mdsms.c

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