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command.c
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/*
* Copyright (c) 2003, 2007 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <ctype.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#ifdef HAVE_LIBPAM
#ifdef HAVE_PAM_PAM_APPL_H
#include <pam/pam_appl.h>
#elif HAVE_SECURITY_PAM_APPL_H
#include <security/pam_appl.h>
#else /* HAVE_PAM_ not defined */
die die die
#endif /* HAVE_PAM_* */
#endif /* HAVE_LIBPAM */
extern SSL_CTX *ctx;
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif /* HAVE_ZLIB */
#include <snet.h>
#include "applefile.h"
#include "base64.h"
#include "command.h"
#include "argcargv.h"
#include "cksum.h"
#include "code.h"
#include "list.h"
#include "wildcard.h"
#include "largefile.h"
#include "mkdirs.h"
#include "connect.h"
#define RADMIND_MAX_INCLUDE_DEPTH 10
#define DEFAULT_MODE 0444
#define DEFAULT_UID 0
#define DEFAULT_GID 0
#define K_COMMAND 1
#define K_TRANSCRIPT 2
#define K_SPECIAL 3
#define K_FILE 4
#define K_XATTR 5
int read_kfile( SNET *sn, char *kfile );
int f_quit( SNET *, int, char *[] );
int f_noop( SNET *, int, char *[] );
int f_help( SNET *, int, char *[] );
int f_stat( SNET *, int, char *[] );
int f_retr( SNET *, int, char *[] );
int f_stor( SNET *, int, char *[] );
int f_noauth( SNET *, int, char *[] );
int f_notls( SNET *, int, char *[] );
int f_starttls( SNET *, int, char *[] );
int f_repo( SNET *, int, char *[] );
#ifdef HAVE_LIBPAM
int f_login( SNET *, int, char *[] );
int exchange( int num_msg, struct pam_message **msgm,
struct pam_response **response, void *appdata_ptr );
#endif /* HAVE_LIBPAM */
#ifdef HAVE_ZLIB
int f_compress( SNET *, int, char *[] );
#endif /* HAVE_ZLIB */
char *user = NULL;
char *password = NULL;
char *remote_host = NULL;
char *remote_addr = NULL;
char *remote_cn = NULL;
char special_dir[ MAXPATHLEN ];
char command_file[ MAXPATHLEN ];
char upload_xscript[ MAXPATHLEN ];
const EVP_MD *md = NULL;
struct list *access_list = NULL;
int ncommands = 0;
int authorized = 0;
int prevstor = 0;
int case_sensitive = 1;
char hostname[ MAXHOSTNAMELEN ];
#ifdef HAVE_ZLIB
int max_zlib_level = 0;
#endif /* HAVE_ZLIB */
extern int debug;
extern int authlevel;
extern int checkuser;
struct command notls[] = {
{ "QUIT", f_quit },
{ "NOOP", f_noop },
{ "HELP", f_help },
{ "STATus", f_notls },
{ "RETRieve", f_notls },
{ "STORe", f_notls },
{ "STARttls", f_starttls },
{ "REPOrt", f_notls },
#ifdef HAVE_LIBPAM
{ "LOGIn", f_notls },
#endif /* HAVE_LIBPAM */
#ifdef HAVE_ZLIB
{ "COMPress", f_notls },
#endif /* HAVE_ZLIB */
};
struct command noauth[] = {
{ "QUIT", f_quit },
{ "NOOP", f_noop },
{ "HELP", f_help },
{ "STATus", f_noauth },
{ "RETRieve", f_noauth },
{ "STORe", f_noauth },
{ "REPOrt", f_noauth },
#ifdef HAVE_LIBPAM
{ "LOGIn", f_noauth },
#endif /* HAVE_LIBPAM */
#ifdef HAVE_ZLIB
{ "COMPress", f_noauth },
#endif /* HAVE_ZLIB */
};
struct command auth[] = {
{ "QUIT", f_quit },
{ "NOOP", f_noop },
{ "HELP", f_help },
{ "STATus", f_stat },
{ "RETRieve", f_retr },
{ "STORe", f_stor },
{ "STARttls", f_starttls },
{ "REPOrt", f_repo },
#ifdef HAVE_LIBPAM
{ "LOGIn", f_login },
#endif /* HAVE_LIBPAM */
#ifdef HAVE_ZLIB
{ "COMPress", f_compress },
#endif /* HAVE_ZLIB */
};
struct command *commands = NULL;
int
f_quit( SNET *sn, int ac, char **av )
{
snet_writef( sn, "%d QUIT OK, closing connection\r\n", 201 );
#ifdef HAVE_ZLIB
if ( debug && max_zlib_level > 0 ) print_stats( sn );
#endif /* HAVE_ZLIB */
exit( 0 );
}
int
f_noop( SNET *sn, int ac, char **av )
{
snet_writef( sn, "%d NOOP OK\r\n", 202 );
return( 0 );
}
int
f_help( SNET *sn, int ac, char **av )
{
snet_writef( sn, "%d What is this, SMTP?\r\n", 203 );
return( 0 );
}
int
f_noauth( SNET *sn, int ac, char **av )
{
snet_writef( sn, "%d No access for %s\r\n", 500, remote_host );
exit( 1 );
}
int
f_notls( SNET *sn, int ac, char **av )
{
snet_writef( sn, "%d Must issue a STARTTLS command first\r\n", 530 );
exit( 1 );
}
int
keyword( int ac, char *av[] )
{
/*
* For now let's always check the biggest max,
* and later we can worry about command specific
* checks or no. remote_host is global. +5 is for
* "/tmp\0"
*/
int rc;
if ( ac < 2 ) {
return( -1 );
}
if ( strcasecmp( av[ 1 ], "COMMAND" ) == 0 ) {
if ( ac > 3 ) {
return( -1 );
}
if ( ac == 2 ) {
if ( strlen( command_file + 5 ) > MAXPATHLEN ) {
syslog( LOG_WARNING, "[tmp]/%s longer than MAXPATHLEN",
command_file );
return( -1 );
}
}
return( K_COMMAND );
}
if ( strcasecmp( av[ 1 ], "SPECIAL" ) == 0 ) {
if ( ac != 3 ) {
return( -1 );
}
if ( strlen( av[ 1 ] ) + strlen( av[ 2 ] ) +
strlen( remote_host ) + 5 > MAXPATHLEN ) {
syslog( LOG_WARNING,
"Overflow attempt: %s/%s-%s longer than MAXPATHLEN",
av[ 1 ], av[ 2 ], remote_host );
return( -1 );
}
rc = K_SPECIAL;
} else if ( strcasecmp( av[ 1 ], "TRANSCRIPT" ) == 0 ) {
if ( ac != 3 ) {
return( -1 );
}
if ( strlen( av[ 1 ] ) + strlen( av[ 2 ] ) + 5 > MAXPATHLEN ) {
syslog( LOG_WARNING, "[tmp]/%s/%s longer than MAXPATHLEN",
av[ 1 ], av [ 2 ] );
return( -1 );
}
rc = K_TRANSCRIPT;
} else if ( strcasecmp( av[ 1 ], "FILE" ) == 0 ) {
rc = K_FILE;
} else if ( strcasecmp( av[ 1 ], "XATTR" ) == 0 ) {
rc = K_XATTR;
} else {
return( -1 );
}
if ( rc == K_FILE || rc == K_XATTR ) {
if ( ac != 4 ) {
return( -1 );
}
/* Check for leading ../ */
if ( strncmp( av[ 3 ], "../", strlen( "../" )) == 0 ) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", av[ 3 ] );
return( -1 );
}
/* Check for internal /../ */
if ( strstr( av[ 3 ], "/../" ) != NULL ) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", av[ 3 ] );
return( -1 );
}
if ( strlen( av[ 1 ] ) + strlen( av[ 2 ] ) +
strlen( av[ 3 ] ) + 5 > MAXPATHLEN ) {
syslog( LOG_WARNING,
"Overflow attempt: %s/%s/%s longer than MAXPATHLEN",
av[ 1 ], av[ 2 ], av[ 3 ] );
return( -1 );
}
}
if ( strstr( av[ 2 ], "../" ) != NULL ) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", av[ 2 ] );
return( -1 );
}
return( rc );
}
int
f_retr( SNET *sn, int ac, char **av )
{
ssize_t readlen;
struct stat st;
struct timeval tv;
char buf[8192];
char path[ MAXPATHLEN ];
char *d_path, *d_tran;
char *loc = "file";
int rc, fd;
rc = keyword( ac, av );
switch ( rc ) {
case K_COMMAND:
if ( ac == 2 ) {
if ( snprintf( path, MAXPATHLEN, "command/%s", command_file )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_retr: command/%s: path too long",
command_file );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
} else {
if (( d_path = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_retr: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
/* Check for access */
if ( !list_check( access_list, d_path )) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s",
d_path );
snet_writef( sn, "%d No access for %s\r\n", 540, d_path );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "command/%s", d_path )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_retr: command path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
}
break;
case K_TRANSCRIPT:
if (( d_tran = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_retr: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
/* Check for access */
if ( !list_check( access_list, d_tran )) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", d_tran );
snet_writef( sn, "%d No access for %s\r\n", 540, d_tran );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "transcript/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_retr: transcript path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
break;
case K_SPECIAL:
if (( d_path = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_retr: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "%s/%s", special_dir, d_path )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_retr: special path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
break;
case K_FILE:
/* location already set. */
break;
case K_XATTR:
loc = "xattr";
break;
default:
snet_writef( sn, "%d RETR Syntax error\r\n", 540 );
return( 1 );
}
if ( rc == K_FILE || rc == K_XATTR ) {
if (( d_path = decode( av[ 3 ] )) == NULL ) {
syslog( LOG_ERR, "f_retr: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if (( d_path = strdup( d_path )) == NULL ) {
syslog( LOG_ERR, "f_retr: strdup: %s: %m", d_path );
return( -1 );
}
if (( d_tran = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_retr: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
/* Check for access */
if ( !list_check( access_list, d_tran )) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", d_tran );
snet_writef( sn, "%d No access for %s:%s\r\n", 540, d_tran,
d_path );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "%s/%s/%s", loc, d_tran, d_path )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_retr: file path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
free( d_path );
}
if (( fd = open( path, O_RDONLY, 0 )) < 0 ) {
syslog( LOG_ERR, "open: %s: %m", path );
snet_writef( sn, "%d Unable to access %s.\r\n", 543, path );
return( 1 );
}
/* dump file info */
if ( fstat( fd, &st ) < 0 ) {
syslog( LOG_ERR, "f_retr: fstat: %m" );
snet_writef( sn, "%d Access Error: %s\r\n", 543, path );
if ( close( fd ) < 0 ) {
syslog( LOG_ERR, "close: %m" );
return( -1 );
}
return( 1 );
}
/*
* Here's a problem. Do we need to add long long support to
* snet_writef?
*/
snet_writef( sn, "240 Retrieving file\r\n%" PRIofft "d\r\n", st.st_size );
/* dump file */
while (( readlen = read( fd, buf, sizeof( buf ))) > 0 ) {
tv.tv_sec = 60 ;
tv.tv_usec = 0;
if ( snet_write( sn, buf, readlen, &tv ) != readlen ) {
syslog( LOG_ERR, "snet_write: %m" );
return( -1 );
}
}
if ( readlen < 0 ) {
syslog( LOG_ERR, "read: %m" );
return( -1 );
}
snet_writef( sn, ".\r\n" );
if ( close( fd ) < 0 ) {
syslog( LOG_ERR, "close: %m" );
return( -1 );
}
syslog( LOG_DEBUG, "f_retr: 'file' %s retrieved", path );
return( 0 );
}
/* looks for special file info in transcripts */
char **
special_t( char *sp_path, char *remote_path )
{
FILE *fs = NULL;
int i, ac, len, ln;
char **av = NULL;
char *paths[ 4 ] = { NULL };
char *p;
char sp_t[ MAXPATHLEN ];
static char line[ MAXPATHLEN ];
/*
* in order, we look for special file transcript lines in the
* following locations:
*
* - A transcript in the same directory and with the same name
* as the special file, but with a ".T" extension.
*
* - A transcript named "<remote_id>.T" in the same directory as
* the client's special file directory root.
*
* - /var/radmind/transcript/special.T
*
* if no matching transcript line is found, default metadata is
* returned to the client (type: f; mode: 0444; owner: 0; group: 0).
*/
paths[ 0 ] = sp_path;
paths[ 1 ] = special_dir;
paths[ 2 ] = "transcript/special.T";
paths[ 3 ] = NULL;
for ( i = 0; paths[ i ] != NULL; i++ ) {
if (( p = strrchr( paths[ i ], '.' )) != NULL
&& strcmp( p, ".T" ) == 0 ) {
if ( strlen( paths[ i ] ) >= MAXPATHLEN ) {
syslog( LOG_WARNING, "special_t: path \"%s\" too long",
paths[ i ] );
continue;
}
strcpy( sp_t, paths[ i ] );
} else if ( snprintf( sp_t, MAXPATHLEN, "%s.T",
paths[ i ] ) >= MAXPATHLEN ) {
syslog( LOG_WARNING, "special_t: path \"%s.T\" too long", sp_path );
continue;
}
if (( fs = fopen( sp_t, "r" )) == NULL ) {
continue;
}
ln = 0;
while ( fgets( line, MAXPATHLEN, fs ) != NULL ) {
ln++;
len = strlen( line );
if (( line[ len - 1 ] ) != '\n' ) {
syslog( LOG_ERR, "special_t: %s: line %d too long", sp_t, ln );
break;
}
/* only files and applefiles allowed */
if ( strncmp( line, "f ", strlen( "f " )) != 0 &&
strncmp( line, "a ", strlen( "a " )) != 0 ) {
continue;
}
if (( ac = argcargv( line, &av )) != 8 ) {
syslog( LOG_WARNING, "special_t: %s: line %d: "
"bad transcript line", sp_t, ln );
continue;
}
if ( strcmp( av[ 1 ], remote_path ) == 0 ) {
(void)fclose( fs );
return( av );
}
}
if ( fclose( fs ) != 0 ) {
syslog( LOG_WARNING, "special_t: fclose %s: %m", sp_t );
}
fs = NULL;
}
if ( fs != NULL ) {
(void)fclose( fs );
}
return( NULL );
}
int
f_stat( SNET *sn, int ac, char *av[] )
{
char path[ MAXPATHLEN ];
char cksum_b64[ SZ_BASE64_E( EVP_MAX_MD_SIZE ) ];
struct stat st;
int key;
char *enc_file, *d_tran, *d_path;
switch ( key = keyword( ac, av )) {
case K_COMMAND:
if ( ac == 2 ) {
if ( snprintf( path, MAXPATHLEN, "command/%s", command_file )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stat: command/%s: path too long",
command_file );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
} else {
if (( d_path = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stat: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
/* Check for access */
if ( !list_check( access_list, d_path )) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s",
d_path );
snet_writef( sn, "%d No access for %s\r\n", 540, d_path );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "command/%s", d_path )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stat: command path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
}
break;
case K_TRANSCRIPT:
if (( d_tran = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stat: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
/* Check for access */
if ( !list_check( access_list, d_tran )) {
syslog( LOG_WARNING | LOG_AUTH, "attempt to access: %s", d_tran );
snet_writef( sn, "%d No access for %s\r\n", 540, d_tran );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "transcript/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stat: transcript path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
break;
case K_SPECIAL:
if (( d_path = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stat: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if ( snprintf( path, MAXPATHLEN, "%s/%s", special_dir, d_path)
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stat: special path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
break;
default:
snet_writef( sn, "%d STAT Syntax error\r\n", 530 );
return( 1 );
}
syslog( LOG_DEBUG, "f_stat: returning infomation for %s", path );
if ( stat( path, &st ) < 0 ) {
syslog( LOG_ERR, "f_stat: stat: %m" );
snet_writef( sn, "%d Access Error: %s\r\n", 531, path );
return( 1 );
}
/* XXX cksums here, totally the wrong place to do this! */
OpenSSL_add_all_digests();
md = EVP_get_digestbyname( "sha1" );
if ( !md ) {
/* XXX */
fprintf( stderr, "%s: unsupported checksum\n", "sha1" );
exit( 1 );
}
if ( do_cksum( path, cksum_b64 ) < 0 ) {
syslog( LOG_ERR, "do_cksum: %s: %m", path );
snet_writef( sn, "%d Checksum Error: %s: %m\r\n", 500, path );
return( 1 );
}
snet_writef( sn, "%d Returning STAT information\r\n", 230 );
switch ( key ) {
case K_COMMAND:
if ( ac == 2 ) {
snet_writef( sn, "%s %s %o %d %d %d %" PRIofft "d %s\r\n",
"f", "command", DEFAULT_MODE, DEFAULT_UID, DEFAULT_GID,
st.st_mtime, st.st_size, cksum_b64 );
} else {
snet_writef( sn, "%s %s %o %d %d %d %" PRIofft "d %s\r\n",
"f", av[ 2 ], DEFAULT_MODE, DEFAULT_UID, DEFAULT_GID,
st.st_mtime, st.st_size, cksum_b64 );
}
return( 0 );
case K_TRANSCRIPT:
snet_writef( sn, "%s %s %o %d %d %d %" PRIofft "d %s\r\n",
"f", av[ 2 ],
DEFAULT_MODE, DEFAULT_UID, DEFAULT_GID,
st.st_mtime, st.st_size, cksum_b64 );
return( 0 );
case K_SPECIAL:
/*
* store value of av[ 2 ], because argcargv will be called
* from special_t(), and that will blow away the current values
* for av[ 2 ].
*/
if (( enc_file = strdup( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stat: strdup: %s %m", av[ 2 ] );
return( -1 );
}
if (( av = special_t( path, enc_file )) == NULL ) {
/* no special transcript match found, return defaults. */
snet_writef( sn, "%s %s %o %d %d %d %" PRIofft "d %s\r\n",
"f", enc_file,
DEFAULT_MODE, DEFAULT_UID, DEFAULT_GID,
st.st_mtime, st.st_size, cksum_b64 );
free( enc_file );
return( 0 );
}
snet_writef( sn, "%s %s %s %s %s %d %" PRIofft "d %s\r\n",
av[ 0 ], enc_file,
av[ 2 ], av[ 3 ], av[ 4 ],
st.st_mtime, st.st_size, cksum_b64 );
free( enc_file );
return( 0 );
default:
return( 1 );
}
}
int
f_stor( SNET *sn, int ac, char *av[] )
{
char *sizebuf;
char xscriptdir[ MAXPATHLEN ];
char upload[ MAXPATHLEN ];
char buf[ 8192 ];
char *line;
char *d_tran, *d_path;
char *loc = "file";
int fd;
int zero = 0;
off_t len;
ssize_t rc;
struct timeval tv;
struct protoent *proto;
if ( !prevstor ) {
/* Turn off TCP_NODELAY for stores */
if (( proto = getprotobyname( "tcp" )) == NULL ) {
syslog( LOG_ERR, "f_stor: getprotobyname: %m" );
return( -1 );
}
if ( setsockopt( snet_fd( sn ), proto->p_proto, TCP_NODELAY, &zero,
sizeof( zero )) != 0 ) {
syslog( LOG_ERR, "f_stor: snet_setopt: %m" );
return( -1 );
}
prevstor = 1;
}
if ( checkuser && ( !authorized )) {
snet_writef( sn, "%d Not logged in\r\n", 551 );
exit( 1 );
}
/* decode() uses static mem, so strdup() */
if (( d_tran = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_stor: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if (( d_tran = strdup( d_tran )) == NULL ) {
syslog( LOG_ERR, "f_stor: strdup: %s: %m", d_tran );
return( -1 );
}
rc = keyword( ac, av );
switch ( rc ) {
case K_TRANSCRIPT:
if ( snprintf( xscriptdir, MAXPATHLEN, "tmp/file/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: xscriptdir path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
if ( snprintf( upload, MAXPATHLEN, "tmp/transcript/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
/* keep encoded transcript name, since it will just be
* used later to compare in a stor file.
*/
if ( strlen( av[ 2 ] ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload_xscript path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
strcpy( upload_xscript, av[ 2 ] );
/* make the directory for the files of this xscript to live in. */
if ( mkdir( xscriptdir, 0777 ) < 0 ) {
if ( errno == EEXIST ) {
snet_writef( sn, "%d Transcript exists\r\n", 551 );
exit( 1 );
}
snet_writef( sn, "%d %s: %s\r\n",
551, xscriptdir, strerror( errno ));
exit( 1 );
}
#ifdef ENABLE_XATTR
if ( snprintf( xscriptdir, MAXPATHLEN, "tmp/xattr/%s", d_tran )
>= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: tmp/xattr/%s: path too long", d_tran );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
if ( mkdir( xscriptdir, 0777 ) < 0 ) {
if ( errno == EEXIST ) {
snet_writef( sn, "%d Transcript exists\r\n", 551 );
exit( 1 );
}
snet_writef( sn, "%d mkdir %s: %s\r\n", 551,
xscriptdir, strerror( errno ));
exit( 1 );
}
#endif /* ENABLE_XATTR */
break;
case K_FILE:
/* upload location already set above. */
break;
#ifdef ENABLE_XATTR
case K_XATTR:
loc = "xattr";
break;
#endif /* ENABLE_XATTR */
default:
snet_writef( sn, "%d STOR Syntax error\r\n", 550 );
exit( 1 );
}
if ( rc == K_FILE
#ifdef ENABLE_XATTR
|| rc == K_XATTR
#endif /* ENABLE_XATTR */
) {
/*
* client must have provided a transcript name before giving
* files in that transcript
*/
if (( strcmp( upload_xscript, av[ 2 ] ) != 0 )) {
snet_writef( sn, "%d Incorrect Transcript %s\r\n", 552, av[ 2 ] );
exit( 1 );
}
/* decode() uses static mem, so strdup() */
if (( d_path = decode( av[ 3 ] )) == NULL ) {
syslog( LOG_ERR, "f_stor: decode: buffer too small" );
snet_writef( sn, "%d Line too long\r\n", 540 );
return( 1 );
}
if (( d_path = strdup( d_path )) == NULL ) {
syslog( LOG_ERR, "f_stor: strdup: %s: %m", d_path );
return( -1 );
}
if ( d_path[ 0 ] == '/' ) {
if ( snprintf( upload, MAXPATHLEN, "tmp/%s/%s%s", loc, d_tran,
d_path ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
} else {
if ( snprintf( upload, MAXPATHLEN, "tmp/%s/%s/%s", loc, d_tran,
d_path ) >= MAXPATHLEN ) {
syslog( LOG_ERR, "f_stor: upload path too long" );
snet_writef( sn, "%d Path too long\r\n", 540 );
return( 1 );
}
}
free( d_path );
free( d_tran );
}
if (( fd = open( upload, O_CREAT|O_EXCL|O_WRONLY, 0666 )) < 0 ) {
if ( mkdirs( upload ) < 0 ) {
syslog( LOG_ERR, "f_stor: mkdir: %s: %m", upload );
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
if (( fd = open( upload, O_CREAT|O_EXCL|O_WRONLY, 0666 )) < 0 ) {
syslog( LOG_ERR, "f_stor: open: %s: %m", upload );
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
}
snet_writef( sn, "%d Storing file\r\n", 350 );
tv.tv_sec = 60;
tv.tv_usec = 0;
if ( ( sizebuf = snet_getline( sn, &tv ) ) == NULL ) {
syslog( LOG_ERR, "f_stor: snet_getline: %m" );
return( -1 );
}
/* Will there be a limit? */
len = strtoofft( sizebuf, NULL, 10 );
for ( ; len > 0; len -= rc ) {
tv.tv_sec = 60;
tv.tv_usec = 0;
if (( rc = snet_read(
sn, buf, MIN( len, sizeof( buf )), &tv )) <= 0 ) {
if ( snet_eof( sn )) {
syslog( LOG_ERR, "f_stor: snet_read: eof" );
} else {
syslog( LOG_ERR, "f_stor: snet_read: %m" );
}
return( -1 );
}
if ( write( fd, buf, rc ) != rc ) {
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
}
if ( len != 0 ) {
syslog( LOG_ERR, "f_stor: len is %" PRIofft "d", len );
snet_writef( sn, "%d %s: internal error!\r\n", 555, upload );
exit( 1 );
}
if ( close( fd ) < 0 ) {
snet_writef( sn, "%d %s: %s\r\n", 555, upload, strerror( errno ));
exit( 1 );
}
syslog( LOG_DEBUG, "f_stor: file %s stored", upload );
tv.tv_sec = 60;
tv.tv_usec = 0;
if (( line = snet_getline( sn, &tv )) == NULL ) {
syslog( LOG_ERR, "f_stor: snet_getline: %m" );
return( -1 );
}
/* make sure client agrees we're at the end */
if ( strcmp( line, "." ) != 0 ) {
syslog( LOG_ERR, "f_stor: line is: %s", line );
snet_writef( sn, "%d Length doesn't match sent data %s\r\n",
555, upload );
(void)unlink( upload );
exit( 1 );
}
snet_writef( sn, "%d File stored\r\n", 250 );
return( 0 );
}
int
f_repo( SNET *sn, int ac, char **av )
{
char *cn = "-";
char *d_msg;
if ( ac != 3 ) {
snet_writef( sn, "%d Syntax error (invalid parameters)\r\n", 501 );
return( 1 );
}
if (( d_msg = decode( av[ 2 ] )) == NULL ) {
syslog( LOG_ERR, "f_repo: decode: buffer too small" );
snet_writef( sn, "%d Syntax error (invalid parameter)\r\n", 501 );
return( 1 );
}