mdsms.c

   1 #include "config.h"
   2 #ifndef lint
   3 static char rcsid[] ATTR_UNUSED = "$Id$";
   4 #endif
   5
   6 /*
   7  * $Log$
   8  * Revision 1.4  1999/07/14 01:01:11  short
   9  * Termios made compatible with Digital UNIX 4.0, cfset[io]speed() missing.
  10  *
  11  * Revision 1.3  1999/06/03 11:46:41  short
  12  * Logging (--log) implemented.
  13  *
  14  * Revision 1.2  1999/06/03 10:38:52  short
  15  * Implemented remaining communication timeouts and maximum retry count.
  16  *
  17  * Revision 1.1.1.1  1999/05/26 13:06:26  short
  18  * First alpha release.
  19  *
  20  */
  21
  22 #include "setup.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <signal.h>
  28 #include <stdarg.h>
  29 #include <limits.h>
  30 #include <ctype.h>
  31 #include <string.h>
  32 #include <termios.h>
  33 #include <unistd.h>
  34 #include <assert.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <fcntl.h>
  38 #include <errno.h>
  39 #include <signal.h>
  40 #include <time.h>
  41
  42 #ifdef HAVE_GETOPT_LONG
  43 #include <getopt.h>
  44 #else
  45 #include "getopt.h"
  46 #endif
  47
  48 #if 0
  49 char *strdup(const char *s);
  50 int kill(pid_t pid,int sig);
  51 int snprintf(char *str,size_t n,const char *format,...);
  52 int vsnprintf(char *str,size_t n,const char *format,va_list ap);
  53 void usleep(unsigned long usec);
  54 #endif
  55
  56 #define NELEM(x) (sizeof((x))/sizeof(*(x)))
  57
  58 #ifndef DEBUG
  59 #define dbg(cmd)
  60 #else
  61 #define dbg(cmd) cmd
  62 #endif
  63 /* ANSI C does not allow macro with variable arguments */
  64 #define dO stderr
  65 #define dB(a) dbg(fprintf a)
  66
  67 #define d1(n1)          dB((dO,n1         ))
  68 #define d2(n1,n2)       dB((dO,n1,n2      ))
  69 #define d3(n1,n2,n3)    dB((dO,n1,n2,n3   ))
  70 #define d4(n1,n2,n3,n4) dB((dO,n1,n2,n3,n4))
  71
  72 static const char version[]="This is MobilDock SMS sender (" PACKAGE " " VERSION ")\n";
  73
  74 static int verbose
  75 #ifdef DEBUG
  76         =0xFFFF
  77 #endif
  78         ;
  79 static char *pname;
  80 static int dis_cleanup=0,devfd=-1;
  81
  82 static char *phone,*body,*device,*logname,*lockfile,*smsc,*maxretry,*readtime,*chartime,*cmdtime;
  83 static int readbody;
  84 static long maxretryn=DEF_MAXRETRY,readtimen=DEF_READTIME,chartimen=DEF_CHARTIME,cmdtimen=DEF_CMDTIME;
  85 static size_t bodylen;
  86
  87 static char *devicename; /* path stripped */
  88 static char lockreal[512],locked;
  89
  90 static struct termios restios,tios;
  91 static char restios_yes;
  92 static FILE *logf;
  93
  94 static void vlogmsg(
  95 #ifndef PRINTF_WORKS_PM
  96                 char outerr,
  97 #endif
  98                 const char *fmt,va_list ap)
  99 {
 100 time_t stamp;
 101 char *ctm,*s;
 102 pid_t mypid=-1;
 103 char host[LINE_MAX];
 104
 105         if (!logf) return;
 106         if (mypid==-1) {
 107                 mypid=getpid();
 108                 if (gethostname(host,sizeof(host))) strcpy(host,"<ERROR>");
 109                 }
 110         time(&stamp);
 111         ctm=ctime(&stamp);
 112         if ((s=strchr(ctm,'\n'))) *s='\0';
 113         fprintf(logf,"%s %s %s[%d]: ",ctm,host,pname,mypid);
 114         vfprintf(logf,fmt,ap);
 115 #ifndef PRINTF_WORKS_PM
 116         if (outerr) fputs(strerror(errno),logf);
 117 #endif
 118         fputc('\n',logf);
 119         fflush(logf);
 120 }
 121
 122 static void logmsg(const char *fmt,...)
 123 {
 124 va_list ap;
 125         va_start(ap,fmt);
 126         vlogmsg(
 127 #ifndef PRINTF_WORKS_PM
 128                 0,
 129 #endif
 130                 fmt,ap);
 131         va_end(ap);
 132 }
 133
 134 static void error(const char *fmt,...)
 135 {
 136 va_list ap;
 137 char fatal=*fmt;
 138 #ifndef PRINTF_WORKS_PM
 139 char pm,*nfmt;
 140 size_t fmtl;
 141 #endif
 142
 143         if (fatal=='!' || fatal=='.' || fatal=='\n') fmt++;
 144         else fatal=0;
 145
 146 #ifndef PRINTF_WORKS_PM
 147         if (!(nfmt=strdup(fmt))) return;
 148         fmtl=strlen(fmt);
 149         if ((pm=(fmtl>=2 && !strcmp(fmt+fmtl-2,"%m")))) nfmt[fmtl-2]='\0';
 150 #endif
 151
 152         fprintf(stderr,"%s: ",pname);
 153         va_start(ap,fmt);
 154         vfprintf(stderr,
 155 #ifdef PRINTF_WORKS_PM
 156                 fmt
 157 #else
 158                 nfmt
 159 #endif
 160                 ,ap);
 161         if (fatal=='!') vlogmsg(
 162 #ifdef PRINTF_WORKS_PM
 163                 fmt
 164 #else
 165                 pm,nfmt
 166 #endif
 167                 ,ap);
 168         va_end(ap);
 169
 170 #ifndef PRINTF_WORKS_PM
 171         if (pm) {
 172                 fputs(strerror(errno),stderr);
 173                 free(nfmt);
 174                 }
 175 #endif
 176
 177         if (fatal!='\n') fputc((fatal=='.'?'.':'!'),stderr);
 178         fputc('\n',stderr);
 179         if (fatal=='!') exit(EXIT_FAILURE);
 180 }
 181
 182 static void chk(void *p)
 183 {
 184         if (p) return;
 185         error("!Virtual memory exhausted");
 186 }
 187
 188 static void cleanup(void)
 189 {
 190         d1("cleanup()\n");
 191         if (dis_cleanup) return;
 192         if (restios_yes) {
 193                 if (tcsetattr(devfd,TCSANOW,&restios))
 194                         error("Error restoring termios for device: %m");
 195                 restios_yes=0;
 196                 }
 197         if (locked && *lockreal) {
 198                 d2("Removing lockfile \"%s\"\n",lockreal);
 199                 if (unlink(lockreal))
 200                         error("Error removing my device lockfile \"%s\": %m",lockreal);
 201                 locked=0;
 202                 }
 203         dis_cleanup=1;
 204         exit(EXIT_FAILURE);
 205 }
 206
 207 static void usage(void)
 208 {
 209         fprintf(stderr,"\
 210 \n\
 211 %s\
 212 \n\
 213 Usage: " PACKAGE " [-c|--config <cfgfile>] [-d|--device <device>]\n\
 214              [-L|--log <file>]\n\
 215              [-l|--lockfile <lock>] [-s|--smsc <smsc #>] [-m|--maxretry <#>]\n\
 216              [-r|--readtime <sec>] [-t|--chartime <msec>] [-T|--cmdtime <msec>]\n\
 217              [-f|--file] [-v|--verbose] [-h|--help] [-V|--version]\n\
 218              <dest. phone> <msg text|msg filename>\n\
 219 \n\
 220  -c, --config\tRead this additional config file\n\
 221 \t\t(def. \"" CONFIG_MAIN "\" and \"$HOME" CONFIG_HOME "\")\n\
 222  -d, --device\tMobilDock on this serial device (def. \"" DEF_DEVICE "\")\n\
 223  -L, --log\tLog all important messages to this file (def. \"" DEF_LOGNAME "\")\n\
 224  -l, --lockfile\tLock serial port by this file, \"%%s\" is basename of device\n\
 225 \t\t(def. \"%s\")\n\
 226  -s, --smsc\tUse this SMS Center number (def. query from Siemens A1)\n\
 227  -m, --maxretry\tMaximum retries of any command before giving up (def. %d)\n\
 228  -r, --readtime\tSeconds for maximum wait time for response (def. %ds)\n\
 229  -t, --chartime\tMilliseconds between each char on baud 19200 (def. %dms)\n\
 230  -T, --cmdtime\tMilliseconds before each whole AT command (def. %dms)\n\
 231  -f, --file\tRead contents of message from file instead\n\
 232  -v, --verbose\tIncrease verbosity level, more \"-v\"s give more messages\n\
 233  -h, --help\tPrint a summary of the options\n\
 234  -V, --version\tPrint the version number\n\
 235 \n",version,DEF_LOCKFILE,DEF_MAXRETRY,DEF_READTIME,DEF_CHARTIME,DEF_CMDTIME);
 236         exit(EXIT_FAILURE);
 237 }
 238
 239 static const struct option longopts[]={
 240 {"config"  ,1,0,'c'},
 241 {"device"  ,1,0,'d'},
 242 {"log"     ,1,0,'l'},
 243 {"lockfile",1,0,'l'},
 244 {"smsc"    ,1,0,'s'},
 245 {"maxretry",1,0,'m'},
 246 {"readtime",1,0,'r'},
 247 {"chartime",1,0,'t'},
 248 {"cmdtime" ,1,0,'T'},
 249 {"file"    ,0,0,'f'},
 250 {"verbose" ,0,0,'v'},
 251 {"help"    ,0,0,'h'},
 252 {"version" ,0,0,'V'}};
 253
 254 static void processargs(int argp,char **args,const char *from);
 255
 256 static char *cfgstack[MAXCFGLOOP];
 257 static unsigned cfgstacki=0;
 258
 259 static void chkfclose(FILE *f,const char *fname)
 260 {
 261         if (fclose(f))
 262                 error("Error closing \"%s\": %m",fname);
 263 }
 264
 265 static void readfile(const char *fname,char quiet)
 266 {
 267 FILE *f;
 268 size_t got;
 269 char *args[MAXCFGARGS],*d,*s,blank,quote;
 270 unsigned argp;
 271 char *buf;
 272 long size;
 273 static unsigned tot=0;
 274
 275         if (tot++>=MAXCFGNUM) {
 276                 if (tot==MAXCFGNUM+1) error("Too many config files to read, max is %d, break-out",MAXCFGNUM);
 277                 return;
 278                 }
 279         if (!(f=fopen(fname,"rt"))) {
 280                 if (!quiet) error("Can't open config file \"%s\" for r/o: %m",fname);
 281                 return;
 282                 }
 283         if (verbose>=2) error(".Reading config file \"%s\"",fname);
 284         if (fseek(f,0,SEEK_END))
 285                 error("Error seeking to end of \"s\": %m",fname);
 286         if ((size=ftell(f))<0)
 287                 size=0,error("Error measuring \"%s\": %m",fname);
 288         if (size>MAXCONFIG)
 289                 error("File \"%s\" is too long, read only %ld bytes",fname,MAXCONFIG);
 290         chk(buf=malloc((size?size:MAXCONFIG)+1));
 291         rewind(f);
 292         got=fread(buf,1,(size?size:MAXCONFIG),f);
 293         if (size && got!=size)
 294                 error("File \"%s\" read error, got only %u bytes of %ld",fname,got,size);
 295         chkfclose(f,fname);
 296         buf[got]='\0';
 297         args[0]=pname;
 298         for (argp=1,d=s=buf,blank=1,quote=0;s<buf+got;s++) {
 299 char c=*s;
 300
 301                 if (!quote && isspace(c)) {
 302                         if (!blank) {
 303                                 *d='\0';
 304                                 blank=1;
 305                                 if (verbose>=2) error("\nConfig \"%s\": arg#%d: %s",fname,argp-1,args[argp-1]);
 306                                 }
 307                         continue;
 308                         }
 309                 if (blank) {
 310                         if (argp>=NELEM(args)-1) {
 311                                 error("Too many arguments in \"%s\", from offset %d ignored",fname,s-buf);
 312                                 break;
 313                                 }
 314                         args[argp++]=s;
 315                         d=s;
 316                         blank=0;
 317                         }
 318                 if (c=='\\') { *d++=*++s; continue; }
 319                 if (c=='"' || c=='\'') {
 320                         if (!quote   ) { quote=c; continue; }
 321                         if ( quote==c) { quote=0; continue; }
 322                         /* FALLTHRU */
 323                         }
 324                 *d++=c;
 325                 }
 326         args[argp]=NULL;
 327         processargs(argp,args,fname);
 328         free(buf);
 329 }
 330
 331 static struct {
 332         const char c;
 333         char **const var;
 334         unsigned stamp;
 335         } optset[]={
 336                 { 'd',&device   },
 337                 { 'L',&logname  },
 338                 { 'l',&lockfile },
 339                 { 's',&smsc     },
 340                 { 'm',&maxretry },
 341                 { 'r',&readtime },
 342                 { 't',&chartime },
 343                 { 'T',&cmdtime  },
 344         };
 345
 346 static void processargs(int argp,char **args,const char *from)
 347 {
 348 int optc;
 349 static unsigned seq=0;
 350 int i;
 351
 352         seq++;
 353         optarg=NULL; optind=0; /* FIXME: Possible portability problem. */
 354         while ((optc=getopt_long(argp,args,"c:d:L:l:s:m:r:t:T:fvhV",longopts,NULL))!=EOF) switch (optc) {
 355                 case 'c':
 356                         if (cfgstacki>=NELEM(cfgstack)) {
 357                                 error("Looping (%d) during attempt to read config file \"%s\", break-out",NELEM(cfgstack),optind);
 358                                 break;
 359                                 }
 360                         chk(cfgstack[cfgstacki++]=strdup(optarg));
 361                         break;
 362                 case 'd': case 'L': case 'l': case 's': case 'm': case 'r': case 't': case 'T':
 363                         for (i=0;i<NELEM(optset);i++)
 364                                 if (optset[i].c==optc) {
 365                                         if (optset[i].stamp && optset[i].stamp!=seq) {
 366                                                 assert(!!*optset[i].var);
 367                                                 break;
 368                                                 }
 369                                         free(*optset[i].var);
 370                                         chk(*optset[i].var=strdup(optarg));
 371                                         optset[i].stamp=seq;
 372                                         break;
 373                                         }
 374                         assert(i<NELEM(optset));
 375                         break;
 376                 case 'f':
 377                         readbody++;
 378                         break;
 379                 case 'v':
 380                         verbose++;
 381                         break;
 382                 case 'V':
 383                         fprintf(stderr,version);
 384                         exit(EXIT_FAILURE);
 385                 default:
 386                         if (optc!='h')
 387                                 error("\nLast getopt(3) error occured during parsing option %d from \"%s\"! Follows help:",optind-1,from);
 388                         usage();
 389                         break;
 390                 }
 391         if (!phone && optind<argp)
 392                 chk(phone=strdup(args[optind++]));
 393         if (!body && optind<argp) {
 394 char *d;
 395 int i;
 396
 397                 for (i=optind,bodylen=argp-optind;i<argp;i++)
 398                         bodylen+=strlen(args[i]);
 399                 chk(body=malloc(bodylen));
 400                 for (d=body,i=optind;i<argp;i++) {
 401 size_t l=strlen(args[i]);
 402                         memcpy(d,args[i],l);
 403                         d+=l;
 404                         *d++=' ';
 405                         assert(d<=body+bodylen);
 406                         }
 407                 assert(d==body+bodylen);
 408                 d[-1]='\0';
 409                 bodylen--;
 410                 }
 411         while (cfgstacki) {
 412 char *s=cfgstack[--cfgstacki];
 413
 414                 assert(cfgstacki>=0);
 415                 readfile(s,0);
 416                 free(s);
 417                 assert(cfgstacki>=0 && cfgstacki<NELEM(cfgstack));
 418                 }
 419 }
 420
 421 static const struct {
 422         char **var;
 423         const char *name;
 424         } nullcheck[]={
 425                 {&phone,"destination phone number"},
 426 #if 0
 427                 {&body ,"body text"},
 428                 {&device,"device for communication"},
 429 #endif
 430         };
 431 static char **emptycheck[]={&logname,&smsc,&body};
 432
 433 static void lockclose(int fd)
 434 {
 435         if (close(fd))
 436                 error("Error closing lockfile \"%s\"",lockreal);
 437 }
 438
 439 static inline void lockdevice(void)
 440 {
 441 int fd=-1;
 442 char buf[64];
 443 ssize_t got;
 444 int delay=0;
 445 char empty=0;
 446 pid_t pid;
 447
 448         for (;;) {
 449                 if (fd!=-1) lockclose(fd);
 450 recheck:
 451                 if (delay) sleep(delay);
 452                 delay=DEVLOCK_PERIOD;
 453                 if (verbose>=3) error(".Checking the lockfile \"%s\"..",lockreal);
 454                 if ((fd=open(lockreal,O_RDONLY))==-1) break;
 455                 if ((got=read(fd,buf,sizeof(buf)-1))<=0) {
 456 isempty:
 457                         if (empty>=DEVLOCK_MAXEMPTY) {
 458                                 error(".Lockfile \"%s\" is still not valid, removing it",lockreal);
 459                                 goto remove;
 460                                 }
 461                         empty++;
 462                         continue;
 463                         }
 464                 assert(got<sizeof(buf));
 465                 buf[got]='\0';
 466                 if (sscanf(buf,"%d",&pid)!=1) goto isempty;
 467                 empty=0;
 468                 errno=0;
 469                 if (kill(pid,0) && errno!=ESRCH && errno!=EPERM)
 470                         error("Error during checking consciousness of PID %d: %m",pid);
 471                 if (errno!=ESRCH) continue;
 472                 error(".Lockfile \"%s\" is stale (PID %d), removing it",lockreal,pid);
 473 remove:
 474                 lockclose(fd);
 475                 if (unlink(lockreal))
 476                         error("Error removing foreign lockfile \"%s\": %m",lockreal);
 477                 break;
 478                 }
 479         errno=0;
 480         if ((fd=open(lockreal,O_WRONLY|O_CREAT|O_EXCL,0644))==-1) {
 481                 if (errno==EEXIST) goto recheck;
 482                 error("!Error creating lockfile \"%s\": %m",lockreal);
 483                 }
 484         locked=1;
 485         got=VARPRINTF(buf,"%010d\n",getpid()); assert(got==11);
 486         if (write(fd,buf,got)!=got)
 487                 error("!Error writing data to lockfile \"%s\": %m",lockreal);
 488         lockclose(fd);
 489 }
 490
 491 static char wasalarm=0;
 492 static void sigalarm(int signo)
 493 {
 494         signal(SIGALRM,(RETSIGTYPE (*)(int))sigalarm);
 495         wasalarm=1;
 496         if (verbose>=1) error("Timed out");
 497 }
 498
 499 static void blocking(char yes)
 500 {
 501 static char state=-1;
 502         if (state==yes) return;
 503         if (fcntl(devfd,F_SETFL,(yes?0:O_NONBLOCK)))
 504                 error("!fcntl() on device for %sblocking mode: %m",(yes?"":"non-"));
 505         state=yes;
 506 }
 507
 508 static const char *record;
 509 static char *catchdata;
 510 static size_t catchdatal,catchdatasiz;
 511
 512 static void catched(const char *end)
 513 {
 514 size_t len;
 515 void *p;
 516
 517         if (!record) return;
 518         assert(end>=record);
 519         if ((p=memchr(record,'\n',end-record))) end=p;
 520         if ((len=end-record)) {
 521                 if (catchdatal+len>catchdatasiz)
 522                         chk(catchdata=realloc(catchdata,
 523                                 (catchdatasiz=MAX(LINE_MAX,(catchdatal+len)*2))));
 524                 memcpy(catchdata+catchdatal,record,len);
 525                 catchdatal+=len;
 526                 }
 527         record=(p?NULL:end);
 528         assert(catchdatal<=catchdatasiz);
 529 }
 530
 531 static int retrycnt=0;
 532 static void retrying(void)
 533 {
 534         if (++retrycnt>maxretryn) error("!Maximum command retry count (%d) exceeded",maxretryn);
 535         if (verbose>=2) error(".Retrying phase, %d out of %d..",retrycnt,maxretryn);
 536 }
 537
 538 static char *devcmd(const char *term,const char *catch,const char *send,...)
 539 {
 540 size_t l,bufl,terml,catchl,fragl,offs;
 541 char buf[LINE_MAX];
 542 ssize_t got;
 543 char *hit,*s;
 544 va_list ap;
 545 char errout;
 546
 547         if (!term) term="\nOK\n";
 548         if ((errout=(*send=='!'))) send++;
 549         if (0) {
 550 err:
 551                 alarm(0);
 552                 if (errout) return(NULL);
 553                 retrying();
 554                 }
 555         catchdatal=0;
 556         va_start(ap,send);
 557         l=VARVPRINTF(buf,send,ap); bufl=l+1;
 558         va_end(ap);
 559         if (bufl>=sizeof(buf)-1) error("!Command too big (%d>%d)",bufl,sizeof(buf)-1);
 560         if (verbose>=2) error(".devcmd(send=\"%s\",term=\"%s\",catch=\"%s\")",buf,term,catch);
 561         buf[l]='\r'; buf[l+1]='\n';
 562         for (offs=0,got=0;offs<bufl;offs++) {
 563                 alarm(MAXSENDTIME);
 564                 usleep((offs?chartimen:cmdtimen)*1000);
 565                 if (!offs && tcflush(devfd,TCIOFLUSH))
 566                         error("Error flushing I/O queue of device: %m");
 567                 if (write(devfd,buf+offs,1)!=1) break;
 568                 got++;
 569                 if (tcdrain(devfd))
 570                         error("Error forcing output of char %d of cmd \"%s\": %m",offs,buf);
 571                 }
 572         alarm(0);
 573         if (got!=bufl) {
 574                 error("Wrote only %d of %d bytes of command: %m",got,bufl);
 575                 goto err;
 576                 }
 577
 578         if (!(terml=strlen(term))) {
 579                 assert(!catch);
 580                 return(NULL);
 581                 }
 582         if (catch) {
 583                 catchl=strlen(catch);
 584                 fragl=MAX(terml,catchl);
 585                 }
 586         else fragl=terml;
 587         fragl=MAX(fragl,MAX(strlen(ERROR_SUBSTR1),strlen(ERROR_SUBSTR2)));
 588         bufl=0;
 589         record=NULL;
 590         wasalarm=0;
 591         alarm(readtimen);
 592         for (;;) {
 593                 blocking(0);
 594                 errno=0;
 595                 got=read(devfd,buf+bufl,sizeof(buf)-1-bufl);
 596                 if (got==-1 && errno==EAGAIN) {
 597                         blocking(1);
 598                         errno=0;
 599                         got=read(devfd,buf+bufl,1);
 600                         }
 601                 if (got<=0) {
 602                         if (wasalarm) error("!Maximum response timeout (%ds) exceeded",readtimen);
 603                         error("Couldn't read device data (ret=%d): %m",got);
 604                         goto err;
 605                         }
 606                 s=buf+bufl;
 607                 bufl+=got;
 608                 /* FIXME: '\0' conversion */
 609                 while (buf+bufl>s && (s=memchr(s,'\r',buf+bufl-s))) *s='\n';
 610                 catched(buf+bufl); assert(!record || record==buf+bufl);
 611                 assert(bufl<sizeof(buf));
 612                 if (bufl>=fragl) {
 613                         buf[bufl]='\0';
 614                         assert(strlen(buf)==bufl);
 615                         /* d3(">%s|%s<\n",buf,term); */
 616                         if (strstr(buf,ERROR_SUBSTR1) || strstr(buf,ERROR_SUBSTR2)) {
 617                                 error("Found ERROR response on command \"%s\"",send);
 618                                 goto err;
 619                                 }
 620                         if (catch && bufl>=catchl && (hit=strstr(buf,catch))) {
 621                                 record=hit+catchl;
 622                                 catched(buf+bufl); assert(!record || record==buf+bufl);
 623                                 }
 624                         if (         bufl>= terml && (hit=strstr(buf,term))) break;
 625                         memmove(buf,buf+bufl-(fragl-1),fragl-1);
 626                         bufl=fragl-1;
 627                         if (record) record=buf+bufl;
 628                         }
 629                 }
 630         alarm(0);
 631         if (!catchdatal) {
 632                 if (!catch) return(NULL);
 633                 error("Data requested on command \"%s\" but no found after term \"%s\"",send,term);
 634                 goto err;
 635                 }
 636         assert(!!catch);
 637         record=buf;
 638         buf[0]='\0';
 639         catched(buf+1);
 640         if (verbose>=2) error(".Returning data \"%s\" for cmd \"%s\"",catchdata,send);
 641         return(catchdata);
 642 }
 643
 644 static int prepaddr(unsigned char *d,const char *addr)
 645 {
 646 int tot=0;
 647 char flip=0,plus;
 648 unsigned char n;
 649
 650         if ((plus=(*addr=='+'))) addr++;
 651         *++d=(plus?ADDR_INT:ADDR_NAT);
 652         while (*addr) {
 653                 if (*addr<'0' || *addr>'9')
 654                         error("!Error during conversion of number at: %s",addr);
 655                 tot++;
 656                 n=(*addr++)-'0';
 657                 if ((flip=!flip)) *++d=0xF0|n;
 658                 else *d=(*d&0x0F)|(n<<4U);
 659                 }
 660         return(tot);
 661 }
 662
 663 static char *finalsmsc;
 664 #define SMSCBINSIZE (1+1+(MAXNUMLEN+1)/2)
 665 static char pdusmsc[SMSCBINSIZE*2+1];
 666
 667 static inline char tohex(unsigned char x)
 668 {
 669         x&=0x0F;
 670         if (x<10) return(x   +'0');
 671                   return(x-10+'A');
 672 }
 673
 674 static void textconv(char *d,unsigned char *s,size_t len)
 675 {
 676         while (len--) {
 677                 *d++=tohex(*s>>4U);
 678                 *d++=tohex(*s    );
 679                 s++;
 680                 }
 681         *d='\0';
 682 }
 683
 684 static inline void smscset(void)
 685 {
 686 char *s,*t,*e,*serr;
 687 long l;
 688 unsigned char bin[2+(MAXNUMLEN+1)/2];
 689
 690         if (smsc) devcmd(NULL,NULL,"\r\nAT+CSCA=\"%s\"",smsc);
 691         s=devcmd(NULL,"\n+CSCA:","\r\nAT+CSCA?");
 692         while (isspace(*s)) s++;
 693         if (!*s || !strcmp(s,"EMPTY"))
 694                 error("!No SMS set in A1 found");
 695         if (verbose>=1) error("\nFound default SMSC in A1: %s",s);
 696         if (*s!='"') error("!No left-quote found in: %s",s);
 697         if (!(t=strrchr(s+1,'"'))) error("!No right-quote found in: %s",s);
 698         e=t++;
 699         while (isspace(*t)) t++;
 700         if (*t++!=',') error("!No comma found after quotes in: %s",s);
 701         while (isspace(*t)) t++;
 702         l=strtol(t,&serr,10);
 703         if ((l!=ADDR_NAT && l!=ADDR_INT) || (serr && *serr))
 704                 error("!Type parse error in: %s",s);
 705         if (l==ADDR_NAT || s[1]=='+') s++;
 706         else *s='+';
 707         *e='\0';
 708         chk(finalsmsc=strdup(s));
 709         if (verbose>=2) error("\nDecoded SMSC address: %s",finalsmsc);
 710         bin[0]=1+(prepaddr(bin,finalsmsc)+1)/2;
 711         textconv(pdusmsc,bin,bin[0]+1);
 712 }
 713
 714 static char *pdudata;
 715
 716 static inline unsigned char charconv(char c,size_t offs)
 717 {
 718         if ((c>='A' && c<='Z') || (c>='a' && c<='z') || (c>='0' && c<='9')) return(c);
 719         switch (c) {
 720                 case '@': return(0);
 721                 case '$': return(2);
 722                 case '"': return(96);
 723                 case ' ':
 724                         return(c);
 725                 case 0: assert(0);
 726                 }
 727         error("Can't convert character '%c' (0x%02X) at offs %d (0-based), substituted '?'",
 728                 c,(unsigned char)c,offs);
 729         return('?');
 730 }
 731
 732 static inline void genpdu(void)
 733 {
 734 static unsigned char pdu[64+MAXNUMLEN/2+(MAXBODYLEN*7)/8];
 735 unsigned char *d=pdu;
 736 int i;
 737 char inb=0,outb=0,xb;
 738 unsigned char inreg;
 739 size_t offs=0;
 740
 741         *d++=PDU_TYPE;
 742         *d++=PDU_MR;
 743         i=prepaddr(d,phone);
 744         *d=i; d+=1+1+(i+1)/2;
 745         *d++=PDU_PID;
 746         *d++=PDU_DCS;
 747         *d++=PDU_VP;
 748         if (bodylen>MAXBODYLEN) {
 749                 error("Body too large (%d>%d), cut",bodylen,MAXBODYLEN);
 750                 bodylen=MAXBODYLEN;
 751                 }
 752         *d=bodylen;
 753         assert(d<pdu+sizeof(pdu));
 754         while (bodylen || inb) {
 755                 if (!inb) {
 756                         assert(bodylen>0); assert(!!*body);
 757                         inreg=charconv(*body++,offs++);
 758                         bodylen--;
 759                         inb=7;
 760                         }
 761                 if (!outb) {
 762                         *++d=0x00;
 763                         outb=8;
 764                         }
 765                 xb=MIN(inb,outb);
 766                 d4("inb=%d,outb=%d,xb=%d\n",inb,outb,xb);
 767                 *d|=((inreg>>(unsigned)(7-inb))&((1<<xb)-1))<<(unsigned)(8-outb);
 768                 inb-=xb; outb-=xb;
 769                 }
 770         d++;
 771         assert(d<pdu+sizeof(pdu));
 772         pdudata=malloc(2*(d-pdu)+1);
 773         textconv(pdudata,pdu,d-pdu);
 774 }
 775
 776 static struct {
 777         char **sp;
 778         long *ip;
 779         const char *const msg;
 780         } numarg[]={
 781                 { &maxretry,&maxretryn,"maxretry" },
 782                 { &readtime,&readtimen,"readtime" },
 783                 { &chartime,&chartimen,"chartime" },
 784                 { &cmdtime ,&cmdtimen ,"cmdtime"  },
 785         };
 786
 787 int main(int argc,char **argv)
 788 {
 789 char *s,*finame;
 790 FILE *fin;
 791 int i;
 792 unsigned fatal=0;
 793
 794         if ((s=strrchr((pname=*argv),'/'))) pname=s+1;
 795         atexit(cleanup);
 796         signal(SIGTERM,(RETSIGTYPE (*)(int))cleanup);
 797         signal(SIGQUIT,(RETSIGTYPE (*)(int))cleanup);
 798         signal(SIGINT ,(RETSIGTYPE (*)(int))cleanup);
 799         signal(SIGHUP ,(RETSIGTYPE (*)(int))cleanup);
 800         processargs(argc,argv,"<command-line>");
 801         if ((s=getenv("HOME"))) {
 802 size_t l=strlen(s);
 803 char *buf=malloc(l+50);
 804
 805                 memcpy(buf,s,l);
 806                 strcpy(buf+l,CONFIG_HOME);
 807                 readfile(buf,1);
 808                 free(buf);
 809                 }
 810         readfile(CONFIG_MAIN,1);
 811
 812         for (i=0;i<NELEM(nullcheck);i++)
 813                 if (!*nullcheck[i].var) {
 814                         error("Missing parameter \"%s\"",nullcheck[i].name);
 815                         fatal++;
 816                         }
 817         if (fatal) error("!Previous error%s considered unrecoverable",(fatal==1?"":"s"));
 818         for (i=0;i<NELEM(emptycheck);i++)
 819                 if (*emptycheck[i] && !**emptycheck[i]) {
 820                         free(*emptycheck[i]);
 821                              *emptycheck[i]=NULL;
 822                         }
 823         if (!logname) logname=DEF_LOGNAME;
 824         if (!lockfile) lockfile=DEF_LOCKFILE;
 825         if (!device) device=DEF_DEVICE;
 826         if (body && readbody) {
 827                 finame=body;
 828                 body=NULL;
 829                 }
 830         else fin=stdin;
 831         if (!body) {
 832                 readbody=0;
 833                 if (verbose>=1)
 834                         error("\nPlease enter the SMS text body, end with EOF (ctrl-D):");
 835                 chk(body=malloc(BODYLOAD));
 836                 bodylen=fread(body,1,BODYLOAD,fin);
 837                 if (bodylen==-1)
 838                         error("!Error reading stream \"%s\": %m",(finame?finame:"<stdin>"));
 839                 }
 840         if (fin!=stdin) {
 841                 chkfclose(fin,finame);
 842                 free(finame);
 843                 }
 844
 845         for (i=0;i<NELEM(numarg);i++) {
 846 char *serr;
 847                 if (!*numarg[i].sp) continue;
 848                 *numarg[i].ip=strtol(*numarg[i].sp,&serr,0);
 849                 if (*numarg[i].ip<0 || *numarg[i].ip>=LONG_MAX || !serr || *serr)
 850                         error("!Number parse error for parameter \"%s\" of \"%s\" at: %s",
 851                                 numarg[i].msg,*numarg[i].sp,serr);
 852                 }
 853
 854         if (!strchr(device,'/')) {
 855 size_t l=strlen(device);
 856                 chk(s=malloc(5+l+1));
 857                 strcpy(s,"/dev/");
 858                 strcpy(s+5,device);
 859                 free(device);
 860                 device=s;
 861                 }
 862         devicename=strrchr(device,'/')+1; assert(!!(devicename-1));
 863         for (i=0,s=lockfile;*s;s++) {
 864                 if (*s!='%') continue;
 865                 s++;
 866                 if (*s=='%') continue;
 867                 if (*s=='s') {
 868                         if (i) error("!Only one \"%%s\" permitted in lockfile format-string");
 869                         i=1; continue;
 870                         }
 871                 error("!Invalid format-character '%c' in lockfile format-string, only \"%%s\" allowed",*s);
 872                 }
 873
 874         if (*logname) {
 875                 if (!(logf=fopen(logname,"a")))
 876                         error("!Error opening log \"%s\" for append: %m",logname);
 877                 logmsg("Starting up: " PACKAGE " " VERSION);
 878                 }
 879         genpdu();
 880
 881         if (lockfile && *lockfile && VARPRINTF(lockreal,lockfile,devicename)>0) {
 882 time_t start,end;
 883                 if (verbose>=1) error(".Locking device \"%s\" by \"%s\"..",device,lockreal);
 884                 time(&start);
 885                 lockdevice();
 886                 time(&end);
 887                 if ((end-=start)>LOCKREPORT)
 888                         logmsg("Device lock succeeded after %d seconds",end);
 889                 }
 890         if (verbose>=1) error(".Opening device \"%s\"..",device);
 891         if ((devfd=open(device,O_RDWR|O_NDELAY))<0)
 892                 error("!Cannot open device \"%s\" for rw-access: %m",device);
 893
 894         if (tcgetattr(devfd,&restios))
 895                 error("Unable to get termios settings: %m");
 896         else {
 897                 restios.c_cflag=(restios.c_cflag&~(CBAUD|CBAUDEX))|B0|HUPCL;
 898                 restios_yes=1;
 899                 }
 900         tios.c_iflag=IGNBRK|IGNPAR|IXON|IXOFF;
 901         tios.c_oflag=0;
 902         tios.c_cflag=CS8|CREAD|CLOCAL|B19200|HUPCL;
 903         tios.c_lflag=IEXTEN|NOFLSH;
 904         memset(tios.c_cc,_POSIX_VDISABLE,sizeof(tios.c_cc));
 905         tios.c_cc[VTIME]=0;
 906         tios.c_cc[VMIN ]=1;
 907             cfsetispeed(&tios,B19200);
 908         if (cfsetospeed(&tios,B19200)|cfsetispeed(&tios,B19200))
 909                 error("Error setting termios baudrate on device: %m");
 910         if (tcflush(devfd,TCIOFLUSH))
 911                 error("Error flushing termios (TCIOFLUSH) on device: %m");
 912         if (tcsetattr(devfd,TCSANOW,&tios))
 913                 error("!Unable to set initial termios device settings: %m");
 914
 915         signal(SIGALRM,(RETSIGTYPE (*)(int))sigalarm);
 916         do {
 917                 devcmd("",NULL,"\r\nAT\x1A");
 918                 devcmd(NULL,NULL,"\r\nAT");
 919                 smscset();
 920                 devcmd(NULL,NULL,"\r\nAT+CMGF=0");
 921                 devcmd("\n> ",NULL,"\r\nAT+CMGS=%d",(strlen(pdusmsc)+strlen(pdudata))/2);
 922                 if (!(s=devcmd(NULL,"\n+CMGS:","!%s%s\x1A",pdusmsc,pdudata))) retrying();
 923                 } while (!s);
 924         while (isspace(*s)) s++;
 925         if (verbose>=1) error("\nMessage successfuly sent with MR: %s",s);
 926         devcmd(NULL,NULL,"\r\nAT");
 927
 928         logmsg("SMS sent (after %d retries), message reference: %s",retrycnt,s);
 929         return(EXIT_SUCCESS);
 930 }