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RRTcodebaseC

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void dc_pgp_init(void)
{
if (s_io_initialized) {
return;
}
memset(&s_io, 0, sizeof(pgp_io_t));
s_io.outs = stdout;
s_io.errs = stderr;
s_io.res = stderr;
s_io_initialized = 1;
}
#endif // !DC_USE_RPGP
void dc_pgp_exit(void)
{
}
#ifdef DC_USE_RPGP
void dc_pgp_rand_seed(dc_context_t* context, const void* buf, size_t bytes) {}
#else // !DC_USE_RPGP
void dc_pgp_rand_seed(dc_context_t* context, const void* buf, size_t bytes)
{
if (buf==NULL || bytes<=0) {
return;
}
RAND_seed(buf, bytes);
}
#endif // !DC_USE_RPGP
/* Split data from PGP Armored Data as defined in https://tools.ietf.org/html/rfc4880#section-6.2.
The given buffer is modified and the returned pointers just point inside the modified buffer,
no additional data to free therefore.
(NB: netpgp allows only parsing of Version, Comment, MessageID, Hash and Charset) */
int dc_split_armored_data(char* buf, const char** ret_headerline, const char** ret_setupcodebegin, const char** ret_preferencrypt, const char** ret_base64)
{
int success = 0;
size_t line_chars = 0;
char* line = buf;
char* p1 = buf;
char* p2 = NULL;
char* headerline = NULL;
char* base64 = NULL;
#define PGP_WS "\t\r\n "
if (ret_headerline) { *ret_headerline = NULL; }
if (ret_setupcodebegin) { *ret_setupcodebegin = NULL; }
if (ret_preferencrypt) { *ret_preferencrypt = NULL; }
if (ret_base64) { *ret_base64 = NULL; }
if (buf==NULL || ret_headerline==NULL) {
goto cleanup;
}
dc_remove_cr_chars(buf);
while (*p1) {
if (*p1=='\n') {
/* line found ... */
line[line_chars] = 0;
if (headerline==NULL) {
/* ... headerline */
dc_trim(line);
if (strncmp(line, "-----BEGIN ", 11)==0 && strncmp(&line[strlen(line)-5], "-----", 5)==0) {
headerline = line;
if (ret_headerline) {
*ret_headerline = headerline;
}
}
}
else if (strspn(line, PGP_WS)==strlen(line)) {
/* ... empty line: base64 starts on next line */
base64 = p1+1;
break;
}
else if ((p2=strchr(line, ':'))==NULL) {
/* ... non-standard-header without empty line: base64 starts with this line */
line[line_chars] = '\n';
base64 = line;
break;
}
else {
/* header line */
*p2 = 0;
dc_trim(line);
if (strcasecmp(line, "Passphrase-Begin")==0) {
p2++;
dc_trim(p2);
if (ret_setupcodebegin) {
*ret_setupcodebegin = p2;
}