1*13235Sralph /* common.c 4.7 83/06/22 */ 212117Sralph /* 312117Sralph * Routines and data common to all the line printer functions. 412117Sralph */ 512117Sralph 612117Sralph #include "lp.h" 712117Sralph 812117Sralph int DU; /* daeomon user-id */ 912117Sralph int MX; /* maximum number of blocks to copy */ 1013170Sralph int MC; /* maximum number of copies allowed */ 1112117Sralph char *LP; /* line printer device name */ 1212117Sralph char *RM; /* remote machine name */ 1312117Sralph char *RP; /* remote printer name */ 1412117Sralph char *LO; /* lock file name */ 1512117Sralph char *ST; /* status file name */ 1612117Sralph char *SD; /* spool directory */ 1712117Sralph char *AF; /* accounting file */ 1812117Sralph char *LF; /* log file for error messages */ 1912117Sralph char *OF; /* name of output filter (created once) */ 2012117Sralph char *IF; /* name of input filter (created per job) */ 2112433Sralph char *RF; /* name of fortran text filter (per job) */ 2212117Sralph char *TF; /* name of troff filter (per job) */ 23*13235Sralph char *NF; /* name of ditroff filter (per job) */ 2412117Sralph char *DF; /* name of tex filter (per job) */ 2512117Sralph char *GF; /* name of graph(1G) filter (per job) */ 2612117Sralph char *VF; /* name of vplot filter (per job) */ 2712117Sralph char *CF; /* name of cifplot filter (per job) */ 2812117Sralph char *PF; /* name of vrast filter (per job) */ 2912117Sralph char *FF; /* form feed string */ 3012117Sralph char *TR; /* trailer string to be output when Q empties */ 3113170Sralph short SC; /* suppress multiple copies */ 3212117Sralph short SF; /* suppress FF on each print job */ 3312117Sralph short SH; /* suppress header page */ 3412117Sralph short SB; /* short banner instead of normal header */ 3512117Sralph short RW; /* open LP for reading and writing */ 3612117Sralph short PW; /* page width */ 3712117Sralph short PL; /* page length */ 3812433Sralph short PX; /* page width in pixels */ 3912433Sralph short PY; /* page length in pixels */ 4012117Sralph short BR; /* baud rate if lp is a tty */ 4113170Sralph int FC; /* flags to clear if lp is a tty */ 4213170Sralph int FS; /* flags to set if lp is a tty */ 4313170Sralph int XC; /* flags to clear for local mode */ 4413170Sralph int XS; /* flags to set for local mode */ 4512433Sralph short RS; /* restricted to those with local accounts */ 4612117Sralph 4712117Sralph char line[BUFSIZ]; 4812117Sralph char pbuf[BUFSIZ/2]; /* buffer for printcap strings */ 4912117Sralph char *bp = pbuf; /* pointer into pbuf for pgetent() */ 5012117Sralph char *name; /* program name */ 5112117Sralph char *printer; /* printer name */ 5212117Sralph char host[32]; /* host machine name */ 5312117Sralph char *from = host; /* client's machine name */ 5412117Sralph 5512117Sralph /* 5612117Sralph * Create a connection to the remote printer server. 5712117Sralph * Most of this code comes from rcmd.c. 5812117Sralph */ 5912528Sralph getport(rhost) 6012528Sralph char *rhost; 6112117Sralph { 6212117Sralph struct hostent *hp; 6312117Sralph struct servent *sp; 6412117Sralph struct sockaddr_in sin; 6512117Sralph int s, timo = 1, lport = IPPORT_RESERVED - 1; 6612874Sralph int err; 6712117Sralph 6812117Sralph /* 6912117Sralph * Get the host address and port number to connect to. 7012117Sralph */ 7112528Sralph if (rhost == NULL) 7212117Sralph fatal("no remote host to connect to"); 7312528Sralph hp = gethostbyname(rhost); 7412117Sralph if (hp == NULL) 7512528Sralph fatal("unknown host %s", rhost); 7612117Sralph sp = getservbyname("printer", "tcp"); 7712117Sralph if (sp == NULL) 7812117Sralph fatal("printer/tcp: unknown service"); 7912117Sralph bzero((char *)&sin, sizeof(sin)); 8012117Sralph bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length); 8112117Sralph sin.sin_family = hp->h_addrtype; 8212117Sralph sin.sin_port = sp->s_port; 8312117Sralph 8412117Sralph /* 8512117Sralph * Try connecting to the server. 8612117Sralph */ 8712117Sralph retry: 8812117Sralph s = rresvport(&lport); 8912117Sralph if (s < 0) 9012117Sralph return(-1); 9112117Sralph if (connect(s, (caddr_t)&sin, sizeof(sin), 0) < 0) { 9212874Sralph err = errno; 9312874Sralph (void) close(s); 9412874Sralph errno = err; 9512117Sralph if (errno == EADDRINUSE) { 9612117Sralph lport--; 9712117Sralph goto retry; 9812117Sralph } 9912117Sralph if (errno == ECONNREFUSED && timo <= 16) { 10012117Sralph sleep(timo); 10112117Sralph timo *= 2; 10212117Sralph goto retry; 10312117Sralph } 10412117Sralph return(-1); 10512117Sralph } 10612117Sralph return(s); 10712117Sralph } 10812117Sralph 10912117Sralph rresvport(alport) 11012117Sralph int *alport; 11112117Sralph { 11212117Sralph struct sockaddr_in sin; 11312117Sralph int s; 11412117Sralph 11512117Sralph sin.sin_family = AF_INET; 11612117Sralph sin.sin_addr.s_addr = 0; 11712117Sralph s = socket(AF_INET, SOCK_STREAM, 0); 11812117Sralph if (s < 0) 11912117Sralph return(-1); 12012874Sralph for (; *alport > IPPORT_RESERVED/2; (*alport)--) { 12112117Sralph sin.sin_port = htons((u_short) *alport); 12212117Sralph if (bind(s, (caddr_t)&sin, sizeof(sin), 0) >= 0) 12312117Sralph return(s); 12412117Sralph if (errno != EADDRINUSE && errno != EADDRNOTAVAIL) 12512874Sralph break; 12612117Sralph } 12712874Sralph (void) close(s); 12812874Sralph return(-1); 12912117Sralph } 13012117Sralph 13112117Sralph /* 13212117Sralph * Getline reads a line from the control file cfp, removes tabs, converts 13312117Sralph * new-line to null and leaves it in line. 13412117Sralph * Returns 0 at EOF or the number of characters read. 13512117Sralph */ 13612117Sralph getline(cfp) 13712117Sralph FILE *cfp; 13812117Sralph { 13912117Sralph register int linel = 0; 14012117Sralph register char *lp = line; 14112117Sralph register c; 14212117Sralph 14312117Sralph while ((c = getc(cfp)) != '\n') { 14412117Sralph if (c == EOF) 14512117Sralph return(0); 14612117Sralph if (c == '\t') { 14712117Sralph do { 14812117Sralph *lp++ = ' '; 14912117Sralph linel++; 15012117Sralph } while ((linel & 07) != 0); 15112117Sralph continue; 15212117Sralph } 15312117Sralph *lp++ = c; 15412117Sralph linel++; 15512117Sralph } 15612117Sralph *lp++ = '\0'; 15712117Sralph return(linel); 15812117Sralph } 15912117Sralph 16012117Sralph /* 16112117Sralph * Scan the current directory and make a list of daemon files sorted by 16212117Sralph * creation time. 16312117Sralph * Return the number of entries and a pointer to the list. 16412117Sralph */ 16512117Sralph getq(namelist) 16612117Sralph struct queue *(*namelist[]); 16712117Sralph { 16812117Sralph register struct direct *d; 16912117Sralph register struct queue *q, **queue; 17012117Sralph register int nitems; 17112117Sralph struct stat stbuf; 17212117Sralph int arraysz, compar(); 17312117Sralph DIR *dirp; 17412117Sralph 17513170Sralph if ((dirp = opendir(SD)) == NULL) 17612117Sralph return(-1); 17712117Sralph if (fstat(dirp->dd_fd, &stbuf) < 0) 17812874Sralph goto errdone; 17912117Sralph 18012117Sralph /* 18112117Sralph * Estimate the array size by taking the size of the directory file 18212117Sralph * and dividing it by a multiple of the minimum size entry. 18312117Sralph */ 18412117Sralph arraysz = (stbuf.st_size / 24); 18512117Sralph queue = (struct queue **)malloc(arraysz * sizeof(struct queue *)); 18612117Sralph if (queue == NULL) 18712874Sralph goto errdone; 18812117Sralph 18912117Sralph nitems = 0; 19012117Sralph while ((d = readdir(dirp)) != NULL) { 19112117Sralph if (d->d_name[0] != 'c' || d->d_name[1] != 'f') 19212117Sralph continue; /* daemon control files only */ 19312117Sralph if (stat(d->d_name, &stbuf) < 0) 19412117Sralph continue; /* Doesn't exist */ 19512117Sralph q = (struct queue *)malloc(sizeof(time_t)+strlen(d->d_name)+1); 19612117Sralph if (q == NULL) 19712874Sralph goto errdone; 19812117Sralph q->q_time = stbuf.st_mtime; 19912117Sralph strcpy(q->q_name, d->d_name); 20012117Sralph /* 20112117Sralph * Check to make sure the array has space left and 20212117Sralph * realloc the maximum size. 20312117Sralph */ 20412117Sralph if (++nitems > arraysz) { 20512117Sralph queue = (struct queue **)realloc((char *)queue, 20612117Sralph (stbuf.st_size/12) * sizeof(struct queue *)); 20712117Sralph if (queue == NULL) 20812874Sralph goto errdone; 20912117Sralph } 21012117Sralph queue[nitems-1] = q; 21112117Sralph } 21212117Sralph closedir(dirp); 21312117Sralph if (nitems) 21412117Sralph qsort(queue, nitems, sizeof(struct queue *), compar); 21512117Sralph *namelist = queue; 21612117Sralph return(nitems); 21712874Sralph 21812874Sralph errdone: 21912874Sralph closedir(dirp); 22012874Sralph return(-1); 22112117Sralph } 22212117Sralph 22312117Sralph /* 22412117Sralph * Compare modification times. 22512117Sralph */ 22612117Sralph static 22712117Sralph compar(p1, p2) 22812117Sralph register struct queue **p1, **p2; 22912117Sralph { 23012117Sralph if ((*p1)->q_time < (*p2)->q_time) 23112117Sralph return(-1); 23212117Sralph if ((*p1)->q_time > (*p2)->q_time) 23312117Sralph return(1); 23412117Sralph return(0); 23512117Sralph } 23612117Sralph 23712117Sralph /*VARARGS1*/ 23812117Sralph fatal(msg, a1, a2, a3) 23912117Sralph char *msg; 24012117Sralph { 24112117Sralph if (from != host) 24212117Sralph printf("%s: ", host); 24312117Sralph printf("%s: ", name); 24412117Sralph if (printer) 24512117Sralph printf("%s: ", printer); 24612117Sralph printf(msg, a1, a2, a3); 24712117Sralph putchar('\n'); 24812117Sralph exit(1); 24912117Sralph } 250