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Subject: HTML incorrectly reported as SVG
The determine_file_type function incorrectly reports the attached html file as being SVG. I've also attached the script used for testing. Image::Info is 1.41, perl is: perl -V Summary of my perl5 (revision 5 version 16 subversion 3) configuration: Platform: osname=linux, osvers=3.10.0-957.1.3.el7.x86_64, archname=x86_64-linux-thread-multi uname='linux 3.10.0-957.1.3.el7.x86_64 #1 smp thu nov 29 14:49:43 utc 2018 x86_64 x86_64 x86_64 gnulinux ' config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Dccdlflags=-Wl,--enable-new-dtags -Dlddlflags=-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Wl,-z,relro -DDEBUGGING=-g -Dversion=5.16.3 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl5 -Dsitearch=/usr/local/lib64/perl5 -Dprivlib=/usr/share/perl5 -Dvendorlib=/usr/share/perl5/vendor_perl -Darchlib=/usr/lib64/perl5 -Dvendorarch=/usr/lib64/perl5/vendor_perl -Darchname=x86_64-linux-thread-multi -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Duseshrplib -Dusethreads -Duseithreads -Dusedtrace=/usr/bin/dtrace -Duselargefiles -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dscriptdir=/usr/bin -Dusesitecustomize' hint=recommended, useposix=true, d_sigaction=define useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=define, use64bitall=define, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic', cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include' ccversion='', gccversion='4.8.5 20150623 (Red Hat 4.8.5-39)', gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='gcc', ldflags =' -fstack-protector' libpth=/usr/local/lib64 /lib64 /usr/lib64 libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc libc=, so=so, useshrplib=true, gnulibc_version='2.17' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,--enable-new-dtags -Wl,-rpath,/usr/lib64/perl5/CORE' cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Wl,-z,relro ' Characteristics of this binary (from libperl): Compile-time options: HAS_TIMES MULTIPLICITY PERLIO_LAYERS PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP PERL_PRESERVE_IVUV USE_64_BIT_ALL USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES USE_LOCALE USE_LOCALE_COLLATE USE_LOCALE_CTYPE USE_LOCALE_NUMERIC USE_PERLIO USE_PERL_ATOF USE_REENTRANT_API USE_SITECUSTOMIZE Locally applied patches: Fedora Patch1: Removes date check, Fedora/RHEL specific Fedora Patch3: support for libdir64 Fedora Patch4: use libresolv instead of libbind Fedora Patch5: USE_MM_LD_RUN_PATH Fedora Patch6: Skip hostname tests, due to builders not being network capable Fedora Patch7: Dont run one io test due to random builder failures Fedora Patch9: Fix find2perl to translate ? glob properly (RT#113054) Fedora Patch10: Fix broken atof (RT#109318) Fedora Patch13: Clear $@ before "do" I/O error (RT#113730) Fedora Patch14: Do not truncate syscall() return value to 32 bits (RT#113980) Fedora Patch15: Override the Pod::Simple::parse_file (CPANRT#77530) Fedora Patch16: Do not leak with attribute on my variable (RT#114764) Fedora Patch17: Allow operator after numeric keyword argument (RT#105924) Fedora Patch18: Extend stack in File::Glob::glob, (RT#114984) Fedora Patch19: Do not crash when vivifying $| Fedora Patch20: Fix misparsing of maketext strings (CVE-2012-6329) Fedora Patch21: Add NAME headings to CPAN modules (CPANRT#73396) Fedora Patch22: Fix leaking tied hashes (RT#107000) [1] Fedora Patch23: Fix leaking tied hashes (RT#107000) [2] Fedora Patch24: Fix leaking tied hashes (RT#107000) [3] Fedora Patch25: Fix dead lock in PerlIO after fork from thread (RT#106212) Fedora Patch26: Make regexp safe in a signal handler (RT#114878) Fedora Patch27: Update h2ph(1) documentation (RT#117647) Fedora Patch28: Update pod2html(1) documentation (RT#117623) Fedora Patch29: Document Math::BigInt::CalcEmu requires Math::BigInt (CPAN RT#85015) RHEL Patch30: Use stronger algorithm needed for FIPS in t/op/crypt.t (RT#121591) RHEL Patch31: Make *DBM_File desctructors thread-safe (RT#61912) RHEL Patch32: Use stronger algorithm needed for FIPS in t/op/taint.t (RT#123338) RHEL Patch33: Remove CPU-speed-sensitive test in Benchmark test RHEL Patch34: Make File::Glob work with threads again RHEL Patch35: Fix CRLF conversion in ASCII FTP upload (CPAN RT#41642) RHEL Patch36: Do not leak the temp utf8 copy of namepv (CPAN RT#123786) RHEL Patch37: Fix duplicating PerlIO::encoding when spawning threads (RT#31923) RHEL Patch38: Add SSL support to Net::SMTP (CPAN RT#93823) [1] RHEL Patch39: Add SSL support to Net::SMTP (CPAN RT#93823) [2] RHEL Patch40: Add SSL support to Net::SMTP (CPAN RT#93823) [3] RHEL Patch41: Add SSL support to Net::SMTP (CPAN RT#93823) [4] RHEL Patch42: Do not overload ".." in Math::BigInt (CPAN RT#80182) RHEL Patch43: Fix CVE-2018-18311 Integer overflow leading to buffer overflow RHEL Patch44: Fix a spurious timeout in Net::FTP::close (CPAN RT#18504) Built under linux Compiled at Apr 2 2020 01:18:37 @INC: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .
#!/usr/bin/perl -w # use strict; use Image::Info qw(determine_file_format); local $/; my $bytes = <STDIN>; print "FF: " . determine_file_format($bytes) . "\n";
Subject: image.html

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