diff options
Diffstat (limited to 'network/netcat-openbsd/patches/0014-misc-failures-and-features.patch')
| -rw-r--r-- | network/netcat-openbsd/patches/0014-misc-failures-and-features.patch | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/network/netcat-openbsd/patches/0014-misc-failures-and-features.patch b/network/netcat-openbsd/patches/0014-misc-failures-and-features.patch deleted file mode 100644 index e3b7bea400..0000000000 --- a/network/netcat-openbsd/patches/0014-misc-failures-and-features.patch +++ /dev/null @@ -1,145 +0,0 @@ -From: Aron Xu <aron@debian.org> -Date: Mon, 13 Feb 2012 19:06:52 +0800 -Subject: misc failures and features - ---- - Makefile | 3 ++- - nc.1 | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ - netcat.c | 14 ++++++++++++-- - 3 files changed, 65 insertions(+), 3 deletions(-) - ---- a/Makefile -+++ b/Makefile -@@ -3,7 +3,8 @@ - PROG= nc - SRCS= netcat.c atomicio.c socks.c - --LIBS= `pkg-config --libs libbsd` -lresolv -+PKG_CONFIG ?= pkg-config -+LIBS= `$(PKG_CONFIG) --libs libbsd` -lresolv - OBJS= $(SRCS:.c=.o) - CFLAGS= -g -O2 - LDFLAGS= -Wl,--no-add-needed ---- a/nc.1 -+++ b/nc.1 -@@ -365,6 +365,54 @@ and which side is being used as a - The connection may be terminated using an - .Dv EOF - .Pq Sq ^D . -+.Pp -+There is no -+.Fl c -+or -+.Fl e -+option in this netcat, but you still can execute a command after connection -+being established by redirecting file descriptors. Be cautious here because -+opening a port and let anyone connected execute arbitrary command on your -+site is DANGEROUS. If you really need to do this, here is an example: -+.Pp -+On -+.Sq server -+side: -+.Pp -+.Dl $ rm -f /tmp/f; mkfifo /tmp/f -+.Dl $ cat /tmp/f | /bin/sh -i 2>&1 | nc -l 127.0.0.1 1234 > /tmp/f -+.Pp -+On -+.Sq client -+side: -+.Pp -+.Dl $ nc host.example.com 1234 -+.Dl $ (shell prompt from host.example.com) -+.Pp -+By doing this, you create a fifo at /tmp/f and make nc listen at port 1234 -+of address 127.0.0.1 on -+.Sq server -+side, when a -+.Sq client -+establishes a connection successfully to that port, /bin/sh gets executed -+on -+.Sq server -+side and the shell prompt is given to -+.Sq client -+side. -+.Pp -+When connection is terminated, -+.Nm -+quits as well. Use -+.Fl k -+if you want it keep listening, but if the command quits this option won't -+restart it or keep -+.Nm -+running. Also don't forget to remove the file descriptor once you don't need -+it anymore: -+.Pp -+.Dl $ rm -f /tmp/f -+.Pp - .Sh DATA TRANSFER - The example in the previous section can be expanded to build a - basic data transfer model. -@@ -517,6 +565,9 @@ Original implementation by - .br - Rewritten with IPv6 support by - .An Eric Jackson Aq Mt ericj@monkey.org . -+.br -+Modified for Debian port by Aron Xu -+.Aq aron@debian.org . - .Sh CAVEATS - UDP port scans using the - .Fl uz ---- a/netcat.c -+++ b/netcat.c -@@ -98,6 +98,7 @@ - #include <netdb.h> - #include <poll.h> - #include <signal.h> -+#include <stddef.h> - #include <stdarg.h> - #include <stdio.h> - #include <stdlib.h> -@@ -246,7 +247,10 @@ main(int argc, char *argv[]) - struct addrinfo hints; - struct servent *sv; - socklen_t len; -- struct sockaddr_storage cliaddr; -+ union { -+ struct sockaddr_storage storage; -+ struct sockaddr_un forunix; -+ } cliaddr; - char *proxy = NULL, *proxyport = NULL; - const char *errstr; - struct addrinfo proxyhints; -@@ -948,6 +952,8 @@ unix_bind(char *path, int flags) - 0)) == -1) - return -1; - -+ unlink(path); -+ - memset(&s_un, 0, sizeof(struct sockaddr_un)); - s_un.sun_family = AF_UNIX; - -@@ -1073,8 +1079,10 @@ unix_connect(char *path) - if ((s = unix_bind(unix_dg_tmp_socket, SOCK_CLOEXEC)) == -1) - return -1; - } else { -- if ((s = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0)) == -1) -+ if ((s = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0)) == -1) { -+ errx(1, "create unix socket failed"); - return -1; -+ } - } - - memset(&s_un, 0, sizeof(struct sockaddr_un)); -@@ -1084,10 +1092,12 @@ unix_connect(char *path) - sizeof(s_un.sun_path)) { - close(s); - errno = ENAMETOOLONG; -+ warn("unix connect abandoned"); - return -1; - } - if (connect(s, (struct sockaddr *)&s_un, sizeof(s_un)) == -1) { - save_errno = errno; -+ warn("unix connect failed"); - close(s); - errno = save_errno; - return -1; |