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Annotation of 43BSD/usr.bin/uucp/gnsys.c, revision 1.1.1.1

1.1       root        1: #ifndef lint
                      2: static char sccsid[] = "@(#)gnsys.c    5.4 (Berkeley) 6/20/85";
                      3: #endif
                      4: 
                      5: #include "uucp.h"
                      6: #ifdef NDIR
                      7: #include "ndir.h"
                      8: #else
                      9: #include <sys/dir.h>
                     10: #endif
                     11: 
                     12: #define LSIZE 128      /* number of systems to store */
                     13: #define WSUFSIZE 6     /* work file name suffix size */
                     14: 
                     15: /*LINTLIBRARY*/
                     16: 
                     17: /*
                     18:  *     this routine will return the next system name which has work to be done.
                     19:  *     "sname" is a string of size DIRSIZ - WSUFSIZE.
                     20:  *     "pre" is the prefix for work files.
                     21:  *     "dir" is the directory to search.
                     22:  *
                     23:  *     return codes:
                     24:  *             1  -  name returned in sname
                     25:  *             SUCCESS  -  no more names
                     26:  *             FAIL  -  bad directory
                     27:  */
                     28: 
                     29: gnsys(sname, dir, pre)
                     30: char *sname, *dir, pre;
                     31: {
                     32:        register char *s, *p1, *p2;
                     33:        char px[3];
                     34:        static char *list[LSIZE];
                     35:        static int nitem=0, n=0, base=0;
                     36:        char systname[NAMESIZE], filename[NAMESIZE];
                     37:        DIR *dirp;
                     38: 
                     39: retry:
                     40:        px[0] = pre;
                     41:        px[1] = '.';
                     42:        px[2] = '\0';
                     43:        if (nitem == base) {
                     44:                /* get list of systems with work */
                     45:                int i;
                     46:                dirp = opendir(subdir(dir,pre));
                     47:                ASSERT(dirp != NULL, "BAD DIRECTORY", dir, 0);
                     48:                for (i = base; i < LSIZE; i++)
                     49:                        list[i] = NULL;
                     50:                while (gnamef(dirp, filename) != 0) {
                     51:                        if (!prefix(px, filename))
                     52:                                continue;
                     53:                        p2 = filename + strlen(filename)
                     54:                                - WSUFSIZE;
                     55:                        p1 = filename + strlen(px);
                     56:                        for(s = systname; p1 <= p2; p1++)
                     57:                                *s++ = *p1;
                     58:                        *s = '\0';
                     59:                        if (systname[0] == '\0')
                     60:                                continue;
                     61:                        nitem = srchst(systname, list, nitem);
                     62:                        if (LSIZE <= nitem) break;
                     63:                }
                     64: 
                     65:                closedir(dirp);
                     66:        }
                     67: 
                     68:        if (nitem == base) {
                     69:                for (n = 0; n < nitem; n++)
                     70:                        if (list[n] != NULL)
                     71:                                free(list[n]);
                     72:                return SUCCESS;
                     73:        }
                     74:        while(nitem > n) {
                     75:                /* We only have at most a SYSNSIZE character site name encoded
                     76:                 * in the file. However, we would like to use the full sitename
                     77:                 * if possible. If the number of chars in list[n] is < SYSNSIZE
                     78:                 * then the sitename could not have been truncated and
                     79:                 * we don't bother to check. Otherwise, we scan SYSFILE
                     80:                 * looking for the fullname and return it if we find it
                     81:                 */
                     82:                strcpy(sname, list[n++]);
                     83:                if (strlen(sname) >= SYSNSIZE) {
                     84:                        register FILE *fp;
                     85:                        register char *p;
                     86:                        char line[MAXFULLNAME];
                     87:                        fp = fopen(SYSFILE, "r");
                     88:                        ASSERT(fp != NULL, CANTOPEN, SYSFILE, 0);
                     89:                        while (cfgets(line, sizeof(line), fp) != NULL) {
                     90:                                p = index(line, ' ');
                     91:                                if (p)
                     92:                                        *p = '\0';
                     93:                                if (strncmp(sname, line, SYSNSIZE) == SAME) {
                     94:                                        strncpy(sname, line, MAXBASENAME);
                     95:                                        break;
                     96:                                }
                     97:                        }
                     98:                        fclose(fp);
                     99:                }
                    100:                if (callok(sname) == 0)
                    101:                        return 1;
                    102:        }
                    103:        base = n = nitem;
                    104:        goto retry;
                    105: }
                    106: 
                    107: /*
                    108:  *     this routine will do a linear search of list (list) to find name (name).
                    109:  *     If the name is not found, it is added to the list.
                    110:  *     The number of items in the list (n) is returned (incremented if a
                    111:  *     name is added).
                    112:  *
                    113:  *     return codes:
                    114:  *             n - the number of items in the list
                    115:  */
                    116: 
                    117: srchst(name, list, n)
                    118: char *name;
                    119: register char **list;
                    120: int n;
                    121: {
                    122:        register int i;
                    123:        register char *p;
                    124: 
                    125:        for (i = 0; i < n; i++)
                    126:                if (strcmp(name, list[i]) == 0)
                    127:                        break;
                    128:        if (i >= n) {
                    129:                if ((p = calloc((unsigned)strlen(name) + 1, sizeof (char)))
                    130:                        == NULL)
                    131:                        return n;
                    132:                strcpy(p, name);
                    133:                list[n++] = p;
                    134:        }
                    135:        return n;
                    136: }

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