+++ /dev/null
-/*
- * pdftoippprinter.c
- *
- * Function to convert PDF into PWG/Apple Raster and PCLm for printing
- * on driverless IPP printers.
- *
- * Copyright 2007-2011 by Apple Inc.
- * Copyright 1997-2006 by Easy Software Products.
- * Copyright 2011-2013 by Till Kamppeter
- *
- * Contents:
- *
- * apply_filters() - Main function...
- * cancel_job() - Flag the job as canceled.
- * filter_present() - Is the requested filter actually installed?
- * compare_pids() - Compare process IDs for sorting PID list
- * exec_filter() - Execute a filter process
- * exec_filters() - Execute a filter chain
- * open_pipe() - Create a pipe to transfer data from filter to filter
- * get_option_in_str() - Get an option value from a string like argv[5]
- * set_option_in_str() - Set an option value in a string like argv[5]
- */
-
-/*
- * Include necessary headers...
- */
-
-#include <config.h>
-#include <cups/cups.h>
-#include <ppd/ppd.h>
-#include <cups/file.h>
-#include <signal.h>
-#include <sys/wait.h>
-#include <limits.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <ctype.h>
-#include <cupsfilters/image-private.h>
-
-#define MAX_CHECK_COMMENT_LINES 20
-
-/*
- * Type definitions
- */
-
-typedef unsigned output_format_t;
-enum output_format_e {PDF = 0, POSTSCRIPT = 1, PWGRASTER = 2, PCLXL = 3, PCL = 4, APPLERASTER = 5, PCLM = 6};
-typedef struct filter_pid_s /* Filter in filter chain */
-{
- char *name; /* Filter executable name */
- int pid; /* PID of filter process */
-} filter_pid_t;
-
-/*
- * Local functions...
- */
-
-static void cancel_job(int sig);
-static int filter_present(const char *filter);
-static int compare_pids(filter_pid_t *a, filter_pid_t *b);
-static int exec_filter(const char *filter, char **argv,
- int infd, int outfd);
-static int exec_filters(cups_array_t *filters, char **argv);
-static int open_pipe(int *fds);
-static char* get_option_in_str(char *buf, const char *option,
- int return_value);
-
-
-/*
- * Local globals...
- */
-
-static int job_canceled = 0;
-
-/*
- * Set an option in a string of options
- */
-
-void /* O - 0 on success, 1 on error */
-set_option_in_str(char *buf, /* I - Buffer with option list string */
- int buflen, /* I - Length of buffer */
- const char *option, /* I - Option to change/add */
- const char *value) /* I - New value for option, NULL
- removes option */
-{
- char *p1, *p2, *p3;
-
- if (!buf || buflen == 0 || !option)
- return;
- /* Remove any occurrence of option in the string */
- p1 = buf;
- while (*p1 != '\0' && (p2 = strcasestr(p1, option)) != NULL) {
- if (p2 > buf && *(p2 - 1) != ' ' && *(p2 - 1) != '\t') {
- p1 = p2 + 1;
- continue;
- }
- p1 = p2 + strlen(option);
- if(!strcmp(option,"cups-browsed")){
- fprintf(stderr, "DEBUG: Removing option cups-browsed if it is present\n");
- }else if (*p1 != '=' && *p1 != ' ' && *p1 != '\t' && *p1 != '\0')
- continue;
- if(!strcmp(option,"cups-browsed-dest-printer")){
- fprintf(stderr, "DEBUG: Removing cups-browsed-dest-printer option from arguments\n");
- p3 = strchr(p1, '"');
- p3++;
- p1 = strchr(p3, '"');
- }
- while (*p1 != ' ' && *p1 != '\t' && *p1 != '\0') p1 ++;
- while ((*p1 == ' ' || *p1 == '\t') && *p1 != '\0') p1 ++;
- memmove(p2, p1, strlen(buf) - (p1 - buf) + 1);
- p1 = p2;
- }
- /* Add option=value to the end of the string */
- if (!value)
- return;
- p1 = buf + strlen(buf);
- *p1 = ' ';
- p1 ++;
- snprintf(p1, buflen - (p1 - buf), "%s=%s", option, value);
- buf[buflen - 1] = '\0';
-}
-
-
-/*
- * 'apply_filters()' - Main function...
- */
-
-int
-apply_filters(int argc, char *argv[])
-{
- int i; /* Looping var */
- output_format_t output_format; /* Output format */
- int fd = 0; /* Copy file descriptor */
- char *filename, /* PDF file to convert */
- tempfile[1024]; /* Temporary file */
- char buffer[8192]; /* Copy buffer */
- int bytes; /* Bytes copied */
- int num_options; /* Number of options */
- cups_option_t *options; /* Options */
- const char *val; /* Option value */
- char *argv_nt[8]; /* NULL-terminated array of the command
- line arguments */
- int optbuflen;
- cups_array_t *filter_chain; /* Filter chain to execute */
- int exit_status = 0; /* Exit status */
- int color_printing; /* Do we print in color? */
- char *filter, *p;
-#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
- struct sigaction action; /* Actions for POSIX signals */
-#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
- static const char * const color_mode_option_names[] =
- { /* Possible names for a color mode option */
- "pwg-raster-document-type",
- "PwgRasterDocumentType",
- "print-color-mode",
- "PrintColorMode",
- "color-space",
- "ColorSpace",
- "color-model",
- "ColorModel",
- NULL
- };
-
-
- /*
- * Make sure status messages are not buffered...
- */
-
- setbuf(stderr, NULL);
-
- /*
- * Ignore broken pipe signals...
- */
-
- signal(SIGPIPE, SIG_IGN);
-
- /*
- * Make sure we have the right number of arguments for CUPS!
- */
-
- if (argc < 6 || argc > 7)
- {
- fprintf(stderr, "Usage: %s job user title copies options [file]\n",
- argv[0]);
- return (1);
- }
-
- /*
- * Register a signal handler to cleanly cancel a job.
- */
-
-#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
- sigset(SIGTERM, cancel_job);
-#elif defined(HAVE_SIGACTION)
- memset(&action, 0, sizeof(action));
-
- sigemptyset(&action.sa_mask);
- action.sa_handler = cancel_job;
- sigaction(SIGTERM, &action, NULL);
-#else
- signal(SIGTERM, cancel_job);
-#endif /* HAVE_SIGSET */
-
- /*
- * Copy stdin if needed...
- */
-
- if (argc == 6) {
- /*
- * Copy stdin to a temp file...
- */
-
- if ((fd = cupsTempFd(tempfile, sizeof(tempfile))) < 0) {
- perror("DEBUG: Unable to copy PDF file");
- return (1);
- }
-
- fprintf(stderr,
- "DEBUG: Copying stdin to temp print file \"%s\"\n",
- tempfile);
-
- while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0)
- bytes = write(fd, buffer, bytes);
-
- close(fd);
-
- filename = tempfile;
- } else {
- /*
- * Use the filename on the command-line...
- */
-
- filename = argv[6];
- tempfile[0] = '\0';
- }
-
- /*
- * Get the options from the fifth command line argument
- */
-
- num_options = cupsParseOptions(argv[5], 0, &options);
-
- /*
- * Copy the command line arguments into a NULL-terminated array
- */
-
- for (i = 0; i < 5; i++)
- argv_nt[i] = argv[i];
- /* We copy the contents of argv[5] into a somewhat larger buffer so that
- we can manipulate it */
- optbuflen = strlen(argv[5]) + 256;
- argv_nt[5] = calloc(optbuflen, sizeof(char));
- strcpy(argv_nt[5], (const char*)argv[5]);
- argv_nt[6] = filename;
- argv_nt[7] = NULL;
-
- /*
- * Create filter chain
- */
-
- filter_chain = cupsArrayNew(NULL, NULL);
-
- /*
- * Add the gziptoany filter if installed
- */
-
- if (filter_present("gziptoany"))
- cupsArrayAdd(filter_chain, "gziptoany");
-
- /*
- * Select the output format: PDF, PostScript, PWG Raster, PCL-XL, and
- * PCL 5c/e
- * Add the needed filters to the filter chain
- */
-
- if ((val = cupsGetOption("output-format", num_options, options)) != NULL) {
- if (!strcmp(val, "raster")) {
- output_format = PWGRASTER;
- /* PWG Raster output */
- set_option_in_str(argv_nt[5], optbuflen, "MediaClass", NULL);
- set_option_in_str(argv_nt[5], optbuflen, "media-class", "pwg");
- /* Page logging into page_log is not done by gstoraster/pdftoraster,
- so let it be done by pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "on");
- if (filter_present("gstoraster") && access(CUPS_GHOSTSCRIPT, X_OK) == 0)
- cupsArrayAdd(filter_chain, "gstoraster");
- else {
- fprintf(stderr,
- "DEBUG: Filter gstoraster or Ghostscript (%s) missing for \"output-format=%s\", using pdftoraster.\n",
- CUPS_GHOSTSCRIPT, val);
- if (filter_present("pdftoraster"))
- cupsArrayAdd(filter_chain, "pdftoraster");
- else {
- fprintf(stderr,
- "ERROR: Filter pdftoraster missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- setenv("FINAL_CONTENT_TYPE", "pwg", 1);
- }
- } else if (!strcmp(val, "apple-raster")) {
- output_format = APPLERASTER;
- /* PWG Raster output */
- set_option_in_str(argv_nt[5], optbuflen, "MediaClass", NULL);
- set_option_in_str(argv_nt[5], optbuflen, "media-class", "");
- /* Page logging into page_log is not done by gstoraster/pdftoraster,
- so let it be done by pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "on");
- if (filter_present("gstoraster") && access(CUPS_GHOSTSCRIPT, X_OK) == 0)
- cupsArrayAdd(filter_chain, "gstoraster");
- else {
- fprintf(stderr,
- "DEBUG: Filter gstoraster or Ghostscript (%s) missing for \"output-format=%s\", using pdftoraster.\n",
- CUPS_GHOSTSCRIPT, val);
- if (filter_present("pdftoraster"))
- cupsArrayAdd(filter_chain, "pdftoraster");
- else {
- fprintf(stderr,
- "ERROR: Filter pdftoraster missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- }
- if (filter_present("rastertopwg"))
- cupsArrayAdd(filter_chain, "rastertopwg");
- else {
- fprintf(stderr,
- "ERROR: Filter rastertopwg missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- setenv("FINAL_CONTENT_TYPE", "image/urf", 1);
- } else if (!strcmp(val, "pdf")) {
- output_format = PDF;
- /* Page logging into page_log has to be done by pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "on");
- } else if (!strcmp(val, "postscript")) {
- output_format = POSTSCRIPT;
- /* Page logging into page_log is done by pstops, so no need by
- pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "off");
- if (filter_present("pdftops")) {
- cupsArrayAdd(filter_chain, "pdftops");
- if (access(CUPS_GHOSTSCRIPT, X_OK) != 0) {
- fprintf(stderr,
- "DEBUG: Ghostscript (%s) missing for \"output-format=%s\", using Poppler's pdftops instead.\n",
- CUPS_GHOSTSCRIPT, val);
- set_option_in_str(argv_nt[5], optbuflen, "pdftops-renderer",
- "pdftops");
- } else if (access(CUPS_POPPLER_PDFTOPS, X_OK) != 0) {
- fprintf(stderr,
- "DEBUG: Poppler's pdftops (%s) missing for \"output-format=%s\", using Ghostscript instead.\n",
- CUPS_POPPLER_PDFTOPS, val);
- set_option_in_str(argv_nt[5], optbuflen, "pdftops-renderer",
- "gs");
- } else
- set_option_in_str(argv_nt[5], optbuflen, "pdftops-renderer",
- "hybrid");
- } else {
- fprintf(stderr,
- "ERROR: Filter pdftops missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- } else if ((p = strcasestr(val, "pcl")) != NULL) {
- if (!strcasecmp(p, "pclxl")) {
- output_format = PCLXL;
- if (filter_present("gstopxl") && access(CUPS_GHOSTSCRIPT, X_OK) == 0) {
- cupsArrayAdd(filter_chain, "gstopxl");
- /* Page logging into page_log is not done by gstopxl,
- so let it be done by pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "on");
- } else {
- fprintf(stderr,
- "DEBUG: Filter gstopxl or Ghostscript (%s) missing for \"output-format=%s\", falling back to PCL 5c/e.\n",
- CUPS_GHOSTSCRIPT, val);
- output_format = PCL;
- }
- } else if (!strcasecmp(p, "pclm")) {
- output_format = PCLM;
- /* PWG Raster output */
- set_option_in_str(argv_nt[5], optbuflen, "MediaClass", NULL);
- set_option_in_str(argv_nt[5], optbuflen, "media-class", "");
- /* Page logging into page_log is not done by gstoraster/pdftoraster,
- so let it be done by pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "on");
- if (filter_present("gstoraster") && access(CUPS_GHOSTSCRIPT, X_OK) == 0)
- cupsArrayAdd(filter_chain, "gstoraster");
- else {
- fprintf(stderr,
- "DEBUG: Filter gstoraster or Ghostscript (%s) missing for \"output-format=%s\", using pdftoraster.\n",
- CUPS_GHOSTSCRIPT, val);
- if (filter_present("pdftoraster"))
- cupsArrayAdd(filter_chain, "pdftoraster");
- else {
- fprintf(stderr,
- "ERROR: Filter pdftoraster missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- }
- if (filter_present("rastertopclm"))
- cupsArrayAdd(filter_chain, "rastertopclm");
- else {
- fprintf(stderr,
- "ERROR: Filter rastertopclm missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- } else {
- output_format = PCL;
- }
- } else {
- fprintf(stderr,
- "ERROR: Invalid value for \"output-format\": \"%s\"\n", val);
- exit_status = 1;
- goto error;
- }
- } else {
- fprintf(stderr,
- "ERROR: Missing option \"output-format\".\n");
- exit_status = 1;
- goto error;
- }
- if (output_format == PCL) {
- /* We need CUPS Raster as we want to use rastertopclx with unprintable
- margins */
- set_option_in_str(argv_nt[5], optbuflen, "MediaClass", NULL);
- set_option_in_str(argv_nt[5], optbuflen, "media-class", "");
- /* Page logging into page_log is done by rastertopclx, so no need by
- pdftopdf */
- set_option_in_str(argv_nt[5], optbuflen, "page-logging", "off");
- /* Does the client send info about margins? */
- if (!get_option_in_str(argv_nt[5], "media-left-margin", 0) &&
- !get_option_in_str(argv_nt[5], "media-right-margin", 0) &&
- !get_option_in_str(argv_nt[5], "media-top-margin", 0) &&
- !get_option_in_str(argv_nt[5], "media-bottom-margin", 0)) {
- /* Set default 12pt margins if there is no info about printer's
- unprintable margins (100th of mm units, 12.0 * 2540.0 / 72.0 = 423.33)
- */
- set_option_in_str(argv_nt[5], optbuflen, "media-left-margin", "423.33");
- set_option_in_str(argv_nt[5], optbuflen, "media-right-margin", "423.33");
- set_option_in_str(argv_nt[5], optbuflen, "media-top-margin", "423.33");
- set_option_in_str(argv_nt[5], optbuflen, "media-bottom-margin", "423.33");
- }
- /* Check whether the job is requested to be printed in color and if so,
- set the color space to RGB as this is the best color printing support
- in PCL 5c */
- color_printing = 0;
- for (i = 0; color_mode_option_names[i]; i ++) {
- p = get_option_in_str(argv_nt[5], color_mode_option_names[i], 1);
- if (p && (strcasestr(p, "RGB") || strcasestr(p, "CMY") ||
- strcasestr(p, "color"))) {
- color_printing = 1;
- break;
- }
- }
- if (color_printing == 1) {
- /* Remove unneeded color mode options */
- for (i = 0; color_mode_option_names[i]; i ++)
- set_option_in_str(argv_nt[5], optbuflen, color_mode_option_names[i],
- NULL);
- /* Set RGB as color mode */
- set_option_in_str(argv_nt[5], optbuflen, "print-color-mode", "RGB");
- }
- if (filter_present("gstoraster") && access(CUPS_GHOSTSCRIPT, X_OK) == 0)
- cupsArrayAdd(filter_chain, "gstoraster");
- else {
- fprintf(stderr,
- "DEBUG: Filter gstoraster or Ghostscript (%s) missing for \"output-format=%s\", using pdftoraster.\n",
- CUPS_GHOSTSCRIPT, val);
- if (filter_present("pdftoraster"))
- cupsArrayAdd(filter_chain, "pdftoraster");
- else {
- fprintf(stderr,
- "ERROR: Filter pdftoraster missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- }
- if (filter_present("rastertopclx"))
- cupsArrayAdd(filter_chain, "rastertopclx");
- else {
- fprintf(stderr,
- "ERROR: Filter rastertopclx missing for \"output-format=%s\"\n",
- val);
- exit_status = 1;
- goto error;
- }
- }
-
- fprintf(stderr,
- "DEBUG: Printer supports output formats: %s\nDEBUG: Using following CUPS filter chain to convert input data to the %s format:",
- val,
- output_format == PDF ? "PDF" :
- (output_format == POSTSCRIPT ? "Postscript" :
- (output_format == PWGRASTER ? "PWG Raster" :
- (output_format == PCLXL ? "PCL XL" :
- (output_format == PCL ? "PCL 5c/e" :
- (output_format == APPLERASTER ? "APPLE Raster" :
- (output_format == PCLM ? "PCLm" : "unknown")))))));
- for (filter = (char *)cupsArrayFirst(filter_chain);
- filter;
- filter = (char *)cupsArrayNext(filter_chain))
- fprintf(stderr, " %s", filter);
- fprintf(stderr, "\n");
-
- /*
- * Execute the filter chain
- */
-
- exit_status = exec_filters(filter_chain, (char **)argv_nt);
-
- /*
- * Cleanup and exit...
- */
-
- error:
-
- if (tempfile[0])
- unlink(tempfile);
-
- return (exit_status);
-}
-
-
-/*
- * 'cancel_job()' - Flag the job as canceled.
- */
-
-static void
-cancel_job(int sig) /* I - Signal number (unused) */
-{
- (void)sig;
-
- job_canceled = 1;
-}
-
-
-static int
-filter_present(const char *filter) /* I - Filter name */
-{
- char filter_path[1024]; /* Path to filter executable */
- const char *cups_serverbin; /* CUPS_SERVERBIN environment variable */
-
- if ((cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
- cups_serverbin = CUPS_SERVERBIN;
-
- snprintf(filter_path, sizeof(filter_path), "%s/filter/%s",
- cups_serverbin, filter);
-
- if (access(filter_path, X_OK) == 0)
- return 1;
-
- return 0;
-}
-
-
-/*
- * 'compare_pids()' - Compare two filter PIDs...
- */
-
-static int /* O - Result of comparison */
-compare_pids(filter_pid_t *a, /* I - First filter */
- filter_pid_t *b) /* I - Second filter */
-{
- return (a->pid - b->pid);
-}
-
-
-/*
- * 'exec_filter()' - Execute a single filter.
- */
-
-static int /* O - Process ID or -1 on error */
-exec_filter(const char *filter, /* I - Filter to execute */
- char **argv, /* I - Original command line args */
- int infd, /* I - Stdin file descriptor */
- int outfd) /* I - Stdout file descriptor */
-{
- int pid, /* Process ID */
- fd; /* Temporary file descriptor */
-
- if ((pid = fork()) == 0) {
- /*
- * Child process goes here...
- *
- * Update stdin/stdout/stderr as needed...
- */
-
- if (infd != 0) {
- if (infd < 0)
- infd = open("/dev/null", O_RDONLY);
-
- if (infd > 0) {
- dup2(infd, 0);
- close(infd);
- }
- }
-
- if (outfd != 1) {
- if (outfd < 0)
- outfd = open("/dev/null", O_WRONLY);
-
- if (outfd > 1) {
- dup2(outfd, 1);
- close(outfd);
- }
- }
-
- /* Send stderr to the Nirwana if we are running gziptoany, as
- gziptoany emits a false "PAGE: 1 1" */
- if (strcasestr(filter, "gziptoany")) {
- if ((fd = open("/dev/null", O_RDWR)) > 2) {
- dup2(fd, 2);
- close(fd);
- } else
- close(fd);
- fcntl(2, F_SETFL, O_NDELAY);
- }
-
- if ((fd = open("/dev/null", O_RDWR)) > 3) {
- dup2(fd, 3);
- close(fd);
- }
- else
- close(fd);
- fcntl(3, F_SETFL, O_NDELAY);
-
- if ((fd = open("/dev/null", O_RDWR)) > 4) {
- dup2(fd, 4);
- close(fd);
- } else
- close(fd);
- fcntl(4, F_SETFL, O_NDELAY);
-
- /*
- * Execute command...
- */
-
- execvp(filter, argv);
-
- perror(filter);
-
- exit(errno);
- }
-
- return (pid);
-}
-
-
-/*
- * 'exec_filters()' - Execute filters for the given file and options.
- */
-
-static int /* O - 0 on success, 1 on error */
-exec_filters(cups_array_t *filters, /* I - Array of filters to run */
- char **argv) /* I - Filter options */
-{
- int i; /* Looping var */
- char program[1024]; /* Program to run */
- char *filter, /* Current filter */
- *next; /* Next filter */
- int current, /* Current filter */
- filterfds[2][2], /* Pipes for filters */
- pid, /* Process ID of filter */
- status, /* Exit status */
- retval; /* Return value */
- cups_array_t *pids; /* Executed filters array */
- filter_pid_t *pid_entry, /* Entry in executed filters array */
- key; /* Search key for filters */
- const char *cups_serverbin; /* CUPS_SERVERBIN environment variable */
-
- /*
- * Remove NULL ("-") filters...
- */
-
- for (filter = (char *)cupsArrayFirst(filters);
- filter;
- filter = (char *)cupsArrayNext(filters))
- if (!strcmp(filter, "-"))
- cupsArrayRemove(filters, filter);
-
- for (i = 0; argv[i]; i ++)
- fprintf(stderr, "DEBUG: argv[%d]=\"%s\"\n", i, argv[i]);
-
- /*
- * Execute all of the filters...
- */
-
- pids = cupsArrayNew((cups_array_func_t)compare_pids, NULL);
- current = 0;
- filterfds[0][0] = 0;
- filterfds[0][1] = -1;
- filterfds[1][0] = -1;
- filterfds[1][1] = -1;
-
- for (filter = (char *)cupsArrayFirst(filters);
- filter;
- filter = next, current = 1 - current) {
- next = (char *)cupsArrayNext(filters);
-
- if (filter[0] == '/') {
- strncpy(program, filter, sizeof(program) - 1);
- if (strlen(filter) > 1023)
- program[1023] = '\0';
- } else {
- if ((cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
- cups_serverbin = CUPS_SERVERBIN;
- snprintf(program, sizeof(program), "%s/filter/%s", cups_serverbin,
- filter);
- }
-
- if (filterfds[!current][1] > 1) {
- close(filterfds[1 - current][0]);
- close(filterfds[1 - current][1]);
-
- filterfds[1 - current][0] = -1;
- filterfds[1 - current][0] = -1;
- }
-
- if (next)
- open_pipe(filterfds[1 - current]);
- else
- filterfds[1 - current][1] = 1;
-
- pid = exec_filter(program, argv,
- filterfds[current][0], filterfds[1 - current][1]);
-
- if (pid > 0) {
- fprintf(stderr, "INFO: %s (PID %d) started.\n", filter, pid);
-
- pid_entry = malloc(sizeof(filter_pid_t));
- pid_entry->pid = pid;
- pid_entry->name = filter;
- cupsArrayAdd(pids, pid_entry);
- } else
- break;
-
- argv[6] = NULL;
- }
-
- /*
- * Close remaining pipes...
- */
-
- if (filterfds[0][1] > 1) {
- close(filterfds[0][0]);
- close(filterfds[0][1]);
- }
-
- if (filterfds[1][1] > 1) {
- close(filterfds[1][0]);
- close(filterfds[1][1]);
- }
-
- /*
- * Wait for the children to exit...
- */
-
- retval = 0;
-
- while (cupsArrayCount(pids) > 0) {
- if ((pid = wait(&status)) < 0) {
- if (errno == EINTR && job_canceled) {
- fprintf(stderr, "DEBUG: Job canceled, killing filters ...\n");
- for (pid_entry = (filter_pid_t *)cupsArrayFirst(pids);
- pid_entry;
- pid_entry = (filter_pid_t *)cupsArrayNext(pids))
- kill(pid_entry->pid, SIGTERM);
- job_canceled = 0;
- } else
- continue;
- }
-
- key.pid = pid;
- if ((pid_entry = (filter_pid_t *)cupsArrayFind(pids, &key)) != NULL) {
- cupsArrayRemove(pids, pid_entry);
-
- if (status) {
- if (WIFEXITED(status))
- fprintf(stderr, "ERROR: %s (PID %d) stopped with status %d\n",
- pid_entry->name, pid, WEXITSTATUS(status));
- else
- fprintf(stderr, "ERROR: %s (PID %d) crashed on signal %d\n",
- pid_entry->name, pid, WTERMSIG(status));
-
- retval = 1;
- } else
- fprintf(stderr, "INFO: %s (PID %d) exited with no errors.\n",
- pid_entry->name, pid);
-
- free(pid_entry);
- }
- }
-
- cupsArrayDelete(pids);
-
- return (retval);
-}
-
-
-/*
- * 'open_pipe()' - Create a pipe which is closed on exec.
- */
-
-static int /* O - 0 on success, -1 on error */
-open_pipe(int *fds) /* O - Pipe file descriptors (2) */
-{
- /*
- * Create the pipe...
- */
-
- if (pipe(fds)) {
- fds[0] = -1;
- fds[1] = -1;
-
- return (-1);
- }
-
- /*
- * Set the "close on exec" flag on each end of the pipe...
- */
-
- if (fcntl(fds[0], F_SETFD, fcntl(fds[0], F_GETFD) | FD_CLOEXEC)) {
- close(fds[0]);
- close(fds[1]);
-
- fds[0] = -1;
- fds[1] = -1;
-
- return (-1);
- }
-
- if (fcntl(fds[1], F_SETFD, fcntl(fds[1], F_GETFD) | FD_CLOEXEC)) {
- close(fds[0]);
- close(fds[1]);
-
- fds[0] = -1;
- fds[1] = -1;
-
- return (-1);
- }
-
- /*
- * Return 0 indicating success...
- */
-
- return (0);
-}
-
-
-/*
- * Get option value in a string of options
- */
-
-static char* /* O - Value, NULL if option not set */
-get_option_in_str(char *buf, /* I - Buffer with option list string */
- const char *option, /* I - Option of which to get value */
- int return_value) /* I - Return value or only check
- presence of option? */
-{
- char *p1, *p2;
- char *result;
-
- if (!buf || !option)
- return NULL;
- if ((p1 = strcasestr(buf, option)) == NULL)
- return NULL;
- if (p1 > buf && *(p1 - 1) != ' ' && *(p1 - 1) != '\t')
- return NULL;
- p2 = p1 + strlen(option);
- if (*p2 == ' ' || *p2 == '\t' || *p2 == '\0')
- return "";
- if (*p2 != '=')
- return NULL;
- if (!return_value)
- return "";
- p1 = p2 + 1;
- for (p2 = p1; *p2 != ' ' && *p2 != '\t' && *p2 != '\0'; p2 ++);
- if (p2 == p1)
- return "";
- result = calloc(p2 - p1 + 1, sizeof(char));
- memcpy(result, p1, p2 - p1);
- result[p2 - p1] = '\0';
- return result;
-}
-
-
projects / thirdparty / cups-filters.git / commitdiff
