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Annotation of researchv10no/cmd/ap/apkeys/fuser.c, revision 1.1

1.1     ! root        1: # include "stdio.h"
        !             2: # include "ctype.h"
        !             3: # include "assert.h"
        !             4: main(argc,argv)
        !             5:        char *argv[];
        !             6: {
        !             7: /*
        !             8:  * looks through password for people with file argv[1]
        !             9:  * prints lines with full file name, userid, home directory
        !            10:  */
        !            11: FILE *f;
        !            12: char pline[250], fname[100];
        !            13: char *p, *s, *strchr();
        !            14: assert(argc>1);
        !            15: f = fopen("/etc/passwd", "r");
        !            16: assert(f!=NULL);
        !            17: while (fgets(pline, 250, f))
        !            18:        {
        !            19:        p = strchr(pline, ':');
        !            20:        assert(p!=0);
        !            21:        *p= 0; /* end of userid */
        !            22:        p = strchr(p+1, ':'); assert(p!=0); /* end of password */
        !            23:        p = strchr(p+1, ':'); assert(p!=0); /* end of user number */
        !            24:        p = strchr(p+1, ':'); assert(p!=0); /* end of group number */
        !            25:        p = strchr(p+1, ':'); assert(p!=0); /* end of gcos account */
        !            26:        p = strchr(s=p+1, ':'); assert(p!=0); /* end of home directory */
        !            27:        *p=0;
        !            28:        sprintf(fname, "%s/%s", s, argv[1]);
        !            29:        if (access(fname, 04)==0)
        !            30:                printf("%s %s %s\n", fname, pline, s);
        !            31:        }
        !            32: fclose(f);
        !            33: }

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