From aa15249fe5d8819e511ca0f09eae1d1207903e53 Mon Sep 17 00:00:00 2001 From: Patrik Nyblom Date: Tue, 29 Jan 2013 17:28:20 +0100 Subject: Make prim_file skip invalid filenames in unicode mode The fix affects list_dir and read_link. Raw filenames are now never produced, just consumed even if +fnu or +fna is used on Linux etc. This also adds the options to get error return or error handler warning messages with +fn{u|a}{i|w|e} as an option to erl. This is still not documented and there needs to be other versions of read_dir and read_link to facilitate reading of all types of filenames and links. A check that we will not change to an invalid directory is also needed. --- erts/emulator/beam/atom.names | 1 + erts/emulator/beam/erl_init.c | 53 +++++++++++++++++++++++++++++++++++++--- erts/emulator/beam/erl_unicode.c | 17 ++++++++++--- erts/emulator/beam/sys.h | 14 ++++++++++- 4 files changed, 77 insertions(+), 8 deletions(-) (limited to 'erts/emulator/beam') diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names index f138324e1f..ce60bb9bbc 100644 --- a/erts/emulator/beam/atom.names +++ b/erts/emulator/beam/atom.names @@ -269,6 +269,7 @@ atom hipe_architecture atom http httph https http_response http_request http_header http_eoh http_error http_bin httph_bin atom id atom if_clause +atom ignore atom imports atom in atom in_exiting diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c index 223c9c4d7e..ec3e0d54cb 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -981,19 +981,64 @@ erl_start(int argc, char **argv) break; case 'f': if (!strncmp(argv[i],"-fn",3)) { + int warning_type = ERL_FILENAME_WARNING_WARNING; arg = get_arg(argv[i]+3, argv[i+1], &i); switch (*arg) { case 'u': - erts_set_user_requested_filename_encoding(ERL_FILENAME_UTF8); + switch (*(argv[i]+4)) { + case 'w': + case 0: + break; + case 'i': + warning_type = ERL_FILENAME_WARNING_IGNORE; + break; + case 'e': + warning_type = ERL_FILENAME_WARNING_ERROR; + break; + default: + erts_fprintf(stderr, "bad type of warnings for " + "wrongly coded filename: %s\n", argv[i]+4); + erts_usage(); + } + erts_set_user_requested_filename_encoding + ( + ERL_FILENAME_UTF8, + warning_type + ); break; case 'l': - erts_set_user_requested_filename_encoding(ERL_FILENAME_LATIN1); + erts_set_user_requested_filename_encoding + ( + ERL_FILENAME_LATIN1, + warning_type + ); break; case 'a': - erts_set_user_requested_filename_encoding(ERL_FILENAME_UNKNOWN); + switch (*(argv[i]+4)) { + case 'w': + case 0: + break; + case 'i': + warning_type = ERL_FILENAME_WARNING_IGNORE; + break; + case 'e': + warning_type = ERL_FILENAME_WARNING_ERROR; + break; + default: + erts_fprintf(stderr, "bad type of warnings for " + "wrongly coded filename: %s\n", argv[i]+4); + erts_usage(); + } + erts_set_user_requested_filename_encoding + ( + ERL_FILENAME_UNKNOWN, + warning_type + ); break; default: - erts_fprintf(stderr, "bad filename encoding %s, can be (l,u or a)\n", arg); + erts_fprintf(stderr, "bad filename encoding %s, can be " + "(l,u or a, optionally followed by w, " + "i or e)\n", arg); erts_usage(); } break; diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c index 99108af937..8d7930e5fa 100644 --- a/erts/emulator/beam/erl_unicode.c +++ b/erts/emulator/beam/erl_unicode.c @@ -2573,8 +2573,20 @@ BIF_RETTYPE prim_file_internal_native2name_1(BIF_ALIST_1) case ERL_FILENAME_UTF8: bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc); if (erts_analyze_utf8(bytes,size,&err_pos,&num_chars,NULL) != ERTS_UTF8_OK) { + Eterm *hp = HAlloc(BIF_P,3); + Eterm warn_type = NIL; erts_free_aligned_binary_bytes(temp_alloc); - goto noconvert; + switch (erts_get_filename_warning_type()) { + case ERL_FILENAME_WARNING_IGNORE: + warn_type = am_ignore; + break; + case ERL_FILENAME_WARNING_ERROR: + warn_type = am_error; + break; + default: + warn_type = am_warning; + } + BIF_RET(TUPLE2(hp,am_error,warn_type)); } num_built = 0; num_eaten = 0; @@ -2607,9 +2619,8 @@ BIF_RETTYPE prim_file_internal_native2name_1(BIF_ALIST_1) erts_free_aligned_binary_bytes(temp_alloc); BIF_RET(ret); default: - goto noconvert; + break; } - noconvert: BIF_RET(BIF_ARG_1); } diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h index 249a9c05c2..9416a91480 100644 --- a/erts/emulator/beam/sys.h +++ b/erts/emulator/beam/sys.h @@ -1029,10 +1029,22 @@ char* win32_errorstr(int); #define ERL_FILENAME_UTF8_MAC (3) #define ERL_FILENAME_WIN_WCHAR (4) +/************************************************************************ + * If a filename in for example list_dir is not in the right encoding, it + * will be skipped in the resulting list, but depending on a startup setting + * we will inform the user in different ways. These macros define the + * different reactions to wrongly coded filenames. In the error case an + * exception will be thrown by prim_file. + ************************************************************************/ +#define ERL_FILENAME_WARNING_WARNING (0) +#define ERL_FILENAME_WARNING_IGNORE (1) +#define ERL_FILENAME_WARNING_ERROR (2) + int erts_get_native_filename_encoding(void); /* The set function is only to be used by erl_init! */ -void erts_set_user_requested_filename_encoding(int encoding); +void erts_set_user_requested_filename_encoding(int encoding, int warning); int erts_get_user_requested_filename_encoding(void); +int erts_get_filename_warning_type(void); void erts_init_sys_common_misc(void); -- cgit v1.2.3