diff options
| -rw-r--r-- | include/xtables.h | 7 | ||||
| -rw-r--r-- | xtables.c | 49 |
2 files changed, 55 insertions, 1 deletions
diff --git a/include/xtables.h b/include/xtables.h index 728b1aa3..5e4b2c7b 100644 --- a/include/xtables.h +++ b/include/xtables.h @@ -220,7 +220,11 @@ enum exittype { OTHER_PROBLEM = 1, PARAMETER_PROBLEM, VERSION_PROBLEM, - RESOURCE_PROBLEM + RESOURCE_PROBLEM, + P_ONLY_ONCE, + P_NO_INVERT, + P_BAD_VALUE, + P_ONE_ACTION, }; /* this is a special 64bit data type that is 8-byte aligned */ @@ -229,6 +233,7 @@ enum exittype { int check_inverse(const char option[], int *invert, int *optind, int argc); void exit_error(enum exittype, const char *, ...)__attribute__((noreturn, format(printf,2,3))); +extern void param_act(unsigned int, const char *, ...); extern const char *program_name, *program_version; #ifdef NO_SHARED_LIBS @@ -19,6 +19,7 @@ #include <errno.h> #include <fcntl.h> #include <netdb.h> +#include <stdarg.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -639,3 +640,51 @@ void xtables_register_target(struct xtables_target *me) me->t = NULL; me->tflags = 0; } + +void param_act(unsigned int status, const char *p1, ...) +{ + const char *p2, *p3; + va_list args; + bool b; + + va_start(args, p1); + + switch (status) { + case P_ONLY_ONCE: + p2 = va_arg(args, const char *); + b = va_arg(args, unsigned int); + if (!b) + return; + exit_error(PARAMETER_PROBLEM, + "%s: \"%s\" option may only be specified once", + p1, p2); + break; + case P_NO_INVERT: + p2 = va_arg(args, const char *); + b = va_arg(args, unsigned int); + if (!b) + return; + exit_error(PARAMETER_PROBLEM, + "%s: \"%s\" option cannot be inverted", p1, p2); + break; + case P_BAD_VALUE: + p2 = va_arg(args, const char *); + p3 = va_arg(args, const char *); + exit_error(PARAMETER_PROBLEM, + "%s: Bad value for \"%s\" option: \"%s\"", + p1, p2, p3); + break; + case P_ONE_ACTION: + b = va_arg(args, unsigned int); + if (!b) + return; + exit_error(PARAMETER_PROBLEM, + "%s: At most one action is possible", p1); + break; + default: + exit_error(status, p1, args); + break; + } + + va_end(args); +} |