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Fix for ticket #3007: .bmp avatar uploads weren't being properly converted to PNG in all cases

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Part of the reported issue was previuosly fixed by dc497ed0 (smaller size images being blanked).
This commit fixes the remaining bug with original-size avatars being left as BMP (which could include the 96px size for instance, which could cause problems in browsers not supporting BMP natively)

Added ImageFile::copyTo() as a convenient alias for resizeTo() when not resizing; this performs the BMP/XPM/XBM->PNG conversion if needed, or copies the original file.
Copying instead of using move_uploaded_file() is fine here since:
a) the files are cleaned up on script completion anyway (vs moving to remove it)
b) we're already performing getimagesize() and possibly load/resize on the file before this point (vs needing to move the file into a usable area to work with open_basedir restrictions that prevent working directly with uploaded files in the temp dir; since this would fail anyway, we lose nothing)

ImageFile::preferredType() now works on $this->type instead of asking for one, to make it handier to use from outside. (This is still needed in order for calling code to generate a target filename.)

Recommended for future:
* additional consolidation between the various ways of uploading avatars (touched avatarsettings, grouplogo, and apiaccountupdateprofileimage with similar minor changes)
* consolidate type checks and file naming into Avatar class
This commit is contained in:
Brion Vibber 2011-01-24 12:22:47 -08:00
parent c309bbae93
commit 820dd293c9
4 changed files with 32 additions and 18 deletions
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5
actions/apiaccountupdateprofileimage.php
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@ -112,16 +112,17 @@ class ApiAccountUpdateProfileImageAction extends ApiAuthAction
return;
}
$type = $imagefile->preferredType();
$filename = Avatar::filename(
$user->id,
image_type_to_extension($imagefile->type),
image_type_to_extension($type),
null,
'tmp'.common_timestamp()
);
$filepath = Avatar::path($filename);
move_uploaded_file($imagefile->filepath, $filepath);
$imagefile->copyTo($filepath);
$profile = $this->user->getProfile();

9
actions/avatarsettings.php
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@ -320,21 +320,20 @@ class AvatarsettingsAction extends AccountSettingsAction
}
$cur = common_current_user();
$type = $imagefile->preferredType();
$filename = Avatar::filename($cur->id,
image_type_to_extension($imagefile->type),
image_type_to_extension($type),
null,
'tmp'.common_timestamp());
$filepath = Avatar::path($filename);
move_uploaded_file($imagefile->filepath, $filepath);
$imagefile->copyTo($filepath);
$filedata = array('filename' => $filename,
'filepath' => $filepath,
'width' => $imagefile->width,
'height' => $imagefile->height,
'type' => $imagefile->type);
'type' => $type);
$_SESSION['FILEDATA'] = $filedata;

7
actions/grouplogo.php
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@ -353,20 +353,21 @@ class GrouplogoAction extends GroupDesignAction
return;
}
$type = $imagefile->preferredType();
$filename = Avatar::filename($this->group->id,
image_type_to_extension($imagefile->type),
image_type_to_extension($type),
null,
'group-temp-'.common_timestamp());
$filepath = Avatar::path($filename);
move_uploaded_file($imagefile->filepath, $filepath);
$imagefile->copyTo($filepath);
$filedata = array('filename' => $filename,
'filepath' => $filepath,
'width' => $imagefile->width,
'height' => $imagefile->height,
'type' => $imagefile->type);
'type' => $type);
$_SESSION['FILEDATA'] = $filedata;

29
lib/imagefile.php
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@ -128,7 +128,7 @@ class ImageFile
*/
function resize($size, $x = 0, $y = 0, $w = null, $h = null)
{
$targetType = $this->preferredType($this->type);
$targetType = $this->preferredType();
$outname = Avatar::filename($this->id,
image_type_to_extension($targetType),
$size,
@ -138,6 +138,19 @@ class ImageFile
return $outname;
}
/**
* Copy the image file to the given destination.
* For obscure formats, this will automatically convert to PNG;
* otherwise the original file will be copied as-is.
*
* @param string $outpath
* @return string filename
*/
function copyTo($outpath)
{
return $this->resizeTo($outpath, $this->width, $this->height);
}
/**
* Create and save a thumbnail image.
*
@ -154,7 +167,7 @@ class ImageFile
{
$w = ($w === null) ? $this->width:$w;
$h = ($h === null) ? $this->height:$h;
$targetType = $this->preferredType($this->type);
$targetType = $this->preferredType();
if (!file_exists($this->filepath)) {
throw new Exception(_('Lost our file.'));
@ -247,25 +260,25 @@ class ImageFile
/**
* Several obscure file types should be normalized to PNG on resize.
*
* @param int $type
* @fixme consider flattening anything not GIF or JPEG to PNG
* @return int
*/
function preferredType($type)
function preferredType()
{
if($type == IMAGETYPE_BMP) {
if($this->type == IMAGETYPE_BMP) {
//we don't want to save BMP... it's an inefficient, rare, antiquated format
//save png instead
return IMAGETYPE_PNG;
} else if($type == IMAGETYPE_WBMP) {
} else if($this->type == IMAGETYPE_WBMP) {
//we don't want to save WBMP... it's a rare format that we can't guarantee clients will support
//save png instead
return IMAGETYPE_PNG;
} else if($type == IMAGETYPE_XBM) {
} else if($this->type == IMAGETYPE_XBM) {
//we don't want to save XBM... it's a rare format that we can't guarantee clients will support
//save png instead
return IMAGETYPE_PNG;
}
return $type;
return $this->type;
}
function unlink()