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XMPP-OX - rpad

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Issue: #12
This commit is contained in:
DebXWoody 2020-06-06 15:23:21 +02:00
parent 1b0f033bfb
commit ecb5697ddb
No known key found for this signature in database
GPG Key ID: C2DC916F35751C24
1 changed files with 33 additions and 6 deletions
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39
src/mode/openpgp.c
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@ -48,12 +48,41 @@
#include <locale.h>
#include <stdlib.h>
#include <glib.h>
#include <time.h>
#include <gpgme.h>
static void _openpgp_send_text(xmppc_t *xmppc, char* to, char* text);
static xmpp_stanza_t* _openpgp_signcrypt(xmppc_t *xmppc, char* to, char* text);
static char* _openpgp_gpg_signcrypt(xmppc_t *xmppc, char* recipient, char* message);
static gpgme_error_t _openpgp_lookup_key(xmppc_t *xmppc, char* name, gpgme_ctx_t* ctx, gpgme_key_t* key);
static char* _generate_rpad();
// RFC-4648 - The Base16, Base32, and Base64 Data Encodings
// https://tools.ietf.org/html/rfc4648#section-4
/** RFC-4648 - The Base 64 Alphabet **/
static const char rfc_4648_base64_alphabet[] = {
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
'Q','R','S','T','V','V','W','X','Y','Z','a','b','c','d','e','f',
'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
};
//static const char rfc_4648_base64_pad = '=';
static unsigned int seed = 0;
char* _generate_rpad() {
if ( !seed) seed = time(NULL);
int size = (rand_r(&seed) % 201) ;
if(size > 0 ) {
char* rpad = malloc( sizeof(char) * (size+1));
rpad[size] = '\0';
for(int i = 0;i < size; i++)
rpad[i] = rfc_4648_base64_alphabet[(rand_r(&seed)%64)];
return rpad;
}
return NULL;
}
void openpgp_execute_command(xmppc_t *xmppc, int argc, char *argv[]) {
if(argc > 0) {
@ -73,6 +102,7 @@ void _openpgp_send_text(xmppc_t *xmppc, char* to, char* text) {
char* id = xmpp_uuid_gen(xmppc->ctx);
message = xmpp_message_new(xmpp_conn_get_context(conn), NULL, to, id);
xmpp_message_set_body(message, "This message is *encrypted* with OpenPGP (See :XEP:`0373`)");
// xmpp_stanza_set_type(message,"chat");
xmpp_stanza_t *openpgp = xmpp_stanza_new(xmppc->ctx);
xmpp_stanza_set_name(openpgp, "openpgp");
xmpp_stanza_set_ns(openpgp, "urn:xmpp:openpgp:0");
@ -104,12 +134,7 @@ xmpp_stanza_t* _openpgp_signcrypt(xmppc_t *xmppc, char* to, char* text) {
struct tm* tm = localtime(&now);
char buf[255];
strftime(buf, sizeof(buf), "%FT%T%z", tm);
int randnr = rand() % 5;
char rpad_data[randnr];
for(int i = 0; i < randnr-1; i++) {
rpad_data[i] = 'c';
}
rpad_data[randnr-1] = '\0';
char* rpad_data = _generate_rpad();
// signcrypt
xmpp_stanza_t *signcrypt = xmpp_stanza_new(xmppc->ctx);
@ -194,6 +219,8 @@ char* _openpgp_gpg_signcrypt(xmppc_t *xmppc, char* recipient, char* message) {
return NULL;
}
gpgme_signers_add (ctx, recp[0]);
error = gpgme_signers_add(ctx,recp[0]);
if(error != 0) {
logError(xmppc,"gpgme_signers_add %s. GpgME Error: %s\n", xmpp_jid_me, gpgme_strerror(error));