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/* $Id: multipart.c 41 2024-08-22 04:26:35Z nishi $ */

#include "rv_multipart.h"

#include "rv_util.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct multipart_entry** multipart_entries = NULL;

void rv_free_multipart(void) {
        if(multipart_entries == NULL) return;
        int i;
        for(i = 0; multipart_entries[i] != NULL; i++) {
                free(multipart_entries[i]->name);
                free(multipart_entries[i]->data);
                free(multipart_entries[i]);
        }
        free(multipart_entries);
}

struct multipart_entry* rv_get_multipart(const char* name) {
        if(multipart_entries == NULL) return NULL;
        int i;
        for(i = 0; multipart_entries[i] != NULL; i++) {
                if(strcmp(multipart_entries[i]->name, name) == 0) {
                        return multipart_entries[i];
                }
        }
        return NULL;
}

void rv_parse_multipart(unsigned char* buffer, char* boundary, unsigned long long length) {
        unsigned long long i;
        int incr = 0;
        int phase = 0;
        unsigned long long fstart = 0;
        char* b = rv_strcat3("--", boundary, "\r");
        char* eb = rv_strcat3("--", boundary, "--\r");
        for(i = 0;; i++) {
                if(i == length || buffer[i] == '\n') {
                        char* line = malloc(i - incr + 1);
                        memcpy(line, buffer + incr, i - incr);
                        line[i - incr] = 0;
                        if(line[0] == '\r' && phase == 0) {
                                phase = 1;
                                fstart = i + 1;
                        } else if(strcmp(b, line) == 0 || strcmp(eb, line) == 0) {
                                if(phase == 1) {
                                        unsigned long long fend = i - strlen(line) - 2;
                                        char* data = buffer + fstart;
                                        unsigned long long datalen = fend - fstart;
                                }
                                phase = 0;
                                if(strcmp(eb, line) == 0) {
                                        free(line);
                                        break;
                                }
                        } else if(phase == 0) {
                                line[strlen(line) - 1] = 0;
                                fprintf(stderr, "%s\n", line);
                        }
                        free(line);
                        incr = i + 1;
                        if(i == length) break;
                }
        }
        free(b);
}