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| author | Eric Andersen <andersen@codepoet.org> | 2002-04-26 23:59:12 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2002-04-26 23:59:12 +0000 |
| commit | 1323c940fd651a818e133f5c13f28b708998420a (patch) | |
| tree | a73ac5d076263be38e8e419ea07b565a1acf0296 /networking/nc.c | |
| parent | 00a6a750357d49d3e9cedf3edee7ae2aceae6748 (diff) | |
| download | busybox-w32-1323c940fd651a818e133f5c13f28b708998420a.tar.gz busybox-w32-1323c940fd651a818e133f5c13f28b708998420a.tar.bz2 busybox-w32-1323c940fd651a818e133f5c13f28b708998420a.zip | |
Add netcat -i option, per patch from Cristian Ionescu-Idbohrn
<cristian.ionescu-idbohrn@axis.com>
Diffstat (limited to 'networking/nc.c')
| -rw-r--r-- | networking/nc.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/networking/nc.c b/networking/nc.c index 5335872e5..e1741cdb3 100644 --- a/networking/nc.c +++ b/networking/nc.c | |||
| @@ -40,17 +40,22 @@ | |||
| 40 | #include <sys/ioctl.h> | 40 | #include <sys/ioctl.h> |
| 41 | #include "busybox.h" | 41 | #include "busybox.h" |
| 42 | 42 | ||
| 43 | #define GAPING_SECURITY_HOLE | ||
| 44 | |||
| 43 | int nc_main(int argc, char **argv) | 45 | int nc_main(int argc, char **argv) |
| 44 | { | 46 | { |
| 45 | int do_listen = 0, lport = 0, tmpfd, opt, sfd; | 47 | int do_listen = 0, lport = 0, delay = 0, tmpfd, opt, sfd; |
| 46 | char buf[BUFSIZ]; | 48 | char buf[BUFSIZ]; |
| 49 | #ifdef GAPING_SECURITY_HOLE | ||
| 50 | char * pr00gie = NULL; | ||
| 51 | #endif | ||
| 47 | 52 | ||
| 48 | struct sockaddr_in address; | 53 | struct sockaddr_in address; |
| 49 | struct hostent *hostinfo; | 54 | struct hostent *hostinfo; |
| 50 | 55 | ||
| 51 | fd_set readfds, testfds; | 56 | fd_set readfds, testfds; |
| 52 | 57 | ||
| 53 | while ((opt = getopt(argc, argv, "lp:")) > 0) { | 58 | while ((opt = getopt(argc, argv, "lp:i:e:")) > 0) { |
| 54 | switch (opt) { | 59 | switch (opt) { |
| 55 | case 'l': | 60 | case 'l': |
| 56 | do_listen++; | 61 | do_listen++; |
| @@ -58,11 +63,27 @@ int nc_main(int argc, char **argv) | |||
| 58 | case 'p': | 63 | case 'p': |
| 59 | lport = atoi(optarg); | 64 | lport = atoi(optarg); |
| 60 | break; | 65 | break; |
| 66 | case 'i': | ||
| 67 | delay = atoi(optarg); | ||
| 68 | break; | ||
| 69 | #ifdef GAPING_SECURITY_HOLE | ||
| 70 | case 'e': | ||
| 71 | pr00gie = optarg; | ||
| 72 | break; | ||
| 73 | #endif | ||
| 61 | default: | 74 | default: |
| 62 | show_usage(); | 75 | show_usage(); |
| 63 | } | 76 | } |
| 64 | } | 77 | } |
| 65 | 78 | ||
| 79 | #ifdef GAPING_SECURITY_HOLE | ||
| 80 | if (pr00gie) { | ||
| 81 | /* won't need stdin */ | ||
| 82 | close (fileno(stdin)); | ||
| 83 | } | ||
| 84 | #endif /* GAPING_SECURITY_HOLE */ | ||
| 85 | |||
| 86 | |||
| 66 | if ((do_listen && optind != argc) || (!do_listen && optind + 2 != argc)) | 87 | if ((do_listen && optind != argc) || (!do_listen && optind + 2 != argc)) |
| 67 | show_usage(); | 88 | show_usage(); |
| 68 | 89 | ||
| @@ -100,6 +121,20 @@ int nc_main(int argc, char **argv) | |||
| 100 | perror_msg_and_die("connect"); | 121 | perror_msg_and_die("connect"); |
| 101 | } | 122 | } |
| 102 | 123 | ||
| 124 | #ifdef GAPING_SECURITY_HOLE | ||
| 125 | /* -e given? */ | ||
| 126 | if (pr00gie) { | ||
| 127 | dup2(sfd, 0); | ||
| 128 | close(sfd); | ||
| 129 | dup2 (0, 1); | ||
| 130 | dup2 (0, 2); | ||
| 131 | execl (pr00gie, pr00gie, NULL); | ||
| 132 | /* Don't print stuff or it will go over the wire.... */ | ||
| 133 | _exit(-1); | ||
| 134 | } | ||
| 135 | #endif /* GAPING_SECURITY_HOLE */ | ||
| 136 | |||
| 137 | |||
| 103 | FD_ZERO(&readfds); | 138 | FD_ZERO(&readfds); |
| 104 | FD_SET(sfd, &readfds); | 139 | FD_SET(sfd, &readfds); |
| 105 | FD_SET(STDIN_FILENO, &readfds); | 140 | FD_SET(STDIN_FILENO, &readfds); |
| @@ -131,6 +166,9 @@ int nc_main(int argc, char **argv) | |||
| 131 | 166 | ||
| 132 | if (full_write(ofd, buf, nread) < 0) | 167 | if (full_write(ofd, buf, nread) < 0) |
| 133 | perror_msg_and_die("write"); | 168 | perror_msg_and_die("write"); |
| 169 | if (delay > 0) { | ||
| 170 | sleep(delay); | ||
| 171 | } | ||
| 134 | } | 172 | } |
| 135 | } | 173 | } |
| 136 | } | 174 | } |