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
|
/* 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/>.
*/
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "chat.h"
static const char *Pattern = {
"("
"cvs|"
"ftp|"
"git|"
"gopher|"
"http|"
"https|"
"irc|"
"ircs|"
"magnet|"
"sftp|"
"ssh|"
"svn|"
"telnet|"
"vnc"
")"
":[^[:space:]>\"]+"
};
static regex_t Regex;
static void compile(void) {
static bool compiled;
if (compiled) return;
compiled = true;
int error = regcomp(&Regex, Pattern, REG_EXTENDED);
if (!error) return;
char buf[256];
regerror(error, &Regex, buf, sizeof(buf));
errx(EX_SOFTWARE, "regcomp: %s: %s", buf, Pattern);
}
struct URL {
size_t id;
char *nick;
char *url;
};
enum { Cap = 32 };
static struct {
struct URL urls[Cap];
size_t len;
} ring;
static_assert(!(Cap & (Cap - 1)), "Cap is power of two");
static void push(size_t id, const char *nick, const char *str, size_t len) {
struct URL *url = &ring.urls[ring.len++ % Cap];
free(url->nick);
free(url->url);
url->id = id;
url->nick = NULL;
if (nick) {
url->nick = strdup(nick);
if (!url->nick) err(EX_OSERR, "strdup");
}
url->url = strndup(str, len);
if (!url->url) err(EX_OSERR, "strndup");
}
void urlScan(size_t id, const char *nick, const char *mesg) {
if (!mesg) return;
compile();
regmatch_t match = {0};
for (const char *ptr = mesg; *ptr; ptr += match.rm_eo) {
if (regexec(&Regex, ptr, 1, &match, 0)) break;
push(id, nick, &ptr[match.rm_so], match.rm_eo - match.rm_so);
}
}
const char *urlOpenUtil;
static const char *OpenUtils[] = { "open", "xdg-open" };
static void urlOpen(const char *url) {
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
close(STDIN_FILENO);
dup2(procPipe[1], STDOUT_FILENO);
dup2(procPipe[1], STDERR_FILENO);
if (urlOpenUtil) {
execlp(urlOpenUtil, urlOpenUtil, url, NULL);
warn("%s", urlOpenUtil);
_exit(EX_CONFIG);
}
for (size_t i = 0; i < ARRAY_LEN(OpenUtils); ++i) {
execlp(OpenUtils[i], OpenUtils[i], url, NULL);
if (errno != ENOENT) {
warn("%s", OpenUtils[i]);
_exit(EX_CONFIG);
}
}
warnx("no open utility found");
_exit(EX_CONFIG);
}
const char *urlCopyUtil;
static const char *CopyUtils[] = { "pbcopy", "wl-copy", "xclip", "xsel" };
static void urlCopy(const char *url) {
int rw[2];
int error = pipe(rw);
if (error) err(EX_OSERR, "pipe");
ssize_t len = write(rw[1], url, strlen(url));
if (len < 0) err(EX_IOERR, "write");
error = close(rw[1]);
if (error) err(EX_IOERR, "close");
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) {
close(rw[0]);
return;
}
dup2(rw[0], STDIN_FILENO);
dup2(procPipe[1], STDOUT_FILENO);
dup2(procPipe[1], STDERR_FILENO);
close(rw[0]);
if (urlCopyUtil) {
execlp(urlCopyUtil, urlCopyUtil, NULL);
warn("%s", urlCopyUtil);
_exit(EX_CONFIG);
}
for (size_t i = 0; i < ARRAY_LEN(CopyUtils); ++i) {
execlp(CopyUtils[i], CopyUtils[i], NULL);
if (errno != ENOENT) {
warn("%s", CopyUtils[i]);
_exit(EX_CONFIG);
}
}
warnx("no copy utility found");
_exit(EX_CONFIG);
}
void urlOpenCount(size_t id, size_t count) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
urlOpen(url->url);
if (!--count) break;
}
}
void urlOpenMatch(size_t id, const char *str) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
if ((url->nick && !strcmp(url->nick, str)) || strstr(url->url, str)) {
urlOpen(url->url);
break;
}
}
}
void urlCopyMatch(size_t id, const char *str) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
if (
!str
|| (url->nick && !strcmp(url->nick, str))
|| strstr(url->url, str)
) {
urlCopy(url->url);
break;
}
}
}
|