static void read_config_ppd() { ppd_option_t *option; ppd_file_t *ppd_file; char * ppd_name; ppd_name = getenv("PPD"); if (ppd_name == NULL) { log_event(CPERROR, "Could not retrieve PPD name"); return; } ppd_file = ppdOpenFile(ppd_name); if (ppd_file == NULL) { log_event(CPERROR, "Could not open PPD file: %s", ppd_name); return; } ppdMarkDefaults(ppd_file); option = ppdFirstOption(ppd_file); while (option != NULL) { _assign_value(SEC_PPD, option->keyword, option->defchoice); option = ppdNextOption(ppd_file); } ppdClose(ppd_file); return; }
int /* O - Number of conflicts found */ ppdConflicts(ppd_file_t *ppd) /* I - PPD to check */ { int i, /* Looping variable */ conflicts; /* Number of conflicts */ cups_array_t *active; /* Active conflicts */ _ppd_cups_uiconsts_t *c; /* Current constraints */ _ppd_cups_uiconst_t *cptr; /* Current constraint */ ppd_option_t *o; /* Current option */ if (!ppd) return (0); /* * Clear all conflicts... */ cupsArraySave(ppd->options); for (o = ppdFirstOption(ppd); o; o = ppdNextOption(ppd)) o->conflicted = 0; cupsArrayRestore(ppd->options); /* * Test for conflicts... */ active = ppd_test_constraints(ppd, NULL, NULL, 0, NULL, _PPD_ALL_CONSTRAINTS); conflicts = cupsArrayCount(active); /* * Loop through all of the UI constraints and flag any options * that conflict... */ for (c = (_ppd_cups_uiconsts_t *)cupsArrayFirst(active); c; c = (_ppd_cups_uiconsts_t *)cupsArrayNext(active)) { for (i = c->num_constraints, cptr = c->constraints; i > 0; i --, cptr ++) cptr->option->conflicted = 1; } cupsArrayDelete(active); /* * Return the number of conflicts found... */ return (conflicts); }
static int /* O - Exit status */ auto_configure(ppd_file_t *ppd, /* I - PPD file */ const char *user) /* I - Printing user */ { int status = 0; /* Exit status */ ppd_option_t *option; /* Current option in PPD */ ppd_attr_t *attr; /* Query command attribute */ const char *valptr; /* Pointer into attribute value */ char buffer[1024], /* String buffer */ *bufptr; /* Pointer into buffer */ ssize_t bytes; /* Number of bytes read */ int datalen; /* Side-channel data length */ /* * See if the backend supports bidirectional I/O... */ datalen = 1; if (cupsSideChannelDoRequest(CUPS_SC_CMD_GET_BIDI, buffer, &datalen, 30.0) != CUPS_SC_STATUS_OK || buffer[0] != CUPS_SC_BIDI_SUPPORTED) { fputs("DEBUG: Unable to auto-configure PostScript Printer - no " "bidirectional I/O available!\n", stderr); return (1); } /* * Put the printer in PostScript mode... */ begin_ps(ppd, user); /* * (STR #4028) * * As a lot of PPDs contain bad PostScript query code, we need to prevent one * bad query sequence from affecting all auto-configuration. The following * error handler allows us to log PostScript errors to cupsd. */ puts("/cups_handleerror {\n" " $error /newerror false put\n" " (:PostScript error in \") print cups_query_keyword print (\": ) " "print\n" " $error /errorname get 128 string cvs print\n" " (; offending command:) print $error /command get 128 string cvs " "print (\n) print flush\n" "} bind def\n" "errordict /timeout {} put\n" "/cups_query_keyword (?Unknown) def\n"); fflush(stdout); /* * Wait for the printer to become connected... */ do { sleep(1); datalen = 1; } while (cupsSideChannelDoRequest(CUPS_SC_CMD_GET_CONNECTED, buffer, &datalen, 5.0) == CUPS_SC_STATUS_OK && !buffer[0]); /* * Then loop through every option in the PPD file and ask for the current * value... */ fputs("DEBUG: Auto-configuring PostScript printer...\n", stderr); for (option = ppdFirstOption(ppd); option; option = ppdNextOption(ppd)) { /* * See if we have a query command for this option... */ snprintf(buffer, sizeof(buffer), "?%s", option->keyword); if ((attr = ppdFindAttr(ppd, buffer, NULL)) == NULL || !attr->value) { fprintf(stderr, "DEBUG: Skipping %s option...\n", option->keyword); continue; } /* * Send the query code to the printer... */ fprintf(stderr, "DEBUG: Querying %s...\n", option->keyword); for (bufptr = buffer, valptr = attr->value; *valptr; valptr ++) { /* * Log the query code, breaking at newlines... */ if (*valptr == '\n') { *bufptr = '\0'; fprintf(stderr, "DEBUG: %s\\n\n", buffer); bufptr = buffer; } else if (*valptr < ' ') { if (bufptr >= (buffer + sizeof(buffer) - 4)) { *bufptr = '\0'; fprintf(stderr, "DEBUG: %s\n", buffer); bufptr = buffer; } if (*valptr == '\r') { *bufptr++ = '\\'; *bufptr++ = 'r'; } else if (*valptr == '\t') { *bufptr++ = '\\'; *bufptr++ = 't'; } else { *bufptr++ = '\\'; *bufptr++ = '0' + ((*valptr / 64) & 7); *bufptr++ = '0' + ((*valptr / 8) & 7); *bufptr++ = '0' + (*valptr & 7); } } else { if (bufptr >= (buffer + sizeof(buffer) - 1)) { *bufptr = '\0'; fprintf(stderr, "DEBUG: %s\n", buffer); bufptr = buffer; } *bufptr++ = *valptr; } } if (bufptr > buffer) { *bufptr = '\0'; fprintf(stderr, "DEBUG: %s\n", buffer); } printf("/cups_query_keyword (?%s) def\n", option->keyword); /* Set keyword for error reporting */ fputs("{ (", stdout); for (valptr = attr->value; *valptr; valptr ++) { if (*valptr == '(' || *valptr == ')' || *valptr == '\\') putchar('\\'); putchar(*valptr); } fputs(") cvx exec } stopped { cups_handleerror } if clear\n", stdout); /* Send query code */ fflush(stdout); datalen = 0; cupsSideChannelDoRequest(CUPS_SC_CMD_DRAIN_OUTPUT, buffer, &datalen, 5.0); /* * Read the response data... */ bufptr = buffer; buffer[0] = '\0'; while ((bytes = cupsBackChannelRead(bufptr, sizeof(buffer) - (size_t)(bufptr - buffer) - 1, 10.0)) > 0) { /* * No newline at the end? Go on reading ... */ bufptr += bytes; *bufptr = '\0'; if (bytes == 0 || (bufptr > buffer && bufptr[-1] != '\r' && bufptr[-1] != '\n')) continue; /* * Trim whitespace and control characters from both ends... */ bytes = bufptr - buffer; for (bufptr --; bufptr >= buffer; bufptr --) if (isspace(*bufptr & 255) || iscntrl(*bufptr & 255)) *bufptr = '\0'; else break; for (bufptr = buffer; isspace(*bufptr & 255) || iscntrl(*bufptr & 255); bufptr ++); if (bufptr > buffer) { _cups_strcpy(buffer, bufptr); bufptr = buffer; } fprintf(stderr, "DEBUG: Got %d bytes.\n", (int)bytes); /* * Skip blank lines... */ if (!buffer[0]) continue; /* * Check the response... */ if ((bufptr = strchr(buffer, ':')) != NULL) { /* * PostScript code for this option in the PPD is broken; show the * interpreter's error message that came back... */ fprintf(stderr, "DEBUG%s\n", bufptr); break; } /* * Verify the result is a valid option choice... */ if (!ppdFindChoice(option, buffer)) { if (!strcasecmp(buffer, "Unknown")) break; bufptr = buffer; buffer[0] = '\0'; continue; } /* * Write out the result and move on to the next option... */ fprintf(stderr, "PPD: Default%s=%s\n", option->keyword, buffer); break; } /* * Printer did not answer this option's query */ if (bytes <= 0) { fprintf(stderr, "DEBUG: No answer to query for option %s within 10 seconds.\n", option->keyword); status = 1; } } /* * Finish the job... */ fflush(stdout); end_ps(ppd); /* * Return... */ if (status) _cupsLangPrintFilter(stderr, "WARNING", _("Unable to configure printer options.")); return (0); }