Sean Middleditch | ce753de | 2009-03-14 02:20:03 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Sean Middleditch |
| 3 | * sean@sourcemud.org |
| 4 | * |
| 5 | * The author or authors of this code dedicate any and all copyright interest |
| 6 | * in this code to the public domain. We make this dedication for the benefit |
| 7 | * of the public at large and to the detriment of our heirs and successors. We |
| 8 | * intend this dedication to be an overt act of relinquishment in perpetuity of |
| 9 | * all present and future rights to this code under copyright law. |
| 10 | */ |
| 11 | |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 12 | #include <sys/socket.h> |
| 13 | #include <netinet/in.h> |
| 14 | #include <arpa/inet.h> |
| 15 | #include <poll.h> |
| 16 | #include <errno.h> |
| 17 | #include <stdio.h> |
| 18 | #include <string.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <ctype.h> |
| 21 | #include <unistd.h> |
| 22 | |
Sean Middleditch | 9de1598 | 2009-03-14 03:35:49 -0400 | [diff] [blame] | 23 | #ifdef HAVE_ZLIB |
| 24 | #include "zlib.h" |
| 25 | #endif |
| 26 | |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 27 | #include "libtelnet.h" |
| 28 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 29 | struct conn_t { |
| 30 | const char *name; |
| 31 | int sock; |
| 32 | struct libtelnet_t telnet; |
| 33 | struct conn_t *remote; |
| 34 | }; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 35 | |
Sean Middleditch | 0f91258 | 2009-03-14 01:57:07 -0400 | [diff] [blame] | 36 | static const char *get_cmd(unsigned char cmd) { |
| 37 | static char buffer[4]; |
| 38 | |
| 39 | switch (cmd) { |
| 40 | case 255: return "IAC"; |
| 41 | case 254: return "DONT"; |
| 42 | case 253: return "DO"; |
| 43 | case 252: return "WONT"; |
| 44 | case 251: return "WILL"; |
| 45 | case 250: return "SB"; |
| 46 | case 249: return "GA"; |
| 47 | case 248: return "EL"; |
| 48 | case 247: return "EC"; |
| 49 | case 246: return "AYT"; |
| 50 | case 245: return "AO"; |
| 51 | case 244: return "IP"; |
| 52 | case 243: return "BREAK"; |
| 53 | case 242: return "DM"; |
| 54 | case 241: return "NOP"; |
| 55 | case 240: return "SE"; |
| 56 | case 239: return "EOR"; |
| 57 | case 238: return "ABORT"; |
| 58 | case 237: return "SUSP"; |
| 59 | case 236: return "xEOF"; |
| 60 | default: |
| 61 | snprintf(buffer, sizeof(buffer), "%d", (int)cmd); |
| 62 | return buffer; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | static const char *get_opt(unsigned char opt) { |
| 67 | switch (opt) { |
| 68 | case 0: return "BINARY"; |
| 69 | case 1: return "ECHO"; |
| 70 | case 2: return "RCP"; |
| 71 | case 3: return "SGA"; |
| 72 | case 4: return "NAMS"; |
| 73 | case 5: return "STATUS"; |
| 74 | case 6: return "TM"; |
| 75 | case 7: return "RCTE"; |
| 76 | case 8: return "NAOL"; |
| 77 | case 9: return "NAOP"; |
| 78 | case 10: return "NAOCRD"; |
| 79 | case 11: return "NAOHTS"; |
| 80 | case 12: return "NAOHTD"; |
| 81 | case 13: return "NAOFFD"; |
| 82 | case 14: return "NAOVTS"; |
| 83 | case 15: return "NAOVTD"; |
| 84 | case 16: return "NAOLFD"; |
| 85 | case 17: return "XASCII"; |
| 86 | case 18: return "LOGOUT"; |
| 87 | case 19: return "BM"; |
| 88 | case 20: return "DET"; |
| 89 | case 21: return "SUPDUP"; |
| 90 | case 22: return "SUPDUPOUTPUT"; |
| 91 | case 23: return "SNDLOC"; |
| 92 | case 24: return "TTYPE"; |
| 93 | case 25: return "EOR"; |
| 94 | case 26: return "TUID"; |
| 95 | case 27: return "OUTMRK"; |
| 96 | case 28: return "TTYLOC"; |
| 97 | case 29: return "3270REGIME"; |
| 98 | case 30: return "X3PAD"; |
| 99 | case 31: return "NAWS"; |
| 100 | case 32: return "TSPEED"; |
| 101 | case 33: return "LFLOW"; |
| 102 | case 34: return "LINEMODE"; |
| 103 | case 35: return "XDISPLOC"; |
| 104 | case 36: return "ENVIRON"; |
| 105 | case 37: return "AUTHENTICATION"; |
| 106 | case 38: return "ENCRYPT"; |
| 107 | case 39: return "NEW-ENVIRON"; |
| 108 | case 70: return "MSSP"; |
| 109 | case 85: return "COMPRESS"; |
| 110 | case 86: return "COMPRESS2"; |
| 111 | case 93: return "ZMP"; |
| 112 | case 255: return "EXOPL"; |
| 113 | default: return "unknown"; |
| 114 | } |
| 115 | } |
| 116 | |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 117 | static void print_buffer(unsigned char *buffer, unsigned int size) { |
| 118 | unsigned int i; |
| 119 | for (i = 0; i != size; ++i) { |
| 120 | if (buffer[i] == ' ' || (isprint(buffer[i]) && !isspace(buffer[i]))) |
| 121 | printf("%c", (char)buffer[i]); |
| 122 | else if (buffer[i] == '\n') |
| 123 | printf("<%02X>\n", (int)buffer[i]); |
| 124 | else |
| 125 | printf("<%02X>", (int)buffer[i]); |
| 126 | } |
| 127 | } |
| 128 | |
Sean Middleditch | 78f400f | 2009-03-14 01:26:43 -0400 | [diff] [blame] | 129 | void libtelnet_data_cb(struct libtelnet_t *telnet, unsigned char *buffer, |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 130 | unsigned int size, void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 131 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 132 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 133 | printf("%s DATA: ", conn->name); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 134 | print_buffer(buffer, size); |
| 135 | printf("\e[0m\n"); |
| 136 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 137 | libtelnet_send_data(&conn->remote->telnet, buffer, size, |
| 138 | conn->remote); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 139 | } |
| 140 | |
Sean Middleditch | 78f400f | 2009-03-14 01:26:43 -0400 | [diff] [blame] | 141 | void libtelnet_send_cb(struct libtelnet_t *telnet, unsigned char *buffer, |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 142 | unsigned int size, void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 143 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 144 | int rs; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 145 | |
| 146 | /* DONT SPAM |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 147 | printf("%s SEND: ", conn->name); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 148 | print_buffer(buffer, size); |
| 149 | printf("\e[0m\n"); |
| 150 | */ |
| 151 | |
| 152 | /* send data */ |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 153 | while (size > 0) { |
| 154 | if ((rs = send(conn->sock, buffer, size, 0)) == -1) { |
| 155 | fprintf(stderr, "send() failed: %s\n", strerror(errno)); |
| 156 | exit(1); |
| 157 | } else if (rs == 0) { |
| 158 | fprintf(stderr, "send() unexpectedly returned 0\n"); |
| 159 | exit(1); |
| 160 | } |
| 161 | |
| 162 | /* update pointer and size to see if we've got more to send */ |
| 163 | buffer += rs; |
| 164 | size -= rs; |
| 165 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | void libtelnet_command_cb(struct libtelnet_t *telnet, unsigned char cmd, |
| 169 | void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 170 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 171 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 172 | printf("%s IAC %s\e[0m\n", conn->name, get_cmd(cmd)); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 173 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 174 | libtelnet_send_command(&conn->remote->telnet, cmd, conn->remote); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | void libtelnet_negotiate_cb(struct libtelnet_t *telnet, unsigned char cmd, |
| 178 | unsigned char opt, void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 179 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 180 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 181 | printf("%s IAC %s %d (%s)\e[0m\n", conn->name, get_cmd(cmd), |
Sean Middleditch | 0f91258 | 2009-03-14 01:57:07 -0400 | [diff] [blame] | 182 | (int)opt, get_opt(opt)); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 183 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 184 | libtelnet_send_negotiate(&conn->remote->telnet, cmd, opt, |
| 185 | conn->remote); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | void libtelnet_subrequest_cb(struct libtelnet_t *telnet, unsigned char type, |
| 189 | unsigned char *buffer, unsigned int size, void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 190 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 191 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 192 | printf("%s SUB %d (%s)", conn->name, (int)type, get_opt(type)); |
Sean Middleditch | 0f91258 | 2009-03-14 01:57:07 -0400 | [diff] [blame] | 193 | if (size > 0) { |
| 194 | printf(": "); |
| 195 | print_buffer(buffer, size); |
| 196 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 197 | printf("\e[0m\n"); |
| 198 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 199 | libtelnet_send_subrequest(&conn->remote->telnet, type, buffer, size, |
| 200 | conn->remote); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 201 | } |
| 202 | |
Sean Middleditch | 61f8eb6 | 2009-03-14 04:57:27 -0400 | [diff] [blame^] | 203 | void libtelnet_compress_cb(struct libtelnet_t *telnet, char enabled, |
| 204 | void *user_data) { |
| 205 | struct conn_t *conn = (struct conn_t*)user_data; |
| 206 | |
| 207 | printf("%s COMPRESSION %s\e[0m\n", conn->name, enabled ? "ON" : "OFF"); |
| 208 | } |
| 209 | |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 210 | void libtelnet_error_cb(struct libtelnet_t *telnet, |
| 211 | enum libtelnet_error_t error, void *user_data) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 212 | struct conn_t *conn = (struct conn_t*)user_data; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 213 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 214 | printf("%s ERROR: %d\e[0m\n", conn->name, (int)error); |
Sean Middleditch | 9de1598 | 2009-03-14 03:35:49 -0400 | [diff] [blame] | 215 | exit(1); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | int main(int argc, char **argv) { |
| 219 | unsigned char buffer[512]; |
| 220 | int listen_sock; |
| 221 | int rs; |
| 222 | struct sockaddr_in addr; |
| 223 | socklen_t addrlen; |
| 224 | struct pollfd pfd[2]; |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 225 | struct conn_t server; |
| 226 | struct conn_t client; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 227 | |
| 228 | /* check usage */ |
| 229 | if (argc != 4) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 230 | fprintf(stderr, "Usage:\n ./telnet-proxy <remote ip> <remote port> " |
| 231 | "<local port>\n"); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 232 | return 1; |
| 233 | } |
| 234 | |
| 235 | /* create listening socket */ |
| 236 | if ((listen_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
| 237 | fprintf(stderr, "socket() failed: %s\n", strerror(errno)); |
| 238 | return 1; |
| 239 | } |
| 240 | |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 241 | /* reuse address option */ |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 242 | rs = 1; |
| 243 | setsockopt(listen_sock, SOL_SOCKET, SO_REUSEADDR, &rs, sizeof(rs)); |
| 244 | |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 245 | /* bind to listening addr/port */ |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 246 | memset(&addr, 0, sizeof(addr)); |
| 247 | addr.sin_family = AF_INET; |
| 248 | addr.sin_addr.s_addr = INADDR_ANY; |
| 249 | addr.sin_port = htons(strtol(argv[3], 0, 10)); |
| 250 | if (bind(listen_sock, (struct sockaddr *)&addr, sizeof(addr)) == -1) { |
| 251 | fprintf(stderr, "bind() failed: %s\n", strerror(errno)); |
| 252 | return 1; |
| 253 | } |
| 254 | |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 255 | /* wait for client */ |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 256 | if (listen(listen_sock, 5) == -1) { |
| 257 | fprintf(stderr, "listen() failed: %s\n", strerror(errno)); |
| 258 | return 1; |
| 259 | } |
Sean Middleditch | 9de1598 | 2009-03-14 03:35:49 -0400 | [diff] [blame] | 260 | addrlen = sizeof(addr); |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 261 | if ((client.sock = accept(listen_sock, (struct sockaddr *)&addr, &addrlen)) == -1) { |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 262 | fprintf(stderr, "accept() failed: %s\n", strerror(errno)); |
| 263 | return 1; |
| 264 | } |
| 265 | |
| 266 | /* create server socket */ |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 267 | if ((server.sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 268 | fprintf(stderr, "socket() failed: %s\n", strerror(errno)); |
| 269 | return 1; |
| 270 | } |
| 271 | |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 272 | /* connect to server */ |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 273 | memset(&addr, 0, sizeof(addr)); |
| 274 | addr.sin_family = AF_INET; |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 275 | if (bind(server.sock, (struct sockaddr *)&addr, sizeof(addr)) == -1) { |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 276 | fprintf(stderr, "bind() failed: %s\n", strerror(errno)); |
| 277 | return 1; |
| 278 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 279 | memset(&addr, 0, sizeof(addr)); |
| 280 | if (inet_pton(AF_INET, argv[1], &addr.sin_addr) != 1) { |
| 281 | fprintf(stderr, "inet_pton() failed: %s\n", strerror(errno)); |
| 282 | return 1; |
| 283 | } |
| 284 | addr.sin_family = AF_INET; |
| 285 | addr.sin_port = htons(strtol(argv[2], 0, 10)); |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 286 | if (connect(server.sock, (struct sockaddr *)&addr, sizeof(addr)) == -1) { |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 287 | fprintf(stderr, "server() failed: %s\n", strerror(errno)); |
| 288 | return 1; |
| 289 | } |
| 290 | |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 291 | /* initialize connection structs */ |
| 292 | server.name = "\e[31mSERVER"; |
| 293 | server.remote = &client; |
| 294 | client.name = "\e[34mCLIENT"; |
| 295 | client.remote = &server; |
| 296 | |
Sean Middleditch | 61f8eb6 | 2009-03-14 04:57:27 -0400 | [diff] [blame^] | 297 | /* initialize telnet boxes |
| 298 | * NOTE: we set the server connect to the CLIENT mode because we |
| 299 | * are acting as a client of the server; likewise, we set the |
| 300 | * client connection to SERVER mode becauser we are acting as a |
| 301 | * server to the client. */ |
| 302 | libtelnet_init(&server.telnet, LIBTELNET_MODE_CLIENT); |
| 303 | libtelnet_init(&client.telnet, LIBTELNET_MODE_SERVER); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 304 | |
| 305 | /* initialize poll descriptors */ |
| 306 | memset(pfd, 0, sizeof(pfd)); |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 307 | pfd[0].fd = server.sock; |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 308 | pfd[0].events = POLLIN; |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 309 | pfd[1].fd = client.sock; |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 310 | pfd[1].events = POLLIN; |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 311 | |
| 312 | /* loop while both connections are open */ |
| 313 | while (poll(pfd, 2, -1) != -1) { |
| 314 | /* read from server */ |
| 315 | if (pfd[0].revents & POLLIN) { |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 316 | if ((rs = recv(server.sock, buffer, sizeof(buffer), 0)) > 0) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 317 | libtelnet_push(&server.telnet, buffer, rs, (void*)&server); |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 318 | } else if (rs == 0) { |
| 319 | printf("%s DISCONNECTED\e[0m\n", server.name); |
| 320 | break; |
| 321 | } else { |
| 322 | fprintf(stderr, "recv(server) failed: %s\n", strerror(errno)); |
| 323 | exit(1); |
| 324 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 325 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 326 | |
| 327 | /* read from client */ |
| 328 | if (pfd[1].revents & POLLIN) { |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 329 | if ((rs = recv(client.sock, buffer, sizeof(buffer), 0)) > 0) { |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 330 | libtelnet_push(&client.telnet, buffer, rs, (void*)&client); |
Sean Middleditch | d99b36d | 2009-03-14 02:13:50 -0400 | [diff] [blame] | 331 | } else if (rs == 0) { |
| 332 | printf("%s DISCONNECTED\e[0m\n", client.name); |
| 333 | break; |
| 334 | } else { |
| 335 | fprintf(stderr, "recv(client) failed: %s\n", strerror(errno)); |
| 336 | exit(1); |
| 337 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 338 | } |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | /* clean up */ |
Sean Middleditch | 5b43a58 | 2009-03-14 02:04:28 -0400 | [diff] [blame] | 342 | libtelnet_free(&server.telnet); |
| 343 | libtelnet_free(&client.telnet); |
| 344 | close(server.sock); |
| 345 | close(client.sock); |
Sean Middleditch | b9ab0b6 | 2009-03-14 00:18:44 -0400 | [diff] [blame] | 346 | close(listen_sock); |
| 347 | |
| 348 | return 0; |
| 349 | } |