mdsms.c

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