3 * Copyright (c) 2008, Blue Static <http://www.bluestatic.org>
5 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
6 * General Public License as published by the Free Software Foundation; either version 2 of the
7 * License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
10 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along with this program; if not,
14 * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
17 #import "AppController.h"
19 #import <sys/socket.h>
23 @interface AppController (Private
)
25 - (void)setStatus
:(NSString
*)msg isError
:(BOOL)error
;
27 - (void)readChannel
:(LIBSSH2_CHANNEL
*)channel
;
28 - (void)uploadAndPrint
:(id)sender
;
33 @implementation AppController
36 * Set up the printer list
40 if (self = [super init
])
42 printers
= [NSArray arrayWithContentsOfFile
:[[NSBundle mainBundle
] pathForResource
:@
"Printers" ofType
:@
"plist"]];
43 [NSThread detachNewThreadSelector
:@selector(versionCheck
:) toTarget
:self withObject
:self];
49 * Checks and sees if the current version is the most up-to-date one
51 - (void)versionCheck
:(id)sender
53 NSAutoreleasePool
*pool
= [[NSAutoreleasePool alloc
] init
];
55 NSMutableString
*version
= [NSMutableString stringWithString
:[[[NSBundle mainBundle
] infoDictionary
] valueForKey
:@
"CFBundleShortVersionString"]];
56 [version replaceOccurrencesOfString
:@
" " withString
:@
"-" options
:NSLiteralSearch range
:NSMakeRange(0, [version length
])];
58 NSURL
*url
= [NSURL URLWithString
:[NSString stringWithFormat
:@
"http://www.bluestatic.org/versioncheck.php?prod=printdrop&ver=%@", version
]];
59 NSURLRequest
*request
= [NSURLRequest requestWithURL
:url cachePolicy
:NSURLRequestReloadIgnoringCacheData timeoutInterval
:10];
60 NSURLResponse
*response
;
61 NSData
*result
= [NSURLConnection sendSynchronousRequest
:request returningResponse
:&response error
:nil];
68 NSXMLDocument
*xml
= [[NSXMLDocument alloc
] initWithData
:result options
:0 error
:nil];
69 NSXMLNode
*comp
= [[xml rootElement
] childAtIndex
:0];
70 if ([[comp name
] isEqualToString
:@
"update"])
72 [updateString setStringValue
:[NSString stringWithFormat
:[updateString stringValue
], [comp stringValue
]]];
73 [updateWindow makeKeyAndOrderFront
:self];
82 * Opens the URL to the download page
84 - (IBAction
)openUpdateInformation
:(id)sender
86 [[NSWorkspace sharedWorkspace
] openURL
:[NSURL URLWithString
:@
"http://www.bluestatic.org/software/printdrop/"]];
90 * Sets the status text
92 - (void)setStatus
:(NSString
*)msg isError
:(BOOL)error
94 [status setStringValue
:msg
];
97 [status setTextColor
:[NSColor redColor
]];
98 [progress stopAnimation
:self];
102 [status setTextColor
:[NSColor blackColor
]];
107 * Reads through a channel (in non-blocking) mode until there is no more left to read
108 * and then it returns. This calls sleep(1) so that the channel can have time to process.
109 * Be sure this is threaded otherwis the interface will stall.
111 - (void)readChannel
:(LIBSSH2_CHANNEL
*)channel
113 libssh2_channel_set_blocking(channel
, 0);
119 memset(&buf
, '\0', sizeof(buf
));
120 numbytes
= libssh2_channel_read(channel
, buf
, sizeof(buf
));
123 NSLog(@
"buf: %s", buf
);
125 } while (libssh2_poll_channel_read(channel
, 0));
129 * Sends an item to the printer
131 - (IBAction
)print
:(id)sender
133 [NSThread detachNewThreadSelector
:@selector(uploadAndPrint
:) toTarget
:self withObject
:sender
];
137 * Opens an SSH session, creates a SCP channel to upload the file, followed by a shell channel
140 - (void)uploadAndPrint
:(id)sender
142 NSAutoreleasePool
*pool
= [[NSAutoreleasePool alloc
] init
];
144 [progress startAnimation
:self];
145 [progress setHidden
:NO
];
146 [status setHidden
:NO
];
149 struct stat fileInfo
;
151 [self setStatus
:@
"Connecting to acs.bu.edu" isError
:NO
];
152 struct sockaddr_in sin
;
153 int sock
= socket(AF_INET
, SOCK_STREAM
, 0);
154 sin.sin_port
= htons(22);
155 sin.sin_family
= AF_INET
;
157 struct hostent
*host
= gethostbyname("acs.bu.edu");
158 memcpy(&sin.sin_addr
, host
->h_addr_list
[0], host
->h_length
);
160 if (stat([[dragRegion filePath
] UTF8String
], &fileInfo
))
162 return [self setStatus
:@
"Invalid file selected" isError
:YES
];
165 if (connect(sock
, (struct sockaddr
*)(&sin
), sizeof(struct sockaddr_in
)) != 0)
167 return [self setStatus
:@
"Could not connect to acs.bu.edu" isError
:YES
];
170 LIBSSH2_SESSION
*ssh
= libssh2_session_init();
173 return [self setStatus
:@
"Failed to initialize SSH context" isError
:YES
];
176 if (libssh2_session_startup(ssh
, sock
))
178 return [self setStatus
:@
"Could not tunnel over SSH" isError
:YES
];
181 if (libssh2_userauth_password(ssh
, [[username stringValue
] UTF8String
], [[password stringValue
] UTF8String
]))
183 [self setStatus
:@
"Bad username/password" isError
:YES
];
187 LIBSSH2_CHANNEL
*channel
= libssh2_scp_send(ssh
, "~/__bu_print_drop__.pdf", 0755, (unsigned long)fileInfo.st_size
);
190 [self setStatus
:@
"Unable to open upload SCP session" isError
:YES
];
194 [self setStatus
:@
"Uploading file..." isError
:NO
];
196 localFile
= fopen([[dragRegion filePath
] UTF8String
], "r");
199 int numread
, numwrote
;
202 numread
= fread(buf
, 1, sizeof(buf
), localFile
);
211 numwrote
= libssh2_channel_write(channel
, pbuf
, numread
);
214 } while (numwrote
> 0);
218 [self setStatus
:@
"File uploaded!" isError
:NO
];
220 libssh2_channel_send_eof(channel
);
221 libssh2_channel_wait_eof(channel
);
222 libssh2_channel_wait_closed(channel
);
223 libssh2_channel_free(channel
);
226 channel
= libssh2_channel_open_session(ssh
);
229 [self setStatus
:@
"Could not open SSH channel for printing" isError
:YES
];
233 if (libssh2_channel_request_pty(channel
, "vanilla"))
235 [self setStatus
:@
"Could not open ANSI TTY" isError
:YES
];
239 if (libssh2_channel_shell(channel
))
241 [self setStatus
:@
"Failed to open remote shell" isError
:YES
];
245 [self setStatus
:@
"Opened remote SSH shell" isError
:NO
];
248 [self readChannel
:channel
];
250 // send the job to lpr
253 NSString
*printer
= [[printersController selection
] valueForKey
:@
"unixName"];
254 cmd
= (char *)[[NSString stringWithFormat
:@
"lpr -m -P%@ __bu_print_drop__.pdf\r\n\0", printer
] UTF8String
];
256 cmd
= "touch abc.def\r\n\0";
258 libssh2_channel_write(channel
, cmd
, sizeof(char) * strlen(cmd
));
259 [self readChannel
:channel
];
261 // remove our temp file
262 cmd
= "rm -f __bu_print_drop__.pdf\r\n\0";
263 libssh2_channel_write(channel
, cmd
, sizeof(char) * strlen(cmd
));
264 [self readChannel
:channel
];
266 [self setStatus
:@
"Printed!" isError
:NO
];
268 libssh2_channel_send_eof(channel
);
269 libssh2_channel_eof(channel
);
270 libssh2_channel_close(channel
);
275 //libssh2_channel_free(channel);
278 libssh2_session_disconnect(ssh
, "Normal disconnect.");
279 libssh2_session_free(ssh
);
283 [progress stopAnimation
:self];