| 1 | /* process.c
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| 2 | *
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| 3 | * This file is part of httpd.
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| 4 | *
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| 5 | * 02/17/1996 Michael Temari <Michael@TemWare.Com>
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| 6 | * 07/07/1996 Initial Relase Michael Temari <Michael@TemWare.Com>
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| 7 | * 12/29/2002 Michael Temari <Michael@TemWare.Com>
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| 8 | *
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| 9 | */
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| 10 | #include <sys/types.h>
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| 11 | #include <sys/stat.h>
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| 12 | #include <ctype.h>
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| 13 | #include <stdio.h>
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| 14 | #include <string.h>
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| 15 | #include <stdlib.h>
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| 16 | #include <time.h>
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| 17 | #include <fcntl.h>
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| 18 | #include <unistd.h>
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| 19 | #include <errno.h>
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| 20 |
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| 21 | #include "config.h"
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| 22 | #include "http.h"
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| 23 | #include "utility.h"
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| 24 |
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| 25 | int processrequest(rq, rp)
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| 26 | struct http_request *rq;
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| 27 | struct http_reply *rp;
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| 28 | {
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| 29 | /* clear out http_reply */
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| 30 | memset(rp, 0, sizeof(*rp));
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| 31 | rp->status = HTTP_STATUS_OK;
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| 32 | strcpy(rp->statusmsg, "OK");
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| 33 | rp->modtime = (time_t) -1;
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| 34 | rp->urlaccess = -1;
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| 35 | rp->size = 0;
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| 36 | rp->fd = -1;
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| 37 | rp->ofd = -1;
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| 38 | rp->pid = 0;
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| 39 |
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| 40 | /* Simple requests can only be a GET */
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| 41 | if(rq->type == HTTP_REQUEST_TYPE_SIMPLE && rq->method != HTTP_METHOD_GET) {
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| 42 | rp->status = HTTP_STATUS_BAD_REQUEST;
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| 43 | strcpy(rp->statusmsg, "Bad request");
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| 44 | return(0);
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| 45 | }
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| 46 |
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| 47 | /* I don't know this method */
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| 48 | if(rq->method == HTTP_METHOD_UNKNOWN) {
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| 49 | rp->status = HTTP_STATUS_NOT_IMPLEMENTED;
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| 50 | strcpy(rp->statusmsg, "Method not implemented");
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| 51 | return(0);
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| 52 | }
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| 53 |
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| 54 | /* Check for access and real location of url */
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| 55 | if(police(rq, rp))
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| 56 | return(-1);
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| 57 |
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| 58 | /* We're done if there was an error accessing the url */
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| 59 | if(rp->status != HTTP_STATUS_OK)
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| 60 | return(0);
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| 61 |
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| 62 | /* Check to see if we have a newer version for them */
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| 63 | if(rq->method == HTTP_METHOD_GET)
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| 64 | if(rq->ifmodsince != (time_t) -1)
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| 65 | if(rq->ifmodsince < time((time_t *)NULL))
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| 66 | if(rp->modtime != (time_t) -1 && rp->modtime <= rq->ifmodsince) {
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| 67 | rp->status = HTTP_STATUS_NOT_MODIFIED;
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| 68 | strcpy(rp->statusmsg, "Not modified");
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| 69 | close(rp->fd);
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| 70 | rp->fd = -1;
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| 71 | return(0);
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| 72 | }
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| 73 |
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| 74 | rp->status = HTTP_STATUS_OK;
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| 75 | strcpy(rp->statusmsg, "OK");
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| 76 |
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| 77 | if(rp->size != 0)
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| 78 | rp->keepopen = rq->keepopen;
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| 79 |
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| 80 | return(0);
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| 81 | }
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