mdsms.c

   1 #include "config.h"
   2 #ifndef lint
   3 static char rcsid[] ATTR_UNUSED = "$Id$";
   4 #endif
   5
   6 /*
   7  * $Log$
   8  * Revision 1.7  1999/07/29 14:39:38  short
   9  * '-f' flag is working now.
  10  *
  11  * Revision 1.6  1999/07/28 10:46:37  short
  12  * Removed strict converting/checking of symbol characters to '?'.
  13  *
  14  * Revision 1.5  1999/07/19 10:02:51  short
  15  * Removed '\xXY' chars for compatibility with Digital UNIX vendor "cc".
  16  *
  17  * Revision 1.4  1999/07/14 01:01:11  short
  18  * Termios made compatible with Digital UNIX 4.0, cfset[io]speed() missing.
  19  *
  20  * Revision 1.3  1999/06/03 11:46:41  short
  21  * Logging (--log) implemented.
  22  *
  23  * Revision 1.2  1999/06/03 10:38:52  short
  24  * Implemented remaining communication timeouts and maximum retry count.
  25  *
  26  * Revision 1.1.1.1  1999/05/26 13:06:26  short
  27  * First alpha release.
  28  *
  29  */
  30
  31 #include "setup.h"
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <signal.h>
  37 #include <stdarg.h>
  38 #include <limits.h>
  39 #include <ctype.h>
  40 #include <string.h>
  41 #include <termios.h>
  42 #include <unistd.h>
  43 #include <assert.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <fcntl.h>
  47 #include <errno.h>
  48 #include <signal.h>
  49 #include <time.h>
  50
  51 #ifdef HAVE_GETOPT_LONG
  52 #include <getopt.h>
  53 #else
  54 #include "getopt.h"
  55 #endif
  56
  57 #if 0
  58 char *strdup(const char *s);
  59 int kill(pid_t pid,int sig);
  60 int snprintf(char *str,size_t n,const char *format,...);
  61 int vsnprintf(char *str,size_t n,const char *format,va_list ap);
  62 void usleep(unsigned long usec);
  63 #endif
  64
  65 #define NELEM(x) (sizeof((x))/sizeof(*(x)))
  66
  67 #ifndef DEBUG
  68 #define dbg(cmd)
  69 #else
  70 #define dbg(cmd) cmd
  71 #endif
  72 /* ANSI C does not allow macro with variable arguments */
  73 #define dO stderr
  74 #define dB(a) dbg(fprintf a)
  75
  76 #define d1(n1)          dB((dO,n1         ))
  77 #define d2(n1,n2)       dB((dO,n1,n2      ))
  78 #define d3(n1,n2,n3)    dB((dO,n1,n2,n3   ))
  79 #define d4(n1,n2,n3,n4) dB((dO,n1,n2,n3,n4))
  80
  81 static const char version[]="This is MobilDock SMS sender (" PACKAGE " " VERSION ")\n";
  82
  83 static int verbose
  84 #ifdef DEBUG
  85         =0xFFFF
  86 #endif
  87         ;
  88 static char *pname;
  89 static int dis_cleanup=0,devfd=-1;
  90
  91 static char *phone,*body,*device,*logname,*lockfile,*smsc,*maxretry,*readtime,*chartime,*cmdtime;
  92 static int readbody;
  93 static long maxretryn=DEF_MAXRETRY,readtimen=DEF_READTIME,chartimen=DEF_CHARTIME,cmdtimen=DEF_CMDTIME;
  94 static size_t bodylen;
  95
  96 static char *devicename; /* path stripped */
  97 static char lockreal[512],locked;
  98
  99 static struct termios restios,tios;
 100 static char restios_yes;
 101 static FILE *logf;
 102
 103 static void vlogmsg(
 104 #ifndef PRINTF_WORKS_PM
 105                 char outerr,
 106 #endif
 107                 const char *fmt,va_list ap)
 108 {
 109 time_t stamp;
 110 char *ctm,*s;
 111 pid_t mypid=-1;
 112 char host[LINE_MAX];
 113
 114         if (!logf) return;
 115         if (mypid==-1) {
 116                 mypid=getpid();
 117                 if (gethostname(host,sizeof(host))) strcpy(host,"<ERROR>");
 118                 }
 119         time(&stamp);
 120         ctm=ctime(&stamp);
 121         if ((s=strchr(ctm,'\n'))) *s='\0';
 122         fprintf(logf,"%s %s %s[%d]: ",ctm,host,pname,mypid);
 123         vfprintf(logf,fmt,ap);
 124 #ifndef PRINTF_WORKS_PM
 125         if (outerr) fputs(strerror(errno),logf);
 126 #endif
 127         fputc('\n',logf);
 128         fflush(logf);
 129 }
 130
 131 static void logmsg(const char *fmt,...)
 132 {
 133 va_list ap;
 134         va_start(ap,fmt);
 135         vlogmsg(
 136 #ifndef PRINTF_WORKS_PM
 137                 0,
 138 #endif
 139                 fmt,ap);
 140         va_end(ap);
 141 }
 142
 143 static void error(const char *fmt,...)
 144 {
 145 va_list ap;
 146 char fatal=*fmt;
 147 #ifndef PRINTF_WORKS_PM
 148 char pm,*nfmt;
 149 size_t fmtl;
 150 #endif
 151
 152         if (fatal=='!' || fatal=='.' || fatal=='\n') fmt++;
 153         else fatal=0;
 154
 155 #ifndef PRINTF_WORKS_PM
 156         if (!(nfmt=strdup(fmt))) return;
 157         fmtl=strlen(fmt);
 158         if ((pm=(fmtl>=2 && !strcmp(fmt+fmtl-2,"%m")))) nfmt[fmtl-2]='\0';
 159 #endif
 160
 161         fprintf(stderr,"%s: ",pname);
 162         va_start(ap,fmt);
 163         vfprintf(stderr,
 164 #ifdef PRINTF_WORKS_PM
 165                 fmt
 166 #else
 167                 nfmt
 168 #endif
 169                 ,ap);
 170         if (fatal=='!') vlogmsg(
 171 #ifdef PRINTF_WORKS_PM
 172                 fmt
 173 #else
 174                 pm,nfmt
 175 #endif
 176                 ,ap);
 177         va_end(ap);
 178
 179 #ifndef PRINTF_WORKS_PM
 180         if (pm) {
 181                 fputs(strerror(errno),stderr);
 182                 free(nfmt);
 183                 }
 184 #endif
 185
 186         if (fatal!='\n') fputc((fatal=='.'?'.':'!'),stderr);
 187         fputc('\n',stderr);
 188         if (fatal=='!') exit(EXIT_FAILURE);
 189 }
 190
 191 static void chk(void *p)
 192 {
 193         if (p) return;
 194         error("!Virtual memory exhausted");
 195 }
 196
 197 static void cleanup(void)
 198 {
 199         d1("cleanup()\n");
 200         if (dis_cleanup) return;
 201         if (restios_yes) {
 202                 if (tcsetattr(devfd,TCSANOW,&restios))
 203                         error("Error restoring termios for device: %m");
 204                 restios_yes=0;
 205                 }
 206         if (locked && *lockreal) {
 207                 d2("Removing lockfile \"%s\"\n",lockreal);
 208                 if (unlink(lockreal))
 209                         error("Error removing my device lockfile \"%s\": %m",lockreal);
 210                 locked=0;
 211                 }
 212         dis_cleanup=1;
 213         exit(EXIT_FAILURE);
 214 }
 215
 216 static void usage(void)
 217 {
 218         fprintf(stderr,"\
 219 \n\
 220 %s\
 221 \n\
 222 Usage: " PACKAGE " [-c|--config <cfgfile>] [-d|--device <device>]\n\
 223              [-L|--log <file>]\n\
 224              [-l|--lockfile <lock>] [-s|--smsc <smsc #>] [-m|--maxretry <#>]\n\
 225              [-r|--readtime <sec>] [-t|--chartime <msec>] [-T|--cmdtime <msec>]\n\
 226              [-f|--file] [-v|--verbose] [-h|--help] [-V|--version]\n\
 227              <dest. phone> <msg text|msg filename>\n\
 228 \n\
 229  -c, --config\tRead this additional config file\n\
 230 \t\t(def. \"" CONFIG_MAIN "\" and \"$HOME" CONFIG_HOME "\")\n\
 231  -d, --device\tMobilDock on this serial device (def. \"" DEF_DEVICE "\")\n\
 232  -L, --log\tLog all important messages to this file (def. \"" DEF_LOGNAME "\")\n\
 233  -l, --lockfile\tLock serial port by this file, \"%%s\" is basename of device\n\
 234 \t\t(def. \"%s\")\n\
 235  -s, --smsc\tUse this SMS Center number (def. query from Siemens A1)\n\
 236  -m, --maxretry\tMaximum retries of any command before giving up (def. %d)\n\
 237  -r, --readtime\tSeconds for maximum wait time for response (def. %ds)\n\
 238  -t, --chartime\tMilliseconds between each char on baud 19200 (def. %dms)\n\
 239  -T, --cmdtime\tMilliseconds before each whole AT command (def. %dms)\n\
 240  -f, --file\tRead contents of message from file instead\n\
 241  -v, --verbose\tIncrease verbosity level, more \"-v\"s give more messages\n\
 242  -h, --help\tPrint a summary of the options\n\
 243  -V, --version\tPrint the version number\n\
 244 \n",version,DEF_LOCKFILE,DEF_MAXRETRY,DEF_READTIME,DEF_CHARTIME,DEF_CMDTIME);
 245         exit(EXIT_FAILURE);
 246 }
 247
 248 static const struct option longopts[]={
 249 {"config"  ,1,0,'c'},
 250 {"device"  ,1,0,'d'},
 251 {"log"     ,1,0,'l'},
 252 {"lockfile",1,0,'l'},
 253 {"smsc"    ,1,0,'s'},
 254 {"maxretry",1,0,'m'},
 255 {"readtime",1,0,'r'},
 256 {"chartime",1,0,'t'},
 257 {"cmdtime" ,1,0,'T'},
 258 {"file"    ,0,0,'f'},
 259 {"verbose" ,0,0,'v'},
 260 {"help"    ,0,0,'h'},
 261 {"version" ,0,0,'V'}};
 262
 263 static void processargs(int argp,char **args,const char *from);
 264
 265 static char *cfgstack[MAXCFGLOOP];
 266 static unsigned cfgstacki=0;
 267
 268 static void chkfclose(FILE *f,const char *fname)
 269 {
 270         if (fclose(f))
 271                 error("Error closing \"%s\": %m",fname);
 272 }
 273
 274 static void readfile(const char *fname,char quiet)
 275 {
 276 FILE *f;
 277 size_t got;
 278 char *args[MAXCFGARGS],*d,*s,blank,quote;
 279 unsigned argp;
 280 char *buf;
 281 long size;
 282 static unsigned tot=0;
 283
 284         if (tot++>=MAXCFGNUM) {
 285                 if (tot==MAXCFGNUM+1) error("Too many config files to read, max is %d, break-out",MAXCFGNUM);
 286                 return;
 287                 }
 288         if (!(f=fopen(fname,"rt"))) {
 289                 if (!quiet) error("Can't open config file \"%s\" for r/o: %m",fname);
 290                 return;
 291                 }
 292         if (verbose>=2) error(".Reading config file \"%s\"",fname);
 293         if (fseek(f,0,SEEK_END))
 294                 error("Error seeking to end of \"s\": %m",fname);
 295         if ((size=ftell(f))<0)
 296                 size=0,error("Error measuring \"%s\": %m",fname);
 297         if (size>MAXCONFIG)
 298                 error("File \"%s\" is too long, read only %ld bytes",fname,MAXCONFIG);
 299         chk(buf=malloc((size?size:MAXCONFIG)+1));
 300         rewind(f);
 301         got=fread(buf,1,(size?size:MAXCONFIG),f);
 302         if (size && got!=size)
 303                 error("File \"%s\" read error, got only %u bytes of %ld",fname,got,size);
 304         chkfclose(f,fname);
 305         buf[got]='\0';
 306         args[0]=pname;
 307         for (argp=1,d=s=buf,blank=1,quote=0;s<buf+got;s++) {
 308 char c=*s;
 309
 310                 if (!quote && isspace(c)) {
 311                         if (!blank) {
 312                                 *d='\0';
 313                                 blank=1;
 314                                 if (verbose>=2) error("\nConfig \"%s\": arg#%d: %s",fname,argp-1,args[argp-1]);
 315                                 }
 316                         continue;
 317                         }
 318                 if (blank) {
 319                         if (argp>=NELEM(args)-1) {
 320                                 error("Too many arguments in \"%s\", from offset %d ignored",fname,s-buf);
 321                                 break;
 322                                 }
 323                         args[argp++]=s;
 324                         d=s;
 325                         blank=0;
 326                         }
 327                 if (c=='\\') { *d++=*++s; continue; }
 328                 if (c=='"' || c=='\'') {
 329                         if (!quote   ) { quote=c; continue; }
 330                         if ( quote==c) { quote=0; continue; }
 331                         /* FALLTHRU */
 332                         }
 333                 *d++=c;
 334                 }
 335         args[argp]=NULL;
 336         processargs(argp,args,fname);
 337         free(buf);
 338 }
 339
 340 static struct {
 341         const char c;
 342         char **const var;
 343         unsigned stamp;
 344         } optset[]={
 345                 { 'd',&device   },
 346                 { 'L',&logname  },
 347                 { 'l',&lockfile },
 348                 { 's',&smsc     },
 349                 { 'm',&maxretry },
 350                 { 'r',&readtime },
 351                 { 't',&chartime },
 352                 { 'T',&cmdtime  },
 353         };
 354
 355 static void processargs(int argp,char **args,const char *from)
 356 {
 357 int optc;
 358 static unsigned seq=0;
 359 int i;
 360
 361         seq++;
 362         optarg=NULL; optind=0; /* FIXME: Possible portability problem. */
 363         while ((optc=getopt_long(argp,args,"c:d:L:l:s:m:r:t:T:fvhV",longopts,NULL))!=EOF) switch (optc) {
 364                 case 'c':
 365                         if (cfgstacki>=NELEM(cfgstack)) {
 366                                 error("Looping (%d) during attempt to read config file \"%s\", break-out",NELEM(cfgstack),optind);
 367                                 break;
 368                                 }
 369                         chk(cfgstack[cfgstacki++]=strdup(optarg));
 370                         break;
 371                 case 'd': case 'L': case 'l': case 's': case 'm': case 'r': case 't': case 'T':
 372                         for (i=0;i<NELEM(optset);i++)
 373                                 if (optset[i].c==optc) {
 374                                         if (optset[i].stamp && optset[i].stamp!=seq) {
 375                                                 assert(!!*optset[i].var);
 376                                                 break;
 377                                                 }
 378                                         free(*optset[i].var);
 379                                         chk(*optset[i].var=strdup(optarg));
 380                                         optset[i].stamp=seq;
 381                                         break;
 382                                         }
 383                         assert(i<NELEM(optset));
 384                         break;
 385                 case 'f':
 386                         readbody++;
 387                         break;
 388                 case 'v':
 389                         verbose++;
 390                         break;
 391                 case 'V':
 392                         fprintf(stderr,version);
 393                         exit(EXIT_FAILURE);
 394                 default:
 395                         if (optc!='h')
 396                                 error("\nLast getopt(3) error occured during parsing option %d from \"%s\"! Follows help:",optind-1,from);
 397                         usage();
 398                         break;
 399                 }
 400         if (!phone && optind<argp)
 401                 chk(phone=strdup(args[optind++]));
 402         if (!body && optind<argp) {
 403 char *d;
 404 int i;
 405
 406                 for (i=optind,bodylen=argp-optind;i<argp;i++)
 407                         bodylen+=strlen(args[i]);
 408                 chk(body=malloc(bodylen));
 409                 for (d=body,i=optind;i<argp;i++) {
 410 size_t l=strlen(args[i]);
 411                         memcpy(d,args[i],l);
 412                         d+=l;
 413                         *d++=' ';
 414                         assert(d<=body+bodylen);
 415                         }
 416                 assert(d==body+bodylen);
 417                 d[-1]='\0';
 418                 bodylen--;
 419                 }
 420         while (cfgstacki) {
 421 char *s=cfgstack[--cfgstacki];
 422
 423                 assert(cfgstacki>=0);
 424                 readfile(s,0);
 425                 free(s);
 426                 assert(cfgstacki>=0 && cfgstacki<NELEM(cfgstack));
 427                 }
 428 }
 429
 430 static const struct {
 431         char **var;
 432         const char *name;
 433         } nullcheck[]={
 434                 {&phone,"destination phone number"},
 435 #if 0
 436                 {&body ,"body text"},
 437                 {&device,"device for communication"},
 438 #endif
 439         };
 440 static char **emptycheck[]={&logname,&smsc,&body};
 441
 442 static void lockclose(int fd)
 443 {
 444         if (close(fd))
 445                 error("Error closing lockfile \"%s\"",lockreal);
 446 }
 447
 448 static inline void lockdevice(void)
 449 {
 450 int fd=-1;
 451 char buf[64];
 452 ssize_t got;
 453 int delay=0;
 454 char empty=0;
 455 pid_t pid;
 456
 457         for (;;) {
 458                 if (fd!=-1) lockclose(fd);
 459 recheck:
 460                 if (delay) sleep(delay);
 461                 delay=DEVLOCK_PERIOD;
 462                 if (verbose>=3) error(".Checking the lockfile \"%s\"..",lockreal);
 463                 if ((fd=open(lockreal,O_RDONLY))==-1) break;
 464                 if ((got=read(fd,buf,sizeof(buf)-1))<=0) {
 465 isempty:
 466                         if (empty>=DEVLOCK_MAXEMPTY) {
 467                                 error(".Lockfile \"%s\" is still not valid, removing it",lockreal);
 468                                 goto remove;
 469                                 }
 470                         empty++;
 471                         continue;
 472                         }
 473                 assert(got<sizeof(buf));
 474                 buf[got]='\0';
 475                 if (sscanf(buf,"%d",&pid)!=1) goto isempty;
 476                 empty=0;
 477                 errno=0;
 478                 if (kill(pid,0) && errno!=ESRCH && errno!=EPERM)
 479                         error("Error during checking consciousness of PID %d: %m",pid);
 480                 if (errno!=ESRCH) continue;
 481                 error(".Lockfile \"%s\" is stale (PID %d), removing it",lockreal,pid);
 482 remove:
 483                 lockclose(fd);
 484                 if (unlink(lockreal))
 485                         error("Error removing foreign lockfile \"%s\": %m",lockreal);
 486                 break;
 487                 }
 488         errno=0;
 489         if ((fd=open(lockreal,O_WRONLY|O_CREAT|O_EXCL,0644))==-1) {
 490                 if (errno==EEXIST) goto recheck;
 491                 error("!Error creating lockfile \"%s\": %m",lockreal);
 492                 }
 493         locked=1;
 494         got=VARPRINTF(buf,"%010d\n",getpid()); assert(got==11);
 495         if (write(fd,buf,got)!=got)
 496                 error("!Error writing data to lockfile \"%s\": %m",lockreal);
 497         lockclose(fd);
 498 }
 499
 500 static char wasalarm=0;
 501 static void sigalarm(int signo)
 502 {
 503         signal(SIGALRM,(RETSIGTYPE (*)(int))sigalarm);
 504         wasalarm=1;
 505         if (verbose>=1) error("Timed out");
 506 }
 507
 508 static void blocking(char yes)
 509 {
 510 static char state=-1;
 511         if (state==yes) return;
 512         if (fcntl(devfd,F_SETFL,(yes?0:O_NONBLOCK)))
 513                 error("!fcntl() on device for %sblocking mode: %m",(yes?"":"non-"));
 514         state=yes;
 515 }
 516
 517 static const char *record;
 518 static char *catchdata;
 519 static size_t catchdatal,catchdatasiz;
 520
 521 static void catched(const char *end)
 522 {
 523 size_t len;
 524 void *p;
 525
 526         if (!record) return;
 527         assert(end>=record);
 528         if ((p=memchr(record,'\n',end-record))) end=p;
 529         if ((len=end-record)) {
 530                 if (catchdatal+len>catchdatasiz)
 531                         chk(catchdata=realloc(catchdata,
 532                                 (catchdatasiz=MAX(LINE_MAX,(catchdatal+len)*2))));
 533                 memcpy(catchdata+catchdatal,record,len);
 534                 catchdatal+=len;
 535                 }
 536         record=(p?NULL:end);
 537         assert(catchdatal<=catchdatasiz);
 538 }
 539
 540 static int retrycnt=0;
 541 static void retrying(void)
 542 {
 543         if (++retrycnt>maxretryn) error("!Maximum command retry count (%d) exceeded",maxretryn);
 544         if (verbose>=2) error(".Retrying phase, %d out of %d..",retrycnt,maxretryn);
 545 }
 546
 547 static char *devcmd(const char *term,const char *catch,const char *send,...)
 548 {
 549 size_t l,bufl,terml,catchl,fragl,offs;
 550 char buf[LINE_MAX];
 551 ssize_t got;
 552 char *hit,*s;
 553 va_list ap;
 554 char errout;
 555
 556         if (!term) term="\nOK\n";
 557         if ((errout=(*send=='!'))) send++;
 558         if (0) {
 559 err:
 560                 alarm(0);
 561                 if (errout) return(NULL);
 562                 retrying();
 563                 }
 564         catchdatal=0;
 565         va_start(ap,send);
 566         l=VARVPRINTF(buf,send,ap); bufl=l+1;
 567         va_end(ap);
 568         if (bufl>=sizeof(buf)-1) error("!Command too big (%d>%d)",bufl,sizeof(buf)-1);
 569         if (verbose>=2) error(".devcmd(send=\"%s\",term=\"%s\",catch=\"%s\")",buf,term,catch);
 570         buf[l]='\r'; buf[l+1]='\n';
 571         for (offs=0,got=0;offs<bufl;offs++) {
 572                 alarm(MAXSENDTIME);
 573                 usleep((offs?chartimen:cmdtimen)*1000);
 574                 if (!offs && tcflush(devfd,TCIOFLUSH))
 575                         error("Error flushing I/O queue of device: %m");
 576                 if (write(devfd,buf+offs,1)!=1) break;
 577                 got++;
 578                 if (tcdrain(devfd))
 579                         error("Error forcing output of char %d of cmd \"%s\": %m",offs,buf);
 580                 }
 581         alarm(0);
 582         if (got!=bufl) {
 583                 error("Wrote only %d of %d bytes of command: %m",got,bufl);
 584                 goto err;
 585                 }
 586
 587         if (!(terml=strlen(term))) {
 588                 assert(!catch);
 589                 return(NULL);
 590                 }
 591         if (catch) {
 592                 catchl=strlen(catch);
 593                 fragl=MAX(terml,catchl);
 594                 }
 595         else fragl=terml;
 596         fragl=MAX(fragl,MAX(strlen(ERROR_SUBSTR1),strlen(ERROR_SUBSTR2)));
 597         bufl=0;
 598         record=NULL;
 599         wasalarm=0;
 600         alarm(readtimen);
 601         for (;;) {
 602                 blocking(0);
 603                 errno=0;
 604                 got=read(devfd,buf+bufl,sizeof(buf)-1-bufl);
 605                 if (got==-1 && errno==EAGAIN) {
 606                         blocking(1);
 607                         errno=0;
 608                         got=read(devfd,buf+bufl,1);
 609                         }
 610                 if (got<=0) {
 611                         if (wasalarm) error("!Maximum response timeout (%ds) exceeded",readtimen);
 612                         error("Couldn't read device data (ret=%d): %m",got);
 613                         goto err;
 614                         }
 615                 s=buf+bufl;
 616                 bufl+=got;
 617                 /* FIXME: '\0' conversion */
 618                 while (buf+bufl>s && (s=memchr(s,'\r',buf+bufl-s))) *s='\n';
 619                 catched(buf+bufl); assert(!record || record==buf+bufl);
 620                 assert(bufl<sizeof(buf));
 621                 if (bufl>=fragl) {
 622                         buf[bufl]='\0';
 623                         assert(strlen(buf)==bufl);
 624                         /* d3(">%s|%s<\n",buf,term); */
 625                         if (strstr(buf,ERROR_SUBSTR1) || strstr(buf,ERROR_SUBSTR2)) {
 626                                 error("Found ERROR response on command \"%s\"",send);
 627                                 goto err;
 628                                 }
 629                         if (catch && bufl>=catchl && (hit=strstr(buf,catch))) {
 630                                 record=hit+catchl;
 631                                 catched(buf+bufl); assert(!record || record==buf+bufl);
 632                                 }
 633                         if (         bufl>= terml && (hit=strstr(buf,term))) break;
 634                         memmove(buf,buf+bufl-(fragl-1),fragl-1);
 635                         bufl=fragl-1;
 636                         if (record) record=buf+bufl;
 637                         }
 638                 }
 639         alarm(0);
 640         if (!catchdatal) {
 641                 if (!catch) return(NULL);
 642                 error("Data requested on command \"%s\" but no found after term \"%s\"",send,term);
 643                 goto err;
 644                 }
 645         assert(!!catch);
 646         record=buf;
 647         buf[0]='\0';
 648         catched(buf+1);
 649         if (verbose>=2) error(".Returning data \"%s\" for cmd \"%s\"",catchdata,send);
 650         return(catchdata);
 651 }
 652
 653 static int prepaddr(unsigned char *d,const char *addr)
 654 {
 655 int tot=0;
 656 char flip=0,plus;
 657 unsigned char n;
 658
 659         if ((plus=(*addr=='+'))) addr++;
 660         *++d=(plus?ADDR_INT:ADDR_NAT);
 661         while (*addr) {
 662                 if (*addr<'0' || *addr>'9')
 663                         error("!Error during conversion of number at: %s",addr);
 664                 tot++;
 665                 n=(*addr++)-'0';
 666                 if ((flip=!flip)) *++d=0xF0|n;
 667                 else *d=(*d&0x0F)|(n<<4U);
 668                 }
 669         return(tot);
 670 }
 671
 672 static char *finalsmsc;
 673 #define SMSCBINSIZE (1+1+(MAXNUMLEN+1)/2)
 674 static char pdusmsc[SMSCBINSIZE*2+1];
 675
 676 static inline char tohex(unsigned char x)
 677 {
 678         x&=0x0F;
 679         if (x<10) return(x   +'0');
 680                   return(x-10+'A');
 681 }
 682
 683 static void textconv(char *d,unsigned char *s,size_t len)
 684 {
 685         while (len--) {
 686                 *d++=tohex(*s>>4U);
 687                 *d++=tohex(*s    );
 688                 s++;
 689                 }
 690         *d='\0';
 691 }
 692
 693 static inline void smscset(void)
 694 {
 695 char *s,*t,*e,*serr;
 696 long l;
 697 unsigned char bin[2+(MAXNUMLEN+1)/2];
 698
 699         if (smsc) devcmd(NULL,NULL,"\r\nAT+CSCA=\"%s\"",smsc);
 700         s=devcmd(NULL,"\n+CSCA:","\r\nAT+CSCA?");
 701         while (isspace(*s)) s++;
 702         if (!*s || !strcmp(s,"EMPTY"))
 703                 error("!No SMS set in A1 found");
 704         if (verbose>=1) error("\nFound default SMSC in A1: %s",s);
 705         if (*s!='"') error("!No left-quote found in: %s",s);
 706         if (!(t=strrchr(s+1,'"'))) error("!No right-quote found in: %s",s);
 707         e=t++;
 708         while (isspace(*t)) t++;
 709         if (*t++!=',') error("!No comma found after quotes in: %s",s);
 710         while (isspace(*t)) t++;
 711         l=strtol(t,&serr,10);
 712         if ((l!=ADDR_NAT && l!=ADDR_INT) || (serr && *serr))
 713                 error("!Type parse error in: %s",s);
 714         if (l==ADDR_NAT || s[1]=='+') s++;
 715         else *s='+';
 716         *e='\0';
 717         chk(finalsmsc=strdup(s));
 718         if (verbose>=2) error("\nDecoded SMSC address: %s",finalsmsc);
 719         bin[0]=1+(prepaddr(bin,finalsmsc)+1)/2;
 720         textconv(pdusmsc,bin,bin[0]+1);
 721 }
 722
 723 static char *pdudata;
 724
 725 static inline unsigned char charconv(char c,size_t offs)
 726 {
 727         switch (c) {
 728                 case '@': return(0);
 729                 case '$': return(2);
 730                 case 0: assert(0);
 731                 default:
 732                         return(c&0x7F);
 733                 }
 734 #if 0
 735         if ((c>='A' && c<='Z') || (c>='a' && c<='z') || (c>='0' && c<='9')) return(c);
 736         error("Can't convert character '%c' (0x%02X) at offs %d (0-based), substituted '?'",
 737                 c,(unsigned char)c,offs);
 738         return('?');
 739 #endif
 740 }
 741
 742 static inline void genpdu(void)
 743 {
 744 static unsigned char pdu[64+MAXNUMLEN/2+(MAXBODYLEN*7)/8];
 745 unsigned char *d=pdu;
 746 int i;
 747 char inb=0,outb=0,xb;
 748 unsigned char inreg;
 749 size_t offs=0;
 750
 751         *d++=PDU_TYPE;
 752         *d++=PDU_MR;
 753         i=prepaddr(d,phone);
 754         *d=i; d+=1+1+(i+1)/2;
 755         *d++=PDU_PID;
 756         *d++=PDU_DCS;
 757         *d++=PDU_VP;
 758         if (bodylen>MAXBODYLEN) {
 759                 error("Body too large (%d>%d), cut",bodylen,MAXBODYLEN);
 760                 bodylen=MAXBODYLEN;
 761                 }
 762         *d=bodylen;
 763         assert(d<pdu+sizeof(pdu));
 764         while (bodylen || inb) {
 765                 if (!inb) {
 766                         assert(bodylen>0); assert(!!*body);
 767                         inreg=charconv(*body++,offs++);
 768                         bodylen--;
 769                         inb=7;
 770                         }
 771                 if (!outb) {
 772                         *++d=0x00;
 773                         outb=8;
 774                         }
 775                 xb=MIN(inb,outb);
 776                 d4("inb=%d,outb=%d,xb=%d\n",inb,outb,xb);
 777                 *d|=((inreg>>(unsigned)(7-inb))&((1<<xb)-1))<<(unsigned)(8-outb);
 778                 inb-=xb; outb-=xb;
 779                 }
 780         d++;
 781         assert(d<pdu+sizeof(pdu));
 782         pdudata=malloc(2*(d-pdu)+1);
 783         textconv(pdudata,pdu,d-pdu);
 784 }
 785
 786 static struct {
 787         char **sp;
 788         long *ip;
 789         const char *const msg;
 790         } numarg[]={
 791                 { &maxretry,&maxretryn,"maxretry" },
 792                 { &readtime,&readtimen,"readtime" },
 793                 { &chartime,&chartimen,"chartime" },
 794                 { &cmdtime ,&cmdtimen ,"cmdtime"  },
 795         };
 796
 797 int main(int argc,char **argv)
 798 {
 799 char *s,*finame;
 800 FILE *fin;
 801 int i;
 802 unsigned fatal=0;
 803
 804         if ((s=strrchr((pname=*argv),'/'))) pname=s+1;
 805         atexit(cleanup);
 806         signal(SIGTERM,(RETSIGTYPE (*)(int))cleanup);
 807         signal(SIGQUIT,(RETSIGTYPE (*)(int))cleanup);
 808         signal(SIGINT ,(RETSIGTYPE (*)(int))cleanup);
 809         signal(SIGHUP ,(RETSIGTYPE (*)(int))cleanup);
 810         processargs(argc,argv,"<command-line>");
 811         if ((s=getenv("HOME"))) {
 812 size_t l=strlen(s);
 813 char *buf=malloc(l+50);
 814
 815                 memcpy(buf,s,l);
 816                 strcpy(buf+l,CONFIG_HOME);
 817                 readfile(buf,1);
 818                 free(buf);
 819                 }
 820         readfile(CONFIG_MAIN,1);
 821
 822         for (i=0;i<NELEM(nullcheck);i++)
 823                 if (!*nullcheck[i].var) {
 824                         error("Missing parameter \"%s\"",nullcheck[i].name);
 825                         fatal++;
 826                         }
 827         if (fatal) error("!Previous error%s considered unrecoverable",(fatal==1?"":"s"));
 828         for (i=0;i<NELEM(emptycheck);i++)
 829                 if (*emptycheck[i] && !**emptycheck[i]) {
 830                         free(*emptycheck[i]);
 831                              *emptycheck[i]=NULL;
 832                         }
 833         if (!logname) logname=DEF_LOGNAME;
 834         if (!lockfile) lockfile=DEF_LOCKFILE;
 835         if (!device) device=DEF_DEVICE;
 836         if (body && readbody) {
 837                 finame=body;
 838                 body=NULL;
 839                 }
 840         else {
 841                 finame=NULL;
 842                 fin=stdin;
 843                 }
 844         if (!body) {
 845                 readbody=0;
 846                 if (!finame) {
 847                         if (verbose>=1)
 848                                 error("\nPlease enter the SMS text body, end with EOF (ctrl-D):");
 849                         }
 850                 else {
 851                         if (!(fin=fopen(finame,"rt")))
 852                                 error("!Can't open data file \"%s\" for r/o: %m",finame);
 853                         }
 854                 chk(body=malloc(BODYLOAD));
 855                 bodylen=fread(body,1,BODYLOAD,fin);
 856                 if (bodylen==-1)
 857                         error("!Error reading stream \"%s\": %m",(finame?finame:"<stdin>"));
 858                 if (finame) {
 859                         chkfclose(fin,finame);
 860                         free(finame);
 861                         }
 862                 }
 863
 864         for (i=0;i<NELEM(numarg);i++) {
 865 char *serr;
 866                 if (!*numarg[i].sp) continue;
 867                 *numarg[i].ip=strtol(*numarg[i].sp,&serr,0);
 868                 if (*numarg[i].ip<0 || *numarg[i].ip>=LONG_MAX || !serr || *serr)
 869                         error("!Number parse error for parameter \"%s\" of \"%s\" at: %s",
 870                                 numarg[i].msg,*numarg[i].sp,serr);
 871                 }
 872
 873         if (!strchr(device,'/')) {
 874 size_t l=strlen(device);
 875                 chk(s=malloc(5+l+1));
 876                 strcpy(s,"/dev/");
 877                 strcpy(s+5,device);
 878                 free(device);
 879                 device=s;
 880                 }
 881         devicename=strrchr(device,'/')+1; assert(!!(devicename-1));
 882         for (i=0,s=lockfile;*s;s++) {
 883                 if (*s!='%') continue;
 884                 s++;
 885                 if (*s=='%') continue;
 886                 if (*s=='s') {
 887                         if (i) error("!Only one \"%%s\" permitted in lockfile format-string");
 888                         i=1; continue;
 889                         }
 890                 error("!Invalid format-character '%c' in lockfile format-string, only \"%%s\" allowed",*s);
 891                 }
 892
 893         if (*logname) {
 894                 if (!(logf=fopen(logname,"a")))
 895                         error("!Error opening log \"%s\" for append: %m",logname);
 896                 logmsg("Starting up: " PACKAGE " " VERSION);
 897                 }
 898         genpdu();
 899
 900         if (lockfile && *lockfile && VARPRINTF(lockreal,lockfile,devicename)>0) {
 901 time_t start,end;
 902                 if (verbose>=1) error(".Locking device \"%s\" by \"%s\"..",device,lockreal);
 903                 time(&start);
 904                 lockdevice();
 905                 time(&end);
 906                 if ((end-=start)>LOCKREPORT)
 907                         logmsg("Device lock succeeded after %d seconds",end);
 908                 }
 909         if (verbose>=1) error(".Opening device \"%s\"..",device);
 910         if ((devfd=open(device,O_RDWR|O_NDELAY))<0)
 911                 error("!Cannot open device \"%s\" for rw-access: %m",device);
 912
 913         if (tcgetattr(devfd,&restios))
 914                 error("Unable to get termios settings: %m");
 915         else {
 916                 restios.c_cflag=(restios.c_cflag&~(CBAUD|CBAUDEX))|B0|HUPCL;
 917                 restios_yes=1;
 918                 }
 919         tios.c_iflag=IGNBRK|IGNPAR|IXON|IXOFF;
 920         tios.c_oflag=0;
 921         tios.c_cflag=CS8|CREAD|CLOCAL|B19200|HUPCL;
 922         tios.c_lflag=IEXTEN|NOFLSH;
 923         memset(tios.c_cc,_POSIX_VDISABLE,sizeof(tios.c_cc));
 924         tios.c_cc[VTIME]=0;
 925         tios.c_cc[VMIN ]=1;
 926             cfsetispeed(&tios,B19200);
 927         if (cfsetospeed(&tios,B19200)|cfsetispeed(&tios,B19200))
 928                 error("Error setting termios baudrate on device: %m");
 929         if (tcflush(devfd,TCIOFLUSH))
 930                 error("Error flushing termios (TCIOFLUSH) on device: %m");
 931         if (tcsetattr(devfd,TCSANOW,&tios))
 932                 error("!Unable to set initial termios device settings: %m");
 933
 934         signal(SIGALRM,(RETSIGTYPE (*)(int))sigalarm);
 935         do {
 936                 devcmd("",NULL,"\r\nAT\032");
 937                 devcmd(NULL,NULL,"\r\nAT");
 938                 smscset();
 939                 devcmd(NULL,NULL,"\r\nAT+CMGF=0");
 940                 devcmd("\n> ",NULL,"\r\nAT+CMGS=%d",(strlen(pdusmsc)+strlen(pdudata))/2);
 941                 if (!(s=devcmd(NULL,"\n+CMGS:","!%s%s\032",pdusmsc,pdudata))) retrying();
 942                 } while (!s);
 943         while (isspace(*s)) s++;
 944         if (verbose>=1) error("\nMessage successfuly sent with MR: %s",s);
 945         devcmd(NULL,NULL,"\r\nAT");
 946
 947         logmsg("SMS sent (after %d retries), message reference: %s",retrycnt,s);
 948         return(EXIT_SUCCESS);
 949 }