2 * Copyright 2007 Juan Lang
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include <sys/types.h>
22 #ifdef HAVE_SYS_STAT_H
33 #define WIN32_NO_STATUS
39 #include "wine/debug.h"
40 #include "crypt32_private.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
44 #define INITIAL_CERT_BUFFER 1024
53 static inline void reset_buffer(struct DynamicBuffer *buffer)
56 if (buffer->data) buffer->data[0] = 0;
59 static BOOL add_line_to_buffer(struct DynamicBuffer *buffer, LPCSTR line)
63 if (buffer->used + strlen(line) + 1 > buffer->allocated)
65 if (!buffer->allocated)
67 buffer->data = CryptMemAlloc(INITIAL_CERT_BUFFER);
71 buffer->allocated = INITIAL_CERT_BUFFER;
76 DWORD new_size = max(buffer->allocated * 2,
77 buffer->used + strlen(line) + 1);
79 buffer->data = CryptMemRealloc(buffer->data, new_size);
81 buffer->allocated = new_size;
86 strcpy((char *)buffer->data + strlen((char *)buffer->data), line);
87 /* Not strlen + 1, otherwise we'd count the NULL for every line's
88 * addition (but we overwrite the previous NULL character.) Not an
89 * overrun, we allocate strlen + 1 bytes above.
91 buffer->used += strlen(line);
99 /* Reads any base64-encoded certificates present in fp and adds them to store.
100 * Returns TRUE if any certificates were successfully imported.
102 static BOOL import_base64_certs_from_fp(FILE *fp, HCERTSTORE store)
105 BOOL in_cert = FALSE;
106 struct DynamicBuffer saved_cert = { 0, 0, NULL };
110 while (fgets(line, sizeof(line), fp))
112 static const char header[] = "-----BEGIN CERTIFICATE-----";
113 static const char trailer[] = "-----END CERTIFICATE-----";
115 if (!strncmp(line, header, strlen(header)))
117 TRACE("begin new certificate\n");
119 reset_buffer(&saved_cert);
121 else if (!strncmp(line, trailer, strlen(trailer)))
125 TRACE("end of certificate, adding cert\n");
127 if (CryptStringToBinaryA((char *)saved_cert.data, saved_cert.used,
128 CRYPT_STRING_BASE64, NULL, &size, NULL, NULL))
130 LPBYTE buf = CryptMemAlloc(size);
134 CryptStringToBinaryA((char *)saved_cert.data,
135 saved_cert.used, CRYPT_STRING_BASE64, buf, &size, NULL,
137 if (CertAddEncodedCertificateToStore(store,
138 X509_ASN_ENCODING, buf, size, CERT_STORE_ADD_NEW, NULL))
145 add_line_to_buffer(&saved_cert, line);
147 CryptMemFree(saved_cert.data);
148 TRACE("Read %d certs\n", num_certs);
149 return num_certs > 0;
152 static const char *trust_status_to_str(DWORD status)
154 static char buf[1024];
157 if (status & CERT_TRUST_IS_NOT_TIME_VALID)
158 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\texpired");
159 if (status & CERT_TRUST_IS_NOT_TIME_NESTED)
160 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tbad time nesting");
161 if (status & CERT_TRUST_IS_REVOKED)
162 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\trevoked");
163 if (status & CERT_TRUST_IS_NOT_SIGNATURE_VALID)
164 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tbad signature");
165 if (status & CERT_TRUST_IS_NOT_VALID_FOR_USAGE)
166 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tbad usage");
167 if (status & CERT_TRUST_IS_UNTRUSTED_ROOT)
168 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tuntrusted root");
169 if (status & CERT_TRUST_REVOCATION_STATUS_UNKNOWN)
170 pos += snprintf(buf + pos, sizeof(buf) - pos,
171 "\n\tunknown revocation status");
172 if (status & CERT_TRUST_IS_CYCLIC)
173 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tcyclic chain");
174 if (status & CERT_TRUST_INVALID_EXTENSION)
175 pos += snprintf(buf + pos, sizeof(buf) - pos,
176 "\n\tunsupported critical extension");
177 if (status & CERT_TRUST_INVALID_POLICY_CONSTRAINTS)
178 pos += snprintf(buf + pos, sizeof(buf) - pos, "\n\tbad policy");
179 if (status & CERT_TRUST_INVALID_BASIC_CONSTRAINTS)
180 pos += snprintf(buf + pos, sizeof(buf) - pos,
181 "\n\tbad basic constraints");
182 if (status & CERT_TRUST_INVALID_NAME_CONSTRAINTS)
183 pos += snprintf(buf + pos, sizeof(buf) - pos,
184 "\n\tbad name constraints");
185 if (status & CERT_TRUST_HAS_NOT_SUPPORTED_NAME_CONSTRAINT)
186 pos += snprintf(buf + pos, sizeof(buf) - pos,
187 "\n\tunsuported name constraint");
188 if (status & CERT_TRUST_HAS_NOT_DEFINED_NAME_CONSTRAINT)
189 pos += snprintf(buf + pos, sizeof(buf) - pos,
190 "\n\tundefined name constraint");
191 if (status & CERT_TRUST_HAS_NOT_PERMITTED_NAME_CONSTRAINT)
192 pos += snprintf(buf + pos, sizeof(buf) - pos,
193 "\n\tdisallowed name constraint");
194 if (status & CERT_TRUST_HAS_EXCLUDED_NAME_CONSTRAINT)
195 pos += snprintf(buf + pos, sizeof(buf) - pos,
196 "\n\texcluded name constraint");
197 if (status & CERT_TRUST_IS_OFFLINE_REVOCATION)
198 pos += snprintf(buf + pos, sizeof(buf) - pos,
199 "\n\trevocation server offline");
200 if (status & CERT_TRUST_NO_ISSUANCE_CHAIN_POLICY)
201 pos += snprintf(buf + pos, sizeof(buf) - pos,
202 "\n\tno issuance policy");
206 static const char *get_cert_common_name(PCCERT_CONTEXT cert)
208 static char buf[1024];
209 const char *name = NULL;
210 CERT_NAME_INFO *nameInfo;
212 BOOL ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_NAME,
213 cert->pCertInfo->Subject.pbData, cert->pCertInfo->Subject.cbData,
214 CRYPT_DECODE_NOCOPY_FLAG | CRYPT_DECODE_ALLOC_FLAG, NULL, &nameInfo,
219 PCERT_RDN_ATTR commonName = CertFindRDNAttr(szOID_COMMON_NAME,
224 CertRDNValueToStrA(commonName->dwValueType,
225 &commonName->Value, buf, sizeof(buf));
233 static void check_and_store_certs(HCERTSTORE from, HCERTSTORE to)
235 DWORD root_count = 0;
236 CERT_CHAIN_ENGINE_CONFIG chainEngineConfig =
237 { sizeof(chainEngineConfig), 0 };
238 HCERTCHAINENGINE engine;
242 CertDuplicateStore(to);
243 engine = CRYPT_CreateChainEngine(to, &chainEngineConfig);
246 PCCERT_CONTEXT cert = NULL;
249 cert = CertEnumCertificatesInStore(from, cert);
252 CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
253 PCCERT_CHAIN_CONTEXT chain;
254 BOOL ret = CertGetCertificateChain(engine, cert, NULL, from,
255 &chainPara, 0, NULL, &chain);
258 TRACE("rejecting %s: %s\n", get_cert_common_name(cert),
259 "chain creation failed");
262 /* The only allowed error is CERT_TRUST_IS_UNTRUSTED_ROOT */
263 if (chain->TrustStatus.dwErrorStatus &
264 ~CERT_TRUST_IS_UNTRUSTED_ROOT)
265 TRACE("rejecting %s: %s\n", get_cert_common_name(cert),
266 trust_status_to_str(chain->TrustStatus.dwErrorStatus &
267 ~CERT_TRUST_IS_UNTRUSTED_ROOT));
272 for (i = 0; i < chain->cChain; i++)
273 for (j = 0; j < chain->rgpChain[i]->cElement; j++)
274 if (CertAddCertificateContextToStore(to,
275 chain->rgpChain[i]->rgpElement[j]->pCertContext,
276 CERT_STORE_ADD_NEW, NULL))
279 CertFreeCertificateChain(chain);
283 CertFreeCertificateChainEngine(engine);
285 TRACE("Added %d root certificates\n", root_count);
288 /* Reads the file fd, and imports any certificates in it into store.
289 * Returns TRUE if any certificates were successfully imported.
291 static BOOL import_certs_from_file(int fd, HCERTSTORE store)
298 fp = fdopen(fd, "r");
301 ret = import_base64_certs_from_fp(fp, store);
307 static BOOL import_certs_from_path(LPCSTR path, HCERTSTORE store,
310 /* Opens path, which must be a directory, and imports certificates from every
311 * file in the directory into store.
312 * Returns TRUE if any certificates were successfully imported.
314 static BOOL import_certs_from_dir(LPCSTR path, HCERTSTORE store)
319 TRACE("(%s, %p)\n", debugstr_a(path), store);
324 size_t bufsize = strlen(path) + 1 + PATH_MAX + 1;
325 char *filebuf = CryptMemAlloc(bufsize);
329 struct dirent *entry;
330 while ((entry = readdir(dir)))
332 if (strcmp(entry->d_name, ".") && strcmp(entry->d_name, ".."))
334 snprintf(filebuf, bufsize, "%s/%s", path, entry->d_name);
335 if (import_certs_from_path(filebuf, store, FALSE) && !ret)
340 CryptMemFree(filebuf);
346 /* Opens path, which may be a file or a directory, and imports any certificates
347 * it finds into store.
348 * Returns TRUE if any certificates were successfully imported.
350 static BOOL import_certs_from_path(LPCSTR path, HCERTSTORE store,
356 TRACE("(%s, %p, %d)\n", debugstr_a(path), store, allow_dir);
358 fd = open(path, O_RDONLY);
363 if (fstat(fd, &st) == 0)
365 if (S_ISREG(st.st_mode))
366 ret = import_certs_from_file(fd, store);
367 else if (S_ISDIR(st.st_mode))
370 ret = import_certs_from_dir(path, store);
372 WARN("%s is a directory and directories are disallowed\n",
376 ERR("%s: invalid file type\n", path);
383 static BOOL WINAPI CRYPT_RootWriteCert(HCERTSTORE hCertStore,
384 PCCERT_CONTEXT cert, DWORD dwFlags)
386 /* The root store can't have certs added */
390 static BOOL WINAPI CRYPT_RootDeleteCert(HCERTSTORE hCertStore,
391 PCCERT_CONTEXT cert, DWORD dwFlags)
393 /* The root store can't have certs deleted */
397 static BOOL WINAPI CRYPT_RootWriteCRL(HCERTSTORE hCertStore,
398 PCCRL_CONTEXT crl, DWORD dwFlags)
400 /* The root store can have CRLs added. At worst, a malicious application
401 * can DoS itself, as the changes aren't persisted in any way.
406 static BOOL WINAPI CRYPT_RootDeleteCRL(HCERTSTORE hCertStore,
407 PCCRL_CONTEXT crl, DWORD dwFlags)
409 /* The root store can't have CRLs deleted */
413 static void *rootProvFuncs[] = {
414 NULL, /* CERT_STORE_PROV_CLOSE_FUNC */
415 NULL, /* CERT_STORE_PROV_READ_CERT_FUNC */
417 CRYPT_RootDeleteCert,
418 NULL, /* CERT_STORE_PROV_SET_CERT_PROPERTY_FUNC */
419 NULL, /* CERT_STORE_PROV_READ_CRL_FUNC */
422 NULL, /* CERT_STORE_PROV_SET_CRL_PROPERTY_FUNC */
423 NULL, /* CERT_STORE_PROV_READ_CTL_FUNC */
424 NULL, /* CERT_STORE_PROV_WRITE_CTL_FUNC */
425 NULL, /* CERT_STORE_PROV_DELETE_CTL_FUNC */
426 NULL, /* CERT_STORE_PROV_SET_CTL_PROPERTY_FUNC */
427 NULL, /* CERT_STORE_PROV_CONTROL_FUNC */
430 static const char * const CRYPT_knownLocations[] = {
431 "/etc/ssl/certs/ca-certificates.crt",
433 "/etc/pki/tls/certs/ca-bundle.crt",
436 /* Reads certificates from the list of known locations. Stops when any
437 * location contains any certificates, to prevent spending unnecessary time
438 * adding redundant certificates, e.g. when both a certificate bundle and
439 * individual certificates exist in the same directory.
441 static PWINECRYPT_CERTSTORE CRYPT_RootOpenStoreFromKnownLocations(void)
443 HCERTSTORE root = NULL;
444 HCERTSTORE from = CertOpenStore(CERT_STORE_PROV_MEMORY,
445 X509_ASN_ENCODING, 0, CERT_STORE_CREATE_NEW_FLAG, NULL);
446 HCERTSTORE to = CertOpenStore(CERT_STORE_PROV_MEMORY,
447 X509_ASN_ENCODING, 0, CERT_STORE_CREATE_NEW_FLAG, NULL);
451 CERT_STORE_PROV_INFO provInfo = {
452 sizeof(CERT_STORE_PROV_INFO),
453 sizeof(rootProvFuncs) / sizeof(rootProvFuncs[0]),
463 i < sizeof(CRYPT_knownLocations) / sizeof(CRYPT_knownLocations[0]);
465 ret = import_certs_from_path(CRYPT_knownLocations[i], from, TRUE);
466 check_and_store_certs(from, to);
467 root = CRYPT_ProvCreateStore(0, to, &provInfo);
469 CertCloseStore(from, 0);
470 TRACE("returning %p\n", root);
474 static PWINECRYPT_CERTSTORE CRYPT_rootStore;
476 PWINECRYPT_CERTSTORE CRYPT_RootOpenStore(HCRYPTPROV hCryptProv, DWORD dwFlags)
478 TRACE("(%ld, %08x)\n", hCryptProv, dwFlags);
480 if (dwFlags & CERT_STORE_DELETE_FLAG)
482 WARN("root store can't be deleted\n");
483 SetLastError(ERROR_ACCESS_DENIED);
486 switch (dwFlags & CERT_SYSTEM_STORE_LOCATION_MASK)
488 case CERT_SYSTEM_STORE_LOCAL_MACHINE:
489 case CERT_SYSTEM_STORE_CURRENT_USER:
492 TRACE("location %08x unsupported\n",
493 dwFlags & CERT_SYSTEM_STORE_LOCATION_MASK);
494 SetLastError(E_INVALIDARG);
497 if (!CRYPT_rootStore)
499 HCERTSTORE root = CRYPT_RootOpenStoreFromKnownLocations();
501 InterlockedCompareExchangePointer((PVOID *)&CRYPT_rootStore, root,
503 if (CRYPT_rootStore != root)
504 CertCloseStore(root, 0);
506 CertDuplicateStore(CRYPT_rootStore);
507 return CRYPT_rootStore;
510 void root_store_free(void)
512 CertCloseStore(CRYPT_rootStore, 0);