113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* Treebird - Lightweight frontend for Pleroma
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* Copyright (C) 2022 Nekobit
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <ctype.h>
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#include <fcgi_stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "mime.h"
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char* get_mime_boundary(char* content_type_str, char** bound)
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{
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char* content = content_type_str ? content_type_str : getenv("CONTENT_TYPE");
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// Data gets changed in place
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char* content_type = malloc(strlen(content)+1);
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if (!content_type)
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{
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perror("malloc");
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exit(1);
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}
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strcpy(content_type, content);
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char* bound_str;
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char* boundary;
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/* Tmp reading variables */
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char* tmp;
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if (strstr(content_type, "multipart/form-data") == NULL ||
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(bound_str = strstr(content_type, "boundary")) == NULL)
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goto error;
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bound_str += sizeof("boundary")-1;
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boundary = (tmp = strchr(bound_str, '\"')) ? tmp :
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strchr(bound_str, '=');
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if (!boundary)
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goto error;
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boundary++;
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if ((tmp = strchr(boundary, '\"')))
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*tmp = '\0';
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*bound = boundary;
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return content_type;
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error:
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free(content_type);
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return NULL;
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}
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char* strnws(char* str)
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{
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for (; isblank(*str); ++str);
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return str;
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}
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#define STRSCMP(begin, str) strncmp((begin), (str), sizeof(str))
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char* read_form_data(char* boundary, char* begin, struct http_form_info* info)
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{
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char* r, *name;
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size_t bound_len = strlen(boundary);
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if (strncmp(begin, "--", 2) != 0 ||
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strncmp(begin+2, boundary, bound_len) != 0)
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return NULL;
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r = begin + 2 + bound_len + 2; /* Skip over LRSF */
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if (STRSCMP(r, "Content-Disposition") != 0)
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return NULL;
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r = strnws(r + sizeof("Content-Disposition")+1);
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if (*r != ':' ||
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STRSCMP(r, "form-data") != 0) // Fucked up
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return NULL;
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r = strnws(r + sizeof("form-data")+1);
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if (*r != ';')
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return NULL;
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r = strnws(r+1);
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if (STRSCMP(r, "name") != 0)
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return NULL;
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r = strnws(r + sizeof("name")+1);
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if (*r != '=')
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return NULL;
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r = strnws(r + 1);
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if (*r == '\"')
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r += 2;
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if (*r == '\"') ++r;
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name = r;
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if ((r = strchr(r, '\"')))
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*r = '\0';
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printf("nameparsed: %s\r\n", name);
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return name;
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}
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