Source/AppController.m

   1 /*
   2  * PrintDrop
   3  * Copyright (c) 2008, Blue Static <http://www.bluestatic.org>
   4  *
   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.
   8  *
   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.
  12  *
  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
  15  */
  16
  17 #import "AppController.h"
  18 #import <libssh2.h>
  19 #import <sys/socket.h>
  20 #import <arpa/inet.h>
  21 #include <netdb.h>
  22
  23 @interface AppController (Private)
  24
  25 //- (BOOL)uploadFile;
  26 - (void)setStatus:(NSString *)msg isError:(BOOL)error;
  27
  28 @end
  29
  30
  31 @implementation AppController
  32
  33 /**
  34  * Set up the printer list
  35  */
  36 - (id)init
  37 {
  38         if (self = [super init])
  39         {
  40                 printers = [NSMutableArray array];
  41
  42                 NSArray *values = [NSArray arrayWithObjects:@"Double-Sided, Stapled $0.05", @"publp", nil];
  43                 NSArray *keys = [NSArray arrayWithObjects:@"displayName", @"unixName", nil];
  44                 [printers addObject:[NSDictionary dictionaryWithObjects:values forKeys:keys]];
  45
  46                 values = [NSArray arrayWithObjects:@"Single-Sided, Stapled $0.10", @"pubps", nil];
  47                 [printers addObject:[NSDictionary dictionaryWithObjects:values forKeys:keys]];
  48
  49                 values = [NSArray arrayWithObjects:@"Double-Sided, Not Stapled $0.05", @"publpns", nil];
  50                 [printers addObject:[NSDictionary dictionaryWithObjects:values forKeys:keys]];
  51
  52                 values = [NSArray arrayWithObjects:@"Single-Sided, Not Stapled $0.10", @"pubpsns", nil];
  53                 [printers addObject:[NSDictionary dictionaryWithObjects:values forKeys:keys]];
  54         }
  55         return self;
  56 }
  57
  58 /**
  59  * Sets the status text
  60  */
  61 - (void)setStatus:(NSString *)msg isError:(BOOL)error
  62 {
  63         [status setStringValue:msg];
  64         if (error)
  65         {
  66                 [status setTextColor:[NSColor redColor]];
  67                 [progress stopAnimation:self];
  68         }
  69         else
  70         {
  71                 [status setTextColor:[NSColor blackColor]];
  72         }
  73 }
  74
  75 /**
  76  * Sends an item to the printer
  77  */
  78 - (IBAction)print:(id)sender
  79 {
  80         [progress startAnimation:self];
  81         [progress setHidden:NO];
  82         [status setHidden:NO];
  83
  84         NSString *printer = [[printersController selection] valueForKey:@"unixName"];
  85         FILE *localFile;
  86         struct stat fileInfo;
  87
  88         [self setStatus:@"Connecting to acs.bu.edu" isError:NO];
  89         struct sockaddr_in sin;
  90         int sock = socket(AF_INET, SOCK_STREAM, 0);
  91         sin.sin_port = htons(22);
  92         sin.sin_family = AF_INET;
  93
  94         struct hostent *host = gethostbyname("acs.bu.edu");
  95         memcpy(&sin.sin_addr, host->h_addr_list[0], host->h_length);
  96
  97         if (connect(sock, (struct sockaddr *)(&sin), sizeof(struct sockaddr_in)) != 0)
  98         {
  99                 return [self setStatus:@"Could not connect to acs.bu.edu" isError:YES];
 100         }
 101
 102         LIBSSH2_SESSION *ssh = libssh2_session_init();
 103         if (ssh == NULL)
 104         {
 105                 return [self setStatus:@"Failed to initialize SSH context" isError:YES];
 106         }
 107
 108         if (libssh2_session_startup(ssh, sock))
 109         {
 110                 return [self setStatus:@"Could not tunnel over SSH" isError:YES];
 111         }
 112
 113         if (libssh2_userauth_password(ssh, [[username stringValue] UTF8String], [[password stringValue] UTF8String]))
 114         {
 115                 [self setStatus:@"Bad username/password" isError:YES];
 116                 goto shutdown;
 117         }
 118         /*
 119         stat([[dragRegion filePath] UTF8String], &fileInfo);
 120
 121         LIBSSH2_CHANNEL *channel = libssh2_scp_send(ssh, "~/tempupload.pdf", 0755, (unsigned long)fileInfo.st_size);
 122         if (!channel)
 123         {
 124                 [self setStatus:@"Unable to open upload SCP session" isError:YES];
 125                 goto shutdown;
 126         }
 127
 128         [self setStatus:@"Uploading file..." isError:NO];
 129
 130         localFile = fopen([[dragRegion filePath] UTF8String], "r");
 131         char buf[1024];
 132         char *pbuf;
 133         int numread, numwrote;
 134         do
 135         {
 136                 numread = fread(buf, 1, sizeof(buf), localFile);
 137                 if (numread <= 0)
 138                 {
 139                         break;
 140                 }
 141
 142                 pbuf = buf;
 143                 do
 144                 {
 145                         numwrote = libssh2_channel_write(channel, pbuf, numread);
 146                         pbuf += numwrote;
 147                         numread -= numread;
 148                 } while (numwrote > 0);
 149
 150         } while(1);
 151
 152         [self setStatus:@"File uploaded!" isError:NO];
 153
 154         libssh2_channel_send_eof(channel);
 155         libssh2_channel_wait_eof(channel);
 156         libssh2_channel_wait_closed(channel);
 157         libssh2_channel_free(channel);
 158         channel = NULL;
 159          */
 160
 161         LIBSSH2_CHANNEL *channel = libssh2_channel_open_session(ssh);
 162         if (!channel)
 163         {
 164                 [self setStatus:@"Could not open SSH channel for printing" isError:YES];
 165                 goto shutdown;
 166         }
 167
 168         if (libssh2_channel_request_pty(channel, "vanilla"))
 169         {
 170                 [self setStatus:@"Could not open ANSI TTY" isError:YES];
 171                 goto shutdown;
 172         }
 173
 174         if (libssh2_channel_shell(channel))
 175         {
 176                 [self setStatus:@"Failed to open remote shell" isError:YES];
 177                 goto shutdown;
 178         }
 179
 180         [self setStatus:@"Opened remote SSH shell" isError:NO];
 181
 182         libssh2_channel_flush_ex(channel, LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL);
 183
 184         /*
 185         char *e = malloc(1024 * sizeof(char));
 186         libssh2_session_last_error(ssh, &e, NULL, 0);
 187         NSLog(@"e = %s", e);
 188          */
 189
 190         libssh2_channel_set_blocking(channel, 0);
 191
 192         char b[1024];
 193         int r;
 194         do
 195         {
 196                 memset(&b, '\0', sizeof(b));
 197                 sleep(1);
 198                 r = libssh2_channel_read(channel, b, sizeof(b));
 199                 NSLog(@"b(%i) = %s", r, b);
 200         } while (r > 0);
 201
 202         char *cmd = "touch /u17/ugrad/rsesek/temp.foo\r\n\0";
 203         NSLog(@"numbytes = %i", libssh2_channel_write(channel, cmd, sizeof(char) * strlen(cmd)));
 204
 205         do
 206         {
 207                 memset(&b, '\0', sizeof(b));
 208                 sleep(1);
 209                 r = libssh2_channel_read(channel, b, sizeof(b));
 210                 NSLog(@"b(%i) = %s", r, b);
 211         } while (r > 0);
 212
 213         [self setStatus:@"Printed!" isError:NO];
 214
 215         libssh2_channel_send_eof(channel);
 216         libssh2_channel_eof(channel);
 217         libssh2_channel_close(channel);
 218
 219 shutdown:
 220         if (channel)
 221         {
 222                 libssh2_channel_free(channel);
 223                 channel = NULL;
 224         }
 225         libssh2_session_disconnect(ssh, "Normal disconnect.");
 226         libssh2_session_free(ssh);
 227
 228         close(sock);
 229
 230         [progress stopAnimation:self];
 231 }
 232
 233 @end