mdsms.c

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