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File ucspi-tcp-0.88-ssl.diff of Package ucspi-tcp (Revision 8)
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diff -u ../ucspi-tcp-0.88/conf-cc ./conf-cc --- ../ucspi-tcp-0.88/conf-cc Sat Mar 18 16:18:42 2000 +++ ./conf-cc Thu Nov 20 16:49:54 2003 @@ -1,3 +1,3 @@ -gcc -O2 +gcc -O2 -I/opt/include This will be used to compile .c files. diff -u ../ucspi-tcp-0.88/conf-home ./conf-home --- ../ucspi-tcp-0.88/conf-home Sat Mar 18 16:18:42 2000 +++ ./conf-home Fri Nov 21 12:38:23 2003 @@ -1,4 +1,4 @@ -/usr/local +/opt This is the ucspi-tcp home directory. Programs will be installed in .../bin. diff -u ../ucspi-tcp-0.88/conf-ld ./conf-ld --- ../ucspi-tcp-0.88/conf-ld Sat Mar 18 16:18:42 2000 +++ ./conf-ld Thu Nov 20 16:50:01 2003 @@ -1,3 +1,3 @@ -gcc -s +gcc -s -L/opt/lib This will be used to link .o files into an executable. --- ucspi-tcp-0.88/tcpserver.c.orig 2009-06-01 19:28:52.000000000 +0200 +++ ucspi-tcp-0.88/tcpserver.c 2009-06-01 19:36:13.000000000 +0200 @@ -1,6 +1,7 @@ #include <sys/types.h> #include <sys/param.h> #include <netdb.h> +#include <openssl/ssl.h> #include "uint16.h" #include "str.h" #include "byte.h" @@ -38,6 +39,19 @@ int flagremotehost = 1; int flagparanoid = 0; unsigned long timeout = 26; +#ifdef WITH_SSL +int flagssl = 0; +unsigned long jailuid = 0; +struct stralloc certfile = {0}; +#define CERTFILE "./cert.pem" +struct stralloc cafile = {0}; +struct stralloc jaildir = {0}; +#define JAILDIR ".jail" + +void translate(SSL*, int, int, unsigned int); +#endif + + uint32 netif = 0; static stralloc tcpremoteinfo; @@ -271,6 +285,7 @@ void usage(void) { +#ifndef WITH_SSL strerr_warn1("\ tcpserver: usage: tcpserver \ [ -461UXpPhHrRoOdDqQv ] \ @@ -284,6 +299,24 @@ [ -t timeout ] \ [ -I interface ] \ host port program",0); +#else + strerr_warn1("\ +tcpserver: usage: tcpserver \ +[ -1UXpPhHrRoOdDqQsSv ] \ +[ -c limit ] \ +[ -x rules.cdb ] \ +[ -B banner ] \ +[ -g gid ] \ +[ -u uid ] \ +[ -b backlog ] \ +[ -l localname ] \ +[ -t timeout ] \ +[ -n certfile ] \ +[ -a cafile ] \ +[ -j jailuid ] \ +[ -J jaildir ] \ +host port program",0); +#endif _exit(100); } @@ -334,7 +367,22 @@ int s; int t; +#ifdef WITH_SSL + BIO *sbio; + SSL *ssl; + SSL_CTX *ctx; + int pi2c[2], pi4c[2]; + + ctx = NULL; + + if (!stralloc_copys(&certfile, CERTFILE) || !stralloc_0(&certfile) ) + strerr_die2x(111,FATAL,"out of memory"); + if (!stralloc_copys(&jaildir, JAILDIR) || !stralloc_0(&jaildir) ) + strerr_die2x(111,FATAL,"out of memory"); + while ((opt = getopt(argc,argv,"dDvqQhHrRsS1UXx:t:u:g:l:b:B:c:n:a:j:J:pPoO")) != opteof) +#else while ((opt = getopt(argc,argv,"46dDvqQhHrR1UXx:t:u:g:l:b:B:c:I:pPoO")) != opteof) +#endif switch(opt) { case 'b': scan_ulong(optarg,&backlog); break; case 'c': scan_ulong(optarg,&limit); break; @@ -364,6 +412,23 @@ case '4': noipv6 = 1; break; case '6': forcev6 = 1; break; case 'l': localhost = optarg; break; +#ifdef WITH_SSL + case 's': flagssl = 1; break; + case 'S': flagssl = 0; break; + case 'n': if (!stralloc_copys(&certfile, optarg) || + !stralloc_0(&certfile) ) + strerr_die2x(111,FATAL,"out of memory"); + break; + case 'a': if (!stralloc_copys(&cafile, optarg) || + !stralloc_0(&cafile) ) + strerr_die2x(111,FATAL,"out of memory"); + break; + case 'j': scan_ulong(optarg,&jailuid); break; + case 'J': if (!stralloc_copys(&jaildir, optarg) || + !stralloc_0(&jaildir) ) + strerr_die2x(111,FATAL,"out of memory"); + break; +#endif default: usage(); } argc -= optind; @@ -408,6 +473,24 @@ noipv6=1; } +#ifdef WITH_SSL + if (flagssl == 1) { + /* setup SSL context (load key and cert into ctx) */ + SSL_library_init(); + ctx=SSL_CTX_new(SSLv23_server_method()); + if (!ctx) strerr_die2x(111,FATAL,"unable to create SSL context"); + + if(SSL_CTX_use_RSAPrivateKey_file(ctx, certfile.s, SSL_FILETYPE_PEM) != 1) + strerr_die2x(111,FATAL,"unable to load RSA private key"); + if(SSL_CTX_use_certificate_file(ctx, certfile.s, SSL_FILETYPE_PEM) != 1) + strerr_die2x(111,FATAL,"unable to load certificate"); + if ( cafile.s + && 1 != SSL_CTX_load_verify_locations(ctx,cafile.s,0) + ) + strerr_die2x(111,FATAL,"unable to load cafile"); + } +#endif + s = socket_tcp6(); if (s == -1) strerr_die2sys(111,FATAL,"unable to create socket: "); @@ -419,10 +502,16 @@ strerr_die2sys(111,FATAL,"unable to listen: "); ndelay_off(s); +#ifdef WITH_SSL + if (!jailuid) { /* else delay to after chroot */ +#endif if (gid) if (prot_gid(gid) == -1) strerr_die2sys(111,FATAL,"unable to set gid: "); if (uid) if (prot_uid(uid) == -1) strerr_die2sys(111,FATAL,"unable to set uid: "); +#ifdef WITH_SSL + } /* !jailuid */ +#endif localportstr[fmt_ulong(localportstr,localport)] = 0; @@ -457,6 +546,55 @@ sig_unblock(sig_child); sig_uncatch(sig_term); sig_uncatch(sig_pipe); +#ifdef WITH_SSL + if (flagssl == 1) { + if (pipe(pi2c) != 0) + strerr_die2sys(111,DROP,"unable to create pipe: "); + if (pipe(pi4c) != 0) + strerr_die2sys(111,DROP,"unable to create pipe: "); + switch(fork()) { + case 0: + close(0); close(1); + close(pi2c[1]); + close(pi4c[0]); + if ((fd_move(0,pi2c[0]) == -1) || (fd_move(1,pi4c[1]) == -1)) + strerr_die2sys(111,DROP,"unable to set up descriptors: "); + /* signals are allready set in the parent */ + break; /* drop out to non-ssl case */ + case -1: + strerr_die2sys(111,DROP,"unable to fork: "); + default: + if (jailuid) { /* chroot */ + if (chdir(jaildir.s)) + strerr_die2sys(111,FATAL,"unable to chdir to jail: "); + if (chroot(".")) + strerr_die2sys(111,FATAL,"unable to chroot to jail: "); + prot_gid(jailuid); /* just try ... not really important */ + if (prot_uid(jailuid) == -1) + strerr_die2sys(111,FATAL,"unable to set jailuid: "); + } /* jailuid */ + ssl = SSL_new(ctx); + if (!ssl) + strerr_die2x(111,DROP,"unable to set up SSL session"); + sbio = BIO_new_socket(0,BIO_NOCLOSE); + if (!sbio) + strerr_die2x(111,DROP,"unable to set up BIO socket"); + SSL_set_bio(ssl,sbio,sbio); + close(pi2c[0]); + close(pi4c[1]); + translate(ssl, pi2c[1], pi4c[0], 3600); + _exit(0); + } + /* we're working child */ + if (jailuid) { /* delayed setuidgid */ + if (gid) if (prot_gid(gid) == -1) + strerr_die2sys(111,FATAL,"unable to set gid: "); + if (uid) if (prot_uid(uid) == -1) + strerr_die2sys(111,FATAL,"unable to set uid: "); + } /* jailuid */ + } + +#endif pathexec(argv); strerr_die4sys(111,DROP,"unable to run ",*argv,": "); case -1: @@ -466,3 +604,102 @@ close(t); } } + +#ifdef WITH_SSL +static int allwrite(int fd, char *buf, int len) +{ + int w; + + while (len) { + w = write(fd,buf,len); + if (w == -1) { + if (errno == error_intr) continue; + return -1; /* note that some data may have been written */ + } + if (w == 0) ; /* luser's fault */ + buf += w; + len -= w; + } + return 0; +} + +static int allwritessl(SSL* ssl, char *buf, int len) +{ + int w; + + while (len) { + w = SSL_write(ssl,buf,len); + if (w == -1) { + if (errno == error_intr) continue; + return -1; /* note that some data may have been written */ + } + if (w == 0) ; /* luser's fault */ + buf += w; + len -= w; + } + return 0; +} + +char tbuf[2048]; + +void translate(SSL* ssl, int clearout, int clearin, unsigned int iotimeout) +{ + struct taia now; + struct taia deadline; + iopause_fd iop[2]; + int flagexitasap; + int iopl; + int sslout, sslin; + int n, r; + + sslin = SSL_get_fd(ssl); + sslout = SSL_get_fd(ssl); + if (sslin == -1 || sslout == -1) + strerr_die2x(111,DROP,"unable to set up SSL connection"); + + flagexitasap = 0; + + if (SSL_accept(ssl)<=0) + strerr_die2x(111,DROP,"unable to accept SSL connection"); + + while (!flagexitasap) { + taia_now(&now); + taia_uint(&deadline,iotimeout); + taia_add(&deadline,&now,&deadline); + + /* fill iopause struct */ + iopl = 2; + iop[0].fd = sslin; + iop[0].events = IOPAUSE_READ; + iop[1].fd = clearin; + iop[1].events = IOPAUSE_READ; + + /* do iopause read */ + iopause(iop,iopl,&deadline,&now); + if (iop[0].revents) { + /* data on sslin */ + n = SSL_read(ssl, tbuf, sizeof(tbuf)); + if ( n < 0 ) + strerr_die2sys(111,DROP,"unable to read form network: "); + if ( n == 0 ) + flagexitasap = 1; + r = allwrite(clearout, tbuf, n); + if ( r < 0 ) + strerr_die2sys(111,DROP,"unable to write to client: "); + } + if (iop[1].revents) { + /* data on clearin */ + n = read(clearin, tbuf, sizeof(tbuf)); + if ( n < 0 ) + strerr_die2sys(111,DROP,"unable to read form client: "); + if ( n == 0 ) + flagexitasap = 1; + r = allwritessl(ssl, tbuf, n); + if ( r < 0 ) + strerr_die2sys(111,DROP,"unable to write to network: "); + } + if (!iop[0].revents && !iop[1].revents) + strerr_die2x(0, DROP,"timeout reached without input"); + } +} +#endif --- ucspi-tcp-0.88/Makefile.orig 2009-06-01 19:28:52.000000000 +0200 +++ ucspi-tcp-0.88/Makefile 2009-06-01 19:50:22.000000000 +0200 @@ -1,5 +1,13 @@ # Don't edit Makefile! Use conf-* for configuration. +DEFINES=-DWITH_SSL +#add -DWITH_SSL to enable ssl support + +# LIBS for additional libraries and INCS for additional includes +LIBS=-lssl -lcrypto +#INCS=-I/usr/local/include +OPENSSLBIN=openssl + SHELL=/bin/sh default: it @@ -153,6 +161,10 @@ > choose chmod 755 choose +clean: \ +TARGETS + rm -f `cat TARGETS` + commands.o: \ compile commands.c buffer.h stralloc.h gen_alloc.h str.h case.h \ commands.h @@ -755,7 +767,7 @@ load tcpserver.o rules.o remoteinfo6.o timeoutconn6.o cdb.a dns.a \ time.a unix.a byte.a socket.lib ./load tcpserver rules.o remoteinfo6.o timeoutconn6.o cdb.a \ - dns.a time.a unix.a byte.a `cat socket.lib` + dns.a time.a unix.a byte.a $(LIBS) `cat socket.lib` tcpserver.o: \ compile tcpserver.c uint16.h str.h byte.h fmt.h scan.h ip4.h fd.h \ @@ -764,7 +776,7 @@ socket.h uint16.h ndelay.h remoteinfo.h stralloc.h uint16.h rules.h \ stralloc.h sig.h dns.h stralloc.h iopause.h taia.h tai.h uint64.h \ taia.h uint32.h - ./compile tcpserver.c + ./compile $(DEFINES) $(INCS) tcpserver.c time.a: \ makelib iopause.o tai_pack.o taia_add.o taia_approx.o taia_frac.o \ @@ -861,6 +873,19 @@ > who@ chmod 755 who@ +cert: + ${OPENSSLBIN} req -new -x509 -nodes \ + -out cert.pem -days 366 \ + -keyout cert.pem + +cert-req: + ${OPENSSLBIN} req -new -nodes \ + -out req.pem \ + -keyout cert.pem + @echo + @echo "Send req.pem to your CA to obtain signed_req.pem, and do:" + @echo "cat signed_req.pem >> `head -1 conf-qmail`/control/cert.pem" + socket_conn6.o: \ compile socket_conn6.c socket.h uint16.h haveip6.h error.h ip6.h \ uint32.h
