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#include "olm/olm.hh"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
ssize_t read_file(
int fd,
uint8_t **buffer
) {
size_t buffer_size = 4096;
uint8_t * current_buffer = (uint8_t *) malloc(buffer_size);
if (current_buffer == NULL) return -1;
size_t buffer_pos = 0;
while (1) {
ssize_t count = read(
fd, current_buffer + buffer_pos, buffer_size - buffer_pos
);
if (count < 0) break;
if (count == 0) {
uint8_t * return_buffer = (uint8_t *) realloc(current_buffer, buffer_pos);
if (return_buffer == NULL) break;
*buffer = return_buffer;
return buffer_pos;
}
buffer_pos += count;
if (buffer_pos == buffer_size) {
buffer_size *= 2;
uint8_t * new_buffer = (uint8_t *) realloc(current_buffer, buffer_size);
if (new_buffer == NULL) break;
current_buffer = new_buffer;
}
}
free(current_buffer);
return -1;
}
template<typename T>
T check_errno(
const char * message,
T value
) {
if (value == T(-1)) {
perror(message);
exit(1);
}
return value;
}
size_t check_session(
OlmSession * session,
const char * message,
size_t value
) {
if (value == olm_error()) {
const char * olm_message = olm_session_last_error(session);
ssize_t ignored;
ignored = write(STDERR_FILENO, message, strlen(message));
ignored = write(STDERR_FILENO, ": ", 2);
ignored = write(STDERR_FILENO, olm_message, strlen(olm_message));
ignored = write(STDERR_FILENO, "\n", 1);
exit(2);
return ignored;
}
return value;
}
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