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Annotation of coherent/b/bin/mail/util.c, revision 1.1

1.1     ! root        1: #include <stdio.h>
        !             2: #include <sys/stat.h>
        !             3: #include <access.h>
        !             4: #include "mail.h"
        !             5: #include <time.h>
        !             6: #include <sys/types.h>
        !             7: 
        !             8: char   *parent();
        !             9: char   keyname[64];            /* Destination public key file name */
        !            10: 
        !            11: /*
        !            12:  *     Miscellaneous Routines
        !            13:  */
        !            14: 
        !            15: char *
        !            16: myalloc(size)
        !            17: unsigned int size;
        !            18: {
        !            19:        register char *cp;
        !            20:        extern char *malloc();
        !            21: 
        !            22:        if ( (cp=malloc(size)) == NULL )
        !            23:                merr("Out of memory");
        !            24:        return(cp);
        !            25: }
        !            26: 
        !            27: fatal(x)
        !            28: {
        !            29:        fprintf(stderr, "Fatal Error: %r\n", &x);
        !            30:        fflush(stderr);
        !            31:        rmexit(1);
        !            32: }
        !            33: 
        !            34: /*
        !            35:  * Check access on a file.
        !            36:  */
        !            37: maccess(name)
        !            38: char *name;
        !            39: {
        !            40:        struct stat sb;
        !            41: 
        !            42:        if (stat(name, &sb) < 0) {
        !            43:                if (access(parent(name), ACREAT) < 0)
        !            44:                        return (-1);
        !            45:        } else if (access(name, AWRITE) < 0)
        !            46:                return (-1);
        !            47:        return (0);
        !            48: }
        !            49: 
        !            50: /*
        !            51:  * Check enrollment for xmail.
        !            52:  */
        !            53: xaccess(name) char *name;
        !            54: {
        !            55:        struct stat sb;
        !            56:        sprintf(keyname, "%s%s", PUBKEYDIR, name);
        !            57:        return stat(keyname, &sb) >= 0;
        !            58: }
        !            59: /*
        !            60:  * Find the parent directory for access permissions.
        !            61:  */
        !            62: char *
        !            63: parent(name)
        !            64: char *name;
        !            65: {
        !            66:        register char *cp, *xp;
        !            67:        static char p[256];
        !            68: 
        !            69:        xp = rindex(name, '/');
        !            70:        if (xp == NULL)
        !            71:                return (".");
        !            72:        if (xp == name)
        !            73:                return ("/");
        !            74:        if (xp - name >= 256)
        !            75:                return ("");
        !            76:        cp = p;
        !            77:        while (name < xp)
        !            78:                *cp++ = *name++;
        !            79:        *cp = 0;
        !            80:        return (p);
        !            81: }
        !            82: 
        !            83: /*
        !            84:  * Copy from the file stream `ifp' (starting at
        !            85:  * position `start' and ending at `end' or EOF)
        !            86:  * to the file stream `ofp' which is assumed
        !            87:  * to be already correctly positioned.
        !            88:  * Returns non-zero on errors.
        !            89:  * intstop == 1 means stop on interrupt
        !            90:  * intstop == 0 means ignore interrupt
        !            91:  */
        !            92: mcopy(ifp, ofp, start, end, intstop)
        !            93: register FILE *ifp, *ofp;
        !            94: fsize_t start, end;
        !            95: {
        !            96:        register int c;
        !            97: 
        !            98:        fseek(ifp, start, 0);
        !            99:        end -= start;
        !           100:        if (intstop)
        !           101:                while (!intcheck() && end-- > 0  &&  (c = getc(ifp))!=EOF)
        !           102:                        putc(c, ofp);
        !           103:        else
        !           104:                while (end-- > 0  &&  (c = getc(ifp))!=EOF)
        !           105:                        putc(c, ofp);
        !           106:        fflush(ofp);
        !           107:        if (ferror(ofp))
        !           108:                return (1);
        !           109:        return (0);
        !           110: }
        !           111: 
        !           112: #if XMAIL
        !           113: 
        !           114: char helpmessage[] = "\
        !           115: \
        !           116: mail -- computer mail\n\
        !           117: xmail -- secret computer mail\n\
        !           118: Usage: mail [ options ] [ user ... ]\n\
        !           119: or:    xmail [ options ] user [ ... ]\n\
        !           120: Options:\n\
        !           121:        -f file         Print mail from 'file' instead of the default\n\
        !           122:        -p              Print mail non-interactively\n\
        !           123:        -q              Exit on interrupt, leaving mail unchanged\n\
        !           124:        -r              Print mail in reverse order, latest first\n\
        !           125:        -v              Verbose commentary on alias expansion\n\
        !           126: If 'user' is present, send each a mail message read from standard input.\n\
        !           127: If 'xmail' is the command, use xencode to encrypt the mail messages.\n\
        !           128: Mail message ends with EOF of a line containing only '.'.  Otherwise, read\n\
        !           129: and print the invoking user's mailbox.\n\
        !           130: \
        !           131: ";
        !           132: 
        !           133: #else
        !           134: 
        !           135: char helpmessage[] = "\
        !           136: \
        !           137: mail -- computer mail\n\
        !           138: Usage: mail [ options ] [ user ... ]\n\
        !           139: Options:\n\
        !           140:        -f file         Print mail from 'file' instead of the default\n\
        !           141:        -p              Print mail non-interactively\n\
        !           142:        -q              Exit on interrupt, leaving mail unchanged\n\
        !           143:        -r              Print mail in reverse order, latest first\n\
        !           144:        -v              Verbose commentary on alias expansion\n\
        !           145: If 'user' is present, send each a mail message read from standard input.\n\
        !           146: Mail message ends with EOF of a line containing only '.'.  Otherwise, read\n\
        !           147: and print the invoking user's mailbox.\n\
        !           148: \
        !           149: ";
        !           150: #endif
        !           151: 
        !           152: usage()
        !           153: {
        !           154:        mmsg(helpmessage);
        !           155:        rmexit(1);
        !           156: }
        !           157: 
        !           158: #if 0
        !           159: 
        !           160: #define        LOGFILE "/usr/spool/uucppublic/mail/debug.log"
        !           161: 
        !           162: static char *logfile = LOGFILE;
        !           163: static FILE *logfp = NULL;
        !           164: 
        !           165: logopen()
        !           166: {
        !           167:        time_t t;
        !           168: 
        !           169:        time(&t);
        !           170:        if ( (logfp=fopen(logfile, "a")) == NULL )
        !           171:                fatal("Can't open Log File: \"%s\"", logfile);
        !           172:        logdump("------------------\n");
        !           173:        logdump(ctime(&t));
        !           174: }
        !           175: 
        !           176: logclose()
        !           177: {
        !           178:        if ( logfp != NULL )  
        !           179:                fclose(logfp);
        !           180: }
        !           181: 
        !           182: logdump(x)
        !           183: {
        !           184:        if ( logfp != NULL )
        !           185:                fprintf(logfp, "%r", &x);
        !           186: }
        !           187: 
        !           188: #else
        !           189: 
        !           190: logopen()
        !           191: {}
        !           192: 
        !           193: logclose()
        !           194: {}
        !           195: 
        !           196: logdump()
        !           197: {}
        !           198: 
        !           199: #endif
        !           200: /*
        !           201:  *     This function takes the two argv-style lists of mail targets,
        !           202:  *     the "To:"-list and the "CC:"-list, and returns a total
        !           203:  *     combined list of all target to whom the mail message will be sent.
        !           204:  */
        !           205: 
        !           206: char **
        !           207: listcat(tolist, cclist)
        !           208: char **tolist, **cclist;
        !           209: {
        !           210: 
        !           211:        static char     *recips[MAXRECIP];
        !           212:        int     numrecip = 0;
        !           213:        register char **listpp;
        !           214: 
        !           215:        for (listpp=tolist; *listpp != NULL; listpp++) {
        !           216:                recips[numrecip++] = *listpp;
        !           217:        }
        !           218:        for (listpp=cclist; *listpp != NULL; listpp++) {
        !           219:                recips[numrecip++] = *listpp;
        !           220:        }
        !           221:        recips[numrecip] = NULL;
        !           222: 
        !           223:        return(recips);
        !           224: }
        !           225: 
        !           226: /*
        !           227:  * tmp_copy()
        !           228:  * Make a temporary copy of a file stream.
        !           229:  * The file pointer returned points to an unlinked copy of the
        !           230:  * stream from the argument.  This way, the file need only be
        !           231:  * closed to remove it.
        !           232:  */
        !           233: 
        !           234: FILE *
        !           235: tmp_copy(fp)
        !           236:        FILE *fp;
        !           237: {
        !           238:        FILE *new_fp;
        !           239:        char *filename;
        !           240: 
        !           241:        if((filename = tempnam(NULL, "mail")) == (FILE *)NULL) {
        !           242:                merr("Can't create temporary file name.");
        !           243:        }
        !           244: 
        !           245:        /* We are going to want to read from new_fp later.  */
        !           246:        if((new_fp = fopen(filename, "w+")) == NULL) {
        !           247:                /* filename does not get free()'d on this error.  */
        !           248:                merr("Can't open temporary file %s.", filename);
        !           249:        }
        !           250:        unlink(filename);
        !           251: 
        !           252:        /* Copy all of fp to new_fp. */
        !           253:        mcopy(fp, new_fp, (fsize_t)0, (fsize_t)MAXLONG, 0);
        !           254: 
        !           255:        free(filename);
        !           256:        return(new_fp);
        !           257: }

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