133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
/*
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* This file is part of uIRC. (https://git.redxen.eu/caskd/uIRC)
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* Copyright (c) 2019, 2020 Alex-David Denes
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*
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* uIRC is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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* any later version.
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*
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* uIRC 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with uIRC. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "tokenizers.h"
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signed int
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Tok_mesg(char* str, IRC_Message* out)
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{
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if (str == NULL || out == NULL) return ERR_UIRC_NULL_ARGS;
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int ret;
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char *progr = str, *command;
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#ifdef UIRC_IRCV3
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if (*progr == '@') {
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char* tags;
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if ((tags = strtok_mr(&progr, " ")) != NULL) {
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if ((ret = Tok_tags(tags, &out->tags)) < 0) return ret;
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} else
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return ERR_UIRC_INVALID_FORMAT;
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}
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skip_spaces(&progr);
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#endif /* UIRC_IRCV3 */
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if (*progr == ':') {
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char* prefix;
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if ((prefix = strtok_mr(&progr, " ")) != NULL) {
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if ((ret = Tok_user(prefix, &out->name, false)) < 0) return ret;
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} else
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return ERR_UIRC_INVALID_FORMAT;
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}
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skip_spaces(&progr);
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if ((command = strtok_mr(&progr, " ")) != NULL) {
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signed short temp;
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if (isalpha(*command)) {
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if ((temp = Ircmd_stoi(command)) < UIRC_FCMD || temp > UIRC_LCMD) return ERR_UIRC_UNKNOWN_TOKEN;
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out->cmd = (IRC_Command) temp;
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} else {
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out->cmd = (IRC_Command) atoi(command);
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}
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} else
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return ERR_UIRC_INVALID_FORMAT;
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skip_spaces(&progr);
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short i;
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for (i = 0; i < 15 && *progr;) {
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if (i == 14 || *progr == ':') {
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out->args[i++] = (*progr == ':') ? progr + 1 : progr;
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out->trailing = true;
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break;
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} else {
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if ((out->args[i++] = strtok_mr(&progr, " ")) == NULL) return ERR_UIRC_INVALID_FORMAT;
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skip_spaces(&progr);
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}
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}
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out->args[i] = NULL;
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return 1;
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}
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#ifdef UIRC_IRCV3
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signed int
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Tok_tags(char* str, IRC_Tags* out)
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{
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if (str == NULL || out == NULL) return ERR_UIRC_NULL_ARGS;
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char * cval, *cpos = str, *ctag = NULL;
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bool clientbound;
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const struct tagmapping tagmps[] = {
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{ .name = "time", .assg = &out->time }, { .name = "account", .assg = &out->account },
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{ .name = "batch", .assg = &out->batch }, { .name = "label", .assg = &out->label },
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{ .name = "msgid", .assg = &out->msgid }, { .name = "multiline-concat", .assg = &out->multiline_concat },
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{ .name = "typing", .assg = &out->typing }, { .name = "react", .assg = &out->react },
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{ .name = "reply", .assg = &out->reply }
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};
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if (*cpos == '@') cpos++;
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while ((ctag = strtok_mr(&cpos, "; ")) != NULL) {
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clientbound = false;
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if (*ctag == '+') {
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ctag++;
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clientbound = true;
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}
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if ((cval = strchr(ctag, '=')) != NULL) *(cval++) = '\0';
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for (unsigned int i = 0; i < sizeof(tagmps) / sizeof(struct tagmapping); i++) {
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if (!strcmp(ctag, tagmps[i].name)) {
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/* If the tag is present we point it to the value if given, or to the delimiter ('\0')
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* This is done for a few reasons. First, we have a non-null address so we show that
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* the tag is present and second, we have no value that way
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*/
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(*tagmps[i].assg).value = (cval != NULL) ? cval : ctag + strlen(ctag);
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(*tagmps[i].assg).clientbound = clientbound;
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}
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}
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}
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return 1;
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}
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#endif /* UIRC_IRCV3 */
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signed int
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Tok_user(char* str, IRC_User* out, bool useorig)
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{
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char* pos = (*str == ':') ? str + 1 : str;
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if ((out->host = strchr(pos, '@')) != NULL) *(out->host++) = '\0';
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if (useorig && (out->orig = strchr(pos, '%')) != NULL) *(out->orig++) = '\0';
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if ((out->user = strchr(pos, '!'))
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!= NULL) /* RFC2812 says this cannot be here without the host but RFC1459 says it can, we accept both options */
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*((char*) out->user++) = '\0';
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if (!*(out->nick = pos)) return ERR_UIRC_INVALID_FORMAT;
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/* NOTE: De-facto standard below
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* This assumes that every prefix without a '@host' and '!user' is itself a host prefix only
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* It might be a actual nickname, but this is the most common around every network
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* It is left to the user to decide and handle the result accordingly
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*/
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if (out->host == NULL && out->user == NULL) {
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out->host = out->nick;
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out->nick = NULL;
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}
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return 1;
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}
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