/*======================================================================
 FILE:
 CREATOR: eric 25 June 2000

 (C) COPYRIGHT 2000, Eric Busboom <eric@civicknowledge.com>

 This library is free software; you can redistribute it and/or modify
 it under the terms of either:

    The LGPL as published by the Free Software Foundation, version
    2.1, available at: https://www.gnu.org/licenses/lgpl-2.1.html

 Or:

    The Mozilla Public License Version 2.0. You may obtain a copy of
    the License at https://www.mozilla.org/MPL/

 The Initial Developer of the Original Code is Eric Busboom
======================================================================*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "libical/ical.h"

#include <stdlib.h>

/*int sspm_parse_mime(struct sspm_part *parts,
               size_t max_parts,
               struct sspm_action_map *actions,
               char* (*get_string)(char *s, size_t size, void *data),
               void *get_string_data,
               struct sspm_header *first_header
    );
*/

const char *major_type_string[] = {
    "TEXT",
    "IMAGE",
    "AUDIO",
    "VIDEO",
    "APPLICATION",
    "MULTIPART",
    "MESSAGE",
    "UNKNOWN",
    "NO"
};

const char *minor_type_string[] = {
    "ANY",
    "PLAIN",
    "RFC822",
    "DIGEST",
    "CALENDAR",
    "MIXED",
    "RELATED",
    "ALTERNATIVE",
    "PARALLEL",
    "UNKNOWN",
    "NO"
};

char *read_stream(char *s, size_t size, void *d)
{
    char *c = fgets(s, (int)size, (FILE *) d);

    return c;
}

int main(int argc, char *argv[])
{
    FILE *f;
    int c;

#if !defined(HAVE_UNISTD_H)
    extern char *optarg;
    extern int optopt;
#endif
    int errflg = 0;
    char *program_name;

    struct options
    {
        int normal;
        int stress;
        int base64;
        int qp;
        int sleepy;
        int count;
        char *input_file;
    } opt;

    memset(&opt, 0, sizeof(opt));

    program_name = (char *)strrchr((char *)argv[0], '/');
    program_name++;

    opt.input_file = NULL;

    while ((c = getopt(argc, argv, "nsbqi:S:c:")) != -1) {
        switch (c) {
        case 'i':{
                /* Input comes from named file */
                if (opt.input_file) {
                    free(opt.input_file);
                }
                opt.input_file = strdup(optarg);
                break;
            }
        case 'n':{
                /* Normal */

                if (opt.stress + opt.base64 + opt.qp != 0) {
                    fprintf(stderr, "%s: Use only one of  n,s,b and q\n", program_name);
                }
                opt.normal = 1;
                break;
            }
        case 's':{
                /* Stress-test */
                if (opt.base64 + opt.normal + opt.qp != 0) {
                    fprintf(stderr, "%s: Use only one of  n,s,b and q\n", program_name);
                }
                opt.stress = 1;
                break;
            }
        case 'b':{
                /* test base64 decoding */
                if (opt.stress + opt.normal + opt.qp != 0) {
                    fprintf(stderr, "%s: Use only one of  n,s,b and q\n", program_name);
                }
                opt.base64 = 1;
                break;
            }
        case 'q':{
                /* test quoted-printable decoding */
                if (opt.stress + opt.base64 + opt.normal != 0) {
                    fprintf(stderr, "%s: Use only one of  n,s,b and q\n", program_name);
                }
                opt.qp = 1;
                break;
            }
        case 'S':{
                /* sleep at end of run */
                opt.sleepy = atoi(optarg);
                break;
            }

        case 'c':{
                /* number of iterations of stress test */
                opt.count = atoi(optarg);
                break;
            }

        case ':':{
                /* Option given without an operand */
                fprintf(stderr, "%s: Option -%c requires an operand\n", program_name, optopt);
                errflg++;
                break;
            }
        case '?':{
                errflg++;
            }
        }
    }

    if (errflg > 0) {
        fprintf(stderr, "Usage: %s [-n|-s|-b|-q] [-i input_file]\n", program_name);
        exit(1);
    }

    if (opt.stress + opt.base64 + opt.normal + opt.qp == 0) {
        fprintf(stderr, "%s: Must have one of n,s,b or q\n", program_name);
    }

    if (opt.input_file) {
        f = fopen(opt.input_file, "r");
        if (f == 0) {
            fprintf(stderr, "Could not open input file \"%s\"\n", opt.input_file);
            exit(1);
        }
    } else {
        f = stdin;
    }

    if (opt.normal == 1) {
        icalcomponent *c;

        c = icalmime_parse(read_stream, f);

        printf("%s\n", icalcomponent_as_ical_string(c));

        icalcomponent_free(c);

    } else if (opt.stress == 1) {
        /* Read file in by lines, then randomize the lines into a
           string buffer */

        char *array[1024];
        char temp[1024];
        char *buf;
        unsigned int i, j;
        unsigned int last, non_rand, rand_lines, r;
        size_t size;
        icalcomponent *c;
        struct slg_data
        {
            char *pos;
            char *str;
        } d;

        size = 0;
        for (i = 0; i < 1024 && !feof(f); ++i) {
            if (fgets(temp, 1024, f) != NULL) {
                array[i] = strdup(temp);
                size += strlen(temp);
            } else {
                break;
            }
        }
        last = i;

        assert(size > 0);
        buf = malloc(size * 2);
        assert(buf != 0);

        for (j = 0; j < (unsigned int)opt.count; j++) {

            srand(j);
            memset(buf, 0, size * 2);
            /* First insert some non-randomized lines */
            non_rand = (unsigned int)(((float)rand() / (float)RAND_MAX) * last);
            for (i = 0; i < last && i < non_rand; i++) {
                strcat(buf, array[i]);
            }

            /* Then, insert some lines at random */

            rand_lines = last - non_rand;

            for (i = 0; i < rand_lines; i++) {
                srand(i);
                r = (unsigned int)(((float)rand() / (float)RAND_MAX) * rand_lines);
                strcat(buf, array[r + non_rand]);
            }

            d.pos = 0;
            d.str = buf;

            c = icalmime_parse(icalparser_string_line_generator, &d);

            printf("%s\n", icalcomponent_as_ical_string(c));

            icalcomponent_free(c);
        }

        free(buf);

        for (i = 0; i < last; i++) {
            free(array[i]);
        }

    } else if (opt.qp == 1) {
        char str[4096];
        char conv[4096];

        memset(str, 0, 4096);

        while (!feof(f) && fgets(str, 4096, f) != 0) {
            size_t size;

            size = strlen(str);
            memset(conv, 0, 4096);
            (void)decode_quoted_printable(conv, str, &size);

            conv[size] = '\0';
            printf("%s", conv);
            memset(str, 0, 4096);
        }
    } else if (opt.base64 == 1) {
        char str[4096];
        char conv[4096];

        memset(str, 0, 4096);

        while (!feof(f) && fgets(str, 4096, f) != 0) {
            size_t size;

            size = strlen(str);
            memset(conv, 0, 4096);
            (void)decode_base64(conv, str, &size);

            conv[size] = '\0';
            printf("%s", conv);
            memset(str, 0, 4096);
        }
    }

    if (opt.sleepy != 0) {
        sleep((unsigned int)opt.sleepy);
    }

    if (opt.input_file != 0) {
        free(opt.input_file);
    }

    icalmemory_free_ring();

    return 0;
}