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| author | Lars Thorsen <[email protected]> | 2017-11-24 13:25:09 +0100 |
|---|---|---|
| committer | Lars Thorsen <[email protected]> | 2017-12-01 11:59:50 +0100 |
| commit | ae25b9bde6276a60f0148691d1eed21e30e433dd (patch) | |
| tree | 4184394232e4fdc524bd3ef5ea9772d5a6f64d8c /lib/crypto | |
| parent | b272a4d292356eef69253517ea8f9fec55259613 (diff) | |
| download | otp-ae25b9bde6276a60f0148691d1eed21e30e433dd.tar.gz otp-ae25b9bde6276a60f0148691d1eed21e30e433dd.tar.bz2 otp-ae25b9bde6276a60f0148691d1eed21e30e433dd.zip | |
[crypto] Fix memory leak
Fix memory leak in engine load code found by valgrind.
Diffstat (limited to 'lib/crypto')
| -rw-r--r-- | lib/crypto/c_src/crypto.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index f05bfa10b3..ca6917d56e 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -4886,7 +4886,6 @@ static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER #ifdef HAS_ENGINE_SUPPORT ERL_NIF_TERM ret; ErlNifBinary engine_id_bin; - unsigned int engine_id_len = 0; char *engine_id; ENGINE *engine; struct engine_ctx *ctx; @@ -4896,14 +4895,14 @@ static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER PRINTF_ERR0("engine_by_id_nif Leaved: badarg"); return enif_make_badarg(env); } else { - engine_id_len = engine_id_bin.size+1; - engine_id = enif_alloc(engine_id_len); - (void) memcpy(engine_id, engine_id_bin.data, engine_id_len); - engine_id[engine_id_len-1] = '\0'; + engine_id = enif_alloc(engine_id_bin.size+1); + (void) memcpy(engine_id, engine_id_bin.data, engine_id_bin.size); + engine_id[engine_id_bin.size] = '\0'; } engine = ENGINE_by_id(engine_id); if(!engine) { + enif_free(engine_id); PRINTF_ERR0("engine_by_id_nif Leaved: {error, bad_engine_id}"); return enif_make_tuple2(env, atom_error, atom_bad_engine_id); } @@ -5038,7 +5037,8 @@ static ERL_NIF_TERM engine_ctrl_cmd_strings_nif(ErlNifEnv* env, int argc, const error: for(i = 0; cmds != NULL && cmds[i] != NULL; i++) - enif_free(cmds[i]); + enif_free(cmds[i]); + enif_free(cmds); return ret; #else return atom_notsup; @@ -5377,7 +5377,6 @@ static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, cha ErlNifBinary tmpbin; int arity; char* tmpstr; - int tmplen = 0; if(!enif_is_empty_list(env, term)) { if(!enif_get_list_cell(env, term, &head, &tail)) { @@ -5392,10 +5391,9 @@ static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, cha cmds[i] = NULL; return -1; } else { - tmplen = tmpbin.size+1; - tmpstr = enif_alloc(tmplen); - (void) memcpy(tmpstr, tmpbin.data, tmplen); - tmpstr[tmplen-1] = '\0'; + tmpstr = enif_alloc(tmpbin.size+1); + (void) memcpy(tmpstr, tmpbin.data, tmpbin.size); + tmpstr[tmpbin.size] = '\0'; cmds[i++] = tmpstr; } if(!enif_inspect_binary(env, tmp_tuple[1], &tmpbin)) { @@ -5405,10 +5403,9 @@ static int get_engine_load_cmd_list(ErlNifEnv* env, const ERL_NIF_TERM term, cha if(tmpbin.size == 0) cmds[i++] = NULL; else { - tmplen = tmpbin.size+1; - tmpstr = enif_alloc(tmplen); - (void) memcpy(tmpstr, tmpbin.data, tmplen); - tmpstr[tmplen-1] = '\0'; + tmpstr = enif_alloc(tmpbin.size+1); + (void) memcpy(tmpstr, tmpbin.data, tmpbin.size); + tmpstr[tmpbin.size] = '\0'; cmds[i++] = tmpstr; } } |