103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
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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 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 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
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#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit
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typedef unsigned char byte;
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#define ENUM_CAP \
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X("sasl", CapSASL) \
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X("server-time", CapServerTime) \
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X("userhost-in-names", CapUserhostInNames)
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enum Cap {
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#define X(name, id) BIT(id),
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ENUM_CAP
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#undef X
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};
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extern struct Self {
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enum Cap caps;
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char *plain;
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char *nick;
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const char *join;
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} self;
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#define ENUM_TAG \
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X("time", TagTime)
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enum Tag {
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#define X(name, id) id,
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ENUM_TAG
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#undef X
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TagCap,
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};
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enum { ParamCap = 15 };
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struct Message {
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char *tags[TagCap];
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char *nick;
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char *user;
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char *host;
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char *cmd;
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char *params[ParamCap];
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};
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void ircConfig(bool insecure, const char *cert, const char *priv);
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int ircConnect(const char *host, const char *port);
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void ircRecv(void);
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void ircSend(const char *ptr, size_t len);
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void ircFormat(const char *format, ...)
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__attribute__((format(printf, 1, 2)));
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void handle(struct Message msg);
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#define BASE64_SIZE(len) (1 + ((len) + 2) / 3 * 4)
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static const char Base64[64] = {
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
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};
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static inline void base64(char *dst, const byte *src, size_t len) {
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size_t i = 0;
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while (len > 2) {
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dst[i++] = Base64[0x3F & (src[0] >> 2)];
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dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
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dst[i++] = Base64[0x3F & (src[1] << 2 | src[2] >> 6)];
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dst[i++] = Base64[0x3F & src[2]];
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src += 3;
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len -= 3;
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}
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if (len) {
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dst[i++] = Base64[0x3F & (src[0] >> 2)];
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if (len > 1) {
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dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
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dst[i++] = Base64[0x3F & (src[1] << 2)];
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} else {
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dst[i++] = Base64[0x3F & (src[0] << 4)];
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dst[i++] = '=';
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}
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dst[i++] = '=';
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}
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dst[i] = '\0';
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}
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// Defined in libcrypto if missing from libc:
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void explicit_bzero(void *b, size_t len);
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