about summary refs log tree commit diff
path: root/chat.h
blob: 1dfe119282e4f2d86815f5084221b0e407db80b2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Additional permission under GNU GPL version 3 section 7:
 *
 * If you modify this Program, or any covered work, by linking or
 * combining it with LibreSSL (or a modified version of that library),
 * containing parts covered by the terms of the OpenSSL License and the
 * original SSLeay license, the licensors of this Program grant you
 * additional permission to convey the resulting work. Corresponding
 * Source for a non-source form of such a combination shall include the
 * source code for the parts of LibreSSL used as well as that of the
 * covered work.
 */

#include <assert.h>
#include <err.h>
#include <getopt.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <time.h>
#include <wchar.h>

#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit

typedef unsigned uint;
typedef unsigned char byte;

static inline void __attribute__((format(printf, 3, 4)))
catf(char *buf, size_t cap, const char *format, ...) {
	size_t len = strnlen(buf, cap);
	va_list ap;
	va_start(ap, format);
	assert(0 <= vsnprintf(&buf[len], cap - len, format, ap));
	va_end(ap);
}

enum Color {
	White, Black, Blue, Green, Red, Brown, Magenta, Orange,
	Yellow, LightGreen, Cyan, LightCyan, LightBlue, Pink, Gray, LightGray,
	Default = 99,
	ColorCap,
};

enum { None, Debug, Network, IDCap = 256 };
extern char *idNames[IDCap];
extern enum Color idColors[IDCap];
extern uint idNext;

static inline uint idFind(const char *name) {
	for (uint id = 0; id < idNext; ++id) {
		if (!strcmp(idNames[id], name)) return id;
	}
	return None;
}

static inline uint idFor(const char *name) {
	uint id = idFind(name);
	if (id) return id;
	if (idNext == IDCap) return Network;
	idNames[idNext] = strdup(name);
	idColors[idNext] = Default;
	if (!idNames[idNext]) err(EX_OSERR, "strdup");
	return idNext++;
}

extern uint32_t hashInit;
static inline enum Color hash(const char *str) {
	if (*str == '~') str++;
	uint32_t hash = hashInit;
	for (; *str; ++str) {
		hash = (hash << 5) | (hash >> 27);
		hash ^= *str;
		hash *= 0x27220A95;
	}
	return Blue + hash % 74;
}

extern struct Network {
	char *name;
	uint userLen;
	uint hostLen;
	char *chanTypes;
	char *prefixes;
	char *prefixModes;
	char *listModes;
	char *paramModes;
	char *setParamModes;
	char *channelModes;
	char excepts;
	char invex;
} network;

#define ENUM_CAP \
	X("causal.agency/consumer", CapConsumer) \
	X("chghost", CapChghost) \
	X("extended-join", CapExtendedJoin) \
	X("invite-notify", CapInviteNotify) \
	X("multi-prefix", CapMultiPrefix) \
	X("sasl", CapSASL) \
	X("server-time", CapServerTime) \
	X("userhost-in-names", CapUserhostInNames)

enum Cap {
#define X(name, id) BIT(id),
	ENUM_CAP
#undef X
};

extern struct Self {
	bool debug;
	bool restricted;
	size_t pos;
	enum Cap caps;
	char *plain;
	char *join;
	char *nick;
	char *user;
	char *host;
	enum Color color;
	char *quit;
} self;

static inline void set(char **field, const char *value) {
	free(*field);
	*field = strdup(value);
	if (!*field) err(EX_OSERR, "strdup");
}

#define ENUM_TAG \
	X("causal.agency/pos", TagPos) \
	X("time", TagTime)

enum Tag {
#define X(name, id) id,
	ENUM_TAG
#undef X
	TagCap,
};

enum { ParamCap = 254 };
struct Message {
	char *tags[TagCap];
	char *nick;
	char *user;
	char *host;
	char *cmd;
	char *params[ParamCap];
};

void ircConfig(bool insecure, FILE *cert, FILE *priv);
int ircConnect(const char *bind, const char *host, const char *port);
void ircRecv(void);
void ircSend(const char *ptr, size_t len);
void ircFormat(const char *format, ...)
	__attribute__((format(printf, 1, 2)));
void ircClose(void);

extern uint execID;
extern int execPipe[2];
extern int utilPipe[2];

enum { UtilCap = 16 };
struct Util {
	uint argc;
	const char *argv[UtilCap];
};

static inline void utilPush(struct Util *util, const char *arg) {
	if (1 + util->argc < UtilCap) {
		util->argv[util->argc++] = arg;
	} else {
		errx(EX_CONFIG, "too many utility arguments");
	}
}

extern struct Replies {
	uint away;
	uint ban;
	uint excepts;
	uint invex;
	uint join;
	uint list;
	uint mode;
	uint names;
	uint topic;
	uint whois;
} replies;

void handle(struct Message *msg);
void command(uint id, char *input);
const char *commandIsPrivmsg(uint id, const char *input);
const char *commandIsNotice(uint id, const char *input);
const char *commandIsAction(uint id, const char *input);
void commandCompleteAdd(void);

enum Heat { Ice, Cold, Warm, Hot };
extern struct Util uiNotifyUtil;
void uiInit(void);
void uiShow(void);
void uiHide(void);
void uiDraw(void);
void uiShowID(uint id);
void uiShowNum(uint num);
void uiMoveID(uint id, uint num);
void uiCloseID(uint id);
void uiCloseNum(uint id);
void uiRead(void);
void uiWrite(uint id, enum Heat heat, const time_t *time, const char *str);
void uiFormat(
	uint id, enum Heat heat, const time_t *time, const char *format, ...
) __attribute__((format(printf, 4, 5)));
void uiLoad(const char *name);
int uiSave(const char *name);

enum Edit {
	EditHead,
	EditTail,
	EditPrev,
	EditNext,
	EditPrevWord,
	EditNextWord,
	EditDeleteHead,
	EditDeleteTail,
	EditDeletePrev,
	EditDeleteNext,
	EditDeletePrevWord,
	EditDeleteNextWord,
	EditPaste,
	EditTranspose,
	EditCollapse,
	EditInsert,
	EditComplete,
	EditExpand,
	EditEnter,
};
void edit(uint id, enum Edit op, wchar_t ch);
char *editBuffer(size_t *pos);
void editCompleteAdd(void);

const char *complete(uint id, const char *prefix);
void completeAccept(void);
void completeReject(void);
void completeAdd(uint id, const char *str, enum Color color);
void completeTouch(uint id, const char *str, enum Color color);
void completeReplace(uint id, const char *old, const char *new);
void completeRemove(uint id, const char *str);
void completeClear(uint id);
uint completeID(const char *str);
enum Color completeColor(uint id, const char *str);

extern struct Util urlOpenUtil;
extern struct Util urlCopyUtil;
void urlScan(uint id, const char *nick, const char *mesg);
void urlOpenCount(uint id, uint count);
void urlOpenMatch(uint id, const char *str);
void urlCopyMatch(uint id, const char *str);

enum { IgnoreCap = 256 };
extern struct Ignore {
	size_t len;
	char *patterns[IgnoreCap];
} ignore;
const char *ignoreAdd(const char *pattern);
bool ignoreRemove(const char *pattern);
enum Heat ignoreCheck(enum Heat heat, uint id, const struct Message *msg);

extern bool logEnable;
void logFormat(uint id, const time_t *time, const char *format, ...)
	__attribute__((format(printf, 3, 4)));
void logClose(void);

FILE *configOpen(const char *path, const char *mode);
FILE *dataOpen(const char *path, const char *mode);
void dataMkdir(const char *path);

int getopt_config(
	int argc, char *const *argv,
	const char *optstring, const struct option *longopts, int *longindex
);

// Defined in libcrypto if missing from libc:
void explicit_bzero(void *b, size_t len);