/* * libretroshare/src gpgauthmgr.cc * * GnuPG/GPGme interface for RetroShare. * * Copyright 2008-2009 by Robert Fernie, Retroshare Team. * * This library is free software; you can redistribute it and/or * modify it under the termsf the GNU Library General Public * License Version 2 as published by the Free Software Foundation. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA. * * Please report all bugs and problems to "retroshare@lunamutt.com". * * */ /**** * At an SSL Certificate level: * Processx509() calls (virtual) ValidateCertificate() to check if it correctly * signed by an known PGP certificate. * * this will return true - even if the pgp cert is not authed. * * a connection will cause VerifyX509Callback to be called. This is a virtual fn. * * AuthCertificate() is called to make a certificate authenticated. * this does nothing but set a flag at the SSL level * no real auth at SSL only level. * * GPG Functions: * ValidateCertificate() calls, * bool GPGAuthMgr::AuthX509(X509 *x509) * VerifySignature() * * VerifyX509Callback() * calls AuthX509(). * calls isPGPAuthenticated(std::string id) * * AuthCertificate(). * check isPGPAuthenticated(). * if not - sign PGP certificate. * * access to local data is protected via pgpMtx. */ #include "authgpg.h" #include #include /* Turn a set of parameters into a string */ static std::string setKeyPairParams(bool useRsa, unsigned int blen, std::string name, std::string comment, std::string email, std::string inPassphrase); static gpgme_key_t getKey(gpgme_ctx_t, std::string, std::string, std::string); static gpg_error_t keySignCallback(void *, gpgme_status_code_t, \ const char *, int); static gpg_error_t trustCallback(void *, gpgme_status_code_t, \ const char *, int); static void ProcessPGPmeError(gpgme_error_t ERR); /* Function to sign X509_REQ via GPGme. */ // the single instance of this, but only when SSL Only static GPGAuthMgr instance_gpgroot; p3AuthMgr *getAuthMgr() { return &instance_gpgroot; } gpgcert::gpgcert() :key(NULL) { return; } gpgcert::~gpgcert() { if (key) { gpgme_key_unref(key); } } gpg_error_t pgp_pwd_callback(void *hook, const char *uid_hint, const char *passphrase_info, int prev_was_bad, int fd) { const char *passwd = (const char *) hook; if (prev_was_bad) fprintf(stderr, "pgp_pwd_callback() Prev was bad!\n"); //fprintf(stderr, "pgp_pwd_callback() Set Password to:\"%s\"\n", passwd); fprintf(stderr, "pgp_pwd_callback() Set Password\n"); #ifndef WINDOWS_SYS write(fd, passwd, strlen(passwd)); write(fd, "\n", 1); /* needs a new line? */ #else DWORD written = 0; HANDLE winFd = (HANDLE) fd; WriteFile(winFd, passwd, strlen(passwd), &written, NULL); WriteFile(winFd, "\n", 1, &written, NULL); #endif return 0; } static char *PgpPassword = NULL; bool GPGAuthMgr::setPGPPassword_locked(std::string pwd) { /* reset it while we change it */ gpgme_set_passphrase_cb(CTX, NULL, NULL); if (PgpPassword) free(PgpPassword); PgpPassword = (char *) malloc(pwd.length() + 1); memcpy(PgpPassword, pwd.c_str(), pwd.length()); PgpPassword[pwd.length()] = '\0'; fprintf(stderr, "GPGAuthMgr::setPGPPassword_locked() called\n"); gpgme_set_passphrase_cb(CTX, pgp_pwd_callback, (void *) PgpPassword); return true; } GPGAuthMgr::GPGAuthMgr() :gpgmeInit(false) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ setlocale(LC_ALL, ""); gpgme_check_version(NULL); gpgme_set_locale(NULL, LC_CTYPE, setlocale (LC_CTYPE, NULL)); #ifdef LC_MESSAGES gpgme_set_locale(NULL, LC_MESSAGES, setlocale (LC_MESSAGES, NULL)); #endif if (GPG_ERR_NO_ERROR != gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP)) { std::cerr << "Error check engine version"; std::cerr << std::endl; return; } if (GPG_ERR_NO_ERROR != gpgme_get_engine_info(&INFO)) { std::cerr << "Error getting engine info"; std::cerr << std::endl; return; } /* Create New Contexts */ if (GPG_ERR_NO_ERROR != gpgme_new(&CTX)) { std::cerr << "Error creating GPGME Context"; std::cerr << std::endl; return; } /* setup the protocol */ if (GPG_ERR_NO_ERROR != gpgme_set_protocol(CTX, GPGME_PROTOCOL_OpenPGP)) { std::cerr << "Error creating Setting Protocol"; std::cerr << std::endl; return; } /* if we get to here -> we have inited okay */ gpgmeInit = true; storeAllKeys_locked(); printAllKeys_locked(); updateTrustAllKeys_locked(); } /* This function is called when retroshare is first started * to get the list of available GPG certificates. * This function should only return certs for which * the private(secret) keys are available. * * returns false if GnuPG is not available. */ bool GPGAuthMgr::availablePGPCertificates(std::list &ids) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ int i = 0; gpgme_key_t KEY = NULL; gpg_error_t ERR; /* XXX should check that CTX is valid */ if (!gpgmeInit) { return false; } /* Initiates a key listing */ if (GPG_ERR_NO_ERROR != gpgme_op_keylist_start (CTX, "", 1)) { std::cerr << "Error iterating through KeyList"; std::cerr << std::endl; return false; } /* Loop until end of key */ for(i = 0;(GPG_ERR_NO_ERROR == (ERR = gpgme_op_keylist_next (CTX, &KEY))); i++) { if (KEY->subkeys) { ids.push_back(KEY->subkeys->keyid); std::cerr << "GPGAuthMgr::availablePGPCertificates() Added: " << KEY->subkeys->keyid << std::endl; } else { std::cerr << "GPGAuthMgr::availablePGPCertificates() Missing subkey" << std::endl; } } if (GPG_ERR_NO_ERROR != gpgme_op_keylist_end(CTX)) { std::cerr << "Error ending KeyList"; std::cerr << std::endl; return false; } std::cerr << "GPGAuthMgr::availablePGPCertificates() Secret Key Count: " << i << std::endl; /* return false if there are no private keys */ return (i > 0); } /* You can initialise Retroshare with * (a) load existing certificate. * (b) a new certificate. * * This function must be called successfully (return == 1) * before anything else can be done. (except above fn). */ int GPGAuthMgr::GPGInit(std::string ownId) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ gpgme_key_t newKey; gpg_error_t ERR; if (!gpgmeInit) { return 0; } /***** if (!isOwnCert(ownId)) { return 0; } *****/ if(GPG_ERR_NO_ERROR != (ERR = gpgme_get_key(CTX, ownId.c_str(), &newKey, 1))) { std::cerr << "Error reading the key from keyring" << std::endl; return 0; } mOwnGpgCert.user.name = newKey->uids->name; mOwnGpgCert.user.email = newKey->uids->email; mOwnGpgCert.user.fpr = newKey->subkeys->fpr; mOwnGpgCert.user.id = ownId; mOwnGpgCert.key = newKey; mOwnId = ownId; gpgmeKeySelected = true; // Password set in different fn. //this->passphrase = passphrase; //setPGPPassword_locked(passphrase); return true; } int GPGAuthMgr::GPGInit(std::string name, std::string comment, std::string email, std::string inPassphrase) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ gpgme_key_t newKey; gpgme_genkey_result_t result; gpg_error_t ERR; if (!gpgmeInit) { return 0; } if(GPG_ERR_NO_ERROR != (ERR = gpgme_op_genkey(CTX, setKeyPairParams(true, 2048, name, comment, email, \ passphrase).c_str(), NULL, NULL))) { std::cerr << "Error generating the key" << std::endl; return 0; } if((result = gpgme_op_genkey_result(CTX)) == NULL) return 0; if(GPG_ERR_NO_ERROR != (ERR = gpgme_get_key(CTX, result->fpr, &newKey, 1))) { std::cerr << "Error reading own key" << std::endl; return 0; } mOwnGpgCert.user.name = name; mOwnGpgCert.user.email = email; mOwnGpgCert.user.fpr = newKey->subkeys->fpr; mOwnGpgCert.user.id = newKey->subkeys->keyid; mOwnGpgCert.key = newKey; this->passphrase = inPassphrase; setPGPPassword_locked(inPassphrase); mOwnId = mOwnGpgCert.user.id; gpgmeKeySelected = true; return 1; } GPGAuthMgr::~GPGAuthMgr() { } int GPGAuthMgr::LoadGPGPassword(std::string pwd) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ if (!gpgmeInit) { return 0; } this->passphrase = pwd; setPGPPassword_locked(pwd); return 1; } // store all keys in map mKeyList to avoid callin gpgme exe repeatedly bool GPGAuthMgr::storeAllKeys_locked() { std::cerr << "GPGAuthMgr::storeAllKeys_locked()"; std::cerr << std::endl; gpg_error_t ERR; if (!gpgmeInit) { std::cerr << "Error since GPG is not initialised"; std::cerr << std::endl; return false; } std::cerr << "GPGAuthMgr::storeAllKeys_locked() clearing existing ones"; std::cerr << std::endl; mKeyList.clear(); /* enable SIG mode */ gpgme_keylist_mode_t origmode = gpgme_get_keylist_mode(CTX); gpgme_keylist_mode_t mode = origmode | GPGME_KEYLIST_MODE_SIGS; gpgme_set_keylist_mode(CTX, mode); /* store keys */ gpgme_key_t KEY = NULL; /* Initiates a key listing 0 = All Keys */ if (GPG_ERR_NO_ERROR != gpgme_op_keylist_start (CTX, "", 0)) { std::cerr << "Error iterating through KeyList"; std::cerr << std::endl; gpgme_set_keylist_mode(CTX, origmode); return false; } /* Loop until end of key */ for(int i = 0;(GPG_ERR_NO_ERROR == (ERR = gpgme_op_keylist_next (CTX, &KEY))); i++) { /* store in pqiAuthDetails */ gpgcert nu; /* NB subkeys is a linked list and can contain multiple keys. * first key is primary. */ if ((!KEY->subkeys) || (!KEY->uids)) { std::cerr << "Invalid Key in List... skipping"; std::cerr << std::endl; continue; } /* In general MainSubKey is used to sign all others! * Don't really need to worry about other ids either. */ gpgme_subkey_t mainsubkey = KEY->subkeys; nu.user.id = mainsubkey->keyid; nu.user.fpr = mainsubkey->fpr; std::cerr << "MAIN KEYID: " << nu.user.id; std::cerr << " FPR: " << nu.user.fpr; std::cerr << std::endl; gpgme_subkey_t subkeylist = KEY->subkeys; while(subkeylist != NULL) { std::cerr << "\tKEYID: " << subkeylist->keyid; std::cerr << " FPR: " << subkeylist->fpr; std::cerr << std::endl; subkeylist = subkeylist->next; } /* NB uids is a linked list and can contain multiple ids. * first id is primary. */ gpgme_user_id_t mainuid = KEY->uids; nu.user.name = mainuid->name; nu.user.email = mainuid->email; gpgme_key_sig_t mainsiglist = mainuid->signatures; while(mainsiglist != NULL) { if (mainsiglist->status == GPG_ERR_NO_ERROR) { /* add as a signature ... even if the * we haven't go the peer yet. * (might be yet to come). */ std::string keyid = mainsiglist->keyid; if (nu.user.signers.end() == std::find( nu.user.signers.begin(), nu.user.signers.end(),keyid)) { nu.user.signers.push_back(keyid); } } mainsiglist = mainsiglist->next; } gpgme_user_id_t uidlist = KEY->uids; while(uidlist != NULL) { std::cerr << "\tUID: " << uidlist->uid; std::cerr << " NAME: " << uidlist->name; std::cerr << " EMAIL: " << uidlist->email; std::cerr << " VALIDITY: " << uidlist->validity; std::cerr << std::endl; gpgme_key_sig_t usiglist = uidlist->signatures; while(usiglist != NULL) { std::cerr << "\t\tSIG KEYID: " << usiglist->keyid; std::cerr << " UID: " << usiglist->uid; std::cerr << " NAME: " << usiglist->name; std::cerr << " EMAIL: " << usiglist->email; std::cerr << " VALIDITY: " << (usiglist->status == GPG_ERR_NO_ERROR); std::cerr << std::endl; usiglist = usiglist->next; } uidlist = uidlist->next; } /* signatures are attached to uids... but only supplied * if GPGME_KEYLIST_MODE_SIGS is on. * signature notation supplied is GPGME_KEYLIST_MODE_SIG_NOTATION is on */ nu.user.trustLvl = KEY->owner_trust; nu.user.ownsign = KEY->can_sign; nu.user.validLvl = mainuid->validity; nu.user.trusted = (mainuid->validity > GPGME_VALIDITY_MARGINAL); /* grab a reference, so the key remains */ gpgme_key_ref(KEY); nu.key = KEY; /* store in map */ mKeyList[nu.user.id] = nu; } if (GPG_ERR_NO_ERROR != gpgme_op_keylist_end(CTX)) { std::cerr << "Error ending KeyList"; std::cerr << std::endl; gpgme_set_keylist_mode(CTX, origmode); return false; } gpgme_set_keylist_mode(CTX, origmode); return true; } // update trust on all available keys. bool GPGAuthMgr::updateTrustAllKeys_locked() { gpg_error_t ERR; if (!gpgmeInit) { std::cerr << "Error since GPG is not initialised"; std::cerr << std::endl; return false; } /* have to do this the hard way! */ gpgme_trust_item_t ti = NULL; std::map::iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { /* check for trust items associated with key */ std::string peerid = it->second.user.email; std::cerr << "Searching GPGme for TrustInfo on: " << peerid; std::cerr << std::endl; /* Initiates a key listing. NB: maxlevel is ignored!*/ if (GPG_ERR_NO_ERROR != (ERR = gpgme_op_trustlist_start (CTX, peerid.c_str(), 0))) { std::cerr << "Error Starting Trust List"; std::cerr << std::endl; ProcessPGPmeError(ERR); continue; } /* Loop until end of key */ for(int i = 0;(GPG_ERR_NO_ERROR == (ERR = gpgme_op_trustlist_next (CTX, &ti))); i++) { std::string keyid = ti->keyid; int type = ti->type; int level = ti->level; /* identify the peers, and add trust level */ std::cerr << "GPGme Trust Item for: " << keyid; std::cerr << std::endl; std::cerr << "\t Type: " << type; std::cerr << " Level: " << level; std::cerr << std::endl; std::cerr << "\t Owner Trust: " << ti->owner_trust; std::cerr << " Validity: " << ti->validity; std::cerr << " Name: " << ti->name; std::cerr << std::endl; } std::cerr << "End of TrustList Iteration."; std::cerr << std::endl; ProcessPGPmeError(ERR); if (GPG_ERR_NO_ERROR != gpgme_op_trustlist_end(CTX)) { std::cerr << "Error ending TrustList"; std::cerr << std::endl; ProcessPGPmeError(ERR); } } return true; } bool GPGAuthMgr::printAllKeys_locked() { certmap::const_iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { std::cerr << "PGP Key: " << it->second.user.id; std::cerr << std::endl; std::cerr << "\tName: " << it->second.user.name; std::cerr << std::endl; std::cerr << "\tEmail: " << it->second.user.email; std::cerr << std::endl; std::cerr << "\ttrustLvl: " << it->second.user.trustLvl; std::cerr << std::endl; std::cerr << "\townsign?: " << it->second.user.ownsign; std::cerr << std::endl; std::cerr << "\ttrusted/valid: " << it->second.user.trusted; std::cerr << std::endl; std::cerr << "\tEmail: " << it->second.user.email; std::cerr << std::endl; std::list::const_iterator sit; for(sit = it->second.user.signers.begin(); sit != it->second.user.signers.end(); sit++) { std::cerr << "\t\tSigner ID:" << *sit; /* do a naughty second search.. should be ok * as we aren't modifying list. */ certmap::const_iterator kit = mKeyList.find(*sit); if (kit != mKeyList.end()) { std::cerr << " Name:" << kit->second.user.name; std::cerr << std::endl; } } } return true; } bool GPGAuthMgr::printOwnKeys_locked() { certmap::iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { if (it->second.user.ownsign) { std::cerr << "Own PGP Key: " << it->second.user.id; std::cerr << std::endl; std::cerr << "\tName: " << it->second.user.name; std::cerr << std::endl; std::cerr << "\tEmail: " << it->second.user.email; std::cerr << std::endl; } } return true; } bool GPGAuthMgr::printKeys() { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ printAllKeys_locked(); return printOwnKeys_locked(); } X509 *GPGAuthMgr::SignX509Req(X509_REQ *req, long days, std::string gpg_passwd) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* Transform the X509_REQ into a suitable format to * generate DIGEST hash. (for SSL to do grunt work) */ #define SERIAL_RAND_BITS 64 const EVP_MD *digest = EVP_sha1(); ASN1_INTEGER *serial = ASN1_INTEGER_new(); EVP_PKEY *tmppkey; X509 *x509 = X509_new(); if (x509 == NULL) { std::cerr << "GPGAuthMgr::SignX509Req() FAIL" << std::endl; return NULL; } long version = 0x00; unsigned long chtype = MBSTRING_ASC; X509_NAME *issuer_name = X509_NAME_new(); X509_NAME_add_entry_by_txt(issuer_name, "CN", chtype, (unsigned char *) mOwnId.c_str(), -1, -1, 0); /**** X509_NAME_add_entry_by_NID(issuer_name, 48, 0, (unsigned char *) "email@email.com", -1, -1, 0); X509_NAME_add_entry_by_txt(issuer_name, "O", chtype, (unsigned char *) "org", -1, -1, 0); X509_NAME_add_entry_by_txt(x509_name, "L", chtype, (unsigned char *) "loc", -1, -1, 0); ****/ std::cerr << "GPGAuthMgr::SignX509Req() Issuer name: " << mOwnId << std::endl; BIGNUM *btmp = BN_new(); if (!BN_pseudo_rand(btmp, SERIAL_RAND_BITS, 0, 0)) { std::cerr << "GPGAuthMgr::SignX509Req() rand FAIL" << std::endl; return NULL; } if (!BN_to_ASN1_INTEGER(btmp, serial)) { std::cerr << "GPGAuthMgr::SignX509Req() asn1 FAIL" << std::endl; return NULL; } BN_free(btmp); if (!X509_set_serialNumber(x509, serial)) { std::cerr << "GPGAuthMgr::SignX509Req() serial FAIL" << std::endl; return NULL; } ASN1_INTEGER_free(serial); /* Generate SUITABLE issuer name. * Must reference OpenPGP key, that is used to verify it */ if (!X509_set_issuer_name(x509, issuer_name)) { std::cerr << "GPGAuthMgr::SignX509Req() issue FAIL" << std::endl; return NULL; } X509_NAME_free(issuer_name); if (!X509_gmtime_adj(X509_get_notBefore(x509),0)) { std::cerr << "GPGAuthMgr::SignX509Req() notbefore FAIL" << std::endl; return NULL; } if (!X509_gmtime_adj(X509_get_notAfter(x509), (long)60*60*24*days)) { std::cerr << "GPGAuthMgr::SignX509Req() notafter FAIL" << std::endl; return NULL; } if (!X509_set_subject_name(x509, X509_REQ_get_subject_name(req))) { std::cerr << "GPGAuthMgr::SignX509Req() sub FAIL" << std::endl; return NULL; } tmppkey = X509_REQ_get_pubkey(req); if (!tmppkey || !X509_set_pubkey(x509,tmppkey)) { std::cerr << "GPGAuthMgr::SignX509Req() pub FAIL" << std::endl; return NULL; } std::cerr << "X509 Cert, prepared for signing" << std::endl; /*** NOW The Manual signing bit (HACKED FROM asn1/a_sign.c) ***/ int (*i2d)(X509_CINF*, unsigned char**) = i2d_X509_CINF; X509_ALGOR *algor1 = x509->cert_info->signature; X509_ALGOR *algor2 = x509->sig_alg; ASN1_BIT_STRING *signature = x509->signature; X509_CINF *data = x509->cert_info; EVP_PKEY *pkey = NULL; const EVP_MD *type = EVP_sha1(); EVP_MD_CTX ctx; unsigned char *p,*buf_in=NULL; unsigned char *buf_hashout=NULL,*buf_sigout=NULL; int i,inl=0,hashoutl=0,hashoutll=0; int sigoutl=0,sigoutll=0; X509_ALGOR *a; EVP_MD_CTX_init(&ctx); /* FIX ALGORITHMS */ a = algor1; ASN1_TYPE_free(a->parameter); a->parameter=ASN1_TYPE_new(); a->parameter->type=V_ASN1_NULL; ASN1_OBJECT_free(a->algorithm); a->algorithm=OBJ_nid2obj(type->pkey_type); a = algor2; ASN1_TYPE_free(a->parameter); a->parameter=ASN1_TYPE_new(); a->parameter->type=V_ASN1_NULL; ASN1_OBJECT_free(a->algorithm); a->algorithm=OBJ_nid2obj(type->pkey_type); std::cerr << "Algorithms Fixed" << std::endl; /* input buffer */ inl=i2d(data,NULL); buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl); hashoutll=hashoutl=EVP_MD_size(type); buf_hashout=(unsigned char *)OPENSSL_malloc((unsigned int)hashoutl); sigoutll=sigoutl=2048; // hashoutl; //EVP_PKEY_size(pkey); buf_sigout=(unsigned char *)OPENSSL_malloc((unsigned int)sigoutl); std::cerr << "Buffer Sizes: in: " << inl; std::cerr << " HashOut: " << hashoutl; std::cerr << " SigOut: " << sigoutl; std::cerr << std::endl; if ((buf_in == NULL) || (buf_hashout == NULL) || (buf_sigout == NULL)) { hashoutl=0; sigoutl=0; fprintf(stderr, "GPGAuthMgr::SignX509Req: ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE)\n"); goto err; } p=buf_in; std::cerr << "Buffers Allocated" << std::endl; i2d(data,&p); /* data in buf_in, ready to be hashed */ EVP_DigestInit_ex(&ctx,type, NULL); EVP_DigestUpdate(&ctx,(unsigned char *)buf_in,inl); if (!EVP_DigestFinal(&ctx,(unsigned char *)buf_hashout, (unsigned int *)&hashoutl)) { hashoutl=0; fprintf(stderr, "GPGAuthMgr::SignX509Req: ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB)\n"); goto err; } std::cerr << "Digest Applied: len: " << hashoutl << std::endl; /* NOW Sign via GPG Functions */ if (!DoOwnSignature_locked(buf_hashout, hashoutl, buf_sigout, (unsigned int *) &sigoutl)) { sigoutl = 0; goto err; } //passphrase = "NULL"; std::cerr << "Signature done: len:" << sigoutl << std::endl; /* ADD Signature back into Cert... Signed!. */ if (signature->data != NULL) OPENSSL_free(signature->data); signature->data=buf_sigout; buf_sigout=NULL; signature->length=sigoutl; /* In the interests of compatibility, I'll make sure that * the bit string has a 'not-used bits' value of 0 */ signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); signature->flags|=ASN1_STRING_FLAG_BITS_LEFT; std::cerr << "Certificate Complete" << std::endl; return x509; err: /* cleanup */ std::cerr << "GPGAuthMgr::SignX509Req() err: FAIL" << std::endl; return NULL; } #if 0 int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey, const EVP_MD *type) #define X509_sign(x,pkey,md) \ ASN1_sign((int (*)())i2d_X509_CINF, x->cert_info->signature, \ x->sig_alg, x->signature, (char *)x->cert_info,pkey,md) return NULL; } #endif bool GPGAuthMgr::AuthX509(X509 *x509) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* extract CN for peer Id */ X509_NAME *issuer = X509_get_issuer_name(x509); std::string id = ""; /* verify signature */ /*** NOW The Manual signing bit (HACKED FROM asn1/a_sign.c) ***/ int (*i2d)(X509_CINF*, unsigned char**) = i2d_X509_CINF; ASN1_BIT_STRING *signature = x509->signature; X509_CINF *data = x509->cert_info; EVP_PKEY *pkey = NULL; const EVP_MD *type = EVP_sha1(); EVP_MD_CTX ctx; unsigned char *p,*buf_in=NULL; unsigned char *buf_hashout=NULL,*buf_sigout=NULL; int i,inl=0,hashoutl=0,hashoutll=0; int sigoutl=0,sigoutll=0; X509_ALGOR *a; fprintf(stderr, "GPGAuthMgr::AuthX509()\n"); EVP_MD_CTX_init(&ctx); /* input buffer */ inl=i2d(data,NULL); buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl); hashoutll=hashoutl=EVP_MD_size(type); buf_hashout=(unsigned char *)OPENSSL_malloc((unsigned int)hashoutl); sigoutll=sigoutl=2048; //hashoutl; //EVP_PKEY_size(pkey); buf_sigout=(unsigned char *)OPENSSL_malloc((unsigned int)sigoutl); std::cerr << "Buffer Sizes: in: " << inl; std::cerr << " HashOut: " << hashoutl; std::cerr << " SigOut: " << sigoutl; std::cerr << std::endl; if ((buf_in == NULL) || (buf_hashout == NULL) || (buf_sigout == NULL)) { hashoutl=0; sigoutl=0; fprintf(stderr, "GPGAuthMgr::AuthX509: ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE)\n"); goto err; } p=buf_in; std::cerr << "Buffers Allocated" << std::endl; i2d(data,&p); /* data in buf_in, ready to be hashed */ EVP_DigestInit_ex(&ctx,type, NULL); EVP_DigestUpdate(&ctx,(unsigned char *)buf_in,inl); if (!EVP_DigestFinal(&ctx,(unsigned char *)buf_hashout, (unsigned int *)&hashoutl)) { hashoutl=0; fprintf(stderr, "GPGAuthMgr::AuthX509: ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB)\n"); goto err; } std::cerr << "Digest Applied: len: " << hashoutl << std::endl; /* copy data into signature */ sigoutl = signature->length; memmove(buf_sigout, signature->data, sigoutl); /* NOW Sign via GPG Functions */ if (!VerifySignature_locked(id, buf_hashout, hashoutl, buf_sigout, (unsigned int) sigoutl)) { sigoutl = 0; goto err; } return true; err: return false; } void ProcessPGPmeError(gpgme_error_t ERR) { gpgme_err_code_t code = gpgme_err_code(ERR); gpgme_err_source_t src = gpgme_err_source(ERR); std::cerr << "GPGme ERROR: Code: " << code << " Source: " << src << std::endl; std::cerr << "GPGme ERROR: " << gpgme_strerror(ERR) << std::endl; } void print_pgpme_verify_summary(unsigned int summary) { std::cerr << "\tFLAGS:"; if (summary & GPGME_SIGSUM_VALID) std::cerr << " VALID "; if (summary & GPGME_SIGSUM_GREEN) std::cerr << " GREEN "; if (summary & GPGME_SIGSUM_RED) std::cerr << " RED "; if (summary & GPGME_SIGSUM_KEY_REVOKED) std::cerr << " KEY_REVOKED "; if (summary & GPGME_SIGSUM_KEY_EXPIRED) std::cerr << " KEY_EXPIRED "; if (summary & GPGME_SIGSUM_KEY_MISSING) std::cerr << " KEY_MISSING "; if (summary & GPGME_SIGSUM_CRL_MISSING) std::cerr << " CRL_MISSING "; if (summary & GPGME_SIGSUM_CRL_TOO_OLD) std::cerr << " CRL_TOO_OLD "; if (summary & GPGME_SIGSUM_BAD_POLICY) std::cerr << " BAD_POLICY "; if (summary & GPGME_SIGSUM_SYS_ERROR) std::cerr << " SYS_ERROR "; std::cerr << std::endl; } bool GPGAuthMgr::DoOwnSignature_locked(void *data, unsigned int datalen, void *buf_sigout, unsigned int *outl) { /* setup signers */ gpgme_signers_clear(CTX); if (GPG_ERR_NO_ERROR != gpgme_signers_add(CTX, mOwnGpgCert.key)) { std::cerr << "GPGAuthMgr::DoOwnSignature() Error Adding Signer"; std::cerr << std::endl; } gpgme_data_t gpgmeData; gpgme_data_t gpgmeSig; if (GPG_ERR_NO_ERROR != gpgme_data_new_from_mem(&gpgmeData, (const char *) data, datalen, 1)) { std::cerr << "Error create Data"; std::cerr << std::endl; } if (GPG_ERR_NO_ERROR != gpgme_data_new(&gpgmeSig)) { std::cerr << "Error create Sig"; std::cerr << std::endl; } /* move string data to gpgmeData */ gpgme_set_armor (CTX, 0); gpgme_sig_mode_t mode = GPGME_SIG_MODE_DETACH; gpg_error_t ERR; if (GPG_ERR_NO_ERROR != (ERR = gpgme_op_sign(CTX,gpgmeData, gpgmeSig, mode))) { ProcessPGPmeError(ERR); std::cerr << "GPGAuthMgr::Sign FAILED ERR: " << ERR; std::cerr << std::endl; } gpgme_sign_result_t res = gpgme_op_sign_result(CTX); if (res) { fprintf(stderr, "Sign Got Result\n"); } else { fprintf(stderr, "Sign Failed to get Result\n"); } gpgme_invalid_key_t ik = res->invalid_signers; gpgme_new_signature_t sg = res->signatures; while(ik != NULL) { fprintf(stderr, "GPGAuthMgr::Sign, Invalid by: %s\n", ik->fpr); ik = ik->next; } while(sg != NULL) { fprintf(stderr, "GPGAuthMgr::Signed by: %s\n", sg->fpr); sg = sg->next; } /* now extract the data from gpgmeSig */ size_t len = 0; int len2 = len; char *export_sig = gpgme_data_release_and_get_mem(gpgmeSig, &len); fprintf(stderr, "GPGAuthMgr::Signature len: %d \n", len2); if (len < *outl) { *outl = len; } memmove(buf_sigout, export_sig, *outl); gpgme_free(export_sig); gpgme_data_release (gpgmeData); /* extract id(s)! */ return true; } /* import to GnuPG and other Certificates */ bool GPGAuthMgr::VerifySignature_locked(std::string id, void *data, int datalen, void *sig, unsigned int siglen) { gpgme_data_t gpgmeSig; gpgme_data_t gpgmeData; std::cerr << "VerifySignature: datalen: " << datalen << " siglen: " << siglen; std::cerr << std::endl; if (GPG_ERR_NO_ERROR != gpgme_data_new_from_mem(&gpgmeData, (const char *) data, datalen, 1)) { std::cerr << "Error create Data"; std::cerr << std::endl; } if (GPG_ERR_NO_ERROR != gpgme_data_new_from_mem(&gpgmeSig, (const char *) sig, siglen, 1)) { std::cerr << "Error create Sig"; std::cerr << std::endl; } /* move string data to gpgmeData */ gpgme_set_armor (CTX, 0); gpgme_error_t ERR; if (GPG_ERR_NO_ERROR != (ERR = gpgme_op_verify(CTX,gpgmeSig, gpgmeData, NULL))) { ProcessPGPmeError(ERR); std::cerr << "GPGAuthMgr::Verify FAILED"; std::cerr << std::endl; } gpgme_verify_result_t res = gpgme_op_verify_result(CTX); if (res) { fprintf(stderr, "VerifySignature Got Result\n"); } else { fprintf(stderr, "VerifySignature Failed to get Result\n"); } gpgme_signature_t sg = res->signatures; bool valid = false; while(sg != NULL) { fprintf(stderr, "GPGAuthMgr::Verify Sig by: %s, Result: %d\n", sg->fpr, sg->summary); print_pgpme_verify_summary(sg->summary); if (sg->summary & GPGME_SIGSUM_VALID) { fprintf(stderr, "GPGAuthMgr::VerifySignature() OK\n"); valid = true; } sg = sg->next; } gpgme_data_release (gpgmeData); gpgme_data_release (gpgmeSig); /* extract id(s)! */ if (!valid) { fprintf(stderr, "GPGAuthMgr::VerifySignature() FAILED\n"); } return valid; } bool GPGAuthMgr::active() { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ return ((gpgmeInit) && (gpgmeKeySelected) && (gpgmeX509Selected)); } int GPGAuthMgr::InitAuth(const char *srvr_cert, const char *priv_key, const char *passwd) { /* Initialise the SSL part */ if (AuthSSL::InitAuth(srvr_cert, priv_key, passwd)) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ gpgmeX509Selected = true; return 1; } return 0; } bool GPGAuthMgr::CloseAuth() { return true; } #if 0 /**** no saving here! let AuthSSL store directories! ****/ int GPGAuthMgr::setConfigDirectories(std::string confFile, std::string neighDir) { return 1; } #endif /**** The standard versions of the OwnId/get*List ... return SSL ids * There are alternative functions for gpg ids. ****/ std::string GPGAuthMgr::OwnId() { /* to the external libretroshare world, we are our SSL id */ return AuthSSL::OwnId(); } bool GPGAuthMgr::getAllList(std::list &ids) { /* get all of the certificates */ return AuthSSL::getAllList(ids); } bool GPGAuthMgr::getAuthenticatedList(std::list &ids) { return AuthSSL::getAuthenticatedList(ids); } bool GPGAuthMgr::getUnknownList(std::list &ids) { return AuthSSL::getUnknownList(ids); } /*******************************/ bool GPGAuthMgr::isValid(std::string id) { return AuthSSL::isValid(id); } bool GPGAuthMgr::isAuthenticated(std::string id) { /* This must be handled at PGP level */ /* get pgpid */ std::string pgpid = getIssuerName(id); return isPGPAuthenticated(pgpid); //return AuthSSL::isAuthenticated(id); } bool GPGAuthMgr::isTrustingMe(std::string) { return false; } void GPGAuthMgr::addTrustingPeer(std::string) { } /**** These Two are common */ std::string GPGAuthMgr::getName(std::string id) { std::string name = AuthSSL::getName(id); if (name != "") { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; if (mKeyList.end() != (it = mKeyList.find(id))) { return it->second.user.name; } } return name; } bool GPGAuthMgr::getDetails(std::string id, pqiAuthDetails &details) { /**** GPG Details. * Ids are the SSL id cert ids, so we have to get issuer id (pgpid) * before we can add any gpg details ****/ #ifdef AUTHGPG_DEBUG std::cerr << "GPGAuthMgr::getDetails() \"" << id << "\""; std::cerr << std::endl; #endif if (AuthSSL::getDetails(id, details)) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; if (mKeyList.end() != (it = mKeyList.find(details.issuer))) { /* what do we want from the gpg mgr */ details.location = details.name; details.name = it->second.user.name; details.email = it->second.user.email; //details = it->second.user; return true; } return true; } else { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* if we cannot find a ssl cert - might be a pgp cert */ certmap::iterator it; if (mKeyList.end() != (it = mKeyList.find(id))) { /* what do we want from the gpg mgr */ details = it->second.user; return true; } } return false; } /**** GPG versions ***/ std::string GPGAuthMgr::PGPOwnId() { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ return mOwnId; } bool GPGAuthMgr::getPGPAllList(std::list &ids) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* add an id for each pgp certificate */ certmap::iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { ids.push_back(it->first); } return true; } bool GPGAuthMgr::getPGPAuthenticatedList(std::list &ids) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { if (it->second.user.trusted) { ids.push_back(it->first); } } return true; } bool GPGAuthMgr::getPGPUnknownList(std::list &ids) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; for(it = mKeyList.begin(); it != mKeyList.end(); it++) { if (!(it->second.user.trusted)) { ids.push_back(it->first); } } return true; } bool GPGAuthMgr::isPGPValid(std::string id) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; return (mKeyList.end() != mKeyList.find(id)); } bool GPGAuthMgr::isPGPAuthenticated(std::string id) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ certmap::iterator it; if (mKeyList.end() != (it = mKeyList.find(id))) { /* trustLvl... is just that ... we are interested in validity. * which is the 'trusted' flag. */ return (it->second.user.trusted); } return false; } /****** Large Parts of the p3AuthMgr is provided by AuthSSL ****** * As the majority of functions require SSL Certs * * We don't need to save/load openpgp certificates, as the gpgme * handles this. * */ #if 0 bool GPGAuthMgr::FinalSaveCertificates() { return false; } bool GPGAuthMgr::CheckSaveCertificates() { return false; } bool GPGAuthMgr::saveCertificates() { return false; } bool GPGAuthMgr::loadCertificates() { return false; } #endif /***************************************************************** * Loading and Saving Certificates - this has to * be able to handle both openpgp and X509 certificates. * * X509 are passed onto AuthSSL, OpenPGP are passed to gpgme. * */ /* SKTAN : do not know how to use std::string id */ std::string GPGAuthMgr::SaveCertificateToString(std::string id) { if (!isPGPValid(id)) { std::cerr << "GPGAuthMgr::SaveCertificateToString() Id is Not PGP" << std::endl; /* check if it is a SSL Certificate */ if (isValid(id)) { std::cerr << "GPGAuthMgr::SaveCertificateToString() is SSLID!" << std::endl; std::string sslcert = AuthSSL::SaveCertificateToString(id); return sslcert; } std::cerr << "GPGAuthMgr::SaveCertificateToString() unknown ID" << std::endl; std::string emptystr; return emptystr; } RsStackMutex stack(pgpMtx); /******* LOCKED ******/ std::string tmp; const char *pattern[] = { NULL, NULL }; pattern[0] = id.c_str(); gpgme_data_t gpgmeData; if (GPG_ERR_NO_ERROR != gpgme_data_new (&gpgmeData)) { std::cerr << "Error create Data"; std::cerr << std::endl; } gpgme_set_armor (CTX, 1); if (GPG_ERR_NO_ERROR != gpgme_op_export_ext (CTX, pattern, 0, gpgmeData)) { std::cerr << "Error export Data"; std::cerr << std::endl; } gpgme_data_write (gpgmeData, "", 1); // to be able to convert it into a string fflush (NULL); fputs ("Begin Result:\n", stdout); showData (gpgmeData); fputs ("End Result.\n", stdout); size_t len = 0; char *export_txt = gpgme_data_release_and_get_mem(gpgmeData, &len); tmp = std::string(export_txt); std::cerr << "Exported Certificate: "; std::cerr << std::endl; std::cerr << tmp; std::cerr << std::endl; gpgme_free(export_txt); return tmp; } /* import to GnuPG and other Certificates */ bool GPGAuthMgr::LoadCertificateFromString(std::string str, std::string &id) { /* catch SSL Certs and pass to AuthSSL. */ std::string sslmarker("-----BEGIN CERTIFICATE-----"); size_t pos = str.find(sslmarker); if (pos != std::string::npos) { return AuthSSL::LoadCertificateFromString(str, id); } /* otherwise assume it is a PGP cert */ RsStackMutex stack(pgpMtx); /******* LOCKED ******/ gpgme_data_t gpgmeData; if (GPG_ERR_NO_ERROR != gpgme_data_new_from_mem(&gpgmeData, str.c_str(), str.length(), 1)) { std::cerr << "Error create Data"; std::cerr << std::endl; } /* move string data to gpgmeData */ gpgme_set_armor (CTX, 1); if (GPG_ERR_NO_ERROR != gpgme_op_import (CTX,gpgmeData)) { std::cerr << "GPGAuthMgr::Error Importing Certificate"; std::cerr << std::endl; } gpgme_import_result_t res = gpgme_op_import_result(CTX); int imported = res->imported; fprintf(stderr, "ImportCertificate(Considered: %d Imported: %d)\n", res->considered, res->imported); /* do we need to delete res??? */ gpgme_data_release (gpgmeData); /* extract id(s)! (only if we actually imported one) */ if (imported) { storeAllKeys_locked(); } return true; } /*** These are passed to SSL ****/ bool GPGAuthMgr::LoadCertificateFromFile(std::string filename, std::string &id) { return false; } bool GPGAuthMgr::SaveCertificateToFile(std::string id, std::string filename) { return false; } bool GPGAuthMgr::LoadCertificateFromBinary(const uint8_t *ptr, uint32_t len, std::string &id) { return AuthSSL::LoadCertificateFromBinary(ptr, len, id); } bool GPGAuthMgr::SaveCertificateToBinary(std::string id, uint8_t **ptr, uint32_t *len) { return AuthSSL::SaveCertificateToBinary(id, ptr, len); } /***************************************************************** * Auth...? Signing, Revoke, Trust are all done at * the PGP level.... * * Only Signing of SSL is done at setup. * Auth should be done... ?? not sure * maybe * */ /*************************************/ /* Auth takes SSL Certificate */ bool GPGAuthMgr::AuthCertificate(std::string id) { /** * we are passed an SSL cert, check if the cert is signed * by an already authed peer. **/ std::cerr << "GPGAuthMgr::AuthCertificate(" << id << ")"; std::cerr << std::endl; std::string pgpid = AuthSSL::getIssuerName(id); if (isPGPAuthenticated(pgpid)) { return true; } if (!isPGPValid(pgpid)) { return false; } return SignCertificate(pgpid); } /* These take PGP Ids */ bool GPGAuthMgr::SignCertificate(std::string id) { std::cerr << "GPGAuthMgr::SignCertificate(" << id << ")"; std::cerr << std::endl; if (1 != signCertificate(id)) { return false; } /* reload stuff now ... */ RsStackMutex stack(pgpMtx); /******* LOCKED ******/ storeAllKeys_locked(); return true; } bool GPGAuthMgr::RevokeCertificate(std::string id) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ std::cerr << "GPGAuthMgr::RevokeCertificate(" << id << ")"; std::cerr << std::endl; return false; } bool GPGAuthMgr::TrustCertificate(std::string id, bool trust) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ std::cerr << "GPGAuthMgr::TrustCertificate(" << id << "," << trust << ")"; std::cerr << std::endl; return false; } /***************************************************************** * Signing data is done by the SSL certificate. * */ #if 0 bool GPGAuthMgr::SignData(std::string input, std::string &sign) { return false; } bool GPGAuthMgr::SignData(const void *data, const uint32_t len, std::string &sign) { return false; } bool GPGAuthMgr::SignDataBin(std::string input, unsigned char *sign, unsigned int *signlen) { return false; } bool GPGAuthMgr::SignDataBin(const void *data, const uint32_t len, unsigned char *sign, unsigned int *signlen) { return false; } #endif /************* Virtual Functions from AuthSSL *************/ bool GPGAuthMgr::ValidateCertificate(X509 *x509, std::string &peerId) { std::cerr << "GPGAuthMgr::ValidateCertificate()"; std::cerr << std::endl; bool val = AuthX509(x509); if (val) { return getX509id(x509, peerId); } /* be sure to get the id anyway */ getX509id(x509, peerId); return false; } int GPGAuthMgr::VerifyX509Callback(int preverify_ok, X509_STORE_CTX *ctx) { char buf[256]; X509 *err_cert; int err, depth; err_cert = X509_STORE_CTX_get_current_cert(ctx); err = X509_STORE_CTX_get_error(ctx); depth = X509_STORE_CTX_get_error_depth(ctx); std::cerr << "GPGAuthMgr::VerifyX509Callback(preverify_ok: " << preverify_ok << " Err: " << err << " Depth: " << depth; std::cerr << std::endl; /* * Retrieve the pointer to the SSL of the connection currently treated * and the application specific data stored into the SSL object. */ X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256); std::cerr << "GPGAuthMgr::VerifyX509Callback: depth: " << depth << ":" << buf; std::cerr << std::endl; if (!preverify_ok) { fprintf(stderr, "Verify error:num=%d:%s:depth=%d:%s\n", err, X509_verify_cert_error_string(err), depth, buf); } /* * At this point, err contains the last verification error. We can use * it for something special */ if (!preverify_ok) { if ((err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT) || (err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY)) { X509_NAME_oneline(X509_get_issuer_name(X509_STORE_CTX_get_current_cert(ctx)), buf, 256); printf("issuer= %s\n", buf); fprintf(stderr, "Doing REAL PGP Certificates\n"); /* do the REAL Authentication */ if (!AuthX509(X509_STORE_CTX_get_current_cert(ctx))) { return false; } std::string pgpid = getX509CNString(X509_STORE_CTX_get_current_cert(ctx)->cert_info->issuer); if (!isPGPAuthenticated(pgpid)) { return false; } preverify_ok = true; } else if ((err == X509_V_ERR_CERT_UNTRUSTED) || (err == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE)) { std::string pgpid = getX509CNString(X509_STORE_CTX_get_current_cert(ctx)->cert_info->issuer); if (!isPGPAuthenticated(pgpid)) { return false; } preverify_ok = true; } } else { fprintf(stderr, "Failing Normal Certificate!!!\n"); preverify_ok = false; } return preverify_ok; } /************* Virtual Functions from AuthSSL *************/ /* Sign/Trust stuff */ int GPGAuthMgr::signCertificate(std::string id) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* The key should be in Others list and not in Peers list ?? * Once the key is signed, it moves from Others to Peers list ??? */ certmap::iterator it; if (mKeyList.end() == (it = mKeyList.find(id))) { return false; } gpgme_key_t signKey = it->second.key; gpgme_key_t ownKey = mOwnGpgCert.key; class SignParams sparams("0", passphrase); class EditParams params(SIGN_START, &sparams); gpgme_data_t out; gpg_error_t ERR; if(GPG_ERR_NO_ERROR != (ERR = gpgme_data_new(&out))) { return 0; } gpgme_signers_clear(CTX); if(GPG_ERR_NO_ERROR != (ERR = gpgme_signers_add(CTX, ownKey))) { return 0; } if(GPG_ERR_NO_ERROR != (ERR = gpgme_op_edit(CTX, signKey, keySignCallback, \ ¶ms, out))) { return 0; } /* Should I move the certificate from Others to Peers ??? */ return 1; } /* revoke the signature on Certificate */ int GPGAuthMgr::revokeCertificate(std::string id) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ return 0; } int GPGAuthMgr::trustCertificate(std::string id, int trustlvl) { RsStackMutex stack(pgpMtx); /******* LOCKED ******/ /* The certificate should be in Peers list ??? */ if(!isAuthenticated(id)) { std::cerr << "Invalid Certificate" << std::endl; return 0; } gpgcert trustCert = mKeyList.find(id)->second; gpgme_key_t trustKey = trustCert.key; const char *lvls[] = {"1", "2", "3", "4", "5"}; class EditParams params(TRUST_START, (void *) *(lvls + trustlvl -1)); gpgme_data_t out; gpg_error_t ERR; if(GPG_ERR_NO_ERROR != (ERR = gpgme_data_new(&out))) { return 0; } if(GPG_ERR_NO_ERROR != (ERR = gpgme_op_edit(CTX, trustKey, trustCallback, ¶ms, out))) return 0; return 1; } /* This function to print Data */ void GPGAuthMgr::showData(gpgme_data_t dh) { #define BUF_SIZE 512 char buf[BUF_SIZE + 1]; int ret; ret = gpgme_data_seek (dh, 0, SEEK_SET); if (ret) { std::cerr << "Fail data seek"; std::cerr << std::endl; // fail_if_err (gpgme_err_code_from_errno (errno)); } while ((ret = gpgme_data_read (dh, buf, BUF_SIZE)) > 0) fwrite (buf, ret, 1, stdout); if (ret < 0) { std::cerr << "Fail data seek"; std::cerr << std::endl; //fail_if_err (gpgme_err_code_from_errno (errno)); } } /******************************************************************************/ /* TEST/DEBUG */ /******************************************************************************/ /* * Create a number of friends and add them to the Map of peers. * Create a number of friends and add them to the Map of "others" -- people who * are known but are not allowed to access retroshare */ void GPGAuthMgr::createDummyFriends() { const unsigned int DUMMY_KEY_LEN = 2048; // create key params for a few dummies std::string friend1 = setKeyPairParams(true, DUMMY_KEY_LEN, "friend89", "I am your first friend", "friend1@friend.com", "1234"); std::string friend2 = setKeyPairParams(true, DUMMY_KEY_LEN, "friend2", "I am your second friend", "friend2@friend.com", "2345"); std::string friend3 = setKeyPairParams(true, DUMMY_KEY_LEN, "friend3", "I am your third friend", "friend3@friend.com", "3456"); // params for others std::string other1 = setKeyPairParams(true, DUMMY_KEY_LEN, "other89", "I am your first other", "other@other.com", "1234"); std::string other2 = setKeyPairParams(true, DUMMY_KEY_LEN, "other2", "I am your second other", "other2@other.com", "2345"); std::string other3 = setKeyPairParams(true, DUMMY_KEY_LEN, "other3", "I am your third other", "other3@other.com", "3456"); gpgme_error_t rc = GPG_ERR_NO_ERROR; // assume OK rc = gpgme_op_genkey(CTX, friend1.c_str(), NULL, NULL); rc = gpgme_op_genkey(CTX, friend2.c_str(), NULL, NULL); rc = gpgme_op_genkey(CTX, friend3.c_str(), NULL, NULL); rc = gpgme_op_genkey(CTX, other1.c_str(), NULL, NULL); rc = gpgme_op_genkey(CTX, other2.c_str(), NULL, NULL); rc = gpgme_op_genkey(CTX, other3.c_str(), NULL, NULL); std::cout << "createDummyFriends(): exit" << std::endl; return; } static std::string setKeyPairParams(bool useRsa, unsigned int blen, std::string name, std::string comment, std::string email, std::string inPassphrase) { std::ostringstream params; params << ""<< std::endl; if (useRsa) { params << "Key-Type: RSA"<< std::endl; if (blen < 1024) { std::cerr << "Weak Key... strengthing..."<< std::endl; blen = 1024; } blen = ((blen / 512) * 512); /* make multiple of 512 */ params << "Key-Length: "<< blen << std::endl; } else { params << "Key-Type: DSA"<< std::endl; params << "Key-Length: 1024"<< std::endl; params << "Subkey-Type: ELG-E"<< std::endl; params << "Subkey-Length: 1024"<< std::endl; } params << "Name-Real: "<< name << std::endl; params << "Name-Comment: "<< comment << std::endl; params << "Name-Email: "<< email << std::endl; params << "Expire-Date: 0"<< std::endl; params << "Passphrase: "<< inPassphrase << std::endl; params << ""<< std::endl; return params.str(); } /* Author: Shiva * This function returns the key macthing the user parameters * from the keyring */ static gpgme_key_t getKey(gpgme_ctx_t CTX, std::string name, std::string comment, std::string email) { gpgme_key_t key; gpgme_user_id_t user; /* Initiates a key listing */ if (GPG_ERR_NO_ERROR != gpgme_op_keylist_start (CTX, "", 0)) { std::cerr << "Error iterating through KeyList"; std::cerr << std::endl; return false; } /* Loop until end of key */ for(int i = 0;(GPG_ERR_NO_ERROR == gpgme_op_keylist_next (CTX, &key)); i++) { user = key->uids; while(user != NULL) { if((name.size() && name == user->name) && (comment.size() && comment == user->comment) && \ (email.size() && email == user->email)) { /* grab a reference to the key */ gpgme_op_keylist_end(CTX); if (GPG_ERR_NO_ERROR != gpgme_op_keylist_end(CTX)) { std::cerr << "Error ending KeyList"; std::cerr << std::endl; } gpgme_key_ref(key); return key; } user = user->next; } } if (GPG_ERR_NO_ERROR != gpgme_op_keylist_end(CTX)) { std::cerr << "Error ending KeyList"; std::cerr << std::endl; } return NULL; } /* Callback function for key signing */ static gpg_error_t keySignCallback(void *opaque, gpgme_status_code_t status, \ const char *args, int fd) { class EditParams *params = (class EditParams *)opaque; class SignParams *sparams = (class SignParams *)params->oParams; const char *result = NULL; fprintf(stderr,"keySignCallback status: %d args: %s, params->state: %d\n", status, args, params->state); /* printf stuff out */ if (status == GPGME_STATUS_EOF) fprintf(stderr,"keySignCallback GPGME_STATUS_EOF\n"); if (status == GPGME_STATUS_GOT_IT) fprintf(stderr,"keySignCallback GPGME_STATUS_GOT_IT\n"); if (status == GPGME_STATUS_USERID_HINT) fprintf(stderr,"keySignCallback GPGME_STATUS_USERID_HINT\n"); if (status == GPGME_STATUS_NEED_PASSPHRASE) fprintf(stderr,"keySignCallback GPGME_STATUS_NEED_PASSPHRASE\n"); if (status == GPGME_STATUS_GOOD_PASSPHRASE) fprintf(stderr,"keySignCallback GPGME_STATUS_GOOD_PASSPHRASE\n"); if (status == GPGME_STATUS_BAD_PASSPHRASE) fprintf(stderr,"keySignCallback GPGME_STATUS_BAD_PASSPHRASE\n"); if (status == GPGME_STATUS_GET_LINE) fprintf(stderr,"keySignCallback GPGME_STATUS_GET_LINE\n"); if (status == GPGME_STATUS_GET_BOOL) fprintf(stderr,"keySignCallback GPGME_STATUS_GET_BOOL\n"); if (status == GPGME_STATUS_ALREADY_SIGNED) fprintf(stderr,"keySignCallback GPGME_STATUS_ALREADY_SIGNED\n"); if(status == GPGME_STATUS_EOF || status == GPGME_STATUS_GOT_IT || status == GPGME_STATUS_USERID_HINT || status == GPGME_STATUS_NEED_PASSPHRASE || // status == GPGME_STATUS_GOOD_PASSPHRASE || status == GPGME_STATUS_BAD_PASSPHRASE) { fprintf(stderr,"keySignCallback Error status\n"); ProcessPGPmeError(params->err); return params->err; } switch (params->state) { case SIGN_START: fprintf(stderr,"keySignCallback SIGN_START\n"); if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { params->state = SIGN_COMMAND; result = "sign"; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_COMMAND: fprintf(stderr,"keySignCallback SIGN_COMMAND\n"); if (status == GPGME_STATUS_GET_BOOL && (!std::string("keyedit.sign_all.okay").compare(args))) { params->state = SIGN_UIDS; result = "Y"; } else if (status == GPGME_STATUS_GET_BOOL && (!std::string("sign_uid.okay").compare(args))) { params->state = SIGN_ENTER_PASSPHRASE; result = "Y"; } else if (status == GPGME_STATUS_GET_LINE && (!std::string("sign_uid.expire").compare(args))) { params->state = SIGN_SET_EXPIRE; result = "Y"; } else if (status == GPGME_STATUS_GET_LINE && (!std::string("sign_uid.class").compare(args))) { params->state = SIGN_SET_CHECK_LEVEL; result = sparams->checkLvl.c_str(); } else if (status == GPGME_STATUS_ALREADY_SIGNED) { /* The key has already been signed with this key */ params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_CONFLICT); } else if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { /* Failed sign: expired key */ params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_UNUSABLE_PUBKEY); } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_UIDS: fprintf(stderr,"keySignCallback SIGN_UIDS\n"); if (status == GPGME_STATUS_GET_LINE && (!std::string("sign_uid.expire").compare(args))) { params->state = SIGN_SET_EXPIRE; result = "Y"; } else if (status == GPGME_STATUS_GET_LINE && (!std::string("sign_uid.class").compare(args))) { params->state = SIGN_SET_CHECK_LEVEL; result = sparams->checkLvl.c_str(); } else if (status == GPGME_STATUS_GET_BOOL && (!std::string("sign_uid.okay").compare(args))) { params->state = SIGN_ENTER_PASSPHRASE; result = "Y"; } else if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { /* Failed sign: expired key */ params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_UNUSABLE_PUBKEY); } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_SET_EXPIRE: fprintf(stderr,"keySignCallback SIGN_SET_EXPIRE\n"); if (status == GPGME_STATUS_GET_LINE && (!std::string("sign_uid.class").compare(args))) { params->state = SIGN_SET_CHECK_LEVEL; result = sparams->checkLvl.c_str(); } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_SET_CHECK_LEVEL: fprintf(stderr,"keySignCallback SIGN_SET_CHECK_LEVEL\n"); if (status == GPGME_STATUS_GET_BOOL && (!std::string("sign_uid.okay").compare(args))) { params->state = SIGN_ENTER_PASSPHRASE; result = "Y"; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_ENTER_PASSPHRASE: fprintf(stderr,"keySignCallback SIGN_ENTER_PASSPHRASE\n"); if(status == GPGME_STATUS_GET_HIDDEN && (!std::string("passphrase.enter").compare(args))) { params->state = SIGN_CONFIRM; result = sparams->passphrase.c_str(); } // If using pgp_pwd_callback, then never have to enter passphrase this way. // must catch GOOD_PASSPHRASE to move on. else if (status == GPGME_STATUS_GOOD_PASSPHRASE) { params->state = SIGN_CONFIRM; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_CONFIRM: fprintf(stderr,"keySignCallback SIGN_CONFIRM\n"); if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { params->state = SIGN_QUIT; result = "quit"; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_QUIT: fprintf(stderr,"keySignCallback SIGN_QUIT\n"); if (status == GPGME_STATUS_GET_BOOL && (!std::string("keyedit.save.okay").compare(args))) { params->state = SIGN_SAVE; result = "Y"; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case SIGN_ERROR: fprintf(stderr,"keySignCallback SIGN_ERROR\n"); if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { /* Go to quit operation state */ params->state = SIGN_QUIT; result = "quit"; } else { params->state = SIGN_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; default: fprintf(stderr,"keySignCallback UNKNOWN state\n"); break; } if (result) { fprintf(stderr,"keySignCallback result:%s\n", result); #ifndef WINDOWS_SYS if (*result) write (fd, result, strlen (result)); write (fd, "\n", 1); #else DWORD written = 0; HANDLE winFd = (HANDLE) fd; if (*result) WriteFile(winFd, result, strlen(result), &written, NULL); WriteFile(winFd, "\n", 1, &written, NULL); #endif } fprintf(stderr,"keySignCallback Error status\n"); ProcessPGPmeError(params->err); return params->err; } /* Callback function for assigning trust level */ static gpgme_error_t trustCallback(void *opaque, gpgme_status_code_t status, \ const char *args, int fd) { class EditParams *params = (class EditParams *)opaque; const char *result = NULL; char *trustLvl = (char *)params->oParams; if(status == GPGME_STATUS_EOF || status == GPGME_STATUS_GOT_IT) { return params->err; } switch (params->state) { case TRUST_START: if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { params->state = TRUST_COMMAND; result = "trust"; } else { params->state = TRUST_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case TRUST_COMMAND: if (status == GPGME_STATUS_GET_LINE && (!std::string("edit_ownertrust.value").compare(args))) { params->state = TRUST_VALUE; result = trustLvl; } else { params->state = TRUST_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case TRUST_VALUE: if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { params->state = TRUST_QUIT; result = "quit"; } else if (status == GPGME_STATUS_GET_BOOL && (!std::string("edit_ownertrust.set_ultimate.okay").compare(args))) { params->state = TRUST_REALLY_ULTIMATE; result = "Y"; } else { params->state = TRUST_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case TRUST_REALLY_ULTIMATE: if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { params->state = TRUST_QUIT; result = "quit"; } else { params->state = TRUST_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case TRUST_QUIT: if (status == GPGME_STATUS_GET_BOOL && (!std::string("keyedit.save.okay").compare(args))) { params->state = TRUST_SAVE; result = "Y"; } else { params->state = TRUST_ERROR; params->err = gpg_error (GPG_ERR_GENERAL); } break; case TRUST_ERROR: if (status == GPGME_STATUS_GET_LINE && (!std::string("keyedit.prompt").compare(args))) { /* Go to quit operation state */ params->state = TRUST_QUIT; result = "quit"; } else { params->state = TRUST_ERROR; } break; } if (result) { #ifndef WINDOWS_SYS if (*result) write (fd, result, strlen (result)); write (fd, "\n", 1); #else DWORD written = 0; HANDLE winFd = (HANDLE) fd; if (*result) WriteFile(winFd, result, strlen (result), &written, NULL); WriteFile(winFd, "\n", 1, &written, NULL); #endif } return params->err; }