diff options
Diffstat (limited to 'lcrypt/lcrypt.c')
| -rw-r--r-- | lcrypt/lcrypt.c | 359 |
1 files changed, 12 insertions, 347 deletions
diff --git a/lcrypt/lcrypt.c b/lcrypt/lcrypt.c index ed514dd..620c88b 100644 --- a/lcrypt/lcrypt.c +++ b/lcrypt/lcrypt.c @@ -11,16 +11,7 @@ #include "lua.h" #include "lauxlib.h" #include "lualib.h" -#include <tomcrypt.h> -#include <termios.h> - -#ifdef USE_NCIPHER - #include "ncipher.h" - extern NFastApp_Connection nfast_conn; - extern NFast_AppHandle nfast_app; -#else - #include <pty.h> -#endif +#include "tomcrypt.h" #define likely(x) __builtin_expect((x),1) #define unlikely(x) __builtin_expect((x),0) @@ -217,12 +208,6 @@ static int lcrypt_xor(lua_State *L) return 1; } -static int lcrypt_sleep(lua_State *L) -{ - usleep(1000000.0 * luaL_checknumber(L, 1)); - return(0); -} - static int lcrypt_time(lua_State *L) { double ret; @@ -236,275 +221,25 @@ static int lcrypt_time(lua_State *L) static int lcrypt_random(lua_State *L) { int len = luaL_checkint(L, 1); - #ifdef USE_NCIPHER - M_Command command; - M_Reply reply; - M_Status rc; - memset(&command, 0, sizeof(command)); - memset(&reply, 0, sizeof(reply)); - command.cmd = Cmd_GenerateRandom; - command.args.generaterandom.lenbytes = len; - if(unlikely((rc = NFastApp_Transact(nfast_conn, NULL, &command, &reply, NULL)) != Status_OK)) - { - lua_pushstring(L, NF_Lookup(rc, NF_Status_enumtable)); - (void)lua_error(L); - } - if(unlikely(reply.status != Status_OK)) - { - lua_pushstring(L, NF_Lookup(reply.status, NF_Status_enumtable)); - (void)lua_error(L); - } - if(unlikely(len != reply.reply.generaterandom.data.len)) - { - lua_pushstring(L, "Wrong length returned"); - (void)lua_error(L); - } - lua_pushlstring(L, reply.reply.generaterandom.data.ptr, len); - NFastApp_Free_Reply(nfast_app, NULL, NULL, &reply); - #else - FILE *fp; - char *buffer = lcrypt_malloc(L, len); - if(unlikely((fp = fopen("/dev/urandom", "rb")) == NULL)) - { - lua_pushstring(L, "Unable to open /dev/urandom."); - (void)lua_error(L); - } - if(unlikely(fread(buffer, len, 1, fp) != 1)) - { - fclose(fp); - lua_pushstring(L, "Unable to read /dev/urandom."); - (void)lua_error(L); - } - fclose(fp); - lua_pushlstring(L, buffer, len); - free(buffer); - #endif - return 1; -} - -static FILE *lgetfile(lua_State *L, int index) -{ - FILE **fp = lua_touserdata(L, index); - if(unlikely(fp == NULL)) return NULL; - if(lua_getmetatable(L, index)) + FILE *fp; + char *buffer = lcrypt_malloc(L, len); + if(unlikely((fp = fopen("/dev/urandom", "rb")) == NULL)) { - lua_getfield(L, LUA_REGISTRYINDEX, LUA_FILEHANDLE); - if(lua_rawequal(L, -1, -2)) - { - lua_pop(L, 2); - return *fp; - } - lua_pop(L, 2); - } - return NULL; -} - -static int lcrypt_tcsetattr(lua_State* L) -{ - struct termios old, new; - FILE *fp = lgetfile(L, 1); - if(unlikely(fp == NULL)) return 0; - if(unlikely(tcgetattr(fileno(fp), &old) != 0)) return 0; - new = old; - new.c_iflag = luaL_optint(L, 2, old.c_iflag); - new.c_oflag = luaL_optint(L, 3, old.c_oflag); - new.c_cflag = luaL_optint(L, 4, old.c_cflag); - new.c_lflag = luaL_optint(L, 5, old.c_lflag); - if(unlikely(tcsetattr(fileno(fp), TCSAFLUSH, &new) != 0)) return 0; - lua_pushinteger(L, new.c_iflag); - lua_pushinteger(L, new.c_oflag); - lua_pushinteger(L, new.c_cflag); - lua_pushinteger(L, new.c_lflag); - return 4; -} - -static int lcrypt_flag_add(lua_State *L) -{ - uint32_t a = luaL_checkint(L, 1); - uint32_t b = luaL_checkint(L, 2); - lua_pushinteger(L, a | b); - return 1; -} - -static int lcrypt_flag_remove(lua_State *L) -{ - uint32_t a = luaL_checkint(L, 1); - uint32_t b = luaL_checkint(L, 2); - lua_pushinteger(L, a & ~b); - return 1; -} - -#ifndef USE_NCIPHER - -typedef struct -{ - int fd; - int pid; - char *command; -} lcrypt_spawn_t; - -static int lcrypt_spawn(lua_State *L) -{ - int fd, pid, argc; - #define MAX_ARGUMENT 128 - const char *command = luaL_checkstring(L, 1); - char *cmd = strdup(command); - char *pos = cmd, *p; - char *argv[MAX_ARGUMENT]; - for(argc = 0; argc < MAX_ARGUMENT-1; argc++) - { - // eat whitespace - while(*pos == ' ' || *pos == '\t' || *pos == '\n' || *pos == '\r') - { - if(*pos == '\\') for(p = pos; *p != '\0'; p++) *p = *(p + 1); - pos++; - } - // start of argument found - argv[argc] = pos; - if(*argv[argc] == '"' || *argv[argc] == '\'') // quoted argument - { - pos++; - while(*pos != *argv[argc] && *pos != '\0') - { - if(*pos == '\\') for(p = pos; *p != '\0'; p++) *p = *(p + 1); - pos++; - } - argv[argc]++; - } - else // non-quoted argument - { - while(*pos != ' ' && *pos != '\t' && *pos != '\n' && *pos != '\r' && *pos != '\0') - { - if(*pos == '\\') for(p = pos; *p != '\0'; p++) *p = *(p + 1); - pos++; - } - } - if(*pos == '\0') break; - *pos++ = '\0'; - } - argv[++argc] = NULL; - - errno = 0; - pid = forkpty(&fd, NULL, NULL, NULL); - if(pid == 0) // child - { - execvp(argv[0], argv); - // if we get here, it's an error! - perror("'unable to spawn process"); - return 0; - } - else if(errno != 0) - { - lua_pushnil(L); - lua_pushstring(L, strerror(errno)); - return 2; - } - else - { - lcrypt_spawn_t *lsp = lua_newuserdata(L, sizeof(lcrypt_spawn_t)); - lsp->fd = fd; - lsp->pid = pid; - lsp->command = cmd; - luaL_getmetatable(L, "LSPAWN"); - (void)lua_setmetatable(L, -2); - return 1; - } -} - -static int lcrypt_spawn_close(lua_State *L) -{ - lcrypt_spawn_t *lsp = (lcrypt_spawn_t*)luaL_checkudata(L, 1, "LSPAWN"); - if(lsp->pid > 0) - { - (void)kill(lsp->pid, SIGQUIT); - lsp->pid = -1; - } - if(lsp->fd >= 0) - { - (void)close(lsp->fd); - lsp->fd = -1; - } - if(lsp->command != NULL) - { - free(lsp->command); - lsp->command = NULL; - } - return 0; -} - -static int lcrypt_spawn_read(lua_State *L) -{ - lcrypt_spawn_t *lsp = (lcrypt_spawn_t*)luaL_checkudata(L, 1, "LSPAWN"); - int count = luaL_optint(L, 2, 4096); - char *buffer; - if(lsp->fd < 0) - { - lua_pushstring(L, "Spawn closed"); - lua_error(L); - return 0; - } - if((buffer = malloc(count)) == NULL) - { - lua_pushnil(L); - lua_pushstring(L, "Unable to allocate memory"); - return 2; + lua_pushstring(L, "Unable to open /dev/urandom."); + (void)lua_error(L); } - count = read(lsp->fd, buffer, count); - if(errno != 0) + if(unlikely(fread(buffer, len, 1, fp) != 1)) { - free(buffer); - lua_pushnil(L); - lua_pushstring(L, strerror(errno)); - return 2; + fclose(fp); + lua_pushstring(L, "Unable to read /dev/urandom."); + (void)lua_error(L); } - lua_pushlstring(L, buffer, count); + fclose(fp); + lua_pushlstring(L, buffer, len); free(buffer); return 1; } -static int lcrypt_spawn_write(lua_State *L) -{ - lcrypt_spawn_t *lsp = (lcrypt_spawn_t*)luaL_checkudata(L, 1, "LSPAWN"); - size_t in_length = 0; - const char* in = luaL_checklstring(L, 2, &in_length); - if(lsp->fd < 0) - { - lua_pushstring(L, "closed"); - lua_error(L); - return 0; - } - write(lsp->fd, in, in_length); - if(errno != 0) - { - lua_pushstring(L, strerror(errno)); - return 1; - } - return 0; -} - -static int lcrypt_spawn_index(lua_State *L) -{ - (void)luaL_checkudata(L, 1, "LSPAWN"); - const char *index = luaL_checkstring(L, 2); - if(strcmp(index, "read") == 0) - lua_pushcfunction(L, lcrypt_spawn_read); - else if(strcmp(index, "write") == 0) - lua_pushcfunction(L, lcrypt_spawn_write); - else if(strcmp(index, "close") == 0) - lua_pushcfunction(L, lcrypt_spawn_close); - else - return 0; - return 1; -} - -static const luaL_Reg lcrypt_spawn_flib[] = -{ - {"__gc", lcrypt_spawn_close}, - {NULL, NULL} -}; - -#endif - static const luaL_Reg lcryptlib[] = { {"tohex", lcrypt_tohex}, @@ -514,31 +249,15 @@ static const luaL_Reg lcryptlib[] = {"base64_encode", lcrypt_base64_encode}, {"base64_decode", lcrypt_base64_decode}, {"xor", lcrypt_xor}, - {"sleep", lcrypt_sleep}, {"time", lcrypt_time}, {"random", lcrypt_random}, - {"tcsetattr", lcrypt_tcsetattr}, - {"flag_add", lcrypt_flag_add}, - {"flag_remove", lcrypt_flag_remove}, - #ifndef USE_NCIPHER - {"spawn", lcrypt_spawn}, - #endif {NULL, NULL} }; -int luaopen_lcrypt(lua_State *L); int luaopen_lcrypt(lua_State *L) { luaL_register(L, "lcrypt", lcryptlib); - #ifndef USE_NCIPHER - (void)luaL_newmetatable(L, "LSPAWN"); - lua_pushliteral(L, "__index"); - lua_pushcfunction(L, lcrypt_spawn_index); - lua_rawset(L, -3); - luaL_register(L, NULL, lcrypt_spawn_flib); - #endif - lua_getglobal(L, "lcrypt"); lcrypt_start_ciphers(L); @@ -546,60 +265,6 @@ int luaopen_lcrypt(lua_State *L) lcrypt_start_math(L); lcrypt_start_bits(L); - lua_pushstring(L, "iflag"); - lua_newtable(L); - ADD_CONSTANT(L, IGNBRK); ADD_CONSTANT(L, BRKINT); ADD_CONSTANT(L, IGNPAR); ADD_CONSTANT(L, PARMRK); - ADD_CONSTANT(L, INPCK); ADD_CONSTANT(L, ISTRIP); ADD_CONSTANT(L, INLCR); ADD_CONSTANT(L, IGNCR); - ADD_CONSTANT(L, ICRNL); ADD_CONSTANT(L, IXON); ADD_CONSTANT(L, IXANY); ADD_CONSTANT(L, IXOFF); - lua_settable(L, -3); - - lua_pushstring(L, "oflag"); - lua_newtable(L); - #ifdef OLCUC - ADD_CONSTANT(L, OLCUC); - #endif - #ifdef OFILL - ADD_CONSTANT(L, OFILL); - #endif - #ifdef OFDEL - ADD_CONSTANT(L, OFDEL); - #endif - #ifdef NLDLY - ADD_CONSTANT(L, NLDLY); - #endif - #ifdef CRDLY - ADD_CONSTANT(L, CRDLY); - #endif - #ifdef TABDLY - ADD_CONSTANT(L, TABDLY); - #endif - #ifdef BSDLY - ADD_CONSTANT(L, BSDLY); - #endif - #ifdef VTDLY - ADD_CONSTANT(L, VTDLY); - #endif - #ifdef FFDLY - ADD_CONSTANT(L, FFDLY); - #endif - ADD_CONSTANT(L, OPOST); ADD_CONSTANT(L, ONLCR); ADD_CONSTANT(L, OCRNL); ADD_CONSTANT(L, ONOCR); - ADD_CONSTANT(L, ONLRET); - lua_settable(L, -3); - - lua_pushstring(L, "cflag"); - lua_newtable(L); - ADD_CONSTANT(L, CS5); ADD_CONSTANT(L, CS6); ADD_CONSTANT(L, CS7); ADD_CONSTANT(L, CS8); - ADD_CONSTANT(L, CSTOPB); ADD_CONSTANT(L, CREAD); ADD_CONSTANT(L, PARENB); ADD_CONSTANT(L, PARODD); - ADD_CONSTANT(L, HUPCL); ADD_CONSTANT(L, CLOCAL); - lua_settable(L, -3); - - lua_pushstring(L, "lflag"); - lua_newtable(L); - ADD_CONSTANT(L, ISIG); ADD_CONSTANT(L, ICANON); ADD_CONSTANT(L, ECHO); ADD_CONSTANT(L, ECHOE); - ADD_CONSTANT(L, ECHOK); ADD_CONSTANT(L, ECHONL); ADD_CONSTANT(L, NOFLSH); ADD_CONSTANT(L, TOSTOP); - ADD_CONSTANT(L, IEXTEN); - lua_settable(L, -3); - lua_pop(L, 1); return 1; } |