/* * Routines to manipulate the dialing directory file pcomm.dial_dir */#include <stdio.h>#include "dial_dir.h"#include "param.h"/* * Read the dialing directory.  Returns a pointer to a static area * containing the DIAL_DIR structure.  All of the entries are created * regardless of the number of physical entries in the file.  Element * number zero is reserved for the "manual" entry.  All errors are fatal. */struct DIAL_DIR *read_dir(){	extern char *null_ptr;	FILE *fp, *uid_fopen();	int i, line, oops;	char *str_dup(), buf[200], *temp_token, *str, *str_tok(), token[20];	char message[80], *sep, *findfile();	static struct DIAL_DIR d;	void error_win();	if ((d.d_path = findfile("pcomm.dial_dir")) == NULL)		error_win(1, "Support file \"pcomm.dial_dir\" is missing", "or no read permission");	if (!(fp = uid_fopen(d.d_path, "r"))) {		sprintf(buf, "\"%s\" for read", d.d_path);		error_win(1, "Can't open dialing directory file", buf);	}	sep = ";;---;;\n";	line = 0;	oops = 0;	while (fgets(buf, 200, fp) != NULL) {		line++;		if (line > NUM_DIR)			break;					/* get the token */		if (!(temp_token = str_tok(buf, '='))) {			sprintf(message, "is missing a token at line %d", line);			oops++;			break;		}		/*		 * Parse the rest of the line.  This is similar to using		 * the "real" strtok() function, but this version returns		 * a pointer to NULL if the token is missing.  Note the use		 * of the array of field separators.		 */		for (i=0; i<8; i++) {			if (!(str = str_tok((char *) NULL, sep[i]))) {				sprintf(message, "is missing a parameter at line %d", line);				oops++;				break;			}			switch (i) {				case 0:					d.name[line] = str_dup(str);					break;				case 1:					d.number[line] = str_dup(str);					break;				case 2:					d.baud[line] = (unsigned int) atoi(str);					break;				case 3:					d.parity[line] = *str;					break;				case 4:					d.data_bits[line] = atoi(str);					break;				case 5:					d.stop_bits[line] = atoi(str);					break;				case 6:					d.duplex[line] = *str;					break;				case 7:					d.aux[line] = str_dup(str);					break;			}		}		if (oops)			break;					/* sanity checking */		sprintf(token, "DIR_%d", line);		if (strcmp(temp_token, token)) {			sprintf(message, "is corrupted at line %d", line);			oops++;			break;		}	}	fclose(fp);	if (oops) {		sprintf(buf, "Dialing directory file \"%s\"", d.d_path);		error_win(1, buf, message);	}	d.d_entries = line;					/* if empty database */	if (!line) {		sprintf(buf, "Dialing directory file \"%s\"", d.d_path);		error_win(0, buf, "has no data");	}					/* fill in the rest with defaults */	for (i=line+1; i<=NUM_DIR; i++) {		d.name[i] = null_ptr;		d.number[i] = null_ptr;		d.baud[i] = param->d_baud;		d.parity[i] = param->d_parity;		d.data_bits[i] = param->d_data_bits;		d.stop_bits[i] = param->d_stop_bits;		d.duplex[i] = *param->d_duplex;		d.aux[i] = null_ptr;	}					/* create an empty "manual" entry */	d.name[0] = null_ptr;	d.number[0] = null_ptr;	d.baud[0] = param->d_baud;	d.parity[0] = param->d_parity;	d.data_bits[0] = param->d_data_bits;	d.stop_bits[0] = param->d_stop_bits;	d.duplex[0] = *param->d_duplex;	d.aux[0] = null_ptr;					/* create an empty queue */	for (i=0; i<NUM_QUEUE; i++) {		d.q_ld[i] = '\0';		d.q_num[i] = -1;	}					/* the start up d_cur is 0 */	d.d_cur = 0;	return(&d);}/* * Update a dialing directory entry.  Update only the one entry asked for, * not the entire image in memory.  If the new entry is beyond the end of * the physical file, then fill in the holes, and update "dir->d_entries". * A non-zero return code means a non-fatal error. */intup_dir(entry)int entry;{	FILE *fp_in, *fp_out, *uid_fopen();	int i;	char *temp[NUM_DIR+1], buf[200], *str_dup(), *str_rep();	void error_win(), free_ptr();					/* open for read */	if (!(fp_in = uid_fopen(dir->d_path, "r"))) {		sprintf(buf, "\"%s\" for read", dir->d_path);		error_win(1, "Can't open dialing directory file", buf);	}					/* read in a temporary version */	i = 0;	while (fgets(buf, 200, fp_in) != NULL)		temp[++i] = str_dup(buf);	fclose(fp_in);					/* alter only 1 entry */	sprintf(buf, "DIR_%d=%s;%s;%d-%c-%d-%d;%c;%s\n", entry,	 dir->name[entry], dir->number[entry], dir->baud[entry],	 dir->parity[entry], dir->data_bits[entry], dir->stop_bits[entry],	 dir->duplex[entry], dir->aux[entry]);	if (entry <= dir->d_entries)		temp[entry] = str_rep(temp[entry], buf);	else		temp[entry] = str_dup(buf);					/* fill in holes if beyond end */	if (entry > dir->d_entries+1) {		for (i=dir->d_entries+1; i<entry; i++) {			sprintf(buf, "DIR_%d=;;%d-%c-%d-%d;%c;\n", i,			 param->d_baud, param->d_parity, param->d_data_bits,			 param->d_stop_bits, *param->d_duplex);			temp[i] = str_dup(buf);		}	}					/* update "dir->d_entries" */	if (entry > dir->d_entries)		dir->d_entries = entry;					/* open for write */	if (!(fp_out = uid_fopen(dir->d_path, "w"))) {		for (i=1; i<=dir->d_entries; i++)			free_ptr(temp[i]);		sprintf(buf, "\"%s\"", dir->d_path);		error_win(0, "No write permission on dialing directory file", buf);		return(1);	}					/* put it back */	for (i=1; i<=dir->d_entries; i++) {		fputs(temp[i], fp_out);		free_ptr(temp[i]);	}	fclose(fp_out);	return(0);}/* * Delete a range of dialing directory entries.  Actually, just copies * default (empty) entries in place of deleted entries.  However, it will * shrink the file if deletions occur at the physical EOF.  A non-zero * return code means a non-fatal error. */intdel_dir(first, last)int first, last;{	FILE *fp_in, *fp_out, *uid_fopen();	int i;	char *temp[NUM_DIR+1], buf[200], *str_dup(), *str_rep();	void error_win(), free_ptr();					/* sanity checking */	if (first > dir->d_entries)		return(0);	if (last > dir->d_entries)		last = dir->d_entries;					/* open for read */	if (!(fp_in = uid_fopen(dir->d_path, "r"))) {		sprintf(buf, "\"%s\" for read", dir->d_path);		error_win(1, "Can't open dialing directory file", buf);	}					/* read in a temporary version */	i = 0;	while (fgets(buf, 200, fp_in) != NULL)		temp[++i] = str_dup(buf);	fclose(fp_in);					/* delete the range of values */	for (i=first; i<=last; i++) {		sprintf(buf, "DIR_%d=;;%d-%c-%d-%d;%c;\n", i, param->d_baud,		 param->d_parity, param->d_data_bits, param->d_stop_bits,		 *param->d_duplex);		temp[i] = str_rep(temp[i], buf);	}					/* shrink the file? */	if (last >= dir->d_entries) {		for (i=first; i<=last; i++)			free_ptr(temp[i]);		dir->d_entries = first-1;	}					/* open for write */	if (!(fp_out = uid_fopen(dir->d_path, "w"))) {		for (i=1; i<=dir->d_entries; i++)			free_ptr(temp[i]);		sprintf(buf, "\"%s\"", dir->d_path);		error_win(0, "No write permission on dialing directory file", buf);		return(1);	}					/* put it all back */	for (i=1; i<=dir->d_entries; i++) {		fputs(temp[i], fp_out);		free_ptr(temp[i]);	}	fclose(fp_out);	return(0);}