httpd/server/gen_test_char.c

	gen_test_char.c revision 2d71630471d1c23f0137309e3c3957c633ecbfd6
/* we need some of the portability definitions... for strchr */
#include "ap_config.h"
#include "httpd.h"

/* A bunch of functions in util.c scan strings looking for certain characters.
 * To make that more efficient we encode a lookup table.
 */
#define T_ESCAPE_SHELL_CMD  (0x01)
#define T_ESCAPE_PATH_SEGMENT   (0x02)
#define T_OS_ESCAPE_PATH    (0x04)
#define T_HTTP_TOKEN_STOP   (0x08)

int main(int argc, char *argv[])
{
    unsigned c;
    unsigned char flags;

    printf(
"/* this file is automatically generated by gen_test_char, do not edit */\n"
"#define T_ESCAPE_SHELL_CMD (%u)\n"
"#define T_ESCAPE_PATH_SEGMENT  (%u)\n"
"#define T_OS_ESCAPE_PATH   (%u)\n"
"#define T_HTTP_TOKEN_STOP  (%u)\n"
"\n"
"static const unsigned char test_char_table[256] = {\n"
"    0,",
    T_ESCAPE_SHELL_CMD,
    T_ESCAPE_PATH_SEGMENT,
    T_OS_ESCAPE_PATH,
    T_HTTP_TOKEN_STOP);

    /* we explicitly dealt with NUL above
     * in case some strchr() do bogosity with it */

    for (c = 1; c < 256; ++c) {
    flags = 0;
    if (c % 20 == 0)
        printf("\n    ");

    /* escape_shell_cmd */
    if (strchr("&;`'\"|*?~<>^()[]{}$\\\n", c)) {
        flags |= T_ESCAPE_SHELL_CMD;
    }

    if (!ap_isalnum(c) && !strchr("$-_.+!*'(),:@&=~", c)) {
        flags |= T_ESCAPE_PATH_SEGMENT;
    }

    if (!ap_isalnum(c) && !strchr("$-_.+!*'(),:@&=/~", c)) {
        flags |= T_OS_ESCAPE_PATH;
    }

    /* these are the "tspecials" from RFC2068 */
    if (ap_iscntrl(c) || strchr(" \t()<>@,;:\\/[]?={}", c)) {
        flags |= T_HTTP_TOKEN_STOP;
    }
    printf("%u%c", flags, (c < 255) ? ',' : ' ');

    }
    printf("\n};\n");

    return 0;
}