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MassResolve 0.1

  Date Added: September 13, 2010  |  Visits: 551

MassResolve

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MassResolve application performs reverse DNS lookups for network blocks or an input file. The requests can be performed mulit-threaded. Usage: ./res < subnet or filename to resolve > < forks > Code: /* MassResolve (C) 2000 John Anderson (john@ev6.net) This program performs reverse dns lookups for network blocks or an input file and supports multi threading. */ #include < stdio.h> #include < fcntl.h> #include < netdb.h> #include < signal.h> #include < sys/time.h> #include < unistd.h> #include < netinet/in.h> #include < netinet/ip.h> #include < netinet/ip_icmp.h> #include < errno.h> #include < string.h> #include < getopt.h> #include < setjmp.h> char * rlookup (u_long ip) { static char hostname[256]; struct hostent *host; struct sockaddr_in addr; addr.sin_addr.s_addr = ip; host = gethostbyaddr ((char *) &addr.sin_addr, sizeof (addr.sin_addr), AF_INET); if (host == NULL) { printf ("%s does not resolve.n", inet_ntoa (ip)); fflush (stdout); } else { printf ("%s resolves to %sn", inet_ntoa (ip), host->h_name); fflush (stdout); } } int maxforq = 0; int main (int argc, char **argv) { int pid, k, j, frk, i, mforks; char *pt; char mehost[200], sv[3]; FILE *inp; mforks = 64; /* default */ if (argv[1] == NULL) { printf ("Usage: %s n", argv[0]); exit (0); } if (!argv[2] == NULL) { mforks = atoi (argv[2]); } /* printf ("Resolving all hosts in %s with %d threadsn", argv[1], mforks); */ if((inp=fopen(argv[1],"r"))!=NULL) { while(fgets(mehost,sizeof(mehost),inp)) { sscanf(mehost,"%sn",mehost); frk = fork (); if (frk == 0) { fflush (stdout); rlookup (inet_addr (mehost)); exit (0); } else { /* frk = 0 */ maxforq++; if (maxforq > mforks) { wait (NULL); // waiting until the child died maxforq--; } } } fclose(inp); exit(0); } pt = strchr (argv[1], .); if (pt == NULL) { /* ANET */ for (k = 0; k <= 255; k++) { for (j = 0; j <= 255; j++) { for (i = 1; i <= 255; i++) { frk = fork (); if (frk == 0) { snprintf (mehost, sizeof (mehost), "%s.%u.%u.%u", argv[1], k, j, i); fflush (stdout); rlookup (inet_addr (mehost)); exit (0); } else { /* frk = 0 */ maxforq++; if (maxforq > mforks) { wait (NULL); // waiting until the child died maxforq--; } } } } } fprintf (stderr, "%u ", j); } else { pt++; pt = strchr (pt, .); if (pt == NULL) { /* BNET */ for (j = 0; j <= 255; j++) { for (i = 1; i <= 255; i++) { frk = fork (); if (frk == 0) { snprintf (mehost, sizeof (mehost), "%s.%u.%u", argv[1], j, i); fflush (stdout); rlookup (inet_addr (mehost)); exit (0); } else { maxforq++; if (maxforq > mforks) { wait (NULL); // waiting until the child died maxforq--; } } } } fprintf (stderr, "%u ", j); } else { /* CNET */ pt++; pt = strchr (pt, .); if (pt != NULL) /* Single host? */ { rlookup (inet_addr (argv[1])); } else { for (i = 1; i <= 255; i++) { frk = fork (); if (frk == 0) { snprintf (mehost, sizeof (mehost), "%s.%u", argv[1], i); fflush (stdout); rlookup (inet_addr (mehost)); exit (0); } else { maxforq++; if (maxforq > mforks) { wait (NULL); // waiting until the child died maxforq--; } } } fprintf (stderr, "!! %u !!", k); } } } }. John The Ripper MPI Patch

Requirements: No special requirements
Platforms: Linux
Keyword: Argv Char Dns Lookups Include Input Massresolve Network Network Blocks Networking Null Reverse Dns Reverse Dns Lookups System
Users rating: 0/10

License: Freeware Size: 4.1 KB
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