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RRTcodebaseC

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int dc_keyring_load_self_private_for_decrypting(dc_keyring_t* keyring, const char* self_addr, dc_sqlite3_t* sql)
{
if (keyring==NULL || self_addr==NULL || sql==NULL) {
return 0;
}
sqlite3_stmt* stmt = dc_sqlite3_prepare(sql,
"SELECT private_key FROM keypairs ORDER BY addr=? DESC, is_default DESC;");
sqlite3_bind_text (stmt, 1, self_addr, -1, SQLITE_STATIC);
while (sqlite3_step(stmt) == SQLITE_ROW) {
dc_key_t* key = dc_key_new();
if (dc_key_set_from_stmt(key, stmt, 0, DC_KEY_PRIVATE)) {
dc_keyring_add(keyring, key);
}
dc_key_unref(key); /* unref in any case, dc_keyring_add() adds its own reference */
}
sqlite3_finalize(stmt);
return 1;
}
```
Filename: dc_location.c
```c
#include "dc_context.h"
#include "dc_saxparser.h"
#include "dc_mimefactory.h"
/*******************************************************************************
* create kml-files
******************************************************************************/
static char* get_kml_timestamp(time_t utc)
{
// Returns a string formatted as YYYY-MM-DDTHH:MM:SSZ. The trailing `Z` indicates UTC.
struct tm wanted_struct;
memcpy(&wanted_struct, gmtime(&utc), sizeof(struct tm));
return dc_mprintf("%04i-%02i-%02iT%02i:%02i:%02iZ",
(int)wanted_struct.tm_year+1900, (int)wanted_struct.tm_mon+1, (int)wanted_struct.tm_mday,
(int)wanted_struct.tm_hour, (int)wanted_struct.tm_min, (int)wanted_struct.tm_sec);
}
char* dc_get_location_kml(dc_context_t* context, uint32_t chat_id,
uint32_t* last_added_location_id)
{
int success = 0;
sqlite3_stmt* stmt = NULL;
char* self_addr = NULL;
time_t now = time(NULL);
time_t locations_send_begin = 0;
time_t locations_send_until = 0;
time_t locations_last_sent = 0;
int location_count = 0;
dc_strbuilder_t ret;
dc_strbuilder_init(&ret, 1000);
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC) {
goto cleanup;
}
// get info about the contact and the chat
self_addr = dc_sqlite3_get_config(context->sql, "configured_addr", "");
stmt = dc_sqlite3_prepare(context->sql,
"SELECT locations_send_begin, locations_send_until, locations_last_sent"
" FROM chats "
" WHERE id=?;");
sqlite3_bind_int(stmt, 1, chat_id);
if (sqlite3_step(stmt)!=SQLITE_ROW) {
goto cleanup;
}
locations_send_begin = sqlite3_column_int64(stmt, 0);
locations_send_until = sqlite3_column_int64(stmt, 1);
locations_last_sent = sqlite3_column_int64(stmt, 2);
sqlite3_finalize(stmt);
stmt = NULL;
if (locations_send_begin==0 || now>locations_send_until) {
goto cleanup;
}
// build kml file
dc_strbuilder_catf(&ret,
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n"
"<Document addr=\"%s\">\n",
self_addr);
stmt = dc_sqlite3_prepare(context->sql,
"SELECT id, latitude, longitude, accuracy, timestamp "
" FROM locations "
" WHERE from_id=? "
" AND timestamp>=? "
" AND (timestamp>=? OR timestamp=(SELECT MAX(timestamp) FROM locations WHERE from_id=?)) "