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irssi-0.8.14 : irssi-0.8.14 analysis 2 : Cast Alters Value  at network.c:111

Categories: LANG.CAST.VALUE CWE:192
Warning ID: 22016.28363
Similar Warnings: 22016.28364
Procedure: sin_set_port
Trace: view
Modified: Thu Nov 26 11:09:05 2009   show details
 
Priority: None
State: None
Finding: None
Owner: None
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Warning Location
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Parse Error
Other Warning
Two or More Loop Iterations
On Execution Path
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Warning Location Contributes Parse Error
Other Warning Two or More Loop Iterations On Execution Path
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Source  |  Language: C Hide Legend     
ProblemLineSource
   /kat0/fletcher/SATE/2010/irssi-0.8.14/src/irc/dcc/dcc-server.c
   Enter cmd_dcc_server
 314 static void cmd_dcc_server(const char *data, IRC_SERVER_REC *server) 
 315 {
 316         void *free_arg;
 317         GIOChannel *handle;
 318         SERVER_DCC_REC *dcc;
 319         IPADDR own_ip;
 320         char *flags, *port;
 321  
 322         g_return_if_fail(data != NULL);
 323  
 324         if (!cmd_get_params(data, &free_arg, 2, &flags, &port))
 325                 return;
 326  
 327         dcc = dcc_server_find_port(port);
 328         if (dcc != NULL) {
 329                 /* Server is already running, update it */ 
 330                 dcc_server_update_flags(dcc, flags);
 331                 cmd_params_free(free_arg);
 332                 return;
 333         }
 334  
 335         /* start listening */ 
$input_12 >= 65536336         if (!IS_IRC_SERVER(server) || !server->connected) {
 337                 cmd_param_error(CMDERR_NOT_CONNECTED);
 338         }
 339  
atoi$result135 >= 65536340         handle = dcc_listen_port(net_sendbuffer_handle(server->handle),
$input_12 >= 65536341                                  &own_ip, atoi(port));
     Enter cmd_dcc_server / dcc_listen_port
 52   static GIOChannel *dcc_listen_port(GIOChannel *iface, IPADDR *ip, int port) 
 53   {
 54           if (net_getsockname(iface, ip, NULL) == -1)
 55                   return NULL;
 56    
 57           if (IPADDR_IS_V6(ip))
port >= 6553658                   return net_listen(NULL, &port);
       /kat0/fletcher/SATE/2010/irssi-0.8.14/src/core/network.c
       Enter cmd_dcc_server / dcc_listen_port / net_listen
 262     GIOChannel *net_listen(IPADDR *my_ip, int *port) 
 263     {
 264             union sockaddr_union so;
 265             int ret, handle, opt = 1;
 266             socklen_t len;
 267      
 268             g_return_val_if_fail(port != NULL, NULL);
 269      
 270             memset(&so, 0, sizeof(so));
 271             sin_set_ip(&so, my_ip);
*port >= 65536272             sin_set_port(&so, *port);
         Enter cmd_dcc_server / dcc_listen_port / net_listen / sin_set_port
 107       static void sin_set_port(union sockaddr_union *so, int port) 
 108       {
 109       #ifdef HAVE_IPV6 
 110               if (so->sin.sin_family == AF_INET6)
port >= 65536111                       so->sin6.sin6_port = htons((unsigned short)port);     /* Cast Alters Value */  /* Cast Alters Value (ID: 22014.28342) */
         Exit cmd_dcc_server / dcc_listen_port / net_listen / sin_set_port
       Exit cmd_dcc_server / dcc_listen_port / net_listen
     Exit cmd_dcc_server / dcc_listen_port
Preconditions 
so != 0
((char*)port)[32] != 0
((char*)*port)[36] != 0
Postconditions 
_g_boolean_var_' = 1
_g_boolean_var_' = 1
dcc' = 0
iface' = server->handle->handle
ip' = &own_ip.family
my_ip' = 0
opt' = 1
own_ip.family' = 10
port' = $input_12
port' = $input_12
port' = 0
port' = &port
so' = 10
so' = &so
strlen(&so)' = strlen(&in6addr_any.in6_u) + 8
((char*)&so)[8]' = in6addr_any.in6_u



Change Warning 22016.28363 : Cast Alters Value

Because they are very similar, this warning shares annotations with warning 22016.28364.

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