| 1 |
/* |
| 2 |
* Copyright (C) 2008 Greg Kroah-Hartman <greg@kroah.com> |
| 3 |
* |
| 4 |
* This program is free software; you can redistribute it and/or modify it |
| 5 |
* under the terms of the GNU General Public License as published by the |
| 6 |
* Free Software Foundation version 2 of the License. |
| 7 |
* |
| 8 |
* This program is distributed in the hope that it will be useful, but |
| 9 |
* WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 |
* General Public License for more details. |
| 12 |
* |
| 13 |
* You should have received a copy of the GNU General Public License along |
| 14 |
* with this program; if not, write to the Free Software Foundation, Inc., |
| 15 |
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 |
*/ |
| 17 |
|
| 18 |
#include <stdio.h> |
| 19 |
#include <stdlib.h> |
| 20 |
#include <stddef.h> |
| 21 |
#include <string.h> |
| 22 |
#include <getopt.h> |
| 23 |
#include <errno.h> |
| 24 |
#include <ctype.h> |
| 25 |
#include <fcntl.h> |
| 26 |
#include <unistd.h> |
| 27 |
#include <time.h> |
| 28 |
#include <sys/stat.h> |
| 29 |
#include <curl/curl.h> |
| 30 |
#include <readline/readline.h> |
| 31 |
#include "bti_version.h" |
| 32 |
|
| 33 |
|
| 34 |
#define zalloc(size) calloc(size, 1) |
| 35 |
|
| 36 |
#define dbg(format, arg...) \ |
| 37 |
do { \ |
| 38 |
if (debug) \ |
| 39 |
printf("%s: " format , __func__ , ## arg); \ |
| 40 |
} while (0) |
| 41 |
|
| 42 |
|
| 43 |
static int debug; |
| 44 |
|
| 45 |
enum host { |
| 46 |
HOST_TWITTER = 0, |
| 47 |
HOST_IDENTICA = 1, |
| 48 |
}; |
| 49 |
|
| 50 |
struct session { |
| 51 |
char *password; |
| 52 |
char *account; |
| 53 |
char *tweet; |
| 54 |
char *proxy; |
| 55 |
char *time; |
| 56 |
char *homedir; |
| 57 |
char *logfile; |
| 58 |
int bash; |
| 59 |
enum host host; |
| 60 |
}; |
| 61 |
|
| 62 |
struct bti_curl_buffer { |
| 63 |
char *data; |
| 64 |
int length; |
| 65 |
}; |
| 66 |
|
| 67 |
static void display_help(void) |
| 68 |
{ |
| 69 |
fprintf(stdout, "bti - send tweet to twitter\n"); |
| 70 |
fprintf(stdout, "Version: " BTI_VERSION "\n"); |
| 71 |
fprintf(stdout, "Usage:\n"); |
| 72 |
fprintf(stdout, " bti [options]\n"); |
| 73 |
fprintf(stdout, "options are:\n"); |
| 74 |
fprintf(stdout, " --account accountname\n"); |
| 75 |
fprintf(stdout, " --password password\n"); |
| 76 |
fprintf(stdout, " --proxy PROXY:PORT\n"); |
| 77 |
fprintf(stdout, " --host HOST\n"); |
| 78 |
fprintf(stdout, " --logfile logfile\n"); |
| 79 |
fprintf(stdout, " --bash\n"); |
| 80 |
fprintf(stdout, " --debug\n"); |
| 81 |
fprintf(stdout, " --version\n"); |
| 82 |
fprintf(stdout, " --help\n"); |
| 83 |
} |
| 84 |
|
| 85 |
static void display_version(void) |
| 86 |
{ |
| 87 |
fprintf(stdout, "bti - version %s\n", BTI_VERSION); |
| 88 |
} |
| 89 |
|
| 90 |
static char *get_string_from_stdin(char *prompt) |
| 91 |
{ |
| 92 |
static char *string = (char *)NULL; |
| 93 |
if (string) { |
| 94 |
free(string); |
| 95 |
string = (char *)NULL; |
| 96 |
} |
| 97 |
|
| 98 |
string = readline(prompt); |
| 99 |
|
| 100 |
return string; |
| 101 |
} |
| 102 |
|
| 103 |
static struct session *session_alloc(void) |
| 104 |
{ |
| 105 |
struct session *session; |
| 106 |
|
| 107 |
session = zalloc(sizeof(*session)); |
| 108 |
if (!session) |
| 109 |
return NULL; |
| 110 |
return session; |
| 111 |
} |
| 112 |
|
| 113 |
static void session_free(struct session *session) |
| 114 |
{ |
| 115 |
if (!session) |
| 116 |
return; |
| 117 |
free(session->password); |
| 118 |
free(session->account); |
| 119 |
free(session->tweet); |
| 120 |
free(session->proxy); |
| 121 |
free(session->time); |
| 122 |
free(session->homedir); |
| 123 |
free(session); |
| 124 |
} |
| 125 |
|
| 126 |
static struct bti_curl_buffer *bti_curl_buffer_alloc(void) |
| 127 |
{ |
| 128 |
struct bti_curl_buffer *buffer; |
| 129 |
|
| 130 |
buffer = zalloc(sizeof(*buffer)); |
| 131 |
if (!buffer) |
| 132 |
return NULL; |
| 133 |
|
| 134 |
/* start out with a data buffer of 1 byte to |
| 135 |
* make the buffer fill logic simpler */ |
| 136 |
buffer->data = zalloc(1); |
| 137 |
if (!buffer->data) { |
| 138 |
free(buffer); |
| 139 |
return NULL; |
| 140 |
} |
| 141 |
buffer->length = 0; |
| 142 |
return buffer; |
| 143 |
} |
| 144 |
|
| 145 |
static void bti_curl_buffer_free(struct bti_curl_buffer *buffer) |
| 146 |
{ |
| 147 |
if (!buffer) |
| 148 |
return; |
| 149 |
free(buffer->data); |
| 150 |
free(buffer); |
| 151 |
} |
| 152 |
|
| 153 |
static const char *twitter_url = "https://twitter.com/statuses/update.xml"; |
| 154 |
static const char *identica_url = "http://identi.ca/api/statuses/update.xml"; |
| 155 |
|
| 156 |
static CURL *curl_init(void) |
| 157 |
{ |
| 158 |
CURL *curl; |
| 159 |
|
| 160 |
curl = curl_easy_init(); |
| 161 |
if (!curl) { |
| 162 |
fprintf(stderr, "Can not init CURL!\n"); |
| 163 |
return NULL; |
| 164 |
} |
| 165 |
/* some ssl sanity checks on the connection we are making */ |
| 166 |
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0); |
| 167 |
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0); |
| 168 |
return curl; |
| 169 |
} |
| 170 |
|
| 171 |
size_t curl_callback(void *buffer, size_t size, size_t nmemb, void *userp) |
| 172 |
{ |
| 173 |
struct bti_curl_buffer *curl_buf = userp; |
| 174 |
size_t buffer_size = size * nmemb; |
| 175 |
char *temp; |
| 176 |
|
| 177 |
if ((!buffer) || (!buffer_size) || (!curl_buf)) |
| 178 |
return -EINVAL; |
| 179 |
|
| 180 |
/* add to the data we already have */ |
| 181 |
temp = zalloc(curl_buf->length + buffer_size + 1); |
| 182 |
if (!temp) |
| 183 |
return -ENOMEM; |
| 184 |
|
| 185 |
memcpy(temp, curl_buf->data, curl_buf->length); |
| 186 |
free(curl_buf->data); |
| 187 |
curl_buf->data = temp; |
| 188 |
memcpy(&curl_buf->data[curl_buf->length], (char *)buffer, buffer_size); |
| 189 |
curl_buf->length += buffer_size; |
| 190 |
|
| 191 |
dbg("%s\n", curl_buf->data); |
| 192 |
|
| 193 |
return buffer_size; |
| 194 |
} |
| 195 |
|
| 196 |
static int send_tweet(struct session *session) |
| 197 |
{ |
| 198 |
char user_password[500]; |
| 199 |
char data[500]; |
| 200 |
struct bti_curl_buffer *curl_buf; |
| 201 |
CURL *curl = NULL; |
| 202 |
CURLcode res; |
| 203 |
struct curl_httppost *formpost = NULL; |
| 204 |
struct curl_httppost *lastptr = NULL; |
| 205 |
struct curl_slist *slist = NULL; |
| 206 |
|
| 207 |
if (!session) |
| 208 |
return -EINVAL; |
| 209 |
|
| 210 |
curl_buf = bti_curl_buffer_alloc(); |
| 211 |
if (!curl_buf) |
| 212 |
return -ENOMEM; |
| 213 |
|
| 214 |
snprintf(user_password, sizeof(user_password), "%s:%s", |
| 215 |
session->account, session->password); |
| 216 |
snprintf(data, sizeof(data), "status=\"%s\"", session->tweet); |
| 217 |
|
| 218 |
curl = curl_init(); |
| 219 |
if (!curl) |
| 220 |
return -EINVAL; |
| 221 |
|
| 222 |
curl_formadd(&formpost, &lastptr, |
| 223 |
CURLFORM_COPYNAME, "status", |
| 224 |
CURLFORM_COPYCONTENTS, session->tweet, |
| 225 |
CURLFORM_END); |
| 226 |
|
| 227 |
curl_formadd(&formpost, &lastptr, |
| 228 |
CURLFORM_COPYNAME, "source", |
| 229 |
CURLFORM_COPYCONTENTS, "bti", |
| 230 |
CURLFORM_END); |
| 231 |
|
| 232 |
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost); |
| 233 |
|
| 234 |
switch (session->host) { |
| 235 |
case HOST_TWITTER: |
| 236 |
curl_easy_setopt(curl, CURLOPT_URL, twitter_url); |
| 237 |
/* |
| 238 |
* twitter doesn't like the "Expect: 100-continue" header |
| 239 |
* anymore, so turn it off. |
| 240 |
*/ |
| 241 |
slist = curl_slist_append(slist, "Expect:"); |
| 242 |
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist); |
| 243 |
break; |
| 244 |
case HOST_IDENTICA: |
| 245 |
curl_easy_setopt(curl, CURLOPT_URL, identica_url); |
| 246 |
break; |
| 247 |
} |
| 248 |
|
| 249 |
if (session->proxy) |
| 250 |
curl_easy_setopt(curl, CURLOPT_PROXY, session->proxy); |
| 251 |
|
| 252 |
if (debug) |
| 253 |
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1); |
| 254 |
curl_easy_setopt(curl, CURLOPT_USERPWD, user_password); |
| 255 |
|
| 256 |
dbg("user_password = %s\n", user_password); |
| 257 |
dbg("data = %s\n", data); |
| 258 |
dbg("proxy = %s\n", session->proxy); |
| 259 |
|
| 260 |
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_callback); |
| 261 |
curl_easy_setopt(curl, CURLOPT_WRITEDATA, curl_buf); |
| 262 |
res = curl_easy_perform(curl); |
| 263 |
if (res && !session->bash) { |
| 264 |
fprintf(stderr, "error(%d) trying to send tweet\n", res); |
| 265 |
return -EINVAL; |
| 266 |
} |
| 267 |
|
| 268 |
curl_easy_cleanup(curl); |
| 269 |
curl_formfree(formpost); |
| 270 |
bti_curl_buffer_free(curl_buf); |
| 271 |
return 0; |
| 272 |
} |
| 273 |
|
| 274 |
static void parse_configfile(struct session *session) |
| 275 |
{ |
| 276 |
FILE *config_file; |
| 277 |
char *line = NULL; |
| 278 |
size_t len = 0; |
| 279 |
char *account = NULL; |
| 280 |
char *password = NULL; |
| 281 |
char *host = NULL; |
| 282 |
char *proxy = NULL; |
| 283 |
char *logfile = NULL; |
| 284 |
char *file; |
| 285 |
|
| 286 |
/* config file is ~/.bti */ |
| 287 |
file = alloca(strlen(session->homedir) + 7); |
| 288 |
|
| 289 |
sprintf(file, "%s/.bti", session->homedir); |
| 290 |
|
| 291 |
config_file = fopen(file, "r"); |
| 292 |
|
| 293 |
/* No error if file does not exist or is unreadable. */ |
| 294 |
if (config_file == NULL) |
| 295 |
return; |
| 296 |
|
| 297 |
do { |
| 298 |
ssize_t n = getline(&line, &len, config_file); |
| 299 |
if (n < 0) |
| 300 |
break; |
| 301 |
if (line[n - 1] == '\n') |
| 302 |
line[n - 1] = '\0'; |
| 303 |
/* Parse file. Format is the usual value pairs: |
| 304 |
account=name |
| 305 |
passwort=value |
| 306 |
# is a comment character |
| 307 |
*/ |
| 308 |
*strchrnul(line, '#') = '\0'; |
| 309 |
char *c = line; |
| 310 |
while (isspace(*c)) |
| 311 |
c++; |
| 312 |
/* Ignore blank lines. */ |
| 313 |
if (c[0] == '\0') |
| 314 |
continue; |
| 315 |
|
| 316 |
if (!strncasecmp(c, "account", 7) && (c[7] == '=')) { |
| 317 |
c += 8; |
| 318 |
if (c[0] != '\0') |
| 319 |
account = strdup(c); |
| 320 |
} else if (!strncasecmp(c, "password", 8) && |
| 321 |
(c[8] == '=')) { |
| 322 |
c += 9; |
| 323 |
if (c[0] != '\0') |
| 324 |
password = strdup(c); |
| 325 |
} else if (!strncasecmp(c, "host", 4) && |
| 326 |
(c[4] == '=')) { |
| 327 |
c += 5; |
| 328 |
if (c[0] != '\0') |
| 329 |
host = strdup(c); |
| 330 |
} else if (!strncasecmp(c, "proxy", 5) && |
| 331 |
(c[5] == '=')) { |
| 332 |
c += 6; |
| 333 |
if (c[0] != '\0') |
| 334 |
proxy = strdup(c); |
| 335 |
} else if (!strncasecmp(c, "logfile", 7) && |
| 336 |
(c[7] == '=')) { |
| 337 |
c += 8; |
| 338 |
if (c[0] != '\0') |
| 339 |
logfile = strdup(c); |
| 340 |
} |
| 341 |
} while (!feof(config_file)); |
| 342 |
|
| 343 |
if (password) |
| 344 |
session->password = password; |
| 345 |
if (account) |
| 346 |
session->account = account; |
| 347 |
if (host) { |
| 348 |
if (strcasecmp(host, "twitter") == 0) |
| 349 |
session->host = HOST_TWITTER; |
| 350 |
if (strcasecmp(host, "identica") == 0) |
| 351 |
session->host = HOST_IDENTICA; |
| 352 |
free(host); |
| 353 |
} |
| 354 |
if (proxy) { |
| 355 |
if (session->proxy) |
| 356 |
free(session->proxy); |
| 357 |
session->proxy = proxy; |
| 358 |
} |
| 359 |
if (logfile) |
| 360 |
session->logfile = logfile; |
| 361 |
|
| 362 |
/* Free buffer and close file. */ |
| 363 |
free(line); |
| 364 |
fclose(config_file); |
| 365 |
} |
| 366 |
|
| 367 |
static void log_session(struct session *session, int retval) |
| 368 |
{ |
| 369 |
FILE *log_file; |
| 370 |
char *filename; |
| 371 |
char *host; |
| 372 |
|
| 373 |
/* Only log something if we have a log file set */ |
| 374 |
if (!session->logfile) |
| 375 |
return; |
| 376 |
|
| 377 |
filename = alloca(strlen(session->homedir) + |
| 378 |
strlen(session->logfile) + 3); |
| 379 |
|
| 380 |
sprintf(filename, "%s/%s", session->homedir, session->logfile); |
| 381 |
|
| 382 |
log_file = fopen(filename, "a+"); |
| 383 |
if (log_file == NULL) |
| 384 |
return; |
| 385 |
switch (session->host) { |
| 386 |
case HOST_TWITTER: |
| 387 |
host = "twitter"; |
| 388 |
break; |
| 389 |
case HOST_IDENTICA: |
| 390 |
host = "identi.ca"; |
| 391 |
break; |
| 392 |
default: |
| 393 |
host = "unknown"; |
| 394 |
break; |
| 395 |
} |
| 396 |
|
| 397 |
if (retval) |
| 398 |
fprintf(log_file, "%s: host=%s tweet failed\n", |
| 399 |
session->time, host); |
| 400 |
else |
| 401 |
fprintf(log_file, "%s: host=%s tweet=%s\n", |
| 402 |
session->time, host, session->tweet); |
| 403 |
|
| 404 |
fclose(log_file); |
| 405 |
} |
| 406 |
|
| 407 |
int main(int argc, char *argv[], char *envp[]) |
| 408 |
{ |
| 409 |
static const struct option options[] = { |
| 410 |
{ "debug", 0, NULL, 'd' }, |
| 411 |
{ "account", 1, NULL, 'a' }, |
| 412 |
{ "password", 1, NULL, 'p' }, |
| 413 |
{ "host", 1, NULL, 'H' }, |
| 414 |
{ "proxy", 1, NULL, 'P' }, |
| 415 |
{ "logfile", 1, NULL, 'L' }, |
| 416 |
{ "help", 0, NULL, 'h' }, |
| 417 |
{ "bash", 0, NULL, 'b' }, |
| 418 |
{ "version", 0, NULL, 'v' }, |
| 419 |
{ } |
| 420 |
}; |
| 421 |
struct session *session; |
| 422 |
pid_t child; |
| 423 |
char *tweet; |
| 424 |
int retval = 0; |
| 425 |
int option; |
| 426 |
char *http_proxy; |
| 427 |
time_t t; |
| 428 |
|
| 429 |
debug = 0; |
| 430 |
rl_bind_key('\t', rl_insert); |
| 431 |
|
| 432 |
session = session_alloc(); |
| 433 |
if (!session) { |
| 434 |
fprintf(stderr, "no more memory...\n"); |
| 435 |
return -1; |
| 436 |
} |
| 437 |
|
| 438 |
/* get the current time so that we can log it later */ |
| 439 |
time(&t); |
| 440 |
session->time = strdup(ctime(&t)); |
| 441 |
session->time[strlen(session->time)-1] = 0x00; |
| 442 |
|
| 443 |
session->homedir = strdup(getenv("HOME")); |
| 444 |
|
| 445 |
curl_global_init(CURL_GLOBAL_ALL); |
| 446 |
|
| 447 |
/* Set environment variables first, before reading command line options |
| 448 |
* or config file values. */ |
| 449 |
http_proxy = getenv("http_proxy"); |
| 450 |
if (http_proxy) { |
| 451 |
if (session->proxy) |
| 452 |
free(session->proxy); |
| 453 |
session->proxy = strdup(http_proxy); |
| 454 |
dbg("http_proxy = %s\n", session->proxy); |
| 455 |
} |
| 456 |
|
| 457 |
parse_configfile(session); |
| 458 |
|
| 459 |
while (1) { |
| 460 |
option = getopt_long_only(argc, argv, "dqe:p:P:H:a:h", |
| 461 |
options, NULL); |
| 462 |
if (option == -1) |
| 463 |
break; |
| 464 |
switch (option) { |
| 465 |
case 'd': |
| 466 |
debug = 1; |
| 467 |
break; |
| 468 |
case 'a': |
| 469 |
if (session->account) |
| 470 |
free(session->account); |
| 471 |
session->account = strdup(optarg); |
| 472 |
dbg("account = %s\n", session->account); |
| 473 |
break; |
| 474 |
case 'p': |
| 475 |
if (session->password) |
| 476 |
free(session->password); |
| 477 |
session->password = strdup(optarg); |
| 478 |
dbg("password = %s\n", session->password); |
| 479 |
break; |
| 480 |
case 'P': |
| 481 |
if (session->proxy) |
| 482 |
free(session->proxy); |
| 483 |
session->proxy = strdup(optarg); |
| 484 |
dbg("proxy = %s\n", session->proxy); |
| 485 |
break; |
| 486 |
case 'L': |
| 487 |
if (session->logfile) |
| 488 |
free(session->logfile); |
| 489 |
session->logfile = strdup(optarg); |
| 490 |
dbg("logfile = %s\n", session->logfile); |
| 491 |
break; |
| 492 |
case 'H': |
| 493 |
if (strcasecmp(optarg, "twitter") == 0) |
| 494 |
session->host = HOST_TWITTER; |
| 495 |
if (strcasecmp(optarg, "identica") == 0) |
| 496 |
session->host = HOST_IDENTICA; |
| 497 |
dbg("host = %d\n", session->host); |
| 498 |
break; |
| 499 |
case 'b': |
| 500 |
session->bash = 1; |
| 501 |
break; |
| 502 |
case 'h': |
| 503 |
display_help(); |
| 504 |
goto exit; |
| 505 |
case 'v': |
| 506 |
display_version(); |
| 507 |
goto exit; |
| 508 |
default: |
| 509 |
display_help(); |
| 510 |
goto exit; |
| 511 |
} |
| 512 |
} |
| 513 |
|
| 514 |
if (!session->account) { |
| 515 |
fprintf(stdout, "Enter twitter account: "); |
| 516 |
session->account = get_string_from_stdin(""); |
| 517 |
} |
| 518 |
|
| 519 |
if (!session->password) { |
| 520 |
fprintf(stdout, "Enter twitter password: "); |
| 521 |
session->password = get_string_from_stdin(""); |
| 522 |
} |
| 523 |
|
| 524 |
if (session->bash) |
| 525 |
tweet = get_string_from_stdin(""); |
| 526 |
else |
| 527 |
tweet = get_string_from_stdin("tweet: "); |
| 528 |
if (!tweet || strlen(tweet) == 0) { |
| 529 |
dbg("no tweet?\n"); |
| 530 |
return -1; |
| 531 |
} |
| 532 |
|
| 533 |
session->tweet = zalloc(strlen(tweet) + 10); |
| 534 |
|
| 535 |
/* if --bash is specified, add the "PWD $ " to |
| 536 |
* the start of the tweet. */ |
| 537 |
if (session->bash) |
| 538 |
sprintf(session->tweet, "$ %s", tweet); |
| 539 |
else |
| 540 |
sprintf(session->tweet, "%s", tweet); |
| 541 |
free(tweet); |
| 542 |
|
| 543 |
dbg("account = %s\n", session->account); |
| 544 |
dbg("password = %s\n", session->password); |
| 545 |
dbg("tweet = %s\n", session->tweet); |
| 546 |
dbg("host = %d\n", session->host); |
| 547 |
|
| 548 |
/* fork ourself so that the main shell can get on |
| 549 |
* with it's life as we try to connect and handle everything |
| 550 |
*/ |
| 551 |
if (session->bash) { |
| 552 |
child = fork(); |
| 553 |
if (child) { |
| 554 |
dbg("child is %d\n", child); |
| 555 |
exit(0); |
| 556 |
} |
| 557 |
} |
| 558 |
|
| 559 |
retval = send_tweet(session); |
| 560 |
if (retval && !session->bash) |
| 561 |
fprintf(stderr, "tweet failed\n"); |
| 562 |
|
| 563 |
log_session(session, retval); |
| 564 |
exit: |
| 565 |
session_free(session); |
| 566 |
return retval;; |
| 567 |
} |
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