/* Copyright (C) 2007-2023 Open Information Security Foundation

 *

 * You can copy, redistribute or modify this Program under the terms of

 * the GNU General Public License version 2 as published by the Free

 * Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * version 2 along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA.

 */

/**

 * \file

 *

 * \author Victor Julien <victor@inliniac.net>

 *

 * Print utility functions

 */

#include "suricata-common.h"

#include "util-print.h"

#include "util-error.h"

#include "util-debug.h"

#include "util-validate.h"

#include "rust.h"

/**

 *  \brief print a buffer as hex on a single line

 *

 *  Prints in the format "00 AA BB"

 *

 *  \param nbuf buffer into which the output is written

 *  \param offset of where to start writing into the buffer

 *  \param max_size the size of the output buffer

 *  \param buf buffer to print from

 *  \param buflen length of the input buffer

 */

void PrintBufferRawLineHex(char *nbuf, int *offset, int max_size, const uint8_t *buf, uint32_t buflen)

{

    for (uint32_t u = 0; u < buflen; u++) {

        PrintBufferData(nbuf, offset, max_size, "%02X ", buf[u]);

    }

}

/**

 *  \brief print a buffer as hex on a single line into retbuf buffer

 *

 *  Prints in the format "00 AA BB"

 *

 *  \param retbuf pointer to the buffer which will have the result

 *  \param rebuflen length of the buffer

 *  \param buf buffer to print from

 *  \param buflen length of the input buffer

 */

void PrintRawLineHexBuf(char *retbuf, uint32_t retbuflen, const uint8_t *buf, uint32_t buflen)

{

    uint32_t offset = 0;

    for (uint32_t u = 0; u < buflen; u++) {

        PrintBufferData(retbuf, &offset, retbuflen, "%02X ", buf[u]);

    }

}

void PrintRawUriFp(FILE *fp, const uint8_t *buf, uint32_t buflen)

{

#define BUFFER_LENGTH 2048

    char nbuf[BUFFER_LENGTH] = "";

    uint32_t offset = 0;

    for (uint32_t u = 0; u < buflen; u++) {

        if (isprint(buf[u]) && buf[u] != '\"') {

            if (buf[u] == '\\') {

                PrintBufferData(nbuf, &offset, BUFFER_LENGTH,

                                "\\\\");

            } else {

                PrintBufferData(nbuf, &offset, BUFFER_LENGTH,

                                "%c", buf[u]);

            }

        } else {

            PrintBufferData(nbuf, &offset, BUFFER_LENGTH,

                            "\\x%02X", buf[u]);

        }

    }

    fprintf(fp, "%s", nbuf);

}

void PrintRawUriBuf(

        char *retbuf, uint32_t *offset, uint32_t retbuflen, const uint8_t *buf, size_t buflen)

{

    for (size_t u = 0; u < buflen; u++) {

        if (isprint(buf[u]) && buf[u] != '\"') {

            if (buf[u] == '\\') {

                PrintBufferData(retbuf, offset, retbuflen,

                                "\\\\");

            } else {

                PrintBufferData(retbuf, offset, retbuflen,

                                "%c", buf[u]);

            }

        } else {

            PrintBufferData(retbuf, offset, retbuflen,

                            "\\x%02X", buf[u]);

        }

    }

}

void PrintRawDataFp(FILE *fp, const uint8_t *buf, uint32_t buflen)

{

    int ch = 0;

    if (buf == NULL) {

        fprintf(fp, " (null)\n");

        return;

    }

    for (uint32_t u = 0; u < buflen; u += 16) {

        fprintf(fp ," %04X  ", u);

        for (ch = 0; (u+ch) < buflen && ch < 16; ch++) {

             fprintf(fp, "%02X ", (uint8_t)buf[u+ch]);

             if (ch == 7) fprintf(fp, " ");

        }

        if (ch == 16) fprintf(fp, "  ");

        else if (ch < 8) {

            int spaces = (16 - ch) * 3 + 2 + 1;

            int s = 0;

            for ( ; s < spaces; s++) fprintf(fp, " ");

        } else if(ch < 16) {

            int spaces = (16 - ch) * 3 + 2;

            int s = 0;

            for ( ; s < spaces; s++) fprintf(fp, " ");

        }

        for (ch = 0; (u+ch) < buflen && ch < 16; ch++) {

             fprintf(fp, "%c", isprint((uint8_t)buf[u+ch]) ? (uint8_t)buf[u+ch] : '.');

             if (ch == 7)  fprintf(fp, " ");

             if (ch == 15) fprintf(fp, "\n");

        }

    }

    if (ch != 16)

        fprintf(fp, "\n");

}

void PrintRawDataToBuffer(uint8_t *dst_buf, uint32_t *dst_buf_offset_ptr, uint32_t dst_buf_size,

                          const uint8_t *src_buf, uint32_t src_buf_len)

{

    int ch = 0;

    for (uint32_t u = 0; u < src_buf_len; u += 16) {

        PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size,

                        " %04X  ", u);

        for (ch = 0; (u + ch) < src_buf_len && ch < 16; ch++) {

            PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size,

                            "%02X ", (uint8_t)src_buf[u + ch]);

            if (ch == 7) {

                PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size,

                                " ");

            }

        }

        if (ch == 16) {

            PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, "  ");

        } else if (ch < 8) {

            int spaces = (16 - ch) * 3 + 2 + 1;

            int s = 0;

            for ( ; s < spaces; s++)

                PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, " ");

        } else if(ch < 16) {

            int spaces = (16 - ch) * 3 + 2;

            int s = 0;

            for ( ; s < spaces; s++)

                PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, " ");

        }

        for (ch = 0; (u+ch) < src_buf_len && ch < 16; ch++) {

            PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size,

                            "%c",

                            isprint((uint8_t)src_buf[u + ch]) ? (uint8_t)src_buf[u + ch] : '.');

             if (ch == 7)

                 PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, " ");

             if (ch == 15)

                 PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, "\n");

        }

    }

    if (ch != 16)

        PrintBufferData((char *)dst_buf, dst_buf_offset_ptr, dst_buf_size, "\n");

}

void PrintStringsToBuffer(uint8_t *dst_buf, uint32_t *dst_buf_offset_ptr, uint32_t dst_buf_size,

                          const uint8_t *src_buf, const uint32_t src_buf_len)

{

    for (uint32_t ch = 0; ch < src_buf_len && *dst_buf_offset_ptr < dst_buf_size;

            ch++, (*dst_buf_offset_ptr)++) {

        if (isprint((uint8_t)src_buf[ch]) || src_buf[ch] == '\n' || src_buf[ch] == '\r') {

            dst_buf[*dst_buf_offset_ptr] = src_buf[ch];

        } else {

            dst_buf[*dst_buf_offset_ptr] = '.';

        }

    }

    dst_buf[dst_buf_size - 1] = 0;

}

static const char *PrintInetIPv6(const void *src, char *dst, socklen_t size)

{

    char s_part[6];

    uint16_t x[8];

    memcpy(&x, src, 16);

    /* current IPv6 format is fixed size */

    if (size < 8 * 5) {

        SCLogWarning("Too small buffer to write IPv6 address");

        return NULL;

    }

    memset(dst, 0, size);

    for (int i = 0; i < 8; i++) {

        snprintf(s_part, sizeof(s_part), "%04x:", htons(x[i]));

        strlcat(dst, s_part, size);

    }

    /* suppress last ':' */

    dst[strlen(dst) - 1] = 0;

    return dst;

}

const char *PrintInet(int af, const void *src, char *dst, socklen_t size)

{

    switch (af) {

        case AF_INET:

#if defined(OS_WIN32) && NTDDI_VERSION >= NTDDI_VISTA

{

            // because Windows has to provide a non-conformant inet_ntop, of

            // course!

            struct in_addr _src;

            memcpy(&_src, src, sizeof(struct in_addr));

            return inet_ntop(af, &_src, dst, size);

}

#else

            return inet_ntop(af, src, dst, size);

#endif

        case AF_INET6:

            /* Format IPv6 without deleting zeroes */

            return PrintInetIPv6(src, dst, size);

        default:

            SCLogError("Unsupported protocol: %d", af);

    }

    return NULL;

}

void PrintHexString(char *str, size_t size, uint8_t *buf, size_t buf_len)

{

    DEBUG_VALIDATE_BUG_ON(size < 2 * buf_len);

    SCToHex((uint8_t *)str, size, buf, buf_len);

}