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#include "impgp.h"
#ifdef HAVE_GPGME
#include "icqconf.h"
#include "icqface.h"
#include "abstracthook.h"
impgp pgp;
protocolname impgp::opname;
string impgp::passphrase[];
impgp::impgp() {
if(gpgme_new(&ctx))
ctx = 0;
}
impgp::~impgp() {
if(ctx)
gpgme_release(ctx);
}
string impgp::getkeyinfo(const string &fp, bool secret) {
gpgme_key_t key;
string r;
if(ctx && !gpgme_get_key(ctx, fp.c_str(), &key, secret ? 1 : 0)) {
r = key->subkeys->keyid+8;
r += ": ";
r += key->uids->name;
if(key->uids->comment && strlen(key->uids->comment))
r += (string) " (" + key->uids->comment + ")";
if(key->uids->email && strlen(key->uids->email))
r += (string) " <" + key->uids->email + ">";
gpgme_key_release(key);
}
return r;
}
vector<string> impgp::getkeys(bool secretonly) {
gpgme_key_t key;
vector<string> r;
if(ctx) {
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
if(!gpgme_op_keylist_start(ctx, 0, secretonly ? 1 : 0)) {
while(!gpgme_op_keylist_next(ctx, &key)) {
r.push_back(key->subkeys->keyid);
gpgme_key_release(key);
}
}
}
return r;
}
gpgme_error_t impgp::passphrase_cb(void *hook, const char *uidhint,
const char *info, int prevbad, int fd) {
if(!prevbad) {
if(passphrase[opname].empty())
passphrase[opname] = conf.getourid(opname).additional["pgppass"];
if(passphrase[opname].empty())
passphrase[opname] = face.inputstr(_("PGP passphrase required: "), "", '*');
} else {
face.log((string) "+ [" + conf.getprotocolname(opname) + "] " + _("incorrect PGP passphrase"));
gethook(opname).disconnect();
return GPG_ERR_CANCELED;
}
write(fd, passphrase[opname].c_str(), passphrase[opname].size());
write(fd, "\n", 1);
return 0;
}
string impgp::sign(const string &text, const string &keyid, protocolname pname) {
gpgme_data_t in, out;
gpgme_key_t key;
string r;
size_t n;
gpgme_error_t err;
if(ctx) {
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
gpgme_set_textmode(ctx, 0);
gpgme_set_armor(ctx, 1);
gpgme_set_passphrase_cb(ctx, &passphrase_cb, 0);
opname = pname;
if(!(err = gpgme_get_key(ctx, keyid.c_str(), &key, 1))) {
gpgme_signers_clear(ctx);
gpgme_signers_add(ctx, key);
if(!(err = gpgme_data_new_from_mem(&in, text.c_str(), text.size(), 0))) {
if(!(err = gpgme_data_new(&out))) {
if(!(err = gpgme_op_sign(ctx, in, out, GPGME_SIG_MODE_DETACH))) {
auto_ptr<char> buf(gpgme_data_release_and_get_mem(out, &n));
auto_ptr<char> p(new char[n+1]);
strncpy(p.get(), buf.get(), n);
p.get()[n] = 0;
r = p.get();
strip(r);
} else {
gpgme_data_release(out);
}
}
gpgme_data_release(in);
}
gpgme_key_release(key);
}
if(err && err != GPG_ERR_CANCELED) {
face.log((string) "+ [" + conf.getprotocolname(pname) + "] " +
_("PGP sign error: ") + gpgme_strerror(err));
gethook(pname).disconnect();
}
}
return r;
}
string impgp::verify(string sign, const string &orig) {
string r;
gpgme_data_t dsign, dorig;
gpgme_key_t key;
gpgme_verify_result_t vr;
if(ctx) {
sign = "-----BEGIN PGP SIGNATURE-----\n\n" + sign + "\n-----END PGP SIGNATURE-----\n";
if(!gpgme_data_new_from_mem(&dsign, sign.c_str(), sign.size(), 0)) {
if(!gpgme_data_new_from_mem(&dorig, orig.c_str(), orig.size(), 0)) {
if(!gpgme_op_verify(ctx, dsign, dorig, 0)) {
if(vr = gpgme_op_verify_result(ctx)) {
if(vr->signatures) {
r = vr->signatures->fpr;
if(!gpgme_get_key(ctx, r.c_str(), &key, 0)) {
r = key->subkeys->keyid;
gpgme_key_release(key);
}
}
}
}
gpgme_data_release(dorig);
}
gpgme_data_release(dsign);
}
}
return r;
}
string impgp::decrypt(string text, protocolname pname) {
string r;
gpgme_data_t in, out;
gpgme_key_t key;
gpgme_decrypt_result_t dr;
size_t n;
if(ctx) {
text = "-----BEGIN PGP MESSAGE-----\n\n" + text + "\n-----END PGP MESSAGE-----\n";
gpgme_set_passphrase_cb(ctx, &passphrase_cb, 0);
opname = pname;
if(!gpgme_data_new_from_mem(&in, text.c_str(), text.size(), 0)) {
if(!gpgme_data_new(&out)) {
if(!gpgme_op_decrypt(ctx, in, out)) {
if(dr = gpgme_op_decrypt_result(ctx)) {
}
auto_ptr<char> buf(gpgme_data_release_and_get_mem(out, &n));
auto_ptr<char> p(new char[n+1]);
strncpy(p.get(), buf.get(), n);
p.get()[n] = 0;
r = p.get();
} else {
gpgme_data_release(out);
}
}
gpgme_data_release(in);
}
}
return r;
}
string impgp::encrypt(const string &text, const string &keyid, protocolname pname) {
string r;
gpgme_key_t key;
gpgme_data_t in, out;
size_t n;
gpgme_error_t err;
if(ctx) {
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
gpgme_set_textmode(ctx, 0);
gpgme_set_armor(ctx, 1);
if(!(err = gpgme_get_key(ctx, keyid.c_str(), &key, 0))) {
gpgme_key_t keys[] = { key, 0 };
if(!(err = gpgme_data_new_from_mem(&in, text.c_str(), text.size(), 0))) {
if(!(err = gpgme_data_new(&out))) {
if(!(err = gpgme_op_encrypt(ctx, keys, GPGME_ENCRYPT_ALWAYS_TRUST, in, out))) {
auto_ptr<char> p(gpgme_data_release_and_get_mem(out, &n));
r = p.get();
strip(r);
} else {
gpgme_data_release(out);
}
}
gpgme_data_release(in);
}
gpgme_key_release(key);
}
}
if(err && err != GPG_ERR_CANCELED) {
face.log((string) "+ [" + conf.getprotocolname(pname) + "] " +
_("PGP encrypt error: ") + gpgme_strerror(err));
gethook(pname).disconnect();
}
return r;
}
bool impgp::havekey(const string &keyid) const {
gpgme_key_t key;
bool r = !gpgme_get_key(ctx, keyid.c_str(), &key, 0);
if(r) gpgme_key_release(key);
return r;
}
bool impgp::enabled(protocolname pname) const {
return gethook(pname).getCapabs().count(hookcapab::pgp)
&& !conf.getourid(pname).additional["pgpkey"].empty();
}
bool impgp::enabled(const imcontact &ic) const {
bool r = false;
icqcontact *c;
if(c = clist.get(ic))
r = enabled(ic.pname)
&& c->getusepgpkey()
&& !c->getpgpkey().empty()
&& havekey(c->getpgpkey());
return r;
}
void impgp::clearphrase(protocolname p) {
passphrase[p] = "";
}
void impgp::strip(string &r) {
int n;
if((n = r.find("\n\n")) != -1)
r.erase(0, n+2);
if((n = r.rfind("\n")) != -1)
r.erase(n);
if((n = r.rfind("\n")) != -1)
r.erase(n);
}
#endif
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