forked from gregkh/bti
/
bti.c
551 lines (477 loc) · 12.1 KB
/
bti.c
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
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
/*
* Copyright (C) 2008 Greg Kroah-Hartman <greg@kroah.com>
*
* 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 version 2 of the License.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <sys/stat.h>
#include <curl/curl.h>
#include <readline/readline.h>
#include "bti_version.h"
#define zalloc(size) calloc(size, 1)
#define dbg(format, arg...) \
do { \
if (debug) \
printf("%s: " format , __func__ , ## arg ); \
} while (0)
static int debug = 0;
enum host {
HOST_TWITTER = 0,
HOST_IDENTICA = 1,
};
struct session {
char *password;
char *account;
char *tweet;
char *proxy;
char *time;
char *homedir;
int bash;
enum host host;
};
struct bti_curl_buffer {
char *data;
int length;
};
static void display_help(void)
{
fprintf(stdout, "bti - send tweet to twitter\n");
fprintf(stdout, "Version: " BTI_VERSION "\n");
fprintf(stdout, "Usage:\n");
fprintf(stdout, " bti [options]\n");
fprintf(stdout, "options are:\n");
fprintf(stdout, " --account accountname\n");
fprintf(stdout, " --password password\n");
fprintf(stdout, " --proxy PROXY:PORT\n");
fprintf(stdout, " --host HOST\n");
fprintf(stdout, " --bash\n");
fprintf(stdout, " --debug\n");
fprintf(stdout, " --version\n");
fprintf(stdout, " --help\n");
}
static void display_version(void)
{
fprintf(stdout, "bti - version %s\n", BTI_VERSION);
}
static char *get_string_from_stdin(void)
{
static char *string = (char *)NULL;
if (string) {
free(string);
string = (char *)NULL;
}
string = readline("tweet: ");
return string;
}
static struct session *session_alloc(void)
{
struct session *session;
session = zalloc(sizeof(*session));
if (!session)
return NULL;
return session;
}
static void session_free(struct session *session)
{
if (!session)
return;
free(session->password);
free(session->account);
free(session->tweet);
free(session->proxy);
free(session->time);
free(session->homedir);
free(session);
}
static struct bti_curl_buffer *bti_curl_buffer_alloc(void)
{
struct bti_curl_buffer *buffer;
buffer = zalloc(sizeof(*buffer));
if (!buffer)
return NULL;
/* start out with a data buffer of 1 byte to
* make the buffer fill logic simpler */
buffer->data = zalloc(1);
if (!buffer->data) {
free(buffer);
return NULL;
}
buffer->length = 0;
return buffer;
}
static void bti_curl_buffer_free(struct bti_curl_buffer *buffer)
{
if (!buffer)
return;
free(buffer->data);
free(buffer);
}
static const char *twitter_url = "https://twitter.com/statuses/update.xml";
static const char *identica_url = "http://identi.ca/api/statuses/update.xml";
static CURL *curl_init(void)
{
CURL *curl;
curl = curl_easy_init();
if (!curl) {
fprintf(stderr, "Can not init CURL!\n");
return NULL;
}
/* some ssl sanity checks on the connection we are making */
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
return curl;
}
size_t curl_callback(void *buffer, size_t size, size_t nmemb, void *userp)
{
struct bti_curl_buffer *curl_buf = userp;
size_t buffer_size = size * nmemb;
char *temp;
if ((!buffer) || (!buffer_size) || (!curl_buf))
return -EINVAL;
/* add to the data we already have */
temp = zalloc(curl_buf->length + buffer_size + 1);
if (!temp)
return -ENOMEM;
memcpy(temp, curl_buf->data, curl_buf->length);
free(curl_buf->data);
curl_buf->data = temp;
memcpy(&curl_buf->data[curl_buf->length], (char *)buffer, buffer_size);
curl_buf->length += buffer_size;
dbg("%s\n", curl_buf->data);
return buffer_size;
}
static int send_tweet(struct session *session)
{
char user_password[500];
char data[500];
struct bti_curl_buffer *curl_buf;
CURL *curl = NULL;
CURLcode res;
struct curl_httppost *formpost = NULL;
struct curl_httppost *lastptr = NULL;
struct curl_slist *slist = NULL;
if (!session)
return -EINVAL;
curl_buf = bti_curl_buffer_alloc();
if (!curl_buf)
return -ENOMEM;
snprintf(user_password, sizeof(user_password), "%s:%s",
session->account, session->password);
snprintf(data, sizeof(data), "status=\"%s\"", session->tweet);
curl = curl_init();
if (!curl)
return -EINVAL;
curl_formadd(&formpost, &lastptr,
CURLFORM_COPYNAME, "status",
CURLFORM_COPYCONTENTS, session->tweet,
CURLFORM_END);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
switch (session->host) {
case HOST_TWITTER:
curl_easy_setopt(curl, CURLOPT_URL, twitter_url);
/*
* twitter doesn't like the "Expect: 100-continue" header
* anymore, so turn it off.
*/
slist = curl_slist_append(slist, "Expect:");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist);
break;
case HOST_IDENTICA:
curl_easy_setopt(curl, CURLOPT_URL, identica_url);
break;
}
if (session->proxy)
curl_easy_setopt(curl, CURLOPT_PROXY, session->proxy);
if (debug)
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
curl_easy_setopt(curl, CURLOPT_USERPWD, user_password);
dbg("user_password = %s\n", user_password);
dbg("data = %s\n", data);
dbg("proxy = %s\n", session->proxy);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_callback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, curl_buf);
res = curl_easy_perform(curl);
if (res && !session->bash) {
fprintf(stderr, "error(%d) trying to send tweet\n", res);
return -EINVAL;
}
curl_easy_cleanup(curl);
curl_formfree(formpost);
bti_curl_buffer_free(curl_buf);
return 0;
}
static void parse_configfile(struct session *session)
{
FILE *config_file;
char *line = NULL;
size_t len = 0;
char *account = NULL;
char *password = NULL;
char *host = NULL;
char *proxy = NULL;
char *file;
/* config file is ~/.bti */
file = alloca(strlen(session->homedir) + 7);
sprintf(file, "%s/.bti", session->homedir);
config_file = fopen(file, "r");
/* No error if file does not exist or is unreadable. */
if (config_file == NULL)
return;
do {
ssize_t n = getline(&line, &len, config_file);
if (n < 0)
break;
if (line[n - 1] == '\n')
line[n - 1] = '\0';
/* Parse file. Format is the usual value pairs:
account=name
passwort=value
# is a comment character
*/
*strchrnul(line, '#') = '\0';
char *c = line;
while (isspace(*c))
c++;
/* Ignore blank lines. */
if (c[0] == '\0')
continue;
if (!strncasecmp(c, "account", 7) && (c[7] == '=')) {
c += 8;
if (c[0] != '\0')
account = strdup(c);
} else if (!strncasecmp(c, "password", 8) &&
(c[8] == '=')) {
c += 9;
if (c[0] != '\0')
password = strdup(c);
} else if (!strncasecmp(c, "host", 4) &&
(c[4] == '=')) {
c += 5;
if (c[0] != '\0')
host = strdup(c);
} else if (!strncasecmp(c, "proxy", 5) &&
(c[5] == '=')) {
c += 6;
if (c[0] != '\0')
proxy = strdup(c);
}
} while (!feof(config_file));
if (password)
session->password = password;
if (account)
session->account = account;
if (host) {
if (strcasecmp(host, "twitter") == 0)
session->host = HOST_TWITTER;
if (strcasecmp(host, "identica") == 0)
session->host = HOST_IDENTICA;
free(host);
}
if (proxy) {
if (session->proxy)
free(session->proxy);
session->proxy = proxy;
}
/* Free buffer and close file. */
free(line);
fclose(config_file);
}
static void log_session(struct session *session, int retval)
{
FILE *log_file;
char *filename;
char *host;
/* logfile is ~/.bti.log */
filename = alloca(strlen(session->homedir) + 10);
sprintf(filename, "%s/.bti.log", session->homedir);
log_file = fopen(filename, "a+");
if (log_file == NULL)
return;
switch (session->host) {
case HOST_TWITTER:
host = "twitter";
break;
case HOST_IDENTICA:
host = "identi.ca";
break;
default:
host = "unknown";
break;
}
if (retval)
fprintf(log_file, "%s: host=%s tweet failed\n", session->time, host);
else
fprintf(log_file, "%s: host=%s tweet=%s\n", session->time, host, session->tweet);
fclose(log_file);
}
int main(int argc, char *argv[], char *envp[])
{
static const struct option options[] = {
{ "debug", 0, NULL, 'd' },
{ "account", 1, NULL, 'a' },
{ "password", 1, NULL, 'p' },
{ "host", 1, NULL, 'H' },
{ "proxy", 1, NULL, 'P' },
{ "help", 0, NULL, 'h' },
{ "bash", 0, NULL, 'b' },
{ "version", 0, NULL, 'v' },
{ }
};
struct session *session;
pid_t child;
char *tweet;
int retval = 0;
int option;
char *http_proxy;
time_t t;
#if 0
char *pwd = getenv("PWD");
char *dir;
#endif
rl_bind_key('\t', rl_insert);
session = session_alloc();
if (!session) {
fprintf(stderr, "no more memory...\n");
return -1;
}
/* get the current time so that we can log it later */
time(&t);
session->time = strdup(ctime(&t));
session->time[strlen(session->time)-1] = 0x00;
session->homedir = strdup(getenv("HOME"));
curl_global_init(CURL_GLOBAL_ALL);
/* Set environment variables first, before reading command line options
* or config file values. */
http_proxy = getenv("http_proxy");
if (http_proxy) {
if (session->proxy)
free(session->proxy);
session->proxy = strdup(http_proxy);
dbg("http_proxy = %s\n", session->proxy);
}
parse_configfile(session);
while (1) {
option = getopt_long_only(argc, argv, "dqe:p:P:H:a:h",
options, NULL);
if (option == -1)
break;
switch (option) {
case 'd':
debug = 1;
break;
case 'a':
if (session->account)
free(session->account);
session->account = strdup(optarg);
dbg("account = %s\n", session->account);
break;
case 'p':
if (session->password)
free(session->password);
session->password = strdup(optarg);
dbg("password = %s\n", session->password);
break;
case 'P':
if (session->proxy)
free(session->proxy);
session->proxy = strdup(optarg);
dbg("proxy = %s\n", session->proxy);
break;
case 'H':
if (strcasecmp(optarg, "twitter") == 0)
session->host = HOST_TWITTER;
if (strcasecmp(optarg, "identica") == 0)
session->host = HOST_IDENTICA;
dbg("host = %d\n", session->host);
break;
case 'b':
session->bash= 1;
break;
case 'h':
display_help();
goto exit;
case 'v':
display_version();
goto exit;
default:
display_help();
goto exit;
}
}
if (!session->account) {
fprintf(stdout, "Enter twitter account: ");
session->account = get_string_from_stdin();
}
if (!session->password) {
fprintf(stdout, "Enter twitter password: ");
session->password = get_string_from_stdin();
}
#if 0
/* get the current working directory basename */
if (strcmp(pwd, home) == 0)
dir = "~";
else {
dir = strrchr(pwd, '/');
if (dir)
dir++;
else
dir = "?";
}
#endif
tweet = get_string_from_stdin();
if (!tweet || strlen(tweet) == 0) {
dbg("no tweet?\n");
return -1;
}
// session->tweet = zalloc(strlen(tweet) + strlen(dir) + 10);
session->tweet = zalloc(strlen(tweet) + 10);
/* if --bash is specified, add the "PWD $ " to
* the start of the tweet. */
if (session->bash)
// sprintf(session->tweet, "%s $ %s", dir, tweet);
sprintf(session->tweet, "$ %s", tweet);
else
sprintf(session->tweet, "%s", tweet);
free(tweet);
dbg("account = %s\n", session->account);
dbg("password = %s\n", session->password);
dbg("tweet = %s\n", session->tweet);
dbg("host = %d\n", session->host);
/* fork ourself so that the main shell can get on
* with it's life as we try to connect and handle everything
*/
if (session->bash) {
child = fork();
if (child) {
dbg("child is %d\n", child);
exit(0);
}
}
retval = send_tweet(session);
if (retval && !session->bash)
fprintf(stderr, "tweet failed\n");
// log_session(session, retval);
exit:
session_free(session);
return retval;;
}