57 lines
2.3 KiB
Plaintext
57 lines
2.3 KiB
Plaintext
--- f_readeps.c
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+++ f_readeps.c 2011-06-17 12:46:08.519926308 +0000
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@@ -252,11 +252,12 @@ bitmap_from_gs(file, filetype, pic, urx,
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{
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char buf[300];
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FILE *tmpfp, *pixfile, *gsfile;
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- char *psnam, *driver;
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- int status, wid, ht, nbitmap, fd;
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+ char *driver;
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+ int status, wid, ht, nbitmap, fd, len;
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char tmpfile[PATH_MAX],
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pixnam[PATH_MAX],
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errnam[PATH_MAX],
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+ psnam[PATH_MAX],
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gscom[2 * PATH_MAX];
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wid = urx - llx;
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@@ -307,19 +308,26 @@ bitmap_from_gs(file, filetype, pic, urx,
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/* for color, use pcx */
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driver = "pcx256";
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}
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- /* avoid absolute paths (for Cygwin with gswin32) by changing directory */
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- if (tmpfile[0] == '/') {
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- psnam = strrchr(tmpfile, '/');
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- *psnam = 0;
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- sprintf(gscom, "cd \"%s/\";", tmpfile);
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- *psnam++ = '/'; /* Restore name for unlink() below */
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- } else {
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- psnam = tmpfile;
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- gscom[0] = '\0';
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+ /* Canonicalize the eps file filename, needed to "defeat" gs after .locksafe */
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+ if (!realpath(tmpfile, psnam)) {
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+ file_msg("Cannot canonicalize %s: %s\n", tmpfile, strerror(errno));
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+ return False;
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+ }
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+ /* From Language.htm of ghostscript 9.00 and higher:
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+ * If Ghostscript is started with -dNOSAFER or -dDELAYSAFER, this operator can
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+ * be used to enter SAFER mode with the current set of PermitFile... user
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+ * parameters in effect. Since .setsafe sets the PermitFile... user parameters
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+ * to empty arrays, a script or job server that needs to enable certain paths
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+ * for file Reading, Writing and/or Control can use this operator to perform
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+ * the locking needed to enter SAFER mode.
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+ */
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+ len = snprintf(gscom, sizeof(gscom) - 1,
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+ "%s -r72x72 -sDEVICE=%s -g%dx%d -dDELAYSAFER -sOutputFile=%s -c '<</PermitFileReading[(%s)]>> setuserparams .locksafe' -q - > %s 2>&1",
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+ appres.ghostscript, driver, wid, ht, pixnam, psnam, errnam);
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+ if (len >= sizeof(gscom) - 1 || len < 0) {
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+ file_msg("Cannot write to buffer, file name to large: %s\n", psnam);
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+ return False;
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}
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- sprintf(&gscom[strlen(gscom)],
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- "%s -r72x72 -dSAFER -sDEVICE=%s -g%dx%d -sOutputFile=%s -q - > %s 2>&1",
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- appres.ghostscript, driver, wid, ht, pixnam, errnam);
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if (appres.DEBUG)
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fprintf(stderr,"calling: %s\n",gscom);
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if ((gsfile = popen(gscom, "w")) == 0) {
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