scheduler/client.h

   1 /*
   2  * "$Id: client.h 6205 2007-01-22 22:04:43Z mike $"
   3  *
   4  *   Client definitions for the Common UNIX Printing System (CUPS) scheduler.
   5  *
   6  *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
   7  *
   8  *   These coded instructions, statements, and computer programs are the
   9  *   property of Easy Software Products and are protected by Federal
  10  *   copyright law.  Distribution and use rights are outlined in the file
  11  *   "LICENSE.txt" which should have been included with this file.  If this
  12  *   file is missing or damaged please contact Easy Software Products
  13  *   at:
  14  *
  15  *       Attn: CUPS Licensing Information
  16  *       Easy Software Products
  17  *       44141 Airport View Drive, Suite 204
  18  *       Hollywood, Maryland 20636 USA
  19  *
  20  *       Voice: (301) 373-9600
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  */
  24
  25 /*
  26  * HTTP client structure...
  27  */
  28
  29 struct cupsd_client_s
  30 {
  31   http_t                http;           /* HTTP client connection */
  32   ipp_t                 *request,       /* IPP request information */
  33                         *response;      /* IPP response information */
  34   cupsd_location_t      *best;          /* Best match for AAA */
  35   time_t                start;          /* Request start time */
  36   http_state_t          operation;      /* Request operation */
  37   off_t                 bytes;          /* Bytes transferred for this request */
  38   char                  username[33],   /* Username from Authorization: line */
  39                         password[33],   /* Password from Authorization: line */
  40                         uri[HTTP_MAX_URI],
  41                                         /* Localized URL/URI for GET/PUT */
  42                         *filename,      /* Filename of output file */
  43                         *command,       /* Command to run */
  44                         *options,       /* Options for command */
  45                         *query_string;  /* QUERY_STRING environment variable */
  46   int                   file;           /* Input/output file */
  47   int                   file_ready;     /* Input ready on file/pipe? */
  48   int                   pipe_pid;       /* Pipe process ID (or 0 if not a pipe) */
  49   int                   sent_header,    /* Non-zero if sent HTTP header */
  50                         got_fields,     /* Non-zero if all fields seen */
  51                         field_col;      /* Column within line */
  52   cups_lang_t           *language;      /* Language to use */
  53 #ifdef HAVE_SSL
  54   int                   auto_ssl;       /* Automatic test for SSL/TLS */
  55 #endif /* HAVE_SSL */
  56   http_addr_t           clientaddr;     /* Client address */
  57   char                  servername[256];/* Server name for connection */
  58   int                   serverport;     /* Server port for connection */
  59 };
  60
  61 #define HTTP(con) &((con)->http)
  62
  63
  64 /*
  65  * HTTP listener structure...
  66  */
  67
  68 typedef struct
  69 {
  70   int                   fd;             /* File descriptor for this server */
  71   http_addr_t           address;        /* Bind address of socket */
  72   http_encryption_t     encryption;     /* To encrypt or not to encrypt... */
  73 } cupsd_listener_t;
  74
  75
  76 /*
  77  * Globals...
  78  */
  79
  80 VAR int                 ListenBackLog   VALUE(SOMAXCONN),
  81                                         /* Max backlog of pending connections */
  82                         LocalPort       VALUE(631);
  83                                         /* Local port to use */
  84 VAR http_encryption_t   LocalEncryption VALUE(HTTP_ENCRYPT_IF_REQUESTED);
  85                                         /* Local port encryption to use */
  86 VAR cups_array_t        *Listeners      VALUE(NULL);
  87                                         /* Listening sockets */
  88 VAR cups_array_t        *Clients        VALUE(NULL);
  89                                         /* HTTP clients */
  90 VAR http_addrlist_t     *ServerAddrs    VALUE(NULL);
  91                                         /* Server address(es) */
  92 VAR char                *ServerHeader   VALUE(NULL);
  93                                         /* Server header in requests */
  94 VAR int                 CGIPipes[2]     VALUE2(-1,-1);
  95                                         /* Pipes for CGI error/debug output */
  96 VAR cupsd_statbuf_t     *CGIStatusBuffer VALUE(NULL);
  97                                         /* Status buffer for pipes */
  98
  99
 100 /*
 101  * Prototypes...
 102  */
 103
 104 extern void     cupsdAcceptClient(cupsd_listener_t *lis);
 105 extern void     cupsdCloseAllClients(void);
 106 extern int      cupsdCloseClient(cupsd_client_t *con);
 107 extern void     cupsdDeleteAllListeners(void);
 108 extern int      cupsdFlushHeader(cupsd_client_t *con);
 109 extern void     cupsdPauseListening(void);
 110 extern int      cupsdProcessIPPRequest(cupsd_client_t *con);
 111 extern int      cupsdReadClient(cupsd_client_t *con);
 112 extern void     cupsdResumeListening(void);
 113 extern int      cupsdSendCommand(cupsd_client_t *con, char *command,
 114                                  char *options, int root);
 115 extern int      cupsdSendError(cupsd_client_t *con, http_status_t code);
 116 extern int      cupsdSendHeader(cupsd_client_t *con, http_status_t code,
 117                                 char *type);
 118 extern void     cupsdShutdownClient(cupsd_client_t *con);
 119 extern void     cupsdStartListening(void);
 120 extern void     cupsdStopListening(void);
 121 extern void     cupsdUpdateCGI(void);
 122 extern int      cupsdWriteClient(cupsd_client_t *con);
 123
 124
 125 /*
 126  * End of "$Id: client.h 6205 2007-01-22 22:04:43Z mike $".
 127  */