X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8d26eaa9a4309e9dbd173120be108b671edad2df..154c4ea9e:/IkiWiki/Wrapper.pm?ds=inline diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm index 7b54caf99..b46bc6aa9 100644 --- a/IkiWiki/Wrapper.pm +++ b/IkiWiki/Wrapper.pm @@ -8,10 +8,31 @@ use File::Spec; use Data::Dumper; use IkiWiki; +sub gen_wrappers () { + debug(gettext("generating wrappers..")); + my %origconfig=(%config); + foreach my $wrapper (@{$config{wrappers}}) { + %config=(%origconfig, %{$wrapper}); + $config{verbose}=$config{setupverbose} + if exists $config{setupverbose}; + $config{syslog}=$config{setupsyslog} + if exists $config{setupsyslog}; + delete @config{qw(setupsyslog setupverbose wrappers genwrappers rebuild)}; + checkconfig(); + if (! $config{cgi} && ! $config{post_commit} && + ! $config{test_receive}) { + $config{post_commit}=1; + } + gen_wrapper(); + } + %config=(%origconfig); +} + +our $program_to_wrap = $0; sub gen_wrapper () { $config{srcdir}=File::Spec->rel2abs($config{srcdir}); $config{destdir}=File::Spec->rel2abs($config{destdir}); - my $this=File::Spec->rel2abs($0); + my $this=File::Spec->rel2abs($program_to_wrap); if (! -x $this) { error(sprintf(gettext("%s doesn't seem to be executable"), $this)); } @@ -29,6 +50,7 @@ sub gen_wrapper () { push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE HTTP_COOKIE REMOTE_USER HTTPS REDIRECT_STATUS + HTTP_HOST SERVER_PORT HTTPS HTTP_ACCEPT REDIRECT_URL} if $config{cgi}; my $envsave=""; foreach my $var (@envsave) { @@ -37,12 +59,9 @@ sub gen_wrapper () { addenv("$var", s); EOF } - - my $test_receive=""; - if ($config{test_receive}) { - require IkiWiki::Receive; - $test_receive=IkiWiki::Receive::gen_wrapper(); - } + + my @wrapper_hooks; + run_hooks(genwrapper => sub { push @wrapper_hooks, shift->() }); my $check_commit_hook=""; my $pre_exec=""; @@ -75,28 +94,72 @@ EOF # memory, a pile up of processes could cause thrashing # otherwise. The fd of the lock is stored in # IKIWIKI_CGILOCK_FD so unlockwiki can close it. - $pre_exec=<<"EOF"; - { - int fd=open("$config{wikistatedir}/cgilock", O_CREAT | O_RDWR, 0666); - if (fd != -1 && flock(fd, LOCK_EX) == 0) { - char *fd_s; - asprintf(&fd_s, "%i", fd); - setenv("IKIWIKI_CGILOCK_FD", fd_s, 1); + # + # A lot of cgi wrapper processes can potentially build + # up and clog an otherwise unloaded web server. To + # partially avoid this, when a GET comes in and the lock + # is already held, rather than blocking a html page is + # constructed that retries. This is enabled by setting + # cgi_overload_delay. + if (defined $config{cgi_overload_delay} && + $config{cgi_overload_delay} =~/^[0-9]+/) { + my $i=int($config{cgi_overload_delay}); + $pre_exec.="#define CGI_OVERLOAD_DELAY $i\n" + if $i > 0; + my $msg=gettext("Please wait"); + $msg=~s/"/\\"/g; + $pre_exec.='#define CGI_PLEASE_WAIT_TITLE "'.$msg."\"\n"; + if (defined $config{cgi_overload_message} && length $config{cgi_overload_message}) { + $msg=$config{cgi_overload_message}; + $msg=~s/"/\\"/g; + } + $pre_exec.='#define CGI_PLEASE_WAIT_BODY "'.$msg."\"\n"; + } + $pre_exec.=<<"EOF"; + lockfd=open("$config{wikistatedir}/cgilock", O_CREAT | O_RDWR, 0666); + if (lockfd != -1) { +#ifdef CGI_OVERLOAD_DELAY + char *request_method = getenv("REQUEST_METHOD"); + if (request_method && strcmp(request_method, "GET") == 0) { + if (lockf(lockfd, F_TLOCK, 0) == 0) { + set_cgilock_fd(lockfd); + } + else { + printf("Content-Type: text/html\\nRefresh: %i; URL=%s\\n\\n
%s
", + CGI_OVERLOAD_DELAY, + getenv("REQUEST_URI"), + CGI_PLEASE_WAIT_TITLE, + CGI_PLEASE_WAIT_BODY); + exit(0); + } + } + else if (lockf(lockfd, F_LOCK, 0) == 0) { + set_cgilock_fd(lockfd); } +#else + if (lockf(lockfd, F_LOCK, 0) == 0) { + set_cgilock_fd(lockfd); + } +#endif } EOF } + my $set_background_command=''; + if (defined $config{wrapper_background_command} && + length $config{wrapper_background_command}) { + my $background_command=delete $config{wrapper_background_command}; + $set_background_command=~s/"/\\"/g; + $set_background_command='#define BACKGROUND_COMMAND "'.$background_command.'"'; + } + $Data::Dumper::Indent=0; # no newlines my $configstring=Data::Dumper->Dump([\%config], ['*config']); $configstring=~s/\\/\\\\/g; $configstring=~s/"/\\"/g; $configstring=~s/\n/\\n/g; - #translators: The first parameter is a filename, and the second is - #translators: a (probably not translated) error message. - open(OUT, ">$wrapper.c") || error(sprintf(gettext("failed to write %s: %s"), "$wrapper.c", $!)); - print OUT <<"EOF"; + writefile(basename("$wrapper.c"), dirname($wrapper), <<"EOF"); /* A wrapper for ikiwiki, can be safely made suid. */ #include