file inodes: %llu\n" + "\tfree file inodes: %llu\n" + "\tfree file inodes for to non-root: %llu\n" + "\tfile system id: %llu\n" + "\tbit mask of f_flag values: %llu\n" + "\tmaximum filename length: %llu\n", + (unsigned long long) sysstatvfs.f_bsize, + (unsigned long long) sysstatvfs.f_frsize, + (unsigned long long) sysstatvfs.f_blocks, + (unsigned long long) sysstatvfs.f_bfree, + (unsigned long long) sysstatvfs.f_bavail, + (unsigned long long) sysstatvfs.f_files, + (unsigned long long) sysstatvfs.f_ffree, + (unsigned long long) sysstatvfs.f_favail, + (unsigned long long) sysstatvfs.f_fsid, + (unsigned long long) sysstatvfs.f_flag, + (unsigned long long) sysstatvfs.f_namemax); + } + + /* the connection is made */ + /* opening a directory */ + dir=sftp_opendir(sftp,"./"); + if(!dir) { + fprintf(stderr, "Directory not opened(%s)\n", ssh_get_error(session)); + return ; + } + /* reading the whole directory, file by file */ + while((file=sftp_readdir(sftp,dir))){ + fprintf(stderr, "%30s(%.8o) : %.5d.%.5d : %.10llu bytes\n", + file->name, + file->permissions, + file->uid, + file->gid, + (long long unsigned int) file->size); + sftp_attributes_free(file); + } + /* when file=NULL, an error has occured OR the directory listing is end of file */ + if(!sftp_dir_eof(dir)){ + fprintf(stderr, "Error: %s\n", ssh_get_error(session)); + return; + } + if(sftp_closedir(dir)){ + fprintf(stderr, "Error: %s\n", ssh_get_error(session)); + return; + } + /* this will open a file and copy it into your /home directory */ + /* the small buffer size was intended to stress the library. of course, you can use a buffer till 20kbytes without problem */ + + fichier=sftp_open(sftp,"/usr/bin/ssh",O_RDONLY, 0); + if(!fichier){ + fprintf(stderr, "Error opening /usr/bin/ssh: %s\n", + ssh_get_error(session)); + return; + } + /* open a file for writing... */ + to=sftp_open(sftp,"ssh-copy",O_WRONLY | O_CREAT, 0700); + if(!to){ + fprintf(stderr, "Error opening ssh-copy for writing: %s\n", + ssh_get_error(session)); + return; + } + while((len=sftp_read(fichier,data,4096)) > 0){ + if(sftp_write(to,data,len)!=len){ + fprintf(stderr, "Error writing %d bytes: %s\n", + len, ssh_get_error(session)); + return; + } + } + printf("finished\n"); + if(len<0) + fprintf(stderr, "Error reading file: %s\n", ssh_get_error(session)); + sftp_close(fichier); + sftp_close(to); + printf("fichiers ferm\n"); + to=sftp_open(sftp,"/tmp/grosfichier",O_WRONLY|O_CREAT, 0644); + for(i=0;i<1000;++i){ + len=sftp_write(to,data,8000); + printf("wrote %d bytes\n",len); + if(len != 8000){ + printf("chunk %d : %d (%s)\n",i,len,ssh_get_error(session)); + } + } + sftp_close(to); + + /* close the sftp session */ + sftp_free(sftp); + printf("sftp session terminated\n"); +} + +static void usage(const char *argv0){ + fprintf(stderr,"Usage : %s [-v] remotehost\n" + "sample sftp test client - libssh-%s\n" + "Options :\n" + " -v : increase log verbosity\n", + argv0, + ssh_version(0)); + exit(0); +} + +static int opts(int argc, char **argv){ + int i; + while((i=getopt(argc,argv,"v"))!=-1){ + switch(i){ + case 'v': + verbosity++; + break; + default: + fprintf(stderr,"unknown option %c\n",optopt); + usage(argv[0]); + return -1; + } + } + + destination=argv[optind]; + if(destination == NULL){ + usage(argv[0]); + return -1; + } + return 0; +} + +int main(int argc, char **argv){ + ssh_session session; + if(opts(argc,argv)<0) + return EXIT_FAILURE; + session=connect_ssh(destination,NULL,verbosity); + if(session == NULL) + return EXIT_FAILURE; + do_sftp(session); + ssh_disconnect(session); + ssh_free(session); + return 0; +} + + + +#endif |