Initial import
[samba] / source / printing / print_iprint.c
diff --git a/source/printing/print_iprint.c b/source/printing/print_iprint.c
new file mode 100644 (file)
index 0000000..fc60667
--- /dev/null
@@ -0,0 +1,1241 @@
+/*
+ * Support code for Novell iPrint using the Common UNIX Printing
+ * System ("CUPS") libraries
+ *
+ * Copyright 1999-2003 by Michael R Sweet.
+ * Portions Copyright 2005 by Joel J. Smith.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+#include "printing.h"
+
+#ifdef HAVE_IPRINT
+#include <cups/cups.h>
+#include <cups/language.h>
+
+#define OPERATION_NOVELL_LIST_PRINTERS          0x401A
+#define OPERATION_NOVELL_MGMT                   0x401C
+#define NOVELL_SERVER_SYSNAME                  "sysname="
+#define NOVELL_SERVER_SYSNAME_NETWARE          "NetWare IA32"
+#define NOVELL_SERVER_VERSION_STRING           "iprintserverversion="
+#define NOVELL_SERVER_VERSION_OES_SP1          33554432
+
+/*
+ * 'iprint_passwd_cb()' - The iPrint password callback...
+ */
+
+static const char *                            /* O - Password or NULL */
+iprint_passwd_cb(const char *prompt)   /* I - Prompt */
+{
+       /*
+       * Always return NULL to indicate that no password is available...
+       */
+
+       return (NULL);
+}
+
+static const char *iprint_server(void)
+{
+       if ((lp_iprint_server() != NULL) && (strlen(lp_iprint_server()) > 0)) {
+               DEBUG(10, ("iprint server explicitly set to %s\n",
+                          lp_iprint_server()));
+               return lp_iprint_server();
+       }
+
+       DEBUG(10, ("iprint server left to default %s\n", cupsServer()));
+       return cupsServer();
+}
+
+/*
+ * Pass in an already connected http_t*
+ * Returns the server version if one can be found, multiplied by
+ * -1 for all NetWare versions.  Returns 0 if a server version
+ * cannot be determined
+ */
+
+static int iprint_get_server_version(http_t *http, char* serviceUri)
+{
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       ipp_attribute_t *attr;                  /* Current attribute */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            *ver;                   /* server version pointer */
+       char            *vertmp;                /* server version tmp pointer */
+       int             serverVersion = 0;      /* server version */
+       char            *os;                    /* server os */
+       int             osFlag = 0;             /* 0 for NetWare, 1 for anything else */
+       char            *temp;                  /* pointer for string manipulation */
+
+       /*
+       * Build an OPERATION_NOVELL_MGMT("get-server-version") request,
+       * which requires the following attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    operation-name
+       *    service-uri
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = OPERATION_NOVELL_MGMT;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+                    "service-uri", NULL, serviceUri);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                     "operation-name", NULL, "get-server-version");
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       if (((response = cupsDoRequest(http, request, "/ipp/")) == NULL) ||
+           (response->request.status.status_code >= IPP_OK_CONFLICT))
+               goto out;
+
+       if (((attr = ippFindAttribute(response, "server-version",
+                                     IPP_TAG_STRING)) != NULL)) {
+               if ((ver = strstr(attr->values[0].string.text,
+                                  NOVELL_SERVER_VERSION_STRING)) != NULL) {
+                       ver += strlen(NOVELL_SERVER_VERSION_STRING);
+                      /*
+                       * Strangely, libcups stores a IPP_TAG_STRING (octet
+                       * string) as a null-terminated string with no length
+                       * even though it could be binary data with nulls in
+                       * it.  Luckily, in this case the value is not binary.
+                       */
+                       serverVersion = strtol(ver, &vertmp, 10);
+
+                       /* Check for not found, overflow or negative version */
+                       if ((ver == vertmp) || (serverVersion < 0))
+                               serverVersion = 0;
+               }
+
+               if ((os = strstr(attr->values[0].string.text,
+                                  NOVELL_SERVER_SYSNAME)) != NULL) {
+                       os += strlen(NOVELL_SERVER_SYSNAME);
+                       if ((temp = strchr(os,'<')) != NULL)
+                               *temp = '\0';
+                       if (strcmp(os,NOVELL_SERVER_SYSNAME_NETWARE))
+                               osFlag = 1; /* 1 for non-NetWare systems */
+               }
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (osFlag == 0)
+               serverVersion *= -1;
+
+       return serverVersion;
+}
+
+
+static int iprint_cache_add_printer(http_t *http,
+                                  int reqId,
+                                  char* url)
+{
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       ipp_attribute_t *attr;                  /* Current attribute */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            *name,                  /* printer-name attribute */
+                       *info,                  /* printer-info attribute */
+                       smb_enabled,            /* smb-enabled attribute */
+                       secure;                 /* security-enabled attrib. */
+
+       char            *httpPath;      /* path portion of the printer-uri */
+
+       static const char *pattrs[] =   /* Requested printer attributes */
+                       {
+                         "printer-name",
+                         "security-enabled",
+                         "printer-info",
+                         "smb-enabled"
+                       };       
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
+       request->request.op.request_id   = reqId;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, url);
+
+       ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                     "requested-attributes",
+                     (sizeof(pattrs) / sizeof(pattrs[0])),
+                     NULL, pattrs);
+
+       /*
+        * Do the request and get back a response...
+        */
+
+       if ((httpPath = strstr(url,"://")) == NULL ||
+                       (httpPath = strchr(httpPath+3,'/')) == NULL)
+       {
+               ippDelete(request);
+               request = NULL;
+               goto out;
+       }
+
+       if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+               ipp_status_t lastErr = cupsLastError();
+
+              /*
+               * Ignore printers that cannot be queried without credentials
+               */
+               if (lastErr == IPP_FORBIDDEN || 
+                   lastErr == IPP_NOT_AUTHENTICATED ||
+                   lastErr == IPP_NOT_AUTHORIZED)
+                       goto out;
+
+               DEBUG(0,("Unable to get printer list - %s\n",
+                     ippErrorString(lastErr)));
+               goto out;
+       }
+
+       for (attr = response->attrs; attr != NULL;) {
+              /*
+               * Skip leading attributes until we hit a printer...
+               */
+
+               while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
+                       attr = attr->next;
+
+               if (attr == NULL)
+                       break;
+
+              /*
+               * Pull the needed attributes from this printer...
+               */
+
+               name       = NULL;
+               info       = NULL;
+               smb_enabled= 1;
+               secure     = 0;
+
+               while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
+                       if (strcmp(attr->name, "printer-name") == 0 &&
+                           attr->value_tag == IPP_TAG_NAME)
+                               name = attr->values[0].string.text;
+
+                       if (strcmp(attr->name, "printer-info") == 0 &&
+                           (attr->value_tag == IPP_TAG_TEXT ||
+                           attr->value_tag == IPP_TAG_TEXTLANG))
+                               info = attr->values[0].string.text;
+
+                      /*
+                       * If the smb-enabled attribute is present and the
+                       * value is set to 0, don't show the printer.
+                       * If the attribute is not present, assume that the
+                       * printer should show up
+                       */
+                       if (!strcmp(attr->name, "smb-enabled") &&
+                           ((attr->value_tag == IPP_TAG_INTEGER &&
+                           !attr->values[0].integer) ||
+                           (attr->value_tag == IPP_TAG_BOOLEAN &&
+                           !attr->values[0].boolean)))
+                               smb_enabled = 0;
+
+                      /*
+                       * If the security-enabled attribute is present and the
+                       * value is set to 1, don't show the printer.
+                       * If the attribute is not present, assume that the
+                       * printer should show up
+                       */
+                       if (!strcmp(attr->name, "security-enabled") &&
+                           ((attr->value_tag == IPP_TAG_INTEGER &&
+                           attr->values[0].integer) ||
+                           (attr->value_tag == IPP_TAG_BOOLEAN &&
+                           attr->values[0].boolean)))
+                               secure = 1;
+
+                       attr = attr->next;
+               }
+
+              /*
+               * See if we have everything needed...
+               * Make sure the printer is not a secure printer
+               * and make sure smb printing hasn't been explicitly
+               * disabled for the printer
+               */
+
+               if (name != NULL && !secure && smb_enabled) 
+                       pcap_cache_add(name, info);
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+       return(0);
+}
+
+BOOL iprint_cache_reload(void)
+{
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       ipp_attribute_t *attr;                  /* Current attribute */
+       cups_lang_t     *language = NULL;       /* Default language */
+       int             i;
+       BOOL ret = False;
+
+       DEBUG(5, ("reloading iprint printcap cache\n"));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Build a OPERATION_NOVELL_LIST_PRINTERS request, which requires the following attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = OPERATION_NOVELL_LIST_PRINTERS;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                    "ipp-server", NULL, "ippSrvr");
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       if ((response = cupsDoRequest(http, request, "/ipp")) == NULL) {
+               DEBUG(0,("Unable to get printer list - %s\n",
+                        ippErrorString(cupsLastError())));
+               goto out;
+       }
+
+       for (attr = response->attrs; attr != NULL;) {
+              /*
+               * Skip leading attributes until we hit a printer...
+               */
+
+               while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
+                       attr = attr->next;
+
+               if (attr == NULL)
+                       break;
+
+              /*
+               * Pull the needed attributes from this printer...
+               */
+
+               while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
+               {
+                       if (strcmp(attr->name, "printer-name") == 0 &&
+                           (attr->value_tag == IPP_TAG_URI ||
+                            attr->value_tag == IPP_TAG_NAME ||
+                            attr->value_tag == IPP_TAG_TEXT ||
+                            attr->value_tag == IPP_TAG_NAMELANG ||
+                            attr->value_tag == IPP_TAG_TEXTLANG))
+                       {
+                               for (i = 0; i<attr->num_values; i++)
+                               {
+                                       char *url = attr->values[i].string.text;
+                                       if (!url || !strlen(url))
+                                               continue;
+                                       iprint_cache_add_printer(http, i+2, url);
+                               }
+                       }
+                       attr = attr->next;
+               }
+       }
+
+       ret = True;
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return ret;
+}
+
+
+/*
+ * 'iprint_job_delete()' - Delete a job.
+ */
+
+static int iprint_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
+{
+       int             ret = 1;                /* Return value */
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            uri[HTTP_MAX_URI];      /* printer-uri attribute */
+       char            httpPath[HTTP_MAX_URI]; /* path portion of the printer-uri */
+
+
+       DEBUG(5,("iprint_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Build an IPP_CANCEL_JOB request, which uses the following
+       * attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    printer-uri
+       *    job-id
+       *    requesting-user-name
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_CANCEL_JOB;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), sharename);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+       ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+                    NULL, pjob->user);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", sharename);
+
+       if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+               if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+                       DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
+                               ippErrorString(cupsLastError())));
+               } else {
+                       ret = 0;
+               }
+       } else {
+               DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
+                       ippErrorString(cupsLastError())));
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return ret;
+}
+
+
+/*
+ * 'iprint_job_pause()' - Pause a job.
+ */
+
+static int iprint_job_pause(int snum, struct printjob *pjob)
+{
+       int             ret = 1;                /* Return value */
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            uri[HTTP_MAX_URI];      /* printer-uri attribute */
+       char            httpPath[HTTP_MAX_URI]; /* path portion of the printer-uri */
+
+
+       DEBUG(5,("iprint_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Build an IPP_HOLD_JOB request, which requires the following
+       * attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    printer-uri
+       *    job-id
+       *    requesting-user-name
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_HOLD_JOB;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+       ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+                    NULL, pjob->user);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+       if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+               if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+                       DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
+                               ippErrorString(cupsLastError())));
+               } else {
+                       ret = 0;
+               }
+       } else {
+               DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
+                       ippErrorString(cupsLastError())));
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return ret;
+}
+
+
+/*
+ * 'iprint_job_resume()' - Resume a paused job.
+ */
+
+static int iprint_job_resume(int snum, struct printjob *pjob)
+{
+       int             ret = 1;                /* Return value */
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            uri[HTTP_MAX_URI];      /* printer-uri attribute */
+       char            httpPath[HTTP_MAX_URI]; /* path portion of the printer-uri */
+
+
+       DEBUG(5,("iprint_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Build an IPP_RELEASE_JOB request, which requires the following
+       * attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    printer-uri
+       *    job-id
+       *    requesting-user-name
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_RELEASE_JOB;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+       ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+                    NULL, pjob->user);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+       if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+               if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+                       DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
+                               ippErrorString(cupsLastError())));
+               } else {
+                       ret = 0;
+               }
+       } else {
+               DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
+                       ippErrorString(cupsLastError())));
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return ret;
+}
+
+
+/*
+ * 'iprint_job_submit()' - Submit a job for printing.
+ */
+
+static int iprint_job_submit(int snum, struct printjob *pjob)
+{
+       int             ret = 1;                /* Return value */
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       ipp_attribute_t *attr;          /* Current attribute */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
+       char            *clientname = NULL;     /* hostname of client for job-originating-host attribute */
+
+       DEBUG(5,("iprint_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Build an IPP_PRINT_JOB request, which requires the following
+       * attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    printer-uri
+       *    requesting-user-name
+       *    [document-data]
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_PRINT_JOB;
+       request->request.op.request_id   = 1;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+                    "printer-uri", NULL, uri);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+                    NULL, pjob->user);
+
+       clientname = client_name();
+       if (strcmp(clientname, "UNKNOWN") == 0) {
+               clientname = client_addr();
+       }
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+                    "job-originating-host-name", NULL,
+                    clientname);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
+                    pjob->jobname);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(uri, sizeof(uri) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+       if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
+               if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+                       DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
+                                ippErrorString(cupsLastError())));
+               } else {
+                       ret = 0;
+               }
+       } else {
+               DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
+                        ippErrorString(cupsLastError())));
+       }
+
+       if ( ret == 0 )
+               unlink(pjob->filename);
+       /* else print_job_end will do it for us */
+
+       if ( ret == 0 ) {
+
+               attr = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER);
+               if (attr != NULL && attr->group_tag == IPP_TAG_JOB)
+               {
+                       pjob->sysjob = attr->values[0].integer;
+               }
+       }
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return ret;
+}
+
+/*
+ * 'iprint_queue_get()' - Get all the jobs in the print queue.
+ */
+
+static int iprint_queue_get(const char *sharename,
+                           enum printing_types printing_type,
+                           char *lpq_command,
+                           print_queue_struct **q, 
+                           print_status_struct *status)
+{
+       fstring         printername;
+       http_t          *http = NULL;           /* HTTP connection to server */
+       ipp_t           *request = NULL,        /* IPP Request */
+                       *response = NULL;       /* IPP Response */
+       ipp_attribute_t *attr = NULL;           /* Current attribute */
+       cups_lang_t     *language = NULL;       /* Default language */
+       char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
+       char            serviceUri[HTTP_MAX_URI]; /* service-uri attribute */
+       char            httpPath[HTTP_MAX_URI]; /* path portion of the uri */
+       int             jobUseUnixTime = 0;     /* Whether job times should
+                                                 * be assumed to be Unix time */
+       int             qcount = 0,             /* Number of active queue entries */
+                       qalloc = 0;             /* Number of queue entries allocated */
+       print_queue_struct *queue = NULL,       /* Queue entries */
+                       *temp;          /* Temporary pointer for queue */
+       const char      *user_name,     /* job-originating-user-name attribute */
+                       *job_name;      /* job-name attribute */
+       int             job_id;         /* job-id attribute */
+       int             job_k_octets;   /* job-k-octets attribute */
+       time_t          job_time;       /* time-at-creation attribute */
+       time_t          printer_current_time = 0;       /* printer's current time */
+       time_t          printer_up_time = 0;    /* printer's uptime */
+       ipp_jstate_t    job_status;     /* job-status attribute */
+       int             job_priority;   /* job-priority attribute */
+       static const char *jattrs[] =   /* Requested job attributes */
+                       {
+                         "job-id",
+                         "job-k-octets",
+                         "job-name",
+                         "job-originating-user-name",
+                         "job-priority",
+                         "job-state",
+                         "time-at-creation",
+                       };
+       static const char *pattrs[] =   /* Requested printer attributes */
+                       {
+                         "printer-state",
+                         "printer-state-message",
+                         "printer-current-time",
+                         "printer-up-time"
+                       };
+
+       *q = NULL;
+
+       /* HACK ALERT!!!  The porblem with support the 'printer name' 
+          option is that we key the tdb off the sharename.  So we will 
+          overload the lpq_command string to pass in the printername 
+          (which is basically what we do for non-cups printers ... using 
+          the lpq_command to get the queue listing). */
+
+       fstrcpy( printername, lpq_command );
+
+       DEBUG(5,("iprint_queue_get(%s, %p, %p)\n", printername, q, status));
+
+       /*
+       * Make sure we don't ask for passwords...
+       */
+
+       cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+       * Try to connect to the server...
+       */
+
+       if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+               DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+                        iprint_server(), strerror(errno)));
+               goto out;
+       }
+
+       /*
+       * Generate the printer URI and the service URI that goes with it...
+       */
+
+       slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), printername);
+       slprintf(serviceUri, sizeof(serviceUri) - 1, "ipp://%s/ipp/", iprint_server());
+
+       /*
+       * For Linux iPrint servers from OES SP1 on, the iPrint server
+       * uses Unix time for job start times unless it detects the iPrint
+       * client in an http User-Agent header.  (This was done to accomodate
+       * CUPS broken behavior.  According to RFC 2911, section 4.3.14, job
+       * start times are supposed to be relative to how long the printer has
+       * been up.)  Since libcups doesn't allow us to set that header before
+       * the request is sent, this ugly hack allows us to detect the server
+       * version and decide how to interpret the job time.
+       */
+       if (iprint_get_server_version(http, serviceUri) >=
+           NOVELL_SERVER_VERSION_OES_SP1)
+               jobUseUnixTime = 1;
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
+       request->request.op.request_id   = 2;
+
+       language = cupsLangDefault();
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+                    "printer-uri", NULL, uri);
+
+       ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                     "requested-attributes",
+                     (sizeof(pattrs) / sizeof(pattrs[0])),
+                     NULL, pattrs);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", printername);
+
+       if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+               DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
+                        ippErrorString(cupsLastError())));
+               *q = queue;
+               goto out;
+       }
+
+       if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+               DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
+                        ippErrorString(response->request.status.status_code)));
+               *q = queue;
+               goto out;
+       }
+
+       /*
+       * Get the current printer status and convert it to the SAMBA values.
+       */
+
+       if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
+               if (attr->values[0].integer == IPP_PRINTER_STOPPED)
+                       status->status = LPSTAT_STOPPED;
+               else
+                       status->status = LPSTAT_OK;
+       }
+
+       if ((attr = ippFindAttribute(response, "printer-state-message",
+                                    IPP_TAG_TEXT)) != NULL)
+               fstrcpy(status->message, attr->values[0].string.text);
+
+       if ((attr = ippFindAttribute(response, "printer-current-time",
+                                    IPP_TAG_DATE)) != NULL)
+               printer_current_time = ippDateToTime(attr->values[0].date);
+
+       if ((attr = ippFindAttribute(response, "printer-up-time",
+                                    IPP_TAG_INTEGER)) != NULL)
+               printer_up_time = attr->values[0].integer;
+
+       ippDelete(response);
+       response = NULL;
+
+       /*
+       * Build an IPP_GET_JOBS request, which requires the following
+       * attributes:
+       *
+       *    attributes-charset
+       *    attributes-natural-language
+       *    requested-attributes
+       *    printer-uri
+       */
+
+       request = ippNew();
+
+       request->request.op.operation_id = IPP_GET_JOBS;
+       request->request.op.request_id   = 3;
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+                    "attributes-charset", NULL, "utf-8");
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+                    "attributes-natural-language", NULL, language->language);
+
+       ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+                    "printer-uri", NULL, uri);
+
+       ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+                     "requested-attributes",
+                     (sizeof(jattrs) / sizeof(jattrs[0])),
+                     NULL, jattrs);
+
+       /*
+       * Do the request and get back a response...
+       */
+
+       slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", printername);
+
+       if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+               DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
+                        ippErrorString(cupsLastError())));
+               goto out;
+       }
+
+       if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+               DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
+                        ippErrorString(response->request.status.status_code)));
+               goto out;
+       }
+
+       /*
+       * Process the jobs...
+       */
+
+       qcount = 0;
+       qalloc = 0;
+       queue  = NULL;
+
+       for (attr = response->attrs; attr != NULL; attr = attr->next) {
+              /*
+               * Skip leading attributes until we hit a job...
+               */
+
+               while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
+                       attr = attr->next;
+
+               if (attr == NULL)
+                       break;
+
+              /*
+               * Allocate memory as needed...
+               */
+               if (qcount >= qalloc) {
+                       qalloc += 16;
+
+                       temp = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
+
+                       if (temp == NULL) {
+                               DEBUG(0,("iprint_queue_get: Not enough memory!"));
+                               qcount = 0;
+                               SAFE_FREE(queue);
+                               goto out;
+                       }
+
+                       queue = temp;
+               }
+
+               temp = queue + qcount;
+               memset(temp, 0, sizeof(print_queue_struct));
+
+              /*
+               * Pull the needed attributes from this job...
+               */
+
+               job_id       = 0;
+               job_priority = 50;
+               job_status   = IPP_JOB_PENDING;
+               job_time     = 0;
+               job_k_octets = 0;
+               user_name    = NULL;
+               job_name     = NULL;
+
+               while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
+                       if (attr->name == NULL) {
+                               attr = attr->next;
+                               break;
+                       }
+
+                       if (strcmp(attr->name, "job-id") == 0 &&
+                           attr->value_tag == IPP_TAG_INTEGER)
+                               job_id = attr->values[0].integer;
+
+                       if (strcmp(attr->name, "job-k-octets") == 0 &&
+                           attr->value_tag == IPP_TAG_INTEGER)
+                               job_k_octets = attr->values[0].integer;
+
+                       if (strcmp(attr->name, "job-priority") == 0 &&
+                           attr->value_tag == IPP_TAG_INTEGER)
+                               job_priority = attr->values[0].integer;
+
+                       if (strcmp(attr->name, "job-state") == 0 &&
+                           attr->value_tag == IPP_TAG_ENUM)
+                               job_status = (ipp_jstate_t)(attr->values[0].integer);
+
+                       if (strcmp(attr->name, "time-at-creation") == 0 &&
+                           attr->value_tag == IPP_TAG_INTEGER)
+                       {
+                              /*
+                               * If jobs times are in Unix time, the accuracy of the job
+                               * start time depends upon the iPrint server's time being
+                               * set correctly.  Otherwise, the accuracy depends upon
+                               * the Samba server's time being set correctly
+                               */
+
+                               if (jobUseUnixTime)
+                                       job_time = attr->values[0].integer; 
+                               else
+                                       job_time = time(NULL) - printer_up_time + attr->values[0].integer;
+                       }
+
+                       if (strcmp(attr->name, "job-name") == 0 &&
+                           (attr->value_tag == IPP_TAG_NAMELANG ||
+                            attr->value_tag == IPP_TAG_NAME))
+                               job_name = attr->values[0].string.text;
+
+                       if (strcmp(attr->name, "job-originating-user-name") == 0 &&
+                           (attr->value_tag == IPP_TAG_NAMELANG ||
+                            attr->value_tag == IPP_TAG_NAME))
+                               user_name = attr->values[0].string.text;
+
+                       attr = attr->next;
+               }
+
+              /*
+               * See if we have everything needed...
+               */
+
+               if (user_name == NULL || job_name == NULL || job_id == 0) {
+                       if (attr == NULL)
+                               break;
+                       else
+                               continue;
+               }
+
+               temp->job      = job_id;
+               temp->size     = job_k_octets * 1024;
+               temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
+                                job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
+                                 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
+                                 LPQ_PRINTING;
+               temp->priority = job_priority;
+               temp->time     = job_time;
+               strncpy(temp->fs_user, user_name, sizeof(temp->fs_user) - 1);
+               strncpy(temp->fs_file, job_name, sizeof(temp->fs_file) - 1);
+
+               qcount ++;
+
+               if (attr == NULL)
+                       break;
+       }
+
+       /*
+       * Return the job queue...
+       */
+
+       *q = queue;
+
+ out:
+       if (response)
+               ippDelete(response);
+
+       if (language)
+               cupsLangFree(language);
+
+       if (http)
+               httpClose(http);
+
+       return qcount;
+}
+
+
+/*
+ * 'iprint_queue_pause()' - Pause a print queue.
+ */
+
+static int iprint_queue_pause(int snum)
+{
+       return(-1); /* Not supported without credentials */
+}
+
+
+/*
+ * 'iprint_queue_resume()' - Restart a print queue.
+ */
+
+static int iprint_queue_resume(int snum)
+{
+       return(-1); /* Not supported without credentials */
+}
+
+/*******************************************************************
+ * iPrint printing interface definitions...
+ ******************************************************************/
+
+struct printif iprint_printif =
+{
+       PRINT_IPRINT,
+       iprint_queue_get,
+       iprint_queue_pause,
+       iprint_queue_resume,
+       iprint_job_delete,
+       iprint_job_pause,
+       iprint_job_resume,
+       iprint_job_submit,
+};
+
+#else
+ /* this keeps fussy compilers happy */
+ void print_iprint_dummy(void) {}
+#endif /* HAVE_IPRINT */