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| author |  Sergey Mironov <grrwlf@gmail.com> | 2014-02-26 09:43:47 +0000 |
|---|---|---|
| committer | Sergey Mironov <grrwlf@gmail.com> | 2014-02-26 09:43:47 +0000 |
| commit | ecab43a27e7757479201d3c0ac3879c403073708 (patch) | |
| tree | 2d0cfe6f1f967402e770625b263d1a3a38670200 | |
| parent | 4f43eb61c7218b1440e217b86c35a9317def94f0 (diff) | |
Protect uw_Basis_new_client_source from invalid ctx->id
We assume that FFI code may create new contextes with id left unassigned
| -rw-r--r-- | src/c/urweb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/c/urweb.c b/src/c/urweb.c index f2c37885..df137e77 100644 --- a/src/c/urweb.c +++ b/src/c/urweb.c @@ -1586,6 +1586,9 @@ uw_Basis_source uw_Basis_new_client_source(uw_context ctx, uw_Basis_string s) { int len; size_t s_len = strlen(s); + if(ctx->id < 0) + uw_error(ctx, FATAL, "Attempt to create client source using inappropriate context"); + uw_check_script(ctx, 15 + 2 * INTS_MAX + s_len); sprintf(ctx->script.front, "s%d_%llu=sc(exec(%n", ctx->id, ctx->source_count, &len); ctx->script.front += len; |