diff options
| -rw-r--r-- | matrix-e2e.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/matrix-e2e.c b/matrix-e2e.c index dbd7dd1..2e3acd9 100644 --- a/matrix-e2e.c +++ b/matrix-e2e.c @@ -22,6 +22,7 @@ #include "matrix-api.h" #include "matrix-e2e.h" #include "matrix-json.h" +#include "debug.h" /* json-glib */ #include <json-glib/json-glib.h> @@ -50,6 +51,25 @@ static void clear_mem(volatile char *data, size_t len) #endif } +/* Returns a pointer to a freshly allocated buffer of 'n' bytes of random data. + * If it fails it returns NULL. + * TODO: There must be some portable function we can call to do this. + */ +static void *get_random(size_t n) +{ + FILE *urandom = fopen("/dev/urandom", "rb"); + if (!urandom) { + return NULL; + } + void *buffer = g_malloc(n); + if (fread(buffer, 1, n, urandom) != n) { + g_free(buffer); + buffer = NULL; + } + fclose(urandom); + return buffer; +} + /* Sign the JsonObject with olm_account_sign and add it to the object * as a 'signatures' member of the top level object. * 0 on success |