From 1b3ed283521921d012ffb372ea9569121e5bb8c4 Mon Sep 17 00:00:00 2001 From: jsorg71 Date: Tue, 3 Aug 2004 03:40:37 +0000 Subject: [PATCH] add os_calls.c --- xrdp/os_calls.c | 361 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 xrdp/os_calls.c diff --git a/xrdp/os_calls.c b/xrdp/os_calls.c new file mode 100644 index 00000000..afa1e8b7 --- /dev/null +++ b/xrdp/os_calls.c @@ -0,0 +1,361 @@ +/* + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Copyright (C) Jay Sorg 2004 + + generic operating system calls + +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER; +static int g_term = 0; + +/*****************************************************************************/ +void g_printf(char *format, ...) +{ + va_list ap; + + va_start(ap, format); + vfprintf(stdout, format, ap); + va_end(ap); +} + +/*****************************************************************************/ +/* produce a hex dump */ +void g_hexdump(char* p, int len) +{ + unsigned char* line; + int i; + int thisline; + int offset; + + line = (unsigned char*)p; + offset = 0; + while (offset < len) + { + printf("%04x ", offset); + thisline = len - offset; + if (thisline > 16) + thisline = 16; + for (i = 0; i < thisline; i++) + printf("%02x ", line[i]); + for (; i < 16; i++) + printf(" "); + for (i = 0; i < thisline; i++) + printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); + printf("\n"); + offset += thisline; + line += thisline; + } +} + +/*****************************************************************************/ +void* g_malloc(int size, int zero) +{ + void* rv; + + rv = malloc(size); + if (zero) + memset(rv, 0, size); + return rv; +} + +/*****************************************************************************/ +void g_free(void* ptr) +{ + if (ptr != 0) + free(ptr); +} + +/*****************************************************************************/ +void g_memset(void* ptr, int val, int size) +{ + memset(ptr, val, size); +} + +/*****************************************************************************/ +void g_memcpy(void* d_ptr, const void* s_ptr, int size) +{ + memcpy(d_ptr, s_ptr, size); +} + +/*****************************************************************************/ +int g_getchar(void) +{ + return getchar(); +} + +/*****************************************************************************/ +int g_tcp_socket(void) +{ + return socket(PF_INET, SOCK_STREAM, 0); +} + +/*****************************************************************************/ +void g_tcp_close(int sck) +{ + close(sck); +} + +/*****************************************************************************/ +int g_tcp_set_non_blocking(int sck) +{ + int i; + + i = fcntl(sck, F_GETFL); + i = i | O_NONBLOCK; + fcntl(sck, F_SETFL, i); + return 0; +} + +/*****************************************************************************/ +int g_tcp_bind(int sck, char* port) +{ + struct sockaddr_in s; + + memset(&s, 0, sizeof(struct sockaddr_in)); + s.sin_family = AF_INET; + s.sin_port = htons(atoi(port)); + s.sin_addr.s_addr = INADDR_ANY; + return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in)); +} + +/*****************************************************************************/ +int g_tcp_listen(int sck) +{ + return listen(sck, 2); +} + +/*****************************************************************************/ +int g_tcp_accept(int sck) +{ + struct sockaddr_in s; + int i; + + i = sizeof(struct sockaddr_in); + memset(&s, 0, i); + return accept(sck, (struct sockaddr*)&s, (socklen_t*)&i); +} + +/*****************************************************************************/ +int g_tcp_recv(int sck, void* ptr, int len, int flags) +{ + return recv(sck, ptr, len, flags); +} + +/*****************************************************************************/ +int g_tcp_send(int sck, void* ptr, int len, int flags) +{ + return send(sck, ptr, len, flags); +} + +/*****************************************************************************/ +int g_tcp_last_error_would_block(int sck) +{ + return errno == EWOULDBLOCK; +} + +/*****************************************************************************/ +int g_tcp_select(int sck) +{ + fd_set rfds; + + FD_ZERO(&rfds); + FD_SET(sck, &rfds); + return select(sck + 1, &rfds, 0, 0, 0); +} + +/*****************************************************************************/ +int g_is_term(void) +{ + int rv; + + pthread_mutex_lock(&g_term_mutex); + rv = g_term; + pthread_mutex_unlock(&g_term_mutex); + return rv; +} + +/*****************************************************************************/ +void g_set_term(int in_val) +{ + pthread_mutex_lock(&g_term_mutex); + g_term = in_val; + pthread_mutex_unlock(&g_term_mutex); +} + +/*****************************************************************************/ +void g_sleep(int msecs) +{ + usleep(msecs * 1000); +} + +/*****************************************************************************/ +int g_thread_create(void* (*start_routine)(void*), void* arg) +{ + pthread_t thread; + + return pthread_create(&thread, 0, start_routine, arg); +} + +/* rc4 stuff */ + +/*****************************************************************************/ +void* g_rc4_info_create(void) +{ + return g_malloc(sizeof(RC4_KEY), 1);; +} + +/*****************************************************************************/ +void g_rc4_info_delete(void* rc4_info) +{ + g_free(rc4_info); +} + +/*****************************************************************************/ +void g_rc4_set_key(void* rc4_info, char* key, int len) +{ + RC4_set_key((RC4_KEY*)rc4_info, len, (unsigned char*)key); +} + +/*****************************************************************************/ +void g_rc4_crypt(void* rc4_info, char* data, int len) +{ + RC4((RC4_KEY*)rc4_info, len, (unsigned char*)data, (unsigned char*)data); +} + +/* sha1 stuff */ + +/*****************************************************************************/ +void* g_sha1_info_create(void) +{ + return g_malloc(sizeof(SHA_CTX), 1); +} + +/*****************************************************************************/ +void g_sha1_info_delete(void* sha1_info) +{ + g_free(sha1_info); +} + +/*****************************************************************************/ +void g_sha1_clear(void* sha1_info) +{ + SHA1_Init((SHA_CTX*)sha1_info); +} + +/*****************************************************************************/ +void g_sha1_transform(void* sha1_info, char* data, int len) +{ + SHA1_Update((SHA_CTX*)sha1_info, data, len); +} + +/*****************************************************************************/ +void g_sha1_complete(void* sha1_info, char* data) +{ + SHA1_Final((unsigned char*)data, (SHA_CTX*)sha1_info); +} + +/* md5 stuff */ + +/*****************************************************************************/ +void* g_md5_info_create(void) +{ + return g_malloc(sizeof(MD5_CTX), 1); +} + +/*****************************************************************************/ +void g_md5_info_delete(void* md5_info) +{ + g_free(md5_info); +} + +/*****************************************************************************/ +void g_md5_clear(void* md5_info) +{ + MD5_Init((MD5_CTX*)md5_info); +} + +/*****************************************************************************/ +void g_md5_transform(void* md5_info, char* data, int len) +{ + MD5_Update((MD5_CTX*)md5_info, data, len); +} + +/*****************************************************************************/ +void g_md5_complete(void* md5_info, char* data) +{ + MD5_Final((unsigned char*)data, (MD5_CTX*)md5_info); +} + +/*****************************************************************************/ +int g_mod_exp(char* out, char* in, char* mod, char* exp) +{ + BN_CTX* ctx; + BIGNUM lmod; + BIGNUM lexp; + BIGNUM lin; + BIGNUM lout; + int rv; + + ctx = BN_CTX_new(); + BN_init(&lmod); + BN_init(&lexp); + BN_init(&lin); + BN_init(&lout); + BN_bin2bn((unsigned char*)mod, 64, &lmod); + BN_bin2bn((unsigned char*)exp, 64, &lexp); + BN_bin2bn((unsigned char*)in, 64, &lin); + BN_mod_exp(&lout, &lin, &lexp, &lmod, ctx); + rv = BN_bn2bin(&lout, (unsigned char*)out); + BN_free(&lin); + BN_free(&lout); + BN_free(&lexp); + BN_free(&lmod); + BN_CTX_free(ctx); + return rv; +} + +/*****************************************************************************/ +void g_random(char* data, int len) +{ + int fd; + + memset(data, 0x44, len); + fd = open("/dev/urandom", O_RDONLY); + if (fd == -1) + fd = open("/dev/random", O_RDONLY); + if (fd != -1) + { + read(fd, data, len); + close(fd); + } +}