mdsms.c

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