jsorg71
20 years ago
parent
ce08ad0486
commit
1b3ed28352
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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Copyright (C) Jay Sorg 2004
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generic operating system calls
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <netinet/in.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <openssl/rc4.h>
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#include <openssl/md5.h>
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#include <openssl/sha.h>
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#include <openssl/bn.h>
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static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER;
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static int g_term = 0;
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/*****************************************************************************/
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void g_printf(char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vfprintf(stdout, format, ap);
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va_end(ap);
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}
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/*****************************************************************************/
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/* produce a hex dump */
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void g_hexdump(char* p, int len)
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{
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unsigned char* line;
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int i;
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int thisline;
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int offset;
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line = (unsigned char*)p;
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offset = 0;
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while (offset < len)
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{
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printf("%04x ", offset);
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thisline = len - offset;
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if (thisline > 16)
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thisline = 16;
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for (i = 0; i < thisline; i++)
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printf("%02x ", line[i]);
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for (; i < 16; i++)
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printf(" ");
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for (i = 0; i < thisline; i++)
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printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
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printf("\n");
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offset += thisline;
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line += thisline;
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}
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}
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/*****************************************************************************/
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void* g_malloc(int size, int zero)
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{
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void* rv;
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rv = malloc(size);
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if (zero)
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memset(rv, 0, size);
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return rv;
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}
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/*****************************************************************************/
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void g_free(void* ptr)
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{
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if (ptr != 0)
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free(ptr);
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}
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/*****************************************************************************/
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void g_memset(void* ptr, int val, int size)
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{
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memset(ptr, val, size);
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}
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/*****************************************************************************/
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void g_memcpy(void* d_ptr, const void* s_ptr, int size)
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{
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memcpy(d_ptr, s_ptr, size);
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}
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/*****************************************************************************/
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int g_getchar(void)
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{
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return getchar();
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}
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/*****************************************************************************/
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int g_tcp_socket(void)
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{
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return socket(PF_INET, SOCK_STREAM, 0);
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}
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/*****************************************************************************/
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void g_tcp_close(int sck)
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{
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close(sck);
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}
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/*****************************************************************************/
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int g_tcp_set_non_blocking(int sck)
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{
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int i;
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i = fcntl(sck, F_GETFL);
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i = i | O_NONBLOCK;
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fcntl(sck, F_SETFL, i);
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return 0;
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}
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/*****************************************************************************/
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int g_tcp_bind(int sck, char* port)
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{
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struct sockaddr_in s;
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memset(&s, 0, sizeof(struct sockaddr_in));
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s.sin_family = AF_INET;
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s.sin_port = htons(atoi(port));
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s.sin_addr.s_addr = INADDR_ANY;
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return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
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}
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/*****************************************************************************/
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int g_tcp_listen(int sck)
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{
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return listen(sck, 2);
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}
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/*****************************************************************************/
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int g_tcp_accept(int sck)
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{
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struct sockaddr_in s;
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int i;
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i = sizeof(struct sockaddr_in);
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memset(&s, 0, i);
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return accept(sck, (struct sockaddr*)&s, (socklen_t*)&i);
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}
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/*****************************************************************************/
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int g_tcp_recv(int sck, void* ptr, int len, int flags)
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{
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return recv(sck, ptr, len, flags);
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}
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/*****************************************************************************/
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int g_tcp_send(int sck, void* ptr, int len, int flags)
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{
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return send(sck, ptr, len, flags);
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}
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/*****************************************************************************/
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int g_tcp_last_error_would_block(int sck)
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{
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return errno == EWOULDBLOCK;
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}
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/*****************************************************************************/
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int g_tcp_select(int sck)
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{
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fd_set rfds;
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FD_ZERO(&rfds);
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FD_SET(sck, &rfds);
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return select(sck + 1, &rfds, 0, 0, 0);
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}
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/*****************************************************************************/
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int g_is_term(void)
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{
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int rv;
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pthread_mutex_lock(&g_term_mutex);
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rv = g_term;
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pthread_mutex_unlock(&g_term_mutex);
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return rv;
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}
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/*****************************************************************************/
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void g_set_term(int in_val)
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{
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pthread_mutex_lock(&g_term_mutex);
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g_term = in_val;
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pthread_mutex_unlock(&g_term_mutex);
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}
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/*****************************************************************************/
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void g_sleep(int msecs)
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{
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usleep(msecs * 1000);
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}
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/*****************************************************************************/
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int g_thread_create(void* (*start_routine)(void*), void* arg)
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{
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pthread_t thread;
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return pthread_create(&thread, 0, start_routine, arg);
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}
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/* rc4 stuff */
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/*****************************************************************************/
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void* g_rc4_info_create(void)
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{
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return g_malloc(sizeof(RC4_KEY), 1);;
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}
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/*****************************************************************************/
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void g_rc4_info_delete(void* rc4_info)
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{
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g_free(rc4_info);
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}
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/*****************************************************************************/
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void g_rc4_set_key(void* rc4_info, char* key, int len)
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{
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RC4_set_key((RC4_KEY*)rc4_info, len, (unsigned char*)key);
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}
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/*****************************************************************************/
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void g_rc4_crypt(void* rc4_info, char* data, int len)
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{
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RC4((RC4_KEY*)rc4_info, len, (unsigned char*)data, (unsigned char*)data);
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}
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/* sha1 stuff */
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/*****************************************************************************/
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void* g_sha1_info_create(void)
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{
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return g_malloc(sizeof(SHA_CTX), 1);
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}
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/*****************************************************************************/
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void g_sha1_info_delete(void* sha1_info)
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{
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g_free(sha1_info);
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}
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/*****************************************************************************/
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void g_sha1_clear(void* sha1_info)
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{
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SHA1_Init((SHA_CTX*)sha1_info);
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}
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/*****************************************************************************/
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void g_sha1_transform(void* sha1_info, char* data, int len)
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{
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SHA1_Update((SHA_CTX*)sha1_info, data, len);
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}
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/*****************************************************************************/
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void g_sha1_complete(void* sha1_info, char* data)
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{
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SHA1_Final((unsigned char*)data, (SHA_CTX*)sha1_info);
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}
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/* md5 stuff */
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/*****************************************************************************/
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void* g_md5_info_create(void)
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{
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return g_malloc(sizeof(MD5_CTX), 1);
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}
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/*****************************************************************************/
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void g_md5_info_delete(void* md5_info)
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{
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g_free(md5_info);
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}
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/*****************************************************************************/
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void g_md5_clear(void* md5_info)
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{
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MD5_Init((MD5_CTX*)md5_info);
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}
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/*****************************************************************************/
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void g_md5_transform(void* md5_info, char* data, int len)
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{
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MD5_Update((MD5_CTX*)md5_info, data, len);
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}
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/*****************************************************************************/
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void g_md5_complete(void* md5_info, char* data)
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{
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MD5_Final((unsigned char*)data, (MD5_CTX*)md5_info);
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}
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/*****************************************************************************/
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int g_mod_exp(char* out, char* in, char* mod, char* exp)
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{
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BN_CTX* ctx;
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BIGNUM lmod;
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BIGNUM lexp;
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BIGNUM lin;
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BIGNUM lout;
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int rv;
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ctx = BN_CTX_new();
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BN_init(&lmod);
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BN_init(&lexp);
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BN_init(&lin);
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BN_init(&lout);
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BN_bin2bn((unsigned char*)mod, 64, &lmod);
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BN_bin2bn((unsigned char*)exp, 64, &lexp);
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BN_bin2bn((unsigned char*)in, 64, &lin);
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BN_mod_exp(&lout, &lin, &lexp, &lmod, ctx);
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rv = BN_bn2bin(&lout, (unsigned char*)out);
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BN_free(&lin);
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BN_free(&lout);
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BN_free(&lexp);
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BN_free(&lmod);
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BN_CTX_free(ctx);
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return rv;
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}
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/*****************************************************************************/
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void g_random(char* data, int len)
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{
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int fd;
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memset(data, 0x44, len);
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fd = open("/dev/urandom", O_RDONLY);
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if (fd == -1)
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fd = open("/dev/random", O_RDONLY);
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if (fd != -1)
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{
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read(fd, data, len);
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close(fd);
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}
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}
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