X-Git-Url: http://git.madism.org/?a=blobdiff_plain;f=postlicyd%2Fconfig.c;h=672faca0844a3e730bd01a25b2b053560847bee8;hb=59b8220d0227fe68537a563b3e5fa2e63e26bc0d;hp=871a71f649ba259b1b62fd295f809b72f432e0ae;hpb=929bb1ca2452a5bc7410896fd4e5eea44901a0b7;p=apps%2Fpfixtools.git diff --git a/postlicyd/config.c b/postlicyd/config.c index 871a71f..672faca 100644 --- a/postlicyd/config.c +++ b/postlicyd/config.c @@ -34,31 +34,84 @@ */ #include "file.h" -#include "filter.h" #include "config.h" +#include "str.h" -struct config_t { - A(filter_t) filters; - A(filter_params_t) params; - int entry_point; -}; +#define config_param_register(Param) + +/* Filter to execute on "CONNECT" + */ +config_param_register("client_filter"); + +/* Filter to execute on "MAIL FROM" + */ +config_param_register("sender_filter"); + +/* Filter to execute on "RCPT TO" + */ +config_param_register("recipient_filter"); + +/* Filter to execute on "DATA" + */ +config_param_register("data_filter"); + +/* Filter to execute on "END-OF-DATA" + */ +config_param_register("end_of_data_filter"); + +/* Filter to execute on "ETRN" + */ +config_param_register("etrn_filter"); + +/* Filter to execute on "HELO" + */ +config_param_register("helo_filter"); +config_param_register("ehlo_filter"); + +/* Filter to execute on "VRFY" + */ +config_param_register("verify_filter"); + + +/* Where to bind the server. + */ +config_param_register("port"); + + +static config_t *global_config = NULL; static inline config_t *config_new(void) { config_t *config = p_new(config_t, 1); - config->entry_point = -1; + global_config = config; return config; } +static void config_close(config_t *config) +{ + for (int i = 0 ; i < SMTP_count ; ++i) { + config->entry_points[i] = -1; + } + array_deep_wipe(config->filters, filter_wipe); + array_deep_wipe(config->params, filter_params_wipe); +} + void config_delete(config_t **config) { if (*config) { - array_deep_wipe((*config)->filters, filter_wipe); - array_deep_wipe((*config)->params, filter_params_wipe); + config_close(*config); p_delete(config); + global_config = NULL; } } +static void config_exit() +{ + if (global_config) { + config_delete(&global_config); + } +} +module_exit(config_exit); static bool config_second_pass(config_t *config) { @@ -77,35 +130,80 @@ static bool config_second_pass(config_t *config) break; } }} + if (!ok) { + return false; + } + if (!filter_check_safety(&config->filters)) { + return false; + } + + ok = false; +#define PARSE_CHECK(Expr, Fmt, ...) \ + if (!(Expr)) { \ + err(Fmt, ##__VA_ARGS__); \ + return false; \ + } + foreach (filter_param_t *param, config->params) { + switch (param->type) { +#define CASE(Param, State) \ + case ATK_ ## Param ## _FILTER: \ + ok = true; \ + config->entry_points[SMTP_ ## State] \ + = filter_find_with_name(&config->filters, param->value); \ + PARSE_CHECK(config->entry_points[SMTP_ ## State] >= 0, \ + "invalid filter name %s", param->value); \ + break; + CASE(CLIENT, CONNECT) + CASE(EHLO, EHLO) + CASE(HELO, HELO) + CASE(SENDER, MAIL) + CASE(RECIPIENT, RCPT) + CASE(DATA, DATA) + CASE(END_OF_DATA, END_OF_MESSAGE) + CASE(VERIFY, VRFY) + CASE(ETRN, ETRN) +#undef CASE + FILTER_PARAM_PARSE_INT(PORT, config->port); + default: break; + } + }} + array_deep_wipe(config->params, filter_params_wipe); + + if (!ok) { + err("no entry point defined"); + } return ok; } -config_t *config_read(const char *file) +static bool config_load(config_t *config) { - config_t *config; filter_t filter; file_map_t map; const char *p; int line = 0; const char *linep; + bool in_section = false; + bool end_of_section = false; char key[BUFSIZ]; char value[BUFSIZ]; - ssize_t key_len, value_len; + int key_len, value_len; - if (!file_map_open(&map, file, false)) { + if (!file_map_open(&map, config->filename, false)) { return false; } - config = config_new(); + config_close(config); filter_init(&filter); linep = p = map.map; +#define READ_LOG(Lev, Fmt, ...) \ + __log(LOG_ ## Lev, "config file %s:%d:%d: " Fmt, config->filename, \ + line + 1, (int)(p - linep + 1), ##__VA_ARGS__) #define READ_ERROR(Fmt, ...) \ do { \ - syslog(LOG_ERR, "config file %s:%d:%d: " Fmt, file, line + 1, \ - p - linep + 1, ##__VA_ARGS__); \ + READ_LOG(ERR, Fmt, ##__VA_ARGS__); \ goto error; \ } while (0) #define ADD_IN_BUFFER(Buffer, Len, Char) \ @@ -116,17 +214,23 @@ config_t *config_read(const char *file) (Buffer)[(Len)++] = (Char); \ (Buffer)[(Len)] = '\0'; \ } while (0) -#define READ_NEXT(OnEOF) \ +#define READ_NEXT \ do { \ if (*p == '\n') { \ ++line; \ linep = p + 1; \ } \ if (++p >= map.end) { \ - OnEOF; \ + if (!end_of_section) { \ + if (in_section) { \ + goto badeof; \ + } else { \ + goto ok; \ + } \ + } \ } \ } while (0) -#define READ_BLANK(OnEOF) \ +#define READ_BLANK \ do { \ bool in_comment = false; \ while (in_comment || isspace(*p) || *p == '#') { \ @@ -135,7 +239,7 @@ config_t *config_read(const char *file) } else if (*p == '#') { \ in_comment = true; \ } \ - READ_NEXT(OnEOF); \ + READ_NEXT; \ } \ } while (0) #define READ_TOKEN(Name, Buffer, Len) \ @@ -147,17 +251,17 @@ config_t *config_read(const char *file) } \ do { \ ADD_IN_BUFFER(Buffer, Len, *p); \ - READ_NEXT(goto badeof); \ + READ_NEXT; \ } while (isalnum(*p) || *p == '_'); \ } while (0) -#define READ_STRING(Name, Buffer, Len, OnEOF) \ +#define READ_STRING(Name, Buffer, Len, Ignore) \ do { \ (Len) = 0; \ (Buffer)[0] = '\0'; \ if (*p == '"') { \ bool escaped = false; \ while (*p == '"') { \ - READ_NEXT(goto badeof); \ + READ_NEXT; \ while (true) { \ if (*p == '\n') { \ READ_ERROR("string must not contain EOL"); \ @@ -167,14 +271,14 @@ config_t *config_read(const char *file) } else if (*p == '\\') { \ escaped = true; \ } else if (*p == '"') { \ - READ_NEXT(goto badeof); \ + READ_NEXT; \ break; \ } else { \ ADD_IN_BUFFER(Buffer, Len, *p); \ } \ - READ_NEXT(goto badeof); \ + READ_NEXT; \ } \ - READ_BLANK(goto badeof); \ + READ_BLANK; \ } \ if (*p != ';') { \ READ_ERROR("%s must end with a ';'", Name); \ @@ -184,7 +288,7 @@ config_t *config_read(const char *file) while (*p != ';' && isascii(*p) && (isprint(*p) || isspace(*p))) { \ if (escaped) { \ if (*p == '\r' || *p == '\n') { \ - READ_BLANK(goto badeof); \ + READ_BLANK; \ } else { \ ADD_IN_BUFFER(Buffer, Len, '\\'); \ } \ @@ -197,13 +301,17 @@ config_t *config_read(const char *file) } else { \ ADD_IN_BUFFER(Buffer, Len, *p); \ } \ - READ_NEXT(goto badeof); \ + READ_NEXT; \ } \ if (escaped) { \ ADD_IN_BUFFER(Buffer, Len, '\\'); \ } \ + while ((Len) > 0 && isspace((Buffer)[(Len) - 1])) { \ + (Buffer)[--(Len)] = '\0'; \ + } \ } \ - READ_NEXT(OnEOF); \ + end_of_section = Ignore; \ + READ_NEXT; \ } while(0) @@ -215,44 +323,51 @@ read_section: value[0] = key[0] = '\0'; value_len = key_len = 0; - READ_BLANK(goto ok); + in_section = end_of_section = false; + READ_BLANK; + in_section = true; READ_TOKEN("section name", key, key_len); - READ_BLANK(goto badeof); + READ_BLANK; switch (*p) { case '=': - READ_NEXT(goto badeof); + READ_NEXT; goto read_param_value; case '{': - READ_NEXT(goto badeof); + READ_NEXT; goto read_filter; default: READ_ERROR("invalid character '%c', expected '=' or '{'", *p); } read_param_value: - READ_BLANK(goto badeof); - READ_STRING("parameter value", value, value_len, ;); + READ_BLANK; + READ_STRING("parameter value", value, value_len, true); { - filter_params_t param; - param.name = strdup(key); - param.value = strdup(value); - array_add(config->params, param); + filter_param_t param; + param.type = param_tokenize(key, key_len); + if (param.type != ATK_UNKNOWN) { + param.value = p_dupstr(value, value_len); + param.value_len = value_len; + array_add(config->params, param); + } else { + READ_LOG(INFO, "unknown parameter %.*s", key_len, key); + } } goto read_section; read_filter: filter_set_name(&filter, key, key_len); - READ_BLANK(goto badeof); + READ_BLANK; while (*p != '}') { READ_TOKEN("filter parameter name", key, key_len); - READ_BLANK(goto badeof); + READ_BLANK; if (*p != '=') { READ_ERROR("invalid character '%c', expected '='", *p); } - READ_NEXT(goto badeof); - READ_BLANK(goto badeof); - READ_STRING("filter parameter value", value, value_len, goto badeof); - READ_BLANK(goto badeof); + READ_NEXT; + READ_BLANK; + READ_STRING("filter parameter value", value, value_len, false); + READ_BLANK; if (strcmp(key, "type") == 0) { if (!filter_set_type(&filter, value, value_len)) { READ_ERROR("unknow filter type (%s) for filter %s", @@ -265,12 +380,14 @@ read_filter: key + 3, filter.name); } } else { - if (!filter_add_param(&filter, key, key_len, value, value_len)) { - goto error; - } + /* filter_add_param failure mean unknown type or unsupported type. + * this are non-fatal errors. + */ + (void)filter_add_param(&filter, key, key_len, value, value_len); } } - READ_NEXT(;); + end_of_section = true; + READ_NEXT; if (!filter_build(&filter)) { READ_ERROR("invalid filter %s", filter.name); } @@ -283,14 +400,31 @@ ok: goto error; } file_map_close(&map); - return config; + return true; badeof: - syslog(LOG_ERR, "Unexpected end of file"); + err("Unexpected end of file"); error: - filter_wipe(&filter); - config_delete(&config); + if (filter.name) { + filter_wipe(&filter); + } file_map_close(&map); - return NULL; + return false; +} + +bool config_reload(config_t *config) +{ + return config_load(config); +} + +config_t *config_read(const char *file) +{ + config_t *config = config_new(); + config->filename = file; + if (!config_reload(config)) { + config_delete(&config); + return NULL; + } + return config; }