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revise svg detection

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We weren't checking svgz files as far in.
This commit is contained in:
John Cupitt 2020-01-15 09:01:38 +00:00
parent a762601564
commit 6605029bc3
1 changed files with 4 additions and 2 deletions
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6
libvips/foreign/svgload.c
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@ -440,7 +440,7 @@ vips_foreign_load_svg_is_a( const void *buf, size_t len )
/* If the buffer looks like a zip, deflate to here and then search /* If the buffer looks like a zip, deflate to here and then search
* that for <svg. * that for <svg.
*/ */
char obuf[224]; char obuf[SVG_HEADER_SIZE];
#endif /*HANDLE_SVGZ*/ #endif /*HANDLE_SVGZ*/
int i; int i;
@ -476,8 +476,10 @@ vips_foreign_load_svg_is_a( const void *buf, size_t len )
do { do {
zs.avail_out = sizeof( obuf ) - opos; zs.avail_out = sizeof( obuf ) - opos;
zs.next_out = (unsigned char *) obuf + opos; zs.next_out = (unsigned char *) obuf + opos;
if( inflate( &zs, Z_NO_FLUSH ) < Z_OK ) if( inflate( &zs, Z_NO_FLUSH ) < Z_OK ) {
inflateEnd( &zs );
return( FALSE ); return( FALSE );
}
opos = sizeof( obuf ) - zs.avail_out; opos = sizeof( obuf ) - zs.avail_out;
} while( opos < sizeof( obuf ) && } while( opos < sizeof( obuf ) &&
zs.avail_in > 0 ); zs.avail_in > 0 );