diff options
Diffstat (limited to 'src/lib-imap/imap-id.c')
| -rw-r--r-- | src/lib-imap/imap-id.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/lib-imap/imap-id.c b/src/lib-imap/imap-id.c new file mode 100644 index 0000000..f873c57 --- /dev/null +++ b/src/lib-imap/imap-id.c @@ -0,0 +1,173 @@ +/* Copyright (c) 2008-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "str.h" +#include "str-sanitize.h" +#include "istream.h" +#include "imap-parser.h" +#include "imap-quote.h" +#include "imap-id.h" +#include "dovecot-version.h" + +#ifdef HAVE_SYS_UTSNAME_H +# include <sys/utsname.h> +#endif + +#ifdef HAVE_UNAME +static struct utsname utsname_result; +static bool utsname_set = FALSE; + +static const char *imap_id_get_uname(const char *key) +{ + if (!utsname_set) { + utsname_set = TRUE; + if (uname(&utsname_result) < 0) { + i_error("uname() failed: %m"); + i_zero(&utsname_result); + } + } + + if (strcasecmp(key, "os") == 0) + return utsname_result.sysname; + if (strcasecmp(key, "os-version") == 0) + return utsname_result.release; + return NULL; +} +#endif + +static const char *imap_id_get_default(const char *key) +{ + if (strcasecmp(key, "name") == 0) + return PACKAGE_NAME; + if (strcasecmp(key, "version") == 0) + return PACKAGE_VERSION; + if (strcasecmp(key, "revision") == 0) + return DOVECOT_REVISION; + if (strcasecmp(key, "support-url") == 0) + return PACKAGE_WEBPAGE; + if (strcasecmp(key, "support-email") == 0) + return PACKAGE_BUGREPORT; +#ifdef HAVE_UNAME + return imap_id_get_uname(key); +#endif +} + +static const char * +imap_id_reply_generate_from_imap_args(const struct imap_arg *args) +{ + string_t *str; + const char *key, *value; + + if (IMAP_ARG_IS_EOL(args)) + return "NIL"; + + str = t_str_new(256); + str_append_c(str, '('); + for (; !IMAP_ARG_IS_EOL(args); args++) { + if (!imap_arg_get_astring(args, &key)) { + /* broken input */ + if (IMAP_ARG_IS_EOL(&args[1])) + break; + args++; + } else { + /* key */ + if (str_len(str) > 1) + str_append_c(str, ' '); + imap_append_quoted(str, key); + str_append_c(str, ' '); + /* value */ + if (IMAP_ARG_IS_EOL(&args[1])) { + str_append(str, "NIL"); + break; + } + args++; + if (!imap_arg_get_astring(args, &value)) + value = NULL; + else { + if (strcmp(value, "*") == 0) + value = imap_id_get_default(key); + } + imap_append_nstring(str, value); + } + } + if (str_len(str) == 1) { + /* broken */ + return "NIL"; + } + str_append_c(str, ')'); + return str_c(str); +} + +const char *imap_id_reply_generate(const char *settings) +{ + struct istream *input; + struct imap_parser *parser; + const struct imap_arg *args; + const char *ret; + + if (settings == NULL) + return "NIL"; + + input = i_stream_create_from_data(settings, strlen(settings)); + (void)i_stream_read(input); + + parser = imap_parser_create(input, NULL, SIZE_MAX); + if (imap_parser_finish_line(parser, 0, 0, &args) <= 0) + ret = "NIL"; + else + ret = imap_id_reply_generate_from_imap_args(args); + + imap_parser_unref(&parser); + i_stream_destroy(&input); + return ret; +} + +void imap_id_log_reply_append(string_t *reply, const char *key, + const char *value) +{ + if (str_len(reply) > 0) + str_append(reply, ", "); + str_append(reply, str_sanitize(key, IMAP_ID_KEY_MAX_LEN)); + str_append_c(reply, '='); + str_append(reply, value == NULL ? "NIL" : str_sanitize(value, 80)); +} + +const char *imap_id_args_get_log_reply(const struct imap_arg *args, + const char *settings) +{ + const char *const *keys, *key, *value; + string_t *reply; + bool log_all; + + if (settings == NULL || *settings == '\0') + return NULL; + if (!imap_arg_get_list(args, &args)) + return NULL; + + log_all = strcmp(settings, "*") == 0; + reply = t_str_new(256); + keys = t_strsplit_spaces(settings, " "); + while (!IMAP_ARG_IS_EOL(&args[0]) && + !IMAP_ARG_IS_EOL(&args[1])) { + if (!imap_arg_get_string(args, &key)) { + /* broken input */ + args += 2; + continue; + } + args++; + if (strlen(key) > 30) { + /* broken: ID spec requires fields to be max. 30 + octets */ + args++; + continue; + } + + if (log_all || str_array_icase_find(keys, key)) { + if (!imap_arg_get_nstring(args, &value)) + value = ""; + imap_id_log_reply_append(reply, key, value); + } + args++; + } + return str_len(reply) == 0 ? NULL : str_c(reply); +} |