/* * Support code for the Common UNIX Printing System ("CUPS") * * Copyright 1999-2001 by Michael R Sweet * * 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 "printing.h" #include "smb.h" #ifdef HAVE_CUPS #include <cups/cups.h> #include <cups/language.h> /* * CUPS printing interface definitions... */ static int cups_job_delete(int snum, struct printjob *pjob); static int cups_job_pause(int snum, struct printjob *pjob); static int cups_job_resume(int snum, struct printjob *pjob); static int cups_job_submit(int snum, struct printjob *pjob); static int cups_queue_get(int snum, print_queue_struct **q, print_status_struct *status); static int cups_queue_pause(int snum); static int cups_queue_resume(int snum); struct printif cups_printif = { cups_queue_get, cups_queue_pause, cups_queue_resume, cups_job_delete, cups_job_pause, cups_job_resume, cups_job_submit, }; extern int DEBUGLEVEL; /* * 'cups_passwd_cb()' - The CUPS password callback... */ const char * /* O - Password or NULL */ cups_passwd_cb(const char *prompt) /* I - Prompt */ { /* * Always return NULL to indicate that no password is available... */ (void)prompt; return (NULL); } /* * 'cups_printer_fn()' - Call a function for every printer known to the * system. */ void cups_printer_fn(void (*fn)(char *, char *)) /* I - Function to call */ { http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ ipp_attribute_t *attr; /* Current attribute */ cups_lang_t *language; /* Default language */ char *name, /* printer-name attribute */ *make_model, /* printer-make-and-model attribute */ *info; /* printer-info attribute */ static const char *requested[] =/* Requested attributes */ { "printer-name", "printer-make-and-model", "printer-info" }; DEBUG(5,("cups_printer_fn(%p)\n", fn)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return; } /* * Build a CUPS_GET_PRINTERS request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * requested-attributes */ request = ippNew(); request->request.op.operation_id = CUPS_GET_PRINTERS; request->request.op.request_id = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requested-attributes", (sizeof(requested) / sizeof(requested[0])), NULL, requested); /* * Do the request and get back a response... */ if ((response = cupsDoRequest(http, request, "/")) == NULL) { DEBUG(0,("Unable to get printer list - %s\n", ippErrorString(cupsLastError()))); httpClose(http); return; } 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; make_model = NULL; info = NULL; 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-make-and-model") == 0 && attr->value_tag == IPP_TAG_TEXT) make_model = attr->values[0].string.text; if (strcmp(attr->name, "printer-info") == 0 && attr->value_tag == IPP_TAG_TEXT) info = attr->values[0].string.text; attr = attr->next; } /* * See if we have everything needed... */ if (name == NULL) break; if (info == NULL || !info[0]) (*fn)(name, make_model); else (*fn)(name,info); } ippDelete(response); httpClose(http); } /* * 'cups_printername_ok()' - Provide the equivalent of pcap_printername_ok() * for CUPS. */ int /* O - 1 if printer name OK */ cups_printername_ok(char *name) /* I - Name of printer */ { http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_printername_ok(\"%s\")\n", name)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (0); } /* * Build an IPP_GET_PRINTER_ATTRS request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * requested-attributes * printer-uri */ request = ippNew(); request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES; request->request.op.request_id = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requested-attributes", NULL, "printer-uri"); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", name); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri); /* * Do the request and get back a response... */ if ((response = cupsDoRequest(http, request, "/")) == NULL) { DEBUG(0,("Unable to get printer status for %s - %s\n", name, ippErrorString(cupsLastError()))); httpClose(http); return (0); } httpClose(http); if (response->request.status.status_code >= IPP_OK_CONFLICT) { DEBUG(0,("Unable to get printer status for %s - %s\n", name, ippErrorString(response->request.status.status_code))); ippDelete(response); return (0); } else { ippDelete(response); return (1); } } /* * 'cups_job_delete()' - Delete a job. */ static int cups_job_delete(int snum, struct printjob *pjob) { int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_job_delete(%d, %p (%d))\n", snum, pjob, pjob->sysjob)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * Build an IPP_CANCEL_JOB request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * job-uri * 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, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name", NULL, pjob->user); /* * Do the request and get back a response... */ ret = 1; if ((response = cupsDoRequest(http, request, "/jobs")) != 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; ippDelete(response); } else DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob, ippErrorString(cupsLastError()))); httpClose(http); return (ret); } /* * 'cups_job_pause()' - Pause a job. */ static int cups_job_pause(int snum, struct printjob *pjob) { int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * Build an IPP_HOLD_JOB request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * job-uri * 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, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name", NULL, pjob->user); /* * Do the request and get back a response... */ ret = 1; if ((response = cupsDoRequest(http, request, "/jobs")) != 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; ippDelete(response); } else DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob, ippErrorString(cupsLastError()))); httpClose(http); return (ret); } /* * 'cups_job_resume()' - Resume a paused job. */ static int cups_job_resume(int snum, struct printjob *pjob) { int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * Build an IPP_RELEASE_JOB request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * job-uri * 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, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name", NULL, pjob->user); /* * Do the request and get back a response... */ ret = 1; if ((response = cupsDoRequest(http, request, "/jobs")) != 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; ippDelete(response); } else DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob, ippErrorString(cupsLastError()))); httpClose(http); return (ret); } /* * 'cups_job_submit()' - Submit a job for printing. */ static int cups_job_submit(int snum, struct printjob *pjob) { int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * 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, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", 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); 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, "/printers/%s", PRINTERNAME(snum)); ret = 1; 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; ippDelete(response); } else DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); httpClose(http); return (ret); } /* * 'cups_queue_get()' - Get all the jobs in the print queue. */ static int cups_queue_get(int snum, print_queue_struct **q, print_status_struct *status) { http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ ipp_attribute_t *attr; /* Current attribute */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ int qcount, /* Number of active queue entries */ qalloc; /* Number of queue entries allocated */ print_queue_struct *queue, /* 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 */ 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" }; DEBUG(5,("cups_queue_get(%d, %p, %p)\n", snum, q, status)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (0); } /* * Generate the printer URI... */ slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", PRINTERNAME(snum)); /* * 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 = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requested-attributes", (sizeof(jattrs) / sizeof(jattrs[0])), NULL, jattrs); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri); /* * Do the request and get back a response... */ if ((response = cupsDoRequest(http, request, "/")) == NULL) { DEBUG(0,("Unable to get jobs for %s - %s\n", uri, ippErrorString(cupsLastError()))); httpClose(http); return (0); } 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))); ippDelete(response); httpClose(http); return (0); } /* * 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 = Realloc(queue, sizeof(print_queue_struct) * qalloc); if (temp == NULL) { DEBUG(0,("cups_queue_get: Not enough memory!")); ippDelete(response); httpClose(http); free (queue); return (0); } 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) job_time = attr->values[0].integer; if (strcmp(attr->name, "job-name") == 0 && 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_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->user, user_name, sizeof(temp->user) - 1); strncpy(temp->file, job_name, sizeof(temp->file) - 1); qcount ++; if (attr == NULL) break; } ippDelete(response); /* * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the * following attributes: * * attributes-charset * attributes-natural-language * requested-attributes * printer-uri */ request = ippNew(); request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES; request->request.op.request_id = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requested-attributes", (sizeof(pattrs) / sizeof(pattrs[0])), NULL, pattrs); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri); /* * Do the request and get back a response... */ if ((response = cupsDoRequest(http, request, "/")) == NULL) { DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); httpClose(http); *q = queue; return (qcount); } if (response->request.status.status_code >= IPP_OK_CONFLICT) { DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum), ippErrorString(response->request.status.status_code))); ippDelete(response); httpClose(http); *q = queue; return (qcount); } /* * 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); ippDelete(response); /* * Return the job queue... */ httpClose(http); *q = queue; return (qcount); } /* * 'cups_queue_pause()' - Pause a print queue. */ static int cups_queue_pause(int snum) { extern userdom_struct current_user_info; int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_queue_pause(%d)\n", snum)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * Build an IPP_PAUSE_PRINTER request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * printer-uri * requesting-user-name */ request = ippNew(); request->request.op.operation_id = IPP_PAUSE_PRINTER; request->request.op.request_id = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", 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, current_user_info.unix_name); /* * Do the request and get back a response... */ ret = 1; if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) { if (response->request.status.status_code >= IPP_OK_CONFLICT) DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); else ret = 0; ippDelete(response); } else DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); httpClose(http); return (ret); } /* * 'cups_queue_resume()' - Restart a print queue. */ static int cups_queue_resume(int snum) { extern userdom_struct current_user_info; int ret; /* Return value */ http_t *http; /* HTTP connection to server */ ipp_t *request, /* IPP Request */ *response; /* IPP Response */ cups_lang_t *language; /* Default language */ char uri[HTTP_MAX_URI]; /* printer-uri attribute */ DEBUG(5,("cups_queue_resume(%d)\n", snum)); /* * Make sure we don't ask for passwords... */ cupsSetPasswordCB(cups_passwd_cb); /* * Try to connect to the server... */ if ((http = httpConnect(cupsServer(), ippPort())) == NULL) { DEBUG(0,("Unable to connect to CUPS server %s - %s\n", cupsServer(), strerror(errno))); return (1); } /* * Build an IPP_RESUME_PRINTER request, which requires the following * attributes: * * attributes-charset * attributes-natural-language * printer-uri * requesting-user-name */ request = ippNew(); request->request.op.operation_id = IPP_RESUME_PRINTER; request->request.op.request_id = 1; language = cupsLangDefault(); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(language)); ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, language->language); slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", 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, current_user_info.unix_name); /* * Do the request and get back a response... */ ret = 1; if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) { if (response->request.status.status_code >= IPP_OK_CONFLICT) DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); else ret = 0; ippDelete(response); } else DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum), ippErrorString(cupsLastError()))); httpClose(http); return (ret); } #else /* this keeps fussy compilers happy */ void print_cups_dummy(void) {} #endif /* HAVE_CUPS */