160 lines
4 KiB
C
160 lines
4 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 <string.h>
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#include <stdlib.h>
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#include "path.h"
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#include "index.h"
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#include "account.h"
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#include "error.h"
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enum path_state
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{
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PARSE_NEUTRAL,
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PARSE_READ,
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};
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int parse_path(struct session* ssn,
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mastodont_t* api,
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struct path_info* path_info)
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{
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int res = 0;
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int fail = 0, fin = 0;
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enum path_state state = PARSE_NEUTRAL;
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char* p = path_info->path + 1;
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char* p2 = getenv("PATH_INFO") + 1;
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// Stored into data
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int str_size = 0;
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char* tmp = NULL;
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char** data = NULL;
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size_t size = 0;
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for (int i = 0, j = 0;;)
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{
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switch (p[j])
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{
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case '\0':
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fin = 1;
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// fall
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case '/':
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if (state == PARSE_READ)
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{
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state = PARSE_NEUTRAL;
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// Set value and move on
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data = realloc(data, ++size * sizeof(tmp));
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data[size-1] = tmp;
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tmp = NULL;
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str_size = 0;
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}
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else if (state == PARSE_NEUTRAL && fin != 1) {
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if (p[j] == p2[i])
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break;
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else {
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fail = 1;
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goto breakpt;
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}
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}
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if (fin) goto breakpt;
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break;
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case ':':
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state = PARSE_READ;
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/* Abort early */
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if (p2[j] == '\0')
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{
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fail = 1;
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goto breakpt;
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}
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// fall
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default:
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if (state == PARSE_NEUTRAL)
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{
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if (p[j] == p2[i])
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break;
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else {
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fail = 1;
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goto breakpt;
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}
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}
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else {
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// Don't realloc, we already have a space for our final character
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if (p2[i] == '\0' || p2[i] == '/')
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{
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tmp[str_size] = '\0';
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++j;
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// Move --i back one to counter the upcoming ++i
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// If we don't, then we are one step too far
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--i;
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}
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else {
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tmp = realloc(tmp, ++str_size + 1);
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tmp[str_size-1] = p2[i];
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}
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}
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break;
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}
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if (state == PARSE_NEUTRAL) ++j; // Used for p
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++i; // Used for p2
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}
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breakpt:
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if (!fail)
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{
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path_info->callback(ssn, api, data);
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}
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else
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{
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res = 1;
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}
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// Cleanup
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/* for (size_t i = 0; i < size; ++i) */
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/* { */
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/* free(data[i]); */
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/* } */
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/* if (data) free(data); */
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return res;
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}
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void handle_paths(struct session* ssn,
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mastodont_t* api,
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struct path_info* paths,
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size_t paths_len)
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{
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char* path = getenv("PATH_INFO");
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// "default" path
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if (path == NULL || (path && strcmp(path, "/") == 0))
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{
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content_index(ssn, api);
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}
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else { // Generic path
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for (size_t i = 0; i < paths_len; ++i)
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{
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if (parse_path(ssn, api, paths + i) == 0)
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return;
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}
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// Fell out, return 404
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content_not_found(ssn, api, path);
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}
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}
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