Uncaught 'ImagickException' reading PDF with Ghostscript in PHP

[Crispin]

Hi folks,

I've for php 5.6.23 running in a freebsd jail with imagemagick installed.

I have a file (777) in the root called in.php.
If I run the following in a command line it converts it fine

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convert in.pdf out.png

If I run the following code, I get an exception:

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$path = '/mnt/web/LandCruiserClub/in.pdf';

print "Readable:" . is_readable($path) . "|<br>";
print "path: " . $path . "<br />";
print "file exists." . file_exists($path) . "<br />";

$pdf = new Imagick($path.'[0]');
$pdf->setimageformat('jpg');
$pdf->writeimage('/mnt/web/LandCruiserClub/out.jpg');

If I try with fully qualified and relative paths.

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Fatal error: Uncaught exception 'ImagickException' with message 'Failed to read the file' in /mnt/web/LandCruiserClub/pi.php:18 Stack trace: #0 /mnt/web/LandCruiserClub/pi.php(18): Imagick->__construct('in.pdf[0]') #1 {main} thrown in /mnt/web/LandCruiserClub/pi.php on line 18

Any help with why this might be happening?


Thanks

Image Magick:

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imagick

imagick module	enabled
imagick module version	3.4.1
imagick classes	Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator, ImagickKernel
Imagick compiled with ImageMagick version	ImageMagick 6.9.4-3 Q16 amd64 2016-07-14 http://www.imagemagick.org
Imagick using ImageMagick library version	ImageMagick 6.9.4-3 Q16 amd64 2016-07-14 http://www.imagemagick.org
ImageMagick copyright	Copyright (C) 1999-2016 ImageMagick Studio LLC
ImageMagick release date	2016-07-14
ImageMagick number of supported formats:	229
ImageMagick supported formats	3FR, AAI, AI, ART, ARW, AVI, AVS, BGR, BGRA, BGRO, BIE, BMP, BMP2, BMP3, BRF, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CRW, CUR, CUT, DATA, DCM, DCR, DCX, DDS, DFONT, DNG, DOT, DPX, DXT1, DXT5, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, FAX, FITS, FPX, FRACTAL, FTS, G3, GIF, GIF87, GRADIENT, GRAY, GROUP4, GV, H, HALD, HDR, HISTOGRAM, HRZ, HTM, HTML, ICB, ICO, ICON, IIQ, INFO, INLINE, IPL, ISOBRL, ISOBRL6, J2C, J2K, JBG, JBIG, JNG, JNX, JP2, JPC, JPE, JPEG, JPG, JPM, JPS, JPT, JSON, K25, KDC, LABEL, M2V, M4V, MAC, MAGICK, MAP, MASK, MAT, MATTE, MEF, MIFF, MKV, MNG, MONO, MOV, MP4, MPC, MPEG, MPG, MRW, MSL, MSVG, MTV, MVG, NEF, NRW, NULL, ORF, OTB, OTF, PAL, PALM, PAM, PANGO, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PDFA, PEF, PES, PFA, PFB, PFM, PGM, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG00, PNG24, PNG32, PNG48, PNG64, PNG8, PNM, PPM, PREVIEW, PS, PS2, PS3, PSB, PSD, PTIF, PWP, RADIAL-GRADIENT, RAF, RAS, RAW, RGB, RGBA, RGBO, RGF, RLA, RLE, RMF, RW2, SCR, SCT, SFW, SGI, SHTML, SIX, SIXEL, SPARSE-COLOR, SR2, SRF, STEGANO, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TTC, TTF, TXT, UBRL, UBRL6, UIL, UYVY, VDA, VICAR, VID, VIFF, VIPS, VST, WBMP, WEBP, WMF, WMV, WMZ, WPG, X3F, XBM, XC, XCF, XPM, XPS, XV, YCbCr, YCbCrA, YUV

[snibgo]

Does it work from PHP with any conversions from PDF? If not, the problem may be accessibility of Ghostscript from PHP. Try modifying your delegates.xml to include the full path to Ghostscript.

[Crispin]

No, no conversions work with any pdf.

urm, what is delegates.xml? (off to try find out in the hopes it makes sense.)

[Crispin]

I removed ghostscript package and reinstalled it. It wants to install the following:

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New packages to be INSTALLED:
        pecl-imagick: 3.4.1
        ImageMagick-nox11: 6.9.4.3,1
        ghostscript9-agpl-base: 9.16_5

Does this look right?

if I give it a bad path on purpose I get a different error -

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Uncaught exception 'ImagickException' with message 'unable to open image `/mnt/web/LandCrussiserClub/in.pdf': 

I can't find anything about delegates.xml - where would I find that?

[snibgo]

I don't use PHP so my diagnosis is only a guess based on what other have said in these forums. Try a search to find posts on very similar problems.

The directory that contains your "convert" program has a text file called delegates.xml, which tells convert how to run Ghostscript, to read PDF files. But "running a program" under PHP works differently to doing it from the command line. The problem is the system path, or something.

[Crispin]

found delegates in /usr/local/etc/ImageMagick-6/delegates.xml

However, it has nothing about ghostscript. All I can see for dpf is this:

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  <delegate decode="pdf" encode="ps" mode="bi" command=""gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=ps2write" -sPDFPassword="%a" "-sOutputFile=%o" "-f%i""/>

[snibgo]

You found it: ""gs"".

"gs" is a common name for Ghostscript. Try changing that to ...

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"/bin/my/path/to/gs"

... with the correct path, as found by "where" or "whereis" or whatever.

[Crispin]

thanks for the tip on gs.

I've put the full path in and it still does not work Still get the same error as always

[Crispin]

And we've solved it.

ln -s /usr/local/bin/gs /usr/bin/gs

Even putting the full path in the delegates.xml seemed to have no effect.

Sym-linking did the trick.

thanks for the help trying to fix it though - much appreciated.

[snibgo]

Glad you fixed it. And thanks for posting your solution, it may help other people.

I've taken the liberty of changing the thread title, to help search engines find it.

[Crispin]

Thanks for changing the title. Hopefully it does help someone else.