lock.c revision 178825
1178825Sdfr/* 2178825Sdfr * Copyright (c) 2005 - 2006 Kungliga Tekniska H�gskolan 3178825Sdfr * (Royal Institute of Technology, Stockholm, Sweden). 4178825Sdfr * All rights reserved. 5178825Sdfr * 6178825Sdfr * Redistribution and use in source and binary forms, with or without 7178825Sdfr * modification, are permitted provided that the following conditions 8178825Sdfr * are met: 9178825Sdfr * 10178825Sdfr * 1. Redistributions of source code must retain the above copyright 11178825Sdfr * notice, this list of conditions and the following disclaimer. 12178825Sdfr * 13178825Sdfr * 2. Redistributions in binary form must reproduce the above copyright 14178825Sdfr * notice, this list of conditions and the following disclaimer in the 15178825Sdfr * documentation and/or other materials provided with the distribution. 16178825Sdfr * 17178825Sdfr * 3. Neither the name of the Institute nor the names of its contributors 18178825Sdfr * may be used to endorse or promote products derived from this software 19178825Sdfr * without specific prior written permission. 20178825Sdfr * 21178825Sdfr * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22178825Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23178825Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24178825Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25178825Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26178825Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27178825Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28178825Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29178825Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30178825Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31178825Sdfr * SUCH DAMAGE. 32178825Sdfr */ 33178825Sdfr 34178825Sdfr#include "hx_locl.h" 35178825SdfrRCSID("$Id: lock.c 22327 2007-12-15 04:49:37Z lha $"); 36178825Sdfr 37178825Sdfr/** 38178825Sdfr * @page page_lock Locking and unlocking certificates and encrypted data. 39178825Sdfr * 40178825Sdfr * See the library functions here: @ref hx509_lock 41178825Sdfr */ 42178825Sdfr 43178825Sdfrstruct hx509_lock_data { 44178825Sdfr struct _hx509_password password; 45178825Sdfr hx509_certs certs; 46178825Sdfr hx509_prompter_fct prompt; 47178825Sdfr void *prompt_data; 48178825Sdfr}; 49178825Sdfr 50178825Sdfrstatic struct hx509_lock_data empty_lock_data = { 51178825Sdfr { 0, NULL } 52178825Sdfr}; 53178825Sdfr 54178825Sdfrhx509_lock _hx509_empty_lock = &empty_lock_data; 55178825Sdfr 56178825Sdfr/* 57178825Sdfr * 58178825Sdfr */ 59178825Sdfr 60178825Sdfrint 61178825Sdfrhx509_lock_init(hx509_context context, hx509_lock *lock) 62178825Sdfr{ 63178825Sdfr hx509_lock l; 64178825Sdfr int ret; 65178825Sdfr 66178825Sdfr *lock = NULL; 67178825Sdfr 68178825Sdfr l = calloc(1, sizeof(*l)); 69178825Sdfr if (l == NULL) 70178825Sdfr return ENOMEM; 71178825Sdfr 72178825Sdfr ret = hx509_certs_init(context, 73178825Sdfr "MEMORY:locks-internal", 74178825Sdfr 0, 75178825Sdfr NULL, 76178825Sdfr &l->certs); 77178825Sdfr if (ret) { 78178825Sdfr free(l); 79178825Sdfr return ret; 80178825Sdfr } 81178825Sdfr 82178825Sdfr *lock = l; 83178825Sdfr 84178825Sdfr return 0; 85178825Sdfr} 86178825Sdfr 87178825Sdfrint 88178825Sdfrhx509_lock_add_password(hx509_lock lock, const char *password) 89178825Sdfr{ 90178825Sdfr void *d; 91178825Sdfr char *s; 92178825Sdfr 93178825Sdfr s = strdup(password); 94178825Sdfr if (s == NULL) 95178825Sdfr return ENOMEM; 96178825Sdfr 97178825Sdfr d = realloc(lock->password.val, 98178825Sdfr (lock->password.len + 1) * sizeof(lock->password.val[0])); 99178825Sdfr if (d == NULL) { 100178825Sdfr free(s); 101178825Sdfr return ENOMEM; 102178825Sdfr } 103178825Sdfr lock->password.val = d; 104178825Sdfr lock->password.val[lock->password.len] = s; 105178825Sdfr lock->password.len++; 106178825Sdfr 107178825Sdfr return 0; 108178825Sdfr} 109178825Sdfr 110178825Sdfrconst struct _hx509_password * 111178825Sdfr_hx509_lock_get_passwords(hx509_lock lock) 112178825Sdfr{ 113178825Sdfr return &lock->password; 114178825Sdfr} 115178825Sdfr 116178825Sdfrhx509_certs 117178825Sdfr_hx509_lock_unlock_certs(hx509_lock lock) 118178825Sdfr{ 119178825Sdfr return lock->certs; 120178825Sdfr} 121178825Sdfr 122178825Sdfrvoid 123178825Sdfrhx509_lock_reset_passwords(hx509_lock lock) 124178825Sdfr{ 125178825Sdfr int i; 126178825Sdfr for (i = 0; i < lock->password.len; i++) 127178825Sdfr free(lock->password.val[i]); 128178825Sdfr free(lock->password.val); 129178825Sdfr lock->password.val = NULL; 130178825Sdfr lock->password.len = 0; 131178825Sdfr} 132178825Sdfr 133178825Sdfrint 134178825Sdfrhx509_lock_add_cert(hx509_context context, hx509_lock lock, hx509_cert cert) 135178825Sdfr{ 136178825Sdfr return hx509_certs_add(context, lock->certs, cert); 137178825Sdfr} 138178825Sdfr 139178825Sdfrint 140178825Sdfrhx509_lock_add_certs(hx509_context context, hx509_lock lock, hx509_certs certs) 141178825Sdfr{ 142178825Sdfr return hx509_certs_merge(context, lock->certs, certs); 143178825Sdfr} 144178825Sdfr 145178825Sdfrvoid 146178825Sdfrhx509_lock_reset_certs(hx509_context context, hx509_lock lock) 147178825Sdfr{ 148178825Sdfr hx509_certs certs = lock->certs; 149178825Sdfr int ret; 150178825Sdfr 151178825Sdfr ret = hx509_certs_init(context, 152178825Sdfr "MEMORY:locks-internal", 153178825Sdfr 0, 154178825Sdfr NULL, 155178825Sdfr &lock->certs); 156178825Sdfr if (ret == 0) 157178825Sdfr hx509_certs_free(&certs); 158178825Sdfr else 159178825Sdfr lock->certs = certs; 160178825Sdfr} 161178825Sdfr 162178825Sdfrint 163178825Sdfr_hx509_lock_find_cert(hx509_lock lock, const hx509_query *q, hx509_cert *c) 164178825Sdfr{ 165178825Sdfr *c = NULL; 166178825Sdfr return 0; 167178825Sdfr} 168178825Sdfr 169178825Sdfrint 170178825Sdfrhx509_lock_set_prompter(hx509_lock lock, hx509_prompter_fct prompt, void *data) 171178825Sdfr{ 172178825Sdfr lock->prompt = prompt; 173178825Sdfr lock->prompt_data = data; 174178825Sdfr return 0; 175178825Sdfr} 176178825Sdfr 177178825Sdfrvoid 178178825Sdfrhx509_lock_reset_promper(hx509_lock lock) 179178825Sdfr{ 180178825Sdfr lock->prompt = NULL; 181178825Sdfr lock->prompt_data = NULL; 182178825Sdfr} 183178825Sdfr 184178825Sdfrstatic int 185178825Sdfrdefault_prompter(void *data, const hx509_prompt *prompter) 186178825Sdfr{ 187178825Sdfr if (hx509_prompt_hidden(prompter->type)) { 188178825Sdfr if(UI_UTIL_read_pw_string(prompter->reply.data, 189178825Sdfr prompter->reply.length, 190178825Sdfr prompter->prompt, 191178825Sdfr 0)) 192178825Sdfr return 1; 193178825Sdfr } else { 194178825Sdfr char *s = prompter->reply.data; 195178825Sdfr 196178825Sdfr fputs (prompter->prompt, stdout); 197178825Sdfr fflush (stdout); 198178825Sdfr if(fgets(prompter->reply.data, 199178825Sdfr prompter->reply.length, 200178825Sdfr stdin) == NULL) 201178825Sdfr return 1; 202178825Sdfr s[strcspn(s, "\n")] = '\0'; 203178825Sdfr } 204178825Sdfr return 0; 205178825Sdfr} 206178825Sdfr 207178825Sdfrint 208178825Sdfrhx509_lock_prompt(hx509_lock lock, hx509_prompt *prompt) 209178825Sdfr{ 210178825Sdfr if (lock->prompt == NULL) 211178825Sdfr return HX509_CRYPTO_NO_PROMPTER; 212178825Sdfr return (*lock->prompt)(lock->prompt_data, prompt); 213178825Sdfr} 214178825Sdfr 215178825Sdfrvoid 216178825Sdfrhx509_lock_free(hx509_lock lock) 217178825Sdfr{ 218178825Sdfr hx509_certs_free(&lock->certs); 219178825Sdfr hx509_lock_reset_passwords(lock); 220178825Sdfr memset(lock, 0, sizeof(*lock)); 221178825Sdfr free(lock); 222178825Sdfr} 223178825Sdfr 224178825Sdfrint 225178825Sdfrhx509_prompt_hidden(hx509_prompt_type type) 226178825Sdfr{ 227178825Sdfr /* default to hidden if unknown */ 228178825Sdfr 229178825Sdfr switch (type) { 230178825Sdfr case HX509_PROMPT_TYPE_QUESTION: 231178825Sdfr case HX509_PROMPT_TYPE_INFO: 232178825Sdfr return 0; 233178825Sdfr default: 234178825Sdfr return 1; 235178825Sdfr } 236178825Sdfr} 237178825Sdfr 238178825Sdfrint 239178825Sdfrhx509_lock_command_string(hx509_lock lock, const char *string) 240178825Sdfr{ 241178825Sdfr if (strncasecmp(string, "PASS:", 5) == 0) { 242178825Sdfr hx509_lock_add_password(lock, string + 5); 243178825Sdfr } else if (strcasecmp(string, "PROMPT") == 0) { 244178825Sdfr hx509_lock_set_prompter(lock, default_prompter, NULL); 245178825Sdfr } else 246178825Sdfr return HX509_UNKNOWN_LOCK_COMMAND; 247178825Sdfr return 0; 248178825Sdfr} 249