| SeniorSE |
09-12-2005 09:57 PM |
How to compile a C program in Fedora Core 4
Hi. I am trying to compile a C program. I have a program that has already been written and am trying to make changes to it. My problem is that I have no idea how to compile a C program on Linux. I have tried running:
Code:
g++ -I. -o mdhkarma mdhkarma.c
I got the following output:
Code:
mdhkarma.c: In function ‘void on_probe_req(const unsigned char*, const at_frame_info_t*)’:
mdhkarma.c:62: error: invalid conversion from ‘void*’ to ‘char*’
mdhkarma.c:107: error: invalid conversion from ‘void*’ to ‘sta*’
mdhkarma.c:108: error: invalid conversion from ‘void*’ to ‘sta_t*’
mdhkarma.c:115: error: ‘UNKNOWN’ was not declared in this scope
mdhkarma.c:157: error: invalid conversion from ‘void*’ to ‘ssid*’
Here is a copy of the C program that I am trying to compile:
mdhkarma.c
Code:
/*
* KARMA Attacks Radioed Machines Automatically
*
* Dino Dai Zovi <ddz@theta44.org>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <sys/types.h>
#include "airtap.h"
#include "karma.h"
struct sta* sta_list = NULL;
static void dump_sta_info(sta_t* sta)
{
struct ssid* s;
fprintf(stderr, "STA 0x%.8x %d", sta->staid, sta->state);
for (s = sta->probed_networks; s; s = s->next)
fprintf(stderr, " %s(%d)", s->ssid, s->seq);
fprintf(stderr, "\n");
}
void on_probe_req(const unsigned char* f, const at_frame_info_t* frame_info)
{
struct at_wifi_frame* frame =
(struct at_wifi_frame*)f;
const char* body = (char*)f + sizeof(struct at_wifi_frame);
char* ssid;
unsigned int staid;
u_int16_t seq;
struct ssid** s;
struct sta** sta_iter;
struct sta* sta_entry = NULL;
sta_t* sta = NULL;
int do_update = 0;
size_t ssid_len;
/*
* Probe request is:
* SSID, Supported rates
*/
assert(body[0] == 0);
ssid_len = (size_t)body[1];
if (ssid_len == 32) { /* Garbage probe requests */
ssid = strdup("<random>");
}
else if (ssid_len > 0) {
ssid = malloc(ssid_len + 1);
strncpy(ssid, &body[2], body[1]);
ssid[ssid_len] = '\0';
}
else {
ssid = strdup("<broadcast>");
}
/********* Begin New Code by MDH *********************/
int system (const char *command);
int ifconfig;
ifconfig = system("ifconfig wlan0 down");
/*
* addr2 is STA address
*/
memcpy(&seq, &frame->sequence_control, sizeof(seq));
seq = (seq & 0xfff0) >> 4;
staid =
(frame->address2[2] << 24) |
(frame->address2[3] << 16) |
(frame->address2[4] << 8) |
(frame->address2[5]);
/*
* Find station entry in list
*/
for (sta_iter = &sta_list; *sta_iter; sta_iter = &((*sta_iter)->next)) {
if (((*sta_iter)->sta)->staid == staid) {
sta_entry = *sta_iter;
*sta_iter = (*sta_iter)->next;
break;
}
}
/*
* Allocate a new one if it wasn't found
*/
if (!sta_entry) {
sta_entry = malloc(sizeof(struct sta));
sta_entry->sta = malloc(sizeof(sta_t));
sta_entry->sta->staid = staid;
memcpy(&(sta_entry->sta->mac), &(frame->address2), 6);
sta_entry->sta->last_seq = sta_entry->sta->signal = 0;
sta_entry->sta->state = UNKNOWN;
sta_entry->sta->probed_networks = NULL;
do_update = 1;
}
/*
* Update station information
*/
sta = sta_entry->sta;
sta->last_seq = seq;
if (frame_info) {
sta->signal = frame_info->signal;
}
/*
* Find SSID in this station's probed networks list and add it if
* it wasn't found.
*/
for (s = &(sta->probed_networks); *s; s = &(*s)->next) {
fprintf(stdout, "SSID: %s\n", (*s)->ssid);
fflush(stdout);
if (strcmp((*s)->ssid, ssid) == 0) {
/*
* Move to front
*/
struct ssid* s2 = *s;
(*s) = (*s)->next;
s2->next = sta->probed_networks;
sta->probed_networks = s2;
s = &(sta->probed_networks);
break;
}
}
if (*s == NULL) {
struct ssid* s2;
if ((s2 = malloc(sizeof(struct ssid))) == NULL) {
perror("on_probe_req: malloc");
}
s2->next = sta->probed_networks;
s2->ssid = strdup(ssid);
s2->seq = seq;
sta->probed_networks = s2;
s = &(sta->probed_networks);
do_update = 1;
}
else {
(*s)->seq = seq;
}
/*
* Put station entry back in list
*/
sta_entry->next = sta_list;
sta_list = sta_entry;
free(ssid);
/* dump_sta_info(sta); */
/*
* When there is no network around and a room full of laptops,
* there is a Probe Request storm and we want to be conservative
* about when we do screen updates.
*/
/* if (do_update) */
}
int main(int argc, char* argv[])
{
airtap_open(argv[1]);
/*
* Install hooks
*/
airtap_add_hook(AT_TYPE_MGMT,
AT_MGMT_SUBTYPE_PROBE_REQ,
AT_DIR_NODS,
on_probe_req);
/*
* Deliver justice.
*/
return airtap_loop();
}
There are a couple of other .c files and .o files as well. I don't know what to do with them. I can see where they are called in the above program, but I don't know what to do to make it all compile.
Any help you can give would be greatly appreciated. As you can tell, I am a newbie to Linux. Thanks.
Mark |
