ipp.gz_IPP_ipp 打印_ipp.gz_ipp打印原理_linux打印机

/* * "$Id: ipp.c,v 1.235 2005/01/03 19:29:59 mike Exp $" * * Contents: * * ProcessIPPRequest() - Process an incoming IPP request... * accept_jobs() - Accept print jobs to a printer. * add_class() - Add a class to the system. * add_file() - Add a file to a job. * add_job_state_reasons() - Add the "job-state-reasons" attribute based * upon the job and printer state... * add_printer() - Add a printer to the system. * add_printer_state_reasons() - Add the "printer-state-reasons" attribute * based upon the printer state... * add_queued_job_count() - Add the "queued-job-count" attribute for * cancel_all_jobs() - Cancel all print jobs. * cancel_job() - Cancel a print job. * check_quotas() - Check quotas for a printer and user. * copy_attribute() - Copy a single attribute. * copy_attrs() - Copy attributes from one request to another. * copy_banner() - Copy a banner file to the requests directory * for the specified job. * copy_file() - Copy a PPD file or interface script... * copy_model() - Copy a PPD model file, substituting default * values as needed... * create_job() - Print a file to a printer or class. * delete_printer() - Remove a printer or class from the system. * get_default() - Get the default destination. * get_devices() - Get the list of available devices on the * local system. * get_jobs() - Get a list of jobs for the specified printer. * get_job_attrs() - Get job attributes. * get_ppds() - Get the list of PPD files on the local * system. * get_printer_attrs() - Get printer attributes. * get_printers() - Get a list of printers. * hold_job() - Hold a print job. * move_job() - Move a job to a new destination. * ppd_add_default() - Add a PPD default choice. * ppd_parse_line() - Parse a PPD default line. * print_job() - Print a file to a printer or class. * read_ps_line() - Read a line from a PS file... * read_ps_job_ticket() - Reads a job ticket embedded in a PS file. * reject_jobs() - Reject print jobs to a printer. * release_job() - Release a held print job. * restart_job() - Restart an old print job. * send_document() - Send a file to a printer or class. * send_ipp_error() - Send an error status back to the IPP client. * set_default() - Set the default destination... * set_job_attrs() - Set job attributes. * start_printer() - Start a printer. * stop_printer() - Stop a printer. * validate_job() - Validate printer options and destination. * validate_user() - Validate the user for the request. */ /* * Include necessary headers... */ #include "cupsd.h" #include <pwd.h> #include <grp.h> #ifndef agan4014 #include "job.h" #endif #ifdef HAVE_LIBPAPER # include <paper.h> #endif /* HAVE_LIBPAPER */ #ifndef agan4014 job_t *Jobs = NULL; #endif /* * Local functions... */ #if 0 /* * PPD default choice structure... */ typedef struct { char option[PPD_MAX_NAME]; /* Main keyword (option name) */ char choice[PPD_MAX_NAME]; /* Option keyword (choice name) */ } ppd_default_t; static int add_file(client_t *con, job_t *job, mime_type_t *filetype, int compression); static void accept_jobs(client_t *con, ipp_attribute_t *uri); static void add_class(client_t *con, ipp_attribute_t *uri); static void add_job_state_reasons(client_t *con, job_t *job); static void cancel_all_jobs(client_t *con, ipp_attribute_t *uri); static void cancel_job(client_t *con, ipp_attribute_t *uri); static int check_quotas(client_t *con, printer_t *p); static int copy_banner(client_t *con, job_t *job, const char *name); static int copy_file(const char *from, const char *to); static int copy_model(const char *from, const char *to); static void create_job(client_t *con, ipp_attribute_t *uri); static void delete_printer(client_t *con, ipp_attribute_t *uri); static void get_default(client_t *con); static void get_devices(client_t *con); static void get_job_attrs(client_t *con, ipp_attribute_t *uri); static void get_ppds(client_t *con); static void get_printers(client_t *con, int type); static void hold_job(client_t *con, ipp_attribute_t *uri); static void move_job(client_t *con, ipp_attribute_t *uri); static int ppd_add_default(const char *option, const char *choice, int num_defaults, ppd_default_t **defaults); static int ppd_parse_line(const char *line, char *option, int olen, char *choice, int clen); static void read_ps_job_ticket(client_t *con); static void reject_jobs(client_t *con, ipp_attribute_t *uri); static void release_job(client_t *con, ipp_attribute_t *uri); static void restart_job(client_t *con, ipp_attribute_t *uri); static void send_document(client_t *con, ipp_attribute_t *uri); static void set_default(client_t *con, ipp_attribute_t *uri); static void set_job_attrs(client_t *con, ipp_attribute_t *uri); static void start_printer(client_t *con, ipp_attribute_t *uri); static void stop_printer(client_t *con, ipp_attribute_t *uri); static void validate_job(client_t *con, ipp_attribute_t *uri); static int validate_user(client_t *con, const char *owner, char *username, int userlen); static void add_printer(client_t *con, ipp_attribute_t *uri); #endif static void send_ipp_error(client_t *con, ipp_status_t status); static void print_job(client_t *con, ipp_attribute_t *uri); static void get_jobs(client_t *con, ipp_attribute_t *uri); static void get_printer_attrs(client_t *con, ipp_attribute_t *uri); static void add_printer_state_reasons(client_t *con, printer_t *p); static void add_queued_job_count(client_t *con, printer_t *p); static ipp_attribute_t *copy_attribute(ipp_t *to, ipp_attribute_t *attr, int quickcopy); static void copy_attrs(ipp_t *to, ipp_t *from, ipp_attribute_t *req, ipp_tag_t group, int quickcopy); /* * 'ProcessIPPRequest()' - Process an incoming IPP request... */ int /* O - 1 on success, 0 on failure */ ProcessIPPRequest(client_t *con) /* I - Client connection */ { ipp_tag_t group; /* Current group tag */ ipp_attribute_t *attr; /* Current attribute */ ipp_attribute_t *charset; /* Character set attribute */ ipp_attribute_t *language; /* Language attribute */ ipp_attribute_t *uri; /* Printer URI attribute */ ipp_attribute_t *username; /* requesting-user-name attr */ DEBUG_printf(("Function ProcessIPPRequest() start......\n")); LogMessage(L_DEBUG2, "ProcessIPPRequest(%p[%d]): operation_id = %04x", con, con->http.fd, con->request->request.op.operation_id); /* * First build an empty response message for this request... */ con->response = ippNew(); con->response->request.status.version[0] = con->request->request.op.version[0]; con->response->request.status.version[1] = con->request->request.op.version[1]; con->response->request.status.request_id = con->request->request.op.request_id; /* * Then validate the request header and required attributes... */ if (con->request->request.any.version[0] != 1) { /* * Return an error, since we only support IPP 1.x. */ LogMessage(L_ERROR, "ProcessIPPRequest: bad request version (%d.%d)!", con->request->request.any.version[0], con->request->request.any.versi