bti.c

   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 <libxml/xmlmemory.h>
  32 #include <libxml/parser.h>
  33 #include <libxml/tree.h>
  34 #include "bti_version.h"
  35
  36
  37 #define zalloc(size)    calloc(size, 1)
  38
  39 #define dbg(format, arg...)                                             \
  40         do {                                                            \
  41                 if (debug)                                              \
  42                         printf("%s: " format , __func__ , ## arg);      \
  43         } while (0)
  44
  45
  46 static int debug;
  47
  48 enum host {
  49         HOST_TWITTER = 0,
  50         HOST_IDENTICA = 1,
  51 };
  52
  53 enum action {
  54         ACTION_UPDATE = 0,
  55         ACTION_FRIENDS = 1,
  56         ACTION_USER = 2,
  57         ACTION_REPLIES = 4,
  58         ACTION_PUBLIC = 8,
  59         ACTION_UNKNOWN = 16
  60 };
  61
  62 struct session {
  63         char *password;
  64         char *account;
  65         char *tweet;
  66         char *proxy;
  67         char *time;
  68         char *homedir;
  69         char *logfile;
  70         char *user;
  71         int bash;
  72         enum host host;
  73         enum action action;
  74 };
  75
  76 struct bti_curl_buffer {
  77         char *data;
  78         enum action action;
  79         int length;
  80 };
  81
  82 static void display_help(void)
  83 {
  84         fprintf(stdout, "bti - send tweet to twitter or identi.ca\n");
  85         fprintf(stdout, "Version: " BTI_VERSION "\n");
  86         fprintf(stdout, "Usage:\n");
  87         fprintf(stdout, "  bti [options]\n");
  88         fprintf(stdout, "options are:\n");
  89         fprintf(stdout, "  --account accountname\n");
  90         fprintf(stdout, "  --password password\n");
  91         fprintf(stdout, "  --action action\n");
  92         fprintf(stdout, "    ('update', 'friends', 'public', 'replies' or 'user')\n");
  93         fprintf(stdout, "  --user screenname\n");
  94         fprintf(stdout, "  --proxy PROXY:PORT\n");
  95         fprintf(stdout, "  --host HOST\n");
  96         fprintf(stdout, "  --logfile logfile\n");
  97         fprintf(stdout, "  --bash\n");
  98         fprintf(stdout, "  --debug\n");
  99         fprintf(stdout, "  --version\n");
 100         fprintf(stdout, "  --help\n");
 101 }
 102
 103 static void display_version(void)
 104 {
 105         fprintf(stdout, "bti - version %s\n", BTI_VERSION);
 106 }
 107
 108 static struct session *session_alloc(void)
 109 {
 110         struct session *session;
 111
 112         session = zalloc(sizeof(*session));
 113         if (!session)
 114                 return NULL;
 115         return session;
 116 }
 117
 118 static void session_free(struct session *session)
 119 {
 120         if (!session)
 121                 return;
 122         free(session->password);
 123         free(session->account);
 124         free(session->tweet);
 125         free(session->proxy);
 126         free(session->time);
 127         free(session->homedir);
 128         free(session->user);
 129         free(session);
 130 }
 131
 132 static struct bti_curl_buffer *bti_curl_buffer_alloc(enum action action)
 133 {
 134         struct bti_curl_buffer *buffer;
 135
 136         buffer = zalloc(sizeof(*buffer));
 137         if (!buffer)
 138                 return NULL;
 139
 140         /* start out with a data buffer of 1 byte to
 141          * make the buffer fill logic simpler */
 142         buffer->data = zalloc(1);
 143         if (!buffer->data) {
 144                 free(buffer);
 145                 return NULL;
 146         }
 147         buffer->length = 0;
 148         buffer->action = action;
 149         return buffer;
 150 }
 151
 152 static void bti_curl_buffer_free(struct bti_curl_buffer *buffer)
 153 {
 154         if (!buffer)
 155                 return;
 156         free(buffer->data);
 157         free(buffer);
 158 }
 159
 160 static const char *twitter_user_url    = "http://twitter.com/statuses/user_timeline/";
 161 static const char *twitter_update_url  = "https://twitter.com/statuses/update.xml";
 162 static const char *twitter_public_url  = "http://twitter.com/statuses/public_timeline.xml";
 163 static const char *twitter_friends_url = "https://twitter.com/statuses/friends_timeline.xml";
 164 static const char *twitter_replies_url = "http://twitter.com/statuses/replies.xml";
 165
 166 static const char *identica_user_url    = "http://identi.ca/api/statuses/user_timeline/";
 167 static const char *identica_update_url  = "http://identi.ca/api/statuses/update.xml";
 168 static const char *identica_public_url  = "http://identi.ca/api/statuses/public_timeline.xml";
 169 static const char *identica_friends_url = "http://identi.ca/api/statuses/friends_timeline.xml";
 170 static const char *identica_replies_url = "http://identi.ca/api/statuses/replies.xml";
 171
 172 static CURL *curl_init(void)
 173 {
 174         CURL *curl;
 175
 176         curl = curl_easy_init();
 177         if (!curl) {
 178                 fprintf(stderr, "Can not init CURL!\n");
 179                 return NULL;
 180         }
 181         /* some ssl sanity checks on the connection we are making */
 182         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
 183         curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
 184         return curl;
 185 }
 186
 187 void parse_statuses(xmlDocPtr doc, xmlNodePtr current)
 188 {
 189         xmlChar *text = NULL;
 190         xmlChar *user = NULL;
 191         xmlNodePtr userinfo;
 192
 193         current = current->xmlChildrenNode;
 194         while (current != NULL) {
 195                 if (current->type == XML_ELEMENT_NODE) {
 196                         if (!xmlStrcmp(current->name, (const xmlChar *)"text"))
 197                                 text = xmlNodeListGetString(doc, current->xmlChildrenNode, 1);
 198                         if (!xmlStrcmp(current->name, (const xmlChar *)"user")) {
 199                                 userinfo = current->xmlChildrenNode;
 200                                 while (userinfo != NULL) {
 201                                         if ((!xmlStrcmp(userinfo->name, (const xmlChar *)"screen_name"))) {
 202                                                 if (user)
 203                                                         xmlFree(user);
 204                                                 user = xmlNodeListGetString(doc, userinfo->xmlChildrenNode, 1);
 205                                         }
 206                                         userinfo = userinfo->next;
 207                                 }
 208                         }
 209                         if (user && text) {
 210                                 printf("[%s] %s\n", user, text);
 211                                 xmlFree(user);
 212                                 xmlFree(text);
 213                                 user = NULL;
 214                                 text = NULL;
 215                         }
 216                 }
 217                 current = current->next;
 218         }
 219
 220         return;
 221 }
 222
 223 static void parse_timeline(char *document)
 224 {
 225         xmlDocPtr doc;
 226         xmlNodePtr current;
 227         doc = xmlReadMemory(document, strlen(document), "timeline.xml", NULL, XML_PARSE_NOERROR);
 228
 229         if (doc == NULL)
 230                 return;
 231
 232         current = xmlDocGetRootElement(doc);
 233         if (current == NULL) {
 234                 fprintf(stderr, "empty document\n");
 235                 xmlFreeDoc(doc);
 236                 return;
 237         }
 238
 239         if (xmlStrcmp(current->name, (const xmlChar *) "statuses")) {
 240                 fprintf(stderr, "unexpected document type\n");
 241                 xmlFreeDoc(doc);
 242                 return;
 243         }
 244
 245         current = current->xmlChildrenNode;
 246         while (current != NULL) {
 247                 if ((!xmlStrcmp(current->name, (const xmlChar *)"status")))
 248                         parse_statuses(doc, current);
 249                 current = current->next;
 250         }
 251         xmlFreeDoc(doc);
 252
 253         return;
 254 }
 255
 256 size_t curl_callback(void *buffer, size_t size, size_t nmemb, void *userp)
 257 {
 258         struct bti_curl_buffer *curl_buf = userp;
 259         size_t buffer_size = size * nmemb;
 260         char *temp;
 261
 262         if ((!buffer) || (!buffer_size) || (!curl_buf))
 263                 return -EINVAL;
 264
 265         /* add to the data we already have */
 266         temp = zalloc(curl_buf->length + buffer_size + 1);
 267         if (!temp)
 268                 return -ENOMEM;
 269
 270         memcpy(temp, curl_buf->data, curl_buf->length);
 271         free(curl_buf->data);
 272         curl_buf->data = temp;
 273         memcpy(&curl_buf->data[curl_buf->length], (char *)buffer, buffer_size);
 274         curl_buf->length += buffer_size;
 275         if (curl_buf->action)
 276                 parse_timeline(curl_buf->data);
 277
 278         dbg("%s\n", curl_buf->data);
 279
 280         return buffer_size;
 281 }
 282
 283 static int send_request(struct session *session)
 284 {
 285         char user_password[500];
 286         char data[500];
 287         /* is there usernames longer than 22 chars? */
 288         char user_url[70];
 289         struct bti_curl_buffer *curl_buf;
 290         CURL *curl = NULL;
 291         CURLcode res;
 292         struct curl_httppost *formpost = NULL;
 293         struct curl_httppost *lastptr = NULL;
 294         struct curl_slist *slist = NULL;
 295
 296         if (!session)
 297                 return -EINVAL;
 298
 299         curl_buf = bti_curl_buffer_alloc(session->action);
 300         if (!curl_buf)
 301                 return -ENOMEM;
 302
 303         curl = curl_init();
 304         if (!curl)
 305                 return -EINVAL;
 306
 307         switch (session->action) {
 308         case ACTION_UPDATE:
 309                 snprintf(user_password, sizeof(user_password), "%s:%s",
 310                          session->account, session->password);
 311                 snprintf(data, sizeof(data), "status=\"%s\"", session->tweet);
 312                 curl_formadd(&formpost, &lastptr,
 313                              CURLFORM_COPYNAME, "status",
 314                              CURLFORM_COPYCONTENTS, session->tweet,
 315                              CURLFORM_END);
 316
 317                 curl_formadd(&formpost, &lastptr,
 318                              CURLFORM_COPYNAME, "source",
 319                              CURLFORM_COPYCONTENTS, "bti",
 320                              CURLFORM_END);
 321
 322                 curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
 323                 slist = curl_slist_append(slist, "Expect:");
 324                 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist);
 325                 switch (session->host) {
 326                 case HOST_TWITTER:
 327                         curl_easy_setopt(curl, CURLOPT_URL, twitter_update_url);
 328                         break;
 329                 case HOST_IDENTICA:
 330                         curl_easy_setopt(curl, CURLOPT_URL, identica_update_url);
 331                         break;
 332                 }
 333                 curl_easy_setopt(curl, CURLOPT_USERPWD, user_password);
 334
 335                 break;
 336         case ACTION_FRIENDS:
 337                 snprintf(user_password, sizeof(user_password), "%s:%s",
 338                          session->account, session->password);
 339                 switch (session->host) {
 340                 case HOST_TWITTER:
 341                         curl_easy_setopt(curl, CURLOPT_URL, twitter_friends_url);
 342                         break;
 343                 case HOST_IDENTICA:
 344                         curl_easy_setopt(curl, CURLOPT_URL, identica_friends_url);
 345                         break;
 346                 }
 347                 curl_easy_setopt(curl, CURLOPT_USERPWD, user_password);
 348
 349                 break;
 350         case ACTION_USER:
 351                 switch (session->host) {
 352                 case HOST_TWITTER:
 353                         sprintf(user_url, "%s%s.xml", twitter_user_url, session->user);
 354                         curl_easy_setopt(curl, CURLOPT_URL, user_url);
 355                         break;
 356                 case HOST_IDENTICA:
 357                         sprintf(user_url, "%s%s.xml", identica_user_url, session->user);
 358                         curl_easy_setopt(curl, CURLOPT_URL, user_url);
 359                         break;
 360                 }
 361
 362                 break;
 363         case ACTION_REPLIES:
 364                 snprintf(user_password, sizeof(user_password), "%s:%s",
 365                          session->account, session->password);
 366                 switch (session->host) {
 367                 case HOST_TWITTER:
 368                         curl_easy_setopt(curl, CURLOPT_URL, twitter_replies_url);
 369                         break;
 370                 case HOST_IDENTICA:
 371                         curl_easy_setopt(curl, CURLOPT_URL, identica_replies_url);
 372                         break;
 373                 }
 374                 curl_easy_setopt(curl, CURLOPT_USERPWD, user_password);
 375
 376                 break;
 377         case ACTION_PUBLIC:
 378                 switch (session->host) {
 379                 case HOST_TWITTER:
 380                         curl_easy_setopt(curl, CURLOPT_URL, twitter_public_url);
 381                         break;
 382                 case HOST_IDENTICA:
 383                         curl_easy_setopt(curl, CURLOPT_URL, identica_public_url);
 384                         break;
 385                 }
 386
 387                 break;
 388         default:
 389                 break;
 390         }
 391
 392         if (session->proxy)
 393                 curl_easy_setopt(curl, CURLOPT_PROXY, session->proxy);
 394
 395         if (debug)
 396                 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
 397
 398         dbg("user_password = %s\n", user_password);
 399         dbg("data = %s\n", data);
 400         dbg("proxy = %s\n", session->proxy);
 401
 402         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_callback);
 403         curl_easy_setopt(curl, CURLOPT_WRITEDATA, curl_buf);
 404         res = curl_easy_perform(curl);
 405         if (res && !session->bash) {
 406                 fprintf(stderr, "error(%d) trying to perform operation\n", res);
 407                 return -EINVAL;
 408         }
 409
 410         curl_easy_cleanup(curl);
 411         if (session->action == ACTION_UPDATE)
 412                 curl_formfree(formpost);
 413         bti_curl_buffer_free(curl_buf);
 414         return 0;
 415 }
 416
 417 static void parse_configfile(struct session *session)
 418 {
 419         FILE *config_file;
 420         char *line = NULL;
 421         size_t len = 0;
 422         char *account = NULL;
 423         char *password = NULL;
 424         char *host = NULL;
 425         char *proxy = NULL;
 426         char *logfile = NULL;
 427         char *action = NULL;
 428         char *user = NULL;
 429         char *file;
 430
 431         /* config file is ~/.bti  */
 432         file = alloca(strlen(session->homedir) + 7);
 433
 434         sprintf(file, "%s/.bti", session->homedir);
 435
 436         config_file = fopen(file, "r");
 437
 438         /* No error if file does not exist or is unreadable.  */
 439         if (config_file == NULL)
 440                 return;
 441
 442         do {
 443                 ssize_t n = getline(&line, &len, config_file);
 444                 if (n < 0)
 445                         break;
 446                 if (line[n - 1] == '\n')
 447                         line[n - 1] = '\0';
 448                 /* Parse file.  Format is the usual value pairs:
 449                    account=name
 450                    passwort=value
 451                    # is a comment character
 452                 */
 453                 *strchrnul(line, '#') = '\0';
 454                 char *c = line;
 455                 while (isspace(*c))
 456                         c++;
 457                 /* Ignore blank lines.  */
 458                 if (c[0] == '\0')
 459                         continue;
 460
 461                 if (!strncasecmp(c, "account", 7) && (c[7] == '=')) {
 462                         c += 8;
 463                         if (c[0] != '\0')
 464                                 account = strdup(c);
 465                 } else if (!strncasecmp(c, "password", 8) &&
 466                            (c[8] == '=')) {
 467                         c += 9;
 468                         if (c[0] != '\0')
 469                                 password = strdup(c);
 470                 } else if (!strncasecmp(c, "host", 4) &&
 471                            (c[4] == '=')) {
 472                         c += 5;
 473                         if (c[0] != '\0')
 474                                 host = strdup(c);
 475                 } else if (!strncasecmp(c, "proxy", 5) &&
 476                            (c[5] == '=')) {
 477                         c += 6;
 478                         if (c[0] != '\0')
 479                                 proxy = strdup(c);
 480                 } else if (!strncasecmp(c, "logfile", 7) &&
 481                            (c[7] == '=')) {
 482                         c += 8;
 483                         if (c[0] != '\0')
 484                                 logfile = strdup(c);
 485                 } else if (!strncasecmp(c, "action", 6) &&
 486                            (c[6] == '=')) {
 487                         c += 7;
 488                         if (c[0] != '\0')
 489                                 action = strdup(c);
 490                 } else if (!strncasecmp(c, "user", 4) &&
 491                                 (c[4] == '=')) {
 492                         c += 5;
 493                         if (c[0] != '\0')
 494                                 user = strdup(c);
 495                 }
 496         } while (!feof(config_file));
 497
 498         if (password)
 499                 session->password = password;
 500         if (account)
 501                 session->account = account;
 502         if (host) {
 503                 if (strcasecmp(host, "twitter") == 0)
 504                         session->host = HOST_TWITTER;
 505                 if (strcasecmp(host, "identica") == 0)
 506                         session->host = HOST_IDENTICA;
 507                 free(host);
 508         }
 509         if (proxy) {
 510                 if (session->proxy)
 511                         free(session->proxy);
 512                 session->proxy = proxy;
 513         }
 514         if (logfile)
 515                 session->logfile = logfile;
 516         if (action) {
 517                 if (strcasecmp(action, "update") == 0)
 518                         session->action = ACTION_UPDATE;
 519                 else if (strcasecmp(action, "friends") == 0)
 520                         session->action = ACTION_FRIENDS;
 521                 else if (strcasecmp(action, "user") == 0)
 522                         session->action = ACTION_USER;
 523                 else if (strcasecmp(action, "replies") == 0)
 524                         session->action = ACTION_REPLIES;
 525                 else if (strcasecmp(action, "public") == 0)
 526                         session->action = ACTION_PUBLIC;
 527                 else
 528                         session->action = ACTION_UNKNOWN;
 529                 free(action);
 530         }
 531         if (user) {
 532                 session->user = user;
 533         }
 534
 535         /* Free buffer and close file.  */
 536         free(line);
 537         fclose(config_file);
 538 }
 539
 540 static void log_session(struct session *session, int retval)
 541 {
 542         FILE *log_file;
 543         char *filename;
 544         char *host;
 545
 546         /* Only log something if we have a log file set */
 547         if (!session->logfile)
 548                 return;
 549
 550         filename = alloca(strlen(session->homedir) +
 551                           strlen(session->logfile) + 3);
 552
 553         sprintf(filename, "%s/%s", session->homedir, session->logfile);
 554
 555         log_file = fopen(filename, "a+");
 556         if (log_file == NULL)
 557                 return;
 558         switch (session->host) {
 559         case HOST_TWITTER:
 560                 host = "twitter";
 561                 break;
 562         case HOST_IDENTICA:
 563                 host = "identi.ca";
 564                 break;
 565         default:
 566                 host = "unknown";
 567                 break;
 568         }
 569
 570         switch (session->action) {
 571         case ACTION_UPDATE:
 572                 if (retval)
 573                         fprintf(log_file, "%s: host=%s tweet failed\n",
 574                                 session->time, host);
 575                 else
 576                         fprintf(log_file, "%s: host=%s tweet=%s\n",
 577                                 session->time, host, session->tweet);
 578                 break;
 579         case ACTION_FRIENDS:
 580                 fprintf(log_file, "%s: host=%s retrieving friends timeline\n",
 581                         session->time, host);
 582                 break;
 583         case ACTION_USER:
 584                 fprintf(log_file, "%s: host=%s retrieving %s's timeline\n",
 585                         session->time, host, session->user);
 586                 break;
 587         case ACTION_REPLIES:
 588                 fprintf(log_file, "%s: host=%s retrieving replies\n",
 589                         session->time, host);
 590                 break;
 591         case ACTION_PUBLIC:
 592                 fprintf(log_file, "%s: host=%s retrieving public timeline\n",
 593                         session->time, host);
 594                 break;
 595         default:
 596                 break;
 597         }
 598
 599         fclose(log_file);
 600 }
 601
 602 static char *get_string_from_stdin(void)
 603 {
 604         char *temp;
 605         char *string;
 606
 607         string = zalloc(1000);
 608         if (!string)
 609                 return NULL;
 610
 611         if (!fgets(string, 999, stdin))
 612                 return NULL;
 613         temp = strchr(string, '\n');
 614         *temp = '\0';
 615         return string;
 616 }
 617
 618 int main(int argc, char *argv[], char *envp[])
 619 {
 620         static const struct option options[] = {
 621                 { "debug", 0, NULL, 'd' },
 622                 { "account", 1, NULL, 'a' },
 623                 { "password", 1, NULL, 'p' },
 624                 { "host", 1, NULL, 'H' },
 625                 { "proxy", 1, NULL, 'P' },
 626                 { "action", 1, NULL, 'A' },
 627                 { "user", 1, NULL, 'u' },
 628                 { "logfile", 1, NULL, 'L' },
 629                 { "help", 0, NULL, 'h' },
 630                 { "bash", 0, NULL, 'b' },
 631                 { "version", 0, NULL, 'v' },
 632                 { }
 633         };
 634         struct session *session;
 635         pid_t child;
 636         char *tweet;
 637         int retval = 0;
 638         int option;
 639         char *http_proxy;
 640         time_t t;
 641
 642         debug = 0;
 643         rl_bind_key('\t', rl_insert);
 644
 645         session = session_alloc();
 646         if (!session) {
 647                 fprintf(stderr, "no more memory...\n");
 648                 return -1;
 649         }
 650
 651         /* get the current time so that we can log it later */
 652         time(&t);
 653         session->time = strdup(ctime(&t));
 654         session->time[strlen(session->time)-1] = 0x00;
 655
 656         session->homedir = strdup(getenv("HOME"));
 657
 658         curl_global_init(CURL_GLOBAL_ALL);
 659
 660         /* Set environment variables first, before reading command line options
 661          * or config file values. */
 662         http_proxy = getenv("http_proxy");
 663         if (http_proxy) {
 664                 if (session->proxy)
 665                         free(session->proxy);
 666                 session->proxy = strdup(http_proxy);
 667                 dbg("http_proxy = %s\n", session->proxy);
 668         }
 669
 670         parse_configfile(session);
 671
 672         while (1) {
 673                 option = getopt_long_only(argc, argv, "dqe:p:P:H:a:A:u:h",
 674                                           options, NULL);
 675                 if (option == -1)
 676                         break;
 677                 switch (option) {
 678                 case 'd':
 679                         debug = 1;
 680                         break;
 681                 case 'a':
 682                         if (session->account)
 683                                 free(session->account);
 684                         session->account = strdup(optarg);
 685                         dbg("account = %s\n", session->account);
 686                         break;
 687                 case 'p':
 688                         if (session->password)
 689                                 free(session->password);
 690                         session->password = strdup(optarg);
 691                         dbg("password = %s\n", session->password);
 692                         break;
 693                 case 'P':
 694                         if (session->proxy)
 695                                 free(session->proxy);
 696                         session->proxy = strdup(optarg);
 697                         dbg("proxy = %s\n", session->proxy);
 698                         break;
 699                 case 'A':
 700                         if (strcasecmp(optarg, "update") == 0)
 701                                 session->action = ACTION_UPDATE;
 702                         else if (strcasecmp(optarg, "friends") == 0)
 703                                 session->action = ACTION_FRIENDS;
 704                         else if (strcasecmp(optarg, "user") == 0)
 705                                 session->action = ACTION_USER;
 706                         else if (strcasecmp(optarg, "replies") == 0)
 707                                 session->action = ACTION_REPLIES;
 708                         else if (strcasecmp(optarg, "public") == 0)
 709                                 session->action = ACTION_PUBLIC;
 710                         else
 711                                 session->action = ACTION_UNKNOWN;
 712                         dbg("action = %d\n", session->action);
 713                         break;
 714                 case 'u':
 715                         if (session->user)
 716                                 free(session->user);
 717                         session->user = strdup(optarg);
 718                         dbg("user = %s\n", session->user);
 719                         break;
 720                 case 'L':
 721                         if (session->logfile)
 722                                 free(session->logfile);
 723                         session->logfile = strdup(optarg);
 724                         dbg("logfile = %s\n", session->logfile);
 725                         break;
 726                 case 'H':
 727                         if (strcasecmp(optarg, "twitter") == 0)
 728                                 session->host = HOST_TWITTER;
 729                         if (strcasecmp(optarg, "identica") == 0)
 730                                 session->host = HOST_IDENTICA;
 731                         dbg("host = %d\n", session->host);
 732                         break;
 733                 case 'b':
 734                         session->bash = 1;
 735                         break;
 736                 case 'h':
 737                         display_help();
 738                         goto exit;
 739                 case 'v':
 740                         display_version();
 741                         goto exit;
 742                 default:
 743                         display_help();
 744                         goto exit;
 745                 }
 746         }
 747
 748         if (session->action == ACTION_UNKNOWN) {
 749                 fprintf(stderr, "Unknown action, valid actions are:\n");
 750                 fprintf(stderr, "'update', 'friends', 'public', 'replies' or 'user'.\n");
 751                 goto exit;
 752         }
 753
 754         if (!session->account) {
 755                 fprintf(stdout, "Enter twitter account: ");
 756                 session->account = readline(NULL);
 757         }
 758
 759         if (!session->password) {
 760                 fprintf(stdout, "Enter twitter password: ");
 761                 session->password = readline(NULL);
 762         }
 763
 764         if (session->action == ACTION_UPDATE) {
 765                 if (session->bash)
 766                         tweet = get_string_from_stdin();
 767                 else
 768                         tweet = readline("tweet: ");
 769                 if (!tweet || strlen(tweet) == 0) {
 770                         dbg("no tweet?\n");
 771                         return -1;
 772                 }
 773
 774                 session->tweet = zalloc(strlen(tweet) + 10);
 775                 if (session->bash)
 776                         sprintf(session->tweet, "$ %s", tweet);
 777                 else
 778                         sprintf(session->tweet, "%s", tweet);
 779
 780                 free(tweet);
 781                 dbg("tweet = %s\n", session->tweet);
 782         }
 783
 784         if (!session->user)
 785                 session->user = strdup(session->account);
 786
 787         dbg("account = %s\n", session->account);
 788         dbg("password = %s\n", session->password);
 789         dbg("host = %d\n", session->host);
 790         dbg("action = %d\n", session->action);
 791
 792         /* fork ourself so that the main shell can get on
 793          * with it's life as we try to connect and handle everything
 794          */
 795         if (session->bash) {
 796                 child = fork();
 797                 if (child) {
 798                         dbg("child is %d\n", child);
 799                         exit(0);
 800                 }
 801         }
 802
 803         retval = send_request(session);
 804         if (retval && !session->bash)
 805                 fprintf(stderr, "operation failed\n");
 806
 807         log_session(session, retval);
 808 exit:
 809         session_free(session);
 810         return retval;;
 811 }